Slide 1: ACNB Corporation Investor Presentation Third Quarter of 2025
A C N B C O R P O R A T I O N Investor Presentation Third Quarter of 2025 Nasdaq: ACNB investor.acnb.com
Slide 2: Important Information
2 | Investor Presentation Important Information • ACNB Corporation (Nasdaq: ACNB) (“ACNB” or the “Corporation”) is the financial holding company for ACNB Bank (“ACNB Bank” or the “Bank”) and ACNB Insurance Services, Inc. (“ACNB Insurance Services,” “ACNB Insurance” or “Insurance Services”). • This p
Slide 3: Corporate Profile
3 | Investor Presentation Corporate Profile Mid-Atlantic commercial financial holding company for ACNB Bank and ACNB Insurance Services, which serve businesses and communities in Pennsylvania and Maryland, including those in the Gettysburg region, its surrounding counties, and the Greater Baltimore
Slide 4: Investment highlights: management, loans, deposits, noninterest income, expenses
4 | Investor Presentation Experienced Management Team • Proven management team with proven track record • Approximately 260 years of combined experience Commercially Focused Loan Portfolio • Commercial loans/total loans* ratio of approximately 68% • Average commercial loan yield of 6.28%* • Attracti
Slide 5: Experienced Management Team
5 | Investor Presentation Experienced Management Team James P. Helt President & Chief Executive Officer 36 years In financial services 17 years At ACNB Mark Blacksten EVP, Maryland Market President 35 years In financial services 2 years At ACNB Brett D. Fulk EVP, Chief Strategy Officer 34 years In f
Slide 6: Commercially Focused Loan Portfolio
6 | Investor Presentation 9% 54% 5% 32% C&I, ex PPP CRE, Multifamily & Farm C&D Other ~68% Commercial† Commercially Focused Loan Portfolio • 242.9% CRE loans/total RBC* • 33.87% construction loans/total RBC* • 34.4% owner-occupied/total CRE, multifamily and farm • 6.28% average yield on commercial l
Slide 7: Stable and Low-Cost Deposit Base
7 | Investor Presentation Stable and Low-Cost Deposit Base • 7.1% of bank deposits associated with top 20 unrelated relationships • ~79.5% of all bank deposits FDIC insured and/or collateralized o Average deposit account balance <$25,000 • ~60.8% deposit market share in Adams County and strong marke
Slide 8: Commitment to Noninterest Income to Diversify Revenue
8 | Investor Presentation Commitment to Noninterest Income to Diversify Revenue • Noninterest income increased year-over-year driven primarily by the Traditions acquisition • Insurance commissions decreased linked quarter driven primarily by lower contingent commission income and decreased year-over
Slide 9: Fee-Generating Offerings
9 | Investor Presentation Fee-Generating Offerings All dollar amounts in thousands. * Income from fiduciary, investment management and brokerage activities. ** Non-GAAP financial measure ; Refer to the calculation on the pages titled “Reconciliation of Non-GAAP Measures” at the end of this presentat
Slide 10: Focus on Expense Management
10 | Investor Presentation Focus on Expense Management * Non-GAAP financial measure ; Refer to the calculation on the pages titled “Reconciliation of Non-GAAP Measures” at the end of this presentation. • Year-over-year increase in expenses driven primarily by the acquisition of Traditions • Merger-r
Slide 11: Branch Network Productivity
11 | Investor Presentation Branch Network Productivity • ~18% reduction in branch network from year-end 2020 to year-end 2024 o Net reduction of six branches from year-end 2020 to year-end 2024 • Traditions operated eight branches; In April 2025, ACNB closed two branches • Opened one new branch in 2
Slide 12: Strong Profitability
12 | Investor Presentation $0.84 $0.77 $1.02 $1.11 $1.42 3Q24 4Q24 1Q25 2Q25 3Q25 Diluted Earnings Per Share 9.63% 8.57% 11.23% 11.96% 14.66% 3Q24 4Q24 1Q25 2Q25 3Q25 Return on Average Equity 1.17% 1.08% 1.36% 1.43% 1.80% 3Q24 4Q24 1Q25 2Q25 3Q25 Return on Average Assets Strong Profitability • 3Q24,
