Notice2026-09344

Self-Regulatory Organizations; Miami International Securities Exchange, LLC; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend the Fee Schedule To Establish Fees for Industry Members Related To Reasonably Budgeted CAT Costs of the National Market System Plan Governing the Consolidated Audit Trail for the Period From May 1, 2026 Through December 31, 2026

Primary source

Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.

Published
May 12, 2026

Issuing agencies

Securities and Exchange Commission

Full Text

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<title>Federal Register, Volume 91 Issue 91 (Tuesday, May 12, 2026)</title>
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[Federal Register Volume 91, Number 91 (Tuesday, May 12, 2026)]
[Notices]
[Pages 26077-26100]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-09344]


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SECURITIES AND EXCHANGE COMMISSION

[Release No. 34-105391; File No. SR-MIAX-2026-17]


Self-Regulatory Organizations; Miami International Securities 
Exchange, LLC; Notice of Filing and Immediate Effectiveness of a 
Proposed Rule Change to Amend the Fee Schedule To Establish Fees for 
Industry Members Related To Reasonably Budgeted CAT Costs of the 
National Market System Plan Governing the Consolidated Audit Trail for 
the Period From May 1, 2026 Through December 31, 2026

May 7, 2026.
    Pursuant to Section 19(b)(1) of the Securities Exchange Act of 1934 
(``Act''),\1\ and Rule 19b-4 thereunder,\2\ notice is hereby given that 
on April 23, 2026, Miami International Securities Exchange, LLC 
(``MIAX'' or ``Exchange'') filed with the Securities and Exchange 
Commission (``Commission'') a proposed rule change as described in 
Items I, II, and III below, which Items have been prepared by the 
Exchange. The Commission is publishing this notice to solicit comments 
on the proposed rule change from interested persons.
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    \1\ 15 U.S.C. 78s(b)(1).
    \2\ 17 CFR 240.19b-4.
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I. Self-Regulatory Organization's Statement of the Terms of Substance 
of the Proposed Rule Change

    The Exchange is filing a proposal to amend the MIAX Options 
Exchange Fee Schedule (the ``Fee Schedule'') to establish fees for 
Industry Members \3\ related to reasonably budgeted CAT costs of the 
National Market System Plan Governing the Consolidated Audit Trail (the 
``CAT NMS Plan'' or ``Plan'') for the period from May 1, 2026 through 
December 31, 2026. These fees would be payable to Consolidated Audit 
Trail, LLC (``CAT LLC'' or the ``Company'') and referred to as CAT Fee 
2026-1, and would be described in a section of the Exchange's fee 
schedule entitled ``Consolidated Audit Trail Funding Fees.'' The fee 
rate for CAT Fee 2026-1 would be $0.000001 per executed equivalent 
share. CAT Executing Brokers will receive their first monthly invoice 
for CAT Fee 2026-1 in June 2026 calculated based on their transactions 
as CAT Executing Brokers for the Buyer (``CEBB'') and/or CAT Executing 
Brokers for the Seller (``CEBS'') in May 2026. As described further 
below, CAT Fee 2026-1 is anticipated to be in place for eight months, 
and is anticipated to recover approximately two-thirds of the costs set 
forth in the reasonably budgeted CAT costs for 2026.
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    \3\ An ``Industry Member'' is defined as ``a member of a 
national securities exchange or a member of a national securities 
association.'' See Exchange Rule 1701(u). See also Section 1.1 of 
the CAT NMS Plan. Unless otherwise specified, capitalized terms used 
in this rule filing are defined as set forth in the CAT NMS Plan 
and/or the CAT Compliance Rule. See Exchange Rule 1701.
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    The text of the proposed rule change is available on the Exchange's 
website at <a href="https://www.miaxglobal.com/markets/us-options/all-options-exchanges/rule-filings">https://www.miaxglobal.com/markets/us-options/all-options-exchanges/rule-filings</a> and at MIAX's principal office.

II. Self-Regulatory Organization's Statement of the Purpose of, and 
Statutory Basis for, the Proposed Rule Change

    In its filing with the Commission, the Exchange included statements 
concerning the purpose of and basis for the proposed rule change and 
discussed any comments it received on the proposed rule change. The 
text of these statements may be examined at the places specified in 
Item IV below. The Exchange has prepared summaries, set forth in 
sections A, B, and C below, of the most significant aspects of such 
statements.

A. Self-Regulatory Organization's Statement of the Purpose of, and 
Statutory Basis for, the Proposed Rule Change

1. Purpose
    On July 11, 2012, the Commission adopted Rule 613 of Regulation 
NMS, which required the self-regulatory organizations (``SROs'') to 
submit a national market system (``NMS'') plan to create, implement and 
maintain a consolidated audit trail that would capture customer and 
order event information for orders in NMS securities across all 
markets, from the time of order inception through routing, 
cancellation, modification or execution.\4\ On November 15, 2016, the 
Commission approved the CAT NMS Plan.\5\ Under the CAT NMS Plan, the 
Operating Committee has the discretion to establish funding for CAT LLC 
to operate the CAT, including establishing fees for Industry Members to 
be assessed by CAT LLC that would be implemented on behalf of CAT LLC 
by the Participants.\6\ The Operating Committee adopted a revised 
funding model to fund the CAT (``CAT Funding Model''). On March 16, 
2026, the Commission approved the CAT Funding Model after concluding 
that the model satisfied the requirements of Section 11A of the 
Exchange Act and Rule 608 thereunder.\7\
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    \4\ Securities Exchange Act Rel. No. 67457 (July 18, 2012), 77 
FR 45722 (Aug. 1, 2012).
    \5\ Securities Exchange Act Rel. No. 79318 (Nov. 15, 2016), 81 
FR 84696 (Nov. 23, 2016) (``CAT NMS Plan Approval Order'').
    \6\ Section 11.1(b) of the CAT NMS Plan.
    \7\ Securities Exchange Act Rel. No. 105003 (Mar. 16, 2026), 91 
FR 13410 (Mar. 19, 2026) (``CAT Funding Model Approval Order''). 
This CAT Funding Model replaced the prior funding model that was 
approved by the Commission on September 6, 2023. Securities Exchange 
Act Rel. No. 98290 (Sept. 6, 2023), 88 FR 62628 (Sept. 12, 2023).
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    The CAT Funding Model provides a framework for the recovery of the 
costs to create, develop and maintain the CAT, including providing a 
method for allocating costs to fund the CAT among Participants and 
Industry Members. The CAT Funding Model establishes two categories of 
fees: (1) CAT fees assessed by CAT LLC and payable by certain Industry 
Members to recover a portion of historical CAT costs previously paid by 
the Participants (``Historical CAT Assessment'' fees); and (2) CAT fees 
assessed by CAT LLC and payable by Participants and Industry Members to

[[Page 26078]]

fund prospective CAT costs (``CAT Fees'').\8\
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    \8\ Under the CAT Funding Model, the Operating Committee may 
establish CAT Fees related to CAT costs going forward. Section 
11.3(a) of the CAT NMS Plan. This filing only establishes CAT Fee 
2026-1 related to reasonably budgeted CAT costs for the period from 
May 1, 2026 through December 31, 2026 as described herein; it does 
not address any other potential CAT Fees related to CAT costs. Any 
such other CAT Fee will be subject to a separate fee filing. In 
addition, under the CAT Funding Model, the Operating Committee may 
establish one or more Historical CAT Assessments. Section 11.3(b) of 
the CAT NMS Plan. This filing does not address any Historical CAT 
Assessments.
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    Under the CAT Funding Model, Participants, CEBBs and CEBSs are 
subject to fees designed to cover the ongoing budgeted costs of the 
CAT, as determined by the Operating Committee. ``The Operating 
Committee will establish fees (`CAT Fees') to be payable by 
Participants and Industry Members with regard to CAT costs not 
previously paid by the Participants (`Prospective CAT Costs').'' \9\ In 
establishing a CAT Fee, the Operating Committee will calculate a ``Fee 
Rate'' for the relevant period. Then, for each month in which a CAT Fee 
is in effect, each CEBB and CEBS would be required to pay the fee for 
each transaction in Eligible Securities executed by the CEBB or CEBS 
from the prior month as set forth in CAT Data, where the fee for each 
transaction will be calculated by multiplying the number of executed 
equivalent shares in the transaction by one-third and by the Fee Rate.
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    \9\ Section 11.3(a) of the CAT NMS Plan.
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    The CAT Fees to be paid by CEBBs and CEBSs are designed to 
contribute toward the recovery of two-thirds of the budgeted CAT costs 
for the relevant period.\10\ The CAT Funding Model is designed to 
require that the Participants contribute to the recovery of the 
remaining one-third of the budgeted CAT costs.\11\ Participants would 
be subject to the same Fee Rate as CEBBs and CEBSs.\12\ While CAT Fees 
charged to Industry Members become effective in accordance with the 
requirements of Section 19(b) of the Exchange Act,\13\ CAT fees charged 
to Participants are implemented via an approval of the CAT fees by the 
Operating Committee in accordance with the requirements of the CAT NMS 
Plan.\14\ Accordingly, this filing does not address Participant CAT 
fees as they are described in the CAT NMS Plan.\15\
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    \10\ Section 11.3(a)(iii)(A) of the CAT NMS Plan.
    \11\ Section 11.3(a)(ii)(A) of the CAT NMS Plan.
    \12\ Section 11.3(a)(ii) of the CAT NMS Plan.
    \13\ Section 11.3(a)(i)(A)(I) of the CAT NMS Plan.
    \14\ CAT Funding Model Approval Order at 13448.
    \15\ See Section 11.3(a)(ii) and Appendix B of the CAT NMS Plan.
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    CAT LLC proposes to charge CEBBs and CEBSs (as described in more 
detail below) CAT Fee 2026-1 to recover the reasonably budgeted CAT 
costs for the period from May 1, 2026 through December 31, 2026 in 
accordance with the CAT Funding Model. To implement this fee on behalf 
of CAT LLC, the CAT NMS Plan requires the Participants to ``file with 
the SEC under Section 19(b) of the Exchange Act any such fees on 
Industry Members that the Operating Committee approves, and such fees 
shall be labeled as `Consolidated Audit Trail Funding Fees.''' \16\ The 
Plan further states that ``[o]nce the Operating Committee has approved 
such Fee Rate, the Participants shall be required to file with the SEC 
pursuant to Section 19(b) of the Exchange Act CAT Fees to be charged to 
Industry Members calculated using such Fee Rate.'' \17\ Accordingly, 
the purpose of this filing is to implement a CAT Fee on behalf of CAT 
LLC for Industry Members, referred to as CAT Fee 2026-1, in accordance 
with the CAT NMS Plan.
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    \16\ Section 11.1(b) of the CAT NMS Plan.
    \17\ Section 11.3(a)(i)(A)(I) of the CAT NMS Plan.
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(1) CAT Executing Brokers
    CAT Fee 2026-1 will be charged to each CEBB and CEBS for each 
applicable transaction in Eligible Securities.\18\ The CAT NMS Plan 
defines a ``CAT Executing Broker'' to mean:
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    \18\ In its approval of the CAT Funding Model, the Commission 
determined that charging CAT fees to CAT Executing Brokers was 
appropriate. In reaching this conclusion, the Commission noted that 
the use of CAT Executing Brokers is appropriate because the CAT 
Funding Model is based upon the calculation of executed equivalent 
shares, and, therefore, charging CAT Executing Brokers would reflect 
their executing role in each transaction. Furthermore, the 
Commission noted that, because CAT Executing Brokers are already 
identified in transaction reports from the exchanges and FINRA's 
equity trade reporting facilities recorded in CAT Data, charging CAT 
Executing Brokers could streamline the billing process. CAT Funding 
Model Approval Order at 13413.

(a) with respect to a transaction in an Eligible Security that is 
executed on an exchange, the Industry Member identified as the Industry 
Member responsible for the order on the buy-side of the transaction and 
the Industry Member responsible for the sell-side of the transaction in 
the equity order trade event and option trade event in the CAT Data 
submitted to the CAT by the relevant exchange pursuant to the 
Participant Technical Specifications; and (b) with respect to a 
transaction in an Eligible Security that is executed otherwise than on 
an exchange and required to be reported to an equity trade reporting 
facility of a registered national securities association, the Industry 
Member identified as the executing broker and the Industry Member 
identified as the contra-side executing broker in the TRF/ORF/ADF 
transaction data event in the CAT Data submitted to the CAT by FINRA 
pursuant to the Participant Technical Specifications; provided, 
however, in those circumstances where there is a non-Industry Member 
identified as the contra-side executing broker in the TRF/ORF/ADF 
transaction data event or no contra-side executing broker is identified 
in the TRF/ORF/ADF transaction data event, then the Industry Member 
identified as the executing broker in the TRF/ORF/ADF transaction data 
event would be treated as CAT Executing Broker for the Buyer and for 
the Seller.\19\
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    \19\ Section 1.1 of the CAT NMS Plan. In its approval order for 
the CAT Funding Model, the Commission ``recognize[d] that Industry 
Members may pass-through CAT fees for customer executed volume.'' 
See CAT Funding Model Approval Order at 13424.
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    The following fields of the Participant Technical Specifications 
indicate the CAT Executing Brokers for the transactions executed on an 
exchange:
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    \20\ See Table 23, Section 4.7 (Order Trade Event) of the CAT 
Reporting Technical Specifications for Plan Participants, Version 
4.2.0-r2 (Feb. 24, 2026), <a href="https://www.catnmsplan.com/sites/default/files/2026-02/02.24.2026-CAT_Reporting_Technical_Specifications_for_Participants_4.2.0-r2.pdf">https://www.catnmsplan.com/sites/default/files/2026-02/02.24.2026-CAT_Reporting_Technical_Specifications_for_Participants_4.2.0-r2.pdf</a> 
(``CAT Reporting Technical Specifications for Plan Participants'').

                                          Equity Order Trade (EOT) \20\
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               No.                     Field name           Data type           Description        Include key
----------------------------------------------------------------------------------------------------------------
12.n.8/13.n.8...................  member.............  Member Alias.......  The identifier for   C
                                                                             the member firm
                                                                             that is
                                                                             responsible for
                                                                             the order on this
                                                                             side of the trade.
                                                                            Not required if
                                                                             there is no order
                                                                             for the side as
                                                                             indicated by the
                                                                             NOBUYID/NOSELLID
                                                                             instruction.

[[Page 26079]]

 
                                                                            This must be
                                                                             provided if
                                                                             orderID is
                                                                             provided.
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                                          Equity Order Trade (EOT) \21\
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               No.                     Field name           Data type           Description        Include key
----------------------------------------------------------------------------------------------------------------
16.n.13/17.n.13.................  member.............  Member Alias.......  The identifier for   R
                                                                             the member firm
                                                                             that is
                                                                             responsible for
                                                                             the order.
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    In addition, the following fields of the Participant Technical 
Specifications would indicate the CAT Executing Brokers for the 
transactions executed otherwise than on an exchange:
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    \21\ See Table 52, Section 5.2.5.1 (Simple Option Trade Event) 
of the CAT Reporting Technical Specifications for Plan Participants.
    \22\ See Table 62, Section 6.1 (TRF/ORF/ADF Transaction Data 
Event) of the CAT Reporting Technical Specifications for Plan 
Participants.

                                  TRF/ORF/ADF Transaction Data Event (TRF) \22\
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               No.                     Field name           Data type           Description        Include key
----------------------------------------------------------------------------------------------------------------
26..............................  reportingExecutingM  Member Alias.......  MPID of the          R
                                   pid.                                      executing party.
28..............................  contraExecutingMpid  Member Alias.......  MPID of the contra-  C
                                                                             side executing
                                                                             party..
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(2) Calculation of Fee Rate 2026-1
    The Operating Committee determined the Fee Rate to be used in 
calculating CAT Fee 2026-1 (``Fee Rate 2026-1'') by dividing the 
reasonably budgeted CAT costs (``Budgeted CAT Costs 2026-1'') for the 
period from May 1, 2026 through December 31, 2026 (``CAT Fee 2026-1 
Period'') by the reasonably projected total executed share volume of 
all transactions in Eligible Securities for the eight-month recovery 
period, as discussed in detail below.\23\ Based on this calculation, 
the Operating Committee has determined that Fee Rate 2026-1 would be 
$0.000003799483243631228 per executed equivalent share. This rate is 
then divided by three and rounded to determine the fee rate of 
$0.000001 per executed equivalent share that will be assessed to CEBBs 
and CEBSs, as also discussed in detail below.
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    \23\ Section 11.3(a)(i) of the CAT NMS Plan.
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(A) CAT Fee 2026-1 Period
    CAT LLC proposes to implement CAT Fee 2026-1. CAT LLC proposes to 
commence CAT Fee 2026-1 during the year, rather than at the beginning 
of the year. Accordingly, CAT Fee 2026-1 ``would be calculated as 
described in paragraph (II)'' of Section 11.3(a)(i)(A) of the CAT NMS 
Plan,\24\ which states that ``[d]uring each year, the Operating 
Committee will calculate a new Fee Rate by dividing the reasonably 
budgeted CAT costs for the remainder of the year by the reasonably 
projected total executed equivalent share volume of all transactions in 
Eligible Securities for the remainder of the year.'' \25\ For CAT Fee 
2026-1, the reasonably budgeted CAT costs for ``the remainder of the 
year'' are the reasonably budgeted CAT costs from May 1, 2026 through 
December 31, 2026 as set forth in the updated annual budget for 2026 
for CAT LLC approved by the Operating Committee on March 31, 2026 
(``Updated 2026 CAT Budget'').\26\
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    \24\ Section 11.3(a)(i)(A)(IV) of the CAT NMS Plan.
    \25\ Section 11.3(a)(i)(A)(II) of the CAT NMS Plan.
    \26\ The Updated 2026 CAT Budget is available on the CAT website 
(<a href="https://www.catnmsplan.com/sites/default/files/2026-04/03.31.26-CAT-2026-Budget.pdf">https://www.catnmsplan.com/sites/default/files/2026-04/03.31.26-CAT-2026-Budget.pdf</a>).
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    (B) Executed Equivalent Shares for Transactions in Eligible 
Securities
    Under the CAT NMS Plan, for purposes of calculating CAT Fees, 
executed equivalent shares in a transaction in Eligible Securities will 
be reasonably counted as follows: (1) each executed share for a 
transaction in NMS Stocks will be counted as one executed equivalent 
share; (2) each executed contract for a transaction in Listed Options 
will be counted based on the multiplier applicable to the specific 
Listed Options (i.e., 100 executed equivalent shares or such other 
applicable multiplier); and (3) each executed share for a transaction 
in OTC Equity Securities will be counted as 0.01 executed equivalent 
share.\27\
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    \27\ Section 11.3(a)(i)(B) of the CAT NMS Plan. In approving the 
CAT Funding Model, the Commission concluded that ``the use of 
executed equivalent share volume provides an appropriate basis for 
the calculation of CAT fees.'' CAT Funding Model Approval Order at 
13413.
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(C) Budgeted CAT Costs 2026-1
    The CAT NMS Plan states that ``[t]he budgeted CAT costs for the 
year shall be comprised of all reasonable fees, costs and expenses 
reasonably budgeted to be incurred by or for the Company in connection 
with the development, implementation and operation of the CAT as set 
forth in the annual operating budget approved by the Operating 
Committee pursuant to Section 11.1(a) of the CAT NMS Plan, or as 
adjusted during the year by the Operating Committee.'' \28\ Section 
11.1(a) of the CAT NMS Plan describes the requirement for the
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    \28\ Section 11.3(a)(i)(C) of the CAT NMS Plan.
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    Operating Committee to approve an operating budget for CAT LLC on 
an annual basis. It requires the budget to ``include the projected 
costs of the Company, including the costs of developing and operating 
the CAT for the upcoming year, and the sources of all revenues to cover 
such costs, as well as the funding of any reserve that the Operating 
Committee reasonably deems

[[Page 26080]]

appropriate for the prudent operation of the Company.'' Section 
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11.1(a)(i) of the CAT NMS Plan further states that:

