RadNet Inc美股招股说明书(2026-01-30版)

RadNet, Inc.Common Stock_____________________________ This prospectus supplement relates to the possible resale from time to time of up to 190,924 shares of our common stock, par value$0.0001 per share (our “common stock”) by the Cimar Sellers (as defined below) as the selling stockholders identified in thisprospectus supplement. The shares of common stock covered by this prospectus supplement and registered hereunder comprised of up to 190,924 shares(“Cimar Shares”) to be issued to the Cimar Sellers or their respective designees as the non-cash portion of the consideration for ouracquisition of all shares in Cimar (UK) Limited (“Cimar”) on November 10, 2025 pursuant to that certain Share Purchase Agreement,dated November 10, 2025, by and among the sellers set forth in Schedule 1 thereto (the “Cimar Sellers”) and DH AI InternationalHoldings, B.V., our wholly-owned subsidiary incorporated in the Netherlands (the “Cimar SPA”). The above referenced securities are to be issued in reliance upon the exemption from the registration contained in Section 4(a)(2) ofthe Securities Act of 1933, as amended (the “Securities Act”) or Rule 506 of Regulation D or Regulation S promulgated thereunder.We are registering the offer and resale of the Cimar Shares to satisfy the registration rights provisions of the Cimar SPA, pursuant towhich we agreed to register the resale of the Cimar Shares. We will not receive any proceeds from the sale of any shares offered by this prospectus supplement. Sales of the Cimar Shares by theselling stockholders may occur at fixed prices, at market prices prevailing at the time of sale, at prices related to prevailing marketprices or at negotiated prices. The selling stockholders may sell shares to or through underwriters, broker-dealers or agents, who mayreceive compensation in the form of discounts, concessions or commissions from the selling stockholders, the purchasers of the CimarShares, or both. See the section entitled “Plan of Distribution” beginning on page S-10 of this prospectus supplement. We are paying the cost of registering the Cimar Shares covered by this prospectus supplement as well as various related expenses. Theselling stockholders are responsible for all selling commissions, transfer taxes and other costs related to the offer and sale of the CimarShares. See the section entitled “Plan of Distribution” beginning on page S-10 of this prospectus supplement. Our common stock trades on the Nasdaq Global Select Market (“Nasdaq”), under the trading symbol “RDNT.” On January 28, 2026,the last reported sale price of our common stock on Nasdaq was $71.66 per share. Investing in our common stock involves a high degree of risk. Please read “Risk Factors” beginning on page S-5 of thisprospectus supplement and the risk factors included in the accompanying prospectus and in the documents filed with the U.S.Securities and Exchange Commission (the “SEC”), and incorporated by reference herein and therein to read about certainfactors you should consider before investing in our common stock. Neither the SEC nor any state securities commission has approved or disapproved of these securities or determined if thisprospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense. The date of this prospectus supplement is January 30, 2026. PROSPECTUS SUPPLEMENTABOUT THIS PROSPECTUS SUPPLEMENTPROSPECTUS SUPPLEMENT SUMMARYTHE OFFERINGRISK FACTORSCAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTSUSE OF PROCEEDSSELLING STOCKHOLDERPLAN OF DISTRIBUTIONLEGAL MATTERSEXPERTSWHERE YOU CAN FIND ADDITIONAL INFORMATIONINCORPORATION OF CERTAIN INFORMATION BY REFERENCE PROSPECTUS PROSPECTUSABOUT THIS PROSPECTUSABOUT RADNETWHERE YOU CAN FIND MORE INFORMATIONINFORMATION INCORPORATED BY REFERENCERISK FACTORSCAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTSUSE OF PROCEEDSDESCRIPTION OF COMMON STOCKDESCRIPTION OF PREFERRED STOCKDESCRIPTION OF DEBT SECURITIESDESCRIPTION OF WARRANTSDESCRIPTION OF SUBSCRIPTION RIGHTSDESCRIPTION OF UNITSLEGAL OWNERSHIP OF SECURITIESSELLING STOCKHOLDERSPLAN OF DISTRIBUTIONLEGAL MATTERSEXPERTS We have not authorized anyone to provide any information or to make any representations other than those contained orincorporated by reference into this prospectus supplement, the accompanying prospectus or in any free writing prospectusprepared by or on behalf of us. We take no responsibility for, and can provide no assurance as to the reliability of, any otherinformation that others may give you. This prospectus supplement is an offer to sell only the shares offered hereby, but onlyunder the circumstances and in the jurisdictions where it is lawful to do so. The information contained in this prospectussupplement, the accompanying prospectus, the documents incorporated herein by reference or in any applicable free writingprospectus is current only as of the date of the applicable document, regardless of its time of delivery or any sale of shares