EXHIBIT 1

JOINT FILING AGREEMENT

This will confirm the agreement by and among all the undersigned that the Schedule 13G filed on or about this date and any amendments thereto with respect to the beneficial ownership by the undersigned of shares of common stock, par value $0.0001 per share, of GTT Communications, Inc. is being filed on behalf of each of the undersigned in accordance with Rule 13d-1(k)(1).  This agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

Dated:  June 6, 2018	ALEPH TIGER INVESTORS LP
	Acting by its general partner:
	Aleph Capital Partners GP Limited
	By:	/s/ Matt Chick
		Name: Matt Chick
		Title: Director
	ALEPH CAPITAL PARTNERS GP LIMITED
	By:	/s/ Matt Chick
		Name: Matt Chick
		Title: Director
	/s/ Hugues Bernard Charles Lepic
	Hugues Bernard Charles Lepic

CRESTVIEW III TIGER, L.P.
Acting by its general partner:
Crestview III Tiger GP, LLC
By:	/s/ Ross Oliver
	Name: Ross Oliver
	Title: General Counsel