X0306 4 2019-12-05 0 0001315255 GTT Communications, Inc. GTT 0001389653 SPRUCE HOUSE PARTNERSHIP LP C/O SPRUCE HOUSE CAPITAL LLC 435 HUDSON STREET, 8TH FLOOR NEW YORK NY 10014 0 0 1 0 0001472167 Spruce House Capital LLC 435 HUDSON STREET 8TH FLOOR NEW YORK NY 10014 0 0 1 0 0001679333 Sternberg Zachary SPRUCE HOUSE INVESTMENT MANAGEMENT LLC 435 HUDSON STREET, 8TH FLOOR NEW YORK NY 10014 0 0 1 0 0001679335 Stein Benjamin Forester SPRUCE HOUSE INVESTMENT MANAGEMENT LLC 435 HUDSON STREET, 8TH FLOOR NEW YORK NY 10014 1 0 1 0 0001543170 SPRUCE HOUSE INVESTMENT MANAGEMENT LLC 435 HUDSON STREET 8TH FLOOR NEW YORK NY 10014 0 0 1 0 Common Stock, par value $.0001 per share 2019-12-05 4 P 0 162200 10.2965 A 15237200 D Common Stock, par value $.0001 per share 2019-12-06 4 P 0 17800 10.9514 A 15255000 D Common Stock, par value $.0001 per share 2019-12-09 4 P 0 60965 11.3134 A 15315965 D This transaction was executed in multiple trades at prices ranging from $9.9700 to $10.5100. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. The reported securities are held in the account of The Spruce House Partnership LP (the "Fund"), a private investment fund managed by Spruce House Investment Management LLC (the "Investment Manager"), and may be deemed to be beneficially owned by the Investment Manager, the general partner of the Fund, Spruce House Capital LLC (the "General Partner"), and by Zachary Sternberg and Benjamin Stein, managing members of the Investment Manager and the General Partner (the "Managing Members"). Each of the Investment Manager, the General Partner and the Managing Members disclaim beneficial ownership of the reported securities held by the Fund, except to the extent of his or its pecuniary interest therein. The Fund, Investment Manager, the General Partner and the Managing Members (collectively, the "Reporting Persons") affirmatively disclaim being a "group" for purposes of Section 16 of the Securities Exchange Act of 1934, as amended. This transaction was executed in multiple trades at prices ranging from $10.6600 to $11.0000. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $11.1350 to $11.3500. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. THE SPRUCE HOUSE PARTNERSHIP LP, By: /s/ Thomas Walker, Authorized Person 2019-12-09 SPRUCE HOUSE CAPITAL LLC, By: /s/ Thomas Walker, Authorized Person 2019-12-09 ZACHARY STERNBERG, By: /s/ Thomas Walker (Attorney-in-fact) 2019-12-09 BENJAMIN STEIN, By: /s/ Thomas Walker (Attorney-in-fact) 2019-12-09 SPRUCE HOUSE INVESTMENT MANAGEMENT LLC, By: /s/ Thomas Walker, Authorized Person 2019-12-09