Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 36,921 | $2,826 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 1,006 | $78 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 1,987 | $167 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 1,317 | $125 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 2,051 | $226 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 4,388 | $496 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 33,275 | $4,112 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 31,003 | $3,997 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 29,782 | $3,670 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 29,963 | $3,062 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 25,640 | $2,575 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 13,742 | $1,411 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 13,697 | $1,409 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 13,614 | $1,166 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 13,592 | $1,302 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 13,643 | $1,262 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 87,556 | $7,909 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 719,089 | $60,562 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 1,667,698 | $151,111 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 2,121,760 | $217,884 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 2,654,447 | $240,838 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 2,805,102 | $177,619 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 3,135,702 | $242,233 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 3,459,165 | $240,378 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 2,870,164 | $296,890 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 2,576,544 | $229,672 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 2,877,426 | $262,536 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 3,413,874 | $284,547 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 3,659,994 | $226,042 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 3,445,832 | $264,467 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 3,570,805 | $273,345 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 3,171,317 | $217,552 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 2,673,832 | $188,772 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 2,501,907 | $154,242 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 2,612,586 | $171,256 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 2,596,233 | $168,107 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 2,739,249 | $187,639 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 2,382,769 | $144,896 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 2,226,816 | $102,411 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 2,334,404 | $101,220 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 2,246,516 | $122,008 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 1,577,096 | $73,351 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 1,346,196 | $60,633 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 1,530,496 | $71,000 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 1,527,996 | $65,245 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 2,661,479 | $95,548 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 2,919,967 | $126,055 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 2,854,420 | $129,106 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 2,733,978 | $126,365 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 2,963,872 | $138,294 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 3,155,928 | $126,805 | $35.20 | $33.13 - $38.11 |