# M&CO. SECURITIES LLC X-17A-5 (2026-03-02) — Broker-dealer annual report

- Company: M&CO. SECURITIES LLC
- Form: X-17A-5
- Filed: 2026-03-02
- Period: 2025-12-31
- Accession: 0002029832-26-000002
- CIK: 2029832
- File #: 8-71260
- Type: Broker-dealer
- Material weakness: No
- Auditor: Weaver and Tidwell, LLP
- Auditor location: Houston, TX
- Contact: Richard Zack
- Phone: 945-293-6405
- Email: rzack@mackco.com
- Website: mackco.com
- Signed by: Richard Zack (CEO/FINOP)

Original filing: https://www.sec.gov/Archives/edgar/data/2029832/000202983226000002/mcoauditshort2512.pdf

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| UNITED STATES                      |
|------------------------------------|
| SECURITIES AND EXCHANGE COMMISSION |
| Washington, D.C. 20549             |

# ANNUAL REPORTS FORM X-17A-5 .......

| OMB APPROVAL             |  |  |
|--------------------------|--|--|
| OMB Number: 3235-0123    |  |  |
| Expires: Nov. 30, 2026   |  |  |
| Estimated average burden |  |  |
| hours per response: 12   |  |  |
| SEC FILE NUMBER          |  |  |

8-71260

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| TYPE OF REGISTRANT (check all applicable boxes):<br>Broker-dealer<br>Check here if respondent is also an OTC derivatives dealer |                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |
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| (No. and Street)                                                                                                                |                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |
| PA                                                                                                                              |                                                                                             | 18938                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |  |
| (State)                                                                                                                         |                                                                                             | (Zip Code)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |  |
| PERSON TO CONTACT WITH REGARD TO THIS FILING                                                                                    |                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |
| 945-293-6405                                                                                                                    |                                                                                             | rzack@mackco.com                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |  |
|                                                                                                                                 |                                                                                             | (Email Address)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |
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| Weaver and Tidwell, LLP                                                                                                         |                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |
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|                                                                                                                                 |                                                                                             | 77027                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |  |
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| (Date of Registration with PCAOB)(if applicable)                                                                                |                                                                                             | (PCAOB Registration Number, if applicable)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |  |
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|                                                                                                                                 | MM/DD/YY<br>NAME OF FIRM: M&CO. Securities LLC<br>4400 Post Oak Parkway, Suite 1100 Houston | Information Required Pursuant to Rules 17a-5, 17a-12, and 18a-7 under the Securities Exchange Act of 1934<br>FILING FOR THE PERIOD BEGINNING 06/19/2024 AND ENDING 12/31/2025<br>A. REGISTRANT IDENTIFICATION<br>Major security-based swap participant<br>ADDRESS OF PRINCIPAL PLACE OF BUSINESS: (Do not use a P.O. box no.)<br>(Area Code - Telephone Number)<br>B. ACCOUNTANT IDENTIFICATION<br>INDEPENDENT PUBLIC ACCOUNTANT whose reports are contained in this filing*<br>(Name - if individual, state last, first, and middle name)<br>IX<br>410<br>FOR OFFICIAL USE ONLY |  |

accountant must be supported by a statement of facts and circumstances relied on as the basis of the exemption. See 17 CFR 240.17a-5(e)(1)(ii), if applicable.

Persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

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#### OATH OR AFFIRMATION

| I Richard Zack                                                  | swear (or affirm) that, to the best of my knowledge and belief, the                  |
|-----------------------------------------------------------------|--------------------------------------------------------------------------------------|
| tinancial report pertaining to the firm of M&Co. Securities LLC | as of                                                                                |
| 12/31<br>7 025                                                  | __ is true and correct. I further swear (or affirm) that neither the company nor any |

partner, officer, director, or equivalent person, as the case may be, has any proprietary interest in any account classified solely as that of a customer.

