Ownership Summary

Top Holders

Holder Shares Held % O/S Share Change Filing Date
BlackRock Institutional Trust Company, N.A. 1,066,560 7.17 24,617 12/31/18
Frontier Capital Management Company, LLC 876,267 5.89 -84 12/31/18
Renaissance Technologies LLC 851,000 5.72 38,000 12/31/18
The Vanguard Group, Inc. 794,275 5.34 30,837 12/31/18
Dimensional Fund Advisors, L.P. 575,348 3.87 3,753 12/31/18
Impax Asset Management LLC 523,054 3.52 15,100 12/31/18
Adage Capital Management, L.P. 410,000 2.76 -- 12/31/18
State Street Global Advisors (US) 334,363 2.25 -10,519 12/31/18
Monarch Partners Asset Management LLC 276,496 1.86 130,500 12/31/18
Aristotle Capital Boston, LLC 258,110 1.73 33,577 12/31/18

Top Holders: Mutual Funds

Fund Shares Held % O/S Share Change Filing Date
Pax Small Cap Fund 523,054 3.52 15,100 12/31/18
Vanguard Total Stock Market Index Fund 394,915 2.65 4,779 2/28/19
iShares Russell 2000 ETF 302,744 2.03 -20,412 2/28/19
Vanguard Extended Market Index Fund 223,191 1.50 5,491 2/28/19
DFA U.S. Small Cap Portfolio 200,365 1.35 1,034 10/31/18
iShares Russell 2000 Value ETF 137,847 0.93 -7,830 2/28/19
DFA U.S. Micro Cap Portfolio 120,196 0.81 538 10/31/18
Vanguard Explorer Value Fund 110,216 0.74 -- 12/31/18
Tributary Small Company Fund 108,800 0.73 20,400 12/31/18
Vanguard Utilities Index Fund 74,637 0.50 6,001 2/28/19

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