---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-036467"
form_type: "8-K"
ticker: "IMSR"
cik: "0002019804"
company_name: "Terrestrial Energy Inc. /DE/"
filed_at: "2026-03-30T23:59:59+00:00"
generated_at: "2026-05-15T08:27:59.886036+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Terrestrial Energy reports 2025 net loss of $28M, cash $298M; IMSR project milestones advanced

## Summary
- Net loss of $28M for full year 2025, up $17M YoY from $11M, driven by higher R&D (+$5M) and G&A (+$10M).
- Cash and short-term investments $298M at Dec 31, 2025; business combination raised ~$292M gross proceeds.
- Texas A&M selected IMSR for commercial plant at RELLIS campus; DOE awarded two pilot projects (TETRA and TEFLA).
- NRC accepted IMSR Principal Design Criteria including inherent reactor power control mechanism.
- 105.8M shares outstanding (81.8M common + 24.0M exchangeable) as of Dec 31, 2025.

## SEC filing metadata
- accession: 0001104659-26-036467
- form_type: 8-K
- ticker: IMSR
- cik: 0002019804
- company_name: Terrestrial Energy Inc. /DE/
- filed_at: 2026-03-30T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2019804/000110465926036467/0001104659-26-036467-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2019804/000110465926036467/tmb-20260330x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-036467
- JSON: https://secwatch.observer/filing/0001104659-26-036467.json
- Plain text: https://secwatch.observer/filing/0001104659-26-036467.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.