EXHIBIT 99.1

AMES NATIONAL CORPORATION

ANNOUNCES EARNINGS FOR THE second QUARTER OF 2026

Ames, Iowa – Ames National Corporation (Nasdaq: ATLO; the “Company”) today reported net income for the second quarter of 2026 of $5.9 million, or $0.67 per share, compared to $4.5 million, or $0.51 per share, earned in the second quarter of 2025. For the six months ended June 30, 2026, net income for the Company totaled $11.9 million, or $1.34 per share, compared to $8.0 million, or $0.89 per share earned in the same period of 2025. The increase in earnings is primarily due to an increase in net interest income. Net interest income increased due to higher yields and average balances on investments, combined with a lower cost of funds driven by declining market rates and reduced borrowings.

INCOME STATEMENT HIGHLIGHTS (unaudited)

COMPANY STOCK HIGHLIGHTS (unaudited)

BALANCE SHEET HIGHLIGHTS (unaudited)

Second Quarter 2026 Results:

Second quarter 2026 loan interest income was $664 thousand higher than second quarter 2025 and was primarily due to improved yield on the loan portfolio. Interest income from investment securities increased by $1.4 million during this same period due to higher average balances and maturities reinvested at higher rates. Interest-bearing deposits with banks and federal funds sold interest income decreased by $303 thousand during this same period due to lower average balances. Deposit interest expense decreased $906 thousand during this same period due primarily to decreases in market rates. Other borrowed funds interest expense decreased $217 thousand during the same period due primarily to reduced borrowings. Second quarter 2026 net interest income totaled $16.4 million, an increase of $2.9 million, or 21.7%, compared to the same quarter a year ago. These factors were the primary contributors to the Company’s net interest margin, on a tax-equivalent basis (a non-GAAP measure), improving to 3.18% for the quarter ended June 30, 2026 as compared to 2.65% for the quarter ended June 30, 2025 and 3.01% for the quarter ended March 31, 2026.  

A credit loss expense of $208 thousand was recognized in the second quarter of 2026 as compared to $108 thousand in the second quarter of 2025. Net loan charge-offs for the quarter ended June 30, 2026 totaled $255 thousand compared to net loan charge-offs of $1.1 million for the quarter ended June 30, 2025. The credit loss expense in 2026 and 2025 was primarily due to charge-offs in the commercial loan portfolio.

Noninterest income for the second quarter of 2026 totaled $2.7 million as compared to $2.6 million in the second quarter of 2025, an increase of 2.3%.

Noninterest expense for the second quarter of 2026 totaled $11.2 million compared to $10.4 million recorded in the second quarter of 2025, an increase of 7.8%. The increase reflects higher professional fees, salaries and benefits. The increase in professional fees was primarily due to $300 thousand of consultant fees for certain contract negotiations in the second quarter of 2026. The consultant fees are expected to continue throughout 2026 as negotiations are in process.  The increase in salaries and benefits was driven by anticipated bonus payouts as Company performance thresholds are met, in addition to normal increases in salaries and benefits. The efficiency ratio was 58.52% for the second quarter of 2026 as compared to 64.34% in the second quarter of 2025. The efficiency ratio continues to improve as net interest margin increases.

Income tax expense for the second quarter of 2026 totaled $1.8 million compared to $1.1 million recorded in the second quarter of 2025. The effective tax rate was 23% and 20% for the quarters ended June 30, 2026 and 2025, respectively. The increase in income tax expense and effective tax rate was primarily due to higher net income and lower New Markets Tax Credits. The final year of tax credits was 2025 for a majority of the New Markets Tax Credit projects. 

Six Months 2026 Results:

For the six months ended June 30, 2026 loan interest income was $806 thousand higher than the first six months of 2025 and was primarily due to improved yield on the loan portfolio. Interest income from investment securities increased $2.6 million during this same period due to higher average balances and maturities reinvested at higher rates. Interest-bearing deposits with banks and federal funds sold interest income decreased by $485 thousand during this same period due to lower average balances. Deposit interest expense decreased $2.0 million during this same period due primarily to a decrease in market rates. Other borrowed funds interest expense decreased $551 thousand during the same period due primarily to reduced borrowings. The net interest income for the six months ended June 30, 2026 totaled $31.8 million, an increase of $5.4 million, or 20.6%, compared to the same period a year ago. These factors were the primary contributors to the Company’s net interest margin improving to 3.10% for the six months ended June 30, 2026 as compared to 2.59% for the six months ended June 30, 2025.  

A credit loss benefit of ($139) thousand was recognized in the six months ended June 30, 2026 as compared to a credit loss expense of $1.1 million in the six months ended June 30, 2025. Net loan charge-offs for the six months ended June 30, 2026 totaled $223 thousand compared to net loan charge-offs of $1.2 million for the six months ended June 30, 2025. The credit loss benefit in 2026 was primarily due to a decline in loan balances. The credit loss expense in 2025 was primarily due to charge-offs in the commercial loan portfolio.

