01—Abstract
Summary
Summary of the 8-K filed July 29, 2025. Cited figures are marked; the original filing is the authoritative source.
Aon plc (AON) has announced a significant leadership change within its financial reporting structure, with David DeBrunner appointed as Senior Vice President, Global Controller and Chief Accounting Officer, effective September 15, 2025.
This appointment signifies a transition in accounting leadership, with Mr. DeBrunner succeeding Michael Neller, who will move to a new role focused on human resources. Mr. DeBrunner brings substantial experience from his tenure at Ally Financial Inc., where he served as Vice President, Controller and Chief Accounting Officer since 2007. Investors can expect Mr. DeBrunner's expertise to be crucial in maintaining Aon's financial integrity and compliance.
His compensation package includes a base salary of $500,000,a a target annual incentive of 100% of base salary from 2026, and eligibility for long-term incentive programs. Notably, a cash sign-on bonus of up to $2.1 million will be paid in installments, with provisions for forfeiture and clawback under specific termination conditions, underscoring the company's commitment to retention and accountability.
02—Key points
Key Highlights
- David DeBrunner appointed as Senior Vice President, Global Controller and Chief Accounting Officer, effective September 15, 2025.
- Mr. DeBrunner will serve as the Company's principal accounting officer.
- He brings extensive experience from Ally Financial Inc., where he held the role of Vice President, Controller and Chief Accounting Officer for over 17 years.
- Mr. DeBrunner will succeed Michael Neller, who is transitioning to a new role as Deputy Global Chief People Officer.
- The new Chief Accounting Officer will receive an initial base salary of $500,000 per year.
- A sign-on bonus of up to $2.1 million is structured with clawback provisions within the first two years of employment.
- Mr. DeBrunner will be eligible for a target annual incentive award of 100% of his base salary starting in 2026.
03—Questions
Frequently Asked Questions
Who is David DeBrunner and what is his new role at Aon?
David DeBrunner is the incoming Senior Vice President, Global Controller and Chief Accounting Officer of Aon plc, effective September 15, 2025. He will be responsible for the company's accounting functions and will serve as the principal accounting officer.
What is David DeBrunner's prior experience?
Mr. DeBrunner has a strong background in financial leadership. Most recently, he served as Vice President, Controller and Chief Accounting Officer at Ally Financial Inc. since September 2007. Prior to that, he was Senior Vice President and Corporate Controller at Fifth Third Bancorp.
What are the key components of David DeBrunner's compensation package?
Mr. DeBrunner's compensation includes an initial base salary of $500,000 per year. He is also eligible for a target annual incentive award of 100% of his base salary beginning in 2026, participation in long-term incentive programs, and a cash sign-on bonus of up to $2.1 million, paid in installments over the first year of employment.
Are there any specific conditions attached to the sign-on bonus?
Yes, the sign-on bonus of up to $2.1 million is subject to forfeiture and clawback provisions. If Mr. DeBrunner voluntarily terminates his employment or if the Company terminates his employment for cause within the first two years, all unpaid installments will be forfeited, and paid installments will be subject to clawback by the Company.
Who is Mr. DeBrunner replacing, and where is that person going?
Mr. DeBrunner is succeeding Michael Neller as Chief Accounting Officer and Global Controller. Mr. Neller will transition into a new role within Aon as Deputy Global Chief People Officer and Head of Total Rewards and Talent Development.
04—Continue