Ryan Sack


Office of Internal Oversight and Performance Assurance

Ryan Sack joined the PCAOB in October 2018, after more than 20 years of internal audit and assurance leadership experience with major publicly traded corporations, including Orbital ATK, TRW and McDonnell Douglas.

Previously, he worked for Orbital ATK, where he served as the vice president of internal audit since 2015, overseeing governance, risk and control assessments during a period of rapid transformation resulting from a corporate merger. He was also vice president of internal audit at Orbital Sciences Corporation, which he joined in 2000, rising from senior director of internal audit in 2011.

From 1990 to 1999, Mr. Sack worked at TRW Inc., where he rose to manager of government relations and finance. He worked at McDonnell Douglas as an internal audit manager from 1988 to 1990.

Mr. Sack holds a B.S. in accounting from California State University, Northridge, and an MBA from George Mason University.  His professional certifications include certified public accountant (CPA), certified internal auditor (CIA), certified information systems auditor (CISA), certified fraud examiner (CFE), certified in risk and information systems control (CRISC) and certified in risk management assurance (CRMA).