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 |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2026 | Nov 5, 2026 |
| 8-K |
Current report
Other events
|
Oct 22, 2026 | Oct 21, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Oct 14, 2026 | Oct 14, 2026 |
| DEFA14A | Additional proxy material | Oct 2, 2026 | — |
| 8-K |
Current report
Other events
|
Oct 2, 2026 | Oct 2, 2026 |
| DEFA14A | Additional proxy material | Sep 21, 2026 | — |
| 8-K |
Current report
Other events
|
Sep 21, 2026 | Sep 17, 2026 |
| DEFA14A | Additional proxy material | Sep 17, 2026 | — |
| DEFM14A | Filing | Sep 8, 2026 | — |
| S-8 | Employee stock plan registration | Sep 2, 2026 | — |
| PREM14A | Filing | Aug 26, 2026 | Aug 26, 2026 |
| DEFA14A | Additional proxy material | Aug 13, 2026 | — |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| DEFA14A | Additional proxy material | Aug 4, 2026 | — |
| DEFA14A | Additional proxy material | Aug 4, 2026 | — |
| 8-K |
Current report
Material agreement, Officer or director change
|
Aug 4, 2026 | Aug 1, 2026 |
| DEFA14A | Additional proxy material | Aug 3, 2026 | — |
| DEFA14A | Additional proxy material | Aug 3, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Aug 3, 2026 | Aug 3, 2026 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2026 | — |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 7, 2026 | May 7, 2026 |
| 8-K |
Current report
Change to shareholder rights, Officer or director change, Bylaw or fiscal year change, Shareholder vote results
|
May 1, 2026 | Apr 30, 2026 |
| ARS | Annual report to shareholders | Mar 20, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Mar 20, 2026 | — |
| DEF 14A | Proxy statement | Mar 20, 2026 | Apr 30, 2026 |
| PRE 14A | Preliminary proxy statement | Mar 10, 2026 | Apr 30, 2026 |
| 10-K | Annual report | Feb 26, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 26, 2026 | Feb 26, 2026 |
| 8-K |
Current report
Officer or director change
|
Nov 12, 2025 | Nov 6, 2025 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Officer or director change, Regulation FD disclosure
|
Nov 6, 2025 | Oct 31, 2025 |
| 8-K |
Current report
Officer or director change
|
Aug 11, 2025 | Aug 7, 2025 |
| 10-Q | Quarterly report | Aug 6, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure, Other events
|
Aug 6, 2025 | Aug 6, 2025 |
| 8-K |
Current report
Acquisition or sale of assets, Regulation FD disclosure
|
Jul 22, 2025 | Jul 21, 2025 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 10-Q | Quarterly report | May 7, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 7, 2025 | May 7, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
May 5, 2025 | May 1, 2025 |
| 8-K |
Current report
Acquisition or sale of assets, Regulation FD disclosure
|
Apr 1, 2025 | Apr 1, 2025 |
| ARS | Annual report to shareholders | Mar 21, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Mar 21, 2025 | — |
| DEF 14A | Proxy statement | Mar 21, 2025 | May 1, 2025 |
| 10-K | Annual report | Feb 26, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 26, 2025 | Feb 26, 2025 |
| 8-K |
Current report
Officer or director change
|
Jan 30, 2025 | Jan 29, 2025 |
| 8-K |
Current report
Material agreement, Results of operations, Regulation FD disclosure
|
Jan 28, 2025 | Jan 27, 2025 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Jan 13, 2025 | Jan 12, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Dec 23, 2024 | Dec 19, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 19, 2024 | Dec 19, 2024 |
| 8-K |
Current report
Other events
|
Nov 20, 2024 | Nov 20, 2024 |
| 10-Q | Quarterly report | Nov 6, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2024 | Nov 6, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 25, 2024 | Sep 25, 2024 |
| 8-K |
Current report
Officer or director change
|
Sep 5, 2024 | Sep 3, 2024 |
| S-8 | Employee stock plan registration | Aug 21, 2024 | — |
| 10-Q | Quarterly report | Jul 31, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2024 | Jul 31, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 27, 2024 | Jun 27, 2024 |
| 8-K |
Current report
Officer or director change
|
Jun 24, 2024 | Jun 17, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2024 | — |
| 8-K |
Current report
Officer or director change
|
May 15, 2024 | May 15, 2024 |
