Acnb CorporationNASDAQ: ACNB

Fourth Quarter 2025 Press Release

· MarketScreener
Exhibit 99.1

‌PRESS RELEASE

FOR IMMEDIATE RELEASE

Contact: Jason H. Weber

EVP/Treasurer & Chief Financial Officer 717.339.5090

jweber@acnb.com

ACNB CORPORATION REPORTS FOURTH QUARTER AND RECORD 2025 FINANCIAL RESULTS

GETTYSBURG, PA, January 22, 2026 --- ACNB Corporation (NASDAQ: ACNB) ("ACNB" or the

"Corporation"), financial holding company for ACNB Bank and ACNB Insurance Services, Inc., announced net income of $10.8 million, or $1.04 diluted earnings per share, for the three months ended December 31, 2025 compared to net income of $6.6 million, or $0.77 diluted earnings per share, for the three months ended December 31, 2024 and compared to net income of $14.9 million, or $1.42 diluted earnings per share, for the three months ended September 30, 2025. Core net income1 was $14.0 million for the three months ended December 31, 2025 compared to core net income1 of $7.3 million for three months ended December 31, 2024 and core net income1 of $15.0 million for the three months ended September 30, 2025. The Corporation reported net income of $37.1 million, or $3.60 diluted earnings per share, for the twelve months ended December 31, 2025, an increase of $5.2 million compared to the twelve months ended December 31, 2024. Core net income1 was $52.4 million for the twelve months ended December 31, 2025, an increase of $19.0 million compared to core net income1 of $33.4 million for twelve months ended December 31, 2024.

ACNB's financial results for both the three and twelve month periods ended December 31, 2025 were impacted by the repositioning of the investment securities portfolio as announced on Form 8-K on December 5, 2025. ACNB completed a repositioning of the investment securities portfolio by selling $74.6 million in book value of available for sale investment securities for an after-tax loss of $2.8 million. In addition, the financial results for 2025 were impacted by the acquisition of Traditions Bancorp, Inc. which was completed on February 1, 2025 ("Acquisition"). The financial results for any periods ended prior to February 1, 2025 reflect ACNB on a standalone basis. As a result, ACNB's financial results for the three and twelve months ended December 31, 2025 may not be directly comparable to prior reported periods.

2025 Highlights

  • Fully taxable equivalent ("FTE") net interest margin was 4.23% for the twelve months ended December 31, 2025 compared to 3.79% for the twelve months ended December 31, 2024

    1 Non-GAAP financial measure. Please refer to the calculation on the page titled "Non-GAAP Reconciliation" at the end of this document.

  • Return on average assets was 1.16% and return on average equity was 9.44% for the twelve months ended December 31, 2025; core return on average assets1 was 1.64% and core return on average equity1 was 13.36% for the twelve months ended December 31, 2025

  • Total non-performing loans to total loans, net of unearned income, was 0.46% at December 31, 2025 compared to 0.40% at December 31, 2024

  • Net charge-offs to average loans outstanding were 0.01% for the twelve months ended December 31, 2025 compared to 0.02% for the twelve months ended December 31, 2024

  • Tangible common equity to tangible assets ratio1 of 10.60% at December 31, 2025 compared to 10.72% at December 31, 2024. The net unrealized loss on the available for sale securities portfolio was $24.2 million at December 31, 2025 compared to a net unrealized loss of $47.7 million at December 31, 2024

  • ACNB repurchased 264,393 shares of ACNB common stock in open market transactions for the twelve months ended December 31, 2025

"We are excited and pleased to share our 2025 financial results with our shareholders. This was a transformational year for ACNB Corporation with the successful acquisition and integration of our largest transaction to date in Traditions Bancorp, Inc. Thanks to the dedication of our entire team, we achieved our financial metrics that we originally presented at the time of the acquisition." said James P. Helt, ACNB Corporation President and Chief Executive Officer.

"Our continued focus on community banking principles centered on customer relationships has produced a record year of earnings for the Corporation. The Corporation's credit metrics and capital positions remain strong. In addition, the Corporation recognized a 21% increase in its common stock share price during the calendar year and increased its quarterly dividend by $0.06 per share or 19% from the fourth quarter of 2024 to the fourth quarter of 2025. The Corporation has increased the amount of cash dividends it has paid out per share each year since 2017, going from a quarterly cash dividend of $0.20 to $0.38 in that time, an increase of 90%."

Mr. Helt continued, "As we now turn our focus to 2026, we remain committed to our vision to be the financial services provider of choice in the communities we serve by building relationships and finding solutions for our customers. We believe that our diversified revenue stream with ACNB Insurance Services, ACNB Wealth Management and Traditions Mortgage provides a strong foundation for future growth, profitability and long-term shareholder value. We would like to express our gratitude for the continued support of our board of directors, shareholders, customers and employees."

Net Interest Income and Margin

Net interest income for the three months ended December 31, 2025 totaled $32.9 million, an increase of

$714 thousand from the three months ended September 30, 2025. The FTE net interest margin for the three months ended December 31, 2025 was 4.36%, a 9 basis points increase from the three months ended September 30, 2025. The increase in FTE net interest margin from the three months ended September 30, 2025 was driven primarily by a 5 basis points increase in earning asset yields as new loans and securities funded were at higher rates than those that paid off or matured during the quarter and a 6 basis points decrease in the cost of interest-bearing deposits as a result of lower rates on higher cost deposits from the Acquisition and lower overall market rates during the three months ended December 31, 2025. The accretion impact of acquisition accounting

1 Non-GAAP financial measure. Please refer to the calculation on the page titled "Non-GAAP Reconciliation" at the end of this document.

adjustments on loans and deposits from the Acquisition was $1.9 million and $2.1 million for the three months ended December 31, 2025 and the three months ended September 30, 2025, respectively.

