Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 950,074 | $72,719 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 835,895 | $64,498 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 958,486 | $80,599 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 1,106,482 | $104,839 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 922,220 | $101,500 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 908,032 | $102,689 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 866,583 | $107,101 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 978,587 | $126,179 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 1,023,632 | $126,152 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 1,138,421 | $116,347 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 1,138,570 | $114,358 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 1,075,121 | $110,383 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 1,022,850 | $105,210 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 973,752 | $83,421 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 935,356 | $89,598 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 804,981 | $74,530 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 519,674 | $46,948 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 6,811 | $574 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 6,122 | $555 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 5,966 | $613 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 5,664 | $514 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 5,206 | $330 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 9,935 | $767 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 13,619 | $946 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 13,152 | $1,360 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 8,166 | $728 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 1,532 | $140 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 4,195 | $350 | $67.58 | $51.63 - $78.46 |
| Q4 2017 | 3,974 | $281 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 3,629 | $224 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 2,720 | $178 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 2,311 | $150 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 1,957 | $134 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 2,005 | $122 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 2,130 | $98 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 1,203 | $52 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 2,131 | $116 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 2,202 | $102 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 2,051 | $92 | $38.87 | $36.94 - $40.69 |