ClearSign Technologies Corporation CLIR

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ClearSign Technologies Corporation - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 3.4900 · FX 1 USD = 1.288650 SGD · about SGD 4.4974 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 6.30 → 3.49 · -44.6%
10.6006.9253.250 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 35 Jul 25Oct 25Jan 26Apr 26Jul 26

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

Price & SEC Filing History 26 Jul 2025 — 27 Jul 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
Weekend
Weekend
3.3400 3.4900 3.3400 3.4900 32,500
3.2000 3.7200 3.2000 3.3500 62,300
35 · 8-K Pre-market · 08:45 ET FORM 8-K ↗
3.3500 3.4000 3.1600 3.2500 7,400
3.4000 3.4300 3.3500 3.3500 3,400
3.5500 3.5500 3.3200 3.3700 13,600
Weekend
Weekend
3.6500 3.6600 3.5200 3.6200 3,800
3.6400 3.6900 3.6400 3.6400 2,800
3.6000 3.7200 3.6000 3.7200 3,600
3.6800 3.8700 3.6800 3.7100 10,600
3.7100 3.7900 3.6100 3.6200 16,700
Weekend
Weekend
3.7500 3.7500 3.6600 3.7200 6,200
3.7200 3.8000 3.7000 3.7500 6,000
3.9100 3.9100 3.6100 3.7000 6,000
4.0800 4.1400 3.8200 3.8400 13,000
34 · 8-K After-hours · 16:06 ET FORM 8-K ↗ 33 · 424B5 After-hours · 16:05 ET 424B5 ↗
4.0300 4.1000 3.9500 4.1000 10,100
Weekend
Weekend
No trading
4.0800 4.2400 4.0600 4.0600 9,500
3.7900 4.2700 3.7600 4.1200 34,100
3.6100 3.8800 3.5800 3.6700 17,500
3.5500 3.6900 3.5000 3.6400 6,300
Weekend
Weekend
3.4000 3.7000 3.3900 3.6200 14,700
3.5400 3.6300 3.3900 3.3900 14,400
3.6900 3.8600 3.5200 3.5200 5,200
3.6700 3.7700 3.5900 3.7100 4,900
3.8900 3.9400 3.6200 3.7200 19,000
Weekend
Weekend
No trading
32 · 8-K After-hours · 16:15 ET FORM 8-K ↗
4.1000 4.1000 3.7100 3.7900 34,000
4.1400 4.1400 4.0200 4.0500 14,000
4.3300 4.3300 4.0700 4.1200 25,800
4.2800 4.2800 4.0800 4.1400 12,500
Weekend
Weekend
4.1800 4.2900 4.0800 4.0800 11,000
4.3200 4.3200 4.0700 4.1700 16,100
4.2800 4.3400 4.0700 4.1900 18,200
31 · 8-K After-hours · 16:30 ET FORM 8-K ↗
4.2500 4.4300 4.0700 4.1600 22,800
3.9300 4.2500 3.9300 4.1500 19,700
Weekend
Weekend
4.3100 4.4000 3.9400 3.9400 9,500
4.3500 4.4800 4.2800 4.2800 17,500
4.4000 4.4700 4.3800 4.3800 11,000
4.4500 4.5500 4.3600 4.4600 9,700
4.5500 4.6600 3.7300 4.4700 7,900
30 · 8-K Pre-market · 08:30 ET FORM 8-K ↗ 29 · 424B5 Pre-market · 08:25 ET 424B5 ↗
Weekend
Weekend
4.3900 4.6900 4.2700 4.6300 58,000
28 · 424B5 After-hours · 16:31 ET 424B5 ↗ 27 · 8-K After-hours · 16:19 ET FORM 8-K ↗
4.4500 4.7500 4.4100 4.5600 43,400
4.4000 4.6500 4.4000 4.4500 14,500
4.6100 4.8800 4.6000 4.6300 51,500
No trading
Weekend
Weekend
4.7400 4.8900 4.6100 4.8500 17,900
26 · 8-K After-hours · 16:30 ET FORM 8-K ↗
4.7300 5.0100 4.5900 5.0100 8,100
4.6100 5.0900 4.5100 4.9000 16,900
4.4700 4.6500 4.4600 4.6000 6,200
4.7100 4.8200 4.4100 4.4100 25,400
