{"transactions":[{"id":4639558,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-10-13T20:48:22.000Z","date":"2026-10-13","kind":"sale","planned":true,"acquired":false,"shares":1000,"price":9.13,"value":9130.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and assumed by Clear Street LLC, providing for the sale of shares of the Issuer's Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share. Sales under the plan were permitted to begin on October 1, 2026, and the plan expires on October 1, 2028, unless terminated earlier."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were sold in multiple transactions at prices ranging from $9.12 to $9.29 on October 9, 2026, $9.12 to $9.29 on October 12, 2026, and $9.11 to $9.17 on October 13, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price such shares were sold."}],"balance_after":756937,"source":{"system":"sec-edgar","filing":"0001548312-26-000049","document":"wk-form4_1791924499.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1548312/000154831226000049/wk-form4_1791924499.xml","form_type":"4"}},{"id":4639557,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-10-13T20:48:22.000Z","date":"2026-10-12","kind":"sale","planned":true,"acquired":false,"shares":1000,"price":9.13,"value":9130.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and assumed by Clear Street LLC, providing for the sale of shares of the Issuer's Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share. Sales under the plan were permitted to begin on October 1, 2026, and the plan expires on October 1, 2028, unless terminated earlier."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were sold in multiple transactions at prices ranging from $9.12 to $9.29 on October 9, 2026, $9.12 to $9.29 on October 12, 2026, and $9.11 to $9.17 on October 13, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price such shares were sold."}],"balance_after":757937,"source":{"system":"sec-edgar","filing":"0001548312-26-000049","document":"wk-form4_1791924499.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1548312/000154831226000049/wk-form4_1791924499.xml","form_type":"4"}},{"id":4639556,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-10-13T20:48:22.000Z","date":"2026-10-09","kind":"sale","planned":true,"acquired":false,"shares":1000,"price":9.14,"value":9140.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and assumed by Clear Street LLC, providing for the sale of shares of the Issuer's Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share. Sales under the plan were permitted to begin on October 1, 2026, and the plan expires on October 1, 2028, unless terminated earlier."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were sold in multiple transactions at prices ranging from $9.12 to $9.29 on October 9, 2026, $9.12 to $9.29 on October 12, 2026, and $9.11 to $9.17 on October 13, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price such shares were sold."}],"balance_after":758937,"source":{"system":"sec-edgar","filing":"0001548312-26-000049","document":"wk-form4_1791924499.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1548312/000154831226000049/wk-form4_1791924499.xml","form_type":"4"}},{"id":4638108,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-10-08T21:52:07.000Z","date":"2026-10-08","kind":"sale","planned":true,"acquired":false,"shares":1000,"price":9.17,"value":9170.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and assumed by Clear Street LLC, providing for the sale of shares of the Issuer's Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share. Sales under the plan were permitted to begin on October 1, 2026, and the plan expires on October 1, 2028, unless terminated earlier."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were sold in multiple transactions at prices ranging from $9.16 to $9.22 on October 6, 2026, $9.16 to $9.23 on October 7, 2026, and $9.16 to $9.21 on October 8, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price such shares were sold."}],"balance_after":759937,"source":{"system":"sec-edgar","filing":"0001548312-26-000047","document":"wk-form4_1791496325.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1548312/000154831226000047/wk-form4_1791496325.xml","form_type":"4"}},{"id":4638107,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-10-08T21:52:07.000Z","date":"2026-10-07","kind":"sale","planned":true,"acquired":false,"shares":1000,"price":9.17,"value":9170.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and assumed by Clear Street LLC, providing for the sale of shares of the Issuer's Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share. Sales under the plan were permitted to begin on October 1, 2026, and the plan expires on October 1, 2028, unless terminated earlier."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were sold in multiple transactions at prices ranging from $9.16 to $9.22 on October 6, 2026, $9.16 to $9.23 on October 7, 2026, and $9.16 to $9.21 on October 8, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price such shares were sold."}],"balance_after":760937,"source":{"system":"sec-edgar","filing":"0001548312-26-000047","document":"wk-form4_1791496325.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1548312/000154831226000047/wk-form4_1791496325.xml","form_type":"4"}},{"id":4638106,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-10-08T21:52:07.000Z","date":"2026-10-06","kind":"sale","planned":true,"acquired":false,"shares":1000,"price":9.2,"value":9200.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and assumed by Clear Street LLC, providing for the sale of shares of the Issuer's Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share. Sales under the plan were permitted to begin on October 1, 2026, and the plan expires on October 1, 2028, unless terminated earlier."