Latest Period
Q1 2026
Security Snapshot
Terrestrial Energy Inc. /DE/ - *W EXP 10/28/203 (IMSRW) Institutional Ownership
CUSIP: 881454110
13F Institutional Holders and Ownership History from Q3 2025 to Q1 2026
Institutions Reporting
25
Shares (Excl. Options)
10,588,156
Price
$2.59
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- Security type / class
- Equity / *W EXP 10/28/203
- Symbol
- IMSRW on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 10,588,156
- Total 13F value
- $27,306,006
- Portfolio coverage rank
- 0%
- Share change
- -357,023
- Value change
- -$673,722
- Number of holders
- 25
- SEC-reported price per share
- $3.75
Latest holder snapshot
5 signals
Issuer context
1 identity field
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- IMSRW - Terrestrial Energy Inc. /DE/ - *W EXP 10/28/203 is tracked under CUSIP 881454110.
- 25 institutions reported positions in Q1 2026.
- Schedule 13D/13G significant owner rows are not currently available.
Change
- Holder count moved from 27 to 25 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $23,108,164 to $27,306,006.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 25 institutions filings for Q1 2026.
Security key
881454110
Latest holder period
Q1 2026
13F holders
25
13D/G owners
0
CIK / CUSIP context first
Open Q1 2026 holders
IMSRW full holder history
Terrestrial Energy Inc. /DE/ SEC filings
Terrestrial Energy Inc. /DE/ company facts
Terrestrial Energy Inc. /DE/ insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 881454110:
As of 31 Mar 2026, 25 institutional investors reported holding 10,588,156 shares of Terrestrial Energy Inc. /DE/ - *W EXP 10/28/203 (IMSRW).
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
3
Latest
Q1 2026
Rows shown
1-3 of 3