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Cass Contact : Cass Investor Relations ir@cassinfo.com October 22 , 2026 Exhibit 99.1 Cass Information Systems reports Third Quarter 2026 Results ST . LOUIS - Cass Information Systems , Inc. ( Nasdaq : CASS ) ( the Company or Cass ) today reported its third quarter 2026 earnings . Strong year - over - year growth in net income and EPS Continued net interest margin expansion Third Quarter Financial Highlights ( All comparisons refer to the third quarter of 2025 , except as noted ) Net income and diluted earnings per share of $ 10.6 million and $ 0.81 , respectively , increases of 16.1 % and 19.1 % , respectively . Return on average equity of 17.46 % . Increase in net interest margin to 4.02 % compared to 3.87 % . Increase in net interest income of $ 1.9 million , or 8.9 % . • Increase in financial fees of $ 1.2 million , or 11.8 % . • Increase in total revenues of $ 2.6 million , or 5.3 % . • Increase in transportation dollar volumes of 14.5 % . . Increase in average deposits of $ 79.2 million , or 7.8 % . • Increased quarterly dividend by $ 0.02 to $ 0.34 per share for the fourth quarter of 2026 . Martin Resch , the Company's President and Chief Executive Officer , noted , " We are pleased with our third quarter financial results , reflecting continued profitability growth throughout all of our lines of business . ” Resch added , “ Recent CassPay and Facilities client wins , combined with higher transportation and facility dollar volumes , present us with an enviable outlook for continued growth in assets , net interest income and financial fees in coming quarters . The improved revenue outlook , when combined with additional technology enhancements designed to improve client experience and reinforce our competitive advantages , should allow for enhanced profitability for the next several quarters . " Earnings for the third quarter of 2026 are summarized as follows : ( $ in thousands , except per share data ) Three Months Ended 9/30/26 6/30/26 3/31/26 12/31/25 9/30/25 Nine Months Ended 9/30/26 9/30/25 Net income from continuing operations $ 10,568 $ 10,575 $ Net income $ 10,574 $ 10,587 $ 8,739 8,832 $ 8,189 $ 8,189 $ 9,212 9,106 $ 29,882 $ 22,922 $ 29,993 $ 26,927 Diluted earnings per share from continuing operations $ 0.81 0.81 Diluted earnings per share $ 0.81 $ 0.81 $ 0.66 $ 0.67 $ 0.62 $ 0.62 $ Return on average equity 17.46 % 17.72 % 14.63 % 13.45 % 0.69 $ 0.68 $ 15.29 % 2.28 $ 2.29 $ 16.60 % 1.69 1.99 15.51 % Return on average assets 1.60 % 1.67 % 1.42 % 1.28 % 1.44 % 1.56 % 1.48 % Net interest margin 4.02 % 4.00 % 3.95 % 3.93 % 3.87 % 3.99 % 3.80 %