Terrestrial Energy Inc IMSR

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Terrestrial Energy Inc. - Common Stock · Company · Nasdaq · Utilities / Utilities - Regulated Electric

Paper trade (simulated — no real money)

Fill: USD 5.3700 · FX 1 USD = 1.264610 SGD · about SGD 6.7910 per unit

Sign in to place simulated trades. USD fills are converted into the SGD portfolio at the displayed rate.

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 11.51 → 5.37 · -53.3%
27.10015.8634.625 1 2 3 4 5 6,7 8 9 10 11 12 13 14 15,16,17,18 19 20,21 22 23,24,25,26 27 28 29 30 31 32,33 34 Sep 25Dec 25Mar 26Jun 26Sep 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 09 Sep 2025 — 10 Sep 2026 (Last year)

Daily Nasdaq prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

No data yet
5.5500 5.6799 5.3300 5.3700 481,918
5.1600 5.7500 5.1600 5.6700 1,450,000
No trading
Weekend
Weekend
5.0600 5.1900 5.0450 5.1500 926,400
5.1400 5.2250 5.0300 5.0800 927,500
4.9400 5.1200 4.9400 5.0900 831,600
5.0300 5.0800 4.9200 4.9800 1,060,400
5.0700 5.2050 5.0200 5.1800 1,421,900
Weekend
Weekend
5.4400 5.4800 5.0800 5.1000 938,900
5.4400 5.5650 5.3500 5.4900 659,400
5.5200 5.7000 5.2000 5.3600 1,067,300
5.2500 5.6300 5.1500 5.5800 1,089,900
5.4000 5.4000 5.1100 5.1900 1,088,200
Weekend
Weekend
5.3500 5.6000 5.3400 5.5700 1,174,900
5.6000 5.6600 5.1710 5.2700 1,112,800
5.5700 5.7800 5.3800 5.6900 992,100
5.5500 5.8100 5.5000 5.5100 1,053,200
5.8750 6.0050 5.7840 5.8200 1,035,700
Weekend
Weekend
34 · 424B3 After-hours · 16:29 ET 424B3 ↗
6.0800 6.1500 5.8400 5.8900 1,003,300
5.8900 6.1550 5.7700 6.0600 1,410,700
5.8500 5.9660 5.6600 5.8100 1,176,400
33 · 10-Q After-hours · 16:30 ET 10-Q ↗
5.7600 6.0800 5.5200 5.6700 1,251,300
32 · 8-K Pre-market · 08:00 ET 8-K ↗
5.7500 5.8300 5.4200 5.4500 1,373,100
Weekend
Weekend
5.5200 5.8800 5.4050 5.8200 1,359,500
5.1200 5.4800 5.0800 5.3600 979,200
5.4400 5.4800 5.1850 5.3500 1,355,800
5.2500 5.5250 5.1500 5.3900 1,768,300
4.8400 5.1100 4.6800 5.0600 1,829,700
Weekend
Weekend
31 · 8-K After-hours · 16:06 ET 8-K ↗
5.3500 5.4500 4.9000 4.9100 8,429,800
4.8700 5.3100 4.8700 5.2200 2,149,900
4.9700 5.0600 4.6050 4.6400 2,071,900
30 · 8-K After-hours · 16:35 ET 8-K ↗
4.9000 5.1600 4.8000 5.0100 1,852,900
5.0200 5.1800 4.8150 5.1100 1,340,800
Weekend
Weekend
5.3300 5.3300 4.8750 4.8800 1,419,000
5.2400 5.5000 5.2100 5.3100 1,619,500
5.4000 5.6400 5.2850 5.3800 1,725,400
4.9600 5.5150 4.9550 5.4600 2,337,600
29 · 8-K Pre-market · 09:15 ET 8-K ↗
4.6000 4.9800 4.4900 4.8600 2,142,900
Weekend
Weekend
28 · 8-K After-hours · 16:28 ET 8-K ↗
