Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 59 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

59 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Feb. 29, 2024 IOSP S 3,955 $124.21 $491,251 167,216 Direct -2.31% Disposed -21.6% (price as of 2026-10-02)
Feb. 27, 2024 IOSP S 5,572 $124.73 $694,996 167,216 Direct -3.22% Disposed -21.9% (price as of 2026-10-02)
Feb. 27, 2024 IOSP S 4,095 $124.12 $508,271 172,788 Direct -2.32% Disposed -21.5% (price as of 2026-10-02)
Feb. 26, 2024 IOSP S 100 $126.05 $12,605 164,667 Direct -0.06% Disposed -22.7% (price as of 2026-10-02)
Feb. 26, 2024 IOSP S 5,402 $125.27 $676,709 164,767 Direct -3.17% Disposed -22.2% (price as of 2026-10-02)
Feb. 26, 2024 IOSP S 4,165 $124.65 $519,167 170,169 Direct -2.39% Disposed -21.9% (price as of 2026-10-02)
Feb. 23, 2024 IOSP S 11 $125.15 $1,377 174,334 Direct -0.01% Disposed -22.2% (price as of 2026-10-02)
Feb. 23, 2024 IOSP S 6,899 $124.66 $860,029 174,345 Direct -3.81% Disposed -21.9% (price as of 2026-10-02)
Feb. 23, 2024 IOSP S 2,757 $123.63 $340,848 181,244 Direct -1.50% Disposed -21.2% (price as of 2026-10-02)
March 3, 2023 IOSP S 717 $110.92 $79,530 138,458 Direct -0.52% Disposed -12.2% (price as of 2026-10-02)
March 3, 2023 IOSP S 714 $109.74 $78,354 139,175 Direct -0.51% Disposed -11.2% (price as of 2026-10-02)
March 3, 2023 IOSP S 1,377 $108.92 $149,983 139,889 Direct -0.97% Disposed -10.6% (price as of 2026-10-02)
March 3, 2023 IOSP S 1,159 $108.14 $125,334 141,266 Direct -0.81% Disposed -9.9% (price as of 2026-10-02)
March 3, 2023 IOSP S 1,341 $110.95 $148,784 142,425 Direct -0.93% Disposed -12.2% (price as of 2026-10-02)
March 3, 2023 IOSP S 1,320 $109.78 $144,910 143,766 Direct -0.91% Disposed -11.3% (price as of 2026-10-02)
March 3, 2023 IOSP S 2,610 $108.85 $284,098 145,086 Direct -1.77% Disposed -10.5% (price as of 2026-10-02)
March 3, 2023 IOSP S 2,201 $108.11 $237,950 147,696 Direct -1.47% Disposed -9.9% (price as of 2026-10-02)
March 2, 2023 IOSP S 1,294 $109.83 $142,120 149,897 Direct -0.86% Disposed -11.3% (price as of 2026-10-02)
March 2, 2023 IOSP S 6,293 $109.05 $686,252 151,191 Direct -4.00% Disposed -10.7% (price as of 2026-10-02)
March 2, 2023 IOSP S 3,853 $108.42 $417,742 157,484 Direct -2.39% Disposed -10.2% (price as of 2026-10-02)
