Generation Bio Co (GBIO) insider trading
Every open-market stock purchase and sale by Generation Bio Co executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- No open-market insider trades in the last 12 months.
- Last insider buy: Anthony G. Quinn (Insider), $82.5K, 21 months ago.
Last 12 months: insiders bought $0 (0 buys) and sold $0 (0 sales). Last close $5.34 on Feb 6, 2026.
Recent GBIO insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Feb 9, 2026 | Geoff McDonough (Director) | Sold (not open market) | $7.6M |
| Feb 9, 2026 | Geoff McDonough (Director) | Sold (not open market) | $2.4M |
| Feb 9, 2026 | Ronald Harold Wilfred Cooper (Director) | Sold (not open market) | $1.2M |
| Feb 9, 2026 | Geoff McDonough (Director) | Sold (not open market) | $1M |
| Feb 9, 2026 | Donald William Nicholson (Director) | Sold (not open market) | $988K |
| Feb 9, 2026 | Gustav Christensen (Director) | Sold (not open market) | $988K |
| Feb 9, 2026 | Catherine Stehman-Breen (Director) | Sold (not open market) | $988K |
| Feb 9, 2026 | Jeffrey M Jonas (Director) | Sold (not open market) | $988K |
| Feb 9, 2026 | Jason P Rhodes (Director) | Sold (not open market) | $988K |
| Feb 9, 2026 | Charles A Rowland Jr (Director) | Sold (not open market) | $988K |
| Feb 9, 2026 | Anthony G. Quinn (Director) | Sold (not open market) | $988K |
| Feb 9, 2026 | Geoff McDonough (Director) | Sold (not open market) | $942K |
| Feb 9, 2026 | Geoff McDonough (Director) | Sold (not open market) | $835K |
| Feb 9, 2026 | Geoff McDonough (Director) | Sold (not open market) | $794K |
| Feb 9, 2026 | Kevin John Conway (CFO) | Sold (not open market) | $443K |
| Feb 9, 2026 | Yalonda Howze (CEO) | Sold (not open market) | $425K |
| Feb 9, 2026 | Jason P Rhodes (Director) | Sold (not open market) | $399K |
| Feb 9, 2026 | Charles A Rowland Jr (Director) | Sold (not open market) | $399K |
| Feb 9, 2026 | Catherine Stehman-Breen (Director) | Sold (not open market) | $399K |
| Feb 9, 2026 | Jeffrey M Jonas (Director) | Sold (not open market) | $399K |
| Feb 9, 2026 | Gustav Christensen (Director) | Sold (not open market) | $399K |
| Feb 9, 2026 | Donald William Nicholson (Director) | Sold (not open market) | $399K |
| Feb 9, 2026 | Anthony G. Quinn (Director) | Sold (not open market) | $399K |
| Feb 9, 2026 | Geoff McDonough (Director) | Sold (not open market) | $334K |
| Feb 9, 2026 | Kevin John Conway (CFO) | Sold (not open market) | $329K |
Who's trading GBIO
- Dannielle Appelhans, Director: other filings, last Feb 9, 2026
- Atlas Venture Fund X L.P., Insider: other filings, last Feb 9, 2026
- Gustav Christensen, Director: other filings, last Feb 9, 2026
- Kevin John Conway, CFO: other filings, last Feb 9, 2026
- Ronald Harold Wilfred Cooper, Director: other filings, last Feb 9, 2026
- Yalonda Howze, C-suite exec: other filings, last Feb 9, 2026
- Jeffrey M Jonas, Director: other filings, last Feb 9, 2026
- Geoff McDonough, CEO: other filings, last Feb 9, 2026
- Donald William Nicholson, Director: other filings, last Feb 9, 2026
- Anthony G. Quinn, Director: other filings, last Feb 9, 2026
- Jason P Rhodes, Director: other filings, last Feb 9, 2026
- Charles A Rowland Jr, Director: other filings, last Feb 9, 2026
- Catherine Stehman-Breen, Director: other filings, last Feb 9, 2026
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