Catherine Hessner

CIK 1270119 · View on SEC EDGAR ↗

Insider

First SEC filing: Nov. 18, 2003 · Latest: Nov. 18, 2003

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 70 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

70 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
May 11, 2021 IOSP S 197 $101.53 $20,001 15,194 Direct -1.28% Disposed -6.7% (price as of 2026-08-19)
May 11, 2021 IOSP S 438 $101.21 $44,330 15,194 Direct -2.80% Disposed -6.4% (price as of 2026-08-19)
May 11, 2021 IOSP S 195 $100.50 $19,598 15,194 Direct -1.27% Disposed -5.8% (price as of 2026-08-19)
May 11, 2021 IOSP S 57 $99.79 $5,688 15,389 Direct -0.37% Disposed -5.1% (price as of 2026-08-19)
May 10, 2021 IOSP S 51 $103.13 $5,260 15,194 Direct -0.33% Disposed -8.2% (price as of 2026-08-19)
May 10, 2021 IOSP S 219 $102.49 $22,445 15,194 Direct -1.42% Disposed -7.6% (price as of 2026-08-19)
May 10, 2021 IOSP S 263 $101.68 $26,742 15,194 Direct -1.70% Disposed -6.9% (price as of 2026-08-19)
May 10, 2021 IOSP S 407 $100.99 $41,103 15,457 Direct -2.57% Disposed -6.2% (price as of 2026-08-19)
May 7, 2021 IOSP S 1,461 $102.20 $149,314 15,272 Direct -8.73% Disposed -7.3% (price as of 2026-08-19)
May 7, 2021 IOSP S 78 $103.02 $8,036 15,194 Direct -0.51% Disposed -8.1% (price as of 2026-08-19)
May 7, 2021 IOSP S 775 $101.93 $78,996 15,194 Direct -4.85% Disposed -7.1% (price as of 2026-08-19)
May 7, 2021 IOSP S 954 $101.82 $97,136 15,194 Direct -5.91% Disposed -7.0% (price as of 2026-08-19)
May 7, 2021 IOSP S 1,696 $101.51 $172,161 15,194 Direct -10.04% Disposed -6.7% (price as of 2026-08-19)
June 2, 2020 IOSP S 2,855 $77.86 $222,290 15,000 Direct -15.99% Disposed 21.6% (price as of 2026-08-19)
Nov. 12, 2019 IOSP S 5,000 $99.59 $497,950 15,000 Direct -25.00% Disposed -4.9% (price as of 2026-08-19)
June 4, 2019 IOSP S 923 $83.97 $77,504 20,000 Direct -4.41% Disposed 12.8% (price as of 2026-08-19)
June 4, 2019 IOSP S 1,077 $83.35 $89,768 20,923 Direct -4.90% Disposed 13.6% (price as of 2026-08-19)
Feb. 22, 2019 IOSP S 1,144 $80.51 $92,103 22,000 Direct -4.94% Disposed 17.6% (price as of 2026-08-19)
Feb. 22, 2019 IOSP S 3,145 $80.51 $253,204 22,000 Direct -12.51% Disposed 17.6% (price as of 2026-08-19)
June 5, 2018 IOSP S 2,910 $78.24 $227,678 22,000 Direct -11.68% Disposed 21.1% (price as of 2026-08-19)
Feb. 26, 2018 IOSP S 1,382 $68.24 $94,308 24,910 Direct -5.26% Disposed 38.8% (price as of 2026-08-19)
Nov. 28, 2017 IOSP S 707 $71.56 $50,593 25,084 Direct -2.74% Disposed 32.4% (price as of 2026-08-19)
March 17, 2017 IOSP S 3,000 $63.15 $189,450 24,910 Direct -10.75% Disposed 50.0% (price as of 2026-08-19)
Feb. 17, 2017 IOSP S 1,196 $70.91 $84,808 28,237 Direct -4.06% Disposed 33.6% (price as of 2026-08-19)
Feb. 17, 2017 IOSP S 2,468 $70.91 $175,006 28,237 Direct -8.04% Disposed 33.6% (price as of 2026-08-19)
Nov. 18, 2016 IOSP S 554 $63.15 $34,985 28,237 Direct -1.92% Disposed 50.0% (price as of 2026-08-19)
Nov. 18, 2016 IOSP S 445 $63.15 $28,102 28,237 Direct -1.55% Disposed 50.0% (price as of 2026-08-19)
March 2, 2016 IOSP S 1,455 $43.80 $63,729 28,237 Direct -4.90% Disposed 116.2% (price as of 2026-08-19)
May 11, 2015 IOSP S 5,000 $44.03 $220,150 28,237 Direct -15.04% Disposed 115.1% (price as of 2026-08-19)
Feb. 24, 2015 IOSP S 3,670 $43.90 $161,113 33,237 Direct -9.94% Disposed 115.7% (price as of 2026-08-19)

