COGENT BIOSCIENCES INC COGT
COM · Common Stock · CUSIP 19240Q201 · ISIN US19240Q2012
Company in Waltham, United States
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersWaltham, MA
- Founded2014
- Websitecogentbio.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($848.1k this quarter). Holder counts are more reliable. Shares outstanding: 162.3m as of 2026-02-13, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $35.52. Options: 7 managers hold calls ($23.8m notional), 5 hold puts ($18.6m).
Trends to Q4 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 134 |
| Q4 2022 | 136 |
| Q1 2023 | 137 |
| Q2 2023 | 137 |
| Q3 2023 | 136 |
| Q4 2023 | 145 |
| Q1 2024 | 147 |
| Q2 2024 | 150 |
| Q3 2024 | 162 |
| Q4 2024 | 178 |
| Q1 2025 | 187 |
| Q2 2025 | 182 |
| Q3 2025 | 195 |
| Q4 2025 | 267 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2024 | 94 | 67 |
| Q2 2024 | 81 | 68 |
| Q3 2024 | 81 | 67 |
| Q4 2024 | 89 | 69 |
| Q1 2025 | 97 | 68 |
| Q2 2025 | 106 | 72 |
| Q3 2025 | 126 | 69 |
| Q4 2025 | 175 | 85 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $354.8k | $1.4m | 3.99 |
| Q2 2025 | $20.5m | $6.5m | 0.32 |
| Q3 2025 | $20.7m | $7.8m | 0.38 |
| Q4 2025 | $23.8m | $18.6m | 0.78 |
Biggest buyers
| RTW INVESTMENTS, LP | Added | +4.1m |
| VANGUARD GROUP INC | Added | +3.8m |
| BlackRock, Inc. | Added | +2.6m |
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +2.5m |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +2.3m |
| LORD, ABBETT & CO. LLC | New | +1.9m |
| JANUS HENDERSON GROUP PLC | Added | +1.4m |
| Duquesne Family Office LLC | Added | +1.2m |
| FRED ALGER MANAGEMENT, LLC | New | +1.1m |
| Holocene Advisors, LP | Added | +1.1m |
Biggest sellers
| Commodore Capital LP | Reduced | -5.1m |
| Paradigm Biocapital Advisors LP | Sold out | -3.2m |
| Venrock Adviser, LLC | Reduced | -2.0m |
| Kynam Capital Management, LP | Reduced | -1.7m |
| UBS Group AG | Reduced | -1.6m |
| Nantahala Capital Management, LLC | Reduced | -1.3m |
| Balyasny Asset Management L.P. | Reduced | -1.2m |
| BANK OF AMERICA CORP /DE/ | Reduced | -1.0m |
| BOONE CAPITAL MANAGEMENT LLC | Sold out | -945.0k |
| TCG Crossover Management, LLC | Reduced | -930.0k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $7.5m211.6k shares |
| JANE STREET GROUP, LLC | Added | $4.8m135.3k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $3.6m100.0k shares |
| SIMPLEX TRADING, LLC | Added | $2.6m73.3k shares |
| CITADEL ADVISORS LLC | Added | $2.6m73.1k shares |
| GROUP ONE TRADING LLC | Added | $2.3m65.8k shares |
| Caption Management, LLC | Reduced | $373.0k10.5k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $11.3m316.8k shares |
| CITADEL ADVISORS LLC | Added | $2.8m79.3k shares |
| SIMPLEX TRADING, LLC | Added | $2.4m68.6k shares |
| JANE STREET GROUP, LLC | New | $1.3m35.8k shares |
| GROUP ONE TRADING LLC | Reduced | $774.3k21.8k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| FMR LLC 13G · institution filed 2025-02-12 | 15.0% |
| Fairmount Funds Management LLC 13D · may seek influence -1.3 pts · filed 2026-03-31 | 8.6% |
| BlackRock, Inc. 13G · institution +1.5 pts · filed 2026-07-27 | 8.0% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-07-31 | 5.1% |
Fell to 5% or below in the last year: Flynn James E (2.9%, 2026-08-13), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC), Commodore Capital LP (1.8%, 2026-02-17), Kynam Capital Management, LP (4.3%, 2026-02-17), TCG Crossover GP I, LLC (4.8%, 2025-11-14), Paradigm Biocapital Advisors LP (2.3%, 2025-11-14), Point72 Asset Management, L.P. (4.0%, 2025-11-14)
Insider purchases and sales in Q4 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 1 | $332.5k | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 1 | $25.0m | 0 | — | — |
| Q4 2025 | 0 | — | 4 | $12.2m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-12-26 | Robinson John Edward Chief Scientific Officer | Sold | $3.5m90.0k shares |
| 2025-12-26 | Sachs Jessica Chief Medical Officer | Sold | $3.2m82.6k shares |
| 2025-12-26 | Green John L. Chief Financial Officer | Sold | $3.0m77.0k shares |
