13D Filings
Star Equity Holdings, Inc.
STRR
Amendment
Ownership

30.70%

Total Shares

1,149,289

Issuer CIK

1210708

Event Date

Jun 24, 2026

Accepted

Jun 29, 2026, 06:23 PM

Reporting Persons (1)
NameType% of ClassAggregateSole VotingShared Voting
JEFFREY E. EBERWEIN
Individual
30.70%1,149,2891,149,2890
Disclosure Items (5)

Security Title

Common Stock, par value $0.001 per share

Issuer Name

Star Equity Holdings, Inc.

Issuer Address

53 FOREST AVENUE, SUITE 101, OLD GREENWICH, CT, 06870

Item 3 is hereby amended and restated as follows: The aggregate purchase price of the 1,149,289 Shares beneficially owned by Mr. Eberwein is approximately $22,560,917, excluding brokerage commissions. In addition to the 1,149,289 Shares, Mr. Eberwein owns 765,077 shares of the Issuer's 10% Series A Cumulative Perpetual Preferred Stock.

Item 4 is hereby amended to add the following: On June 25, 2026 Mr. Eberwein (the "Seller") entered into a Rule 10b5-1 of the Securities Exchange Act of 1934 ("Exchange Act") Sales Trading Plan ("10b5-1 Sales Plan") with Ladenburg Thalmann & Co. ("Broker") for the purpose of establishing a trading plan to effect sales of shares of Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share, ("Preferred Stock") of the Issuer in compliance with all applicable laws, including, without limitation, Section 10(b) of the Exchange Act and the rules and regulations promulgated thereunder, including, but not limited to, Rule 10b5-1. The Broker is authorized to begin selling Preferred Stock pursuant to the 10b5-1 Sales Plan on October 1, 2026. The 10b5-1 Sales Plan expires on October 1, 2028, unless terminated earlier under certain conditions. There can be no assurance as to how many preferred shares, if any, will be sold pursuant to the 10b5-1 Sales Plan or at what price any such shares of Preferred Stock will be sold. The Seller may in the future modify, amend, suspend, or terminate the 10b5-1 Sales Plan in its sole discretion, and the Seller does not undertake any obligation to disclose any such modification, amendment, suspension, or termination. Notwithstanding, the Broker shall not sell Preferred Stock under the 10b5-1 Sales Plan, while the Broker is selling Preferred Stock as sales agent for the Issuer's ATM offering program. A copy of the 10b5-1 Sales Plan is attached hereto as Exhibit 99.2 and is incorporated herein by reference.

Percentage of Class

Items 5(a)-(c) are hereby amended and restated to read as follows: The aggregate percentage of Shares reported owned by the Reporting Person is based upon 3,748,404 Shares, which is inclusive of 3,698,954 shares outstanding as of June 29, 2026 in addition to 49,450 Warrants attributed to the Reporting Person. The total number of Shares outstanding is based on information provided by the Issuer to the Reporting Person. As of the close of business on June 29, 2026, Mr. Eberwein beneficially owned 1,149,289 Shares. Percentage: 30.66%

Number of Shares

1. Sole power to vote or direct vote: 1,149,289 2. Shared power to vote or direct vote: 0 3. Sole power to dispose or direct the disposition: 1,149,289 4. Shared power to dispose or direct the disposition: 0

Transactions

Jeff Eberwein's transactions in the Shares since the last Schedule 13D/A filed on June 1, 2026 are set forth in Schedule A, attached hereto as Exhibit 99.1, and is incorporated herein by reference.

Exhibit 99.1 - Schedule A; Exhibit 99.2 - Rule 10b5-1 Sales Trading Plan, dated June 25, 2026, by and between Jeffrey E. Eberwein and Ladenburg Thalmann & Co.

Star Equity Holdings, Inc. — Schedule 13D | 13D Filings