4.5300 4.7900 4.3800 4.6250 1,958,000
5.0200 5.0500 4.6400 4.7250 2,793,300
5.4450 5.5600 4.9800 5.1900 1,968,400
5.4650 5.5500 5.3100 5.3550 1,477,400
5.8000 5.8000 5.2650 5.3950 2,564,600
Weekend
Weekend
6.1400 6.1800 5.8300 5.8900 1,828,100
6.0500 6.1800 5.9400 6.1400 1,185,200
5.9000 6.0600 5.7200 5.9850 2,018,600
6.4800 6.5000 5.8800 5.9700 2,049,700
6.5000 6.7000 6.4350 6.6100 1,194,100
Weekend
Weekend
No trading
6.8200 7.2950 6.2900 6.4600 2,784,500
6.9900 7.2900 6.8100 6.8300 1,421,000
7.0000 7.1400 6.8450 7.0800 1,192,500
6.8100 7.1750 6.7800 7.0100 1,368,500
Weekend
Weekend
6.6100 6.8100 6.4000 6.7300 2,045,800
7.2800 7.2800 6.6700 6.7800 1,989,600
7.7900 7.7900 6.8600 7.0800 2,151,100
7.4400 8.1900 7.4200 7.6800 2,066,600
8.3950 8.4000 7.7500 7.8700 3,428,800
Weekend
Weekend
No trading
8.0000 8.6990 7.8030 8.5100 3,293,800
7.5200 8.1300 7.5200 7.6900 2,726,700
7.5500 7.9500 7.3800 7.5200 2,523,900
7.7500 7.8900 7.3700 7.5600 1,924,500
Weekend
Weekend
27 · 8-K After-hours · 16:15 ET 8-K ↗
7.3300 7.7200 7.1600 7.2300 1,996,800
6.8700 7.2500 6.7300 7.2400 2,296,200
7.0600 7.2400 6.7800 6.8400 1,857,900
7.5100 7.7770 6.6500 7.1600 2,899,500
7.7500 7.7800 7.3200 7.4000 2,251,200
Weekend
Weekend
8.7100 8.7300 7.2950 7.5500 5,092,700
8.5000 9.0800 8.2600 8.7300 2,502,100
9.3300 9.3300 8.5600 8.7700 4,067,000
9.3500 9.9500 9.1500 9.6000 4,486,100
9.0400 10.1400 8.8300 9.4900 7,435,500
Weekend
Weekend
8.1000 9.2500 7.6100 9.1300 6,591,500
8.0300 8.5500 7.9000 8.1600 2,228,500
8.1500 8.6500 7.9600 8.1900 2,939,200
7.8100 8.4350 7.6300 8.2700 3,305,100
No trading
Weekend
Weekend
7.0000 8.0700 7.0000 7.6200 4,359,300
6.5400 6.9600 6.5100 6.9300 2,471,200
6.3000 6.7290 6.1000 6.7100 3,222,400
6.3800 6.4100 6.0500 6.2100 3,050,600
7.2500 7.2600 6.3800 6.5300 3,143,000
Weekend
Weekend
7.8000 7.8000 7.1450 7.3000 2,825,800
26 · 424B3 After-hours · 16:46 ET 424B3 ↗ 25 · 424B3 After-hours · 16:45 ET 424B3 ↗ 24 · 10-Q After-hours · 16:30 ET 10-Q ↗
7.1600 8.3510 7.0000 8.1500 5,728,700
23 · 8-K Pre-market · 07:45 ET 8-K ↗
7.2000 7.4700 7.0600 7.1200 1,904,900
7.5800 7.5900 6.9450 7.3800 2,870,400
7.2050 8.0000 7.0350 7.6600 3,367,100
Weekend
Weekend
22 · 8-K After-hours · 16:30 ET 8-K ↗
7.5100 7.5300 7.0250 7.3800 2,597,800
8.2600 8.4800 7.2900 7.3900 4,487,000
7.9400 8.6550 7.6200 8.6200 9,180,700
7.3300 7.4200 6.8810 7.1900 2,043,900
7.4200 7.6400 7.1900 7.2400 1,776,700
Weekend
Weekend
7.2800 7.6000 7.1000 7.5800 1,730,800
6.9000 7.4200 6.9000 7.2600 2,305,900
21 · DEFA14A After-hours · 17:05 ET DEFA14A ↗ 20 · DEF 14A After-hours · 17:01 ET DEF 14A ↗
