MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

Liberty Mutual Group Asset Management Inc.'s Holding History (CIK: 0001533497)

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

Q3 2015
Shares 37,902 Value ($000) $1,626 Avg Close — Range —
Q2 2015
Shares 50,377 Value ($000) $2,840 Avg Close — Range —
Q1 2015
Shares 41,300 Value ($000) $2,730 Avg Close — Range —
Q4 2014
Shares 34,800 Value ($000) $2,338 Avg Close — Range —
Q3 2014
Shares 34,800 Value ($000) $2,673 Avg Close — Range —
Q2 2014
Shares 34,800 Value ($000) $2,491 Avg Close — Range —
Q1 2014
Shares 54,000 Value ($000) $3,527 Avg Close — Range —
Q4 2013
Shares 55,253 Value ($000) $3,654 Avg Close — Range —
Q3 2013
Shares 105,344 Value ($000) $7,609 Avg Close — Range —
Q2 2013
Shares 103,091 Value ($000) $6,892 Avg Close — Range —