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Critical security insights, without disruption

Sentry Assurance’s mission is to provide critical security insights, without disruption. As former “Big 4” auditors we understand that not all audit reports are created equal and audit quality is paramount to the value of the report. That is why we’ve built our audit process from the ground up, allowing for minimal disruption, while maintaining audit quality, so you can have the best of both worlds.

At Sentry, we focus on four core differentiators that we feel bring value to our clients:

Sentry Assurance, LLC. is a registered Certified Public Accounting firm registered in the state of Ohio.

Leadership Team


Jacob Nix


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Matt Drewyor

Co-Founder & Managing Principal


Chad Gross, VP of Cybersecurity Compliance

Jacob Nix is the Founder of Sentry, a proud graduate of Bowling Green State University, and a "Big Four" alumnus. Jake previously served in a Global Risk and Controls Transformation role working with firm leadership and executives to shape both firm methodology and design innovative compliance programs for Fortune 500 clients. He maintains an active CPA license and is a certified AWS Cloud Practitioner, amongst other specialty certifications, including CISM, CISA, CMMC RP, CDPSE, ISO Lead Implementer, CCSFP, and Okta Certified Professional.

Matt Drewyor is the Managing Principal of Sentry. He is a proud graduate of the University of Toledo and a Big 4 alumnus, having previously served in auditing roles at Deloitte and PwC. He has extensive experience in global environments across multiple industries leading external IT Audit, Internal IT Audit, and internal IT and business risk consulting specializing in internal controls. 

Chad Gross is the Vice President of Cybersecurity Compliance Services. He has over 15 years of accounting and internal and external audit experience across numerous industries. Over the years, Chad has helped businesses enjoy successful ISO 27001, SOC 1, SOC 2, HIPAA-HITECH and Privacy Assessment audit results. Throughout the course of his career, Chad has worked with Porter, Keadle & Moore (Wipfli) , Ernst & Young, and most recently A-LIGN, as the Director of Services and International Operations role.

Sentry Advisory Board


John Duda

Chairman & CEO of Summit Exercises & Training

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Paul Sobel

Former Chairman of the COSO Board of Directors

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