STEEL DYNAMICS INC

Ticker: STLD CUSIP: 858119100 Class: COMMON STOCK

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

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

Q3 2017

Shares 32,640 Value ($000) $1,125 Avg Close $29.48 Range $27.05 - $32.51

Q2 2017

Shares 36,803 Value ($000) $1,318 Avg Close $28.97 Range $26.88 - $31.37

Q1 2017

Shares 40,256 Value ($000) $1,399 Avg Close $29.67 Range $27.09 - $32.02

Q3 2016

Shares 42,045 Value ($000) $1,051 Avg Close $21.06 Range $18.79 - $23.10

Q2 2016

Shares 67,746 Value ($000) $1,660 Avg Close $20.03 Range $17.68 - $22.12

Q1 2016

Shares 68,597 Value ($000) $1,544 Avg Close $15.36 Range $12.48 - $18.79

Q4 2015

Shares 22,750 Value ($000) $407 Avg Close $14.45 Range $13.12 - $15.93

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2017	32,640	$1,125	$29.48	$27.05 - $32.51
Q2 2017	36,803	$1,318	$28.97	$26.88 - $31.37
Q1 2017	40,256	$1,399	$29.67	$27.09 - $32.02
Q3 2016	42,045	$1,051	$21.06	$18.79 - $23.10
Q2 2016	67,746	$1,660	$20.03	$17.68 - $22.12
Q1 2016	68,597	$1,544	$15.36	$12.48 - $18.79
Q4 2015	22,750	$407	$14.45	$13.12 - $15.93