Slide 13: Actively Managing Strong Capital Position
13 | Investor Presentation Actively Managing Strong Capital Position • Practices reflect ACNB’s ongoing and long-term commitment to maximizing shareholder value o Repurchased 61,586 common shares in the third quarter of 2025 o Increased dividend to $0.38 in 4Q25 from $0.32 in 4Q24 • Disciplined acqu
Slide 14: Ample Liquidity Position
14 | Investor Presentation Ample Liquidity Position • Actively monitoring, managing and projecting our liquidity needs to minimize our liquidity risk o Liquidity monitored daily • Stable, durable and relationship-based core deposits continue to be ACNB Bank’s primary source of liquidity o 94.8% loan
Slide 15: Stable Asset Quality
15 | Investor Presentation Stable Asset Quality • Committed to sound credit risk management, including conservative and disciplined underwriting practices, timely credit administration process and proactive customer relationship management • Non-performing loans increased in 3Q24 driven primarily by
Slide 16: Bank Director Ranking and Forbes Best in State Banks
16 | Investor Presentation Bank Director Ranking Banking 2025 - #9 2024 - #4 2023 - #17 2022 - #94 2025 - #20 2024 - #11 Forbes Best in State Banks 2025 - #3 in PA
Slide 17: Appendix
17 | Investor Presentation Appendix
Slide 18: Diversified Loan Portfolio
18 | Investor Presentation 9% 54% 5% 5% 26% 0% $786,255 $821,691 $898,708 $970,280 $1,264,768 $161,025 $178,905 $148,833 $137,747 $215,601 $52,450 $83,283 $84,340 $76,886 $126,471 $92,763 $84,142 $91,034 $86,537 $127,575 $348,868 $359,378 $395,482 $402,732 $609,030 $18,541 $1,470,620 $1,538,733 $1,6
Slide 19: CRE Breakdown
19 | Investor Presentation Apartments 8.4% Hotel/Motel/B&B 8.4% Office Complex 10.7% Rental Units - Retail/Mixed Use/Commercial 15.1% Other Real Estate 4.9% Strip Mall 4.7% Warehouse 7.4% Restaurant 3.3% Farming 4.9% Manufacturers 3.8% Non-Profit 3.7% Storage Units 3.6% Service Industry 6.2% Other 1
Slide 20: Reconciliation of Non-GAAP Measures
20 | Investor Presentation This presentation contains financial measures determined by methods other than in accordance with accounting principles generally accepted in the United States (GAAP). The Corporation has presented the following non-GAAP financial measures because it believes that these me
Slide 21: Reconciliation of Non-GAAP Measures
21 | Investor Presentation Reconciliation of Non-GAAP Measures 21 Source: Company data from public filings and internal sources. $ in 000's, except per share amounts 9/30/2024 12/31/2024 3/31/2025 6/30/2025 9/30/2025 Tangible book value per share Stockholders' equity $306,755 $303,273 $386,883 $395,
Slide 22: Reconciliation of Non-GAAP Measures
22 | Investor Presentation Reconciliation of Non-GAAP Measures 22 Source: Company data from public filings and internal sources. $ in 000's 9/30/2024 12/31/2024 3/31/2025 6/30/2025 9/30/2025 Efficiency Ratio Non-interest expense $18,244 $18,388 $29,335 $25,366 $22,361 Less: intangible amortization $
Slide 23: Reconciliation of Non-GAAP Measures
23 | Investor Presentation Reconciliation of Non-GAAP Measures 23 Source: Company data from public filings and internal sources. $ in 000's, except per share amounts Core return on average assets 3/31/2025 Net loss ($272) Plus: Merger-related expense, net of taxes $6,214 Plus: Provision for credit l
Slide 24: ACNB Corporation Investor Relations Contact
24 | Investor Presentation ACNB Corporation Investor Relations Contact Jason H. Weber Executive Vice President, Treasurer & Chief Financial Officer ACNB Corporation 16 Lincoln Square Gettysburg, PA 17325 investor.relations@acnb.com 717-339-5090 Investor Presentation