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Mark Stolper Insider Profile
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Mark Stolper, EVP & CFO at Radnet, holds 68.01K shares in Radnet (Ticker: RDNT), holds 28.87K shares in Surgalign Holdings (Ticker: SRGAQ), holds ― shares in Coherus Biosciences (Ticker: CHRS). Most recently, Mark Stolper Sold ― shares of Radnet on Sep 18, 2025 for an estimated value of $2.59M.
Profitable Transactions
4 out of 14 Profitable Transactions
Average Return
-13.30%
Average return per transaction
Time Frame
Compare to
Insider Holdings
Insider Roles
Roles that Mark Stolper holds in companies
Most Profitable Insider Trade
The most profitable trade made by Mark Stolper
Mark Stolper's Trading History
Radnet
Sep 18, 2025
EVP & CFO
Informative Sell
2.59M
$5.16M
Surgalign Holdings
Aug 17, 2022
―
Uninformative Buy
―
$519.61
Coherus Biosciences
―
Director
―
―
Hudson Global
Oct 21, 2014
Former member of 10% owner grp
Informative Buy
1.34K
$17.10K
On Track Innovations
―
―
―
$0.00
Alco Stores
―
―
―
―
List of latest transactions for each holding click on a transaction to see Mark Stolper's performance on stock
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Mark Stolper insider profile FAQ
What is the percentage of profitable transactions made by Mark Stolper?
The percentage of profitable transactions made by Mark Stolper is 29%.
What is the average return per transaction made by Mark Stolper?
The average return per transaction made by Mark Stolper is -13.30%.
What stocks does Mark Stolper hold?
Mark Stolper holds: RDNT, SRGAQ, CHRS, STRR, OTIVF, ALCSQ stocks.
What was Mark Stolper’s latest transaction?
Mark Stolper latest transaction was an Informative Sell of $2.59M.
What was Mark Stolper's most profitable transaction?
Mark Stolper’s most profitable transaction was an Informative Sell of RDNT stock on March 20, 2019. The return on the trade was 40.30%.
What is Mark Stolper's role in Radnet?
Mark Stolper's role in Radnet is EVP & CFO.
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