Earnings release
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Exhibit 99.1 For additional information, contact: David A. Hedges President and CEO (334) 821-9200 Press Release – July 28, 2026 Auburn National Bancorporation, Inc. Reports Second Quarter Net Earnings Second Quarter 2026 vs. Second Quarter 2025 Highlights: • Earnings per share increased 27% • Net interest income (tax-equivalent) increased 8% • Net interest margin (tax-equivalent) increased 15 basis points to 3.33% • Negative provision for credit losses of $248 thousand, compared to a charge for provision for credit losses of $113 thousand in 2Q 2025 • Return on assets (annualized) improved to 0.90%, compared to 0.74% in 2Q 2025 • Nonperforming assets decreased to 0.01% of total assets AUBURN, Alabama – Auburn National Bancorporation, Inc. (Nasdaq: AUBN) reported net earnings of $2.3 million, or $0.66 per share, for the second quarter of 2026, compared to $2.2 million, or $0.63 per share, for the first quarter of 2026, and $1.8 million, or $0.52 per share, for the second quarter of 2025. Net earnings were $4.5 million, or $1.29 per share, for the first six months of 2026, compared to $3.4 million, or $0.96 per share, for the first six months of 2025. “Our second quarter results reflect strong revenue growth, improved profitability, and continued expansion of our net interest margin,” said David A. Hedges, President and CEO. “Earnings per share increased 27% compared to the second quarter of 2025, and our asset quality, capital, and liquidity remain strong,” continued Mr. Hedges. Net interest income (tax-equivalent) was $8.0 million in the second quarter of 2026 compared to $7.8 million in the first quarter of 2026, and $7.4 million in the second quarter of 2025. Compared to the first quarter of 2026, the increase was primarily due to improvements in our net interest margin. Compared to the second quarter of 2025, the increase was due to both growth in average interest-earning assets and improvements in our net interest margin. Net interest margin (tax-equivalent) was 3.33% in the second quarter of 2026, compared to 3.28% in the first quarter of 2026 and 3.18% in the second quarter of 2025. The increase in net interest margin was primarily due to higher yields on earning assets and a more favorable asset mix. Compared to the second quarter of 2025, the increase also benefited from a lower cost of interest-bearing deposits. Average loans were approximately $582.3 million in the second quarter of 2026, compared to $577.5 million in the first quarter of 2026, and $559.8 million in the second quarter of 2025. Nonperforming assets were $0.1 million, or 0.01% of total assets, at both June 30, 2026 and March 31, 2026, compared to $0.3 million, or 0.03% of total assets at June 30, 2025. Net recoveries were $21 thousand, or (0.01%) of average loans on an annualized basis for the second quarter of 2026, compared to net charge-offs of $402 thousand, or 0.28% of average loans on an annualized basis for the first quarter of 2026, and net recoveries of $48 thousand, or (0.03%) of average loans on an annualized basis for the second quarter of 2025. Net charge-offs in the first quarter of 2026 were primarily due to one individually evaluated nonperforming loan that was fully charged-off. -more-
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At June 30, 2026, the Company’s allowance for credit losses was $6.6 million or 1.14% of total loans, compared to $6.8 million, or 1.16% of total loans at March 31, 2026, and $7.0 million, or 1.24% of total loans at June 30, 2025. The decrease from March 31, 2026 was primarily related to early payoffs in the loan portfolio during the second quarter of 2026. The decrease from June 30, 2025 was primarily due to refinements in the Company’s calculation of current expected credit losses (“CECL”). During the first quarter of 2026, the Company established a new loan segment within its CECL calculation for municipal loans, which reduced the allowance for credit losses due to lower expected credit costs associated with these loans. Prior to this change, municipal loans were included in the commercial and industrial loan segment for CECL. The Company recorded a negative provision for credit losses of $(248) thousand in the second quarter of 2026, compared to a negative provision for credit losses of $(76) thousand in the first quarter of 2026, and a charge to provision for credit losses of $113 thousand in the second quarter of 2025. The provision for credit losses is affected by changes in overall balance and composition of our loan portfolio and unfunded commitments, our internal assessment of the credit quality of the loan portfolio, our expectations about future economic conditions, and