7.1100 7.2250 6.7000 6.8000 2,563,500
7.3550 7.4400 7.0300 7.1000 2,551,600
7.6200 7.8900 7.3550 7.5900 2,800,800
Weekend
Weekend
7.8700 8.2300 7.2500 7.7950 3,679,500
8.5800 8.9400 7.4300 7.7400 4,485,900
7.3200 8.3000 7.3020 8.2800 3,373,900
7.6700 7.8300 7.0650 7.0900 2,952,700
7.4500 7.9300 7.2700 7.6200 3,127,600
Weekend
Weekend
7.3000 8.1500 7.1200 7.6050 5,154,400
19 · 8-K After-hours · 16:40 ET 8-K ↗
7.3700 7.3900 6.8900 7.0900 1,992,600
7.2000 7.5900 7.0650 7.1600 2,987,400
7.0000 7.2500 6.8300 7.0500 2,153,700
6.2900 6.6500 6.1070 6.5900 1,086,100
Weekend
Weekend
6.3000 6.4200 6.1520 6.3400 1,175,300
6.1000 6.2750 5.9100 6.2400 1,608,400
6.3300 6.4500 6.0300 6.1750 1,884,500
6.1500 6.1750 5.7600 5.9500 1,225,500
6.2000 6.3000 6.1500 6.2200 778,300
Weekend
Weekend
No trading
5.8500 6.4000 5.8300 6.2400 1,245,200
6.0600 6.3600 6.0500 6.1400 1,177,200
5.6100 6.0600 5.5000 6.0050 1,714,100
18 · 424B3 After-hours · 18:10 ET 424B3 ↗ 17 · 424B3 After-hours · 18:10 ET 424B3 ↗ 16 · 10-K After-hours · 17:32 ET 10-K ↗
6.0600 6.1100 5.3300 5.5300 2,798,800
15 · 8-K Pre-market · 07:30 ET 8-K ↗
Weekend
Weekend
6.3500 6.4000 5.9700 6.0100 1,279,300
6.6800 6.8500 6.4500 6.4500 1,276,900
6.5000 6.8490 6.4800 6.8200 1,419,500
6.2500 6.4100 6.0500 6.3500 800,300
6.0600 6.4000 5.9200 6.3300 1,301,300
Weekend
Weekend
6.0900 6.2290 5.9050 6.1200 6,634,500
6.2000 6.2500 5.7700 6.1200 1,959,500
6.4300 6.4900 6.2800 6.4100 916,700
6.5100 6.6900 6.3900 6.5800 1,057,400
6.6000 6.6420 6.3700 6.4600 1,085,000
Weekend
Weekend
6.8000 6.8900 6.4100 6.4700 788,500
6.7400 6.8950 6.5050 6.6700 1,052,300
6.8000 7.0900 6.7000 6.9200 916,800
6.7500 7.0960 6.7300 6.8500 1,102,600
6.2900 6.8000 6.1600 6.7200 1,264,400
Weekend
Weekend
6.5000 7.0900 6.4300 6.4900 1,053,700
7.0000 7.1900 6.5000 6.7500 1,311,500
6.8200 7.1000 6.5550 7.0600 1,214,300
6.6000 6.7000 6.1300 6.5950 1,548,500
6.4900 7.1550 6.4100 7.0200 1,573,300
Weekend
Weekend
7.1900 7.3100 6.7720 6.9000 1,725,500
7.1400 7.5900 6.8840 7.5200 1,778,000
6.7300 7.4400 6.5900 7.1100 2,315,800
6.0300 6.6000 6.0200 6.5700 1,501,200
6.1280 6.3200 6.0100 6.1100 1,228,100
Weekend
Weekend
6.6600 6.8400 6.2800 6.3300 1,474,800
6.8500 6.9000 6.5200 6.8500 1,440,100
6.9400 7.2400 6.8000 6.8600 1,207,300
6.9600 7.1200 6.7420 6.9400 1,200,700
No trading
Weekend
Weekend
6.9400 7.3200 6.7600 7.0400 1,239,400
7.5300 7.6300 6.8500 6.9100 2,396,300
7.8800 8.0300 7.0300 7.4100 1,675,300
8.0200 8.1400 7.7000 7.8000 1,576,400
8.3300 8.4800 7.9700 8.2100 1,748,500
Weekend
Weekend
7.7000 8.3500 7.5000 8.3100 2,119,600
7.5300 7.8000 7.1900 7.4000 2,121,600
