Mark Stolper - 10 Dec 2025 Form 4 Insider Report for RadNet, Inc. (RDNT)

Reporting relationship: EVP, Chief Financial Officer
Issuer ticker: RDNT
Reported as of: 10 Dec 2025
Net transaction value: +$216,717
SEC form: 4
Accepted by SEC: 12 Dec 2025, 16:15:27 UTC
Prior SEC filing: 18 Sep 2025
Next SEC filing: 12 Jan 2026
Source filing: View source filing
Reporting owner signature: /s/ Jose Gamez, Attorney-in-Fact

Key filing fact

Mark Stolper filed Form 4 for RadNet, Inc. (RDNT) on 12 Dec 2025.

Key facts

This page summarizes Mark Stolper's Form 4 filing for RadNet, Inc. (RDNT).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 12 Dec 2025, 16:15.

Change

Previous filing in this sequence was filed on 18 Sep 2025.
Current net transaction value: +$216,717.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001281961 Primary reporting owner

STOLPER MARK

Relationship: EVP, Chief Financial Officer
Address: C/O RADNET, INC., 1510 COTNER AVENUE, LOS ANGELES,
Signature: /s/ Jose Gamez, Attorney-in-Fact
Signature date: 12 Dec 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

RDNT transaction

Common Stock

Options Exercise

Transaction value: $216,717
Shares: +35,703
Change %: +52%
Price: $6.07
Shares after: 103,715
Date: 10 Dec 2025
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

RDNT transaction Derivative

Employee Stock Option (right to buy)

Options Exercise

Transaction value: $0
Shares: -35,703
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 10 Dec 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 35,703
Exercise price: $6.07
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Exercise of previously granted option.

Footnote F2

On January 4, 2016, the reporting person was granted a stock option to purchase up to 35,703 shares of common stock of RadNet, Inc., subject to time-based vesting. Subject to the reporting person's continued service, the stock option vested in three equal annual installments, 1/3 on first anniversary of issuance and 1/3 on each anniversary thereafter.