13G Filing: Clearline Capital and Apptio Inc

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. ___)*

Apptio Inc.
(Name of
Issuer)

Class A Common Stock
(Title of Class of
Securities)

03835C108
(CUSIP Number)

March 28, 2017
(Date of Event which Requires
Filing of this Statement)

Check the appropriate box to designate the rule pursuant to
which this Schedule is filed:

[_]Rule 13d-1(b)

[X] Rule 13d-1(c)

[_] Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a
reporting persons initial filing on this form with respect to the subject class
of securities, and for any subsequent amendment containing information which
would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page
shall not be deemed to be filed for the purpose of Section 18 of the
Securities Exchange Act of 1934 (Act) or otherwise subject to the liabilities
of that section of the Act but shall be subject to all other provisions of the
Act (however, see the Notes).