Silver Lake Group, L.L.C. SC 13D Blackhawk Network Holdings, Inc

Exhibit A

EXECUTION VERSION

JOINT FILING AGREEMENT

PURSUANT TO RULE13D-1(K)(1)

The undersigned acknowledge and agree that the Statement on Schedule 13D filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the shares of Common Stock of Blackhawk Network Holdings, Inc. is filed on behalf of each of the undersigned and that all subsequent amendments to this Statement on Schedule 13D shall be filed on behalf of each of the undersigned that is named as a reporting person in such filing without the necessity of filing an additional joint filing agreement. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that it knows or has reason to believe that such information is inaccurate. This joint filing agreement may be executed in any number of counterparts and all of such counterparts taken together shall constitute one and the same instrument.

Dated: January 24, 2018

BHN Holdings, Inc.
	By:	/s/ Michael Bingle
		Name:	Michael Bingle
		Title:	President

Silver Lake Partners V, L.P.				SLTA V (GP), L.L.C.
By: Silver Lake Technology Associates V, L.P., its general partner				By: Silver Lake Group, L.L.C., its managing member
By: SLTA V (GP), L.L.C., its general partner					By:	/s/ Michael Bingle
						Name:	Michael Bingle
By: Silver Lake Group, L.L.C., its managing member						Title:	Managing Director
	By:	/s/ Michael Bingle
		Name:	Michael Bingle
		Title:	Managing Director
Silver Lake Technology Associates V, L.P.				Silver Lake Group, L.L.C.
By: SLTA V (GP), L.L.C., its general partner					By:	/s/ Michael Bingle
						Name:	Michael Bingle
By: Silver Lake Group, L.L.C., its managing member						Title:	Managing Director
	By:	/s/ Michael Bingle
		Name:	Michael Bingle
		Title:	Managing Director