Ticker: ISTR CUSIP: 46134L105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 454,585 | $12,147 | $24.59 | $21.43 - $27.95 |
| Q3 2025 | 431,281 | $10,010 | $22.44 | $19.17 - $23.70 |
| Q2 2025 | 414,266 | $8,004 | $18.45 | $15.39 - $20.38 |
| Q1 2025 | 382,077 | $6,728 | $18.75 | $16.70 - $22.05 |
| Q4 2024 | 345,814 | $7,594 | $21.91 | $18.17 - $24.80 |
| Q3 2024 | 346,941 | $6,731 | $17.59 | $14.91 - $19.96 |
| Q2 2024 | 361,631 | $5,569 | $15.81 | $14.60 - $16.97 |
| Q1 2024 | 384,661 | $6,293 | $16.49 | $14.82 - $17.99 |
| Q4 2023 | 232,236 | $3,463 | $11.37 | $9.07 - $15.19 |
| Q3 2023 | 165,253 | $1,750 | $12.85 | $10.47 - $15.63 |
| Q2 2023 | 154,753 | $1,874 | $12.26 | $10.71 - $15.63 |
| Q1 2023 | 138,753 | $1,937 | $19.27 | $13.50 - $22.20 |
| Q4 2022 | 99,003 | $2,132 | $21.45 | $19.75 - $22.48 |
| Q3 2022 | 101,937 | $2,029 | $21.80 | $19.90 - $23.72 |
| Q2 2022 | 105,003 | $2,300 | $20.48 | $18.62 - $23.23 |
| Q1 2022 | 104,895 | $2,002 | $19.36 | $18.07 - $20.45 |
| Q4 2021 | 104,895 | $1,931 | $18.74 | $17.07 - $22.47 |
| Q3 2021 | 71,772 | $1,580 | $22.22 | $21.08 - $23.51 |
| Q2 2021 | 84,772 | $1,940 | $22.09 | $20.30 - $23.69 |
| Q1 2021 | 122,448 | $2,516 | $18.78 | $15.66 - $23.45 |
| Q4 2020 | 165,701 | $2,741 | $15.38 | $12.51 - $17.39 |
| Q3 2020 | 166,201 | $2,131 | $13.65 | $12.35 - $15.21 |
| Q2 2020 | 167,001 | $2,422 | $12.74 | $10.00 - $16.57 |
| Q1 2020 | 156,913 | $2,004 | $20.32 | $8.49 - $24.40 |
| Q1 2018 | 24,561 | $635 | $24.78 | $23.10 - $26.55 |
| Q4 2017 | 36,853 | $888 | $23.73 | $20.35 - $24.60 |
| Q3 2017 | 51,744 | $1,247 | $22.68 | $20.25 - $24.15 |
| Q2 2017 | 64,578 | $1,479 | $22.44 | $21.27 - $23.75 |
| Q1 2017 | 132,271 | $2,897 | $20.29 | $18.31 - $22.50 |
| Q4 2016 | 86,539 | $1,614 | $17.15 | $15.40 - $19.70 |
| Q3 2016 | 88,018 | $1,351 | $15.43 | $15.00 - $16.46 |
| Q2 2016 | 88,018 | $1,354 | $15.36 | $14.61 - $16.48 |
| Q1 2016 | 88,018 | $1,291 | $15.37 | $13.63 - $17.63 |
| Q4 2015 | 89,089 | $1,568 | $16.65 | $15.39 - $18.00 |
| Q3 2015 | 89,604 | $1,388 | $15.58 | $14.95 - $16.52 |
| Q2 2015 | 87,178 | $1,325 | $15.62 | $14.65 - $17.20 |
| Q1 2015 | 85,030 | $1,454 | $14.89 | $13.35 - $17.42 |
| Q4 2014 | 114,860 | $1,591 | $13.63 | $13.00 - $15.00 |
| Q3 2014 | 119,948 | $1,595 | $13.94 | $13.06 - $19.00 |