Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 14,005 | $1,072 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 52,033 | $4,015 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 19,985 | $1,681 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 5,429 | $514 | $103.54 | $91.98 - $114.58 |
| Q4 2021 | 15,547 | $1,404,516 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 27,139 | $2,285,647 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 12,124 | $1,098,556 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 6,394 | $656,600 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 10,690 | $969,904 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 11,773 | $745,466 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 7,518 | $580,766 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 15,691 | $1,090,368 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 7,371 | $762,456 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 4,471 | $398,545 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 3,897 | $355,562 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 5,652 | $471,094 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 1,847 | $114,071 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 1,431 | $109,829 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 1,529 | $117,045 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 7,817 | $536,246 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 12,473 | $880,594 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 12,740 | $785,421 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 8,544 | $560,059 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 5,167 | $334,563 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 5,282 | $361,817 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 3,937 | $239,409 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 7,791 | $358,308 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 3,803 | $164,898 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 2,908 | $157,933 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 5,291 | $246,084 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 2,342 | $105,484 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 580 | $26,906 | $37.07 | $33.21 - $40.57 |
| Q3 2014 | 1,496 | $53,706 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 2 | $86 | $36.87 | $34.10 - $39.69 |
| Q4 2013 | 304 | $14,051 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 6,429 | $299,977 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 8,301 | $333,534 | $35.20 | $33.13 - $38.11 |