Marsh & Mclennan Companies, Inc. SEC filings MRSH
Marsh & Mclennan Companies, Inc. has 1,006 filings in SEC EDGAR's recent list, going back to Mar 7, 2018. Its latest annual report, Form ARS, was filed on Mar 31, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 15, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 27, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 144 | Notice of proposed sale | Nov 5, 2026 | — |
| 4 | Insider transaction | Nov 4, 2026 | Nov 2, 2026 |
| CERT | Nyse certification | Oct 28, 2026 | — |
| 8-A12B | Filing | Oct 27, 2026 | — |
| 8-K |
Current report
Other events
|
Oct 27, 2026 | Oct 27, 2026 |
| 4 | Insider transaction | Oct 26, 2026 | Oct 23, 2026 |
| 4 | Insider transaction | Oct 26, 2026 | Oct 23, 2026 |
| 144 | Notice of proposed sale | Oct 23, 2026 | — |
| 144 | Notice of proposed sale | Oct 23, 2026 | — |
| 424B2 | Prospectus | Oct 22, 2026 | — |
| FWP | Free writing prospectus | Oct 20, 2026 | — |
| 424B2 | Prospectus | Oct 19, 2026 | — |
| 10-Q | Quarterly report | Oct 15, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 15, 2026 | Oct 15, 2026 |
| 25-NSE | Delisting notice | Sep 21, 2026 | — |
| 4 | Insider transaction | Sep 3, 2026 | Sep 2, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 2, 2026 |
| 144 | Notice of proposed sale | Sep 2, 2026 | — |
| 144 | Notice of proposed sale | Sep 2, 2026 | — |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 7, 2026 | Aug 6, 2026 |
| 144 | Notice of proposed sale | Aug 6, 2026 | — |
| 4 | Insider transaction | Jul 31, 2026 | Jul 29, 2026 |
| 4 | Insider transaction | Jul 29, 2026 | Jul 28, 2026 |
| 144 | Notice of proposed sale | Jul 29, 2026 | — |
| 144 | Notice of proposed sale | Jul 28, 2026 | — |
| 4 | Insider transaction | Jul 24, 2026 | Jul 23, 2026 |
| 144 | Notice of proposed sale | Jul 23, 2026 | — |
| 10-Q | Quarterly report | Jul 21, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 21, 2026 | Jul 21, 2026 |
| 11-K | Employee savings plan report | Jun 22, 2026 | Dec 31, 2025 |
| 11-K | Employee savings plan report | Jun 22, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Material agreement, Agreement ended
|
Jun 4, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 144 | Notice of proposed sale | Jun 2, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
May 22, 2026 | May 21, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2026 | — |
| 10-Q | Quarterly report | Apr 16, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 16, 2026 | Apr 16, 2026 |
| 8-K |
Current report
Officer or director change
|
Apr 14, 2026 | Apr 8, 2026 |
| 3 | Initial insider ownership | Apr 10, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Apr 1, 2026 |
| ARS | Annual report to shareholders | Mar 31, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Mar 31, 2026 | — |
| DEF 14A | Proxy statement | Mar 31, 2026 | May 21, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 12, 2026 | Mar 11, 2026 |
| 144 | Notice of proposed sale | Mar 11, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Mar 10, 2026 | Mar 10, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 3, 2026 |
| 144 | Notice of proposed sale | Mar 4, 2026 | — |
| 3 | Initial insider ownership | Mar 3, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 28, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 28, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 28, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 28, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 28, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 28, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 28, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 28, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 28, 2026 |
| 144 | Notice of proposed sale | Mar 3, 2026 | — |
| 4 | Insider transaction | Mar 3, 2026 | Feb 28, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 28, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 8-K |
Current report
Officer or director change
|
Feb 25, 2026 | Feb 25, 2026 |
| 8-K |
Current report
Other events
|
Feb 19, 2026 | Feb 19, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 424B2 | Prospectus | Feb 13, 2026 | — |
| FWP | Free writing prospectus | Feb 11, 2026 | — |
| 424B2 | Prospectus | Feb 11, 2026 | — |
| S-8 | Employee stock plan registration | Feb 10, 2026 | — |
| 10-K | Annual report | Feb 9, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Jan 29, 2026 | Jan 29, 2026 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jan 14, 2026 | Jan 14, 2026 |
| 4 | Insider transaction | Dec 2, 2025 | Dec 1, 2025 |
| 144 | Notice of proposed sale | Dec 1, 2025 | — |
| 4 | Insider transaction | Nov 18, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 15, 2025 |
| 10-Q | Quarterly report | Oct 16, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 16, 2025 | Oct 16, 2025 |
| 4 | Insider transaction | Sep 3, 2025 | Sep 2, 2025 |
| 144 | Notice of proposed sale | Sep 2, 2025 | — |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 29, 2025 |
| 10-Q | Quarterly report | Jul 17, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 17, 2025 | Jul 17, 2025 |
| 3 | Initial insider ownership | Jul 14, 2025 | Jul 9, 2025 |
| 8-K |
Current report
Officer or director change
|
Jul 9, 2025 | Jul 9, 2025 |
| 11-K | Employee savings plan report | Jun 24, 2025 | Dec 31, 2024 |
| 11-K | Employee savings plan report | Jun 24, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 144 | Notice of proposed sale | Jun 2, 2025 | — |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 8-K |
Current report
Shareholder vote results
|
May 19, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 15, 2025 |
| 10-Q | Quarterly report | Apr 17, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 17, 2025 | Apr 17, 2025 |
| PX14A6G | Filing | Apr 9, 2025 | — |
| 4 | Insider transaction | Apr 7, 2025 | Apr 3, 2025 |
| 144 | Notice of proposed sale | Apr 3, 2025 | — |
| 4 | Insider transaction | Apr 1, 2025 | Mar 31, 2025 |
| 144 | Notice of proposed sale | Mar 31, 2025 | — |
| ARS | Annual report to shareholders | Mar 28, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Mar 28, 2025 | — |
| DEF 14A | Proxy statement | Mar 28, 2025 | May 15, 2025 |
| 4/A | Primary document | Mar 25, 2025 | Aug 14, 2024 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 17, 2025 |
| 4 | Insider transaction | Mar 14, 2025 | Mar 12, 2025 |
| 144 | Notice of proposed sale | Mar 12, 2025 | — |
| 4 | Insider transaction | Mar 11, 2025 | Mar 10, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 10, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 10, 2025 |
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Company profile
- Industry
- Insurance Agents, Brokers & Service (SIC 6411)
- Listed as
- MRSH (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- New York, NY
- SEC filer status
- Large accelerated filer
- SEC CIK
- 62709
- Former names
- MARSH & MCLENNAN COMPANIES INC (until Jan 31, 2005)
Other Insurance Agents, Brokers & Service companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.