Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 268,151 | $20,524 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 181,209 | $13,982 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 72,024 | $6,057 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 14,318 | $1,357 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 15,883 | $1,748 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 22,252 | $2,516 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 24,232 | $2,995 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 15,956 | $2,057 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 18,444 | $2,273 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 19,814 | $2,025 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 17,669 | $1,775 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 14,443 | $1,483 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 13,775 | $1,417 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 13,626 | $1,167 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 10,706 | $1,026 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 14,487 | $1,341 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 22,023 | $1,990 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 10,770 | $907 | $83.46 | $75.85 - $90.38 |
| Q4 2020 | 2,660 | $241 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 4,400 | $279 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 9,408 | $727 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 10,889 | $757 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 11,348 | $1,174 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 8,079 | $720 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 3,892 | $355 | $76.63 | $71.16 - $83.47 |
| Q4 2018 | 9,478 | $585 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 20,812 | $1,597 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 22,735 | $1,740 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 22,765 | $1,562 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 21,413 | $1,512 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 24,392 | $1,504 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 55,426 | $3,633 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 103,447 | $6,699 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 167,099 | $11,446 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 193,720 | $11,780 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 167,864 | $7,720 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 139,257 | $6,038 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 70,147 | $3,810 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 37,858 | $1,761 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 38,347 | $1,727 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 30,028 | $1,393 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 28,852 | $1,232 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 39,803 | $1,429 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 64,303 | $2,776 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 97,862 | $4,426 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 146,562 | $6,774 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 198,671 | $9,270 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 287,612 | $11,556 | $35.20 | $33.13 - $38.11 |
| Q4 2012 | 223,903 | $7,722 | — | — |