X0508 4 2026-01-08 0 0001537054 Gogo Inc. GOGO 0001135089 THORNE OAKLEIGH 63 FRONT ST., P.O. BOX 258 MILBROOK NY 12545 1 0 1 0 0 Common Stock 2026-01-08 4 M 0 22475 A 1291714 D Common Stock 2026-01-08 4 F 0 9293 5.24 D 1282421 D Common Stock 2026-01-08 4 M 0 75620 A 1358041 D Common Stock 2026-01-08 4 F 0 27966 5.24 D 1330075 D Common Stock 2026-01-08 4 M 0 169642 A 1499717 D Common Stock 2026-01-08 4 F 0 71788 5.24 D 1427929 D Common Stock 100 I By Spouse Common Stock 27303395 I See Footnote Restricted Stock Units 2026-01-08 4 M 0 22475 0.00 D Common Stock 22475 0 D Restricted Stock Units 2026-01-08 4 M 0 75620 0.00 D Common Stock 75620 0 D Restricted Stock Units 2026-01-08 4 M 0 169642 0.00 D Common Stock 169642 0 D Restricted stock units ("RSUs") convert into common stock on a one-for-one basis. On January 8, 2026, following the expiration of the reporting person's employment agreement with the Company (as previously described in the Company's public filings), all of his outstanding RSUs automatically vested into shares of common stock. The reporting person remains a member of the Company's board of directors. All outstanding RSUs were initially set to vest in four equal annual installments starting on the first anniversary of the respective grant date, subject to continued employment with the Company. Reflects RSUs granted to the reporting person on March 24, 2022. Reflects RSUs granted to the reporting person on March 3, 2023. Reflects RSUs granted to the reporting person on April 1, 2024. Reflects (i) 27,163,859 shares of common stock held directly by Thorndale Farm Gogo, LLC and (ii) 139,536 shares of common stock held directly by OAP, LLC. Thorndale Farm, Inc. is the managing member of Thorndale Farm Gogo, LLC. Mr. Thorne, as the chief executive officer of Thorndale Farm, Inc. may be deemed to have beneficial ownership of the shares of common stock held by Thorndale Farm Gogo, LLC. Additionally, Mr. Thorne, as the managing member of OAP, LLC, may be deemed to have beneficial ownership of the shares of common stock held by OAP, LLC. Mr. Thorne and Thorndale Farm, Inc. disclaim beneficial ownership of such shares of common stock except, in each case, to the extent of any pecuniary interest therein and this report shall not be deemed an admission that Mr. Thorne or Thorndale Farm, Inc. is a beneficial owner of such shares of common stock for purposes of Section 16 or for any other purpose. /s/ Crystal L. Gordon, Attorney-in-Fact for Oakleigh Thorne 2026-01-12