Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock, par value $0.001 per share ("Common Stock")^F1,F2	Dec 6, 2017	P	5,329	$31.90	A	2,285,482	I	See footnotes
Common Stock^F1,F2	Dec 6, 2017	P	56,000	$31.9891	A	2,341,482	I	See footnotes
Common Stock^F1,F2	Dec 7, 2017	P	2,750	$31.4673	A	2,344,232	I	See footnotes
Common Stock^F1,F2	Dec 7, 2017	P	34,820	$31.82	A	2,379,052	I	See footnotes
Common Stock^F1,F2	Dec 8, 2017	P	510	$31.8137	A	2,379,562	I	See footnotes

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1The securities to which this relates are held directly by Owl Creek I, L.P., a Delaware limited partnership ("Owl Creek I"), Owl Creek II, L.P., a Delaware limited partnership ("Owl Creek II"), Owl Creek Overseas Master Fund, Ltd., a Cayman Islands exempted company ("Owl Creek Overseas"), Owl Creek SRI Master Fund, Ltd., a Cayman Islands exempted company ("Owl Creek SRI") and Owl Creek Credit Opportunities Master Fund, L.P., a Cayman Islands exempted limited partnership ("Owl Creek Credit Fund").
F2Owl Creek Advisors, LLC ("Owl Creek Advisors") serves as the general partner of, and has the power to direct the affairs of, Owl Creek I, Owl Creek II and Owl Creek Credit Fund, and serves as manager of, and has the power to direct the affairs of, Owl Creek Overseas and Owl Creek SRI. Owl Creek Asset Management, L.P. (the "Investment Manager") serves as the investment manager to, and has the power to direct the investment activities of, Owl Creek I, Owl Creek II, Owl Creek Overseas, Owl Creek SRI and Owl Creek Credit Fund. Jeffrey A. Altman is the managing member of Owl Creek Advisors and the managing member of the general partner of the Investment Manager. Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.