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Xia Ding
Insider
First SEC filing: Jan. 26, 2026 · Latest: Jan. 26, 2026
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
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 |
|---|---|---|---|---|---|---|---|---|---|
| July 23, 2026 | USNA | M | 1,632 | · | · | 4,895 Direct | -25.00% | Disposed | (price as of 2026-10-02) |
| July 23, 2026 | USNA | F | 604 | $20.92 | $12,636 | 8,278 Direct | -6.80% | Disposed | -29.2% (price as of 2026-10-02) |
| July 23, 2026 | USNA | M | 1,632 | · | · | 8,882 Direct | +22.51% | Acquired | (price as of 2026-10-02) |
| May 7, 2026 | USNA | A | 6,527 | · | · | 6,527 Direct | · | Acquired | (price as of 2026-10-02) |
| April 23, 2026 | USNA | M | 1,057 | · | · | 7,641 Direct | +16.05% | Acquired | (price as of 2026-10-02) |
| April 23, 2026 | USNA | F | 391 | $19.24 | $7,523 | 7,250 Direct | -5.12% | Disposed | -23.0% (price as of 2026-10-02) |
| April 23, 2026 | USNA | M | 1,057 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Jan. 22, 2026 | USNA | M | 1,058 | · | · | 1,057 Direct | -50.02% | Disposed | (price as of 2026-10-02) |
| Jan. 22, 2026 | USNA | F | 392 | $22.51 | $8,824 | 6,584 Direct | -5.62% | Disposed | -34.2% (price as of 2026-10-02) |
| Jan. 22, 2026 | USNA | M | 1,058 | · | · | 6,976 Direct | +17.88% | Acquired | (price as of 2026-10-02) |
| Oct. 23, 2025 | USNA | M | 1,057 | · | · | 6,394 Direct | +19.81% | Acquired | (price as of 2026-10-02) |
| Oct. 23, 2025 | USNA | F | 476 | $20.63 | $9,820 | 5,918 Direct | -7.44% | Disposed | -28.2% (price as of 2026-10-02) |
| Oct. 23, 2025 | USNA | M | 1,057 | · | · | 2,115 Direct | -33.32% | Disposed | (price as of 2026-10-02) |
| July 24, 2025 | USNA | M | 1,058 | · | · | 3,172 Direct | -25.01% | Disposed | (price as of 2026-10-02) |
| July 24, 2025 | USNA | F | 265 | $32.09 | $8,504 | 5,337 Direct | -4.73% | Disposed | -53.8% (price as of 2026-10-02) |
| July 24, 2025 | USNA | M | 1,058 | · | · | 5,602 Direct | +23.28% | Acquired | (price as of 2026-10-02) |
| May 20, 2025 | USNA | A | 4,230 | · | · | 4,230 Direct | · | Acquired | (price as of 2026-10-02) |
| May 2, 2025 | USNA | M | 674 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 2, 2025 | USNA | F | 169 | $29.44 | $4,975 | 4,544 Direct | -3.59% | Disposed | -49.7% (price as of 2026-10-02) |
| May 2, 2025 | USNA | M | 674 | · | · | 4,713 Direct | +16.69% | Acquired | (price as of 2026-10-02) |
| Feb. 2, 2025 | USNA | M | 674 | · | · | 674 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| Feb. 2, 2025 | USNA | F | 169 | $32.57 | $5,504 | 4,039 Direct | -4.02% | Disposed | -54.5% (price as of 2026-10-02) |
| Feb. 2, 2025 | USNA | M | 674 | · | · | 4,208 Direct | +19.07% | Acquired | (price as of 2026-10-02) |
| Nov. 2, 2024 | USNA | M | 675 | · | · | 1,348 Direct | -33.37% | Disposed | (price as of 2026-10-02) |
| Nov. 2, 2024 | USNA | F | 169 | $37.29 | $6,302 | 3,534 Direct | -4.56% | Disposed | -60.3% (price as of 2026-10-02) |
| Nov. 2, 2024 | USNA | M | 675 | · | · | 3,703 Direct | +22.29% | Acquired | (price as of 2026-10-02) |
| Aug. 2, 2024 | USNA | M | 674 | · | · | 2,023 Direct | -24.99% | Disposed | (price as of 2026-10-02) |
| Aug. 2, 2024 | USNA | F | 169 | $42.82 | $7,237 | 3,028 Direct | -5.29% | Disposed | -65.4% (price as of 2026-10-02) |
