{"cik":1622229,"taxonomy":"us-gaap","tag":"ShareBasedCompensation","label":"Share-based Payment Arrangement, Noncash Expense","description":"Amount of noncash expense for share-based payment arrangement.","entityName":"Cogent Biosciences, Inc.","units":{"USD":[{"start":"2017-01-01","end":"2017-03-31","val":300000,"accn":"0001193125-18-161541","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-14","frame":"CY2017Q1"},{"start":"2017-01-01","end":"2017-06-30","val":582000,"accn":"0001193125-18-247281","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-13"},{"start":"2017-01-01","end":"2017-09-30","val":881000,"accn":"0001193125-18-324954","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-13"},{"start":"2017-01-01","end":"2017-12-31","val":1341000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28","frame":"CY2017"},{"start":"2018-01-01","end":"2018-03-31","val":479000,"accn":"0001193125-18-161541","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-14"},{"start":"2018-01-01","end":"2018-03-31","val":479000,"accn":"0001193125-19-144768","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-13"},{"start":"2018-01-01","end":"2018-03-31","val":479000,"accn":"0001564590-19-031485","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-12"},{"start":"2018-01-01","end":"2018-03-31","val":479000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12","frame":"CY2018Q1"},{"start":"2018-01-01","end":"2018-06-30","val":1326000,"accn":"0001193125-18-247281","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-13"},{"start":"2018-01-01","end":"2018-06-30","val":1326000,"accn":"0001564590-19-031485","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-12"},{"start":"2018-04-01","end":"2018-06-30","val":847000,"accn":"0001564590-19-031485","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-12"},{"start":"2018-04-01","end":"2018-06-30","val":847000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12","frame":"CY2018Q2"},{"start":"2018-01-01","end":"2018-09-30","val":2186000,"accn":"0001193125-18-324954","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-13"},{"start":"2018-01-01","end":"2018-09-30","val":2186000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12"},{"start":"2018-07-01","end":"2018-09-30","val":860000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12","frame":"CY2018Q3"},{"start":"2018-01-01","end":"2018-12-31","val":3088000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28"},{"start":"2018-01-01","end":"2018-12-31","val":3088000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26","frame":"CY2018"},{"start":"2019-01-01","end":"2019-03-31","val":726000,"accn":"0001193125-19-144768","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-13"},{"start":"2019-01-01","end":"2019-03-31","val":726000,"accn":"0001564590-19-031485","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-12"},{"start":"2019-01-01","end":"2019-03-31","val":726000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12"},{"start":"2019-01-01","end":"2019-03-31","val":726000,"accn":"0001564590-20-024313","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-11","frame":"CY2019Q1"},{"start":"2019-01-01","end":"2019-06-30","val":1611000,"accn":"0001564590-19-031485","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-12"},{"start":"2019-01-01","end":"2019-06-30","val":1611000,"accn":"0001564590-20-039357","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-11"},{"start":"2019-04-01","end":"2019-06-30","val":885000,"accn":"0001564590-19-031485","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-12"},{"start":"2019-04-01","end":"2019-06-30","val":885000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12","frame":"CY2019Q2"},{"start":"2019-01-01","end":"2019-09-30","val":2399000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12"},{"start":"2019-01-01","end":"2019-09-30","val":2399000,"accn":"0001564590-20-052593","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-09"},{"start":"2019-07-01","end":"2019-09-30","val":788000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12","frame":"CY2019Q3"},{"start":"2019-01-01","end":"2019-12-31","val":3241000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26"},{"start":"2019-01-01","end":"2019-12-31","val":3241000,"accn":"0001564590-21-013325","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-16","frame":"CY2019"},{"start":"2020-01-01","end":"2020-03-31","val":769000,"accn":"0001564590-20-024313","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-11"},{"start":"2020-01-01","end":"2020-03-31","val":769000,"accn":"0001564590-21-026737","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-12","frame":"CY2020Q1"},{"start":"2020-01-01","end":"2020-06-30","val":1639000,"accn":"0001564590-20-039357","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-11"},{"start":"2020-01-01","end":"2020-06-30","val":1639000,"accn":"0001564590-21-044445","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-16"},{"start":"2020-01-01","end":"2020-09-30","val":5151000,"accn":"0001564590-20-052593","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-09"},{"start":"2020-01-01","end":"2020-09-30","val":5151000,"accn":"0001564590-21-055947","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-10"},{"start":"2020-01-01","end":"2020-12-31","val":6017000,"accn":"0001564590-21-013325","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-16"},{"start":"2020-01-01","end":"2020-12-31","val":6017000,"accn":"0001564590-22-010238","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-15","frame":"CY2020"},{"start":"2021-01-01","end":"2021-03-31","val":1781000,"accn":"0001564590-21-026737","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-12"},{"start":"2021-01-01","end":"2021-03-31","val":1781000,"accn":"0001564590-22-019089","fy":2022,"fp":"Q1","form":"10-Q","filed":"2022-05-10","frame":