SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

Apptio, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

                                                                                               ________03835C108_________

                      David Goldman

GAMCO Investors, Inc.

One Corporate Center

Rye, New York 10580-1435

(914) 921-5000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

______________________January 9, 2019________________________

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box .

 

CUSIP No. 03835C108

CUSIP No. 03835C108

 

 

CUSIP No. 03835C108

CUSIP No. 03835C108

CUSIP No. 03835C108

CUSIP No. 03835C108

CUSIP No. 03835C108

The class of equity securities to which this statement on Schedule 13D relates is the Common Stock of Apptio, Inc., (the "Issuer"), a Delaware corporation with principal offices located at 11100 NE 8^th Street, Suite 600, Bellevue, Washington 98004.

This statement is being filed by Mario J. Gabelli ("Mario Gabelli") and various entities which he

directly or indirectly controls or for which he acts as chief investment officer.  These entities, except for LICT Corporation ("LICT) and CIBL, Inc. ("CIBL"), engage in various aspects of the securities business, primarily as investment adviser to various institutional and individual clients, including registered investment companies and pension plans, and as general partner or the equivalent of various private investment partnerships or private funds.  Certain of these entities may also make investments for their own accounts.

The foregoing persons in the aggregate often own beneficially more than 5% of a class of equity securities of a particular issuer.  Although several of the foregoing persons are treated as institutional investors for purposes of reporting their beneficial ownership on the short-form Schedule 13G, the holdings of those who do not qualify as institutional investors may exceed the 1% threshold presented for filing on Schedule 13G or implementation of their investment philosophy may from time to time require action which could be viewed as not completely passive.  In order to avoid any question as to whether their beneficial ownership is being reported on the proper form and in order to provide greater investment flexibility and administrative uniformity, these persons have decided to file their beneficial ownership reports on the more detailed Schedule 13D form rather than on the short-form Schedule 13G and thereby to provide more expansive disclosure than may be necessary.

(a), (b) and (c) - This statement is being filed by one or more of the following persons: GGCP, Inc.  ("GGCP"), GGCP Holdings LLC ("GGCP Holdings"), GAMCO Investors, Inc. ("GBL"), Associated Capital Group, Inc. ("AC"), Gabelli Funds, LLC ("Gabelli Funds"), GAMCO Asset Management Inc. ("GAMCO"), Teton Advisors, Inc. ("Teton Advisors"), Gabelli & Company Investment Advisers, Inc. ("GCIA"), G.research, LLC ("G.research"), MJG Associates, Inc. ("MJG Associates"), Gabelli Foundation, Inc. ("Foundation"), Mario Gabelli, LICT and CIBL.  Those of the foregoing persons signing this Schedule 13D are hereinafter referred to as the "Reporting Persons".

GGCP makes investments for its own account and is the manager and a member of GGCP Holdings which is the controlling shareholder of GBL and AC.  GBL, a public company listed on the New York Stock Exchange, is the parent company for a variety of companies engaged in the securities business, including certain of those named below.  AC, a public company listed on the New York Stock Exchange, is the parent company for a variety of companies engaged in the securities business, including certain of those listed below.

GAMCO, a wholly-owned subsidiary of GBL, is an investment adviser registered under the Investment Advisers Act of 1940, as amended ("Advisers Act").  GAMCO is an investment manager providing discretionary managed account services for employee benefit plans, private investors, endowments, foundations and others.

GCIA, a wholly owned subsidiary of AC, is an investment adviser registered under the Advisers Act and serves as a general partner or investment manager to limited partnerships and offshore investment companies and other accounts.  As a part of its business, GCIA may purchase or sell securities for its own account.  GCIA is a general partner or investment manager of a number of funds or partnerships, including Gabelli Associates Fund, L.P., Gabelli Associates Fund II, L.P., Gabelli Associates Limited, Gabelli Associates Limited II E, ALCE Partners, L.P., Gabelli Capital Structure Arbitrage Fund LP, Gabelli Capital Structure Arbitrage Fund Limited, Gabelli Intermediate Credit Fund L.P., GAMA Select Energy + L.P., GAMCO Medical Opportunities L.P., and Gabelli Multimedia Partners, L.P.

