Ownership Summary

Top Holders	Shares Held	% O/S	Share Change	Filing Date
The Vanguard Group, Inc.	11,883,660	10.50	158,269	6/30/19
BlackRock Institutional Trust Company, N.A.	5,494,547	4.85	-6,685	6/30/19
State Street Global Advisors (US)	5,028,496	4.44	162,332	6/30/19
Jackson Square Partners, LLC	3,970,725	3.51	-276,094	6/30/19
JP Morgan Asset Management	3,016,567	2.67	131,007	6/30/19
Invesco Advisers, Inc.	2,896,540	2.56	510,222	6/30/19
MFS Investment Management	2,529,438	2.23	1,858,178	6/30/19
Fidelity Management & Research Company	2,490,746	2.20	-1,137,280	6/30/19
Ivy Investment Management Company	2,048,180	1.81	6,912	6/30/19
American Century Investment Management, Inc.	1,988,616	1.76	169,110	6/30/19

Fund	Shares Held	% O/S	Share Change	Filing Date
Vanguard Total Stock Market Index Fund	3,149,465	2.78	42,118	8/31/19
Vanguard Mid-Cap Index Fund	2,794,591	2.47	-18,159	8/31/19
Vanguard 500 Index Fund	2,239,891	1.98	4,164	8/31/19
Vanguard U.S. Growth Fund	1,235,780	1.09	-53,445	6/30/19
MFS Growth Fund	1,228,293	1.09	--	7/31/19
SPDR S&P 500 ETF	1,202,245	1.06	-45,962	8/31/19
Allianz Income And Growth	1,200,400	1.06	--	5/31/19
JPMorgan Growth Advantage Fund	1,042,647	0.92	-13,100	7/31/19
US Bank Vanguard Institutional 500 Index Trust	1,031,814	0.91	-14,260	8/31/19
Statens Pensjonsfond Utland	1,014,358	0.90	91,649	12/31/18

* Insider values reflect direct beneficial ownership.