# EDGAR Filing Document

**Accession Number:** 0001600422
**File Stem:** 0000921895-23-000598
**Filing Date:** 2023-2
**Character Count:** 15763
**Document Hash:** bb4e3efb262c301e3553fd11acbec4d6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000921895-23-000598.hdr.sgml**: 20230223

**ACCESSION NUMBER**: 0000921895-23-000598

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230221

**FILED AS OF DATE**: 20230223

**DATE AS OF CHANGE**: 20230223

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** STAR EQUITY HOLDINGS, INC.
- **CENTRAL INDEX KEY:** 0000707388
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36453
- **FILM NUMBER:** 23660556

**BUSINESS ADDRESS:**
- **STREET 1:** 53 FOREST AVENUE
- **STREET 2:** SUITE 101
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870
- **BUSINESS PHONE:** 203-489-9501

**MAIL ADDRESS:**
- **STREET 1:** 53 FOREST AVE
- **STREET 2:** SUITE 101
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870

**FORMER NAME:**
- **FORMER CONFORMED NAME:** DIGIRAD CORP
- **DATE OF NAME CHANGE:** 19821006
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Eberwein Jeffrey E.
- **CENTRAL INDEX KEY:** 0001548312

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36453
- **FILM NUMBER:** 23660561

**MAIL ADDRESS:**
- **STREET 1:** 53 FOREST AVENUE
- **STREET 2:** SUITE 101
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Star Equity Fund, LP
- **CENTRAL INDEX KEY:** 0001915673
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36453
- **FILM NUMBER:** 23660560

**BUSINESS ADDRESS:**
- **STREET 1:** 53 FOREST AVENUE, SUITE 101
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870
- **BUSINESS PHONE:** (203) 489-9500

**MAIL ADDRESS:**
- **STREET 1:** 53 FOREST AVENUE, SUITE 101
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Star Equity Fund GP, LLC
- **CENTRAL INDEX KEY:** 0001956411
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36453
- **FILM NUMBER:** 23660559

**BUSINESS ADDRESS:**
- **STREET 1:** 53 FOREST AVENUE, SUITE 101
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870
- **BUSINESS PHONE:** (203) 489-9500

**MAIL ADDRESS:**
- **STREET 1:** 53 FOREST AVENUE, SUITE 101
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Star Value, LLC
- **CENTRAL INDEX KEY:** 0001956407
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36453
- **FILM NUMBER:** 23660557

**BUSINESS ADDRESS:**
- **STREET 1:** 53 FOREST AVENUE, SUITE 101
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870
- **BUSINESS PHONE:** (203) 489-9500

**MAIL ADDRESS:**
- **STREET 1:** 53 FOREST AVENUE, SUITE 101
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Star Investment Management LLC
- **CENTRAL INDEX KEY:** 0001956409
- **STATE OF INCORPORATION:** CT
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36453
- **FILM NUMBER:** 23660558

**BUSINESS ADDRESS:**
- **STREET 1:** 53 FOREST AVENUE, SUITE 101
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870
- **BUSINESS PHONE:** (203) 489-9500

**MAIL ADDRESS:**
- **STREET 1:** 53 FOREST AVENUE, SUITE 101
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Superior Drilling Products, Inc.
- **CENTRAL INDEX KEY:** 0001600422
- **STANDARD INDUSTRIAL CLASSIFICATION:** OIL & GAS FILED MACHINERY & EQUIPMENT [3533]
- **IRS NUMBER:** 464341605
- **STATE OF INCORPORATION:** UT
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 1583 SOUTH 1700 EAST
- **CITY:** VERNAL
- **STATE:** UT
- **ZIP:** 84078
- **BUSINESS PHONE:** 435-789-0594

**MAIL ADDRESS:**
- **STREET 1:** 1583 SOUTH 1700 EAST
- **CITY:** VERNAL
- **STATE:** UT
- **ZIP:** 84078

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SD Co Inc
- **DATE OF NAME CHANGE:** 20140218

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>Eberwein Jeffrey E.<br><sub>(Last) (First) (Middle)</sub><br>53 FOREST AVENUE<br>SUITE 101<br><sub>(Street)</sub><br>OLD GREENWICH, CT 06870<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-21 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Superior Drilling Products, Inc. [ SDPI ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Star Equity Fund, LP<br><sub>(Last) (First) (Middle)</sub><br>53 FOREST AVENUE, SUITE 101<br><sub>(Street)</sub><br>OLD GREENWICH, CT 06870<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-21 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Superior Drilling Products, Inc. [ SDPI ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Star Equity Fund GP, LLC<br><sub>(Last) (First) (Middle)</sub><br>53 FOREST AVENUE, SUITE 101<br><sub>(Street)</sub><br>OLD GREENWICH, CT 06870<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-21 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Superior Drilling Products, Inc. [ SDPI ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Star Investment Management LLC<br><sub>(Last) (First) (Middle)</sub><br>53 FOREST AVENUE, SUITE 101<br><sub>(Street)</sub><br>OLD GREENWICH, CT 06870<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-21 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Superior Drilling Products, Inc. [ SDPI ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Star Value, LLC<br><sub>(Last) (First) (Middle)</sub><br>53 FOREST AVENUE, SUITE 101<br><sub>(Street)</sub><br>OLD GREENWICH, CT 06870<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-21 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Superior Drilling Products, Inc. [ SDPI ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>STAR EQUITY HOLDINGS, INC.<br><sub>(Last) (First) (Middle)</sub><br>53 FOREST AVE<br>SUITE 101<br><sub>(Street)</sub><br>OLD GREENWICH, CT 06870<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-21 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Superior Drilling Products, Inc. [ SDPI ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock<sup>(1)</sup> | 2023-02-21 |  | P |  | 22316 | A | $0.96 | 2126908 | D<sup>(2)</sup> |  |
| Common Stock<sup>(1)</sup> | 2023-02-22 |  | P |  | 15019 | A | $0.96 | 2141927 | D<sup>(2)</sup> |  |
| Common Stock<sup>(1)</sup> | 2023-02-23 |  | P |  | 42502 | A | $0.98 | 2184429 | D<sup>(2)</sup> |  |
| Common Stock<sup>(1)</sup> |  |  |  |  |  |  |  | 1150000 | I | By: Star Equity Fund, LP<sup>(3)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(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.

**Signature:** /s/ Jeffrey E. Eberwein  
**Date:** 2023-02-23

**Signature:** Star Equity Fund, LP; By: /s/ Jeffrey E. Eberwein, Authorized Signatory  
**Date:** 2023-02-23

**Signature:** Star Equity Fund GP, LLC; By: /s/ Jeffrey E. Eberwein, Authorized Signatory  
**Date:** 2023-02-23

**Signature:** Star Investment Management, LLC; By: /s/ Jeffrey E. Eberwein, Authorized Signatory  
**Date:** 2023-02-23

**Signature:** Star Value, LLC; By: /s/ Jeffrey E. Eberwein, Authorized Signatory  
**Date:** 2023-02-23

**Signature:** Star Equity Holdings, Inc.; By: /s/ Jeffrey E. Eberwein, Authorized Signatory  
**Date:** 2023-02-23

### Remarks:

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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**