[w]ithout limiting the foregoing, the reasonably budgeted CAT costs 
shall include technology (including cloud hosting services, operating 
fees, CAIS operating fees, change request fees and capitalized 
developed technology costs), legal, consulting, insurance, professional 
and administration, and public relations costs, a reserve and such 
other cost categories as reasonably determined by the Operating 
Committee to be included in the budget.
    In accordance with the requirements under the CAT NMS Plan, the 
Operating Committee approved an annual budget for 2026 for CAT LLC 
(``Original 2026 CAT Budget'') on December 11, 2025.\29\ On March 31, 
2026, the Operating Committee approved an updated budget for 2026, 
referred to as the Updated 2026 CAT Budget. The Updated 2026 CAT Budget 
includes actual costs for each category for January and February 2026, 
with updated estimated costs for the remainder of the year. The updated 
costs for May through December as included in the Updated 2026 CAT 
Budget (i.e., Budgeted CAT Costs 2026-1) are the costs used in 
calculating CAT Fee 2026-1.\30\ The 2026 CAT budgets, both the Original 
2026 CAT Budget and the Updated 2026 CAT Budget, were prepared on the 
accrual basis of accounting.\31\
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    \29\ The Original 2026 CAT Budget is available on the CAT 
website (<a href="https://www.catnmsplan.com/sites/default/files/2025-12/12.08.25-CAT-LLC-2026-Financial_and_Operating_Budget.pdf">https://www.catnmsplan.com/sites/default/files/2025-12/12.08.25-CAT-LLC-2026-Financial_and_Operating_Budget.pdf</a>).
    \30\ The version of the Updated 2026 CAT Budget set forth on the 
CAT website is presented on a quarterly basis, but is prepared based 
on more granular detail. The costs for May and June are estimated 
based on two-thirds of costs for Q2 where the budgeted monthly 
amounts are consistent. For those cases in which the costs for a 
category vary from month to month in Q2, the specific budgeted 
amounts for May and June are noted.
    \31\ CAT budgets for periods prior to 2025 were prepared on the 
cash basis of accounting, as such budgets were primarily used to 
determine the dollar amount of promissory notes from the 
Participants that were required to fund the ongoing operations of 
the CAT. Commencing in 2025, with the contemplated recovery of costs 
from Industry Members and the Participants via CAT Fees, the 
Original 2025 CAT Budget was prepared on the accrual basis of 
accounting to properly match projected revenues with estimated 
expenses incurred. A cash basis budget reflects expenditures when 
paid, while an accrual basis budget reflects expenditures when 
incurred. In moving from a cash basis budget to an accrual basis 
budget, there is no double counting of expenses.
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    As described in detail below, the Budgeted CAT Costs 2026-1 would 
be $15,149,648. CEBBs collectively will be responsible for one-third of 
the Budgeted CAT Costs 2026-1 (which is $5,049,882.67), and CEBSs 
collectively will be responsible for one-third of the Budgeted CAT 
Costs 2026-1 (which is $5,049,882.67).
    The following describes in detail the Budgeted CAT Costs 2026-1 for 
CAT Fee 2026-1. The following cost details are provided in accordance 
with the requirement in the CAT NMS Plan to provide in the fee filing 
the following:

the budget for the upcoming year (or remainder of the year, as 
applicable), including a brief description of each line item in the 
budget, including (1) technology line items of cloud hosting services, 
operating fees, CAIS operating fees, change request fees and 
capitalized developed technology costs, (2) legal, (3) consulting, (4) 
insurance, (5) professional and administration, and (6) public 
relations costs, a reserve and/or such other categories as reasonably 
determined by the Operating Committee to be included in the budget, and 
the reason for changes in each such line item from the prior CAT fee 
filing.\32\
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    \32\ Section 11.3(a)(iii)(B) of the CAT NMS Plan.
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    Each of the costs described below is reasonable, appropriate and 
necessary for the creation, implementation and maintenance of CAT.
    The following table breaks down the Budgeted CAT Costs 2026-1 into 
the categories set forth in Section 11.3(a)(iii)(B) of the CAT NMS 
Plan.\33\ The Budgeted CAT Costs 2026-1 reflect the costs for May 
through December as included in the Updated 2026 CAT Budget. The 
Budgeted CAT Costs 2026-1 are the costs used in calculating CAT Fee 
2026-1.
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    \33\ Note that costs and related cost calculations provided in 
this filing may reflect minor variations from the budgeted costs due 
to rounding.

                        Budgeted CAT Costs 2026-1
------------------------------------------------------------------------
                                   Budgeted CAT costs 2026-1 \b\ (i.e.,
        Budget category                costs for May-December 2026)
------------------------------------------------------------------------
Capitalized Developed                                     \c\ $3,450,000
 Technology Costs \a\..........
Technology Costs...............                               83,737,680
    Cloud Hosting Services.....                           \d\ 49,866,667
    Operating Fees.............                           \e\ 19,691,953
    CAIS Operating Fees........                           \f\ 14,179,060
    Change Request Fees........                                    \g\ 0
Legal..........................                            \h\ 5,670,452
Consulting.....................                            \i\ 1,025,957
Insurance......................                              \j\ 852,768
Professional and administration                              \k\ 749,151
Public relations...............                                    \l\ 0
Interest Income................                         \m\ ($1,453,382)
                                ----------------------------------------
    Total Costs................                               94,032,626
Reserve (25% of Total Costs)...                               23,508,157
                                ----------------------------------------
Total Costs and Reserve........                              117,540,783
Use of Existing Reserve........                        \n\ (102,391,135)
Total Budgeted CAT Costs 2026-1                               15,149,648
------------------------------------------------------------------------
\a\ The non-cash amortization of these capitalized developed technology
  costs to be incurred during the CAT Fee 2026-1 Period have been
  appropriately excluded from the above table.\34\
\b\ Budgeted CAT Costs 2026-1 described in this table of costs were
  determined based on an analysis of a variety of factors, including
  historical costs/invoices, estimated costs from respective vendors/
  service providers, contractual terms with vendors/service providers,
  anticipated service levels and needs, and discussions with vendors and
  Participants.
\c\ This cost number for capitalized developed technology costs reflects
  (1) capitalized developed technology costs of $3,450,000 for May, $0
  for June and $0 for the third and fourth quarters of 2026 as included
  in the Updated 2026 CAT Budget; and (2) $0 for the Software License
  Fee 2026 for the second, third, and fourth quarters of 2026 as
  included in the Updated 2026 CAT Budget: ($3,450,000 + $0 + $0 + $0) +
  ($0 + $0 + $0) = $3,450,000.

[[Page 26081]]

 
\d\ This cost number for cloud hosting services reflects two-thirds of
  the cloud hosting services costs for the second quarter and the cloud
  hosting services for the third and fourth quarters of 2026 as included
  in the Updated 2026 CAT Budget: (\2/3\ x $18,700,000) + $18,700,000 +
  $18,700,000 = $49,866,667.
\e\ This cost number for operating fees reflects (1) two-thirds of the
  Non-CAIS fixed operating fees for the second quarter and the Non-CAIS
  fixed operating fees for the third and fourth quarters of 2026 as
  included in the Updated 2026 CAT Budget and (2) two-thirds of the
  market data vendor fees for the second quarter and the market data
  vendor fees for the third and fourth quarter of 2026 as included in
  the Updated 2026 CAT Budget: ((\2/3\ x $7,191,853) + $7,191,853 +
  $7,191,853) + ((\2/3\ x $192,630) + $192,630 + $192,630) =
  $19,691,953.
\f\ This cost number for CAIS operating fees reflects two-thirds of the
  CAIS fixed operating fees for the second quarter and the CAIS fixed
  operating fees for the third and fourth quarters of 2026 as included
  in the Updated 2026 CAT Budget: (\2/3\ x $5,317,147) + $5,317,147 +
  $5,317,147 = $14,179,060.
\g\ This $0 cost number for change requests reflects the fact that there
  were no change request fees set forth in the Updated 2026 CAT Budget.
\h\ This cost number for legal services reflects two-thirds of the legal
  costs for the second quarter and the legal costs for the third and
  fourth quarters of 2026 as included in the Updated 2026 CAT Budget:
  (\2/3\ x $2,145,170) + $2,125,170 + $2,115,170 = $5,670,452.
\i\ This cost number for consulting services reflects two-thirds of the
  consulting costs for the second quarter and the consulting costs for
  the third and fourth quarters of 2026 as included in the Updated 2026
  CAT Budget: (\2/3\ x $384,734) + $384,734 + $384,734 = $1,025,957.
\j\ This cost number for insurance reflects two-thirds of the insurance
  costs for the second quarter and the insurance costs for the third and
  fourth quarters of 2026 as included in the Updated 2026 CAT Budget:
  (\2/3\ x $300,977) + $321,042 + $331,074 = $852,768.
\k\ This cost number for professional and administration services
  reflects two-thirds of the professional and administration costs for
  the second quarter and the professional and administration costs for
  the third and fourth quarters of 2026 as included in the Updated 2026
  CAT Budget: (\2/3\ x $280,932) + $280,932 + $280,932 = $749,151.
\l\ This $0 cost number of change requests reflects the fact that there
  were no change request fees set forth in the Updated 2026 CAT Budget.
\m\ This interest income reflects interest income (net of bank fees) of
  $517,208 for May and June and interest income (net of bank fees) for
  the third and fourth quarters of 2026 as included in the Updated 2026
  CAT Budget: $517,208 + $571,010 + $365,164 = $1,453,382. Note that
  interest income for May and June 2026 of $517,208 is slightly less
  than two-thirds of $809,598 (which is $539,732) for the second quarter
  as the amount of interest income varies from month to month.
\n\ This amount for the use of the existing reserve is calculated by
  subtracting from the Accrued Liquidity Reserve Balance as of the
  Beginning of the Year in the Updated 2026 CAT Budget the 25%
  Incremental Liquidity Reserve Accrued during 2026 for the first
  quarter and for April of 2026 as included in the Updated 2026 CAT
  Budget: $155,403,378--($41,800,153 + $11,212,091) = $102,391,135. Note
  that the 25% Incremental Liquidity Reserved Accrued during 2026 for
  April 2026 of $11,212,091 is slightly more than one-third of
  $33,366,432 (which is $11,122,144) for the second quarter as the
  amount of the 25% Incremental Liquidity Reserved Accrued during 2026
  varies from month to month.

    To the extent that CAT LLC enters into notes with Participants or 
others to pay costs incurred during the period in which CAT Fee 2026-1 
is in effect, CAT LLC will use the proceeds from CAT Fee 2026-1 and the 
related Participant CAT fees to repay such notes.
---------------------------------------------------------------------------

    \34\ With respect to certain costs that were ``appropriately 
excluded,'' such excluded costs relate to the amortization of 
capitalized technology costs, which are amortized over the life of 
the Plan Processor Agreement. As such costs have already been 
otherwise reflected in the filing, their inclusion would double 
count the capitalized technology costs. In addition, amortization is 
a non-cash expense.
---------------------------------------------------------------------------

    The following table compares the annual budgeted CAT costs as set 
forth in the updated annual CAT budget for 2025 approved by the 
Operating Committee in May 2025 (``May Updated 2025 CAT Budget''),\35\ 
the updated annual CAT budget for 2025 approved by the Operating 
Committee in November 2025 (``November Updated 2025 CAT Budget''),\36\ 
the Original 2026 CAT Budget and the Updated 2026 CAT Budget, and is 
provided for informational purposes. In each case, the costs provided 
reflect the costs for the entire year for each of the budgets; this 
differs from the above chart which focuses on budgeted costs for the 
period from May 1, 2026 through December 31, 2026, which, as noted, are 
the costs that are used in the calculation of the fee rate in this fee 
filing.
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    \35\ The May Updated 2025 CAT Budget is available on the CAT 
website (<a href="https://www.catnmsplan.com/sites/default/files/2025-05/05.19.25-CAT-LLC-2025-Financial_and_Operating-Budget.pdf">https://www.catnmsplan.com/sites/default/files/2025-05/05.19.25-CAT-LLC-2025-Financial_and_Operating-Budget.pdf</a>).
    \36\ The November Updated 2025 CAT Budget is available on the 
CAT website (<a href="https://www.catnmsplan.com/sites/default/files/2025-12/12.22.25_CAT-LLC-2025-Finacial_and_Operating-Budget.pdf">https://www.catnmsplan.com/sites/default/files/2025-12/12.22.25_CAT-LLC-2025-Finacial_and_Operating-Budget.pdf</a>).

                                     Comparison of Full Year Budgeted Costs
----------------------------------------------------------------------------------------------------------------
                                                                 Full year of
                                           Full year of  2025   2025 budgeted     Full year of     Full year of
                                              budgeted  CAT    CAT costs  from   2026 budgeted    2026 budgeted
             Budget Category                   costs  from      updated  2025   CAT costs  from  CAT costs  from
                                            updated  2025 CAT    budget (Nov.    original  2026   updated  2026
                                            budget (May 2025)       2025)          CAT budget       CAT budget
----------------------------------------------------------------------------------------------------------------
Capitalized Developed Technology Costs             $4,871,962       $5,163,991       $8,228,827       $8,378,964
 \a\.....................................
Technology Costs.........................         211,548,472      173,091,660      137,514,003      128,643,476
    Cloud Hosting Services...............         159,230,937      122,084,811       81,900,006       77,529,362
    Operating Fees \b\...................          30,817,686       29,932,001       34,345,413       29,845,524
    CAIS Operating Fees..................          20,749,848       20,749,848       21,268,584       21,268,590
    Change Request Fees..................             750,000          325,000                0                0
Legal....................................           7,370,002        7,312,547        8,485,000        8,939,184
Consulting...............................           1,749,998        1,750,000        1,550,000        1,550,000
Insurance................................           1,594,452        1,368,750        1,505,625        1,254,070
Professional and administration..........           1,193,090        1,392,679        1,145,500        1,085,500
Public relations.........................               6,575            6,575                0                0
Interest Income..........................                   0      (2,510,223)      (1,995,958)      (2,806,325)
                                          ----------------------------------------------------------------------
    Total Annual CAT Costs\c\............         228,334,551      187,575,979      156,432,998      147,044,869
----------------------------------------------------------------------------------------------------------------
\a\ This cost number is calculated by adding together the Capitalized Developed Technology Costs and the
  Software License Fee for each budget.
\b\ This cost number is calculated by adding together the Operating fees, the Cyber Insurance Premium Adjustment
  (if any) and market data vendor fees (if any separate fees) for each budget.
\c\ This total cost number does not include an amount for a reserve.


[[Page 26082]]

    In addition, the following table compares the budgeted costs for 
January and February 2026 that were used in drafting the Original 2026 
CAT Budget with the actual costs for January and February 2026 that 
were used in drafting the Updated 2026 CAT Budget. The Original 2026 
CAT Budget includes budgeted costs for January and February 2026, 
whereas the Updated 2026 CAT Budget includes actual costs for January 
and February 2026. The variance from the budgeted costs for January and 
February 2026 to the actual costs for January and February 2026 are 
used in this filing in supporting the reasonableness of the estimates 
for each category of costs.

                                           Comparison of Budgeted and Actual Costs for January & February 2026
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                              Actual costs for
                                              Budgeted costs for January    January &  February
              Budget category                & February 2026 (as used in      2026 (as used in      Variance from budgeted costs for January & February
                                             drafting the  original 2026    drafting the updated    2026 to actual costs for January & February of 2026
                                                     CAT budget)              2026 CAT budget)
--------------------------------------------------------------------------------------------------------------------------------------------------------
Capitalized Developed Technology Costs \a\.                     $671,472               $4,145,430  Increase by $3,473,958. \b\
Technology Costs...........................                   25,894,000               21,501,183
    Cloud Hosting Services.................                   17,200,000               12,829,362  Decrease by $4,370,638. \c\
    Operating Fees.........................                    5,149,236                5,127,057  Decrease by $22,179.
    CAIS Operating Fees....................                    3,544,764                3,544,764  No change.
    Change Request Fees....................                            0                        0  No change.
Legal......................................                    1,424,166                1,838,617  Increase by $414,451.\d\
Consulting.................................                      258,334                  267,554  Increase by $9,220.
Insurance..................................                      250,938                  200,652  Decrease by $50,286.
Professional and administration............                      190,916                  149,061  Decrease by $41,855.
Public relations...........................                            0                        0  No change.
Interest Income............................                    (758,343)                (757,527)  Decrease by $816.
                                            ------------------------------------------------------------------------------------------------------------
    Total..................................                   27,931,483               27,344,970  Decrease by $586,513
--------------------------------------------------------------------------------------------------------------------------------------------------------
\a\ This cost number for capitalized developed technology costs is calculated by adding together the capitalized developed technology costs and the
  software license fee for each budget.
\b\ The variance for capitalized developed technology costs is the result of costs related to the software license fee in accordance with the Plan
  Processor Agreement with FCAT.
\c\ This variance is attributable to lower than forecasted market volumes and the impact of lower processing costs due to shutting down certain
  functionalities.
\d\ The variance in legal costs is attributable to unanticipated issues that required additional legal efforts on behalf of CAT LLC that developed after
  the budget was created.

(i) Technology Costs--Cloud Hosting Services
(a) Description of Cloud Hosting Services Costs
    Section 11.3(a)(iii)(B)(B)(1) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to provide a brief description of the 
cloud hosting services costs set forth in the budget. The Operating 
Committee approved an operating budget for the CAT pursuant to Section 
11.1(a) of the CAT NMS Plan that included $49,866,667 in technology 
costs for cloud hosting services for the CAT Fee 2026-1 Period. The 
technology costs for cloud hosting services represent costs reasonably 
budgeted to be incurred for services provided by the cloud services 
provider for the CAT, Amazon Web Services, Inc. (``AWS'') during the 
CAT Fee 2026-1 Period.
    In the agreement between CAT LLC and the Plan Processor for the CAT 
(``Plan Processor Agreement''), FINRA CAT, LLC (``FCAT''), AWS was 
named as the subcontractor to provide cloud hosting services. Under the 
Plan Processor Agreement, CAT LLC is required to pay FCAT the fees 
incurred by the Plan Processor for cloud hosting services provided by 
AWS as FCAT's subcontractor on a monthly basis for the cloud hosting 
services, and FCAT, in turn, pays such fees to AWS. The fees for cloud 
hosting services were negotiated by FCAT on an arm's length basis with 
the goals of managing costs and receiving services required to comply 
with the CAT NMS Plan and Rule 613, taking into consideration a variety 
of factors, including the expected volume of data, the breadth of 
services provided and market rates for similar services. Services 
provided by AWS include storage services, databases, compute services 
and other services (such as networking, management tools and DevOps 
tools), as well as various environments for CAT, such as development, 
performance testing, test, and production environments. FCAT utilizes 
such cloud hosting services for a broad array of services for the CAT, 
such as data ingestion, data management, and analytic tools for the 
CAT. AWS performs cloud hosting services for both the CAT transaction 
database as well as the Reference Database (previously referred to as 
the Customer and Account Information System, or ``CAIS'').\37\ It is 
anticipated that such cloud hosting services will continue during the 
CAT Fee 2026-1 Period.
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    \37\ On January 13, 2026, the SEC approved an amendment to the 
CAT NMS Plan relating to the Customer and Account Information System 
(referred to as ``CAIS''). Effective with this amendment, CAIS has 
been renamed as the ``Reference Database.'' Securities Exchange Act 
Rel. No. 104586 (Jan. 13, 2026), 91 FR 2164 (Jan. 16, 2026) (``CAIS 
Amendment''). The SEC subsequently approved another amendment to the 
CAT NMS Plan to implement various cost savings measures that made 
further changes to the Reference Database. Securities Exchange Act 
Rel. No. 105107 (Mar. 27, 2026), 91 FR 16284 (Mar. 27, 2026) (``Cost 
Savings Amendment'').
---------------------------------------------------------------------------

    The cost for AWS cloud services for the CAT is a function of the 
volume of CAT Data, largely as a result of the processing and storage 
of the CAT Data.\38\ The greater the amount of CAT Data, the greater 
the cost of AWS services to CAT LLC. During the CAT Fee 2026-1 Period, 
it is expected that AWS would provide cloud hosting services for 
volumes of CAT Data far in excess of the volume predictions set

