YHC's three largest insider shareholders as of September 09, 2026 are Yilin Lu (President, 2.00Mn shares), Alexandra Hoffman (Director, 8.83K shares), Sean Dollinger (Chief Executive Officer, 2.92K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Yilin Lu | President | 2,000,537 | 0 | 2,000,537 | 99.3% | 19 Dec, 2025 |
| 2 | Alexandra Hoffman | Director | 8,834 | 0 | 8,834 | 0.4% | 02 Dec, 2024 |
| 3 | Sean Dollinger | Chief Executive Officer | 2,922 | 0 | 2,922 | 0.1% | 02 Oct, 2025 |
| 4 | James P. O'Brien | Director | 936 | 0 | 936 | 0.0% | 02 Apr, 2025 |
| 5 | Lijun Chen | Director | 537 | 0 | 537 | 0.0% | 02 Oct, 2025 |
| 6 | Hong Chun Yeung | Director | 537 | 0 | 537 | 0.0% | 02 Oct, 2025 |
| 7 | Jing Lu | Director | 537 | 0 | 537 | 0.0% | 02 Oct, 2025 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 30 Sep, 2025 | Yilin Lu | President | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Yilin Lu | President | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Yilin Lu | President | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 17 Dec, 2025 | Yilin Lu | President | Acquired P | 2,000,000 | $0.90 | $1.80Mn | 2,000,537 | Direct |
| 17 Dec, 2025 | Yilin Lu | President | Acquired P | 2,000,000 | $0.90 | $1.80Mn | 2,000,537 | Direct |
| 17 Dec, 2025 | Yilin Lu | President | Acquired P | 2,000,000 | $0.90 | $1.80Mn | 2,000,537 | Direct |
| 30 Sep, 2025 | Yilin Lu | President | Disposed M | 179 | $0.00 | $0 | 892 | Direct |
| 30 Sep, 2025 | Yilin Lu | President | Disposed M | 179 | $0.00 | $0 | 892 | Direct |
| 30 Sep, 2025 | Yilin Lu | President | Disposed M | 179 | $0.00 | $0 | 892 | Direct |
| 30 Sep, 2025 | Lijun Chen | Director | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Yilin Lu | Director | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Hong Chun Yeung | Director | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Hong Chun Yeung | Director | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Jing Lu | Director | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Yilin Lu | Director | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Jing Lu | Director | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Hong Chun Yeung | Director | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Yilin Lu | Director | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Jing Lu | Director | Acquired M | 179 | $0.00 | $0 | 537 | Direct |
| 30 Sep, 2025 | Sean Dollinger | Chief Executive Officer | Acquired M | 90 | $0.00 | $0 | 2,922 | Direct |