Updated Jul 16, 2026 · Last SEC filing 2026-06-22
RadNet, Inc. (RDNT) has filed 9 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-22. 4 Form 8-K material event filings were reported by RDNT in the last 90 days. 3 Form 144 notices of proposed sale were filed for RDNT stock. InsiderAlpha tracks every RDNT SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0000790526 |
|---|
| Form 4 filings (90d) | 9 |
|---|---|
| Form 8-K filings (90d) | 4 |
| Form 144 notices (90d) | 3 |
| Latest Form 4 filing | 2026-06-22 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| SWARTZ DAVID L | Director | S — Open-market sale | 2.7K | $53.89 | $145K | SEC | |
| Wesdorp Cornelis | Pres & CEO, Digital Health | S — Open-market sale | 4.8K | $58.11 | $276K | SEC | |
| Berger Howard G | President, CEO | G — Bona-fide gift | 90 | $0.00 | — | SEC | |
| Forthuber Stephen M | Pres & CEO-Eastern Operations | S — Open-market sale | 19.9K | $58.61 | $1.16M | SEC | |
| Forthuber Stephen M | Pres & CEO-Eastern Operations | S — Open-market sale | 24.2K | $57.79 | $1.40M | SEC | |
| Levitt Lawrence L | Director | A — Grant or award | 2.9K | $0.00 | — | SEC | |
| SWARTZ DAVID L | Director | A — Grant or award | 2.9K | $0.00 | — | SEC | |
| Jacobs Laura Pastre | Director | A — Grant or award | 2.9K | $0.00 | — | SEC | |
| SPURLOCK GREGORY E. | Director | A — Grant or award | 2.9K | $0.00 | — | SEC | |
| Berger Howard G | President, CEO | M — Option exercise | 26.0K | $18.64 | $484K | SEC | |
| Sorensen Alma Gregory | Chief Strategy Officer | S — Open-market sale | 5.3K | $62.82 | $336K | SEC | |
| Sorensen Alma Gregory | Chief Strategy Officer | S — Open-market sale | 100 | $63.59 | $6K | SEC | |
| Sorensen Alma Gregory | Chief Strategy Officer | G — Bona-fide gift | 7.0K | $0.00 | — | SEC | |
| Sorensen Alma Gregory | Chief Strategy Officer | S — Open-market sale | 9.6K | $61.84 | $591K | SEC | |
| Sorensen Alma Gregory | Chief Strategy Officer | S — Open-market sale | 800 | $62.72 | $50K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for RadNet, Inc. (RDNT). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Berger Howard G | 3 | $484K |
| Forthuber Stephen M | 2 | $2.56M |
| SWARTZ DAVID L | 2 | $145K |
| Jacobs Laura Pastre | 1 | — |
| Levitt Lawrence L | 1 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in RDNT insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
Open the live RDNT dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.