As of September 17, 2026, RadNet's top three insider holders are Alma Gregory Sorensen (Chief Strategy Officer, 1.20Mn shares), Stephen M Forthuber (Pres Ceo Eastern Operations, 507.20K shares), Howard G Berger (President, Ceo, 498.40K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Alma Gregory Sorensen | Chief Strategy Officer | 1,201,923 | 0 | 1,201,923 | 39.0% | 23 Mar, 2026 |
| 2 | Stephen M Forthuber | Pres Ceo Eastern Operations | 507,199 | 0 | 507,199 | 16.4% | 16 Jun, 2026 |
| 3 | Norman R Hames | Pres And Coo West Operations | 261,228 | 22,989 | 284,217 | 9.2% | 05 Mar, 2026 |
| 4 | Mital Patel | Evp Of Fin Planning, Cao | 200,175 | 0 | 200,175 | 6.5% | 05 Mar, 2026 |
| 5 | David L Swartz | Director | 177,013 | 0 | 177,013 | 5.7% | 22 Jun, 2026 |
| 6 | Lawrence L Levitt | Director | 167,902 | 0 | 167,902 | 5.4% | 03 Jun, 2026 |
| 7 | Ranjan Jayanathan | Chief Information Officer | 138,198 | 0 | 138,198 | 4.5% | 21 Aug, 2025 |
| 8 | Mark Stolper | Evp, Chief Financial Officer | 121,943 | 0 | 121,943 | 4.0% | 05 Mar, 2026 |
| 9 | David Jeffrey Katz | Evp And Chief Legal Officer | 90,866 | 0 | 90,866 | 2.9% | 05 Mar, 2026 |
| 10 | Cornelis Wesdorp | Pres Ceo, Digital Health | 69,075 | 0 | 69,075 | 2.2% | 18 Jun, 2026 |
| 11 | Michael N Murdock | Evp, Mergers And Acquisitions | 46,697 | 0 | 46,697 | 1.5% | 05 Mar, 2026 |
| 12 | Laura Pastre Jacobs | Director | 29,953 | 0 | 29,953 | 1.0% | 03 Jun, 2026 |
| 13 | Howard G Berger | President, Ceo | 0 | 19,910 | 19,910 | 0.6% | 18 Jun, 2026 |
| 14 | Christine Nayoma Gordon | Director | 10,879 | 0 | 10,879 | 0.4% | 11 Jun, 2024 |
| 15 | Ruth Louisa Villigerwilson | Senior Vice President Of Hr | 9,884 | 0 | 9,884 | 0.3% | 06 Mar, 2023 |
| 16 | Gregory E. Spurlock | Director | 8,236 | 0 | 8,236 | 0.3% | 03 Jun, 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Jun, 2026 | David L Swartz | Director | Disposed S | 2,699 | $53.89 | $145.45K | 177,013 | Direct |
| 16 Jun, 2026 | Cornelis Wesdorp | Pres Ceo, Digital Health | Disposed S | 4,750 | $58.11 | $276.02K | 69,075 | Direct |
| 16 Jun, 2026 | Howard G Berger | President, Ceo | Disposed G | 90 | $0.00 | $0 | 19,910 | Indirect |
| 15 Jun, 2026 | Stephen M Forthuber | Pres Ceo Eastern Operations | Disposed S | 24,214 | $57.79 | $1.40Mn | 527,052 | Direct |
| 15 Jun, 2026 | Stephen M Forthuber | Pres Ceo Eastern Operations | Disposed S | 19,853 | $58.61 | $1.16Mn | 507,199 | Direct |
| 02 Jun, 2026 | David L Swartz | Director | Acquired A | 2,946 | $0.00 | $0 | 179,712 | Direct |
| 02 Jun, 2026 | Gregory E. Spurlock | Director | Acquired A | 2,946 | $0.00 | $0 | 8,236 | Direct |
| 02 Jun, 2026 | Laura Pastre Jacobs | Director | Acquired A | 2,946 | $0.00 | $0 | 29,953 | Direct |
| 02 Jun, 2026 | Lawrence L Levitt | Director | Acquired A | 2,946 | $0.00 | $0 | 167,902 | Direct |
| 05 May, 2026 | Howard G Berger | President, Ceo | Acquired M | 25,992 | $18.64 | $484.49K | 498,405 | Direct |
| 05 May, 2026 | Howard G Berger | President, Ceo | Disposed M | 25,992 | $0.00 | $0 | 25,992 | Direct |
| 19 Mar, 2026 | Alma Gregory Sorensen | Chief Strategy Officer | Disposed S | 9,554 | $61.84 | $590.82K | 1,214,369 | Direct |
| 19 Mar, 2026 | Alma Gregory Sorensen | Chief Strategy Officer | Disposed S | 5,346 | $62.82 | $335.84K | 1,209,023 | Direct |
| 19 Mar, 2026 | Alma Gregory Sorensen | Chief Strategy Officer | Disposed S | 100 | $63.59 | $6.36K | 1,208,923 | Direct |
| 19 Mar, 2026 | Alma Gregory Sorensen | Chief Strategy Officer | Disposed G | 7,000 | $0.00 | $0 | 1,201,923 | Direct |
| 16 Mar, 2026 | Alma Gregory Sorensen | Chief Strategy Officer | Disposed F | 5,919 | $61.72 | $365.32K | 1,238,923 | Direct |
| 18 Mar, 2026 | Alma Gregory Sorensen | Chief Strategy Officer | Disposed S | 14,200 | $62.12 | $882.10K | 1,224,723 | Direct |
| 18 Mar, 2026 | Alma Gregory Sorensen | Chief Strategy Officer | Disposed S | 800 | $62.72 | $50.18K | 1,223,923 | Direct |
| 10 Mar, 2026 | Alma Gregory Sorensen | Chief Strategy Officer | Acquired M | 3,742 | $0.00 | $0 | 1,185,620 | Direct |
| 10 Mar, 2026 | Alma Gregory Sorensen | Chief Strategy Officer | Acquired M | 4,987 | $0.00 | $0 | 1,190,607 | Direct |