D. E. SHAW & CO, L.P. - 31 Dec 2025 SCHEDULE 13G/A Report for Keros Therapeutics, Inc. Common Stock, $0.0001 par value per share (KROS)

Filing Manager
D. E. SHAW & CO, L.P.
Reporting Manager
D. E. Shaw & Co., L.P.
Security
Keros Therapeutics, Inc. Common Stock, $0.0001 par value per share
Symbol
KROS
Shares outstanding
19,388,615 shares
Disclosed Ownership
756,156 shares
Ownership
3.9%
Form type
SCHEDULE 13G/A
Filing time
17 Feb 2026, 16:05:40 UTC
Date of event
31 Dec 2025
Previous filing
27 Oct 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
D. E. Shaw & Co., L.P. 3.9% 756,156 0 756,156 /s/ Daniel R. Marcus Daniel R. Marcus / Chief Compliance Officer
D. E. Shaw & Co., L.L.C. 3.9% 755,473 0 755,473 /s/ Daniel R. Marcus Daniel R. Marcus / Authorized Signatory
David E. Shaw 3.9% 756,156 0 756,156 /s/ Daniel R. Marcus Daniel R. Marcus / Attorney-in-Fact for David E. Shaw