Dirk Kersten

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
9 Dec 24	DYN Dyne Therapeutics	Common Stock	Sell	Dispose S	Yes	No	29.18	34,437	1.00 mm	5,400,545
6 Dec 24	DYN Dyne Therapeutics	Common Stock	Sell	Dispose S	Yes	No	29.34	101,675	2.98 mm	5,434,982
5 Dec 24	DYN Dyne Therapeutics	Common Stock	Sell	Dispose S	Yes	No	29.05	3,806	110.56 k	5,536,657
4 Dec 24	DYN Dyne Therapeutics	Common Stock	Sell	Dispose S	Yes	No	29.39	135,039	3.97 mm	5,540,463
3 Dec 24	DYN Dyne Therapeutics	Common Stock	Sell	Dispose S	Yes	No	29.05	29,732	863.71 k	5,675,502
2 Dec 24	DYN Dyne Therapeutics	Common Stock	Sell	Dispose S	Yes	No	30.37	1,228	37.29 k	5,705,234
2 Dec 24	DYN Dyne Therapeutics	Common Stock	Sell	Dispose S	Yes	No	29.66	79,973	2.37 mm	5,706,462
14 Nov 24	DYN Dyne Therapeutics	Common Stock	Sell	Dispose S	Yes	No	32.82	8,929	293.05 k	5,786,435
13 Nov 24	DYN Dyne Therapeutics	Common Stock	Sell	Dispose S	Yes	Yes	35.24	10,803	380.70 k	62,301
21 Oct 24	DYN Dyne Therapeutics	Common Stock	Sell	Dispose S	Yes	Yes	35.06	121	4.24 k	73,104

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