ATE ON AVG COLLECTED BALANCE OF 538,715.95 AS OF 05/01/13 0.30 5/3 Accrued IM Paid MARKWEST ENERGY PART FIN 63/4% NOV01 2020 DTD 11/02/2010 11/ 112.00 SEAPORT GROUP SECURITIES, LLC TRADE DATE 04/30/13 (ID: 570506-AM-7) 5,000.000 0.00 0S% 5/6 Accrued IM Reed US STEEL CORP SR NOTES 7 3/8% APR 01 2020 DTD 1,000000 0.0