Company · CIK 0001622229 · SIC 2834 — Pharmaceutical Preparations · Nasdaq
Cogent Biosciences, Inc. · COGT
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 27, 2026 SForm 4 → | Aug 31, 5:01 pm EDT | Arlene MorrisDirector | 45,510 | $37.12 | $1,689,493 | 0 | −100% | 10b5-1 |
| Aug 27, 2026 MForm 4 → | Aug 31, 5:01 pm EDT | Arlene MorrisDirector | 45,510 | $5.39 | $245,497 | 45,510 | — | 10b5-1 |
| Feb 25, 2019 SForm 4 → | Feb 26, 4:36 pm EST | Seth EttenbergChief Scientific Officer | 11,485 | $4.25 | $48,853 | 0 | −100% | plan? |
| Feb 25, 2019 MForm 4 → | Feb 26, 4:36 pm EST | Seth EttenbergChief Scientific Officer | 11,485 | $0.18 | $2,067 | 11,485 | — | plan? |
| Dec 26, 2018 SForm 4 → | Dec 28, 7:09 pm EST | Seth EttenbergChief Scientific Officer | 11,485 | $4.05 | $46,487 | 0 | −100% | plan? |
| Dec 26, 2018 MForm 4 → | Dec 28, 7:09 pm EST | Seth EttenbergChief Scientific Officer | 11,485 | $0.18 | $2,067 | 11,485 | — | plan? |
| Nov 26, 2018 SForm 4 → | Nov 26, 7:54 pm EST | Seth EttenbergChief Scientific Officer | 11,485 | $7.00 | $80,444 | 0 | −100% | plan? |
| Nov 26, 2018 MForm 4 → | Nov 26, 7:54 pm EST | Seth EttenbergChief Scientific Officer | 11,485 | $0.18 | $2,067 | 11,485 | — | plan? |
| Oct 25, 2018 SForm 4 → | Oct 29, 4:41 pm EDT | Seth EttenbergChief Scientific Officer | 11,485 | $8.46 | $97,201 | 0 | −100% | plan? |
| Oct 25, 2018 MForm 4 → | Oct 29, 4:41 pm EDT | Seth EttenbergChief Scientific Officer | 11,485 | $0.18 | $2,067 | 11,485 | — | plan? |
| Sep 25, 2018 SForm 4 → | Sep 26, 6:41 pm EDT | Seth EttenbergChief Scientific Officer | 11,485 | $12.47 | $143,181 | 0 | −100% | plan? |
| Sep 25, 2018 MForm 4 → | Sep 26, 6:41 pm EDT | Seth EttenbergChief Scientific Officer | 11,485 | $0.18 | $2,067 | 11,485 | — | plan? |
| Apr 3, 2018 CForm 4 → | Apr 5, 12:28 pm EDT | FIL LtdOther | 1,138,274 | — | — | 1,138,274 | — | plan? |
| Apr 3, 2018 PForm 4 → | Apr 5, 12:27 pm EDT | FMR LLCOther | 94,052 | $12.00 | $1,128,624 | 452,115 | +26.3% | plan? |
| Apr 3, 2018 CForm 4 → | Apr 5, 12:27 pm EDT | FMR LLCOther | 2,318,538 | — | — | 23,240 | — | plan? |
| Apr 3, 2018 PForm 4 → | Apr 3, 5:11 pm EDT | Atlas Venture Fund IX, L.P. +210% Owner | 94,052 | $12.00 | $1,128,624 | 3,361,535 | +2.88% | plan? |
| Apr 3, 2018 CForm 4 → | Apr 3, 5:11 pm EDT | Atlas Venture Fund IX, L.P. +210% Owner | 3,267,483 | — | — | 3,267,483 | — | plan? |
| Apr 3, 2018 PForm 4 → | Apr 3, 5:07 pm EDT | Bruce BoothDirector | 94,052 | $12.00 | $1,128,624 | 3,361,535 | +2.88% | plan? |
| Apr 3, 2018 CForm 4 → | Apr 3, 5:07 pm EDT | Bruce BoothDirector | 3,267,483 | — | — | 3,267,483 | — | plan? |
| Apr 3, 2018 PForm 4 → | Apr 3, 4:30 pm EDT | Liam RatcliffeDirector | 550,000 | $12.00 | $6,600,000 | 897,773 | +158% | plan? |
| Apr 3, 2018 CForm 4 → | Apr 3, 4:30 pm EDT | Liam RatcliffeDirector | 1,245,545 | — | — | 622,773 | — | plan? |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 27, 2026 MForm 4 → | Aug 31, 5:01 pm EDT | Arlene MorrisDirector | 45,510 | — | — | 0 | — | 10b5-1 |
| Jul 1, 2026 AForm 4 → | Jul 6, 4:30 pm EDT | Karen Jean FerranteDirector | 627 | — | — | 627 | — | |
| Jun 9, 2026 AForm 4 → | Jun 11, 4:30 pm EDT | Peter Evan HarwinDirector | 17,901 | — | — | 17,901 | — | |
| Jun 9, 2026 AForm 4 → | Jun 11, 4:30 pm EDT | Karen Jean FerranteDirector | 17,901 | — | — | 17,901 | — | |
