Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 85,714 | $6,561 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 96,866 | $7,474 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 84,959 | $7,144 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 79,121 | $7,497 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 62,128 | $6,838 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 52,957 | $5,989 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 54,857 | $6,780 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 50,972 | $6,572 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 51,602 | $6,359 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 30,734 | $3,141 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 44,143 | $4,434 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 43,556 | $4,472 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 45,055 | $4,634 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 45,443 | $4 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 46,002 | $4,407 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 46,002 | $4,257 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 50,202 | $4,535 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 49,792 | $4,193 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 50,292 | $4,557 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 50,682 | $5,205 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 54,372 | $4,933 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 54,372 | $3,443 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 54,842 | $4,237 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 54,842 | $3,811 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 54,842 | $5,673 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 62,176 | $5,542 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 54,036 | $4,930 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 22,436 | $1,870 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 21,436 | $1,324 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 17,136 | $1,315 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 15,739 | $1,205 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 15,739 | $1,080 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 15,239 | $1,076 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 15,239 | $939 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 12,400 | $813 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 17,400 | $1,127 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 16,700 | $1,144 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 16,700 | $1,016 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 16,700 | $768 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 16,700 | $724 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 16,700 | $907 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 26,600 | $1,237 | $39.87 | $35.73 - $44.30 |