Nasdaq · CIK 0000790526
RDNT RadNet, Inc.
Insider trading from SEC Form 4. Last filing Jun 18, 2026. Close $70.91 on Oct 9, 2026, +37% from the 52-week low and -16% from the high.
RadNet, Inc. (RDNT) has 61 SEC Form 4 filings on file from 11 insiders, the latest filed on Jun 18, 2026. No insider bought or sold on the open market in the last 90 days; rows filed in that time are grants, exercises, tax withholding and other transactions that carry no view on the price.
21 open-market trades have been scored at RDNT. The newest: Alma Gregory Sorensen (Chief Strategy Officer) sold $933k of stock on Mar 19, 2026, filed Mar 23, 2026, scored 39 (weak). The largest of the 21 shown: Alma Gregory Sorensen (EVP, Chief Science Officer) sold $5.7M on May 22, 2025, scored 55 (moderate). 4 insiders sold within 14 days of each other around Sep 16, 2025.
RDNT closed at $70.91 on Oct 9, 2026, 37% above its 52-week low and 16% below its 52-week high.
14 Form 144 notices of planned sales are on file, the latest filed Jun 12, 2025.
Last 90 days
Net insider value
$0
no open-market trades
Buys
0
$0 by 0 insiders
Sells
0
$0 by 0 insiders
Insiders on file
11
with a Form 4 at this company
Price and insider trades, last year
RDNTOct 9, 2026 · close 70.91
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at RadNet, Inc., scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 39Weak | Alma Gregory Sorensen Chief Strategy Officer sell | $933k 15,000 shares | -1% | +32% from low-26% from high | |
| 39Weak | Alma Gregory Sorensen Chief Strategy Officer sell | $932k 15,000 shares | -1% | +31% from low-27% from high | |
| 45Moderate | Stephen M Forthuber Pres & COO-Eastern Operations sell | $3.5M 45,088 shares | -8% | +71% from low-7% from high | |
| 45Moderate | Mital Patel EVP of Fin Planning, CAO sell | $3.9M 50,000 shares | -22% | +68% from low-8% from high | |
| 72Notable | Mark Stolper EVP, Chief Financial Officer sell | $2.6M 35,000 shares | -34% | +62% from low-14% from high | |
| 60Notable | David Jeffrey Katz EVP and Chief Legal Officer sell | $1.0M 14,000 shares | -17% | +62% from low-14% from high | |
| 46Moderate | Cornelis Wesdorp Pres & CEO, Digital Health sell | $36k 500 shares | -1% | +61% from low-15% from high | |
| 56Moderate | Norman R Hames Pres and COO-West Operations sell | $727k 10,000 shares | -4% | +55% from low-17% from high | |
| 46Moderate | Cornelis Wesdorp Pres & CEO, Digital Health sell | $36k 500 shares | -1% | +59% from low-15% from high | |
| 55Moderate | Norman R Hames Pres and COO-West Operations sell | $356k 5,000 shares | -20% | +55% from low-17% from high | |
| 65Notable | Ranjan Jayanathan Chief Information Officer sell | $4.4M 65,598 shares | -32% | +48% from low-21% from high | |
| 50Moderate | Cornelis Wesdorp Pres & CEO, Digital Health sell | $100k 1,500 shares | -3% | +48% from low-21% from high | |
| 60Notable | David Jeffrey Katz EVP and Chief Legal Officer sell | $1.2M 17,000 shares | -16% | +49% from low-21% from high | |
| 48Moderate | Michael N Murdock EVP, Mergers and Acquisitions sell | $646k 11,132 shares | -21% | +26% from low-33% from high | |
| 55Moderate | Alma Gregory Sorensen EVP, Chief Science Officer sell | $5.7M 100,000 shares | -8% | +24% from low-34% from high | |
| 45Moderate | Stephen M Forthuber Pres & COO-Eastern Operations sell | $1.1M 18,820 shares | -3% | +33% from low-29% from high | |
| 44Moderate | Lawrence L Levitt director sell | $305k 5,000 shares | -3% | +33% from low-29% from high | |
