DUCOMMUN INC DEL

Ticker: DCO CUSIP: 264147109 Class: COM

EMERALD ADVISERS, LLC's Holding History (CIK: 0001015083)

Note: Option positions (PUT/CALL) are excluded.

Q4 2016

Shares 9,657 Value ($000) $247 Avg Close $24.37 Range $18.70 - $29.99

Q3 2016

Shares 28,930 Value ($000) $661 Avg Close $21.41 Range $18.78 - $24.86

Q2 2016

Shares 33,159 Value ($000) $656 Avg Close $17.04 Range $14.13 - $21.18

Q1 2016

Shares 28,513 Value ($000) $435 Avg Close $14.48 Range $12.28 - $17.12

Q4 2015

Shares 28,961 Value ($000) $470 Avg Close $18.32 Range $14.77 - $23.33

Q3 2015

Shares 21,131 Value ($000) $424 Avg Close $23.32 Range $18.95 - $27.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	9,657	$247	$24.37	$18.70 - $29.99
Q3 2016	28,930	$661	$21.41	$18.78 - $24.86
Q2 2016	33,159	$656	$17.04	$14.13 - $21.18
Q1 2016	28,513	$435	$14.48	$12.28 - $17.12
Q4 2015	28,961	$470	$18.32	$14.77 - $23.33
Q3 2015	21,131	$424	$23.32	$18.95 - $27.00