Terrestrial Energy (IMSR) Stock Analysis & Price (Updated Oct 16, 2026, 4:00 PM ET)
Updated Oct 16, 2026, 4:00 PM ET
- Closed at $3.05, -5.28% vs the prior close of $3.22.
- Volume 1.23M shares, 0.9x its 50-day average.
- New SEC filings: 4 (Oct 15, 2026).
- No new insider buys or sales reported since the prior session.
IMSR slides 5.3% to $3.05. Closed at $3.05, -5.28% vs the prior close of $3.22. Day range $3.03–$3.25, opened at $3.24.
IMSR daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 16, 2026 — IMSR slides 5.3% to $3.05
- Closed at $3.05, -5.28% vs the prior close of $3.22. Day range $3.03–$3.25, opened at $3.24.
- Volume was 1.23M shares, 0.9x its 50-day average of 1.39M.
- Price is -34.4% vs its 50-day average ($4.65) and -53.8% vs its 200-day average ($6.61).
- 52-week range $2.79–$29.95; today's close sits at 1% of that range, 89.8% below the 52-week high.
Oct 15, 2026 — IMSR jumps 9.5% to $3.22
- Closed at $3.22, +9.52% vs the prior close of $2.94. Day range $2.79–$3.24, opened at $2.86.
- Volume was 2.41M shares, 1.8x its 50-day average of 1.37M.
- Price is -31.4% vs its 50-day average ($4.69) and -51.4% vs its 200-day average ($6.62).
- 52-week range $2.79–$31.50; today's close sits at 1% of that range, 89.8% below the 52-week high.
Oct 14, 2026 — IMSR slides 5.5% to $2.94, a 52-week low
- Closed at $2.94, -5.47% vs the prior close of $3.11. Day range $2.88–$3.08, opened at $3.05.
- Volume was 1.89M shares, 1.4x its 50-day average of 1.37M.
- Price is -37.9% vs its 50-day average ($4.74) and -55.7% vs its 200-day average ($6.64).
- 52-week range $2.79–$31.50; today's close sits at 1% of that range, 90.7% below the 52-week high.
Oct 13, 2026 — IMSR jumps 5.1% to $3.11 on 1.9x normal volume
- Closed at $3.11, +5.07% vs the prior close of $2.96. Day range $2.79–$3.17, opened at $2.90.
- Volume was 2.64M shares, 1.9x its 50-day average of 1.35M — unusually heavy trading.
- Price is -35.0% vs its 50-day average ($4.79) and -53.3% vs its 200-day average ($6.66).
- 52-week range $2.79–$31.50; today's close sits at 1% of that range, 90.1% below the 52-week high.
Oct 12, 2026 — IMSR slides 9.8% to $2.96, a 52-week low, 4 down days in a row
- Closed at $2.96, -9.76% vs the prior close of $3.28. Day range $2.95–$3.25, opened at $3.25.
- Volume was 1.50M shares, 1.0x its 50-day average of 1.49M.
- Price is -38.7% vs its 50-day average ($4.83) and -55.7% vs its 200-day average ($6.68).
- 52-week range $2.95–$31.50; today's close sits at 0% of that range, 90.6% below the 52-week high.
- That makes 4 straight losses.
Oct 9, 2026 — IMSR slides 3.5% to $3.28, a 52-week low, 3 down days in a row
- Closed at $3.28, -3.53% vs the prior close of $3.40. Day range $3.22–$3.50, opened at $3.50.
- Volume was 1.83M shares, 1.2x its 50-day average of 1.50M.
- Price is -32.6% vs its 50-day average ($4.86) and -51.0% vs its 200-day average ($6.70).
- 52-week range $3.22–$31.50; today's close sits at 0% of that range, 89.6% below the 52-week high.
- That makes 3 straight losses.
Oct 8, 2026 — IMSR slides 6.8% to $3.40, a 52-week low
- Closed at $3.40, -6.85% vs the prior close of $3.65. Day range $3.32–$3.59, opened at $3.57.
- Volume was 2.14M shares, 1.4x its 50-day average of 1.50M.
- Price is -30.7% vs its 50-day average ($4.90) and -49.4% vs its 200-day average ($6.72).
- 52-week range $3.32–$31.50; today's close sits at 0% of that range, 89.2% below the 52-week high.
