Ownership Summary

Top Holders

Holder Shares Held % O/S Share Change Filing Date
BlackRock Institutional Trust Company, N.A. 1,027,971 6.91 52,021 6/30/18
Frontier Capital Management Company, LLC 835,345 5.62 -20,909 6/30/18
Renaissance Technologies LLC 783,800 5.27 67,375 6/30/18
The Vanguard Group, Inc. 721,460 4.85 -27,820 6/30/18
Dimensional Fund Advisors, L.P. 567,709 3.82 5,609 6/30/18
Impax Asset Management LLC 500,954 3.37 1,405 6/30/18
Adage Capital Management, L.P. 410,000 2.76 -- 6/30/18
State Street Global Advisors (US) 332,815 2.24 -2,105 6/30/18
Aristotle Capital Boston, LLC 213,464 1.44 13,514 6/30/18
Eagle Boston Investment Management, Inc. 191,442 1.29 27,138 6/30/18

Top Holders: Mutual Funds

Fund Shares Held % O/S Share Change Filing Date
Pax World Small Cap Fund 500,954 3.37 1,405 6/30/18
Vanguard Total Stock Market Index Fund 369,910 2.49 -- 8/31/18
iShares Russell 2000 ETF 305,120 2.05 -4,806 8/31/18
DFA U.S. Small Cap Portfolio 195,973 1.32 5,054 4/30/18
Vanguard Extended Market Index Fund 193,118 1.30 14,234 8/31/18
British Columbia Investment Management Corp 140,277 0.94 26,858 3/31/17
iShares Russell 2000 Value ETF 133,694 0.90 -5,629 8/31/18
DFA U.S. Micro Cap Portfolio 119,658 0.80 -- 4/30/18
Vanguard Explorer Value Fund 110,216 0.74 -- 6/30/18
Tributary Small Company Fund 74,633 0.50 74,633 6/30/18

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