IMSR
Terrestril Ene (IMSR)
NASDAQ
$2.59+$0.08 (+3.40%)
Price as of Nov 13, 2026 1:00 PM EST
  • $206.9M
    Market Cap
  • -79.17%
    1-Year Change
  • Utilities - Regulated Electric
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD CAPITAL MANAGEMENT LLC
4.12%
3.4M
+2.1M (+61.82%)
Jun 30, 2026
UBS GROUP AG
2.29%
1.9M
+122,656 (+6.47%)
Sep 30, 2026
VANGUARD GROUP INC
2.23%
1.8M
+1.8M (+100.00%)
Dec 31, 2025
HRT FINANCIAL LP
1.36%
1.1M
+1.1M (+100.00%)
Jun 30, 2026
BLACKROCK, INC.
1.30%
1.1M
-46,361 (-4.31%)
Jun 30, 2026
JPMORGAN CHASE & CO
1.17%
966,797
-106,276 (-10.99%)
Jun 30, 2026
LMR PARTNERS LLP
0.83%
690,702
0 (0.00%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions70.4M (76.03%)
  • Mutual Funds18.6M (20.05%)
  • Insiders3.6M (3.92%)
  • Other0 (0.00%)

Insider Transactions

  • 3.92% (3.6M)
    Current InsiderOwnership (%, shares)
  • 3
    Number of InsiderBuying (last 12 months)
  • $6.9M
    Amount of InsiderBuying (last 12 months)
  • 0
    Number of InsiderSelling (last 12 months)
  • $0.00
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Irish Simon
Chief Executive Officer
Exempt
Oct 21, 2026
$0.00
511,580
$0.00
511,580
Irish Simon
Chief Executive Officer
Exempt
Oct 21, 2026
$0.00
511,580
$0.00
2.8M
Pardee Charles G
Buy
Oct 14, 2026
$22,125.00
7,500
$2.95
14,258
Irish Simon
Chief Executive Officer
Buy
Oct 13, 2026
$50,818.30
16,900
$3.01
2.3M
BUCKMAN FREDERICK W
Buy
Oct 09, 2026
$39,336.00
12,000
$3.28
18,669
Cowan Pamela Beth
EVP, Engineering
Award
Jul 29, 2026
$0.00
299,401
$0.00
299,401
McCarthy Kathryn Ann
Award
Jul 23, 2026
$0.00
2,049
$0.00
2,049
Hill David John
Award
Dec 18, 2025
$0.00
3,352
$0.00
3,352
Matthews Shawn
Award
Dec 18, 2025
$0.00
4,190
$0.00
4,190
Pardee Charles G
Award
Dec 18, 2025
$0.00
5,027
$0.00
5,027
BUCKMAN FREDERICK W
Award
Dec 18, 2025
$0.00
6,703
$0.00
6,703
Hill David John
Award
Dec 18, 2025
$0.00
588
$0.00
3,940
Matthews Shawn
Award
Dec 18, 2025
$0.00
735
$0.00
4,925
Pardee Charles G
Award
Dec 18, 2025
$0.00
882
$0.00
5,909
BUCKMAN FREDERICK W
Award
Dec 18, 2025
$0.00
1,176
$0.00
7,879