Oct 7, 2026 — IMSR slides 7.1% to $3.65, a 52-week low
- Closed at $3.65, -7.12% vs the prior close of $3.93. Day range $3.60–$3.82, opened at $3.78.
- Volume was 1.33M shares, 0.9x its 50-day average of 1.51M.
- Price is -25.9% vs its 50-day average ($4.93) and -45.9% vs its 200-day average ($6.74).
- 52-week range $3.60–$31.50; today's close sits at 0% of that range, 88.4% below the 52-week high.
Oct 6, 2026 — IMSR jumps 4.8% to $3.93
- Closed at $3.93, +4.80% vs the prior close of $3.75. Day range $3.80–$4.09, opened at $3.80.
- Volume was 1.51M shares, 1.0x its 50-day average of 1.50M.
- Price is -20.7% vs its 50-day average ($4.95) and -41.9% vs its 200-day average ($6.76).
- 52-week range $3.66–$31.50; today's close sits at 1% of that range, 87.5% below the 52-week high.
Oct 5, 2026 — IMSR dips 0.8% to $3.75, a 52-week low, 9 down days in a row
- Closed at $3.75, -0.79% vs the prior close of $3.78. Day range $3.66–$3.85, opened at $3.83.
- Volume was 1.20M shares, 0.8x its 50-day average of 1.51M.
- Price is -24.7% vs its 50-day average ($4.98) and -44.7% vs its 200-day average ($6.78).
- 52-week range $3.66–$31.50; today's close sits at 0% of that range, 88.1% below the 52-week high.
- That makes 9 straight losses.
Oct 2, 2026 — IMSR dips 1.3% to $3.78, a 52-week low, 8 down days in a row
- Closed at $3.78, -1.31% vs the prior close of $3.83. Day range $3.72–$3.94, opened at $3.94.
- Volume was 1.21M shares, 0.8x its 50-day average of 1.52M.
- Price is -24.4% vs its 50-day average ($5.00) and -44.4% vs its 200-day average ($6.80).
- 52-week range $3.71–$31.50; today's close sits at 0% of that range, 88.0% below the 52-week high.
- That makes 8 straight losses.
IMSR latest news & SEC filings
Every SEC filing by or about IMSR in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 15, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Pardee Charles G bought 7,500 shares at $2.95 (≈$22.12K) on Oct 14, 2026; now holds 14,258
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Oct 14, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Irish Simon bought 16,900 shares at $3.01 (≈$50.82K) on Oct 13, 2026; now holds 2,312,834
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Oct 13, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Buckman Frederick W bought 12,000 shares at $3.28 (≈$39.34K) on Oct 9, 2026; now holds 18,669
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Aug 14, 2026 · Form 424B3 — Prospectus / supplement for an offering or resale
Prospectus / supplement for an offering or resale
An offering document: new shares or debt may be sold, which can increase the share count (dilution) or debt load. Size and terms are in the prospectus.
Aug 11, 2026 · Form 10-Q — Quarterly report
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Net income: -$9.40M (prior year -$6.25M) (loss widened vs Jun 30, 2025)
- Diluted EPS: -$0.09 (prior year -$0.10) (loss narrowed vs Jun 30, 2025)
Aug 11, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 2.02 — Reported results of operations (earnings release).
This is a results-day filing: the earnings press release is attached as an exhibit.
Jul 31, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Jul 31, 2026 · Form 3 — New insider holdings
Initial insider ownership statement (Form 3) — a new director, officer or 10% owner disclosed their holdings
Jul 31, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 5.02 — Change in directors or officers (appointment, departure or pay).
Jul 28, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 5.02 — Change in directors or officers (appointment, departure or pay).
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
Jul 27, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Jul 21, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
Jul 17, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 5.02 — Change in directors or officers (appointment, departure or pay).
Things to know before you trade IMSR
- Last results release: Aug 11, 2026 (8-K Item 2.02). Previous ones: May 14, 2026, Mar 30, 2026. Based on that rhythm, the next report is likely around Nov 10, 2026 — an estimate, not a confirmed date.
- How much it moves: over the last 20 sessions the average daily move was 4.46% (largest 9.8%). That is a volatile stock.
- Liquidity: about 1.53M shares (≈$4.65M) trade per day on average.
- 52-week position: $3.05 vs a range of $2.79–$29.95 (1% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 0 sales.
- Latest filings: 10-Q Aug 11, 2026; 8-K Aug 11, 2026; 8-K Jul 31, 2026.
