---
schema_version: "secwatch.filing_event.v1"
accession: "0001759631-24-000016"
form_type: "8-K"
ticker: "HYLN"
cik: "0001759631"
company_name: "Hyliion Holdings Corp."
filed_at: "2024-02-13T23:59:59+00:00"
generated_at: "2026-06-06T03:32:49.414181+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Hyliion directors Card and Pang resign; COO Gallagher to depart Feb 29, 2024

## Summary
- Andrew Card Jr. resigns from board to join George & Barbara Bush Foundation; Stephen Pang resigns for personal reasons.
- Board size reduced from ten to eight members effective February 13, 2024.
- COO Dennis Gallagher departs February 29, 2024, due to Hyliion's transition away from the powertrain business.
- Gallagher's departure qualifies as a 'Qualifying Termination' under the Hyliion Executive Severance Plan, triggering severance benefits.
- No departures resulted from any disagreement with the Company's operations, policies, or practices.

## SEC filing metadata
- accession: 0001759631-24-000016
- form_type: 8-K
- ticker: HYLN
- cik: 0001759631
- company_name: Hyliion Holdings Corp.
- filed_at: 2024-02-13T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1759631/000175963124000016/0001759631-24-000016-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1759631/000175963124000016/hyln-20240213.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001759631-24-000016
- JSON: https://secwatch.observer/filing/0001759631-24-000016.json
- Plain text: https://secwatch.observer/filing/0001759631-24-000016.txt

## Key facts
- Executive change
  Stephen Pang resigned as Director at Hyliion Holdings Corp..
  - Action: resigned
  - Role: Director
  source text: Effective February 13, 2024, Mr. Andrew Card, Jr. and Mr. Stephen Pang have resigned from the Board of Directors of Hyliion Holdings Corp.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1759631/000175963124000016/0001759631-24-000016-index.htm
- Executive change
  Dennis Gallagher departed as Chief Operating Officer at Hyliion Holdings Corp..
  - Action: departed
  - Role: Chief Operating Officer
  source text: Mr. Dennis Gallagher will depart from his role as Chief Operating Officer, effective February 29, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1759631/000175963124000016/0001759631-24-000016-index.htm
- Executive change
  Andrew Card, Jr. resigned as Director at Hyliion Holdings Corp..
  - Action: resigned
  - Role: Director
  source text: Effective February 13, 2024, Mr. Andrew Card, Jr. and Mr. Stephen Pang have resigned from the Board of Directors of Hyliion Holdings Corp.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1759631/000175963124000016/0001759631-24-000016-index.htm

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