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were sold in multiple transactions at prices ranging from $9.16 to $9.22 on October 6, 2026, $9.16 to $9.23 on October 7, 2026, and $9.16 to $9.21 on October 8, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price such shares were sold."}],"balance_after":761937,"source":{"system":"sec-edgar","filing":"0001548312-26-000047","document":"wk-form4_1791496325.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1548312/000154831226000047/wk-form4_1791496325.xml","form_type":"4"}},{"id":4630934,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-10-05T21:31:01.000Z","date":"2026-10-05","kind":"sale","planned":true,"acquired":false,"shares":1000,"price":9.21,"value":9210.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and assumed by Clear Street LLC, providing for the sale of shares of the Issuer's Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share. Sales under the plan were permitted to begin on October 1, 2026, and the plan expires on October 1, 2028, unless terminated earlier."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were sold in multiple transactions at prices ranging from $9.13 to $9.31 on October 1, 2026, $9.22 to $9.31 on October 2, 2026, and $9.17 to $9.23 on October 5, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price such shares were sold."}],"balance_after":762937,"source":{"system":"sec-edgar","filing":"0001548312-26-000045","document":"wk-form4_1791235858.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1548312/000154831226000045/wk-form4_1791235858.xml","form_type":"4"}},{"id":4630933,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-10-05T21:31:01.000Z","date":"2026-10-02","kind":"sale","planned":true,"acquired":false,"shares":1000,"price":9.25,"value":9250.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and assumed by Clear Street LLC, providing for the sale of shares of the Issuer's Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share. Sales under the plan were permitted to begin on October 1, 2026, and the plan expires on October 1, 2028, unless terminated earlier."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were sold in multiple transactions at prices ranging from $9.13 to $9.31 on October 1, 2026, $9.22 to $9.31 on October 2, 2026, and $9.17 to $9.23 on October 5, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price such shares were sold."}],"balance_after":763937,"source":{"system":"sec-edgar","filing":"0001548312-26-000045","document":"wk-form4_1791235858.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1548312/000154831226000045/wk-form4_1791235858.xml","form_type":"4"}},{"id":4630932,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-10-05T21:31:01.000Z","date":"2026-10-01","kind":"sale","planned":true,"acquired":false,"shares":1000,"price":9.22,"value":9220.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and assumed by Clear Street LLC, providing for the sale of shares of the Issuer's Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share. Sales under the plan were permitted to begin on October 1, 2026, and the plan expires on October 1, 2028, unless terminated earlier."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were sold in multiple transactions at prices ranging from $9.13 to $9.31 on October 1, 2026, $9.22 to $9.31 on October 2, 2026, and $9.17 to $9.23 on October 5, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price such shares were sold."}],"balance_after":764937,"source":{"system":"sec-edgar","filing":"0001548312-26-000045","document":"wk-form4_1791235858.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1548312/000154831226000045/wk-form4_1791235858.xml","form_type":"4"}},{"id":681143,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Unit","published_at":"2026-08-19T22:05:24.000Z","date":"2026-08-18","kind":"exercise","planned":false,"acquired":false,"shares":860,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"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\")."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"This transaction represents the settlement of Restricted Stock Units in shares of Series A Preferred Stock on their scheduled vesting date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On August 18, 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 860 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on August 18, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On August 18, 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 860 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on August 18, 2026."}],"balance_after":0,"derivative":{"underlying":"Series A Preferred Stock","underlying_shares":860},"source":{"system":"sec-edgar","filing":"0001548312-26-000043","document":"wk-form4_1787177121.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000043/wk-form4_1787177121.xml","form_type":"4"}},{"id":681142,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-08-19T22:05:24.000Z","date":"2026-08-18","kind":"exercise","planned":false,"acquired":true,"shares":860,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction represents the settlement of Restricted Stock Units in shares of Series A Preferred Stock on their scheduled vesting date."}],"balance_after":765937,"source":{"system":"sec-edgar","filing":"0001548312-26-000043","document":"wk-form4_1787177121.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000043/wk-form4_1787177121.xml","form_type":"4"}},{"id":707932,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-07-16T22:12:22.000Z","date":"2026-07-15","kind":"grant","planned":false,"acquired":true,"shares":5388,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes 5,388 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated. Mr. Eberwein has elected to receive fifty percent of his base salary in the form of such restricted stock. Each share of restricted stock shall vest upon the first anniversary of the grant date and represents the right to receive, at settlement, one share of common stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (i) 26,513 shares of restricted stock and (ii) 6,750 RSUs credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated; and (iii) 1,097,839 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1131102,"source":{"system":"sec-edgar","filing":"0001548312-26-000041","document":"wk-form4_1784239938.