Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 78,672 | $6,022 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 77,358 | $5,969 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 125,164 | $10,525 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 101,773 | $9,643 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 89,018 | $9,797 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 76,193 | $8,617 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 79,213 | $9,790 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 35,142 | $4,531 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 37,401 | $4,609 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 35,544 | $3,633 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 35,251 | $3,619 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 35,251 | $3,619 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 33,573 | $3,453 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 32,813 | $2,811,090 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 36,906 | $3,535,226 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 37,632 | $3,482,842 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 34,236 | $3,092,881 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 34,138 | $2,875,103 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 33,496 | $3,035,072 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 30,646 | $3,147,038 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 31,124 | $2,823,881 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 31,659 | $2,004,649 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 26,708 | $2,063,194 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 26,972 | $1,874,284 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 29,714 | $3,073,616 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 29,147 | $2,598,164 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 25,802 | $2,354,174 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 23,110 | $1,926,219 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 21,758 | $1,343,774 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 19,677 | $1,510,209 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 19,677 | $1,506,273 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 16,277 | $1,116,602 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 15,517 | $1,095,500 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 15,517 | $956,622 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 14,560 | $954,407 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 14,097 | $912,780 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 11,006 | $754 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 17,709 | $1,077 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 70,532 | $3,244 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 12,902 | $559 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 11,799 | $641 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 13,099 | $609 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 13,099 | $590 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 11,099 | $515 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 10,699 | $457 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 9,599 | $345 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 9,599 | $414 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 9,599 | $434 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 6,799 | $314 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 7,099 | $331 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 7,099 | $285 | $35.20 | $33.13 - $38.11 |