Company Update

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 19, 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 Indicate by check mark         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 8.01 Other Events On February 11, 2026, Marsh & McLennan Companies, Inc. (the “Company”) entered into an underwriting agreement (attached hereto as Exhibit 1.1 and incorporated herein by reference, the “Underwriting Agreement”) with Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Wells Fargo Securities, LLC, as representatives of the several underwriters named therein (the “Underwriters”), pursuant to which the Underwriters agreed to purchase from the Company $600 million aggregate principal amount of its 4.950% Senior Notes due 2036 (the “Notes”). The Notes were registered under the Company’s effective shelf registration statement on Form S-3 (Registration No. 333-280979) under the Securities Act of 1933, as amended, as filed with the Securities and Exchange Commission on July 24, 2024, and were offered by means of the Company’s prospectus dated July 24, 2024, as supplemented by the prospectus supplement dated February 11, 2026. The Notes were issued on February 19, 2026, pursuant to the Indenture dated July 15, 2011, by and between the Company and The Bank of New York Mellon, as trustee (the “Trustee”), filed as Exhibit 4.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2011, as supplemented by the Twenty-First Supplemental Indenture (the “Supplemental Indenture”), dated as of February 19, 2026, by and between the Company and the Trustee, which is attached hereto as Exhibit 4.1 and is incorporated herein by reference. The form of the Notes is attached hereto as Exhibit 4.2 and is incorporated herein by reference. The foregoing descriptions of the Underwriting Agreement, the Supplemental Indenture and the Notes contained herein are summaries and are qualified in their entirety by the Underwriting Agreement, the Supplemental Indenture and the form of Notes attached hereto as Exhibits 1.1, 4.1 and 4.2, respectively. A copy of the opinion of Davis Polk & Wardwell LLP, counsel to the Company, relating to the legality of the Notes is filed as Exhibit 5.1 hereto.   Item 9.01 Financial Statements and Exhibits (d) Exhibits   Exhibit No.    Description 1.1    Underwriting Agreement, dated February 11, 2026, by and among Marsh & McLennan Companies, Inc. and Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Wells Fargo Securities, LLC, as representatives of the several underwriters named therein. 4.1    Twenty-First Supplemental Indenture, dated February 19, 2026, between Marsh & McLennan Companies, Inc. and The Bank of New York Mellon, as trustee. 4.2    Form of 4.950% Senior Notes due 2036 (included in Exhibit 4.1 above). 5.1    Opinion of Davis Polk & Wardwell. 23.1    Consent of Davis Polk & Wardwell (included in Exhibit 5.1 above). 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).   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 & Corporate Secretary Date: February 19, 2026