[[Page 26083]]

forth in the CAT NMS Plan. The CAT NMS Plan states, when all CAT 
Reporters are submitting their data to the CAT, it ``must be sized to 
receive[,] process and load more than 58 billion records per day,'' 
\39\ and that ``[i]t is expected that the Central Repository will grow 
to more than 29 petabytes of raw, uncompressed data.'' \40\ In contrast 
with those estimates, the Q3 2025 data volumes averaged 792 billion 
events per day. The highest peak data volume to date of 1.45 trillion 
events was recorded on April 7, 2025. The top five peak days were 
recorded in April 2025.
---------------------------------------------------------------------------

    \38\ In addition to the effect of the data volume on the cloud 
hosting costs, the processing timelines set forth in the Plan 
contribute to the cloud hosting costs. For further discussion of the 
effect of processing timelines on cloud hosting costs, see Section 
3(b)(2)(A)(i) below.
    \39\ Section 1.3 of Appendix D of the CAT NMS Plan, n.262.
    \40\ Section 1.3 of Appendix D of the CAT NMS Plan.
---------------------------------------------------------------------------

    CAT LLC estimates that the budget for cloud hosting services costs 
during the CAT Fee 2026-1 Period will be approximately $49,866,667.\41\ 
The budget for cloud hosting services costs during the CAT Fee 2026-1 
Period is calculated based on the Updated 2026 CAT Budget. 
Specifically, this estimate was calculated by adding two-thirds of the 
cloud hosting services costs for the second quarter and the cloud 
hosting services for the third and fourth quarters of 2026 as included 
in the Updated 2026 CAT Budget.\42\
---------------------------------------------------------------------------

    \41\ See chart entitled ``Budgeted CAT Costs 2026-1'' in Section 
3(a)(2)(C) above.
    \42\ This calculation is (\2/3\ x $18,700,000) + $18,700,000 + 
$18,700,000 = $49,866,667.
---------------------------------------------------------------------------

    CAT LLC estimated the budget for the cost for cloud hosting 
services for the CAT Fee 2026-1 Period based on an assumption of 35% 
annual year-over-year volume growth for the transaction database and an 
assumption of 5% annual year-over-year volume growth for the Reference 
Database. CAT LLC determined these growth assumptions in coordination 
with FCAT.\43\
---------------------------------------------------------------------------

    \43\ Note that these growth rates are based on events processed 
and stored in the CAT. Executed transactions are a small subset of 
such events. As a result, the number of transactions in the CAT, 
and, hence, the number of executed equivalent shares, is not 
directly correlated with the number of events processed in the CAT 
or the costs of cloud hosting services for the CAT. Accordingly, the 
number of executed equivalent shares may stay relatively constant 
from year to year while the number of events processed and stored in 
the CAT may grow significantly.
---------------------------------------------------------------------------

    This process for estimating the budget for cloud hosting services 
costs for the CAT Fee 2026-1 Period is the same process by which CAT 
LLC estimated the cloud hosting services costs for the Original 2026 
CAT Budget.
    The Original 2026 CAT Budget estimated a budget for cloud hosting 
services of $17,200,000 for January and February 2026. The actual costs 
for cloud hosting services for January and February 2026, which are set 
forth in the Updated 2026 CAT Budget, were $12,829,362. Therefore, the 
variance between budgeted and actual cloud hosting services costs for 
January and February 2026 was an approximate decrease of $4,370,638 as 
a result of lower volumes and a change in functionality.\44\ 
Accordingly, CAT LLC believes that the process for estimating the 
budgeted cloud hosting services costs for the CAT Fee 2026-1 Period is 
reasonable.
---------------------------------------------------------------------------

    \44\ See chart entitled ``Comparison of Budgeted and Actual 
Costs for January & February 2026'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
the line item for cloud hosting services costs from the prior CAT Fee 
filing. As this is the first Prospective CAT Fee filing under this CAT 
Funding Model, this filing describes the changes in the cloud hosting 
services costs from the Original 2026 Budget.\45\ Specifically, the 
following describes the differences in the costs for cloud hosting 
services included in the Original 2026 CAT Budget versus the Updated 
2026 CAT Budget, and the reasons for any changes.
---------------------------------------------------------------------------

    \45\ The last Prospective CAT Fee, CAT Fee 2025-2, was 
implemented pursuant to the prior CAT funding model. Moreover, the 
final invoice for CAT Fee 2025-2 was sent in December 2025, and, 
therefore, there is a six-month gap between the final invoice for 
CAT Fee 2025-2 and the first invoice for CAT Fee 2026-1, which would 
be in June 2026. Accordingly, this filing describes the changes in 
the cloud hosting services costs from the Original 2026 Budget.
---------------------------------------------------------------------------

    The annual 2026 budgeted costs for cloud hosting services included 
in the Original 2026 CAT Budget were $81,900,006, and the annual 2026 
budgeted costs for cloud hosting services included in the Updated 2026 
CAT Budget are $77,529,362. Accordingly, budgeted annual costs for 
cloud hosting services decreased by $4,370,644 from the Original 2026 
CAT Budget to the Updated 2026 CAT Budget, which is an approximate 5% 
reduction in cloud hosting services costs for the full year of 
2026.\46\ The budgeted decrease in costs for cloud hosting services 
reflects lower costs for January and February 2026 due to lower than 
forecasted market volumes in January and the impact of lower processing 
costs due to shutting down certain functionalities.
---------------------------------------------------------------------------

    \46\ See chart entitled ``Comparison of Full Year Budgeted 
Costs'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(ii) Technology Costs--Operating Fees
(a) Description of Operating Fees
    Section 11.3(a)(iii)(B)(B)(1) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to provide a brief description of the 
operating fees set forth in the budget. The Operating Committee 
approved an operating budget for the CAT pursuant to Section 11.1(a) of 
the CAT NMS Plan that included $19,691,953 in technology costs for 
operating fees for the CAT Fee 2026-1 Period. Operating fees are those 
fees paid by CAT LLC to FCAT as the Plan Processor to operate and 
maintain the CAT and to perform business operations related to the 
system, including compliance, security, testing, training, 
communications with the industry (e.g., management of the FINRA CAT 
Helpdesk, FAQs, website and webinars) and program management as 
required by the CAT NMS Plan. Operating fees also include market data 
provider costs, as discussed below.
    Plan Processor: FCAT. Under the Plan Processor Agreement with FCAT, 
CAT LLC is required to pay FCAT a negotiated monthly fixed price for 
the operation of the CAT. This fixed price contract was negotiated on 
an arm's length basis with the goals of managing costs and receiving 
services required to comply with the CAT NMS Plan and Rule 613, taking 
into consideration a variety of factors, including the breadth of 
services provided and market rates for similar types of activity. It is 
anticipated that FCAT will provide a variety of services to the CAT 
during the CAT Fee 2026-1 Period, including the following:
    <bullet> Provide the CAT-related functions and services as the Plan 
Processor as required by SEC Rule 613 and the CAT NMS Plan in 
connection with the operation and maintenance of the CAT;
    <bullet> Address compliance items, including drafting CAT policies 
and procedures, and addressing Regulation SCI requirements;
    <bullet> Provide support to the Operating Committee, the Compliance 
Subcommittee and CAT working groups;
    <bullet> Assist with interpretive efforts, exemptive requests and 
amendments regarding the CAT NMS Plan;
    <bullet> Oversee the security of the CAT;
    <bullet> Monitor the operation of the CAT, including with regard to 
Participant and Industry Member reporting;
    <bullet> Provide support to subcontractors under the Plan Processor 
Agreement;
    <bullet> Provide support in discussions with the Participants and 
the SEC and its staff;

[[Page 26084]]

    <bullet> Operate the FINRA CAT Helpdesk;
    <bullet> Facilitate communications with the industry, including via 
FAQs, CAT Alerts, meetings, presentations and webinars;
    <bullet> Administer the CAT website and all of its content;
    <bullet> Maintain cyber security insurance related to the CAT;
    <bullet> Assist with billing, collection and other CAT fee-related 
activity; and
    <bullet> Provide technical support and assistance with 
connectivity, data access, and user support, including the use of CAT 
Data and query tools, for Participants and the SEC staff.
    CAT LLC calculated the budget for the FCAT technology costs for 
operating fees for the CAT Fee 2026-1 Period based on the recurring 
monthly operating fees under the Plan Processor Agreement.
    Market Data Provider: Algoseek. It is anticipated that the 
operating fees costs for the CAT Fee 2026-1 Period will include costs 
related to the receipt of certain market data for the CAT pursuant to 
an agreement between FCAT and Algoseek, LLC (``Algoseek''). CAT LLC 
determined that Algoseek would provide market data that included data 
elements set forth in Section 6.5(a)(ii) of the CAT NMS Plan, and that 
the fees were reasonable and in line with market rates for the market 
data received. All costs under the contract would be treated as a 
direct pass through cost to CAT LLC. CAT LLC estimated the budget for 
the costs for Algoseek for the CAT Fee 2026-1 Period based on the 
monthly rate set forth in the agreement between Algoseek and FCAT.
    Operating Fee Estimates. CAT LLC estimates that the budget for 
operating fees during the CAT Fee 2026-1 Period will be approximately 
$19,691,953.\47\ The budget for operating fees during the CAT Fee 2026-
1 Period is calculated based on the Updated 2026 CAT Budget. 
Specifically, this estimate was calculated by adding (1) two-thirds of 
the Non-CAIS fixed operating fees for the second quarter and the Non-
CAIS fixed operating fees for the third and fourth quarters of 2026 
included in the Updated 2026 CAT Budget and (2) two-thirds of the 
market data vendor fees for the second quarter and the market data 
vendor fees for the third and fourth quarter of 2026 included in the 
Updated 2026 CAT Budget.\48\
---------------------------------------------------------------------------

    \47\ See chart entitled ``Budgeted CAT Costs 2026-1'' in Section 
3(a)(2)(C) above.
    \48\ This calculation is ((\2/3\ x $7,191,853) + $7,191,853 + 
$7,191,853) + ((\2/3\ x $192,630) + $192,630 + $192,630) = 
$19,691,953.
---------------------------------------------------------------------------

    As discussed above, CAT LLC estimated the budget for the operating 
fees during the CAT Fee 2026-1 Period based on monthly rates set forth 
in the Plan Processor Agreement and the agreement with Algoseek. CAT 
LLC also recognized that the operating fees are generally consistent 
throughout the year. This process for estimating the budget for the 
operating fees for the CAT Fee 2026-1 Period is the same process by 
which CAT LLC estimated the operating fees for the Original 2026 CAT 
Budget. The Original 2026 CAT Budget estimated a budget for operating 
fees of $5,149,236 for January and February 2026, and the actual costs 
for operating fees for January and February 2026 were $5,127,057. 
Therefore, the variance between budgeted and actual operating fees for 
this period was small--$22,179.\49\ Accordingly, CAT LLC believes that 
the process for estimating the budgeted operating fees for the CAT Fee 
2026-1 Period is reasonable.
---------------------------------------------------------------------------

    \49\ See chart entitled ``Comparison of Budgeted and Actual 
Costs for January & February 2026'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
the line item for operating fees from the prior CAT Fee filing. As this 
is the first Prospective CAT Fee filing under this CAT Funding Model, 
this filing describes the changes in the operating fees from the 
Original 2026 Budget. Specifically, the following describes the 
differences in the costs for operating fees included in the Original 
2026 CAT Budget versus the Updated 2026 CAT Budget, and the reasons for 
any changes.
    The annual 2026 budgeted costs for operating fees included in the 
Original 2026 CAT Budget were $34,345,413, and the annual 2026 budgeted 
costs for operating fees included in the Updated 2026 CAT Budget are 
$29,845,524. Accordingly, budgeted annual costs for operating fees 
decreased by $4,499,889 from the Original 2026 CAT Budget to the 
Updated 2026 CAT Budget, which is an approximate 13% reduction in 
operating fees for the full year of 2026.\50\ The budgeted decrease in 
costs for operating fees reflects the proposed amendments to the Plan 
Processor Agreement related to the recent cost savings amendments to 
the CAT NMS Plan.\51\
---------------------------------------------------------------------------

    \50\ See chart entitled ``Comparison of Full Year Budgeted 
Costs'' in Section 3(a)(2)(C) above.
    \51\ See CAIS Amendment and Cost Savings Amendment.
---------------------------------------------------------------------------

(iii) Technology Costs--CAIS Operating Fees
(a) Description of CAIS Operating Fees
    Section 11.3(a)(iii)(B)(B)(1) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to provide a brief description of the 
CAIS operating fees set forth in the budget. The Operating Committee 
approved an operating budget for the CAT pursuant to Section 11.1(a) of 
the CAT NMS Plan that included $14,179,060 in technology costs for CAIS 
operating fees for the CAT Fee 2026-1 Period. CAIS operating fees 
represent the fees paid to FCAT for services provided with regard to 
the operation and maintenance of the Reference Database (previously 
referred to as CAIS), and to perform the business operations related to 
the system, including compliance, security, testing, training, 
communications with the industry (e.g., management of the FINRA CAT 
Helpdesk, FAQs, website and webinars) and program management. The CAT 
is required under the CAT NMS Plan to capture and store Reference Data 
in the Reference Database and to create a CAT-Customer-ID for each 
Customer.\52\
---------------------------------------------------------------------------

    \52\ See Section 9 of Appendix D of the CAT NMS Plan.
---------------------------------------------------------------------------

    During the CAT Fee 2026-1 Period, it is anticipated that FCAT will 
provide services related to the Reference Database. Under the Plan 
Processor Agreement with FCAT, CAT LLC is required to pay FCAT for 
services related to the Reference Database provided by FCAT on a 
monthly basis. CAT LLC negotiated the fees for FCAT's services related 
to the Reference Database on an arm's length basis with the goals of 
managing costs and receiving services required to comply with the CAT 
NMS Plan, taking into consideration a variety of factors, including the 
services to be provided and market rates for similar types of activity. 
During the CAT Fee 2026-1 Period, it is anticipated that FCAT will 
continue to provide services relating to the ongoing operation, 
maintenance and support of the Reference Database.
    CAT LLC estimates that the budget for CAIS operating fees during 
the CAT Fee 2026-1 Period will be approximately $14,179,060.\53\ The 
budget for CAIS operating fees during the CAT Fee 2026-1 Period is 
calculated based on the Updated 2026 CAT Budget. Specifically, this 
estimate was calculated by adding two-thirds of the CAIS fixed 
operating fees for the second quarter and the CAIS fixed operating

[[Page 26085]]

fees for the third and fourth quarters of 2026 included in the Updated 
2026 CAT Budget.\54\
---------------------------------------------------------------------------

    \53\ See chart entitled ``Budgeted CAT Costs 2026-1'' in Section 
3(a)(2)(C) above.
    \54\ This calculation is (\2/3\ x $5,317,147) + $5,317,147 + 
$5,317,147 = $14,179,060.
---------------------------------------------------------------------------

    CAT LLC calculated the budget for FCAT's services related to the 
Reference Database for the CAT Fee 2026-1 Period based on the recurring 
monthly CAIS operating fees under the Plan Processor Agreement. This 
process for estimating the budget for the CAIS operating fees for the 
CAT Fee 2026-1 Period is the same process by which CAT LLC estimated 
the CAIS operating fees for the Original 2026 CAT Budget. The Original 
2026 CAT Budget estimated a budget of $3,544,764 for CAIS operating 
fees for January and February of 2026. The actual costs for CAIS 
operating fees for January and February of 2026, which are included in 
the Updated 2026 CAT Budget, were $3,544,764. There was no variance 
between budgeted and actual CAIS operating fees for the first two 
months of 2026.\55\ Accordingly, CAT LLC believes that the process for 
estimating the budgeted CAIS operating fees for the CAT Fee 2026-1 
Period is reasonable.
---------------------------------------------------------------------------

    \55\ See chart entitled ``Comparison of Budgeted and Actual 
Costs for January & February 2026'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
the line item for CAIS operating fees from the prior CAT Fee filing. As 
this is the first Prospective CAT Fee filing under this CAT Funding 
Model, this filing describes the changes in the CAIS operating fees 
from the Original 2026 Budget. Specifically, the following describes 
the differences in the costs for CAIS operating fees included in the 
Original 2026 CAT Budget versus the Updated 2026 CAT Budget, and the 
reasons for any changes.
    CAIS operating fees are based on a recurring monthly rate payable 
to FCAT and are unchanged from the Original 2026 CAT Budget to the 
Updated 2026 CAT Budget. The annual 2026 budgeted costs for CAIS 
operating fees included in the Original 2026 CAT Budget were 
$21,268,584, and the annual 2026 budgeted costs for CAIS operating fees 
included in the Updated 2026 CAT Budget are $21,268,590.\56\ 
Accordingly, the budgeted annual costs for CAIS operating fees are the 
same for both the Original 2026 CAT Budget and the Updated 2026 CAT 
Budget.
---------------------------------------------------------------------------

    \56\ See chart entitled ``Comparison of Full Year Budgeted 
Costs'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(iv) Technology Costs--Change Request Fees
(a) Description of Change Request Fees
    Section 11.3(a)(iii)(B)(B)(1) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to provide a brief description of the 
change request fees set forth in the budget. The Operating Committee 
approved an operating budget for the CAT pursuant to Section 11.1(a) of 
the CAT NMS Plan that included $0 in technology costs for change 
request fees for the CAT Fee 2026-1 Period. The technology costs 
related to change request fees include costs related to certain 
modifications, upgrades or other changes to the CAT.
    Change requests are standard practice and necessary to reflect 
operational changes, including changes related to new market 
developments, such as new market participants. In general, if CAT LLC 
determines that a modification, upgrade or other changes to the 
functionality or service is necessary and appropriate, CAT LLC will 
submit a request for such a change to the Plan Processor. The Plan 
Processor will then respond to the request with a proposal for 
implementing the change, including the cost (if any) of such a change. 
CAT LLC then determines whether to approve the proposed change.
    The change request budget line is established to include expected 
costs to be incurred in which the nature of the costs (i.e., 
capitalization versus expensing) have not yet been determined. Upon the 
incurrence of such costs, the final determination of capitalization 
versus expensing is determined and then such costs are reclassified 
from the change request line to the appropriate technology cost line 
item.
    CAT LLC estimates that the budget for change requests during the 
CAT Fee 2026-1 Period will be approximately $0.\57\ The budget for 
change requests during the CAT Fee 2026-1 Period is calculated based on 
the Updated 2026 CAT Budget. This $0 cost number for change request 
fees reflects the fact that there were no change request fees set forth 
in the Updated 2026 CAT Budget.
---------------------------------------------------------------------------

    \57\ See chart entitled ``Budgeted CAT Costs 2026-1'' in Section 
3(a)(2)(C) above.
---------------------------------------------------------------------------

    CAT LLC estimated the budget for the potential change requests for 
the CAT Fee 2026-1 Period based on, among other things, a review of 
past change requests and potential future change request needs, as well 
as discussions with FCAT. This process for estimating the budget for 
the change requests for the CAT Fee 2026-1 Period is the same process 
by which CAT LLC estimated the change requests cost for the Original 
2026 CAT Budget. The Original 2026 CAT Budget estimated a change 
request budget of $0 for January and February of 2026. The actual costs 
for change requests for January and February of 2026, which are set 
forth in the Updated 2026 CAT Budget, were $0. There was no variance 
between budgeted and actual change request costs for January and 
February of 2026.\58\ Accordingly, CAT LLC believes that the process 
for estimating the budgeted change request costs for the CAT Fee 2026-1 
Period is reasonable.
---------------------------------------------------------------------------

    \58\ See chart entitled ``Comparison of Budgeted and Actual 
Costs for January & February 2026'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
the line item for change request fees from the prior CAT Fee filing. As 
this is the first Prospective CAT Fee filing under this CAT Funding 
Model, this filing describes the changes in the change request fees 
from the Original 2026 Budget. Specifically, the following describes 
the differences (if any) in the costs for change request fees included 
in the Original 2026 CAT Budget versus the Updated 2026 CAT Budget, and 
the reasons for any changes.
    The annual 2026 budgeted costs for change requests included in the 
Original 2026 CAT Budget were $0, and the annual 2026 budgeted costs 
for change requests included in the Updated 2026 CAT Budget are $0.\59\ 
Accordingly, budgeted annual costs for change requests are the same for 
both the Original 2026 CAT Budget and the Updated 2026 CAT Budget.
---------------------------------------------------------------------------