G.research, a wholly owned subsidiary of GCIA, is a broker-dealer registered under the Securities Exchange Act of 1934, as amended ("1934 Act"), which as a part of its business regularly purchases and sells securities for its own account.

Gabelli Funds, a wholly owned subsidiary of GBL, is a limited liability company. Gabelli Funds is an investment adviser registered under the Advisers Act which provides advisory services for The Gabelli Equity Trust Inc., The Gabelli Asset Fund, The GAMCO Growth Fund, The Gabelli Convertible and Income Securities Fund Inc., The Gabelli Value 25 Fund Inc., The Gabelli Small Cap Growth Fund, The Gabelli Equity Income Fund, The Gabelli ABC Fund, The GAMCO Global Content & Connectivity Fund, The Gabelli Gold Fund, Inc., The Gabelli Multimedia Trust Inc., The Gabelli Global Rising Income & Dividend Fund, The Gabelli Capital Asset Fund, The GAMCO International Growth Fund, Inc., The GAMCO Global Growth Fund, The Gabelli Utility Trust, The Gabelli Utilities Fund, The Gabelli Dividend Growth Fund, The Gabelli Focus Five Fund, The Comstock Capital Value Fund, The Gabelli Dividend and Income Trust, The Gabelli Global Utility & Income Trust, The GAMCO Global Gold, Natural Resources, & Income Trust, The GAMCO Natural Resources Gold & Income Trust, The GDL Fund, Gabelli Enterprise Mergers & Acquisitions Fund, The Gabelli ESG Fund, Inc., The Gabelli International Small Cap Fund, The Gabelli Healthcare & Wellness ^Rx Trust, The Gabelli Global Small and Mid Cap Value Trust, Gabelli Value Plus+ Trust, Gabelli Merger Plus+ Trust Plc,  The Gabelli Global Financial Services Fund, The Gabelli Global Mini Mites Fund, The Gabelli Go Anywhere Trust, The Gabelli U.S. Treasury Money Market Fund, Bancroft Fund Ltd. and Ellsworth Growth & Income Fund Ltd. (collectively, the "Funds"), which are registered investment companies.  Gabelli Funds is also the investment adviser to the Gabelli Media Mogul NextShares^TM, the Gabelli Food of All Nations NextShares^TM, the RBI NextShares^TM, and the Gabelli Pet Parents' Fund NextShares^TM, and The GAMCO International SICAV (sub-funds GAMCO Merger Arbitrage and GAMCO All Cap Value), a UCITS III vehicle.

Teton Advisors, an investment adviser registered under the Advisers Act, provides discretionary advisory services to The TETON Westwood Mighty Mites^sm Fund, The TETON Westwood Income Fund, The TETON Westwood SmallCap Equity Fund, TETON Westwood Intermediate Bond Fund, and The TETON Westwood Mid-Cap Equity Fund.

MJG Associates provides advisory services to private investment partnerships and offshore funds.  Mario Gabelli is the sole shareholder, director and employee of MJG Associates.   MJG Associates is the Investment Manager of Gabelli International Limited and Gabelli Fund, LDC.  Mario J. Gabelli is the general partner of Gabelli Performance Partnership, LP.

The Foundation is a private foundation.  Mario Gabelli is the Chairman, a Trustee and the Investment Manager of the Foundation. Elisa M. Wilson is the President of the Foundation.

LICT is a holding company with operating subsidiaries engaged primarily in the rural telephone industry. LICT actively pursues new business ventures and acquisitions. LICT makes investments in marketable securities to preserve capital and maintain liquidity for financing their business activities and acquisitions and are not engaged in the business of investing, or trading in securities. Mario J. Gabelli is the Chief Executive Officer, a director, and substantial shareholder of LICT.

CIBL is a holding company with interests in telecommunications operations, primarily in the rural telephone industry. CIBL actively pursues new business ventures and acquisitions. CIBL makes investments in marketable securities to preserve capital and maintain liquidity for financing their business activities and acquisitions and are not engaged in the business of investing, or trading in securities. Mario J. Gabelli is a director, and substantial shareholder of CIBL.

Mario Gabelli is the controlling stockholder, Chief Executive Officer and a director of GGCP and Chairman and Chief Executive Officer of GBL. He is the Executive Chairman of AC.  Mario Gabelli is also a member of GGCP Holdings. Mario Gabelli is the controlling shareholder of Teton.

