Director settles 485 RSUs into preferred shares at Star Equity (HSON)

Rhea-AI Filing Summary

Star Equity Holdings director Louis A. Parks settled equity awards into preferred shares. On May 19, 2026, he exercised 485 Restricted Stock Units, receiving 485 shares of the company’s 10.0% Series A Cumulative Perpetual Preferred Stock. These RSUs stemmed from awards at Star Operating Companies that were converted in connection with a prior merger, and this filing reflects their scheduled full vesting and settlement rather than any open-market purchase or sale.

Insider Trade Summary

485 shares exercised/converted

Mixed 2 txns

Insider Parks Louis A.

Role null

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit	485	$0.00	--
Exercise	Series A Preferred Stock	485	$0.00	--

Holdings After Transaction: Restricted Stock Unit — 0 shares (Direct, null); Series A Preferred Stock — 485 shares (Direct, null)

Footnotes (1)

1. Each Restricted Stock Unit represents the right to receive, at settlement, one share of the Issuer's 10.0% Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share (the "Series A Preferred Stock"). This transaction represents the settlement of Restricted Stock Units in shares of Series A Preferred Stock on their scheduled vesting date. On May 19, 2025, the Reporting Person was granted Restricted Stock Units by Star Operating Companies, Inc. ("SOC"), each of which represented the right to receive, at settlement, one share of SOC Series A Preferred Stock ("SOC RSUs"). Pursuant to the Agreement and Plan of Merger, dated as of May 21, 2025, by and among SOC, the Issuer and HSON Merger Sub, Inc., a wholly owned subsidiary of the Issuer, the Reporting Person's SOC RSUs were exchanged for 485 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on May 19, 2026.

Key Figures

RSUs exercised: 485 units Preferred shares received: 485 shares Dividend rate: 10.0% +1 more

4 metrics

RSUs exercised 485 units Restricted Stock Units settled on May 19, 2026

Preferred shares received 485 shares 10.0% Series A Cumulative Perpetual Preferred Stock

Dividend rate 10.0% Series A Cumulative Perpetual Preferred Stock

Shares held after transaction 485 shares Series A Preferred Stock held directly by reporting person

Key Terms

Restricted Stock Unit, 10.0% Series A Cumulative Perpetual Preferred Stock, Agreement and Plan of Merger

3 terms

Restricted Stock Unit financial

"Each Restricted Stock Unit represents the right to receive, at settlement, one share..."

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

10.0% Series A Cumulative Perpetual Preferred Stock financial

"one share of the Issuer's 10.0% Series A Cumulative Perpetual Preferred Stock..."

Agreement and Plan of Merger financial

"Pursuant to the Agreement and Plan of Merger, dated as of May 21, 2025..."

An Agreement and Plan of Merger is a formal document where two companies agree to combine into one, outlining how the process will happen. It’s like a step-by-step plan for merging, and it matters because it shows both sides have agreed on the details before the official transition takes place.

Form 4 Insider Transactions: What Each Field Means →

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).

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^*

Parks Louis A.

(Last) (First) (Middle)

STAR EQUITY HOLDINGS, INC.

53 FOREST AVENUE, SUITE 101

(Street)

OLD GREENWICH CONNECTICUT 06870

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Star Equity Holdings, Inc. [ STRR ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

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

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

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

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
Series A Preferred Stock	05/19/2026		M		485	A	(1)(2)	485	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
Restricted Stock Unit	(1)(2)	05/19/2026		M			485	(3)	(3)	Series A Preferred Stock	485	(1)	0	D

Explanation of Responses:

1. Each Restricted Stock Unit represents the right to receive, at settlement, one share of the Issuer's 10.0% Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share (the "Series A Preferred Stock").

2. This transaction represents the settlement of Restricted Stock Units in shares of Series A Preferred Stock on their scheduled vesting date.

3. On May 19, 2025, the Reporting Person was granted Restricted Stock Units by Star Operating Companies, Inc. ("SOC"), each of which represented the right to receive, at settlement, one share of SOC Series A Preferred Stock ("SOC RSUs"). Pursuant to the Agreement and Plan of Merger, dated as of May 21, 2025, by and among SOC, the Issuer and HSON Merger Sub, Inc., a wholly owned subsidiary of the Issuer, the Reporting Person's SOC RSUs were exchanged for 485 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on May 19, 2026.

Remarks:

	s/ Hannah Bible, as Attorney-in-Fact for Louis Parks	05/21/2026
	** 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).
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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Louis A. Parks report for HSON/Star Equity?

Louis A. Parks settled equity awards into stock. He converted 485 Restricted Stock Units into 485 shares of 10.0% Series A Cumulative Perpetual Preferred Stock as part of scheduled vesting, rather than through an open-market trade.

How many Star Equity preferred shares did the director receive in this Form 4?

The director received 485 preferred shares. The filing shows 485 Restricted Stock Units exercised into 485 shares of 10.0% Series A Cumulative Perpetual Preferred Stock, leaving 485 preferred shares held directly after the transaction.

What type of security did the Star Equity RSUs convert into?

The RSUs converted into 10.0% Series A Cumulative Perpetual Preferred Stock. Each Restricted Stock Unit represented the right to receive one share of this preferred stock upon settlement on the scheduled vesting date.

Was the Parks Form 4 transaction an open-market buy or sell of HSON stock?

No, it was not an open-market trade. The Form 4 shows an exercise or conversion of derivative securities, where Restricted Stock Units vested and settled into preferred shares according to their terms.

What does the Form 4 say about the vesting of Louis A. Parks’ RSUs?

The filing notes that 100% of the 485 Restricted Stock Units vested on May 19, 2026. These RSUs originated from Star Operating Companies awards exchanged in a prior merger agreement before settling into preferred shares.