Blackstone Holdings III SC 13G/A Hilton Worldwide Holdings Inc.

Exhibit 99.A

Exhibit A

JOINT FILING AGREEMENT

Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder (the “Exchange Act”) the undersigned hereby agree to the joint filing of HLT Holdco III LLC; HLT Holdco II LLC; HLT BREP VI.TE.2 Holdco LLC; Blackstone Real Estate Partners VI.TE.2 L.P.; HLT BREH VI Holdco LLC; HLT BREH VI Holdings Holdco LLC; Blackstone Real Estate Holdings VI L.P.; HLT BREH Intl II Holdco LLC; HLT BREH Intl II Holdings Holdco LLC; Blackstone Real Estate Holdings International II-Q L.P.; Blackstone Real Estate International II-Q GP L.P.; Blackstone Real Estate International II-Q GP L.L.C.; BREP VI Side-by-Side GP L.L.C.; HLT Holdco LLC; Blackstone A23 Holdings LLC; BH Hotels Holdco LLC; Blackstone Real Estate Partners VI L.P.; Blackstone Capital Partners V L.P.; Blackstone Management Associates V L.L.C.; BMA V L.L.C.; Blackstone Real Estate Associates VI L.P.; BREA VI L.L.C.; Blackstone Holdings III L.P.; Blackstone Holdings III GP L.P.; Blackstone Holdings III GP Management L.L.C.; The Blackstone Group L.P.; Blackstone Group Management L.L.C. and Stephen A. Schwarzman, on behalf of each of them of any filing required by such party under Section 13 of the Exchange Act or any rule or regulation thereunder (including any amendment, restatement, supplement, and/or exhibit thereto) with respect to securities of Hilton Worldwide Holdings Inc., a Delaware corporation, and further agree to the filing, furnishing, and/or incorporation by reference of this Agreement as an exhibit thereto. Each of them is responsible for the timely filing of such filings and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate. This Agreement shall remain in full force and effect until revoked by any party hereto in a signed writing provided to each other party hereto, and then only with respect to such revoking party. This Agreement may be executed in any number of counterparts all of which taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement this 3rd day of July 2014.

HLT HOLDCO III LLC
By:	HLT Holdco II LLC, its sole member
By:	HLT Holdco LLC, its sole member
By:	BH Hotels Holdco LLC, its sole member
	By:	Blackstone Real Estate Partners VI L.P., its managing member
	By:	Blackstone Real Estate Associates VI L.P., its general partner
	By:	BREA VI L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
	By:	Blackstone Capital Partner V L.P., its managing member
	By:	Blackstone Management Associates V L.L.C., its general partner
	By:	BMA V L.L.C., its sole member
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
HLT HOLDCO II LLC
By:	HLT Holdco LLC, its sole member
By:	BH Hotels Holdco LLC, its sole member
	By:	Blackstone Real Estate Partners VI L.P., its managing member
	By:	Blackstone Real Estate Associates VI L.P., its general partner
	By:	BREA VI L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
	By:	Blackstone Capital Partner V L.P., its managing member
	By:	Blackstone Management Associates V L.L.C., its general partner
	By:	BMA V L.L.C., its sole member
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
HLT BREP VI.TE.2 HOLDCO LLC
By:	Blackstone Real Estate Partners VI.TE.2 L.P.
By:	Blackstone Real Estate Associates VI L.P., its general partner
By:	BREA VI L.L.C., its general partner

By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer

[Hilton Worldwide Holdings Inc. - Joint Filing Agreement]

