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Verastem, Inc.

VSTM
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001526119

In the last 90 days, Verastem, Inc. insiders filed 0 open-market purchases and 2 sales; 156 institutions reported holding it in 13F filings for Q2 2026, worth $363.5M in total; no superinvestor holds it.

Holders of 5% or more of VSTM

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

Holders of 5% or more of VSTM
HolderLatest formStakeChangeFirst filedLatest filingFiling
Deep Track Capital, LP13G9.99%7.72M sharesNewNov 21, 20251 filingNov 21, 2025SEC
RTW Investments, LP13G/A9.90%7.84M shares0.00 ppfrom 9.90%May 15, 20253 filingsFeb 17, 2026SEC
Soleus Capital Master Fund, L.P.13G/A7.30%3.35M shares–Feb 11, 20251 filingFeb 11, 2025SEC
Balyasny Asset Management LLC13G/A6.18%4.77M shares−3.11 ppfrom 9.29%Feb 14, 20255 filingsFeb 17, 2026SEC
BlackRock, Inc.13G6.00%3.68M shares+1.10 ppfrom 4.90%Apr 24, 20252 filingsOct 17, 2025SEC
Armistice Capital, LLC13G5.30%3.54M sharesNewFeb 17, 20261 filingFeb 17, 2026SEC
Foresite Capital Fund VI LP13G5.10%3.14M sharesNewOct 23, 20251 filingOct 23, 2025SEC
Polar Capital Holdings Plc13G5.09%3.40M sharesNewJan 5, 20261 filingJan 5, 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

