Exhibit 99.1

FIRST FINANCIAL BANKSHARES ANNOUNCES FIRST QUARTER 2021 EARNINGS

ABILENE, Texas, April 22, 2021 - First Financial Bankshares, Inc. (NASDAQ: FFIN) today reported earnings for the first quarter of 2021 of $56.92 million, up $19.69 million or 52.87 percent, when compared with earnings of $37.23 million in the same quarter a year ago. Diluted earnings per share were $0.40 for the first quarter of 2021 compared with $0.26 in the same quarter a year ago.

“We are extremely pleased that last year we did not look at the pandemic as a hurdle to performance, but we looked at it as an opportunity to be here and serve our customers. This created a great deal of momentum which maximized earnings last year and has rolled right into the first quarter this year. During the quarter, the Company had an organic asset growth of $1.20 billion driven by loan growth of $103.38 million, net of PPP and held-for-sale loans, and deposit growth of $737.63 million while overall asset quality continued to improve. We remain very focused on serving our customers and capitalizing on our growth over the last year,” said F. Scott Dueser, Chairman, President and CEO of First Financial Bankshares, Inc.

Net interest income for the first quarter of 2021 was $88.82 million, up $7.92 million from $80.90 million for the first quarter of 2020. The net interest margin, on a taxable equivalent basis, was 3.55 percent for the first quarter of 2021 compared to 3.75 percent in the fourth quarter of 2020 and 3.91 percent in the first quarter of 2020. Net interest income was positively impacted by a $2.05 billion increase in average-earning assets to $10.56 billion for the first quarter of 2021 when compared to the same period a year ago. The net interest margin was negatively impacted by the overall level of excess liquidity which totaled $1.08 billion at March 31, 2021 pending investment.

For the first quarter of 2021, interest income included Payroll Protection Program (“PPP”) loan fees of $6.25 million compared to $5.67 million for the fourth quarter of 2020. The remainder of the PPP loan deferred fees totaled approximately $16 million at March 31, 2021, including approximately $11 million for 2021 originations, and continue to be amortized over the shorter of the repayment period or the contractual life of 24 to 60 months. Additional information related to the Company’s PPP loan balances are included in the following table:

At March 31, 2021, the Company recorded a negative provision for credit losses during the first quarter of 2021 of $2.00 million. The Company’s provision for credit losses in the first quarter of 2021 reflected the continued improvement in the economic outlook for our markets across Texas and overall improvements in asset quality.

During the first quarter of 2021, net charge-offs totaled $131 thousand compared to $1.91 million in the first quarter of 2020. At March 31, 2021, the allowance for credit losses totaled $62.97 million, or 1.18 percent of loans held-for-investment (“loans” hereafter), or 1.31 percent of loans excluding PPP loans, compared to $60.44 million at March 31, 2020, or 1.30 percent of loans. Additionally, the reserve for unfunded commitments totaled $6.92 million at March 31, 2021. Nonperforming assets as a percentage of loans and foreclosed assets totaled 0.75 percent at March 31, 2021, compared with 0.87 percent at March 31, 2020. Classified loans totaled $190.42 million at March 31, 2021, compared to $190.35 million at March 31, 2020.

Noninterest income in the first quarter of 2021 rose to $34.87 million from $28.73 million for the first quarter of 2020, as a result of the following:

Noninterest expense for the first quarter of 2021 totaled $57.72 million compared to $55.32 million in the first quarter of 2020, as a result of the following:

The Company’s efficiency ratio was 45.36 percent for the first quarter of 2021 compared to 49.63 percent for the first quarter of 2020.

As of March 31, 2021, consolidated assets for the Company totaled $12.10 billion compared to $9.70 billion at March 31, 2020. Loans totaled $5.32 billion at March 31, 2021, compared with loans of $4.64 billion at March 31, 2020. During the first quarter of 2021, loans, excluding PPP loans, grew $103.38 million or 8.94 percent annualized, from December 31, 2020 balances. Deposits totaled $9.41 billion at March 31, 2021, compared to $7.21 billion at March 31, 2020, driven by organic growth. Shareholders’ equity rose to $1.67 billion as of March 31, 2021, compared to $1.53 billion at March 31, 2020.

About First Financial Bankshares, Inc.

Headquartered in Abilene, Texas, First Financial Bankshares, Inc. is a financial holding company that through its subsidiary, First Financial Bank, N.A., operates multiple banking regions with 78 locations in Texas, including Abilene, Acton, Albany, Aledo, Alvarado, Beaumont, Boyd, Bridgeport, Brock, Bryan, Burleson, College Station, Cisco, Cleburne, Clyde, Conroe, Cut and Shoot, Decatur, Eastland, El Campo, Fort Worth, Fulshear, Glen Rose, Granbury, Grapevine, Hereford, Huntsville, Keller, Kingwood, Magnolia, Mauriceville, Merkel, Midlothian, Mineral Wells, Montgomery, Moran, New Waverly, Newton, Odessa, Orange, Palacios, Port Arthur, Ranger, Rising Star, Roby, San Angelo, Southlake, Stephenville, Sweetwater, Tomball, Trent, Trophy Club, Vidor, Waxahachie, Weatherford, Willis, and Willow Park. The Company also operates First Financial Trust & Asset Management Company, N.A., with ten locations and First Technology Services, Inc., a technology operating company.

The Company is listed on The NASDAQ Global Select Market under the trading symbol FFIN. For more information about First Financial, please visit our website at http://www.ffin.com.

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Certain statements contained herein may be considered “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995. These statements are based upon the belief of the Company’s management, as well as assumptions made beyond information currently available to the Company’s management, and may be, but not necessarily are, identified by such words as “expect”, “plan”, “anticipate”, “target”, “forecast” and “goal”. Because such “forward-looking statements” are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Factors that could cause actual results to differ materially from the Company’s expectations include competition from other financial institutions and financial holding companies; the effects of and changes in trade, monetary and fiscal policies and laws, including interest rate policies of the Federal Reserve Board; economic impact of oil and gas prices and the pandemic, changes in the demand for loans; fluctuations in value of collateral and loan reserves; inflation, interest rate, market and monetary fluctuations; changes in consumer spending, borrowing and savings habits; and acquisitions and integration of acquired businesses, and similar variables.    Other key risks are described in the Company’s reports filed with the Securities and Exchange Commission, which may be obtained under “Investor Relations-Documents and Filings” on the Company’s Website or by writing or calling the Company at 325.627.7155. Except as otherwise stated in this news announcement, the Company does not undertake any obligation to update publicly or revise any forward-looking statements because of new information, future events or otherwise.

FIRST FINANCIAL BANKSHARES, INC.

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FIRST FINANCIAL BANKSHARES, INC.

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FIRST FINANCIAL BANKSHARES, INC.

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