Last 12 months
Inside the activity.
0 purchase rows · 11 sale rows
Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.Monthly counts
| Month | Purchases | Sales |
|---|---|---|
| Nov 2025 | 0 | 0 |
| Dec 2025 | 0 | 1 |
| Jan 2026 | 0 | 0 |
| Feb 2026 | 0 | 0 |
| Mar 2026 | 0 | 3 |
| Apr 2026 | 0 | 0 |
| May 2026 | 0 | 0 |
| Jun 2026 | 0 | 1 |
| Jul 2026 | 0 | 3 |
| Aug 2026 | 0 | 1 |
| Sep 2026 | 0 | 2 |
| Oct 2026 | 0 | 0 |
Latest available
Insider transactions
Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Owner / reported role | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| May 01, 2026 Filed May 1, 2026 20:14 UTC |
Jones John JudeChief Marketing Officer
|
GrantRestricted Stock Units · Derivative | 5,963 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000109 · form4.xml · derivative · entry 1 Jones John Jude · CIK 0001959460 · Chief Marketing Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,963 Underlying: Common Stock · 5,963 shares Expires not disclosed F1 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F2 · kind: These restricted stock units vest in three equal annual installments on May 15, 2027, 2028 and 2029. F3 · derivative.exercise_date: Not Applicable F3 · derivative.expiration_date: Not Applicable Read SEC document |
| May 01, 2026 Filed May 1, 2026 20:11 UTC |
Beswick PaulSVP, Chief Information Officer
|
GrantRestricted Stock Units · Derivative | 14,907 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000106 · form4.xml · derivative · entry 1 Beswick Paul · CIK 0001836104 · SVP, Chief Information Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 14,907 Underlying: Common Stock · 14,907 shares Expires not disclosed F1 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F2 · kind: These restricted stock units vest in three equal annual installments on May 15, 2027, 2028 and 2029. F3 · derivative.exercise_date: Not Applicable F3 · derivative.expiration_date: Not Applicable Read SEC document |
| May 01, 2026 Filed May 1, 2026 20:09 UTC |
MCGIVNEY MARK CEVP, CFO and COO
|
GrantRestricted Stock Units · Derivative | 59,627 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000104 · form4.xml · derivative · entry 1 MCGIVNEY MARK C · CIK 0001269360 · EVP, CFO and COO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 59,627 Underlying: Common Stock · 59,627 shares Expires not disclosed F1 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F2 · kind: These restricted stock units vest in three equal annual installments on May 15, 2027, 2028 and 2029. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| May 01, 2026 Filed May 1, 2026 20:10 UTC |
South MartinChief Client Officer
|
GrantRestricted Stock Units · Derivative | 5,963 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000105 · form4.xml · derivative · entry 1 South Martin · CIK 0001901227 · Chief Client Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,963 Underlying: Common Stock · 5,963 shares Expires not disclosed F1 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F2 · kind: These restricted stock units vest in three equal annual installments on May 15, 2027, 2028 and 2029. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| May 01, 2026 Filed May 1, 2026 20:08 UTC |
Studer Nicholas MarkPresident and CEO Marsh Risk
|
GrantRestricted Stock Units · Derivative | 8,945 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000103 · form4.xml · derivative · entry 1 Studer Nicholas Mark · CIK 0001871327 · President and CEO Marsh Risk 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 14,711 Underlying: Common Stock · 8,945 shares Expires not disclosed F1 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F2 · kind: These restricted stock units vest in three equal annual installments on May 15, 2027, 2028 and 2029. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| May 01, 2026 Filed May 1, 2026 20:05 UTC |
Tomlinson PatrickPresident and CEO, Mercer
|
GrantRestricted Stock Units · Derivative | 14,907 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000101 · form4.xml · derivative · entry 1 Tomlinson Patrick · CIK 0002016426 · President and CEO, Mercer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 19,761 Underlying: Common Stock · 14,907 shares Expires not disclosed F1 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F2 · kind: These restricted stock units vest in three equal annual installments on May 15, 2027, 2028 and 2029. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| May 01, 2026 Filed May 1, 2026 20:07 UTC |
Doyle John QPresident and CEO
|
GrantRestricted Stock Units · Derivative | 89,441 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000102 · form4.xml · derivative · entry 1 Doyle John Q · CIK 0001580963 · President and CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 89,441 Underlying: Common Stock · 89,441 shares Expires not disclosed F1 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F2 · kind: These restricted stock units vest in three equal annual installments on May 15, 2027, 2028 and 2029. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| May 01, 2026 Filed May 1, 2026 20:01 UTC |
Brennan KatherineSVP and General Counsel
|
