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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.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Verastem, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
2 filings
2 insiders, $7.99K in total
Insiders trading
2
Net value
−$7.99K
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Verastem, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Verastem, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Calkins DanielChief Financial Officer118,014Sep 23, 20266
Paterson DanPresident and CEO589,940Aug 5, 202613
Bailey Michael PDirector108,000May 27, 20261
Rowinsky Eric KDirector52,666May 26, 20261
Johnson JohnDirector52,666May 26, 20261
Stuglik Brian MDirector137,147May 26, 20262
Kapur AnilDirector52,666May 26, 20261
Robertson MichelleDirector52,666May 26, 20261
Bunn Paul A.Director44,333May 26, 20263
Tollefson Karin AnnaDirector52,666May 26, 20261
Kauffman MichaelPresident of Development8,666Jan 8, 20262
Gagnon Robert E.Director41,678Dec 18, 20251
Ros MatthewChief Operating Officer50,000Apr 3, 20250
Solomon Lesley KimDirector–Dec 20, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Sep 23, 2026 (view filing)8:10 PM ETSep 212 daysCalkins DanielChief Financial OfficerSSale−55$7.70−$423.50.0%118.0K after10b5-1
Aug 5, 2026 (view filing)4:37 PM ETAug 32 daysPaterson DanPresident and CEOSSale−1.30K$5.81−$7.56K−0.2%589.9K after10b5-1
Jun 24, 2026 (view filing)Jun 222 daysPaterson DanPresident and CEOSSale−20.9K$4.18−$87.2K−3.4%591.2K after10b5-1
Jun 24, 2026 (view filing)Jun 222 daysCalkins DanielChief Financial OfficerSSale−4.09K$4.18−$17.1K−3.4%117.2K after2 lots10b5-1
May 6, 2026 (view filing)May 42 daysPaterson DanPresident and CEOSSale−806$5.82−$4.69K−0.1%612.1K after10b5-1
Feb 5, 2026 (view filing)Feb 41 dayPaterson DanPresident and CEOSSale−970$6.69−$6.49K−0.2%612.9K after10b5-1
Jan 14, 2026 (view filing)Jan 122 daysPaterson DanPresident and CEOSSale−10.3K$7.16−$73.9K−2.5%400.1K after10b5-1
Jan 14, 2026 (view filing)Jan 122 daysCalkins DanielChief Financial OfficerSSale−5.04K$7.16−$36.1K−4.6%104.7K after10b5-1
Dec 29, 2025 (view filing)Dec 245 daysCalkins DanielChief Financial OfficerSSale−80$7.86−$628.8−0.1%109.8K after10b5-1
Dec 18, 2025 (view filing)Dec 162 daysStuglik Brian MDirectorSSale−592$9.14−$5.41K−0.6%101.1K after10b5-1
Dec 18, 2025 (view filing)Dec 162 daysPaterson DanPresident and CEOSSale−393$9.14−$3.59K−0.1%410.4K after10b5-1
Dec 18, 2025 (view filing)Dec 162 daysGagnon Robert E.DirectorSSale−283$9.14−$2.59K−0.7%41.7K after10b5-1
Dec 12, 2025 (view filing)Dec 10-112 daysPaterson DanPresident and CEOSSale−4.00K$10.04−$40.1K−1.0%410.8K after2 lots10b5-1
Dec 9, 2025 (view filing)Dec 5-94 daysPaterson DanPresident and CEOSSale−6.00K$10.45−$62.7K−1.4%414.8K after3 lots10b5-1
Dec 4, 2025 (view filing)Dec 2-42 daysPaterson DanPresident and CEOSSale−6.00K$10.11−$60.6K−1.4%420.8K after3 lots10b5-1
Dec 1, 2025 (view filing)Nov 26-Dec 15 daysPaterson DanPresident and CEOSSale−6.00K$10.50−$63.0K−1.4%426.8K after3 lots10b5-1
Nov 25, 2025 (view filing)Nov 214 daysBunn Paul A.DirectorSSale−6.25K$10.00−$62.5K−75.0%2.08K after10b5-1
Nov 25, 2025 (view filing)Nov 214 daysKauffman MichaelDirectorSSale−8.55K$10.00−$85.5K−49.7%8.67K after10b5-1
Nov 25, 2025 (view filing)Nov 21-254 daysPaterson DanPresident and CEOSSale−6.00K$10.00−$60.0K−1.4%432.8K after3 lots10b5-1
