Frank L. Walker
Insider
First SEC filing: Nov. 1, 2018 · Latest: Nov. 1, 2018
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Jan. 21, 2026 | ISTR | A | 1,431 | · | · | 14,225 Direct | +11.18% | Acquired | (price as of 2026-10-05) |
| July 1, 2025 | ISTR | A | 100 | $1000.00 | $100,000 | 100 Direct | · | Acquired | -97.1% (price as of 2026-10-05) |
| Jan. 15, 2025 | ISTR | A | 1,750 | · | · | 12,794 Direct | +15.85% | Acquired | (price as of 2026-10-05) |
| Jan. 17, 2024 | ISTR | A | 1,798 | · | · | 11,044 Direct | +19.45% | Acquired | (price as of 2026-10-05) |
| Jan. 18, 2023 | ISTR | A | 1,279 | · | · | 9,246 Direct | +16.05% | Acquired | (price as of 2026-10-05) |
| Jan. 19, 2022 | ISTR | A | 1,494 | · | · | 7,967 Direct | +23.08% | Acquired | (price as of 2026-10-05) |
| Jan. 20, 2021 | ISTR | A | 1,691 | · | · | 31,193 Direct | +5.73% | Acquired | (price as of 2026-10-05) |
| Jan. 31, 2020 | ISTR | P | 450 | $22.25 | $10,012 | 1,305 Indirect | +52.63% | Acquired | 32.0% (price as of 2026-10-05) |
| Jan. 22, 2020 | ISTR | A | 624 | · | · | 29,502 Direct | +2.16% | Acquired | (price as of 2026-10-05) |
| Jan. 1, 2019 | ISTR | A | 565 | · | · | 28,878 Direct | +2.00% | Acquired | (price as of 2026-10-05) |
| Oct. 30, 2018 | ISTR | P | 49 | $25.00 | $1,225 | 654 Indirect | +8.10% | Acquired | 17.4% (price as of 2026-10-05) |
| Oct. 30, 2018 | ISTR | P | 201 | $25.50 | $5,126 | 855 Indirect | +30.73% | Acquired | 15.1% (price as of 2026-10-05) |
| Jan. 24, 2018 | ISTR | A | 816 | · | · | 28,918 Direct | +2.90% | Acquired | (price as of 2026-10-05) |
| Jan. 20, 2017 | ISTR | A | 618 | · | · | 28,102 Direct | +2.25% | Acquired | (price as of 2026-10-05) |
| Jan. 1, 2016 | ISTR | A | 401 | · | · | 27,484 Direct | +1.48% | Acquired | (price as of 2026-10-05) |
| Feb. 18, 2015 | ISTR | A | 454 | · | · | 27,083 Direct | +1.70% | Acquired | (price as of 2026-10-05) |
| Feb. 18, 2015 | ISTR | P | 454 | $14.33 | $6,506 | 27,083 Direct | +1.70% | Acquired | 104.9% (price as of 2026-10-05) |
| June 30, 2014 | ISTR | P | 1,000 | $14.00 | $14,000 | 1,909 Direct | +110.01% | Acquired | 109.7% (price as of 2026-10-05) |
| June 30, 2014 | ISTR | P | 25,720 | $14.00 | $360,080 | 26,629 Direct | +2829.48% | Acquired | 109.7% (price as of 2026-10-05) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| July 1, 2025 | ISTR | Series A Noncumulative Perpetual Convertible Preferred Stock | Common Stock | · | · | 100 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 4 holdings
Securities held when first becoming an insider, per SEC Form 3.