Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 45,848 | $3,509 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 44,559 | $5,039 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 51,510 | $4,331 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 36,487 | $3,457 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 45,660 | $5,025 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 44,559 | $5 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 9,748 | $1,205 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 22,575 | $2,911 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 39,225 | $4,834 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 12,500 | $1,278 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 13,359 | $1 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 12,600 | $1 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 11,977 | $1 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 6,578 | $563 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 10,884 | $1,043 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 25,138 | $2,326 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 44,888 | $4,056 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 35,686 | $3,007 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 18,761 | $1,700 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 31,024 | $3,185 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 28,278 | $2,565 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 38,699 | $2,451 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 30,035 | $2,321 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 24,107 | $1,676 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 39,220 | $4,057 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 32,038 | $2,855 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 29,225 | $2,666 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 18,497 | $1,543 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 17,869 | $1,103 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 27,831 | $2,135 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 11,299 | $865 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 8,572 | $588 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 7,205 | $508 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 7,216 | $445 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 5,470 | $358 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 5,274 | $341 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 1,922 | $132 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 2,191 | $133 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 2,500 | $115 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 8,570 | $368 | $40.40 | $36.39 - $46.84 |
| Q3 2015 | 126 | $6 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 1,265 | $57 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 2,133 | $97 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 5,989 | $251 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 8,557 | $299 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 16,632 | $715 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 25,993 | $1,169 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 28,825 | $1,326 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 26,217 | $1,206 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 18,855 | $758 | $35.20 | $33.13 - $38.11 |