Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 484,968 | $37,119 | $75.03 | $70.10 - $79.81 |
| Q3 2025 | 282,643 | $21,809 | $82.49 | $73.21 - $89.37 |
| Q2 2025 | 104,671 | $8,802 | $86.03 | $78.60 - $94.32 |
| Q1 2025 | 132,399 | $12,545 | $103.54 | $91.98 - $114.58 |
| Q4 2024 | 124,385 | $13,690 | $111.62 | $104.73 - $124.78 |
| Q3 2024 | 148,583 | $16,803 | $113.17 | $101.07 - $129.81 |
| Q2 2024 | 237,164 | $29,311 | $121.30 | $115.10 - $129.23 |
| Q1 2024 | 254,811 | $32,855 | $117.37 | $110.33 - $126.78 |
| Q4 2023 | 248,344 | $30,606 | $102.52 | $91.88 - $121.65 |
| Q3 2023 | 283,931 | $29,018 | $100.32 | $93.27 - $107.44 |
| Q2 2023 | 122,261 | $12,280 | $95.78 | $88.08 - $103.21 |
| Q1 2023 | 141,862 | $14,565 | $102.60 | $90.19 - $110.59 |
| Q4 2022 | 126,284 | $12,990 | $96.50 | $78.79 - $110.27 |
| Q3 2022 | 97,296 | $8 | $89.51 | $80.19 - $98.62 |
| Q2 2022 | 184,208 | $18 | $91.85 | $81.71 - $101.29 |
| Q1 2022 | 307,472 | $28,456 | $89.19 | $83.58 - $94.67 |
| Q4 2021 | 241,504 | $21,817 | $82.93 | $76.29 - $89.94 |
| Q3 2021 | 191,866 | $16,159 | $83.46 | $75.85 - $90.38 |
| Q2 2021 | 111,428 | $10,096 | $92.53 | $83.80 - $100.29 |
| Q1 2021 | 92,645 | $9,514 | $92.10 | $80.91 - $99.72 |
| Q4 2020 | 56,491 | $5,126 | $71.95 | $57.19 - $85.43 |
| Q3 2020 | 95,229 | $6,030 | $68.67 | $56.85 - $78.17 |
| Q2 2020 | 44,809 | $3,461 | $67.35 | $57.02 - $79.77 |
| Q1 2020 | 271,046 | $18,835 | $83.79 | $52.02 - $98.93 |
| Q4 2019 | 250,876 | $25,950 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 327,774 | $29,217 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 148,566 | $13,555 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 165,545 | $13,798 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 138,774 | $8,571 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 158,604 | $12,173 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 163,518 | $12,517 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 194,420 | $13,338 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 87,075 | $6,148 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 98,632 | $6,081 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 24,690 | $1,619 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 36,538 | $2,366 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 59,049 | $4,045 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 96,308 | $5,856 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 39,224 | $1,804 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 33,974 | $1,473 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 45,131 | $2,451 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 25,718 | $1,196 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 27,043 | $1,218 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 26,638 | $1,236 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 9,684 | $414 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 14,787 | $531 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 10,433 | $450 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 24,824 | $1,123 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 35,269 | $1,630 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 35,332 | $1,649 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 13,097 | $526 | $35.20 | $33.13 - $38.11 |
| Q4 2012 | 7,163 | $247 | — | — |
| Q3 2012 | 9,495 | $322 | — | — |
| Q2 2012 | 11,872 | $352 | — | — |
| Q1 2012 | 9,554 | $290 | — | — |