| Aug. 2, 2024 | USNA | M | 674 | · | · | 3,197 Direct | +26.71% | Acquired | (price as of 2026-10-02) |
| May 2, 2024 | USNA | A | 2,697 | · | · | 2,697 Direct | · | Acquired | (price as of 2026-10-02) |
| April 24, 2024 | USNA | M | 490 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| April 24, 2024 | USNA | F | 123 | $43.70 | $5,375 | 2,523 Direct | -4.65% | Disposed | -66.1% (price as of 2026-10-02) |
| April 24, 2024 | USNA | M | 490 | · | · | 2,646 Direct | +22.73% | Acquired | (price as of 2026-10-02) |
| Jan. 24, 2024 | USNA | M | 491 | · | · | 490 Direct | -50.05% | Disposed | (price as of 2026-10-02) |
| Jan. 24, 2024 | USNA | F | 123 | $47.70 | $5,867 | 2,156 Direct | -5.40% | Disposed | -68.9% (price as of 2026-10-02) |
| Jan. 24, 2024 | USNA | M | 491 | · | · | 2,279 Direct | +27.46% | Acquired | (price as of 2026-10-02) |
| Oct. 24, 2023 | USNA | M | 490 | · | · | 1,911 Direct | +34.48% | Acquired | (price as of 2026-10-02) |
| Oct. 24, 2023 | USNA | F | 123 | $55.43 | $6,818 | 1,788 Direct | -6.44% | Disposed | -73.3% (price as of 2026-10-02) |
| Oct. 24, 2023 | USNA | M | 490 | · | · | 981 Direct | -33.31% | Disposed | (price as of 2026-10-02) |
| July 27, 2023 | USNA | S | 606 | $65.60 | $39,754 | 1,421 Direct | -29.90% | Disposed | -77.4% (price as of 2026-10-02) |
| July 24, 2023 | USNA | M | 491 | · | · | 2,150 Direct | +29.60% | Acquired | (price as of 2026-10-02) |
| July 24, 2023 | USNA | F | 123 | $63.79 | $7,846 | 2,027 Direct | -5.72% | Disposed | -76.8% (price as of 2026-10-02) |
| July 24, 2023 | USNA | M | 491 | · | · | 1,471 Direct | -25.03% | Disposed | (price as of 2026-10-02) |
| July 24, 2023 | USNA | M | 491 | · | · | 2,150 Direct | +29.60% | Acquired | (price as of 2026-10-02) |
| July 24, 2023 | USNA | F | 123 | $63.79 | $7,846 | 2,027 Direct | -5.72% | Disposed | -76.8% (price as of 2026-10-02) |
| July 24, 2023 | USNA | M | 491 | · | · | 1,471 Direct | -25.03% | Disposed | (price as of 2026-10-02) |
| April 25, 2023 | USNA | M | 404 | · | · | 1,760 Direct | +29.79% | Acquired | (price as of 2026-10-02) |
| April 25, 2023 | USNA | F | 101 | $62.61 | $6,324 | 1,659 Direct | -5.74% | Disposed | -76.3% (price as of 2026-10-02) |
| April 25, 2023 | USNA | M | 404 | · | · | 1,962 Direct | -17.08% | Disposed | (price as of 2026-10-02) |
| April 24, 2023 | USNA | A | 1,962 | · | · | 2,366 Direct | +485.64% | Acquired | (price as of 2026-10-02) |
| Jan. 25, 2023 | USNA | M | 404 | · | · | 1,457 Direct | +38.37% | Acquired | (price as of 2026-10-02) |
| Jan. 25, 2023 | USNA | F | 101 | $56.10 | $5,666 | 1,356 Direct | -6.93% | Disposed | -73.6% (price as of 2026-10-02) |
| Jan. 25, 2023 | USNA | M | 404 | · | · | 404 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| Oct. 25, 2022 | USNA | M | 404 | · | · | 1,154 Direct | +53.87% | Acquired | (price as of 2026-10-02) |
| Oct. 25, 2022 | USNA | F | 101 | $58.23 | $5,881 | 1,053 Direct | -8.75% | Disposed | -74.5% (price as of 2026-10-02) |
| Oct. 25, 2022 | USNA | M | 404 | · | · | 808 Direct | -33.33% | Disposed | (price as of 2026-10-02) |
| July 25, 2022 | USNA | M | 404 | · | · | 851 Direct | +90.38% | Acquired | (price as of 2026-10-02) |
| July 25, 2022 | USNA | F | 101 | $68.67 | $6,936 | 750 Direct | -11.87% | Disposed | -78.4% (price as of 2026-10-02) |
