Ownership Summary

Top Holders

Holder Shares Held % O/S Share Change Filing Date
BlackRock Institutional Trust Company, N.A. 1,046,481 7.02 -20,079 3/31/19
Frontier Capital Management Company, LLC 884,069 5.93 7,802 3/31/19
Renaissance Technologies LLC 864,700 5.80 13,700 3/31/19
The Vanguard Group, Inc. 798,381 5.35 4,106 3/31/19
Dimensional Fund Advisors, L.P. 576,057 3.86 709 3/31/19
Impax Asset Management LLC 440,258 2.95 -82,796 3/31/19
Adage Capital Management, L.P. 410,000 2.75 -- 3/31/19
Aristotle Capital Boston, LLC 384,369 2.58 126,259 3/31/19
State Street Global Advisors (US) 345,536 2.32 11,173 3/31/19
Monarch Partners Asset Management LLC 237,731 1.59 -38,765 3/31/19

Top Holders: Mutual Funds

Fund Shares Held % O/S Share Change Filing Date
Pax Small Cap Fund 523,054 3.51 15,100 12/31/18
Vanguard Total Stock Market Index Fund 395,072 2.65 -- 4/30/19
iShares Russell 2000 ETF 295,184 1.98 -10,908 4/30/19
Vanguard Extended Market Index Fund 215,977 1.45 6,427 4/30/19
DFA U.S. Small Cap Portfolio 200,365 1.34 -- 1/31/19
iShares Russell 2000 Value ETF 132,627 0.89 -4,680 4/30/19
Tributary Small Company Fund 129,000 0.86 20,200 3/31/19
DFA U.S. Micro Cap Portfolio 120,511 0.81 315 1/31/19
Vanguard Explorer Value Fund 111,780 0.75 1,564 3/31/19
Vanguard Utilities Index Fund 77,377 0.52 -360 4/30/19

Copyright Thomson Reuters Corporation