Baisong Mei

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
3 Dec 24	EDIT Editas Medicine	Common Stock	Sell	Dispose S	No	No	2.0772	541	1.12 k	133,354
4 Sep 24	EDIT Editas Medicine	Common Stock	Sell	Dispose S	No	No	3.4247	518	1.77 k	133,895
19 Jul 24	EDIT Editas Medicine	Common Stock	Sell	Dispose S	No	No	5.2056	6,619	34.46 k	134,413
4 Jun 24	EDIT Editas Medicine	Common Stock	Sell	Dispose S	No	No	5.4956	511	2.81 k	141,032
4 Mar 24	EDIT Editas Medicine	Common Stock	Sell	Dispose S	No	No	9.4173	20,327	191.43 k	141,543
2 Mar 24	EDIT Editas Medicine	Common Stock	Grant	Acquire A	No	No	0	19,457	0.00	161,870
2 Mar 24	EDIT Editas Medicine	Common Stock	Grant	Acquire A	No	No	0	19,458	0.00	142,413
2 Mar 24	EDIT Editas Medicine	Common Stock	Grant	Acquire A	No	No	0	50,900	0.00	122,955
2 Mar 24	EDIT Editas Medicine	Stock Option (right to buy) Common Stock	Grant	Acquire A	No	No	10.53	152,800	1.61 mm	152,800

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