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| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| USNA | Ding Xia | Director | Jul 23 '26 | Option Exercise | 0.00 | 1,632 | 0 | 8,882 | Jul 27 |
| USNA | Ding Xia | Director | Apr 23 '26 | Option Exercise | 0.00 | 1,057 | 0 | 7,641 | Apr 27 |
| USNA | Ding Xia | Director | Jan 22 '26 | Option Exercise | 0.00 | 1,058 | 0 | 6,976 | Jan 26 |
| USNA | Ding Xia | Director | Oct 23 '25 | Option Exercise | 0.00 | 1,057 | 0 | 6,394 | Oct 27 |
| USNA | Ding Xia | Director | Jul 24 '25 | Option Exercise | 0.00 | 1,058 | 0 | 5,602 | Jul 28 |
| USNA | Ding Xia | Director | May 02 '25 | Option Exercise | 0.00 | 674 | 0 | 4,713 | May 06 |
| USNA | Ding Xia | Director | Feb 02 '25 | Option Exercise | 0.00 | 674 | 0 | 4,208 | Feb 03 |
| USNA | Ding Xia | Director | Nov 02 '24 | Option Exercise | 0.00 | 675 | 0 | 3,703 | Nov 05 |
| USNA | Ding Xia | Director | Aug 02 '24 | Option Exercise | 0.00 | 674 | 0 | 3,197 | Aug 05 |
| USNA | Ding Xia | Director | Apr 24 '24 | Option Exercise | 0.00 | 490 | 0 | 2,646 | Apr 25 |