Tracy Zimmermann - Jan 20, 2023 Form 4 Insider Report for Generation Bio Co. (GBIO)

Role
CHIEF DEVELOPMENT OFFICER
Signature
/s/ Jennifer Elliott, Attorney-in-Fact
Stock symbol
GBIO
Transactions as of
Jan 20, 2023
Transactions value $
$0
Form type
4
Date filed
1/24/2023, 03:13 PM
Previous filing
Jan 18, 2023
Next filing
Apr 18, 2023

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 +53.6K $0.00 53.6K Jan 20, 2023 Common Stock 53.6K $4.71 Direct F1
transaction GBIO Restricted Stock Units Award $0 +26.8K $0.00 26.8K Jan 20, 2023 Common Stock 26.8K Direct F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This option was granted on January 20, 2023. The shares underlying the option vest over four years, with 25% of the shares vesting on January 20, 2024 and the remaining shares vesting in equal quarterly installments thereafter.
F2 Each restricted stock unit represents the right to receive one share of the company's common stock.
F3 The shares underlying the restricted stock units vest over four years, with 25% of the shares vesting on January 15, 2024 and the remaining shares vesting in equal quarterly installments thereafter.