GrantRestricted Stock Units · Derivative | 5,963 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000099 · form4.xml · derivative · entry 1 Brennan Katherine · CIK 0001917984 · SVP and General Counsel 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,963 Underlying: Common Stock · 5,963 shares Expires not disclosed F1 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F2 · kind: These restricted stock units vest in three equal annual installments on May 15, 2027, 2028 and 2029. F3 · derivative.exercise_date: Not Applicable F3 · derivative.expiration_date: Not Applicable Read SEC document |
| May 01, 2026 Filed May 1, 2026 20:03 UTC |
Fernandez CarmenSVP, Chief People Officer
|
GrantRestricted Stock Units · Derivative | 5,963 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000100 · form4.xml · derivative · entry 1 Fernandez Carmen · CIK 0001838241 · SVP, Chief People Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,963 Underlying: Common Stock · 5,963 shares Expires not disclosed F1 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F2 · kind: These restricted stock units vest in three equal annual installments on May 15, 2027, 2028 and 2029. F3 · derivative.exercise_date: Not Applicable F3 · derivative.expiration_date: Not Applicable Read SEC document |
| April 01, 2026 Filed Apr 3, 2026 20:12 UTC |
Studer Nicholas MarkPresident and CEO Marsh Risk
|
GrantRestricted Stock Units · Derivative | 5,766 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000075 · form4.xml · derivative · entry 1 Studer Nicholas Mark · CIK 0001871327 · President and CEO Marsh Risk 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,766 Underlying: Common Stock · 5,766 shares Expires not disclosed F1 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F2 · kind: These restricted stock units vest on April 15, 2029. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| March 15, 2026 Filed Mar 17, 2026 20:10 UTC |
Tomlinson PatrickPresident and CEO, Mercer
|
Exercise / conversionRestricted Stock Units · Derivative | 1,228 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000073 · form4.xml · derivative · entry 3 Tomlinson Patrick · CIK 0002016426 · President and CEO, Mercer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,854 Underlying: Common Stock · 1,228 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person of 1,228 shares underlying restricted stock units of which 627 shares were withheld by Marsh & McLennan Companies to cover applicable taxes. These 1,228 shares underlying restricted stock units were granted on March 1, 2023. F3 · derivative.exercise_date: Not Applicable. F3 · derivative.expiration_date: Not Applicable. Read SEC document |
| March 15, 2026 Filed Mar 17, 2026 20:10 UTC |
Tomlinson PatrickPresident and CEO, Mercer
|
Tax withholdingCommon Stock | 627 | $172.15 | $107,938.05 |
DisclosureSEC source: 0000062709-26-000073 · form4.xml · nonDerivative · entry 2 Tomlinson Patrick · CIK 0002016426 · President and CEO, Mercer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,256 F1 · kind: Vesting and distribution to reporting person of 1,228 shares underlying restricted stock units of which 627 shares were withheld by Marsh & McLennan Companies to cover applicable taxes. These 1,228 shares underlying restricted stock units were granted on March 1, 2023. Read SEC document |
| March 15, 2026 Filed Mar 17, 2026 20:10 UTC |
Tomlinson PatrickPresident and CEO, Mercer
|
Exercise / conversionCommon Stock | 1,228 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000073 · form4.xml · nonDerivative · entry 1 Tomlinson Patrick · CIK 0002016426 · President and CEO, Mercer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,883 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person of 1,228 shares underlying restricted stock units of which 627 shares were withheld by Marsh & McLennan Companies to cover applicable taxes. These 1,228 shares underlying restricted stock units were granted on March 1, 2023. Read SEC document |
| March 11, 2026 Filed Mar 12, 2026 20:05 UTC |
Jones John JudeChief Marketing Officer
|
SaleCommon Stock | 2,362 | $173.61 | $410,067.06 |
DisclosureSEC source: 0000062709-26-000072 · form4.xml · nonDerivative · entry 1 Jones John Jude · CIK 0001959460 · Chief Marketing Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 7,978 Read SEC document |
| March 04, 2026 Filed Mar 5, 2026 22:01 UTC |
Doyle John QPresident and CEO
|
Exercise / conversionStock Options (Right to Buy) · Derivative | 16,655 | $0.00 Strike: $73.20 | $0.00 |
DisclosureSEC source: 0000062709-26-000065 · form4.xml · derivative · entry 3 Doyle John Q · CIK 0001580963 · President and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 49,968 Underlying: Common Stock · 16,655 shares Expires 2027-02-21 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person. F2 · derivative.exercise_date: These options were granted on February 22, 2017 and vested in four equal annual installments on February 22nd of 2018, 2019, 2020 and 2021. Read SEC document |
| March 04, 2026 Filed Mar 5, 2026 22:01 UTC |
Doyle John QPresident and CEO
|
Exercise / conversionCommon Stock | 16,655 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000065 · form4.xml · nonDerivative · entry 2 Doyle John Q · CIK 0001580963 · President and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 133,466.0205 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person. Read SEC document |