Nov 6, 2025 (view filing)Nov 33 daysLatePaterson DanPresident and CEOSSale−3.30K$9.74−$32.1K−0.7%438.8K after2 lots10b5-1
Oct 14, 2025 (view filing)Oct 95 daysBunn Paul A.DirectorSSale−8.33K$9.06−$75.5K−50.0%8.33K after10b5-1
Sep 24, 2025 (view filing)Sep 22-242 daysCalkins DanielChief Financial OfficerSSale−82$9.13−$748.31−0.1%109.8K after2 lots10b5-1
Sep 18, 2025 (view filing)Sep 162 daysStuglik Brian MDirectorSSale−587$9.99−$5.86K−0.6%101.7K after10b5-1
Sep 18, 2025 (view filing)Sep 162 daysGagnon Robert E.DirectorSSale−281$9.99−$2.81K−0.7%42.0K after10b5-1
Sep 18, 2025 (view filing)Sep 162 daysPaterson DanPresident and CEOSSale−390$9.99−$3.90K−0.1%442.1K after10b5-1
Aug 6, 2025 (view filing)Aug 6Same dayPaterson DanPresident and CEOSSale−1.33K$5.81−$7.74K−0.3%442.5K after10b5-1
Jun 24, 2025 (view filing)Jun 204 daysPaterson DanPresident and CEOSSale−17.8K$5.13−$91.4K−3.9%443.8K after10b5-1
Jun 24, 2025 (view filing)Jun 20-234 daysCalkins DanielChief Financial OfficerSSale−4.13K$5.13−$21.2K−3.6%109.9K after2 lots10b5-1
Jun 20, 2025 (view filing)Jun 164 daysLatePaterson DanPresident and CEOSSale−335$5.65−$1.89K−0.1%461.6K after
Jun 20, 2025 (view filing)Jun 164 daysLateGagnon Robert E.DirectorSSale−284$5.65−$1.60K−0.7%42.2K after
Jun 20, 2025 (view filing)Jun 164 daysLateStuglik Brian MDirectorSSale−594$5.65−$3.36K−0.6%102.3K after
May 20, 2025 (view filing)May 20Same dayCalkins DanielChief Financial OfficerSSale−11.1K$8.13−$90.6K−8.9%114.1K after10b5-1
May 20, 2025 (view filing)May 20Same dayPaterson DanPresident and CEOSSale−58.7K$8.13−$477.0K−11.3%462.0K after10b5-1
May 7, 2025 (view filing)May 52 daysPaterson DanPresident and CEOSSale−820$7.30−$5.99K−0.2%345.7K after
Mar 24, 2025 (view filing)Mar 20-244 daysCalkins DanielChief Financial OfficerSSale−91$6.93−$630.89−0.1%86.3K after2 lots
Mar 19, 2025 (view filing)Mar 172 daysPaterson DanPresident and CEOSSale−244$6.95−$1.70K−0.1%346.5K after
Mar 19, 2025 (view filing)Mar 172 daysGagnon Robert E.DirectorSSale−284$6.95−$1.97K−0.8%34.2K after
Mar 19, 2025 (view filing)Mar 172 daysStuglik Brian MDirectorSSale−593$6.95−$4.12K−0.6%94.6K after
Feb 5, 2025 (view filing)Feb 41 dayPaterson DanPresident and CEOSSale−858$5.70−$4.89K−0.2%346.7K after
Jan 14, 2025 (view filing)Jan 131 dayPaterson DanPresident and CEOSSale−8.57K$5.24−$44.9K−2.4%347.6K after
Jan 8, 2025 (view filing)Jan 62 daysCalkins DanielChief Financial OfficerSSale−6$6.94−$41.640.0%47.6K after
Dec 26, 2024 (view filing)Dec 20-246 daysCalkins DanielChief Financial OfficerSSale−93$4.21−$391.58−0.2%47.4K after2 lots
Dec 20, 2024 (view filing)Dec 16-194 daysLateGagnon Robert E.DirectorSSale−415$4.49−$1.86K−1.2%34.5K after2 lots
Dec 20, 2024 (view filing)Dec 16-194 daysLateStuglik Brian MDirectorSSale−929$4.48−$4.16K−1.0%95.2K after2 lots
Dec 20, 2024 (view filing)Dec 16-194 daysLatePaterson DanPresident and CEOSSale−427$4.47−$1.91K−0.2%231.1K after2 lots
Nov 7, 2024 (view filing)Nov 52 daysPaterson DanPresident and CEOSSale−812$3.84−$3.12K−0.3%231.6K after
Oct 9, 2024 (view filing)Oct 72 daysCalkins DanielChief Financial OfficerSSale−6$2.86−$17.160.0%47.5K after
Sep 24, 2024 (view filing)Sep 20-244 daysCalkins DanielChief Financial OfficerSSale−93$2.76−$257.04−0.2%47.5K after2 lots
Sep 20, 2024 (view filing)Sep 191 dayGagnon Robert E.DirectorSSale−131$2.79−$365.49−0.4%34.9K after
Sep 20, 2024 (view filing)Sep 191 dayPaterson DanPresident and CEOSSale−184$2.79−$513.36−0.1%232.4K after