STEPHEN A SHERWIN
CIK 1079462 · Chairman and CEO · last filed 2026-06-11
STEPHEN A SHERWIN is a Chairman and CEO who has filed 101 SEC Form 4 insider transactions across 9 companies since 2007. The most recent filing, for BIIB, was dated Jun 11, 2026. Across all open-market trades the lifetime net is −$28.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $8.0M 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.
$7.98M
9
101
-$28.66M
Holdings By Company
| 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
101 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-11 | BIIB | Grant (A) | +1,505 | $0 | EDGAR |
| 2026-06-09 | NBIX | Mixed | — | -$2.53M | EDGAR |
| 2026-05-29 | NBIX | Grant (A) | — | $0 | EDGAR |
| 2026-05-21 | NBIX | Exer (M) | +3,318 | $0 | EDGAR |
| 2025-09-03 | NBIX | Gift (G) | −1,000 | $0 | EDGAR |
| 2025-06-18 | BIIB | Grant (A) | +2,370 | $0 | EDGAR |
| 2025-05-22 | NBIX | Mixed | +2,869 | $0 | EDGAR |
| 2025-03-10 | BIIB | Sell (S) | −8,760 | -$1.31M | EDGAR |
| 2025-02-14 | NBIX | Sell (S) | −13,831 | -$1.61M | EDGAR |
| 2024-11-07 | NBIX | Gift (G) | −2,000 | $0 | EDGAR |