Lan Huang
CIK 1731317 · View on SEC EDGAR ↗
Insider
First SEC filing: Dec. 31, 2024 · Latest: Dec. 31, 2024
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 3 non-open-market transactions below
last 12 months, based on the transactions shown below
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 |
|---|---|---|---|---|---|---|---|---|---|
| April 1, 2026 | BYSI | A | 11,514 | — | — | 11,514 Direct | — | Acquired | (price as of 2026-08-21) |
| March 20, 2026 | BYSI | G | 260,582 | — | — | 0 Indirect | -100.00% | Disposed | (price as of 2026-08-21) |
| April 21, 2025 | BYSI | A | 43,630 | — | — | 43,630 Direct | — | Acquired | (price as of 2026-08-21) |
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 |
|---|---|---|---|---|---|---|---|
| April 1, 2026 | BYSI | Stock Options (right to buy) | Ordinary Shares (11,514) | $1.80 | April 1, 2031 | 11,514 | Acquired |
| April 21, 2025 | BYSI | Stock Options (right to buy) | Ordinary Shares (43,630) | $1.44 | April 21, 2030 | 43,630 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 9 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Dec. 31, 2024 | BYSI | Ordinary Shares | 2 | Indirect |
| Dec. 31, 2024 | BYSI | Ordinary Shares | 1 | Indirect |
| Dec. 31, 2024 | BYSI | Ordinary Shares | 1 | Indirect |
| Dec. 31, 2024 | BYSI | Ordinary Shares | — | Indirect |
| Dec. 31, 2024 | BYSI | Ordinary Shares | — | Indirect |
| Dec. 31, 2024 | BYSI | Stock Options (right to buy)→ Ordinary Shares (460,000) | 460,000 | Direct |
| Dec. 31, 2024 | BYSI | Stock Options (right to buy)→ Ordinary Shares (90,343) | 90,343 | Direct |
| Dec. 31, 2024 | BYSI | Stock Options (right to buy)→ Ordinary Shares (400,000) | 400,000 | Direct |
| Dec. 31, 2024 | BYSI | Stock Options (right to buy)→ Ordinary Shares (33,663) | 33,663 | Direct |