Robert I Paller

Insider

First SEC filing: Nov. 13, 2009 · Latest: Nov. 13, 2009

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.
Initial holdings The stakes this person held when they first started reporting.

Insider at

IOSP selling Feb. 24, 2020

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 60 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

60 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 26, 2024	IOSP	A	782	—	—	14,343 Direct	+5.77%	Acquired	(price as of 2026-08-20)
Nov. 10, 2023	IOSP	M	977	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 10, 2023	IOSP	F	447	$100.54	$44,941	11,681 Direct	-3.69%	Disposed	-8.1% (price as of 2026-08-20)
Nov. 10, 2023	IOSP	M	977	$46.03	$44,971	12,128 Direct	+8.76%	Acquired	100.6% (price as of 2026-08-20)
Feb. 27, 2023	IOSP	A	297	—	—	297 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 27, 2023	IOSP	A	594	—	—	11,151 Direct	+5.63%	Acquired	(price as of 2026-08-20)
Nov. 17, 2022	IOSP	M	1,089	$41.31	$44,987	0 Direct	-100.00%	Disposed	123.6% (price as of 2026-08-20)
Nov. 17, 2022	IOSP	F	411	$109.37	$44,951	15,239 Direct	-2.63%	Disposed	-15.6% (price as of 2026-08-20)
Nov. 17, 2022	IOSP	M	1,089	$41.31	$44,987	15,650 Direct	+7.48%	Acquired	123.6% (price as of 2026-08-20)
March 11, 2022	IOSP	M	293	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 11, 2022	IOSP	M	293	—	—	14,561 Direct	+2.05%	Acquired	(price as of 2026-08-20)
Feb. 25, 2022	IOSP	M	740	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 25, 2022	IOSP	M	740	—	—	14,268 Direct	+5.47%	Acquired	(price as of 2026-08-20)
Feb. 21, 2022	IOSP	A	652	—	—	13,528 Direct	+5.06%	Acquired	(price as of 2026-08-20)
Feb. 21, 2022	IOSP	A	326	—	—	326 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 9, 2021	IOSP	M	1,522	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 9, 2021	IOSP	F	485	$92.81	$45,013	12,876 Direct	-3.63%	Disposed	-0.5% (price as of 2026-08-20)
Nov. 9, 2021	IOSP	M	1,552	$29.56	$45,877	13,361 Direct	+13.14%	Acquired	212.4% (price as of 2026-08-20)
March 1, 2021	IOSP	M	283	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 1, 2021	IOSP	M	283	—	—	11,809 Direct	+2.46%	Acquired	(price as of 2026-08-20)
Feb. 22, 2021	IOSP	A	601	—	—	601 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2021	IOSP	A	300	—	—	300 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2021	IOSP	A	300	—	—	300 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2021	IOSP	A	601	—	—	12,127 Direct	+5.21%	Acquired	(price as of 2026-08-20)
Feb. 19, 2021	IOSP	M	1,660	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 19, 2021	IOSP	F	462	$97.37	$44,985	11,526 Direct	-3.85%	Disposed	-5.2% (price as of 2026-08-20)
Feb. 19, 2021	IOSP	M	1,660	$27.11	$45,003	11,988 Direct	+16.07%	Acquired	240.6% (price as of 2026-08-20)
Feb. 24, 2020	IOSP	A	627	—	—	627 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2020	IOSP	A	313	—	—	313 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2020	IOSP	M	3,673	$12.24	$44,958	0 Direct	—	Acquired	654.5% (price as of 2026-08-20)
Feb. 24, 2020	IOSP	S	1,730	$91.75	$158,728	10,328 Direct	-14.35%	Disposed	0.7% (price as of 2026-08-20)