    \59\ See chart entitled ``Comparison of Full Year Budgeted 
Costs'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(v) Technology Costs--Capitalized Developed Technology Costs
(a) Description of Capitalized Developed Technology Costs
    Section 11.3(a)(iii)(B)(B)(1) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to provide a brief description of the 
capitalized developed technology costs set forth in the budget. The 
Operating Committee approved an operating budget for the CAT pursuant 
to Section 11.1(a) of the CAT NMS Plan that includes $3,450,000 in 
technology costs for capitalized developed technology costs for the CAT 
Fee 2026-1 Period. This category of costs includes the budget for 
capitalizable application development costs incurred in the development 
of the CAT. It is anticipated that such costs will include

[[Page 26086]]

certain costs related to the software license fee for the Reference 
Database in accordance with the Plan Processor Agreement with FCAT, as 
well as costs related to a set of technology changes to be implemented 
by FCAT related to the cost savings amendments \60\ and the move to 
23x5 trading.
---------------------------------------------------------------------------

    \60\ See CAIS Amendment and Cost Savings Amendment.
---------------------------------------------------------------------------

    CAT LLC estimates that the budget for capitalized developed 
technology costs during the CAT Fee 2026-1 Period will be approximately 
$3,450,000.\61\ The budget for capitalized developed technology costs 
during the CAT Fee 2026-1 Period is calculated based on the Updated 
2026 CAT Budget. Specifically, this estimate was calculated by adding 
(1) capitalized developed technology costs of $3,450,000 for May, $0 
for June and $0 for the third and fourth quarters of 2026 included in 
the Updated 2026 CAT Budget; and (2) $0 for the Software License Fee 
2026 for the second, third, and fourth quarters of 2026 included in the 
Updated 2026 CAT Budget.\62\
---------------------------------------------------------------------------

    \61\ See chart entitled ``Budgeted CAT Costs 2026-1'' in Section 
3(a)(2)(C) above.
    \62\ This calculation is ($3,450,000 + $0 + $0 + $0) + ($0 + $0 
+ $0) = $3,450,000. Note that the $4,178,964 cost for the software 
license fee was not included in the CAT Fee 2026-1 Period.
---------------------------------------------------------------------------

    CAT LLC estimated the budget for capitalized developed technology 
costs for the CAT Fee 2026-1 Period based on an analysis of a variety 
of factors, including information related to potential technology costs 
and related contractual and Plan requirements, and discussions with 
FCAT regarding such potential technology costs. This process for 
estimating the budget for capitalized developed technology costs for 
the CAT Fee 2026-1 Period is the same process by which CAT LLC 
estimated the capitalized developed technology costs for the Original 
2026 CAT Budget. The Original 2026 CAT Budget estimated a budget for 
capitalized developed technology costs of $671,472 for January and 
February 2026, and the actual costs for capitalized developed 
technology costs for January and February 2026 were $4,145,430.\63\ The 
variance of $3,473,958 for January and February 2026 is the result of 
costs related to the software license fee for the Reference Database in 
accordance with the Plan Processor Agreement with FCAT. Accordingly, 
CAT LLC believes that the process for estimating the budgeted 
capitalized developed technology costs for the CAT Fee 2026-1 Period is 
reasonable.
---------------------------------------------------------------------------

    \63\ See chart entitled ``Comparison of Budgeted and Actual 
Costs for January & February 2026'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
the line item for capitalized developed technology costs from the prior 
CAT Fee filing. As this is the first Prospective CAT Fee filing under 
this CAT Funding Model, this filing describes the changes in the 
capitalized developed technology costs from the Original 2026 Budget. 
Specifically, the following describes the differences in the costs for 
capitalized developed technology costs as included in the Original 2026 
CAT Budget versus the Updated 2026 CAT Budget, and the reasons for any 
changes.
    The annual 2026 budget for capitalized developed technology costs 
included in the Original 2026 CAT Budget was $8,228,827, and the annual 
2026 budget for capitalized developed technology costs included in the 
Updated 2026 CAT Budget are $8,378,964.\64\ Accordingly, the annual 
budget for capitalized developed technology costs increased by $150,137 
from the Original 2026 CAT Budget to the Updated 2026 CAT Budget, which 
is an approximate 2% increase in the capitalized developed technology 
costs for the full year of 2026. This budgeted increase in the annual 
budget for capitalized developed technology costs was the result of 
costs related to the software license fee for the Reference Database in 
accordance with the Plan Processor Agreement with FCAT.
---------------------------------------------------------------------------

    \64\ See chart entitled ``Comparison of Full Year Budgeted 
Costs'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(vi) Legal Costs
(a) Description of Legal Costs
    Section 11.3(a)(iii)(B)(B)(2) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to provide a brief description of the 
legal costs set forth in the budget. The Operating Committee approved 
an operating budget for the CAT pursuant to Section 11.1(a) of the CAT 
NMS Plan that includes $5,670,452 in legal costs for the CAT Fee 2026-1 
Period. This category of costs represents budgeted costs for legal 
services for this period. CAT LLC anticipates that it will receive 
legal services from two law firms, Wilmer Cutler Pickering Hale and 
Dorr LLP (``WilmerHale'') and Jenner & Block LLP (``Jenner''), during 
the CAT Fee 2026-1 Period.
    Law Firm: WilmerHale. It is anticipated that legal costs during the 
CAT Fee 2026-1 Period will include costs related to the legal services 
performed by WilmerHale. CAT LLC anticipates that it will continue to 
employ WilmerHale during the CAT Fee 2026-1 Period based on, among 
other things, their expertise, long history with the project and 
recognition that the hourly fee rates for this law firm are anticipated 
to be in line with market rates for specialized legal expertise. 
WilmerHale's billing rates are negotiated on an annual basis and are 
determined with reference to the rates charged by other leading law 
firms for similar work. The Participants assess WilmerHale's 
performance and review prospective budgets and staffing plans submitted 
by WilmerHale on an annual basis. The legal fees will be paid by CAT 
LLC to WilmerHale.
    During the CAT Fee 2026-1 Period, it is anticipated that WilmerHale 
will provide legal services related to the following:
    <bullet> Assist with CAT fee filings and related funding issues;
    <bullet> Draft exemptive requests from CAT NMS Plan requirements 
and/or proposed amendments to the CAT NMS Plan;
    <bullet> Provide legal guidance with respect to interpretations of 
CAT NMS Plan requirements;
    <bullet> Provide legal support for the Operating Committee, 
Compliance Subcommittee, working groups and Leadership Team;
    <bullet> Draft SRO rule filings related to the CAT Compliance Rule;
    <bullet> Manage corporate governance matters, including supporting 
Operating Committee meetings and preparing resolutions and consents;
    <bullet> Assist with communications with the industry, including 
CAT Alerts and presentations;
    <bullet> Provide guidance regarding the confidentiality of CAT 
Data;
    <bullet> Assist with cost management analyses and proposals;
    <bullet> Assist with commercial contract-related matters, including 
change orders and amendments, Plan Processor Agreement items, and 
subcontract matters;
    <bullet> Provide support with regard to discussions with the SEC 
and its staff, including with respect to addressing interpretive and 
implementation issues;
    <bullet> Provide legal guidance with respect to the CAT budgets;
    <bullet> Provide background assistance to other counsel for CAT 
matters;
    <bullet> Assist with legal responses related to third-party data 
requests; and
    <bullet> Provide legal support regarding CAT policies and 
procedures.
    CAT LLC estimated the budget for the legal costs for WilmerHale for 
the CAT Fee 2026-1 Period through an analysis of a variety of factors, 
including WilmerHale fee rates, historical legal

[[Page 26087]]

fees, and information related to pending legal issues and potential 
future legal issues.
    Law Firm: Jenner. It is anticipated that legal costs during the CAT 
Fee 2026-1 Period will include costs related to the legal services 
performed by Jenner. CAT LLC anticipates that it will continue to 
employ Jenner during the CAT Fee 2026-1 Period based on, among other 
things, their expertise, history with the project and recognition that 
their hourly fee rates are in line with market rates for specialized 
legal expertise. The legal fees will be paid by CAT LLC to Jenner.
    During the CAT Fee 2026-1 Period, it is anticipated that Jenner 
will continue to provide legal assistance to CAT LLC regarding certain 
litigation matters, including: (1) CAT LLC's defense against a lawsuit 
filed in the Western District of Texas against the SEC Chair, the SEC 
and CAT LLC challenging the validity of Rule 613 and the CAT and 
alleging various constitutional, statutory, and common law claims; \65\ 
(2) CAT LLC's intervention in a lawsuit in the Eleventh Circuit filed 
by various parties against the SEC challenging the SEC's approval of 
the CAT Funding Model; \66\ and (3) a lawsuit in the Eleventh Circuit 
filed by Citadel Securities LLC seeking review of the SEC's May 20, 
2024 order \67\ granting the Participants temporary conditional 
exemptive relief related to the reporting of bids and/or offers made in 
response to a request for quote or other form of solicitation response 
provided in standard electronic format that is not immediately 
actionable.\68\ Litigation involving CAT LLC is an expense of operating 
the CAT, and, therefore, is appropriately an obligation of both 
Participants and Industry Members under the CAT Funding Model. Jenner 
also will continue to provide legal counseling to CAT LLC related to 
the above-listed litigation and other litigation risk.
---------------------------------------------------------------------------

    \65\ Davidson et al. v. Atkins et al., Case No. 6:24-cv-197 
(W.D. Tex.).
    \66\ Am. Sec. Ass'n v. SEC, Case No. 26-10936 (11th Cir.).
    \67\ Securities Exchange Act Rel. No. 100181 (May 20, 2024), 89 
FR 45715 (May 23, 2024).
    \68\ Citadel Securities v. SEC, Case No. 24-12300 (11th Cir.).
---------------------------------------------------------------------------

    CAT LLC estimated the budget for the legal costs for Jenner for the 
CAT Fee 2026-1 Period through an analysis of a variety of factors, 
including Jenner's fee rates, historical legal fees, and information 
related to pending legal issues and potential future legal issues.
    Legal Cost Estimates. CAT LLC estimates that the budget for legal 
services during the CAT Fee 2026-1 Period will be approximately 
$5,670,452.\69\ The budget for legal services during the CAT Fee 2026-1 
Period is calculated based on the Updated 2026 CAT Budget. 
Specifically, this estimate was calculated by adding budgeted costs for 
two-thirds of the legal costs for the second quarter and the legal 
costs for the third and fourth quarters of 2026 included in the Updated 
2026 CAT Budget.\70\
---------------------------------------------------------------------------

    \69\ See chart entitled ``Budgeted CAT Costs 2026-1'' in Section 
3(a)(2)(C) above.
    \70\ This calculation is (\2/3\ x $2,145,170) + $2,125,170 + 
$2,115,170 = $5,670,452.
---------------------------------------------------------------------------

    CAT LLC estimated the budget for the legal services for the CAT Fee 
2026-1 Period based on an analysis of a variety of factors, including 
law firm fee rates, historical legal fees, and information related to 
pending legal issues and potential future legal issues. This process 
for estimating the budget for the legal services for CAT Fee 2026-1 
Period is the same process by which CAT LLC estimated the legal cost 
for the Original 2026 CAT Budget. The Original 2026 CAT Budget 
estimated a budget for legal costs of $1,424,166 for January and 
February of 2026. The actual costs for legal services for January and 
February 2026, which are included in the Updated 2026 Budget, were 
$1,838,617.\71\ The increase of $414,451 was due to unanticipated 
issues that required additional legal efforts on behalf of CAT LLC that 
developed after the budget was created. Such additional costs were 
primarily due to additional legal work related to litigation matters as 
well as regulatory and corporate legal matters. Accordingly, CAT LLC 
believes that the process for estimating the budgeted legal costs for 
the CAT Fee 2026-1 Period is reasonable.
---------------------------------------------------------------------------

    \71\ See chart entitled ``Comparison of Budgeted and Actual 
Costs for January & February 2026'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
the line item for legal costs from the prior CAT Fee filing. As this is 
the first Prospective CAT Fee filing under this CAT Funding Model, this 
filing describes the changes in the legal costs from the Original 2026 
Budget. Specifically, the following describes the differences in the 
legal costs included in the Original 2026 CAT Budget versus the Updated 
2026 CAT Budget, and the reasons for any changes.
    The annual 2026 budgeted legal costs included in the Original 2026 
CAT Budget were $8,485,000, and the annual 2026 budgeted legal costs 
included in the Updated 2026 CAT Budget are $8,939,184.\72\ 
Accordingly, the annual budget for legal costs increased by $454,184 
from the Original 2026 CAT Budget to the Updated 2026 CAT Budget for 
the full year of 2026, which is an approximate 5% increase in the legal 
costs for the full year of 2026. This budgeted increase in the legal 
costs in the Updated 2026 CAT Budget from the Original 2026 Budget was 
primarily due to an anticipated increase in legal costs related to 
litigation matters as well as regulatory and corporate legal matters.
---------------------------------------------------------------------------

    \72\ See chart entitled ``Comparison of Full Year Budgeted 
Costs'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(vii) Consulting Costs
(a) Description of Consulting Costs
    Section 11.3(a)(iii)(B)(B)(3) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to provide a brief description of the 
consulting costs set forth in the budget. The Operating Committee 
approved an operating budget for the CAT pursuant to Section 11.1(a) of 
the CAT NMS Plan that included $1,025,957 in consulting costs for the 
CAT Fee 2026-1 Period. The consulting costs represent the fees 
estimated to be paid to the consulting firm Deloitte & Touche LLP 
(``Deloitte'') as project manager during the CAT Fee 2026-1 Period. The 
services provided by Deloitte to the CAT include advisory services 
related to the operation of the CAT, and meeting facilitation and 
communications coordination, vendor support and financial analyses. In 
addition, the consulting costs include the compensation for the Chair 
of the CAT Operating Committee.
    It is anticipated that the costs for CAT during the CAT Fee 2026-1 
Period will include costs related to consulting services performed by 
Deloitte. CAT LLC anticipates that it will continue to employ Deloitte 
during the CAT Fee 2026-1 Period based on, among other things, their 
expertise, long history with the project, and the recognition that it 
is anticipated that the consulting fees will remain in line with market 
rates for this type of specialized consulting work. Deloitte's fee 
rates are negotiated on an annual basis. CAT LLC assesses Deloitte's 
performance and reviews prospective budgets and staffing plans 
submitted by Deloitte on an annual basis. The consulting fees will be 
paid by CAT LLC to Deloitte.
    It is anticipated that Deloitte will provide a variety of 
consulting services to the CAT during the CAT Fee 2026-1 Period, 
including the following:
    <bullet> Implement program operations for the CAT project;
    <bullet> Provide support to the Operating Committee, the Chair of 
the Operating

[[Page 26088]]

Committee and the Leadership Team, including project management 
support, coordination and planning for meetings and communications, and 
interfacing with law firms and the SEC;
    <bullet> Assist with cost and funding matters for the CAT, 
including assistance with loans and the CAT bank account for CAT 
funding;
    <bullet> Provide support for updating the SEC on the progress of 
the development of the CAT; and
    <bullet> Provide support for third party vendors for the CAT, 
including FCAT, Anchin and the law firms engaged by CAT LLC.
    In addition, the consulting costs include the compensation for the 
Chair of the CAT Operating Committee, which is paid by CAT LLC.
    CAT LLC estimates that the budget for consulting costs during the 
CAT Fee 2026-1 Period will be approximately $1,025,957.\73\ The budget 
for consulting costs during the CAT Fee 2026-1 Period is calculated 
based on the Updated 2026 CAT Budget. Specifically, this estimate was 
calculated by adding two-thirds of the consulting costs for the second 
quarter and the consulting costs for the third and fourth quarters of 
2026 included in the Updated 2026 CAT Budget.\74\
---------------------------------------------------------------------------

    \73\ See chart entitled ``Budgeted CAT Costs 2026-1'' in Section 
3(a)(2)(C) above.
    \74\ This calculation is (\2/3\ x $2,145,170) + $2,125,170 + 
$2,115,170 = $5,670,452.
---------------------------------------------------------------------------

    CAT LLC estimates the budget for the consulting costs for Deloitte 
for the CAT Fee 2026-1 Period based on the current statement of work 
with Deloitte, which took into consideration past consulting costs, 
potential future consulting needs, the proposed rates and other 
contractual issues, and discussions with Deloitte, as well as the 
compensation arrangement for the Chair. This process for estimating the 
budget for consulting costs for the CAT Fee 2026-1 Period is the same 
process by which CAT LLC estimated the consulting costs for the 
Original 2026 CAT Budget. The Original 2026 CAT Budget estimated a 
budget for consulting services of $258,334 for January and February 
2026, and the actual costs for consulting services for January and 
February 2026, which are included in the Updated 2026 CAT Budget, were 
$267,554.\75\ Therefore, the variance between budgeted and actual 
consulting costs for January and February was approximately 4%. 
Accordingly, CAT LLC believes that the process for estimating the 
budgeted consulting costs for the CAT Fee 2026-1 Period is reasonable.
---------------------------------------------------------------------------

    \75\ See chart entitled ``Comparison of Budgeted and Actual 
Costs for January & February 2026'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
the line item for consulting costs from the prior CAT Fee filing. As 
this is the first Prospective CAT Fee filing under this CAT Funding 
Model, this filing describes the changes in the consulting costs from 
the Original 2026 Budget. Specifically, the following describes the 
differences (if any) in the consulting costs included in the Original 
2026 CAT Budget versus the Updated 2026 CAT Budget, and the reasons for 
any changes.
    The annual 2026 budget for consulting costs included in the 
Original 2026 CAT Budget was $1,550,000, and the annual 2026 budget for 
consulting costs included in the Updated 2026 CAT Budget is 
$1,550,000.\76\ Accordingly, the annual budget for consulting costs has 
not changed from the Original 2026 CAT Budget to the Updated 2026 CAT 
Budget for the full year of 2026.
---------------------------------------------------------------------------

    \76\ See chart entitled ``Comparison of Full Year Budgeted 
Costs'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(viii) Insurance Costs
(a) Description of Insurance Costs
    Section 11.3(a)(iii)(B)(B)(4) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to provide a brief description of the 
insurance costs set forth in the budget. The Operating Committee 
approved an operating budget for the CAT pursuant to Section 11.1(a) of 
the CAT NMS Plan that included $852,768 in insurance costs for the CAT 
Fee 2026-1 Period.\77\ The insurance costs represent the costs to be 
incurred for insurance for the CAT during the CAT Fee 2026-1 Period.
---------------------------------------------------------------------------

    \77\ See chart entitled ``Budgeted CAT Costs 2026-1'' in Section 
3(a)(2)(C) above.
---------------------------------------------------------------------------

    It is anticipated that the insurance costs for CAT during the CAT 
Fee 2026-1 Period will include costs related to cyber security 
liability insurance, directors' and officers' liability insurance, and 
errors and omissions liability insurance brokered by USI Insurance 
Services LLC (``USI''). Such policies are standard for corporate 
entities, and cyber security liability insurance is important for the 
CAT System. CAT LLC anticipates that it will continue to maintain this 
insurance during the CAT Fee 2026-1 Period, and notes that the annual 
premiums for these policies were competitive for the coverage provided. 
CAT LLC estimated the budget for the insurance costs for the CAT Fee 
2026-1 Period based on the insurance estimate from USI for 2026. The 
annual premiums would be paid by CAT LLC to USI.
    The budgeted insurance costs for the CAT Fee 2026-1 Period are 
based on an insurance cost estimate from USI for 2026. Accordingly, CAT 
LLC believes that the process for estimating the budgeted insurance 
costs for the CAT Fee 2026-1 Period is reasonable.
(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
the line item for insurance costs from the prior CAT Fee filing. As 
this is the first Prospective CAT Fee filing under this CAT Funding 
Model, this filing describes the changes in the insurance costs from 
the Original 2026 Budget. Specifically, the following describes the 
differences in the insurance costs included in the Original 2026 CAT 
Budget versus the Updated 2026 CAT Budget, and the reasons for any 
changes.
    The annual 2026 budgeted insurance costs included in the Original 
2026 CAT Budget were $1,505,625, and the annual 2026 budgeted insurance 
costs included in the Updated 2026 CAT Budget are $1,254,070.\78\ 
Accordingly, the annual budget for insurance costs decreased by 
$251,555 from the Original 2026 CAT Budget to the Updated 2026 CAT 
Budget for the full year of 2026, which is an approximate 16% decrease 
in the insurance costs for the full year of 2026. This budgeted 
decrease in the insurance costs in the Updated 2026 CAT Budget from the 
Original 2026 Budget was primarily due to an anticipated decrease in 
insurance premiums.
---------------------------------------------------------------------------

