Marsh & McLennan officer plans $225K stock sale

An officer of Marsh & McLennan Companies has filed a Rule 144 notice to sell 1,197 common shares after a stock option exercise.

Rhea-AI Filing Summary

MARSH & MCLENNAN COMPANIES, INC. (MRSH) received a Rule 144 notice for a proposed sale of restricted or control securities. Officer Katherine J. Brennan, through Fidelity Brokerage Services LLC, plans to sell 1,197 shares of common stock on or after September 2, 2026, following a stock option exercise.

Key Figures

Shares to be sold: 1,197 shares Aggregate market value: $224,914.98 Proposed sale date: September 2, 2026 +1 more

4 metrics

Shares to be sold 1,197 shares Common stock covered by the Rule 144 notice

Aggregate market value $224,914.98 Reported value of the 1,197 common shares in the securities information section

Proposed sale date September 2, 2026 Date associated with the planned sale and stock option exercise

Security type Common stock Class of Marsh & McLennan Companies, Inc. shares to be sold

Key Terms

Rule 144, stock option exercise, attorney-in-fact

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

stock option exercise financial

"Common | 09/02/2026 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

attorney-in-fact regulatory

"as attorney-in-fact for Katherine J. Brennan."

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What does the Form 144 filing mean for MARSH & MCLENNAN COMPANIES, INC. (MRSH)?

It reports that officer Katherine J. Brennan intends to sell 1,197 shares of common stock under Rule 144 through Fidelity Brokerage Services LLC, indicating a planned disposition of restricted or control securities, not necessarily that the sale has already occurred.

How many MRSH shares are covered by Katherine J. Brennan’s Rule 144 notice?

The notice covers a proposed sale of 1,197 shares of common stock. This amount is reported as the number of securities to be sold in the Form 144 filing associated with a stock option exercise.

What is the reported market value of the MRSH shares in this Form 144?

The Form 144 lists an aggregate market value of approximately $224,914.98 for the 1,197 common shares covered by the notice, based on the information provided in the securities information section.

When are the MRSH shares covered by this Form 144 planned to be sold?

The filing states a proposed sale date of September 2, 2026 for the 1,197 common shares, tied to a stock option exercise, with trading expected on the NYSE.

Who is executing the proposed MRSH share sale under this Form 144?

The proposed sale will be executed through Fidelity Brokerage Services LLC. The Form 144 is signed by Joshua Schmitt as a duly authorized representative of Fidelity, acting as attorney-in-fact for Katherine J. Brennan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/02/2026 - 03:23 PM Accepted by SEC EDGAR 09/02/2026 - 03:22 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001917984
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	MARSH & MCLENNAN COMPANIES, INC.
SEC File Number	001-05998
Address of Issuer	1166 AVENUE OF THE AMERICAS NEW YORK NEW YORK 10036
Phone	2123455000
Name of Person for Whose Account the Securities are To Be Sold	Brennan Katherine
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	1197	224914.98	477211268	09/02/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/02/2026	Stock Option Exercise	Issuer			1197	09/02/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/02/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Joshua Schmitt, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Katherine J. Brennan.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)