Summary
Updated Aug 31, 2026
BVF PARTNERS L P is 10% Owner of XOMA Royalty Corp (XOMA). 22 SEC Form 4 filings on record going back to 2024, most recently on 16 July 2026. Most recent open-market trade: sold $5.52M of KYMR on 26 June 2026. Lifetime open-market purchases: $31.30M. Lifetime open-market sales: $361.57M. Historical track record: 5/5 stars across 6 tracked purchases.
Recent Transactions
20Every recent SEC Form 4 transaction BVF PARTNERS L P has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★★★ (5/5) |
| Total purchases tracked | 6 |
| Purchases with forward-return data | 6 |
| 30-day win rate | 100% |
| 90-day win rate | 100% |
| Avg 5-day return | +17.46% |
| Avg 30-day return | +15.40% |
| Avg 90-day return | +31.93% |
| Best 30-day return | +29.81% |
Trading Pattern
InsiderAlpha's records for BVF PARTNERS L P go back to 2024: 22 primary Form 4 filings, an average of 7.3 per year. The typical open-market purchase is $5.22M (6 buys totaling $31.30M). The largest single buy on record is $8.08M of ELDN in 2024. Sales side: 18 recorded sales totaling $361.57M, so the filing history runs sell-heavy by dollar value. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies BVF PARTNERS L P files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- BAKER BROS. ADVISORS LP - $172.50M of KYMR open-market activity in the last 12 months
- Bruce Booth - $100.59M of KYMR open-market activity in the last 12 months
- Nello Mainolfi - $34.88M of KYMR open-market activity in the last 12 months
- Jeremy G. Chadwick - $15.60M of KYMR open-market activity in the last 12 months
- Bruce N. Jacobs - $13.92M of KYMR open-market activity in the last 12 months
- Jared Gollob - $9.13M of KYMR open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
What is BVF PARTNERS L P?
BVF PARTNERS L P is an investment firm, tracked as 10% Owner of XOMA Royalty Corp (XOMA). InsiderAlpha holds 22 primary Form 4 filings for it, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has BVF PARTNERS L P submitted recently?
5 primary Form 4 filings in the last 90 days, covering 4 companies.
Has BVF PARTNERS L P been buying or selling stock?
Recorded transactions: 6 open-market purchases ($31.30M) and 18 open-market sales ($361.57M) across all tracked filings.
How accurate is BVF PARTNERS L P's historical track record?
Across 6 tracked purchases, BVF PARTNERS L P averaged +15.4% avg 30-day return with a 100% 30-day win rate. InsiderAlpha rates the track record at 5/5 stars.
Where can I see all of BVF PARTNERS L P's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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