    \78\ See chart entitled ``Comparison of Full Year Budgeted 
Costs'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(ix) Professional and Administration Costs
(a) Description of Professional and Administration Costs
    Section 11.3(a)(iii)(B)(B)(5) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to provide a brief description of the 
professional and administration costs set forth in the budget. The 
Operating Committee approved an operating budget for the CAT pursuant 
to Section 11.1(a) of the CAT NMS Plan that included $749,151 in 
professional and administration costs for the CAT Fee 2026-1 Period. In 
adopting the CAT NMS Plan, the Commission amended the Plan to add a 
requirement that CAT LLC's financial statements be prepared in 
compliance with GAAP, audited by an independent

[[Page 26089]]

public accounting firm, and made publicly available.\79\ The 
professional and administration costs would include costs related to 
accounting and accounting advisory services to support the operating 
and financial functions of CAT, financial statement audit services by 
an independent accounting firm, preparation of tax returns, and various 
cash management and treasury functions. The professional and 
administration costs represent the fees to be paid to Anchin, Block & 
Anchin (``Anchin'') and Grant Thornton LLP (``Grant Thornton'') for 
financial services during the CAT Fee 2026-1 Period.
---------------------------------------------------------------------------

    \79\ Section 9.2 of the CAT NMS Plan.
---------------------------------------------------------------------------

    Financial Advisory Firm: Anchin. It is anticipated that the 
professional and administration costs for the CAT Fee 2026-1 Period 
will include costs related to financial advisory services performed by 
Anchin. CAT LLC anticipates that it will continue to employ Anchin 
during the CAT Fee 2026-1 Period based on, among other things, the 
firm's relevant expertise and fees, which are anticipated to remain in 
line with market rates for these financial advisory services. The fees 
for these services will be paid by CAT LLC to Anchin.
    It is anticipated that Anchin will provide a variety of services to 
the CAT during the CAT Fee 2026-1 Period, including the following:
    <bullet> Update and maintain internal controls;
    <bullet> Provide cash management and treasury functions;
    <bullet> Facilitate bill payments to vendors;
    <bullet> Facilitate repayments of promissory notes to Participants;
    <bullet> Provide monthly bookkeeping;
    <bullet> Review vendor invoices and documentation in support of 
cash disbursements;
    <bullet> Review documentation to ensure that repayments of 
promissory notes to Participants are in accordance with established 
policies and procedures;
    <bullet> Provide accounting research and consultations on various 
accounting, financial reporting and tax matters;
    <bullet> Address not-for-profit tax and accounting considerations;
    <bullet> Prepare tax returns;
    <bullet> Address various accounting, financial reporting and 
operating inquiries from Participants;
    <bullet> Develop and maintain annual and interim operating and 
financial budgets, including budget to actual and budget to budget 
fluctuation analyses;
    <bullet> Support compliance with the CAT NMS Plan;
    <bullet> Work with and provide support to the Operating Committee, 
Leadership Team and various CAT working groups;
    <bullet> Prepare monthly, quarterly and annual financial 
statements;
    <bullet> Review and reconcile the monthly FINRA CAT reports/
analyses related to billings, collections, outstanding accounts 
receivable and cash account;
    <bullet> Perform certain verification, completeness, and validation 
testing related to the monthly FINRA CAT reports/analyses related to 
billings;
    <bullet> Support the annual financial statement audits by an 
independent auditor;
    <bullet> Review historical costs from inception;
    <bullet> Provide accounting and financial information in support of 
SEC filings; and
    <bullet> Perform additional ad hoc accounting and financial 
advisory services, as requested by CAT LLC.
    CAT LLC estimated the annual budget for the costs for Anchin based 
on historical costs adjusted for cost of living rate increases, and 
projected incremental advisory and support services.
    Accounting Firm: Grant Thornton. It is anticipated that the 
professional and administration costs for the CAT Fee 2026-1 Period 
will include costs related to accounting services performed by Grant 
Thornton. CAT LLC anticipates that it will continue to employ Grant 
Thornton during the CAT Fee 2026-1 Period based on, among other things, 
the firm's relevant expertise and fees, which are anticipated to remain 
in line with market rates for these financial advisory services. It is 
anticipated that Grant Thornton will continue to be engaged as an 
independent accounting firm to complete the audit of CAT LLC's 
financial statements, in accordance with the requirements of the CAT 
NMS Plan. The fees for these services will be paid by CAT LLC to Grant 
Thornton. CAT LLC estimated the budget for the accounting costs for 
Grant Thornton for the CAT Fee 2026-1 Period based on the anticipated 
hourly rates and the anticipated services plus an administrative fee.
    Professional and Administration Cost Estimates. CAT LLC estimates 
that the budget for professional and administration services during the 
CAT Fee 2026-1 Period will be approximately $749,151.\80\ The budget 
for professional and administration services during the CAT Fee 2026-1 
Period is based on the Updated 2026 CAT Budget. CAT LLC estimated the 
budget for the professional and administration costs for the CAT Fee 
2026-1 Period based on a review of past professional and administration 
costs, potential future professional and administration needs, the 
proposed rates and other contractual issues, as well as discussions 
with Anchin and Grant Thornton. This process for estimating the budget 
for the professional and administration costs for the CAT Fee 2026-1 
Period is the same process by which CAT LLC estimated the professional 
and administration costs for the Original 2026 CAT Budget. The Original 
2026 CAT Budget estimated a budget for professional and administration 
costs of $190,916 for January and February 2026, and the actual costs 
for professional and administration services for January and February 
2026, which are set forth in the Updated 2026 Budget, were 
$149,061.\81\ The decrease of $41,855 was due to a lower than expected 
profressional and administration services costs and to the movement of 
bank fees from the professional and administration category to the 
interest income category. Accordingly, CAT LLC believes that the 
process for estimating the budgeted professional and administration 
costs for the CAT Fee 2026-1 Period is reasonable.
---------------------------------------------------------------------------

    \80\ See chart entitled ``Budgeted CAT Costs 2026-1'' in Section 
3(a)(2)(C) above.
    \81\ See chart entitled ``Comparison of Budgeted and Actual 
Costs for January & February 2026'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
the line item for professional and administration costs from the prior 
CAT Fee filing. As this is the first Prospective CAT Fee filing under 
this CAT Funding Model, this filing describes the changes in the 
professional and administration costs from the Original 2026 Budget. 
Specifically, the following describes the differences in the 
professional and administration costs included in the Original 2026 CAT 
Budget versus the Updated 2026 CAT Budget, and the reasons for any 
changes.
    The annual 2026 budgeted professional and administration costs as 
included in the Original 2026 CAT Budget were $1,145,500, and the 
annual 2026 budgeted professional and administration costs included in 
the Updated 2026 CAT Budget are $1,085,500.\82\ Accordingly, the 
budgeted annual costs for professional and administration services 
decreased by $60,000 from the Original 2026 CAT Budget to the Updated 
2026 CAT Budget for the full year of 2026. This budgeted decrease in 
the professional

[[Page 26090]]

and administration costs in the Updated 2026 CAT Budget from the 
Original 2026 Budget was due to the movement of bank fees from the 
professional and administration category to the interest income 
category, and not a change in costs related to Anchin and Grant 
Thornton services.
---------------------------------------------------------------------------

    \82\ See chart entitled ``Comparison of Full Year Budgeted 
Costs'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(x) Public Relations Costs
(a) Description of Public Relations Costs
    Section 11.3(a)(iii)(B)(B)(6) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to provide a brief description of the 
public relations costs set forth in the budget. The Operating Committee 
approved an operating budget for the CAT pursuant to Section 11.1(a) of 
the CAT NMS Plan that included $0 in public relations costs for the CAT 
Fee 2026-1 Period. The public relations costs would represent the fees 
paid to a public relations firm for professional communications 
services to CAT, including media relations consulting, strategy and 
execution. Because CAT LLC anticipates that it will not engage a public 
relations firm for the CAT Fee Period 2026-1, the budget for public 
relations costs for this period is $0.\83\
---------------------------------------------------------------------------

    \83\ See chart entitled ``Budgeted CAT Costs 2026-1'' in Section 
3(a)(2)(C) above.
---------------------------------------------------------------------------

(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
the line item for public relations costs from the prior CAT Fee filing. 
As this is the first Prospective CAT Fee filing under this CAT Funding 
Model, this filing describes the changes in the public relations costs 
from the Original 2026 Budget. Specifically, the following describes 
the differences (if any) in public relations costs included in the 
Original 2026 CAT Budget versus the Updated 2026 CAT Budget, and the 
reasons for any changes.
    The annual budgeted public relations costs for 2026 included in the 
Original 2026 CAT Budget were $0, and the annual budgeted public 
relations costs for 2026 included in the Updated 2026 CAT Budget are 
$0.\84\ Accordingly, the annual budgeted public relations costs for 
2026 are the same for both the Original 2026 CAT Budget and the Updated 
2026 CAT Budget.
---------------------------------------------------------------------------

    \84\ See chart entitled ``Comparison of Full Year Budgeted 
Costs'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(xi) Interest Income
(a) Description of Interest Income
    Section 11.1(a) of the CAT NMS Plan requires the CAT budget to 
include ``the sources of all revenues to cover costs.'' Accordingly, 
the Updated 2026 CAT Budget includes a line item for interest income. 
Specifically, the Operating Committee approved an operating budget for 
the CAT pursuant to Section 11.1(a) of the CAT NMS Plan that included 
$1,453,382 in interest income for the CAT Fee 2026-1 Period.\85\ 
Interest income represents the interest earned on the surplus reserve 
and other funds held by CAT LLC. Such income would be used to reduce 
the amount to be collected to fund the CAT.
---------------------------------------------------------------------------

    \85\ See chart entitled ``Budgeted CAT Costs 2026-1'' in Section 
3(a)(2)(C) above.
---------------------------------------------------------------------------

    CAT LLC estimates the budget for the interest income for the CAT 
Fee 2026-1 Period based on the estimate of the funds held by CAT LLC 
and the expected interest rates on such funds. The Original 2026 CAT 
Budget estimated interest income of $758,343 for January and February 
2026, and the actual interest income for January and February 2026, 
which are included in the Updated 2026 CAT Budget, were $757,527.\86\ 
As mentioned above, bank fees were moved from the professional and 
administration category in the Original 2026 CAT Budget to the interest 
income category in the Updated 2026 CAT Budget. Accordingly, the 
interest income amount for the Updated 2026 CAT Budget was net of 
$10,000 in bank fees. Therefore, the variance between budgeted and 
actual interest income (aside from bank fees) for January and February 
2026 was approximately $10,000. Accordingly, CAT LLC believes that the 
process for estimating the budgeted interest income for the CAT Fee 
2026-1 Period is reasonable.
---------------------------------------------------------------------------

    \86\ See chart entitled ``Comparison of Budgeted and Actual 
Costs for January & February 2026'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
each line item from the prior CAT Fee filing. As this is the first 
Prospective CAT Fee filing under this CAT Funding Model, this filing 
describes the changes in interest income from the Original 2026 CAT 
Budget. Specifically, the following describes the differences in the 
interest income included in the Original 2026 CAT Budget versus the 
Updated 2026 CAT Budget, and the reasons for any changes.
    The annual 2026 budgeted interest income as included in the 
Original 2026 CAT Budget was $1,995,958, and the annual 2026 budgeted 
interest income included in the Updated 2026 CAT Budget is 
$2,806,325.\87\ Accordingly, the budgeted interest income (not 
including bank fees) increased by $810,367 from the Original 2026 CAT 
Budget to the Updated 2026 CAT Budget for the full year of 2026, which 
is an approximate 40% increase in the interest income for the full year 
of 2026. This budgeted increase in the interest income in the Updated 
2026 CAT Budget from the Original 2026 Budget was primarily due to 
higher than expected cash balances being maintained after the approval 
of the Original 2026 Budget.
---------------------------------------------------------------------------

    \87\ See chart entitled ``Comparison of Full Year Budgeted 
Costs'' in Section 3(a)(2)(C) above.
---------------------------------------------------------------------------

(xii) Reserve
(a) Description of Reserve
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to provide a brief description of the 
reserve costs set forth in the budget. The Operating Committee approved 
an operating budget for the CAT pursuant to Section 11.1(a) of the CAT 
NMS Plan that includes a reserve amount for 2026. Section 11.1(a)(i) of 
the CAT NMS Plan states that the budget shall include a reserve. 
Section 11.1(a)(ii) of the CAT NMS Plan further describes the reserve 
as follows:
    For the reserve referenced in paragraph (a)(i) of this Section, the 
budget will include an amount reasonably necessary to allow the Company 
to maintain a reserve of not more than 25% of the annual budget. To the 
extent collected CAT fees exceed CAT costs, including the reserve of 
25% of the annual budget, such surplus shall be used to offset future 
fees. For the avoidance of doubt, the Company will only include an 
amount for the reserve in the annual budget if the Company does not 
have a sufficient reserve (which shall be up to but not more than 25% 
of the annual budget). For the avoidance of doubt, the calculation of 
the amount of the reserve would exclude the amount of the reserve from 
the budget.
    CAT LLC determined to maintain a reserve in the amount of 25% of 
the total expenses set forth in the Updated 2026 CAT Budget (which does 
not include the reserve amount). Accordingly, the total 25% reserve of 
$23,508,157 was calculated by multiplying the total expenses set forth 
in the Updated 2026 CAT Budget (other than the reserve) by 25%.\88\
---------------------------------------------------------------------------

    \88\ The reserve was calculated by multiplying $94,032,626 by 
25%, which equals approximately $23,508,157.
---------------------------------------------------------------------------

    The Updated 2026 CAT Budget estimates that CAT LLC will have 
$102,391,135 in reserve as of the

[[Page 26091]]

beginning of the CAT Fee Period 2026-1. Such reserve is related, in 
part, to (i) the collection of CAT fees in excess of the budgeted CAT 
costs in light of the greater actual executed equivalent share volume 
than the projected executed equivalent share volume for prior CAT Fees, 
and (ii) a reduction in anticipated budgeted costs associated with the 
implementation of certain cost savings measures. This reserve balance 
of $102,391,135 would be used to offset a portion of CAT costs for CAT 
Fee Period 2026-1, thereby reducing the fee rate to be paid for CAT Fee 
2026-1. Specifically, the total costs (including the 25% reserve) for 
CAT Fee 2026-1 of $117,540,783 would be reduced by the $102,391,135 in 
reserve. Therefore, the Total Budgeted CAT Costs 2026-1 would be 
$15,149,648.
    Accordingly, the fee rate for CAT Fee 2026-1 is calculated based on 
this reduced amount of $15,149,648, resulting in a fee rate of 
$0.000001 per executed equivalent share. If the fee rate for CAT Fee 
2026-1 were calculated solely based on the reasonably budgeted costs 
for CAT for May-December 2026, excluding the reduction in that amount 
due to the surplus reserve offset, the fee rate would be the higher 
rate of $0.000010.\89\
---------------------------------------------------------------------------

    \89\ See CAT Fee Alert 2026-1 (Apr. 1, 2026).
---------------------------------------------------------------------------

(b) Changes From Prior Fee Filing
    Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan requires the fee 
filing for a Prospective CAT Fee to describe the reason for changes in 
the line item for a reserve from the prior CAT Fee filing. As this is 
the first Prospective CAT Fee filing under this CAT Funding Model, this 
filing describes the changes in reserve from the Original 2026 CAT 
Budget. Specifically, the following describes the differences in the 
reserve included in the Original 2026 CAT Budget versus the Updated 
2026 CAT Budget, and the reasons for any changes.
    The accrued liquidity reserve balance at the beginning of the year 
included in the Original 2026 CAT Budget was $119,128,336. The Original 
2026 CAT Budget contemplated using the reserve to pay CAT bills 
throughout the year as no CAT fee was in effect. The accrued liquidity 
reserve balance at the beginning of the year included in the Updated 
2026 CAT Budget was $155,403,378. The increase in the accrued liquidity 
reserve balance at the beginning of the year from the Original 2026 CAT 
Budget to the Updated 2026 CAT Budget reflected the additional CAT Fees 
that had been received after the approval of the Original 2026 CAT 
Budget. In addition, the Updated 2026 CAT Budget not only reflected the 
use of the surplus reserve to pay CAT bills but also the accrual of 
additional reserve to establish a 25% reserve through CAT Fee 2026-1. 
Accordingly, the estimated liquidity reserve balance increased from a 
deficit of $37,304,661 included in the Original 2026 CAT Budget to a 
reserve balance of $23,508,157 included in the Updated 2026 CAT Budget 
for the full year of 2026.
(D) Projected Total Executed Equivalent Share Volume
    The calculation of Fee Rate 2026-1 also requires the determination 
of the projected total executed equivalent share volume of transactions 
in Eligible Securities for the CAT Fee 2026-1 Period. Under the CAT NMS 
Plan, the Operating Committee is required to ``reasonably determine the 
projected total executed equivalent share volume of all transactions in 
Eligible Securities for each relevant period based on the executed 
equivalent share volume of all transactions in Eligible Securities for 
the prior twelve months.'' \90\ The Operating Committee is required to 
base its projection on the prior twelve months, but it may use its 
discretion to analyze the likely volume for the upcoming year. Such 
discretion would allow the Operating Committee to use its judgment when 
estimating projected total executed equivalent share volume if the 
volume over the prior twelve months was unusual or otherwise unfit to 
serve as the basis of a future volume estimate.\91\
---------------------------------------------------------------------------

    \90\ Section 11.3(a)(i)(D) of the CAT NMS Plan.
    \91\ CAT Funding Model Approval Order at 13452.
---------------------------------------------------------------------------

    The total executed equivalent share volume of transactions in 
Eligible Securities for the 12-month period from March 2025 through 
February 2026 was 5,980,937,549,360.49 executed equivalent shares. The 
Operating Committee has determined to calculate the projected total 
executed equivalent share volume for the eight-month recovery period 
for CAT Fee 2026-1 by multiplying by 8/12ths the executed equivalent 
share volume for the 12-month period from March 2025 through February 
2026. The Operating Committee determined that such an approach was 
reasonable as the CAT's annual executed equivalent share volume has 
increased from prior years (e.g., the executed equivalent share volume 
for 2024 was 4,295,884,600,069.41), and the Operating Committee 
believes that it is reasonable to conclude that the annual executed 
equivalent share volume will remain at the higher level. Accordingly, 
the projected total executed equivalent share volume for the eight-
month period for CAT Fee 2026-1 is projected to be 3,987,291,699,573.66 
executed equivalent shares.\92\
---------------------------------------------------------------------------

    \92\ This projection was calculated by multiplying 
5,980,937,549,360.49 executed equivalent shares by 8/12ths.
---------------------------------------------------------------------------

    The projected total executed equivalent share volume of all 
transactions in Eligible Securities for the eight-month recovery period 
for CAT Fee 2026-1 and a description of the calculation of the 
projection is provided in this filing in accordance with the 
requirement in the CAT NMS Plan to provide such information in a fee 
filing for a CAT Fee.\93\
---------------------------------------------------------------------------

    \93\ Section 11.3(a)(iii)(B) of the CAT NMS Plan.
---------------------------------------------------------------------------

(E) Fee Rate 2026-1
    Fee Rate 2026-1 would be calculated by dividing the Budgeted CAT 
Costs 2026-1 by the reasonably projected total executed equivalent 
share volume of all transactions in Eligible Securities for the eight-
month recovery period for CAT Fee 2026-1, as described in detail 
above.\94\ Specifically, Fee Rate 2026-1 would be calculated by 
dividing $15,149,648 by 3,987,291,699,573.66 executed equivalent 
shares. As a result, Fee Rate 2026-1 would be $0.000003799483243631228 
per executed equivalent share. Fee Rate 2026-1 is provided in this 
filing in accordance with the requirement in the CAT NMS Plan to 
provide the Fee Rate in a fee filing for a CAT Fee.\95\
---------------------------------------------------------------------------

