0001179110-13-014181.txt : 20130913 0001179110-13-014181.hdr.sgml : 20130913 20130913163240 ACCESSION NUMBER: 0001179110-13-014181 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20130912 FILED AS OF DATE: 20130913 DATE AS OF CHANGE: 20130913 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: MARKWEST ENERGY PARTNERS L P CENTRAL INDEX KEY: 0001166036 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] IRS NUMBER: 270005456 FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 1, SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 1, SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Buese Nancy CENTRAL INDEX KEY: 0001344601 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-31239 FILM NUMBER: 131096658 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET CITY: DENVER STATE: CO ZIP: 80202-2126 FORMER NAME: FORMER CONFORMED NAME: Masten Nancy DATE OF NAME CHANGE: 20051116 4 1 edgar.xml FORM 4 - X0306 4 2013-09-12 0 0001166036 MARKWEST ENERGY PARTNERS L P MWE 0001344601 Buese Nancy C/O MARKWEST ENERGY PARTNERS, L.P. 1515 ARAPAHOE ST. TWR 1 STE 1600 DENVER CO 80202 0 1 0 0 EVP, Chief Financial Officer Common Units 2013-09-12 4 S 0 5000 69.52 D 107065 D Sales were effected pursuant to instructions given by the reporting person on August 12, 2013, pursuant to a Rule 10b5-1 trading plan. Amount of securities beneficially owned following the reported transaction(s) includes Common Units owned and Restricted Units subject to varying vesting terms. /s/ Sean M. McKendry as POA for Nancy K. Buese 2013-09-13