---
schema_version: "secwatch.filing_event.v1"
accession: "0001593275-26-000022"
form_type: "8-K"
ticker: "HG"
cik: "0001593275"
company_name: "Hamilton Insurance Group, Ltd."
filed_at: "2026-02-25T23:59:59+00:00"
generated_at: "2026-05-16T00:18:33.316953+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Hamilton Insurance appoints Marc Roston to Board, replacing Hawes Bostic effective Feb 20

## Summary
- Marc Roston appointed to Board by Magnitude Capital, replacing Hawes Bostic effective February 20, 2026.
- Roston brings over 30 years investment experience; currently Senior Research Scholar at Stanford and Operating Partner at DFW Capital Partners.
- Bostic's departure not related to any disagreement with Hamilton on operations, policies, or practices.
- Roston will serve on Board's Investments and Technology Committees; will not receive compensation from Hamilton.

## SEC filing metadata
- accession: 0001593275-26-000022
- form_type: 8-K
- ticker: HG
- cik: 0001593275
- company_name: Hamilton Insurance Group, Ltd.
- filed_at: 2026-02-25T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1593275/000159327526000022/0001593275-26-000022-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1593275/000159327526000022/hg-20260220.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001593275-26-000022
- JSON: https://secwatch.observer/filing/0001593275-26-000022.json
- Plain text: https://secwatch.observer/filing/0001593275-26-000022.txt

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