| 38Weak | Norman R Hames Pres and COO-West Operations sell | $507k 8,447 shares | -3% | +31% from low-30% from high | |
| 41Moderate | Norman R Hames Pres and COO-West Operations sell | $741k 15,000 shares | -6% | - | |
| 53Moderate | David Jeffrey Katz EVP and Chief Legal Officer sell | $1.0M 12,300 shares | -16% | - | |
| 53Moderate | Ranjan Jayanathan Chief Information Officer sell | $3.1M 38,557 shares | -17% | - |
Planned sales
Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales
| Filed | Seller | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Jun 12, 2025 | Jayanathan Ranjan Officer | 18,708 0.02% of outstanding | $1.1M | Jun 12, 2025 | none |
| Jun 9, 2025 | Katz David Jeffrey Officer | 17,000 0.02% of outstanding | $997k | Jun 9, 2025 | none |
| Jun 5, 2025 | Murdock Michael N Officer | 11,132 0.01% of outstanding | $651k | Jun 5, 2025 | none |
| May 23, 2025 | ALMA GREGORY SORENSEN & KRISTIINA HARRISON SORENSEN Director, Board of Director | 55,000 0.07% of outstanding | $3.1M | May 23, 2025 | $2.6M |
| May 22, 2025 | ALMA GREGORY SORENSEN & KRISTIINA HARRISON SORENSEN Director, Board of Director | 45,000 0.06% of outstanding | $2.6M | May 22, 2025 | none |
| May 16, 2025 | STEPHEN M FORTHUBER Officer | 18,820 0.03% of outstanding | $1.1M | May 16, 2025 | none |
| May 16, 2025 | Lawrence L. Levitt Director | 5,000 0.01% of outstanding | $305k | May 16, 2025 | none |
| May 15, 2025 | Norman R. Hames President & COO-West Operations | 5,536 0.01% of outstanding | $332k | May 15, 2025 | $741k |
| May 15, 2025 | Norman R. Hames Member of Immediate Family of President & COO-West | 2,911 0.00% of outstanding | $175k | May 15, 2025 | $741k |
| Mar 19, 2025 | Norman R. Hames President & COO-West Operations | 15,000 0.02% of outstanding | $741k | Mar 17, 2025 | none |
| Mar 11, 2025 | David Swartz Director | 25,000 0.03% of outstanding | $1.3M | Mar 7, 2025 | none |
| Mar 7, 2025 | Wesdorp Cornelis Officer | 5,000 0.01% of outstanding | $258k | Mar 5, 2025 | none |
| Nov 25, 2024 | Katz David Jeffrey Officer | 12,300 0.02% of outstanding | $1.0M | Nov 25, 2024 | none |
| Nov 14, 2024 | Jayanathan Ranjan Officer | 38,557 0.05% of outstanding | $3.5M | Nov 14, 2024 | none |
Transactions
The newest 50 of 125 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 16, 2026 | Howard G Berger President, CEO | GGift Common Stockindirect: By Spouse | -90 | $0.00 | $0 | 19,910 | Jun 18, 2026 |
| May 5, 2026 | Howard G Berger President, CEO | MOption exercise Common Stock | +25,992 | $18.64 | $484k | 498,405 | May 6, 2026 |
| May 5, 2026 | Howard G Berger President, CEO | MOption exercise Stock Option (right to buy)derivative | -25,992 | $0.00 | $0 | 25,992 | May 6, 2026 |
| Mar 19, 2026 | Alma Gregory Sorensen Chief Strategy Officer | SOpen-market sale Common Stock | -9,554 | $61.84 | $591k | 1,214,369 | Mar 23, 2026 |
| Mar 19, 2026 | Alma Gregory Sorensen Chief Strategy Officer | SOpen-market sale Common Stock | -5,346 | $62.82 | $336k | 1,209,023 | Mar 23, 2026 |
| Mar 19, 2026 | Alma Gregory Sorensen Chief Strategy Officer | SOpen-market sale Common Stock | -100 | $63.59 | $6,359 | 1,208,923 | Mar 23, 2026 |
| Mar 19, 2026 | Alma Gregory Sorensen Chief Strategy Officer | GGift Common Stock | -7,000 | $0.00 | $0 | 1,201,923 | Mar 23, 2026 |
| Mar 16, 2026 | Alma Gregory Sorensen Chief Strategy Officer | FTax withholding Common Stock | -5,919 | $61.72 | $365k | 1,238,923 | Mar 18, 2026 |
