John L. Green

CIK: 0001709773

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)1 (20.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)3 (60.0%)

Compensation grants

Other (G, F, J, C, D, …)1 (20.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

COGT

Cogent Biosciences, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (5 total)

COGT
Cogent Biosciences, Inc.
Dec 26, 2025
Sale(S)
Direct
77K shares at avg. $38.68$3.0M
COGT
Cogent Biosciences, Inc.
Dec 17, 2025
Award(A)
Direct
50K shares-
COGT
Cogent Biosciences, Inc.
Dec 17, 2025
Award(A)
Direct
300K shares-
COGT
Cogent Biosciences, Inc.
Dec 17, 2025
Tax Payment(F)
Direct
145K shares at avg. $39.45$5.7M
COGT
Cogent Biosciences, Inc.
Jan 23, 2025
Award(A)
Stock Option (Right to Buy)
Direct
270K shares-

		Type	Shares	Price		Ownership
Dec 26, 2025	COGT Cogent Biosciences, Inc.	Sale(S)	77,000	$38.68	$2,978,360	Direct
Dec 17, 2025	COGT Cogent Biosciences, Inc.	Award(A)	50,000	-	-	Direct
Dec 17, 2025	COGT Cogent Biosciences, Inc.	Award(A)	300,000	-	-	Direct
Dec 17, 2025	COGT Cogent Biosciences, Inc.	Tax Payment(F)	145,007	$39.45	$5,720,526	Direct
Jan 23, 2025	COGT Cogent Biosciences, Inc.	Award(A) Stock Option (Right to Buy)	270,000	-	-	Direct

1-5 of 5 transactions

About Green John L.

Green John L. (SEC CIK 0001709773) files insider reports with the SEC as Chief Financial Officer of Cogent Biosciences, Inc. (COGT).

Signal8 holds 3 ownership filings by Green John L., all Form 4s, filed between Jan 27, 2025 and Dec 30, 2025. Those filings report 5 transactions, from Jan 23, 2025 to Dec 26, 2025. Signal8's Form 4 history starts in Sep 2024.

The business address on Green John L.'s filings is in WALTHAM, MA.

Recent filings by Green John L.

Dec 26, 2025: Open-market sale of COGT shares (Form 4, code S).
Dec 17, 2025: Grants or awards of COGT shares (2 lines, Form 4, code A).
Dec 17, 2025: Tax withholding of COGT shares (Form 4, code F).
Jan 23, 2025: Grant or award of COGT derivative securities (Form 4, code A).

Other insiders filing for Cogent Biosciences, Inc. (COGT)

Ferrante Karen Jean, Director
Harwin Peter Evan, Director
CAIN CHRISTOPHER W., Director
Shegog Todd, Director
Morris Arlene, Director
Ros Matthew, Director

How to read Form 4 transaction codes