Key facts
- BIOTECHNOLOGY VALUE FUND L P filed SCHEDULE 13D/A for XOMA Royalty Corp Common Stock, $0.0075 par value (XOMA).
- Disclosed ownership: 43%.
- Date of event: 14 May 2026.
BIOTECHNOLOGY VALUE FUND L P - 14 May 2026 SCHEDULE 13D/A Report for XOMA Royalty Corp Common Stock, $0.0075 par value (XOMA)
- Filing manager
- BIOTECHNOLOGY VALUE FUND L P
- Reporting owner
- BVF PARTNERS L P/IL
- Symbol
- XOMA
- Shares outstanding
- 17,536,497 shares
- Disclosed shares
- 7,593,303 shares
- Ownership percentage
- 43%
- Form type
- SCHEDULE 13D/A
- Filing time
- 18 May 2026, 17:26:17 UTC
- Event date
- 14 May 2026
- Previous filing
- 29 Apr 2026
- SEC filing
- View on sec.gov
Reporting parties
Subject security
Ownership signal
SEC evidence
Key filing fact
BIOTECHNOLOGY VALUE FUND L P disclosed 43% ownership in XOMA Royalty Corp Common Stock, $0.0075 par value (XOMA) on 14 May 2026.
Change
- Previous schedule filing date: 29 Apr 2026.
- Current filing was accepted on 18 May 2026, 17:26.
Research use
- 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.
Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Reporting managers (10)
Names, ownership, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| BIOTECHNOLOGY VALUE FUND L P | 21% | 3,635,758 | 0 | 3,635,758 | /s/ Mark N. Lampert | Mark N. Lampert, Authorized Signatory | 0000918923 |
| BVF I GP LLC | 21% | 3,635,758 | 0 | 3,635,758 | /s/ Mark N. Lampert | Mark N. Lampert, Authorized Signatory | 0001803805 |
| BIOTECHNOLOGY VALUE FUND II LP | 16% | 2,773,545 | 0 | 2,773,545 | /s/ Mark N. Lampert | Mark N. Lampert, Authorized Signatory | 0001102444 |
| BVF II GP LLC | 16% | 2,773,545 | 0 | 2,773,545 | /s/ Mark N. Lampert | Mark N. Lampert, Authorized Signatory | 0001803806 |
| Biotechnology Value Trading Fund OS LP | 2.3% | 412,000 | 0 | 412,000 | /s/ Mark N. Lampert | Mark N. Lampert, Authorized Signatory | 0001660683 |
| BVF Partners OS Ltd. | 2.3% | 412,000 | 0 | 412,000 | /s/ Mark N. Lampert | Mark N. Lampert, Authorized Signatory | 0001660684 |
| BVF GP HOLDINGS LLC | 36% | 6,409,303 | 0 | 6,409,303 | /s/ Mark N. Lampert | Mark N. Lampert, Authorized Signatory | 0001803809 |
| BVF PARTNERS L P/IL | 43% | 7,593,303 | 0 | 7,593,303 | /s/ Mark N. Lampert | Mark N. Lampert, Authorized Signatory | 0001055947 |
| BVF INC/IL | 43% | 7,593,303 | 0 | 7,593,303 | /s/ Mark N. Lampert | Mark N. Lampert, Authorized Signatory | 0001056807 |
| LAMPERT MARK N | 43% | 7,593,303 | 0 | 7,593,303 | /s/ Mark N. Lampert | Mark N. Lampert | 0001233840 |
CIK / CUSIP context first