66 results
8-K
EX-99.1
CLIR
ClearSign Technologies Corp
25 Apr 24
ClearSign Technologies Corporation Provides Full Year 2023 Update
5:16pm
performance has been assessed as part of the South Coast Air Quality Management District of California (SCAQMD) periodic public participation process
424B5
CLIR
ClearSign Technologies Corp
23 Apr 24
Prospectus supplement for primary offering
6:02am
with broad political input. Due to the localized effects of poor air quality, we expect these standards to continue to become more stringent … criteria air pollutants, including ground-level ozone. These regulations are enforced by state and local air quality districts as part of their compliance
424B5
CLIR
ClearSign Technologies Corp
19 Apr 24
Prospectus supplement for primary offering
6:02am
input. Due to the localized effects of poor air quality, we expect these standards to continue to become more stringent regardless of political … , including ground-level ozone. These regulations are enforced by state and local air quality districts as part of their compliance plans. As a precursor
424B5
CLIR
ClearSign Technologies Corp
18 Mar 24
Prospectus supplement for primary offering
6:05am
to our target markets have been developed over the past 50 years with broad political input. Due to the localized effects of poor air quality, we expect … and local air quality districts as part of their compliance plans. As a precursor to ground-level ozone, NOx is a pollutant that is regulated by local
8-K
EX-99.2
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1 Sep 23
ClearSign Technologies Corporation Provides Second Quarter 2023 Update
4:31pm
8-K
EX-99.2
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24 May 23
ClearSign Technologies Corporation Provides First Quarter 2023 Update
6:08am
8-K
EX-99.2
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7 Apr 23
ClearSign Technologies Corporation Provides Full Year 2022 Update
4:20pm
8-K
EX-99.2
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7 Jun 22
ClearSign Technologies Corporation Provides First Quarter 2022 Update
5:20pm
424B5
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31 May 22
Prospectus supplement for primary offering
4:43pm
424B5
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26 May 22
Prospectus supplement for primary offering
4:22pm
8-K
EX-99.2
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8 Apr 22
ClearSign Technologies Corporation Provides Full Year 2021 Update
9:20am
8-K
EX-99.2
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29 Nov 21
ClearSign Technologies Corporation Provides Third Quarter 2021 Update
4:31pm
8-K
EX-99.2
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10 Sep 21
ClearSign Technologies Corporation Provides Second Quarter 2021 Update
5:28pm
8-K
EX-99.2
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25 Mar 21
ClearSign Technologies Corporation Provides Fourth Quarter and Full Year 2020 Update
12:00am
424B5
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23 Dec 20
Prospectus supplement for primary offering
5:11pm