UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported): March 13, 2017

Alaska Communications Systems Group, Inc.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (907) 297-3000

Not Applicable

Former name or former address, if changed since last report

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

On March 13, 2017, Alaska Communications Systems Holdings, Inc. (“Alaska Communications”), as borrower, entered into a Credit Agreement with Alaska Communications Systems Group, Inc. (the “Parent” or the “Company”) and certain of the Parent’s direct and indirect subsidiaries, as guarantors, ING Capital LLC, as Administrative Agent, and the lenders party thereto (the “Credit Agreement”) to provide debt financing in the form of a Revolving Facility in an aggregate amount at any one time outstanding not to exceed $15,000,000, including a letter of credit subfacility and swingline subfacility with commitment limitations based on amounts drawn under the Revolving Facility (collectively, the “Revolving Facility”), a term loan facility (A-1) in the aggregate amount not to exceed $120,000,000 (the “Term A-1 Facility”) and term loan facility (A-2) in the aggregate amount not to exceed $60,000,000 (the “Term A-2 Facility”, and collectively with the Revolving Facility and Term A-1 Facility, the “Credit Facility”).

As of March 13, 2017, the lenders became committed to fund the Credit Facility upon Alaska Communications satisfying certain standard conditions precedent to disbursement of the loans. The Term A-1 Facility and Term A-2 Facility proceeds are to be used to refinance Alaska Communications’ outstanding $62 million first lien term loan facility and $25 million second lien term loan facility, finance the purchase or repayment at maturity of the 6.250% convertible notes of the Parent having a due date of May 1, 2018 (the “Convertible Notes”) (including through payment relating to a previously announced tender offer for the Convertible Notes expected to be launched in the near term (the “Tender Offer”)) and to pay related fees and expenses. Proceeds of the Revolving Facility will be used for working capital and other general corporate purposes. Proceeds of the Term A-1 Facility and Term A-2 Facility in the principal amount of the Convertible Notes outstanding on the funding date that are not repaid or repurchased on the funding date (currently $94,000,000) will be disbursed into and held in a full dominion account. Such proceeds will be released to purchase or repay principal of the Convertible Notes from time to time, subject to Alaska Communications satisfying the disbursement conditions set forth in the Credit Agreement.

The Credit Facility also provides incremental term loans up to an aggregate amount of $50,000,000, which may be borrowed by Alaska Communications subject to obtaining commitments of lenders. In certain cases, borrowing an incremental term loan may result in an increase to the interest rate of the Term A-1 Facility and Term A-2 Facility.

The final maturity date for the Revolving Facility and Term A-1 Facility is March 13, 2022, and Term A-2 Facility is March 13, 2023. The terms and conditions of the Credit Facility include the following:

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The Credit Facility also contains certain customary covenants and events of default, as well as, in the event of an occurrence of an “Event of Default,” customary remedies for the lenders, including the acceleration of any amounts outstanding under the Credit Facility. Additionally, the Credit Facility includes certain customary conditions that must be met for Alaska Communications to borrow under the Credit Facility from time to time.

Certain parties to the Credit Agreement, including ING Capital LLC and certain of the lenders, are parties to Alaska Communications’ current credit facilities, have in the past performed, and may in the future perform, investment banking, financial advisory, lending, or commercial banking services, or other services for Alaska Communications and the Parent and its subsidiaries, for which they receive, have received, and may in the future receive, compensation and expense reimbursement.

The foregoing description of the Credit Facility is only a summary and does not purport to be complete. A copy of the Credit Agreement is attached hereto as Exhibit 10.1 and incorporated herein by reference.

The information set forth in Item 1.01 regarding the Company’s entry into, and borrowing under, the Credit Facility is incorporated herein by reference.

Important Information Regarding the Potential Tender Offer

The information herein is for informational purposes only and is neither an offer to buy nor the solicitation of an offer to sell any and all of the Company’s outstanding 6.25% Convertible Notes due 2018. The potential Tender Offer described herein has not yet commenced, and there can be no assurances that the Company will commence the Tender Offer on the terms and conditions described herein or at all. If the Company commences the Tender Offer, the Tender Offer will be made solely by an Offer to Purchase, the Letter of Transmittal and related materials, as they may be amended or supplemented. Stockholders should read the Company’s commencement tender offer statement on Schedule TO, expected to be filed with the Securities and Exchange Commission (the “SEC”) in connection with the Tender Offer, which will include as exhibits the Offer to Purchase, the Letter of Transmittal and related materials, as well as any amendments or supplements to the Schedule TO when they become available, because they will contain important information related to the potential Tender Offer. If the Company commences the Tender Offer, each of these documents will be filed with the SEC, and, when available, stockholders may obtain them for free from the SEC at its website (www.sec.gov) or from the Company’s information agent in connection with the Tender Offer.

Forward-Looking Statements

This press release includes certain “forward-looking statements,” as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on management’s beliefs as well as on a number of assumptions concerning future events made using information currently available to management. Readers are cautioned not to put undue reliance on such forward-looking statements, which are not a guarantee of performance and are subject to a number of uncertainties and other factors, many of which are outside the Company’s control. Such factors include, without limitation, Federal and Alaska Universal Service Fund changes, our ability to meet the terms and conditions of the Credit Agreement and the New Credit Facility, draw down funds under the New Credit Facility and continue to meet applicable requirements, our ability to commence and complete the expected Tender Offer for the Convertible Notes or otherwise repurchase the Convertible Notes or make repurchases of shares of common stock under the Company’s repurchase plan or otherwise, adverse economic conditions, the effects of competition in our markets, our relatively small size compared with our competitors, the Company’s ability to compete, manage, integrate, market, maintain, and attract sufficient customers for its products and services, adverse changes in labor matters, including workforce levels, our ability to service our debt (including pursuant to our refinanced credit arrangements) and refinance as required, labor negotiations, including

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renegotiating our collective bargaining agreement, employee benefit costs, our ability to control other operating costs, disruption of our supplier’s provisioning of critical products or services, the impact of natural or man-made disasters, changes in Company’s relationships with large customers, unforeseen changes in public policies, regulatory changes, changes in technology and standards, our internal control over financial reporting, and changes in accounting standards or policies, which could affect reported financial results. For further information regarding risks and uncertainties associated with the Company’s business, please refer to the Company’s SEC filings, including, but not limited to, the sections entitled “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our most recent annual report on Form 10-K and subsequent quarterly reports on Form 10-Q. Copies of the Company’s SEC filings may be obtained by contacting its investor relations department at (907) 564-7556 or by visiting its investor relations website at www.alsk.com or at the SEC’s website, www.sec.gov.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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Exhibit Index

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