Weekend
Weekend
4.8600 5.0700 4.6200 4.7100 21,700
25 · 10-Q Pre-market · 09:20 ET 10-Q ↗
4.6100 5.5600 4.5700 5.2100 29,300
4.4900 4.7400 4.3500 4.4500 16,100
4.3800 4.7500 4.3700 4.5500 17,300
4.6100 4.6100 4.1800 4.3600 22,500
Weekend
Weekend
4.8000 4.8000 4.2100 4.5400 26,200
4.9700 4.9800 4.6200 4.8300 16,300
4.9100 5.0100 4.8000 4.9100 15,700
4.9400 4.9900 4.8800 4.9100 5,000
5.0300 5.1000 4.5700 5.0600 16,100
Weekend
Weekend
5.0500 5.2200 5.0100 5.1200 14,600
5.3300 5.3300 5.0000 5.0000 9,100
5.3300 5.5600 5.3300 5.3700 2,900
24 · DEFA14A After-hours · 16:05 ET DEFA14A ↗ 23 · DEF 14A After market open · 11:09 ET DEF 14A ↗
5.3200 5.5100 5.3200 5.3300 9,400
4.8800 5.3300 4.7300 5.2300 14,700
Weekend
Weekend
5.0800 5.2600 5.0000 5.0000 5,700
5.4800 5.5000 5.0600 5.1600 15,200
5.4800 5.8000 5.4800 5.5900 13,000
5.4400 5.5300 5.2100 5.4000 11,900
5.5600 5.6600 5.1900 5.4100 56,000
Weekend
Weekend
5.3300 5.6800 5.3300 5.4500 21,200
5.9000 6.1400 5.2200 5.3300 17,500
5.6000 5.9600 5.6000 5.8400 17,700
5.4700 5.6000 5.2600 5.3800 18,700
5.2900 5.3900 4.9300 5.3900 47,800
Weekend
Weekend
22 · 8-K After-hours · 16:15 ET FORM 8-K ↗
6.2800 6.5900 4.7300 5.2900 133,100
6.3000 6.8700 5.9900 6.1800 58,100
6.5800 6.5900 5.9900 6.4700 40,200
6.4500 6.9800 5.5500 6.1500 76,900
4.8500 7.5600 4.8000 6.9400 691,000
Weekend
Weekend
No trading
4.7200 4.9400 4.3100 4.8300 8,400
4.3900 4.7100 4.3500 4.7100 13,600
21 · 10-K After-hours · 16:05 ET 10-K ↗
3.6900 4.4600 3.6900 4.3600 10,700
20 · 8-K After-hours · 17:29 ET FORM 8-K ↗
3.7800 4.0400 3.6000 3.8500 43,900
Weekend
Weekend
3.7100 3.7600 3.2400 3.7400 9,800
3.5000 4.0600 3.5000 3.7200 19,400
3.6500 3.7300 3.5700 3.5700 7,100
3.5300 3.7100 3.5300 3.5300 8,000
3.7800 3.8400 3.5200 3.6000 14,700
Weekend
Weekend
3.6300 3.9600 3.3700 3.4600 33,100
3.6600 3.8300 3.5600 3.6100 16,500
4.0000 4.0300 3.6700 3.7300 28,700
4.2600 4.3400 4.0100 4.0400 25,800
4.6200 4.7500 4.2600 4.3600 24,900
Weekend
Weekend
4.2000 4.4000 3.9000 4.3000 32,170
4.8000 5.0000 4.4000 4.4000 32,570
5.1000 5.1000 4.4000 4.5000 61,920
19 · 8-K After-hours · 16:20 ET FORM 8-K ↗
5.4000 6.4000 5.4000 5.7000 63,670
5.6000 5.6000 5.2000 5.4000 6,300
Weekend
Weekend
5.2000 5.8000 5.2000 5.4000 19,330
5.2000 5.4000 5.2000 5.2000 9,280
18 · 8-K After-hours · 17:00 ET FORM 8-K ↗
5.5000 5.5000 5.1000 5.4000 18,930
5.4000 5.6000 5.4000 5.5000 2,530
5.7000 5.8000 5.6000 5.6000 5,860
Weekend
Weekend
5.4000 5.7000 5.4000 5.6000 4,400
5.5000 5.8000 5.5000 5.6000 6,700
17 · 8-K After-hours · 17:15 ET FORM 8-K ↗
5.7000 5.9000 5.6000 5.8000 6,790
6.0000 6.1000 5.5000 5.9000 7,690
5.9000 6.0000 5.8000 5.9000 4,690
Weekend
Weekend
6.2000 6.4000 5.9000 5.9000 3,720
6.2000 6.4000 6.1000 6.2000 7,340
6.2000 6.5000 6.0000 6.1000 4,250
6.1000 6.3000 5.9000 6.3000 2,220
No trading
Weekend
