INNOSPEC INC

Ticker: IOSP CUSIP: 45768S105 Class: Common Stock

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q1 2016

Shares 40,064 Value ($000) $1,737 Avg Close $40.40 Range $36.39 - $46.84

Q4 2015

Shares 33,787 Value ($000) $1,835 Avg Close $48.12 Range $40.31 - $52.05

Q3 2015

Shares 29,428 Value ($000) $1,369 Avg Close $39.87 Range $35.73 - $44.30

Q2 2015

Shares 12,895 Value ($000) $581 Avg Close $38.87 Range $36.94 - $40.69

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2016	40,064	$1,737	$40.40	$36.39 - $46.84
Q4 2015	33,787	$1,835	$48.12	$40.31 - $52.05
Q3 2015	29,428	$1,369	$39.87	$35.73 - $44.30
Q2 2015	12,895	$581	$38.87	$36.94 - $40.69