Exhibit 99.1

NEWS RELEASE

Atlantic Tele-Network, Inc. Reports

Fourth Quarter and Full Year 2012 Results

Fourth Quarter 2012 Financial Highlights:

·                  Total revenues were $184.4 million

·                  Adjusted EBITDA increased 15% from the fourth quarter of 2011 to $47.0 million

·                  Operating income, inclusive of gain on asset sale of $11.6 million, more than doubled to $28.6 million

·                  Net income attributable to ATN’s stockholders was $13.1 million, or $0.84 per diluted share, compared to $4.1 million, or $0.27 per share in the prior year

·                  Cash and cash equivalents totaled approximately $136.6 million

Full Year 2012 Financial Highlights:

·                  Total revenues were $741.4 million

·                  Adjusted EBITDA increased 23% to $197.6 million

·                  Operating income increased 80% to $99.5 million

·                  Net income attributable to ATN’s stockholders was $48.9 million, or $3.13 per diluted share compared to $1.41 last year

·                  Net cash provided by operating activities was $187.5 million, up 41% year-over-year

·                  Cash dividends paid amounted to $18.5 million

Beverly, MA (February 21, 2013) — Atlantic Tele-Network, Inc. (NASDAQ: ATNI), today reported results for the fourth quarter and year ended December 31, 2012.

Fourth Quarter/Full Year 2012 Financial Results

“The fourth quarter was very much in line with the year, both of which were marked by increasing profitability and operating cash flow with a decline in U.S. retail wireless revenues offsetting solid growth in international wireless revenues,” said Michael Prior, Chief Executive Officer.  “Increased operating profitability in both the quarter and full year 2012 was driven primarily by the elimination of duplicate expenses and other cost reduction initiatives in our U.S. wireless business.  Both revenue and profitability for the year were also positively impacted by improvements in several of our international wireless properties, particularly Bermuda and the U.S. Virgin Islands.

“Our wireless subscriber metrics in the fourth quarter had mixed results.  On the positive side, our international wireless subscriber base continued to increase and we repeated the pattern of recent quarters with solid prepaid subscriber growth domestically.  On the negative side, we continue to struggle with the operating challenges from the dispersed, rural geography of our U.S. postpaid customer base, which we discussed recently in

announcing our agreement to sell our main U.S. retail wireless business.  Within that context, our team has done an excellent job of maintaining domestic ARPU and focusing on delivering high quality service to our customers.

“In the fourth quarter, U.S. wholesale revenues remained consistent with the prior year.  Throughout the year, our roaming partners continued to overbuild, which was largely offset by growth in data volume per site.  Wireline revenue was flat for the quarter and the year.  However, that masks a more complex story as rapidly rising data and wholesale capacity revenue and U.S. enterprise sales volume are offsetting declines in traditional voice revenue and severe pricing pressure in the U.S. enterprise segment,” Mr. Prior added.

Total revenues for the fourth quarter were $184.4 million, 1% above the $182.9 million reported for 2011.   The year-over-year increase resulted from higher international wireless revenues and equipment sales, which were largely offset by lower U.S. retail wireless service revenues.

Adjusted EBITDA(1) for the 2012 fourth quarter was $47.0 million, 15% above the $40.7 million reported in 2011, led by our U.S. Wireless and Island Wireless segments, where adjusted EBITDA increased by $5.4 million and $2.6 million, respectively.  Operating income for the fourth quarter of 2012 was $28.6 million, a 161% increase over the $10.9 million reported in last year’s fourth quarter.  Operating income in the 2012 fourth quarter included an $11.6 million gain on the sale of spectrum and related assets used in the Company’s U.S. wholesale wireless business.  Net income attributable to ATN’s stockholders was $13.1 million, or $0.84 per diluted share, more than triple the $4.1 million, or $0.27 per diluted share, reported in last year’s fourth quarter.