| 10-Q | Quarterly report | May 2, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 2, 2024 | May 2, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Apr 29, 2024 | Apr 25, 2024 |
| ARS | Annual report to shareholders | Mar 15, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Mar 15, 2024 | — |
| DEF 14A | Proxy statement | Mar 15, 2024 | Apr 25, 2024 |
| 10-K | Annual report | Feb 22, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 22, 2024 | Feb 22, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 26, 2024 | Jan 26, 2024 |
| 8-K |
Current report
Officer or director change
|
Jan 23, 2024 | Jan 18, 2024 |
| 8-K |
Current report
Results of operations
|
Jan 9, 2024 | Jan 9, 2024 |
| 10-Q | Quarterly report | Nov 2, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Officer or director change
|
Aug 28, 2023 | Aug 22, 2023 |
| 8-K |
Current report
Other events
|
Aug 18, 2023 | Aug 15, 2023 |
| 10-Q | Quarterly report | Aug 3, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure, Other events
|
Aug 3, 2023 | Aug 2, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2023 | — |
| S-8 | Employee stock plan registration | May 16, 2023 | — |
| 8-K |
Current report
Material agreement, New debt
|
May 4, 2023 | May 4, 2023 |
| 10-Q | Quarterly report | May 4, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 4, 2023 | May 4, 2023 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 1, 2023 | Apr 27, 2023 |
| 8-K/A |
Amended current report
Officer or director change
|
Mar 20, 2023 | Mar 17, 2023 |
| 8-K |
Current report
Officer or director change
|
Mar 17, 2023 | Mar 17, 2023 |
| ARS | Annual report to shareholders | Mar 17, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Mar 17, 2023 | — |
| DEF 14A | Proxy statement | Mar 17, 2023 | — |
| 10-K | Annual report | Feb 23, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 23, 2023 | Feb 23, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 6, 2023 | Feb 6, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 11, 2023 | Jan 11, 2023 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Dec 28, 2022 | Dec 27, 2022 |
| 8-K |
Current report
Acquisition or sale of assets, Other events
|
Dec 20, 2022 | Dec 20, 2022 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Other events
|
Dec 8, 2022 | Dec 8, 2022 |
| 8-K |
Current report
Other events
|
Dec 6, 2022 | Dec 6, 2022 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt, Other events
|
Dec 5, 2022 | Dec 2, 2022 |
| 8-K |
Current report
Material agreement, Other events
|
Nov 14, 2022 | Nov 11, 2022 |
| 10-Q | Quarterly report | Nov 3, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2022 | Nov 3, 2022 |
| 10-Q | Quarterly report | Aug 4, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2022 | Aug 4, 2022 |
| 8-K |
Current report
Officer or director change
|
Jun 15, 2022 | Jun 7, 2022 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2022 | — |
| 8-K |
Current report
Regulation FD disclosure
|
May 17, 2022 | May 17, 2022 |
| S-8 | Employee stock plan registration | May 12, 2022 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 2, 2022 | Apr 28, 2022 |
| 10-Q | Quarterly report | Apr 29, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
Apr 29, 2022 | Apr 29, 2022 |
| DEFA14A | Additional proxy material | Mar 18, 2022 | — |
| DEF 14A | Proxy statement | Mar 18, 2022 | Apr 28, 2022 |
| 8-K |
Current report
Officer or director change
|
Mar 1, 2022 | Mar 1, 2022 |
| 10-K | Annual report | Feb 24, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 24, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Dec 27, 2021 | Dec 27, 2021 |
| 10-Q | Quarterly report | Nov 4, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Officer or director change
|
Oct 14, 2021 | Oct 13, 2021 |
| S-8 | Employee stock plan registration | Aug 4, 2021 | — |
| 10-Q | Quarterly report | Jul 28, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2021 | Jul 28, 2021 |
| 8-K |
Current report
Officer or director change
|
Jul 23, 2021 | Jul 19, 2021 |
| SD | Specialized disclosure (conflict minerals) | May 28, 2021 | — |
| 8-K |
Current report
Other events
|
May 27, 2021 | May 27, 2021 |
| 10-Q | Quarterly report | May 4, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 4, 2021 | May 4, 2021 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Apr 29, 2021 | Apr 28, 2021 |
