[Form 4] Sintx Technologies, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Sintx Technologies director and Chief Investment Officer Kevin Ontiveros reported significant increases in his ownership of the company’s common stock. On 12/05/2025, he made a series of open-market purchases, each for 5,000 shares of common stock, at prices ranging from $3.77 to $4.07 per share. After these purchases, his directly held stake rose to 139,000 shares.

On the same date, he also received an additional 53,867 common shares at a price of $0.00, described as an issuance incident to the vesting of a Restricted Stock Unit Award. Following this vesting, his directly owned common stock position increased further to 192,867 shares, highlighting both active open-market buying and equity compensation-based ownership growth.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Honigblum Gregg R.

(Last) (First) (Middle)

1885 WEST 2100 SOUTH

(Street)

SALT LAKE CITY, UT 84119

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Sintx Technologies, Inc. [ SINT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Investment Officer

3. Date of Earliest Transaction (Month/Day/Year)
11/07/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/05/2025		P		5,000	A	$3.95	79,000	D
Common Stock	12/05/2025		P		5,000	A	$3.94	84,000	D
Common Stock	12/05/2025		P		5,000	A	$4	89,000	D
Common Stock	12/05/2025		P		5,000	A	$4.07	94,000	D
Common Stock	12/05/2025		P		5,000	A	$4.02	99,000	D
Common Stock	12/05/2025		P		5,000	A	$3.94	104,000	D
Common Stock	12/05/2025		P		5,000	A	$3.91	109,000	D
Common Stock	12/05/2025		P		5,000	A	$3.91	114,000	D
Common Stock	12/05/2025		P		5,000	A	$3.91	119,000	D
Common Stock	12/05/2025		P		5,000	A	$3.88	124,000	D
Common Stock	12/05/2025		P		5,000	A	$3.86	129,000	D
Common Stock	12/05/2025		P		5,000	A	$3.91	134,000	D
Common Stock	12/05/2025		P		5,000	A	$3.77	139,000	D
Common Stock	12/05/2025		A(1)		53,867	A	$0.00	192,867	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Issuance of common shares incident to vesting of Restricted Stock Unit Award.

	/S/ Kevin Ontiveros, by power of attorney	12/08/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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