Keros Therapeutics Inc

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Keros Therapeutics Inc
TickerKROS
CIK #0001664710
CUSIP492327101
SectorLife Sciences - Pharmaceutical Preparations
Address99 Hayden Avenue, Suite 120 (Bld E) Ledgemont Technology Center, Lexington, MA 02421
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Keros Therapeutics Inc 2020-03-12 56.0 M Exemption: 506(b) · Duration: One year or less · Revenue: Decline to Disclose
CIK Filing 2011 - 2026
[0001664710] 10-K
[0001664710] 10-Q
[0001664710] 3
[0001664710] 4
[0001664710] 8-K
[0001664710] D
[0001664710] SC 13D
[0001664710] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
BlackRock Portfolio Management LLC Keros Therapeutics Inc [2026-07-17] 0.0
Nantahala Capital Management LLC Keros Therapeutics Inc [2026-05-15] 0.0
BlackRock Inc Keros Therapeutics Inc [2026-04-07] 0.0
ExodusPoint Capital Management LP Keros Therapeutics Inc [2025-11-18] 0.0
D E Shaw & Co LP Keros Therapeutics Inc [2025-10-27] 0.0
Tang Capital Management LLC Keros Therapeutics Inc [2025-10-22] 0.0
Madison Avenue Partners LP Keros Therapeutics Inc [2025-05-14] 0.0
JPMorgan Chase & Co Keros Therapeutics Inc [2025-05-02] 0.0
Vanguard Group Inc Keros Therapeutics Inc [2025-04-30] 0.0
ADAR1 Capital Management LLC Keros Therapeutics Inc [2025-04-11] 0.0
Alkeon Capital Management LLC Keros Therapeutics Inc [2025-02-14] 0.0
Arkin Moshe Keros Therapeutics Inc [2022-04-11] 7.55
Deep Track Capital LP Keros Therapeutics Inc [2021-12-30] 5.45
RA Capital Management LP Keros Therapeutics Inc [2021-02-10] 8.1
BlackRock Inc Keros Therapeutics Inc [2021-02-02] 5.2
FMR LLC Keros Therapeutics Inc [2020-11-10] 0.0
Logos Global Management LP Keros Therapeutics Inc [2020-08-31] 6.7
Pontifax Management 4 GP 2015 Ltd Keros Therapeutics Inc [2020-04-23] 23.6
Arkin Moshe Keros Therapeutics Inc [2020-04-20] 10.5
OrbiMed Advisors LLC Keros Therapeutics Inc [2020-04-17] 6.3
Foresite Capital Fund IV LP Keros Therapeutics Inc [2020-04-15] 7.1
Form 3/4/5 Filer 2011 - 2026
Prener Anne
Keros Therapeutics Inc
Bienaime Jean Jacques
Newton Charles W
Knowles Julius
Farzan Nima
Gray Mary Ann
Seth Alpna
Seehra Jasbir
Lerner Lorena Raquel
Cho Esther
Regnante Keith
OrbiMed Genesis GP LLC
OrbiMed Advisors LLC
OrbiMed Capital GP VII LLC
Gordon Carl L
Nussbaum Ran
Pontifax Late Stage Fund LP
Pontifax Late Stage GP Ltd
Kariv Tomer
Pontifax Cayman IV LP
Pontifax China IV LP
Pontifax Israel IV LP
Pontifax Management 4 GP 2015 Ltd
ADAR1 Partners LP
Schneeberger Daniel
ADAR1 Capital Management LLC
ADAR1 Capital Management GP LLC
Chyung Yung H
Rovaldi Christopher
Cooper Simon Peter
Lachey Jennifer
Ordonez Claudia
Lazarus Alon
Arkin Moshe
Arkin Bio Ventures Limited Partnership
Arkin Bio Venture Partners Ltd
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Newton Charles W
Common Stock
2026-03-09 Grant 13,215 $0.00
Bienaime Jean Jacques
Common Stock
2026-03-09 Buy 2,000 $11.21 22,420
Newton Charles W
Stock Option (Right to Buy) · derivative
2026-03-09 Grant 14,788 $0.00
Regnante Keith
Employee Stock Option (Right to Buy) · derivative
2026-02-24 Grant 60,000 $0.00
Lerner Lorena Raquel
Employee Stock Option (Right to Buy) · derivative
2026-02-24 Grant 75,000 $0.00
Employee Stock Option (Right to Buy) · derivative
2026-02-24 Grant 80,000 $0.00
Seehra Jasbir
Employee Stock Option (right to buy) · derivative
2026-02-24 Grant 100,000 $0.00
Cho Esther
Employee Stock Option (Right to Buy) · derivative
2026-02-24 Grant 80,000 $0.00
Seehra Jasbir
Employee Stock Option (Right to Buy) · derivative
2026-02-24 Grant 217,000 $0.00
Seehra Jasbir
Common Stock
2026-02-19 Sell 7,015 $16.17 113,433
Regnante Keith
Common Stock
2026-02-18 Sell 4,739 $16.35 77,483
Lerner Lorena Raquel
Common Stock
2026-02-18 Sell 3,873 $16.35 63,324
Cho Esther
Common Stock
2026-02-18 Sell 4,745 $16.35 77,581
Seehra Jasbir
Employee Stock Option (right to buy) · derivative
2026-01-07 Grant 62,500 $0.00
OrbiMed Genesis GP LLC +2
Common Stock
2025-11-21 Disposed to issuer 74,465 $17.75 1,321,754
OrbiMed Genesis GP LLC +2
Common Stock
2025-11-21 Disposed to issuer 140,057 $17.75 2,486,012
Knowles Julius
Common Stock
2025-11-21 Disposed to issuer 191,527 $17.75 3,399,604
Knowles Julius
Common Stock
2025-11-21 Disposed to issuer 130,494 $17.75 2,316,268
Gordon Carl L
Common Stock
2025-11-21 Disposed to issuer 74,465 $17.75 1,321,754
Gordon Carl L
Common Stock
2025-11-21 Disposed to issuer 140,057 $17.75 2,486,012
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 151 18,668,438
2025-12-31 166 20,235,364
2025-09-30 156 36,247,920
2025-06-30 141 37,572,242
2025-03-31 159 38,962,114
2024-12-31 165 37,203,818
2024-09-30 166 33,562,395
2024-06-30 153 30,753,799
2024-03-31 149 30,901,408
2023-12-31 122 26,041,211
2023-09-30 108 21,683,906
2023-06-30 125 20,861,847
Form 13F Holdings
Firm Period DFND Voting Shares
Y-Intercept Hong Kong Ltd [2026-06-30] SOLE 48,176 48,176
Wealth Enhancement Advisory Services LLC [2026-06-30] SOLE 443 17,841
IFP Advisors LLC [2026-06-30] SOLE 3,013 3,013
Gamma Investing LLC [2026-06-30] DFND 824 824
Farther Finance Advisors LLC [2026-06-30] SOLE 0 252
Sachetta LLC [2026-06-30] SOLE 0 244
True Wealth Design LLC [2026-06-30] SOLE 0 160
Owl Creek Wealth Partners LLC [2026-06-30] SOLE 0 100
Capital Advisors Ltd LLC [2026-06-30] SOLE 0 30
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