BLACKSTONE REAL ESTATE PARTNERS VI.TE.2 L.P.
By:	Blackstone Real Estate Associates VI L.P., its general partner
By:	BREA VI L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BLACKSTONE REAL ESTATE HOLDINGS VI L.P.
By:	BREP VI Side-by-Side GP L.L.C.
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BREP VI SIDE-BY-SIDE GP L.L.C.
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
HLT BREH INTL II HOLDCO LLC
By:	HLT BREH Intl II Holdings Holdco LLC, its sole member
By:	Blackstone Real Estate Holdings International II-Q L.P., its managing member
By:	Blackstone Real Estate International II-Q GP L.P., its general partner
By:	Blackstone Real Estate International II-Q GP L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
HLT BREH INTL II HOLDINGS HOLDCO LLC
By:	Blackstone Real Estate Holdings International II-Q L.P., its managing member
By:	Blackstone Real Estate International II-Q GP L.P., its general partner
By:	Blackstone Real Estate International II-Q GP L.L.C., its managing member
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer

[Hilton Worldwide Holdings Inc. - Joint Filing Agreement]

BLACKSTONE REAL ESTATE HOLDINGS INTERNATIONAL II-Q L.P.
By:	Blackstone Real Estate International II-Q GP L.P., its general partner
By:	Blackstone Real Estate International II-Q GP L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BLACKSTONE REAL ESTATE INTERNATIONAL II-Q GP L.P.
By:	Blackstone Real Estate International II-Q GP L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BLACKSTONE REAL ESTATE INTERNATIONAL II-Q GP L.L.C.
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
HLT HOLDCO LLC
	By:	BH Hotels Holdco LLC, its sole member
		By:	Blackstone Real Estate Partners VI L.P., its managing member
		By:	Blackstone Real Estate Associates VI L.P., its general partner
		By:	BREA VI L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
		By:	Blackstone Capital Partner V L.P., its managing member
		By:	Blackstone Management Associates V L.L.C., its general partner
		By:	BMA V L.L.C., its sole member
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer

[Hilton Worldwide Holdings Inc. - Joint Filing Agreement]

BLACKSTONE A23 HOLDINGS LLC
	By:	Blackstone Real Estate Partners VI L.P., its managing member
	By:	Blackstone Real Estate Associates VI L.P, its general partner
	By:	BREA VI L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
	By:	Blackstone Capital Partner V L.P., its managing member
	By:	Blackstone Management Associates V L.L.C., its general partner
	By:	BMA V L.L.C., its sole member
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BH HOTELS HOLDCO LLC
	By:	Blackstone Real Estate Partners VI L.P., its managing member
	By:	Blackstone Real Estate Associates VI L.P, its general partner
	By:	BREA VI L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
	By:	Blackstone Capital Partner V L.P., its managing member
	By:	Blackstone Management Associates V L.L.C., its general partner
	By:	BMA V L.L.C., its sole member
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BLACKSTONE REAL ESTATE PARTNERS VI L.P.
	By:	Blackstone Real Estate Associates VI L.P., its general partner
	By:	BREA VI L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer

[Hilton Worldwide Holdings Inc. - Joint Filing Agreement]

BLACKSTONE REAL ESTATE ASSOCIATES VI L.P.
	By:	BREA VI L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BREA VI L.L.C.
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BLACKSTONE CAPITAL PARTNERS V L.P.
	By:	Blackstone Management Associates V, L.L.C., its general partner
	By:	BMA V, L.L.C., its sole member
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BLACKSTONE MANAGEMENT ASSOCIATES V L.L.C.
By:	BMA V, L.L.C., its sole member
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BMA V L.L.C.
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BLACKSTONE HOLDINGS III L.P.
By:	Blackstone Holdings III GP L.P., its general partner
By:	Blackstone Holdings III GP Management L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer

[Hilton Worldwide Holdings Inc. - Joint Filing Agreement]

BLACKSTONE HOLDINGS III GP L.P.
By:	Blackstone Holdings III GP Management L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BLACKSTONE HOLDINGS III GP MANAGEMENT L.L.C.
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
THE BLACKSTONE GROUP L.P.
By:	Blackstone Group Management L.L.C., its general partner
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
BLACKSTONE GROUP MANAGEMENT L.L.C.
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
STEPHEN A. SCHWARZMAN
By:	/s/ Stephen A. Schwarzman
Name:	Stephen A. Schwarzman

[Hilton Worldwide Holdings Inc. - Joint Filing Agreement]