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Miles Harrison
Insider
First SEC filing: June 1, 2026 · Latest: June 1, 2026
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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 28, 2026 | CSTL | A | 11,766 | · | · | 11,766 Direct | · | Acquired | (price as of 2026-10-02) |
| May 22, 2026 | CSTL | M | 13,667 | · | · | 35,631 Direct | +62.22% | Acquired | (price as of 2026-10-02) |
| May 22, 2026 | CSTL | M | 13,667 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 22, 2025 | CSTL | A | 13,667 | · | · | 13,667 Direct | · | Acquired | (price as of 2026-10-02) |
| May 21, 2025 | CSTL | M | 8,673 | · | · | 21,964 Direct | +65.25% | Acquired | (price as of 2026-10-02) |
| May 21, 2025 | CSTL | M | 8,673 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 25, 2024 | CSTL | M | 8,636 | · | · | 13,291 Direct | +185.52% | Acquired | (price as of 2026-10-02) |
| May 25, 2024 | CSTL | M | 8,636 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 23, 2024 | CSTL | A | 8,673 | · | · | 8,673 Direct | · | Acquired | (price as of 2026-10-02) |
| June 2, 2023 | CSTL | M | 3,825 | · | · | 4,655 Direct | +460.84% | Acquired | (price as of 2026-10-02) |
| June 2, 2023 | CSTL | M | 3,825 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 25, 2023 | CSTL | A | 8,636 | · | · | 8,636 Direct | · | Acquired | (price as of 2026-10-02) |
| June 10, 2022 | CSTL | M | 830 | · | · | 830 Direct | · | Acquired | (price as of 2026-10-02) |
| June 10, 2022 | CSTL | M | 830 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| June 2, 2022 | CSTL | A | 7,647 | · | · | 7,647 Direct | · | Acquired | (price as of 2026-10-02) |
| June 2, 2022 | CSTL | A | 3,825 | · | · | 3,825 Direct | · | Acquired | (price as of 2026-10-02) |
| June 10, 2021 | CSTL | A | 3,379 | · | · | 3,379 Direct | · | Acquired | (price as of 2026-10-02) |
| June 10, 2021 | CSTL | A | 830 | · | · | 830 Direct | · | Acquired | (price as of 2026-10-02) |
| June 4, 2020 | CSTL | A | 8,000 | · | · | 8,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 1, 2020 | CSTL | A | 16,000 | · | · | 16,000 Direct | · | Acquired | (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| May 28, 2026 | CSTL | Restricted Stock Units | Common Stock | · | · | 11,766 | Acquired |
| May 22, 2026 | CSTL | Restricted Stock Units | Common Stock | · | · | 13,667 | Disposed |
| May 22, 2025 | CSTL | Restricted Stock Units | Common Stock | · | · | 13,667 | Acquired |
| May 21, 2025 | CSTL | Restricted Stock Units | Common Stock | · | · | 8,673 | Disposed |
| May 25, 2024 | CSTL | Restricted Stock Units | Common Stock | · | · | 8,636 | Disposed |
| May 23, 2024 | CSTL | Restricted Stock Units | Common Stock | · | · | 8,673 | Acquired |
| June 2, 2023 | CSTL | Restricted Stock Units | Common Stock | · | · | 3,825 | Disposed |
| May 25, 2023 | CSTL | Restricted Stock Units | Common Stock | · | · | 8,636 | Acquired |
| June 10, 2022 | CSTL | Restricted Stock Units | Common Stock | · | · | 830 | Disposed |
| June 2, 2022 | CSTL | Stock option (right to buy) | Common Stock | $20.77 | June 1, 2032 | 7,647 | Acquired |
| June 2, 2022 | CSTL | Restricted Stock Units | Common Stock | · | · | 3,825 | Acquired |
| June 10, 2021 | CSTL | Stock option (right to buy) | Common Stock | $71.22 | June 9, 2031 | 3,379 | Acquired |
| June 10, 2021 | CSTL | Restricted Stock Units | Common Stock | · | · | 830 | Acquired |
| June 4, 2020 | CSTL | Stock option (right to buy) | Common Stock | $37.50 | June 3, 2030 | 8,000 | Acquired |
| April 1, 2020 | CSTL | Stock option (right to buy) | Common Stock | $28.77 | March 31, 2030 | 16,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).