    \94\ In approving the CAT Funding Model, the Commission stated 
that ``[t]he manner in which the Fee Rate for Prospective CAT Costs 
will be calculated (i.e., by dividing the CAT costs reasonably 
budgeted for the upcoming year by the reasonably projected total 
executed equivalent share volume of all transactions in Eligible 
Securities for the year) is appropriate.'' CAT Funding Model 
Approval Order at 13435.
    \95\ See Section 11.3(a)(iii)(B)(A) of the CAT NMS Plan.
---------------------------------------------------------------------------

    Fee Rate 2026-1 would be used to calculate the fee rate to be paid 
by CEBSs and CEBBs for CAT Fee 2026-1. Such fee rate is calculated by 
multiplying Fee Rate 2026-1 of $0.000003799483243631228 by one-third, 
and rounding the result to six decimal places.\96\ Accordingly, the fee 
rate to be paid by CEBSs and CEBBs for CAT Fee 2026-1 would be 
$0.000001 per executed equivalent share.
---------------------------------------------------------------------------

    \96\ This fee rate of $0.000001 is calculated by multiplying the 
Fee Rate of $0.000003799483243631228 by one-third and rounding this 
result (which equals $0.000001266494414543743) to 6 decimal places.
---------------------------------------------------------------------------

(3) Monthly Fees
    CEBBs and CEBSs would be required to pay fees for CAT Fee 2026-1 on 
a monthly basis for eight months, from July 2026 until January 2027. A 
CEBB's

[[Page 26092]]

or CEBS's fee for each month would be calculated based on the 
transactions in Eligible Securities executed by the CEBB or CEBS from 
the prior month.\97\ Proposed paragraph (a)(vi)(A) of the fee schedule 
would state that each CAT Executing Broker would receive its first 
invoice for CAT Fee 2026-1 in June 2026, and would receive an invoice 
for CAT Fee 2026-1 each month thereafter until January 2027. Proposed 
paragraph (a)(vi)(B) of the fee schedule would state that 
``Consolidated Audit Trail, LLC shall provide each CAT Executing Broker 
with an invoice for CAT Fee 2026-1 on a monthly basis.'' In addition, 
paragraph (b)(1) of the fee schedule states that each CEBB and CEBS is 
required to pay its CAT fees ``each month.''
---------------------------------------------------------------------------

    \97\ See proposed paragraph (a)(vi)(B) of the fee schedule.
---------------------------------------------------------------------------

(4) Consolidated Audit Trail Funding Fees
    To implement CAT Fee 2026-1, the Exchange proposes to add a new 
paragraph to the ``Consolidated Audit Trail Funding Fees'' section of 
the Exchange's fee schedule, to include the proposed paragraphs 
described below.
(A) Fee Schedule for CAT Fee 2026-1
    The CAT NMS Plan states that:
    Each Industry Member that is the CAT Executing Broker for the buyer 
in a transaction in Eligible Securities (``CAT Executing Broker for the 
Buyer'' or ``CEBB'') and each Industry Member that is the CAT Executing 
Broker for the seller in a transaction in Eligible Securities (``CAT 
Executing Broker for the Seller'' or ``CEBS'') will be required to pay 
a CAT Fee for each such transaction in Eligible Securities in the prior 
month based on CAT Data. The CEBB's CAT Fee or CEBS's CAT Fee (as 
applicable) for each transaction in Eligible Securities will be 
calculated by multiplying the number of executed equivalent shares in 
the transaction by one-third and by the Fee Rate reasonably determined 
pursuant to paragraph (a)(i) of this Section 11.3.\98\
---------------------------------------------------------------------------

    \98\ Section 11.3(a)(iii)(A) of the CAT NMS Plan.
---------------------------------------------------------------------------

    Accordingly, based on the factors discussed above, the Exchange 
proposes to add paragraph (a)(vi) to the Consolidated Audit Trail 
Funding Fees section of its fee schedule. Proposed paragraph (a)(vi) 
would state the following:
    (A) Each CAT Executing Broker shall receive its first invoice for 
CAT Fee 2026-1 in June 2026, which shall set forth the CAT Fee 2026-1 
fees calculated based on transactions in May 2026, and shall receive an 
invoice for CAT Fee 2026-1 for each month thereafter until January 
2027.
    (B) Consolidated Audit Trail, LLC shall provide each CAT Executing 
Broker with an invoice for CAT Fee 2026-1 on a monthly basis. Each 
month, such invoices shall set forth a fee for each transaction in 
Eligible Securities executed by the CAT Executing Broker in its 
capacity as a CAT Executing Broker for the Buyer (``CEBB'') and/or the 
CAT Executing Broker for the Seller (``CEBS'') (as applicable) from the 
prior month as set forth in CAT Data. The fee for each such transaction 
will be calculated by multiplying the number of executed equivalent 
shares in the transaction by the fee rate of $0.000001 per executed 
equivalent share.
    (C) Notwithstanding the last invoice date of January 2027 for CAT 
Fee 2026-1 in paragraph (vi)(A), CAT Fee 2026-1 shall continue in 
effect after January 2027, with each CAT Executing Broker receiving an 
invoice for CAT Fee 2026-1 each month, until a new subsequent CAT Fee 
is in effect with regard to Industry Members in accordance with Section 
19(b) of the Exchange Act. Consolidated Audit Trail, LLC will provide 
notice when CAT Fee 2026-1 will no longer be in effect.
    (D) Each CAT Executing Broker shall be required to pay each invoice 
for CAT Fee 2026-1 in accordance with paragraph (b).
    As noted in the Plan amendment for the CAT Funding Model, ``[a]s a 
practical matter, the fee filing would provide the exact fee per 
executed equivalent share to be paid for the CAT Fees, by multiplying 
the Fee Rate by one-third and describing the relevant number of decimal 
places for the fee.'' \99\ Accordingly, proposed paragraph (a)(vi)(B) 
of the fee schedule would set forth a fee rate of $0.000001 per 
executed equivalent share. This fee rate is calculated by multiplying 
Fee Rate 2026-1 of $0.000003799483243631228 by one-third, and rounding 
the result to six decimal places.\100\ The Operating Committee 
determined to use six decimal places to balance the accuracy of the 
calculation with the potential systems and other impracticalities of 
using additional decimal places in the calculation.
---------------------------------------------------------------------------

    \99\ CAT Funding Model Approval Order at 13445, n.677.
    \100\ This fee rate of $0.000001 is calculated by multiplying 
the Fee Rate of $0.000003799483243631228 by one-third, and rounding 
this result (which equals $0.000001266494414543743) to 6 decimal 
places.
---------------------------------------------------------------------------

    The proposed language in paragraph (a)(vi)(A) of the fee schedule 
would describe when CAT Executing Brokers would receive their first 
monthly invoice for CAT Fee 2026-1. Specifically, CAT Executing Brokers 
would receive their first monthly invoice for CAT Fee 2026-1 in June 
2026 and the fees set forth in that invoice would be calculated based 
on transactions executed in May 2026. The payment for the first invoice 
would be required within 30 days after the receipt of the first invoice 
(unless a longer period is indicated), as described in paragraph (b)(2) 
of the fee schedule.
    Proposed paragraph (a)(vi)(A) of the fee schedule also would 
describe the monthly cadence of the invoices for CAT Fee 2026-1. 
Specifically, after the first invoices are provided to CAT Executing 
Brokers in June 2026, invoices will be sent to CAT Executing Brokers 
each month thereafter until January 2027.
    Proposed paragraph (a)(vi)(B) of the fee schedule would describe 
the invoices for CAT Fee 2026-1. Proposed paragraph (a)(vi)(B) of the 
fee schedule would state that ``Consolidated Audit Trail, LLC shall 
provide each CAT Executing Broker with an invoice for CAT Fee 2026-1 on 
a monthly basis.'' Proposed paragraph (a)(vi)(B) of the fee schedule 
also would describe the fees to be set forth in the invoices for CAT 
Fee 2026-1. Specifically, it would state that ``[e]ach month, such 
invoices shall set forth a fee for each transaction in Eligible 
Securities executed by the CAT Executing Broker in its capacity as a 
CAT Executing Broker for the Buyer (`CEBB') and/or the CAT Executing 
Broker for the Seller (`CEBS') (as applicable) from the prior month as 
set forth in CAT Data. The fee for each such transaction will be 
calculated by multiplying the number of executed equivalent shares in 
the transaction by the fee rate of $0.000001 per executed equivalent 
share.''
    Since CAT Fee 2026-1 is a monthly fee based on actual transaction 
volume from the prior month, CAT Fee 2026-1 may collect more or less 
than two-thirds of the Budgeted CAT Costs 2026-1. To the extent that 
CAT Fee 2026-1 collects more than two-thirds of the Budgeted CAT Costs 
2026-1, any excess money collected will be used to offset future fees 
and/or to fund the reserve for the CAT. To the extent that CAT Fee 
2026-1 collects less than two-thirds of the Budgeted CAT Costs 2026-1, 
the budget for the CAT in the ensuing months will reflect such 
shortfall.
    Furthermore, proposed paragraph (a)(vi)(C) of the fee schedule 
would describe how long CAT Fee 2026-1 would remain in effect. It would 
state that ``[n]otwithstanding the last invoice date of January 2027 
for CAT Fee 2026-1 in paragraph (vi)(A), CAT Fee 2026-

[[Page 26093]]

1 shall continue in effect after January 2027, with each CAT Executing 
Broker receiving an invoice for CAT Fee 2026-1 each month, until a new 
subsequent CAT Fee is in effect with regard to Industry Members in 
accordance with Section 19(b) of the Exchange Act. Consolidated Audit 
Trail, LLC will provide notice when CAT Fee 2026-1 will no longer be in 
effect.''
    Finally, proposed paragraph (a)(vi)(D) of the fee schedule would 
set forth the requirement for the CAT Executing Brokers to pay the 
invoices for CAT Fee 2026-1. It would state that ``[e]ach CAT Executing 
Broker shall be required to pay each invoice for CAT Fee 2026-1 in 
accordance with paragraph (b).''
(B) Manner of Payment
    Paragraph (b)(1) of the ``Consolidated Audit Trail Funding Fees'' 
section of the fee schedule describes the manner of payment of Industry 
Member CAT fees. It states that ``[e]ach CAT Executing Broker shall pay 
its CAT fees as required pursuant to paragraph (a) each month to the 
Consolidated Audit Trail, LLC in the manner prescribed by the 
Consolidated Audit Trail, LLC.'' The CAT NMS Plan requires the 
Operating Committee to establish a system for the collection of CAT 
fees.\101\ The Plan Processor has established a billing system for CAT 
fees.\102\ Accordingly, CAT Executing Brokers would be required to pay 
CAT Fee 2026-1 in accordance with such system.
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    \101\ Section 11.4 of the CAT NMS Plan.
    \102\ The billing process and system are described in CAT Alert 
2023-02 as well as in the CAT FAQs related to the billing of CAT 
fees, the Industry Member CAT Reporter Portal User Guide, the FCAT 
Industry Member Onboarding Guide, the FCAT Connectivity Supplement 
for Industry Members and the CAT Billing Webinars (dated Sept. 28, 
2023 and Nov. 7, 2023), each available on the CAT website.
---------------------------------------------------------------------------

(C) Failure To Pay CAT Fees
    The CAT NMS Plan further states that:
    Participants shall require each Industry Member to pay all 
applicable fees authorized under this Article XI within thirty (30) 
days after receipt of an invoice or other notice indicating payment is 
due (unless a longer payment period is otherwise indicated). If an 
Industry Member fails to pay any such fee when due (as determined in 
accordance with the preceding sentence), such Industry Member shall pay 
interest on the outstanding balance from such due date until such fee 
is paid at a per annum rate equal to the lesser of: (a) the Prime Rate 
plus 300 basis points; or (b) the maximum rate permitted by applicable 
law.\103\
---------------------------------------------------------------------------

    \103\ Section 11.4 of the CAT NMS Plan.
---------------------------------------------------------------------------

    Paragraph (b)(2) of the fee schedule states that:
    Each CAT Executing Broker shall pay the CAT fees required pursuant 
to paragraph (a) within thirty days after receipt of an invoice or 
other notice indicating payment is due (unless a longer payment period 
is otherwise indicated). If a CAT Executing Broker fails to pay any 
such CAT fee when due, such CAT Executing Broker shall pay interest on 
the outstanding balance from such due date until such fee is paid at a 
per annum rate equal to the lesser of (i) the Prime Rate plus 300 basis 
points, or (ii) the maximum rate permitted by applicable law.
    The requirements of paragraph (b)(2) would apply to CAT Fee 2026-1.
(5) CAT Fee Details
    The CAT NMS Plan states that:
    Details regarding the calculation of a Participant or CAT Executing 
Broker's CAT Fees will be provided upon request to such Participant or 
CAT Executing Broker. At a minimum, such details would include each 
Participant or CAT Executing Broker's executed equivalent share volume 
and corresponding fee by (1) Listed Options, NMS Stocks and OTC Equity 
Securities, (2) by transactions executed on each exchange and 
transactions executed otherwise than on an exchange, and (3) by buy-
side transactions and sell-side transactions.\104\
---------------------------------------------------------------------------

    \104\ Section 11.3(a)(iv)(A) of the CAT NMS Plan.
---------------------------------------------------------------------------

    Such information would provide CEBBs and CEBSs with the ability to 
understand the details regarding the calculation of their CAT Fee.\105\ 
CAT LLC will provide CAT Executing Brokers with these details regarding 
the calculation of their CAT Fees on their monthly invoice for the CAT 
Fees.
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    \105\ In approving the CAT Funding Model, the Commission stated 
that, ``[i]n the Commission's view, providing CAT Execut[ing] 
Brokers information regarding the calculation of their CAT Fees will 
aid in transparency and permit CAT Execut[ing] Brokers to confirm 
the accuracy of their invoices for CAT Fees.'' CAT Funding Model 
Approval Order at 13454.
---------------------------------------------------------------------------

    In addition, CAT LLC will make certain aggregate statistics 
regarding CAT Fees publicly available. Specifically, the CAT NMS Plan 
states that, ``[f]or each CAT Fee, at a minimum, CAT LLC will make 
publicly available the aggregate executed equivalent share volume and 
corresponding aggregate fee by (1) Listed Options, NMS Stocks and OTC 
Equity Securities, (2) by transactions executed on each exchange and 
transactions executed otherwise than on an exchange, and (3) by buy-
side transactions and sell-side transactions.'' \106\ Such aggregate 
statistics will be available on the CAT website.
---------------------------------------------------------------------------

    \106\ Section 11.3(a)(iv)(B) of the CAT NMS Plan. In approving 
the CAT Funding Model, the Commission stated that ``[t]he 
publication of the aggregate executed equivalent share volume and 
aggregate fee is appropriate because it would allow Participants and 
CAT Executing Brokers a high-level validation of executed volume and 
fees.'' CAT Funding Model Approval Order at 13454.
---------------------------------------------------------------------------

    Furthermore, CAT LLC will make publicly available on the CAT 
website the total amount invoiced each month that CAT Fee 2026-1 is in 
effect as well as the total amount invoiced for CAT Fee 2026-1 for all 
months since its commencement. CAT LLC also will make publicly 
available on the CAT website the total costs to be collected from 
Industry Members for CAT Fee 2026-1.
(6) Financial Accountability Milestones
    The CAT NMS Plan states that ``[n]o Participant will make a filing 
with the SEC pursuant to Section 19(b) of the Exchange Act regarding 
any CAT Fee related to Prospective CAT Costs until the Financial 
Accountability Milestone related to Period 4 described in Section 11.6 
has been satisfied.'' \107\ Under Section 1.1 of the CAT NMS Plan, a 
Financial Accountability Milestone is considered complete as of the 
date identified in the Participants' Quarterly Progress Reports. As 
indicated by the Participants' Quarterly Progress Report for the second 
and third quarter of 2024,\108\ the Financial Accountability Milestone 
related to Period 4 was satisfied on July 15, 2024. In addition, the 
satisfaction of the Financial Accountability Milestone related to 
Period 4 was described in detail in the fee filing for the first 
Prospective CAT Fee, CAT Fee 2024-1.\109\
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    \107\ Section 11.3(a)(iii)(C) of the CAT NMS Plan.
    \108\ Q2 & Q3 2024 Quarterly Progress Report (July 29, 2024).
    \109\ See Securities Exchange Act Rel. No.100827 (August 27, 
2024), 89 FR 71472 (September 3, 2024) (SR-MIAX-2024-33) (Notice of 
Filing and Immediate Effectiveness of Proposed Rule Change To 
Establish Fees for Industry Members Related to Reasonably Budgeted 
Costs of the National Market System Plan Governing the Consolidated 
Audit Trail for the Period From July 16, 2024 Through December 31, 
2024).
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(7) Participant Invoices
    While CAT Fees charged to Industry Members become effective in 
accordance with the requirements of Section 19(b) of the Exchange 
Act,\110\ CAT fees charged to Participants are implemented via an 
approval of the CAT fees by the Operating Committee in accordance with 
the requirements of the

[[Page 26094]]

CAT NMS Plan.\111\ On March 31, 2026, the Operating Committee approved 
the Participant fee related to CAT Fee 2026-1. Specifically, pursuant 
to the requirements of CAT NMS Plan,\112\ each Participant would be 
required to pay a CAT fee calculated using the fee rate of $0.000001 
per executed equivalent share, which is the same fee rate that applies 
to CEBBs and CEBSs. Like CEBBs and CEBSs, each Participant would be 
invoiced such CAT fees on a monthly basis for eight months, from June 
2026 until January 2027, and each Participant's fee for each month 
would be calculated based on the transactions in Eligible Securities 
executed on the applicable exchange (for the Participant exchanges) or 
otherwise than on an exchange (for FINRA) in the prior month. 
Accordingly, each Participant will receive its first invoice in June 
2026, and would receive an invoice each month thereafter until January 
2027. Like with the CAT Fee 2026-1 applicable to CEBBs and CEBSs as 
described in proposed paragraph (a)(vi)(C) of the fee schedule, 
notwithstanding the last invoice date of January 2027, Participants 
will continue to receive invoices for this fee each month until a new 
subsequent CAT Fee is in effect with regard to Industry Members. 
Furthermore, Section 11.4 of the CAT NMS Plan states that each 
Participant is required to pay such invoices as required by Section 
3.7(b) of the CAT NMS Plan. Section 3.7(b) states, in part, that
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    \110\ Section 11.3(a)(i)(A)(I) of the CAT NMS Plan.
    \111\ CAT Funding Model Approval Order at 13448.
    \112\ See Section 11.3(a)(ii) and Appendix B of the CAT NMS 
Plan.

