Corporate Action, Amendments to Bylaws (Form 8-K)

Item 3.03. Material Modification to Rights of Security Holders.

The information set forth in Item 5.03 of this Current Report on Form 8-K is incorporated by reference into this Item 3.03.

Item 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

On May 14, 2026, Radnostix, Inc. (the "Company") received approval of a further modification to the maturity date of its Series C Convertible Redeemable Preferred Stock (the "Series C Preferred Stock") from a majority of the outstanding shares of the Series C Preferred Stock. The modification extends the maturity date of the Series C Preferred for an additional year to February 28, 2028. All other terms in the Series C Preferred Stock remain unchanged. In connection therewith, on May 19, 2026, the Company filed a Certificate of Amendment to Statement of Designation of the Series C Preferred Stock (the "Certificate of Amendment") with the Secretary of State of the State of Texas to reflect the approved modification. The foregoing description of the Certificate of Amendment does not purport to be complete and is subject to, and is qualified in its entirety by reference to, the full text of the Certificate of Amendment, which is attached as Exhibit 3.1 to this Current Report on Form 8-K and is incorporated herein by reference.