Total revenues for the full year 2012 were $741.4 million compared to $759.2 million for 2011, a decline of 2%.  Adjusted EBITDA was $197.6 million, up 23% year-over-year; operating income increased 80% to $99.5 million; and net income attributable to ATN’s stockholders was $48.9 million, or $3.13 per diluted share, more than double the $21.8 million, or $1.41 per diluted share, reported for 2011.

Commenting on full year results, Mr. Prior said, “Amidst a challenging operating environment, we continued to build the value of our assets in 2012, reporting record operating cash flow of $187.5 million and further strengthening our balance sheet.  This performance supports our strategy of investing for the long term with a keen focus on delivering steady cash returns on our investments.”

Recent Corporate Developments

·                  On January 22, 2013, the Company announced a definitive agreement to sell its U.S. retail wireless business operating under the Alltel name to AT&T.  Under the terms of the agreement, AT&T will purchase the operations in an all-cash transaction valued at approximately $780 million.  The acquisition, which is currently expected to be completed in the second half of 2013, is subject to customary closing conditions, including completion of the required reviews and approvals by the Department of Justice and Federal Communications Commission.  This business is reported as part of the U.S. Wireless segment, and for the fourth quarter of 2012 it generated revenues, operating income and adjusted EBITDA of approximately $114.7 million, $7.1 million and $21.9 million, respectively.  For the year, revenues, operating income and adjusted EBITDA were approximately $464.4 million, $41.4 million and $98.5 million, respectively.

·                  On December 7, 2012, the Company declared a quarterly dividend of $0.25 per share, payable on December 31, 2012, on all common shares outstanding to stockholders of record as of December 20, 2012.  The quarterly dividend was raised 8.7% to $0.25 per share on September 14, 2012, which represented the Company’s 14th consecutive annual dividend increase.

Fourth Quarter 2012 Operating Highlights

U.S. Wireless Service Revenues

U.S. wireless service revenues include voice and data service revenues from the Company’s prepaid and postpaid retail operations as well as its wholesale roaming operations. Total service revenues from the U.S. wireless businesses were $131.8 million compared to $134.4 million in the fourth quarter of 2011, a decrease of 2%.

(1)  See Table 5 for reconciliation of Net Income to Adjusted EBITDA.

U.S. retail wireless service revenues were $83.7 million, 3% below the $86.0 million reported in the 2011 fourth quarter.  This decrease was due to net postpaid subscriber attrition that the Company experienced throughout 2012. At the end of the 2012 fourth quarter, the Company had approximately 588,000 U.S. retail subscribers, an increase of 1% from the approximately 580,000 subscribers the Company had at the end of last year’s fourth quarter. Despite a higher percentage of contract expirations, this quarter marked the third consecutive quarter in which the Company experienced net subscriber additions in its U.S. retail wireless business, driven by growth in prepaid subscribers.  The 2013 first quarter will be another period of higher-than-average contract expirations, which is likely to result in further decreases in postpaid subscribers.  Of the total subscribers at December 31, 2012, approximately 425,000 were postpaid subscribers and approximately 163,000 were prepaid subscribers. Additional operating data on the Company’s U.S. retail wireless business can be found in Table 4 of this release.

U.S. wholesale wireless revenues were $48.1 million, a decrease of less than 1% from the $48.4 million reported in the fourth quarter of 2011. Consistent with industry trends, voice traffic continued to decline in comparison with the prior year, mainly offset by increased data usage. Roaming revenue, including data roaming revenue, for certain of the Company’s coverage areas is currently expected to decline over time as roaming partners increase their data network coverage and capacity in those areas.  Data revenues accounted for 52% of wholesale wireless revenues for the quarter, compared to 46% a year earlier. As previously disclosed, one of the Company’s roaming partners exercised a call option in July 2012 to repurchase spectrum and related cell sites in the midwestern U.S. for approximately $15.6 million. The transaction was completed late in the fourth quarter of 2012, resulting in a gain on disposition of long-lived assets of approximately $11.6 million. For the year ended December 31, 2012, the Company’s wholesale revenue from these network assets amounted to approximately $16.0 million.

