Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| KRT | Cheng Marvin | VP-Manufacturing, Secy | 09/08/2026 | Verkauf | 48.50 | 2,000 | 97,000 | Form 4 |
| KRT | Cheng Marvin | VP-Manufacturing, Secy | 09/04/2026 | Verkauf | 48.38 | 4,000 | 193,500 | Form 4 |
| KRT | Cheng Marvin | VP-Manufacturing, Secy | 09/01/2026 | Verkauf | 47.75 | 2,000 | 95,500 | Form 4 |
| KRT | Cheng Marvin | VP-Manufacturing, Secy | 08/20/2026 | Verkauf | 47.33 | 4,500 | 212,985 | Form 4 |
| KRT | Guo Jian | Chief Financial Officer | 08/13/2026 | Optionsausübung | 16.53 | 4,700 | 77,691 | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).