13D Filing: Clearlake Capital Partners IV Finance, L.P. and Tangoe Inc (TNGO)

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CUSIP NO. 87582Y108 13D Page
8
of 10 Pages

This Amendment No. 3 to Schedule 13D is being filed by Clearlake Capital Partners IV
Finance, L.P., Clearlake Capital Partners IV GP, L.P., Clearlake Capital Partners, LLC, CCG Operations, LLC, Behdad Eghbali and José E. Feliciano (collectively, the “Reporting Persons”), pursuant to §240.13d-2(a), to amend the
Schedule 13D filed by the Reporting Persons on November 30, 2015 (the “Initial Schedule 13D”), as amended by Amendment No. 1 thereto filed by the Reporting Persons on December 15, 2015, and by Amendment No. 2 thereto
filed by the Reporting Persons on January 11, 2016, relating to the Common Stock, $0.0001 par value per share, of Tangoe, Inc. Except as set forth below, all Items of the Initial Schedule 13D remain unchanged. All capitalized terms not
otherwise defined herein shall have the meanings ascribed to such terms in the Initial Schedule 13D.

Item 3. Source and Amount of Funds or Other Consideration

Item 3 of the Initial Schedule
13D is amended in its entirety to read as follows:

In a series of transactions completed on January 19, 2016, the Reporting Persons
acquired 5,109,900 shares of common stock of the Issuer (the “Shares”) for approximately $39,280,781 in investment capital. The source of funds for this consideration was the available capital of Clearlake Capital Partners IV Finance,
L.P., which may, at any given time, include margin loans made by brokerage firms, or capital contributions from investors in Clearlake Capital Partners IV Finance, L.P., each in the ordinary course of business.

Item 5. Interest in Securities of the Issuer

Item 5 of the Initial Schedule 13D is amended
in its entirety to read as follows:

The information contained on the cover pages to this Schedule 13D and the information set forth or
incorporated in Items 2, 3, 4 and 6 are incorporated herein by reference.

(a) As of the date hereof, the Reporting Persons have the following interest in the securities of the Company:
i. Clearlake Capital Partners IV Finance, L.P. beneficially owns 5,109,900 Shares, making it the beneficial owner of 12.96% of the Issuer’s common stock. Clearlake Capital Partners IV Finance, L.P. has shared voting
and investment power with respect to these Shares, and does not have sole voting or investment power with respect to any of these Shares.
ii. Clearlake Capital Partners IV GP, L.P. beneficially owns 5,109,900 Shares, making it the beneficial owner of 12.96% of the Issuer’s common stock. Clearlake Capital Partners IV GP, L.P. has shared voting and
investment power with respect to these Shares, and does not have sole voting or investment power with respect to any of these Shares.
iii. Clearlake Capital Partners, LLC beneficially owns 5,109,900 Shares, making it the beneficial owner of 12.96% of the Issuer’s common stock. Clearlake Capital Partners, LLC has shared voting and investment power with
respect to these Shares, and does not have sole voting or investment power with respect to any of these Shares.
iv. CCG Operations, LLC beneficially owns 5,109,900 Shares, making it the beneficial owner of 12.96% of the Issuer’s common stock. CCG Operations, LLC has shared voting and investment power with respect to these
Shares, and does not have sole voting or investment power with respect to any of these Shares.
v. Behdad Eghbali beneficially owns 5,109,900 Shares, making him the beneficial owner of 12.96% of the Issuer’s common stock. Mr Eghbali has shared voting and investment power with respect to these Shares, and does
not have sole voting or investment power with respect to any of these Shares.
vi. José E. Feliciano beneficially owns 5,109,900 Shares, making him the beneficial owner of 12.96% of the Issuer’s common stock. Mr. Feliciano has shared voting and investment power with respect to these
Shares, and does not have sole voting or investment power with respect to any of these Shares.

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