Ticker: IOSP CUSIP: 45768S105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 100,574 | $7,698 | $75.03 | $70.10 - $79.81 |
| Q4 2019 | 46,457 | $4,806 | $87.47 | $77.84 - $97.70 |
| Q3 2019 | 114,551 | $10,211 | $81.78 | $74.31 - $88.66 |
| Q2 2019 | 132,640 | $12,102 | $76.63 | $71.16 - $83.47 |
| Q1 2019 | 154,654 | $12,890 | $67.58 | $51.63 - $78.46 |
| Q4 2018 | 158,919 | $9,815 | $62.18 | $48.12 - $70.66 |
| Q3 2018 | 160,509 | $12,319 | $70.20 | $64.67 - $74.99 |
| Q2 2018 | 161,253 | $12,344 | $67.39 | $59.37 - $73.05 |
| Q1 2018 | 166,706 | $11,436 | $62.31 | $55.67 - $66.49 |
| Q4 2017 | 172,801 | $12,200 | $59.54 | $53.90 - $66.58 |
| Q3 2017 | 177,034 | $10,914 | $53.37 | $48.20 - $59.20 |
| Q2 2017 | 182,454 | $11,960 | $57.04 | $53.20 - $62.50 |
| Q1 2017 | 188,914 | $12,232 | $59.26 | $51.41 - $66.19 |
| Q4 2016 | 190,229 | $13,031 | $56.82 | $47.94 - $64.99 |
| Q3 2016 | 196,280 | $11,936 | $48.99 | $39.67 - $53.81 |
| Q2 2016 | 198,420 | $9,125 | $41.52 | $37.19 - $44.47 |
| Q1 2016 | 201,795 | $8,750 | $40.40 | $36.39 - $46.84 |
| Q4 2015 | 257,808 | $14,002 | $48.12 | $40.31 - $52.05 |
| Q3 2015 | 284,798 | $13,246 | $39.87 | $35.73 - $44.30 |
| Q2 2015 | 322,983 | $14,547 | $38.87 | $36.94 - $40.69 |
| Q1 2015 | 380,395 | $17,647 | $37.07 | $33.21 - $40.57 |
| Q4 2014 | 412,828 | $17,628 | $35.30 | $30.04 - $40.52 |
| Q3 2014 | 419,766 | $15,070 | $34.84 | $30.82 - $37.97 |
| Q2 2014 | 446,801 | $19,288 | $36.87 | $34.10 - $39.69 |
| Q1 2014 | 451,101 | $20,403 | $37.58 | $34.73 - $40.51 |
| Q4 2013 | 452,626 | $20,920 | $38.90 | $36.04 - $42.14 |
| Q3 2013 | 455,663 | $21,261 | $36.35 | $33.62 - $39.43 |
| Q2 2013 | 454,570 | $18,265 | $35.20 | $33.13 - $38.11 |