# EDGAR Filing Document

**Accession Number:** 0000062709
**File Stem:** 0000062709-26-000063
**Filing Date:** 2026-3
**Character Count:** 6768
**Document Hash:** dd24f8c069b12c561af855e42c0fa3ce
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000062709-26-000063.hdr.sgml**: 20260303

**ACCESSION NUMBER**: 0000062709-26-000063

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260225

**FILED AS OF DATE**: 20260303

**DATE AS OF CHANGE**: 20260303

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Harrison Peter
- **CENTRAL INDEX KEY:** 0002059823

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-05998
- **FILM NUMBER:** 26714369

**MAIL ADDRESS:**
- **STREET 1:** FOX HILL
- **STREET 2:** INKPEN
- **CITY:** BERKSHIRE
- **STATE:** X0
- **ZIP:** RG17 9DE
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MARSH & MCLENNAN COMPANIES, INC.
- **CENTRAL INDEX KEY:** 0000062709
- **STANDARD INDUSTRIAL CLASSIFICATION:** INSURANCE AGENTS BROKERS & SERVICES [6411]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 362668272
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 1166 AVENUE OF THE AMERICAS
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036
- **BUSINESS PHONE:** 2123455000

**MAIL ADDRESS:**
- **STREET 1:** 1166 AVENUE OF THE AMERICAS
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MARSH & MCLENNAN COMPANIES INC
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MARLENNAN CORP
- **DATE OF NAME CHANGE:** 19760505

## Ex-24

```

			POWER OF ATTORNEY
		FOR SECTION 16 AND EU MARKET ABUSE REGULATION FILINGS

Know all by these presents that the undersigned hereby constitutes and
appoints each of Asha Amin, Connor Kuratek and Tessa Patti
signing singly, his or her true and lawful attorney-in-fact to:

(1)	execute for and on behalf of the undersigned Forms 3, 4
	and 5 in accordance with Section 16(a) of the Securities
	Exchange Act of 1934 and the rules thereunder;

(2)	do and perform any and all acts for and on behalf of the
	undersigned which may be necessary or desirable to complete
	the execution of any such Form 3, 4 or 5 and the timely
	filing of such form with the United States Securities and
	Exchange Commission and any other authority; and

(3)	take any other action of any type whatsoever in connection
	with the foregoing which, in the opinion of such
	attorney-in-fact, may be of benefit to, in the best interest
		of, or legally required by, the undersigned, it being
		understood that the documents executed by such
		attorney-in-fact on behalf of the undersigned pursuant to
		this Power of Attorney shall be in such form and shall
		contain such terms and conditions as such attorney-in-fact
		may approve in his or her discretion.

The undersigned hereby grants to each such attorney-in-fact full power
and
authority to do and perform each and every act and thing whatsoever
requisite,
necessary and proper to be done in the exercise of any of the rights and
powers
herein granted, as fully to all intents and purposes as the undersigned
might or
could do if personally present, with full power of substitution or
revocation,
hereby ratifying and confirming all that such attorney-in-fact, or
his or her
substitute or substitutes, shall lawfully do or cause to be done by
virtue of
this Power of Attorney and the rights and powers herein granted.  The
undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in
such capacity at the request of the undersigned, are not assuming
any of the
undersigned's responsibilities to comply with Section 16 of the
Securities
Exchange Act of 1934, as amended.  This authorization shall remain in effect
unless
and until
it is revoked in writing by the undersigned.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 25th day of February, 2025.

						/s/ Peter Harrison
						_______________________
						Peter Harrison

```

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Harrison Peter<br><sub>(Last) (First) (Middle)</sub><br>1166 AVENUE OF THE AMERICAS<br><sub>(Street)</sub><br>NEW YORK, NY 10036<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>MARSH & MCLENNAN COMPANIES, INC. [ MRSH ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-02-25 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director   [ ] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |

---

**Signature:** /s/ Tessa Patti, Attorney-in-fact  
**Date:** 2026-03-03

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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