March 1, 2023 IOSP S 275 $110.90 $30,498 157,370 Direct -0.17% Disposed -12.2% (price as of 2026-10-02)
March 1, 2023 IOSP S 4,328 $110.06 $476,340 157,645 Direct -2.67% Disposed -11.5% (price as of 2026-10-02)
March 1, 2023 IOSP S 4,540 $109.28 $496,131 161,973 Direct -2.73% Disposed -10.9% (price as of 2026-10-02)
Feb. 28, 2023 IOSP S 5,444 $110.97 $604,121 166,800 Direct -3.16% Disposed -12.2% (price as of 2026-10-02)
Feb. 28, 2023 IOSP S 287 $111.58 $32,023 166,513 Direct -0.17% Disposed -12.7% (price as of 2026-10-02)
Feb. 28, 2023 IOSP S 3,415 $110.04 $375,787 172,244 Direct -1.94% Disposed -11.5% (price as of 2026-10-02)
Feb. 27, 2023 IOSP S 6,699 $111.16 $744,661 176,258 Direct -3.66% Disposed -12.4% (price as of 2026-10-02)
Feb. 27, 2023 IOSP S 1,925 $111.69 $215,003 174,333 Direct -1.09% Disposed -12.8% (price as of 2026-10-02)
Feb. 27, 2023 IOSP S 501 $110.06 $55,140 182,957 Direct -0.27% Disposed -11.5% (price as of 2026-10-02)
Feb. 27, 2023 IOSP S 21 $108.31 $2,275 183,458 Direct -0.01% Disposed -10.1% (price as of 2026-10-02)
Feb. 24, 2023 IOSP S 3,405 $108.36 $368,966 187,358 Direct -1.78% Disposed -10.1% (price as of 2026-10-02)
Feb. 24, 2023 IOSP S 3,879 $109.20 $423,587 183,479 Direct -2.07% Disposed -10.8% (price as of 2026-10-02)
Feb. 24, 2023 IOSP S 1,862 $107.29 $199,774 190,763 Direct -0.97% Disposed -9.2% (price as of 2026-10-02)
Feb. 25, 2022 IOSP S 415 $97.47 $40,450 163,827 Direct -0.25% Disposed -0.1% (price as of 2026-10-02)
Feb. 25, 2022 IOSP S 4,033 $96.69 $389,951 164,242 Direct -2.40% Disposed 0.7% (price as of 2026-10-02)
Feb. 25, 2022 IOSP S 600 $97.44 $58,464 163,827 Direct -0.36% Disposed 0.0% (price as of 2026-10-02)
Feb. 25, 2022 IOSP S 6,400 $96.71 $618,944 164,427 Direct -3.75% Disposed 0.7% (price as of 2026-10-02)
Nov. 9, 2021 IOSP S 600 $94.04 $56,424 160,685 Direct -0.37% Disposed 3.6% (price as of 2026-10-02)
Nov. 9, 2021 IOSP S 9,021 $93.56 $844,005 161,285 Direct -5.30% Disposed 4.1% (price as of 2026-10-02)
Nov. 9, 2021 IOSP S 2,379 $92.56 $220,200 170,306 Direct -1.38% Disposed 5.2% (price as of 2026-10-02)
May 11, 2021 IOSP S 25 $101.81 $2,545 172,685 Direct -0.01% Disposed -4.3% (price as of 2026-10-02)