### This filing \*\* contains (check all applicable boxes):

- I (a) Statement of financial condition.
- I (b) Notes to consolidated statement of financial condition.
- O (c) Statement of income {loss} or, if there is other comprehensive income in the period(s) presented, a statement of
- comprehensive income (as defined in § 210.1-02 of Regulation S-X).
- [d) Statement of cash flows.
- [e] Statement of changes in stockholders' or partners' or sole proprietor's equity.
- [f) Statement of changes in liabilities subordinated to claims of creditors.
- O (g) Notes to consolidated financial statements.
- [ (h) Computation of net capital under 17 CFR 240.15c3-1 or 17 CFR 240.18a-1, as applicable.
- [i) Computation of tangible net worth under 17 CFR 240.18a-2.
- [] Computation for determination of customer reserve requirements pursuant to Exhibit A to 17 CFR 240.15c3-3.
- [ (k) Computation for determination of security-based swap reserve requirements pursuant to Exhibit B to 17 CFR 240.15c3-3 or Exhibit A to 17 CFR 240.18a-4, as applicable.
- [1) Computation for Determination of PAB Requirements under Exhibit A to § 240.15c3-3.
- 0 (m) Information relating to possession or control requirements for customers under 17 CFR 240.15c3-3.
- O (n) Information relating to possession or control requirements for security-based swap customers under 17 CFR 240.15c3-3(p)(2) or 17 CFR 240.18a-4, as applicable.
- O (o) Reconciliations, including appropriate explanations, of the FOCUS Report with computation of net capible net worth under 17 CFR 240.15c3-1, 17 CFR 240.18a-1, or 17 CFR 240.18a-2, as applicable, and the reserve requirements under 17 CFR 240.15c3-3 or 17 CFR 240.18a 4, as applicable, if material differences exist, or a statement that no material differences exist.
- [p) Summary of financial data for subsidiaries not consolidated in the statement of financial condition.
- (q) Oath or affirmation in accordance with 17 CFR 240.17a-5, 17 CFR 240.17a-12, or 17 CFR 240.18a-7, as applicable.
- [r) Compliance report in accordance with 17 CFR 240.17a-5 or 17 CFR 240.18a-7, as applicable.
- [s) Exemption report in accordance with 17 CFR 240.17a-5 or 17 CFR 240.18a-7, as applicable.
- [t] Independent public accountant's report based on an examination of the statement of financial condition.
- [u] Independent public accountant's report based on an examination of the financial statements under 17 CFR 240.17a-5, 17 CFR 240.18a-7, or 17 CFR 240.17a-12, as applicable.
- 0 (v) Independent public accountant's report based on an examination of certain statements in the compliance report under 17 CFR 240.17a-5 or 17 CFR 240.18a-7, as applicable.
- [v] Independent public accountant's report based on a review of the exemption report under 17 CFR 240.17a-5 or 17 CFR 240.18a-7, as applicable.
- [ (x) Supplemental reports on applying agreed-upon procedures, in accordance with 17 CFR 240.17a-12, as applicable.
- O (y) Report describing any material inadequacies found to exist or found to have existed since the date of the previous audit, or a statement that no material inadequacies exist, under 17 CFR 240.17a-12(k).
- [z) Other:
- \*\* To request confidential treatment of certain portions of this filing, see 17 CFR 240.170-5(e)[3] or 17 CFR 240.180-7(d)(2), as opplicable.

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# **M&Co. Securities LLC**

**Statement of Financial Condition [with supplemental information as required by Rule 17a-5 of the Securities and Exchange Commission]** 

**As of December 31, 2025** 

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![](_page_3_Picture_0.jpeg)

2821 West 7th Street, Suite 700 Fort Worth, Texas 76107 817-332-7905

## Report of Independent Registered Public Accounting Firm

To the Member of M&Co. Securities LLC

## Opinion on the Financial Statement

We have audited the accompanying statement of financial condition of M&Co. Securities, LLC (the Company) as of December 31, 2025, and the related notes (collectively referred to as the financial statement). In our opinion, the financial statement presents fairly, in all material respects, the financial position of the Company as of December 31, 2025, in conformity with accounting principles generally accepted in the United States of America.

## Basis for Opinion

This financial statement is the responsibility of the Company's management. Our responsibility is to express an opinion on this financial statement based on our audit. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statement is free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audit we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the entity's internal control over financial reporting. According, we express no such opinion.

Our audit included performing procedures to assess the risks of material misstatement of the financial statement, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statement. Our audit also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statement. We believe that our audit provides a reasonable basis for our opinion.

WEAVER AND TIDWELL, L.L.P.

We have served as the Company's auditor since 2025.

Fort Worth, Texas February 27, 2026

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# **M&CO. SECURITIES LLC**

STATEMENT OF FINANCIAL CONDITION AS OF DECEMBER 31, 2025

# **ASSETS**

| Cash and Cash Equivalents                       | \$<br>18,550  |
|-------------------------------------------------|---------------|
| CRD Deposit                                     | 1,690         |
| Prepaid Expenses                                | 13,600        |
| Securities Owned at Fair Value (Cost \$115,250) | 119,430       |
| TOTAL ASSETS                                    | \$<br>153,270 |

# **LIABILITIES AND MEMBER'S EQUITY**

| LIABILITIES                              |              |
|------------------------------------------|--------------|
| Accounts Payable and Accrued Liabilities | \$<br>600    |
| Non-Refundable Fees                      | 50,000       |
| TOTAL LIABILITIES                        | \$<br>50,600 |
|                                          |              |

| MEMBER'S EQUITY                       | 102,670       |
|---------------------------------------|---------------|
| TOTAL LIABILITIES AND MEMBER'S EQUITY | \$<br>153,270 |

