Merck & Co., Inc. SEC filings MRK
Merck & Co., Inc. has 1,007 filings in SEC EDGAR's recent list, going back to May 29, 2018. Its latest annual report, Form ARS, was filed on Apr 8, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 4, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 29, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 4, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Nov 3, 2026 | Nov 1, 2026 |
| 3 | Initial insider ownership | Nov 3, 2026 | Nov 1, 2026 |
| 144 | Notice of proposed sale | Nov 2, 2026 | — |
| 8-K |
Current report
Results of operations
|
Oct 29, 2026 | Oct 29, 2026 |
| 3/A | Primary document | Oct 22, 2026 | May 1, 2026 |
| 25-NSE | Delisting notice | Oct 15, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Oct 13, 2026 | Oct 9, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 3 | Initial insider ownership | Sep 1, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Aug 13, 2026 | Aug 13, 2026 |
| 144 | Notice of proposed sale | Aug 13, 2026 | — |
| 4 | Insider transaction | Aug 13, 2026 | Aug 12, 2026 |
| 144 | Notice of proposed sale | Aug 12, 2026 | — |
| 144 | Notice of proposed sale | Aug 12, 2026 | — |
| 4 | Insider transaction | Aug 12, 2026 | Aug 10, 2026 |
| 144 | Notice of proposed sale | Aug 11, 2026 | — |
| 144 | Notice of proposed sale | Aug 10, 2026 | — |
| 4 | Insider transaction | Aug 10, 2026 | Aug 6, 2026 |
| 4 | Insider transaction | Aug 7, 2026 | Aug 5, 2026 |
| 4 | Insider transaction | Aug 7, 2026 | Aug 5, 2026 |
| 4 | Insider transaction | Aug 7, 2026 | Aug 6, 2026 |
| 10-Q | Quarterly report | Aug 7, 2026 | Jun 30, 2026 |
| 13F-HR | Filing | Aug 7, 2026 | Jun 30, 2026 |
| 144 | Notice of proposed sale | Aug 6, 2026 | — |
| 144 | Notice of proposed sale | Aug 6, 2026 | — |
| 144 | Notice of proposed sale | Aug 5, 2026 | — |
| 144 | Notice of proposed sale | Aug 5, 2026 | — |
| 8-K |
Current report
Results of operations
|
Aug 4, 2026 | Aug 4, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jun 30, 2026 |
| 11-K | Employee savings plan report | Jun 24, 2026 | Dec 31, 2025 |
| 11-K | Employee savings plan report | Jun 24, 2026 | Dec 31, 2025 |
| 11-K | Employee savings plan report | Jun 24, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
May 28, 2026 | May 26, 2026 |
| 8-K |
Current report
Other events
|
May 22, 2026 | May 22, 2026 |
| 424B5 | Prospectus supplement | May 20, 2026 | — |
| FWP | Free writing prospectus | May 19, 2026 | — |
| 424B5 | Prospectus supplement | May 18, 2026 | — |
| 13F-HR | Filing | May 13, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 5, 2026 | May 2, 2026 |
| 4 | Insider transaction | May 5, 2026 | May 2, 2026 |
| 3/A | Primary document | May 5, 2026 | May 1, 2026 |
| SC TO-T/A | Filing | May 5, 2026 | — |
| 3 | Initial insider ownership | May 4, 2026 | May 1, 2026 |
| 10-Q | Quarterly report | May 4, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 29, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2026 | — |
| 8-K |
Current report
Results of operations
|
Apr 30, 2026 | Apr 30, 2026 |
| SC TO-T/A | Filing | Apr 24, 2026 | — |
| ARS | Annual report to shareholders | Apr 8, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 8, 2026 | — |
| DEF 14A | Proxy statement | Apr 8, 2026 | May 26, 2026 |
| SC TO-T | Filing | Apr 7, 2026 | — |
| 4 | Insider transaction | Apr 1, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Apr 1, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Apr 1, 2026 | Mar 31, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 3 | Initial insider ownership | Mar 12, 2026 | Mar 2, 2026 |
| 10-K | Annual report | Feb 24, 2026 | Dec 31, 2025 |
| 13F-HR | Filing | Feb 17, 2026 | Dec 31, 2025 |
| 144/A | Filing | Feb 13, 2026 | — |
| 4 | Insider transaction | Feb 12, 2026 | Feb 12, 2026 |
| 144 | Notice of proposed sale | Feb 10, 2026 | — |
| 4 | Insider transaction | Feb 10, 2026 | Feb 10, 2026 |
| 144 | Notice of proposed sale | Feb 9, 2026 | — |