8.8000 8.8100 7.6500 7.9900 3,026,800
8.9000 9.2210 8.3800 8.9300 2,213,900
9.0500 9.4900 8.6000 8.8200 2,335,400
Weekend
Weekend
9.0000 9.5700 8.8400 9.1100 2,716,700
14 · 8-K After market open · 12:28 ET 8-K ↗
10.9300 11.2400 9.1050 9.2450 4,905,000
10.5000 10.8200 9.9800 10.4100 3,222,700
10.4600 10.6000 9.8020 10.4350 3,546,100
12.3100 12.4170 10.4400 10.4900 5,013,500
Weekend
Weekend
12.7400 13.0600 11.9400 12.4000 4,924,600
11.8000 13.5250 11.6810 13.2700 9,704,300
11.1600 11.8380 9.8650 10.6400 4,823,300
11.0000 11.3000 10.4000 10.4300 3,487,600
No trading
Weekend
Weekend
11.3000 12.4510 11.3000 11.6900 3,186,500
10.6000 11.9900 10.5110 11.3800 3,816,900
10.6300 11.7000 10.3100 10.5000 4,349,500
11.6200 12.2600 10.6800 10.7700 6,922,500
9.4750 11.4000 9.0900 11.1600 7,284,500
Weekend
Weekend
9.3400 9.7300 8.6000 9.3700 5,352,000
8.3000 8.6500 8.0900 8.3900 2,489,100
9.0000 9.5000 8.5100 8.5700 4,962,600
8.6350 9.2600 8.1600 9.1100 21,887,800
13 · 424B3 After-hours · 17:08 ET 424B3 ↗
6.6600 7.0900 6.5400 6.9900 1,977,500
Weekend
Weekend
6.2800 6.5300 6.1400 6.5300 1,325,100
No trading
6.0500 6.3000 5.9700 6.1100 1,513,100
12 · 424B3 After-hours · 17:03 ET 424B3 ↗
6.2500 6.3800 5.9500 6.1200 2,188,300
6.6700 6.8900 6.2500 6.2800 1,675,500
Weekend
Weekend
7.0000 7.0000 6.5100 6.8600 1,669,300
No trading
7.0000 7.1000 6.8250 7.0400 773,200
7.3400 7.4000 6.8850 7.0400 1,738,100
11 · S-1/A After market open · 11:40 ET S-1/A ↗
7.7100 8.0550 7.3600 7.4900 1,239,000
Weekend
Weekend
7.7500 8.0300 7.5900 7.7400 5,816,500
7.2600 7.6230 7.2400 7.4600 1,610,300
8.1300 8.3530 7.0500 7.0900 2,713,200
8.0600 8.5000 7.9500 8.1100 1,078,000
8.8400 8.8400 7.9200 8.2400 1,816,400
Weekend
Weekend
9.5700 10.0700 8.7900 8.8200 1,229,400
9.1000 9.7500 8.7100 9.5900 1,233,100
9.2000 9.4850 8.7200 9.2000 1,136,600
9.2600 9.5290 8.9000 9.3800 1,367,800
9.5400 9.7600 9.2600 9.4050 1,267,300
Weekend
Weekend
10.5000 10.5000 9.1300 9.3100 1,863,900
9.5100 11.0400 9.4000 10.7900 2,255,300
9.0400 9.7250 8.5000 9.6000 1,793,000
8.9800 9.5000 8.8800 9.2300 1,402,500
9.0500 9.1300 8.4800 8.7200 1,234,400
Weekend
Weekend
9.2500 9.9100 9.2400 9.4400 1,576,400
No trading
8.5200 9.2900 7.6600 9.0900 2,527,100
10 · S-1 Next filing day · accepted 25 Nov, 21:48 ET S-1 ↗
8.5600 8.8300 7.5200 8.4600 3,200,000
9 · 8-K After-hours · 16:05 ET FORM 8-K ↗
9.5400 9.7900 8.6510 8.8100 2,619,300
Weekend
Weekend
10.0200 10.1100 9.2100 9.6200 2,203,400
8 · 10-Q/A Next filing day · accepted 20 Nov, 20:34 ET FORM 10-Q/A ↗
11.3000 11.9000 10.0300 10.1700 1,844,900
12.0000 12.1800 11.0500 11.1800 1,404,600
