Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 100 | $8 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 100 | $8 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 7,400 | $622 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 8,400 | $796 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 8,400 | $925 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 8,400 | $950 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 8,400 | $1,038 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 8,200 | $1 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 9,500 | $1 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 9,900 | $1 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 10,300 | $1 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 9,800 | $1 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 10,000 | $1 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 11,300 | $968 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 11,300 | $1,082 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 10,600 | $981 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 10,600 | $957 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 13,500 | $1,136 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 13,200 | $1,196 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 12,900 | $1,324 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 8,000 | $725 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 8,000 | $506 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 8,000 | $618 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 11,200 | $778 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 11,800 | $1,220 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 12,200 | $1,087 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 12,700 | $1,158 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 12,500 | $1,041 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 8,800 | $543 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 8,800 | $675 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 8,800 | $673 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 8,000 | $548 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 8,000 | $564 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 8,000 | $493 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 13,600 | $891 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 12,800 | $828 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 6,900 | $472 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 16,800 | $1,021 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 19,400 | $892 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 19,900 | $862 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 17,900 | $972 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 19,600 | $911 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 21,500 | $968 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 21,500 | $997 | $37.07 | $33.21 - $40.57 |
| Q1 2014 | 2,000 | $90 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 9,600 | $444 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 26,100 | $1,218 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 27,000 | $1,085 | $35.20 | $33.13 - $38.11 |