Per Business Quant data, OSR Health insiders hold 24.32Mn shares in total based on their latest Form 4 filings, or 73.93% of the 32.89Mn shares outstanding; that total is unchanged from the end of Q2 2026 and Q3 2025.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Kuk Hyoun Hwang | President And Ceo | 0 | 24,317,738 | 24,317,738 | 91.8% | 19 Feb, 2025 |
| 2 | Global Life Science Investors Llc Bellevue | TenPercentOwner | 2,043,500 | 0 | 2,043,500 | 7.7% | 19 Feb, 2025 |
| 3 | In Chul Chung | Director | 20,000 | 0 | 20,000 | 0.1% | 16 Feb, 2023 |
| 4 | Steven Reed | Director | 20,000 | 0 | 20,000 | 0.1% | 16 Feb, 2023 |
| 5 | Jin Whan Park | Director | 20,000 | 0 | 20,000 | 0.1% | 16 Feb, 2023 |
| 6 | Rad Roberts | Director | 20,000 | 0 | 20,000 | 0.1% | 16 Feb, 2023 |
| 7 | Hosun Euh | Director | 20,000 | 0 | 20,000 | 0.1% | 16 Feb, 2023 |
| 8 | David Jin Yoo | Chief Financial Officer | 20,000 | 0 | 20,000 | 0.1% | 27 Mar, 2023 |
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 |
|---|---|---|---|---|---|---|---|---|
| 14 Feb, 2025 | Kuk Hyoun Hwang | President And Ceo | Acquired J | 43,000 | $0.00 | $0 | 2,043,500 | Indirect |
| 14 Feb, 2025 | Global Life Science Investors Llc Bellevue | TenPercentOwner | Acquired J | 43,000 | $0.00 | $0 | 2,043,500 | Direct |
| 14 Feb, 2025 | Kuk Hyoun Hwang | President And Ceo | Acquired J | 7,531,634 | $0.00 | $0 | 9,575,134 | Indirect |
| 14 Feb, 2025 | Kuk Hyoun Hwang | President And Ceo | Acquired J | 3,123,970 | $0.00 | $0 | 12,699,104 | Indirect |
| 23 Mar, 2023 | David Jin Yoo | Chief Financial Officer | Acquired A | 20,000 | $0.00 | $0 | 20,000 | Direct |
| 23 Mar, 2023 | Kuk Hyoun Hwang | Chief Executive Officer | Disposed J | 20,000 | $0.00 | $0 | 2,000,500 | Indirect |
| 23 Mar, 2023 | Global Life Science Investors Llc Bellevue | TenPercentOwner | Disposed J | 20,000 | $0.00 | $0 | 2,000,500 | Direct |
| 23 Mar, 2023 | Kuk Hyoun Hwang | Chief Executive Officer | Disposed J | 20,000 | $0.00 | $0 | 370,000 | Indirect |
| 23 Mar, 2023 | David Jin Yoo | Chief Financial Officer | Acquired A | 20,000 | $0.00 | $0 | 20,000 | Direct |
| 23 Mar, 2023 | Global Life Science Investors Llc Bellevue | TenPercentOwner | Disposed J | 20,000 | $0.00 | $0 | 370,000 | Direct |
| 21 Feb, 2023 | Global Life Science Investors Llc Bellevue | TenPercentOwner | Acquired J | 225,000 | $0.00 | $0 | 2,025,000 | Direct |
| 21 Feb, 2023 | Kuk Hyoun Hwang | Chief Executive Officer | Acquired J | 225,000 | $0.00 | $0 | 2,025,000 | Indirect |
| 21 Feb, 2023 | Global Life Science Investors Llc Bellevue | TenPercentOwner | Disposed J | 4,500 | $0.00 | $0 | 2,020,500 | Direct |
| 21 Feb, 2023 | Kuk Hyoun Hwang | Chief Executive Officer | Disposed J | 4,500 | $0.00 | $0 | 2,020,500 | Indirect |
| 14 Feb, 2023 | In Chul Chung | Director | Acquired A | 20,000 | $0.00 | $0 | 20,000 | Direct |
| 14 Feb, 2023 | Hosun Euh | Director | Acquired A | 20,000 | $0.00 | $0 | 20,000 | Direct |
| 14 Feb, 2023 | Steven Reed | Director | Acquired A | 20,000 | $0.00 | $0 | 20,000 | Direct |
| 14 Feb, 2023 | Rad Roberts | Director | Acquired A | 20,000 | $0.00 | $0 | 20,000 | Direct |
| 14 Feb, 2023 | Jin Whan Park | Director | Acquired A | 20,000 | $0.00 | $0 | 20,000 | Direct |
| 14 Feb, 2023 | Kuk Hyoun Hwang | Chief Executive Officer | Disposed J | 20,000 | $0.00 | $0 | 1,705,000 | Indirect |