Generation Bio Co.

Ownership Transactions Reported by 20 Insiders

Symbol
GBIO on Nasdaq
Industry
Pharmaceutical Preparations
Location
301 Binney Street, Cambridge, MA

Insiders trading volume in the past year

Generation Bio Co. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Atlas Venture Fund X, L.P. 10%+ Owner $15.8M Sep 17, 2021
Geoff Mcdonough Director $3.41M Oct 31, 2025
Matthew Stanton Chief Scientific Officer $1.37M Jan 10, 2025
Matthew Norkunas Chief Financial Officer $880K Jan 10, 2025
Phillip Samayoa Chief Scientific Officer $835K Oct 31, 2025
Antoinette Paone Chief Operating Officer $766K Oct 31, 2025
Douglas Kerr Chief Medical Officer $733K Jan 29, 2024
Yalonda Howze Chief Legal Officer $571K Oct 15, 2025
Anthony G. Quinn Director $566K +$203K +56.1% Jun 4, 2025
Jason P. Rhodes Director $275K Jun 4, 2025
Catherine Stehman-Breen Director $275K Jun 4, 2025
Donald William Nicholson Director $275K Jun 4, 2025
Jeffrey M. Jonas Director $275K Jun 4, 2025
Ronald Harold Wilfred Cooper Director $275K Jun 4, 2025
Gustav Christensen Director $275K Jun 4, 2025
Charles A. Rowland Jr Director $275K Jun 4, 2025
Dannielle Appelhans Director $275K Jun 4, 2025
Tracy Zimmermann Chief Development Officer $93.4K Jan 29, 2024
Kevin John Conway Chief Financial Officer $16.2K Oct 15, 2025
Atlas Venture Associates X, L.P. 10%+ Owner $1.16K Sep 27, 2021

Recent Insider Transactions by Companies or Individuals for Generation Bio Co.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.