Casdin Capital, LLC [Rocket]

Date	Name	Symbol	Type	Security	Shares	Price	Value	Ownership	Reported
06/16/2020	Generation Bio Co.	GBIO	Conversion	Series C Preferred Stock	455.5k	$0.00	$0	See Footnote	06/16/2020
06/16/2020	Generation Bio Co.	GBIO	Conversion	Series B Preferred Stock	1.1M	$0.00	$0	See Footnote	06/16/2020
06/16/2020	Generation Bio Co.	GBIO	Purchase	Common Stock	650k	$19.00	$12.4M	See Footnote	06/16/2020
06/16/2020	Generation Bio Co.	GBIO	Conversion	Common Stock	961.2k	$0.00	$0	See Footnote	06/16/2020
07/22/2019	Fulcrum Therapeutics, Inc.	FULC	Purchase	Common Stock	125k	$16.00	$2M	See footnote	07/22/2019
07/22/2019	Fulcrum Therapeutics, Inc.	FULC	Conversion	Common Stock	464.3k	$0.00	$0	See footnote	07/22/2019
07/22/2019	Fulcrum Therapeutics, Inc.	FULC	Conversion	Series B Preferred Stock	3.2M	$0.00	$0	See footnote	07/22/2019
07/22/2019	Fulcrum Therapeutics, Inc.	FULC	Purchase	Common Stock	5k	$14.50	$72.5k	See footnote	07/22/2019
07/22/2019	Fulcrum Therapeutics, Inc.	FULC	Purchase	Common Stock	10k	$14.50	$145k	See footnote	07/22/2019
07/23/2018	CONSTELLATION PHARMACEUTICALS INC	CNST	Conversion	Common Stock	345.8k	$0.00	$0	See footnote	07/23/2018
07/23/2018	CONSTELLATION PHARMACEUTICALS INC	CNST	Purchase	Common Stock	266.7k	$15.00	$4M	See footnote	07/23/2018
07/23/2018	CONSTELLATION PHARMACEUTICALS INC	CNST	Conversion	Common Stock	159k	$0.00	$0	See footnote	07/23/2018
07/23/2018	CONSTELLATION PHARMACEUTICALS INC	CNST	Conversion	Series E Preferred Stock	1.3M	$0.00	$0	See footnote	07/23/2018
07/23/2018	CONSTELLATION PHARMACEUTICALS INC	CNST	Conversion	Series E-1 Preferred Stock	342.4k	$0.00	$0	See footnote	07/23/2018
07/23/2018	CONSTELLATION PHARMACEUTICALS INC	CNST	Conversion	Series F Preferred Stock	1.8M	$0.00	$0	See footnote	07/23/2018