---
schema_version: "secwatch.filing_event.v1"
accession: "0000776867-23-000003"
form_type: "8-K"
ticker: "WTM"
cik: "0000776867"
company_name: "WHITE MOUNTAINS INSURANCE GROUP LTD"
filed_at: "2023-02-23T23:59:59+00:00"
generated_at: "2026-06-19T03:37:23.390104+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# White Mountains elects former Alleghany CEO Weston M. Hicks to board

## Summary
- Weston M. Hicks elected to White Mountains board effective Feb 22, 2023; board expands from 8 to 9 members.
- Hicks was formerly President and CEO of Alleghany Corporation and served on its board.
- He will serve until the next annual meeting and receive standard non-employee director compensation.
- CEO Manning Rountree commented that Hicks' insurance industry experience will benefit owners.

## SEC filing metadata
- accession: 0000776867-23-000003
- form_type: 8-K
- ticker: WTM
- cik: 0000776867
- company_name: WHITE MOUNTAINS INSURANCE GROUP LTD
- filed_at: 2023-02-23T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/776867/000077686723000003/0000776867-23-000003-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/776867/000077686723000003/wtm-20230222.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000776867-23-000003
- JSON: https://secwatch.observer/filing/0000776867-23-000003.json
- Plain text: https://secwatch.observer/filing/0000776867-23-000003.txt

## Key facts
- Executive change
  Weston M. Hicks was elected as director at WHITE MOUNTAINS INSURANCE GROUP LTD.
  - Action: elected
  - Role: director
  source text: On February 22, 2023, the Board of Directors (the “Board”) of White Mountains Insurance Group, Ltd. (the “Company”) elected Weston M. Hicks as a new director, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/776867/000077686723000003/0000776867-23-000003-index.htm

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