Green John L.

3.4

3.4

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings

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Cogent Biosciences, Inc. (COGT)

Transaction date 26 Dec 2025

Sale

Price

91.79

Quantity 29,722 +4.8%

Value US$4,922,657

Comments Filing

Cogent Biosciences, Inc. (COGT)

Transaction date 26 Dec 2025

Proposed sale

Price

238.74

Quantity 68,188

Value US$3,495,571

Comments Filing

Cogent Biosciences, Inc. (COGT)

Transaction date 26 Apr 2021

Sale

Price

373.53

Quantity 55,760 -36.9%

Value US$3,828,284

Comments Filing

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value
2025-12-30	2025-12-26	Cogent Biosciences, Inc. (COGT)	S Sale	29,722 +4.8% 91.79 US$4,922,657	29,722 +4.8%	91.79	US$4,922,657
2025-12-29	2025-12-26	Cogent Biosciences, Inc. (COGT)	PrS Proposed sale	68,188 238.74 US$3,495,571	68,188	238.74	US$3,495,571
2021-04-28	2021-04-26	Cogent Biosciences, Inc. (COGT)	S Sale	55,760 -36.9% 373.53 US$3,828,284	55,760 -36.9%	373.53	US$3,828,284