| 8-K |
Current report
Officer or director change
|
Apr 1, 2021 | Mar 31, 2021 |
| DEFA14A | Additional proxy material | Mar 18, 2021 | — |
| DEF 14A | Proxy statement | Mar 18, 2021 | Apr 28, 2021 |
| 8-K |
Current report
Officer or director change
|
Mar 5, 2021 | Feb 28, 2021 |
| 10-K | Annual report | Feb 25, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2021 | Feb 25, 2021 |
| 8-K |
Current report
Other events
|
Feb 1, 2021 | Jan 29, 2021 |
| CT ORDER | Filing | Dec 21, 2020 | — |
| 8-K |
Current report
Other events
|
Dec 9, 2020 | Dec 9, 2020 |
| 8-K |
Current report
Other events
|
Dec 3, 2020 | Dec 3, 2020 |
| 8-K |
Current report
Other events
|
Nov 18, 2020 | Nov 18, 2020 |
| 10-Q | Quarterly report | Nov 5, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2020 | Nov 5, 2020 |
| 8-K |
Current report
Other events
|
Oct 5, 2020 | Sep 28, 2020 |
| 8-K |
Current report
Other events
|
Sep 30, 2020 | Sep 30, 2020 |
| 10-Q | Quarterly report | Jul 31, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2020 | Jul 30, 2020 |
| S-8 | Employee stock plan registration | Jun 26, 2020 | — |
| 8-K |
Current report
Material agreement
|
Jun 22, 2020 | Jun 19, 2020 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Officer or director change, Other events
|
Jun 22, 2020 | Jun 19, 2020 |
| 8-K |
Current report
Shareholder vote results, Other events
|
Jun 16, 2020 | Jun 16, 2020 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2020 | — |
| 424B3 | Prospectus | May 14, 2020 | — |
| 425 | Filing | May 12, 2020 | — |
| 10-Q | Quarterly report | Apr 30, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2020 | Apr 30, 2020 |
| 8-K |
Current report
Shareholder vote results
|
Apr 24, 2020 | Apr 23, 2020 |
| CT ORDER | Filing | Apr 14, 2020 | — |
| 8-K |
Current report
Material agreement, Other events
|
Apr 14, 2020 | Apr 14, 2020 |
| 425 | 8-k | Apr 14, 2020 | — |
| 8-K |
Current report
Officer or director change
|
Apr 10, 2020 | Apr 9, 2020 |
| 8-K |
Current report
Results of operations
|
Apr 9, 2020 | Apr 9, 2020 |
| DEFA14A | Additional proxy material | Apr 6, 2020 | — |
| 8-K |
Current report
Other events
|
Apr 2, 2020 | Apr 2, 2020 |
| 425 | 8-k | Apr 2, 2020 | — |
| 424B3 | Prospectus | Mar 19, 2020 | — |
| EFFECT | Filing | Mar 18, 2020 | — |
| CORRESP | Letter to the SEC | Mar 16, 2020 | — |
| S-4/A | Filing | Mar 16, 2020 | — |
| DEFA14A | Additional proxy material | Mar 12, 2020 | — |
| DEF 14A | Proxy statement | Mar 12, 2020 | Apr 23, 2020 |
| 425 | Filing | Feb 27, 2020 | — |
| 425 | Filing | Feb 26, 2020 | — |
| 10-K | Annual report | Feb 25, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2020 | Feb 25, 2020 |
| 425 | Filing | Feb 21, 2020 | — |
| 8-K |
Current report
Material agreement
|
Feb 20, 2020 | Feb 20, 2020 |
| 425 | 8-k | Feb 20, 2020 | — |
| 8-K |
Current report
Other events
|
Feb 20, 2020 | Feb 20, 2020 |
| 425 | 8-k | Feb 20, 2020 | — |
| 8-K |
Current report
Other events
|
Feb 3, 2020 | Feb 3, 2020 |
| 8-K |
Current report
Other events
|
Jan 27, 2020 | Jan 27, 2020 |
| 8-K |
Current report
Other events
|
Jan 13, 2020 | Jan 6, 2020 |
| 425 | Filing | Jan 10, 2020 | — |
| 425 | Filing | Jan 8, 2020 | — |
| CT ORDER | Filing | Dec 27, 2019 | — |
| UPLOAD | Letter from the SEC | Nov 20, 2019 | — |
| 425 | Filing | Nov 13, 2019 | — |
| S-4 | Registration for a merger or exchange | Nov 12, 2019 | — |
| 425 | Filing | Nov 7, 2019 | — |
| 8-K |
Current report
Other events
|
Nov 7, 2019 | Nov 7, 2019 |
| 425 | 8-k | Nov 7, 2019 | — |
| 8-K |
Current report
Material agreement
|
Nov 5, 2019 | Oct 31, 2019 |
| 425 | Filing | Nov 1, 2019 | — |
| 10-Q | Quarterly report | Oct 31, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2019 | Oct 31, 2019 |
| 425 | Filing | Oct 23, 2019 | — |
| 425 | Filing | Oct 4, 2019 | — |
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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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)
Other In Vitro & In Vivo Diagnostic Substances companies
- Idexx Laboratories Inc /DE IDXX
- Neogen Corp NEOG
- Celldex Therapeutics, Inc. CLDX
- Intellia Therapeutics, Inc. NTLA
- QuidelOrtho Corp QDEL
- Achieve Life Sciences, Inc. ACHV
- Myriad Genetics Inc MYGN
- Alpha Teknova, Inc. TKNO
Source: SEC EDGAR filings. This is company-reported data, not investment advice.