Antoinette Paone

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
15 Jan 25	GBIO Generation Bio	Common Stock	Payment of exercise	Dispose F	No	No	0.888	552	490.18	21,958
15 Jan 25	GBIO Generation Bio	Common Stock	Option exercise	Acquire M	No	No	0	1,592	0.00	22,510
15 Jan 25	GBIO Generation Bio	RSU Common Stock	Option exercise	Dispose M	No	No	0	1,592	0.00	12,732
10 Jan 25	GBIO Generation Bio	Stock Option (right to buy) Common Stock	Grant	Acquire A	No	No	0.926	251,030	232.45 k	251,030
15 Oct 24	GBIO Generation Bio	Common Stock	Payment of exercise	Dispose F	No	No	2.42	468	1.13 k	16,055
15 Oct 24	GBIO Generation Bio	Common Stock	Option exercise	Acquire M	No	No	0	1,592	0.00	16,523
15 Oct 24	GBIO Generation Bio	RSU Common Stock	Option exercise	Dispose M	No	No	0	1,592	0.00	14,324
15 Jul 24	GBIO Generation Bio	Common Stock	Payment of exercise	Dispose F	No	No	2.93	468	1.37 k	14,931
15 Jul 24	GBIO Generation Bio	Common Stock	Option exercise	Acquire M	No	No	0	1,592	0.00	15,399
15 Jul 24	GBIO Generation Bio	RSU Common Stock	Option exercise	Dispose M	No	No	0	1,592	0.00	15,916

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.