Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 6,885 | $527 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 7,373 | $569 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 7,318 | $615 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 7,143 | $677 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 7,223 | $795 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 7,179 | $812 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 6,962 | $860 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 6,834 | $881 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 6,952 | $857 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 7,081 | $724 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 7,007 | $704 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 7,175 | $737 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 6,995 | $720 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 6,743 | $578 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 6,714 | $643 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 6,663 | $617 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 6,632 | $599 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 6,703 | $565 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 6,687 | $606 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 7,155 | $735 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 7,124 | $646 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 7,411 | $469 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 5,531 | $427 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 5,751 | $400 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 16,335 | $1,690 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 28,758 | $2,563 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 37,974 | $3,465 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 37,693 | $3,142 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 37,613 | $2,323 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 35,419 | $2,718 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 35,532 | $2,720 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 38,368 | $2,632 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 40,568 | $2,864 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 12,500 | $771 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 12,600 | $826 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 12,500 | $809 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 12,300 | $843 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 12,400 | $754 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 12,400 | $570 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 12,300 | $533 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 11,900 | $646 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 11,600 | $540 | $39.87 | $35.73 - $44.30 |