Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 4,176 | $319 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 4,604 | $355 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 18,501 | $1,556 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 30,267 | $2,867 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 31,036 | $3,415 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 35,454 | $4,009 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 34,111 | $4,218 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 30,301 | $3,908 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 37,115 | $4,575 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 23,414 | $2,393 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 9,459 | $950 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 10,441 | $1,072 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 13,900 | $1,430 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 10,884 | $932 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 11,311 | $1,084 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 6,729 | $623 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 138,196 | $12,485 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 141,915 | $11,952 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 147,846 | $13,397 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 152,503 | $15,662 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 164,907 | $14,962 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 164,598 | $10,423 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 142,135 | $10,980 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 12,883 | $896 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 4,533 | $469 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 5,784 | $516 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 6,142 | $560 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 5,762 | $480 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 5,705 | $353 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 6,083 | $466 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 5,713 | $437 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 5,385 | $370 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 6,526 | $461 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 8,666 | $534 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 5,126 | $336 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 5,362 | $347 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 7,119 | $488 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 10,516 | $639 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 14,186 | $653 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 18,756 | $814 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 10,412 | $566 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 14,794 | $687 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 15,353 | $691 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 14,044 | $652 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 21,598 | $923 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 21,440 | $770 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 16,107 | $695 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 19,268 | $871 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 25,317 | $1,171 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 23,309 | $1,087 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 24,009 | $965 | $35.20 | $33.13 - $38.11 |