Isan Chen
Insider
First SEC filing: Sept. 14, 2021 · Latest: Sept. 14, 2021
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 31, 2023 | TYRA | A | 14,500 | · | · | 14,500 Direct | · | Acquired | (price as of 2026-10-02) |
| June 13, 2022 | TYRA | A | 14,500 | · | · | 14,500 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 17, 2021 | TYRA | C | 7,290 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Sept. 17, 2021 | TYRA | C | 16,366 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Sept. 17, 2021 | TYRA | C | 61,444 | · | · | 192,783 Direct | +46.78% | 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 31, 2023 | TYRA | Stock Option (Right to Buy) | Common Stock | $14.47 | May 30, 2033 | 14,500 | Acquired |
| June 13, 2022 | TYRA | Stock Option (Right to Buy) | Common Stock | $5.38 | June 12, 2032 | 14,500 | Acquired |
| Sept. 17, 2021 | TYRA | Series B Preferred Stock | Common Stock | · | · | 7,290 | Disposed |
| Sept. 17, 2021 | TYRA | Series A Preferred Stock | Common Stock | · | · | 16,366 | Disposed |
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.