net charge-offs. Noninterest income was $0.9 million for the second quarter of 2026, largely unchanged from the first quarter of 2026, compared to $0.8 million for the second quarter of 2025. The increase from the second quarter of 2025 was primarily due to an increase in bank owned life insurance income from non-taxable death benefits received during the second quarter of 2026. Noninterest expense was $6.1 million for the second quarter of 2026, compared to $5.9 million for the first quarter of 2026 and $5.7 million for the second quarter of 2025. The increase from both periods was primarily due to a $0.4 million loss contingency accrual recorded in other noninterest expense, partially offset in the linked-quarter comparison by lower salaries and benefits and professional fees expense. The Company has notified its insurance carrier and is evaluating potential coverage, but no insurance recovery has been recognized in the second quarter 2026 results. The provision for income tax expense was $0.6 million for the second quarter of 2026, unchanged compared to the first quarter of 2026 and $0.5 million for the second quarter of 2025. The increase from the second quarter of 2025 was primarily due to the level of pre-tax earnings. The effective tax rate for the second quarter of 2026 was 21.00%, compared to 21.53% for the first quarter of 2026 and 20.92% for the second quarter of 2025. The Company’s effective income tax rate is principally affected by tax-exempt earnings from the Company’s investments in municipal securities and loans, bank-owned life insurance, and New Markets Tax Credits. Total assets were $1.1 billion at June 30, 2026, compared to $1.0 billion at both March 31, 2026 and June 30, 2025. Total deposits were $988.3 million at June 30, 2026, compared to $931.1 million at March 31, 2026, and $939.9 million at June 30, 2025. The increase compared to March 31, 2026 was primarily due to fluctuations in reciprocal customer deposits retained on balance sheet. The Company had $82.3 million of reciprocal deposits on its balance sheet at June 30, 2026, compared to $19.9 million at March 31, 2026. Compared to June 30, 2025, total deposits increased primarily due to growth in money market and interest checking account balances, partially offset by lower noninterest-bearing demand deposits. At June 30, 2026, the Company’s stockholders’ equity was $93.9 million, or $26.91 per share, compared to $93.1 million, or $26.62 per share, at March 31, 2026 and $86.1 million, or $24.64 per share, at June 30, 2025. The Company’s equity-to-assets ratio was 8.65% at June 30, 2026, compared to 9.06% at March 31, 2026 and 8.36% at June 30, 2025. The decrease in the equity-to-assets ratio from March 31, 2026 was due to balance sheet growth from retaining all reciprocal deposits on balance sheet at June 30, 2026. All of the Company’s marketable securities are classified as available-for-sale. Therefore, any changes in the fair value of the Company’s securities portfolio are reflected in total equity, net of tax, under generally accepted accounting principles, but do not affect our capital for regulatory purposes. The Company paid cash dividends of $0.27 per share in the second quarter of 2026. At June 30, 2026, the Bank’s regulatory capital ratios were well above the minimum amounts required to be “well capitalized” under current regulatory standards. -more-
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About Auburn National Bancorporation, Inc. Auburn National Bancorporation, Inc. (the “Company”) is the parent company of AuburnBank (the “Bank”), with total assets of approximately $1.1 billion. The Bank is an Alabama state-chartered bank that is a member of the Federal Reserve System, which has operated continuously since 1907. Both the Company and the Bank are headquartered in Auburn, Alabama. The Bank conducts its business in East Alabama, including Lee County and surrounding areas. The Bank operates seven full-service branches in Auburn, Opelika, Valley, and Notasulga, Alabama. The Bank also operates a loan production office in Phenix City, Alabama. Additional information about the Company and the Bank may be found by visiting www.auburnbank.com. Cautionary Notice Regarding Forward-Looking Statements This press release contains “forward-looking statements” within the meaning of the Securities Act of 1933 and the Securities Exchange Act of 1934. All statements with respect to our objectives, expectations, anticipations, estimates and intentions and all statements other than statements of historical fact are forward-looking statements. You can identify these forward-looking statements through our use of words such as “may,” “will,” “anticipate,” “assume,” “should,” “indicate,” “would,” “believe,” “contemplate,” “expect,” “estimate,” “continue,” “designed,” “plan,” “point to,” “project,” “could,” “intend,” “target,” “seek” and other similar words and expressions of the future. Forward looking statements, include, without limitation, statements about future financial and operating results, costs and revenues, government policies and changes in policies, including Federal Reserve monetary and regulatory actions. Forward looking statements also include statements about economic conditions generally in our markets and which may affect us, loan demand, mortgage lending activity, changes in the mix of our earning assets (including those generating tax exempt income or tax credits) and our mix and cost of deposits and wholesale liabilities, net interest income and margin, yields on earning assets, the market values and performance of securities held, effects of inflation and employment, including the effects of government fiscal and monetary policies. Forward-looking statements involve known and unknown risks, uncertainties and other factors, which may be beyond our control, and which may cause the actual results, performance, achievements and/or financial condition of the Company or the Bank to be materially different from future results, performance, achievements or financial condition expressed or implied by such forward-looking statements. Forward looking statements may not be realized due to numerous factors, including, without limitation, changes in employment levels, actual and expected changes in interest rates and interest rate expectations (generally and those applicable to our assets and liabilities) and the shape of the yield curve, and related changes in our asset values, especially investment securities, noninterest income, loan performance, loan deferrals and modifications, nonperforming assets, other real estate owned, provision for credit losses, including possible adjustments to the fair values of securities available for sale, charge-offs, collateral values, credit quality, asset sales, insurance claims, and market trends. You should not expect us to update any forward-looking statements. All written or oral forward-looking statements attributable to us are expressly qualified in their entirety by this cautionary notice, together with those described in the “Cautionary Note Regarding Forward-Looking Statements” and the risks and uncertainties described under “Risk Factors” and elsewhere in our annual report on Form 10-K for the year ended December 31, 2025 and otherwise in our other SEC reports and filings. -more-
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Explanation of Certain Unaudited Non-GAAP Financial Measures This press release contains financial information determined by methods other than U.S. generally accepted accounting principles (“GAAP”). The attached financial highlights include certain designated net interest income amounts presented on a tax-equivalent basis, a non-GAAP financial measure. Tax-equivalent net interest income is used in the calculation of our net interest margin and efficiency ratio. In the first quarter of 2026, we changed the presentation of net interest income on a tax-equivalent basis to account for tax-exempt interest income on municipal loans. Also, we reclassified average net unrealized gains (losses) on available-for-sale securities to average other assets so that average total securities are presented on an amortized cost basis in our calculation of net interest margin. Prior period amounts, including the presentation and calculation of our net interest margin and efficiency ratio, have been revised herein to conform with the current period presentation. These changes had no effect on the presentation of GAAP net interest income in current or prior periods. Management uses these non-GAAP financial measures in its analysis of the Company’s performance and believes the presentation of net interest income on a tax-equivalent basis provides comparability of net interest income from both taxable and tax-exempt sources and facilitates comparability within the industry. Similarly, the efficiency ratio is a common measure that facilitates comparability with other financial institutions. Although the Company believes these non-GAAP financial measures enhance investors’ understanding of its business and performance, these non-GAAP financial measures should not be considered an alternative to GAAP. Along with the attached financial highlights, the Company provides reconciliations between the GAAP financial measures and these non-GAAP financial measures. -more-