Net interest income for the three months ended December 31, 2025 increased $11.7 million from the three months ended December 31, 2024. The FTE net interest margin for the three months ended December 31, 2025 increased 55 basis points from the three months ended December 31, 2024. The following discussion of increases in average balances and yields compared to the same period of the prior year was driven primarily by the Acquisition. For the three months ended December 31, 2025, total average loans increased $687.1 million compared to the three months ended December 31, 2024. The FTE yield on total loans was 6.33% for the three months ended December 31, 2025, an increase of 72 basis points compared to the three months ended December 31, 2024. For the three months ended December 31, 2025, total average interest-bearing deposits increased $555.2 million from the three months ended December 31, 2024. The average rate paid on interest-bearing deposits was 1.36% for the three months ended December 31, 2025, an increase of 40 basis points from the three months ended December 31, 2024. For the three months ended December 31, 2025, total average noninterest-bearing demand deposits increased $128.0 million from the three months ended December 31, 2024.

Net interest income for the twelve months ended December 31, 2025 totaled $123.1 million, an increase of $39.5 million from $83.6 million for the twelve months ended December 31, 2024. The FTE net interest margin for the twelve months ended December 31, 2025 was 4.23%, a 44 basis points increase from 3.79% for the twelve months ended December 31, 2024. The following discussion of increases in average balances and yields compared to the prior year was driven primarily by the Acquisition. Total average loans increased

$635.8 million compared to the twelve months ended December 31, 2024. The FTE yield on total loans was 6.25%, an increase of 73 basis points compared to the twelve months ended December 31, 2024. Total average interest-bearing deposits increased $542.1 million from the twelve months ended December 31, 2024. The average rate paid on interest-bearing deposits was 1.41% for the twelve months ended December 31, 2025, an increase of 58 basis points from the twelve months ended December 31, 2024. Total average noninterest-bearing demand deposits increased $87.5 million from the twelve months ended December 31, 2024. The accretion impact of acquisition accounting adjustments on loans and deposits from the Acquisition was $7.7 million for the twelve months ended December 31, 2025.

Noninterest Income

Noninterest income for the three months ended December 31, 2025 was $4.3 million, a decrease of $4.1 million and $1.5 million from the three months ended September 30, 2025 and the three months ended December 31, 2024, respectively. The decrease in both periods was driven primarily by the repositioning of the investment securities portfolio, which generated a $3.6 million pre-tax loss on the sale of investment securities, and insurance commissions which were $1.9 million for the three months ended December 31, 2025, a decrease of $663 thousand and $223 thousand from the three months ended September 30, 2025 and the three months ended December 31, 2024, respectively. The decrease in insurance commissions from the three months ended September 30, 2025 was driven primarily by seasonality while the decrease from the three months ended December 31, 2024 was driven primarily by policy cancellations of two customers. Gain from mortgage loans held for sale for the three months ended December 31, 2025 was $1.4 million, a decrease of $90 thousand from the three months ended September 30, 2025 driven primarily by seasonality and an increase of $1.3 million from the three months ended December 31, 2024 driven primarily by the Acquisition. Wealth management income was $1.2 million for the three months ended December 31, 2025, a $75 thousand increase from the three months ended September 30, 2025 and a $193 thousand increase from the three months ended December 31, 2024. The increase in wealth management income from the three months ended September 30, 2025 was driven primarily by higher estate administration income while the increase from the three months ended December 31,

2024 was driven primarily by growth of fee-based assets under management/administration, and an increase in estate administration income and brokerage commissions generated by higher overall sales activity.

Earnings on investment in bank-owned life insurance was $735 thousand for the three months ended December 31, 2025, a $84 thousand increase from the three months ended September 30, 2025 and a $229 thousand increase from the three months ended December 31, 2024. The increase in earnings on investment in bank-owned life insurance from the three months ended September 30, 2025 was driven primarily by the purchase of new policies in the third quarter of 2025 while the increase from the three months ended December 31, 2024 was driven primarily the purchase of new policies in the third quarter of 2025 and the Acquisition.

Noninterest income, excluding net gains (losses) on sales or calls of securities, for the twelve months ended December 31, 2025 was $32.1 million, an increase of $7.5 million from the twelve months ended December 31, 2024. The increase was driven primarily by a $5.0 million increase in gain from mortgage loans held for sale, a $697 thousand increase in service charges on deposits and $614 thousand higher earnings on investment in bank-owned life insurance, which were primarily driven by the Acquisition.

Noninterest Expense

Noninterest expense for the three months ended December 31, 2025 increased $1.1 million from the three months ended September 30, 2025. Merger-related expenses totaled $575 thousand for the three months ended December 31, 2025 compared to $169 thousand for the three months ended September 30, 2025. Other increased $621 thousand for the three months ended December 31, 2025 compared to the three months ended September 30, 2025. The increase was driven primarily by a write-off of legacy accounts receivable at the insurance subsidiary of $475 thousand. Professional services increased $164 thousand for the three months ended December 31, 2025 compared to three months ended September 30, 2025. The increase was driven primarily by internal bank initiatives and the Acquisition. Salaries and employee benefits expense for the three months ended December 31, 2025 decreased $157 thousand compared to three months ended September 30, 2025. The decrease was driven primarily by lower health insurance expense.

Noninterest expense for the three months ended December 31, 2025 increased $5.1 million from the three months ended December 31, 2024. The increase was driven primarily by the Acquisition. Salaries and employee benefits expense increased $2.7 million for the three months ended December 31, 2025 compared to the three months ended December 31, 2024. The increase was driven primarily by additional employees attributable to the Acquisition, merit increases, and higher mortgage commissions. Other increased $1.2 million for the three months ended December 31, 2025 compared to the three months ended December 31, 2024. The increase was driven primarily by the Acquisition, the write-off of legacy accounts receivable at the insurance subsidiary and higher internet banking services.

