Nicholson Donald William has filed 13 insider transactions across 2 companies since December 2022.
Most recent transaction: a disposition of 6000 shares of Generation Bio Co. ($GBIO) on February 09, 2026.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 9, 2026 | Generation Bio Co. | $GBIO | Nicholson Donald William | Director | D | Stock Option (right to buy) | 6000 | $0.00 | 0.0000 | 6,735,454 | 100.00% | 0.09% |
| Feb. 9, 2026 | Generation Bio Co. | $GBIO | Nicholson Donald William | Director | U | Common Stock | 21357 | $0.00 | 0.0000 | 6,735,454 | 100.00% | 0.32% |
| Feb. 9, 2026 | Generation Bio Co. | $GBIO | Nicholson Donald William | Director | D | Stock Option (right to buy) | 3000 | $0.00 | 0.0000 | 6,735,454 | 100.00% | 0.04% |
| Feb. 9, 2026 | Generation Bio Co. | $GBIO | Nicholson Donald William | Director | D | Stock Option (right to buy) | 5200 | $0.00 | 0.0000 | 6,735,454 | 100.00% | 0.08% |
| Feb. 9, 2026 | Generation Bio Co. | $GBIO | Nicholson Donald William | Director | D | Stock Option (right to buy) | 1500 | $0.00 | 0.0000 | 6,735,454 | 100.00% | 0.02% |
| Feb. 9, 2026 | Generation Bio Co. | $GBIO | Nicholson Donald William | Director | D | Stock Option (right to buy) | 1920 | $0.00 | 0.0000 | 6,735,454 | 100.00% | 0.03% |
| Feb. 9, 2026 | Generation Bio Co. | $GBIO | Nicholson Donald William | Director | D | Stock Option (right to buy) | 2500 | $0.00 | 0.0000 | 6,735,454 | 100.00% | 0.04% |
| June 11, 2025 | Disc Medicine, Inc. | $IRON | Nicholson Donald William | Not found | A | Stock Option (Right to Buy) | 10000 | $0.00 | 10,000.0000 | 34,569,042 | 9999.99% | 0.03% |
| June 4, 2025 | Generation Bio Co. | $GBIO | Nicholson Donald William | Not found | A | Stock Option (right to buy) | 30000 | $0.00 | 30,000.0000 | 67,002,511 | 9999.99% | 0.04% |
| June 12, 2024 | Disc Medicine, Inc. | $IRON | Nicholson Donald William | Not found | A | Stock Option (Right to Buy) | 10000 | $0.00 | 10,000.0000 | 0 | 9999.99% | 0.00% |
| June 6, 2024 | Generation Bio Co. | $GBIO | Nicholson Donald William | Not found | A | Stock Option (right to buy) | 60000 | $0.00 | 60,000.0000 | 66,433,640 | 9999.99% | 0.09% |
| June 9, 2023 | Disc Medicine, Inc. | $IRON | Nicholson Donald William | Director | A | Stock Option (Right to Buy) | 7136 | $0.00 | 7,136.0000 | 0 | 9999.99% | 0.00% |
| Dec. 29, 2022 | Disc Medicine, Inc. | $IRON | Nicholson Donald William | Director | A | Stock Option (Right to Buy) | 7000 | $0.00 | 7,000.0000 | 0 | 9999.99% | 0.00% |