Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2026-02-09 Equity Swap | 2026-02-09 6:19 pm | N/A N/A | Generation Bio Co. | GBIO | Atlas Venture Fund X L.P. ATLAS VENTURE ASSOCIATES X L.P. Atlas Venture Associates X LLC Atlas Venture Opportunity Fund I L.P. Atlas Venture Associates Opportunity I L.P. Atlas Venture Associates Opportunity I LLC 10% Owner | 827,946 | $0 | 0 (Direct) | View |
| 2026-02-09 Equity Swap | 2026-02-09 5:42 pm | N/A N/A | Generation Bio Co. | GBIO | Stehman-Breen Catherine Director | 4,752 | $0 | 0 (Direct) | View |
| 2026-02-09 Equity Swap | 2026-02-09 5:41 pm | N/A N/A | Generation Bio Co. | GBIO | Rowland Charles A Jr Director | 53,475 | $0 | 0 (Direct) | View |
| 2026-02-09 Equity Swap | 2026-02-09 5:41 pm | N/A N/A | Generation Bio Co. | GBIO | Rhodes Jason P Director | 827,946 | $0 | 0 (Indirect) | View |
| 2026-02-09 Equity Swap | 2026-02-09 5:40 pm | N/A N/A | Generation Bio Co. | GBIO | Quinn Anthony G. Director | 37,211 | $0 | 0 (Direct) | View |
| 2026-02-09 Equity Swap | 2026-02-09 5:39 pm | N/A N/A | Generation Bio Co. | GBIO | Nicholson Donald William Director | 21,357 | $0 | 0 (Direct) | View |
| 2026-02-09 Equity Swap | 2026-02-09 5:36 pm | N/A N/A | Generation Bio Co. | GBIO | MCDONOUGH GEOFF Director | 188,638 | $0 | 0 (Direct) | View |
| 2026-02-09 Equity Swap | 2026-02-09 5:34 pm | N/A N/A | Generation Bio Co. | GBIO | Howze Yalonda INTERIM CEO AND PRESIDENT | 3,759 | $0 | 0 (Direct) | View |
| 2026-02-09 Equity Swap | 2026-02-09 5:32 pm | N/A N/A | Generation Bio Co. | GBIO | Cooper Ronald Harold Wilfred Director | 950 | $0 | 0 (Direct) | View |
| 2026-02-09 Equity Swap | 2026-02-09 5:32 pm | N/A N/A | Generation Bio Co. | GBIO | Conway Kevin John CHIEF FINANCIAL OFFICER | 2,072 | $0 | 0 (Direct) | View |
| 2026-02-09 Equity Swap | 2026-02-09 5:30 pm | N/A N/A | Generation Bio Co. | GBIO | Christensen Gustav Director | 13,142 | $0 | 0 (Direct) | View |
| 2026-02-09 Equity Swap | 2026-02-09 5:29 pm | N/A N/A | Generation Bio Co. | GBIO | Appelhans Dannielle Director | 1,999 | $0 | 0 (Direct) | View |
| 2026-02-02 Tax Withholding | 2026-02-04 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Conway Kevin John Chief Financial Officer | 72 | $5.64 | 2,072 (Direct) | View |
| 2026-02-02 Exercise | 2026-02-04 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Conway Kevin John Chief Financial Officer | 235 | $0 | 2,072 (Direct) | View |
| 2026-02-02 Tax Withholding | 2026-02-04 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | MCDONOUGH GEOFF Director | 550 | $5.64 | 188,638 (Direct) | View |
| 2026-02-02 Exercise | 2026-02-04 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | MCDONOUGH GEOFF Director | 1,582 | $0 | 188,638 (Direct) | View |
| 2026-02-02 Tax Withholding | 2026-02-04 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Howze Yalonda INTERIM CEO & PRESIDENT | 495 | $5.64 | 3,759 (Direct) | View |
| 2026-02-02 Exercise | 2026-02-04 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Howze Yalonda INTERIM CEO & PRESIDENT | 1,673 | $0 | 3,759 (Direct) | View |