Weekend
6.0000 6.3000 5.9000 6.1000 12,360
5.9000 6.1000 5.6000 6.1000 8,170
6.1000 6.3000 5.8000 5.8000 8,440
6.5000 6.5000 6.1000 6.1000 6,610
6.2000 7.0000 5.9000 6.6000 24,760
Weekend
Weekend
5.8000 5.9000 5.5000 5.8000 5,430
5.7000 5.9000 5.6000 5.7000 8,670
6.0000 6.1000 5.7000 5.9000 8,270
5.7000 6.2000 5.6000 6.1000 6,860
16 · DEF 14A After-hours · 16:05 ET DEF 14A ↗
5.9000 6.5000 5.4000 6.0000 16,100
Weekend
Weekend
6.1000 6.5000 6.0000 6.0000 130,620
6.4000 6.5000 5.8000 6.0000 11,850
6.5000 6.9000 6.1000 6.2000 13,560
6.9000 7.2000 6.7000 6.7000 14,630
7.2000 7.2000 7.0000 7.0000 5,390
Weekend
Weekend
15 · PRE 14A After-hours · 17:11 ET PRE 14A ↗
7.2000 7.5000 7.0000 7.0000 3,180
6.8000 7.5000 6.7000 7.2000 23,790
7.5000 7.7000 6.3000 6.8000 22,650
7.8000 7.9000 7.5000 7.5000 7,360
No trading
Weekend
Weekend
7.9000 8.1000 7.6000 7.6000 9,370
7.5000 8.1000 7.5000 7.9000 24,910
7.7000 7.8000 7.5000 7.5000 3,520
7.3000 7.7000 7.0000 7.7000 10,720
7.8000 7.8000 7.0000 7.4000 22,540
Weekend
Weekend
7.7000 8.1000 7.4000 7.8000 26,430
7.7000 7.9000 6.9000 7.3000 12,510
14 · 8-K After-hours · 16:05 ET FORM 8-K ↗
6.5000 7.9000 6.0000 7.7000 43,760
6.9000 6.9000 5.8000 6.0000 25,850
6.0000 6.9000 5.8000 6.4000 18,140
Weekend
Weekend
5.6000 5.9000 5.5000 5.7000 11,170
No trading
5.6000 5.7000 5.5000 5.6000 13,410
5.5000 5.8000 5.5000 5.6000 8,160
5.9000 6.0000 5.6000 5.8000 15,810
Weekend
Weekend
6.1000 6.5000 6.0000 6.1000 7,030
No trading
6.0000 6.3000 5.9000 6.3000 2,140
5.6000 6.0000 5.6000 6.0000 3,320
5.7000 6.0000 5.7000 5.8000 6,190
Weekend
Weekend
6.1000 6.3000 5.5000 5.7000 17,640
6.4000 6.7000 5.8000 5.9000 10,950
5.8000 5.9000 5.5000 5.5000 21,670
5.8000 6.3000 5.8000 5.9000 5,920
6.4000 6.6000 5.8000 5.8000 32,240
Weekend
Weekend
7.0000 7.4000 6.5000 6.6000 31,410
6.8000 6.8000 5.8000 6.1000 30,290
7.5000 7.8000 6.8000 6.8000 18,130
7.7000 7.8000 7.5000 7.5000 3,040
13 · 8-K After-hours · 16:30 ET FORM 8-K ↗
7.5000 7.8000 7.4000 7.5000 3,250
Weekend
Weekend
7.7000 7.7000 7.5000 7.7000 2,570
7.7000 7.8000 7.5000 7.6000 1,980
7.2000 8.0000 7.2000 7.7000 8,730
7.0000 7.2000 7.0000 7.2000 3,370
7.3000 7.4000 6.7000 7.2000 8,160
Weekend
Weekend
7.4000 7.5000 7.4000 7.4000 4,490
No trading
7.5000 7.5000 7.3000 7.4000 6,120
7.7000 7.8000 6.8000 7.5000 20,020
8.2000 8.2000 7.5000 7.8000 10,100
Weekend
Weekend
12 · 8-K After-hours · 16:05 ET FORM 8-K ↗
8.4000 8.5000 7.9000 8.1000 8,820
8.7000 8.7000 8.2000 8.2000 3,400
8.0000 8.7000 8.0000 8.6000 7,260
8.4000 8.4000 7.9000 8.3000 3,260
11 · 8-K After-hours · 17:05 ET FORM 8-K ↗
8.6000 8.8000 7.9000 8.3000 11,250
Weekend
Weekend
10 · 10-Q After-hours · 16:06 ET 10-Q ↗
8.6000 9.8000 7.8000 8.8000 26,570
8.3000 9.7000 7.5000 8.7000 44,610
8.5000 8.9000 8.3000 8.3000 7,540
9.5000 9.5000 8.5000 8.6000 13,590
