MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

Zimmer Partners, LP's Holding History (CIK: 0001565854)

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

Q3 2015
Shares 420,442 Value ($000) $18,041 Avg Close — Range —
Q2 2015
Shares 448,641 Value ($000) $25,294 Avg Close — Range —
Q1 2015
Shares 75,000 Value ($000) $4,958 Avg Close — Range —
Q4 2014
Shares 294,679 Value ($000) $19,799 Avg Close — Range —