Irish Simon purchased $51K of IMSR

Irish Simon (Chief Executive Officer) purchased 16,900 shares of Terrestrial Energy Inc. /DE/ (IMSR) at $3.01 on 2026-10-13.

Original reporting
SEC EDGAR · Irish Simon
Published Oct 14, 2026, 1:15 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Oct 14, 2026, 1:16 PM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
AlphAI market briefInsider activity
Primary signal
MARKET
Neutral
AI market analysis
Mentioned
$IMSR
Relevance
4/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

Low
01

Why it matters

The transaction is a modest insider buy, providing limited new information for traders.

02

Market read

Minor insider purchase with negligible market impact.

03

What to watch

If the insider holds a large existing stake, the incremental purchase is marginal and unlikely to move the stock.

Relevance 4/10Novelty 3/10Timing: post‑market today

Background

SEC Form 4 filing discloses an open‑market purchase of 16,900 shares of Terrestrial Energy Inc. by its CEO for $50,818.

Market effects

None

None

None

Counterpoint

The small insider purchase may be a routine portfolio rebalancing and not indicative of material confidence.

Key entities

  • Terrestrial Energy Inc.

    Issuer of the Form 4 filing.

  • Irish Simon

    CEO of Terrestrial Energy Inc. and reporting insider.

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

Related articles

$IMSRMed

Terrestrial Energy (IMSR) Q2 2026 Earnings Call Transcript

Terrestrial Energy (IMSR) held its Q2 2026 earnings call, reporting $283.4 million cash and investments as of June 30, 2026, and quarterly cash burn of $6.4 million. The company estimated $2.7 billion lifetime revenue per IMSR plant, with blended gross margin of 33%. Net loss was $9.4 million. It cited NRC licensing progress and a Texas A&M RELLIS site lease.

$IMSRMed

Terrestrial Energy Reports Second Quarter 2026 Results

Terrestrial Energy Inc. /DE/ (IMSR) filed an SEC Form 8-K — Results of Operations and Financial Condition. Exhibit 99.1 Terrestrial Energy Reports Second Quarter 2026 Results ​ ~ NRC Approves PIE Methodology Topical Report, Advancing the IMSR Licensing Basis ~ ​ ~ Texas A&M Agreements Signed Covering Development Activities and Ground Leases Providing Site Control for Completion of-Cha

$RIOTMedAI 9/10

How Riot Platforms Stock Gained 57% In May

Riot Platforms’ shares rose 57.3% in May 2026, and were up 114% year to date as of June 4, according to S&P Global Market Intelligence. The stock gained 27% in two days after Riot announced a new power source for future data centers. Riot partnered with Terrestrial Energy to expand molten salt reactor plans near its Texas and Kentucky sites, though timelines and revenues were not specified.

$IMSRHighAI 9/10

IMSR Q4 2025 Earnings Transcript

Terrestrial Energy (IMSR) held its first public earnings call after its transition to public markets. The company reported a $28 million net loss for 2025, driven by higher R&D and G&A costs, and said year-end cash and short-term investments were $298 million. It cited DOE OTA awards, NRC acceptance of a topical report, and selection to site a full-scale IMSR plant at Texas A&M’s RELLIS campus.