Showing latest 100 of 335 transactions

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Feb. 29, 2024 IOSP Employee Stock Option Common Stock (3,955) $99.85 Feb. 22, 2031 3,955 Disposed
Feb. 22, 2024 IOSP Stock Appreciation Right Common Stock (1,318) $99.85 Feb. 22, 2031 1,318 Disposed
March 3, 2023 IOSP Employee Stock Option Common Stock (3,967) $95.70 Feb. 24, 2030 3,967 Disposed
Feb. 27, 2023 IOSP Employee stock option (right to buy) Common Stock (3,979) $109.42 Feb. 27, 2033 3,979 Acquired
Feb. 24, 2023 IOSP Employee Stock Option Common Stock (3,967) $95.70 Feb. 24, 2030 3,967 Acquired
Feb. 24, 2023 IOSP Stock Appreciation Right Common Stock (1,323) $95.70 Feb. 24, 2030 1,323 Disposed
Feb. 24, 2023 IOSP Employee Stock Option Common Stock (36,581) $0.00 Feb. 20, 2028 36,581 Disposed
Feb. 20, 2023 IOSP Stock Option Common Stock (36,581) $0.00 March 15, 2024 36,581 Acquired
Feb. 25, 2022 IOSP Stock Option Common Stock (4,448) $97.47 Feb. 25, 2029 4,448 Disposed
Feb. 25, 2022 IOSP Stock Option Common Stock (10,765) $96.69 Feb. 25, 2029 10,765 Disposed
Feb. 21, 2022 IOSP Employee Stock Option Common Stock (4,131) $99.68 Feb. 21, 2032 4,131 Acquired
May 11, 2021 IOSP Stock Option Common Stock (778) $68.20 Feb. 20, 2028 778 Disposed
May 10, 2021 IOSP Stock Option Common Stock (792) $68.20 Feb. 20, 2028 792 Disposed
May 7, 2021 IOSP Stock Option Common Stock (3,418) $68.20 Feb. 20, 2028 3,418 Disposed
Feb. 22, 2021 IOSP stock option Common Stock (1,318) $0.00 Feb. 22, 2024 1,318 Acquired
Feb. 22, 2021 IOSP stock option Common Stock (3,955) $99.85 Feb. 22, 2031 3,955 Acquired
Feb. 22, 2021 IOSP Stock Option Common Stock (3,955) $99.85 Feb. 22, 2031 3,955 Acquired
Feb. 24, 2020 IOSP stock option stock option (29,095) $0.00 Feb. 24, 2023 29,095 Acquired
Feb. 24, 2020 IOSP Stock Option stock option (3,967) $95.70 Feb. 24, 2030 3,967 Acquired
Feb. 24, 2020 IOSP Stock Option Common Stock (4,589) $70.60 Feb. 21, 2027 4,589 Acquired
Feb. 21, 2020 IOSP Stock Option Common Stock (33,654) $0.00 Feb. 21, 2027 33,654 Disposed
Feb. 25, 2019 IOSP Stock Options (CSOP B) Common Stock (4,448) $81.07 Feb. 25, 2029 4,448 Acquired
Feb. 25, 2019 IOSP Stock Options (PRSOP) Common Stock (32,620) $0.00 Feb. 25, 2029 32,620 Acquired
Feb. 22, 2019 IOSP Stock Options (CSOP B) Common Stock (6,805) $43.95 Feb. 23, 2025 6,805 Disposed
Feb. 22, 2019 IOSP Stock Options (CSOP B) Common Stock (7,040) $44.18 Feb. 22, 2026 7,040 Disposed
Feb. 22, 2019 IOSP Stock Options (PRSOP) Common Stock (21,120) $0.00 Feb. 22, 2026 21,120 Disposed
Feb. 28, 2018 IOSP Stock Options Common Stock (16,331) $0.00 Feb. 23, 2025 16,331 Disposed
Feb. 20, 2018 IOSP Stock Option Common Stock (36,581) $0.00 Feb. 20, 2028 36,581 Acquired
Feb. 20, 2018 IOSP Stock Option Common Stock (4,988) $68.20 Feb. 20, 2028 4,988 Acquired
March 17, 2017 IOSP Stock Options Common Stock (6,232) $46.03 Feb. 14, 2024 6,232 Disposed
March 17, 2017 IOSP Stock Options Common Stock (14,023) $0.00 Feb. 14, 2024 14,023 Disposed
March 17, 2017 IOSP Stock Options Common Stock (6,232) $46.03 Feb. 14, 2024 6,232 Disposed
March 17, 2017 IOSP Stock Options Common Stock (14,023) $0.00 Feb. 14, 2024 14,023 Disposed
Feb. 21, 2017 IOSP Stock Options Common Stock (4,589) $70.60 Feb. 21, 2027 4,589 Acquired
Feb. 21, 2017 IOSP Stock Options Common Stock (33,654) $0.00 March 15, 2020 33,654 Acquired
