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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1483096	Chesapeake Midstream Partners Lp	CHKM	Natural Gas Transmission (4922)	800534394

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1497538	Gip-A Holding (Chk), L.p.	12 E. 49Th Street New York NY 10017	Yes	No	Yes	No
1497540	Gip-B Holding (Chk), L.p.	12 E. 49Th Street New York NY 10017	Yes	No	Yes	No
1497541	Gip-C Holding (Chk), L.p.	12 E. 49Th Street New York NY 10017	Yes	No	Yes	No
1497542	Global Infrastructure Management, Llc	12 E. 49Th Street New York NY 10017	Yes	No	Yes	No
1497544	Global Infrastructure Investors, Ltd	12 E. 49Th Street New York NY 10017	Yes	No	Yes	No
1497555	Global Infrastructure Gp, L.p.	12 E. 49Th Street New York NY 10017	Yes	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Units	Disposition	2012-02-07	10,497,003	$27.68	0	No	4	S	Indirect	See footnotes

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	See footnotes

Footnotes

This form is filed jointly by Global Infrastructure Investors, Limited ("GIP Investors"), Global Infrastructure Management, LLC ("GIP Management"), Global Infrastructure GP, L.P. ("GI GP"), GIP-A Holding (CHK), L.P. ("GIP-A"), GIP-B Holding (CHK), L.P. ("GIP-B") and GIP-C Holding (CHK), L.P. ("GIP-C" and together with GIP-A and GIP-B, the "GIP Partnerships").
GIP Investors is the sole general partner of GI GP, which is the sole general partner of the limited partnerships that directly or indirectly own the general partners of each of the GIP Partnerships. Pursuant to, and subject to the terms and conditions of, a management agreement between GI GP and GIP Management, GIP Management has sole voting and investment power over the securities held by the GIP Partnerships. Each of GIP Investors, GIP Management and GI GP may be deemed to indirectly beneficially own these securities held by the GIP Partnerships, but disclaim beneficial ownership except to the extent of their pecuniary interest therein.