The Reporting Persons do not admit that they constitute a group.

GAMCO is a New York corporation and GBL, AC, GCIA, and Teton Advisors are Delaware corporations, each having its principal business office at One Corporate Center, Rye, New York 10580. GGCP is a Wyoming corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830.   GGCP Holdings is a Delaware limited liability corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830.  G.research is a Delaware limited liability company having its principal officers at One Corporate Center, Rye, New York 10580.  Gabelli Funds is a New York limited liability company having its principal business office at One Corporate Center, Rye, New York 10580.  MJG Associates is a Connecticut corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830.  The Foundation is a Nevada corporation having its principal offices at 165 West Liberty Street, Reno, Nevada 89501.  LICT is a Delaware corporation having its principal place of business as 401 Theodore Fremd Avenue, Rye, New York 10580. CIBL, Inc. is a Delaware corporation having its principal place of business as 165 West Liberty Street, Suite 220, Reno, NV 89501.

For information required by instruction C to Schedule 13D with respect to the executive officers and directors of the foregoing entities and other related persons (collectively, "Covered Persons"), reference is made to Schedule I annexed hereto and incorporated herein by reference.

(d) – Not applicable.

(e) – Not applicable.

The Reporting Persons used an aggregate of approximately $87,500,119 to purchase the Securities reported as beneficially owned in Item 5. GAMCO and Gabelli Funds used approximately $15,992,608 and $53,935,446, respectively, of funds that were provided through the accounts of certain of their investment advisory clients (and, in the case of some of such accounts at GAMCO, may be through borrowings from client margin accounts) in order to purchase the Securities for such clients. GCIA used approximately $17,148,339 of client funds to purchase the Securities reported by it. AC used approximately $423,726 of working capital to purchase the Securities reported by it.

                             Each of the Reporting Persons has purchased and holds the Securities reported by it for investment for one or more accounts over which it has shared, sole, or both investment and/or voting power, for its own account, or both.

The Reporting Persons are engaged in the business of securities analysis and investment. The Reporting Persons analyze the operations, capital structure and markets of companies in which they invest, including the Issuer, on a continuous basis through analysis of documentation and discussions with knowledgeable industry and market observers and with representatives of such companies (often at the invitation of management).  As a result of these analytical activities one or more of the Reporting Persons may issue analysts reports, participate in interviews or hold discussions with third parties, with management or with Directors in which the Reporting Person may suggest or take a position with respect to potential changes in the operations, management or capital structure of such companies as a means of enhancing shareholder values.  Such suggestions or positions may relate to one or more of the transactions specified in clauses (a) through (j) of Item 4 of Schedule 13D including, without limitation, such matters as disposing of one or more businesses, selling the company or acquiring another company or business, changing operating or marketing strategies, adopting or not adopting, certain types of anti-takeover measures and restructuring the company's capitalization or dividend policy.

Each of the Reporting Persons intends to adhere to the foregoing investment philosophy with respect to the Issuer.  However, none of the Reporting Persons intends to seek control of the Issuer or participate in the management of the Issuer, and any Reporting Person that is registered as an investment company under the Company Act will participate in such a transaction only following receipt of an exemption from the SEC under Rule 17d-1 under the Company Act, if required, and in accordance with other applicable law.  In pursuing this investment philosophy, each Reporting Person will continuously assess the Issuer's business, financial condition, results of operations and prospects, general economic conditions, the securities markets in general and those for the Issuer's securities in particular, other developments and other investment opportunities, as well as the investment objectives and diversification requirements of its shareholders or clients and its fiduciary duties to such shareholders or clients.  Depending on such assessments, one or more of the Reporting Persons may acquire additional Securities or may determine to sell or otherwise dispose of all or some of its holdings of Securities.  Although the Reporting Persons share the same basic investment philosophy and although most portfolio decisions are made by or under the supervision of Mario Gabelli, the investment objectives and diversification requirements of various clients differ from those of other clients so that one or more Reporting Persons may be acquiring Securities while others are disposing of Securities.

