U S SILICA HLDGS INC

CUSIP: 90346E103 Class: Common Stock

PFM Health Sciences, LP's Holding History (CIK: 0001442756)

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

Q1 2017
Shares 1,350,636 Value ($000) $64,817 Avg Close — Range —
Q4 2016
Shares 856,871 Value ($000) $48,567 Avg Close — Range —
Q3 2016
Shares 421,848 Value ($000) $19,641 Avg Close — Range —
Q2 2016
Shares 382,341 Value ($000) $13,179 Avg Close — Range —