Antoinette Paone

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
15 Oct 25	GBIO Generation Bio	Common Stock	Payment of exercise	Dispose F	No	No	6.71	47	315.37	3,658
15 Oct 25	GBIO Generation Bio	Common Stock	Option exercise	Acquire M	No	No	0	159	0.00	3,705
15 Oct 25	GBIO Generation Bio	RSU Common Stock	Option exercise	Dispose M	No	No	0	159	0.00	795
15 Jul 25	GBIO Generation Bio	Common Stock	Payment of exercise	Dispose F	No	No	0.426	468	199.37	35,465
15 Jul 25	GBIO Generation Bio	Common Stock	Option exercise	Acquire M	No	No	0	1,592	0.00	35,933
15 Jul 25	GBIO Generation Bio	RSU Common Stock	Option exercise	Dispose M	No	No	0	1,592	0.00	9,548
15 Apr 25	GBIO Generation Bio	Common Stock	Payment of exercise	Dispose F	No	No	0.3678	468	172.13	23,082
15 Apr 25	GBIO Generation Bio	Common Stock	Option exercise	Acquire M	No	No	0	1,592	0.00	23,550
15 Apr 25	GBIO Generation Bio	RSU Common Stock	Option exercise	Dispose M	No	No	0	1,592	0.00	11,140
15 Jan 25	GBIO Generation Bio	Common Stock	Payment of exercise	Dispose F	No	No	0.888	552	490.18	21,958

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