Showing latest 100 of 231 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.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
May 11, 2021 IOSP Stock Option Common Stock (197) $70.60 Feb. 21, 2027 197 Disposed
May 11, 2021 IOSP Stock Option Common Stock (438) $70.60 Feb. 21, 2027 438 Disposed
May 11, 2021 IOSP Stock Option Common Stock (252) $81.07 Feb. 25, 2029 252 Disposed
May 10, 2021 IOSP Stock Option Common Stock (51) $81.07 Feb. 25, 2029 51 Disposed
May 10, 2021 IOSP Stock Option Common Stock (219) $81.07 Feb. 25, 2029 219 Disposed
May 10, 2021 IOSP Stock Option Common Stock (670) $0.00 Feb. 20, 2028 670 Disposed
May 7, 2021 IOSP Stock Option Common Stock (775) $68.20 Feb. 20, 2028 775 Disposed
May 7, 2021 IOSP Stock Option Common Stock (1,539) $0.00 Feb. 20, 2028 1,539 Disposed
May 7, 2021 IOSP Stock Option Common Stock (954) $0.00 Feb. 24, 2030 954 Disposed
May 7, 2021 IOSP Stock Option Common Stock (1,696) $0.00 Feb. 25, 2029 1,696 Disposed
Feb. 22, 2021 IOSP stock option Common Stock (194) $0.00 Feb. 22, 2024 194 Acquired
Feb. 22, 2021 IOSP stock option Common Stock (582) $99.85 Feb. 22, 2031 582 Acquired
Feb. 22, 2021 IOSP Stock Option Common Stock (582) $99.85 Feb. 22, 2031 582 Acquired
June 2, 2020 IOSP Stock Option Common Stock (2,855) $0.00 Feb. 21, 2027 2,855 Disposed
Feb. 24, 2020 IOSP Stock Option stock option (290) $95.70 Feb. 24, 2030 290 Acquired
Feb. 24, 2020 IOSP stock option stock option (2,454) $0.00 Feb. 24, 2023 2,454 Acquired
Feb. 24, 2020 IOSP Stock Option stock option (255) $95.70 Feb. 24, 2030 255 Acquired
Feb. 25, 2019 IOSP Stock Options (CSOP B) Common Stock (219) $81.07 Feb. 25, 2029 219 Acquired
Feb. 25, 2019 IOSP Stock Options (CSOP A) Common Stock (303) $81.07 Feb. 25, 2029 303 Acquired
Feb. 25, 2019 IOSP Stock Options (PRSOP) Common Stock (2,348) $0.00 Feb. 25, 2029 2,348 Acquired
Feb. 22, 2019 IOSP Stock Options (CSOP B) Common Stock (1,144) $44.18 Feb. 22, 2026 1,144 Disposed
Feb. 22, 2019 IOSP Stock Options (PRSOP) Common Stock (3,145) $0.00 Feb. 22, 2026 3,145 Disposed
Feb. 26, 2018 IOSP Stock options Common Stock (531) $43.95 Feb. 23, 2025 531 Disposed
Feb. 26, 2018 IOSP Stock options Common Stock (654) $43.95 Feb. 23, 2025 654 Disposed
Feb. 26, 2018 IOSP Stock Options Common Stock (2,608) $0.00 Feb. 23, 2025 2,608 Disposed
Feb. 20, 2018 IOSP Stock Option Common Stock (3,488) $0.00 Feb. 20, 2028 3,488 Acquired
Feb. 20, 2018 IOSP Stock Option Common Stock (775) $68.20 Feb. 20, 2028 775 Acquired
Nov. 28, 2017 IOSP Stock Option Common Stock (881) $33.93 May 15, 2018 881 Disposed
Nov. 28, 2017 IOSP Stock Option Common Stock (881) $33.93 May 15, 2018 881 Acquired
Feb. 21, 2017 IOSP Stock Options Common Stock (438) $70.60 Feb. 21, 2017 438 Acquired
Feb. 21, 2017 IOSP Stock Options Common Stock (197) $70.60 Feb. 21, 2027 197 Acquired
Feb. 21, 2017 IOSP Stock Options Common Stock (2,855) $0.00 Feb. 21, 2027 2,855 Acquired
Feb. 17, 2017 IOSP Stock Options Common Stock (1,196) $46.03 Feb. 14, 2024 1,196 Disposed
Feb. 17, 2017 IOSP Stock Options Common Stock (2,468) $0.00 Feb. 14, 2024 2,468 Disposed
