Walgreen (WAG) SC 13D/A Amerisourcebergen Corp

Exhibit 99.12

JOINT FILING AGREEMENT

JOINT FILING AGREEMENT, dated as of January 16, 2015, by and among (i) WAB Holdings LLC, a Delaware limited liability company (“WAB Holdings”); (ii) Walgreens Pharmacy Strategies, LLC, an Illinois limited liability company (“WPS”); (iii) Bond Drug Company of Illinois, LLC, an Illinois limited liability company (“Bond Drug”); (iv) Walgreen Eastern Co., Inc., a New York corporation (“WEC”); (v) Walgreen Arizona Drug Co., an Arizona corporation (“WADC”); (vi) Walgreen Hastings Co., a Nebraska corporation (“WHC”); (vii) Walgreen International Investments LLC, a Delaware limited liability company (“Walgreen International Investments”); (viii) WBA Investments LLC, a Delaware limited liability company (“WBA Investments”); (ix) Walgreen Co., an Illinois corporation (“Walgreen”); (x) Alliance Boots Luxembourg S.à r.l, a Luxembourgsociété à responsabilité limitée (limited liability company) (“AB Luxembourg”); (xi) Alliance Boots Holdings Limited, a private limited liability company organized under the laws of England and Wales (“AB Holdings”); (xii) AB Acquisitions UK Holdco 7 Limited, a private limited liability company organized under the laws of England and Wales (“AB UK Holdco 7”); (xiii) AB Acquisitions Limited, a private limited liability company organized under the laws of England and Wales (“AB Acquisitions”); (xiv) Alliance Boots International Limited, a private limited liability company organized under the laws of England and Wales (“AB International”); (xv) Alliance Boots Limited, a private limited liability company organized under the laws of England and Wales (“AB Limited”); (xvi) AB Acquisitions UK Topco Limited, a private limited liability company organized under the laws of England and Wales (“AB UK Topco”); (xvii) AB Acquisitions Luxco 1 S.à r.l., a Luxembourgsociété à responsabilité limitée (limited liability company) (“AB Luxco 1”); (xviii) Alliance Boots GmbH, a SwissGesellschaft mit beschränkter Haftung (limited liability company) (“Alliance Boots”); (xix) Walgreen Swiss International GmbH, a SwissGesellschaft mit beschränkter Haftung (limited liability company) (“Walgreen Swiss”); (xx) Ontario Holdings WBA Limited, a private limited liability company organized under the laws of England and Wales (“Ontario”); (xxi) Walgreen International S.à r.l., a Luxembourgsociété à responsabilité limitée (limited liability company) (“Walgreen International”); (xxii) Superior Bermuda GP, a Bermuda General Partnership (“Superior Bermuda”); (xxiii) Superior Luxco 3 S.à r.l., a Luxembourgsociété à responsabilité limitée (limited liability company) (“Superior Luxco 3”); (xxiv) Walgreens Boots Alliance Scottish LP, a private limited partnership organized under the laws of England and Wales (“WBA Scottish”); (xxv) WBA 1 Scottish LLP, a private limited liability partnership organized under the laws of England and Wales (“WBA Scottish 1”); (xxvi) Superior Luxco 2 S.à r.l., a Luxembourgsociété à responsabilité limitée (limited liability company) (“Superior Luxco 2”); (xxvii) Superior Luxco 1 S.à r.l., a Luxembourgsociété à responsabilité limitée (limited liability company) (“Superior Luxco 1”); (xxviii) Walgreen Investments Luxembourg SCS, a Luxembourgsociété en commandite simple(limited partnership) (“Walgreen Investments Lux”); (xxix) Walgreen Investments Co, a Delaware corporation (“WIC”) ; and (xxx) Walgreens Boots Alliance, Inc. a Delaware Corporation (“WBA”). WAB Holdings, WPS, Bond Drug, WEC, WADC, WHC, Walgreen International Investments, WBA Investments, Walgreen, AB Luxembourg, AB Holdings, AB UK Holdco, AB Acquisitions, AB International, AB Limited, AB UK Topco, AB Luxco 1, Alliance Boots, Walgreen Swiss, Ontario, Walgreen International, Superior Bermuda, Superior Luxco 2, WBA Scottish, WBA Scottish 1, Superior Luxco 3, Superior Luxco 1, Walgreen Investments Lux and WBA are collectively referred to as the “Reporting Persons.”

WHEREAS, each of the Reporting Persons beneficially owns (or may be deemed to beneficially own, as applicable) shares of common stock, par value $0.01 per share (“Common Stock”), of AmerisourceBergen Corporation, a Delaware corporation (the “Issuer”); and

WHEREAS, the Reporting Persons may be deemed to constitute a “group” with respect to the beneficial ownership of the Common Stock for purposes of Rule 13d-1 and Schedule 13D promulgated by the Securities and Exchange Commission.

