CUSIP NO. 570759100
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13G | PAGE 2 OF 8 PAGES |
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NAME OF REPORTING PERSON
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S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
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(A) KAYNE ANDERSON CAPITAL ADVISORS, L.P. - 95-4486379
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(B) RICHARD A. KAYNE
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2 |
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
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(a) o
(b) o
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3
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SEC USE ONLY | |
4
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CITIZENSHIP OR PLACE OF ORGANIZATION
IS A CALIFORNIA LIMITED PARTNERSHIP
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5 | SOLE VOTING POWER | |
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(A) 0
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(B) 0
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NUMBER OF | ||
SHARES
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6
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SHARED VOTING POWER
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BENEFICIALLY | (A) 13,174,651 | |
OWNED BY
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(B) 13,174,651 |
EACH REPORTING | ||
PERSON WITH
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7
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SOLE DISPOSITIVE POWER
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(A) 0
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(B) 0 | ||
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8
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SHARED DISPOSITIVE POWER |
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(A) 13,174,651
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(B) 13,174,651
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9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON* |
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(A) 13,174,651 |
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(B) 13,174,651 |
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10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN |
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SHARES* |
o
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11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 |
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(A) 10.11% |
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(B) 10.11% |
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12 | TYPE OF REPORTING PERSON* |
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(A) IA |
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(B) IN
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Item 1.
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(a)
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Issuer:
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MarkWest Energy Partners, L.P.
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(b)
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Address:
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1515 Arapahoe Street, Tower 1, Suite 1600
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Denver, CO 80202-2137
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Item 2.
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(a)
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Filing Persons:
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Kayne Anderson
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Richard A. Kayne
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Capital Advisors, L.P.
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(b)
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Addresses:
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1800 Avenue of the Stars,
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1800 Avenue of the Stars,
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Third Floor
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Third Floor
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Los Angeles, CA 90067
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Los Angeles, CA 90067
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(c)
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Citizenship:
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Kayne Anderson Capital Advisors, L.P. is a
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California limited partnership
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Richard A. Kayne is a U.S. Citizen
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(d)
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Title of Class
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of Securities:
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Common Units
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(e)
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Cusip Number:
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570759100
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Item 3.
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If this statement is filed pursuant to Rule 13d-1(b) or 13d-2(b), check whether the person filing is a:
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(e)
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Kayne Anderson Capital Advisors, L.P., is an investment adviser registered under section 203 of the Investment Advisers Act of 1940.
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Item 4. | Ownership | ||
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(a)
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Amount Beneficially Owned:
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Kayne Anderson Capital Advisors, L.P. Managed Accounts
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13,174,651
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Richard A. Kayne
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13,174,651
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(b)
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Percent of Class:
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(A) 10.11%
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(B) 10.11%
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(c)
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Number of shares as to which such person has:
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(i) | sole power to vote or direct to vote |
(A) 0
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(B) 0
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(ii) | shared power to vote or direct the vote |
(A) 13,174,651
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(B) 13,174,651
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(iii) | sole power to dispose or direct the disposition | (A) 0 | ||
(B) 0 | ||||
(iv) | shared power to dispose or direct the disposition of | (A) 13,174,651 | ||
(B) 13,174,651 |
Item 5. | Ownership of Five Percent or Less of a Class |
Item 6.
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Ownership of More than Five Percent on Behalf of Another Person.
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Item 7. | Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company |
Item 8. | Identification and Classification of Members of the Group |
Item 9. | Notice of Dissolution of Group |
Item 10. | Certification |
July 5, 2013
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Date
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/S/ RICHARD A. KAYNE
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Richard A. Kayne
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KAYNE ANDERSON CAPITAL ADVISORS, L.P.
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By:
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Kayne Anderson Investment Management, Inc. | ||
By: | /S/ DAVID J. SHLADOVSKY | ||
David J. Shladovsky, Secretary |
July 5, 2013
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Date
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/S/ RICHARD A. KAYNE
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Richard A. Kayne
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KAYNE ANDERSON CAPITAL ADVISORS, L.P.
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By:
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Kayne Anderson Investment Management, Inc. | ||
By: | /S/ DAVID J. SHLADOVSKY | ||
David J. Shladovsky, Secretary |
Box 9. | The reported units are owned by investment accounts (investment limited partnerships, a registered investment company and institutional accounts) managed, with discretion to purchase or sell securities, by Kayne Anderson Capital Advisors, L.P., as a registered investment adviser. |
Dated: July 5, 2013
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/S/ RICHARD A. KAYNE
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Richard A. Kayne
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KAYNE ANDERSON CAPITAL ADVISORS, L.P.
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By:
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Kayne Anderson Investment Management, Inc. | ||
By: | /S/ DAVID J. SHLADOVSKY | ||
David J. Shladovsky, Secretary |