Lantheus Holdings, Inc. SEC filings LNTH
Lantheus Holdings, Inc. has 1,003 filings in SEC EDGAR's recent list, going back to Aug 5, 2016. Its latest annual report, Form ARS, was filed on Mar 20, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 30, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 23, 2026 | — |
| 4 | Insider transaction | Sep 8, 2026 | Sep 3, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 4, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 4, 2026 | — |
| SCHEDULE 13D | Ownership over 5% (active) | Sep 4, 2026 | — |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 2, 2026 | Aug 31, 2026 |
| 4 | Insider transaction | Sep 2, 2026 | Aug 31, 2026 |
| 4 | Insider transaction | Aug 19, 2026 | Aug 17, 2026 |
| 4 | Insider transaction | Aug 19, 2026 | Aug 17, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 31, 2026 | — |
| 4 | Insider transaction | Jun 3, 2026 | May 14, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2026 | — |
| 4 | Insider transaction | Apr 21, 2026 | Apr 17, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2026 | — |
| 144 | Notice of proposed sale | Feb 2, 2026 | — |
| 144 | Notice of proposed sale | Jan 6, 2026 | — |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2024 |
| 144 | Notice of proposed sale | Dec 12, 2025 | — |
| 144 | Notice of proposed sale | Nov 26, 2025 | — |
| 4 | Insider transaction | Nov 19, 2025 | Nov 17, 2025 |
| 144 | Notice of proposed sale | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 12, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 7, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2025 | — |
| 4 | Insider transaction | Sep 3, 2025 | Aug 29, 2025 |
| 4 | Insider transaction | Aug 21, 2025 | Aug 19, 2025 |
| 4 | Insider transaction | Aug 21, 2025 | Aug 19, 2025 |
| 4 | Insider transaction | Aug 19, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 19, 2025 | Aug 15, 2025 |
| 3 | Initial insider ownership | Aug 18, 2025 | Aug 1, 2025 |
| 3 | Initial insider ownership | Aug 18, 2025 | Aug 6, 2025 |
| 3 | Initial insider ownership | Aug 18, 2025 | Aug 6, 2025 |
| 4 | Insider transaction | Aug 15, 2025 | Aug 13, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 144 | Notice of proposed sale | Aug 13, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 6, 2025 | — |
| 4 | Insider transaction | Jul 17, 2025 | Jul 15, 2025 |
| 4 | Insider transaction | Jun 17, 2025 | Jun 13, 2025 |
| 144 | Notice of proposed sale | Jun 13, 2025 | — |
| 4 | Insider transaction | Jun 11, 2025 | Jun 9, 2025 |
| 4 | Insider transaction | Jun 11, 2025 | Jun 9, 2025 |
| 4 | Insider transaction | Jun 9, 2025 | Jun 5, 2025 |
| 4 | Insider transaction | Jun 9, 2025 | Jun 5, 2025 |
| 144 | Notice of proposed sale | Jun 9, 2025 | — |
| 144 | Notice of proposed sale | Jun 9, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 6, 2025 | — |
| 144 | Notice of proposed sale | Jun 5, 2025 | — |
| 144 | Notice of proposed sale | Jun 5, 2025 | — |
| 144 | Notice of proposed sale | Jun 5, 2025 | — |
| 4 | Insider transaction | Jun 4, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | May 29, 2025 | May 27, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 14, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 14, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 14, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 14, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 14, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 14, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 14, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 14, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 14, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 14, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2025 | — |
| 4 | Insider transaction | May 13, 2025 | May 9, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 8, 2025 | — |
| 4 | Insider transaction | Apr 21, 2025 | Apr 17, 2025 |
| 4 | Insider transaction | Apr 21, 2025 | Apr 17, 2025 |
| 4 | Insider transaction | Mar 21, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 19, 2025 | Mar 17, 2025 |
| 4 | Insider transaction | Mar 17, 2025 | Jun 7, 2024 |
| 144 | Notice of proposed sale | Mar 17, 2025 | — |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 144 | Notice of proposed sale | Mar 5, 2025 | — |
| 144 | Notice of proposed sale | Feb 28, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 4/A | Amended statement of changes in beneficial ownership of securities | Feb 12, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 11, 2025 | Feb 7, 2025 |