| 144 | Notice of proposed sale | Feb 9, 2026 | — |
| 4 | Insider transaction | Feb 9, 2026 | Feb 9, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 9, 2026 |
| 144 | Notice of proposed sale | Feb 6, 2026 | — |
| 144 | Notice of proposed sale | Feb 6, 2026 | — |
| 4 | Insider transaction | Feb 6, 2026 | Feb 6, 2026 |
| 144 | Notice of proposed sale | Feb 6, 2026 | — |
| 4 | Insider transaction | Feb 6, 2026 | Feb 4, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 4, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 4, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 4, 2026 |
| 144 | Notice of proposed sale | Feb 5, 2026 | — |
| 144 | Notice of proposed sale | Feb 4, 2026 | — |
| 144 | Notice of proposed sale | Feb 4, 2026 | — |
| 144 | Notice of proposed sale | Feb 4, 2026 | — |
| 144 | Notice of proposed sale | Feb 4, 2026 | — |
| 8-K |
Current report
Results of operations
|
Feb 3, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| SC TO-T/A | Filing | Jan 7, 2026 | — |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| SC TO-T/A | Filing | Dec 19, 2025 | — |
| SC TO-T/A | Filing | Dec 17, 2025 | — |
| SC TO-T | Filing | Dec 5, 2025 | — |
| 8-K |
Current report
Other events
|
Dec 4, 2025 | Dec 4, 2025 |
| 424B5 | Prospectus supplement | Dec 3, 2025 | — |
| FWP | Free writing prospectus | Dec 2, 2025 | — |
| 424B5 | Prospectus supplement | Dec 1, 2025 | — |
| 13F-HR | Filing | Nov 12, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 10, 2025 |
| 144 | Notice of proposed sale | Nov 10, 2025 | — |
| 10-Q | Quarterly report | Nov 5, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Nov 4, 2025 | Nov 3, 2025 |
| 144 | Notice of proposed sale | Nov 3, 2025 | — |
| 8-K |
Current report
Results of operations
|
Oct 30, 2025 | Oct 30, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Other events
|
Sep 9, 2025 | Sep 9, 2025 |
| 424B5 | Prospectus supplement | Sep 4, 2025 | — |
| FWP | Free writing prospectus | Sep 3, 2025 | — |
| 424B5 | Prospectus supplement | Sep 2, 2025 | — |
| 13F-HR | Filing | Aug 13, 2025 | Jun 30, 2025 |
| 10-Q | Quarterly report | Aug 5, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Aug 5, 2025 | Aug 4, 2025 |
| 4 | Insider transaction | Aug 5, 2025 | Aug 4, 2025 |
| 8-K |
Current report
Results of operations, Exit or restructuring costs
|
Jul 29, 2025 | Jul 25, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 11-K | Employee savings plan report | Jun 27, 2025 | Dec 31, 2024 |
| 11-K | Employee savings plan report | Jun 27, 2025 | Dec 31, 2024 |
| 11-K | Employee savings plan report | Jun 27, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
May 29, 2025 | May 27, 2025 |
| 13F-HR | Filing | May 14, 2025 | Mar 31, 2025 |
| PX14A6G | National legal and policy center - px14a6g | May 7, 2025 | — |
| 4 | Insider transaction | May 5, 2025 | May 3, 2025 |
| 4 | Insider transaction | May 2, 2025 | Apr 30, 2025 |
| 4 | Insider transaction | May 2, 2025 | Apr 30, 2025 |
| 4 | Insider transaction | May 2, 2025 | Apr 30, 2025 |
| 4/A | Primary document | May 2, 2025 | Apr 29, 2025 |
| 10-Q | Quarterly report | May 2, 2025 | Mar 31, 2025 |
| 4/A | Primary document | May 2, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | May 1, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | May 1, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | May 1, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | May 1, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | May 1, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | May 1, 2025 | Apr 29, 2025 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- MRK (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- NJ
- Headquarters
- Rahway, NJ
- SEC filer status
- Large accelerated filer
- SEC CIK
- 310158
- Former names
- Merck & Co. Inc. (until Dec 9, 2014); SCHERING PLOUGH CORP (until Oct 29, 2009)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.