Radnet, Inc.
A U.S. outpatient diagnostic imaging company, RadNet operates roughly four hundred multi-modality centers across nine states, where patients get MRIs, CT scans, PET scans, and mammograms. Founded in 1981 by six Los Angeles doctors (including current CEO Howard Berger), it began by billing for radiology groups before opening its first imaging center across from Cedars-Sinai. Its name blends "radiology" and "network," and its DeepHealth arm builds AI tools for reading scans, born from a 2020 acquisition of a Cambridge mammography-AI startup.
Granted 19.4K
Granted 111.2K · Sold 145.0K
Granted 218.3K · Sold 267.0K
Granted 168.1K · Sold 158.0K
Granted 498.4K
Granted 18.6K · Sold 52.7K
Granted 166.8K · Sold 90.0K
Granted 18.6K · Sold 25.0K
Granted 54.0K · Sold 104.2K
Granted 90.9K · Sold 60.0K
Granted 110.6K · Sold 59.7K
Granted 81.3K · Sold 12.3K
Granted 55.0K · Sold 46.2K
Granted 18.6K
Granted 20.7K · Sold 18.3K
Granted 10.7K · Sold 21.0K
Granted 18.6K · Sold 14.3K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Sorenson Alma GregoryEVP, Chief Science Officer, Director · 1 transaction | — | 2.52Mas of Jan 2024 | 19.4K | — | — |
| Sorensen Alma GregoryChief Strategy Officer, Director · 24 transactions | — | 1.20M | 111.2K | — | 145.0K |
| Hames Norman RPres and COO-West Operations · 42 transactions | — | 543.3K | 218.3K | — | 267.0K |
| Forthuber Stephen MPres & CEO-Eastern Operations · 18 transactions | +6% | 527.1K | 168.1K | — | 158.0K |
| Berger Howard GPresident, CEO, Director · 12 transactions | — | 518.3K | 498.4K | — | — |
| Swartz David LDirector · 9 transactions | -9.2% | 214.0K | 18.6K | — | 52.7K |
| Patel MitalEVP of Fin Planning, CAO · 22 transactions | +14% | 200.2K | 166.8K | — | 90.0K |
| Levitt Lawrence LDirector · 13 transactions | -16.7% | 167.9K | 18.6K | — | 25.0K |
| Jayanathan RanjanChief Information Officer · 5 transactions | -25.8% | 138.2Kas of Aug 2025 | 54.0K | — | 104.2K |
| Stolper MarkEVP, Chief Financial Officer · 9 transactions | +31.7% | 121.9K | 90.9K | — | 60.0K |
| Katz David JeffreyEVP and Chief Legal Officer · 17 transactions | +96.8% | 90.9K | 110.6K | — | 59.7K |
| Wesdorp CornelisPres & CEO, Digital Health · 9 transactions | — | 69.1K | 81.3K | — | 12.3K |
| Murdock Michael NEVP, Mergers and Acquisitions · 17 transactions | -29.2% | 46.7K | 55.0K | — | 46.2K |
| Jacobs Laura PastreDirector · 5 transactions | +163.2% | 30.0K | 18.6K | — | — |
| Gordon Christine NayomaDirector · 10 transactions | +28% | 10.9Kas of Jun 2024 | 20.7K | — | 18.3K |
| Villigerwilson Ruth LouisaDirector · 4 transactions | -51% | 9.9Kas of Mar 2023 | 10.7K | — | 21.0K |
| Spurlock Gregory E.Director · 7 transactions | +106% | 8.2K | 18.6K | — | 14.3K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -1.07M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.