Noninterest expense for the twelve months ended December 31, 2025 increased $29.8 million compared to the twelve months ended December 31, 2024. The increase was driven primarily by the Acquisition. Salaries and employee benefits expense increased $9.9 million during the twelve months ended December 31, 2025 compared to the twelve months ended December 31, 2024. The increase was driven primarily by additional employees attributable to the Acquisition, merit increases, and higher mortgage commissions. Merger-related expense totaled $10.7 million for the twelve months ended December 31, 2025 compared to $2.0 million for the twelve months ended December 31, 2024. Intangible assets amortization increased $3.0 million and net occupancy increased $1.0 million for the twelve months ended December 31, 2025 compared to the twelve months ended December 31, 2024. The increases were a result of the Acquisition. Equipment expense increased

$2.2 million driven primarily by the Acquisition and the implementation of new additional products into our core processing system. Other increased $3.9 million for the twelve months ended December 31, 2025

compared to the twelve months ended December 31, 2024. The increase was driven primarily by the Acquisition, higher internet banking services and contributions.

Loans and Asset Quality

Total loans outstanding were $2.33 billion at December 31, 2025, a decrease of $6.1 million from September 30, 2025 and an increase of $647.6 million from December 31, 2024. The decrease compared to September 30, 2025 was across commercial and industrial, real estate construction and consumer portfolios and was partially offset by increases in commercial real estate, residential mortgage and home equity lines of credit portfolios. The increase compared to December 31, 2024 was spread across all loan categories and was driven primarily by the Acquisition. The allowance for credit losses was $23.7 million at December 31, 2025, an increase of $12 thousand compared to September 30, 2025 and an increase of $6.4 million compared to December 31, 2024. The increase compared to September 30, 2025 was driven primarily by changes to economic forecast assumptions within the CECL model. The increase compared to December 31, 2024 was driven primarily by the Acquisition. Total non-performing loans to total loans, net of unearned income, increased from 0.40% at December 31, 2024 to 0.46% at December 31, 2025. The increase was driven primarily by three unrelated relationships in the commercial real estate and residential mortgage portfolios. The bank does not believe the increase is indicative of a general weakness in the overall loan portfolio. The allowance for unfunded commitments was $1.8 million at December 31, 2025, an increase of $447 thousand compared to September 30, 2025 and an increase of $437 thousand compared to December 31, 2024. The increase compared to both periods was driven primarily by the concentration of unfunded commitments to higher loss rate segments.

Deposits and Borrowings

Deposits totaled $2.45 billion at December 31, 2025, a decrease of $15.7 million from September 30, 2025 and an increase of $657.7 million from December 31, 2024. Total interest-bearing deposits were $1.90 billion at December 31, 2025, an increase of $12.1 million from September 30, 2025 and an increase of $555.3 million from December 31, 2024. Money markets, included in interest-bearing deposits, decreased $7.6 million since September 30, 2025 and increased $234.1 million since December 31, 2024. The decrease in money market deposits from September 30, 2025 was driven primarily by lower balances of higher cost money markets from the Acquisition and the increase from December 31, 2024 was a result of the Acquisition. Time deposits increased $6.5 million and $179.9 million since September 30, 2025 and December 31, 2024, respectively. Included in total deposits at December 31, 2025 were $553.9 million of noninterest-bearing deposits, which decreased $27.8 million from September 30, 2025 driven primarily by seasonal decreases in commercial account balances and increased $102.4 million from December 31, 2024 driven primarily by the Acquisition.

Total borrowings were $320.1 million at December 31, 2025, a decrease of $15.7 million compared to September 30, 2025 and an increase of $49.0 million compared to December 31, 2024. Total borrowings decreased from September 30, 2025 driven primarily by a decrease in seasonal repurchase agreement balances. Total borrowings increased from December 31, 2024 driven primarily by short-term FHLB borrowings for general balance sheet management.

Stockholders' Equity

Total stockholders' equity was $420.0 million at December 31, 2025 compared to $408.6 million at September 30, 2025 and $303.3 million at December 31, 2024. The increase at December 31, 2025 compared to September 30, 2025 was driven primarily by net income of $10.8 million and a $6.4 million change in unrealized gains in available for sale investment securities slightly offset by dividends paid of $3.9 million and common stock repurchased of $2.5 million for the three months ended December 31, 2025. The increase at

December 31, 2025 compared to December 31, 2024 was driven primarily by the common stock equity issued in the Acquisition, net income of $37.1 million, and a $19.5 million change in unrealized gains in available for sale investment securities slightly offset by dividends paid of $14.4 million and common stock repurchased of

$11.2 million for the twelve months ended December 31, 2025. Tangible book value1 per share was $32.22,

$30.87 and $29.51 at December 31, 2025, September 30, 2025 and December 31, 2024, respectively.

1 Non-GAAP financial measure. Please refer to the calculation on the page titled "Non-GAAP Reconciliation" at the end of this document.

About ACNB Corporation

ACNB Corporation, headquartered in Gettysburg, PA, is the independent $3.23 billion financial holding company for the wholly-owned subsidiaries of ACNB Bank, Gettysburg, PA, including its operating divisions Traditions Bank and Traditions Mortgage, and ACNB Insurance Services, Inc., Westminster, MD. Originally founded in 1857, ACNB Bank serves its marketplace with banking and wealth management services, including trust and retail brokerage, via a network of 33 community banking offices and one loan office located in the Pennsylvania counties of Adams, Cumberland, Franklin, Lancaster and York, and the Maryland counties of Baltimore, Carroll and Frederick. ACNB Insurance Services, Inc. is a full-service insurance agency with licenses in 46 states. The agency offers a broad range of property, casualty, health, life and disability insurance serving personal and commercial clients through office locations in Westminster, MD and Gettysburg, PA. For more information regarding ACNB Corporation and its subsidiaries, please visit investor.acnb.com.

