Company

Cogent Biosciences, Inc.

COGT · CIK 0001622229

SEC FORM 4

$236,468.28

Acquisition (code M) of 41,927 shares at $5.64 per share.

Reporting Person Morris Arlene · Transaction Code M

Traded Aug 27, 2026 · Disclosed Aug 31, 2026

Source: SEC Form 4 · 0001193125-26-377001 · filed 2026-08-31 · View filing →

SEC FORM 4

$9,029.16

Acquisition (code M) of 3,583 shares at $2.52 per share.

Reporting Person Morris Arlene · Transaction Code M

Traded Aug 27, 2026 · Disclosed Aug 31, 2026

Source: SEC Form 4 · 0001193125-26-377001 · filed 2026-08-31 · View filing →

SEC FORM 4

$1,570,830.28

Sale of 42,349 shares at $37.0925 per share.

Reporting Person Morris Arlene · Transaction Code S

Traded Aug 27, 2026 · Disclosed Aug 31, 2026

Source: SEC Form 4 · 0001193125-26-377001 · filed 2026-08-31 · View filing →

SEC FORM 4

$118,662.68

Sale of 3,161 shares at $37.5396 per share.

Reporting Person Morris Arlene · Transaction Code S

Traded Aug 27, 2026 · Disclosed Aug 31, 2026

Source: SEC Form 4 · 0001193125-26-377001 · filed 2026-08-31 · View filing →