RDNTNasdaqServices-Medical LaboratoriesFiscal year ends December 31
RadNet, Inc.
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 10, 2026
$69.27+0.47 (+0.68%)
Close on Oct 19, 2026
- Market cap
- $5.45B
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
100.0%
82M of 79M shares
Institutional holders
328
42 new, 50 sold out
Net institutional buying
3M
In Q2 2026
Insider trades, 12 months
0 buys · 15 sales
Net sold $12.28M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 9,250,663 | 12.00% | 13G (passive) amendment | Sep 30, 2025 |
| RTW Investments, LP | 4,846,958 | 6.20% | 13G (passive) amendment | Jun 30, 2026 |
| Sandy Nyholm Kaminsky, as trustee of the HFB Heirs' Trust II (formerly HFB Heirs' Family Trust) | 4,551,753 | 6.16% | 13G (passive) amendment | Sep 30, 2024 |
| T. Rowe Price Associates, Inc. | 4,154,837 | 5.40% | 13G (passive) | Mar 31, 2026 |
| Vanguard Portfolio Management | 3,952,160 | 5.09% | 13G (passive) | Mar 31, 2026 |
| Roderick Wong | 3,938,500 | 5.10% | 13G (passive) | Dec 31, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of RDNT | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 10,957,808 | 13.92% | $675.77M | +922,074 | 0.01% |
| Rtw Investments, LP | 4,846,958 | 6.16% | $298.91M | +561,958 | 2.55% |
| Price T Rowe Associates Inc /Md/ | 4,501,195 | 5.72% | $277.59K | +346,332 | 0.03% |
| Vanguard Portfolio Management LLC | 4,066,931 | 5.17% | $250.81M | +167,804 | 0.01% |
| Vanguard Capital Management LLC | 3,193,565 | 4.06% | $196.95M | +82,553 | 0.00% |
| Beck Mack & Oliver LLC | 3,163,592 | 4.02% | $195.10M | −2,600 | 3.80% |
| State Street Corp | 2,842,457 | 3.61% | $175.19M | +190,859 | 0.01% |
| Geode Capital Management, LLC | 1,858,508 | 2.36% | $114.64M | +134,901 | 0.01% |
| Invesco Ltd. | 1,641,292 | 2.09% | $101.22M | +7,797 | 0.01% |
| American Century Companies Inc | 1,618,424 | 2.06% | $99.81M | +716,232 | 0.04% |
| Clearbridge Investments, LLC | 1,546,652 | 1.97% | $95.38M | +268,112 | 0.08% |
| Dimensional Fund Advisors LP | 1,491,040 | 1.89% | $91.94M | +112,037 | 0.02% |
| Hood River Capital Management LLC | 1,456,205 | 1.85% | $89.80M | +44,708 | 0.65% |
| Jb Capital Partners LP | 1,424,061 | 1.81% | $87.82M | – | 13.59% |
| Bamco Inc /Ny/ | 1,260,992 | 1.60% | $77.77M | +450,926 | 0.12% |
| Van Berkom & Associates Inc. | 1,193,068 | 1.52% | $73.58K | −864,104 | 2.37% |
| Goldman Sachs Group Inc | 1,178,372 | 1.50% | $72.67M | −11,903 | 0.01% |
| Alyeska Investment Group, L.P. | 1,171,721 | 1.49% | $72.26M | −137,587 | 0.19% |
| Penserra Capital Management LLC | 1,143,622 | 1.45% | $70.53K | +598,148 | 0.54% |
| Defiance ETFs, LLC | 1,143,622 | 1.45% | $75.04M | +598,148 | 1.02% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 328 | 82M | 100.0% | 42 / 128 | 114 / 50 | 10M | 6M |
| Q1 2026 | 340 | 78M | 99.4% | 52 / 136 | 103 / 48 | 15M | 6M |
| Q4 2025 | 342 | 77M | 98.0% | 53 / 123 | 114 / 32 | 8M | 5M |
| Q3 2025 | 328 | 74M | 94.3% | 43 / 145 | 95 / 40 | 9M | 6M |
| Q2 2025 | 328 | 71M | 90.8% | 47 / 154 | 87 / 25 | 6M | 4M |
| Q1 2025 | 307 | 69M | 87.7% | 45 / 124 | 104 / 65 | 11M | 6M |
| Q4 2024 | 330 | 64M | 81.7% | 54 / 115 | 116 / 21 | 6M | 5M |
| Q3 2024 | 303 | 64M | 81.1% | 55 / 104 | 99 / 26 | 16M | 4M |
| Q2 2024 | 277 | 61M | 77.8% | 47 / 97 | 96 / 45 | 7M | 6M |
| Q1 2024 | 277 | 61M | 77.4% | 79 / 91 | 72 / 15 | 11M | 4M |
| Q4 2023 | 214 | 54M | 68.6% | 39 / 69 | 76 / 14 | 5M | 4M |
| Q3 2023 | 191 | 53M | 67.1% | 40 / 76 | 48 / 30 | 7M | 5M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of RDNT | Value | % of fund | As of |