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Reports Second Quarter Net Earnings/page 5 Financial Highlights (unaudited) Quarters Ended Six months ended June 30, March 31, June 30, June 30, June 30, (Dollars in thousands, except per share amounts) 2026 2026 2025 2026 2025 Results of Operations Net interest income (a) $ 7,995 $ 7,832 $ 7,411 $ 15,827 $ 14,523 Less: tax-equivalent adjustment 107 99 67 206 134 Net interest income (GAAP) 7,888 7,733 7,344 15,621 14,389 Noninterest income 878 893 789 1,771 1,536 Total revenue 8,766 8,626 8,133 17,392 15,925 Provision for credit losses (248) (76) 113 (324) 103 Noninterest expense 6,105 5,901 5,702 12,006 11,582 Income tax expense 611 603 485 1,214 877 Net earnings $ 2,298 $ 2,198 $ 1,833 $ 4,496 $ 3,363 Per share data: Basic and diluted net earnings: $ 0.66 $ 0.63 $ 0.52 $ 1.29 $ 0.96 Cash dividends declared $ 0.27 $ 0.27 $ 0.27 $ 0.54 $ 0.54 Weighted average shares outstanding: Basic 3,492,107 3,494,229 3,493,699 3,493,162 3,493,699 Diluted 3,492,107 3,496,518 3,493,699 3,494,292 3,493,699 Shares outstanding, at period end 3,487,830 3,495,866 3,493,699 3,487,830 3,493,699 Stockholders’ equity (book value) $ 26.91 26.62 24.64 26.91 24.64 Common stock price: High $ 28.88 $ 26.50 $ 25.28 $ 28.88 $ 25.28 Low 23.03 21.01 19.48 21.01 19.48 Period-end: 27.04 23.87 25.00 27.04 25.00 To earnings ratio (c) 11.22x 10.52x 13.09x 11.22x 13.09x To book value 100% 90% 101% 100% 101% Performance ratios: Return on average equity (annualized) 9.74% 9.65% 9.00% 9.70% 8.26% Return on average assets (annualized) 0.90% 0.86% 0.74% 0.88% 0.68% Dividend payout ratio 40.91% 42.86% 51.92% 41.86% 56.25% Other financial data: Net interest margin (a) 3.33% 3.28% 3.18% 3.31% 3.13% Effective income tax rate 21.00% 21.53% 20.92% 21.26% 20.68% Efficiency ratio (b) 68.80% 67.63% 69.54% 68.22% 72.12% Asset Quality: Nonperforming assets: Nonperforming (nonaccrual) loans $ 64 $ 102 $ 302 $ 64 $ 302 Total nonperforming assets $ 64 $ 102 $ 302 $ 64 $ 302 Net charge-offs (recoveries) $ (21) $ 402 $ (48) $ 381 $ 16 Allowance for credit losses as a % of: Loans 1.14% 1.16% 1.24% 1.14% 1.24% Nonperforming loans 10,291% 6,643% 2,306% 10,291% 2,306% Nonperforming assets as a % of: Loans and other real estate owned 0.01% 0.02% 0.05% 0.01% 0.05% Total assets 0.01% 0.01% 0.03% 0.01% 0.03% Nonperforming loans as a % of total loans 0.01% 0.02% 0.05% 0.01% 0.05% Annualized net charge-offs (recoveries) as a % of average loans (0.01)% 0.28% (0.03)% 0.13% 0.01% -more-
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Selected average balances: Loans, net of unearned income $ 582,335 $ 577,489 $ 559,770 $ 579,925 $ 562,909 Total assets 1,021,742 1,026,163 990,523 1,023,940 988,907 Total deposits 925,608 930,474 905,227 928,028 906,011 Total stockholders’ equity $ 94,340 $ 91,088 $ 81,447 $ 92,723 $ 81,447 Selected period end balances: Loans, net of unearned income $ 579,589 $ 582,040 $ 562,714 $ 579,589 $ 562,714 Allowance for credit losses 6,586 6,776 6,965 6,586 6,965 Total assets 1,085,803 1,026,946 1,029,224 1,085,803 1,029,224 Total deposits 988,318 931,109 939,851 988,318 939,851 Total stockholders’ equity $ 93,874 $ 93,061 $ 86,071 $ 93,874 $ 86,071 (a) Tax equivalent. See “Explanation of Certain Unaudited Non-GAAP Financial Measures” and “Reconciliation of GAAP to non-GAAP Measures (unaudited).” (b) Efficiency ratio is the result of noninterest expense divided by the sum of noninterest income and tax-equivalent net interest income. See “Reconciliation of GAAP to non-GAAP Measures (unaudited)” below. (c) Calculated by dividing period end share price by earnings per share for the previous four quarters. -more-
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Reports Second Quarter Net Earnings/page 6 Average Balances and Net Interest Income Analysis (1) Quarter ended June 30, 2026 March 31, 2026 June 30, 2025 Interest Interest Interest Average Income/ Yield/ Average Income/ Yield/ Average Income/ Yield/ (Dollars in thousands) Balance Expense Rate Balance Expense Rate Balance Expense Rate Interest-earning assets: Loans and loans held for sale (2) (3) $ 582,590 $ 8,274 5.70% $ 577,847 $ 8,014 5.62% $559,939 $ 7,726 5.53% Securities (3) (4) 250,569 1,219 1.95% 256,565 1,241 1.96% 274,026 1,336 1.96% Federal funds sold 29,471 260 3.54% 24,352 216 3.60% 25,705 280 4.37% Interest bearing bank deposits 100,439 934 3.73% 108,509 989 3.70% 76,237 836 4.40% Total interest-earning assets 963,069 $10,687 4.45% 967,273 $10,460 4.39% 935,907 $10,178 4.36% Cash and due from banks 13,515 14,153 15,936 Other assets (5) 45,158 44,737 38,680 Total assets $1,021,742 $1,026,163 $990,523 Interest-bearing liabilities: Deposits: NOW $ 213,794 $ 627 1.18% $ 236,218 $ 779 1.34% $198,973 $ 649 1.31% Savings and money market 274,169 680 0.99% 257,214 473 0.75% 253,704 646 1.02% Time deposits 181,093 1,385 3.07% 179,947 1,376 3.10% 184,666 