Tracy Zimmermann - 15 Jan 2024 Form 4 Insider Report for Generation Bio Co. (GBIO)

Role
CHIEF DEVELOPMENT OFFICER
Signature
/s/ Benjamin Waters, Attorney-in-Fact
Issuer symbol
GBIO
Transactions as of
15 Jan 2024
Net transactions value
-$9,353
Form type
4
Filing time
17 Jan 2024, 17:00:58 UTC
Previous filing
17 Oct 2023
Next filing
31 Jan 2024
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 +7,437 +20% 43,822 15 Jan 2024 Direct F1
transaction GBIO Common Stock Tax liability $4,922 -2,577 -5.9% $1.91 41,245 15 Jan 2024 Direct
transaction GBIO Common Stock Options Exercise +6,694 +16% 47,939 15 Jan 2024 Direct F1
transaction GBIO Common Stock Tax liability $4,431 -2,320 -4.8% $1.91 45,619 15 Jan 2024 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 -7,437 -100% $0.000000* 0 15 Jan 2024 Common Stock 7,437 Direct F1, F2
transaction GBIO Restricted Stock Units Options Exercise $0 -6,694 -25% $0.000000 20,081 15 Jan 2024 Common Stock 6,694 Direct F1, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Tracy Zimmermann is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id Content
F1 Each restricted stock unit represents the right to receive one share of the company's common stock.
F2 On January 21, 2022, the reporting person was granted 59,500 restricted stock units. The shares underlying the restricted stock units vest over two years, with 25% of the shares vested on July 15, 2022 and the remaining shares vesting in equal quarterly installments thereafter.
F3 On January 20, 2023, the reporting person was granted 26,775 restricted stock units. The shares underlying the restricted stock units vest over four years, with 25% of the shares vested on January 15, 2024 and the remaining shares vesting in equal quarterly installments thereafter.