0001179110-13-000127.txt : 20130102 0001179110-13-000127.hdr.sgml : 20130101 20130102182755 ACCESSION NUMBER: 0001179110-13-000127 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20130102 FILED AS OF DATE: 20130102 DATE AS OF CHANGE: 20130102 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: MOLLENKOPF JOHN C CENTRAL INDEX KEY: 0001235082 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-31239 FILM NUMBER: 13503278 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE ST. STREET 2: TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202 4 1 edgar.xml FORM 4 - X0306 4 2013-01-02 0 0001166036 MARKWEST ENERGY PARTNERS L P MWE 0001235082 MOLLENKOPF JOHN C C/O MARKWEST ENERGY PARTNERS, L.P. 1515 ARAPAHOE ST. TWR 1, STE 1600 DENVER CO 80202 0 1 0 0 SVP, Chief Operating Officer Common Units 2013-01-02 4 S 0 10000 52.00 D 281870 D Sales were effected pursuant to instructions given by the reporting person on August 8, 2012, 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 John Mollenkopf 2013-01-02