Catherine Hessner

Insider Trading: Sales

Symbol	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
IOSP	$68.24	1,382	$94,307.68	24,910	2018-02-26	Filing
IOSP	$71.56	707	$50,589.74	25,084	2017-11-28	Filing
IOSP	$63.15	3,000	$189,438.60	24,910	2017-03-17	Filing
IOSP	$70.91	1,196	$84,803.93	28,237	2017-02-17	Filing
IOSP	$70.91	2,468	$174,996.75	28,237	2017-02-17	Filing
IOSP	$63.15	554	$34,986.54	28,237	2016-11-18	Filing
IOSP	$63.15	445	$28,102.91	28,237	2016-11-18	Filing
IOSP	$43.80	1,455	$63,723.91	28,237	2016-03-02	Filing
IOSP	$44.03	5,000	$220,144.00	28,237	2015-05-11	Filing
IOSP	$43.90	3,670	$161,111.90	33,237	2015-02-24	Filing
IOSP	$43.90	419	$18,393.97	33,237	2015-02-24	Filing
IOSP	$43.90	957	$42,012.01	33,237	2015-02-24	Filing
IOSP	$43.67	678	$29,607.04	33,237	2014-02-25	Filing
IOSP	$40.69	3,764	$153,172.59	33,237	2013-05-09	Filing
IOSP	$40.69	914	$37,194.41	33,237	2013-05-09	Filing
IOSP	$40.69	597	$24,294.38	33,237	2013-05-09	Filing
IOSP	$40.69	2	$81.39	33,237	2013-05-09	Filing
IOSP	$38.86	1,845	$71,696.70	33,237	2013-02-26	Filing
IOSP	$41.29	149	$6,152.21	33,237	2013-02-19	Filing
IOSP	$30.18	3,468	$104,661.12	33,237	2012-08-13	Filing