Matthew Stanton - 02 Jan 2024 Form 4 Insider Report for Generation Bio Co. (GBIO)

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	+160,650		$0.000000	160,650	02 Jan 2024	Common Stock	160,650	$1.86	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Id	Content
F1	The option to purchase 160,650 shares of common stock was granted on January 2, 2024. The shares underlying the option vest over four years, with 25% of the shares vesting on January 2, 2025 and the remaining shares vesting in equal quarterly installments thereafter.