# # #

SAFE HARBOR AND FORWARD-LOOKING STATEMENTS - Should there be a material subsequent event prior to the filing of the Quarterly Report on Form 10-Q with the Securities and Exchange Commission, the financial information reported in this press release is subject to change to reflect the subsequent event. In addition to historical information, this press release may contain forward-looking statements. Examples of forward-looking statements include, but are not limited to, (a) projections or statements regarding future earnings, expenses, net interest income, other income, earnings or loss per share, asset mix and quality, growth prospects, capital structure, and other financial terms, (b) statements of plans and objectives of Management or the Board of Directors, and (c) statements of assumptions, such as economic conditions in the Corporation's market areas. Such forward-looking statements can be identified by the use of forward-looking terminology such as "believes", "expects", "may", "intends", "will", "should", "anticipates", or the negative of any of the foregoing or other variations thereon or comparable terminology, or by discussion of strategy. Forward-looking statements are subject to certain risks and uncertainties such as national, regional and local economic conditions, competitive factors, and regulatory limitations. Actual results may differ materially from those projected in the forward-looking statements. Such risks, uncertainties, and other factors that could cause actual results and experience to differ from those projected include, but are not limited to, the following: short-term and long-term effects of inflation and rising costs on the Corporation, customers and economy; banking instability caused by bank failures and financial uncertainty of various banks which may adversely impact the Corporation and its securities and loan values, deposit stability, capital adequacy, financial condition, operations, liquidity, and results of operations; effects of governmental and fiscal policies, as well as legislative and regulatory changes; effects of new laws and regulations (including laws and regulations concerning taxes, banking, securities and insurance) and their application with which the Corporation and its subsidiaries must comply; impacts of the capital and liquidity requirements of the Basel III standards; effects of changes in accounting policies and practices, as may be adopted by the regulatory agencies, as well as the Financial Accounting Standards Board and other accounting standard setters; ineffectiveness of the business strategy due to changes in current or future market conditions; future actions or inactions of the United States government, including the effects of short-term and long-term federal budget and tax negotiations and a failure to increase the government debt limit or a prolonged shutdown of the federal government; effects of economic conditions particularly with regard to the negative impact of any pandemic, epidemic or health-related crisis and the responses thereto on the operations of the Corporation and current customers, specifically the effect of the economy on loan customers' ability to repay loans; effects of competition, and of changes in laws and regulations on competition, including industry consolidation and development of competing financial products and services; inflation, securities market and monetary fluctuations; risks of changes in interest rates on the level and composition of deposits, loan demand, and the values of loan collateral, securities, and interest rate protection agreements, as well as interest rate risks; difficulties in acquisitions and integrating and operating acquired business operations, including information technology difficulties; challenges in establishing and maintaining operations in new markets; effects of technology changes; effects of general economic conditions and more specifically in the Corporation's market areas; failure of assumptions underlying the establishment of reserves for credit losses and estimations of values of collateral and various financial assets and liabilities; acts of war or terrorism or geopolitical instability; disruption of credit and equity markets; ability to manage current levels of impaired assets; loss of certain key officers; ability to maintain the value and image of the Corporation's brand and protect the Corporation's intellectual property rights; continued relationships with major customers; and, potential impacts to the Corporation from continually evolving cybersecurity and other technological risks and attacks, including additional costs, reputational damage, regulatory penalties, and financial losses. Management considers subsequent events occurring after the balance sheet date for matters which may require adjustment to, or disclosure in, the consolidated financial statements. The review period for subsequent events extends up to and including the filing date of the Corporation's consolidated financial statements when filed with the SEC. Accordingly, the financial information in this announcement is subject to change. We caution readers not to place undue reliance on these forward-looking statements. They only reflect Management's analysis as of this date. The Corporation does not revise or update these forward-looking statements to reflect events or changed circumstances. Please carefully review the risk factors described in other documents the Corporation files from time to time with the SEC, including the Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q. Please also carefully review any Current Reports on Form 8-K filed by the Corporation with the SEC.

ACNB #2026-02

January 22, 2026

‌ACNB Corporation Financial Highlights Selected Financial Data by Respective Quarter End (Unaudited)

(Dollars in thousands, except per share data)

December 31, 2025

September 30, 2025

June 30, 2025

March 31, 2025

December 31, 2024

BALANCE SHEET DATA

Total assets

$ 3,228,126

$ 3,250,838

$ 3,259,528

$ 3,270,041

$ 2,394,830

Investment securities

531,131

526,570

520,758

521,306

459,472

Total loans, net of unearned income

2,330,514

2,336,605

2,341,816

2,322,209

1,682,910

Allowance for credit losses

(23,672)

(23,660)

(24,353)

(24,646)

(17,280)

Deposits

2,450,185

2,465,896

2,524,541

2,540,009

1,792,501

Allowance for unfunded commitments

1,831

1,384

1,529

1,883

1,394

Borrowings

320,116

335,833

298,395

299,531

271,159

Stockholders' equity

419,974

408,642

395,151

386,883

303,273

INCOME STATEMENT DATA

Interest and dividend income

$ 42,856

$ 42,490

$ 41,576

$ 36,290

$ 27,381

Interest expense

10,005

10,353

10,564

9,200

6,269

Net interest income

32,851

32,137

31,012

27,090

21,112

Provision for (reversal of) credit losses

106

(584)

(228)

5,968

249

Provision for (reversal of) unfunded commitments

447

(145)

(354)

(480)

44

Net interest income after provisions for (reversal of) credit losses and unfunded commitments

32,298

32,866

31,594

21,602

20,819

Noninterest income

4,332

8,411

8,682

7,184

5,803

Noninterest expenses

23,453

22,361

25,366

29,335

18,388

Income (loss) before income taxes

13,177

18,916

14,910

(549)

