INNOSPEC INC

Ticker: IOSP CUSIP: 45768S105 Class: Common Stock

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

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

Q2 2019

Shares 206,490 Value ($000) $18,840 Avg Close $76.63 Range $71.16 - $83.47

Q1 2019

Shares 213,320 Value ($000) $17,780 Avg Close $67.58 Range $51.63 - $78.46

Q4 2018

Shares 221,924 Value ($000) $13,706 Avg Close $62.18 Range $48.12 - $70.66

Q3 2018

Shares 225,694 Value ($000) $17,322 Avg Close $70.20 Range $64.67 - $74.99

Q2 2018

Shares 230,551 Value ($000) $17,649 Avg Close $67.39 Range $59.37 - $73.05

Q1 2018

Shares 234,069 Value ($000) $16,057 Avg Close $62.31 Range $55.67 - $66.49

Q4 2017

Shares 240,896 Value ($000) $17,007 Avg Close $59.54 Range $53.90 - $66.58

Q3 2017

Shares 244,956 Value ($000) $15,102 Avg Close $53.37 Range $48.20 - $59.20

Q2 2017

Shares 257,253 Value ($000) $16,863 Avg Close $57.04 Range $53.20 - $62.50

Q1 2017

Shares 246,936 Value ($000) $15,989 Avg Close $59.26 Range $51.41 - $66.19

Q4 2016

Shares 175,548 Value ($000) $12,025 Avg Close $56.82 Range $47.94 - $64.99

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2019	206,490	$18,840	$76.63	$71.16 - $83.47
Q1 2019	213,320	$17,780	$67.58	$51.63 - $78.46
Q4 2018	221,924	$13,706	$62.18	$48.12 - $70.66
Q3 2018	225,694	$17,322	$70.20	$64.67 - $74.99
Q2 2018	230,551	$17,649	$67.39	$59.37 - $73.05
Q1 2018	234,069	$16,057	$62.31	$55.67 - $66.49
Q4 2017	240,896	$17,007	$59.54	$53.90 - $66.58
Q3 2017	244,956	$15,102	$53.37	$48.20 - $59.20
Q2 2017	257,253	$16,863	$57.04	$53.20 - $62.50
Q1 2017	246,936	$15,989	$59.26	$51.41 - $66.19
Q4 2016	175,548	$12,025	$56.82	$47.94 - $64.99