Donald William Nicholson
CIK 1814617 · last filed 2026-02-09
Donald William Nicholson is a corporate insider who has filed 18 SEC Form 4 insider transactions across 3 companies since 2020. The most recent filing, for GBIO, was dated Feb 9, 2026. Across all open-market trades the lifetime net is +$293.2K, making them a net buyer over the disclosed history.
"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.
$0
3
18
$293.2K
Holdings By Company
Recent Filings
18 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-02-09 | Generation Bio Co. (GBIO) Delisted | Mixed | −21,357 | $0 | EDGAR |
| 2025-06-13 | IRON | Grant (A) | — | $0 | EDGAR |
| 2025-06-06 | Generation Bio Co. (GBIO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2024-06-14 | IRON | Grant (A) | — | $0 | EDGAR |
| 2024-06-10 | Generation Bio Co. (GBIO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-12-05 | Generation Bio Co. (GBIO) Delisted | Buy (P) | +100,000 | $144.0K | EDGAR |
| 2023-06-12 | Generation Bio Co. (GBIO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-06-09 | IRON | Grant (A) | — | $0 | EDGAR |
| 2023-01-03 | — | Grant (A) | — | $0 | |
| 2022-06-16 | KYMR | Grant (A) | — | $0 | EDGAR |