- Listing: Nasdaq · industry: Fabricated Plate Work (Boiler Shops).
IMSR market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 16, 2026 | 3.24 | 3.25 | 3.03 | 3.05 | 1.23M |
| Oct 15, 2026 | 2.86 | 3.24 | 2.79 | 3.22 | 2.42M |
| Oct 14, 2026 | 3.05 | 3.08 | 2.88 | 2.94 | 1.89M |
| Oct 13, 2026 | 2.90 | 3.17 | 2.79 | 3.11 | 2.64M |
| Oct 12, 2026 | 3.25 | 3.25 | 2.95 | 2.96 | 1.50M |
| Oct 9, 2026 | 3.50 | 3.50 | 3.22 | 3.28 | 1.83M |
| Oct 8, 2026 | 3.57 | 3.59 | 3.32 | 3.40 | 2.14M |
| Oct 7, 2026 | 3.78 | 3.82 | 3.60 | 3.65 | 1.33M |
| Oct 6, 2026 | 3.80 | 4.09 | 3.80 | 3.93 | 1.51M |
| Oct 5, 2026 | 3.83 | 3.85 | 3.66 | 3.75 | 1.20M |
| Oct 2, 2026 | 3.94 | 3.94 | 3.72 | 3.78 | 1.21M |
| Oct 1, 2026 | 3.85 | 3.94 | 3.71 | 3.83 | 1.71M |
| Sep 30, 2026 | 4.05 | 4.16 | 3.87 | 3.89 | 1.42M |
| Sep 29, 2026 | 4.20 | 4.20 | 3.93 | 3.97 | 1.57M |
| Sep 28, 2026 | 4.21 | 4.26 | 4.03 | 4.12 | 1.24M |
| Sep 25, 2026 | 4.40 | 4.41 | 4.22 | 4.30 | 818.70K |
| Sep 24, 2026 | 4.36 | 4.46 | 4.32 | 4.36 | 891.30K |
| Sep 23, 2026 | 4.66 | 4.67 | 4.41 | 4.43 | 836.80K |
| Sep 22, 2026 | 4.92 | 4.95 | 4.48 | 4.63 | 1.69M |
| Sep 21, 2026 | 4.50 | 4.65 | 4.45 | 4.50 | 1.45M |
About Terrestrial Energy
Terrestrial Energy (IMSR) is listed on the Nasdaq and classified by the SEC under “Fabricated Plate Work (Boiler Shops)”. Its business address is in CHARLOTTE, NC. State of incorporation: DE. Fiscal year ends December 31. SEC CIK 2019804.
IMSR board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| Frederick W Buckman | Director | Dec 22, 2025 |
| David John Hill | Director | Dec 22, 2025 |
| Simon Irish | Chief Executive Officer | Nov 7, 2025 |
| William D Johnson | Director | Jan 9, 2026 |
| Robert Wood Jones | Director | Dec 22, 2025 |
| David Michael Leblanc | Chief Technology Officer | Apr 14, 2026 |
| John Hugh Macdiarmid | Director | Dec 22, 2025 |
| Shawn Matthews | Director | Dec 22, 2025 |
| Kathryn Ann Mccarthy | Director | Jul 27, 2026 |
| Charles G Pardee | Director | Dec 22, 2025 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Pamela Beth Cowan | EVP, Engineering | Jul 31, 2026 |
| Simon Irish | Chief Executive Officer | Nov 7, 2025 |
| David Michael Leblanc | Chief Technology Officer | Apr 14, 2026 |
| Steven M. Millsap | General Counsel | Apr 14, 2026 |
| William F. Smith | Chief Operating Officer | Apr 14, 2026 |
| Brian Patrick Thrasher | Chief Financial Officer | Apr 14, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| No open-market insider buys or sales reported in the last 12 months. | ||||
IMSR financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| Dec 31, 2025 | — | $-28.02M | -0.39 | $-16.47M |
| Dec 31, 2024 | $248.36K | $-11.49M | -0.19 | $-8.20M |
Latest balance sheet: total assets $289.87M, total liabilities $8.21M, cash $130.74M (as of Jun 30, 2026).
IMSR earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| Aug 11, 2026 | 8-K Item 2.02 (results) | $5.67 |
| May 14, 2026 | 8-K Item 2.02 (results) | $8.15 |
| Mar 30, 2026 | 8-K Item 2.02 (results) | $5.53 |
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 16, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.