Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 21,279 | $2 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 29,631 | $2 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 29,268 | $2 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 28,975 | $3 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 31,206 | $3 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 33,271 | $4 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 34,322 | $4 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 29,888 | $4 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 28,024 | $3 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 27,590 | $3 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 27,429 | $3 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 28,755 | $3 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 30,268 | $3 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 30,244 | $2,591 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 24,549 | $2,351 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 21,426 | $2,032 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 21,419 | $1,934 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 21,393 | $1,809 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 20,945 | $1,898 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 21,177 | $2,173 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 24,058 | $2,183 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 27,499 | $1,741 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 30,574 | $2,358 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 32,357 | $2,240 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 30,040 | $3,084 | $87.47 | $77.84 - $97.70 |
| Q2 2019 | 33,841 | $3,082 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 32,809 | $2,732 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 31,977 | $1,823 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 30,830 | $2,366 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 32,140 | $2,461 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 32,132 | $2,205 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 30,823 | $2,176 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 32,777 | $2,009 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 35,015 | $2,293 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 33,995 | $2,199 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 31,642 | $2,169 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 32,215 | $1,957 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 31,792 | $1,463 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 2,568 | $111 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 2,568 | $139 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 2,568 | $120 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 2,568 | $115 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 2,568 | $119 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 1,058 | $45 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 1,058 | $38 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 1,058 | $45 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 1,058 | $47 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 1,058 | $49 | $38.90 | $36.04 - $42.14 |