BIOTECHNOLOGY VALUE FUND L P - 09 Oct 2025 SCHEDULE 13G Report for Xencor Inc Common Stock, par value $0.01 per share (XNCR)

Filing Manager
BIOTECHNOLOGY VALUE FUND L P
Reporting Manager
BVF PARTNERS L P/IL
Security
Xencor Inc Common Stock, par value $0.01 per share
Symbol
XNCR
Shares outstanding
71,066,785 shares
Disclosed Ownership
4,619,341 shares
Ownership
6.5%
Form type
SCHEDULE 13G
Filing time
17 Oct 2025, 16:56:24 UTC
Date of event
09 Oct 2025
Next filing
17 Feb 2026
SEC
View on sec.gov

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Quoteable Key Fact

"BIOTECHNOLOGY VALUE FUND L P disclosed 6.5% ownership in Xencor Inc Common Stock, par value $0.01 per share (XNCR) on 09 Oct 2025."

Quick Takeaways

  • BIOTECHNOLOGY VALUE FUND L P filed SCHEDULE 13G for Xencor Inc Common Stock, par value $0.01 per share (XNCR).
  • Disclosed ownership: 6.5%.
  • Date of event: 09 Oct 2025.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 17 Oct 2025, 16:56.

Why This Matters

  • 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.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (10)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
BIOTECHNOLOGY VALUE FUND L P 3.5% 2,467,127 0 2,467,127 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF I GP LLC 3.5% 2,467,127 0 2,467,127 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BIOTECHNOLOGY VALUE FUND II LP 2.5% 1,793,209 0 1,793,209 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF II GP LLC 2.5% 1,793,209 0 1,793,209 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
Biotechnology Value Trading Fund OS LP 0.4% 286,542 0 286,542 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF Partners OS Ltd. 0.4% 286,542 0 286,542 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF GP HOLDINGS LLC 6% 4,260,336 0 4,260,336 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF PARTNERS L P/IL 6.5% 4,619,341 0 4,619,341 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF INC/IL 6.5% 4,619,341 0 4,619,341 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
LAMPERT MARK N 6.5% 4,619,341 0 4,619,341 /s/ Mark N. Lampert Mark N. Lampert

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