| Accession Number: | 0001179110-14-012256 |
| Date: | 2014-08-01 |
| Issuer: | MARKWEST ENERGY PARTNERS L P (MWE) |
| Original Submission Date: |
NICKERSON RANDY S
C/O MARKWEST ENERGY PARTNERS, L.P.
1515 ARAPAHOE ST. TWR 1, STE 1600
DENVER, CO 80202
| Title of Security | Transaction Date | 2a. Deemed Execution Date | Transaction Code | Shares | Acquired or Disposed | Price per share | 5. Amount of Securities Beneficially Owned Following Reported Transaction | 6. Ownership Form Direct or Indirect | Nature of Indirect Ownership |
|---|---|---|---|---|---|---|---|---|---|
| COMMON UNITS | 2014-08-01 | S | 1,700 | d | $68.41 | 218,909 | direct |
| Title of Derivative Security | Conversion or Exercise Price of Derivative Security | Transaction Date | Deemed Execution Date | Transaction Code | Number of Derivative Securities Acquired (A) or Disposed of (D) | Date Exercisable | Expiration Date | Title and Amount of Securities Underlying Derivative Security | Price of Derivative Security | Number of derivative Securities Beneficially Owned Following Reported Transaction(s) | Ownership Form: Direct (D) or Indirect (I) | Nature of Indirect Beneficial Ownership |
|---|
| ID | footnote |
|---|---|
| f1 | sales were effected pursuant to instructions given by the reporting person on march 13, 2014, pursuant to a rule 10b5-1 trading plan. |
| f2 | amount of securities beneficially owned following the reported transaction(s) includes common units owned and restricted units subject to varying vesting terms. |
