BVF Partners OS Ltd.
CIK 1660684 · last filed 2025-08-07
BVF Partners OS Ltd. is a corporate insider who has filed 17 SEC Form 4 insider transactions across 13 companies since 2017. The most recent filing, for EPIX, was dated Aug 7, 2025. Across all open-market trades the lifetime net is −$771.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $397.2M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$397.19M
13
17
-$771.20M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ESSA Pharma Inc. (EPIX) Delisted | 4,726,809 | $0.20 | $951.0K | -$2.9K | 1 | 2025-08-07 | |
| ELDN | 145,029 | $3.57 | $517.8K | $0 | 1 | 2023-05-09 | |
| CTI BIOPHARMA CORP (CTIC) Delisted | Director | 62,978 | $9.09 | $572.5K | -$520.20M | 1 | 2022-08-11 |
| Merus N.V. (MRUS) Delisted | 311,210 | $90.00 | $28.01M | -$432.55M | 2 | 2021-07-07 | |
| Eledon Pharmaceuticals, Inc. (NVUS) Delisted | 771,780 | — | — | $0 | 1 | 2020-12-28 | |
| OLMA | 3,392,663 | $9.87 | $33.49M | $215.71M | 1 | 2020-11-20 | |
| XOMA | 1,941,035 | $41.79 | $81.12M | $5.47M | 1 | 2020-08-25 | |
| KYMR | 1,359,109 | $86.20 | $117.16M | $0 | 1 | 2020-08-25 | |
| CYTK | 2,350,829 | $70.15 | $164.91M | -$118.47M | 1 | 2020-02-18 | |
| FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | 3,648,474 | $38.00 | $138.64M | $30.45M | 2 | 2019-12-11 | |
| INFINITY PHARMACEUTICALS, INC. (INFI) Delisted | 5,815,887 | $0.04 | $260.0K | $8.55M | 1 | 2018-11-15 | |
| CONCERT PHARMACEUTICALS, INC. (CNCE) Delisted | 291,788 | $8.37 | $2.44M | $36.80M | 1 | 2017-10-23 | |
| ALPINE IMMUNE SCIENCES, INC. (NVLS) Delisted | 653,370 | — | — | $3.04M | 2 | 2017-05-19 |
Recent Filings
17 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-08-07 | ESSA Pharma Inc. (EPIX) Delisted | Mixed | +29,198,440 | -$10 | EDGAR |
| 2023-05-09 | ELDN | Buy (P) | +19,789,320 | $0 | EDGAR |
| 2022-08-11 | CTI BIOPHARMA CORP (CTIC) Delisted | Mixed | −1,166,690 | -$520.20M | EDGAR |
| 2021-07-07 | Merus N.V. (MRUS) Delisted | Sell (S) | −21,860,220 | -$453.60M | EDGAR |
| 2020-12-28 | Eledon Pharmaceuticals, Inc. (NVUS) Delisted | Conv (C) | +12,896,280 | $0 | EDGAR |
| 2020-11-20 | OLMA | Mixed | +63,520,100 | $215.71M | EDGAR |
| 2020-09-14 | Merus N.V. (MRUS) Delisted | Buy (P) | +1,896,510 | $21.05M | EDGAR |
| 2020-08-25 | XOMA | Buy (P) | +281,750 | $5.47M | EDGAR |
| 2020-08-25 | KYMR | Mixed | +25,574,970 | $195.74M | EDGAR |
| 2020-02-18 | CYTK | Sell (S) | −7,504,210 | -$118.47M | EDGAR |