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Robert Thomas

CPA Partner

Get to Know Me

Rob Thomas is a partner with over 15 years of experience in accounting. Rob helps life sciences and technology and emerging growth companies ensure their financial statements accurately reflect the business they present to investors and other stakeholders.

He has experience with IPOs and secondary offerings on Form S-1 and S-3, performing audits under US GAAS and PCAOB standards and complex areas of accounting like revenue recognition (ASC 606), leases (ASC 842), stock-based compensation, complex financial instruments and business combinations. He has worked on various teams that perform services ranging from audit, review, agreed-upon procedures and compilations.

Industry Expertise

Service Expertise

Learn More About My Story

Learn more about my professional experience and how I spend my time outside the firm.

Education:

  • MBA, Binghamton University
  • BS Bioengineering, Binghamton University

Professional Affiliations:

  • Member, American Institute of Certified Public Accountants (AICPA)
  • Member, California Society of Certified Public Accountants (CalCPA)
  • Top 50 Accountant, San Francisco Business Times and CalCPA – 2026

As a thought leader in the industry, Rob has co-authored industry articles with IT consulting experts and presents at life science advisory group events. He has also led panel discussions with industry experts related to exit planning for business transactions.

Rob serves on the Audit Committee of his daughter’s school.

Rob’s hobbies include hiking, golfing, wine tasting and watching the Syracuse Orange, Golden State Warriors and Valkyries and the Indianapolis Colts. He enjoys spending time with his family and traveling.

Authored Insights

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CalCPA Names Withum Leaders to 2026 NorCal Top 50 Accountants

Top 50 Accountant Honorees at Withum Brandon Yip Brandon Yip is a partner who leads Withum’s Technology and Emerging Growth Services Team in the San Francisco Bay Area. He focuses on advising public and private companies on audit, regulatory and transactional matters while helping innovation-driven organizations scale. Deeply connected to Northern California, he supports the region’s technology and life sciences ecosystem…