Audit Director


Sonja Dugan has over 17 years of experience providing auditing and accounting services to companies within a broad range of industries, including the manufacturing and retail sectors. Her experience consists of over 13 years at KPMG and four years at a small public accounting firm. She holds an MBA from the University of Duisburg, Germany.


After completing her graduate studies, Sonja worked in the audit department of KPMG in Germany. During this time, she obtained her licenses as Steuerberaterin (Tax Advisor), and Wirtschaftsprüferin (Chartered Accountant). Her duties at KPMG focused on the audit of financial statements and consolidated financial statements for mid-size international corporate clients. She has specialized experience in the field of post-merger integration services and optimization of financial processes, refinancing, and restructuring. After relocating to the United States, she obtained her California CPA license in 2016 and worked for a small public accounting firm based in New York.


Sonja joined Spiegel in 2021 and is currently responsible for managing multiple corporate audit engagements. Sonja likes to spend her free time with her 5-year-old twins.