Astrana Health's three largest insider shareholders as of August 29, 2026 are Albert Waichow Young (Chief Administrative Officer, 11.38Mn shares), Albert Waichow Young (Chief Administrative Officer, 11.38Mn shares), Thomas S. Lam (President And Co Ceo, 10.19Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Albert Waichow Young | Chief Administrative Officer | 1,184,749 | 10,191,660 | 11,376,409 | 55.3% | 06 Dec, 2022 |
| 2 | Physicians Of California, A Professional Medical Corp Allied | TenPercentOwner | 6,132,802 | 0 | 6,132,802 | 29.8% | 18 Feb, 2025 |
| 3 | Brandon Sim | Ceo And President | 1,245,292 | 0 | 1,245,292 | 6.0% | 30 Jun, 2026 |
| 4 | Kenneth T. Sim | Executive Chairman | 739,407 | 0 | 739,407 | 3.6% | 07 Apr, 2026 |
| 5 | Thomas S. Lam | President And Co Ceo | 465,657 | 0 | 465,657 | 2.3% | 07 Apr, 2026 |
| 6 | Dinesh M. Kumar | Chief Medical Officer | 177,655 | 0 | 177,655 | 0.9% | 03 Apr, 2026 |
| 7 | Chandan Basho | Coo And Cfo | 159,610 | 0 | 159,610 | 0.8% | 18 May, 2026 |
| 8 | Linda Dong | Director | 97,133 | 0 | 97,133 | 0.5% | 12 Jun, 2026 |
| 9 | Matthew Mazdyasni | Director | 39,288 | 0 | 39,288 | 0.2% | 12 Jun, 2026 |
| 10 | David Schmidt | Director | 36,019 | 0 | 36,019 | 0.2% | 18 Aug, 2026 |
| 11 | John Chiang | Director | 35,373 | 0 | 35,373 | 0.2% | 12 Jun, 2026 |
| 12 | Mitchell W Kitayama | Director | 24,337 | 0 | 24,337 | 0.1% | 01 Sep, 2026 |
| 13 | Eric Chin | Chief Financial Officer | 20,844 | 0 | 20,844 | 0.1% | 04 Apr, 2022 |
| 14 | Weili Dai, | Director | 18,188 | 0 | 18,188 | 0.1% | 12 Jun, 2026 |
| 15 | John Vong | Chief Accounting Officer | 17,520 | 0 | 17,520 | 0.1% | 03 Dec, 2024 |
| 16 | Glenn Sobotka | Chief Accounting Officer | 2,246 | 0 | 2,246 | 0.0% | 11 Aug, 2026 |
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 |
|---|---|---|---|---|---|---|---|---|
| 31 Aug, 2026 | Mitchell W Kitayama | Director | Disposed D | 8,500 | $37.09 | $315.27K | 24,337 | Direct |
| 14 Aug, 2026 | David Schmidt | Director | Acquired M | 20,000 | $5.00 | $100.00K | 56,019 | Direct |
| 14 Aug, 2026 | David Schmidt | Director | Disposed D | 20,000 | $38.59 | $771.80K | 36,019 | Direct |
| 14 Aug, 2026 | David Schmidt | Director | Disposed M | 20,000 | $0.00 | $0 | 0 | Direct |
| 07 Aug, 2026 | Glenn Sobotka | Other | Disposed D | 11,793 | $0.00 | $0 | 2,246 | Direct |
| 27 Jun, 2026 | Brandon Sim | Ceo And President | Disposed F | 1,093 | $44.51 | $48.65K | 1,245,292 | Direct |
| 10 Jun, 2026 | Weili Dai, | Director | Acquired A | 4,525 | $0.00 | $0 | 18,188 | Direct |
| 10 Jun, 2026 | Matthew Mazdyasni | Director | Acquired A | 4,525 | $0.00 | $0 | 39,288 | Direct |
| 10 Jun, 2026 | Linda Dong | Director | Acquired A | 4,525 | $0.00 | $0 | 97,133 | Direct |
| 10 Jun, 2026 | David Schmidt | Director | Acquired A | 4,525 | $0.00 | $0 | 36,019 | Direct |
| 10 Jun, 2026 | Linda Dong | Director | Acquired A | 4,525 | $0.00 | $0 | 97,133 | Direct |
| 10 Jun, 2026 | Mitchell W Kitayama | Director | Acquired A | 4,991 | $0.00 | $0 | 32,837 | Direct |
| 10 Jun, 2026 | John Chiang | Director | Acquired A | 4,525 | $0.00 | $0 | 35,373 | Direct |
| 10 Jun, 2026 | Matthew Mazdyasni | Director | Acquired A | 4,525 | $0.00 | $0 | 39,288 | Direct |
| 16 May, 2026 | Chandan Basho | Coo And Cfo | Disposed F | 8,155 | $38.26 | $312.01K | 159,610 | Direct |
| 14 Apr, 2026 | Chandan Basho | Coo And Cfo | Disposed F | 3,870 | $29.07 | $112.50K | 167,765 | Direct |
| 06 Apr, 2026 | Brandon Sim | Ceo And President | Acquired A | 201,056 | $0.00 | $0 | 1,246,385 | Direct |
| 06 Apr, 2026 | Thomas S. Lam | Director | Acquired A | 41,667 | $0.00 | $0 | 465,657 | Direct |
| 06 Apr, 2026 | Thomas S. Lam | Director | Acquired A | 41,667 | $0.00 | $0 | 465,657 | Direct |
| 06 Apr, 2026 | Thomas S. Lam | Director | Acquired A | 41,667 | $0.00 | $0 | 465,657 | Direct |