# EDGAR Filing Document

**Accession Number:** 0001210708
**File Stem:** 0001437749-25-034969
**Filing Date:** 2025-11
**Character Count:** 18036
**Document Hash:** 7d4abf30266668aa39354ab3f28ef5e4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001437749-25-034969.hdr.sgml**: 20251114

**ACCESSION NUMBER**: 0001437749-25-034969

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251114

**DATE AS OF CHANGE**: 20251114

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Star Equity Holdings, Inc.
- **CENTRAL INDEX KEY:** 0001210708
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-HELP SUPPLY SERVICES [7363]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 593547281
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-78979
- **FILM NUMBER:** 251480951

**BUSINESS ADDRESS:**
- **STREET 1:** 53 FOREST AVENUE
- **CITY:** OLD GREENWICH
- **STATE:** CT
- **ZIP:** 06870
- **BUSINESS PHONE:** 2034095628

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

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Hudson Global, Inc.
- **DATE OF NAME CHANGE:** 20120501

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** HUDSON HIGHLAND GROUP INC
- **DATE OF NAME CHANGE:** 20030311

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** HUDSON HIGHLAND  INC
- **DATE OF NAME CHANGE:** 20030224
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Mink Brook Partners LP
- **CENTRAL INDEX KEY:** 0001774802

**ORGANIZATION NAME:**
- **EIN:** 833741411
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

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

**BUSINESS ADDRESS:**
- **STREET 1:** 201 SUMMA STREET
- **CITY:** WEST PALM BEACH
- **STATE:** FL
- **ZIP:** 33405
- **BUSINESS PHONE:** 3143230752

**MAIL ADDRESS:**
- **STREET 1:** 201 SUMMA STREET
- **CITY:** WEST PALM BEACH
- **STATE:** FL
- **ZIP:** 33405

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Mink Brook Capital LLC
- **DATE OF NAME CHANGE:** 20190424

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 3)**

**Issuer:** Star Equity Holdings, Inc.

**Title of Class of Securities:** Common Stock

**CUSIP Number:** 443787205

**Date of Event Which Requires Filing of this Statement:** 09/30/2025

**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>Mink Brook Partners LP | Names of Reporting Persons<br>Mink Brook Partners LP |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 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>159378.00 |
| 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>159378.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>159378.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>159378.00 |
| 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>4.6% | Percent of Class Represented by Amount in Row (9)<br>4.6% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** (1)	This percentage is calculated based upon 3,435,903 shares outstanding as of 11/13/25 disclosed in its recent 10-Q.

---

| 1. | Names of Reporting Persons<br>Mink Brook Opportunity Fund LP | Names of Reporting Persons<br>Mink Brook Opportunity Fund LP |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 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>155076.00 |
| 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>155076.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>155076.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>155076.00 |
| 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>4.5% | Percent of Class Represented by Amount in Row (9)<br>4.5% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** (1)	This percentage is calculated based upon 3,435,903 shares outstanding as of 11/13/25 disclosed in its recent 10-Q.

---

| 1. | Names of Reporting Persons<br>Mink Brook Capital GP LLC | Names of Reporting Persons<br>Mink Brook Capital GP LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 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>314454.00 |
| 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>314454.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>314454.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>314454.00 |
| 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>9.2% | Percent of Class Represented by Amount in Row (9)<br>9.2% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** (1)	This percentage is calculated based upon 3,435,903 shares outstanding as of 11/13/25 disclosed in its recent 10-Q.

---

| 1. | Names of Reporting Persons<br>William Mueller | Names of Reporting Persons<br>William Mueller |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 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>314454.00 |
| 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>314454.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>314454.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>314454.00 |
| 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>9.2% | Percent of Class Represented by Amount in Row (9)<br>9.2% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** (1)	This percentage is calculated based upon 3,435,903 shares outstanding as of 11/13/25 disclosed in its recent 10-Q.

---

| 1. | Names of Reporting Persons<br>Mink Brook Asset Management LLC | Names of Reporting Persons<br>Mink Brook Asset Management LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 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>314454.00 |
| 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>314454.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>314454.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>314454.00 |
| 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>9.2% | Percent of Class Represented by Amount in Row (9)<br>9.2% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** (1)	This percentage is calculated based upon 3,435,903 shares outstanding as of 11/13/25 disclosed in its recent 10-Q.