| March 04, 2026 Filed Mar 5, 2026 22:01 UTC |
Doyle John QPresident and CEO
|
SaleCommon Stock | 16,655 | $183.30 | $3,052,861.50 |
DisclosureSEC source: 0000062709-26-000065 · form4.xml · nonDerivative · entry 1 Doyle John Q · CIK 0001580963 · President and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 116,811.0205 F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person. Read SEC document |
| March 03, 2026 Filed Mar 4, 2026 21:26 UTC |
Studer Nicholas MarkPresident and CEO of OWG
|
SaleCommon Stock | 3,837 | $184.03 | $706,122.73 |
DisclosureSEC source: 0000062709-26-000064 · form4.xml · nonDerivative · entry 1 Studer Nicholas Mark · CIK 0001871327 · President and CEO of OWG 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 32,536 F1 · kind: Shares sold by the reporting person to satisfy tax withholding obligations. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:14 UTC |
Beswick PaulSVP, Chief Information Officer
|
Exercise / conversionRestricted Stock Units · Derivative | 6,970 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000062 · form4.xml · derivative · entry 3 Beswick Paul · CIK 0001836104 · SVP, Chief Information Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 6,970 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person of 6,970 shares underlying restricted stock units of which 3,403 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 6,970 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F3 · derivative.exercise_date: Not Applicable F3 · derivative.expiration_date: Not Applicable Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:14 UTC |
Beswick PaulSVP, Chief Information Officer
|
Tax withholdingCommon Stock | 3,403 | $186.74 | $635,476.22 |
DisclosureSEC source: 0000062709-26-000062 · form4.xml · nonDerivative · entry 2 Beswick Paul · CIK 0001836104 · SVP, Chief Information Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 17,089 F1 · kind: Vesting and distribution to reporting person of 6,970 shares underlying restricted stock units of which 3,403 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 6,970 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:14 UTC |
Beswick PaulSVP, Chief Information Officer
|
Exercise / conversionCommon Stock | 6,970 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000062 · form4.xml · nonDerivative · entry 1 Beswick Paul · CIK 0001836104 · SVP, Chief Information Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,492 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person of 6,970 shares underlying restricted stock units of which 3,403 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 6,970 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:13 UTC |
Brennan KatherineSVP and General Counsel
|
Exercise / conversionRestricted Stock Units · Derivative | 6,970 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000061 · form4.xml · derivative · entry 3 Brennan Katherine · CIK 0001917984 · SVP and General Counsel 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 6,970 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person of 6,970 shares underlying restricted stock units of which 3,855 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 6,970 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F3 · derivative.exercise_date: Not Applicable F3 · derivative.expiration_date: Not Applicable Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:13 UTC |
Brennan KatherineSVP and General Counsel
|
Tax withholdingCommon Stock | 3,855 | $186.74 | $719,882.70 |
DisclosureSEC source: 0000062709-26-000061 · form4.xml · nonDerivative · entry 2 Brennan Katherine · CIK 0001917984 · SVP and General Counsel 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 7,330 F1 · kind: Vesting and distribution to reporting person of 6,970 shares underlying restricted stock units of which 3,855 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 6,970 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:13 UTC |
Brennan KatherineSVP and General Counsel
|
Exercise / conversionCommon Stock | 6,970 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000061 · form4.xml · nonDerivative · entry 1 Brennan Katherine · CIK 0001917984 · SVP and General Counsel 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 11,185 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person of 6,970 shares underlying restricted stock units of which 3,855 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 6,970 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:12 UTC |
Doyle John QPresident and CEO
|
Exercise / conversionRestricted Stock Units · Derivative | 59,510 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000060 · form4.xml · derivative · entry 3 Doyle John Q · CIK 0001580963 · President and CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 59,510 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person of 59,510 shares underlying restricted stock units of which 30,380 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 59,510 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:12 UTC |
Doyle John QPresident and CEO
|
Tax withholdingCommon Stock | 30,380 | $186.74 | $5,673,161.20 |
