ATN International: Q1 2026 Earnings Presentation Final

First Quarter 2026 Earnings Call

May 7, 2026

First Quarter 2026 Earnings Call Agenda

• Key Metrics and Revenue Composition

• Financial Results

• 2026 Full-Year Outlook

  3 ATN International | Q1 2026 Earnings Presentation

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  Key Performance Indicators (Q1 2026)

  Strategy Driving YoY Gains Across Key Metrics / Favorable Mix

  Hig h - S p eed B r oa d b a n d

  I n ter n a ti on a l M ob i l i ty

  ~523k

  High-Speed Broadband Homes Passed

  +24% YoY

  ~62k

  Post-Paid Subscribers

  +5% YoY

  ~143k

  High-Speed Customers

  +3% YoY

  ~324k

  Pre-Paid Subscribers

  -1% YoY

  Notes:

  • Data presented may differ from prior reported quarter to reflect more accurate data and/or changes in calculation methodology and process.

  • High-Speed Broadband is defined as download speeds ≥ 100 Mbps.

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  ATN International | Q1 2026 Earnings Presentation

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  Financial Highlights and Drivers

  Q1 2026 Total Revenue Up 2% YoY

  Q1 2026 Revenue by Product

  Key Drivers:

  • Fixed Revenue was flat, which included

    21%

    4%

    14%

    an expected subsidy loss

    • Carrier Services revenues rose 9%

      $182M

      61%

      • Postpaid Mobility revenue growth offset prepaid losses

      • Other Revenue up 18% as ancillary services expanded

Mobility Fixed Carrier Services All Other

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Consolidated Financials

Q1 2026 Revenue and Adjusted EBITDA1 - Consolidated

Consolidated

Total Revenue Adjusted EBITDA1

Key Drivers:

+2%

$179 $182

$44

+10%

$49

• Total revenue growth of 2% driven by:

  • Fixed Business

  • Carrier Services

  • Other / Ancillary Services

• Growth increases to 3% when rebased

  for subsidy loss and construction revenue

• Adj. EBITDA1 up 10%; Continued focus on cost discipline and margin expansion

  1Q 2025 1Q 2026 1Q 2025 1Q 2026

  (Dollars in millions)

  1. Adjusted EBITDA is defined as Operating income (loss) before depreciation and amortization expense, transaction-related charges, restructuring and reorganization expenses, the loss on dispositions, transfers, and contingent consideration, and non-cash stock-based compensation.

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  International Telecom Segment Financials

  Q1 2026 Revenue and Adjusted EBITDA1 - International Telecom

  International Telecom

  Total Revenue Adjusted EBITDA1

  Key Drivers:

  +2%

  $94 $96

  +6%

  $32 $34

• Total revenue growth driven by:

  • Carrier Services

  • Fixed Business

  • Post-paid Consumer Mobility

  • Other / Ancillary Services

• Adjusted EBITDA1 growth driven by higher revenues and cost containment and efficiency initiatives

1Q 2025 1Q 2026 1Q 2025 1Q 2026

(Dollars in millions)

1. Adjusted EBITDA is defined as Operating income (loss) before depreciation and amortization expense, transaction-related charges, restructuring and reorganization expenses, the loss on dispositions, transfers, and contingent consideration, and non-cash stock-based compensation

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US Telecom Segment Financials

Q1 2026 Revenue and Adjusted EBITDA1 - US Telecom

US Telecom

Total Revenue Adjusted EBITDA1

+2%

+11%

Key Drivers:

• Revenue growth increase of 3% when normalized for construction revenue

  $85 $86

  $18

  $19

  • Total revenue growth driven by:

    • Carrier Services

    • Fixed Business

  • Adjusted EBITDA1 growth driven by higher revenues and cost discipline

    1Q 2025 1Q 2026 1Q 2025 1Q 2026

    (Dollars in millions)

    1. Adjusted EBITDA is defined as Operating income (loss) before depreciation and amortization expense, transaction-related charges, restructuring and reorganization expenses, the loss on dispositions, transfers and contingent consideration, and non-cash stock-based compensation.

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    Balance Sheet Update

    Strong Liquidity Provides Financial Flexibility

    Approximately 75% of debt is at the subsidiary level and non-recourse to the parent

    $21M

    Q1 FY26

    CapEx Spend

    $105M-$115M

    FY26 CapEx Outlook

As of March 31, 2026

1. Cash position includes cash, cash equivalents, and restricted cash

2. Debt position excludes customer receivable credit facility

3. Undrawn revolver capacity includes the ATN, OneCommunications (Guyana), and Alaska Communications revolving credit facilities

4. Net Debt is defined as total debt less cash and cash equivalents and restricted cash, and Net Debt Ratio is defined as Net Debt divided by the trailing four quarters ended total Adjusted EBITDA at the measurement date

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ATN Reiterates Full Year 2026 Outlook

Adjusted EBITDA1 ▪ $190M to $200M, excluding the impact of the pending U.S.

tower portfolio sale2

Capital Expenditures ▪ $105M to $115M (net of reimbursable expenditures)

1 For the Company's full year 2026 outlook dated March 4, 2026, for Adjusted EBITDA, the Company is not able to provide, without unreasonable effort, the most directly comparable GAAP financial measures, or reconciliations to such GAAP financial measures, on a forward-looking basis.

2 As previously disclosed, on February 11, 2026, certain subsidiaries of the Company entered into that certain Purchase and Sale Agreement with EIP Holdings, IV, LLC, an affiliate of Everest Infrastructure Partners, Inc., to sell approximately 214 tower portfolio sites in the southwest U.S. for up to $297 million in cash consideration (the "U.S. tower portfolio sale").

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