Keros Therapeutics, Inc. SEC filings KROS
Keros Therapeutics, Inc. has 536 filings in SEC EDGAR's recent list, going back to Apr 29, 2016. Its latest annual report, Form ARS, was filed on Apr 22, 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 (regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 27, 2026 | — |
| 4 | Insider transaction | Aug 20, 2026 | Aug 18, 2026 |
| 4 | Insider transaction | Aug 20, 2026 | Aug 18, 2026 |
| 4 | Insider transaction | Aug 20, 2026 | Aug 18, 2026 |
| 4 | Insider transaction | Aug 20, 2026 | Aug 18, 2026 |
| 4 | Insider transaction | Aug 19, 2026 | Aug 17, 2026 |
| 144 | Notice of proposed sale | Aug 18, 2026 | — |
| 3 | Initial insider ownership | Aug 13, 2026 | Aug 4, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 29, 2026 | — |
| 4 | Insider transaction | Jul 17, 2026 | Jul 15, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 17, 2026 | — |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 3 | Initial insider ownership | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 11, 2026 |
| 144 | Notice of proposed sale | Jun 11, 2026 | — |
| 4 | Insider transaction | Jun 8, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 144 | Notice of proposed sale | Jun 4, 2026 | — |
| 144 | Notice of proposed sale | Jun 4, 2026 | — |
| 144 | Notice of proposed sale | Jun 4, 2026 | — |
| 4 | Insider transaction | May 19, 2026 | May 15, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2026 | — |
| 4 | Insider transaction | Apr 17, 2026 | Apr 15, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 7, 2026 | — |
| 4 | Insider transaction | Apr 6, 2026 | Apr 2, 2026 |
| 144 | Notice of proposed sale | Mar 31, 2026 | — |
| 4/A | Filing | Mar 27, 2026 | Feb 24, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Mar 11, 2026 | Mar 9, 2026 |
| 3 | Initial insider ownership | Mar 11, 2026 | Mar 9, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 9, 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 | Jan 5, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 19, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 30, 2026 | — |
| 4 | Insider transaction | Jan 9, 2026 | Jan 7, 2026 |
| 4 | Insider transaction | Dec 18, 2025 | Nov 21, 2025 |
| 4 | Insider transaction | Dec 18, 2025 | Nov 21, 2025 |
| 4 | Insider transaction | Dec 18, 2025 | Nov 21, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 18, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 27, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 22, 2025 | — |
| 4 | Insider transaction | Oct 17, 2025 | Oct 15, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Oct 16, 2025 | — |
| 4 | Insider transaction | Oct 15, 2025 | Oct 15, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Oct 15, 2025 | — |
| 144 | Notice of proposed sale | Sep 12, 2025 | — |
| 4 | Insider transaction | Sep 5, 2025 | Sep 3, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 21, 2025 | — |
| 3 | Initial insider ownership | Aug 15, 2025 | Aug 6, 2025 |
| 3 | Initial insider ownership | Aug 15, 2025 | Aug 6, 2025 |
| 4 | Insider transaction | Jun 24, 2025 | Jun 20, 2025 |
| 4 | Insider transaction | Jun 12, 2025 | May 16, 2025 |
| 4/A | Filing | Jun 11, 2025 | Jun 4, 2025 |
| 4/A | Filing | Jun 11, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 6, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 6, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 6, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 6, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 6, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 6, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 6, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 6, 2025 | Jun 4, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 14, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | May 12, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | May 8, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 5, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 2, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 28, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 18, 2025 | — |
| 4 | Insider transaction | Apr 11, 2025 | Apr 9, 2025 |
| 3 | Initial insider ownership | Apr 11, 2025 | Apr 8, 2025 |
| SCHEDULE 13D | Ownership over 5% (active) | Apr 11, 2025 | — |
| 4 | Insider transaction | Apr 7, 2025 | Apr 4, 2025 |
| 4 | Insider transaction | Feb 19, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 19, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 19, 2025 | Feb 18, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 7, 2025 | — |
| 4/A | Filing | Jan 24, 2025 | Jan 4, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 3 | Initial insider ownership | Nov 8, 2024 | Nov 1, 2024 |
| 4 | Insider transaction | Aug 15, 2024 | Aug 13, 2024 |
| 4 | Insider transaction | Aug 15, 2024 | Aug 13, 2024 |
| 144 | Notice of proposed sale | Aug 13, 2024 | — |
| 144 | Notice of proposed sale | Aug 13, 2024 | — |
| 4 | Insider transaction | Jun 5, 2024 | Jun 3, 2024 |
