---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-086099"
form_type: "8-K"
ticker: "CLIR"
cik: "0001434524"
company_name: "ClearSign Technologies Corp"
filed_at: "2026-07-23T12:45:31+00:00"
generated_at: "2026-07-23T12:50:10.597731+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# ClearSign raises $1.77M via private placement of 500k shares at $3.54/share

## Summary
- Sold 500,000 shares to existing stockholder Otter Capital LLC at $3.54/share for gross proceeds of $1,770,000.
- Placement closed July 22, 2026; net proceeds for working capital, R&D, marketing, and general corporate purposes.
- Waiver obtained from Newbridge Securities to allow the private sale, effective through July 31, 2026 or consummation.
- Shares issued as restricted securities under Rule 144, no registration rights.

## SEC filing metadata
- accession: 0001104659-26-086099
- form_type: 8-K
- ticker: CLIR
- cik: 0001434524
- company_name: ClearSign Technologies Corp
- filed_at: 2026-07-23T12:45:31+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 3.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1434524/000110465926086099/0001104659-26-086099-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1434524/000110465926086099/tm2621046d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-086099
- JSON: https://secwatch.observer/filing/0001104659-26-086099.json
- Plain text: https://secwatch.observer/filing/0001104659-26-086099.txt

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