Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 60,287 | $4,614 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 60,015 | $4,631 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 85,277 | $7,171 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 66,087 | $6,262 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 69,578 | $7,658 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 68,800 | $7,781 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 78,071 | $9,649 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 82,367 | $10,620 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 87,138 | $10,739 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 89,526 | $9,150 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 88,642 | $8,903 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 93,421 | $9,592 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 97,644 | $10,044 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 107,992 | $9,251 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 110,679 | $10,602 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 110,747 | $10,249 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 111,110 | $10,037 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 105,921 | $8,920 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 108,645 | $9,845 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 110,121 | $11,307 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 105,477 | $9,570 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 130,192 | $8,246 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 149,443 | $11,543 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 158,389 | $11,005 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 154,907 | $16,025 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 177,107 | $15,788 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 191,883 | $17,507 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 206,638 | $17,223 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 200,942 | $12,410 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 174,877 | $13,422 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 143,553 | $10,989 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 151,429 | $10,388 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 210,195 | $14,841 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 221,658 | $13,664 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 227,358 | $14,905 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 290,520 | $18,810 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 306,996 | $21,031 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 322,578 | $19,617 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 322,157 | $14,815 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 368,364 | $15,974 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 423,122 | $22,982 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 499,996 | $23,256 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 265,911 | $11,978 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 209,875 | $9,736 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 150,485 | $6,426 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 108,400 | $3,891 | $34.84 | $30.82 - $37.97 |
| Q4 2013 | 11,970 | $554 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 14,995 | $700 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 15,965 | $642 | $35.20 | $33.13 - $38.11 |