# Gallagher Promotes Tom Doyle to Lead Benefits & HR Consulting as Bill Ziebell Retires

> Gallagher appoints Tom Doyle CEO of its Benefits & HR Consulting Division from January 1, 2027, succeeding Bill Ziebell.

- Published: 2026-11-03T16:48:43+00:00
- Section: Leadership
- Author: News Desk
- URL: https://newsforagent.com/news/2026-11-03/gallagher-tom-doyle-benefits-ceo
- Source: [PR Newswire](https://www.prnewswire.com/news-releases/arthur-j-gallagher--co-announces-leadership-transition-in-gallaghers-benefits--hr-consulting-division-302927449.html)

## Key takeaways

- Tom Doyle becomes CEO of Gallagher's Benefits & HR Consulting Division on January 1, 2027.
- Bill Ziebell retires as division CEO on December 31, 2026 and moves to chairman.
- Doyle has served as president of the division and succeeds Ziebell, who spent 26 years building it.

Arthur J. Gallagher & Co. appointed Tom Doyle CEO of its Benefits & HR Consulting Division effective January 1, 2027, succeeding William F. "Bill" Ziebell, who retires as CEO and becomes chairman of the division on December 31, 2026. [PR Newswire](https://www.prnewswire.com/news-releases/arthur-j-gallagher--co-announces-leadership-transition-in-gallaghers-benefits--hr-consulting-division-302927449.html) carried the announcement on November 3, 2026.

## Doyle Moves From Division President to CEO

Doyle currently serves as president of the Benefits & HR Consulting Division, the role from which he steps into the CEO position. Ziebell has led the division as CEO and will hand over the title at the end of 2026 before taking the chairman role.

J. Patrick Gallagher, Jr., chairman and CEO of [Gallagher](https://akta.pro/company-profiles/0002fcp/gallagher), said Doyle's knowledge of the business and ability to bring teams and businesses together will matter as the division grows. "I am confident Tom will build on its strong culture and capabilities and position the business for continued success," he said.

Gallagher credited Ziebell with building the division over 26 years. "His leadership, commitment to our culture and focus on clients have made the business stronger and positioned it well for the future," Gallagher said, adding that he looks forward to drawing on Ziebell's experience and counsel as chairman.

## Gallagher's Revenue Base Behind the Division

According to akta.pro [company records](https://akta.pro/company-data), Gallagher reported trailing twelve-month revenue of $14.97 billion as of March 31, 2026, representing 24.51% year-over-year growth. The same records show Q1 2026 revenue of $4.72 billion, up 28% from $3.688 billion in Q1 2025, and adjusted revenue of $13.8 billion for the 12 months ended December 31, 2025, covering the Brokerage and Risk Management segments.

## Earlier Moves Across Gallagher's Divisions

Gallagher launched a Cyber Risk Advisory practice in the Middle East in October 2026, with Sidharth Wahi leading it, Consultancy-me reported. That month Gallagher also acquired The Mund Group, a Texas-based employee benefits agency, with terms undisclosed, according to Stock Titan. In October 2026, PR Newswire reported that Gallagher acquired Melbourne-based Intelligent Communications Experiences, which helps businesses develop digital employee communications, with terms not disclosed.

## Ziebell's Chairman Start Date

Ziebell becomes chairman of the Benefits & HR Consulting Division on December 31, 2026, the day before Doyle's appointment as CEO takes effect.

## Companies in this story

- [Gallagher company profile](https://akta.pro/company-profiles/0002fcp/gallagher) · website: https://www.ajg.com

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