Ticker: ISTR CUSIP: 46134L105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 134,942 | $3,620 | $24.59 | $21.43 - $27.95 |
| Q3 2025 | 128,887 | $3,006 | $22.44 | $19.17 - $23.70 |
| Q2 2025 | 126,919 | $2,466 | $18.45 | $15.39 - $20.38 |
| Q1 2025 | 111,019 | $1,967 | $18.75 | $16.70 - $22.05 |
| Q4 2024 | 109,267 | $2,411 | $21.91 | $18.17 - $24.80 |
| Q3 2024 | 108,540 | $2,117 | $17.59 | $14.91 - $19.96 |
| Q2 2024 | 102,766 | $1,583 | $15.81 | $14.60 - $16.97 |
| Q1 2024 | 29,648 | $488 | $16.49 | $14.82 - $17.99 |
| Q4 2023 | 28,148 | $422 | $11.37 | $9.07 - $15.19 |
| Q3 2023 | 28,148 | $301 | $12.85 | $10.47 - $15.63 |
| Q2 2023 | 28,348 | $346 | $12.26 | $10.71 - $15.63 |
| Q1 2023 | 28,348 | $398 | $19.27 | $13.50 - $22.20 |
| Q4 2022 | 28,348 | $613 | $21.45 | $19.75 - $22.48 |
| Q3 2022 | 28,548 | $571 | $21.80 | $19.90 - $23.72 |
| Q2 2022 | 28,224 | $621 | $20.48 | $18.62 - $23.23 |
| Q1 2022 | 28,224 | $541 | $19.36 | $18.07 - $20.45 |
| Q4 2021 | 26,568 | $491 | $18.74 | $17.07 - $22.47 |
| Q3 2021 | 26,148 | $578 | $22.22 | $21.08 - $23.51 |
| Q2 2021 | 22,048 | $506 | $22.09 | $20.30 - $23.69 |
| Q1 2021 | 146,382 | $3,018 | $18.78 | $15.66 - $23.45 |
| Q4 2020 | 177,163 | $2,942 | $15.38 | $12.51 - $17.39 |
| Q3 2020 | 191,258 | $2,452 | $13.65 | $12.35 - $15.21 |
| Q2 2020 | 199,586 | $2,894 | $12.74 | $10.00 - $16.57 |
| Q1 2020 | 183,117 | $2,338 | $20.32 | $8.49 - $24.40 |
| Q4 2019 | 184,697 | $4,444 | $24.60 | $23.10 - $26.46 |
| Q3 2019 | 167,636 | $3,990 | $23.51 | $21.48 - $24.50 |
| Q2 2019 | 167,336 | $3,991 | $23.29 | $22.22 - $24.50 |
| Q1 2019 | 166,364 | $3,778 | $23.58 | $21.64 - $25.29 |
| Q4 2018 | 163,992 | $4,075 | $24.99 | $19.49 - $27.84 |
| Q3 2018 | 164,521 | $4,415 | $27.20 | $24.40 - $29.90 |
| Q2 2018 | 169,857 | $4,695 | $26.87 | $24.05 - $28.95 |
| Q1 2018 | 166,961 | $4,318 | $24.78 | $23.10 - $26.55 |
| Q4 2017 | 127,081 | $3,062 | $23.73 | $20.35 - $24.60 |
| Q3 2017 | 118,261 | $2,849 | $22.68 | $20.25 - $24.15 |
| Q2 2017 | 109,559 | $2,510 | $22.44 | $21.27 - $23.75 |