Jennifer Palmer - 19 May 2026 Form 4 Insider Report for Star Equity Holdings, Inc. (STRR)

Reporting relationship: Director
Issuer ticker: STRR
Reported as of: 19 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 21 May 2026, 17:45:15 UTC
Prior SEC filing: 27 Mar 2026
Next SEC filing: 28 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Hannah Bible, as Attorney-in-Fact for Jennifer Palmer

Key filing fact

Jennifer Palmer filed Form 4 for Star Equity Holdings, Inc. (STRR) on 21 May 2026.

Key facts

This page summarizes Jennifer Palmer's Form 4 filing for Star Equity Holdings, Inc. (STRR).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 21 May 2026, 17:45.

Change

Previous filing in this sequence was filed on 27 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002029196 Primary reporting owner

Palmer Jennifer

Relationship: Director
Address: STAR EQUITY HOLDINGS, INC., 53 FOREST AVENUE, SUITE 101, OLD GREENWICH
Signature: /s/ Hannah Bible, as Attorney-in-Fact for Jennifer Palmer
Signature date: 21 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

STRR transaction

Series A Preferred Stock

Options Exercise

Transaction value
Shares: +460
Change %
Price
Shares after: 460
Date: 19 May 2026
Ownership: Direct
Footnotes: F1, F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

STRR transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value
Shares: -460
Change %: -100%
Price
Shares after: 0
Date: 19 May 2026
Ownership: Direct
Underlying class: Series A Preferred Stock
Underlying amount: 460
Exercise price
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

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").

Footnote F2

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

Footnote F3

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.