Douglas Kerr

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
3 Sep 24	DYN Dyne Therapeutics	Common Stock	Grant	Acquire A	No	No	0	47,500	0.00	47,500
3 Sep 24	DYN Dyne Therapeutics	Stock Option Common Stock	Grant	Acquire A	No	No	31.94	150,300	4.80 mm	150,300
29 Jan 24	GBIO Generation Bio	Common Stock	Payment of exercise	Dispose F	No	No	1.9	1,476	2.80 k	385,628
29 Jan 24	GBIO Generation Bio	Common Stock	Option exercise	Acquire M	No	No	0	5,021	0.00	387,104
29 Jan 24	GBIO Generation Bio	RSU Common Stock	Option exercise	Dispose M	No	No	0	5,021	0.00	0
15 Jan 24	GBIO Generation Bio	Common Stock	Payment of exercise	Dispose F	No	No	1.91	2,320	4.43 k	382,083
15 Jan 24	GBIO Generation Bio	Common Stock	Option exercise	Acquire M	No	No	0	6,694	0.00	384,403
15 Jan 24	GBIO Generation Bio	Common Stock	Payment of exercise	Dispose F	No	No	1.91	2,577	4.92 k	377,709
15 Jan 24	GBIO Generation Bio	Common Stock	Option exercise	Acquire M	No	No	0	7,437	0.00	380,286
15 Jan 24	GBIO Generation Bio	RSU Common Stock	Option exercise	Dispose M	No	No	0	6,694	0.00	20,081

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