secwatch.observer — SEC 8-K summary
======================================

Issuer:     ClearSign Technologies Corp (CLIR)
CIK:        0001434524
Form:       8-K
Filed at:   2023-04-07T23:59:59+00:00
Accession:  0001104659-23-043159
Event type: other_material
Sentiment:  positive
Materiality: 0.60
Item codes: 2.02, 7.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

ClearSign updates 2022 ops: 20-burner California project test passed, hydrogen burner tests, new market sales
--------------------------------------------------------------------------------

- Final witness testing completed for 20-burner refinery project; data sent to air district; manufacturing due later in 2023.
- Phase 1 testing of ultra-low NOx 100% hydrogen burner successful; seeking up to $1.6M Phase 2 grant.
- Entered Texas Gulf Coast with first boiler burner sale to a global chemical company; installation scheduled Q3 2023.
- Two boiler burner sales in California: one to medical/waste services (Q2 install), one to recycling services with California Boiler (Q3 install).
- Cash & short-term investments $9.1M as of Dec 31, 2022; 38.0M shares outstanding.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1434524/000110465923043159/0001104659-23-043159-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1434524/000110465923043159/tm2312141d1_8k.htm
  HTML page:      https://secwatch.observer/filing/0001104659-23-043159

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer