Marc Cohen

Currently holds positions in Korro Bio Inc and C4 Therapeutics Inc

3.3

3.3

Position	Company	Period
Chairman of the Board	Korro Bio Inc	None -
Founder, Executive Chairman	C4 Therapeutics Inc	None -

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value
2020-10-06	2020-10-06	C4 Therapeutics Inc (CCCC)	B Purchase	16,538 +42.0% 55.29 US$280,178	16,538 +42.0%	55.29	US$280,178
2019-10-08	2019-10-07	Korro Bio Inc (KRRO)	B Purchase	20,527 +42.3% 153.73 US$3,222,775	20,527 +42.3%	153.73	US$3,222,775
2004-05-05	2004-05-04	OPNET Technologies LLC (OPNT)	PlS Planned sale	98,425 +23.0% 144.52 US$4,506,974	98,425 +23.0%	144.52	US$4,506,974
2004-05-05	2004-05-03	OPNET Technologies LLC (OPNT)	PlS Planned sale	2,500 -0.1% 14.87 US$37,174	2,500 -0.1%	14.87	US$37,174