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

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Item 3. IF THIS STATEMENT IS FILED PURSUANT TO Rules 13d-1(b), OR 13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A:
(a) ¨ Broker or dealer registered under Section 15 of the Act;
(b) ¨ Bank as defined in Section 3(a)(6) of the Act;
(c) ¨ Insurance company as defined in Section 3(a)(19) of the Act;
(d) ¨ Investment company registered under Section 8 of the Investment Company Act of 1940;
(e) ¨ An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);
(f) ¨ An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F);
(g) ¨ A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);
(h) ¨ A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act;
(i) ¨ A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act;
(j) ¨ A non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J);
(k) ¨ Group, in accordance with Rule 13d-1(b)(1)(ii)(K).

If filing as a non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J),
please

specify the type of institution: __________________________________

Item 4. OWNERSHIP
The percentages set forth in this Schedule 13G are calculated based upon the 86,772,729 shares of Common Stock reported to be issued and outstanding as of October 30, 2017 in the Issuer’s Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2017 filed with the Securities and Exchange Commission on November 2, 2017.
Senator Investment Group
(a) Amount of beneficially owned: 4,949,197
(b) Percent of class: 5.7%
(c) Number of shares as to which such person has: 4,949,197
(i) Sole power to vote or to direct the vote:  0
(ii) Shared power to vote or to direct the vote:  4,949,197
(iii) Sole power to dispose or to direct the disposition of:  0
(iv) Shared power to dispose or to direct the disposition of:  4,949,197

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