ClearSign Technologies - 13 Year Stock Price History | CLIR

Historical daily share price chart and data for ClearSign Technologies since 2012 adjusted for splits and dividends. The latest closing stock price for ClearSign Technologies as of November 07, 2025 is 0.93.
  • The all-time high ClearSign Technologies stock closing price was 11.75 on January 15, 2014.
  • The ClearSign Technologies 52-week high stock price is 1.72, which is 84.9% above the current share price.
  • The ClearSign Technologies 52-week low stock price is 0.46, which is 50.5% below the current share price.
  • The average ClearSign Technologies stock price for the last 52 weeks is 0.80.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.
ClearSign Technologies Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2025 0.7478 1.3900 1.5100 0.5000 0.9300 -35.42%
2024 0.9167 1.0700 1.5100 0.6451 1.4400 29.73%
2023 1.0344 0.5300 1.6300 0.5300 1.1100 107.09%
2022 1.0853 1.4400 1.7400 0.5360 0.5360 -61.16%
2021 3.5144 2.8800 5.7950 1.2400 1.3800 -52.90%
2020 1.6749 0.8318 3.3500 0.3917 2.9300 284.26%
2019 1.0582 1.0000 1.4600 0.7282 0.7625 -25.25%
2018 1.9326 3.5000 3.5000 0.8829 1.0200 -71.67%
2017 3.4681 3.4000 4.5500 2.0750 3.6000 5.88%
2016 4.4275 4.9000 6.0900 2.9800 3.4000 -29.90%
2015 5.4764 7.2400 7.6200 3.4400 4.8500 -33.83%
2014 8.4510 10.5800 11.7500 5.2700 7.3300 -35.98%
2013 7.4502 5.0000 11.4500 4.2900 11.4500 136.57%
Sector Industry Market Cap Revenue
Industrial Products Industrial Services $0.049B $0.004B
ClearSign Technologies Corporation provides industrial combustion and sensing technologies for industrial and commercial systems. The company's OEM products consists ClearSign Core(TM) and ClearSign Eye(TM) and other sensing configurations. It serves energy, commercial/industrial boiler, chemical, petrochemical, transport and power industries. ClearSign Technologies Corporation, formerly known as ClearSign Combustion Corporation, is based in Seattle, United States.
Stock Name Country Market Cap PE Ratio
Siemens AG (SIEGY) Germany $223.248B 25.93
Bouygues (BOUYF) France $80.093B 13.46
Fastenal (FAST) United States $46.897B 38.18
W.W Grainger (GWW) United States $45.411B 24.03
Ashtead Group (ASHTY) United Kingdom $26.183B 16.97
Kion Group (KIGRY) Germany $9.383B 30.83
Andritz (ADRZY) Austria $7.927B 14.80
SiteOne Landscape Supply (SITE) United States $5.472B 39.89
MSC Industrial Direct (MSM) United States $4.911B 23.47
Eos Energy Enterprises (EOSE) United States $4.745B 0.00
Horiba (HRIBF) Japan $3.860B 15.44
Hillenbrand Inc (HI) United States $2.233B 11.82
LegalZoom (LZ) United States $1.790B 112.22
Global Industrial (GIC) United States $1.051B 15.59
ScanSource (SCSC) United States $0.896B 10.71
Hudson Technologies (HDSN) United States $0.299B 13.70
DMC Global (BOOM) United States $0.124B 25.17
Lianhe Sowell Group (LHSW) China $0.095B 0.00
Velo3D (VELO) United States $0.066B 0.00
Presidio Property Trust (SQFT) United States $0.007B 0.00
JE Cleantech Holdings (JCSE) Singapore $0.006B 0.00
Fusion Fuel Green (HTOO) Ireland $0.003B 0.00