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Investor FAQs

General/Corporate
Company Inquiries
Distributions
Unit Split
Tax Information
Transfer Agent
General MLP Questions

General/Corporate
Where is MarkWest's corporate headquarters?
Denver, Colorado
When was your initial public offering (IPO) and what was the initial unit price?
MarkWest completed an IPO on May 24, 2002 at an initial unit price of $10.25 (split-adjusted from $20.50 per unit).
What is MarkWest’s fiscal year end?
December 31st
How are MarkWest units traded?
MarkWest Energy Partners, L.P. is publicly traded on the New York Stock Exchange under the ticker symbol “MWE.”

Company Inquiries
How many employees does MarkWest have?
More than 900
Where can I get the latest corporate news releases?
You may download electronic copies from the Investor Relations section of our website under News Releases.
How do I obtain copies of your annual reports, quarterly reports, and SEC filings?
You may download electronic copies from the Investor Relations section of our website under Financial Reports and SEC Filings.
Who makes up the MarkWest Management Team and Board of Directors?
You may view the members of our Management Team and Board of Directors under the About Us section of our website.
How can I obtain further information or materials on MarkWest?
For general company information, please call (800) 730-8388.
For investor-related questions, please call (866) 858-0482 or email us at investorrelations@markwest.com.

Distributions
Does MarkWest pay distributions?
Yes, on a quarterly basis
What is the current distribution rate for one unit of MarkWest?
You may view a schedule historical distributions from the Investor Relations section of our website under Historical Distributions.
Does MarkWest have a distribution reinvestment plan (DRIP) and how can I participate?
MarkWest does not currently offer a DRIP.
When are distributions usually paid?
MarkWest pays distributions on a quarterly basis within 45 days after the end of each fiscal quarter.

Unit Split
When were MarkWest's unit splits?
MarkWest completed one stock split on February 28, 2007

Tax Information
How can I obtain a copy of my Tax Reporting Package (including my Schedule K-1)?
Your Tax Reporting Package will be mailed to you in early March every year. You may also access your tax package from the Investor Relations section of our website under K-1 Tax Info. If you need further assistance or have any questions regarding your tax package, please contact the MarkWest Tax Support Line at (800) 232-0011.
What should I do if I need to correct information on my tax package?
Please contact the MarkWest Tax Support Line at (800) 232-0011.
Can someone from MarkWest retrieve my K-1 Form for me?
No, due to security concerns we are not able to obtain your K-1 tax documents. . If you need assistance or have any questions regarding your tax package, please contact the MarkWest Tax Support Line at (800) 232-0011.

Transfer Agent
Who is MarkWest's transfer agent?
Wells Fargo Shareowner Services
161 North Concord Exchange
South St. Paul, Minnesota 55075
Tel: 800.468.9716
Website: www.shareowneronline.com
How do I change the address on my shareholder account or replace a lost unit certificate?
Please contact our Transfer Agent.
Does MarkWest have a direct unit purchase plan?
No. We do not have a direct unit purchase plan. We encourage you to contact a brokerage firm of your choice.

General MLP Questions
How can I find out more about MLPs?
For more information about MLPs, please visit the National Association of Publicly Traded Partnerships (NAPTP) website at www.naptp.org.