MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

BOKF, NA's Holding History (CIK: 0000009634)

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

Q3 2015
Shares 21,973 Value ($000) $943 Avg Close — Range —
Q2 2015
Shares 22,823 Value ($000) $1,287 Avg Close — Range —
Q1 2015
Shares 23,073 Value ($000) $1,525 Avg Close — Range —
Q4 2014
Shares 15,689 Value ($000) $1,054 Avg Close — Range —
Q3 2014
Shares 19,049 Value ($000) $1,463 Avg Close — Range —
Q2 2014
Shares 23,037 Value ($000) $1,649 Avg Close — Range —
Q1 2014
Shares 23,354 Value ($000) $1,525 Avg Close — Range —
Q4 2013
Shares 21,108 Value ($000) $1,396 Avg Close — Range —
Q3 2013
Shares 16,091 Value ($000) $1,162 Avg Close — Range —
Q2 2013
Shares 16,091 Value ($000) $1,076 Avg Close — Range —