As of September 29, 2026, the three largest insider holders of IBRX are Patrick Soon-Shiong (Executive Chairman, 251.02Mn shares), Patrick Soon-Shiong (Executive Chairman, 29.76Mn shares), Barry J. Simon (President And Coo, 2.80Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Patrick Soon-Shiong | Executive Chairman | 0 | 251,018,873 | 251,018,873 | 98.4% | 02 Apr, 2026 |
| 2 | Barry J. Simon | President And Coo | 2,802,788 | 0 | 2,802,788 | 1.1% | 26 Jun, 2026 |
| 3 | Richard Adcock | Ceo President | 560,344 | 0 | 560,344 | 0.2% | 24 Feb, 2026 |
| 4 | David C. Sachs | Chief Financial Officer | 300,143 | 0 | 300,143 | 0.1% | 24 Feb, 2026 |
| 5 | Cheryl Cohen | Director | 125,386 | 0 | 125,386 | 0.0% | 06 Jul, 2026 |
| 6 | Regan J Lauer | Chief Accounting Officer | 115,875 | 0 | 115,875 | 0.0% | 24 Feb, 2026 |
| 7 | Michael D Blaszyk | Director | 0 | 71,915 | 71,915 | 0.0% | 05 Jun, 2023 |
| 8 | John Owen Brennan | Director | 25,000 | 0 | 25,000 | 0.0% | 05 Jun, 2023 |
| 9 | Wesley Clark | Director | 8,000 | 0 | 8,000 | 0.0% | 05 Jun, 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 |
|---|---|---|---|---|---|---|---|---|
| 01 Jul, 2026 | Christobel Selecky | Director | Acquired M | 35,064 | $2.98 | $104.49K | 35,064 | Direct |
| 02 Jul, 2026 | Cheryl Cohen | Director | Acquired M | 55,979 | $2.98 | $166.82K | 256,596 | Direct |
| 01 Jul, 2026 | Christobel Selecky | Director | Acquired M | 124,414 | $2.99 | $372.00K | 159,478 | Direct |
| 02 Jul, 2026 | Cheryl Cohen | Director | Disposed S | 131,210 | $9.50 | $1.25Mn | 125,386 | Direct |
| 01 Jul, 2026 | Christobel Selecky | Director | Disposed S | 159,478 | $9.02 | $1.44Mn | 0 | Direct |
| 02 Jul, 2026 | Cheryl Cohen | Director | Disposed M | 55,979 | $0.00 | $0 | 111,958 | Direct |
| 01 Jul, 2026 | Christobel Selecky | Director | Disposed M | 35,064 | $0.00 | $0 | 0 | Direct |
| 01 Jul, 2026 | Christobel Selecky | Director | Disposed M | 124,414 | $0.00 | $0 | 0 | Direct |
| 29 Jun, 2026 | Christobel Selecky | Director | Acquired M | 32,173 | $2.98 | $95.88K | 32,173 | Direct |
| 29 Jun, 2026 | Christobel Selecky | Director | Acquired M | 33,549 | $2.99 | $100.31K | 65,722 | Direct |
| 29 Jun, 2026 | Christobel Selecky | Director | Acquired M | 30,000 | $2.84 | $85.20K | 95,722 | Direct |
| 29 Jun, 2026 | Christobel Selecky | Director | Disposed S | 95,722 | $9.01 | $862.22K | 0 | Direct |
| 30 Jun, 2026 | Christobel Selecky | Director | Acquired M | 700 | $2.98 | $2.09K | 700 | Direct |
| 30 Jun, 2026 | Christobel Selecky | Director | Acquired M | 300 | $2.99 | $897 | 1,000 | Direct |
| 30 Jun, 2026 | Christobel Selecky | Director | Disposed S | 1,000 | $9.00 | $9.00K | 0 | Direct |
| 29 Jun, 2026 | Christobel Selecky | Director | Disposed M | 32,173 | $0.00 | $0 | 35,764 | Direct |
| 29 Jun, 2026 | Christobel Selecky | Director | Disposed M | 33,549 | $0.00 | $0 | 124,714 | Direct |
| 29 Jun, 2026 | Christobel Selecky | Director | Disposed M | 30,000 | $0.00 | $0 | 132,786 | Direct |
| 30 Jun, 2026 | Christobel Selecky | Director | Disposed M | 700 | $0.00 | $0 | 35,064 | Direct |
| 30 Jun, 2026 | Christobel Selecky | Director | Disposed M | 300 | $0.00 | $0 | 124,414 | Direct |