RadNet, Inc. (RDNT) CFO acquires 35,703 shares through option exercise

Rhea-AI Filing Summary

RadNet, Inc. reported that its executive vice president and chief financial officer exercised an employee stock option and acquired additional common shares. On December 10, 2025, the officer exercised an employee stock option (right to buy) to purchase 35,703 shares of common stock at a price of $6.07 per share, resulting in the same number of shares being acquired.

After this transaction, the officer directly owned 103,715 shares of RadNet common stock. The option was originally granted on January 4, 2016 for up to 35,703 shares and vested in three equal annual installments, subject to the officer’s continued service.

Insider Trade Summary

35,703 shares exercised/converted

Mixed 2 txns

Insider STOLPER MARK

Role EVP, Chief Financial Officer

Type	Security	Shares	Price	Value
Exercise	Employee Stock Option (right to buy)	35,703	$0.00	--
Exercise	Common Stock	35,703	$6.07	$217K

Holdings After Transaction: Employee Stock Option (right to buy) — 0 shares (Direct); Common Stock — 103,715 shares (Direct)

Footnotes (1)

1. Exercise of previously granted option. 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.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

STOLPER MARK

(Last) (First) (Middle)

C/O RADNET, INC.

1510 COTNER AVENUE

(Street)

LOS ANGELES, CA 90025

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
RadNet, Inc. [ RDNT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
12/10/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/10/2025		M		35,703(1)	A	$6.07	103,715	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (right to buy)	$6.07	12/10/2025		M			35,703	(2)	01/04/2026	Common Stock	35,703	$0	0	D

Explanation of Responses:

1. Exercise of previously granted option.

2. 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.

	/s/ Jose Gamez, Attorney-in-Fact	12/12/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider stock transaction did RadNet (RDNT) disclose in this Form 4?

The filing shows that RadNet’s executive vice president and chief financial officer exercised an employee stock option on December 10, 2025 and acquired 35,703 shares of common stock at $6.07 per share.

How many RDNT shares did the RadNet CFO own after the December 10, 2025 transaction?

Following the option exercise, the officer beneficially owned 103,715 shares of RadNet, Inc. common stock in direct ownership.

What were the key terms of the employee stock option exercised by the RadNet CFO?

The employee stock option had an exercise price of $6.07 per share and covered up to 35,703 shares of RadNet common stock, which were acquired upon exercise on December 10, 2025.

When was the RadNet CFO stock option originally granted and how did it vest?

The option was granted on January 4, 2016 for up to 35,703 shares. It vested in three equal annual installments, with one-third vesting on the first anniversary of issuance and one-third on each anniversary thereafter, subject to continued service.

What types of securities are reported for the RadNet CFO in this Form 4?

The report covers both common stock acquired through the transaction (35,703 shares) and the related employee stock option (right to buy) that was exercised at $6.07 per share.