---
schema_version: "secwatch.filing_event.v1"
accession: "0000731766-25-000239"
form_type: "8-K"
ticker: "UNH"
cik: "0000731766"
company_name: "UNITEDHEALTH GROUP INC"
filed_at: "2025-08-20T23:59:59+00:00"
generated_at: "2026-05-17T11:17:58.437283+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# UnitedHealth Group appoints new lead independent director, creates Public Responsibility Committee

## Summary
- F. William McNabb appointed lead independent director, replacing Michele Hooper; McNabb served as chairman and CEO of Vanguard Group.
- New Public Responsibility Committee formed to oversee financial, regulatory, and reputational risks; chaired by Michele Hooper.
- Committee leadership refreshed: Timothy Flynn (Audit), Paul Garcia (Compensation), Charles Baker (Governance), Valerie Montgomery Rice (Health/Clinical).
- Four other committees' membership updated; details in committee charters available on company website.

## SEC filing metadata
- accession: 0000731766-25-000239
- form_type: 8-K
- ticker: UNH
- cik: 0000731766
- company_name: UNITEDHEALTH GROUP INC
- filed_at: 2025-08-20T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 7.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/731766/000073176625000239/0000731766-25-000239-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/731766/000073176625000239/unh-20250820.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000731766-25-000239
- JSON: https://secwatch.observer/filing/0000731766-25-000239.json
- Plain text: https://secwatch.observer/filing/0000731766-25-000239.txt

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