DisclosureSEC source: 0000062709-26-000060 · form4.xml · nonDerivative · entry 2 Doyle John Q · CIK 0001580963 · President and CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 116,811.0205 F1 · kind: Vesting and distribution to reporting person of 59,510 shares underlying restricted stock units of which 30,380 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 59,510 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:12 UTC |
Doyle John QPresident and CEO
|
Exercise / conversionCommon Stock | 59,510 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000060 · form4.xml · nonDerivative · entry 1 Doyle John Q · CIK 0001580963 · President and CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 147,191.0205 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person of 59,510 shares underlying restricted stock units of which 30,380 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 59,510 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:11 UTC |
Fernandez CarmenSVP, Chief People Officer
|
Exercise / conversionRestricted Stock Units · Derivative | 6,970 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000059 · form4.xml · derivative · entry 4 Fernandez Carmen · CIK 0001838241 · SVP, Chief People Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 6,970 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person of 6,970 shares underlying restricted stock units of which 3,855 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 6,970 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F4 · derivative.exercise_date: Not applicable. F4 · derivative.expiration_date: Not applicable. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:11 UTC |
Fernandez CarmenSVP, Chief People Officer
|
Tax withholdingCommon Stock | 3,855 | $186.74 | $719,882.70 |
DisclosureSEC source: 0000062709-26-000059 · form4.xml · nonDerivative · entry 2 Fernandez Carmen · CIK 0001838241 · SVP, Chief People Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 12,995 F1 · kind: Vesting and distribution to reporting person of 6,970 shares underlying restricted stock units of which 3,855 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 6,970 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:11 UTC |
Fernandez CarmenSVP, Chief People Officer
|
Exercise / conversionCommon Stock | 6,970 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000059 · form4.xml · nonDerivative · entry 1 Fernandez Carmen · CIK 0001838241 · SVP, Chief People Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 16,850 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person of 6,970 shares underlying restricted stock units of which 3,855 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 6,970 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:10 UTC |
Jones John JudeChief Marketing Officer
|
Exercise / conversionRestricted Stock Units · Derivative | 4,826 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000058 · form4.xml · derivative · entry 5 Jones John Jude · CIK 0001959460 · Chief Marketing Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 4,826 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person of 4,826 shares underlying restricted stock units of which 2,464 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 4,826 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F4 · derivative.exercise_date: Not applicable. F4 · derivative.expiration_date: Not applicable. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:10 UTC |
Jones John JudeChief Marketing Officer
|
Tax withholdingCommon Stock | 2,464 | $186.74 | $460,127.36 |
DisclosureSEC source: 0000062709-26-000058 · form4.xml · nonDerivative · entry 2 Jones John Jude · CIK 0001959460 · Chief Marketing Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 10,340 F1 · kind: Vesting and distribution to reporting person of 4,826 shares underlying restricted stock units of which 2,464 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 4,826 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:10 UTC |
Jones John JudeChief Marketing Officer
|
Exercise / conversionCommon Stock | 4,826 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000058 · form4.xml · nonDerivative · entry 1 Jones John Jude · CIK 0001959460 · Chief Marketing Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 12,804 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person of 4,826 shares underlying restricted stock units of which 2,464 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 4,826 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:09 UTC |
Klisura Dean MichaelPresident & CEO, Guy Carpenter
|
Exercise / conversionRestricted Stock Units · Derivative | 9,383 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000057 · form4.xml · derivative · entry 3 Klisura Dean Michael · CIK 0001901304 · President & CEO, Guy Carpenter 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 9,383 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person of 9,383 shares underlying restricted stock units of which 5,189 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 9,383 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:09 UTC |
Klisura Dean MichaelPresident & CEO, Guy Carpenter
|
Tax withholdingCommon Stock | 5,189 | $186.74 | $968,993.86 |
