---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-068614"
form_type: "8-K"
ticker: "CLIR"
cik: "0001434524"
company_name: "ClearSign Technologies Corp"
filed_at: "2026-06-01T12:30:28+00:00"
generated_at: "2026-06-01T12:35:33.813481+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# ClearSign Technologies prices 777,780-share public offering at $4.33/share for ~$3.37M gross proceeds

## Summary
- 777,780 shares priced at $4.33/share; gross proceeds $3.37M (up to $3.87M with 30-day over-allotment option).
- Net proceeds estimated at $2.94M after underwriting discounts and estimated offering expenses.
- Offering expected to close June 1, 2026; Newbridge Securities is sole book-running manager.
- Proceeds to be used for working capital, R&D, marketing, sales, and general corporate purposes.
- Officers and directors enter 90-day lock-up; underwriter has option for additional 116,667 shares.

## SEC filing metadata
- accession: 0001104659-26-068614
- form_type: 8-K
- ticker: CLIR
- cik: 0001434524
- company_name: ClearSign Technologies Corp
- filed_at: 2026-06-01T12:30:28+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1434524/000110465926068614/0001104659-26-068614-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1434524/000110465926068614/tm2615953d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-068614
- JSON: https://secwatch.observer/filing/0001104659-26-068614.json
- Plain text: https://secwatch.observer/filing/0001104659-26-068614.txt

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