William Ziebell

Corporate Officer/Principal at ARTHUR J. GALLAGHER & CO.

Net worth: 10 M $ as of 31/05/2026

Finance

Consumer Services

Profile

William F.
Ziebell has been CEO-Employee Benefit Consulting & Brokerage at Arthur J.
Gallagher & Co. since 2000.
He has also been Chief Executive Officer at Gallagher Benefit Services, Inc. since 2017, with employment at the firm starting in 2000.
Mr. Ziebell earned an MBA from The University of Chicago and completed undergraduate studies at Northern Illinois University.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
ARTHUR J. GALLAGHER & CO. 0.02%	15/03/2026	49,175 ( 0.02% )	10 M $	31/05/2026

William Ziebell active positions

Companies	Position	Start
ARTHUR J. GALLAGHER & CO.	Corporate Officer/Principal	01/01/2011
Gallagher Benefit Services, Inc. Gallagher Benefit Services, Inc. Investment ManagersFinance Provides employee benefit services	Chief Executive Officer	01/01/2017

All active positions of William Ziebell

Training of William Ziebell

Experiences
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Private companies

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Connections

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Linked companies

Private companies	4
Arthur J. Gallagher & Co. Arthur J. Gallagher & Co. Insurance Brokers/ServicesFinance Provides insurance brokerage and third-party claims settlement and administration services.	Finance
The University of Chicago The University of Chicago Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Northern Illinois University Northern Illinois University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Gallagher Benefit Services, Inc. Gallagher Benefit Services, Inc. Investment ManagersFinance Provides employee benefit services	Finance