MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

COMMERCE BANK's Holding History (CIK: 0001009076)

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

Q1 2015
Shares 3,224 Value ($000) $214 Avg Close — Range —
Q4 2014
Shares 3,614 Value ($000) $243 Avg Close — Range —
Q3 2014
Shares 3,324 Value ($000) $255 Avg Close — Range —
Q2 2014
Shares 3,324 Value ($000) $238 Avg Close — Range —
Q1 2014
Shares 3,124 Value ($000) $204 Avg Close — Range —
Q4 2013
Shares 3,124 Value ($000) $206 Avg Close — Range —
Q3 2013
Shares 3,124 Value ($000) $225 Avg Close — Range —
Q2 2013
Shares 3,324 Value ($000) $202 Avg Close — Range —