SCHEDULE 13G

COGENT BIOSCIENCES INC

Common Stock, $0.001 Par Value · CUSIP: 19240Q201

Event date: 2025-07-07

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Commodore Capital LP

  Shares: 6,408,060.00 · Class: 5.5%

• Commodore Capital Master LP

  Shares: 6,408,060.00 · Class: 5.5%

• Robert Egen Atkinson

  Shares: 6,408,060.00 · Class: 5.5%

• Michael Kramarz

  Shares: 6,408,060.00 · Class: 5.5%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.