Ticker: ISTR CUSIP: 46134L105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 295,834 | $7,905 | $24.59 | $21.43 - $27.95 |
| Q3 2025 | 316,212 | $7,339 | $22.44 | $19.17 - $23.70 |
| Q2 2025 | 319,212 | $6,167 | $18.45 | $15.39 - $20.38 |
| Q1 2025 | 212,672 | $3,745 | $18.75 | $16.70 - $22.05 |
| Q4 2024 | 223,172 | $4,901 | $21.91 | $18.17 - $24.80 |
| Q3 2024 | 258,610 | $5,017 | $17.59 | $14.91 - $19.96 |
| Q2 2024 | 258,610 | $3,983 | $15.81 | $14.60 - $16.97 |
| Q1 2024 | 258,610 | $4,231 | $16.49 | $14.82 - $17.99 |
| Q4 2023 | 264,310 | $3,941 | $11.37 | $9.07 - $15.19 |
| Q3 2023 | 264,310 | $2,799 | $12.85 | $10.47 - $15.63 |
| Q2 2023 | 264,310 | $3,201 | $12.26 | $10.71 - $15.63 |
| Q1 2023 | 270,610 | $3,778 | $19.27 | $13.50 - $22.20 |
| Q4 2022 | 257,310 | $5,540 | $21.45 | $19.75 - $22.48 |
| Q3 2022 | 257,310 | $5,120 | $21.80 | $19.90 - $23.72 |
| Q2 2022 | 260,310 | $5,701 | $20.48 | $18.62 - $23.23 |
| Q1 2022 | 262,310 | $5,007 | $19.36 | $18.07 - $20.45 |
| Q4 2021 | 266,910 | $4,914 | $18.74 | $17.07 - $22.47 |
| Q3 2021 | 246,700 | $5,432 | $22.22 | $21.08 - $23.51 |
| Q2 2021 | 246,700 | $5,647 | $22.09 | $20.30 - $23.69 |
| Q1 2021 | 246,700 | $5,070 | $18.78 | $15.66 - $23.45 |
| Q4 2020 | 191,800 | $3,172 | $15.38 | $12.51 - $17.39 |
| Q3 2020 | 242,400 | $3,108 | $13.65 | $12.35 - $15.21 |
| Q2 2020 | 242,400 | $3,515 | $12.74 | $10.00 - $16.57 |
| Q1 2020 | 204,300 | $2,609 | $20.32 | $8.49 - $24.40 |
| Q4 2019 | 181,700 | $4,361 | $24.60 | $23.10 - $26.46 |
| Q3 2019 | 175,200 | $4,170 | $23.51 | $21.48 - $24.50 |
| Q2 2019 | 169,900 | $4,052 | $23.29 | $22.22 - $24.50 |
| Q1 2019 | 169,900 | $3,858 | $23.58 | $21.64 - $25.29 |
| Q4 2018 | 169,900 | $4,214 | $24.99 | $19.49 - $27.84 |
| Q3 2018 | 127,000 | $3,410 | $27.20 | $24.40 - $29.90 |
| Q2 2018 | 98,800 | $2,732 | $26.87 | $24.05 - $28.95 |