| 3 | Initial insider ownership | Jun 5, 2024 | Jun 1, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 30, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 30, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 30, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 30, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 30, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 30, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 30, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 23, 2024 |
| 4 | Insider transaction | Feb 15, 2024 | Feb 13, 2024 |
| 4 | Insider transaction | Feb 15, 2024 | Feb 13, 2024 |
| 4 | Insider transaction | Feb 15, 2024 | Feb 13, 2024 |
| 4 | Insider transaction | Feb 15, 2024 | Feb 13, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 26, 2024 | — |
| 4 | Insider transaction | Jan 8, 2024 | Nov 4, 2023 |
| 144 | Notice of proposed sale | Jan 4, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Dec 13, 2023 | — |
| 144 | Notice of proposed sale | Dec 11, 2023 | — |
| 144 | Notice of proposed sale | Jun 12, 2023 | — |
| 4 | Insider transaction | Jun 12, 2023 | Jun 8, 2023 |
| 144 | Notice of proposed sale | Jun 9, 2023 | — |
| 4 | Insider transaction | Jun 8, 2023 | Jun 6, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 6, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 6, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 6, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 6, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 6, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 6, 2023 |
| 144 | Notice of proposed sale | Jun 8, 2023 | — |
| 4 | Insider transaction | May 3, 2023 | May 1, 2023 |
| 3 | Initial insider ownership | May 3, 2023 | May 1, 2023 |
| 4 | Insider transaction | Apr 11, 2023 | Apr 8, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 16, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 2, 2023 | — |
| 4 | Insider transaction | Jan 20, 2023 | Apr 13, 2020 |
| 4 | Insider transaction | Nov 30, 2022 | Nov 29, 2022 |
| 4 | Insider transaction | Nov 30, 2022 | Nov 29, 2022 |
| 4 | Insider transaction | Nov 30, 2022 | Nov 29, 2022 |
| 3/A | Form 3/a submission | Nov 30, 2022 | Apr 7, 2020 |
| 3/A | Form 3/a submission | Nov 30, 2022 | Apr 7, 2020 |
| 3/A | Form 3/a submission | Nov 30, 2022 | Apr 7, 2020 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 7, 2022 | — |
| 4 | Insider transaction | Jul 19, 2022 | Jul 15, 2022 |
| 4 | Insider transaction | Jul 15, 2022 | Jul 13, 2022 |
| 4 | Insider transaction | Jun 14, 2022 | Jun 14, 2022 |
| 4 | Insider transaction | Jun 10, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | Jun 3, 2022 | Jun 1, 2022 |
| 4 | Insider transaction | Jun 3, 2022 | Jun 1, 2022 |
| 4 | Insider transaction | Jun 3, 2022 | Jun 1, 2022 |
| 4 | Insider transaction | Jun 3, 2022 | Jun 1, 2022 |
| 4 | Insider transaction | Jun 3, 2022 | Jun 1, 2022 |
| 4 | Insider transaction | Jun 3, 2022 | Jun 1, 2022 |
| 4 | Insider transaction | May 13, 2022 | May 11, 2022 |
| 4 | Insider transaction | Apr 13, 2022 | Apr 11, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Apr 12, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Apr 11, 2022 | — |
| 4 | Insider transaction | Apr 8, 2022 | Apr 6, 2022 |
| 4 | Insider transaction | Apr 6, 2022 | Apr 4, 2022 |
| 4 | Insider transaction | Apr 5, 2022 | Apr 1, 2022 |
| 4 | Insider transaction | Mar 15, 2022 | Mar 11, 2022 |
| 4 | Insider transaction | Feb 15, 2022 | Feb 11, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2022 | — |
| 4 | Insider transaction | Feb 3, 2022 | Feb 1, 2022 |
| 3 | Initial insider ownership | Feb 3, 2022 | Feb 1, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 3, 2022 | — |
| 4 | Insider transaction | Jan 25, 2022 | Jan 21, 2022 |
| 4 | Insider transaction | Jan 25, 2022 | Jan 21, 2022 |
| 4 | Insider transaction | Jan 25, 2022 | Jan 21, 2022 |
| 4 | Insider transaction | Jan 25, 2022 | Jan 21, 2022 |
| 4 | Insider transaction | Jan 13, 2022 | Jan 11, 2022 |
| 4 | Insider transaction | Jan 7, 2022 | Jan 5, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 3, 2022 |
| SC 13G | Ownership over 5% (passive) | Dec 30, 2021 | — |
| 4 | Insider transaction | Dec 15, 2021 | Dec 13, 2021 |
| 4 | Insider transaction | Dec 3, 2021 | Dec 1, 2021 |
| 4 | Insider transaction | Nov 12, 2021 | Nov 10, 2021 |
| 4 | Insider transaction | Nov 5, 2021 | Nov 4, 2021 |
| 4 | Insider transaction | Nov 3, 2021 | Nov 1, 2021 |
| 4 | Insider transaction | Oct 21, 2021 | Oct 19, 2021 |
| 4 | Insider transaction | Oct 18, 2021 | Oct 14, 2021 |
| 4 | Insider transaction | Oct 5, 2021 | Oct 1, 2021 |
| 4 | Insider transaction | Sep 29, 2021 | Sep 27, 2021 |
| 4 | Insider transaction | Aug 18, 2021 | Aug 17, 2021 |
| 4 | Insider transaction | Aug 11, 2021 | Aug 10, 2021 |
| 3 | Initial insider ownership | Aug 11, 2021 | Aug 2, 2021 |
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
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- KROS (Nasdaq)
- Fiscal year ends
- December 31
- Headquarters
- Lexington, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1664710
Other Pharmaceutical Preparations companies
- ELI LILLY & Co LLY
- Johnson & Johnson JNJ
- AbbVie Inc. ABBV
- Merck & Co., Inc. MRK
- Novartis AG NVS
- Astrazeneca PLC AZN
- Abbott Laboratories ABT
- Novo Nordisk A S NVO
Source: SEC EDGAR filings. This is company-reported data, not investment advice.