|---|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 3,513,849 | 4.47% | $216.70M | 0.19% | Jun 30, 2026 |
| Vanguard Total Stock Market Index Fund | 2,252,511 | 2.86% | $138.91M | 0.01% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 1,836,559 | 2.33% | $113.26M | 0.14% | Jun 30, 2026 |
| T. Rowe Price Mid-Cap Value Fund, Inc. | 1,756,598 | 2.23% | $108.33M | 0.66% | Jun 30, 2026 |
| Vanguard Small-Cap Index Fund | 1,623,822 | 2.06% | $100.14M | 0.05% | Jun 30, 2026 |
| Defiance Quantum ETF | 1,143,622 | 1.45% | $70.53M | 1.13% | Jun 30, 2026 |
| Baron Small Cap Fund | 1,000,000 | 1.27% | $61.67M | 2.17% | Jun 30, 2026 |
| Small Cap Growth Fund | 981,113 | 1.25% | $62.58M | 1.12% | Jul 31, 2026 |
| Vanguard Small-Cap Growth Index Fund | 935,198 | 1.19% | $57.67M | 0.12% | Jun 30, 2026 |
| Vanguard Explorer Fund | 923,146 | 1.17% | $58.88M | 0.27% | Jul 31, 2026 |
| Vanguard Extended Market Index Fund | 812,359 | 1.03% | $50.10M | 0.05% | Jun 30, 2026 |
| Invesco Discovery Fund | 785,552 | 1.00% | $43.62M | 0.56% | May 31, 2026 |
| Fidelity Small Cap Index Fund | 782,110 | 0.99% | $49.88M | 0.15% | Jul 31, 2026 |
| Hood River Small-Cap Growth Fund | 728,645 | 0.93% | $44.94M | 0.68% | Jun 30, 2026 |
| iShares Russell 2000 Growth ETF | 660,604 | 0.84% | $40.74M | 0.26% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Howard G. Berger | President, CEO, Director | 518,315 | 0.66% | Jun 18, 2026 |
| Alma Gregory Sorensen | Chief Strategy Officer, Director | 1,218,351 | 1.55% | Mar 23, 2026 |
| Cornelis Wesdorp | Pres & CEO, Digital Health | 69,075 | 0.09% | Jun 18, 2026 |
| Stephen M. Forthuber | Pres & CEO-Eastern Operations | 527,052 | 0.67% | Jun 16, 2026 |
| Mital Patel | EVP of Fin Planning, CAO | 200,175 | 0.25% | Mar 5, 2026 |
| Norman R. Hames | Pres and COO-West Operations | 284,217 | 0.36% | Mar 5, 2026 |
| Michael N. Murdock | EVP, Mergers and Acquisitions | 46,697 | 0.06% | Mar 5, 2026 |
| Mark Stolper | EVP, Chief Financial Officer | 121,943 | 0.15% | Mar 5, 2026 |
| David Jeffrey Katz | EVP and Chief Legal Officer | 90,866 | 0.12% | Mar 5, 2026 |
| Ranjan Jayanathan | Chief Information Officer | 138,198 | 0.18% | Aug 21, 2025 |
| David L. Swartz | Director | 214,032 | 0.27% | Jun 22, 2026 |
| Lawrence L. Levitt | Director | 167,902 | 0.21% | Jun 3, 2026 |
| Laura Pastre Jacobs | Director | 29,953 | 0.04% | Jun 3, 2026 |
| Gregory E. Spurlock | Director | 8,236 | 0.01% | Jun 3, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| David L. Swartz Director | Jun 18, 2026 | Sale | −2,699 | $53.89 | $145.45K | 177,013 |
| Howard G. Berger President, CEO, Director | Jun 16, 2026 | Gift | −90 | – | – | 19,910 |
| Cornelis Wesdorp Pres & CEO, Digital Health | Jun 16, 2026 | Sale | −4,750 | $58.11 | $276.02K | 69,075 |
| Stephen M. Forthuber Pres & CEO-Eastern Operations | Jun 15, 2026 | Sale | −24,214 | $57.79 | $1.40M | 527,052 |
| Stephen M. Forthuber Pres & CEO-Eastern Operations | Jun 15, 2026 | Sale | −19,853 | $58.61 | $1.16M | 507,199 |
| Lawrence L. Levitt Director | Jun 2, 2026 | Award | +2,946 | – | – | 167,902 |
| Laura Pastre Jacobs Director | Jun 2, 2026 | Award | +2,946 | – | – | 29,953 |
| Gregory E. Spurlock Director | Jun 2, 2026 | Award | +2,946 | – | – | 8,236 |
| David L. Swartz Director | Jun 2, 2026 | Award | +2,946 | – | – | 179,712 |
