# EDGAR Filing Document

**Accession Number:** 0001269026
**File Stem:** 0001104659-25-065806
**Filing Date:** 2025-7
**Character Count:** 13301
**Document Hash:** 7a3bab05c425e68457a608ac196c77db
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-065806.hdr.sgml**: 20250703

**ACCESSION NUMBER**: 0001104659-25-065806

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250703

**DATE AS OF CHANGE**: 20250703

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Sintx Technologies, Inc.
- **CENTRAL INDEX KEY:** 0001269026
- **STANDARD INDUSTRIAL CLASSIFICATION:** SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-88523
- **FILM NUMBER:** 251106001

**BUSINESS ADDRESS:**
- **STREET 1:** 1885 WEST 2100 STREET
- **CITY:** SALT LAKE CITY
- **STATE:** UT
- **ZIP:** 84119
- **BUSINESS PHONE:** 801-839-3516

**MAIL ADDRESS:**
- **STREET 1:** 1885 WEST 2100 STREET
- **CITY:** SALT LAKE CITY
- **STATE:** UT
- **ZIP:** 84119

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMEDICA Corp
- **DATE OF NAME CHANGE:** 20121231

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMEDICA CORP
- **DATE OF NAME CHANGE:** 20031104
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Sinaptic Holdings, LLC
- **CENTRAL INDEX KEY:** 0001921821

**ORGANIZATION NAME:**
- **EIN:** 874240292
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G

**BUSINESS ADDRESS:**
- **STREET 1:** 591 BROOKSIDE DRIVE
- **CITY:** LONGMONT
- **STATE:** CO
- **ZIP:** 80504
- **BUSINESS PHONE:** 970-875-4440

**MAIL ADDRESS:**
- **STREET 1:** 591 BROOKSIDE DRIVE
- **CITY:** LONGMONT
- **STATE:** CO
- **ZIP:** 80504

## Exhibit 99.1

**Exhibit 99.1**

**Joint Filing Agreement**

The persons below hereby agree that the Schedule 13G to which this agreement is attached as an exhibit, as well as all future amendments to such Schedule 13G, shall be filed jointly on behalf of each of them. This agreement is intended to satisfy the requirements of Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934. The undersigned also agree that this statement on Schedule 13G may be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements.

EXECUTED this July 1, 2025.

---

| | |
|:---|:---|
| SINAPTIC HOLDINGS, LLC | SINAPTIC HOLDINGS, LLC |
| By: | /s/ Bryan Scheer |
| Name: | Bryan Scheer |
| Title: | Chief Executive Officer |
| SINAPTIC SURGICAL, LLC | SINAPTIC SURGICAL, LLC |
| By: | /s/ Hugh Roberts |
| Name: | Hugh Roberts |
| Title: | President |

---

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**Issuer:** Sintx Technologies, Inc.

**Title of Class of Securities:** Common Stock, par value $0.01 per share

**CUSIP Number:** 829392703

**Date of Event Which Requires Filing of this Statement:** 07/01/2025

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [x] Rule 13d-1(c)

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Sinaptic Holdings, LLC | Names of Reporting Persons<br>Sinaptic Holdings, LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>216450.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>216450.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>216450.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>216450.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>7.9% | Percent of Class Represented by Amount in Row (9)<br>7.9% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** The reporting person's ownership consists of (i) 216,450 shares of common stock ("Common Stock") and (ii) 325,000 unvested warrants to purchase shares of Common Stock (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 Warrants are unvested and subject to performance-based vesting goals, which have not yet been achieved, the shares of Common Stock underlying the Warrants are not deemed beneficially owned and have not been included in any of the amounts reported above.

---

| 1. | Names of Reporting Persons<br>Sinaptic Surgical, LLC | Names of Reporting Persons<br>Sinaptic Surgical, LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>216450.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>216450.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>216450.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>216450.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>7.9% | Percent of Class Represented by Amount in Row (9)<br>7.9% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** The reporting person's ownership consists of (i) 216,450 shares of Common Stock and (ii) 325,000 unvested Warrants to purchase shares of Common Stock 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 Warrants are unvested and subject to performance-based vesting goals, which have not yet been achieved, the shares of Common Stock underlying the Warrants are not deemed beneficially owned and have not been included in any of the amounts reported above.

---

**Item 1(a). Name of Issuer:**
Sintx Technologies, Inc.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
1885 West 2100 South Salt Lake City, UT, 84119

**Item 2(a). Name of Person Filing:**
Sinaptic Holdings, LLC ("Holdings") and Sinaptic Surgical, LLC ("Surgical") (each, a "Reporting Person", and collectively, the "Reporting Persons")

Surgical is the record holder of the shares reported herein. Holdings is the sole member and manager of Surgical. Consequently, it may be deemed the beneficial owner of shares held by Surgical and to have voting and investment control over such shares.

**Item 2(b). Address of Principal Business Office:**
The address of each Reporting Person is 591 Brookside Drive, Longmont, CO 80504

**Item 2(c). Citizenship:**
Each Reporting Person is organized in the State of Delaware.

**Item 2(d). Title of Class of Securities:**
Common Stock, par value $0.01 per share

**Item 2(e). CUSIP Number:**
829392703

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

Holdings may be deemed to own 216,450 shares of Common Stock owned by Surgical. Surgical is also the record holder of 325,000 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 Warrants if such exercise would cause the holder to beneficially own greater than 19.99% of the Issuer. Because the Warrants are unvested and subject to performance-based vesting goals, which have not yet been achieved, the shares of Common Stock underlying the Warrants are not deemed beneficially owned and have not been included in any of the amounts reported above.

**(b) Percent of class:**

Holdings: 7.9%*
Surgical: 7.9%*
*The percentage ownership is determined based on an aggregate 2,725,156 shares of Common Stock of the Issuer outstanding, which is the sum of (i) 2,508,706 shares of Common Stock outstanding as of May 13, 2025, as reported on Form 10-Q filed by the Issuer with the Securities and Exchange Commission on May 15, 2025, and (ii) 216,450 shares of Common Stock owned by Surgical, which have been added to the total shares of Common Stock outstanding.

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

0

**(ii) Shared power to vote or to direct the vote:**

216,450

**(iii) Sole power to dispose or to direct the disposition of:**

0

**(iv) Shared power to dispose or to direct the disposition of:**

216,450

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

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.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Sinaptic Holdings, LLC**

**Date:** 07/03/2025

**By:** /s/ Bryan Scheer

**Name & Title:** Bryan Scheer / Chief Executive Officer

**Sinaptic Surgical, LLC**

**Date:** 07/03/2025

**By:** /s/ Hugh Roberts

**Name & Title:** Hugh Roberts / President