Stephen K Doberstein
CIK 1480111 · SVP & Chief Scientific Officer · last filed 2026-06-02
Stephen K Doberstein is a SVP & Chief Scientific Officer who has filed 42 SEC Form 4 insider transactions across 3 companies since 2010. The most recent filing, for FBRX, was dated Jun 2, 2026. Across all open-market trades the lifetime net is −$30.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $6.4M 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.
$6.39M
3
42
-$30.48M
Holdings By Company
Recent Filings
42 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-02 | FBRX | Grant (A) | — | $0 | EDGAR |
| 2025-03-21 | FBRX | Grant (A) | — | $0 | EDGAR |
| 2024-08-22 | FBRX | Grant (A) | — | $0 | EDGAR |
| 2023-09-20 | FBRX | Grant (A) | — | $0 | EDGAR |
| 2022-06-02 | FBRX | Grant (A) | — | $0 | EDGAR |
| 2022-05-16 | FBRX | Grant (A) | — | $0 | EDGAR |
| 2021-12-29 | Dicerna Pharmaceuticals Inc (DRNA) Delisted | Mixed | −3,333 | -$127.5K | EDGAR |
| 2021-06-07 | Dicerna Pharmaceuticals Inc (DRNA) Delisted | Mixed | +3,333 | $0 | EDGAR |
| 2020-06-16 | Dicerna Pharmaceuticals Inc (DRNA) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-03-16 | Dicerna Pharmaceuticals Inc (DRNA) Delisted | Grant (A) | — | $0 | EDGAR |