INNOSPEC INC

Ticker: IOSP CUSIP: 45768S105 Class: Common Stock

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q4 2017

Shares 3,654 Value ($000) $258 Avg Close $59.54 Range $53.90 - $66.58

Q3 2015

Shares 193 Value ($000) $9 Avg Close $39.87 Range $35.73 - $44.30

Q2 2015

Shares 263 Value ($000) $12 Avg Close $38.87 Range $36.94 - $40.69

Q1 2015

Shares 1,376 Value ($000) $64 Avg Close $37.07 Range $33.21 - $40.57

Q4 2014

Shares 360 Value ($000) $15 Avg Close $35.30 Range $30.04 - $40.52

Q3 2014

Shares 479 Value ($000) $17 Avg Close $34.84 Range $30.82 - $37.97

Q2 2014

Shares 505 Value ($000) $22 Avg Close $36.87 Range $34.10 - $39.69

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	3,654	$258	$59.54	$53.90 - $66.58
Q3 2015	193	$9	$39.87	$35.73 - $44.30
Q2 2015	263	$12	$38.87	$36.94 - $40.69
Q1 2015	1,376	$64	$37.07	$33.21 - $40.57
Q4 2014	360	$15	$35.30	$30.04 - $40.52
Q3 2014	479	$17	$34.84	$30.82 - $37.97
Q2 2014	505	$22	$36.87	$34.10 - $39.69