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): January 3, 2017

GOGO INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code:

312-517-5000

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 January 3, 2017, Gogo Intermediate Holdings LLC (the “Company”), a direct wholly owned subsidiary of Gogo Inc. (“Gogo”), and Gogo Finance Co. Inc., a direct wholly owned subsidiary of the Company and an indirect wholly owned subsidiary of Gogo (the “Co-Issuer” and, together with the Company, the “Issuers”), issued $65 million aggregate principal amount of additional 12.500% senior secured notes due 2022 (the “Additional Notes”) under an Indenture, dated as of June 14, 2016 (the “Indenture”), among the Issuers, Gogo, as guarantor, certain subsidiaries of the Company, as guarantors (the “Subsidiary Guarantors” and, together with Gogo, the “Guarantors”), and U.S. Bank National Association, as trustee (in such capacity, the “Trustee”) and as collateral agent (in such capacity, the “Collateral Agent”). The Additional Notes were issued at a price equal to 108% of their face value resulting in gross proceeds of $70.2 million. The initial 12.500% senior secured notes due 2022 (the “Initial Notes”) were issued by the Issuers in an aggregate principal amount of $525 million on June 14, 2016 under the Indenture. The Company intends to use the net proceeds from the issuance of the Additional Notes for working capital and other general corporate purposes. The Additional Notes and the Initial Notes have the same terms except with respect to the issue date and issue price and are treated as a single series for all purposes under the Indenture and the security documents that govern the Additional Notes and the Initial Notes. For a description of the terms of the Additional Notes, see our Current Report on Form 8-K filed with the Securities and Exchange Commission on June 14, 2016. The Indenture was filed as an exhibit thereto.

In connection with the issuance of the Additional Notes, the Issuers and the Guarantors entered into a Reaffirmation Agreement, dated January 3, 2017 (the “Reaffirmation Agreement”), reaffirming the parties’ obligations as specified in the Collateral Agreement, dated as of June 14, 2016, among the Issuers, the Guarantors, U.S. Bank National Association, as Trustee under the Indenture, and U.S. Bank National Association, as Collateral Agent, whereby the Issuers and the Guarantors granted a security interest in substantially all of their assets to secure all obligations of the Issuers and the Guarantors under the Initial Notes, the Indenture and the guarantees, as applicable. In connection with the entry into the Reaffirmation Agreement, the Issuers entered into an Additional Secured Debt Designation Agreement, dated January 3, 2017 (the “Designation”), receipt of which was acknowledged by U.S. Bank National Association, as Collateral Agent. As a result of the Reaffirmation Agreement and the Designation, U.S. Bank National Association, as Trustee under the Indenture, and the holders of the Additional Notes benefit from the pledge of the collateral under the Collateral Agreement.

Copies of the Reaffirmation Agreement and the Designation are attached as Exhibits 10.1 and 10.2 hereto and incorporated herein by reference. The foregoing descriptions of the Reaffirmation Agreement and the Designation do not purport to be complete and are qualified in their entirety by reference to the full text of such documents.

The information set forth in Item 1.01 of this Current Report on Form 8-K is incorporated by reference into this Item 2.03.

SIGNATURE

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.

Date: January 3, 2017

EXHIBIT INDEX