As of September 09, 2026, the three largest insider holders of BYSI are Capital China Life Sciences Usd Fund Iii, L.P. Decheng (TenPercentOwner, 2.51Mn shares), Capital China Life Sciences Usd Fund Iii, L.P. Decheng (TenPercentOwner, 2.51Mn shares), Capital China Life Sciences Usd Fund Iii, L.P. Decheng (TenPercentOwner, 1.52Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Capital China Life Sciences Usd Fund Iii, L.P. Decheng | TenPercentOwner | 0 | 1,518,893 | 1,518,893 | 100.0% | 20 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 |
|---|---|---|---|---|---|---|---|---|
| 01 Jul, 2026 | Min Qiu | Chief Executive Officer | Acquired A | 100,000 | $0.00 | $0 | 100,000 | Direct |
| 01 Jul, 2026 | Jiangwen Majeti | Director | Acquired A | 100,000 | $0.00 | $0 | 100,000 | Direct |
| 20 Mar, 2026 | Lan Huang | Chief Executive Officer | Disposed G | 260,582 | $0.00 | $0 | 0 | Indirect |
| 01 Apr, 2026 | Matthew Kirkby | Director | Acquired A | 23,902 | $0.00 | $0 | 23,902 | Direct |
| 01 Apr, 2026 | Yingjuan June Lu | Chief Scientific Officer | Acquired A | 17,840 | $0.00 | $0 | 17,840 | Direct |
| 01 Apr, 2026 | Brendan Delaney | Director | Acquired A | 20,427 | $0.00 | $0 | 20,427 | Direct |
| 01 Apr, 2026 | Yingjuan June Lu | Chief Scientific Officer | Acquired A | 17,840 | $0.00 | $0 | 17,840 | Direct |
| 01 Apr, 2026 | Yingjuan June Lu | Chief Scientific Officer | Acquired A | 17,840 | $0.00 | $0 | 17,840 | Direct |
| 01 Apr, 2026 | Lan Huang | Chief Executive Officer | Acquired A | 11,514 | $0.00 | $0 | 11,514 | Direct |
| 01 Apr, 2026 | Sihai Xu | Director | Acquired A | 18,689 | $0.00 | $0 | 18,689 | Direct |
| 01 Apr, 2026 | Sihai Xu | Director | Acquired A | 18,689 | $0.00 | $0 | 18,689 | Direct |
| 01 Apr, 2026 | Yingjuan June Lu | Chief Scientific Officer | Acquired A | 17,840 | $0.00 | $0 | 17,840 | Direct |
| 01 Apr, 2026 | Lan Huang | Chief Executive Officer | Acquired A | 11,514 | $0.00 | $0 | 11,514 | Direct |
| 01 Apr, 2026 | Sihai Xu | Director | Acquired A | 18,689 | $0.00 | $0 | 18,689 | Direct |
| 01 Apr, 2026 | Sihai Xu | Director | Acquired A | 18,689 | $0.00 | $0 | 18,689 | Direct |
| 01 Apr, 2026 | Lan Huang | Chief Executive Officer | Acquired A | 11,514 | $0.00 | $0 | 11,514 | Direct |
| 01 Apr, 2026 | Patrick Fabbio | Director | Acquired A | 22,165 | $0.00 | $0 | 22,165 | Direct |
| 01 Apr, 2026 | Lan Huang | Chief Executive Officer | Acquired A | 11,514 | $0.00 | $0 | 11,514 | Direct |
| 01 Apr, 2026 | Lan Huang | Chief Executive Officer | Acquired A | 11,514 | $0.00 | $0 | 11,514 | Direct |
| 01 Apr, 2026 | Brendan Delaney | Director | Acquired A | 20,427 | $0.00 | $0 | 20,427 | Direct |