Nov. 11, 2016 IOSP Stock Option Common Stock (6,658) $41.31 Feb. 20, 2023 6,658 Disposed
Nov. 11, 2016 IOSP Stock Option Common Stock (684) $31.54 Dec. 23, 2016 684 Disposed
Nov. 11, 2016 IOSP Stock Option Common Stock (684) $31.54 Dec. 23, 2016 684 Acquired
Feb. 23, 2016 IOSP Stock Options Common Stock (19,975) $0.00 Feb. 20, 2025 19,975 Disposed
Feb. 22, 2016 IOSP Stock Options Common Stock (21,120) $0.00 Feb. 22, 2026 21,120 Acquired
Feb. 22, 2016 IOSP Stock Options Common Stock (7,040) $44.18 Feb. 22, 2026 7,040 Acquired
March 2, 2015 IOSP Stock Options Common Stock (7,493) $29.56 Feb. 23, 2022 7,493 Disposed
March 2, 2015 IOSP Stock Options Common Stock (22,478) $0.00 Feb. 23, 2022 22,478 Disposed
Feb. 23, 2015 IOSP Stock Options Common Stock (20,414) $0.00 Feb. 23, 2025 20,414 Acquired
Feb. 23, 2015 IOSP Stock Options Common Stock (6,805) $43.95 Feb. 23, 2025 6,805 Acquired
May 9, 2014 IOSP Stock Options Common Stock (30,000) $4.07 April 2, 2019 30,000 Disposed
Feb. 25, 2014 IOSP Stock Options (Co-Invest) Common Stock (4,800) $0.00 Feb. 25, 2021 4,800 Disposed
Feb. 14, 2014 IOSP Stock Options (PRSOP) Common Stock (18,697) $0.00 Feb. 14, 2018 18,697 Acquired
Feb. 14, 2014 IOSP Stock Options (CSOP B) Common Stock (6,232) $46.03 Feb. 14, 2024 6,232 Acquired
May 9, 2013 IOSP Stock Option Common Stock (30,000) $4.07 April 2, 2019 30,000 Disposed
Feb. 26, 2013 IOSP Stock Options Common Stock (11,760) $0.00 Feb. 25, 2020 11,760 Disposed
Feb. 21, 2013 IOSP Stock Options Common Stock (3,052) $27.08 Feb. 21, 2017 3,052 Disposed
Feb. 20, 2013 IOSP Stock Options (PRSOP) Common Stock (19,975) $0.00 Feb. 20, 2023 19,975 Acquired
Feb. 20, 2013 IOSP Stock Options (CSOP B) Common Stock (6,658) $41.31 Feb. 20, 2023 6,658 Acquired
Feb. 19, 2013 IOSP Stock Option (PRSOP) Common Stock (54,046) $0.00 Feb. 17, 2020 54,046 Disposed
Feb. 19, 2013 IOSP Stock Option (CSOP B) Common Stock (12,953) $10.38 Feb. 17, 2020 12,953 Disposed
Nov. 9, 2012 IOSP Options Common Stock (513) $14.03 Jan. 17, 2013 513 Disposed
Nov. 9, 2012 IOSP Options Common Stock (513) $14.03 Jan. 17, 2013 513 Acquired
May 21, 2012 IOSP Stock Options Common Stock (37,120) $0.00 March 24, 2019 37,120 Disposed
May 16, 2012 IOSP Stock Options Common Stock (3,964) $4.62 March 24, 2019 3,964 Disposed
May 16, 2012 IOSP Stock Options Common Stock (3,964) $4.62 March 24, 2019 3,964 Disposed
May 15, 2012 IOSP Stock Options Common Stock (10,313) $4.62 March 24, 2019 10,313 Disposed
May 15, 2012 IOSP Stock Options Common Stock (9,887) $4.07 April 2, 2019 9,887 Disposed
May 14, 2012 IOSP Stock Options Common Stock (15,713) $4.07 April 2, 2019 15,713 Disposed
May 11, 2012 IOSP Stock Options Common Stock (4,400) $4.07 March 24, 2019 4,400 Disposed
May 11, 2012 IOSP Stock Options Common Stock (13,636) $0.00 March 24, 2019 13,636 Disposed
May 11, 2012 IOSP Stock Options Common Stock (4,400) $4.07 March 24, 2019 4,400 Disposed
May 11, 2012 IOSP Stock Options Common Stock (13,636) $0.00 March 24, 2019 13,636 Disposed
May 10, 2012 IOSP Stock Options Common Stock (1,364) $0.00 March 24, 2019 1,364 Disposed
May 10, 2012 IOSP Stock Options Common Stock (9,347) $20.23 Feb. 20, 2018 9,347 Disposed
May 10, 2012 IOSP Stock Options Common Stock (1,364) $0.00 March 24, 2019 1,364 Disposed
