MARSH & MCLENNAN COMPANIES, INC. (MRSH) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-02 10b5-1 Pre-arranged Plan: Yes --- Issuer --- Name: MARSH & MCLENNAN COMPANIES, INC. (MRSH) CIK: 0000062709 --- Reporting Owner --- Name: Doyle John Q CIK: 0001580963 Role: Officer (President and CEO) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-06-02 | Code: M (Exercise of derivative) Shares: +16,656 | Price: $73.19 Total Value: $1,219,135.92 Shares Owned After: 133,467.0205 | Ownership: D (Direct) Footnotes: [F1] This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person. [Transaction #2] Security: Common Stock Date: 2026-06-02 | Code: S (Open market sale) Shares: -16,656 | Price: $161.71 Total Value: $2,693,441.76 Shares Owned After: 116,811.0205 | Ownership: D (Direct) Footnotes: [F1] This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person. --- Derivative Transactions --- [Transaction #1] Security: Stock Options (Right to Buy) Date: 2026-06-02 | Code: M (Exercise of derivative) Shares: -16,656 | Price: $0.00 Exercisable: N/A | Expires: 2027-02-21 Shares Owned After: 33,312 | Ownership: D (Direct) Footnotes: [F1] This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person. [F2] These options were granted on February 22, 2017 and vested in four equal annual installments on February 22nd of 2018, 2019, 2020 and 2021. --- Footnotes (Complete Index) --- F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person. F2: These options were granted on February 22, 2017 and vested in four equal annual installments on February 22nd of 2018, 2019, 2020 and 2021. --- Signature --- /s/ /s/ Tessa Patti, Attorney-in-fact (2026-06-03)