William Orr Clark

Insider

First SEC filing: May 18, 2004 · Latest: May 18, 2004

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.

Insider at

IOSP selling May 17, 2004

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 12 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

12 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 17, 2004	IOSP	S	9,460	$21.32	$201,687	0 Direct	-100.00%	Disposed	766.3% (price as of 2026-08-20)
May 14, 2004	IOSP	S	5,000	$22.21	$111,050	9,460 Direct	-34.58%	Disposed	731.6% (price as of 2026-08-20)
May 13, 2004	IOSP	S	4,400	$22.48	$98,912	14,460 Direct	-23.33%	Disposed	721.6% (price as of 2026-08-20)
May 12, 2004	IOSP	S	1,800	$22.38	$40,284	26,360 Direct	-6.39%	Disposed	725.3% (price as of 2026-08-20)
May 12, 2004	IOSP	S	7,500	$22.57	$169,275	18,860 Direct	-28.45%	Disposed	718.3% (price as of 2026-08-20)
May 11, 2004	IOSP	E	461	—	—	6,008 Direct	-7.13%	Disposed	(price as of 2026-08-20)
May 11, 2004	IOSP	E	144	—	—	6,469 Direct	-2.18%	Disposed	(price as of 2026-08-20)
May 11, 2004	IOSP	M	5,284	—	—	6,613 Direct	-44.41%	Disposed	(price as of 2026-08-20)
May 11, 2004	IOSP	M	9,059	—	—	11,897 Direct	-43.23%	Disposed	(price as of 2026-08-20)
May 11, 2004	IOSP	M	7,710	—	—	20,956 Direct	-26.90%	Disposed	(price as of 2026-08-20)
May 11, 2004	IOSP	M	461	—	—	28,666 Direct	-1.58%	Disposed	(price as of 2026-08-20)
May 11, 2004	IOSP	M	2,304	—	—	29,127 Direct	-7.33%	Disposed	(price as of 2026-08-20)
May 11, 2004	IOSP	S	2,601	$23.01	$59,849	26,360 Direct	-8.98%	Disposed	702.7% (price as of 2026-08-20)
May 11, 2004	IOSP	M	5,284	—	—	26,630 Direct	+24.75%	Acquired	(price as of 2026-08-20)
May 11, 2004	IOSP	M	9,059	$13.28	$120,304	21,076 Direct	+75.38%	Acquired	1290.8% (price as of 2026-08-20)
May 11, 2004	IOSP	M	7,710	$7.81	$60,215	12,017 Direct	+179.01%	Acquired	2264.9% (price as of 2026-08-20)
May 11, 2004	IOSP	M	461	—	—	4,307 Direct	+11.99%	Acquired	(price as of 2026-08-20)
May 11, 2004	IOSP	M	2,304	$13.11	$30,205	3,846 Direct	+149.42%	Acquired	1308.8% (price as of 2026-08-20)
Sept. 30, 2003	IOSP	S	15	$17.55	$263	5,943 Direct	-0.25%	Disposed	952.4% (price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
May 11, 2004	IOSP	OPTIONS	COMMON STOCK (461)	$0.00	March 1, 2011	461	Disposed
May 11, 2004	IOSP	OPTIONS	COMMON STOCK (144)	$0.00	Dec. 31, 2008	144	Disposed
May 11, 2004	IOSP	OPTIONS	COMMON STOCK (5,284)	$0.00	Dec. 31, 2008	5,284	Disposed
May 11, 2004	IOSP	OPTIONS	COMMON STOCK (9,059)	$13.28	Aug. 8, 2009	9,059	Disposed
May 11, 2004	IOSP	OPTIONS	COMMON STOCK (7,710)	$7.81	May 10, 2010	7,710	Disposed
May 11, 2004	IOSP	OPTIONS	COMMON STOCK (461)	$0.00	March 1, 2011	461	Disposed
May 11, 2004	IOSP	OPTIONS	COMMON STOCK (2,304)	$13.11	March 1, 2011	2,304	Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).