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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	Insider Title	Director	Officer	Large Shareholder	Other
1027035	W John Childs	C/O J.w. Childs Associates, L.p. 1000 Winter Street, Suite 4300 Waltham MA 02451		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 Stock	Disposition	2014-12-16	1,914,581	$60.53	14,184,845	No	4	S	Indirect	See footnote
Common Stock	Disposition	2014-12-16	50,121	$60.53	371,331	No	4	S	Indirect	See footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	See footnote
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. ("Associates Inc.") is the general partner of Associates LP. The Reporting Person is the sole shareholder of Associates Inc. 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. The Reporting Person disclaims pecuniary interest in the reported securities except to the extent of his economic interest.
Represents shares directly held by the John W. Childs 2013 Charitable Remainder Trust. The Reporting Person is the sole trustee of the John W. Childs 2013 Charitable Remainder Trust. The Reporting Person disclaims pecuniary interest in the reported securities except to the extent of his economic interest.