Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 11,236 | $860 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 11,838 | $913 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 12,095 | $1,017 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 8,429 | $799 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 8,637 | $951 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 8,894 | $1,006 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 9,192 | $1,136 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 10,384 | $1,339 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 11,466 | $1,413 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 11,600 | $1,186 | $100.32 | $93.27 - $107.44 |
| Q4 2022 | 14,670 | $2 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 18,962 | $1,790 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 21,127 | $2,052 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 21,479 | $2,058 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 21,262 | $2,003 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 22,342 | $1,977 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 23,041 | $2,081 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 24,824 | $2,425 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 25,810 | $2,493 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 25,704 | $1,761 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 25,942 | $2,051 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 23,810 | $1,646 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 23,055 | $2,410 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 22,921 | $2,074 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 22,980 | $2,117 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 24,115 | $2,050 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 23,744 | $1,632 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 23,637 | $1,598 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 25,773 | $2,131 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 25,595 | $1,862 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 24,804 | $1,800 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 25,474 | $1,553 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 25,319 | $1,631 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 26,662 | $1,774 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 25,523 | $1,724 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 24,151 | $1,496 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 23,946 | $1,410 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 24,382 | $1,111 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 24,405 | $1,230 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 24,455 | $1,137 | $39.87 | $35.73 - $44.30 |
| Q2 2014 | 10,512 | $454 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 13,291 | $601 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 23,082 | $1,067 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 27,258 | $1,272 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 42,176 | $1,695 | $35.20 | $33.13 - $38.11 |