Ticker: ISTR CUSIP: 46134L105 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 25,950 | $693 | $24.59 | $21.43 - $27.95 |
| Q3 2025 | 25,950 | $602 | $22.44 | $19.17 - $23.70 |
| Q2 2025 | 27,476 | $531 | $18.45 | $15.39 - $20.38 |
| Q1 2025 | 25,778 | $454 | $18.75 | $16.70 - $22.05 |
| Q4 2024 | 25,778 | $566 | $21.91 | $18.17 - $24.80 |
| Q3 2024 | 26,778 | $519 | $17.59 | $14.91 - $19.96 |
| Q2 2024 | 25,072 | $386 | $15.81 | $14.60 - $16.97 |
| Q1 2021 | 23,047 | $474 | $18.78 | $15.66 - $23.45 |
| Q4 2020 | 22,941 | $380 | $15.38 | $12.51 - $17.39 |
| Q3 2020 | 23,029 | $296 | $13.65 | $12.35 - $15.21 |
| Q2 2020 | 24,446 | $355 | $12.74 | $10.00 - $16.57 |
| Q1 2020 | 22,196 | $284 | $20.32 | $8.49 - $24.40 |
| Q4 2019 | 22,196 | $533 | $24.60 | $23.10 - $26.46 |
| Q3 2019 | 22,196 | $529 | $23.51 | $21.48 - $24.50 |
| Q2 2019 | 22,196 | $530 | $23.29 | $22.22 - $24.50 |
| Q1 2019 | 21,153 | $481 | $23.58 | $21.64 - $25.29 |
| Q4 2018 | 21,359 | $530 | $24.99 | $19.49 - $27.84 |
| Q3 2018 | 19,426 | $522 | $27.20 | $24.40 - $29.90 |
| Q2 2018 | 19,426 | $538 | $26.87 | $24.05 - $28.95 |
| Q1 2018 | 13,900 | $360 | $24.78 | $23.10 - $26.55 |
| Q4 2017 | 13,900 | $335 | $23.73 | $20.35 - $24.60 |
| Q3 2017 | 13,900 | $335 | $22.68 | $20.25 - $24.15 |
| Q2 2017 | 13,900 | $319 | $22.44 | $21.27 - $23.75 |