9.5000 9.6000 9.1000 9.3000 4,310
Weekend
Weekend
9.2000 9.3000 9.0000 9.3000 11,200
9.3000 9.4000 8.8000 9.0000 3,580
8.5000 9.6000 8.4000 9.2000 16,460
8.8000 9.1000 8.4000 8.6000 14,230
8.9000 8.9000 8.3000 8.5000 3,960
Weekend
Weekend
9.0000 9.2000 8.5000 8.7000 7,000
9.0000 9.4000 8.6000 8.8000 4,710
9.1000 9.2000 9.0000 9.0000 11,080
8.7000 10.2000 8.7000 9.1000 39,930
8.8000 8.9000 8.1000 8.4000 18,440
Weekend
Weekend
9.5000 9.5000 8.6000 8.9000 21,120
8.7000 9.7000 8.5000 9.5000 23,170
8.5000 8.5000 7.7000 8.3000 23,290
9.1000 9.7000 8.3000 8.6000 19,530
8.4000 9.8000 8.4000 9.5000 13,150
Weekend
Weekend
8.1000 9.0000 8.1000 8.5000 19,810
10.2000 10.2000 8.5000 8.7000 20,630
9.1000 10.0000 9.1000 9.7000 24,050
8.6000 10.1000 8.3000 10.0000 19,280
8.8000 9.3000 8.1000 9.2000 20,870
Weekend
Weekend
9.2000 9.2000 8.1000 8.6000 25,440
10.0000 10.0000 9.1000 9.2000 20,260
9.3000 9.9000 8.8000 9.8000 17,100
10.9000 11.1000 8.6000 9.6000 118,950
9.0000 11.2000 8.8000 10.6000 135,440
Weekend
Weekend
8.4000 8.8000 8.2000 8.6000 18,920
8.0000 8.6000 7.9000 8.4000 25,650
7.7000 8.1000 7.7000 7.9000 6,700
9 · 8-K After-hours · 16:05 ET FORM 8-K ↗
8.3000 8.3000 7.5000 7.7000 11,280
8.6000 8.7000 7.8000 8.0000 29,770
Weekend
Weekend
8.0000 8.6000 7.8000 8.1000 46,870
7.7000 7.8000 7.1000 7.3000 15,440
7.2000 7.7000 7.2000 7.6000 19,730
8.0000 8.9000 6.4000 7.2000 95,130
6.6000 9.0000 6.1000 8.4000 268,130
Weekend
Weekend
5.1000 9.5000 5.1000 6.8000 3,619,730
5.1000 5.4000 4.8000 5.0000 39,280
5.0000 5.3000 4.8000 5.1000 18,030
5.2000 5.3000 4.6000 5.0000 55,100
5.6000 5.7000 5.3000 5.3000 16,110
Weekend
Weekend
5.5000 5.6000 5.4000 5.4000 10,390
5.6000 5.8000 5.4000 5.5000 8,760
5.9000 6.0000 5.7000 5.7000 6,830
5.7000 6.0000 5.7000 5.8000 4,330
6.0000 6.0000 5.9000 5.9000 5,360
Weekend
Weekend
6.0000 6.0000 5.8000 5.9000 4,070
6.0000 6.0000 5.8000 5.8000 4,930
5.9000 6.0000 5.8000 6.0000 3,620
6.1000 6.1000 5.8000 6.0000 4,600
No trading
Weekend
Weekend
8 · 8-K After-hours · 16:05 ET FORM 8-K ↗
5.9000 6.0000 5.8000 5.8000 1,660
5.9000 6.0000 5.8000 5.9000 4,020
5.8000 6.0000 5.8000 5.9000 3,590
5.8000 6.1000 5.7000 5.8000 8,860
6.1000 6.1000 5.7000 5.9000 8,160
Weekend
Weekend
7 · 424B4 After-hours · 17:00 ET 424B4 ↗
6.0000 6.2000 5.8000 5.9000 9,100
5.8000 5.8000 5.5000 5.7000 10,180
6 · S-1/A After-hours · 16:30 ET FORM S-1/A ↗
5.5000 5.5000 5.4000 5.4000 3,000
5.5000 5.5000 5.2000 5.5000 4,370
5.7000 5.9000 5.6000 5.6000 3,510
Weekend
Weekend
5 · 8-K After-hours · 16:31 ET FORM 8-K ↗
6.0000 6.0000 5.6000 5.6000 7,940
4 · 10-Q After-hours · 16:06 ET 10-Q ↗
6.2000 6.2000 5.8000 6.1000 7,670
5.5000 5.9000 5.5000 5.9000 6,210
3 · S-1 After-hours · 17:29 ET FORM S-1 ↗
5.7000 5.7000 5.0000 5.3000 11,810
5.5000 5.7000 5.3000 5.4000 8,010
Weekend
Weekend
2 · 8-K After-hours · 16:20 ET FORM 8-K ↗