| 2026-01-15 Tax Withholding | 2026-01-16 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Conway Kevin John Chief Financial Officer | 17 | $5.64 | 2,144 (Direct) | View |
| 2026-01-15 Exercise | 2026-01-16 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Conway Kevin John Chief Financial Officer | 59 | $0 | 2,144 (Direct) | View |
| 2026-01-15 Tax Withholding | 2026-01-16 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | MCDONOUGH GEOFF Director | 137 | $5.64 | 189,188 (Direct) | View |
| 2026-01-15 Exercise | 2026-01-16 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | MCDONOUGH GEOFF Director | 395 | $0 | 189,188 (Direct) | View |
| 2026-01-15 Tax Withholding | 2026-01-16 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Howze Yalonda CHIEF LEGAL OFFICER | 99 | $5.64 | 4,254 (Direct) | View |
| 2026-01-15 Exercise | 2026-01-16 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Howze Yalonda CHIEF LEGAL OFFICER | 335 | $0 | 4,254 (Direct) | View |
| 2025-10-31 Tax Withholding | 2025-11-21 5:00 pm | N/A N/A | Generation Bio Co. | GBIO | MCDONOUGH GEOFF Director | 293 | $5.51 | 189,325 (Direct) | View |
| 2025-10-31 Exercise | 2025-11-21 5:00 pm | N/A N/A | Generation Bio Co. | GBIO | MCDONOUGH GEOFF Director | 659 | $0 | 189,325 (Direct) | View |
| 2025-10-15 Tax Withholding | 2025-10-17 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Samayoa Phillip CHIEF SCIENTIFIC OFFICER | 34 | $6.71 | 14,711 (Direct) | View |
| 2025-10-15 Exercise | 2025-10-17 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Samayoa Phillip CHIEF SCIENTIFIC OFFICER | 114 | $0 | 14,711 (Direct) | View |
| 2025-10-15 Tax Withholding | 2025-10-17 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | MCDONOUGH GEOFF PRESIDENT AND CEO | 155 | $6.71 | 189,618 (Direct) | View |
| 2025-10-15 Exercise | 2025-10-17 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | MCDONOUGH GEOFF PRESIDENT AND CEO | 527 | $0 | 189,618 (Direct) | View |
| 2025-10-15 Tax Withholding | 2025-10-17 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Howze Yalonda CHIEF LEGAL OFFICER | 99 | $6.71 | 4,353 (Direct) | View |
| 2025-10-15 Exercise | 2025-10-17 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Howze Yalonda CHIEF LEGAL OFFICER | 334 | $0 | 4,353 (Direct) | View |
| 2025-10-15 Tax Withholding | 2025-10-17 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Paone Antoinette CHIEF OPERATING OFFICER | 47 | $6.71 | 4,453 (Direct) | View |
| 2025-10-15 Exercise | 2025-10-17 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Paone Antoinette CHIEF OPERATING OFFICER | 159 | $0 | 4,453 (Direct) | View |
| 2025-10-15 Tax Withholding | 2025-10-17 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Conway Kevin John Chief Financial Officer | 18 | $6.71 | 2,161 (Direct) | View |
| 2025-10-15 Exercise | 2025-10-17 4:05 pm | N/A N/A | Generation Bio Co. | GBIO | Conway Kevin John Chief Financial Officer | 58 | $0 | 2,161 (Direct) | View |