May 10, 2012 IOSP Stock Options Common Stock (9,347) $20.23 Feb. 20, 2018 9,347 Disposed
Feb. 28, 2012 IOSP Stock Options Common Stock (5,675) $0.00 Feb. 27, 2019 5,675 Disposed
Feb. 23, 2012 IOSP Stock Options Common Stock (22,478) $0.00 Feb. 23, 2022 22,478 Acquired
Feb. 23, 2012 IOSP Stock Options Common Stock (7,493) $29.56 Feb. 23, 2022 7,493 Acquired
May 16, 2011 IOSP Stock Options Common Stock (45,000) $0.00 April 2, 2019 45,000 Disposed
May 16, 2011 IOSP Stock Options Common Stock (5,270) $9.96 Feb. 13, 2016 5,270 Disposed
March 2, 2011 IOSP Stock Options Common Stock (30,000) $0.00 March 2, 2017 30,000 Disposed
March 2, 2011 IOSP Stock Options Common Stock (30,000) $0.00 March 2, 2017 30,000 Disposed
March 1, 2011 IOSP Stock Options Common Stock (24,303) $0.00 Feb. 20, 2018 24,303 Disposed
March 1, 2011 IOSP Stock Options Common Stock (15,800) $0.00 Feb. 13, 2016 15,800 Disposed
March 1, 2011 IOSP Stock Options Common stock (2,000) $0.00 March 1, 2018 2,000 Disposed
March 1, 2011 IOSP Stock Options Common Stock (24,303) $0.00 Feb. 20, 2018 24,303 Disposed
March 1, 2011 IOSP Stock Options Common Stock (15,800) $0.00 Feb. 13, 2016 15,800 Disposed
March 1, 2011 IOSP Stock Options Common stock (2,000) $0.00 March 1, 2018 2,000 Disposed
Feb. 25, 2011 IOSP Stock Options Common Stock (4,800) $0.00 Feb. 25, 2021 4,800 Acquired
March 18, 2010 IOSP Options Common Stock (200) $0.00 March 12, 2017 200 Disposed
March 5, 2010 IOSP Options Common Stock (1,500) $0.00 March 5, 2017 1,500 Disposed
March 4, 2010 IOSP Options Common Stock (20,000) $0.00 March 2, 2017 20,000 Disposed
Feb. 25, 2010 IOSP Options Common Stock (11,760) $0.00 Feb. 25, 2020 11,760 Acquired
Feb. 17, 2010 IOSP Options Common Stock (54,046) $0.00 Feb. 17, 2020 54,046 Acquired
Feb. 17, 2010 IOSP Options Common Stock (12,953) $10.38 Feb. 17, 2020 12,953 Acquired
April 2, 2009 IOSP Options Common Stock (15,000) $0.00 April 2, 2019 15,000 Acquired
April 2, 2009 IOSP Options Common Stock (45,000) $0.00 April 2, 2019 45,000 Acquired
April 2, 2009 IOSP Options Common Stock (30,000) $4.07 April 2, 2019 30,000 Acquired
April 2, 2009 IOSP Options Common Stock (30,000) $4.07 April 2, 2019 30,000 Acquired
April 2, 2009 IOSP Options Common Stock (30,000) $4.07 April 2, 2019 30,000 Acquired
March 24, 2009 IOSP Options Common Stock (37,120) $0.00 March 24, 2019 37,120 Acquired
March 24, 2009 IOSP Options Common Stock (14,277) $4.62 March 24, 2019 14,277 Acquired
Feb. 27, 2009 IOSP Options Common Stock (5,675) $0.00 Feb. 27, 2019 5,675 Acquired

Showing latest 100 of 116 transactions

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

Initial ownership (Form 3) 3 holdings

07

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

DateTickerSecuritySharesOwnership
Feb. 25, 2020 ASIX Common Stock, par value $0.01 0 Direct
Sept. 15, 2005 IOSP OPTIONS→ COMMON STOCK (600) 600 Direct
Sept. 15, 2005 IOSP OPTIONS→ COMMON STOCK (5,000) 5,000 Direct

Compensation (DEF 14A)

08

Matched by name from proxy statements (DEF 14A) — verify against the filing.

IOSP

CEO
Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2021 $1,243,462 · · · $2,385,100 · $98,166 $9,897,900
2020 $1,192,500 $500,000 · · $2,505,000 · $159,375 $7,454,444
2019 $1,125,000 · · · $1,611,563 · $111,013 $6,079,287

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.