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.
All 5 filings we hold were filed within the two-business-day deadline.
Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings
The 20 most recent Form 4 transactions.
| Feb 9 | GBIO | Generation Bio Co. | DTOISS◆ | 11,883 | — | — | — | Open the original filing on SEC.gov |
| Feb 9 | GBIO | Generation Bio Co. | DTOISS◆ | 10,710 | — | — | — | Open the original filing on SEC.gov |
| Feb 9 | GBIO | Generation Bio Co. | UTENDR | 3,759 | — | — | -100.0% | Open the original filing on SEC.gov |
| Feb 2 | GBIO | Generation Bio Co. | MEXER◆ | 1,673 | — | — | — | Open the original filing on SEC.gov |
| Feb 2 | GBIO | Generation Bio Co. | FTAX | 495 | $5.64 | $2.8K | -11.6% | Open the original filing on SEC.gov |
| Feb 2 | GBIO | Generation Bio Co. | MEXER | 1,673 | — | — | +64.8% | Open the original filing on SEC.gov |
| Jan 15 | GBIO | Generation Bio Co. | MEXER◆ | 335 | — | — | — | Open the original filing on SEC.gov |
| Jan 15 | GBIO | Generation Bio Co. | FTAX | 99 | $5.64 | $558 | -3.7% | Open the original filing on SEC.gov |
| Jan 15 | GBIO | Generation Bio Co. | MEXER | 335 | — | — | +14.3% | Open the original filing on SEC.gov |
| Oct 15, 2025 | GBIO | Generation Bio Co. | MEXER◆ | 334 | — | — | — | Open the original filing on SEC.gov |
| Oct 15, 2025 | GBIO | Generation Bio Co. | FTAX | 99 | $6.71 | $664 | -4.0% | Open the original filing on SEC.gov |
| Oct 15, 2025 | GBIO | Generation Bio Co. | MEXER | 334 | — | — | +15.8% | Open the original filing on SEC.gov |
| Jul 15, 2025 | GBIO | Generation Bio Co. | MEXER◆ | 3,347 | — | — | — | Open the original filing on SEC.gov |
| Jul 15, 2025 | GBIO | Generation Bio Co. | FTAX | 983 | $0.426 | $419 | -4.5% | Open the original filing on SEC.gov |
| Jul 15, 2025 | GBIO | Generation Bio Co. | MEXER | 3,347 | — | — | +17.9% | Open the original filing on SEC.gov |
| Apr 15, 2025 | GBIO | Generation Bio Co. | MEXER◆ | 3,347 | — | — | — | Open the original filing on SEC.gov |
| Apr 15, 2025 | GBIO | Generation Bio Co. | FTAX | 983 | $0.3678 | $362 | -5.0% | Open the original filing on SEC.gov |
| Apr 15, 2025 | GBIO | Generation Bio Co. | MEXER | 3,347 | — | — | +20.4% | Open the original filing on SEC.gov |