| 2025-12-26 | Kearns Evan Chief Legal Officer | Sold | $2.5m65.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.04% of their portfolio | 23.1m $820.0m | Added +678.7k |
| BlackRock, Inc. 0.01% of their portfolio | 13.0m $460.9m | Added +2.6m |
| VANGUARD GROUP INC 0.01% of their portfolio | 11.5m $409.0m | Added +3.8m |
| DEERFIELD MANAGEMENT COMPANY, L.P. 4.12% of their portfolio | 9.0m $321.2m | Reduced -9.2k |
| Fairmount Funds Management LLC 24.34% of their portfolio | 9.0m $319.8m | Unchanged |
| RTW INVESTMENTS, LP 2.70% of their portfolio | 7.6m $269.7m | Added +4.1m |
| Kynam Capital Management, LP 14.26% of their portfolio | 6.2m $219.0m | Reduced -1.7m |
| TCG Crossover Management, LLC 6.90% of their portfolio | 5.9m $208.4m | Reduced -930.0k |
| STATE STREET CORP 0.01% of their portfolio | 4.9m $175.5m | Added +164.9k |
| JANUS HENDERSON GROUP PLC 0.07% of their portfolio | 4.5m $161.1m | Added +1.4m |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 3.5m $124.9m | Added +240.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.02% of their portfolio | 2.7m $96.3m | Added +2.3m |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 2.6m $91.1m | Added +2.5m |
| Vivo Capital, LLC 5.51% of their portfolio | 2.4m $85.2m | Reduced -390.1k |
| Octagon Capital Advisors LP 10.45% of their portfolio | 2.4m $83.5m | Reduced -524.1k |
| D. E. Shaw & Co., Inc. 0.06% of their portfolio | 2.2m $79.8m | Added +716.9k |
| Duquesne Family Office LLC 1.86% of their portfolio | 2.2m $78.7m | Added +1.2m |
| Commodore Capital LP 5.19% of their portfolio | 2.2m $78.0m | Reduced -5.1m |
| Venrock Adviser, LLC 3.51% of their portfolio | 2.0m $71.0m | Reduced -2.0m |
| Sofinnova Investments, Inc. 3.02% of their portfolio | 2.0m $70.1m | Reduced -154.3k |
| LORD, ABBETT & CO. LLC 0.20% of their portfolio | 1.9m $66.4m | New |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.7m $60.6m | Added +45.5k |
| MARSHALL WACE, LLP 0.06% of their portfolio | 1.7m $59.0m | Added +1.0m |
| Siren, L.L.C. 1.73% of their portfolio | 1.6m $57.9m | Reduced -95.0k |
| EMERALD ADVISERS, LLC 1.73% of their portfolio | 1.6m $56.2m | Added +3.9k |
| Balyasny Asset Management L.P. 0.10% of their portfolio | 1.4m $51.2m | Reduced -1.2m |
| CITADEL ADVISORS LLC 0.03% of their portfolio | 1.4m $51.1m | Reduced -228.8k |
| Redmile Group, LLC 3.76% of their portfolio | 1.4m $51.1m | Reduced -771.2k |
| Candriam S.C.A. 0.23% of their portfolio | 1.3m $46.1m | Added +342.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 1.3m $45.5m | Added +90.1k |
| SILVERARC CAPITAL MANAGEMENT, LLC 6.40% of their portfolio | 1.2m $44.2m | Added +430.2k |
| Saturn V Capital Management LP 7.93% of their portfolio | 1.2m $43.2m | Reduced -808.0k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 1.2m $42.9m | Added +793.3k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 1.2m $42.6m | Added +17.6k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 1.2m $42.3m | Reduced -1.0m |
| Holocene Advisors, LP 0.09% of their portfolio | 1.2m $41.8m | Added +1.1m |
| Elmind Capital, LP 12.27% of their portfolio | 1.2m $41.6m | First filing |
| FRED ALGER MANAGEMENT, LLC 0.15% of their portfolio | 1.1m $39.1m | New |
| EMERALD MUTUAL FUND ADVISERS TRUST 1.80% of their portfolio | 1.0m $36.9m | Added +15.6k |
| Nuveen, LLC 0.01% of their portfolio | 932.6k $33.1m | Reduced -7.0k |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 892.9k $31.7m | New |
| Rock Springs Capital Management LP 1.55% of their portfolio | 849.0k $30.2m | Reduced -159.3k |
| Point72 Asset Management, L.P. 0.05% of their portfolio | 827.5k $29.4m | Reduced -410.3k |
| First Turn Management, LLC 3.35% of their portfolio | 824.3k $29.3m | New |
| Woodline Partners LP 0.11% of their portfolio | 818.8k $29.1m | Added +305.4k |
| Squadron Capital Management LLC 12.36% of their portfolio | 780.0k $27.7m | First filing |
| MORGAN STANLEY 0.00% of their portfolio | 726.8k $25.8m | Reduced -561.4k |
| RENAISSANCE TECHNOLOGIES LLC 0.04% of their portfolio | 689.1k $24.5m | Added +456.1k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.08% of their portfolio | 669.0k $23.8m | New |
| Invesco Ltd. 0.00% of their portfolio | 585.8k $20.8m | Added +213.5k |
