Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 4,966 | $380 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 4,967 | $383 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 4,966 | $418 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 5,216 | $494 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 5,216 | $574 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 5,216 | $590 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 5,216 | $645 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 5,216 | $673 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 5,216 | $643 | $102.52 | $91.88 - $121.65 |
| Q2 2023 | 5,216 | $524 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 5,216 | $536 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 5,216 | $537 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 5,218 | $447 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 5,218 | $500 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 5,186 | $480 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 5,186 | $477 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 5,150 | $434 | $83.46 | $75.85 - $90.38 |
| Q3 2020 | 5,091 | $348 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 5,091 | $378 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 5,058 | $362 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 5,058 | $527 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 5,031 | $438 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 5,031 | $459 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 5,000 | $417 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 7,648 | $472 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 7,603 | $509 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 7,603 | $582 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 10,060 | $718 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 10,060 | $710 | $59.54 | $53.90 - $66.58 |