On October 1, Prosperity Bancshares Inc., the parent company of Houston-based Prosperity Bank, and Southwest Bancshares Inc., the parent holding company of San Antonio-based Texas Partners Bank, jointly announced the signing of a definitive merger agreement whereby Prosperity will acquire Southwest Bancshares and Texas Partners Bank. The merger is expected to close during the first quarter of 2026.
Texas Partners operates 11 banking offices in Central Texas, including San Antonio, Austin and the Texas Hill Country. As of June 30, Southwest Bancshares reported total assets of $2.4 billion, total loans of $1.9 billion and total deposits of $2.1 billion.
Brent Given, Texas Partners interim chair, president and CEO, will join Prosperity Bank as San Antonio area chairman and Tom Moreno, Texas Partners’ chief operating officer, will have a senior management position in Prosperity Bank’s operations. Additional members of Texas Partners management will maintain leadership roles in the combined organization. In addition, upon completion of the merger, Gene Dawson Jr., interim chairman, president and CEO of Southwest, will join the board of directors of Prosperity Bank.
“We have wanted to expand our presence in the fast-growing and desirable San Antonio and Hill Country areas and Southwest’s locations are an excellent fit,” says David Zalman, senior chair and CEO of Prosperity. “Combined with the American Bank acquisition [July 2025], we will have 10 banking centers in the San Antonio area, expand into Kerrville and Bandera and enhance our presence in Austin, Fredericksburg and New Braunfels. The customers of Texas Partners will be able to use any of our locations across Texas and Oklahoma after operational integration.”
“For the past 18 years, Texas Partners Bank has proudly served locally owned businesses, their owners and employees in our fast-growing communities,” Given notes. “We are excited to join Prosperity Bank, a leading Texas-based financial institution, bringing together the strength and resources of a larger regional bank, while maintaining the local decision-making and personalized service our clients know and trust.”
Southwest is being advised by Stephens Inc. as financial advisor and Fenimore Kay Harrison LLP as legal counsel. Wachtell, Lipton, Rosen & Katz is serving as legal counsel to Prosperity.
Established in in 1983, Prosperity Bank operates 283 full-service locations: 62 in the Houston area, 33 in South Texas, 61 in the Dallas/Fort Worth area, 22 in East Texas, 31 in the Central Texas, 45 in the West Texas, 15 in the Bryan/College Station area and 14 in Oklahoma.
