Mark Stolper serves as Executive at RadNet, Inc., where they oversee executive responsibilities. Since joining the company, Mark Stolper has executed 68 insider transactions totaling $6.9M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 10, 2025 involved exercising options for 35,703 shares valued at $216.7K.
Mark Stolper currently holds 103,715 shares of RadNet, Inc. (RDNT), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Mark Stolper has been a net seller of RDNT stock. They have purchased $49.2K and sold $6.9M worth of shares.
Mark Stolper's most recent insider trade was on Dec 10, 2025, when they sold 35,703 shares at $6.07 per share.
Get notified when new Form 4 filings are submitted
| $73.89 |
| Discretionary |
| Jun 10, 2024 | RDNT | $1.5M | Sale | 25,000 | $61.27 | Discretionary |
| Mar 1, 2024 | RDNT | $0 | Award | 14,072 | $N/A | Discretionary |
| May 12, 2023 | RDNT | $0 | Gift | 900 | $N/A | Discretionary |
| May 4, 2023 | RDNT | $0 | Gift | 375 | $N/A | Discretionary |
| Aug 15, 2022 | SRGA | $0 | Award | 22,857 | $N/A | Discretionary |
| May 7, 2021 | SRGA | $0 | Award | 72,254 | $N/A | Discretionary |
| May 7, 2021 | SRGA | $0 | Award | 57,803 | $N/A | Discretionary |
| Feb 1, 2021 | SRGA | $25.0K | Purchase | 16,667 | $1.50 | Discretionary |
| Feb 26, 2020 | RTIX | $0 | Award | 24,692 | $N/A | Discretionary |
| Jan 6, 2020 | RDNT | $0 | Award | 11,625 | $N/A | Discretionary |
| Aug 15, 2019 | RDNT | $313.7K | Sale | 20,703 | $15.15 | Discretionary |
| Mar 18, 2019 | RDNT | $224.8K | Sale | 15,000 | $14.99 | Discretionary |
| Mar 8, 2019 | RTIX | $0 | Disposition | 66,784 | $N/A | Discretionary |
| Mar 8, 2019 | RTIX | $0 | Award | 66,784 | $N/A | Discretionary |
| Feb 26, 2019 | RTIX | $0 | Award | 21,322 | $N/A | Discretionary |
| Apr 11, 2018 | RDNT | $0 | Gift | 2,000 | $N/A | Discretionary |
| Mar 20, 2018 | RDNT | $197.8K | Sale | 15,000 | $13.19 | Discretionary |
| Feb 28, 2018 | RTIX | $0 | Award | 17,647 | $N/A | Discretionary |
| Aug 30, 2017 | RDNT | $101.9K | Sale | 10,000 | $10.19 | Discretionary |
| May 24, 2017 | RDNT | $110.0K | Sale | 15,000 | $7.33 | Discretionary |
| May 16, 2017 | RTIX | $0 | Award | 16,484 | $N/A | Discretionary |
| May 5, 2017 | RTIX | $22.9K | Purchase | 5,000 | $4.57 | Discretionary |
| Mar 14, 2017 | RTIX | $0 | Award | 6,331 | $N/A | Discretionary |
| Aug 12, 2016 | RDNT | $221.3K | Sale | 35,414 | $6.25 | Discretionary |
| Jan 4, 2016 | RDNT | $0 | Award | 35,703 | $N/A | Discretionary |
| Dec 3, 2015 | RDNT | $118.6K | Sale | 19,187 | $6.18 | Discretionary |
| May 20, 2015 | RDNT | $343.0K | Sale | 50,000 | $6.86 | Discretionary |
| Apr 15, 2015 | RDNT | $0 | Option Exercise | 50,000 | $N/A | Discretionary |