EXHIBIT A

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 Blackstone Healthcare Partners L.L.C.; Blackstone Capital Partners V L.P.; Blackstone Management Associates V L.L.C.; BMA V 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 Catalent, 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 17^th day of February 2015.


BLACKSTONE HEALTHCARE PARTNERS L.L.C. By: Blackstone Capital Partners 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: Title:		John G. Finley 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: Title:		John G. Finley 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


BLACKSTONE HOLDINGS III GP L.P. By: Blackstone Holdings III GP Management L.L.C., its general partner

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

BLACKSTONE HOLDINGS III GP MANAGEMENT L.L.C.

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

THE BLACKSTONE GROUP L.P.
By: Blackstone Group Management L.L.C., its general partner

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

BLACKSTONE GROUP MANAGEMENT L.L.C.

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

STEPHEN A. SCHWARZMAN

/s/ Stephen A. Schwarzman
Name:		Stephen A. Schwarzman