With respect to voting of the Securities, the Reporting Persons have adopted general voting policies relating to voting on specified issues affecting corporate governance and shareholder values.  Under these policies, the Reporting Persons generally vote all securities over which they have voting power in favor of cumulative voting, financially reasonable golden parachutes, one share one vote, management cash incentives and pre-emptive rights and against greenmail, poison pills, supermajority voting, blank check preferred stock and super-dilutive stock options.  Exceptions may be made when management otherwise demonstrates superior sensitivity to the needs of shareholders.  In the event that the aggregate voting position of all Reporting Persons exceeds 25% of the total voting position of the Issuer, one or more of the filing persons may transfer voting and/or dispositive power over shares to independent committees of directors or the owners of such shares. Such committees vote and/or consider disposition of such shares independently of the Reporting Persons.

Each of the Covered Persons who is not a Reporting Person has purchased the Securities reported herein as beneficially owned by him for investment for his own account or that of one or more members of his immediate family.  Each such person may acquire additional Securities or dispose of some or all of the Securities reported herein with respect to him.

Other than as described above, none of the Reporting Persons and none of the Covered Persons who is not a Reporting Person has any present plans or proposals which relate to or would result in any transaction, change or event specified in clauses (a) through (j) of Item 4 of Schedule 13D.

(a) The aggregate number of Securities to which this Schedule 13D relates is 2,311,440 shares, representing 5.07% of the 45,566,879 shares outstanding as reported in the Issuer's most recently filed Schedule 14A as of December 6, 2018. The Reporting Persons beneficially own those Securities as follows:

Mario Gabelli is deemed to have beneficial ownership of the Securities owned beneficially by each of the foregoing persons.  GCIA is deemed to have beneficial ownership of the Securities owned beneficially by G.research.  AC, GBL and GGCP are deemed to have beneficial ownership of the Securities owned beneficially by each of the foregoing persons other than Mario Gabelli and the Foundation.

(b) Each of the Reporting Persons and Covered Persons has the sole power to vote or direct the vote and sole power to dispose or to direct the disposition of the Securities reported for it, either for its own benefit or for the benefit of its investment clients or its partners, as the case may be, except that (i) Gabelli Funds has sole dispositive and voting power with respect to the shares of the Issuer held by the Funds so long as the aggregate voting interest of all joint filers does not exceed 25% of their total voting interest in the Issuer and, in that event, the Proxy Voting Committee of each Fund shall respectively vote that Fund's shares, (ii) at any time, the Proxy Voting Committee of each such Fund may take and exercise in its sole discretion the entire voting power with respect to the shares held by such fund under special  circumstances such as regulatory considerations, and (iii) the power of Mario Gabelli, AC, GBL, and GGCP is indirect with respect to Securities beneficially owned directly by other Reporting Persons.

(c) Information with respect to all transactions in the Securities which were effected during the past sixty days or since the most recent filing on Schedule 13D, whichever is less, by each of the Reporting Persons and Covered Persons is set forth on Schedule II annexed hereto and incorporated herein by reference.

(e) Not applicable.

The powers of disposition and voting of Gabelli Funds, Teton Advisors, GAMCO, GCIA and MJG Associates with respect to Securities owned beneficially by them on behalf of their investment advisory clients, and of MJG Associates and GCIA with respect to Securities owned beneficially by them on behalf of the partnerships or corporations which they directly or indirectly manage, are held pursuant to written agreements with such clients, partnerships and funds.

The following Exhibit A is attached hereto.  The following Exhibit B is incorporated by reference to Exhibit B in the Initial Schedule 13D of the Reporting Persons with respect to Lincare Holdings Inc.

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

GGCP, INC.

MARIO J. GABELLI

By:/s/ David Goldman

     David Goldman

     Attorney-in-Fact

GABELLI FUNDS, LLC

     David Goldman

     General Counsel – Gabelli Funds, LLC

  GAMCO INVESTORS, INC.

     Kevin Handwerker

                General Counsel &Secretary – GAMCO Investors, Inc.

ASSOCIATED CAPITAL GROUP, INC.

GAMCO ASSET MANAGEMENT INC.

GABELLI & COMPANY INVESTMENT ADVISERS, INC.

Douglas R. Jamieson

President & Chief Executive Officer – Associated Capital

Group, Inc.