43 Schedule 13D and 13G filings on Verastem, Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on VSTM
Filed (ET)FilerFormStakeChangeEvent dateFiling
Mar 27, 20261:52 PM ETVanguard Group Inc13G/A0.00%0 shares−6.23 ppfrom 6.23%Below 5%Mar 13, 2026SEC
Feb 17, 20269:43 PM ETArmistice Capital, LLCand 1 other13G5.30%3.54M sharesNewDec 31, 2025SEC
Feb 17, 20264:33 PM ETPoint72 Asset Management, L.P.and 2 others13G/A1.30%995.0K shares−4.80 ppfrom 6.10%Below 5%Dec 31, 2025SEC
Feb 17, 20268:54 AM ETRTW Investments, LPand 1 other13G/A9.90%7.84M shares0.00 ppfrom 9.90%Dec 31, 2025SEC
Feb 17, 20266:49 AM ETBalyasny Asset Management LLCand 4 others13G/A6.18%4.77M shares−3.11 ppfrom 9.29%Dec 31, 2025SEC
Feb 13, 20265:09 PM ETNantahala Capital Management, LLCand 2 others13G/A4.72%3.80M shares−2.41 ppfrom 7.13%Below 5%Dec 31, 2025SEC
Jan 5, 20269:44 AM ETPolar Capital Holdings Plcand 2 others13G5.09%3.40M sharesNewDec 31, 2025SEC
Nov 21, 20254:00 PM ETDeep Track Capital, LPand 2 others13G9.99%7.72M sharesNewNov 14, 2025SEC
Nov 14, 20254:39 PM ETNantahala Capital Management, LLCand 2 others13G/A7.13%4.63M shares−2.86 ppfrom 9.99%Sep 30, 2025SEC
Nov 14, 20251:01 PM ETLogos Global Management LPand 4 others13G/A4.80%3.17M shares−1.40 ppfrom 6.20%Below 5%Sep 30, 2025SEC
Nov 14, 20256:05 AM ETBalyasny Asset Management LLCand 4 others13G/A9.29%5.72M shares−0.70 ppfrom 9.99%Sep 30, 2025SEC
Nov 13, 20254:19 PM ETStonepine Capital Management, LLCand 3 others13G/A4.30%2.67M shares−0.70 ppfrom 5.00%Below 5%Sep 30, 2025SEC
Oct 23, 20257:09 PM ETForesite Capital Fund VI LPand 2 others13G5.10%3.14M sharesNewOct 16, 2025SEC
Oct 17, 20256:24 PM ETBlackRock, Inc.13G6.00%3.68M shares+1.10 ppfrom 4.90%Sep 30, 2025SEC
Aug 14, 20255:56 PM ETOrbiMed Advisors LLC13G/A2.40%1.33M shares−3.20 ppfrom 5.60%Below 5%Jun 30, 2025SEC
Aug 14, 20258:13 AM ETRTW Investments, LPand 1 other13G/A9.90%5.63M shares+1.60 ppfrom 8.30%Jun 30, 2025SEC
Aug 14, 20256:18 AM ETBalyasny Asset Management LLCand 4 others13G/A9.99%5.78M shares+0.69 ppfrom 9.30%Jun 30, 2025SEC
Aug 13, 20255:03 PM ETBiotechnology Value Fund L Pand 9 others13G/A3.90%2.50M shares−6.09 ppfrom 9.99%Below 5%Aug 11, 2025SEC
Aug 13, 20255:00 PM ETBiotechnology Value Fund L Pand 9 others13G/A9.99%5.72M shares0.00 ppfrom 9.99%Jun 30, 2025SEC
Aug 12, 20254:57 PM ETBarclays PLC13G/A–0 shares–Jun 30, 2025SEC
Aug 6, 20251:10 PM ETStonepine Capital Management, LLCand 3 others13G5.00%2.83M shares+0.20 ppfrom 4.80%Jul 22, 2025SEC
Jul 29, 20254:05 PM ETHirschman Orinand 1 other13G/A3.60%2.00M shares−2.50 ppfrom 6.10%Below 5%Jun 30, 2025SEC
Jul 29, 20252:50 PM ETVanguard Group Inc13G6.23%3.42M shares+1.52 ppfrom 4.71%Jun 30, 2025SEC
Jul 28, 20257:39 PM ETLogos Global Management LPand 4 others13G6.20%3.42M sharesNewJul 21, 2025SEC
Jul 28, 20254:27 PM ETPoint72 Asset Management, L.P.and 2 others13G6.10%3.34M sharesNewJul 25, 2025SEC
May 15, 20256:41 PM ETOrbiMed Advisors LLC13G/A5.60%2.86M shares–Mar 31, 2025SEC
May 15, 20254:39 PM ETNantahala Capital Management, LLCand 2 others13G/A9.99%5.46M shares0.00 ppfrom 9.99%Mar 31, 2025SEC
May 15, 20258:07 AM ETRTW Investments, LPand 1 other13G8.30%4.25M sharesNewMar 31, 2025SEC
May 15, 20256:05 AM ETBalyasny Asset Management LLCand 4 others13G/A9.30%4.79M shares+0.43 ppfrom 8.87%Mar 31, 2025SEC
May 2, 20255:00 PM ETSoleus Private Equity Fund III, L.P.and 8 others13G/A1.80%935.8K shares–Below 5%Mar 31, 2025SEC
Apr 30, 202511:13 AM ETVanguard Group Inc13G/A4.71%2.43M shares−0.48 ppfrom 5.19%Below 5%Mar 31, 2025SEC
Apr 24, 202511:26 AM ETBlackRock, Inc.13G/A4.90%2.52M shares–Below 5%Mar 31, 2025SEC
Mar 21, 20255:05 PM ETBarclays PLC13G/A8.87%3.95M shares0.00 ppfrom 8.87%Dec 31, 2024SEC
Feb 14, 20254:32 PM ETNantahala Capital Management, LLCand 2 others13G/A9.99%4.52M shares0.00 ppfrom 9.99%Dec 31, 2024SEC
Feb 14, 20254:26 PM ETBiotechnology Value Fund L Pand 9 others13G/A9.99%4.71M shares–Dec 31, 2024SEC
Feb 14, 20254:22 PM ETAlyeska Investment Group, L.P.and 2 others13G/A2.10%1.00M shares–Below 5%Dec 31, 2024SEC
Feb 14, 20252:26 PM ETBarclays PLC13G8.87%3.95M sharesNewDec 31, 2024SEC
Feb 14, 20257:27 AM ETBalyasny Asset Management LLCand 4 others13G8.87%3.95M sharesNewDec 31, 2024SEC
Feb 13, 202512:32 PM ETStonepine Capital Management, LLCand 3 others13G/A4.80%2.20M shares–Below 5%Dec 31, 2024SEC
Feb 11, 20254:00 PM ETSoleus Capital Master Fund, L.P.and 8 others13G/A7.30%3.35M shares–Dec 31, 2024SEC
Jan 31, 202510:08 AM ETVanguard Group Inc13G5.19%2.31M sharesNewDec 31, 2024SEC
Jan 21, 202511:57 AM ETHirschman Orinand 1 other13G6.10%2.72M sharesNewDec 31, 2024SEC
Nov 14, 20244:53 PM ETNantahala Capital Management, LLCand 2 others13G9.99%4.05M sharesNewSep 30, 2024SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Verastem, Inc. shares.

No Form 144 notices for Verastem, Inc. are on file.