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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1419852	Mattress Firm Holding Corp.	MFRM	Retail-Furniture Stores (5712)	000000000

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1534918	J.w. Childs Associates, Inc.	C/O J.w. Childs Associates, L.p. 1000 Winter Street, Suite 4300 Waltham MA 02451	Yes	No	Yes	Yes
1534920	J.w. Childs Associates, L.p.	1000 Winter Street, Suite 4300 Waltham MA 02451	No	No	Yes	No
1534982	J.w. Childs Advisors Iii, L.p.	C/O J.w. Childs Associates, L.p. 1000 Winter Street, Suite 4300 Waltham MA 02451	No	No	Yes	No
1605022	Winter Street Opportunities Fund, L.p.	C/O J.w. Childs Associates, L.p. 1000 Winter Street, Suite 4300 Waltham MA 02451	No	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 Stock	Disposition	2015-01-14	288,334	$60.53	13,896,511	No	4	S	Indirect	See footnote

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

Footnotes

Represents shares directly held by JWC Mattress Holdings, LLC ("JWC Holdings"). Winter Street Opportunities Fund, L.P. ("WSOF") holds approximately 97.3% of the membership interests in JWC Holdings. J.W. Childs Advisors III, L.P. ("GPLP") is the general partner of WSOF. J.W. Childs Associates, L.P. ("Associates LP") is the general partner of GPLP. J.W. Childs Associates, Inc. is the general partner of Associates LP. JWC Fund III Co-Invest LLC ("Co-Invest III") holds approximately 2.7% of the membership interests in JWC Holdings. WSOF holds approximately 26% of the membership interests of Co-Invest III. Each Reporting Person disclaims pecuniary interest in the reported securities except to the extent of its economic interest.