| Mar 18, 2026 | Alma Gregory Sorensen Chief Strategy Officer | SOpen-market sale Common Stock | -14,200 | $62.12 | $882k | 1,224,723 | Mar 18, 2026 |
| Mar 18, 2026 | Alma Gregory Sorensen Chief Strategy Officer | SOpen-market sale Common Stock | -800 | $62.72 | $50k | 1,223,923 | Mar 18, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Common Stock | +3,742 | $0.00 | $0 | 1,185,620 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Common Stock | +4,987 | $0.00 | $0 | 1,190,607 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Common Stock | +6,237 | $0.00 | $0 | 1,196,844 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Common Stock | +7,481 | $0.00 | $0 | 1,204,325 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Common Stock | +8,727 | $0.00 | $0 | 1,213,052 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Common Stock | +12,466 | $0.00 | $0 | 1,225,518 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Common Stock | +2,493 | $0.00 | $0 | 1,228,011 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Common Stock | +16,831 | $0.00 | $0 | 1,244,842 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Employee Stock Option (right to buy)derivative | -3,742 | $0.00 | $0 | 0 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Employee Stock Option (right to buy)derivative | -4,987 | $0.00 | $0 | 0 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Employee Stock Option (right to buy)derivative | -6,237 | $0.00 | $0 | 0 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Employee Stock Option (right to buy)derivative | -7,481 | $0.00 | $0 | 0 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Employee Stock Option (right to buy)derivative | -8,727 | $0.00 | $0 | 0 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Employee Stock Option (right to buy)derivative | -12,466 | $0.00 | $0 | 0 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Employee Stock Option (right to buy)derivative | -2,493 | $0.00 | $0 | 0 | Mar 12, 2026 |
| Mar 10, 2026 | Alma Gregory Sorensen Chief Strategy Officer | MOption exercise Employee Stock Option (right to buy)derivative | -16,831 | $0.00 | $0 | 0 | Mar 12, 2026 |
| Mar 3, 2026 | Michael N Murdock EVP, Mergers and Acquisitions | AGrant or award Common Stock | +6,613 | $0.00 | $0 | 46,697 | Mar 5, 2026 |
| Mar 3, 2026 | Mital Patel EVP of Fin Planning, CAO | AGrant or award Common Stock | +20,667 | $0.00 | $0 | 200,175 | Mar 5, 2026 |
| Mar 3, 2026 | Alma Gregory Sorensen EVP, Chief Science Officer | AGrant or award Common Stock | +16,533 | $0.00 | $0 | 1,181,878 | Mar 5, 2026 |
| Mar 3, 2026 | Mark Stolper EVP, Chief Financial Officer | AGrant or award Common Stock | +18,228 | $0.00 | $0 | 121,943 | Mar 5, 2026 |
| Mar 3, 2026 | Cornelis Wesdorp Pres & CEO, Digital Health | AGrant or award Common Stock | +20,330 | $0.00 | $0 | 73,825 | Mar 5, 2026 |
| Mar 3, 2026 | Howard G Berger President, CEO | AGrant or award Common Stock | +124,001 | $0.00 | $0 | 472,413 | Mar 5, 2026 |
| Mar 3, 2026 | Stephen M Forthuber Pres & COO-Eastern Operations | AGrant or award Common Stock | +22,045 | $0.00 | $0 | 551,266 | Mar 5, 2026 |
| Mar 3, 2026 | Norman R Hames Pres and COO-West Operations | AGrant or award Common Stock | +22,045 | $0.00 | $0 | 261,228 | Mar 5, 2026 |
| Mar 3, 2026 | David Jeffrey Katz EVP and Chief Legal Officer | AGrant or award Common Stock | +19,289 | $0.00 | $0 | 90,866 | Mar 5, 2026 |
| Mar 3, 2026 | Norman R Hames Pres and COO-West Operations | AGrant or award Common Stockindirect: By Spouse | +3,100 | $0.00 | $0 | 22,989 | Mar 5, 2026 |