Noninterest income for the six months ended June 30, 2026 totaled $5.5 million as compared to $5.2 million in the six months ended June 30, 2025, an increase of 5.8%. The increase is primarily due to an increase in wealth management income due to growth in assets under management and an increase in estate and trust fees.

Noninterest expense for the six months ended June 30, 2026 totaled $22.0 million compared to $20.6 million recorded in the six months ended June 30, 2025, an increase of 6.9%. The increase reflects higher professional fees, salaries and benefits. The increase in professional fees was primarily due to $600 thousand of consultant fees for certain contract negotiations in the six months ended June 30, 2026. The consultant fees are expected to continue throughout 2026 as negotiations are in process.  The increase in salaries and benefits was driven by anticipated bonus payouts as Company performance thresholds are met, in addition to normal increases in salaries and benefits. The efficiency ratio was 59.09% for the six months ended June 30, 2026 as compared to 65.34% in the six months ended June 30, 2025. The efficiency ratio continues to improve as net interest margin increases.

Income tax expense for the six months ended June 30, 2026 totaled $3.5 million compared to $1.9 million recorded in the six months ended June 30, 2025. The effective tax rate was 23% and 19% for the six months ended June 30, 2026 and 2025, respectively. The lower than expected tax rate in 2026 and 2025 was primarily due to tax-exempt interest income and New Markets Tax Credits. The increase in income tax expense and effective tax rate was primarily due to higher net income and lower New Markets Tax Credits. The final year of tax credits was 2025 for a majority of the New Markets Tax Credit projects. 

Balance Sheet Review:

As of June 30, 2026, total assets were $2.1 billion, an increase of $30.1 million, as compared to June 30, 2025. The increase in assets was primarily due to an increase in securities available-for-sale and interest-bearing deposits in financial institutions, partially offset by a decrease in loans receivable.

Securities available-for-sale as of June 30, 2026 increased to $695 million from $645 million as of June 30, 2025. The increase in securities available-for-sale is primarily due to purchases in excess of maturities and lower unrealized losses in the investment portfolio. The Company's investment portfolio had an expected duration of 3.2 years as of June 30, 2026. There are approximately $102 million of investments maturing within one year at an average yield of approximately 1.8%.

Net loans as of June 30, 2026 decreased to $1.25 billion as compared to $1.28 billion as of June 30, 2025, a decrease of 2.2%. The decrease was primarily due to payoffs in the commercial real estate portfolio and partially offset by an increase in the 1 to 4 family residential real estate portfolio. Substandard loans were $50.7 million and $23.5 million as of June 30, 2026 and 2025, respectively. Substandard-impaired loans were $19.1 million and $18.4 million as of June 30, 2026 and 2025, respectively. The increase in substandard loans is primarily due to one large relationship secured by 1-4 family residential properties and weakening in the multi-family portfolio as some loans are experiencing a decline in occupancy rates. The increase in substandard-impaired loans is primarily due to one agricultural operating loan relationship. Loans past due 30 days or more totaled $22.5 million as of June 30, 2026, compared to $11.8 million as of June 30, 2025. The increase is primarily related to one commercial real estate loan relationship that is being restructured and one agricultural operating loan relationship classified as substandard-impaired. There are approximately $361 million of loans maturing within one year at an average yield of approximately 5.5%.

The allowance for credit losses on June 30, 2026 totaled $17.3 million or 1.36% of loans, compared to $17.0 million, or 1.31% of loans, as of June 30, 2025. The increase in the allowance for credit losses is primarily due to an increase in specific reserves.

Deposits totaled $1.85 billion as of June 30, 2026, an increase of 1.8%, compared to $1.82 billion recorded as of June 30, 2025. The increase in deposits is primarily due to higher balances in retail and commercial checking accounts and partially offset by a decrease in time deposits. Securities sold under agreements to repurchase decreased to $30.9 million as of June 30, 2026, compared to $40.1 million as of June 30, 2025. Securities sold under agreements to repurchase and deposit balances fluctuate as customers’ liquidity needs vary and could be impacted by prevailing market interest rates, competition, and economic conditions.  Approximately 14% of deposits are tied to external indexes as of June 30, 2026. Deposit interest expense related to these deposits can be more volatile than other deposit products in a changing interest rate environment.

Other borrowings decreased to $16.5 million as of June 30, 2026 compared to $30.7 million as of June 30, 2025. The Company has continued to reduce borrowings as investments have matured and cash is redeployed.

The Company’s stockholders’ equity represented 10.0% of total assets as of June 30, 2026 with all of the Company’s six affiliate banks considered well-capitalized as defined by federal capital regulations. Total stockholders’ equity was $213.1 million as of June 30, 2026, compared to $193.0 million as of June 30, 2025. The increase in stockholders’ equity of $20.1 million was primarily the result of a decrease in unrealized losses on the investment portfolio and retention of net income in excess of dividends.

