WilliamsMarston Welcomes Newest Advisory Partner Stephan Choe

Feb 2, 2026

WilliamsMarston LLC, a national leader in complex accounting, tax, technology, transaction, and valuation advisory services, has expanded its Advisory practice with the addition of Stephan Choe, a new partner based in Chicago.

Choe brings more than 20 years of accounting and financial reporting experience to WilliamsMarston, advising clients across a broad range of industries including life sciences, healthcare, automotive, manufacturing, consumer products, and retail.

“Stephan’s deep technical expertise and global perspective will be a tremendous asset to our Advisory practice,” said Mike Donoso, Partner and Northeast Region Advisory Practice Leader of WilliamsMarston. “As demand for our services continues to grow, Stephan adds meaningful depth to our ability to support clients navigating complex accounting, transaction, and transformation challenges.”

Previously, Choe was a Partner in the Financial Accounting Advisory practice at Ernst & Young LLP in Chicago, where he served as EY’s Central Region Financial Accounting Advisory Services Leader for Life Sciences & Healthcare. In this role, he advised Fortune 100 and Fortune 500 companies, private equity-owned, and privately held organizations on complex accounting matters including transaction accounting, GAAP conversions, accounting change, IFRS, revenue recognition, and finance transformation. He also frequently represented EY as a speaker at client and industry events.

Choe holds a Diplom-Ökonom (equivalent to a master’s degree in economics and business administration) from Ruhr University Bochum. He is a Certified Public Accountant, a German Certified Public Accountant, and a German Certified Tax Advisor.

About WilliamsMarston

WilliamsMarston is a national accounting, tax, technology, transaction and valuation advisory Firm serving pre-IPO, public and private equity-backed companies managing rapid growth and transformation. Our team of more than 250 industry-leading professionals pair strong technical expertise and a wide range of experience—including from the Big 4—with the passion and talent needed to deliver successful outcomes in the most complex and challenging situations.

For more information, please visit https://williamsmarston.com/ and follow WilliamsMarston on LinkedIn.