Nov. 18, 2016 IOSP Stock Options Common Stock (554) $41.31 Feb. 20, 2023 554 Disposed
Nov. 18, 2016 IOSP Stock Options Common Stock (445) $41.31 Feb. 20, 2023 445 Disposed
Feb. 22, 2016 IOSP Stock Options Common Stock (3,145) $0.00 Feb. 22, 2026 3,145 Acquired
Feb. 22, 2016 IOSP Stock Options Common Stock (1,144) $44.18 Feb. 22, 2026 1,144 Acquired
Feb. 24, 2015 IOSP Stock Options Common Stock (3,784) $0.00 Feb. 23, 2022 3,784 Disposed
Feb. 24, 2015 IOSP Stock Options Common Stock (419) $29.56 Feb. 23, 2022 419 Disposed
Feb. 24, 2015 IOSP Stock Options Common Stock (957) $29.56 Feb. 23, 2022 957 Disposed
Feb. 23, 2015 IOSP Stock Options Common Stock (3,260) $0.00 Feb. 23, 2025 3,260 Acquired
Feb. 23, 2015 IOSP Stock Options Common Stock (531) $43.95 Feb. 23, 2025 531 Acquired
Feb. 23, 2015 IOSP Stock Options Common Stock (654) $43.95 Feb. 23, 2025 654 Acquired
Feb. 25, 2014 IOSP Stock Options (Co-Invest) Common Stock (678) $0.00 Feb. 24, 2021 678 Disposed
Feb. 14, 2014 IOSP Stock Options (PRSOP) Common Stock (3,290) $0.00 Feb. 14, 2024 3,290 Acquired
Feb. 14, 2014 IOSP Stock Options (CSOP B) Common Stock (1,196) $46.03 Feb. 14, 2024 1,196 Acquired
Dec. 17, 2013 IOSP STOCK OPTIONS COMMON STOCK (1,248) $11.73 May 31, 2014 1,248 Disposed
Dec. 17, 2013 IOSP STOCK OPTIONS [F1] COMMON STOCK (1,248) $11.73 May 31, 2014 1,248 Acquired
May 9, 2013 IOSP Stock Options Common Stock (8,026) $0.00 March 17, 2020 8,026 Disposed
May 9, 2013 IOSP Stock Options Common Stock (1,949) $10.38 March 17, 2020 1,949 Disposed
May 9, 2013 IOSP Stock Options Common Stock (1,272) $27.08 Feb. 21, 2017 1,272 Disposed
May 9, 2013 IOSP Stock Options Common Stock (2) $27.08 Feb. 21, 2017 2 Disposed
Feb. 26, 2013 IOSP Stock Options Common Stock (1,845) $0.00 Feb. 25, 2020 1,845 Disposed
Feb. 20, 2013 IOSP Stock Options Common Stock (2,746) $0.00 Feb. 20, 2023 2,746 Disposed
Feb. 20, 2013 IOSP Stock Options (PRSOP) Common Stock (2,746) $0.00 Feb. 20, 2023 2,746 Acquired
Feb. 20, 2013 IOSP Stock Options (CSOP B) Common Stock (554) $41.31 Feb. 20, 2023 554 Acquired
Feb. 20, 2013 IOSP Stock Options (CSOP A) Common Stock (445) $41.31 Feb. 20, 2023 445 Acquired
Feb. 20, 2013 IOSP Stock Options (PRSOP) Common Stock (2,746) $41.31 Feb. 20, 2023 2,746 Acquired
Feb. 20, 2013 IOSP Stock Options (CSOP B) Common Stock (554) $41.31 Feb. 20, 2023 554 Acquired
Feb. 20, 2013 IOSP Stock Options (CSOP A) Common Stock (445) $41.31 Feb. 20, 2023 445 Acquired
Feb. 19, 2013 IOSP Stock Options (CSOP A) Common stock (149) $10.38 Feb. 17, 2020 149 Disposed
Aug. 13, 2012 IOSP Stock Option CommonStock (3,468) $4.62 March 24, 2019 3,468 Disposed
May 11, 2012 IOSP Stock Options Common Stock (9,536) $0.00 March 24, 2019 9,536 Disposed
Feb. 23, 2012 IOSP Stock Options Common Stock (3,784) $0.00 Feb. 23, 2022 3,784 Acquired
Feb. 23, 2012 IOSP Stock Options Common Stock (419) $29.56 Feb. 23, 2022 419 Acquired
Feb. 23, 2012 IOSP Stock Options Common Stock (957) $29.56 Feb. 23, 2022 957 Acquired
March 14, 2011 IOSP Stock Options Common Stock (8,820) $0.00 Feb. 13, 2016 8,820 Disposed
March 14, 2011 IOSP Stock Options Common Stock (8,820) $0.00 Feb. 13, 2016 8,820 Disposed
