Star Equity Holdings (HSON) director settles 460 preferred RSUs

Rhea-AI Filing Summary

Star Equity Holdings director Jennifer Palmer exercised restricted stock units into preferred shares. On May 19, 2026, 460 Restricted Stock Units fully vested and were settled into 460 shares of 10.0% Series A Cumulative Perpetual Preferred Stock. These RSUs were originally granted on May 19, 2025 by Star Operating Companies, Inc. and later exchanged into 460 RSUs under an Agreement and Plan of Merger dated May 21, 2025. Following the settlement, Palmer directly holds 460 shares of Series A Preferred Stock and no remaining RSUs from this grant, reflecting a routine, compensation-related conversion rather than an open-market trade.

Insider Trade Summary

460 shares exercised/converted

Mixed 2 txns

Insider Palmer Jennifer

Role null

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit	460	$0.00	--
Exercise	Series A Preferred Stock	460	$0.00	--

Holdings After Transaction: Restricted Stock Unit — 0 shares (Direct, null); Series A Preferred Stock — 460 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 460 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on May 19, 2026.

Key Figures

RSUs settled: 460 units Preferred shares received: 460 shares Price per share: $0.0000 per share +1 more

4 metrics

RSUs settled 460 units Restricted Stock Units vested and settled on May 19, 2026

Preferred shares received 460 shares 10.0% Series A Cumulative Perpetual Preferred Stock received at settlement

Price per share $0.0000 per share Reported transaction price for conversion of RSUs

Shares held after transaction 460 shares Total Series A Preferred Stock directly owned following settlement

Key Terms

Restricted Stock Unit, 10.0% Series A Cumulative Perpetual Preferred Stock, Agreement and Plan of Merger, vesting date, +1 more

5 terms

Restricted Stock Unit financial

"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"

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, par value $0.001 per share"

Agreement and Plan of Merger financial

"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."

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.

vesting date financial

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

Series A Preferred Stock financial

"shares of the Issuer's 10.0% Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share"

Series A preferred stock is a type of ownership share in a company that gives investors certain advantages, such as priority in receiving profits or getting their money back if the company is sold or goes bankrupt. It is often issued during early funding stages to attract investors by offering more security than common shares. This stock matters to investors because it provides a safer way to invest while still holding potential for future gains.

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^*

Palmer Jennifer

(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		460	A	(1)(2)	460	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			460	(3)	(3)	Series A Preferred Stock	460	(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 460 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 Jennifer Palmer	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 Star Equity Holdings (STRR) report for Jennifer Palmer?

Star Equity Holdings reported that director Jennifer Palmer settled 460 Restricted Stock Units into 460 shares of 10.0% Series A Cumulative Perpetual Preferred Stock, reflecting a routine compensation-related conversion rather than an open-market purchase or sale of shares.

How many Series A Preferred shares did Jennifer Palmer receive in this Form 4 for STRR?

Jennifer Palmer received 460 shares of Star Equity’s 10.0% Series A Cumulative Perpetual Preferred Stock. These shares came from the settlement of 460 Restricted Stock Units that fully vested on May 19, 2026 as part of her director compensation.

Were Jennifer Palmer’s Star Equity (HSON/STRR) transactions open-market buys or sells?

The transactions were not open-market buys or sells. They were coded as derivative exercises, reflecting the vesting and settlement of Restricted Stock Units into preferred shares, with no reported open-market purchase or sale of Star Equity Holdings stock.

What is the origin of the 460 RSUs reported in this Star Equity Form 4?

The 460 RSUs originated from a May 19, 2025 grant by Star Operating Companies, Inc. Those SOC RSUs were later exchanged into 460 Star Equity RSUs under an Agreement and Plan of Merger dated May 21, 2025, then vested and settled in 2026.

What does the vesting schedule show for Jennifer Palmer’s RSUs at Star Equity Holdings?

For this specific grant, the vesting schedule shows that 100% of the 460 Restricted Stock Units vested on May 19, 2026. Upon vesting, they were immediately settled into 460 shares of 10.0% Series A Cumulative Perpetual Preferred Stock.

How many RSUs remain outstanding for Jennifer Palmer after this Star Equity transaction?

After this transaction, the filing shows zero Restricted Stock Units remaining from this grant, with total RSUs following the transaction reported as 0.0000. Palmer continues to directly hold the 460 Series A Preferred shares received at settlement.