| Howard G. Berger President, CEO, Director | May 5, 2026 | Option exercise | +25,992 | $18.64 | $484.49K | 498,405 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 19, 2026 | Gift | −7,000 | – | – | 1,201,923 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 19, 2026 | Sale | −9,554 | $61.84 | $590.82K | 1,214,369 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 19, 2026 | Sale | −100 | $63.59 | $6.36K | 1,208,923 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 19, 2026 | Sale | −5,346 | $62.82 | $335.84K | 1,209,023 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 18, 2026 | Sale | −14,200 | $62.12 | $882.10K | 1,224,723 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 18, 2026 | Sale | −800 | $62.72 | $50.18K | 1,223,923 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 16, 2026 | Tax withholding | −5,919 | $61.72 | $365.32K | 1,238,923 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 10, 2026 | Option exercise | +7,481 | – | – | 1,204,325 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 10, 2026 | Option exercise | +2,493 | – | – | 1,228,011 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 10, 2026 | Option exercise | +12,466 | – | – | 1,225,518 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 10, 2026 | Option exercise | +8,727 | – | – | 1,213,052 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 10, 2026 | Option exercise | +16,831 | – | – | 1,244,842 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 10, 2026 | Option exercise | +6,237 | – | – | 1,196,844 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 10, 2026 | Option exercise | +4,987 | – | – | 1,190,607 |
| Alma Gregory Sorensen Chief Strategy Officer, Director | Mar 10, 2026 | Option exercise | +3,742 | – | – | 1,185,620 |
| Mital Patel EVP of Fin Planning, CAO | Mar 3, 2026 | Award | +20,667 | – | – | 200,175 |
| Michael N. Murdock EVP, Mergers and Acquisitions | Mar 3, 2026 | Award | +6,613 | – | – | 46,697 |
| David Jeffrey Katz EVP and Chief Legal Officer | Mar 3, 2026 | Award | +19,289 | – | – | 90,866 |
| Stephen M. Forthuber Pres & COO-Eastern Operations | Mar 3, 2026 | Award | +22,045 | – | – | 551,266 |
| Cornelis Wesdorp Pres & CEO, Digital Health | Mar 3, 2026 | Award | +20,330 | – | – | 73,825 |
| Mark Stolper EVP, Chief Financial Officer | Mar 3, 2026 | Award | +18,228 | – | – | 121,943 |
| Alma Gregory Sorensen EVP, Chief Science Officer, Director | Mar 3, 2026 | Award | +16,533 | – | – | 1,181,878 |
| Howard G. Berger President, CEO, Director | Mar 3, 2026 | Award | +124,001 | – | – | 472,413 |
| Norman R. Hames Pres and COO-West Operations | Mar 3, 2026 | Award | +3,100 | – | – | 22,989 |
| Norman R. Hames Pres and COO-West Operations | Mar 3, 2026 | Award | +22,045 | – | – | 261,228 |
| Mark Stolper EVP, Chief Financial Officer | Dec 10, 2025 | Option exercise | +35,703 | $6.07 | $216.72K | 103,715 |
| David Jeffrey Katz EVP and Chief Legal Officer | Dec 10, 2025 | Option exercise | +3,396 | $29.44 | $99.98K | 71,577 |
| Stephen M. Forthuber Pres & COO-Eastern Operations | Dec 5, 2025 | Sale | −1,700 | $79.77 | $135.61K | 529,221 |
| Stephen M. Forthuber Pres & COO-Eastern Operations | Dec 5, 2025 | Sale | −11,598 | $79.06 | $916.94K | 530,921 |
| Stephen M. Forthuber Pres & COO-Eastern Operations | Dec 5, 2025 | Sale | −31,790 | $77.99 | $2.48M | 542,519 |
| Mital Patel EVP of Fin Planning, CAO | Dec 3, 2025 | Gift | −630 | – | – | 179,508 |
| Stephen M. Forthuber Pres & COO-Eastern Operations | Dec 3, 2025 | Option exercise | +39,127 | $6.07 | $237.50K | 574,309 |
| Lawrence L. Levitt Director | Nov 25, 2025 | Gift | −2,700 | – | – | 164,956 |