---

**Item 1(a). Name of Issuer:**
Star Equity Holdings, Inc.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
53 Forest Ave, Ste 102, Old Greenwich, CONNECTICUT, 06870.

**Item 2(a). Name of Person Filing:**
Mink Brook Partners LP
Mink Brook Opportunity Fund LP
Mink Brook Capital GP LLC
William Mueller
Mink Brook Asset Management LLC

**Item 2(b). Address of Principal Business Office:**
201 Summa Street
West Palm Beach, FL 33405

**Item 2(c). Citizenship:**
Mink Brook Partners LP - Delaware
Mink Brook Opportunity Fund LP - Delaware
Mink Brook Capital GP LLC - Delaware
William Mueller - Florida
Mink Brook Asset Management LLC - Delaware

**Item 2(d). Title of Class of Securities:**
Common Stock

**Item 2(e). CUSIP Number:**
443787205

**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:**

Amount beneficially owned:  As of the close of business on September 30, 2025, Mink Brook Partners LP and Mink Brook Opportunity Fund LP held an aggregate of 314,454 shares of the common stock of the Issuer. As the general partner to both Mink Brook Partners LP and Mink Brook Opportunity Fund LP, Mink Brook Capital GP LLC may be deemed to have shared power to vote or to direct the vote and to dispose or to direct the disposition of the shares held by Mink Brook Partners LP and Mink Brook Opportunity Fund LP. As the managing member of Mink Brook Capital GP LLC and Mink Brook Asset Management, LLC William Mueller may be deemed to have shared power to vote or to direct the vote and to dispose or to direct the disposition of the shares held by Mink Brook Partners LP and Mink Brook Opportunity Fund LP.
Neither the filing of this Schedule 13G nor any of its contents shall be deemed to constitute an admission that Mr. Mueller or Mink Brook Capital GP LLC is the beneficial owner of the shares of the common stock of the Issuer referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of their respective pecuniary interests therein.
Mink Brook acquired shares of Star Equity Holdings, Inc. after written permission was obtained by the company on November 20, 2023 to cross the 5% threshold assuming certain conditions are and continue to be met by Mink Brook Asset Management LLC.

**(b) Percent of class:**

Mink Brook Partners LP - 4.6%
Mink Brook Opportunity Fund LP - 4.5%
Mink Brook Capital GP LLC - 9.2%
William Mueller - 9.2%
Mink Brook Asset Management LLC - 9.2%

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

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

Mink Brook Partners LP - 0
Mink Brook Opportunity Fund LP - 0
Mink Brook Capital GP LLC - 0
William Mueller - 0
Mink Brook Asset Management LLC - 0

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

Mink Brook Partners LP - 159,378
Mink Brook Opportunity Fund LP - 155,076
Mink Brook Capital GP LLC - 314,454
William Mueller - 314,454
Mink Brook Asset Management LLC - 314,454

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

Mink Brook Partners LP - 0
Mink Brook Opportunity Fund LP - 0
Mink Brook Capital GP LLC - 0
William Mueller - 0
Mink Brook Asset Management LLC - 0

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

Mink Brook Partners LP - 159,378
Mink Brook Opportunity Fund LP - 155,076
Mink Brook Capital GP LLC - 314,454
William Mueller - 314,454
Mink Brook Asset Management LLC - 314,454

**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.

**Mink Brook Partners LP**

**Date:** 11/14/2025

**By:** /s/ William Mueller

**Name & Title:** Managing Member, general partner Mink Brook Capital GP LLC

**Mink Brook Opportunity Fund LP**

**Date:** 11/14/2025

**By:** /s/ William Mueller

**Name & Title:** Managing Member, general partner Mink Brook Capital GP LLC

**Mink Brook Capital GP LLC**

**Date:** 11/14/2025

**By:** /s/ William Mueller

**Name & Title:** Managing Member, general partner Mink Brook Capital GP LLC

**William Mueller**

**Date:** 11/14/2025

**By:** /s/ William Mueller

**Name & Title:** William Mueller

**Mink Brook Asset Management LLC**

**Date:** 11/14/2025

**By:** /s/ William Mueller

**Name & Title:** Managing Member, Mink Brook Asset Management LLC