11.3500 12.2900 11.0600 11.8500 1,206,100
11.4200 12.0000 10.8920 11.6000 1,543,700
Weekend
Weekend
7 · 10-Q After-hours · 16:59 ET QUARTERLY REPORT ↗ 6 · 8-K/A After-hours · 16:52 ET FORM 8-K/A ↗
11.3200 12.7000 10.9000 12.0700 2,702,400
12.9000 13.3070 11.8800 12.0000 1,818,800
13.3500 14.2800 12.8500 13.4800 1,316,900
13.4900 13.7500 12.8100 13.4400 860,000
14.2600 14.2850 13.2500 13.7300 1,340,000
Weekend
Weekend
13.0600 14.0600 12.8200 13.9100 1,942,000
15.0200 15.4900 13.5800 13.7000 1,588,400
14.5100 16.0000 14.4800 15.5300 2,348,100
14.0000 14.7500 13.5500 13.6600 2,234,100
5 · 8-K After-hours · 17:28 ET CURRENT REPORT ↗
15.8800 16.3800 14.9100 15.4500 1,945,800
Weekend
Weekend
16.4600 17.3990 15.7500 17.0000 1,656,500
18.7000 18.7900 16.0500 16.4600 2,811,700
4 · 8-K After-hours · 17:24 ET CURRENT REPORT ↗
19.6000 21.0000 18.0000 19.1000 2,103,800
18.2100 19.1000 17.3300 18.0400 1,554,700
21.4700 21.6000 17.8500 17.8850 2,290,800
Weekend
Weekend
19.6050 20.6000 18.5100 20.3000 1,777,900
17.1000 19.5000 17.1000 19.0500 2,430,500
3 · 8-K After-hours · 17:18 ET CURRENT REPORT ↗
17.4300 18.0000 16.0100 17.4200 5,378,200
22.8300 23.6000 18.8600 19.1900 5,254,600
27.0200 27.1580 21.1100 22.6900 6,038,000
Weekend
Weekend
23.2800 26.5200 22.0500 25.9200 5,010,000
29.5200 29.9500 23.0000 23.2600 6,108,300
29.9500 31.5000 24.0610 27.1000 11,776,900
21.5400 26.0000 20.5900 24.9800 4,629,400
21.6900 21.9700 20.4000 21.0000 2,946,900
Weekend
Weekend
18.4900 20.5500 18.0000 18.8600 3,535,600
17.5500 18.6200 17.1500 18.0700 1,395,500
17.7200 18.2500 17.0000 17.0900 1,361,000
18.1000 19.6000 16.4400 17.3900 2,813,300
18.7500 18.8000 17.6100 17.8700 2,290,300
Weekend
Weekend
17.0100 18.1800 16.9000 17.1600 2,102,900
16.3000 17.6000 15.9200 16.8800 2,244,200
16.7500 16.9200 15.8300 16.0600 1,834,900
15.2400 16.7500 15.1300 16.4100 3,515,900
2 · 8-K After-hours · 17:12 ET CURRENT REPORT ↗
16.6000 16.6510 15.1600 15.2800 1,724,200
Weekend
Weekend
1 · 424B3 After-hours · 16:32 ET PROSPECTUS ↗
16.2100 16.8900 15.1100 15.8100 2,131,700
16.5000 17.7390 15.7500 15.7900 3,504,600
16.5900 18.0700 15.7800 17.6200 4,658,900
15.2900 16.4800 14.5200 15.7800 7,431,200
13.8400 13.9500 13.6000 13.9400 1,659,300
Weekend
Weekend
12.9000 13.8800 12.8800 13.5000 2,416,600
12.7500 12.9700 12.6400 12.8000 1,204,500
12.7300 12.8900 12.5700 12.7000 721,500
12.4200 12.7800 12.3400 12.5800 1,410,800
12.2900 12.4000 12.1500 12.3050 1,575,600
Weekend
Weekend
11.9000 12.2950 11.8250 12.0650 1,216,300
11.7100 11.8600 11.7100 11.8500 485,800
11.7500 11.8900 11.6000 11.7100 704,400
