Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem 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>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-02-17 10:26 am Sale | 2025-12-31 | 13G | GENERATION BIO CO COM GBIO | PRICE T ROWE ASSOCIATES INC | 209,641 3.100% | -367,148 (-63.65%) | Filing History |
| 2026-02-12 2:14 pm Sale | 2025-12-31 | 13G | GENERATION BIO CO COM GBIO | RENAISSANCE TECHNOLOGIES LLC | 287,614 4.270% | -56,649 (-16.46%) | Filing History |
| 2026-02-11 2:40 pm Sale | 2026-02-09 | 13G | GENERATION BIO CO COM GBIO | Baselake Partners, LP | 0 0.000% | -350,000 (Position Closed) | Filing History |
| 2026-02-06 4:29 pm Purchase | 2026-02-05 | 13G | GENERATION BIO CO COM GBIO | Baselake Partners, LP | 350,000 5.200% | 350,000 (New Position) | Filing History |
| 2025-11-14 3:19 pm Unchanged | 2025-09-30 | 13G | GENERATION BIO CO COM GBIO | SymBiosis Capital Partners, LLC | 421,926 6.300% | 0 (Unchanged) | Filing History |
| 2025-11-14 1:05 pm Purchase | 2025-09-30 | 13G | GENERATION BIO CO COM GBIO | SymBiosis Capital Partners, LLC | 421,926 6.300% | 421,926 (New Position) | Filing History |
| 2025-11-14 12:19 pm Sale | 2025-09-30 | 13G | GENERATION BIO CO COM GBIO | PRICE T ROWE ASSOCIATES INC | 576,789 8.600% | -7,885,822 (-93.18%) | Filing History |
| 2025-11-13 2:28 pm Purchase | 2025-07-01 | 13G | GENERATION BIO CO COM GBIO | RENAISSANCE TECHNOLOGIES LLC | 344,263 5.110% | 344,263 (New Position) | Filing History |
| 2025-08-14 1:07 pm Purchase | 2025-06-30 | 13G | GENERATION BIO CO COM GBIO | PRICE T ROWE ASSOCIATES INC | 8,462,611 12.600% | 7,527,452 (+804.94%) | Filing History |
| 2025-08-06 12:01 pm Purchase | 2025-06-30 | 13G | GENERATION BIO CO GBIO | FMR LLC | 2,345,624 3.500% | 1,883,019 (+407.05%) | Filing History |
| 2025-07-17 7:54 pm Sale | 2025-06-30 | 13G | GENERATION BIO CO GBIO | BlackRock Inc. BLK | 115,205 1.700% | -226,395 (-66.27%) | Filing History |
| 2025-02-12 09:28 am Sale | 2024-12-31 | 13G | GENERATION BIO CO GBIO | FMR LLC | 462,605 6.900% | -72,635 (-13.57%) | Filing History |
| 2024-12-09 6:18 pm Sale | 2024-12-05 | 13G | GENERATION BIO CO GBIO | BB BIOTECH AG | 331,087 5.000% | -29,741 (-8.24%) | Filing History |
| 2024-11-14 1:22 pm Purchase | 2024-09-30 | 13G | GENERATION BIO CO GBIO | PRICE T ROWE ASSOCIATES INC | 935,159 14.000% | 242,542 (+35.02%) | Filing History |
| 2024-11-08 2:17 pm Unchanged | 2024-09-30 | 13G | GENERATION BIO CO GBIO | BlackRock Inc. BLK | 341,600 5.100% | 0 (Unchanged) | Filing History |
| 2024-10-23 5:04 pm Purchase | 2024-09-30 | 13G | GENERATION BIO CO GBIO | BlackRock Inc. BLK | 341,600 5.100% | 24,758 (+7.81%) | Filing History |
| 2024-02-14 10:03 am Sale | 2023-12-31 | 13G | GENERATION BIO CO GBIO | PRICE T ROWE ASSOCIATES INC | 692,617 10.500% | -33,488 (-4.61%) | Filing History |
| 2024-02-13 06:17 am Unchanged | 2023-12-31 | 13G | GENERATION BIO CO GBIO | BB BIOTECH AG | 360,828 5.500% | 0 (Unchanged) | Filing History |
| 2024-02-09 4:05 pm Unchanged | 2023-12-31 | 13G | GENERATION BIO CO GBIO | Atlas Venture Fund X L.P. | 711,194 10.800% | 0 (Unchanged) | Filing History |
| 2024-02-09 09:03 am Sale | 2024-02-08 | 13G | GENERATION BIO CO GBIO | FMR LLC | 535,240 8.100% | -121,096 (-18.45%) | Filing History |