---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-24-059982"
form_type: "8-K"
ticker: "CLIR"
cik: "0001434524"
company_name: "ClearSign Technologies Corp"
filed_at: "2024-05-10T23:59:59+00:00"
generated_at: "2026-06-02T03:32:14.742263+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# ClearSign underwriter exercises over-allotment in full for ~$638K gross proceeds

## Summary
- Over-allotment exercised: 693,114 shares of common stock and warrants to purchase up to 693,114 shares at $0.92 per set.
- Gross proceeds of approximately $637,665 before underwriting discounts, commissions, and other expenses.
- Underwriter receives warrants to purchase 55,449 shares of common stock (8% of over-allotment shares sold).
- Closing of the over-allotment securities expected on or about May 15, 2024, subject to conditions.

## SEC filing metadata
- accession: 0001104659-24-059982
- form_type: 8-K
- ticker: CLIR
- cik: 0001434524
- company_name: ClearSign Technologies Corp
- filed_at: 2024-05-10T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 3.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1434524/000110465924059982/0001104659-24-059982-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1434524/000110465924059982/tm2414178d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-24-059982
- JSON: https://secwatch.observer/filing/0001104659-24-059982.json
- Plain text: https://secwatch.observer/filing/0001104659-24-059982.txt

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