Peter Harrison joins Marsh McLennan (NYSE: MMC) board of directors

Rhea-AI Filing Summary

Marsh & McLennan Companies, Inc. has appointed Peter Harrison, age 59, as an independent member of its board of directors, effective February 25, 2026. With his addition, the Board now consists of 13 directors.

Harrison brings more than three decades of investment management and executive leadership experience, including serving as CEO of Schroders plc and senior roles at RWC Partners and Deutsche Bank’s asset management businesses. He currently chairs Morgan Sindall plc’s board and serves on Lazard, Inc.’s board, alongside multiple industry and community leadership roles.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

_____________________

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported) February 25, 2026

Marsh & McLennan Companies, Inc.

(Exact Name of Registrant as Specified in its Charter)

Delaware			1-5998			36-2668272
(State or Other Jurisdiction of Incorporation)			(Commission File Number)			(IRS Employer Identification No.)

1166 Avenue of the Americas,

New York,

NY

10036

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s telephone number, including area code (212) 345-5000

    Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

    Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading symbol(s)

Name of exchange on which registered

Common Stock, par value $1.00 per share

MRSH

New York Stock Exchange

NYSE Texas

    Indicate by check mark whether the registrant is an emerging growth company as defined in as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

			Emerging growth company			☐
			If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.			☐

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

(d) On February 25, 2026, the board of directors (the “Board”) of Marsh & McLennan Companies, Inc. (the “Company”) appointed Peter Harrison, age 59, as an independent member of the Board, effective immediately. Mr. Harrison’s Board committee assignments have not yet been determined. The Company expects to disclose such assignments in its definitive proxy statement for its 2026 Annual Meeting of Stockholders.

As a non-management director, Mr. Harrison will be compensated as described in “Description of Compensation Arrangements for Independent Directors”, which was filed as Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2025.

A copy of the Company's press release, dated February 25, 2026, announcing the appointment of Mr. Harrison is attached hereto as Exhibit 99.1 and incorporated herein by reference.

Item 9.01        Financial Statements and Exhibits

(d)        Exhibits

99.1 Press release issued by Marsh & McLennan Companies, Inc. on February 25, 2026

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SIGNATURES

    Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

			MARSH & McLENNAN COMPANIES, INC.
			By:			/s/ Connor Kuratek
			Name:			Connor Kuratek
			Title:			Deputy General Counsel and Corporate Secretary

Date:    February 25, 2026

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Marsh T+1 212 345 5000

News release Exhibit 99.1

Media Contact: Erick Gustafson +1 202 263 7788 Erick.Gustafson@marsh.com Investor Contact: Jay Gelb +1 212 345 1569 Jay.Gelb@marsh.com

Marsh appoints Peter Harrison to its Board of Directors

NEW YORK, February 25, 2026 ­─­ Marsh (NYSE: MRSH), a global leader in risk, reinsurance and capital, people and investments, and management consulting, today appointed Peter Harrison as a director, effective immediately. The Company’s Board now consists of 13 directors.

Commenting on Mr. Harrison’s appointment, H. Edward Hanway, Chair of the Company’s Board of Directors, said, “We are pleased to welcome Peter as a director. We are committed to ensuring the right blend of skills and experience on our Board, and Peter’s investment and global leadership experience aligns with Marsh’s vision for growth and innovation."

John Doyle, President and CEO of Marsh, said, “Peter’s proven track record as a financial services CEO, as well as his experience in asset management, will offer a valuable perspective as we further our efforts to deliver even greater value to our clients, colleagues, investors and communities.”

Mr. Harrison has over three decades of experience in investment management and executive leadership. He retired from Schroders plc in 2024 after more than a decade at the firm, serving as CEO from 2016, and previously as Global Head of Investment. He also led RWC Partners (now RedWheel) as Chairman and Chief Executive Officer from 2006 to 2013 and served as Global Chief Investment Officer of Deutsche Bank’s asset management businesses from 2004 to 2006.

Mr. Harrison is Chair of the Board of Directors of Morgan Sindall plc. He also serves on the Board of Directors of Lazard, Inc. He is actively involved in several industry and community organizations, including the UK Capital Markets Industry Taskforce, and is Chair of Business in the Community, the business charity of His Majesty King Charles III. He also serves on the UK Economy Honours Committee and as an advisor to FCLT Global, a non-profit association dedicated to promoting long-term investing.

About Marsh McLennan

Marsh (NYSE: MRSH) is a global leader in risk, reinsurance and capital, people and investments, and management consulting, advising clients in 130 countries. With annual revenue of over $24 billion and more than 95,000 colleagues, Marsh helps build the confidence to thrive through the power of perspective. For more information, visit corporate.marsh.com, or follow on LinkedIn and X.

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FAQ

What did Marsh McLennan (MMC) announce about its board of directors?

Marsh McLennan announced the appointment of Peter Harrison as an independent director, effective February 25, 2026. His addition brings the company’s Board to 13 members and adds deep investment management and global leadership experience to the boardroom.

Who is Peter Harrison, the new director at Marsh McLennan (MMC)?

Peter Harrison is a veteran investment executive with over three decades of experience. He was CEO of Schroders plc, led RWC Partners as Chairman and CEO, and served as Global Chief Investment Officer for Deutsche Bank’s asset management businesses, bringing broad financial leadership expertise.

When did Peter Harrison join Marsh McLennan’s (MMC) board and in what capacity?

Peter Harrison joined Marsh McLennan’s board on February 25, 2026, as an independent, non-management director. His committee assignments will be determined later and are expected to be disclosed in the company’s definitive proxy statement for its 2026 Annual Meeting of Stockholders.

How will Peter Harrison be compensated as a director at Marsh McLennan (MMC)?

As a non-management director, Peter Harrison will be compensated under the company’s existing arrangements for independent directors. These arrangements are described in the document titled “Description of Compensation Arrangements for Independent Directors,” filed as Exhibit 10.2 to Marsh McLennan’s Form 10-Q for June 30, 2025.

What relevant board and industry roles does Peter Harrison currently hold?

Peter Harrison is Chair of the Board of Directors of Morgan Sindall plc and a director of Lazard, Inc. He also holds several industry and community roles, including Chair of Business in the Community and participation in the UK Capital Markets Industry Taskforce and the UK Economy Honours Committee.

How large is Marsh McLennan (MMC) and what is its business focus?

Marsh McLennan is a global leader in risk, reinsurance and capital, people and investments, and management consulting, advising clients in 130 countries. It generates annual revenue of over $24 billion and employs more than 95,000 colleagues worldwide across its diversified professional services operations.

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 EX-99.1 10.1 KB