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Ownership Summary

Top Holders

Holder Shares Held % O/S Share Change Filing Date
BlackRock Institutional Trust Company, N.A. 3,783,030 12.30 164,069 12/31/17
Dimensional Fund Advisors, L.P. 2,581,846 8.39 143,384 12/31/17
The Vanguard Group, Inc. 1,441,640 4.69 -148,739 12/31/17
Wellington Management Company, LLP 1,231,949 4.00 -339,689 12/31/17
Royce & Associates, LP 1,109,995 3.61 175,052 12/31/17
Northern Trust Investments, Inc. 927,859 3.02 -8,204 12/31/17
State Street Global Advisors (US) 876,218 2.85 70,428 12/31/17
RBC Global Asset Management (U.S.) Inc. 781,919 2.54 -7,215 12/31/17
Northern Trust Global Investments 734,505 2.39 15,612 12/31/17
Denver Investments 697,394 2.27 -24,234 12/31/17

Top Holders: Mutual Funds

Fund Shares Held % O/S Share Change Filing Date
iShares Core S&P Small-Cap ETF 1,462,534 4.75 13,706 1/31/18
Vanguard Total Stock Market Index Fund 704,722 2.29 22,050 12/31/17
iShares Russell 2000 ETF 608,558 1.98 -12,736 12/31/17
DFA U.S. Small Cap Value Portfolio 580,787 1.89 -75,492 10/31/17
Northern Small Cap Value Fund 563,600 1.83 -5,599 12/31/17
iShares S&P Small-Cap 600 Value ETF 429,379 1.40 38,189 12/31/17
Royce Opportunity Fund 422,900 1.37 422,900 9/30/17
Vanguard Extended Market Index Fund 393,743 1.28 1,859 12/31/17
American Beacon Small Cap Value Fund 368,226 1.20 -- 11/30/17
Legg Mason Royce US Small Cap Opportunity Fund 355,115 1.15 216,515 11/30/17

* Insider values reflect direct beneficial ownership.

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