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): October 3, 2013

RigNet, Inc.

(Exact name of registrant as specified in its charter)

(281) 674-0100

(Registrant’s telephone number, including area code)

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

On October 3, 2013, RigNet, Inc. (the “Company”) entered into a Second Amended and Restated Credit Agreement with Bank of America, N.A., as administrative agent, and the lenders party thereto. The second amended and restated credit agreement provides for a $60.0 million term loan facility and $125.0 million revolving credit facility, which includes a $15 million sublimit for the issuance of standby letters of credit. The revolving credit facility is no longer subject to a borrowing base calculation. The Company had $54.6 million in term loans outstanding immediately prior to the second amendment and restatement and $60.0 million outstanding immediately after giving effect to the second amendment and restatement.

The term loan facility matures in October 2018 and requires quarterly scheduled principal amortization of $2.14 million commencing March 2014 through October 2018, with the remainder due at maturity. The revolving credit facility matures in October 2018 with any outstanding borrowings then payable. Borrowings under both the term and revolving facilities carry an interest rate of LIBOR plus an applicable margin ranging from 1.50% to 2.50%, which varies as a function of the Company’s leverage ratio.

The second amended and restated credit facility contains customary covenants that restrict, among other things, the Company’s ability to obtain additional debt financing and to pay cash dividends. The second amended and restated credit facility also contains financial covenants that the Company must meet, including leverage and fixed charge ratios. The loans under the second amended and restated credit facility are secured by substantially all of the assets of the Company and its domestic subsidiaries. Loans under the second amended and restated credit facility are subject to acceleration upon the occurrence of events of default that the Company considers usual and customary for an agreement of this type.

The foregoing description is qualified in its entirety by reference to the Credit Agreement, a copy of which is filed as an exhibit to this Current Report on Form 8-K and is incorporated by reference herein.

The information provided in Item 1.01 of this Current Report on Form 8-K is incorporated herein by reference.

Item 9.01 - Financial Statements and Exhibits

(c) Exhibits

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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.

Dated: October 4, 2013

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INDEX TO EXHIBITS

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