Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 309,927 | $23,722 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 273,905 | $21,135 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 171,738 | $14,441 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 99,076 | $9,387 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 38,032 | $4,186 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 13,169 | $1,489 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 7,223 | $893 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 7,977 | $1,029 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 10,008 | $1,233 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 19,030 | $1,945 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 22,331 | $2,243 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 15,694 | $1,611 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 17,984 | $1,850 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 14,171 | $1,214 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 6,948 | $666 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 30,001 | $2,777 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 61,972 | $5,599 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 70,057 | $5,900 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 33,279 | $3,015 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 6,547 | $672 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 18,103 | $1,642 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 32,712 | $2,072 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 17,516 | $1,353 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 17,697 | $1,230 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 19,410 | $2,008 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 27,150 | $2,420 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 20,594 | $1,879 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 21,418 | $1,785 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 29,869 | $1,845 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 21,596 | $1,657 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 22,461 | $1,719 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 27,474 | $1,885 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 45,225 | $3,193 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 45,174 | $2,785 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 26,485 | $1,736 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 30,311 | $1,963 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 36,522 | $2,502 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 45,994 | $2,797 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 63,324 | $2,912 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 72,468 | $3,142 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 84,643 | $4,597 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 125,856 | $5,854 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 230,901 | $10,400 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 239,098 | $11,092 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 219,128 | $9,357 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 217,080 | $7,793 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 224,646 | $9,698 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 287,764 | $13,016 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 376,530 | $17,403 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 426,951 | $19,922 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 421,621 | $16,941 | $35.20 | $33.13 - $38.11 |