EcoR1 Capital, LLC - 31 Dec 2025 SCHEDULE 13G/A Report for Xencor Inc Common Stock (XNCR)

Filing Manager
EcoR1 Capital, LLC
Reporting Manager
EcoR1 Capital, LLC
Security
Xencor Inc Common Stock
Symbol
XNCR
Shares outstanding
72,500,000 shares
Disclosed Ownership
4,640,000 shares
Ownership
6.4%
Form type
SCHEDULE 13G/A
Filing time
17 Feb 2026, 18:24:40 UTC
Date of event
31 Dec 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
EcoR1 Capital, LLC 6.4% 4,640,000 0 4,640,000 /s/ Oleg Nodelman Manager
Oleg Nodelman 6.4% 4,640,000 0 4,640,000 /s/ Oleg Nodelman Reporting person
EcoR1 Capital Fund Qualified, L.P. 6% 4,354,981 0 4,354,981 /s/ Oleg Nodelman Manager of the General Partner, EcoR1 Capital, LLC