Kynam Capital Management, LP [Rocket]

Date	Name	Type	Security	Shares	Price	Value	Ownership	Reported
08/10/2023	2seventy bio, Inc.	Purchase	Common Stock, par value $0.0001 per share	179k	$5.94	$1.1M	See Footnote	08/10/2023
08/10/2023	2seventy bio, Inc.	Purchase	Common Stock, par value $0.0001 per share	50k	$5.80	$290k	See Footnote	08/10/2023
08/10/2023	2seventy bio, Inc.	Purchase	Common Stock, par value $0.0001 per share	100k	$5.85	$585k	See Footnote	08/10/2023
08/10/2023	2seventy bio, Inc.	Purchase	Common Stock, par value $0.0001 per share	100k	$5.96	$596k	See Footnote	08/10/2023
08/10/2023	2seventy bio, Inc.	Purchase	Common Stock, par value $0.0001 per share	86.4k	$5.96	$515k		08/10/2023
08/10/2023	2seventy bio, Inc.	Purchase	Common Stock, par value $0.0001 per share	86.4k	$5.96	$515k	See Footnote	08/10/2023