ALLERGAN LETTERHEAD]

Exhibit 99.4

EXECUTION VERSION

[ALLERGAN LETTERHEAD]

Teva Pharmaceutical Industries Ltd.

0 Xxxxx Xxxxxx

Xxxxxx Xxxxx 0000000

Xxxxxx

Attention: Xxxxxxx X. Xxxxx,

                 Chief Legal Officer

Re. Extension of Outside Date

Dear Xx. Xxxxx:

1. Reference is made to the Master Purchase Agreement dated as of July 26, 2015 by and between Allergan plc (“Allergan”) and Teva Pharmaceutical Industries Ltd. (“Teva”), as amended from time to time (the “Agreement”). Capitalized terms used in this letter agreement (this “Letter”) and not defined herein are used with the meaning so defined in the Agreement.

2. Pursuant to Section 11.1(b) of the Agreement, either Party may extend the Outside Date to October 26, 2016 by delivering notice to the other Party within three business days immediately prior to July 26, 2016 if the conditions set forth in Section 10.1(b) have not been satisfied or waived but all other conditions to the Closing have been satisfied or waived (other than those conditions that by their nature are to be satisfied at the Closing). The Parties hereby agree (1) to waive the notice requirement in Section 11.1(b) of the Agreement, (2) to extend the Outside Date to October 26, 2016 effective immediately, and (3) neither Party has waived any other condition to extending the Outside Date set forth in Section 11.1(b) of the Agreement.

3. Allergan and Teva may execute this Letter in one or more counterparts, each of which will be deemed an original and all of which, when taken together, will be deemed to constitute one and the same agreement. Any signature page hereto delivered by facsimile machine or by e-mail (including in portable document format (pdf), as a joint photographic experts group (jpg) file, or otherwise) shall be binding to the same extent as an original signature page, with regard to any agreement subject to the terms hereof or any amendment thereto and may be used in lieu of the original signatures for all purposes. Any party that delivers such a signature page agrees to later deliver an original counterpart to any party that requests it.

4. The provisions of Sections 13.9, 13.10 and 13.16 of the Agreement shall apply mutatis mutandis to this Letter.

(Signature page follows)

SELLER PARENT
ALLERGAN PLC
By:		/s/ A. Xxxxxx X. Xxxxxx
Name:		A. Xxxxxx X. Xxxxxx
Title:		EVP, Chief Legal Officer and Corporate Secretary

Acknowledged and accepted:

BUYER PARENT

TEVA PHARMACEUTICAL INDUSTRIES LTD

By:		/s/ Xxxx Xxxxxx
Name:		Xxxx Xxxxxx
Title:		Group Executive Vice President and Chief Financial Officer
By:		/s/ Xxxxx X. Xxxxx
Name:		Xxxxx X. Xxxxx
Title:		Deputy Chief Legal Officer, Senior Vice President and Global Markets General Counsel

Cc: Xxxxxxxx & Xxxxxxxx LLP

000 Xxxxx Xxxxxx

Xxx Xxxx, XX 00000

Attn: Xxxxxx X. Xxxxxxx

         Xxxx X. Xxxxxxxxxxx

         Xxxxxxx Xxxxxxxxxxxxx

Facsimile: (000) 000-0000

Xxxxxx & Xxxxxxx LLP

000 Xxxxx Xxxxxx

Xxx Xxxx, XX 00000-0000

Attn: Xxxxxxx X. Xxxx

         R. Xxxxx Xxxxx

Facsimile: x0 (000) 000-0000

[Signature page to outside date extension side letter]