Yalonda Howze - 15 Apr 2025 Form 4 Insider Report for Generation Bio Co. (GBIO)

Role
CHIEF LEGAL OFFICER
Signature
/s/ Shawna-Gay White, Attorney-in-Fact
Issuer symbol
GBIO
Transactions as of
15 Apr 2025
Net transactions value
-$362
Form type
4
Filing time
17 Apr 2025, 16:05:10 UTC
Previous filing
17 Jan 2025
Next filing
17 Jul 2025
SEC
View on sec.gov

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GBIO Common Stock Options Exercise +3,347 +20% 19,720 15 Apr 2025 Direct F1
transaction GBIO Common Stock Tax liability $362 -983 -5% $0.3678 18,737 15 Apr 2025 Direct

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 Restricted Stock Units Options Exercise $0 -3,347 -11% $0.000000 26,774 15 Apr 2025 Common Stock 3,347 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each restricted stock unit represents the right to receive one share of the company's common stock.
F2 The grant of 53,550 restricted stock units was made on April 5, 2023. The shares underlying the restricted stock units vest over four years, with 25% of the shares vested on April 15, 2024 and the remaining shares vesting in equal quarterly installments thereafter.