John Mackel

John J. Mackel III, CPA, is the Chief Executive Officer and Managing Partner of Weaver, one of the largest independent accounting and advisory firms in the United States and historically the largest in the Southwest. He has more than two decades of public accounting experience and has built his career around audit, attestation, and advisory services, with concentrations in oil and gas, renewable energy, and investment management. He began his career at a Big Four firm (KPMG) before building his practice at Weaver.

Mackel has been a member of Weaver's executive committee since June 2009. In the years preceding his appointment as CEO, he led the firm's industry practice groups for roughly five years — overseeing and transforming Weaver's go-to-market approach and growth strategy across its focus industries — and served as the partner-in-charge of the firm's oil and gas practice. He was named managing partner and CEO effective June 1, 2015, succeeding the prior firm leadership in a planned transition.

He holds a Bachelor of Business Administration in accounting from Sam Houston State University. As CEO, he leads Weaver's executive team and is responsible for setting and executing the firm's strategic vision, including its national expansion. Industry recognition includes being named to Forbes' 2025 Best-in-State CPAs list and to Fort Worth Inc.'s "Top 400 Most Influential People."

There is no verifiable evidence that John Mackel operates as an angel investor with a personal investment thesis, defined check sizes, or a seed-stage focus. Accordingly, no thesis is asserted here. What can be supported from sources is his professional orientation as a firm leader:

*(If you are seeking an angel investor named "John Mackel," this profile likely reflects a data-mapping error in the source list; the verified individual at `@weaver.com` is a CPA firm executive.)*

• Leads an accounting/advisory firm whose industry focus areas are oil & gas, renewable energy, and investment management.
• Practice expertise centers on audit, attestation, and advisory services — the buy-side/diligence-adjacent services a startup or fund might *engage*, rather than capital a founder would *raise*.
• Drives Weaver's growth and national expansion strategy as CEO.

No personal angel or venture investments by John Mackel could be verified from public sources. Listing any would require fabrication, which has been deliberately avoided. (His professional "deals" are firm-level audit/advisory engagements and Weaver's own corporate growth/M&A activity, not startup equity investments.)