Xencor Inc - XNCR

Ownership (Schedule 13D / 13G) · latest 50 filings · Back to all files
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Filed Form Reporting person Percent Shares SEC
May 15, 2026 SCHEDULE 13G/A EcoR1 Capital, LLC 2.9% 2,183,000 View
May 15, 2026 SCHEDULE 13G/A Oleg Nodelman 2.9% 2,183,000 View
May 15, 2026 SCHEDULE 13G/A EcoR1 Capital Fund Qualified, L.P. 2.8% 2,041,033 View
Mar 30, 2026 SCHEDULE 13G RA Capital Management, L.P. 6.5% 4,736,739 View
Mar 30, 2026 SCHEDULE 13G Peter Kolchinsky 6.5% 4,736,739 View
Mar 30, 2026 SCHEDULE 13G Rajeev Shah 6.5% 4,736,739 View
Mar 30, 2026 SCHEDULE 13G RA Capital Healthcare Fund, L.P. 6.5% 4,736,739 View
Mar 27, 2026 SCHEDULE 13G/A The Vanguard Group 0.0% 0 View
Feb 17, 2026 SCHEDULE 13G/A BIOTECHNOLOGY VALUE FUND L P 5.3% 3,798,627 View
Feb 17, 2026 SCHEDULE 13G/A BVF I GP LLC 5.3% 3,798,627 View
Feb 17, 2026 SCHEDULE 13G/A BIOTECHNOLOGY VALUE FUND II LP 3.9% 2,787,735 View
Feb 17, 2026 SCHEDULE 13G/A BVF II GP LLC 3.9% 2,787,735 View
Feb 17, 2026 SCHEDULE 13G/A Biotechnology Value Trading Fund OS LP 0.6% 439,372 View
Feb 17, 2026 SCHEDULE 13G/A BVF Partners OS Ltd. 0.6% 439,372 View
Feb 17, 2026 SCHEDULE 13G/A BVF GP HOLDINGS LLC 9.2% 6,586,362 View
Feb 17, 2026 SCHEDULE 13G/A BVF PARTNERS L P/IL 9.99% 7,133,720 View
Feb 17, 2026 SCHEDULE 13G/A BVF INC/IL 9.99% 7,133,720 View
Feb 17, 2026 SCHEDULE 13G/A LAMPERT MARK N 9.99% 7,133,720 View
Feb 17, 2026 SCHEDULE 13G/A EcoR1 Capital, LLC 6.4% 4,640,000 View
Feb 17, 2026 SCHEDULE 13G/A Oleg Nodelman 6.4% 4,640,000 View
Feb 17, 2026 SCHEDULE 13G/A EcoR1 Capital Fund Qualified, L.P. 6.0% 4,354,981 View
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G. Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F). Amendments (/A) can repeat the same holder over time, so rows should not be summed. Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.