JOINT FILING AGREEMENT
Exhibit 3
Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required by Schedule 13D need be filed with respect to the ownership by each of the undersigned of shares of stock of ZS Pharma, Inc.
Dated: November 13, 2015
| ZANZIBAR ACQUISITION CORP. | ||
| By: | /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇ | |
| Name: | ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇ | |
| Title: | Chairman, President and Treasurer | |
| ZENECA, INC. | ||
| By: | /s/ ▇▇▇ ▇▇▇▇▇-▇▇▇▇▇▇▇▇ | |
| Name: | ▇▇▇ ▇▇▇▇▇-▇▇▇▇▇▇▇▇ | |
| Title: | Assistant Secretary | |
| ZENECA HOLDINGS, INC. | ||
| By: | /s/ ▇▇▇ ▇▇▇▇▇-▇▇▇▇▇▇▇▇ | |
| Name: | ▇▇▇ ▇▇▇▇▇-▇▇▇▇▇▇▇▇ | |
| Title: | Assistant Secretary | |
| ASTRAZENECA HOLDINGS BV | ||
| By: | /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇ | |
| Name: | ▇▇▇▇▇ ▇▇▇▇▇▇▇▇ | |
| Title: | Director | |
| ASTRAZENECA TREASURY LIMITED | ||
| By: | /s/ ▇▇▇▇▇▇ ▇▇▇▇ | |
| Name: | ▇▇▇▇▇▇ ▇▇▇▇ | |
| Title: | Director | |
| ASTRAZENECA UK LIMITED | ||
| By: | /s/ ▇▇▇▇ ▇▇▇▇▇▇▇ | |
| Name: | ▇▇▇▇ ▇▇▇▇▇▇▇ | |
| Title: | Director | |
| ASTRAZENECA INTERMEDIATE HOLDINGS PLC | ||
| By: | /s/ ▇▇▇▇ ▇▇▇▇▇▇▇ | |
| Name: | ▇▇▇▇ ▇▇▇▇▇▇▇ | |
| Title: | Director | |
| ASTRAZENECA PLC | ||
| By: | /s/ ▇▇▇▇ ▇▇▇▇▇▇▇ | |
| Name: | ▇▇▇▇ ▇▇▇▇▇▇▇ | |
| Title: | Director | |