8-K

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) June 24, 2024

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	MMC	New York Stock Exchange
		Chicago Stock Exchange

    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 5.04 Temporary Suspension of Trading Under Registrant’s Employee Benefit Plans

On June 24, 2024, a notice (the “Notice”) of an upcoming blackout period for trading in Marsh & McLennan Companies, Inc. (“Marsh McLennan” or the “Company”) Common Stock was issued to executive officers and directors of the Company and to the Securities and Exchange Commission (the “SEC”) pursuant to Rule 104 of Regulation Blackout Trading Restriction (“BTR”) under Sarbanes-Oxley Act of 2002.

The blackout period, which is necessary to transfer the individual accounts, including those accounts with Marsh McLennan Common Stock, and the recordkeeping services related to the Company’s 401(k) Savings and Investment Plan (the “401(k) Plan”) from the current administrator of the 401(k) Plan to Alight Solutions LLC, is expected to begin on July 26, 2024 at 4:00 p.m. Easter Time and is expected to be completed by the week of August 12, 2024.

Under Sarbanes-Oxley Act of 2002 and SEC Regulation BTR, the Company’s directors and executive officers generally will be prohibited from effecting any direct or indirect transactions in Marsh McLennan Stock (including any derivative security thereof, inside or outside of the 401(k) Plan) during the blackout period.

During the blackout period and for a period of two years after the ending date of the blackout period, stockholders or other interested persons may obtain, without charge, answers to other inquiries about the BTR Blackout Period, by contacting Connor Kuratek, Deputy General Counsel, Chief Compliance Officer and Corporate Secretary, Marsh & McLennan Companies, at 1166 Avenue of the Americas, New York, New York, 10036, phone: 212-345-8796 or connor.kuratek@mmc.com.

A copy of the Notice is attached hereto as Exhibit 99.1 and is incorporated by reference herein.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits

99.1 Notice of Blackout Period Under the Marsh & McLennan Companies 401(k) Savings & Investment Plan & Marsh & McLennan Agency 401(k) Savings & Investment Plan (As Required by Rule 104 Under SEC Regulation Blackout Trading Restriction).

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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:    June 24, 2024

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EX-99.1

1166 Avenue of the Americas

New York, NY 10036

Special Blackout Notice

To:Directors & Section 16 officers of Marsh & McLennan Companies, Inc. (the “Company”), and the     

Securities and Exchange Commission (the “SEC”)

From:Connor Kuratek, Deputy General Counsel and Chief Compliance Officer, Marsh McLennan

Date:June 24, 2024

For:Notice of Blackout Period Under the Marsh & McLennan Companies 401(k) Savings &

     Investment Plan & Marsh & McLennan Agency 401(k) Savings & Investment Plan (As Required by

Rule 104 Under SEC Regulation Blackout Trading Restriction)

This notice is to inform you of an impending “blackout period” for transacting in the Company’s common stock, $1.00 par value, (together with any derivative security thereof including options or units, “MMC Stock”), due to the transition of the Marsh & McLennan Companies 401(k) Savings & Investment Plan and the Marsh & McLennan Agency 401(k) Savings & Investment Plan (together, the “Plans”) to Alight Solutions, LLC (“Alight”).

The additional restrictions during this period are imposed on the Company’s directors and officers who are subject to Section 16 of the Securities Exchange Act of 1934, as amended, by Section 306(a) of the Sarbanes-Oxley Act of 2002 and SEC Regulation Blackout Trading Restriction (such regulation, “BTR”, and such restricted individuals, the “Restricted Individuals”).

Under Sarbanes-Oxley Act of 2002 and SEC Regulation BTR, you generally will be prohibited from effecting any direct or indirect transactions in MMC Stock that you acquired in connection with your service or employment as a director or Section 16 officer of the Company.

If you engage in a transaction that violates these rules, you may be required to disgorge your profits from the transaction, and you may also be subject to civil and criminal penalties.

The BTR Blackout Period is expected to begin on July 26, 2024 at 4:00 p.m. Eastern Time and is expected to end during the calendar week of August 12, 2024. If there is a change to the beginning date or the length of the BTR Blackout Period, Marsh McLennan will provide you with notice of such adjustment as soon as reasonably practicable.

You may obtain, without charge, the actual beginning and ending dates of the BTR Blackout Period (during the blackout period and for a period of two years after the ending date of the blackout period) and answers to other inquiries about the BTR Blackout Period, by contacting Connor Kuratek, Deputy General Counsel, Chief Compliance Officer and Corporate Secretary, Marsh & McLennan Companies, at 1166 Avenue of the Americas, New York, New York, 10036, phone: 212-345-8796 or connor.kuratek@mmc.com.

Reasons for BTR Blackout Period and Plan Transactions to be Suspended

The Plans will be transitioned from the recordkeeping platform of Transamerica to the recordkeeping platform of Alight. The BTR Blackout Period is necessary to administratively transfer the individual accounts, including those accounts with MMC Stock, onto the new recordkeeping platform. As a result of this migration, each Plan’s

participants and beneficiaries, among other things, will be unable to direct or diversify assets, includingMMC Stock.

Because participants and beneficiaries in the Plan will be unable to direct or diversify assets, including MMC Stock during the BTR Blackout Period, Marsh McLennan’s directors and Section 16 officers will be subject to the trading restrictions imposed under Section 306(a) of the Sarbanes-Oxley Act of 2002 for the duration of the BTR Blackout Period.

In accordance with Section 306(a) of the Sarbanes-Oxley Act of 2002 and SEC Regulation BTR, the Restricted Individuals are prohibited during the BTR Blackout Period from, directly or indirectly, purchasing, selling or otherwise acquiring or transferring MMC Stock that was acquired in connection with your service or employment as a director or executive officer. Please note the following:

•Prohibited transactions are not limited to those involving your direct ownership, but include any transaction in which you have a pecuniary interest (for example, transactions by your immediate family members living in your household).

•There are exemptions for certain transactions including gifts, scheduled deliveries of MMC Stock pursuant to outstanding equity award grants, and other non-discretionary “automatic” transactions, such as acquisitions and dispositions pursuant to 10b5-1 plans.

•Although you are permitted to engage in transactions involving MMC Stock that were not acquired in connection with your service or employment as a director or officer, there is a presumption that any such transactions are prohibited unless you can identify the source of the shares and show that you used the same identification for all related purposes, such as tax reporting and disclosure requirements.

These restrictions apply regardless of whether you participate in either Plan.

Because of the complexity of the regulations and the severity of the penalties and other remedies, please contact me before engaging in any transaction involving MMC Stock during the BTR Blackout Period.

Thank you.

XML

Document and Entity Information	May 16, 2024
Entity Information [Line Items]
Document Type	8-K
Document Period End Date	Jun. 24, 2024
Entity Registrant Name	Marsh & McLennan Companies, Inc.
Entity Incorporation, State or Country Code	DE
Entity File Number	1-5998
Entity Tax Identification Number	36-2668272
Entity Address, Address Line One	1166 Avenue of the Americas,
Entity Address, City or Town	New York,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10036
City Area Code	(212)
Local Phone Number	345-5000
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	false
Title of 12(b) Security	Common Stock, par value $1.00 per share
Trading Symbol	MMC
Entity Central Index Key	0000062709
Amendment Flag	false
NEW YORK STOCK EXCHANGE, INC.
Entity Information [Line Items]
Security Exchange Name	NYSE
X C H I
Entity Information [Line Items]
Security Exchange Name	CHX