MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

FIRST MANHATTAN CO. LLC.'s Holding History (CIK: 0000728083)

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

Q3 2015
Shares 2,374 Value ($000) $101 Avg Close — Range —
Q2 2015
Shares 2,374 Value ($000) $133 Avg Close — Range —
Q1 2015
Shares 73,209 Value ($000) $4,839 Avg Close — Range —
Q4 2014
Shares 81,959 Value ($000) $5,506 Avg Close — Range —
Q3 2014
Shares 83,209 Value ($000) $6,392 Avg Close — Range —
Q2 2014
Shares 83,796 Value ($000) $5,998 Avg Close — Range —
Q1 2014
Shares 79,396 Value ($000) $5,186 Avg Close — Range —
Q4 2013
Shares 75,925 Value ($000) $5,020 Avg Close — Range —
Q3 2013
Shares 45,725 Value ($000) $3,302 Avg Close — Range —
Q2 2013
Shares 45,318 Value ($000) $3,047 Avg Close — Range —