Nick Leschly

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
6 Jan 25	TSVT 2seventy bio	Common Stock	Sell	Dispose S	No	No	2.7785	892	2.48 k	1,233,606
3 Jan 25	TSVT 2seventy bio	Common Stock	Sell	Dispose S	No	No	2.9359	85,978	252.42 k	1,234,498
6 Nov 24	BLUE bluebird bio	Common Stock	Grant	Acquire A	No	No	0	24,900	0.00	315,839
6 Nov 24	BLUE bluebird bio	Stock Option Common Stock	Grant	Acquire A	No	No	0.44	49,850	21.93 k	49,850
8 Jan 24	TSVT 2seventy bio	Common Stock	Grant	Acquire A	No	No	0	235,000	0.00	1,320,476
8 Jan 24	TSVT 2seventy bio	Stock Option Common Stock	Grant	Acquire A	No	No	3.97	469,000	1.86 mm	469,000
5 Jan 24	TSVT 2seventy bio	Common Stock	Sell	Dispose S	No	No	3.7536	1,554	5.83 k	1,085,476
3 Jan 24	TSVT 2seventy bio	Common Stock	Sell	Dispose S	No	No	3.8685	72,312	279.74 k	1,087,030

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