| 3 | Initial insider ownership | Feb 7, 2025 | Feb 1, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2025 | — |
| 4 | Insider transaction | Jan 17, 2025 | Jan 15, 2025 |
| 144 | Notice of proposed sale | Jan 15, 2025 | — |
| 4 | Insider transaction | Dec 23, 2024 | Dec 19, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 144 | Notice of proposed sale | Nov 15, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| 144 | Notice of proposed sale | Nov 14, 2024 | — |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 144 | Notice of proposed sale | Nov 8, 2024 | — |
| 144 | Notice of proposed sale | Oct 15, 2024 | — |
| 144 | Notice of proposed sale | Sep 13, 2024 | — |
| 4 | Insider transaction | Sep 12, 2024 | Sep 10, 2024 |
| 3 | Initial insider ownership | Sep 9, 2024 | Sep 3, 2024 |
| 4 | Insider transaction | Sep 3, 2024 | Aug 29, 2024 |
| 4 | Insider transaction | Aug 23, 2024 | Aug 21, 2024 |
| 144 | Notice of proposed sale | Aug 21, 2024 | — |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 16, 2024 | Aug 14, 2024 |
| 4 | Insider transaction | Aug 14, 2024 | Aug 12, 2024 |
| 144 | Notice of proposed sale | Aug 14, 2024 | — |
| 144 | Notice of proposed sale | Aug 13, 2024 | — |
| 4 | Insider transaction | Aug 12, 2024 | Aug 8, 2024 |
| 3 | Initial insider ownership | Aug 12, 2024 | Aug 1, 2024 |
| 144 | Notice of proposed sale | Aug 12, 2024 | — |
| 144 | Notice of proposed sale | Aug 8, 2024 | — |
| 4 | Insider transaction | Aug 6, 2024 | Aug 2, 2024 |
| 144 | Notice of proposed sale | Aug 2, 2024 | — |
| 4 | Insider transaction | Jul 17, 2024 | Jul 15, 2024 |
| 4 | Insider transaction | Jul 17, 2024 | Jul 15, 2024 |
| 144 | Notice of proposed sale | Jul 16, 2024 | — |
| 144 | Notice of proposed sale | Jul 15, 2024 | — |
| 4 | Insider transaction | Jul 12, 2024 | Jul 10, 2024 |
| 144 | Notice of proposed sale | Jul 10, 2024 | — |
| 4 | Insider transaction | Jun 20, 2024 | Jun 17, 2024 |
| 4 | Insider transaction | Jun 17, 2024 | Jun 13, 2024 |
| 144 | Notice of proposed sale | Jun 13, 2024 | — |
| 3 | Initial insider ownership | Jun 6, 2024 | May 28, 2024 |
| 4 | Insider transaction | Jun 4, 2024 | May 31, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 30, 2024 |
| 144 | Notice of proposed sale | May 31, 2024 | — |
| 4 | Insider transaction | May 30, 2024 | May 28, 2024 |
| 4 | Insider transaction | May 30, 2024 | May 28, 2024 |
| 144 | Notice of proposed sale | May 30, 2024 | — |
| 144 | Notice of proposed sale | May 28, 2024 | — |
| 144 | Notice of proposed sale | May 28, 2024 | — |
| 4 | Insider transaction | May 22, 2024 | May 20, 2024 |
| 4 | Insider transaction | May 21, 2024 | May 17, 2024 |
| 4 | Insider transaction | May 15, 2024 | May 13, 2024 |
| 4 | Insider transaction | May 15, 2024 | May 8, 2023 |
| 4 | Insider transaction | May 13, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 13, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 13, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 13, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 13, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 13, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 13, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 13, 2024 | May 9, 2024 |
| 144 | Notice of proposed sale | May 13, 2024 | — |
| 4 | Insider transaction | Apr 26, 2024 | Apr 17, 2024 |
| 4 | Insider transaction | Apr 19, 2024 | Apr 17, 2024 |
| 4 | Insider transaction | Apr 17, 2024 | Apr 15, 2024 |
| 144 | Notice of proposed sale | Apr 15, 2024 | — |
| 3 | Initial insider ownership | Apr 4, 2024 | Mar 25, 2024 |
| 4 | Insider transaction | Mar 19, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 13, 2024 |
| 144 | Notice of proposed sale | Mar 15, 2024 | — |
| 144 | Notice of proposed sale | Mar 13, 2024 | — |
| 4 | Insider transaction | Mar 11, 2024 | Mar 7, 2024 |
| 4 | Insider transaction | Mar 8, 2024 | Mar 6, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 8, 2024 | — |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 144 | Notice of proposed sale | Mar 7, 2024 | — |
| 4 | Insider transaction | Mar 6, 2024 | Mar 4, 2024 |
| 144 | Notice of proposed sale | Mar 6, 2024 | — |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
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
- In Vitro & In Vivo Diagnostic Substances (SIC 2835)
- Listed as
- LNTH (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Bedford, MA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1521036
- Former names
- Lantheus MI Holdings, Inc. (until May 23, 2014)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.