BVF PARTNERS L P/IL
Director · Other reporting person · Ten-percent owner · IMUX, XOMA, KYMR, OLMA, MLTX, RPTX …
As of 2026-09-18, BVF PARTNERS L P/IL has 477 Form 4 transactions on record across 11 companies — 129 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-26 | KYMR | Sale | 837,914 @ $106.50 | $89.2M | −29.9% of holding | 1,960,881 | Form 4 |
| 2026-06-26 | KYMR | Sale | 627,597 @ $106.50 | $66.8M | −28.3% of holding | 1,592,261 | Form 4 |
| 2026-06-26 | KYMR | Sale | 113,289 @ $106.50 | $12.1M | −32.1% of holding | 240,123 | Form 4 |
| 2026-06-26 | KYMR | Sale | 51,858 @ $106.50 | $5.5M | −39.7% of holding | 78,787 | Form 4 |
| 2026-03-31 | MLTX | Sale | 1,932,354 @ $16.79 | $32.4M | −18.9% of holding | 8,302,735 | Form 4 |
| 2026-03-31 | MLTX | Sale | 1,569,116 @ $16.79 | $26.3M | −19.2% of holding | 6,599,722 | Form 4 |
| 2026-03-31 | MLTX | Sale | 248,530 @ $16.79 | $4.2M | −19.3% of holding | 1,039,238 | Form 4 |
| 2025-08-05 | — | Sale | 79 @ $1.88 | $148 | −0.0% of holding | 6,194,145 | Form 4 |
| 2025-08-05 | — | Sale | 66 @ $1.88 | $124 | −0.0% of holding | 4,726,743 | Form 4 |
| 2025-08-05 | — | Sale | 11 @ $1.88 | $21 | −0.0% of holding | 560,797 | Form 4 |
| 2025-06-30 | KYMR | Purchase | 142,604 @ $44.00 | $6.3M | +5.4% of holding | 2,798,795 | Form 4 |
| 2025-06-30 | KYMR | Purchase | 115,783 @ $44.00 | $5.1M | +5.5% of holding | 2,219,858 | Form 4 |
| 2025-06-30 | KYMR | Purchase | 58,780 @ $44.00 | $2.6M | +20.0% of holding | 353,412 | Form 4 |
| 2025-05-16 | XOMA | Sale | 265,316 @ $27.10 | $7.2M | −17.3% of holding | 1,267,545 | Form 4 |
| 2025-05-16 | XOMA | Sale | 127,407 @ $27.10 | $3.5M | −8.8% of holding | 1,322,758 | Form 4 |
| 2025-01-24 | XOMA | Sale | 339,679 @ $26.10 | $8.9M | −19.0% of holding | 1,450,165 | Form 4 |
| 2025-01-24 | XOMA | Sale | 149,975 @ $26.10 | $3.9M | −100.0% of holding | 0 | Form 4 |
| 2025-01-24 | XOMA | Sale | 85,776 @ $26.10 | $2.2M | −5.3% of holding | 1,532,861 | Form 4 |
| 2025-01-24 | XOMA | Sale | 75,287 @ $26.10 | $2.0M | −100.0% of holding | 0 | Form 4 |
| 2024-10-29 | ELDN | Purchase | 2,213,816 @ $3.65 | $8.1M | +42.6% of holding | 7,415,596 | Form 4 |
| 2024-10-29 | THRD | Sale | 538,420 @ $14.30 | $7.7M | −23.1% of holding | 1,794,218 | Form 4 |
| 2024-10-29 | ELDN | Purchase | 2,100,244 @ $3.65 | $7.7M | +50.8% of holding | 6,235,545 | Form 4 |
| 2024-10-29 | THRD | Sale | 396,963 @ $14.30 | $5.7M | −22.5% of holding | 1,367,257 | Form 4 |
| 2024-10-29 | ELDN | Purchase | 440,489 @ $3.65 | $1.6M | +110.7% of holding | 838,507 | Form 4 |
| 2024-10-29 | THRD | Sale | 64,617 @ $14.30 | $924K | −26.8% of holding | 176,692 | Form 4 |
452 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-16 | IMUX | Award / grant | 25,370 | 25,370 | Form 4 |
| 2026-07-14 | XOMA | Code U | 772,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 412,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 2,773,545 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 3,635,758 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 772,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 412,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 2,773,545 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 3,635,758 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 772,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 412,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 2,773,545 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 3,635,758 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 772,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 412,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 2,773,545 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 3,635,758 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 772,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 412,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 2,773,545 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 3,635,758 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 772,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 412,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 2,773,545 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 3,635,758 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 772,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 412,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 2,773,545 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 3,635,758 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 772,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 412,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 2,773,545 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 3,635,758 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 772,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 412,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 2,773,545 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 3,635,758 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 772,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 412,000 | 0 | Form 4 |
| 2026-07-14 | XOMA | Code U | 2,773,545 | 0 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.