Skip to content Home / Insiders / Geoff McDonough GM Geoff McDonough Director · Generation Bio Co.
Individual
First filing 2024
Latest filing Feb 9, 2026
Filings 7
Career & filing history Every role Geoff McDonough has reported on a Form 4, taken from the filings. Each Form 4 states the filer's relationship to the issuer: an officer title, a director seat or 10% ownership.
Other insiders active in the same sector No other insider has filed at Geoff McDonough's companies, so these are insiders reporting open-market trades at other companies in the same sector.
More insiders (A-Z) Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is Geoff McDonough? Geoff McDonough is a corporate insider, tracked as Director of Generation Bio Co. (GBIO). InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Geoff McDonough last file a Form 4? The most recent primary Form 4 on record is dated 9 February 2026, one of 7 filings going back to 2024.
Filings (90d)
0
0 companies
Latest filing: Feb 9, 2026
Geoff McDonough is Director of Generation Bio Co. (GBIO). 7 SEC Form 4 filings on record going back to 2024, most recently on 9 February 2026.
Recent transactions 15 The latest 15 SEC Form 4 transactions reported by Geoff McDonough.
All15 Exercises6 Withholding6 Other3
J GBI $GBIO Generation Bio Co. Feb 9, 2026 J - Other acquisition / disposition
27.5K shares
J GBI $GBIO Generation Bio Co. Feb 9, 2026 J - Other acquisition / disposition
22.6K shares
J InsiderAlpha's records for Geoff McDonough go back to 2024: 7 primary Form 4 filings, an average of 2.3 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
GBI $GBIO Generation Bio Co. Feb 9, 2026
J - Other acquisition / disposition
F GBI $GBIO Generation Bio Co. Feb 4, 2026 F - Tax withholding / forfeiture
550 shares @ $5.64$3K
M GBI $GBIO Generation Bio Co. Feb 4, 2026 M - Option exercise
1.6K shares
F GBI $GBIO Generation Bio Co. Jan 16, 2026 F - Tax withholding / forfeiture
137 shares @ $5.64$773
M GBI $GBIO Generation Bio Co. Jan 16, 2026 M - Option exercise
395 shares
F GBI $GBIO Generation Bio Co. Nov 21, 2025 F - Tax withholding / forfeiture
293 shares @ $5.51$2K
M GBI $GBIO Generation Bio Co. Nov 21, 2025 M - Option exercise
659 shares
F GBI $GBIO Generation Bio Co. Oct 15, 2025 F - Tax withholding / forfeiture
155 shares @ $6.71$1K
M GBI $GBIO Generation Bio Co. Oct 15, 2025 M - Option exercise
527 shares
F GBI $GBIO Generation Bio Co. Jul 15, 2025 F - Tax withholding / forfeiture
1.5K shares @ $0.43$659
M GBI $GBIO Generation Bio Co. Jul 15, 2025 M - Option exercise
5.3K shares
F GBI $GBIO Generation Bio Co. Oct 17, 2024 F - Tax withholding / forfeiture
1.5K shares @ $2.42$4K
M GBI $GBIO Generation Bio Co. Oct 17, 2024 M - Option exercise
5.3K shares
