Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock, $0.01 par value^F1,F2,F3,F4	Dec 19, 2018	P	93,614	$61.2887	A	8,311,100	I	By 40 North Latitude Master Fund Ltd.
Common Stock, $0.01 par value^F2,F3,F4	Dec 19, 2018	P	20,000	$61.106	A	8,331,100	I	By 40 North Latitude Master Fund Ltd.
Common Stock, $0.01 par value^F5,F2,F3,F4	Dec 20, 2018	P	307,500	$61.0959	A	8,638,600	I	By 40 North Latitude Master Fund Ltd.
Common Stock, $0.01 par value^F2,F3,F4	Dec 20, 2018	P	100	$61.80	A	8,638,700	I	By 40 North Latitude Master Fund Ltd.
Common Stock, $0.01 par value^F2,F3,F4	Dec 20, 2018	P	50,000	$61.00	A	8,688,700	I	By 40 North Latitude Master Fund Ltd.
Common Stock, $0.01 par value^F6,F2,F3,F4	Dec 20, 2018	P	35,000	$61.1732	A	8,723,700	I	By 40 North Latitude Master Fund Ltd.
Common Stock, $0.01 par value^F7,F2,F3,F4	Dec 21, 2018	P	381,390	$60.9621	A	9,105,090	I	By 40 North Latitude Master Fund Ltd.
Common Stock, $0.01 par value^F8,F2,F3,F4	Dec 21, 2018	P	5,700	$61.5752	A	9,110,790	I	By 40 North Latitude Master Fund Ltd.

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $60.7100 to $61.5000. The Reporting Persons (as defined in footnote 2 below) undertake to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnotes 1, 5, 6, 7, and 8 to this Form 4.
F2In addition to 40 North Latitude Fund LP, a Delaware limited partnership ("40 North Latitude Feeder"), this Form 4 is being filed jointly by 40 North Latitude Master Fund Ltd., a Cayman Islands exempted company incorporated with limited liability ("40 North Latitude Master"), 40 North GP III LLC, a Delaware limited liability company ("40 North GP III"), David S. Winter, an American citizen, and David J. Millstone, an American citizen (all of the foregoing, collectively, the "Reporting Persons"), each of whom has the same business address as 40 North Latitude Feeder.
F3The securities reported on this Form 4 (the "Subject Securities") are held directly by 40 North Latitude Master, for which 40 North Latitude Feeder serves as a feeder fund. 40 North GP III is the general partner of 40 North Latitude Feeder, and Messrs. Winter and Millstone are the principals of 40 North GP III.
F440 North Latitude Master and 40 North Latitude Feeder, as pooled investment vehicles with direct and indirect holdings, respectively, in the Subject Securities; 40 North GP III, as the general partner of 40 North Latitude Feeder; and Messrs. Winter and Millstone, as the principals of 40 North GP III; in each case, may be deemed to beneficially own the Subject Securities for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Each of the Reporting Persons disclaims beneficial ownership of the Subject Securities except to the extent of any pecuniary interest therein.
F5The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $60.5800 to $61.5500.
F6The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $60.9500 to $61.5000.
F7The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $60.5150 to $61.3800.
F8The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $61.5450 to $61.6000.