Company: SINT
Filing Date: 2025-10-03
Form Type: 424B5
Source: 0001493152-25-016902
Chunk: 1

Company: Sintx Technologies, Inc.
Filing Date: 2025-10-03
Form: 424B5
Chunk 1
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3.

Sales of our Common Stock, if any, under this prospectus supplement will be made in sales deemed to be an “at the market offering” as defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, as amended (the “Securities Act”), including, without limitation, sales made directly on or through the Nasdaq Capital Market, the trading market for our Common Stock, or any other existing trading market in the United States for our Common Stock, sales made to or through a market maker other than on an exchange or otherwise, directly to Wainwright as principal, in negotiated transactions at market prices prevailing at the time of sale or at prices related to such prevailing market prices and/or in any other method permitted by law. Wainwright is not required to sell any specific amount of securities but will act as our sales agent using commercially reasonable efforts consistent with its normal trading and sales practices, on mutually agreed terms between Wainwright and us. There is no arrangement for funds to be received in any escrow, trust or similar arrangement.

The compensation to Wainwright for sales of Common Stock sold pursuant to the Sales Agreement will be 3.0% of the gross proceeds of any shares of Common Stock sold under the Sales Agreement. In connection with the sale of the Common Stock on our behalf, Wainwright will be deemed to be an “underwriter” within the meaning of the Securities Act and the compensation of Wainwright will be deemed to be underwriting commissions or discounts. We have also agreed to provide indemnification and contribution to Wainwright with respect to certain liabilities, including liabilities under the Securities Act or the Securities Exchange Act of 1934, as amended (the “Exchange Act”). See the section titled “Plan of Distribution” on page S-8 of this prospectus supplement.

Investing in our common stock involves a high degree of risk. You should review carefully the risks and uncertainties referenced under the heading “Risk Factors” beginning on page S-3 of this prospectus supplement and under similar headings in the documents that are incorporated by reference into this prospectus supplement and the accompanying prospectus.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

<div align='center'>H.C. Wainwright & Co.

The date of this prospectus supplement is October 3, 2025.</div>