AGREEMENT OF JOINT FILING

Exhibit 1

AGREEMENT OF JOINT FILING

This joint filing agreement (this “Agreement”) is made and entered into as of this 23rd day of December 2015, by and among the persons named below.

The parties to this Agreement hereby agree to prepare jointly and file timely (and otherwise to deliver as appropriate) all filings on any Form 3, Form 4, Form 5 or Schedule 13D or Schedule 13G, and any and all amendments thereto and any other document relating thereto (collectively, the “Filings”) required to be filed by them pursuant to the Securities Exchange Act of 1934, as amended (the “Exchange Act”).  Each party to this Agreement further agrees and covenants to the other parties that it will fully cooperate with such other parties in the preparation and timely filing (and other delivery) of all such Filings.

This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all of which together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date first set forth above.

Dated:  December 23, 2015

	WP X FINANCE, L.P.
	By: WPX GP, L.P., its managing general partner By: Warburg Pincus Private Equity X, L.P., its general partner By: Warburg Pincus X, L.P., its general partner By: Warburg Pincus X GP L.P., its general partner By: WPP GP LLC, its general partner By: Warburg Pincus Partners, L.P., its managing member
	By: Warburg Pincus Partners GP LLC, its general partner
	By: Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
	Name:	Xxxxxx X. Xxxxxx
	Title:	Partner
	WPX GP, L.P.
	By: Warburg Pincus Private Equity X, L.P., its general partner By: Warburg Pincus X, L.P., its general partner By: Warburg Pincus X GP L.P., its general partner By: WPP GP LLC, its general partner By: Warburg Pincus Partners, L.P., its managing member
	By: Warburg Pincus Partners GP LLC, its general partner
	By: Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
	Name:	Xxxxxx X. Xxxxxx
	Title:	Partner

	WARBURG PINCUS PRIVATE EQUITY X, L.P.
	By: Warburg Pincus X, L.P., its general partner By: Warburg Pincus X GP L.P., its general partner By: WPP GP LLC, its general partner By: Warburg Pincus Partners, L.P., its managing member
	By: Warburg Pincus Partners GP LLC, its general partner
	By: Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
	Name:	Xxxxxx X. Xxxxxx
	Title:	Partner
	WARBURG PINCUS X PARTNERS, L.P.
	By: Warburg Pincus X, L.P., its general partner By: Warburg Pincus X GP L.P., its general partner By: WPP GP LLC, its general partner By: Warburg Pincus Partners, L.P., its managing member
	By: Warburg Pincus Partners GP LLC, its general partner
	By: Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
	Name:	Xxxxxx X. Xxxxxx
	Title:	Partner
	WARBURG PINCUS X, L.P.
	By: Warburg Pincus X GP L.P., its general partner By: WPP GP LLC, its general partner By: Warburg Pincus Partners, L.P., its managing member
	By: Warburg Pincus Partners GP LLC, its general partner
	By: Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
	Name:	Xxxxxx X. Xxxxxx
	Title:	Partner
	WARBURG PINCUS X GP L.P.
	By: WPP GP LLC, its general partner
	By: Warburg Pincus Partners, L.P., its managing member
	By: Warburg Pincus Partners GP LLC, its general partner
	By: Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
	Name:	Xxxxxx X. Xxxxxx
	Title:	Partner

	WPP GP LLC
	By: Warburg Pincus Partners, L.P., its managing member
	By: Warburg Pincus Partners GP LLC, its general partner
	By: Warburg Pincus & Co., its managing member
	By:		/s/ Xxxxxx X. Xxxxxx
	Name:		Xxxxxx X. Xxxxxx
	Title:		Partner
	WARBURG PINCUS PARTNERS, L.P.
	By: Warburg Pincus Partners GP LLC, its general partner
	By: Warburg Pincus & Co., its managing member
	By:		/s/ Xxxxxx X. Xxxxxx
	Name:		Xxxxxx X. Xxxxxx
	Title:		Partner
	WARBURG PINCUS PARTNERS GP LLC
	By: Warburg Pincus & Co., its managing member
	By:		/s/ Xxxxxx X. Xxxxxx
	Name:		Xxxxxx X. Xxxxxx
	Title:		Partner
	WARBURG PINCUS & CO.
	By:		/s/ Xxxxxx X. Xxxxxx
	Name:		Xxxxxx X. Xxxxxx
	Title:		Partner
	WARBURG PINCUS LLC
	By:		/s/ Xxxxxx X. Xxxxxx
	Name:		Xxxxxx X. Xxxxxx
	Title:		Managing Director
	XXXXXXX X. XXXX
	By:	/s/ Xxxxxx X. Xxxxxx
		Xxxxxx X. Xxxxxx, Attorney-in-fact*
	XXXXXX X. XXXXX
	By:	/s/ Xxxxxx X. Xxxxxx
		Xxxxxx X. Xxxxxx, Attorney-in-fact*

* The Power of Attorney given by each of Xx. Xxxx and Xx. Xxxxx was previously filed with the U.S. Securities and Exchange Commission on November 26, 2013 as an exhibit to a statement on Form 4 filed by Warburg Pincus Private Equity IX, L.P. with respect to Laredo Petroleum Holdings, Inc. (now known as Laredo Petroleum, Inc.) and is hereby incorporated by reference.