Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 949,038 | $72,639 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 929,123 | $71,691 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 970,225 | $81,586 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 1,011,441 | $95,834 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 1,035,554 | $113,973 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 996,281 | $112,669 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 975,537 | $120,567 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 975,263 | $125,750 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 959,907 | $118,299 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 908,562 | $92,855 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 884,515 | $88,841 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 863,145 | $88,619 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 836,979 | $86,092 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 910,972 | $78,043 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 911,808 | $87,342 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 894,973 | $82,830 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 859,151 | $77,616 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 808,422 | $68,085 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 807,746 | $73,190 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 793,535 | $81,488 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 773,932 | $70,219 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 752,012 | $47,617 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 777,530 | $60,064 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 756,281 | $52,554 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 710,896 | $73,535 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 709,972 | $63,287 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 773,539 | $70,578 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 758,891 | $63,254 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 741,549 | $45,798 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 760,193 | $58,346 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 712,346 | $54,533 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 616,476 | $42,294 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 705,414 | $49,798 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 593,689 | $36,601 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 594,325 | $38,960 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 569,505 | $36,873 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 526,674 | $36,077 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 496,970 | $30,215 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 483,154 | $22,221 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 483,186 | $20,947 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 464,923 | $25,250 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 443,950 | $20,649 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 406,023 | $18,294 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 407,032 | $18,883 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 405,087 | $17,299 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 408,755 | $14,672 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 419,409 | $18,104 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 461,400 | $20,873 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 490,337 | $22,666 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 500,492 | $23,356 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 490,726 | $19,710 | $35.20 | $33.13 - $38.11 |