| Howard G. Berger President, CEO, Director | Nov 19, 2025 | Option exercise | +25,992 | $18.64 | $484.49K | 348,412 |
| Howard G. Berger President, CEO, Director | Nov 19, 2025 | Option exercise | +103,969 | $18.64 | $1.94M | 322,420 |
| Mital Patel EVP of Fin Planning, CAO | Nov 19, 2025 | Sale | −15,080 | $80.05 | $1.21M | 180,138 |
| Mital Patel EVP of Fin Planning, CAO | Nov 18, 2025 | Sale | −9,920 | $80.00 | $793.60K | 195,218 |
| Mital Patel EVP of Fin Planning, CAO | Nov 17, 2025 | Sale | −25,000 | $76.06 | $1.90M | 205,138 |
| Michael N. Murdock EVP, Mergers and Acquisitions | Nov 13, 2025 | Gift | −3,000 | – | – | 40,084 |
| Mark Stolper EVP, Chief Financial Officer | Sep 16, 2025 | Sale | −35,000 | $73.89 | $2.59M | 68,012 |
| David Jeffrey Katz EVP and Chief Legal Officer | Sep 16, 2025 | Sale | −14,000 | $74.44 | $1.04M | 68,181 |
| Cornelis Wesdorp Pres & CEO, Digital Health | Sep 11, 2025 | Sale | −500 | $72.13 | $36.07K | 53,495 |
| David Jeffrey Katz EVP and Chief Legal Officer | Sep 11, 2025 | Gift | −4,593 | – | – | 82,181 |
| Norman R. Hames Pres and COO-West Operations | Sep 10, 2025 | Sale | −10,000 | $72.74 | $727.40K | 239,183 |
| Cornelis Wesdorp Pres & CEO, Digital Health | Sep 9, 2025 | Sale | −500 | $71.99 | $36.00K | 53,995 |
| Norman R. Hames Pres and COO-West Operations | Aug 27, 2025 | Sale | −5,000 | $71.10 | $355.50K | 19,889 |
| Cornelis Wesdorp Pres & CEO, Digital Health | Aug 19, 2025 | Sale | −1,500 | $66.98 | $100.47K | 54,495 |
| Ranjan Jayanathan Chief Information Officer | Aug 19, 2025 | Sale | −65,598 | $67.50 | $4.43M | 138,198 |
| David Jeffrey Katz EVP and Chief Legal Officer | Aug 13, 2025 | Sale | −17,000 | $68.31 | $1.16M | 86,774 |
| Alma Gregory Sorensen EVP, Chief Science Officer, Director | Jun 17, 2025 | Gift | −5,600 | – | – | 1,165,345 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Swartz David Director | Jun 18, 2026 | 2,699 | $145.45K | Jun 18, 2026 | Restricted Stock |
| Wesdorp Cornelis Officer | Jun 16, 2026 | 4,750 | $269.37K | Jun 16, 2026 | Compensation |
| M. Forthuber Stephen Officer | Jun 15, 2026 | 44,067 | $2.56M | Jun 15, 2026 | Restricted Stock Vesting Under a Registered Plan |
| Gregory Sorensen &kristiina Harrison Sorensen Alma Director, Board of Director | Mar 19, 2026 | 15,000 | $933.01K | Mar 19, 2026 | Restricted stock vesting under a registered plan |
| Gregory Sorensen Alma Director, Board of Director | Mar 18, 2026 | 5,919 | $379.41K | Mar 16, 2026 | Restricted stock vesting under a registered plan |
| Gregory Sorensen &kristiina Harrison Sorensen Alma Director, Board of Director | Mar 18, 2026 | 15,000 | $932.26K | Mar 18, 2026 | Restricted stock vesting under a registered plan |
| M. Forthuber Stephen Officer | Dec 5, 2025 | 45,088 | $3.53M | Dec 5, 2025 | Restricted stock vesting under a registered plan |
| Mital Patel Officer | Nov 19, 2025 | 25,000 | $2.70M | Nov 19, 2025 | RSU |
| Mital Patel Officer | Nov 19, 2025 | 9,920 | $793.63K | Nov 18, 2025 | RSU |
| Mital Patel Officer | Nov 19, 2025 | 25,000 | $1.90M | Nov 17, 2025 | RSU |
| Jeffrey Katz David Officer | Sep 16, 2025 | 14,000 | $1.05M | Sep 16, 2025 | Stock Award |
| Mark Stolper Officer | Sep 15, 2025 | 35,000 | $2.59M | Sep 15, 2025 | Employee Compensation |
| Wesdorp Cornelis Officer | Sep 11, 2025 | 500 | $36.87K | Sep 11, 2025 | Compensation |
| Norman R. Hames Officer | Sep 10, 2025 | 10,000 | $726.89K | Sep 10, 2025 | RSU |
| Wesdorp Cornelis Officer | Sep 9, 2025 | 2,000 | $145.46K | Aug 19, 2025 | Compensation |