NOW, THEREFORE, the parties hereto agree as follows:

1. The Reporting Persons (collectively, the “Reporting Group”) shall prepare a single statement containing the information required by Schedule 13D with respect to their respective interests in the Common Stock, including any amendments thereto (the “Reporting Group Schedule 13D”), and the Reporting Group Schedule 13D shall be filed on behalf of each of them.

2. Each member of the Reporting Group shall be responsible for the timely filing of the Reporting Group Schedule 13D and any necessary amendments thereto, and for the completeness and accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning any other party contained therein, except to the extent that he or it knows or has reason to believe that such information is inaccurate.

3. This Agreement shall continue unless terminated by any party hereto.

4. Thomas J. Sabatino, Jr. shall be designated as the person authorized to receive notices and communications with respect to the Reporting Group Schedule 13D and any amendments thereto.

5. This Agreement may be executed in counterparts, each of which taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned have executed this Agreement as of the date first above written.

WAB HOLDINGS LLC
By:	/s/ Dan Morrell
Name:	Dan Morrell
Title:	Manager
By:	/s/ Jason Dubinsky
Name:	Jason Dubinsky
Title:	Manager
By:	/s/ Marco Pagni
Name:	Marco Pagni
Title:	Manager
By:	/s/ Gordon Farquhar
Name:	Gordon Farquhar
Title:	Manager
WALGREENS PHARMACY STRATEGIES, LLC
By:	/s/ John A. Mann
Name:	John A. Mann
Title:	Vice President
BOND DRUG COMPANY OF ILLINOIS, LLC
By:	/s/ John A. Mann
Name:	John A. Mann
Title:	Vice President

WALGREEN EASTERN CO., INC.
By:	/s/ John A. Mann
Name:	John A. Mann
Title:	Vice President
WALGREEN ARIZONA DRUG CO.
By:	/s/ John A. Mann
Name:	John A. Mann
Title:	Vice President
WALGREEN HASTINGS CO.
By:	/s/ John A. Mann
Name:	John A. Mann
Title:	Vice President
WALGREEN INTERNATIONAL INVESTMENTS LLC
By: Walgreen Investments Co, Member
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	President
WBA INVESTMENTS, LLC
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	President

WALGREEN CO.
By:	/s/ John A. Mann
Name:	John A. Mann
Title:	Assistant Secretary
ALLIANCE BOOTS LUXEMBOURG S.à r.l
By:	/s/ Wolfgang Zettel
Name:	Wolfgang Zettel
Title:	Manager
By:	/s/ Jean-Paul Goerens
Name:	Jean-Paul Goerens
Title:	Manager
ALLIANCE BOOTS HOLDINGS LIMITED
By:	/s/ Frank Standish
Name:	Frank Standish
Title:	Director
AB ACQUISITIONS UK HOLDCO 7 LIMITED
By:	/s/ Frank Standish
Name:	Frank Standish
Title:	Director
AB ACQUISITIONS LIMITED
By:	/s/ Frank Standish
Name:	Frank Standish
Title:	Director

ALLIANCE BOOTS INTERNATIONAL LIMITED
By:	/s/ Marco Pagni
Name:	Marco Pagni
Title:	Director
ALLIANCE BOOTS LIMITED
By:	/s/ Frank Standish
Name:	Frank Standish
Title:	Director
AB ACQUISITIONS UK TOPCO LIMITED
By:	/s/ Frank Standish
Name:	Frank Standish
Title:	Director
AB ACQUISITIONS LUXCO 1 S.à r.l
By:	/s/ Wolfgang Zettel
Name:	Wolfgang Zettel
Title:	Manager
By:	/s/ Jean-Paul Goerens
Name:	Jean-Paul Goerens
Title:	Manager
ALLIANCE BOOTS GmbH
By:	/s/ Frank Standish
Name:	Frank Standish
Title:	Director

WALGREEN SWISS INTERNATIONAL GmbH
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	Director
ONTARIO HOLDINGS WBA LIMITED
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	Director
WALGREEN INTERNATIONAL S.à r.l
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	Manager
SUPERIOR BERMUDA GP
By: Superior Luxco 3 S.à r.l, Partner
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	Manager
SUPERIOR LUXCO 3 S.à r.l
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	Manager

WALGREENS BOOTS ALLIANCE SCOTTISH LP
By: Superior Luxco 1 S.à r.l, Partner
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	Manager
WBA 1 SCOTTISH LLP
By: Superior Luxco 1 S.à r.l, Partner
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	Manager
SUPERIOR LUXCO 2 S.à r.l
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	Manager
SUPERIOR LUXCO 1 S.à r.l
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	Manager
WALGREEN INVESTMENTS LUXEMBOURG SCS
By: WBA Investments, LLC, Partner
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	President

WALGREEN INVESTMENTS CO
By:	/s/ Joseph H. Greenberg
Name:	Joseph H. Greenberg
Title:	President
WALGREENS BOOTS ALLIANCE, INC.
By:	/s/ Thomas J. Sabatino, Jr.
Name:	Thomas J. Sabatino, Jr.
Title:	Executive Vice President, Global Chief Legal and Administrative Officer and Corporate Secretary