---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-025302"
form_type: "8-K"
ticker: "CLIR"
cik: "0001434524"
company_name: "ClearSign Technologies Corp"
filed_at: "2023-02-24T23:59:59+00:00"
generated_at: "2026-06-19T00:38:44.796371+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# ClearSign board: Susanne Meline resigns, Catharine de Lacy appointed as director, effective Feb 21, 2023

## Summary
- Susanne Meline resigned from board effective Feb 21, 2023; she was Lead Independent Director and committee chair.
- Catharine de Lacy appointed to fill vacancy, will chair Nominating Committee and serve on Audit Committee.
- Judith Schrecker appointed as new Lead Independent Director.
- De Lacy brings ESG expertise; compensation includes quarterly RSU grants.
- Meline's resignation not due to disagreement with company.

## SEC filing metadata
- accession: 0001104659-23-025302
- form_type: 8-K
- ticker: CLIR
- cik: 0001434524
- company_name: ClearSign Technologies Corp
- filed_at: 2023-02-24T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1434524/000110465923025302/0001104659-23-025302-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1434524/000110465923025302/tm237744d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-025302
- JSON: https://secwatch.observer/filing/0001104659-23-025302.json
- Plain text: https://secwatch.observer/filing/0001104659-23-025302.txt

## Key facts
- Executive change
  Judith Schrecker was appointed as Lead Independent Director at ClearSign Technologies Corp.
  - Action: appointed
  - Role: Lead Independent Director
  source text: On February 18, 2023, the Board, upon Ms. Meline’s resignation, appointed Judith Schrecker to be the Board’s new Lead Independent Director.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1434524/000110465923025302/0001104659-23-025302-index.htm
- Executive change
  Susanne Meline resigned as Lead Independent Director at ClearSign Technologies Corp.
  - Action: resigned
  - Role: Lead Independent Director
  source text: On February 18, 2023, Susanne Meline notified the Board of Directors (the “Board”) of ClearSign Technologies Corporation (the “Company”) that she will resign from the Board, effective immediately prior to the appointment of Catharine de Lacy as a member of the Board, which occurred on February 21, 2023 (the “Effective Date”), as more fully described below.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1434524/000110465923025302/0001104659-23-025302-index.htm
- Executive change
  Catharine de Lacy was appointed as Director at ClearSign Technologies Corp.
  - Action: appointed
  - Role: Director
  source text: the Board, upon recommendation of the Nominating Committee, appointed Catharine de Lacy as a new director to fill the vacancy created by Ms. Meline’s resignation, effective as of the Effective Date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1434524/000110465923025302/0001104659-23-025302-index.htm

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