---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-080744"
form_type: "8-K"
ticker: "CLIR"
cik: "0001434524"
company_name: "ClearSign Technologies Corp"
filed_at: "2026-07-06T20:06:25+00:00"
generated_at: "2026-07-06T20:07:06.089252+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# ClearSign Technologies recommences ATM offering for up to $6.875M in common stock

## Summary
- On July 6, 2026, ClearSign filed a prospectus supplement to recommence its ATM offering under the Sales Agreement with H.C. Wainwright.
- The company may offer and sell up to $6,875,000 in shares of common stock.
- The offering is made under the existing S-3 registration statement (File No. 333-288736) effective July 28, 2025.
- A legal opinion from Mitchell Silberberg & Knupp LLP is filed as Exhibit 5.1.

## SEC filing metadata
- accession: 0001104659-26-080744
- form_type: 8-K
- ticker: CLIR
- cik: 0001434524
- company_name: ClearSign Technologies Corp
- filed_at: 2026-07-06T20:06:25+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1434524/000110465926080744/0001104659-26-080744-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1434524/000110465926080744/tm2619440d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-080744
- JSON: https://secwatch.observer/filing/0001104659-26-080744.json
- Plain text: https://secwatch.observer/filing/0001104659-26-080744.txt

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