Ownership Summary

Top Holders

Holder Shares Held % O/S Share Change Filing Date
Dimensional Fund Advisors, L.P. 963,583 8.33 6,068 12/31/19
BlackRock Institutional Trust Company, N.A. 747,788 6.47 11,559 12/31/19
RBC Global Asset Management (U.S.) Inc. 709,123 6.13 -59,942 12/31/19
Paradigm Capital Management, Inc. 595,015 5.15 14,400 12/31/19
Ducommun (Robert C) 567,494 4.87 -6,085 3/25/20
The Vanguard Group, Inc. 551,323 4.77 2,645 12/31/19
Renaissance Technologies LLC 540,800 4.68 -30,400 12/31/19
State Street Global Advisors (US) 451,987 3.91 235,826 12/31/19
Goldman Sachs Asset Management (US) 406,263 3.51 78,908 12/31/19
Gabelli Funds, LLC 389,140 3.35 31,000 2/20/20

Top Holders: Mutual Funds

Fund Shares Held % O/S Share Change Filing Date
DFA U.S. Small Cap Value Portfolio 323,875 2.78 -- 10/31/19
Vanguard Total Stock Market Index Fund 313,428 2.69 -- 2/29/20
SPDR S&P Aerospace & Defense ETF 256,482 2.20 2,282 2/29/20
Goldman Sachs Small Cap Value Fund 251,654 2.16 251,654 12/31/19
iShares Russell 2000 ETF 228,260 1.96 3,738 2/29/20
TETON Westwood Mighty Mites Fund 188,040 1.62 -- 12/31/19
William Blair Small Cap Growth Fund 164,310 1.41 49,524 1/31/20
PH&N U.S. Multi-Style All-Cap Equity Fund 159,435 1.37 8,711 12/31/19
Vanguard Extended Market Index Fund 155,905 1.34 -3,301 2/29/20
DWS Small Cap Growth Fund 144,631 1.24 -- 2/29/20

* Insider values reflect direct beneficial ownership.

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