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Cogent Biosciences, Inc.

COGT
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001622229

In the last 90 days, Cogent Biosciences, Inc. insiders filed 0 open-market purchases and 1 sale; 324 institutions reported holding it in 13F filings for Q2 2026, worth $7.50B in total; no superinvestor holds it.

Holders of 5% or more of COGT

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Cogent Biosciences, Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of COGT
HolderLatest formStakeChangeFirst filedLatest filingFiling
FMR LLC13G/A15.00%16.6M shares–Feb 9, 20244 filingsFeb 12, 2025SEC
Fairmount Funds Management LLC13D/A8.60%15.4M shares−1.30 ppfrom 9.90%Jun 21, 202210 filingsMar 31, 2026SEC
BlackRock, Inc.13G/A8.00%13.6M shares+1.50 ppfrom 6.50%Jan 21, 20263 filingsJul 27, 2026SEC
Vanguard Capital Management LLC13G5.08%8.69M sharesNewJul 31, 20261 filingJul 31, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

88 Schedule 13D and 13G filings on Cogent Biosciences, Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on COGT
Filed (ET)FilerFormStakeChangeEvent dateFiling
Aug 13, 20264:10 PM ETFlynn James Eand 3 others13G/A2.88%5.01M shares−2.41 ppfrom 5.29%Below 5%Jun 30, 2026SEC
Jul 31, 20269:55 AM ETVanguard Capital Management LLC13G5.08%8.69M sharesNewJun 30, 2026SEC
Jul 27, 20264:25 PM ETBlackRock, Inc.13G/A8.00%13.6M shares+1.50 ppfrom 6.50%Jun 30, 2026SEC
May 14, 20266:20 PM ETFlynn James Eand 3 others13G/A5.29%9.04M shares−1.20 ppfrom 6.49%Mar 31, 2026SEC
Mar 31, 20269:30 PM ETFairmount Funds Management LLCand 1 other13D/A8.60%15.4M shares−1.30 ppfrom 9.90%Mar 31, 2026SEC
Mar 26, 20265:12 PM ETVanguard Group Inc13G/A0.00%0 shares−7.50 ppfrom 7.50%Below 5%Mar 13, 2026SEC
Feb 17, 20264:42 PM ETCommodore Capital LPand 3 others13G/A1.80%2.80M shares−5.40 ppfrom 7.20%Below 5%Dec 31, 2025SEC
Feb 17, 202612:43 PM ETKynam Capital Management, LPand 2 others13G/A4.33%6.17M shares−1.21 ppfrom 5.54%Below 5%Dec 31, 2025SEC
Jan 30, 20261:26 PM ETVanguard Group Inc13G/A7.50%11.5M shares–Dec 31, 2025SEC
Jan 22, 20268:02 PM ETFairmount Funds Management LLCand 1 other13D/A9.90%16.3M shares0.00 ppfrom 9.90%Jan 22, 2026SEC
Jan 21, 20263:47 PM ETBlackRock, Inc.13G/A6.50%11.4M shares0.00 ppfrom 6.50%Dec 31, 2025SEC
Jan 21, 202612:30 PM ETBlackRock, Inc.13G/A6.50%11.4M shares–Dec 31, 2025SEC
Nov 17, 20254:36 PM ETFairmount Funds Management LLCand 1 other13D/A9.90%15.9M shares0.00 ppfrom 9.90%Nov 13, 2025SEC
Nov 14, 20254:57 PM ETCommodore Capital LPand 3 others13G/A7.20%10.2M shares+1.70 ppfrom 5.50%Sep 30, 2025SEC
Nov 14, 20254:34 PM ETParadigm Biocapital Advisors LPand 3 others13G/A2.30%3.16M shares−6.80 ppfrom 9.10%Below 5%Sep 30, 2025SEC
Nov 14, 20254:25 PM ETTCG Crossover GP I, LLCand 2 others13G/A4.80%6.80M shares–Below 5%Sep 30, 2025SEC
Nov 14, 20254:16 PM ETPoint72 Asset Management, L.P.and 2 others13G/A4.00%5.75M shares−4.70 ppfrom 8.70%Below 5%Sep 30, 2025SEC
Nov 14, 202512:36 PM ETKynam Capital Management, LPand 2 others13G/A5.54%7.89M shares–Sep 30, 2025SEC
Aug 14, 20256:04 PM ETVenrock Healthcare Capital Partners II, L.P.and 9 others13G/A4.20%4.76M shares−1.60 ppfrom 5.80%Below 5%Jun 30, 2025SEC
Aug 14, 20255:07 PM ETCommodore Capital LPand 3 others13G5.50%6.41M shares+0.90 ppfrom 4.60%Jul 7, 2025SEC
