VSTM
VERASTEM (VSTM)
NASDAQ
$3.77-$0.04 (-1.05%)
Price as of Jun 03, 2026 7:14 PM EDT
  • $380.5M
    Market Cap
  • -35.42%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
RTW INVESTMENTS, LP
9.49%
6.6M
0 (0.00%)
Mar 31, 2026
BLACKROCK, INC.
8.94%
6.2M
+1.4M (+23.28%)
Mar 31, 2026
DEEP TRACK CAPITAL, LP
8.28%
5.7M
0 (0.00%)
Mar 31, 2026
ARMISTICE CAPITAL, LLC
6.62%
4.6M
+1.1M (+23.00%)
Mar 31, 2026
VANGUARD GROUP INC
5.99%
4.2M
+673,695 (+16.22%)
Dec 31, 2025
POLAR CAPITAL HOLDINGS PLC
5.66%
3.9M
+2.9M (+73.03%)
Dec 31, 2025
NANTAHALA CAPITAL MANAGEMENT, LLC
5.17%
3.6M
+3.1M (+87.11%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions1.1B (74.48%)
  • Mutual Funds321.1M (22.28%)
  • Insiders46.7M (3.24%)
  • Other0 (0.00%)

Insider Transactions

  • 3.24% (46.7M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 6
    Number of InsiderSelling (last 12 months)
  • $48.2M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Tollefson Karin Anna
Award
May 21, 2026
$0.00
36,000
$0.00
52,666
Bunn Paul A.
Award
May 21, 2026
$0.00
36,000
$0.00
44,333
Stuglik Brian M
Award
May 21, 2026
$0.00
36,000
$0.00
137,147
BAILEY MICHAEL P
Award
May 21, 2026
$0.00
108,000
$0.00
108,000
Kapur Anil
Award
May 21, 2026
$0.00
36,000
$0.00
52,666
Rowinsky Eric K
Award
May 21, 2026
$0.00
36,000
$0.00
52,666
Paterson Dan
President and CEO
Sell
May 04, 2026
$4,690.92
806
$5.82
612,113
Calkins Daniel
Chief Financial Officer
Award
Mar 20, 2026
$327.18
57
$5.74
121,327
Paterson Dan
President and CEO
Sell
Feb 04, 2026
$6,489.30
970
$6.69
612,919
Calkins Daniel
Chief Financial Officer
Award
Jan 21, 2026
$0.00
16,665
$0.00
121,384
Paterson Dan
President and CEO
Award
Jan 21, 2026
$0.00
213,785
$0.00
613,889
Paterson Dan
President and CEO
Sell
Jan 12, 2026
$73,898.36
10,321
$7.16
400,104
Calkins Daniel
Chief Financial Officer
Sell
Jan 12, 2026
$36,079.24
5,039
$7.16
104,719
Calkins Daniel
Chief Financial Officer
Sell
Dec 24, 2025
$628.80
80
$7.86
109,758
Paterson Dan
President and CEO
Sell
Dec 16, 2025
$3,592.02
393
$9.14
410,425
Gagnon Robert E.
Sell
Dec 16, 2025
$2,586.62
283
$9.14
41,678
Stuglik Brian M
Sell
Dec 16, 2025
$5,410.88
592
$9.14
101,147
Paterson Dan
President and CEO
Sell
Nov 25, 2025
$20,000.00
2,000
$10.00
432,818
Paterson Dan
President and CEO
Sell
Nov 24, 2025
$20,000.00
2,000
$10.00
434,818
Kauffman Michael
Sell
Nov 21, 2025
$85,500.00
8,550
$10.00
8,666
Paterson Dan
President and CEO
Sell
Nov 21, 2025
$20,000.00
2,000
$10.00
436,818
Paterson Dan
President and CEO
Sell
Nov 03, 2025
$12,145.65
1,299
$9.35
440,818
Paterson Dan
President and CEO
Sell
Nov 03, 2025
$20,000.00
2,000
$10.00
438,818
Bunn Paul A.
Sell
Oct 09, 2025
$75,496.98
8,333
$9.06
8,333
Calkins Daniel
Chief Financial Officer
Sell
Sep 24, 2025
$230.75
25
$9.23
109,838
Calkins Daniel
Chief Financial Officer
Sell
Sep 22, 2025
$517.56
57
$9.08
109,863
Stuglik Brian M
Sell
Sep 16, 2025
$5,864.13
587
$9.99
101,739
Calkins Daniel
Chief Financial Officer
Sell
Jun 23, 2025
$117.75
25
$4.71
109,920
Paterson Dan
President and CEO
Sell
Jun 20, 2025
$91,355.04
17,808
$5.13
443,839
Calkins Daniel
Chief Financial Officer
Sell
Jun 20, 2025
$21,084.30
4,110
$5.13
109,945