INNOSPEC INC

Ticker: IOSP CUSIP: 45768S105 Class: Common Stock

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q3 2021

Shares 101 Value ($000) $9 Avg Close $83.46 Range $75.85 - $90.38

Q2 2021

Shares 628 Value ($000) $57 Avg Close $92.53 Range $83.80 - $100.29

Q2 2014

Shares 300 Value ($000) $13 Avg Close $36.87 Range $34.10 - $39.69

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	101	$9	$83.46	$75.85 - $90.38
Q2 2021	628	$57	$92.53	$83.80 - $100.29
Q2 2014	300	$13	$36.87	$34.10 - $39.69