Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2,F3	Jan 21, 2016	P	2,400	$18.24	A	1,583,162	I	See footnotes
Common Stock^F1,F2,F3	Jan 22, 2016	P	18,900	$18.489	A	1,602,062	I	See footnotes
Common Stock^F1,F2,F3	Jan 22, 2016	P	3,600	$18.515	A	1,605,662	I	See footnotes
Common Stock^F1,F2,F3	Jan 22, 2016	P	2,000	$18.4805	A	1,607,662	I	See footnotes

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1This Form 4 is filed on behalf of Luther King Capital Management Corporation (LKCM), LKCM Private Discipline Master Fund, SPC, on behalf of its wholly-owned subsidiary PDLP Lawson, LLC (PDP), on, LKCM Investment Partnership, L.P. (LIP), 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. LKCM Micro-Cap Management, L.P. 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 for PDP, LIP, Micro and Core. J. Luther King, Jr. is a controlling shareholder of LKCM and LIP GP, and J. Luther King, Jr. and J. Bryan King are controlling members of Micro GP and Core GP.
F2Includes (i) 1,375,794 shares held by PDP, (ii) 200,938 shares held by LIP, (iii) 19,802 shares held by Micro, (iv) 8,628 shares held by Core, and (v) 2,500 shares held by a separately managed portfolio for which LKCM serves as investment adviser.
F3Each of the Reporting Persons 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 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 such securities for purposes of the Securities Exchange Act of 1934, as amended, or for any other purposes.