| 2025-07-15 Tax Withholding | 2025-07-17 4:10 pm | N/A N/A | Generation Bio Co. | GBIO | Howze Yalonda CHIEF LEGAL OFFICER | 983 | $0.426 | 44,528 (Direct) | View |
| 2025-07-15 Exercise | 2025-07-17 4:10 pm | N/A N/A | Generation Bio Co. | GBIO | Howze Yalonda CHIEF LEGAL OFFICER | 3,347 | $0 | 44,528 (Direct) | View |
| 2025-07-15 Tax Withholding | 2025-07-17 4:10 pm | N/A N/A | Generation Bio Co. | GBIO | Conway Kevin John Chief Financial Officer | 173 | $0.426 | 21,793 (Direct) | View |
| 2025-07-15 Exercise | 2025-07-17 4:10 pm | N/A N/A | Generation Bio Co. | GBIO | Conway Kevin John Chief Financial Officer | 587 | $0 | 21,793 (Direct) | View |
| 2025-07-15 Tax Withholding | 2025-07-17 4:10 pm | N/A N/A | Generation Bio Co. | GBIO | Paone Antoinette CHIEF OPERATING OFFICER | 468 | $0.426 | 45,013 (Direct) | View |
| 2025-07-15 Exercise | 2025-07-17 4:10 pm | N/A N/A | Generation Bio Co. | GBIO | Paone Antoinette CHIEF OPERATING OFFICER | 1,592 | $0 | 45,013 (Direct) | View |
| 2025-07-15 Tax Withholding | 2025-07-17 4:10 pm | N/A N/A | Generation Bio Co. | GBIO | Samayoa Phillip CHIEF SCIENTIFIC OFFICER | 337 | $0.426 | 147,464 (Direct) | View |
| 2025-07-15 Exercise | 2025-07-17 4:10 pm | N/A N/A | Generation Bio Co. | GBIO | Samayoa Phillip CHIEF SCIENTIFIC OFFICER | 1,147 | $0 | 147,464 (Direct) | View |
| 2025-07-15 Tax Withholding | 2025-07-17 4:10 pm | N/A N/A | Generation Bio Co. | GBIO | MCDONOUGH GEOFF PRESIDENT AND CEO | 1,548 | $0.426 | 1,897,748 (Direct) | View |
| 2025-07-15 Exercise | 2025-07-17 4:10 pm | N/A N/A | Generation Bio Co. | GBIO | MCDONOUGH GEOFF PRESIDENT AND CEO | 5,273 | $0 | 1,897,748 (Direct) | View |
| 2025-06-04 Option Award | 2025-06-06 4:19 pm | N/A 2035-06-03 | Generation Bio Co. | GBIO | Cooper Ronald Harold Wilfred Director | 30,000 | $0 | 30,000 (Direct) | View |
| 2025-06-04 Option Award | 2025-06-06 4:05 pm | N/A 2035-06-03 | Generation Bio Co. | GBIO | Christensen Gustav Director | 30,000 | $0 | 60,000 (Direct) | View |
| 2025-06-04 Option Award | 2025-06-06 4:05 pm | N/A 2035-06-03 | Generation Bio Co. | GBIO | Quinn Anthony G. Director | 30,000 | $0 | 30,000 (Direct) | View |
| 2025-06-04 Option Award | 2025-06-06 4:05 pm | N/A 2035-06-03 | Generation Bio Co. | GBIO | JONAS JEFFREY M Director | 30,000 | $0 | 30,000 (Direct) | View |
| 2025-06-04 Option Award | 2025-06-06 4:05 pm | N/A 2035-06-03 | Generation Bio Co. | GBIO | Nicholson Donald William Director | 30,000 | $0 | 30,000 (Direct) | View |
| 2025-06-04 Option Award | 2025-06-06 4:05 pm | N/A 2035-06-03 | Generation Bio Co. | GBIO | Stehman-Breen Catherine Director | 30,000 | $0 | 30,000 (Direct) | View |
| 2025-06-04 Option Award | 2025-06-06 4:05 pm | N/A 2035-06-03 | Generation Bio Co. | GBIO | Rowland Charles A Jr Director | 30,000 | $0 | 30,000 (Direct) | View |
| 2025-06-04 Option Award | 2025-06-06 4:05 pm | N/A 2035-06-03 | Generation Bio Co. | GBIO | Rhodes Jason P Director | 30,000 | $0 | 30,000 (Direct) | View |