Key facts
- Madison Avenue Partners, LP filed SCHEDULE 13G/A for Keros Therapeutics, Inc. Common Stock, $0.0001 par value per share (the "Common Stock") (KROS).
- Disclosed ownership: 2.7%.
- Date of event: 31 Dec 2025.
Madison Avenue Partners, LP - 31 Dec 2025 SCHEDULE 13G/A Report for Keros Therapeutics, Inc. Common Stock, $0.0001 par value per share (the "Common Stock") (KROS)
- Filing Manager
- Madison Avenue Partners, LP
- Reporting Manager
- Madison Avenue International LP
- Symbol
- KROS
- Shares outstanding
- 30,507,667 shares
- Disclosed Ownership
- 823,707 shares
- Ownership
- 2.7%
- Form type
- SCHEDULE 13G/A
- Filing time
- 17 Feb 2026, 16:52:19 UTC
- Date of event
- 31 Dec 2025
- Previous filing
- 14 May 2025
- SEC
- View on sec.gov
Key filing fact
Madison Avenue Partners, LP disclosed 2.7% ownership in Keros Therapeutics, Inc. Common Stock, $0.0001 par value per share (the "Common Stock") (KROS) on 31 Dec 2025.
Change
- Previous schedule filing date: 14 May 2025.
- Current filing was accepted on 17 Feb 2026, 16:52.
Research use
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Reporting managers (6)
Names, ownership, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Madison Avenue International LP | 2.7% | 823,707 | 0 | 823,707 | /s/ Eli Samaha | Eli Samaha, as Manager of Madison Avenue GP, LLC, the General Partner of Madison Avenue International LP | |
| Madison Avenue Partners, LP | 2.7% | 823,707 | 0 | 823,707 | /s/ Eli Samaha | Eli Samaha, as Managing Member of EMAI Management, LLC, the General Partner of Madison Avenue Partners, LP | |
| EMAI Management, LLC | 2.7% | 823,707 | 0 | 823,707 | /s/ Eli Samaha | Eli Samaha, as Managing Member | |
| Madison Avenue GP, LLC | 2.7% | 823,707 | 0 | 823,707 | /s/ Eli Samaha | Eli Samaha, as Manager | |
| Caraway Jackson Investments LLC | 2.7% | 823,707 | 0 | 823,707 | /s/ Eli Samaha | Eli Samaha, as Member | |
| Eli Samaha | 2.7% | 823,707 | 0 | 823,707 | /s/ Eli Samaha | ELI SAMAHA |
CIK / CUSIP context first