| Defilade Capital Management, L.P. 2.74% of their portfolio | 568.6k $20.2m | First filing |
| Atika Capital Management LLC 2.50% of their portfolio | 506.0k $18.0m | New |
| Alyeska Investment Group, L.P. 0.05% of their portfolio | 493.9k $17.5m | Added +393.9k |
| NWI MANAGEMENT LP 0.52% of their portfolio | 483.3k $17.2m | New |
| Deep Track Capital, LP 0.37% of their portfolio | 453.1k $16.1m | New |
| J. Goldman & Co LP 0.61% of their portfolio | 439.3k $15.6m | New |
| FEDERATED HERMES, INC. 0.03% of their portfolio | 426.8k $15.2m | Added +333.6k |
| Ensign Peak Advisors, Inc 0.03% of their portfolio | 421.5k $15.0m | Added +395.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 400.9k $14.2m | Added +251.3k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 385.5k $13.7m | Added +264.5k |
| SPHERA FUNDS MANAGEMENT LTD. 2.81% of their portfolio | 378.5k $13.4m | Added +280.0k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 376.3k $13.4m | Added +13.3k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 375.9k $13.4m | Added +86.5k |
| Assenagon Asset Management S.A. 0.02% of their portfolio | 375.6k $13.3m | Reduced -201.4k |
| ORBIMED ADVISORS LLC 0.27% of their portfolio | 371.0k $13.2m | New |
| SUPERSTRING CAPITAL MANAGEMENT LP 6.96% of their portfolio | 366.2k $13.0m | Added +4.8k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.27% of their portfolio | 352.4k $12.5m | Reduced -231.5k |
| Affinity Asset Advisors, LLC 0.89% of their portfolio | 350.0k $12.4m | New |
| Hennion & Walsh Asset Management, Inc. 0.41% of their portfolio | 338.1k $12.0m | Added +37.9k |
| HighVista Strategies LLC 3.08% of their portfolio | 336.7k $12.0m | Reduced -125.7k |
| Burkehill Global Management, LP 0.76% of their portfolio | 325.0k $11.5m | Added +125.0k |
| BARCLAYS PLC 0.00% of their portfolio | 321.6k $11.4m | Reduced -38.2k |
| Patient Square Capital LP 2.41% of their portfolio | 317.4k $11.3m | New |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.02% of their portfolio | 305.9k $10.9m | First filing |
| Exome Asset Management LLC 5.36% of their portfolio | 305.6k $10.9m | Reduced -138.0k |
| Man Group plc 0.02% of their portfolio | 292.1k $10.4m | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 283.5k $10.1m | Added +204.9k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 276.7k $9.8m | Added +163.1k |
| UBS Group AG 0.00% of their portfolio | 264.0k $9.4m | Reduced -1.6m |
| SummitTX Capital, L.P. 0.28% of their portfolio | 257.2k $9.1m | Reduced -38.6k |
| Nantahala Capital Management, LLC 0.53% of their portfolio | 250.0k $8.9m | Reduced -1.3m |
| Evergreen Quality Fund GP, Ltd. 0.18% of their portfolio | 250.0k $8.9m | New |
| F/m Investments LLC 0.32% of their portfolio | 235.8k $8.4m | Added +15.6k |
| Susquehanna Portfolio Strategies, LLC 0.13% of their portfolio | 229.8k $8.2m | Unchanged |
| ALGERT GLOBAL LLC 0.13% of their portfolio | 227.9k $8.1m | Reduced -39.3k |
| Cormorant Asset Management, LP 0.45% of their portfolio | 225.0k $8.0m | New |
| Boxer Capital Management, LLC 1.75% of their portfolio | 225.0k $8.0m | New |
| Seven Fleet Capital Management LP 5.15% of their portfolio | 214.1k $7.6m | First filing |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 199.0k $7.1m | Reduced -499.0k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 188.3k $6.7m | New |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 180.2k $6.4m | Added +3.5k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 179.4k $6.4m | Added +168.1k |
| Connor, Clark & Lunn Investment Management Ltd. 0.02% of their portfolio | 175.9k $6.2m | New |
| Swiss National Bank 0.00% of their portfolio | 165.4k $5.9m | Added +3.2k |
| Skandinaviska Enskilda Banken AB (publ) 0.02% of their portfolio | 164.4k $5.8m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 164.1k $5.8m | Added +21.2k |
| TUDOR INVESTMENT CORP ET AL 0.03% of their portfolio | 159.9k $5.7m | New |
| Squarepoint Ops LLC 0.01% of their portfolio | 156.0k $5.5m | New |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 155.5k $5.5m | Added +30.9k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 153.6k $5.5m | Added +72.6k |