---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-119321"
form_type: "8-K"
ticker: "CLIR"
cik: "0001434524"
company_name: "ClearSign Technologies Corp"
filed_at: "2025-12-08T23:59:59+00:00"
generated_at: "2026-05-16T13:56:43.753652+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "low"
source: SEC EDGAR
---

# ClearSign Technologies posts new investor presentation on website for upcoming meetings

## Summary
- Investor presentation posted to Company website on December 8, 2025.
- Presentation intended for use in upcoming investor meetings and conferences.
- No financial results or material changes disclosed in the filing.

## SEC filing metadata
- accession: 0001104659-25-119321
- form_type: 8-K
- ticker: CLIR
- cik: 0001434524
- company_name: ClearSign Technologies Corp
- filed_at: 2025-12-08T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: low
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1434524/000110465925119321/0001104659-25-119321-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1434524/000110465925119321/tm2532891d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-119321
- JSON: https://secwatch.observer/filing/0001104659-25-119321.json
- Plain text: https://secwatch.observer/filing/0001104659-25-119321.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.