8,234

Income tax expense (benefit)

2,372

4,046

3,262

(277)

1,639

Net income (loss)

$ 10,805

$ 14,870

$ 11,648

$ (272)

$ 6,595

PROFITABILITY RATIOS

Total loans, net of unearned income to deposits

95.12 %

94.76 %

92.76 %

91.43 %

93.89 %

Return on average assets (annualized)

1.30

1.80

1.43

(0.04)

1.08

Return on average equity (annualized)

10.31

14.66

11.96

(0.31)

8.57

Efficiency ratio1

53.39

51.96

56.21

60.13

63.83

FTE Net interest margin

4.36

4.27

4.21

4.07

3.81

Yield on average earning assets

5.69

5.64

5.64

5.45

4.93

Yield on investment securities

3.17

3.03

2.95

2.91

2.58

Yield on total loans

6.33

6.29

6.29

6.08

5.61

Cost of funds

1.40

1.45

1.50

1.45

1.19

PER SHARE DATA

Diluted earnings (loss) per share

$ 1.04

$ 1.42

$ 1.11

$ (0.03)

$ 0.77

Cash dividends paid per share

0.38

0.34

0.34

0.32

0.32

Tangible book value per share1

32.22

30.87

29.30

28.23

29.51

CAPITAL RATIOS2

Tier 1 leverage ratio

11.40 %

11.22 %

10.97 %

11.81 %

12.52 %

Common equity tier 1 ratio

14.74

14.45

13.96

13.65

16.27

Tier 1 risk based capital ratio

14.96

14.67

14.17

13.86

16.56

Total risk based capital ratio

16.54

16.22

15.75

15.45

18.36

CREDIT QUALITY

Net charge-offs to average loans outstanding (annualized)

0.02 %

0.02 %

0.01 %

0.01 %

0.04 %

Total non-performing loans to total loans, net of unearned income3

0.46

0.43

0.43

0.43

0.40

Total non-performing assets to total assets4

0.33

0.31

0.31

0.32

0.30

Allowance for credit losses to total loans, net of unearned income

1.02

1.01

1.04

1.06

1.03

1 Non-GAAP financial measure. Please refer to the calculation on the page titled "Non-GAAP Reconciliation" at the end of this document.

2 Regulatory capital ratios as of December 31, 2025 are preliminary.

3 Non-performing loans consists of loans on nonaccrual status and loans greater than 90 days past due and still accruing interest.

4 Non-performing assets consists of non-performing loans and foreclosed assets held for resale.

‌Consolidated Statements of Condition (Unaudited)

(Dollars in thousands, except per share data)

December 31, 2025

September 30, 2025

December 31, 2024

ASSETS

Cash and due from banks

$ 20,611

$ 30,500

$ 16,352

Interest-bearing deposits with banks

45,037

71,639

30,910

Total Cash and Cash Equivalents

65,648

102,139

47,262

Equity securities with readily determinable fair values

949

945

919

Investment securities available for sale, at estimated fair value

466,894

462,217

393,975

Investment securities held to maturity, at amortized cost (fair value

$57,537, $56,932 and $56,924)

63,288

63,408

64,578

Loans held for sale

28,170

16,850

426

Total loans, net of unearned income

2,330,514

2,336,605

1,682,910

Less: Allowance for credit losses

(23,672)

(23,660)

(17,280)

Loans, net

2,306,842

2,312,945

1,665,630

Premises and equipment, net

30,648

31,107

25,454

Right of use asset

4,155

4,403

2,663

Restricted investment in bank stocks

14,237

14,462

10,853

Investment in bank-owned life insurance

105,840

96,755

81,850

Investments in low-income housing partnerships

751

783

877

Goodwill

64,449

64,449

44,185

Intangible assets, net

22,435

23,565

7,838

Assets held for sale

275

275

-

Foreclosed assets held for resale

19

32

438

Other assets

53,526

56,503

47,882

Total Assets

$ 3,228,126

$ 3,250,838

$ 2,394,830

LIABILITIES AND STOCKHOLDERS' EQUITY

Deposits:

Noninterest-bearing

$ 553,855

$ 581,697

$ 451,503

Interest-bearing

1,896,330

1,884,199

1,340,998

Total Deposits

2,450,185

2,465,896

1,792,501

Short-term borrowings

64,740

80,468

15,826

Long-term borrowings

255,376

255,365

255,333

Lease liability

4,451

4,696

2,764

Allowance for unfunded commitments

1,831

1,384

1,394

Other liabilities

31,569

34,387

23,739

Total Liabilities

2,808,152

2,842,196

2,091,557

Stockholders' Equity:

Preferred Stock, $2.50 par value, 20,000,000 shares authorized;

no shares outstanding at December 31, 2025, September 30, 2025 and

December 31, 2024

-

-

-

Common stock, $2.50 par value, 20,000,000 shares authorized; 11,028,152, 11,023,573, and 8,945,293 shares issued; 10,372,251,

10,423,015, and 8,553,785 shares outstanding at December 31, 2025,

September 30, 2025 and December 31, 2024, respectively

27,564

27,555

22,357

Treasury stock, at cost, 655,901, 600,558, and 391,508 at December 31,

2025, September 30, 2025, and December 31, 2024, respectively

(22,367)

(19,875)

(11,203)

Additional paid-in capital

179,658

179,130

99,163

Retained earnings

257,293

250,410

234,624

Accumulated other comprehensive loss

(22,174)

(28,578)

(41,668)

Total Stockholders' Equity

419,974

408,642

303,273

Total Liabilities and Stockholders' Equity

$ 3,228,126

$ 3,250,838

$ 2,394,830

‌Consolidated Income Statements (Unaudited)

Three Months Ended Years Ended December 31,

December 31,

September 30,

December 31,

(Dollars in thousands, except per share data)