      President – GAMCO Asset Management Inc.

      President – Gabelli & Company Investment Advisers, Inc.

SCHEDULE I

     Information with Respect to Executive

Schedule I to Schedule 13D is amended, in pertinent part, as follows:

 

 

 

                               SCHEDULE II

                            INFORMATION WITH RESPECT TO

                 TRANSACTIONS EFFECTED DURING THE PAST SIXTY DAYS OR

                 SINCE THE MOST RECENT FILING ON SCHEDULE 13D (1)

                                   SHARES PURCHASED        AVERAGE

                        DATE            SOLD(-)             PRICE(2)

 COMMON STOCK-APPTIO, INC.

          GABELLI & COMPANY INVESTMENT ADVISERS, INC.

                       1/09/19            7,500            37.9800

                       1/09/19            3,100            37.9740

                       1/08/19           12,000            37.9906

                       1/04/19            7,800            37.9219

                       1/02/19            2,300            37.9450

                      12/21/18            6,600            37.7900

                      12/20/18            7,400            37.8220

                      12/19/18            2,100            37.8402

                      12/17/18           15,896            37.8241

                      12/14/18            1,800            37.8433

                      12/13/18              800            37.8391

                      12/10/18            2,700            37.8101

                      12/07/18            1,400            37.9900

                      12/06/18              800-           38.2173

                      12/06/18            1,500            37.8302

                      12/04/18            6,600            37.9229

                      11/30/18            4,000            37.9931

                      11/29/18              700            38.0050

                      11/27/18            1,900            37.8721

                      11/19/18            2,900            37.6762

                      11/16/18            3,200            37.6776

                      11/15/18           15,400            37.7457

                      11/14/18            1,000            37.7685

                      11/13/18            3,900            37.7578

                      11/12/18           11,700            37.6341

             GABELLI ASSOCIATES LIMITED II E

                       1/09/19            1,300            37.9740

                       1/09/19            3,300            37.9800

                       1/08/19            5,400            37.9906

                       1/04/19            3,500            37.9219

                       1/02/19              400            37.9450

                      12/21/18            2,900            37.7900

                      12/20/18            3,300            37.8220

                      12/19/18              900            37.8402

                      12/17/18            7,200            37.8241

                      12/14/18              700            37.8433

                      12/13/18              400            37.8391

                      12/10/18            1,300            37.8101

                      12/07/18              600            37.9900

                      12/06/18              300-           38.2173

                      12/06/18              600            37.8302

                      12/04/18            2,900            37.9229

                      11/30/18            1,800            37.9931

                      11/29/18              300            38.0050

                      11/27/18            1,000            37.8721

                      11/19/18            1,200            37.6762

                      11/16/18            1,400            37.6776

                      11/15/18            7,000            37.7457

                      11/14/18              400            37.7685

                      11/13/18            1,700            37.7578

                      11/12/18            5,300            37.6341

            GABELLI ASSOCIATES LIMITED

                       1/09/19            6,600            37.9800

                       1/09/19            2,600            37.9740

                       1/08/19           10,700            37.9906

                       1/04/19            3,200            37.9219

                      12/21/18            6,100            37.7900

                      12/20/18            6,900            37.8220

                      12/19/18            2,000            37.8402

                      12/17/18           15,000            37.8241

                      12/14/18            1,600            37.8433

                      12/13/18              900            37.8391

                      12/10/18            2,400            37.8101

                      12/07/18            1,400            37.9900

                      12/06/18            1,300            37.8302

                      12/06/18              700-           38.2173

                      12/04/18            6,200            37.9229

                      11/30/18            2,500            37.9931

                      11/29/18              700            38.0050

                      11/27/18            2,000            37.8721

                      11/19/18            2,900            37.6762

                      11/16/18            3,122            37.6776

                      11/15/18           14,844            37.7457

                      11/14/18              900            37.7685

                      11/13/18            3,726            37.7578

                      11/12/18           11,400            37.6341

             GABELLI ASSOCIATES FUND II

                       1/09/19            2,800            37.9800

                       1/09/19            1,100            37.9740

                       1/08/19            4,400            37.9906

                       1/04/19            2,800            37.9219

                       1/02/19              600            37.9450

                      12/21/18            2,400            37.7900

                      12/20/18            2,700            37.8220

                      12/19/18              800            37.8402

                      12/17/18            5,800            37.8241

                      12/14/18              700            37.8433

                      12/13/18              400            37.8391

                      12/10/18              900            37.8101

                      12/07/18              500            37.9900

                      12/06/18              500            37.8302

                      12/06/18              200-           38.2173