DisclosureSEC source: 0000062709-26-000057 · form4.xml · nonDerivative · entry 2 Klisura Dean Michael · CIK 0001901304 · President & CEO, Guy Carpenter 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 25,129.48 F1 · kind: Vesting and distribution to reporting person of 9,383 shares underlying restricted stock units of which 5,189 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 9,383 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:09 UTC |
Klisura Dean MichaelPresident & CEO, Guy Carpenter
|
Exercise / conversionCommon Stock | 9,383 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000057 · form4.xml · nonDerivative · entry 1 Klisura Dean Michael · CIK 0001901304 · President & CEO, Guy Carpenter 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 30,318.48 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person of 9,383 shares underlying restricted stock units of which 5,189 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 9,383 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:07 UTC |
MCGIVNEY MARK CChief Financial Officer
|
Exercise / conversionRestricted Stock Units · Derivative | 17,961 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000056 · form4.xml · derivative · entry 3 MCGIVNEY MARK C · CIK 0001269360 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 17,961 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person of 17,961 shares underlying restricted stock units of which 9,170 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 17,961 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:07 UTC |
MCGIVNEY MARK CChief Financial Officer
|
Tax withholdingCommon Stock | 9,170 | $186.74 | $1,712,405.80 |
DisclosureSEC source: 0000062709-26-000056 · form4.xml · nonDerivative · entry 2 MCGIVNEY MARK C · CIK 0001269360 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 42,469 F1 · kind: Vesting and distribution to reporting person of 17,961 shares underlying restricted stock units of which 9,170 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 17,961 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:07 UTC |
MCGIVNEY MARK CChief Financial Officer
|
Exercise / conversionCommon Stock | 17,961 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000056 · form4.xml · nonDerivative · entry 1 MCGIVNEY MARK C · CIK 0001269360 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 51,639 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person of 17,961 shares underlying restricted stock units of which 9,170 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 17,961 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:06 UTC |
Mills StacyVice President and Controller
|
Exercise / conversionRestricted Stock Units · Derivative | 2,723 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000055 · form4.xml · derivative · entry 3 Mills Stacy · CIK 0001726937 · Vice President and Controller 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,916 Underlying: Common Stock · 2,723 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person of 2,723 shares underlying restricted stock units of which 1,277 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 2,723 shares underlying restricted stock units relate to 508 restricted stock units that were granted on February 23, 2023, 457 restricted stock units that were granted on February 22, 2024, 416 restricted stock units that were granted on February 18, 2025 and 1,342 restricted stock units relating to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:06 UTC |
Mills StacyVice President and Controller
|
Tax withholdingCommon Stock | 1,277 | $186.74 | $238,466.98 |
DisclosureSEC source: 0000062709-26-000055 · form4.xml · nonDerivative · entry 2 Mills Stacy · CIK 0001726937 · Vice President and Controller 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,151.098 F1 · kind: Vesting and distribution to reporting person of 2,723 shares underlying restricted stock units of which 1,277 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 2,723 shares underlying restricted stock units relate to 508 restricted stock units that were granted on February 23, 2023, 457 restricted stock units that were granted on February 22, 2024, 416 restricted stock units that were granted on February 18, 2025 and 1,342 restricted stock units relating to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:06 UTC |
Mills StacyVice President and Controller
|
Exercise / conversionCommon Stock | 2,723 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000055 · form4.xml · nonDerivative · entry 1 Mills Stacy · CIK 0001726937 · Vice President and Controller 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,428.098 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person of 2,723 shares underlying restricted stock units of which 1,277 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 2,723 shares underlying restricted stock units relate to 508 restricted stock units that were granted on February 23, 2023, 457 restricted stock units that were granted on February 22, 2024, 416 restricted stock units that were granted on February 18, 2025 and 1,342 restricted stock units relating to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:05 UTC |
South MartinPresident & CEO, Marsh Risk
|