2025

2025

2024

2025

2024

INTEREST AND DIVIDEND INCOME

Loans, including fees:

Taxable

$ 37,293

$ 36,961

$ 23,294

$ 142,485

$ 90,547

Tax-exempt

343

324

289

1,276

1,232

Investment securities:

Taxable

3,580

3,430

2,555

13,195

10,748

Tax-exempt

297

281

284

1,149

1,136

Dividends

320

332

231

1,299

970

Other

1,023

1,162

728

3,808

2,832

Total Interest and Dividend Income

42,856

42,490

27,381

163,212

107,465

INTEREST EXPENSE

Deposits

6,547

6,872

3,279

26,699

11,194

Short-term borrowings

491

513

12

1,639

859

Long-term borrowings

2,967

2,968

2,978

11,784

11,801

Total Interest Expense

10,005

10,353

6,269

40,122

23,854

Net Interest Income

32,851

32,137

21,112

123,090

83,611

Provision for (reversal of) credit losses

106

(584)

249

5,262

(2,437)

Provision for (reversal of) unfunded commitments

447

(145)

44

(532)

(326)

Net Interest Income after Provisions for (Reversal of) Credit Losses and Unfunded Commitments

32,298

32,866

20,819

118,360

86,374

NONINTEREST INCOME

Insurance commissions

1,882

2,545

2,105

9,482

9,754

Gain from mortgage loans held for sale

1,373

1,463

107

5,266

301

Service charges on deposits

1,282

1,286

1,084

4,841

4,144

Wealth management

1,200

1,125

1,007

4,475

4,226

ATM debit card charges

923

904

815

3,563

3,303

Earnings on investment in bank-owned life insurance

735

651

506

2,593

1,979

Gain on life insurance proceeds

-

-

-

285

-

Net (losses) gains on sales or calls of investment securities

(3,557)

-

-

(3,535)

69

Net gains (losses) on equity securities

4

9

(28)

30

(9)

Other

490

428

207

1,609

963

Total Noninterest Income

4,332

8,411

5,803

28,609

24,730

NONINTEREST EXPENSES

Salaries and employee benefits

13,034

13,191

10,318

52,779

42,929

Equipment

2,356

2,302

2,324

9,477

7,321

Net occupancy

1,241

1,217

1,096

5,177

4,162

Professional services

752

588

586

2,660

2,140

Other tax

539

561

360

1,847

1,446

FDIC and regulatory

458

457

337

1,751

1,425

Intangible assets amortization

1,130

1,129

304

4,257

1,244

Merger-related

575

169

885

10,718

2,045

Other

3,368

2,747

2,178

11,849

7,973

Total Noninterest Expenses

23,453

22,361

18,388

100,515

70,685

Income Before Income Taxes

13,177

18,916

8,234

46,454

40,419

Income taxes

2,372

4,046

1,639

9,403

8,573

Net Income

$ 10,805

$ 14,870

$ 6,595

$ 37,051

$ 31,846

PER SHARE DATA

Basic earnings

$ 1.04

$ 1.43

$ 0.78

$ 3.61

$ 3.75

Diluted earnings

$ 1.04

$ 1.42

$ 0.77

$ 3.60

$ 3.73

Weighted average shares basic

10,351,613

10,419,581

8,511,253

10,259,179

8,503,473

Weighted average shares diluted

10,386,137

10,455,461

8,549,691

10,290,148

8,536,965

‌Three Months Ended

Three Months Ended

Three Months Ended

Three Months Ended

Three Months Ended

December 31, 2025

September 30, 2025

June 30, 2025

March 31, 2025

December 31, 2024

(Dollars in thousands)

ASSETS

Average

Balance Interest1

Yield/ Rate

Average

Balance Interest1

Yield/ Rate

Average

Balance Interest1

Yield/ Rate

Average

Balance Interest1

Yield/ Rate

Average

Balance Interest1

Yield/ Rate

Loans:

Taxable

$2,305,296

$ 37,293

6.42 %

$2,298,054

$ 36,961

6.38 %

$2,296,429

$ 36,555

6.38 %

$2,080,231

$ 31,676

6.18 %

$1,619,245

$ 23,294

5.72 %

Tax-exempt

58,740

434

2.93

58,587

410

2.78

58,903

401

2.73

57,969

370

2.59

57,683

366

2.52

Total Loans2

2,364,036

37,727

6.33

2,356,641

37,371

6.29

2,355,332

36,956

6.29

2,138,200

32,046

6.08

1,676,928

23,660

5.61

Investment Securities:

Taxable

480,987

3,900

3.22

485,309

3,762

3.08

482,933

3,590

2.98

447,986

3,242

2.93

431,338

2,786

2.57

Tax-exempt

54,518

376

2.74

53,165

356

2.66

54,261

358

2.65

54,659

365

2.71

54,453

359

2.62

Total Investments3

535,505

4,276

3.17

538,474

4,118

3.03

537,194

3,948

2.95

502,645

3,607

2.91

485,791

3,145

2.58

Interest-bearing deposits with banks

101,846

1,023

3.99

103,290

1,162

4.46

77,348

831

4.31

73,181

792

4.39

60,104

728

4.82

Total Earning Assets

3,001,387

43,026

5.69

2,998,405

42,651

5.64

2,969,874

41,735

5.64

2,714,026

36,445

5.45

2,222,823

27,533

4.93

Cash and due from banks

25,686

26,709

25,610

20,603

20,413

Premises and equipment

31,297

31,514

32,019

29,903

25,679

Other assets

250,508

245,899

255,624

224,522

181,180

Allowance for credit losses

(23,646)

(24,312)

(24,615)

(19,939)

(17,153)