                      12/04/18            2,400            37.9229

                      11/30/18            1,200            37.9931

                      11/29/18              300            38.0050

                      11/27/18              700            37.8721

                      11/19/18            1,100            37.6762

                      11/16/18            1,300            37.6776

                      11/15/18            5,700            37.7457

                      11/14/18              400            37.7685

                      11/13/18            1,400            37.7578

                      11/12/18            4,400            37.6341

            GABELLI ASSOCIATES FUND

                       1/09/19            3,000            37.9740

                       1/09/19            7,400            37.9800

                       1/08/19           11,800            37.9906

                       1/04/19            3,100            37.9219

                      12/21/18            7,000            37.7900

                      12/20/18            7,800            37.8220

                      12/19/18            2,400            37.8402

                      12/17/18           16,900            37.8241

                      12/14/18            1,800            37.8433

                      12/13/18            1,100            37.8391

                      12/10/18            2,800            37.8101

                      12/07/18            1,600            37.9900

                      12/06/18            1,425            37.8302

                      12/06/18              800-           38.2173

                      12/04/18            7,000            37.9229

                      11/30/18            2,600            37.9931

                      11/29/18              900            38.0050

                      11/27/18            2,300            37.8721

                      11/19/18            3,100            37.6762

                      11/16/18            3,600            37.6776

                      11/15/18           16,900            37.7457

                      11/14/18            1,200            37.7685

                      11/13/18            4,200            37.7578

                      11/12/18           12,900            37.6341

          GAMCO ASSET MANAGEMENT INC.

                       1/09/19            4,600            37.9800

                       1/09/19            1,700            37.9740

                       1/08/19            7,450            37.9906

                       1/04/19            5,000            37.9219

                       1/02/19           99,741            37.9513

                       1/02/19            1,200            37.9450

                      12/31/18            4,259            37.9549

                      12/21/18            3,950            37.7900

                      12/20/18            4,300            37.8220

                      12/20/18           30,000            37.8585

                      12/19/18            1,300            37.8402

                      12/17/18            9,800            37.8241

                      12/14/18            4,800            37.8250

                      12/14/18            1,100            37.8433

                      12/13/18              600            37.8391

                      12/11/18              100            37.9400

                      12/10/18            1,650            37.8101

                      12/10/18           20,000            37.8298

                      12/07/18              800            37.9900

                      12/06/18              500-           38.2173

                      12/06/18              900            37.8302

                      12/04/18            4,100            37.9229

                      12/04/18           50,500            37.9739

                      11/30/18            2,450            37.9931

                      11/29/18              300            38.0050

                      11/27/18            1,400            37.8721

                      11/23/18           19,500            37.9734

                      11/23/18            4,500            37.7771

                      11/19/18           65,000            37.7183

                      11/19/18            1,750            37.6762

                      11/16/18            2,000            37.6776

                      11/15/18            9,400            37.7457

                      11/14/18           33,000            37.7650

                      11/14/18              650            37.7685

                      11/14/18            3,000            37.7720

                      11/13/18           12,500            37.7649

                      11/13/18            2,400            37.7578

                      11/12/18            7,200            37.6341                                                                                             

           GABELLI FUNDS, LLC.

             GABELLI GLOBAL UTILITY & INCOME TRUST

                       1/08/19           30,000            38.0050                                                                                             

             GABELLI GLOBAL SMALL AND MIDCAP VALUE TRUST

                      12/31/18           10,000            37.9550

             GABELLI GO ANYWHERE TRUST

                      12/27/18            2,000            37.8850

                      11/14/18            3,000            37.7650

                      11/13/18            3,000            37.7649

             THE GDL FUND

                       1/09/19           27,231            37.9823

                       1/04/19           12,769            37.9172

                      12/28/18           15,000            37.9228

                      12/21/18           20,000            37.8062

                      12/20/18           25,000            37.8378

                      12/13/18           10,000            37.8550

                      12/12/18           15,000            37.8528

                      12/10/18           19,000            37.8024

                      12/06/18            6,000            37.7550

                      12/04/18           10,000            37.9846

                      11/27/18           13,140            37.9350

                      11/26/18           26,860            37.9350

                      11/20/18           33,500            37.6649

                      11/14/18           18,500            37.7650

                      11/13/18           18,000            37.7649

                      11/12/18           10,000            37.7543

             GABELLI CONVERTIBLE & INCOME SECURITIES FUND INC.

