Matthew Stanton - Dec 1, 2023 Form 4 Insider Report for Generation Bio Co. (GBIO)

Role
CHIEF SCIENTIFIC OFFICER
Signature
/s/ Benjamin Waters, Attorney-in-Fact
Stock symbol
GBIO
Transactions as of
Dec 1, 2023
Transactions value $
$0
Form type
4
Date filed
12/5/2023, 04:30 PM
Previous filing
Oct 17, 2023
Next filing
Jan 3, 2024

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction GBIO Stock Option (right to buy) Award $0 +76.3K $0.00 76.3K Dec 1, 2023 Common Stock 76.3K $1.39 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The option to purchase 76,310 shares of common stock was granted on December 1, 2023. The shares underlying the option vest over two years, with 25% of the shares vesting on June 1, 2024 and the remaining shares vesting in equal quarterly installments thereafter.