Total Assets

$3,285,232

$3,278,215

$3,258,512

$2,969,115

$2,432,942

LIABILITIES

Interest-bearing demand deposits

$ 633,593

$ 545

0.34 %

$ 616,565

$ 570

0.37 %

$ 612,812

$ 514

0.34 %

$ 573,341

$ 524

0.37 %

$ 519,833

$ 511

0.39 %

Money markets

491,932

2,322

1.87

510,655

2,530

1.97

536,755

2,706

2.02

447,297

1,984

1.80

251,781

747

1.18

Savings deposits

331,309

27

0.03

335,083

26

0.03

342,327

27

0.03

331,103

27

0.03

315,512

34

0.04

Time deposits

454,083

3,653

3.19

454,625

3,746

3.27

473,589

4,037

3.42

410,749

3,461

3.42

268,559

1,987

2.94

Total Interest-Bearing Deposits

1,910,917

6,547

1.36

1,916,928

6,872

1.42

1,965,483

7,284

1.49

1,762,490

5,996

1.38

1,355,685

3,279

0.96

Short-term borrowings

69,326

491

2.81

70,389

513

2.89

44,515

341

3.07

38,721

294

3.08

23,087

12

0.21

Long-term borrowings

255,369

2,967

4.61

255,358

2,968

4.61

255,347

2,939

4.62

257,558

2,910

4.58

255,326

2,978

4.64

Total Borrowings

324,695

3,458

4.23

325,747

3,481

4.24

299,862

3,280

4.39

296,279

3,204

4.39

278,413

2,990

4.27

Total Interest-Bearing Liabilities

2,235,612

10,005

1.78

2,242,675

10,353

1.83

2,265,345

10,564

1.87

2,058,769

9,200

1.81

1,634,098

6,269

1.53

Noninterest-bearing demand deposits

592,956

593,800

563,321

512,966

464,949

Other liabilities

40,963

39,397

39,271

36,934

27,887

Stockholders' Equity

415,701

402,343

390,575

360,446

306,008

Total Liabilities and Stockholders' Equity

$3,285,232

$3,278,215

$3,258,512

$2,969,115

$2,432,942

Taxable Equivalent Net Interest Income

33,021

32,298

31,171

27,245

21,264

Taxable Equivalent Adjustment

(170)

(161)

(159)

(155)

(152)

Net Interest Income

$ 32,851

$ 32,137

$ 31,012

$ 27,090

$ 21,112

Cost of Funds

1.40%

1.45 %

1.50 %

1.45 %

1.19%

FTE Net Interest Margin

4.36%

4.27 %

4.21 %

4.07 %

3.81%

1 Income on interest-earning assets has been computed on a fully taxable equivalent (FTE) basis using the 21% federal income tax statutory rate.

2 Average balances include non-accrual loans and are net of unearned income.

3 Average balances of investment securities is computed at fair value.

‌Year Ended December 31, 2025 Year Ended December 31, 2024

(Dollars in thousands)

Average

Balance Interest1

Yield/ Rate

Average

Balance Interest1

Yield/ Rate

ASSETS

Loans:

Taxable

$ 2,245,727

$ 142,485

6.34 %

$ 1,605,976

$ 90,547

5.64 %

Tax-exempt

58,552

1,615

2.76

62,532

1,559

2.49

Total Loans2

2,304,279

144,100

6.25

1,668,508

92,106

5.52

Investment Securities:

Taxable

474,424

14,494

3.06

445,531

11,718

2.63

Tax-exempt

54,148

1,454

2.69

54,596

1,438

2.63

Total Investments3

528,572

15,948

3.02

500,127

13,156

2.63

Interest-bearing deposits with banks

89,034

3,808

4.28

53,482

2,832

5.30

Total Earning Assets

2,921,885

163,856

5.61

2,222,117

108,094

4.86

Cash and due from banks

24,672

20,920

Premises and equipment

31,188

25,873

Other assets

244,251

185,037

Allowance for credit losses

(23,141)

(18,589)

Total Assets

$ 3,198,855

$ 2,435,358

LIABILITIES

Interest-bearing demand deposits

$ 609,263

$ 2,153

0.35 %

$ 516,033

$ 1,603

0.31 %

Money markets

496,820

9,542

1.92

248,733

2,588

1.04

Savings deposits

334,956

107

0.03

324,034

118

0.04

Time deposits

448,398

14,897

3.32

258,560

6,885

2.66

Total Interest-Bearing Deposits

1,889,437

26,699

1.41

1,347,360

11,194

0.83

Short-term borrowings

55,862

1,639

2.93

36,492

859

2.35

Long-term borrowings

255,901

11,784

4.60

253,671

11,801

4.65

Total Borrowings

311,763

13,423

4.31

290,163

12,660

4.36

Total Interest-Bearing Liabilities

2,201,200

40,122

1.82

1,637,523

23,854

1.46

Noninterest-bearing demand deposits

566,057

478,534

Other liabilities

39,153

28,276

Stockholders' Equity

392,445

291,025

Total Liabilities and Stockholders' Equity

$ 3,198,855

$ 2,435,358

Taxable Equivalent Net Interest Income

123,734

84,240

Taxable Equivalent Adjustment

(644)

(629)

Net Interest Income

$ 123,090

$ 83,611

Cost of Funds

1.45 %

1.13 %

FTE Net Interest Margin

4.23 %

3.79 %

1 Income on interest-earning assets has been computed on a fully taxable equivalent basis (FTE) using the 21% federal income tax statutory rate.