International Wireless Revenues

International wireless revenues include retail and wholesale voice and data wireless revenues from international operations in Bermuda and the Caribbean. International wireless revenues were $21.3 million, an increase of 10% over the $19.4 million reported in the fourth quarter of 2011. At the end of 2012, the Company had approximately 333,000 international wireless subscribers of which 88% were prepaid subscribers.  This is an increase of approximately 3% from approximately 322,000 wireless subscribers at the end of 2011.  Each of the Company’s international subsidiaries experienced moderate year-over-year growth in wireless revenues in the fourth quarter of 2012.

Wireline Revenues

Wireline revenues are primarily generated by the Company’s wireline operations in Guyana, including international telephone calls into and out of that country, and by its integrated voice and data and wholesale transport operations in New England and New York State. Wireline revenues were $21.3 million, a 2% decline from the $21.7 million recorded in the fourth quarter of 2011, primarily resulting from lower wireline revenues in Guyana.

Reportable Operating Segments

The Company has four reportable segments: (i) U.S. Wireless; (ii) International Integrated Telephony, which operates in Guyana; (iii) Island Wireless, which generates its revenues and has its assets located in Bermuda and the Caribbean (including the U.S. Virgin Islands); and (iv) U.S. Wireline. Financial data on our reportable operating segments for the three months ended December 31, 2012 are as follows (in thousands):

(1) Reconciling items are comprised of corporate general and administrative costs and acquisition-related charges.

Balance Sheet and Cash Flow Highlights

Cash and cash equivalents at December 31, 2012 were $136.6 million. Long-term debt was $250.9 million.  Net cash provided by operating activities was $50.0 million for the fourth quarter and $187.5 million for full year 2012.  Capital expenditures were $26.9 million for the fourth quarter and $77.4 million for full year 2012, lower than expected because of a delay in certain capital projects. The Company expects full year 2013 capital expenditures in the range of $95 to $105 million, assuming the Alltel sale transaction proceeds as anticipated in 2013.

Conference Call Information

Atlantic Tele-Network will host a conference call on Friday, February 22, 2013 at 9:00 a.m. Eastern Time (ET) to discuss its 2012 fourth quarter and full year results. The call will be hosted by Michael Prior, President and Chief Executive Officer, and Justin Benincasa, Chief Financial Officer. The dial-in numbers are US/Canada: (877) 734-4582 and International: (678) 905-9376, conference ID 98681966. A replay of the call will be available at ir.atni.com beginning at 1:00 p.m. (ET) on February 22, 2013.

About Atlantic Tele-Network

Atlantic Tele-Network, Inc. (NASDAQ:ATNI), headquartered in Beverly, Massachusetts, provides telecommunications services to rural, niche and other under-served markets and geographies in the United States, Bermuda and the Caribbean. Through our operating subsidiaries, we provide both wireless and wireline connectivity to residential and business customers, including a range of mobile wireless solutions, local exchange services and broadband internet services and are the owner and operator of terrestrial and submarine fiber optic transport systems. For more information, please visit www.atni.com.