11.5900 11.6100 11.5100 11.5100 173,500

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

34 424B3 424B3 (opens SEC filing in a new tab) After-hours · 16:29 ET Summarise
33 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
32 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
31 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
30 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
29 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:15 ET Summarise
28 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:28 ET Summarise
27 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
26 424B3 424B3 (opens SEC filing in a new tab) After-hours · 16:46 ET Summarise
25 424B3 424B3 (opens SEC filing in a new tab) After-hours · 16:45 ET Summarise
24 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
23 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:45 ET Summarise
22 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
21 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 17:05 ET Summarise
20 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 17:01 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:40 ET Summarise
18 424B3 424B3 (opens SEC filing in a new tab) After-hours · 18:10 ET Summarise
17 424B3 424B3 (opens SEC filing in a new tab) After-hours · 18:10 ET Summarise
16 10-K 10-K (opens SEC filing in a new tab) After-hours · 17:32 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:30 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) After market open · 12:28 ET Summarise
13 424B3 424B3 (opens SEC filing in a new tab) After-hours · 17:08 ET Summarise
12 424B3 424B3 (opens SEC filing in a new tab) After-hours · 17:03 ET Summarise
11 S-1/A S-1/A (opens SEC filing in a new tab) After market open · 11:40 ET Summarise
10 S-1 S-1 (opens SEC filing in a new tab) Next filing day · accepted 25 Nov, 21:48 ET Summarise
9 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
8 10-Q/A FORM 10-Q/A (opens SEC filing in a new tab) Next filing day · accepted 20 Nov, 20:34 ET Summarise
7 10-Q QUARTERLY REPORT (opens SEC filing in a new tab) After-hours · 16:59 ET Summarise
6 8-K/A FORM 8-K/A (opens SEC filing in a new tab) After-hours · 16:52 ET Summarise
5 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 17:28 ET Summarise
4 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 17:24 ET Summarise
3 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 17:18 ET Summarise
2 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 17:12 ET Summarise
1 424B3 PROSPECTUS (opens SEC filing in a new tab) After-hours · 16:32 ET Summarise