                       1/03/19           10,000            37.9355

             GABELLI ENTERPRISE M&A FUND

                       1/04/19           29,377            37.9377

                       1/03/19           35,623            37.9226

                      12/28/18           20,000            37.9290

                      12/13/18           20,000            37.8735

                      11/28/18           15,000            37.9844

                      11/19/18           21,000            37.7450

                      11/14/18           10,000            37.7650

                      11/13/18            9,000            37.7649

             GAMCO MERGER ARBITRAGE

                       1/09/19           17,100            37.9800

                       1/09/19            7,100            37.9740

                       1/08/19           27,150            37.9906

                       1/04/19           17,025            37.9219

                       1/02/19            5,300            37.9450

                      12/21/18           15,450            37.7900

                      12/20/18           16,900            37.8220

                      12/19/18            5,900            37.8402

                      12/17/18           36,700            37.8241

                      12/14/18            3,860            37.8433

                      12/13/18            1,459            37.8391

                      12/10/18            7,651            37.8101

                      12/07/18            3,500            37.9900

                      12/06/18            1,600-           38.2173

                      12/06/18            3,175            37.8302

                      12/04/18           14,240            37.9229

                      11/30/18            9,020            37.9931

                      11/29/18            1,600            38.0050

                      11/27/18            4,487            37.8721

                      11/19/18            6,750            37.6762

                      11/16/18            7,100            37.6776

                      11/15/18           35,500            37.7457

                      11/14/18            2,705            37.7685

                      11/13/18            8,800            37.7578

                      11/12/18           27,176            37.6341

             GAMCO ALL CAP VALUE

                      11/14/18              200            37.7650

                      11/13/18              200            37.7649

             GABELLI ABC FUND

                       1/04/19           42,079            37.9369

                      12/17/18          150,000            37.8148

                      12/10/18           50,000            37.8147

                      12/04/18          109,453            37.9849

                      11/30/18           20,547            37.9846

                      11/27/18          135,000            37.9250

                      11/16/18           20,964            37.7622

                      11/14/18           56,736            37.7650

                      11/13/18           57,300            37.7649

          ASSOCIATED CAPITAL GROUP, INC.

                       1/09/19              200            37.9740

                       1/09/19              700            37.9800

                       1/08/19            1,100            37.9906

                       1/04/19              700            37.9219

                       1/02/19              200            37.9450

                      12/21/18              600            37.7900

                      12/20/18              700            37.8220

                      12/19/18              200            37.8402

                      12/17/18            1,500            37.8241

                      12/14/18              100            37.8433

                      12/13/18              100            37.8391

                      12/10/18              200            37.8101

                      12/07/18              200            37.9900

                      12/06/18              100-           38.2173

                      12/06/18              100            37.8302

                      12/04/18              600            37.9229

                      11/30/18              400            37.9931

                      11/27/18              200            37.8721

                      11/19/18              300            37.6762

                      11/16/18              300            37.6776

                      11/15/18            1,400            37.7457

                      11/14/18              100            37.7685

                      11/13/18              300            37.7578

                      11/12/18            1,100            37.6341

(1) UNLESS OTHERWISE INDICATED, ALL TRANSACTIONS WERE EFFECTED

    ON THE NASDAQ.

(2) PRICE EXCLUDES COMMISSION.

 

 

In accordance with Rule 13d-1(f) under the securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Entities (as such term is defined in the Schedule 13D referred to below) on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the Common Stock of Apptio, Inc. and that this Agreement be included as an Exhibit to such joint filing.  This Agreement may be executed in any number of counterparts all of which taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement this January 10, 2019.