---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-036465"
form_type: "8-K"
ticker: "HYLN"
cik: "0001759631"
company_name: "Hyliion Holdings Corp."
filed_at: "2026-05-19T20:18:49+00:00"
generated_at: "2026-05-19T20:21:03.121199+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Hyliion stockholders elect three Class III directors, ratify auditor, approve say on pay and equity plan amendment

## Summary
- Elected Rodger Boehm, Mary Gustanski, and Robert Knight Jr. as Class III directors; 48,012,672 broker non-votes.
- Ratified Grant Thornton LLP as auditor for FY2026: 128,399,016 for, 794,022 against, 306,551 abstain.
- Approved say-on-pay: 76,638,179 for, 4,601,903 against, 246,835 abstain, 48,012,672 broker non-votes.
- Approved amendment to 2024 Equity Incentive Plan: 72,466,721 for, 8,607,662 against, 412,534 abstain, 48,012,672 broker non-votes.

## SEC filing metadata
- accession: 0001628280-26-036465
- form_type: 8-K
- ticker: HYLN
- cik: 0001759631
- company_name: Hyliion Holdings Corp.
- filed_at: 2026-05-19T20:18:49+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.07
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1759631/000162828026036465/0001628280-26-036465-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1759631/000162828026036465/hyln-20260519.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-036465
- JSON: https://secwatch.observer/filing/0001628280-26-036465.json
- Plain text: https://secwatch.observer/filing/0001628280-26-036465.txt

## Key facts
- Shareholder Votes
  Hyliion Holdings Corp. shareholders approved Election of three Class III directors at the 2026-05-19 meeting.
  - Proposal: director election
  - Outcome: passed
  - Meeting: 2026-05-19
  source text: • Stockholders elected the three nominees recommended by the Company’s board of directors to serve as Class III directors of the Company until the 2029 Annual Meeting of Stockholders or until their respective successors are elected and qualified;
  evidence_url: https://www.sec.gov/Archives/edgar/data/1759631/000162828026036465/0001628280-26-036465-index.htm
- Shareholder Votes
  Hyliion Holdings Corp. shareholders approved Ratification of Grant Thornton LLP as auditor for fiscal year 2026 at the 2026-05-19 meeting.
  - Proposal: auditor ratification
  - Outcome: passed
  - Meeting: 2026-05-19
  source text: • Stockholders ratified the selection of Grant Thornton LLP (the “Auditor”) to serve as the independent registered public accounting firm of the Company for the 2026 fiscal year ended December 31, 2026;
  evidence_url: https://www.sec.gov/Archives/edgar/data/1759631/000162828026036465/0001628280-26-036465-index.htm
- Shareholder Votes
  Hyliion Holdings Corp. shareholders approved Advisory vote on executive compensation at the 2026-05-19 meeting.
  - Proposal: say on pay
  - Outcome: passed
  - Meeting: 2026-05-19
  source text: • Stockholders approved, on an advisory basis, the compensation of the Company’s named executive officers (“Say on Pay”);
  evidence_url: https://www.sec.gov/Archives/edgar/data/1759631/000162828026036465/0001628280-26-036465-index.htm
- Shareholder Votes
  Hyliion Holdings Corp. shareholders approved Amendment to the Hyliion Holdings Corp. 2024 Equity Incentive Plan at the 2026-05-19 meeting.
  - Proposal: equity plan
  - Outcome: passed
  - Meeting: 2026-05-19
  source text: • Stockholders approved an amendment to the Hyliion Holdings Corp. 2024 Equity Incentive Plan.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1759631/000162828026036465/0001628280-26-036465-index.htm

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