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| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| KRT | Guo Jian | Chief Financial Officer | May 12 '26 | Option Exercise | 0.00 | 8,000 | 0 | 39,062 | May 14 |
| KRT | Guo Jian | Chief Financial Officer | Nov 12 '25 | Buy | 22.11 | 1,361 | 30,092 | 31,062 | Nov 14 |
| KRT | Guo Jian | Chief Financial Officer | Aug 15 '25 | Option Exercise | 16.53 | 2,450 | 40,499 | 29,701 | Aug 18 |
| KRT | Guo Jian | Chief Financial Officer | May 12 '25 | Option Exercise | 0.00 | 8,000 | 0 | 30,030 | May 15 |
| KRT | Guo Jian | Chief Financial Officer | Nov 18 '24 | Option Exercise | 16.53 | 2,500 | 41,325 | 22,030 | Nov 20 |
| KRT | Guo Jian | Chief Financial Officer | Aug 19 '24 | Option Exercise | 16.53 | 2,000 | 33,060 | 19,530 | Aug 20 |
| KRT | Guo Jian | Chief Financial Officer | May 12 '24 | Option Exercise | 0.00 | 8,000 | 0 | 20,011 | May 13 |
| KRT | Guo Jian | Chief Financial Officer | May 08 '24 | Option Exercise | 16.53 | 3,500 | 57,855 | 12,011 | May 13 |
| KRT | Guo Jian | Chief Financial Officer | Feb 01 '24 | Option Exercise | 0.00 | 3,750 | 0 | 9,552 | Feb 02 |
| KRT | Guo Jian | Chief Financial Officer | Aug 10 '23 | Option Exercise | 16.53 | 3,000 | 49,590 | 5,802 | Aug 11 |
| KRT | Guo Jian | Chief Financial Officer | Feb 01 '23 | Option Exercise | 0.00 | 3,750 | 0 | 4,150 | Feb 01 |
| KRT | Guo Jian | Chief Financial Officer | Nov 17 '22 | Buy | 13.96 | 850 | 11,864 | 500 | Nov 17 |