On April 13, TNB Bancshares Inc., the holding company for Mercedes-based Texas National Bank, announced that it has entered into a definitive agreement to acquire Zapata Bancshares Inc. and its bank subsidiary, Zapata-based Zapata National Bank. This acquisition aligns with Texas National Bank’s 2025 expansion into Starr County through the acquisition Roma-based Citizens State Bank. The transaction is expected to close in June.
Zapata National Bank is a full-service bank with more than $85 million in total assets. The combined company will have approximately $1.3 billion in assets with 13 branches across Hidalgo, Cameron, Starr and Zapata counties.
“Over the past few months, Texas National Bank has reached several milestones, including surpassing $1 billion in total assets, the acquisition in Starr County and now the announcement of our proposed expansion into Zapata County,” notes Joe Quiroga, president of Texas National Bank. “We are also excited to soon be moving into our corporate headquarters in McAllen.”
“Since 1961, Zapata National Bank has proudly served our customers and community with personal attention, local decision‑making and a commitment to doing what’s right,” says José “Pepe” Ramirez III, president and CEO of Zapata National Bank. “With this partnership, our customers will gain access to a wider array of product offerings and expanded geographic locations.”
Hunton Andrews Kurth LLP served as legal counsel to Texas National Bank and Kemp Smith LLP served as legal counsel to Zapata National Bank.
Established in 1920, Texas National Bank serves Hidalgo, Cameron, Starr counties with 12 branches.


