MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

SILVERCREST ASSET MANAGEMENT GROUP LLC's Holding History (CIK: 0001232395)

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

Q3 2015
Shares 15,849 Value ($000) $680 Avg Close — Range —
Q2 2015
Shares 13,599 Value ($000) $767 Avg Close — Range —
Q1 2015
Shares 16,599 Value ($000) $1,097 Avg Close — Range —
Q4 2014
Shares 17,937 Value ($000) $1,205 Avg Close — Range —
Q3 2014
Shares 11,599 Value ($000) $891 Avg Close — Range —
Q2 2014
Shares 16,599 Value ($000) $1,188 Avg Close — Range —
Q1 2014
Shares 10,299 Value ($000) $673 Avg Close — Range —
Q4 2013
Shares 10,299 Value ($000) $681 Avg Close — Range —
Q3 2013
Shares 7,599 Value ($000) $549 Avg Close — Range —
Q2 2013
Shares 6,846 Value ($000) $458 Avg Close — Range —