STEPHEN A SHERWIN
CIK 1079462 · Chairman and CEO · last filed 2026-06-11
"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.
Loading insider history…
Disclosed Exposure
$7.98M
Companies
9
Total Filings
101
Lifetime Open-Market Net
-$28.66M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| BIIB | Director | 15,193 | $200.05 | $3.04M | -$10.17M | 30 | 2026-06-11 |
| NBIX | Director | 30,860 | $159.76 | $4.93M | -$18.51M | 40 | 2026-06-09 |
| CHINOOK THERAPEUTICS, INC. (ADRO) Delisted | Director | — | — | — | $0 | 6 | 2020-05-28 |
| Neon Therapeutics, Inc. (NTGN) Delisted | Director | 0 | — | — | $0 | 2 | 2020-05-06 |
| RIGL | Director | — | $32.85 | — | $0 | 9 | 2016-05-12 |
| VSTM | Director | 2,500 | $4.10 | $10.2K | $21.4K | 4 | 2015-06-16 |
| Fresh Tracks Therapeutics, Inc. (VICL) Delisted | Director | 22,003 | — | — | $70 | 2 | 2015-05-26 |
| ANI PHARMACEUTICALS INC (BPAX) Delisted | Director | 92,244 | — | — | $0 | 4 | 2012-03-30 |
| CELL GENESYS INC (CEGE) Delisted | Chairman and CEO | 30,000 | — | — | $0 | 4 | 2009-10-15 |
Recent Filings · Page 2 of 11
101 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-06-25 | BIIB | Grant (A) | +1,340 | $0 | EDGAR |
| 2024-05-30 | NBIX | Mixed | — | -$3.55M | EDGAR |
| 2024-05-23 | NBIX | Grant (A) | — | $0 | EDGAR |
| 2024-05-21 | NBIX | Exer (M) | +4,199 | $0 | EDGAR |
| 2023-11-20 | NBIX | Gift (G) | −2,750 | $0 | EDGAR |
| 2023-06-28 | BIIB | Grant (A) | +960 | $0 | EDGAR |
| 2023-05-19 | NBIX | Grant (A) | — | $0 | EDGAR |
| 2023-01-05 | NBIX | Mixed | — | -$3.18M | EDGAR |
| 2022-06-17 | BIIB | Grant (A) | +1,370 | $0 | EDGAR |
| 2022-05-20 | NBIX | Grant (A) | — | $0 | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.