ZS PHARMA INC

CUSIP: 98979G105 Class: Cmn

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AM's Holding History (CIK: 0001132716)

Note: Option positions (PUT/CALL) are excluded.

Q3 2015
Shares 8,151 Value ($000) $535,000 Avg Close — Range —
Q1 2015
Shares 124,569 Value ($000) $5,242,000 Avg Close — Range —
Q4 2014
Shares 12,500 Value ($000) $520,000 Avg Close — Range —