Feb. 24, 2020	IOSP	M	3,673	$12.24	$44,958	12,058 Direct	+43.80%	Acquired	654.5% (price as of 2026-08-20)
March 21, 2019	IOSP	M	441	—	—	14,402 Direct	+3.16%	Acquired	(price as of 2026-08-20)
March 21, 2019	IOSP	F	181	$82.37	$14,909	8,385 Direct	-2.11%	Disposed	12.1% (price as of 2026-08-20)
March 21, 2019	IOSP	M	441	—	—	8,566 Direct	+5.43%	Acquired	(price as of 2026-08-20)
Feb. 25, 2019	IOSP	A	370	$81.07	$29,996	14,843 Direct	+2.56%	Acquired	13.9% (price as of 2026-08-20)
Feb. 25, 2019	IOSP	A	740	—	—	14,473 Direct	+5.39%	Acquired	(price as of 2026-08-20)
Feb. 27, 2018	IOSP	M	444	—	—	13,733 Direct	-3.13%	Disposed	(price as of 2026-08-20)
Feb. 27, 2018	IOSP	A	444	—	—	14,177 Direct	+3.23%	Acquired	(price as of 2026-08-20)
Feb. 27, 2018	IOSP	M	444	—	—	8,125 Direct	+5.78%	Acquired	(price as of 2026-08-20)
Feb. 20, 2018	IOSP	A	880	$68.20	$60,016	14,177 Direct	+6.62%	Acquired	35.4% (price as of 2026-08-20)
Feb. 20, 2018	IOSP	A	293	—	—	13,297 Direct	+2.25%	Acquired	(price as of 2026-08-20)
Feb. 21, 2017	IOSP	A	283	—	—	13,004 Direct	+2.22%	Acquired	(price as of 2026-08-20)
Feb. 21, 2017	IOSP	A	850	$70.60	$60,010	12,721 Direct	+7.16%	Acquired	30.8% (price as of 2026-08-20)
May 9, 2016	IOSP	M	1,000	—	—	11,871 Direct	-7.77%	Disposed	(price as of 2026-08-20)
May 9, 2016	IOSP	M	1,000	—	—	7,681 Direct	+14.97%	Acquired	(price as of 2026-08-20)
Feb. 22, 2016	IOSP	A	441	—	—	12,871 Direct	+3.55%	Acquired	(price as of 2026-08-20)
Feb. 22, 2016	IOSP	A	1,030	$44.18	$45,505	12,430 Direct	+9.04%	Acquired	109.0% (price as of 2026-08-20)
Feb. 23, 2015	IOSP	A	444	—	—	11,512 Direct	+4.01%	Acquired	(price as of 2026-08-20)
Feb. 23, 2015	IOSP	A	1,035	$43.95	$45,488	11,068 Direct	+10.32%	Acquired	110.1% (price as of 2026-08-20)
Feb. 14, 2014	IOSP	A	1,089	$46.03	$50,127	10,033 Direct	+12.18%	Acquired	100.6% (price as of 2026-08-20)
July 5, 2013	IOSP	J	559	$40.18	$22,461	6,681 Direct	+9.13%	Acquired	129.8% (price as of 2026-08-20)
Feb. 20, 2013	IOSP	A	1,089	$41.31	$44,987	8,944 Direct	+13.86%	Acquired	123.6% (price as of 2026-08-20)
July 6, 2012	IOSP	J	759	$29.61	$22,474	6,122 Direct	+14.15%	Acquired	211.9% (price as of 2026-08-20)
July 6, 2012	IOSP	J	759	$26.01	$19,742	6,122 Direct	+14.15%	Acquired	255.1% (price as of 2026-08-20)
Feb. 23, 2012	IOSP	A	1,522	$29.56	$44,990	7,855 Direct	+24.03%	Acquired	212.4% (price as of 2026-08-20)
July 6, 2011	IOSP	J	297	$33.61	$9,982	5,363 Direct	+5.86%	Acquired	174.8% (price as of 2026-08-20)
Feb. 22, 2011	IOSP	A	1,660	$27.11	$45,003	6,333 Direct	+35.52%	Acquired	240.6% (price as of 2026-08-20)
Aug. 5, 2010	IOSP	P	2,000	$12.40	$24,800	5,066 Direct	+65.23%	Acquired	644.8% (price as of 2026-08-20)
July 2, 2010	IOSP	J	1,066	$9.38	$9,999	3,066 Direct	+53.30%	Acquired	884.5% (price as of 2026-08-20)
May 24, 2010	IOSP	A	1,000	—	—	4,673 Direct	+27.23%	Acquired	(price as of 2026-08-20)
May 24, 2010	IOSP	A	3,673	$12.25	$44,994	3,673 Direct	—	Acquired	653.9% (price as of 2026-08-20)
March 31, 2010	IOSP	P	2,000	$11.56	$23,120	2,000 Direct	—	Acquired	698.9% (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
Nov. 10, 2023	IOSP	Stock Option	Common Stock (977)	$46.03	Feb. 14, 2024	977	Disposed
