Insider · CIK 0001732701
Geoff McDonough
Files at GBIO (Generation Bio Co.). First filing -, latest -.
Geoff McDonough files SEC Form 4 as CEO, president and director at GBIO (Generation Bio Co.). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.
A track record needs three past buys with six months of prices behind them; Geoff McDonough has 0, so none is measured yet.
Signals
This insider’s open-market buys and sells, scored.
Transactions
Every row this insider has filed, 35 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Feb 9, 2026 | GBIO Generation Bio Co. | UTender of shares Common Stock | -138,492 | - | - | 0 | Feb 9, 2026 |
| Feb 9, 2026 | GBIO Generation Bio Co. | UTender of shares Common Stockindirect: By 2018 Trust | -22,646 | - | - | 0 | Feb 9, 2026 |
| Feb 9, 2026 | GBIO Generation Bio Co. | UTender of shares Common Stockindirect: By 2020 Trust | -27,500 | - | - | 0 | Feb 9, 2026 |
| Feb 9, 2026 | GBIO Generation Bio Co. | DDisposition to issuer Stock Option (right to buy)derivative | -19,903 | - | - | 0 | Feb 9, 2026 |
| Feb 9, 2026 | GBIO Generation Bio Co. | DDisposition to issuer Stock Option (right to buy)derivative | -25,099 | - | - | 0 | Feb 9, 2026 |
| Feb 9, 2026 | GBIO Generation Bio Co. | DDisposition to issuer Stock Option (right to buy)derivative | -37,499 | - | - | 0 | Feb 9, 2026 |
| Feb 9, 2026 | GBIO Generation Bio Co. | DDisposition to issuer Stock Option (right to buy)derivative | -50,624 | - | - | 0 | Feb 9, 2026 |
| Feb 9, 2026 | GBIO Generation Bio Co. | DDisposition to issuer Stock Option (right to buy)derivative | -90,168 | - | - | 0 | Feb 9, 2026 |
| Feb 9, 2026 | GBIO Generation Bio Co. | DDisposition to issuer Stock Option (right to buy)derivative | -16,874 | - | - | 0 | Feb 9, 2026 |
| Feb 9, 2026 | GBIO Generation Bio Co. | DDisposition to issuer Stock Option (right to buy)derivative | -24,046 | - | - | 0 | Feb 9, 2026 |
| Feb 2, 2026 | GBIO Generation Bio Co. | MOption exercise Common Stock | +1,582 | - | - | 139,042 | Feb 4, 2026 |
| Feb 2, 2026 | GBIO Generation Bio Co. | FTax withholding Common Stock | -550 | $5.64 | $3,102 | 138,492 | Feb 4, 2026 |
| Feb 2, 2026 | GBIO Generation Bio Co. | MOption exercise Restricted Stock Unitsderivative | -1,582 | $0.00 | $0 | 0 | Feb 4, 2026 |
| Jan 15, 2026 | GBIO Generation Bio Co. | MOption exercise Common Stock | +395 | - | - | 137,597 | Jan 16, 2026 |
| Jan 15, 2026 | GBIO Generation Bio Co. | FTax withholding Common Stock | -137 | $5.64 | $773 | 137,460 | Jan 16, 2026 |
| Jan 15, 2026 | GBIO Generation Bio Co. | MOption exercise Restricted Stock Unitsderivative | +395 | $0.00 | $0 | 1,582 | Jan 16, 2026 |
| Oct 31, 2025 | GBIO Generation Bio Co. | MOption exercise Common Stock | +659 | - | - | 137,495 | Nov 21, 2025 |
| Oct 31, 2025 | GBIO Generation Bio Co. | FTax withholding Common Stock | -293 | $5.51 | $1,614 | 137,202 | Nov 21, 2025 |
| Oct 31, 2025 | GBIO Generation Bio Co. | MOption exercise Restricted Stock Unitsderivative | -659 | $0.00 | $0 | 1,977 | Nov 21, 2025 |
| Oct 15, 2025 | GBIO Generation Bio Co. | MOption exercise Common Stock | +527 | - | - | 136,991 | Oct 17, 2025 |
| Oct 15, 2025 | GBIO Generation Bio Co. | FTax withholding Common Stock | -155 | $6.71 | $1,040 | 136,836 | Oct 17, 2025 |
| Oct 15, 2025 | GBIO Generation Bio Co. | MOption exercise Restricted Stock Unitsderivative | -527 | $0.00 | $0 | 2,636 | Oct 17, 2025 |
| Jul 15, 2025 | GBIO Generation Bio Co. | MOption exercise Common Stock | +5,273 | - | - | 1,366,196 | Jul 17, 2025 |
| Jul 15, 2025 | GBIO Generation Bio Co. | FTax withholding Common Stock | -1,548 | $0.43 | $659 | 1,364,648 | Jul 17, 2025 |
| Jul 15, 2025 | GBIO Generation Bio Co. | MOption exercise Restricted Stock Unitsderivative | -5,273 | $0.00 | $0 | 31,638 | Jul 17, 2025 |
| Apr 15, 2025 | GBIO Generation Bio Co. | MOption exercise Common Stock | +5,274 | - | - | 1,351,212 | Apr 17, 2025 |
| Apr 15, 2025 | GBIO Generation Bio Co. | FTax withholding Common Stock | -1,548 | $0.37 | $569 | 1,349,664 | Apr 17, 2025 |
| Apr 15, 2025 | GBIO Generation Bio Co. | MOption exercise Restricted Stock Unitsderivative | -5,274 | $0.00 | $0 | 36,911 | Apr 17, 2025 |
| Jan 15, 2025 | GBIO Generation Bio Co. | MOption exercise Common Stock | +5,274 | - | - | 1,347,766 | Jan 17, 2025 |
| Jan 15, 2025 | GBIO Generation Bio Co. | FTax withholding Common Stock | -1,828 | $0.89 | $1,623 | 1,345,938 | Jan 17, 2025 |
| Jan 15, 2025 | GBIO Generation Bio Co. | MOption exercise Restricted Stock Unitsderivative | -5,274 | $0.00 | $0 | 42,185 | Jan 17, 2025 |
| Jan 10, 2025 | GBIO Generation Bio Co. | AGrant or award Stock Option (right to buy)derivative | +901,690 | $0.00 | $0 | 901,690 | Jan 14, 2025 |
| Oct 15, 2024 | GBIO Generation Bio Co. | MOption exercise Common Stock | +5,274 | - | - | 1,339,177 | Oct 17, 2024 |
| Oct 15, 2024 | GBIO Generation Bio Co. | FTax withholding Common Stock | -1,548 | $2.42 | $3,746 | 1,337,629 | Oct 17, 2024 |
| Oct 15, 2024 | GBIO Generation Bio Co. | MOption exercise Restricted Stock Unitsderivative | -5,274 | $0.00 | $0 | 47,459 | Oct 17, 2024 |
Questions about Geoff McDonough
Answered from the filings on this page, as of the latest one.
Is Geoff McDonough buying or selling?
Geoff McDonough has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.
How did Geoff McDonough's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Geoff McDonough has 0.
Where does Geoff McDonough file Form 4?
Geoff McDonough has filed Form 4 at GBIO (Generation Bio Co.) as PRESIDENT AND CEO. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.