Aug 14, 20255:05 PM ETCommodore Capital LPand 1 other13G/A4.60%5.27M shares–Below 5%Jun 30, 2025SEC
Aug 14, 20254:31 PM ETParadigm Biocapital Advisors LPand 3 others13G/A9.10%10.4M shares+1.20 ppfrom 7.90%Jun 30, 2025SEC
Jul 14, 20254:31 PM ETFairmount Funds Management LLCand 1 other13D/A9.90%14.3M shares–Jul 10, 2025SEC
Jul 11, 20258:19 AM ETFlynn James Eand 3 others13G6.49%9.05M shares–Jul 7, 2025SEC
May 15, 20254:39 PM ETParadigm Biocapital Advisors LPand 3 others13G/A7.90%8.96M shares+2.90 ppfrom 5.00%Mar 31, 2025SEC
Apr 11, 20256:28 PM ETVenrock Healthcare Capital Partners II, L.P.and 9 others13G/A5.80%6.45M shares–Sep 30, 2024SEC
Feb 14, 20254:10 PM ETPoint72 Asset Management, L.P.and 2 others13G/A8.70%9.99M shares–Dec 31, 2024SEC
Feb 12, 20254:35 PM ETParadigm Biocapital Advisors LPand 3 others13G5.00%5.56M sharesNewFeb 5, 2025SEC
Feb 12, 20259:28 AM ETFMR LLCand 1 other13G/A15.00%16.6M shares–Dec 31, 2024SEC
Nov 14, 2024Commodore Capital LP13G/AOld format–––SEC
Nov 14, 2024Venrock Healthcare Capital Partners II, L.P.13G/AOld format–––SEC
Nov 14, 2024Kynam Capital Management, LP13G/AOld format–––SEC
Nov 14, 2024Suvretta Capital Management, LLC13G/AOld format–––SEC
Nov 14, 2024Point72 Asset Management, L.P.13G/AOld format–––SEC
Nov 7, 2024FMR LLC13G/AOld format–––SEC
Nov 7, 2024FMR LLC13G/AOld format–––SEC
Jun 13, 2024Fairmount Funds Management LLC13D/AOld format–––SEC
Apr 1, 2024Fairmount Funds Management LLC13D/AOld format–––SEC
Mar 27, 2024Fairmount Funds Management LLC13D/AOld format–––SEC
Feb 16, 2024Fairmount Funds Management LLC13D/AOld format–––SEC
Feb 14, 2024Commodore Capital LP13G/AOld format–––SEC
Feb 14, 2024Venrock Healthcare Capital Partners II, L.P.13G/AOld format–––SEC
Feb 14, 2024Ra Capital Management, L.P.13G/AOld format–––SEC
Feb 14, 2024Kynam Capital Management, LP13GOld format–New–SEC
Feb 14, 2024Point72 Asset Management, L.P.13G/AOld format–––SEC
Feb 13, 2024Vanguard Group Inc13GOld format–New–SEC
Feb 9, 2024TCG Crossover GP I, LLC13G/AOld format–––SEC
Feb 9, 2024FMR LLC13GOld format–New–SEC
Feb 5, 2024Suvretta Capital Management, LLC13GOld format–New–SEC
Jan 26, 202411:49 AM ETBlackRock Inc.13G/AOld format–––SEC

Form 144: proposed insider sales

7 notices from officers, directors and other affiliates planning to sell Cogent Biosciences, Inc. shares, newest first.

Form 144 notices for COGT
Filed (ET)SellerShares to sellMarket valuePlanned saleBrokerFiling
Aug 27, 20264:17 PM ETArlene MorrisDirector45.5K$1.67MAug 27, 202610b5-1Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Mar 31, 20269:30 PM ETFairmount Healthcare Fund II L.P.Director7.00M$242.6MMar 31, 2026Goldman Sachs & Co. LLCSEC
Jan 22, 20268:05 PM ETFairmount Healthcare Fund II L.P.Director3.50M$127.4MJan 22, 2026Jefferies LLCSEC
Dec 29, 20259:27 AM ETJessica SachsOfficer82.6K$3.20MDec 26, 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Dec 29, 20259:08 AM ETJohn RobinsonOfficer90.0K$3.49MDec 26, 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Dec 29, 20259:06 AM ETJohn GreenOfficer77.0K$2.98MDec 26, 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Dec 29, 20259:05 AM ETEvan D KearnsOfficer65.0K$2.52MDec 26, 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC