Company: SINT
Filing Date: 2025-10-03
Form Type: 424B5
Source: 0001493152-25-016902
Chunk: 0

Company: Sintx Technologies, Inc.
Filing Date: 2025-10-03
Form: 424B5
Chunk 0
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| PROSPECTUS                          
 SUPPLEMENT                          | Filed                      
 Pursuant to Rule 424(b)(5) |
| (To                                 
 Prospectus dated November 27, 2023) | Registration               
 No. 333-274951             |

<div align='center'>Up to $6,413,876

Common Stock

SINTX TECHNOLOGIES, INC.</div>

We have entered into an At the Market Offering Agreement (the “Sales Agreement”), with H.C. Wainwright & Co., LLC (“Wainwright” or the “sales agent”) relating to the sale of shares of our common stock, par value $0.01 per share (the “Common Stock”), offered by this prospectus supplement and the accompanying prospectus. In accordance with the terms of such Sales Agreement, we may offer and sell shares of our Common Stock having an aggregate offering price of up to $6,413,876 from time to time through or to Wainwright acting as our agent or principal.

Our Common Stock is traded on The Nasdaq Capital Market tier of The Nasdaq Stock Market, LLC under the symbol “SINT.” The last reported sale price of our Common Stock on The Nasdaq Capital Market on October 2, 2025 was $4.11 per share.

As of October 3, 2025 the aggregate market value of our Common Stock held by our non-affiliates was $19,241,630, based upon 3,492,129 shares of our outstanding Common Stock held by non-affiliates at the per share price of $5.51, the closing sale price of our Common Stock on The Nasdaq Capital Market on September 5, 2025. Pursuant to General Instruction I.B.6 of Form S-3, in no event will we sell securities in a public offering with a value exceeding more than one-third of our “public float” (i.e., the aggregate market value of our Common Stock held by our non-affiliates) in any 12 calendar-month period so long as our public float remains below $75.0 million. During the 12 calendar months prior to and including the date of this prospectus supplement (but excluding this offering), we have not sold any securities in reliance on General Instruction I.B.6 of Form S-3. As a result, we are eligible to offer and sell up to an aggregate of $6,413,876 of our securities pursuant to General Instruction I.B.6. of Form S-