OWNERSHIP SUMMARY

Top Holders

Holder Shares Held % O/S Share Change Filing Date
BlackRock Institutional Trust Company, N.A. 2,785,709 13.25 285,218 6/30/18
The Vanguard Group, Inc. 2,114,147 10.06 313,805 6/30/18
Dimensional Fund Advisors, L.P. 1,209,567 5.75 -1,848 6/30/18
RE Advisers Corporation 831,230 3.95 -- 6/30/18
Arthur Zaske & Associates, LLC 744,110 3.54 -339,322 12/31/17
Neuberger Berman, LLC 528,213 2.51 -148,848 6/30/18
State Street Global Advisors (US) 527,831 2.51 16,113 6/30/18
Marshall Wace LLP 507,356 2.41 300,246 6/30/18
Baron Capital Management, Inc. 500,000 2.38 -- 6/30/18
Rothschild Asset Management, Inc. 481,684 2.29 481,684 6/30/18

Top Holders: Mutual Funds

Fund Shares Held % O/S Share Change Filing Date
iShares Core S&P Small-Cap ETF 995,258 4.74 33,555 8/31/18
Homestead Small Company Stock Fund 657,427 3.13 -- 6/30/18
Vanguard Small-Cap Index Fund 525,730 2.50 10,207 8/31/18
Vanguard Total Stock Market Index Fund 515,824 2.45 -- 8/31/18
Baron Small Cap Fund 500,000 2.38 -- 6/30/18
iShares Russell 2000 ETF 428,252 2.04 -6,764 8/31/18
Statens Pensjonsfond Utland 400,919 1.91 222,043 12/31/17
Vanguard Small-Cap Growth Index Fund 299,658 1.43 5,816 8/31/18
Oppenheimer Discovery Fund 296,140 1.41 75,670 7/31/18
DFA U.S. Small Cap Portfolio 269,487 1.28 -- 4/30/18

* Insider values reflect direct beneficial ownership.

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