MCDONOUGH GEOFF - Insider Non-Derivative Transactions at Generation Bio Co. (GBIO) - (SEC)
Updated on January 3, 2026.
According to recent SEC insider information filed on Oct 31, 2025, MCDONOUGH GEOFF's relationship to Generation Bio Co. (GBIO) is Director, and currently has 137,495 shares of Common Stock.
The chart below shows the number of shares owned, and the table shows the recent insider transactions.
You can see similar information for other GBIO insiders.
Related Topics: SEC Topic List.
Data Source: SEC.
MCDONOUGH GEOFF - Insider Non-Derivative Transactions of GBIO Common Stock
MCDONOUGH GEOFF - Insider Non-Derivative Transactions at GBIO
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| Date | Transaction | No. of Shares | Price Per Share | Shares Owned After Transactions |
|---|---|---|---|---|
| Nov 1, 2025 | F -- (Common Stock) | 293 | 5.51 | 137202 |
| Nov 1, 2025 | M -- (Common Stock) | 659 | 0 | 137495 |
| Oct 16, 2025 | F -- (Common Stock) | 155 | 6.71 | 136836 |
| Oct 16, 2025 | M -- (Common Stock) | 527 | 0 | 136991 |
| Jul 16, 2025 | F -- (Common Stock) | 1548 | 0.43 | 1364648 |
| Jul 16, 2025 | M -- (Common Stock) | 5273 | 0 | 1366196 |
| Apr 16, 2025 | F -- (Common Stock) | 1548 | 0.37 | 1349664 |
| Apr 16, 2025 | M -- (Common Stock) | 5274 | 0 | 1351212 |
| Jan 16, 2025 | F -- (Common Stock) | 1828 | 0.89 | 1345938 |
| Jan 16, 2025 | M -- (Common Stock) | 5274 | 0 | 1347766 |
| Oct 16, 2024 | F -- (Common Stock) | 1548 | 2.42 | 1337629 |
| Oct 16, 2024 | M -- (Common Stock) | 5274 | 0 | 1339177 |
| Jul 16, 2024 | F -- (Common Stock) | 1548 | 2.93 | 1333903 |
| Jul 16, 2024 | M -- (Common Stock) | 5274 | 0 | 1335451 |
| Apr 16, 2024 | F -- (Common Stock) | 1548 | 3.7 | 1323458 |
| Apr 16, 2024 | M -- (Common Stock) | 5274 | 0 | 1325006 |
| Jan 16, 2024 | F -- (Common Stock) | 8121 | 1.91 | 1305948 |
| Jan 16, 2024 | M -- (Common Stock) | 23437 | 0 | 1314069 |
| Jan 16, 2024 | F -- (Common Stock) | 7310 | 1.91 | 1319732 |
| Jan 16, 2024 | M -- (Common Stock) | 21094 | 0 | 1327042 |
| Oct 16, 2023 | F -- (Common Stock) | 10395 | 3.24 | 1288187 |
| Oct 16, 2023 | M -- (Common Stock) | 23437 | 0 | 1298582 |
| Jul 16, 2023 | F -- (Common Stock) | 7476 | 5.08 | 1275145 |
| Jul 16, 2023 | M -- (Common Stock) | 23437 | 0 | 1282621 |
| Apr 16, 2023 | F -- (Common Stock) | 6879 | 4.5 | 1256068 |
| Apr 16, 2023 | M -- (Common Stock) | 23437 | 0 | 1262947 |
| Jan 16, 2023 | F -- (Common Stock) | 8122 | 5.1 | 1239510 |
| Jan 16, 2023 | M -- (Common Stock) | 23438 | 0 | 1247632 |
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