| Dec 10, 2025 | David Jeffrey Katz EVP and Chief Legal Officer | MOption exercise Common Stock | +3,396 | $29.44 | $100k | 71,577 | Dec 12, 2025 |
| Dec 10, 2025 | Mark Stolper EVP, Chief Financial Officer | MOption exercise Common Stock | +35,703 | $6.07 | $217k | 103,715 | Dec 12, 2025 |
| Dec 10, 2025 | David Jeffrey Katz EVP and Chief Legal Officer | MOption exercise Employee Stock Option (right to buy)derivative | -3,396 | $0.00 | $0 | 15,556 | Dec 12, 2025 |
| Dec 10, 2025 | Mark Stolper EVP, Chief Financial Officer | MOption exercise Employee Stock Option (right to buy)derivative | -35,703 | $0.00 | $0 | 0 | Dec 12, 2025 |
| Dec 5, 2025 | Stephen M Forthuber Pres & COO-Eastern Operations | SOpen-market sale Common Stock | -31,790 | $77.99 | $2.5M | 542,519 | Dec 9, 2025 |
| Dec 5, 2025 | Stephen M Forthuber Pres & COO-Eastern Operations | SOpen-market sale Common Stock | -11,598 | $79.06 | $917k | 530,921 | Dec 9, 2025 |
| Dec 5, 2025 | Stephen M Forthuber Pres & COO-Eastern Operations | SOpen-market sale Common Stock | -1,700 | $79.77 | $136k | 529,221 | Dec 9, 2025 |
| Dec 3, 2025 | Mital Patel EVP of Fin Planning, CAO | GGift Common Stock | -630 | $0.00 | $0 | 179,508 | Dec 5, 2025 |
| Dec 3, 2025 | Stephen M Forthuber Pres & COO-Eastern Operations | MOption exercise Common Stock | +39,127 | $6.07 | $238k | 574,309 | Dec 3, 2025 |
| Dec 3, 2025 | Stephen M Forthuber Pres & COO-Eastern Operations | MOption exercise Employee Stock Option (right to buy)derivative | -39,127 | $0.00 | $0 | 0 | Dec 3, 2025 |
| Nov 25, 2025 | Lawrence L Levitt director | GGift Common Stock | -2,700 | $0.00 | $0 | 164,956 | Nov 28, 2025 |
| Nov 19, 2025 | Howard G Berger President, CEO | MOption exercise Common Stock | +103,969 | $18.64 | $1.9M | 322,420 | Nov 21, 2025 |
| Nov 19, 2025 | Howard G Berger President, CEO | MOption exercise Common Stock | +25,992 | $18.64 | $484k | 348,412 | Nov 21, 2025 |
| Nov 19, 2025 | Howard G Berger President, CEO | MOption exercise Stock Option (right to buy)derivative | -103,969 | $0.00 | $0 | 0 | Nov 21, 2025 |
50 of 125 rows shown.
Insiders
Everyone who has filed a Form 4 here.
- Howard G BergerPresident, CEO
- Stephen M ForthuberPres & COO-Eastern Operations
- Norman R HamesPres and COO-West Operations
- Ranjan JayanathanChief Information Officer
- David Jeffrey KatzEVP and Chief Legal Officer
- Lawrence L Levittdirector
- Michael N MurdockEVP, Mergers and Acquisitions
- Mital PatelEVP of Fin Planning, CAO
- Mark StolperEVP, Chief Financial Officer
- Alma Gregory SorensenChief Strategy Officer
- Cornelis WesdorpPres & CEO, Digital Health
Questions about RDNT
Answered from the filings on this page, as of the latest one.
Are insiders buying RDNT?
No. In the last 90 days no insider at RadNet, Inc. bought or sold shares on the open market according to SEC Form 4 filings. The rows on file from that period are grants, exercises, tax withholding or other transactions, which carry no view on the price.
Who was the last insider to trade RDNT on the open market?
Alma Gregory Sorensen (Chief Strategy Officer) sold $933k of RDNT on Mar 19, 2026 and filed the Form 4 on Mar 23, 2026. InsiderTell scored 39 (weak).
How many insiders file Form 4 at RadNet, Inc.?
11 people have filed a Form 4 at RadNet, Inc., among them Howard G Berger (President, CEO), Stephen M Forthuber (Pres & COO-Eastern Operations), Norman R Hames (Pres and COO-West Operations). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.