Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 8,911 | $682 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 8,911 | $688 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 8,911 | $749 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 7,711 | $731 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 7,711 | $849 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 7,711 | $872 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 10,511 | $1,299 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 10,505 | $1,355 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 10,300 | $1,269 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 10,947 | $1,119 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 9,999 | $1,004 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 12,866 | $1,321 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 18,693 | $1,923 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 18,600 | $1,593 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 17,506 | $1,677 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 17,681 | $1,636 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 17,705 | $1,599 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 17,658 | $1,487 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 21,301 | $1,930 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 22,300 | $2,290 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 22,900 | $2,078 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 22,900 | $1,450 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 22,900 | $1,769 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 23,469 | $1,631 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 26,570 | $2,748 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 26,300 | $2,344 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 25,000 | $2,281 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 23,800 | $1,984 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 23,800 | $1,470 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 27,300 | $2,095 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 40,857 | $3,128 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 39,557 | $2,714 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 39,557 | $2,793 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 39,557 | $2,439 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 39,557 | $2,593 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 64,681 | $4,188 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 55,880 | $3,828 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 26,000 | $1,581 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 24,300 | $1,118 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 24,300 | $1,054 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 24,300 | $1,320 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 22,100 | $1,028 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 26,091 | $1,175 | $38.87 | $36.94 - $40.69 |
| Q3 2013 | 18,200 | $849 | $36.35 | $33.62 - $39.43 |