Weaver is a Houston, Texas-based accounting firm with a history that goes back to 1950. Today, the firm has 14 offices, nine of which are in Texas; its offices outside the Lone Star State are in New York City, San Diego, Manhattan Beach, and Grand Cayman. Weaver is among the largest 35 accounting firms in the U.S., measured by annual revenues. It is also the largest independent CPA firm in the Southwest. The firm is led by John Mackel, Weaver's managing partner and CEO.