Cautionary Language Concerning Forward Looking Statements

This press release contains forward-looking statements relating to, among other matters, our future financial performance and results of operations; our proposed sale of our Alltel operations and the expected timetable for the completion of such sale; the competitive environment in our key markets, demand for our services and industry trends; the outcome of regulatory matters; our continued access to the credit and capital markets; the pace of our network expansion and improvement, including our level of estimated future capital expenditures and our realization of the benefits of these investments; and management’s plans and strategy for the future. These forward-looking statements are based on estimates, projections, beliefs, and assumptions and are not guarantees of future events or results.  Actual future events and results could differ materially from the events and results indicated in these statements as a result of many factors, including, among others, (1)  the general performance of our operations, including operating margins, wholesale revenues, and the future retention and turnover of our subscriber base; (2) our ability to receive requisite regulatory consents and approvals and satisfy other conditions needed to complete our proposed sale of our Alltel operations; (3) our ability to maintain favorable roaming arrangements; (4) increased competition; (5) economic, political and other risks facing our foreign operations; (6) the loss of certain FCC and other licenses, USF funds or other regulatory changes affecting our businesses; (7) rapid and significant technological changes in the telecommunications industry; (8) any loss of any key members of management; (9) our reliance on a limited number of key suppliers and vendors for timely supply of equipment and services relating to our network infrastructure and retail wireless business; (10) the adequacy and expansion capabilities of our network capacity and customer service system to support our customer growth; (11) the occurrence of severe weather and natural catastrophes; (12) our continued access to capital and credit markets; and (13) our ability to realize the value that we believe exists in our businesses. These and other additional factors that may cause actual future events and results to differ materially from the events and results indicated in the forward-looking statements above are set forth more fully under Item 1A “Risk Factors” of the Company’s Annual Report on Form 10-K for the year ended December 31, 2011, filed with the SEC on March 15, 2012 and in the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2012, filed with the SEC on May 10, 2012. The Company undertakes no obligation to update these forward-looking statements to reflect actual results, changes in assumptions or changes in other factors that may affect such forward-looking statements.

Use of Non-GAAP Financial Measures

In addition to financial measures prepared in accordance with generally accepted accounting principles (GAAP), this news release also contains non-GAAP financial measures. Specifically, ATN has presented Adjusted EBITDA and ARPU measures. Adjusted EBITDA is defined as net income attributable to ATN stockholders before interest, taxes, depreciation and amortization, acquisition related charges, impairment of intangible assets, gain on disposition of long-lived assets, other income or expense, net income attributable to non-controlling interests, and equity in earnings of unconsolidated affiliates. ARPU, or monthly average revenue per subscriber/unit, is computed by dividing total retail service revenues per period by the weighted average number of subscribers with service during that period, and then dividing that result by the number of months in the period.  The Company believes that the inclusion of these non-GAAP financial measures helps investors to gain a meaningful understanding of the Company’s core operating results and enhance comparing such performance with prior periods, without the distortion of the recent increased expenses associated with the Alltel transaction. ATN’s management uses these non-GAAP measures, in addition to GAAP financial measures, as the basis for measuring our core operating performance and comparing such performance to that of prior periods. The non-GAAP financial measures included in this news release are not meant to be considered superior to or a substitute for results of operations prepared in accordance with GAAP. Reconciliations of the non-GAAP financial measures used in this news release to the most directly comparable GAAP financial measures are set forth in the text of, and the accompanying tables to, this press release.

Table 1

ATLANTIC TELE-NETWORK, INC.

Unaudited Condensed Consolidated Balance Sheets

(in Thousands)

Table 2

ATLANTIC TELE-NETWORK, INC.

Unaudited Condensed Consolidated Statements of Operations

(in Thousands, Except per Share Data)

(a)     Certain reclassifications have been made to prior period amounts to conform to the current presentation

Table 3

ATLANTIC TELE-NETWORK, INC.

Unaudited Condensed Consolidated Cash Flow Statement

(in Thousands)

Table 4

ATLANTIC TELE-NETWORK, INC.

Operating Data for U.S. Retail Wireless Operations

ATLANTIC TELE-NETWORK, INC.

U.S. Retail Wireless Operations Key Performance Indicators

Table 5

ATLANTIC TELE-NETWORK, INC.

Reconciliation of Non-GAAP Measures

(In Thousands)

Reconciliation of Net Income to Adjusted EBITDA for the Three Months Ended December, 2011 and 2012

Three Months Ended December 31, 2011

Three Months Ended December 31, 2012

Reconciliation of Net Income to Adjusted EBITDA for the Year Ended December 31, 2011 and 2012

Year Ended December 31, 2011

Year Ended December 31, 2012

Reconciliation of Operating Income to Adjusted EBITDA for the Alltel Business