Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2,F3	Feb 22, 2016	P	3,900	$5.6891	A	2,176,254	I	See footnotes
Common Stock^F1,F2,F3	Feb 22, 2016	P	4,469	$5.6868	A	2,180,723	I	See footnotes
Common Stock^F1,F2,F3	Feb 22, 2016	P	8,770	$5.704	A	2,189,493	I	See footnotes
Common Stock^F1,F2,F3	Feb 23, 2016	P	5,923	$5.8496	A	2,195,416	I	See footnotes
Common Stock^F1,F2,F3	Feb 23, 2016	P	13,710	$5.8435	A	2,209,126	I	See footnotes
Common Stock^F1,F2,F3	Feb 23, 2016	P	4,818	$5.81	A	2,213,944	I	See footnotes

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1This Form 4 is filed by Luther King Capital Management Corporation (LKCM), LKCM Private Discipline Master Fund, SPC (PDP), LKCM Investment Partnership, L.P. (LIP), LKCM Investment Partnership II, L.P. (LIP2), LKCM Micro-Cap Partnership, L.P. (Micro), LKCM Core Discipline, L.P. (Core), J. Luther King, Jr. and J. Bryan King (Reporting Persons). LKCM Private Discipline Management, L.P. holds the management shares of PDP, and LKCM Alternative Management, LLC (PDP GP) is its general partner. LKCM Investment Partnership GP, LLC (LIP GP) is the general partner of LIP and LIP2. LKCM Micro-Cap Management, L.P. (Micro GP) is the general partner of Micro. LKCM Core Discipline Management, L.P. (Core GP) is the general partner of Core. LKCM is the investment manager of PDP, LIP, LIP2, Micro and Core. J. Luther King, Jr. is the controlling shareholder or member, as applicable, of LKCM and LIP GP. J. Luther King, Jr. and J. Bryan King are controlling members of PDP GP, Micro GP and Core GP.
F2Includes (i) 1,355,778 shares held by PDP, (ii) 750,000 shares held by LIP, (iii) 28,000 shares held by LIP2, (iv) 52,489 shares held by Micro, (v) 14,922 shares held by Core, and (vi) 12,755 shares held by J. Luther King, Jr.
F3Each of the Reporting Persons hereby expressly disclaims membership in a group under the Securities Exchange Act of 1934, as amended, with respect to the securities reported herein, and this Form 4 shall not be deemed to be an admission that any such Reporting Person is a member of such a group. Each of the Reporting Persons hereby expressly disclaims beneficial ownership of the securities reported herein, except to the extent of its pecuniary interest therein, and this Form 4 shall not be deemed to be an admission that any such Reporting Person is the beneficial owner of the securities reported herein for purposes of the Securities Exchange Act of 1934, as amended, or for any other purpose.