"CY2021Q1"},{"start":"2021-01-01","end":"2021-06-30","val":4371000,"accn":"0001564590-21-044445","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-16"},{"start":"2021-01-01","end":"2021-06-30","val":4371000,"accn":"0000950170-22-015760","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-09"},{"start":"2021-01-01","end":"2021-09-30","val":7834000,"accn":"0001564590-21-055947","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-10"},{"start":"2021-01-01","end":"2021-09-30","val":7834000,"accn":"0000950170-22-024685","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-14"},{"start":"2021-01-01","end":"2021-12-31","val":11686000,"accn":"0001564590-22-010238","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-15"},{"start":"2021-01-01","end":"2021-12-31","val":11686000,"accn":"0000950170-23-007729","fy":2022,"fp":"FY","form":"10-K","filed":"2023-03-14"},{"start":"2021-01-01","end":"2021-12-31","val":11686000,"accn":"0000950170-24-019770","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-26","frame":"CY2021"},{"start":"2022-01-01","end":"2022-03-31","val":4175000,"accn":"0001564590-22-019089","fy":2022,"fp":"Q1","form":"10-Q","filed":"2022-05-10"},{"start":"2022-01-01","end":"2022-03-31","val":4175000,"accn":"0000950170-23-019166","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-09","frame":"CY2022Q1"},{"start":"2022-01-01","end":"2022-06-30","val":8709000,"accn":"0000950170-22-015760","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-09"},{"start":"2022-01-01","end":"2022-06-30","val":8709000,"accn":"0000950170-23-039394","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-08"},{"start":"2022-01-01","end":"2022-09-30","val":13331000,"accn":"0000950170-22-024685","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-14"},{"start":"2022-01-01","end":"2022-09-30","val":13331000,"accn":"0000950170-23-059769","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-11-07"},{"start":"2022-01-01","end":"2022-12-31","val":18368000,"accn":"0000950170-23-007729","fy":2022,"fp":"FY","form":"10-K","filed":"2023-03-14"},{"start":"2022-01-01","end":"2022-12-31","val":18368000,"accn":"0000950170-24-019770","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-26"},{"start":"2022-01-01","end":"2022-12-31","val":18368000,"accn":"0000950170-25-026115","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-25","frame":"CY2022"},{"start":"2023-01-01","end":"2023-03-31","val":5850000,"accn":"0000950170-23-019166","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-09"},{"start":"2023-01-01","end":"2023-03-31","val":5850000,"accn":"0000950170-24-053977","fy":2024,"fp":"Q1","form":"10-Q","filed":"2024-05-07","frame":"CY2023Q1"},{"start":"2023-01-01","end":"2023-06-30","val":13013000,"accn":"0000950170-23-039394","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-08"},{"start":"2023-01-01","end":"2023-06-30","val":13013000,"accn":"0000950170-24-091229","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-08-06"},{"start":"2023-01-01","end":"2023-09-30","val":21770000,"accn":"0000950170-23-059769","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-11-07"},{"start":"2023-01-01","end":"2023-09-30","val":21770000,"accn":"0000950170-24-124712","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-12"},{"start":"2023-01-01","end":"2023-12-31","val":30621000,"accn":"0000950170-24-019770","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-26"},{"start":"2023-01-01","end":"2023-12-31","val":30621000,"accn":"0000950170-25-026115","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-25"},{"start":"2023-01-01","end":"2023-12-31","val":30621000,"accn":"0001193125-26-053334","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-17","frame":"CY2023"},{"start":"2024-01-01","end":"2024-03-31","val":9393000,"accn":"0000950170-24-053977","fy":2024,"fp":"Q1","form":"10-Q","filed":"2024-05-07"},{"start":"2024-01-01","end":"2024-03-31","val":9393000,"accn":"0000950170-25-064005","fy":2025,"fp":"Q1","form":"10-Q","filed":"2025-05-06","frame":"CY2024Q1"},{"start":"2024-01-01","end":"2024-06-30","val":19405000,"accn":"0000950170-24-091229","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-08-06"},{"start":"2024-01-01","end":"2024-06-30","val":19405000,"accn":"0000950170-25-102440","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-08-05"},{"start":"2024-01-01","end":"2024-09-30","val":29763000,"accn":"0000950170-24-124712","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-12"},{"start":"2024-01-01","end":"2024-09-30","val":29763000,"accn":"0001193125-25-272334","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-07"},{"start":"2024-01-01","end":"2024-12-31","val":39740000,"accn":"0000950170-25-026115","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-25"},{"start":"2024-01-01","end":"2024-12-31","val":39740000,"accn":"0001193125-26-053334","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-17","frame":"CY2024"},{"start":"2025-01-01","end":"2025-03-31","val":10008000,"accn":"0000950170-25-064005","fy":2025,"fp":"Q1","form":"10-Q","filed":"2025-05-06"},{"start":"2025-01-01","end":"2025-03-31","val":10008000,"accn":"0001193125-26-205170","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-05","frame":"CY2025Q1"},{"start":"2025-01-01","end":"2025-06-30","val":19724000,"accn":"0000950170-25-102440","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-08-05"},{"start":"2025-01-01","end":"2025-09-30","val":30328000,"accn":"0001193125-25-272334","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-07"},{"start":"2025-01-01","end":"2025-12-31","val":46079000,"accn":"0001193125-26-053334","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-17","frame":"CY2025"},{"start":"2026-01-01","end":"2026-03-31","val":16908000,"accn":"0001193125-26-205170","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-05","frame":"CY2026Q1"}]}}