Material Event (Form 8-K)

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.