| Jun 9, 2026 AForm 4 → | Jun 11, 4:30 pm EDT | Christopher W. CainDirector | 17,901 | — | — | 17,901 | — | |
| Jun 9, 2026 AForm 4 → | Jun 11, 4:30 pm EDT | Todd ShegogDirector | 17,901 | — | — | 17,901 | — | |
| Jun 9, 2026 AForm 4 → | Jun 11, 4:30 pm EDT | Arlene MorrisDirector | 17,901 | — | — | 17,901 | — | |
| Jun 9, 2026 AForm 4 → | Jun 11, 4:30 pm EDT | Matthew RosDirector | 17,901 | — | — | 17,901 | — | |
| Feb 25, 2019 MForm 4 → | Feb 26, 4:36 pm EST | Seth EttenbergChief Scientific Officer | 11,485 | — | — | 340,630 | — | |
| Jan 2, 2019 AForm 4 → | Jan 4, 4:57 pm EST | Liam RatcliffeDirector | 4,860 | $2.70 | $13,122 | 4,860 | — | |
| Jan 2, 2019 AForm 4 → | Jan 4, 4:55 pm EST | Robert J PerezDirector | 4,397 | $2.70 | $11,872 | 4,397 | — | |
| Jan 2, 2019 AForm 4 → | Jan 4, 4:54 pm EST | Karen Jean FerranteDirector | 4,073 | $2.70 | $10,997 | 4,073 | — | |
| Jan 2, 2019 AForm 4 → | Jan 4, 4:52 pm EST | Bruce BoothDirector | 6,757 | $2.70 | $18,244 | 6,757 | — | |
| Jan 2, 2019 AForm 4 → | Jan 4, 4:50 pm EST | Jorn AldagDirector | 4,999 | $2.70 | $13,497 | 4,999 | — | |
| Dec 26, 2018 MForm 4 → | Dec 28, 7:09 pm EST | Seth EttenbergChief Scientific Officer | 11,485 | — | — | 352,115 | — | |
| Nov 26, 2018 MForm 4 → | Nov 26, 7:54 pm EST | Seth EttenbergChief Scientific Officer | 11,485 | — | — | 363,600 | — | |
| Oct 25, 2018 MForm 4 → | Oct 29, 4:41 pm EDT | Seth EttenbergChief Scientific Officer | 11,485 | — | — | 375,085 | — | |
| Oct 1, 2018 AForm 4 → | Oct 3, 5:19 pm EDT | Liam RatcliffeDirector | 2,111 | $6.22 | $13,130 | 2,111 | — | |
| Oct 1, 2018 AForm 4 → | Oct 3, 5:16 pm EDT | Robert J PerezDirector | 1,910 | $6.22 | $11,880 | 1,910 | — | |
| Oct 1, 2018 AForm 4 → | Oct 3, 5:14 pm EDT | Karen Jean FerranteDirector | 1,769 | $6.22 | $11,003 | 1,769 | — | |
| Oct 1, 2018 AForm 4 → | Oct 3, 5:12 pm EDT | Bruce BoothDirector | 2,935 | $6.22 | $18,256 | 2,935 | — | |
| Oct 1, 2018 AForm 4 → | Oct 3, 5:10 pm EDT | Jorn AldagDirector | 2,171 | $6.22 | $13,504 | 2,171 | — | |
| Sep 24, 2018 MForm 4 → | Sep 26, 6:41 pm EDT | Seth EttenbergChief Scientific Officer | 11,485 | — | — | 386,570 | — | |
| Jul 26, 2018 AForm 4 → | Sep 26, 6:47 pm EDT | Liam RatcliffeDirector | 1,504 | $8.72 | $13,115 | 1,504 | — | late |
| Jul 26, 2018 AForm 4 → | Sep 26, 6:46 pm EDT | Robert J PerezDirector | 1,361 | $8.72 | $11,868 | 1,361 | — | late |
| Jul 26, 2018 AForm 4 → | Sep 26, 6:43 pm EDT | Karen Jean FerranteDirector | 1,261 | $8.72 | $10,996 | 1,261 | — | late |
| Jul 26, 2018 AForm 4 → | Sep 26, 6:39 pm EDT | Bruce BoothDirector | 2,092 | $8.72 | $18,242 | 2,092 | — | late |
| Jul 26, 2018 AForm 4 → | Sep 26, 6:37 pm EDT | Jorn AldagDirector | 1,547 | $8.72 | $13,490 | 1,547 | — | late |
| Apr 3, 2018 CForm 4 → | Apr 5, 12:28 pm EDT | FIL LtdOther | 1,787,241 | — | — | 0 | — | |
| Apr 3, 2018 CForm 4 → | Apr 5, 12:27 pm EDT | FMR LLCOther | 3,640,413 | — | — | 0 | — | |
| Apr 3, 2018 CForm 4 → | Apr 3, 5:11 pm EDT | Atlas Venture Fund IX, L.P. +210% Owner | 3,267,483 | — | — | 0 | — | |
| Apr 3, 2018 CForm 4 → | Apr 3, 5:07 pm EDT | Bruce BoothDirector | 3,267,483 | — | — | 0 | — | |
| Apr 3, 2018 CForm 4 → | Apr 3, 4:30 pm EDT | Liam RatcliffeDirector | 1,955,671 | — | — | 0 | — |