---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-055237"
form_type: "8-K"
ticker: "AON"
cik: "0000315293"
company_name: "Aon plc"
filed_at: "2025-03-17T23:59:59+00:00"
generated_at: "2026-05-24T16:58:10.923593+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Aon President Eric Andersen transitions to Senior Advisor; CEO Greg Case assumes President role

## Summary
- Eric Andersen steps down as President, becomes Senior Advisor to CEO through June 2026.
- CEO Greg Case adds title of President; no changes to Case's compensation.
- Andersen had been with Aon since 1997, key in Aon United strategy and 3x3 Plan execution.
- Transition effective March 14, 2025; amendment to Case's employment agreement filed.
- No financial impact or guidance changes reported.

## SEC filing metadata
- accession: 0001193125-25-055237
- form_type: 8-K
- ticker: AON
- cik: 0000315293
- company_name: Aon plc
- filed_at: 2025-03-17T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/315293/000119312525055237/0001193125-25-055237-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/315293/000119312525055237/d903628d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-055237
- JSON: https://secwatch.observer/filing/0001193125-25-055237.json
- Plain text: https://secwatch.observer/filing/0001193125-25-055237.txt

## Key facts
- Executive change
  Gregory C. Case changed role as President at Aon plc.
  - Action: assumed
  - Role: President
  source text: Gregory C. Case, the Company’s Chief Executive Officer, assumed the additional title of President of the Company and Aon Corporation.
  evidence_url: https://www.sec.gov/Archives/edgar/data/315293/000119312525055237/0001193125-25-055237-index.htm
- Executive change
  Eric Andersen changed role as Senior Advisor at Aon plc.
  - Action: transitioned
  - Role: Senior Advisor
  source text: On March 14, 2025 (the “Transition Date”), Eric Andersen transitioned to a new role as Senior Advisor and ceased to serve as President of Aon plc (the “Company”) and Aon Corporation
  evidence_url: https://www.sec.gov/Archives/edgar/data/315293/000119312525055237/0001193125-25-055237-index.htm

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