SCHEDULE 13G/A 0001104659-25-065806 0001921821 XXXXXXXX LIVE 1 Common Stock, par value $0.01 per share 07/10/2025 0001269026 Sintx Technologies, Inc. 829392703 1885 West 2100 South Salt Lake City UT 84119 Rule 13d-1(c) Sinaptic Holdings, LLC DE 281450.00 0.00 281450.00 0.00 281450.00 N 7.2 OO The reporting person's ownership consists of (i) 216,450 shares of common stock ("Common Stock"), (ii) 65,000 shares of Common Stock issuable upon the exercise of warrants due to the vesting of certain warrants to purchase shares of Common Stock (the "Vested Warrants") and (iii) 260,000 unvested warrants to purchase shares of Common Stock (the "Unvested Warrants", and together with the Vested Warrants, the "Warrants") that will vest, if at all, upon the achievement of certain performance goals over a four-year period starting July 1, 2025 and subject to a provision limiting the holder's ability to exercise the Warrants if such exercise would cause the holder to beneficially own greater than 19.99% of the Issuer. Because the Unvested Warrants are unvested and subject to performance-based vesting goals, which have not yet been achieved, the shares of Common Stock underlying the Unvested Warrants are not deemed beneficially owned and have not been included in any of the amounts reported above. Sintx Technologies, Inc. 1885 West 2100 South Salt Lake City, UT, 84119 Sinaptic Holdings, LLC ("Holdings" and the "Reporting Person") The address of the Reporting Person is 591 Brookside Drive, Longmont, CO 80504 The Reporting Person is organized in the State of Delaware. Y On July 10, 2025, Sinaptic Surgical, LLC ("Surgical") transferred all of its shares of Common Stock and all of its Warrants to Holdings, its sole member and manager at the time of the transfer. As a result of such transfer, Surgical no longer has voting or dispositive power over any shares of Common Stock. Subsequent to such transfer and pursuant to a separate transaction, Holdings is no longer the sole member and manager and no longer controls Surgical, a former reporting person on the Schedule 13G originally filed on July 3, 2025, therefore Surgical is not included in this Amendment No. 1 to Schedule 13G. On October 20, 2025, Warrants representing the right to acquire 65,000 shares of Common Stock vested pursuant to the achievement of certain performance-based vesting goals. As a result of the foregoing, Holdings owns 216,450 shares of Common Stock and has the right to acquire 65,000 shares of Common Stock issuable upon the exercise of Vested Warrants. Holdings is also the record holder of 260,000 Unvested Warrants that will vest, if at all, upon the achievement of certain performance goals over a four-year period starting July 1, 2025 and subject to a provision limiting the holder's ability to exercise the Unvested Warrants if such exercise would cause the holder to beneficially own greater than 19.99% of the Issuer. Because the Unvested Warrants are unvested and subject to performance-based vesting goals, which have not yet been achieved, the shares of Common Stock underlying the Unvested Warrants are not deemed beneficially owned and have not been included in any of the amounts reported above. Holdings: 7.2%* *The percentage ownership is determined based on an aggregate 3,916,956 shares of Common Stock of the Issuer outstanding, which is the sum of (i) 3,851,956 shares of Common Stock outstanding as of November 7, 2025, as reported on Form 10-Q filed by the Issuer with the Securities and Exchange Commission on November 12, 2025, and (ii) 65,000 shares of Common Stock issuable upon the exercise of Vested Warrants. 281,450 0 281,450 0 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. Sinaptic Holdings, LLC /s/ Hugh Roberts 11/14/2025