Stehman-Breen Catherine has filed 14 insider transactions across 3 companies since May 2023.
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 | Stehman-Breen Catherine | 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 | Stehman-Breen Catherine | 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 | Stehman-Breen Catherine | Director | U | Common Stock | 4752 | $0.00 | 0.0000 | 6,735,454 | 100.00% | 0.07% |
| Feb. 9, 2026 | Generation Bio Co. | $GBIO | Stehman-Breen Catherine | 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 | Stehman-Breen Catherine | 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 | Stehman-Breen Catherine | 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 | Stehman-Breen Catherine | Director | D | Stock Option (right to buy) | 2500 | $0.00 | 0.0000 | 6,735,454 | 100.00% | 0.04% |
| June 4, 2025 | Generation Bio Co. | $GBIO | Stehman-Breen Catherine | Not found | A | Stock Option (right to buy) | 30000 | $0.00 | 30,000.0000 | 67,002,511 | 9999.99% | 0.04% |
| May 30, 2025 | Dyne Therapeutics, Inc. | $DYN | Stehman-Breen Catherine | Not found | A | Stock option (right to buy) | 35000 | $0.00 | 35,000.0000 | 113,121,357 | 9999.99% | 0.03% |
| May 29, 2025 | Tenaya Therapeutics, Inc. | $TNYA | Stehman-Breen Catherine | Not found | A | Stock Option (Right to buy) | 107400 | $0.00 | 107,400.0000 | 87,582,646 | 9999.99% | 0.12% |
| Oct. 18, 2024 | Tenaya Therapeutics, Inc. | $TNYA | Stehman-Breen Catherine | Not found | A | Stock Option (Right to buy) | 34000 | $0.00 | 34,000.0000 | 0 | 9999.99% | 0.00% |
| June 6, 2024 | Generation Bio Co. | $GBIO | Stehman-Breen Catherine | Not found | A | Stock Option (right to buy) | 60000 | $0.00 | 60,000.0000 | 66,433,640 | 9999.99% | 0.09% |
| May 22, 2024 | Dyne Therapeutics, Inc. | $DYN | Stehman-Breen Catherine | Not found | A | Stock option (right to buy) | 25133 | $0.00 | 25,133.0000 | 0 | 9999.99% | 0.00% |
| May 24, 2023 | Dyne Therapeutics, Inc. | $DYN | Stehman-Breen Catherine | Director | A | Stock Option (right to buy) | 24900 | $0.00 | 24,900.0000 | 0 | 9999.99% | 0.00% |