U S SILICA HLDGS INC

CUSIP: 90346E103 Class: Common Stock

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

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

Q3 2016
Shares 213,422 Value ($000) $9,937,000 Avg Close — Range —
Q2 2016
Shares 131,277 Value ($000) $4,525,000 Avg Close — Range —
Q1 2016
Shares 170,528 Value ($000) $3,874,000 Avg Close — Range —
Q4 2015
Shares 240,408 Value ($000) $4,503,000 Avg Close — Range —
Q2 2015
Shares 118,727 Value ($000) $3,486,000 Avg Close — Range —
Q4 2014
Shares 45,312 Value ($000) $1,164,000 Avg Close — Range —
Q2 2013
Shares 37,187 Value ($000) $773,000 Avg Close — Range —