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AI brief of an SEC Form 8-K · Aon (AON)

Aon names David DeBrunner chief accounting officer, effective September 15, 2025

Neutral Impact 2 of 5 leadership Written later

Aon plc said David DeBrunner, currently Vice President, Controller and Chief Accounting Officer at Ally Financial, will become Senior Vice President, Global Controller and Chief Accounting Officer on September 15, 2025, reporting to CFO Edmund Reese. He will succeed Michael Neller, who moves to a new role as Deputy Global Chief People Officer. The filing describes a routine finance leadership change with no reported financial results.

Key points

  • Effective date is September 15, 2025; DeBrunner becomes principal accounting officer on that date
  • Base salary of $500,000 per year, with a target annual incentive of 100% of salary beginning in 2026
  • Cash sign-on bonus of up to $2.1 million, paid in installments; unpaid installments are forfeited and paid installments subject to clawback if he leaves or is terminated for cause within two years
  • Succeeds Michael Neller, Chief Accounting Officer and Global Controller since February 21, 2018

The filing

CompanyAon (AON)
Form8-K, current report
Filed with the SECJul 29, 2025, 4:34 PM ET
Accession number0001193125-25-168037

Items reported: 5.02 Director / Officer Change

Read the filing on SEC.gov ↗

Written by AI on Nov 8, 2026, 1:42 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on July 29, 2025.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.