[e]ach Participant shall pay all fees or other amounts required to be 
paid under this Agreement within thirty (30) days after receipt of an 
invoice or other notice indicating payment is due (unless a longer 
payment period is otherwise indicated) (the ``Payment Date''). The 
Participant shall pay interest on the outstanding balance from the 
Payment Date until such fee or amount is paid at a per annum rate equal 
to the lesser of: (i) Prime Rate plus 300 basis points; or (ii) the 
maximum rate permitted by applicable law.
2. Statutory Basis
    The Exchange believes the proposed rule change is consistent with 
the requirements of the Exchange Act. The Exchange believes that the 
proposed rule change is consistent with Section 6(b)(5) of the 
Act,\113\ which requires, among other things, that the Exchange's rules 
must be designed to prevent fraudulent and manipulative acts and 
practices, to promote just and equitable principles of trade, and, in 
general, to protect investors and the public interest, and not designed 
to permit unfair discrimination between customers, issuers, brokers and 
dealers. The Exchange also believes that the proposed rule change is 
consistent with the provisions of Section 6(b)(4) of the Act,\114\ 
because it provides for the equitable allocation of reasonable dues, 
fees and other charges among members and issuers and other persons 
using its facilities and does not unfairly discriminate between 
customers, issuers, brokers or dealers. The Exchange further believes 
that the proposed rule change is consistent with Section 6(b)(8) of the 
Act, which requires that the Exchange's rules not impose any burden on 
competition that is not necessary or appropriate in furtherance of the 
purpose of the Exchange Act. These provisions also require that the 
Exchange be ``so organized and [have] the capacity to be able to carry 
out the purposes'' of the Act and ``to comply, and . . . to enforce 
compliance by its members and persons associated with its members,'' 
with the provisions of the Exchange Act.\115\ Accordingly, a reasonable 
reading of the Act indicates that it intended that regulatory funding 
be sufficient to permit an exchange to fulfill its statutory 
responsibility under the Act, and contemplated that such funding would 
be achieved through equitable assessments on the members, issuers, and 
other users of an exchange's facilities.
---------------------------------------------------------------------------

    \113\ 15 U.S.C. 78f(b)(6).
    \114\ 15 U.S.C. 78f(b)(4).
    \115\ See 15 U.S.C. 78f(b)(1).
---------------------------------------------------------------------------

    The Exchange believes that this proposal is consistent with the Act 
because it implements provisions of the Plan and is designed to assist 
the Exchange in meeting regulatory obligations pursuant to the Plan. In 
approving the Plan, the SEC noted that the Plan ``is necessary and 
appropriate in the public interest, for the protection of investors and 
the maintenance of fair and orderly markets, to remove impediments to, 
and perfect the mechanism of a national market system, or is otherwise 
in furtherance of the purposes of the Act.'' \116\ To the extent that 
this proposal implements the Plan and applies specific requirements to 
Industry Members, the Exchange believes that this proposal furthers the 
objectives of the Plan, as identified by the SEC, and is therefore 
consistent with the Act.
---------------------------------------------------------------------------

    \116\ CAT NMS Plan Approval Order at 84697.
---------------------------------------------------------------------------

    The Exchange believes that the proposed fees to be paid by the 
CEBBs and CEBSs are reasonable, equitably allocated and not unfairly 
discriminatory. First, the CAT Fee 2026-1 fees to be collected are 
directly associated with the budgeted costs of establishing and 
maintaining the CAT, where such costs include Plan Processor costs and 
costs related to technology, legal, consulting, insurance, and 
professional and administration costs.
    The proposed CAT Fee 2026-1 fees would be charged to Industry 
Members in support of the maintenance of a consolidated audit trail for 
regulatory purposes. The proposed fees, therefore, are consistent with 
the Commission's view that regulatory fees be used for regulatory 
purposes and not to support the Exchange's business operations. The 
proposed fees would not cover Exchange services unrelated to the CAT. 
In addition, any surplus would be used as a reserve to offset future 
fees. Given the direct relationship between CAT fees and CAT costs, the 
Exchange believes that the proposed fees are reasonable, equitable and 
not unfairly discriminatory.
    As further discussed below, the SEC approved the CAT Funding Model, 
finding it was reasonable and that it equitably allocates fees among 
Participants and Industry Members. The Exchange believes that the 
proposed fees adopted pursuant to the CAT Funding Model approved by the 
SEC are reasonable, equitably allocated and not unfairly 
discriminatory.
(1) Implementation of CAT Funding Model in CAT NMS Plan
    Section 11.1(b) of the CAT NMS Plan states that ``[t]he 
Participants shall file with the SEC under Section 19(b) of the 
Exchange Act any such fees on Industry Members that the Operating 
Committee approves.'' Per Section 11.1(b) of the CAT NMS Plan, the 
Exchange has filed this fee filing to implement the Industry Member CAT 
fees included in the CAT Funding Model. The Exchange believes that this 
proposal is consistent with the Exchange Act because it is consistent 
with, and implements, the CAT Funding Model in the CAT NMS Plan, and is 
designed to assist the Exchange and its Industry Members in meeting 
regulatory obligations pursuant to the CAT NMS Plan. In approving the 
CAT NMS Plan, the SEC noted that the Plan ``is necessary and 
appropriate in the public interest, for the protection of investors and 
the maintenance of fair and orderly markets, to remove impediments to, 
and perfect the mechanism of a national market system, or is otherwise 
in furtherance of the purposes of the

[[Page 26095]]

Act.'' \117\ Similarly, in approving the CAT Funding Model, the SEC 
concluded that the CAT Funding Model met this standard.\118\ As this 
proposal implements the Plan and the CAT Funding Model described 
therein, and applies specific requirements to Industry Members in 
compliance with the Plan, the Exchange believes that this proposal 
furthers the objectives of the Plan, as identified by the SEC, and is 
therefore consistent with the Exchange Act.
---------------------------------------------------------------------------

    \117\ Id.
    \118\ CAT Funding Model Approval Order at 13481.
---------------------------------------------------------------------------

(2) Calculation of Fee Rate for CAT Fee 2026-1 Is Reasonable
    The SEC has determined that the CAT Funding Model satisfies the 
requirements of the Exchange Act. Specifically, the SEC has concluded 
that the method for determining CAT Fees as set forth in Section 11.3 
of the CAT NMS Plan, including the formula for calculating the Fee 
Rate, the identification of the parties responsible for payment and the 
transactions subject to the fee rate for CAT Fees, satisfies the 
Exchange Act.\119\ In each respect, as discussed above, CAT Fee 2026-1 
is calculated, and would be applied, in accordance with the 
requirements applicable to CAT Fees as set forth in the CAT NMS Plan. 
Furthermore, as discussed below, the Exchange believes that each of the 
figures for the variables in the SEC-approved formula for calculating 
the fee rate for CAT Fee 2026-1 is reasonable and consistent with the 
Exchange Act. The calculation of Fee Rate 2026-1 for CAT Fee 2026-1 
requires the figures for Budgeted CAT Costs 2026-1, the executed 
equivalent share volume for the prior twelve months, the determination 
of the CAT Fee 2026-1 Period, and the projection of the executed 
equivalent share volume for the CAT Fee 2026-1 Period. Each of these 
variables is reasonable and satisfies the Exchange Act, as discussed 
throughout this filing.
---------------------------------------------------------------------------

    \119\ Id.
---------------------------------------------------------------------------

(A) Budgeted CAT Costs 2026-1
    The formula for calculating a Fee Rate requires the amount of 
Budgeted CAT Costs to be recovered. Specifically, Section 
11.3(a)(iii)(B) of the CAT NMS Plan requires a fee filing to provide:

the budget for the upcoming year (or remainder of the year, as 
applicable), including a brief description of each line item in the 
budget, including (1) the technology line items of cloud hosting 
services, operating fees, CAIS operating fees, change request fees, and 
capitalized developed technology costs, (2) legal, (3) consulting, (4) 
insurance, (5) professional and administration, and (6) public 
relations costs, a reserve and/or such other categories as reasonably 
determined by the Operating Committee to be included in the budget, and 
the reason for changes in each such line item from the prior CAT fee 
filing.
    In accordance with this requirement, the Exchange has set forth the 
amount and type of Budgeted CAT Costs 2026-1 for each of these 
categories above.
    Section 11.3(a)(iii)(B) of the CAT NMS Plan also requires that the 
fee filing provide ``sufficient detail to demonstrate that the budget 
for the upcoming year, or part of year, as applicable, is reasonable 
and appropriate.'' As discussed below, the Exchange believes that the 
budget for the CAT Fee 2026-1 Period is ``reasonable and appropriate.'' 
Each of the costs included in CAT Fee 2026-1 is reasonable and 
appropriate because the costs are consistent with standard industry 
practice, based on the need to comply with the requirements of the CAT 
NMS Plan, incurred subject to negotiations performed on an arm's length 
basis, and/or is consistent with the needs of any legal entity, 
particularly one with no employees.
(i) Technology: Cloud Hosting Services
    In approving the CAT Funding Model, the Commission recognized that 
it is appropriate to recover budgeted costs related to cloud hosting 
services as a part of CAT Fees.\120\ CAT LLC determined that the 
budgeted costs related to cloud hosting services described in this 
filing are reasonable and should be included as a part of Budgeted CAT 
Costs 2026-1. As described above, the cloud hosting services costs 
reflect, among other things, the breadth of the CAT cloud activities, 
data volumes far in excess of the original volume estimates, the need 
for specialized cloud services given the volume and unique nature of 
the CAT, the processing time requirements of the Plan, and regular 
efforts to seek to minimize costs where permissible under the Plan. CAT 
LLC determined that use of cloud hosting services is necessary for 
implementation of the CAT, particularly given the substantial data 
volumes associated with the CAT, and that the fees for cloud hosting 
services negotiated by FCAT were reasonable, taking into consideration 
a variety of factors, including the expected volume of data and the 
breadth of services provided and market rates for similar 
services.\121\ Indeed, the actual costs of the CAT are far in excess of 
the original estimated costs of the CAT due to various factors, 
including the higher volumes and greater complexity of the CAT than 
anticipated when Rule 613 was originally adopted.
---------------------------------------------------------------------------

    \120\ Section 11.3(a)(iii)(B)(B)(1) of the CAT NMS Plan.
    \121\ For a discussion of the amount and type of cloud hosting 
services fees, see Section 3(a)(2)(C)(i) above.
---------------------------------------------------------------------------

    To comply with the requirements of the Plan, the breadth of the 
cloud activities related to the CAT is substantial. The cloud services 
not only include the production environment for the CAT, but they also 
include two industry testing environments, support environments for 
quality assurance and stress testing and disaster recovery 
capabilities. Moreover, the cloud storage costs are driven by the 
requirements of the Plan, which requires the storage of multiple 
versions of the data, from the original submitted version of the data 
through various processing steps, to the final version of the data.
    Data volume is a significant driver of costs for cloud hosting 
services. When the Commission adopted the CAT NMS Plan in 2016, it 
estimated that the CAT would need to receive 58 billion records per day 
\122\ and that annual operating costs for the CAT would range from 
$36.5 million to $55 million.\123\ In contrast to the 2016 projections, 
the actual daily Q3 2025 data volumes averaged 792 billion events per 
day.
---------------------------------------------------------------------------

    \122\ Section 1.3 of Appendix D of the CAT NMS Plan at n.262.
    \123\ CAT NMS Plan Approval Order at 84801.
---------------------------------------------------------------------------

    In addition to the effect of the data volume on the cloud hosting 
costs, the processing timelines set forth in the Plan contribute to the 
cloud hosting costs. Although CAT LLC has proactively sought to manage 
cloud hosting costs while complying with the Plan, including through 
requests to the Commission for exemptive relief and amendments to the 
CAT NMS Plan to reduce costs, stringent CAT NMS Plan requirements do 
not allow for any material flexibility in cloud architecture design 
choices, processing timelines (e.g., the use of non-peak processing 
windows), or lower-cost storage tiers. As a result, the required CAT 
processing timelines contribute to the cloud hosting costs of the CAT.
    The costs for cloud hosting services also reflect the need for 
specialized cloud hosting services given the data volume and unique 
processing needs of the CAT. The data volume as well as the data 
processing needs of the CAT necessitate the use of cloud hosting 
services. The equipment, power and services required for an on-premises 
data model, the alternative to cloud

[[Page 26096]]

hosting services, would be cost prohibitive. Moreover, as CAT was being 
developed, there were limited cloud hosting providers that could 
satisfy all the necessary CAT requirements, including the operational 
and security criteria. Over time, more providers offering cloud hosting 
services that would satisfy these criteria have entered the market. CAT 
LLC will continue to evaluate alternative cloud hosting services, 
recognizing that the time and cost to move to an alternative cloud 
provider would be substantial.
    The reasonableness of the cloud hosting services costs is further 
supported by key cost discipline mechanisms for the CAT--a cost-based 
funding structure, cost transparency, cost management efforts 
(including regular efforts to lower compute and storage costs where 
permitted by the Plan) and oversight. Together, these mechanisms help 
ensure the ongoing reasonableness of the CAT's costs and the level of 
fees assessed to support those costs.\124\
---------------------------------------------------------------------------

    \124\ See Securities Exchange Act Rel. No. 97151 (Mar. 15, 
2023), 88 FR 17086, 17117 (Mar. 21, 2023) (describing key cost 
discipline mechanisms for the CAT).
---------------------------------------------------------------------------

(ii) Technology: Operating Fees
    In approving the CAT Funding Model, the SEC recognized that it is 
appropriate to recover budgeted costs related to operating fees as a 
part of CAT Fees.\125\ CAT LLC determined that the budgeted costs 
related to operating fees described in this filing are reasonable and 
should be included as a part of Budgeted CAT Costs 2026-1.
---------------------------------------------------------------------------

    \125\ Section 11.3(a)(iii)(B)(B)(1) of the CAT NMS Plan.
---------------------------------------------------------------------------

    The operating fees would include the negotiated fees paid by CAT 
LLC to the Plan Processor to operate and maintain the system for order-
related information and to perform business operations related to the 
system, including compliance, security, testing, training, 
communications with the industry (e.g., management of the FINRA CAT 
Helpdesk, FAQs, website and webinars) and program management. CAT LLC 
determined that the selection of FCAT as the Plan Processor was 
reasonable and appropriate given its expertise with securities 
regulatory reporting, after a process of considering other potential 
candidates.\126\ CAT LLC also determined that the fixed price contract, 
negotiated on an arm's length basis with the goals of managing costs 
and receiving services required to comply with the CAT NMS Plan and 
Rule 613, was reasonable and appropriate, taking into consideration a 
variety of factors, including the breadth of services provided and 
market rates for similar types of activity.\127\ The services to be 
performed by FCAT for CAT Fee 2026-1 Period and the budgeted costs 
related to such services are described above.\128\
---------------------------------------------------------------------------

    \126\ See Section 3(a)(2)(C)(ii) above.
    \127\ Id.
    \128\ Id.
---------------------------------------------------------------------------

    The operating costs also include costs related to the receipt of 
market data. CAT LLC anticipates receiving certain market data from 
Algoseek during the CAT Fee 2026-1 Period. CAT LLC anticipates that 
Algoseek will provide data as set forth in the SIP Data requirements of 
the CAT NMS Plan and that the fees are reasonable and in line with 
market rates for market data received.\129\
---------------------------------------------------------------------------

    \129\ Id.
---------------------------------------------------------------------------

(iii) Technology: CAIS Operating Fees
    In approving the CAT Funding Model, the SEC recognized that it is 
appropriate to recover budgeted costs related to CAIS operating fees as 
a part of CAT Fees.\130\ CAT LLC determined that the budgeted costs 
related to CAIS operating fees described in this filing are reasonable 
and should be included as a part of the Budgeted CAT Costs 2026-1. The 
CAIS operating fees would include the fees paid to the Plan Processor 
to operate and maintain the Reference Database and to perform the 
business operations related to the system, including compliance, 
security, testing, training, communications with the industry (e.g., 
management of the FINRA CAT Helpdesk, FAQs, website and webinars) and 
program management. CAT LLC determined that the fees for FCAT's 
services related to the Reference Database, negotiated on an arm's 
length basis with the goals of managing costs and receiving services 
required to comply with the CAT NMS Plan, taking into consideration a 
variety of factors, including the services to be provided and market 
rates for similar types of activity, are reasonable and 
appropriate.\131\ The services to be performed by FCAT for the CAT Fee 
2026-1 Period and the budgeted costs for such services are described 
above.\132\
---------------------------------------------------------------------------

    \130\ Section 11.3(a)(iii)(B)(B)(1) of the CAT NMS Plan.
    \131\ See Section 3(a)(2)(C)(iii) above.
    \132\ Id.
---------------------------------------------------------------------------

(iv) Technology: Change Request Fees
    In approving the CAT Funding Model, the SEC recognized that it is 
appropriate to recover budgeted costs related to change request fees as 
a part of CAT Fees.\133\ CAT LLC determined that the budgeted costs 
related to change request fees described in this filing are reasonable 
and should be included as a part of the Budgeted CAT Costs 2026-1. It 
is common practice to utilize a change request process to address 
evolving needs in technology projects. This is particularly true for a 
project like CAT that is the first of its kind, both in substance and 
in scale. The substance and costs of each of the change requests are 
evaluated by the Operating Committee and approved in accordance with 
the requirements for Operating Committee meetings. In each case, CAT 
LLC forecasts that the change requests will be necessary to implement 
the CAT. As described above,\134\ CAT LLC determined that it was 
reasonable not to include any change request fees in the Budgeted CAT 
Costs 2026-1.
---------------------------------------------------------------------------

    \133\ Section 11.3(a)(iii)(B)(B)(1) of the CAT NMS Plan.
    \134\ See Section 3(a)(2)(C)(iv) above.
---------------------------------------------------------------------------

(v) Capitalized Developed Technology Costs
    In approving the CAT Funding Model, the SEC recognized that it is 
appropriate to recover budgeted costs related to capitalized developed 
technology costs as a part of CAT Fees.\135\ In general, capitalized 
developed technology costs would include costs related to, for example, 
certain development costs, costs related to certain modifications, 
upgrades and other changes to the CAT and license fees. The amount and 
type of budgeted capitalized developed technology costs for the CAT Fee 
2026-1 Period, which relate to the software license fee and technology 
changes to be implemented by FCAT, are described in more detail 
above.\136\
---------------------------------------------------------------------------

    \135\ Section 11.3(a)(iii)(B)(B)(1) of the CAT NMS Plan.
    \136\ See Section 3(a)(2)(C)(v) above.
---------------------------------------------------------------------------

(vi) Legal
    In approving the CAT Funding Model, the SEC recognized that it is 
appropriate to recover budgeted costs related to legal fees as a part 
of CAT Fees.\137\ CAT LLC determined that the budgeted legal costs 
described in this filing are reasonable and should be included as a 
part of the Budgeted CAT Costs 2026-1. Given the unique nature of the 
CAT, the number of parties involved with the CAT (including, for 
example, the SEC, Participants, Industry Members, and vendors) and the 
many regulatory, contractual and other issues associated with the CAT, 
the scope of the necessary legal services is substantial. CAT LLC 
determined that the scope of the proposed legal services is necessary 
to implement and maintain the CAT and that the legal rates reflect the 
specialized services necessary for such

[[Page 26097]]

a project. CAT LLC determined to hire and continue to use each law firm 
based on a variety of factors, including their relevant expertise and 
fees. In each case, CAT LLC determined that the fee rates were in line 
with market rates for specialized legal expertise. In addition, CAT LLC 
determined that the budgeted costs for the legal projects were 
appropriate given the breadth of the services provided. The services to 
be performed by each law firm for the CAT Fee 2026-1 Period and the 
budgeted costs related to such services are described above.\138\
---------------------------------------------------------------------------

    \137\ Section 11.3(a)(iii)(B)(B)(2) of the CAT NMS Plan.
    \138\ See Section 3(a)(2)(C)(vi) above.
---------------------------------------------------------------------------

(vii) Consulting
    In approving the CAT Funding Model, the SEC recognized that it is 
appropriate to recover budgeted consulting costs as a part of CAT 
Fees.\139\ CAT LLC determined that the budgeted consulting costs 
described in this filing are reasonable and should be included as a 
part of Budgeted CAT Costs 2026-1. Because there are no CAT employees 
\140\ and because of the significant number of issues associated with 
the CAT, the consultants are budgeted to provide assistance in the 
management of various CAT matters and the processes related to such 
matters.\141\ CAT LLC determined the budgeted consulting costs were 
appropriate, as the consulting services were to be provided at 
reasonable market rates that were comparable to the rates charged by 
other consulting firms for similar work. Moreover, the total budgeted 
costs for such consulting services were appropriate in light of the 
breadth of services provided by Deloitte. The services budgeted to be 
performed by Deloitte and the budgeted costs related to such services 
are described above.\142\
---------------------------------------------------------------------------

    \139\ Section 11.3(a)(iii)(B)(B)(3) of the CAT NMS Plan.
    \140\ As stated in the filing of the proposed CAT NMS Plan, 
``[i]t is the intent of the Participants that the Company have no 
employees.'' Securities Exchange Act Rel. No. 77724 (Apr. 27, 2016), 
81 FR 30614, 30621 (May 17, 2016).
    \141\ CAT LLC uses certain third parties to perform tasks that 
may be performed by administrators for other NMS Plans. See, e.g., 
CTA Plan and CQ Plan.
    \142\ Section 3(a)(2)(C)(vii) above.
---------------------------------------------------------------------------

