Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 70,197 | $5,373 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 72,488 | $5,593 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 81,481 | $6,852 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 77,760 | $7,368 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 71,158 | $7,832 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 71,189 | $8,051 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 73,873 | $9,130 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 74,126 | $9,558 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 75,386 | $9,291 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 74,812 | $7,646 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 76,054 | $7,639 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 76,536 | $8 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 71,480 | $7 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 74,458 | $6,379 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 70,837 | $6,785 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 70,547 | $6,529 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 69,296 | $6,260 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 67,948 | $5,723 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 77,477 | $7,020 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 75,286 | $7,731 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 74,167 | $6,729 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 71,929 | $4,555 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 76,011 | $5,872 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 82,054 | $5,702 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 79,931 | $8,268 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 75,511 | $6,731 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 73,451 | $6,702 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 74,319 | $6,194 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 73,358 | $4,531 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 60,311 | $4,629 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 60,522 | $4,633 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 59,547 | $4,085 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 58,625 | $4,139 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 50,961 | $3,142 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 50,121 | $3,285 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 49,943 | $3,234 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 36,044 | $2,469 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 37,331 | $2,270 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 35,646 | $1,639 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 42,607 | $1,847 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 38,992 | $2,118 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 37,577 | $1,748 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 32,710 | $1,473 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 32,415 | $1,504 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 31,315 | $1,337 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 29,520 | $1,060 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 29,300 | $1,265 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 22,941 | $1,038 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 23,791 | $1,100 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 24,391 | $1,138 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 25,737 | $1,034 | $35.20 | $33.13 - $38.11 |