2 Average balances include non-accrual loans and are net of unearned income.

3 Average balances of investment securities is computed at fair value.

‌Loan and Deposit Detail by Type Variance

(Dollars in thousands) December 31, 2025 September 30, 2025 December 31, 2024

December 2025 vs. September 2025 December 2025 vs. December 2024

Loans

Commercial real estate

$ 1,273,813

$ 1,263,896

$ 969,514

$ 9,917

$ 304,299

Residential mortgage

599,051

593,283

401,950

5,768

197,101

Commercial and industrial

205,452

218,364

140,906

(12,912)

64,546

Home equity lines of credit

127,341

125,839

85,685

1,502

41,656

Real estate construction

116,680

126,451

76,773

(9,771)

39,907

Consumer

10,140

10,144

9,318

(4)

822

Gross loans

2,332,477

2,337,977

1,684,146

(5,500)

648,331

Unearned income

(1,963)

(1,372)

(1,236)

(591)

(727)

Total loans, net of unearned income

$ 2,330,514

$ 2,336,605

$ 1,682,910

$ (6,091)

$ 647,604

Variance

(Dollars in thousands) December 31, 2025 September 30, 2025 December 31, 2024

December 2025 vs. September 2025 December 2025 vs. December 2024

Deposits

Noninterest-bearing demand deposits

$ 553,855

$ 581,697

$ 451,503

$ (27,842)

$ 102,352

Interest-bearing demand deposits

623,620

614,130

505,096

9,490

118,524

Money market

485,808

493,430

251,667

(7,622)

234,141

Savings

333,973

330,200

311,207

3,773

22,766

Total demand and savings

1,997,256

2,019,457

1,519,473

(22,201)

477,783

Time

452,929

446,439

273,028

6,490

179,901

Total deposits

$ 2,450,185

$ 2,465,896

$ 1,792,501

$ (15,711)

$ 657,684

‌Non-GAAP Reconciliation Note: The Corporation has presented the following non-GAAP financial measures because it believes that these measures provide useful and comparative information to assess trends in the Corporation's results of operations and financial condition. These non-GAAP financial measures are frequently used by securities analysts, investors and other interested parties in the evaluation of companies in the Corporation's industry. Investors should recognize that the Corporation's presentation of these non-GAAP financial measures might not be comparable to similarly-titled measures of other corporations. These non-GAAP financial measures should not be considered a substitute for GAAP basis measures, and the Corporation strongly encourages a review of its condensed consolidated financial statements in their entirety.

Three Months Ended

(Dollars in thousands, except per share data)

December 31, 2025

September 30, 2025

June 30, 2025

March 31, 2025

December 31, 2024

Tangible book value per share

Stockholders' equity

$ 419,974

$ 408,642

$ 395,151

$ 386,883

$ 303,273

Less: Goodwill and intangible assets

(86,884)

(88,014)

(89,143)

(90,284)

(52,023)

Tangible common stockholders' equity (numerator)

$ 333,090

$ 320,628

$ 306,008

$ 296,599

$ 251,250

Shares outstanding, less unvested shares, end of period (denominator)

10,337,757

10,387,135

10,442,269

10,506,822

8,515,347

Tangible book value per share

$ 32.22

$ 30.87

$ 29.30

$ 28.23

$ 29.51

Tangible common equity to tangible assets (TCE/TA Ratio)

Tangible common stockholders' equity (numerator)

$ 333,090

$ 320,628

$ 306,008

$ 296,599

$ 251,250

Total assets

$ 3,228,126

$ 3,250,838

$ 3,259,528

$ 3,270,041

$ 2,394,830

Less: Goodwill and intangible assets

(86,884)

(88,014)

(89,143)

(90,284)

(52,023)

Total tangible assets (denominator)

$ 3,141,242

$ 3,162,824

$ 3,170,385

$ 3,179,757

$ 2,342,807

Tangible common equity to tangible assets

10.60 %

10.14 %

9.65 %

9.33 %

10.72 %

Efficiency Ratio

Noninterest expense

$ 23,453

$ 22,361

$ 25,366

$ 29,335

$ 18,388

Less: Intangible amortization

1,130

1,129

1,141

857

304

Less: Merger-related expense

575

169

1,943

8,031

885

Noninterest expense (numerator)

$ 21,748

$ 21,063

$ 22,282

$ 20,447

$ 17,199

Net interest income

$ 32,851

$ 32,137

$ 31,012

$ 27,090

$ 21,112

Plus: Total noninterest income

4,332

8,411

8,682

7,184

5,803

Less: Gain on life insurance proceeds

-

-

31

254

-

Less: Net (losses) gains on sales or calls of securities

(3,557)

-

22

-

-

Less: Net gains (losses) on equity securities

4

9

3

14

(28)

Total revenue (denominator)

$ 40,736

$ 40,539

$ 39,638

$ 34,006

$ 26,943

Efficiency ratio

53.39 %

51.96 %

56.21 %

60.13 %

63.83 %

ACNB Corporation Press Release/2025 Fourth Quarter Financial Results January 22, 2026 Page 15 of 15 ‌Non-GAAP Reconciliation, continued Three Months Ended Years Ended December 31,

(Dollars in thousands)

December 31,

2025

September 30,

2025

December 31,

2024

2025

2024

Core return on average assets

Net income

$ 10,805 $ 14,870 $ 6,595 $ 37,051 $ 31,846

Initial ACL for non-purchased credit deteriorated loans, net of taxes

- - - 4,257 -

Loss on securities repositioning, net of taxes

2,768 - - 2,768 -

Merger-related expense, net of taxes

447 131 685 8,339 1,582

Core net income (numerator)

$ 14,020 $ 15,001 $ 7,280 $ 52,415 $ 33,428

Average assets (denominator)

$ 3,285,232 $ 3,278,215 $ 2,432,942 $ 3,198,855 $ 2,435,358

Core return on average assets

1.69 %

1.82 %

1.19 %

1.64 %

1.37 %

Core return on average equity

Core net income (numerator)

$ 14,020

$ 15,001

$ 7,280

$ 52,415

$ 33,428

Average equity (denominator)

$ 415,701

$ 402,343

$ 306,008

$ 392,445

$ 291,025

Core return on average equity

13.38 %

14.79 %

9.46 %

13.36 %

11.49 %

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