Slide 1: Second Quarter 2026 Earnings Call
Second Quarter 2026 Earnings Call Nasdaq: ATNI August 6, 2026
Slide 2: Safe Harbor and Non-GAAP Financial Measures Definition
Safe Harbor and Non-GAAP Financial Measures Definition Cautionary Language Concerning Forward-Looking Statements This press release contains forward-looking statements relating to, among other matters, the Company’s future financial performance, business goals and objectives, and results of operatio
Slide 3: ATN International – 2Q26 At A Glance
ATN International – 2Q26 At A Glance Delivered growth in revenue, operating income and Adj. EBITDA1, with profitability outpacing sales growth; reflecting improving operating leverage US Segment International Segment Both segments Completed initial closing delivered positive on US Tower Portfolio sa
Slide 4: International Telecom Key Metrics: 2Q26
International Telecom Key Metrics: 2Q26 Established incumbency in residential fixed and mobile with opportunity to expand business share 273k 323k High-Speed Data Pre-Paid Subscribers Broadband Homes Passed -1% YoY = 70% +6% YoY Consumer Revenue 135k 64k High-Speed Data Post-Paid Subscribers Custome
Slide 5: US Telecom Key Metrics: 2Q26
US Telecom Key Metrics: 2Q26 Established position with businesses and carriers with opportunity to expand residential share 251k 74% High-Speed Data Homes Passed Business + Carrier Revenue +44% YoY = = 6k $150 million BEAD funding opportunity High-Speed Data Fixed Subscribers in our Alaska and -1% Y
Slide 6: ATN International – 2Q26 Financial Review
ATN International – 2Q26 Financial Review Sustained momentum across key financial metrics. Total Revenue: Operating Income: Total Adj. EBITDA1: Total Adj. EBITDA1: Margin: $184.5M $240M $49.7M 27.0% +2.0% YoY Includes $230M Gain from Initial +8.6% YoY +170 bps YoY Tower Sale Close Segment Snapshot I
Slide 7: International Telecom: YoY Revenue +1.4% and Adj. EBITDA +6.6%
International Telecom: YoY Revenue + 1.4% and Adj. EBITDA1 + 6.6% Consistent revenue streams with opportunity for growth Revenue Adj. EBITDA1 & Margin Revenue growth from fixed business, ancillary services and mobility $95 $97 $96 $96 100,000 $95 $100,000 Other 90,000 $90,000 Carrier Offset headwind
Slide 8: US Telecom: YoY Revenue +2.2% and Adj. EBITDA +4.5%
US Telecom: YoY Revenue +2.2% and Adj. EBITDA1 +4.5% Established carrier, government and business relationships Revenue Adj. EBITDA1 & Margin Revenue growth from 100,000 carrier and fixed business $86 $88 $87 $86 $88 90,000 $100,000 Other Offset headwinds 80,000 $90,000 created by construction $80,0
Slide 9: Strong Liquidity Profile Provides Financial Flexibility
Strong Liquidity Profile Provides Financial Flexibility Q2 2026 Earni We are well-capitalized and committed to managing debt levels and expanding operating cash flow ngs $268M in initial cash proceeds from US tower portfolio sale 350000 $332 Cash, cash equivalents Net Debt Leverage Ratio3 Undrawn re
Slide 10: Capital Expenditures
Capital Expenditures Continuing to focus on monetizing upgraded network assets ATN Funded CapEx - % of Total Revenues Return to normalized investment 22% 21% 15% 12% 10% spending levels (~10% to 15% of $250 revenue) $219 Leveraging available government $196 $200 funding to maximize network $168 $175
Slide 11: Capital Returned to Stockholders (2022 – 2Q26)
Capital Returned to Stockholders (2022 – 2Q26) Maintaining an uninterrupted quarterly dividend since 1999; Recent dividend increase of 5.5% Share Buybacks and Cash Dividends Demonstrating a strong commitment to shareholder returns, by distributing 30,000 $28 $63M in common dividends since 2022, high
Slide 12: Reaffirming Our 2026 Outlook
Reaffirming Our 2026 Outlook As of August 6, 2026 $183M - $193M Adj. EBITDA1 outlook includes $7M 2026 Adj. EBITDA1 Outlook impact related to the initial closing of tower sale Capital expenditure outlook is net of $105M - $115M reimbursable spend 2026 Capital Expenditures 1 For the Company’s full ye
Slide 13: Appendix
Appendix ATN International | © 2026. All rights reserved. Q2 2026 Earnings 13
Slide 14: Unlocking Inherent Value in Asset Portfolio: U.S. Tower Portfolio Sale
Unlocking Inherent Value in Asset Portfolio: U.S. Tower Portfolio Sale Proceeds from sale enhances liquidity and financial flexibility 214 $298M $268M Towers Under Agreement Negotiated Purchase Price Gross Cash Proceeds at Initial Close = $12M 25x Up to $30M Annualized Adj. EBITDA1 Impact Implied Ca
Slide 15: Reconciliation of Non-GAAP Measures – June 30, 2026
ATN International, Inc. Reconciliation of Non-GAAP Measures (in thousands) – For the three and six months ended June 30, 2026 For the three months ended June 30, 2026 is as follows: International Corporate and Telecom US Telecom Other * Total Operating income (loss) $ 21,917 $ 224,192 $ (6,378) $ 23
Slide 16: Reconciliation of Non-GAAP Measures – June 30, 2025
ATN International, Inc. Reconciliation of Non-GAAP Measures (in thousands) – For the three and six months ended June 30, 2025 For the three months ended June 30, 2025 is as follows: International Corporate and Telecom US Telecom Other * Total Operating income (loss) $ 16,221 $ (5,533) $ (10,455) $ 2
Slide 17: Non-GAAP Measures – Net Debt Ratio
ATN International, Inc. Non-GAAP Measures – Net Debt Ratio (in thousands) June 30, March 31, December 31, 2026 2026 2025 2024 2023 Current portion of long-term debt * $ 23,721 $ 21,623 $ 15,846 $ 8,226 $ 24,290 Long-term debt, net of current portion * 489,592 548,537 549,321 549,130 492,580 Total de