13D Filing: Senator Investment Group and Gogo Inc. (GOGO)

Page 7 of 9 – SEC Filing

SIGNATURES

After reasonable inquiry and to the best
of his or its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true,
complete and correct.

Date: March 19, 2018

SENATOR INVESTMENT GROUP LP
/s/ Evan Gartenlaub
Name: Evan Gartenlaub
Title: General Counsel
/s/ Evan Gartenlaub as Attorney-in-Fact*
ALEXANDER KLABIN
/s/ Evan Gartenlaub as Attorney-in-Fact*
DOUGLAS SILVERMAN

* Pursuant to a Power of Attorney attached to the Schedule 13G filed
by the Reporting Persons on April 24, 2013.

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