Form 4 filings across 1 company. Net figures count open-market buys and sales only. EDGAR profile ↗
Lifetime net: $0
Reported holding is the most recent post-transaction share count on a Table I row.
How quickly this filer reports. Section 16 allows two business days from the transaction.
1 of 6 filings we hold was filed after the two-business-day deadline. The furthest past the deadline was 11 business days late.
Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays.
The 28 most recent Form 4 transactions.
| Feb 9 | GBIO | Generation Bio Co. | DTOISS◆ | 90,168 | — | — | — | Open the original filing on SEC.gov |
| Feb 9 | GBIO | Generation Bio Co. | DTOISS◆ | 50,624 | — | — | — | Open the original filing on SEC.gov |
| Feb 9 | GBIO | Generation Bio Co. | DTOISS◆ | 37,499 | — | — | — | Open the original filing on SEC.gov |
| Feb 9 | GBIO | Generation Bio Co. | DTOISS◆ | 25,099 | — | — | — | Open the original filing on SEC.gov |
| Feb 9 | GBIO | Generation Bio Co. | DTOISS◆ | 19,903 | — | — | — | Open the original filing on SEC.gov |
| Feb 9 | GBIO | Generation Bio Co. | UTENDR | 27,500 | — | — | -100.0% | Open the original filing on SEC.gov |
| Feb 9 | GBIO | Generation Bio Co. | UTENDR | 22,646 | — | — | -100.0% | Open the original filing on SEC.gov |
| Feb 9 | GBIO | Generation Bio Co. | UTENDR | 138,492 | — | — | -100.0% | Open the original filing on SEC.gov |
| Feb 2 | GBIO | Generation Bio Co. | MEXER◆ | 1,582 | — | — | — | Open the original filing on SEC.gov |
| Feb 2 | GBIO | Generation Bio Co. | FTAX | 550 | $5.64 | $3.1K | -0.4% | Open the original filing on SEC.gov |
| Feb 2 | GBIO | Generation Bio Co. | MEXER | 1,582 | — | — | +1.1% | Open the original filing on SEC.gov |
| Jan 15 | GBIO | Generation Bio Co. | MEXER◆ | 395 | — | — | — | Open the original filing on SEC.gov |
| Jan 15 | GBIO | Generation Bio Co. | FTAX | 137 | $5.64 | $773 | -0.1% | Open the original filing on SEC.gov |
| Jan 15 | GBIO | Generation Bio Co. | MEXER | 395 | — | — | +0.3% | Open the original filing on SEC.gov |
| Oct 31, 2025 | GBIO | Generation Bio Co. | MEXER◆ | 659 | — | — | — | Open the original filing on SEC.gov |
| Oct 31, 2025 | GBIO | Generation Bio Co. | FTAX | 293 | $5.51 | $1.6K | -0.2% | Open the original filing on SEC.gov |
| Oct 31, 2025 | GBIO | Generation Bio Co. | MEXER | 659 | — | — | +0.5% | Open the original filing on SEC.gov |
| Oct 15, 2025 | GBIO | Generation Bio Co. | MEXER◆ | 527 | — | — | — | Open the original filing on SEC.gov |
| Oct 15, 2025 | GBIO | Generation Bio Co. | FTAX | 155 | $6.71 | $1K | -0.1% | Open the original filing on SEC.gov |
| Oct 15, 2025 | GBIO | Generation Bio Co. | MEXER | 527 | — | — | +0.4% | Open the original filing on SEC.gov |
| Jul 15, 2025 | GBIO | Generation Bio Co. | MEXER◆ | 5,273 | — | — | — | Open the original filing on SEC.gov |
| Jul 15, 2025 | GBIO | Generation Bio Co. | FTAX | 1,548 | $0.426 | $659 | -0.1% | Open the original filing on SEC.gov |
| Jul 15, 2025 | GBIO | Generation Bio Co. | MEXER | 5,273 | — | — | +0.4% | Open the original filing on SEC.gov |
| Apr 15, 2025 | GBIO | Generation Bio Co. | MEXER◆ | 5,274 | — | — | — | Open the original filing on SEC.gov |
| Apr 15, 2025 | GBIO | Generation Bio Co. | FTAX | 1,548 | $0.3678 | $569 | -0.1% | Open the original filing on SEC.gov |
| Apr 15, 2025 | GBIO | Generation Bio Co. | MEXER | 5,274 | — | — | +0.4% | Open the original filing on SEC.gov |