See accompanying notes

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# M&CO. SECURITIES Inc NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 2025

#### NOTE 1. NATURE OF BUSINESS

M&Co. Securities LLC (the "Company") is a broker-dealer registered with the U.S. Securities and Exchange Commission ("SEC"), is a member of the Financial Industry Regulatory Authority, Inc. ("FINRA") and the Securities Investor Protection Corporation ("SIPC"). The Company is a Delaware limited liability company that was organized on June 19, 2024 and commenced operations on February 10, 2024. The Company is wholly-owned by Mack and Co. LLC (the "Parent"). The Company serves as the placement agent for private funds managed by its affiliate registered investment adviser, Mack & Co. Partners, LP (the "Affiliate") and other third parties, including ultra-high net worth individuals (and their affiliated entities), non-publicly traded corporations and unaffiliated investment managers primarily located in the U.S., Europe and the Middle East and in the future may serve as a placement agent in other regions. The Company's placement agent services also may include additional services, including, but not limited to, "go to market services" which may include, but not limited to, its review and comment on marketing collateral and offering documentation, assisting in the negotiation of investment related agreements and advising on the Company's go-to-market services, subscription, and investor acquisition process. The Company's primary source of revenue includes private placement fees, non-refundable retainer fees, and consulting fees.

The accompanying financial statements have been prepared on a going concern basis of accounting. To date, the Company has experienced losses primarily due to its lack of revenue producing activities, while incurring ongoing operating costs. These conditions raised substantial doubt about the Company's ability to continue as a going concern. The Company has concluded that that such doubt is alleviated due to the ongoing financial support of its Parent and Affiliate, as evidenced by a support agreement and debt-forgiveness commitments through the expense-sharing agreement, which are expected to be sufficient to enable the Company to meet its obligations as they come due for at least one year after the date the financial statements are issued.

# NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

## Basis of Presentation

The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP").

## Revenue Recognition (ASC 606)

· Contract Balances: The timing of the Company's revenue recognition may differ from the timing of payment by the Company's customers. The Company records a receivable when revenue is recognized prior to payment and the Company has an unconditional right to payment. Alternatively, when payment precedes the provision of the related services, the Company records deferred revenue until the performance obligations are satisfied. There were no accounts receivable balances at the beginning or the end of the period ended December 31, 2025. Contract liabilities totaled \$0 at the beginning of the period and \$50,000 at the end of the period ended December 31, 2025. The contract liabilities recorded as of

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{8}------------------------------------------------

# M&CO. SECURITIES Inc NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 2025

The Company has entered into an Expense Sharing Agreement with Affiliate which includes an automatic waiver provision. This provision states that any management fee payable to the Affiliate will be automatically waived or suspended if such payment would cause the Company to fall below its minimum net capital requirements.

As of December 31, 2025, the Company had net capital of \$87,381, which was \$82,381 in excess of its required net capital of \$5,000. The Company's ratio of aggregate indebtedness to net capital is 0.01 to 1.

#### FAIR VALUE MEASUREMENTS NOTE 5.

The Company's investments recorded at fair value have been categorized based on a fair value hierarchy as described in the Company's significant accounting policies in Note 2.

The following table presents information about the Fund's assets measured at fair value as of December 31, 2025:

|                                                | Level I   | Level 2 | Level 3 | Total     |
|------------------------------------------------|-----------|---------|---------|-----------|
| Securities owned                               |           |         |         |           |
| Fixed income                                   | \$119,430 |         |         | \$119,430 |
| Total Assets Held at Fair Value      \$119,430 |           |         |         | \$119,430 |

#### NOTE 6. COMMITMENTS AND CONTIGENCIES

In the normal course of business, the Company may be exposed in various and unasserted potential claims. Management believes that the outcome of any such proceedings will not have a material adverse effect on the Company's financial position or results of operations.

#### SEGMENT INFORMATION NOTE 7.

The Company has one reportable segment: private placement-related services. The Company has identified its chief executive officer as the chief operating decision maker ("CODM""), who uses net income to evaluate the results of the business, predominantly in the forecasting process, to manage the Company. Additionally, the CODM monitors net capital levels (see note 5) as part of applicable regulatory compliance requirements. The Company's operations constitute a single operating segment and therefore, a single reportable segment, because the CODM manages the business activities using information of the Company as a whole. The accounting policies used to measure the profit and loss of the segment are the same as those described in the summary of significant accounting policies (see Note 2).

{9}------------------------------------------------

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Source: SEC EDGAR via Adviser Search (https://search.stillhousedata.com). Agents: see https://search.stillhousedata.com/llms.txt.
