Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock, $0.001 par value^F1,F2	Sep 14, 2015	P	8,007	$2.8944	A	38,007	I	By Separately Managed Account
Common Stock, $0.001 par value^F1,F2	Sep 14, 2015	P	428	$2.6875	A	38,435	I	By Separately Managed Account
Common Stock, $0.001 par value^F1,F3	Sep 14, 2015	P	152,133	$2.8944	A	2,883,112	I	By PW Partners Atlas Fund III LP
Common Stock, $0.001 par value^F1,F3	Sep 14, 2015	P	8,132	$2.6875	A	2,891,244	I	By PW Partners Atlas Fund III LP
Common Stock, $0.001 par value^F1,F4	holding	—	—		—	25,000	I	By PW Partners Master Fund LP
Common Stock, $0.001 par value^F1	holding	—	—		—	76,319	D

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1This Form 4 is filed jointly by PW Partners Atlas Fund III LP ("Atlas Fund III"), PW Partners Master Fund LP ("Master Fund"), PW Partners Atlas Funds, LLC ("Atlas Fund GP"), PW Partners, LLC ("Master Fund GP"), PW Partners Capital Management LLC ("PW Capital Management") and Patrick Walsh (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.
F2Represents securities held in an account (the "Separately Managed Account") separately managed by PW Capital Management. As the Investment Manager of the Separately Managed Account, PW Capital Management may be deemed to beneficially own the securities held in the Separately Managed Account. Mr. Walsh, as the Managing Member of PW Capital Management, may be deemed to beneficially own the securities held in the Separately Managed Account.
F3Represents securities owned directly by Atlas Fund III. As the General Partner of Atlas Fund III, Atlas Fund GP may be deemed to beneficially own the securities owned directly by Atlas Fund III. As the Investment Manager of Atlas Fund III, PW Capital Management may be deemed to beneficially own the securities owned directly by Atlas Fund III. As the Managing Member of PW Capital Management and the Managing Member and Chief Executive Officer of Atlas Fund GP, Mr. Walsh may be deemed to beneficially own the securities owned directly by Atlas Fund III.
F4Represents securities owned directly by Master Fund. As the General Partner of Master Fund, Master Fund GP may be deemed to beneficially own the securities owned directly by Master Fund. As the Investment Manager of Master Fund, PW Capital Management may be deemed to beneficially own the securities owned directly by Master Fund. As the Managing Member of PW Capital Management and the Managing Member and Chief Executive Officer of Master Fund GP, Mr. Walsh may be deemed to beneficially own the securities owned directly by Master Fund.