Ticker: ISTR CUSIP: 46134L105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 130,620 | $3,490 | $24.59 | $21.43 - $27.95 |
| Q3 2025 | 125,796 | $2,920 | $22.44 | $19.17 - $23.70 |
| Q2 2025 | 139,156 | $2,688 | $18.45 | $15.39 - $20.38 |
| Q1 2025 | 138,393 | $2,437 | $18.75 | $16.70 - $22.05 |
| Q4 2024 | 145,888 | $3,204 | $21.91 | $18.17 - $24.80 |
| Q3 2024 | 143,789 | $2,790 | $17.59 | $14.91 - $19.96 |
| Q2 2024 | 141,243 | $2,175 | $15.81 | $14.60 - $16.97 |
| Q1 2024 | 137,823 | $2,255 | $16.49 | $14.82 - $17.99 |
| Q4 2023 | 134,498 | $2,005 | $11.37 | $9.07 - $15.19 |
| Q3 2023 | 130,765 | $1,385 | $12.85 | $10.47 - $15.63 |
| Q2 2023 | 128,313 | $1,554 | $12.26 | $10.71 - $15.63 |
| Q1 2023 | 105,900 | $1,478 | $19.27 | $13.50 - $22.20 |
| Q4 2022 | 107,800 | $2,321 | $21.45 | $19.75 - $22.48 |
| Q3 2022 | 107,800 | $2,145 | $21.80 | $19.90 - $23.72 |
| Q2 2022 | 107,800 | $2,361 | $20.48 | $18.62 - $23.23 |
| Q1 2022 | 97,800 | $1,867 | $19.36 | $18.07 - $20.45 |
| Q4 2021 | 112,800 | $2,077 | $18.74 | $17.07 - $22.47 |
| Q3 2021 | 124,500 | $2,741 | $22.22 | $21.08 - $23.51 |
| Q2 2021 | 124,500 | $2,850 | $22.09 | $20.30 - $23.69 |
| Q1 2021 | 135,000 | $2,774 | $18.78 | $15.66 - $23.45 |
| Q4 2020 | 107,300 | $1,775 | $15.38 | $12.51 - $17.39 |
| Q3 2020 | 107,300 | $1,376 | $13.65 | $12.35 - $15.21 |
| Q2 2020 | 56,800 | $824 | $12.74 | $10.00 - $16.57 |
| Q3 2019 | 21,800 | $519 | $23.51 | $21.48 - $24.50 |
| Q2 2019 | 21,800 | $520 | $23.29 | $22.22 - $24.50 |
| Q1 2019 | 18,800 | $427 | $23.58 | $21.64 - $25.29 |
| Q4 2018 | 18,800 | $466 | $24.99 | $19.49 - $27.84 |
| Q3 2018 | 18,800 | $505 | $27.20 | $24.40 - $29.90 |
| Q2 2018 | 47,324 | $1,309 | $26.87 | $24.05 - $28.95 |
| Q1 2018 | 47,324 | $1,223 | $24.78 | $23.10 - $26.55 |
| Q4 2017 | 47,324 | $1,141 | $23.73 | $20.35 - $24.60 |
| Q3 2017 | 47,424 | $1,143 | $22.68 | $20.25 - $24.15 |
| Q2 2017 | 47,424 | $1,086 | $22.44 | $21.27 - $23.75 |