Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 17,026 | $1 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 17,915 | $1 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 35,757 | $3 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 36,499 | $3 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 37,458 | $4 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 59,602 | $7 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 59,407 | $7 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 64,622 | $8 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 65,208 | $8 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 68,341 | $7 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 69,384 | $7 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 71,770 | $7 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 76,198 | $8 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 94,856 | $8,126 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 97,687 | $9,358 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 111,699 | $10,338 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 111,693 | $10,091 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 128,904 | $10,856 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 278,530 | $25,238 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 276,299 | $28,373 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 291,079 | $26,409 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 151,708 | $9,606 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 166,442 | $12,857 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 166,414 | $11,564 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 205,754 | $21,284 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 173,508 | $15,466 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 174,929 | $15,961 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 174,507 | $14,546 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 175,571 | $10,843 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 171,480 | $13,161 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 173,029 | $13,246 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 172,709 | $11,848 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 195,735 | $13,819 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 210,337 | $12,967 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 149,888 | $9,825 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 146,858 | $9,509 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 70,178 | $4,807 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 69,498 | $4,226 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 75,578 | $3,476 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 100,458 | $4,356 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 123,188 | $6,690 | $48.12 | $40.31 - $52.05 |