William Brennan was formerly a Chief Tax Officer at Vertex, Inc. He has over 33 years of tax experience with a record of building, developing, and leading large corporate tax departments. Bill has worked in many industries throughout his career including healthcare, software, financial services, transportation and manufacturing. His tax practice experience has included planning, intercompany transfer pricing, structuring/restructuring of business operations, offshore intangibles, contract manufacturing, cross-border financing, mergers and acquisitions, legislation, private letter rulings, examinations, administrative appeals, and litigation. As a former Vertex Chief Tax Officer, Bill provided insight and thought leadership regarding in-house corporate tax department operations, global tax law and policies, and emerging tax industry trends. In addition, Bill advised Vertex’s Board of Directors and senior management on the development of the company’s income tax solutions under Vertex Enterprise. Prior to working at Vertex, Bill was the Vice President-Taxes at McKesson Corporation for 12 years. McKesson Corporation is a Fortune 15 company with revenue in excess of $130 billion, and is the largest pharmaceutical distributor and health care information technology company in North America. In addition, Bill has held senior leadership roles for a number of other Fortune 500 companies throughout his career. Bill received a Master of Science in Taxation from Golden Gate University and a Bachelor’s degree in Accounting from Marquette University. He is a licensed CPA and a member of the AICPA, IFA and USCIB.