---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-21-097966"
form_type: "8-K"
ticker: "CLIR"
cik: "0001434524"
company_name: "ClearSign Technologies Corp"
filed_at: "2021-07-30T23:59:59+00:00"
generated_at: "2026-06-30T00:19:20.472081+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# ClearSign CFO Brian Fike passes away; CEO Jim Deller appointed interim CFO

## Summary
- CFO Brian Fike passed away; ClearSign announced on July 30, 2021.
- CEO Colin James Deller, 53, appointed Interim CFO, Treasurer, and Secretary effective July 29, 2021.
- Deller will serve in interim roles without additional compensation while a permanent CFO is sought.
- ClearSign says succession planning is underway and current management team continues to lead.

## SEC filing metadata
- accession: 0001104659-21-097966
- form_type: 8-K
- ticker: CLIR
- cik: 0001434524
- company_name: ClearSign Technologies Corp
- filed_at: 2021-07-30T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1434524/000110465921097966/0001104659-21-097966-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1434524/000110465921097966/tm2123701d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-21-097966
- JSON: https://secwatch.observer/filing/0001104659-21-097966.json
- Plain text: https://secwatch.observer/filing/0001104659-21-097966.txt

## Key facts
- Executive change
  Brian G. Fike departed as Chief Financial Officer, Treasurer, and Secretary at ClearSign Technologies Corp.
  - Action: passed away
  - Role: Chief Financial Officer, Treasurer, and Secretary
  source text: On July 30, 2021, ClearSign Technologies Corporation (the “Company,” “we,” “us” or “our”) announced that Brian G. Fike, the Company’s Chief Financial Officer, Treasurer, and Secretary, dear friend and colleague, passed away.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1434524/000110465921097966/0001104659-21-097966-index.htm
- Executive change
  Colin James Deller was appointed as Interim Chief Financial Officer at ClearSign Technologies Corp.
  - Action: appointed
  - Role: Interim Chief Financial Officer
  source text: On July 29, 2021, the board of directors of the Company appointed Colin James Deller, 53, the Company’s Chief Executive Officer and a director, as the Interim Chief Financial Officer (and principal financial and accounting officer), Interim Treasurer, and Interim Secretary of the Company while it pursues the process of retaining a permanent candidate(s) to fill the positions.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1434524/000110465921097966/0001104659-21-097966-index.htm

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