Exercise / conversionRestricted Stock Units · Derivative | 14,476 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000054 · form4.xml · derivative · entry 3 South Martin · CIK 0001901227 · President & CEO, Marsh Risk 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 14,476 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person of 14,476 shares underlying restricted stock units of which 8,006 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 14,476 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F4 · derivative.exercise_date: Not applicable. F4 · derivative.expiration_date: Not applicable. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:05 UTC |
South MartinPresident & CEO, Marsh Risk
|
Tax withholdingCommon Stock | 8,006 | $186.74 | $1,495,040.44 |
DisclosureSEC source: 0000062709-26-000054 · form4.xml · nonDerivative · entry 2 South Martin · CIK 0001901227 · President & CEO, Marsh Risk 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 23,650.539 F1 · kind: Vesting and distribution to reporting person of 14,476 shares underlying restricted stock units of which 8,006 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 14,476 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:05 UTC |
South MartinPresident & CEO, Marsh Risk
|
Exercise / conversionCommon Stock | 14,476 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000054 · form4.xml · nonDerivative · entry 1 South Martin · CIK 0001901227 · President & CEO, Marsh Risk 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 31,656.539 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person of 14,476 shares underlying restricted stock units of which 8,006 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 14,476 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F2 · balance_after: Includes 118.022 shares acquired under the Marsh & McLennan Companies Employee Stock Purchase Plan for the quarters ended March 31, June 30, September 30 and December 31, 2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:03 UTC |
Studer Nicholas MarkPresident and CEO of OWG
|
Exercise / conversionRestricted Stock Units · Derivative | 8,044 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000053 · form4.xml · derivative · entry 2 Studer Nicholas Mark · CIK 0001871327 · President and CEO of OWG 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 8,044 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person 8,044 shares underlying restricted stock units. These 8,044 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:03 UTC |
Studer Nicholas MarkPresident and CEO of OWG
|
Exercise / conversionCommon Stock | 8,044 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000053 · form4.xml · nonDerivative · entry 1 Studer Nicholas Mark · CIK 0001871327 · President and CEO of OWG 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 36,373 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person 8,044 shares underlying restricted stock units. These 8,044 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:02 UTC |
Tomlinson PatrickPresident and CEO, Mercer
|
Exercise / conversionRestricted Stock Units · Derivative | 2,219 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000052 · form4.xml · derivative · entry 3 Tomlinson Patrick · CIK 0002016426 · President and CEO, Mercer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,082 Underlying: Common Stock · 2,219 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. F1 · kind: Vesting and distribution to reporting person of 2,219 shares underlying restricted stock units of which 1,134 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 2,219 shares underlying restricted stock units relate to 610 restricted stock units that were granted on February 23, 2023 and 1,609 restricted stock units relating to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. F3 · derivative.exercise_date: Not applicable. F3 · derivative.expiration_date: Not applicable. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:02 UTC |
Tomlinson PatrickPresident and CEO, Mercer
|
Tax withholdingCommon Stock | 1,139 | $186.74 | $212,696.86 |
DisclosureSEC source: 0000062709-26-000052 · form4.xml · nonDerivative · entry 2 Tomlinson Patrick · CIK 0002016426 · President and CEO, Mercer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,655 F1 · kind: Vesting and distribution to reporting person of 2,219 shares underlying restricted stock units of which 1,134 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 2,219 shares underlying restricted stock units relate to 610 restricted stock units that were granted on February 23, 2023 and 1,609 restricted stock units relating to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
| February 28, 2026 Filed Mar 3, 2026 21:02 UTC |
Tomlinson PatrickPresident and CEO, Mercer
|
Exercise / conversionCommon Stock | 2,219 | $0.00 | $0.00 |
DisclosureSEC source: 0000062709-26-000052 · form4.xml · nonDerivative · entry 1 Tomlinson Patrick · CIK 0002016426 · President and CEO, Mercer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,794 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Vesting and distribution to reporting person of 2,219 shares underlying restricted stock units of which 1,134 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 2,219 shares underlying restricted stock units relate to 610 restricted stock units that were granted on February 23, 2023 and 1,609 restricted stock units relating to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.