| July 25, 2022 | USNA | M | 404 | · | · | 1,212 Direct | -25.00% | Disposed | (price as of 2026-10-02) |
| April 25, 2022 | USNA | A | 1,616 | · | · | 1,616 Direct | · | Acquired | (price as of 2026-10-02) |
| April 25, 2022 | USNA | M | 298 | · | · | 522 Direct | +133.04% | Acquired | (price as of 2026-10-02) |
| April 25, 2022 | USNA | F | 75 | $78.74 | $5,906 | 447 Direct | -14.37% | Disposed | -81.2% (price as of 2026-10-02) |
| April 25, 2022 | USNA | M | 298 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Jan. 25, 2022 | USNA | M | 299 | · | · | 297 Direct | -50.17% | Disposed | (price as of 2026-10-02) |
| Jan. 25, 2022 | USNA | F | 75 | $98.48 | $7,386 | 224 Direct | -25.08% | Disposed | -85.0% (price as of 2026-10-02) |
| Jan. 25, 2022 | USNA | M | 299 | · | · | 299 Direct | · | Acquired | (price as of 2026-10-02) |
| Oct. 25, 2021 | USNA | A | 596 | · | · | 596 Direct | · | Acquired | (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| July 23, 2026 | USNA | Restricted Stock Units | Common Stock | · | · | 1,632 | Disposed |
| May 7, 2026 | USNA | Restricted Stock Units | Common Stock | · | · | 6,527 | Acquired |
| April 23, 2026 | USNA | Restricted Stock Units | Common Stock | · | · | 1,057 | Disposed |
| Jan. 22, 2026 | USNA | Restricted Stock Units | Common Stock | · | · | 1,058 | Disposed |
| Oct. 23, 2025 | USNA | Restricted Stock Units | Common Stock | · | · | 1,057 | Disposed |
| July 24, 2025 | USNA | Restricted Stock Units | Common Stock | · | · | 1,058 | Disposed |
| May 20, 2025 | USNA | Restricted Stock Units | Common Stock | · | · | 4,230 | Acquired |
| May 2, 2025 | USNA | Restricted Stock Units | Common Stock | · | · | 674 | Disposed |
| Feb. 2, 2025 | USNA | Restricted Stock Units | Common Stock | · | · | 674 | Disposed |
| Nov. 2, 2024 | USNA | Restricted Stock Units | Common Stock | · | · | 675 | Disposed |
| Aug. 2, 2024 | USNA | Restricted Stock Units | Common Stock | · | · | 674 | Disposed |
| May 2, 2024 | USNA | Restricted Stock Units | Common Stock | · | · | 2,697 | Acquired |
| April 24, 2024 | USNA | Restricted Stock Units | Common Stock | · | · | 490 | Disposed |
| Jan. 24, 2024 | USNA | Restricted Stock Units | Common Stock | · | · | 491 | Disposed |
| Oct. 24, 2023 | USNA | Restricted Stock Units | Common Stock | · | · | 490 | Disposed |
| July 24, 2023 | USNA | Restricted Stock Units | Common Stock | · | · | 491 | Disposed |
| July 24, 2023 | USNA | Restricted Stock Units | Common Stock | · | · | 491 | Disposed |
| April 25, 2023 | USNA | Restricted Stock Units | Common Stock | · | · | 404 | Disposed |
| April 24, 2023 | USNA | Restricted Stock Units | Common Stock | · | · | 1,962 | Acquired |
| Jan. 25, 2023 | USNA | Restricted Stock Units | Common Stock | · | · | 404 | Disposed |
| Oct. 25, 2022 | USNA | Restricted Stock Units | Common Stock | · | · | 404 | Disposed |
| July 25, 2022 | USNA | Restricted Stock Units | Common Stock | · | · | 404 | Disposed |
| April 25, 2022 | USNA | Restricted Stock Units | Common Stock | · | · | 1,616 | Acquired |
| April 25, 2022 | USNA | Restricted Stock Units | Common Stock | · | · | 298 | Disposed |
| Jan. 25, 2022 | USNA | Restricted Stock Unit | Common Stock | · | · | 299 | Disposed |
| Oct. 25, 2021 | USNA | Restricted Stock Unit | Common Stock | · | · | 596 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).