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These 3,568 shares underlying restricted stock units relate to 561 restricted stock units that were granted on February 19, 2020, 745 restricted stock units that were granted on February 22, 2021, 578 restricted stock units that were granted on February 23, 2022 and 1,684 restricted stock units relating to performance stock units that were granted on February 19, 2020 for the performance period 2020-2022."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not Applicable"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not Applicable"}],"balance_after":1902,"derivative":{"underlying":"Common Stock","underlying_shares":3568},"source":{"system":"sec-edgar","filing":"0001127602-23-008413","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/62709/000112760223008413/form4.xml","form_type":"4"}},{"id":1982365,"issuer":{"id":1501,"kind":"organization","name":"MARSH & MCLENNAN COMPANIES, INC.","symbol":"MRSH"},"owners":[{"id":1512,"kind":"person","name":"Brennan Katherine","position":1,"cik":"0001917984","reported_name":"Brennan Katherine","relationship":{"officer":true,"officer_title":"SVP and General Counsel"}}],"security":"Common Stock","published_at":"2023-03-02T21:52:33.000Z","date":"2023-02-28","kind":"tax_withholding","acquired":false,"shares":1975,"price":162.83,"value":321589.25,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Vesting and distribution to reporting person of 3,568 shares underlying restricted stock units of which 1,975 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 3,568 shares underlying restricted stock units relate to 561 restricted stock units that were granted on February 19, 2020, 745 restricted stock units that were granted on February 22, 2021, 578 restricted stock units that were granted on February 23, 2022 and 1,684 restricted stock units relating to performance stock units that were granted on February 19, 2020 for the performance period 2020-2022."}],"balance_after":1593,"source":{"system":"sec-edgar","filing":"0001127602-23-008413","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/62709/000112760223008413/form4.xml","form_type":"4"}},{"id":1982364,"issuer":{"id":1501,"kind":"organization","name":"MARSH & MCLENNAN COMPANIES, INC.","symbol":"MRSH"},"owners":[{"id":1512,"kind":"person","name":"Brennan Katherine","position":1,"cik":"0001917984","reported_name":"Brennan Katherine","relationship":{"officer":true,"officer_title":"SVP and General Counsel"}}],"security":"Common Stock","published_at":"2023-03-02T21:52:33.000Z","date":"2023-02-28","kind":"exercise","acquired":true,"shares":3568,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Vesting and distribution to reporting person of 3,568 shares underlying restricted stock units of which 1,975 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 3,568 shares underlying restricted stock units relate to 561 restricted stock units that were granted on February 19, 2020, 745 restricted stock units that were granted on February 22, 2021, 578 restricted stock units that were granted on February 23, 2022 and 1,684 restricted stock units relating to performance stock units that were granted on February 19, 2020 for the performance period 2020-2022."}],"balance_after":3568,"source":{"system":"sec-edgar","filing":"0001127602-23-008413","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/62709/000112760223008413/form4.xml","form_type":"4"}},{"id":1991982,"issuer":{"id":1501,"kind":"organization","name":"MARSH & MCLENNAN COMPANIES, INC.","symbol":"MRSH"},"owners":[{"id":1512,"kind":"person","name":"Brennan Katherine","position":1,"cik":"0001917984","reported_name":"Brennan Katherine","relationship":{"officer":true,"officer_title":"SVP and General Counsel"}}],"security":"Restricted Stock Units","published_at":"2023-02-27T21:22:53.000Z","date":"2023-02-23","kind":"grant","acquired":true,"shares":1684,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis."},{"field":"kind","element":"transactionCoding","label":"F3","text":"These restricted stock units relate to performance stock units that were granted on February 19, 2020 for the performance period 2020-2022. The performance factor for these performance stock units was determined on February 23, 2023."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Not Applicable"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Not Applicable"}],"balance_after":5470,"derivative":{"underlying":"Common Stock","underlying_shares":1684},"source":{"system":"sec-edgar","filing":"0001127602-23-007317","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/62709/000112760223007317/form4.xml","form_type":"4"}},{"id":1991981,"issuer":{"id":1501,"kind":"organization","name":"MARSH & MCLENNAN COMPANIES, INC.","symbol":"MRSH"},"owners":[{"id":1512,"kind":"person","name":"Brennan Katherine","position":1,"cik":"0001917984","reported_name":"Brennan Katherine","relationship":{"officer":true,"officer_title":"SVP and General Counsel"}}],"security":"Stock Options (Right to Buy)","published_at":"2023-02-27T21:22:53.000Z","date":"2023-02-23","kind":"grant","acquired":true,"shares":15505,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"These options were granted on February 23, 2023 and vest in four equal annual installments on February 23rd of 2024, 2025, 2026 and 2027."}],"balance_after":15505,"derivative":{"exercise_price":164.145,"expiration_date":"2033-02-22","underlying":"Common Stock","underlying_shares":15505},"source":{"system":"sec-edgar","filing":"0001127602-23-007317","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/62709/000112760223007317/form4.xml","form_type":"4"}}]}