Share Repurchase Program

For the period April 1, 2026 through June 30, 2026, under the repurchase program that was announced in August 2025, which allowed for the repurchase of 200,000 shares of common stock, the Company did not repurchase any shares. There were 165,053 shares available to be repurchased under that repurchase program as of June 30, 2026.

Cash Dividend Announcement

On May 13, 2026, the Company declared a quarterly cash dividend on common stock, payable on June 15, 2026 to stockholders of record as of June 1, 2026, equal to $0.24 per share.

About Ames National Corporation

Ames National Corporation affiliate Iowa banks are First National Bank, Ames; Boone Bank & Trust Co., Boone; State Bank & Trust Co., Nevada; Reliance State Bank, Story City; United Bank & Trust Co., Marshalltown; and Iowa State Savings Bank, Creston, Iowa.

The Private Securities Litigation Reform Act of 1995 provides the Company with the opportunity to make cautionary statements regarding forward-looking statements contained in this News Release, including forward-looking statements concerning the Company’s future performance and asset quality. Forward-looking statements contained in this News Release are not historical facts and are based on management’s current beliefs, assumptions, predictions and expectations of future events, including the Company’s future performance, taking into account all information currently available to management. These beliefs, assumptions, predictions and expectations are subject to numerous risks and uncertainties and can change as a result of many possible events or factors, not all of which are known to management and many of which are beyond management’s control. If a change occurs, the Company’s business, financial condition, liquidity, results of operations, asset quality, plans and objectives may vary materially from those expressed in the forward-looking statements. Accordingly, investors are cautioned not to place undue reliance on such forward-looking statements. These statements are often, but not always, made through the use of words or phrases such as “anticipates,” “believes,” “can,” “could,” “may,” “predicts,” “potential,” “should,” “will,” “estimate,” “plans,” “projects,” “forecasts”, “continuing,” “ongoing,” “expects,” “views,” “intends” and similar words or phrases. The risks and uncertainties that may affect the Company’s future performance and asset quality include, but are not limited to, the following: national, regional and local economic conditions and the impact they may have on the Company and its customers; competitive products and pricing available in the marketplace; changes in credit and other risks posed by the Company’s loan and investment portfolios, including declines in commercial or residential real estate values or changes in the allowance for credit losses as dictated by new market conditions or regulatory requirements; changes in local, national and international economic conditions, including rising inflation rates; fiscal and monetary policies of the U.S. government; the imposition of tariffs and retaliatory tariffs; changes in governmental regulations affecting financial institutions (including regulatory fees and capital requirements); changes in prevailing interest rates; credit risk management and asset/liability management; the financial and securities markets; the availability of and cost associated with sources of liquidity; and other risks and uncertainties inherent in the Company’s business, including those discussed under the headings “Forward-Looking Statements and Business Risks” and “Risk Factors” in the Company’s Annual Report on Form 10-K for the year-ended December 31, 2025. Any forward-looking statements are qualified in their entirety by the foregoing risks and uncertainties and speak only as of the date on which such statements are made. The Company undertakes no obligation to revise or update such forward-looking statements to reflect events or circumstances after the date on which the statements are made or to reflect the occurrence of unanticipated events.

ASSET QUALITY (unaudited)

AVERAGE BALANCES AND INTEREST RATES (unaudited)

The following two tables are used to calculate the Company’s non-GAAP net interest margin on a fully taxable equivalent (FTE) basis. The first table includes the Company’s average assets and the related income to determine the average yield on earning assets. The second table includes the average liabilities and related expense to determine the average rate paid on interest-bearing liabilities. The net interest margin is equal to interest income less interest expense divided by average earning assets.

(1) Average loan balances include nonaccrual loans, if any. Interest income collected on nonaccrual loans has been included.

(2) Tax-exempt income has been adjusted to a tax-equivalent basis using an incremental tax rate of 21%.

(3) Net interest income (FTE) is a non-GAAP financial measure.

Non-GAAP Financial Measures

This report contains references to financial measures that are not defined in GAAP. Such non-GAAP financial measures include the Company’s presentation of net interest income and net interest margin on an FTE basis. Management believes these non-GAAP financial measures are widely used in the financial institutions industry and provide useful information to both management and investors to analyze and evaluate the Company’s financial performance. Limitations associated with non-GAAP financial measures include the risks that persons might disagree as to the appropriateness of items included in these measures and that different companies might calculate these measures differently. These non-GAAP disclosures should not be considered an alternative to the Company’s GAAP results. The following table reconciles the non-GAAP financial measures of net interest income and net interest margin on an FTE basis to GAAP (dollars in thousands).

(1) Computed on a tax-equivalent basis using an incremental federal income tax rate of 21 percent, adjusted to reflect the effect of the tax-exempt interest income associated with owning tax-exempt securities and loans.