---
schema_version: "secwatch.filing_event.v1"
accession: "0000746838-21-000069"
form_type: "8-K"
ticker: "UIS"
cik: "0000746838"
company_name: "UNISYS CORP"
filed_at: "2021-07-23T23:59:59+00:00"
generated_at: "2026-06-30T03:05:34.659946+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Unisys board member Lisa A. Hook resigns effective July 31, 2021

## Summary
- Lisa A. Hook announced resignation from the board effective July 31, 2021.
- Resignation is not due to any disagreement with Unisys regarding operations, policies, or practices.
- No replacement for Hook's board seat has been announced as of the filing date.

## SEC filing metadata
- accession: 0000746838-21-000069
- form_type: 8-K
- ticker: UIS
- cik: 0000746838
- company_name: UNISYS CORP
- filed_at: 2021-07-23T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/746838/000074683821000069/0000746838-21-000069-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/746838/000074683821000069/uis-20210723.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000746838-21-000069
- JSON: https://secwatch.observer/filing/0000746838-21-000069.json
- Plain text: https://secwatch.observer/filing/0000746838-21-000069.txt

## Key facts
- Executive change
  Lisa A. Hook resigned as Director at UNISYS CORP.
  - Action: resigned
  - Role: Director
  source text: On July 23, 2021 , Lisa A. Hook, a member of the Board of Directors (the “Board”) of Unisys Corporation (the “Company”), announced her resignation from the Board effective July 31, 2021.
  evidence_url: https://www.sec.gov/Archives/edgar/data/746838/000074683821000069/0000746838-21-000069-index.htm

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