RDNT
RadNet, Inc.
Services-Medical LaboratoriesNasdaqLarge accelerated filer
Total Trades
44
Buys
0
Sells
41
Largest Trade
N/A
Insiders
14
Institutional Funds
288
Inst. Value
$1M+
Activist Filings
11
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Forthuber Stephen M | Pres & COO-Eastern… | SELL | $1M+ | 45K | $78.33 | Dec 9, 2025 |
| Patel Mital | EVP of Fin Planning | SELL | $1M+ | 50K | $78.05 | Nov 19, 2025 |
| STOLPER MARK | CFO | SELL | $1M+ | 35K | $73.89 | Sep 18, 2025 |
| Katz David Jeffrey | EVP and Chief Lega… | SELL | $1M+ | 14K | $74.44 | Sep 17, 2025 |
| Wesdorp Cornelis | Pres & CEO | SELL | $15K–$50K | 500 | $72.13 | Sep 15, 2025 |
| HAMES NORMAN R | Pres and COO-West … | SELL | $500K+ | 10K | $72.74 | Sep 12, 2025 |
| Wesdorp Cornelis | Pres & CEO | SELL | $15K–$50K | 500 | $71.99 | Sep 10, 2025 |
| HAMES NORMAN R | Pres and COO-West … | SELL | $100K–$500K | 5K | $71.10 | Aug 29, 2025 |
| Murdock Michael N | EVP | SELL | $500K+ | 11K | $58.05 | Jun 6, 2025 |
| Sorensen Alma Gregory | EVP | SELL | $1M+ | 100K | $56.74 | May 27, 2025 |
| Forthuber Stephen M | Pres & COO-Eastern… | SELL | $1M+ | 19K | $60.34 | May 20, 2025 |
| Forthuber Stephen M | Pres & COO-Eastern… | EXERCISE | N/A | 3K | — | May 20, 2025 |
| Levitt Lawrence L | Director | SELL | $100K–$500K | 5K | $61.09 | May 20, 2025 |
| HAMES NORMAN R | Pres and COO-West … | SELL | $500K+ | 8K | $60.00 | May 16, 2025 |
| HAMES NORMAN R | Pres and COO-West … | EXERCISE | N/A | 3K | — | May 16, 2025 |
| HAMES NORMAN R | Pres and COO-West … | SELL | $500K+ | 15K | $49.42 | Mar 20, 2025 |
| SWARTZ DAVID L | Director | SELL | $1M+ | 25K | $50.84 | Mar 12, 2025 |
| Katz David Jeffrey | EVP and Chief Lega… | SELL | $1M+ | 12K | $81.65 | Nov 27, 2024 |
| Jayanathan Ranjan | Chief Information … | SELL | $1M+ | 39K | $80.00 | Nov 21, 2024 |
| Murdock Michael N | EVP | SELL | $500K+ | 15K | $62.78 | Aug 22, 2024 |
| Patel Mital | EVP | SELL | $1M+ | 40K | $59.26 | Jun 20, 2024 |
| SPURLOCK GREGORY E. | Director | SELL | $500K+ | 14K | $59.75 | Jun 18, 2024 |
| Murdock Michael N | EVP | SELL | $500K+ | 10K | $62.51 | Jun 14, 2024 |
| Levitt Lawrence L | Director | SELL | $100K–$500K | 4K | $57.77 | Jun 14, 2024 |
| Sorensen Alma Gregory | EVP | SELL | $500K+ | 15K | $61.97 | Jun 13, 2024 |
| Forthuber Stephen M | Pres & COO-Eastern… | SELL | $1M+ | 40K | $62.33 | Jun 13, 2024 |
| SWARTZ DAVID L | Director | SELL | $1M+ | 25K | $60.75 | Jun 12, 2024 |
| STOLPER MARK | CFO | SELL | $1M+ | 25K | $61.27 | Jun 12, 2024 |
| Levitt Lawrence L | Director | SELL | $500K+ | 16K | $60.85 | Jun 12, 2024 |
| HAMES NORMAN R | Pres and COO-West … | SELL | $1M+ | 74K | $61.75 | Jun 12, 2024 |
| Katz David Jeffrey | EVP and Chief Lega… | SELL | $1M+ | 16K | $61.26 | Jun 11, 2024 |
| Gordon Christine Nayoma | Director | SELL | $100K–$500K | 5K | $61.21 | Jun 11, 2024 |
| Gordon Christine Nayoma | Director | SELL | $50K–$100K | 3K | $32.40 | Nov 28, 2023 |
| HAMES NORMAN R | Pres and COO-West … | SELL | $1M+ | 45K | $31.05 | Jun 8, 2023 |
| HAMES NORMAN R | Pres and COO-West … | EXERCISE | $100K–$500K | 58K | $6.15 | Jun 6, 2023 |
| HAMES NORMAN R | Pres and COO-West … | SELL | $100K–$500K | 10K | $30.13 | Jun 6, 2023 |
| Gordon Christine Nayoma | Director | SELL | $100K–$500K | 5K | $28.34 | May 25, 2023 |
| Forthuber Stephen M | Pres & COO-Eastern… | SELL | $100K–$500K | 10K | $23.02 | Mar 17, 2023 |
| Villigerwilson Ruth Louisa | Director | SELL | $100K–$500K | 18K | $24.94 | Mar 6, 2023 |
| Gordon Christine Nayoma | Director | SELL | $50K–$100K | 3K | $19.57 | Dec 20, 2022 |
| HAMES NORMAN R | Pres and COO-West … | SELL | $50K–$100K | 5K | $19.45 | Dec 20, 2022 |
| Gordon Christine Nayoma | Director | SELL | $50K–$100K | 3K | $20.57 | Jun 2, 2022 |
| HAMES NORMAN R | Pres and COO-West … | SELL | $100K–$500K | 10K | $20.53 | Jun 2, 2022 |
| HAMES NORMAN R | Pres and COO-West … | SELL | $100K–$500K | 10K | $19.13 | May 25, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 288 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| BECK MACK & OLIVER LLC | 3.2M | $1M+ | SH |
| STATE STREET CORP | 2.6M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.4M | $1M+ | SH |
| JB CAPITAL PARTNERS LP | 1.4M | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 1.3M | $1M+ | SH |
| Alyeska Investment Group, L.P. | 1.2M | $1M+ | SH |
| Clearbridge Investments, LLC | 1.1M | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 908K | $1M+ | SH |
| Van Berkom & Associates Inc. | 824K | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 768K | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 768K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 758K | $1M+ | SH |
| LOOMIS SAYLES & CO L P | 607K | $1M+ | SH |
| SOROS FUND MANAGEMENT LLC | 575K | $1M+ | SH |
| Alpha Wave Global, LP | 541K | $1M+ | SH |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 532K | $1M+ | SH |
| Defiance ETFs, LLC | 518K | $1M+ | SH |
| Penserra Capital Management LLC | 518K | $1M+ | SH |
| Global Alpha Capital Management Ltd. | 488K | $1M+ | SH |
| Neuberger Berman Group LLC | 484K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Oct 17, 2025
12.0%
9.3M shares
SC 13G/A · Jan 8, 2025
10.0%
7.4M shares
SC 13G/A · Nov 12, 2024
9.9%
7.4M shares
SC 13G/A · Nov 4, 2024
9.9%
7.4M shares
Sandy Nyholm Kaminsky, as trustee of the HFB Heirs’ Trust II (formerly HFB Heirs’ Family Trust)
SC 13G/A · Oct 24, 2024
6.2%
4.6M shares
Beck, Mack & Oliver LLC . 13-0477010
SC 13G/A · Feb 14, 2024
4.8%
3.2M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
6.3%
4.3M shares
SC 13G/A · Jan 23, 2024
13.1%
8.9M shares
SC 13G/A · Jan 23, 2023
12.2%
7.0M shares
SC 13G/A · Jan 27, 2022
12.0%
6.4M shares
SC 13G/A · Jan 25, 2022
12.0%
6.4M shares