March 2, 2011 IOSP Stock Options Common Stock (1,659) $20.23 Feb. 20, 2018 1,659 Disposed
March 2, 2011 IOSP Stock Options Common Stock (1,268) $20.23 Feb. 20, 2018 1,268 Disposed
March 1, 2011 IOSP Stock Options Common Stock (8,049) $0.00 Feb. 20, 2018 8,049 Disposed
March 1, 2011 IOSP Stock Options Common Stock (1,200) $0.00 March 1, 2018 1,200 Disposed
Feb. 25, 2011 IOSP Options Common Stock (678) $0.00 Feb. 25, 2021 678 Acquired
Nov. 11, 2010 IOSP Options Common Stock (2,108) $9.96 Feb. 13, 2017 2,108 Disposed
Nov. 11, 2010 IOSP Options Common Stock (832) $9.96 Feb. 13, 2017 832 Disposed
March 12, 2010 IOSP Options Common Stock (200) $0.00 March 12, 2017 200 Disposed
March 5, 2010 IOSP Options Common Stock (354) $0.00 March 5, 2017 354 Disposed
Feb. 25, 2010 IOSP Options Common Stock (1,845) $0.00 Feb. 25, 2020 1,845 Acquired
Feb. 17, 2010 IOSP Options Common Stock (8,026) $0.00 Feb. 17, 2020 8,026 Acquired
Feb. 17, 2010 IOSP Options Common Stock (1,949) $10.38 Feb. 17, 2020 1,949 Acquired
Feb. 17, 2010 IOSP Options Common Stock (149) $10.38 Feb. 17, 2020 149 Acquired
March 24, 2009 IOSP Options Common Stock (9,536) $0.00 March 24, 2019 9,536 Acquired
March 24, 2009 IOSP Options Common Stock (3,468) $4.62 March 24, 2019 3,468 Acquired
March 2, 2009 IOSP Options Common Stock (700) $0.00 Feb. 28, 2016 700 Disposed
Aug. 29, 2008 IOSP Options Common Stock (2,260) $9.88 May 18, 2015 2,260 Disposed
May 8, 2008 IOSP Options Common Stock (1,330) $7.91 Oct. 31, 2008 1,330 Disposed
May 8, 2008 IOSP Options Common Stock (1,330) $7.91 Oct. 31, 2008 1,330 Disposed
May 8, 2008 IOSP Options Common Stock (1,330) $4.27 Oct. 31, 2008 1,330 Disposed
May 8, 2008 IOSP Options Common Stock (1,330) $4.27 Oct. 31, 2008 1,330 Disposed
March 11, 2008 IOSP Options Common Stock (6,800) $0.00 Feb. 18, 2015 6,800 Disposed
March 6, 2008 IOSP Options Common Stock (612) $0.00 March 4, 2015 612 Disposed
March 1, 2008 IOSP Options Common Stock (1,200) $0.00 March 1, 2018 1,200 Acquired
Feb. 20, 2008 IOSP Options Common Stock (8,049) $0.00 Feb. 20, 2018 8,049 Disposed
Feb. 20, 2008 IOSP Options Common Stock (1,659) $20.23 Feb. 20, 2018 1,659 Disposed
Feb. 20, 2008 IOSP Options Common Stock (1,268) $20.23 Feb. 20, 2018 1,268 Disposed
May 30, 2007 IOSP Options Common Stock (1,000) $23.00 May 12, 2014 1,000 Disposed
May 14, 2007 IOSP Options Common Stock (2,750) $0.00 May 12, 2014 2,750 Disposed
May 8, 2007 IOSP Options Common Stock (18,000) $0.00 March 31, 2013 18,000 Disposed
March 12, 2007 IOSP Options Common Stock (100) $0.00 March 12, 2017 100 Acquired

Showing latest 100 of 113 transactions

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. 18, 2003 IOSP OPTIONS→ COMMON STOCK (18,000) 18,000 Direct

Compensation (DEF 14A)

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

IOSP

President, Human Resources
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2008 $237,870 — — — $84,285 $112,433 $57,971 $645,837
2007 $242,607 — — — $224,500 $36,366 $64,322 $655,594
2006 $214,082 — — — $129,478 $42,016 $56,260 $559,481

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