Feb. 27, 2023	IOSP	Stock Option	Common Stock (297)	$109.42	Feb. 27, 2033	297	Acquired
Nov. 17, 2022	IOSP	Stock Option	Common Stock (1,089)	$41.31	Feb. 20, 2023	1,089	Disposed
March 11, 2022	IOSP	Stock Option	Common Stock (293)	$0.00	Feb. 20, 2028	293	Disposed
Feb. 25, 2022	IOSP	Common Stock	Common Stock (740)	$0.00	Feb. 25, 2029	740	Disposed
Feb. 21, 2022	IOSP	Stock Option	Common Stock (326)	$99.68	Feb. 21, 2032	326	Acquired
Nov. 9, 2021	IOSP	Stock Option	Common Stock (1,522)	$29.56	Feb. 12, 2022	1,522	Disposed
March 1, 2021	IOSP	Stock Option	Common Stock (283)	$0.00	March 21, 2021	283	Disposed
Feb. 22, 2021	IOSP	stock option	Common Stock (601)	$0.00	Feb. 22, 2024	601	Acquired
Feb. 22, 2021	IOSP	stock option	Common Stock (300)	$99.85	Feb. 22, 2031	300	Acquired
Feb. 22, 2021	IOSP	Stock Option	Common Stock (300)	$99.85	Feb. 22, 2031	300	Acquired
Feb. 19, 2021	IOSP	Stock Option	Common Stock (1,660)	$27.11	Feb. 22, 2021	1,660	Disposed
Feb. 24, 2020	IOSP	stock option	stock option (627)	$0.00	Feb. 24, 2023	627	Acquired
Feb. 24, 2020	IOSP	Stock Option	stock option (313)	$95.70	Feb. 24, 2030	313	Acquired
Feb. 24, 2020	IOSP	Stock Option	Common Stock (3,673)	$12.24	May 24, 2020	3,673	Acquired
March 21, 2019	IOSP	Stock Option	Common Stock (441)	$0.00	Feb. 22, 2025	441	Acquired
Feb. 25, 2019	IOSP	Stock Options	Common Stock (370)	$81.07	Feb. 25, 2029	370	Acquired
Feb. 25, 2019	IOSP	Stock Options	Common Stock (740)	$0.00	Feb. 25, 2029	740	Acquired
Feb. 27, 2018	IOSP	Stock Options	common Stock (444)	$0.00	Feb. 23, 2025	444	Disposed
Feb. 27, 2018	IOSP	Stock Options	Common Stock (444)	$0.00	Feb. 23, 2025	444	Acquired
Feb. 20, 2018	IOSP	Stock Option	Common Stock (880)	$68.20	Feb. 20, 2028	880	Acquired
Feb. 20, 2018	IOSP	Stock Option	Common Stock (293)	$0.00	Feb. 20, 2028	293	Acquired
Feb. 21, 2017	IOSP	Stock Options	Common Stock (283)	$0.00	Feb. 21, 2027	283	Acquired
Feb. 21, 2017	IOSP	Stock Options	Common Stock (850)	$70.60	Feb. 21, 2027	850	Acquired
May 9, 2016	IOSP	Stock Options	Common Stock (1,000)	$0.00	May 24, 2020	1,000	Disposed
Feb. 22, 2016	IOSP	Stock Options	Common Stock (441)	$0.00	Feb. 22, 2026	441	Acquired
Feb. 22, 2016	IOSP	Stock Options	Common Stock (1,030)	$44.18	Feb. 22, 2026	1,030	Acquired
Feb. 23, 2015	IOSP	Stock Options	Common Stock (444)	$0.00	Feb. 23, 2025	444	Acquired
Feb. 23, 2015	IOSP	Stock Options	Common Stock (1,035)	$43.95	Feb. 23, 2025	1,035	Acquired
Feb. 14, 2014	IOSP	Stock Options (NEDSOP)	Common Stock (1,089)	$46.03	Feb. 14, 2024	1,089	Acquired
Feb. 20, 2013	IOSP	Stock Options (NEDSOP)	Common Stock (1,089)	$41.31	Feb. 20, 2023	1,089	Acquired
Feb. 23, 2012	IOSP	Stock Options	Common Stock (1,522)	$29.56	Feb. 23, 2022	1,522	Acquired
Feb. 22, 2011	IOSP	Options	Common Stock (1,660)	$27.11	Feb. 22, 2021	1,660	Acquired
May 24, 2010	IOSP	Options	Common Stock (1,000)	$0.00	May 24, 2020	1,000	Acquired
May 24, 2010	IOSP	Options	Common Stock (3,673)	$12.25	May 24, 2020	3,673	Acquired

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

Initial ownership (Form 3) 1 holding

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Nov. 13, 2009	IOSP	Common Stock	0	Direct