Strategic Partnership with Luther King Capital Management

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SOUTHWEST BANCSHARES, INC. SUBSIDIARY TEXAS PARTNERS BANK ANNOUNCES PARTNERSHIP WITH LUTHER KING CAPITAL MANAGEMENT

Enhances the regional bank’s position as a leading provider of integrated financial services and solutions

SAN ANTONIO, Texas - Southwest Bancshares, Inc. (“SWB”), a Texas corporation and the holding company for its wholly owned subsidiary, Texas Partners Bank, San Antonio, Texas (the “Bank”), today announced their partnership with Luther King Capital Management ("LKCM”) to offer the Bank’s clients a comprehensive suite of investment advisory and wealth management services and solutions, underpinned by each team’s unwavering commitment to integrity and client-focused service.

By partnering with LKCM and utilizing its time-tested investment advisory services, Texas Partners Bank will scale its integrated financial solutions for its clients through their combined financial strength and stability, thought-leadership, and a one-team approach to provide great service and create lasting value for clients.

“We are honored to launch the full potential of our partnership with LKCM to serve our clients at every phase of their financial journey,” said J. Bruce Bugg Jr., Chairman, President, and CEO of SWB and Chairman and CEO of Texas Partners Bank. “We will leverage our complementary strengths to deliver the winning combination of client-focused service, deep expertise, and long-term personal relationships with Luther King Capital Management.”

Brent Given, President of Texas Partners Bank, said, “Texas Partners Bank is proud to partner with LKCM’s exceptionally talented team. Together, we will continue to power the exceptional organic growth

ABOUT SOUTHWEST BANCSHARES, INC.

Southwest Bancshares, Inc., the bank holding company for Texas Partners Bank, has over $2 billion in assets. Texas Partners Bank operates in its Central Texas markets under the names The Bank of San Antonio, The Bank of Austin, and Texas Hill Country Bank. Texas Partners Bank began in 2007 and operates 11 branches in the greater San Antonio, Austin, and Texas Hill Country areas. The Bank offers traditional banking products to both business and consumer customers with a focus on business banking. For additional information, please visit the Bank’s website at www.texaspartners.bank.

ABOUT LUTHER KING CAPITAL MANAGEMENT

Luther King Capital Management (“LKCM”) is an SEC-registered investment advisory firm founded in 1979 in Fort Worth, Texas. With offices in Fort Worth, Austin, San Antonio and Dallas, LKCM provides investment advisory services to high net worth individuals, foundations, endowments, investment companies, pension and profit sharing plans, trusts and estates, among other organizations. LKCM is independently owned and operated by employees of the firm. LKCM’s team of 97 employees includes 65 investment and other professionals, including 28 CFAs, 9 CPAs, 3 CFPs and 35 employees with MBAs. For additional information, please visit https://www.lkcm.com/.