MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

Washington Trust Bank's Holding History (CIK: 0000861787)

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

Q1 2015
Shares 865 Value ($000) $57 Avg Close — Range —
Q4 2014
Shares 865 Value ($000) $58 Avg Close — Range —
Q3 2014
Shares 865 Value ($000) $66 Avg Close — Range —
Q2 2014
Shares 865 Value ($000) $62 Avg Close — Range —
Q1 2014
Shares 865 Value ($000) $57 Avg Close — Range —