(viii) Insurance
    In approving the CAT Funding Model, the SEC recognized that it is 
appropriate to recover budgeted insurance costs as a part of CAT 
Fees.\143\ CAT LLC determined that the budgeted insurance costs 
described in this filing are reasonable and should be included as a 
part of the Budgeted CAT Costs 2026-1. CAT LLC determined that it is 
common practice to have directors' and officers' liability insurance, 
and errors and omissions liability insurance. CAT LLC further 
determined that it was important to have cyber security insurance given 
the nature of the CAT, and such a decision is consistent with the CAT 
NMS Plan, which states that the cyber incident response plan may 
include ``[i]nsurance against security breaches.'' \144\ As discussed 
above,\145\ CAT LLC determined that the budgeted insurance costs were 
appropriate given its prior experience with this market and an analysis 
of the alternative insurance offerings. Based on this analysis, CAT LLC 
determined that the selected insurance policies provided appropriate 
coverage at reasonable market rates.\146\
---------------------------------------------------------------------------

    \143\ Section 11.3(a)(iii)(B)(B)(4) of the CAT NMS Plan.
    \144\ Section 4.1.5 of Appendix D of the CAT NMS Plan.
    \145\ See Section 3(a)(2)(C)(viii) above.
    \146\ Id.
---------------------------------------------------------------------------

(ix) Professional and Administration
    In approving the CAT Funding Model, the SEC recognized that it is 
appropriate to recover budgeted professional and administration costs 
as a part of CAT Fees.\147\ CAT LLC determined that the budgeted 
professional and administration costs described in this filing are 
reasonable and should be included as a part of Budgeted CAT Costs 2026-
1. Because there are no CAT employees, all required accounting, 
financial, tax, cash management and treasury functions for CAT LLC have 
been outsourced at market rates. In addition, the required annual 
financial statement audit of CAT LLC is included in professional and 
administration costs, which costs are also at market rates. The 
services performed by Anchin and Grant Thornton and the costs related 
to such services are described above.\148\
---------------------------------------------------------------------------

    \147\ Section 11.3(a)(iii)(B)(B)(5) of the CAT NMS Plan.
    \148\ See Section 3(a)(2)(C)(ix) above.
---------------------------------------------------------------------------

    CAT LLC anticipates continuing to make use of Anchin, a financial 
advisory firm, to assist with financial matters for the CAT. CAT LLC 
determined that the budgeted costs for Anchin were appropriate, as the 
financial advisory services were to be provided at reasonable market 
rates that were comparable to the rates charged by other such firms for 
similar work. Moreover, the total budgeted costs for such financial 
advisory services were appropriate in light of the breadth of services 
provided by Anchin. The services budgeted to be performed by Anchin and 
the budgeted costs related to such services are described above.\149\
---------------------------------------------------------------------------

    \149\ Id.
---------------------------------------------------------------------------

    CAT LLC anticipates continuing to make use of Grant Thornton, an 
independent accounting firm, to complete the audit of CAT LLC's 
financial statements, in accordance with the requirements of the CAT 
NMS Plan. CAT LLC determined that the budgeted costs for Grant Thornton 
were appropriate, as the accounting services were to be provided at 
reasonable market rates that were comparable to the rates charged by 
other such firms for similar work. Moreover, the total budgeted costs 
for such accounting services were appropriate in light of the breadth 
of services provided by Grant Thornton. The services budgeted to be 
performed by Grant Thornton and the budgeted costs related to such 
services are described above.\150\
---------------------------------------------------------------------------

    \150\ Id.
---------------------------------------------------------------------------

(x) Public Relations Costs
    In approving the CAT Funding Model, the SEC recognized that it is 
appropriate to recover budgeted public relations costs as a part of CAT 
Fees.\151\ However, as described above,\152\ CAT LLC determined not to 
include any public relations costs in Budgeted CAT Costs 2026-1. CAT 
LLC determined that it was reasonable not to include any public 
relations costs in the Budgeted CAT Costs 2026-1.
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    \151\ Section 11.3(a)(iii)(B)(B)(6) of the CAT NMS Plan.
    \152\ See Section 3(a)(2)(C)(x) above.
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(xi) Interest Income
    Section 11.1(a) of the CAT NMS Plan requires the CAT budget to 
include ``the sources of all revenues to cover costs.'' Accordingly, 
the Updated 2026 CAT Budget includes a line item for interest income. 
Specifically, the Updated 2026 CAT Budget includes $1,453,382 in 
interest income for the CAT Fee 2026-1 Period.\153\ CAT LLC determined 
that using interest income to reduce the amount to be collected via CAT 
Fees is reasonable and should be included as a part of the Budgeted CAT 
Costs 2026-1.
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    \153\ See chart entitled ``Budgeted CAT Costs 2026-1'' in 
Section 3(a)(2)(C) above.
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(xii) Reserve
    In approving the CAT Funding Model, the SEC recognized that it is 
appropriate to recover budgeted reserve costs as a part of CAT 
Fees.\154\ CAT LLC determined that the reserve in the amount of 25% of 
the Updated 2026 CAT Budget (other than the reserve) complies with the 
requirements of the CAT NMS Plan related to a reserve, is a reasonable 
amount, and, therefore,

[[Page 26098]]

should be included as a part of the Updated 2026 CAT Budget.
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    \154\ Section 11.3(a)(iii)(B)(B) of the CAT NMS Plan.
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    In its approval order for the CAT Funding Model, the Commission 
stated that it would be appropriate for the annual operating budget for 
the CAT to ``include a reserve of not more than 25% of the annual 
budget.'' \155\ In making this statement, the Commission noted the 
following:
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    \155\ CAT Funding Model Approval Order at 13444.
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    Because the CAT is a critical regulatory tool/system, the CAT needs 
to have a stable funding source to build financial stability to support 
the Company as a going concern. Funding for the CAT, as noted in 
Section 11.1(b), is the responsibility of the Participants and the 
industry. Because CAT fees are charged based on the budget, which is 
based on anticipated volume, it is appropriate to have a reserve on 
hand to prevent a shortfall in the event there is an unexpectedly high 
volume in a given year. A reserve would help to assure that the CAT has 
sufficient resources to cover costs should there be unanticipated costs 
or costs that are higher than expected.\156\
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    \156\ Id.
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    The SEC also recognized that a reserve would help address the 
difficulty in predicting certain variable CAT costs, like trading 
volume.\157\ The SEC also recognized that CAT fees will be collected 
approximately three months after trading activity on which a CAT fee is 
based, or 25% of the year, and that the reserve would be available to 
address funding needs related to this three-month delay.\158\ The 
inclusion of the proposed reserve in the Updated 2026 CAT Budget would 
provide each of these benefits to the CAT. The reserve is discussed 
further above.\159\
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    \157\ Id.
    \158\ Id.
    \159\ See Section 3(a)(2)(C)(xii) above.
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    As discussed further below,\160\ however, a surplus reserve balance 
in excess of the budgeted 25% reserve has been collected as of the 
beginning of the year of 2026. Accordingly, the Updated 2026 CAT Budget 
indicates that this surplus would be used to offset a portion of CAT 
costs for the CAT Fee 2026-1 Period, thereby reducing the fee rate for 
CAT Fee 2026-1 ($0.000001 per executed equivalent share). If the fee 
rate for CAT Fee 2026-1 were calculated solely based on the reasonably 
budgeted costs for CAT for May-December 2026, excluding the reduction 
in that amount due to the surplus reserve offset, the fee rate would be 
$0.000010 per executed equivalent share.
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    \160\ See Section 3(b)(2)(B) below.
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(B) Reconciliation of Budget to the Collected Fees
    The CAT NMS Plan also requires fee filings for Prospective CAT Fees 
to include ``a discussion of how the budget is reconciled to the 
collected fees.'' \161\ As discussed above,\162\ this reserve balance 
of $102,391,135 collected via prior CAT Fees would be used to offset a 
portion of CAT costs for CAT Fee Period 2026-1, thereby reducing the 
fee rate to be paid for CAT Fee 2026-1. Specifically, the total costs 
(including the 25% reserve) for CAT Fee 2026-1 of $117,540,783 would be 
reduced by the $102,391,135 in reserve. Therefore, the Total Budgeted 
CAT Costs 2026-1 would be $15,149,648. Such surplus reserve balance 
would be used to reduce the fee rate for CAT Fee 2026-1 ($0.000001 per 
executed equivalent share).
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    \161\ Section 11.3(a)(iii)(B)(C) of the CAT NMS Plan.
    \162\ See Section 3(a)(2)(C)(xii) above.
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(C) Total Executed Equivalent Share Volume for the Prior 12 Months
    The total executed equivalent share volume of transactions in 
Eligible Securities for the period from March 2025 through February 
2026 was 5,980,937,549,360.49 executed equivalent shares. CAT LLC 
determined the total executed equivalent share volume for the prior 
twelve months by counting executed equivalent shares in the same manner 
as it counts executed equivalent shares for CAT billing purposes.\163\
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    \163\ See Section 3(a)(2)(D) above.
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(D) Projected Executed Equivalent Share Volume for the CAT Fee 2026-1 
Period
    CAT LLC has determined that the projected total executed equivalent 
share volume for the eight months of the CAT Fee 2026-1 Period by 
multiplying by 8/12ths the executed equivalent share volume for the 
prior twelve months: 8/12 times 5,980,937,549,360.49 executed 
equivalent shares.\164\ The Operating Committee determined that such an 
approach was reasonable as the CAT's annual executed equivalent share 
volume has increased from prior years (e.g., the executed equivalent 
share volume for 2024 was 4,295,884,600,069.41), and the Operating 
Committee believes that it is reasonable to conclude that the annual 
executed equivalent share volume will remain at the higher level.
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    \164\ Id.
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(E) Actual Fee Rate for CAT Fee 2026-1
(i) Decimal Places
    As noted in the approval order for the CAT Funding Model, as a 
practical matter, the fee filing for a CAT Fee would provide the exact 
fee per executed equivalent share to be paid for each CAT Fee, by 
multiplying the Fee Rate by one-third and describing the relevant 
number of decimal places for the fee rate.\165\ Accordingly, proposed 
paragraph (a)(vi)(B) of the fee schedule would set forth a fee rate of 
$0.000001 per executed equivalent share. This fee rate is calculated by 
multiplying Fee Rate 2026-1 by one-third and rounding the result to six 
decimal places. CAT LLC determined that the use of six decimal places 
is reasonable as it balances the accuracy of the calculation with the 
potential systems and other impracticalities of using additional 
decimal places in the calculation.\166\
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    \165\ CAT Funding Model Approval Order at 13445, n.677.
    \166\ See Section 3(a)(5)(A) above.
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(ii) Reasonable Fee Level
    The Exchange believes that charging CAT Fee 2026-1 with a fee rate 
of $0.000001 per executed equivalent share is reasonable because it 
provides for a revenue stream for the Company that is aligned with the 
Budgeted CAT Costs 2026-1. Moreover, the Exchange believes that the 
level of the fee rate is reasonable, as it is less than CAT Fee 2025-2 
and is comparable to other transaction-based fees, including fees 
assessed pursuant to Section 31.\167\ As a result, the magnitude of CAT 
Fee 2026-1 is small, and therefore will mitigate any potential adverse 
economic effects or inefficiencies.\168\
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    \167\ For example, as the SEC noted in the CAT Funding Model 
Approval Order, recent Section 31 fees ranged from $0.00007 per 
share to $0.00072 per share. CAT Funding Model Approval Order at 
13469.
    \168\ Id.
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(3) CAT Fee 2026-1 Provides for an Equitable Allocation of Fees
    CAT Fee 2026-1 provides for an equitable allocation of fees, as it 
equitably allocates CAT costs between and among the Participants and 
Industry Members. The SEC approved the CAT Funding Model, finding that 
each aspect of the CAT Funding Model satisfied the requirements of the 
Exchange Act, including the formula for calculating CAT Fees as well as 
the Industry Members to be charged the CAT Fees.\169\ In approving the 
CAT Funding Model, the SEC stated that ``[t]he Participants have 
sufficiently

[[Page 26099]]

demonstrated that the proposed allocation of fees is appropriate and 
meets the Rule 608(b) approval standard.'' \170\ Accordingly, the CAT 
Funding Model sets forth the requirements for allocating fees related 
to Budgeted CAT Costs among Participants and Industry Members, and the 
fee filings for CAT Fees must comply with those requirements.
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    \169\ See Section 11.3(a) of the CAT NMS Plan.
    \170\ CAT Funding Model Approval Order at 13412.
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    CAT Fee 2026-1 provides for an equitable allocation of fees as it 
complies with the requirements regarding the calculation of CAT Fees as 
set forth in the CAT NMS Plan. For example, as described above, the 
calculation of CAT Fee 2026-1 complies with the formula set forth in 
Section 11.3(a) of the CAT NMS Plan. In addition, CAT Fee 2026-1 would 
be charged to CEBBs and CEBSs in accordance with Section 11.3(a) of the 
CAT NMS Plan. Furthermore, the Participants would be charged for their 
designated share of the Budgeted CAT Costs 2026-1 through a fee 
implemented via the CAT NMS Plan, which would have the same fee rate as 
CAT Fee 2026-1.
    In addition, as discussed above, each of the inputs into the 
calculation of CAT Fee 2026-1--the Budgeted CAT Costs 2026-1, the count 
for the executed equivalent share volume for the prior 12 months, and 
the projected executed equivalent share volume for the CAT Fee 2026-1 
Period--is reasonable. Moreover, these inputs lead to a reasonable fee 
rate for CAT Fee 2026-1 that is lower than other fee rates for 
transaction-based fees. A reasonable fee rate allocated in accordance 
with the requirements of the CAT Funding Model provides for an 
equitable allocation of fees.
(4) CAT Fee 2026-1 Is Not Unfairly Discriminatory
    CAT Fee 2026-1 is not an unfairly discriminatory fee. The SEC 
approved the CAT Funding Model, finding that each aspect of the CAT 
Funding Model satisfies the requirements of the Exchange Act. In 
reaching this conclusion, the SEC analyzed the potential effect of CAT 
Fees calculated pursuant to the CAT Funding Model on affected 
categories of market participants, including Participants (including 
exchanges and FINRA), Industry Members (including subcategories of 
Industry Members, such as alternative trading systems, CAT Executing 
Brokers and market makers), and investors generally, and considered 
market effects related to equities and options, among other things. CAT 
Fee 2026-1 complies with the requirements regarding the calculation of 
CAT Fees as set forth in the CAT NMS Plan. In addition, as discussed 
above, each of the inputs into the calculation of CAT Fee 2026-1 and 
the resulting fee rate for CAT Fee 2026-1 is reasonable. Therefore, CAT 
Fee 2026-1 does not impose an unfairly discriminatory fee on Industry 
Members.
    The Exchange believes the proposed fees established pursuant to the 
CAT Funding Model promote just and equitable principles of trade, and, 
in general, protect investors and the public interest, and are provided 
in a transparent manner and with specificity in the fee schedule. The 
Exchange also believes that the proposed fees are reasonable because 
they would provide ease of calculation, ease of billing and other 
administrative functions, and predictability of a fee based on fixed 
rate per executed equivalent share. Such factors are crucial to 
estimating a reliable revenue stream for CAT LLC and for permitting 
Exchange members to reasonably predict their payment obligations for 
budgeting purposes.

B. Self-Regulatory Organization's Statement on Burden on Competition

    Section 6(b)(8) of the Act \171\ requires that the Exchange's rules 
not impose any burden on competition that is not necessary or 
appropriate in furtherance of the purpose of the Exchange Act. The 
Exchange does not believe that the proposed rule change will result in 
any burden on competition that is not necessary or appropriate in 
furtherance of the purposes of the Act. The Exchange notes that CAT Fee 
2026-1 implements provisions of the CAT NMS Plan that were approved by 
the Commission and is designed to assist the Exchange in meeting its 
regulatory obligations pursuant to the Plan.
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    \171\ 15 U.S.C. 78f(b)(8).
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    In addition, all Participants (including exchanges and FINRA) are 
proposing to introduce CAT Fee 2026-1 on behalf of CAT LLC to implement 
the requirements of the CAT NMS Plan. Therefore, this is not a 
competitive fee filing, and, therefore, it does not raise competition 
issues between and among the Participants.
    Furthermore, in approving the CAT Funding Model, the SEC analyzed 
the potential competitive impact of the CAT Funding Model, including 
competitive issues related to market services, trading services and 
regulatory services, efficiency concerns, and capital formation.\172\ 
The SEC also analyzed the potential effect of CAT fees calculated 
pursuant to the CAT Funding Model on affected categories of market 
participants, including Participants (including exchanges and FINRA), 
Industry Members (including subcategories of Industry Members, such as 
alternative trading systems, CAT Executing Brokers and market makers), 
and investors generally, and considered market effects related to 
equities and options, among other things. Based on this analysis, the 
SEC approved the CAT Funding Model as compliant with the Exchange Act. 
CAT Fee 2026-1 is calculated and implemented in accordance with the CAT 
Funding Model as approved by the SEC.
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    \172\ CAT Funding Model Approval Order at 13457-81.
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    As discussed above, each of the inputs into the calculation of CAT 
Fee 2026-1 is reasonable and the resulting fee rate for CAT Fee 2026-1 
calculated in accordance with the CAT Funding Model is reasonable. 
Therefore, CAT Fee 2026-1 would not impose any burden on competition 
that is not necessary or appropriate in furtherance of the purpose of 
the Exchange Act.

C. Self-Regulatory Organization's Statement on Comments on the Proposed 
Rule Change Received From Members, Participants, or Others

    Written comments were neither solicited nor received.

III. Date of Effectiveness of the Proposed Rule Change and Timing for 
Commission Action

    The foregoing rule change has become effective pursuant to Section 
19(b)(3)(A)(ii) of the Act,\173\ and Rule 19b-4(f)(2) \174\ thereunder. 
At any time within 60 days of the filing of the proposed rule change, 
the Commission summarily may temporarily suspend such rule change if it 
appears to the Commission that such action is necessary or appropriate 
in the public interest, for the protection of investors, or otherwise 
in furtherance of the purposes of the Act. If the Commission takes such 
action, the Commission shall institute proceedings to determine whether 
the proposed rule should be approved or disapproved.
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    \173\ 15 U.S.C. 78s(b)(3)(A)(ii).
    \174\ 17 CFR 240.19b-4(f)(2).
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IV. Solicitation of Comments

    Interested persons are invited to submit written data, views, and 
arguments concerning the foregoing, including whether the proposed rule 
change is consistent with the Act. Comments may be submitted by any of 
the following methods:

[[Page 26100]]

Electronic Comments

    <bullet> Use the Commission's internet comment form (<a href="https://www.sec.gov/rules/sro.shtml">https://www.sec.gov/rules/sro.shtml</a>); or
    <bullet> Send an email to <a href="/cdn-cgi/l/email-protection#e496918881c9878b8989818a9097a4978187ca838b92"><span class="__cf_email__" data-cfemail="7604031a135b15191b1b131802053605131558111900">[email&#160;protected]</span></a>. Please include 
file number SR-MIAX-2026-17 on the subject line.

Paper Comments

    <bullet> Send paper comments in triplicate to Secretary, Securities 
and Exchange Commission, 100 F Street NE, Washington, DC 20549-1090.

All submissions should refer to file number SR-MIAX-2026-17. This file 
number should be included on the subject line if email is used. To help 
the Commission process and review your comments more efficiently, 
please use only one method. The Commission will post all comments on 
the Commission's internet website (<a href="https://www.sec.gov/rules/sro.shtml">https://www.sec.gov/rules/sro.shtml</a>). Copies of the filing will be available for inspection and 
copying at the principal office of the Exchange. Do not include 
personal identifiable information in submissions; you should submit 
only information that you wish to make available publicly. We may 
redact in part or withhold entirely from publication submitted material 
that is obscene or subject to copyright protection. All submissions 
should refer to file number SR-MIAX-2026-17 and should be submitted on 
or before June 2, 2026.

    For the Commission, by the Division of Trading and Markets, 
pursuant to delegated authority.\175\
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    \175\ 17 CFR 200.30-3(a)(12).
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Stephanie J. Fouse,
Assistant Secretary.
[FR Doc. 2026-09344 Filed 5-11-26; 8:45 am]
BILLING CODE 8011-01-P


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