John Mackel

Managing Partner and Chief Executive Officer

John Mackel

Location: Houston
Services: Assurance, Leadership Team

John Mackel, CPA, has nearly 20 years of experience in public accounting and currently serves as Weaver’s managing partner and CEO. John began his career with a Big Four firm and, over the years, has dedicated his practice to providing high-quality audit, attestation and advisory services, primarily in the oil and gas, renewable energy and investment management sectors. 

Prior to his role as CEO, John led Weaver’s industry practice groups for five years, and was responsible for leading and transforming the firm’s go-to-market approach and growth strategy across its focus industries. He also served as the partner-in-charge of the firm’s oil and gas practice and has been a member of Weaver’s executive committee since June of 2009. 

The combination of a tenured career with Weaver, longstanding client relationships and his role as a committed leader in the accounting industry have served John well and support his initiatives and strategy as the firm’s managing partner and CEO. 

John is an active member of numerous industry associations, helping him remain on the forefront of industry and regulatory changes. In addition, he currently serves on Baker Tilly International’s North American Regional Advisory Council. He earned a bachelor’s degree in business administration from Sam Houston State University.