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 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Eberwein Jeffrey E. (Last) (First) (Middle) 53 FOREST AVENUE SUITE 101 (Street) OLD GREENWICH CT 06870 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Superior Drilling Products, Inc. [ SDPI ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 05/04/2023
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person
	Rule 10b5-1(c) Transaction Indication Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

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(1)								2,250,000	D(2)
Common Stock(1)	05/04/2023		P		14,979	A	$0.95	1,164,979	I	By: Star Equity Fund, LP(3)
Common Stock(1)	05/05/2023		P		4,403	A	$0.95	1,169,382	I	By: Star Equity Fund, LP(3)
Common Stock(1)	05/08/2023		P		14,366	A	$0.95	1,183,748	I	By: Star Equity Fund, LP(3)

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

1. Name and Address of Reporting Person* Eberwein Jeffrey E. (Last) (First) (Middle) 53 FOREST AVENUE SUITE 101 (Street) OLD GREENWICH CT 06870 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Star Equity Fund, LP (Last) (First) (Middle) 53 FOREST AVENUE, SUITE 101 (Street) OLD GREENWICH CT 06870 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Star Equity Fund GP, LLC (Last) (First) (Middle) 53 FOREST AVENUE, SUITE 101 (Street) OLD GREENWICH CT 06870 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Star Investment Management LLC (Last) (First) (Middle) 53 FOREST AVENUE, SUITE 101 (Street) OLD GREENWICH CT 06870 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Star Value, LLC (Last) (First) (Middle) 53 FOREST AVENUE, SUITE 101 (Street) OLD GREENWICH CT 06870 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* STAR EQUITY HOLDINGS, INC. (Last) (First) (Middle) 53 FOREST AVE SUITE 101 (Street) OLD GREENWICH CT 06870 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. This Form 4 is filed jointly by Jeffrey E. Eberwein, Star Equity Fund, LP ("Star Equity Fund"), Star Equity Fund GP, LLC ("Star Equity GP"), Star Investment Management, LLC ("Star Investment Management"), Star Value, LLC ("Star Value") and Star Equity Holdings, Inc. ("Star Equity Holdings") (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each Reporting Person disclaims beneficial ownership of the shares of Common Stock reported herein except to the extent of his or its pecuniary interest therein, and this report shall not be deemed to be an admission that any Reporting Person is the beneficial owner of such shares of Common Stock for purposes of Section 16 or for any other purpose.

2. Shares owned directly by Mr. Eberwein.

3. Shares owned directly by Star Equity Fund. Star Equity GP, as the general partner of Star Equity Fund, may be deemed the beneficial owner of the securities owned by Star Equity Fund. Star Investment Management, as the investment manager of Star Equity Fund, may be deemed the beneficial owner of the securities owned by Star Equity Fund. Star Value, as the sole member of Star Equity GP and wholly owned subsidiary of Star Equity Holdings, may be deemed the beneficial owner of the securities owned by Star Equity Fund. Star Equity Holdings, as the parent of Star Value, sole member of Star Management, and limited partner of Star Equity Fund, may be deemed the beneficial owner of the securities owned by Star Equity Fund. As the manager of Star Equity GP and Star Investment Management, Mr. Eberwein may be deemed the beneficial owner of the securities owned by Star Equity Fund.

	/s/ Jeffrey E. Eberwein	05/08/2023
	Star Equity Fund, LP; By: /s/ Jeffrey E. Eberwein, Authorized Signatory	05/08/2023
	Star Equity Fund GP, LLC; By: /s/ Jeffrey E. Eberwein, Authorized Signatory	05/08/2023
	Star Investment Management, LLC; By: /s/ Jeffrey E. Eberwein, Authorized Signatory	05/08/2023
	Star Value, LLC; By: /s/ Jeffrey E. Eberwein, Authorized Signatory	05/08/2023
	Star Equity Holdings, Inc.; By: /s/ Jeffrey E. Eberwein, Authorized Signatory	05/08/2023
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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