U S SILICA HLDGS INC

CUSIP: 90346E103 Class: Common Stock

MAIRS & POWER INC's Holding History (CIK: 0001070134)

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

Q2 2014
Shares 5,400 Value ($000) $299 Avg Close — Range —
Q1 2014
Shares 5,400 Value ($000) $206 Avg Close — Range —
Q4 2013
Shares 15,000 Value ($000) $512 Avg Close — Range —