1,471 3.20% Total interest-bearing deposits 669,056 2,692 1.61% 673,379 2,628 1.58% 637,343 2,766 1.74% Short-term borrowings — — — — — — 110 1 3.65% Total interest-bearing liabilities 669,056 $ 2,692 1.61% 673,379 $ 2,628 1.58% 637,453 $ 2,767 1.74% Noninterest-bearing deposits 256,552 257,095 267,884 Other liabilities 1,794 4,601 3,739 Stockholders’ equity 94,340 91,088 81,447 Total liabilities and stockholders’ equity $1,021,742 $1,026,163 $990,523 Net interest income and margin (tax-equivalent) $ 7,995 3.33% $ 7,832 3.28% $ 7,411 3.18% (1) In the first quarter of 2026, we changed the presentation of net interest income on a tax-equivalent basis to account for tax-exempt interest income on municipal loans. Also, we reclassified average net unrealized gains (losses) on available-for-sale securities to average other assets so that average total securities are presented on an amortized cost basis in our calculation of net interest margin. Prior period amounts, including the presentation and calculation of our net interest margin, have been revised to conform with the current period presentation. (2) Loans on nonaccrual status have been included in the computation of average balances. (3) Reflects tax-equivalent adjustments, using the statutory federal income tax rate of 21%, in adjusting interest on tax-exempt loans and securities to a tax-equivalent basis. (4) Securities are included on an amortized cost basis with yield and net interest margin calculated accordingly. (5) Includes average net unrealized gains (losses) on securities available-for-sale of $(26.2), $(25.9), and $(33.8) million for the quarters ended June 30, 2026, March 31, 2026, and June 30, 2025, respectively. -more-
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Reports Second Quarter Net Earnings/page 7 Average Balances and Net Interest Income Analysis (1) Six months ended June 30, 2026 2025 (Dollars in thousands) AverageBalance InterestIncome/Expense Yield/Rate AverageBalance InterestIncome/Expense Yield/Rate Interest-earning assets: Loans and loans held for sale (2) (3) $ 580,231 $16,288 5.66% $563,086 $15,318 5.49% Securities (3) (4) 253,550 2,460 1.96% 277,026 2,703 1.97% Federal funds sold 26,925 475 3.56% 26,282 571 4.38% Interest bearing bank deposits 104,452 1,924 3.71% 68,777 1,514 4.44% Total interest-earning assets 965,158 $21,147 4.42% 935,171 $20,106 4.34% Cash and due from banks 13,832 17,001 Other assets (5) 44,950 36,735 Total assets $1,023,940 $988,907 Interest-bearing liabilities: Deposits: NOW $ 224,944 $ 1,407 1.26% $204,069 $ 1,391 1.37% Savings and money market 265,739 1,152 0.87% 248,233 1,147 0.93% Time deposits 180,523 2,761 3.08% 187,763 3,044 3.27% Total interest-bearing deposits 671,206 5,320 1.60% 640,065 5,582 1.76% Short-term borrowings — — — 55 1 3.67% Total interest-bearing liabilities 671,206 $ 5,320 1.60% 640,120 $ 5,583 1.76% Noninterest-bearing deposits 256,822 265,946 Other liabilities 3,189 3,030 Stockholders’ equity 92,723 79,811 Total liabilities and stockholders’ equity $1,023,940 $988,907 Net interest income and margin (tax-equivalent) $15,827 3.31% $14,523 3.13% (1) In the first quarter of 2026, we changed the presentation of net interest income on a tax-equivalent basis to account for tax-exempt interest income on municipal loans. Also, we reclassified average net unrealized gains (losses) on available-for-sale securities to average other assets so that average total securities are presented on an amortized cost basis in our calculation of net interest margin. Prior period amounts, including the presentation and calculation of our net interest margin, have been revised to conform with the current period presentation. (2) Loans on nonaccrual status have been included in the computation of average balances. (3) Reflects tax-equivalent adjustments, using the statutory federal income tax rate of 21%, in adjusting interest on tax-exempt loans and securities to a tax-equivalent basis. (4) Securities are included on an amortized cost basis with yield and net interest margin calculated accordingly. (5) Includes average net unrealized gains (losses) on securities available-for-sale of $(26.1) and $(36.6) million for the six months ended June 30, 2026 and 2025, respectively. -more-
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Reports Second Quarter Net Earnings/page 8 Reconciliation of GAAP to non-GAAP Measures (unaudited): Quarters Ended Six months ended (Dollars in thousands, except per share amounts) June 30,2026 March 31,2026 June 30,2025 June 30,2026 June 30,2025 Net interest income, as reported (GAAP) $7,888 $ 7,733 $7,344 $15,621 $14,389 Tax-equivalent adjustment 107 99 67 206 134 Net interest income (tax-equivalent) $7,995 $ 7,832 $7,411 $15,827 $14,523