5.7000 5.7000 5.5000 5.6000 9,860
5.6000 5.9000 5.4000 5.6000 5,890
5.6000 5.8000 5.6000 5.8000 3,060
5.7000 5.7000 5.4000 5.5000 5,990
5.6000 5.7000 5.4000 5.5000 2,920
Weekend
Weekend
5.7000 5.8000 5.4000 5.5000 4,510
6.0000 6.0000 5.7000 5.8000 1,350
6.0000 6.3000 5.7000 5.7000 6,500
6.4000 6.5000 6.0000 6.0000 5,450
1 · 8-K After-hours · 16:19 ET FORM 8-K ↗
6.1000 6.5000 6.1000 6.3000 20,440
Weekend
Weekend

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.

35 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
34 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
33 424B5 424B5 (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
32 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
31 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
30 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 08:30 ET Summarise
29 424B5 424B5 (opens SEC filing in a new tab) Pre-market · 08:25 ET Summarise
28 424B5 424B5 (opens SEC filing in a new tab) After-hours · 16:31 ET Summarise
27 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise
26 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
25 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 09:20 ET Summarise
24 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
23 DEF 14A DEF 14A (opens SEC filing in a new tab) After market open · 11:09 ET Summarise
22 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
21 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
20 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 17:29 ET Summarise
19 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:20 ET Summarise
18 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 17:00 ET Summarise
17 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 17:15 ET Summarise
16 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
15 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 17:11 ET Summarise
14 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
13 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
12 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
11 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 17:05 ET Summarise
10 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
9 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
8 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
7 424B4 424B4 (opens SEC filing in a new tab) After-hours · 17:00 ET Summarise
6 S-1/A FORM S-1/A (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
5 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:31 ET Summarise
4 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
3 S-1 FORM S-1 (opens SEC filing in a new tab) After-hours · 17:29 ET Summarise
2 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:20 ET Summarise
1 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise