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Form 8-K

sec.gov

8-K — RadNet, Inc.

Accession: 0001683168-26-006479

Filed: 2026-08-14

Period: 2026-08-14

CIK: 0000790526

SIC: 8071 (SERVICES-MEDICAL LABORATORIES)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — radnet_8k.htm (Primary)

EX-5.1 — OPINION (radnet_0501.htm)

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8-K — CURRENT REPORT

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UNITED

STATES

SECURITIES

AND EXCHANGE COMMISSION

Washington,

D.C. 20549

FORM

8-K

CURRENT

REPORT

Pursuant

to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date

of Report (Date of earliest event reported) August

14, 2026

RadNet,

Inc.

(Exact

name of registrant as specified in its charter)

Delaware

001-33307

13-3326724

(State or other

jurisdiction of incorporation)

(Commission File Number)

(IRS Employer Identification No.)

1510 Cotner Avenue

Los

Angeles, California 90025

(Address of Principal Executive Offices) (ZipCode)

(310) 478-7808

(Registrant’s

Telephone Number, Including Area Code)

Check

the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under

any of the following provisions:

☐ Written

communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting

material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement

communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement

communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities

registered pursuant to Section 12(b) of the Act:

Title

of each class

Trading

Symbol(s)

Name

of each exchange on which registered

Common

Stock, $0.0001 par value

RDNT

NASDAQ

Indicate

by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405

of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging

growth company ☐

If an emerging

growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any

new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01.

Other Events.

On August 14, 2026, RadNet, Inc. (the “Company”)

filed with the Securities and Exchange Commission, a prospectus supplement dated August 14, 2026 (the “Prospectus

Supplement”) to the Company’s automatic shelf registration statement on Form S-3 (Registration No. 333-291945). The

Prospectus Supplement was filed to register for resale from time to time of up to 34,069 shares of the Company’s common stock,

par value $0.0001 per share (the “Shares”) by certain See-Mode Sellers (as defined below) as the selling stockholders

referenced in the Prospectus Supplement. The Shares are to be issued to certain See-Mode Sellers or their respective designees as

the share component of the payment for the satisfaction of certain milestone conditions set forth in, and pursuant to, that certain

Share Purchase Agreement, dated June 2, 2025, by and among the sellers set forth on Schedule 1 thereto (the “See-Mode

Sellers”) and DH AI International Holdings, B.V., a wholly-owned subsidiary of the Company incorporated in the

Netherlands.

In connection with the Prospectus Supplement, the Company is filing

the opinion of its Executive Vice President, Chief Legal Officer and Corporate Secretary, David J. Katz, regarding the legality of the

securities being registered, which opinion is attached as Exhibit 5.1 to this Current Report on Form 8-K and is incorporated by reference

herein and in the Registration Statement.

Item 9.01.

Financial

Statements and Exhibits.

(d) Exhibits

Exhibit Number

Description

5.1

Opinion of David J. Katz, Executive Vice President, Chief Legal Officer and Corporate Secretary of the Company.

23.1

Consent of David J. Katz, Executive Vice President, Chief Legal Officer

and Corporate Secretary of the Company (included in Exhibit 5.1).

104

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SIGNATURE

Pursuant to the requirements of the Securities

Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: August 14, 2026

RADNET, INC.

By:

/s/ Mark D. Stolper

Mark D. Stolper

Chief Financial Officer

3

EX-5.1 — OPINION

EX-5.1

Filename: radnet_0501.htm · Sequence: 2

Exhibit 5.1

August 14, 2026

RadNet, Inc.

1510 Cotner Avenue

Los Angeles, CA 90025

Ladies and Gentlemen:

I am the Executive Vice President, Chief Legal

Officer and Corporate Secretary of RadNet, Inc., a Delaware corporation (the “Company”). I have examined the Registration

Statement on Form S-3 (File No. 333-291945) (the “Registration Statement”) of the Company filed with the Securities and Exchange

Commission (the “Commission”) pursuant to the Securities Act of 1933, as amended (the “Securities Act”), and the

prospectus supplement dated August 14, 2026 (the “Prospectus Supplement”) to the prospectus dated December 4, 2025, relating

to the registration and resale by the selling stockholders identified in the Prospectus Supplement (the “Selling Stockholders”)

of up to 34,069 of shares of common stock, $0.0001 par value per share, of the Company (the “Shares”) to be issued to such

selling stockholders pursuant to the Share Purchase Agreement, dated June 2, 2025, by and among the Selling Stockholders and the Company’s

wholly-owned subsidiary, DH AI International Holdings, B.V., a company incorporated in the Netherlands (the “SPA”).

In arriving at the opinion expressed below, I

have examined originals, or copies certified or otherwise identified to my satisfaction as being true and complete copies of the originals,

specimen common stock certificates and such other documents, corporate records, certificates of officers of the Company and of public

officials and other instruments as I have deemed necessary or advisable to enable me to render the opinions set forth below. In my examination,

I have assumed without independent investigation the genuineness of all signatures, the legal capacity and competency of all natural persons,

the authenticity of all documents submitted to me as originals and the conformity to original documents of all documents submitted to

me as copies.

Based upon the foregoing, and subject to the assumptions,

exceptions, qualifications and limitations set forth herein, I am of the opinion that the Shares have been duly authorized for issuance,

and when issued and delivered by the Company pursuant to SPA, will be validly issued, fully paid and nonassessable.

My opinion is expressly limited to the matters

set forth above, and I render no opinion, whether by implication or otherwise, as to any other matters relating to the Company, the Shares,

the SPA or the Registration Statement. I express no opinion as to matters governed by any laws other than the Delaware General Corporation

Law in effect as of the date of this opinion. This opinion is given as of the date hereof, and I assume no obligation to update or supplement

this opinion to reflect any facts or circumstances that may hereafter occur or come to my attention, or any changes in law that may hereafter

occur. This opinion is to be used only in connection with the offer and sale of the Shares while the Registration Statement is in effect.

I consent to the filing of this opinion as an

exhibit to a current report on Form 8-K filed by the Company on the date hereof and its incorporation by reference into to the Registration

Statement, and I further consent to the use of my name under the caption “Legal Matters” in the Prospectus Supplement. In

giving this consent, I do not thereby admit that I am within the category of persons whose consent is required under Section 7 of the

Securities Act or the Rules and Regulations of the Commission.

Very truly yours,

/s/ David J. Katz

Name: David J. Katz

Title: Executive Vice President, Chief Legal Officer and Corporate Secretary

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