Yingkai Xu
CIK 2057188 · View on SEC EDGAR ↗
Insider
Activist
First SEC filing: Feb. 20, 2025 · Latest: April 6, 2026
On this page
Insider at
Insider transactions
1 buys (P)
0 sells (S)
Net:
$380,000
Avg return of open purchases vs now:
310.0%
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
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| April 13, 2026 | MTEN | P | 1,520,000 | $0.25 | $380,000 | 1,520,000 Direct | — | Acquired | 310.0% (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.
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.