Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 120,300 | $9,208 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 146,500 | $11,304 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 146,600 | $12,328 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 126,900 | $12,024 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 4,800 | $528 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 5,200 | $588 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 9,200 | $1,137 | $121.30 | $115.10 - $129.23 |
| Q4 2023 | 2,600 | $0 | $102.52 | $91.88 - $121.65 |
| Q2 2023 | 30,800 | $3 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 34,362 | $4 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 18,000 | $2 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 30,900 | $2,647 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 26,500 | $2,538 | $91.85 | $81.71 - $101.29 |
| Q3 2021 | 22,300 | $1,878 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 41,000 | $3,715 | $92.53 | $83.80 - $100.29 |
| Q3 2020 | 62,000 | $3,926 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 4,200 | $324 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 16,300 | $1,133 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 17,000 | $1,758 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 27,800 | $2,478 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 4,200 | $383 | $76.63 | $71.16 - $83.47 |
| Q4 2018 | 31,100 | $1,921 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 5,900 | $453 | $70.20 | $64.67 - $74.99 |
| Q3 2017 | 73,000 | $4,500 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 94,000 | $6,162 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 248,100 | $16,064 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 96,400 | $6,603 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 140,800 | $8,562 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 159,100 | $7,317 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 278,400 | $12,071 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 187,395 | $10,177 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 106,400 | $4,949 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 254,358 | $11,456 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 92,900 | $4,310 | $37.07 | $33.21 - $40.57 |
| Q3 2014 | 13,400 | $481 | $34.84 | $30.82 - $37.97 |
| Q1 2014 | 12,706 | $575 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 61,100 | $2,824 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 118,380 | $5,524 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 124,600 | $5,006 | $35.20 | $33.13 - $38.11 |