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000041/wk-form4_1784239938.xml","form_type":"4"}},{"id":723826,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-29T22:22:02.000Z","date":"2026-06-29","kind":"purchase","planned":false,"acquired":true,"shares":5000,"price":11.01,"value":55050.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated; (ii) 6,750 RSUs; and (iii) 1,097,839 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1125714,"source":{"system":"sec-edgar","filing":"0001548312-26-000038","document":"wk-form4_1782771718.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000038/wk-form4_1782771718.xml","form_type":"4"}},{"id":723825,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-29T22:22:02.000Z","date":"2026-06-25","kind":"purchase","planned":false,"acquired":true,"shares":5000,"price":11.01,"value":55050.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated; (ii) 6,750 RSUs; and (iii) 1,092,839 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1120714,"source":{"system":"sec-edgar","filing":"0001548312-26-000038","document":"wk-form4_1782771718.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000038/wk-form4_1782771718.xml","form_type":"4"}},{"id":728741,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-23T21:51:01.000Z","date":"2026-06-22","kind":"purchase","planned":false,"acquired":true,"shares":4766,"price":11.16,"value":53188.56,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated; (ii) 6,750 RSUs; and (iii) 1,087,839 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1115714,"source":{"system":"sec-edgar","filing":"0001548312-26-000035","document":"wk-form4_1782251457.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000035/wk-form4_1782251457.xml","form_type":"4"}},{"id":728740,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-23T21:51:01.000Z","date":"2026-06-18","kind":"purchase","planned":false,"acquired":true,"shares":234,"price":11.01,"value":2576.34,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated; (ii) 6,750 RSUs; and (iii) 1,083,073 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1110948,"source":{"system":"sec-edgar","filing":"0001548312-26-000035","document":"wk-form4_1782251457.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000035/wk-form4_1782251457.xml","form_type":"4"}},{"id":733718,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-17T20:31:36.000Z","date":"2026-06-16","kind":"purchase","planned":false,"acquired":true,"shares":4994,"price":11.21,"value":55982.74,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated; (ii) 6,750 RSUs; and (iii) 1,082,839 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1110714,"source":{"system":"sec-edgar","filing":"0001548312-26-000033","document":"wk-form4_1781728293.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000033/wk-form4_1781728293.xml","form_type":"4"}},{"id":733717,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-17T20:31:36.000Z","date":"2026-06-15","kind":"purchase","planned":false,"acquired":true,"shares":6,"price":11.01,"value":66.06,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated; (ii) 6,750 RSUs; and (iii) 1,077,845 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1105720,"source":{"system":"sec-edgar","filing":"0001548312-26-000033","document":"wk-form4_1781728293.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000033/wk-form4_1781728293.xml","form_type":"4"}},{"id":739449,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-13T00:16:06.000Z","date":"2026-06-10","kind":"purchase","planned":false,"acquired":true,"shares":1884,"price":10.89,"value":20516.76,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $10.88 to $11.01 on June 10, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated; (ii) 6,750 RSUs; and (iii) 1,077,839 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1105714,"source":{"system":"sec-edgar","filing":"0001548312-26-000031","document":"wk-form4_1781309764.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000031/wk-form4_1781309764.xml","form_type":"4"}},{"id":744374,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-09T20:50:20.000Z","date":"2026-06-09","kind":"purchase","planned":false,"acquired":true,"shares":2849,"price":11.23,"value":31994.27,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $11.14 to $11.51 on June 8, 2026 and $11.01 to $11.26 on June 9, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,075,955 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1103830,"source":{"system":"sec-edgar","filing":"0001548312-26-000029","document":"wk-form4_1781038217.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000029/wk-form4_1781038217.xml","form_type":"4"}},{"id":744373,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-09T20:50:20.000Z","date":"2026-06-08","kind":"purchase","planned":false,"acquired":true,"shares":10000,"price":11.45,"value":114500.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $11.14 to $11.51 on June 8, 2026 and $11.01 to $11.26 on June 9, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,073,106 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1100981,"source":{"system":"sec-edgar","filing":"0001548312-26-000029","document":"wk-form4_1781038217.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000029/wk-form4_1781038217.xml","form_type":"4"}},{"id":744372,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-09T20:50:20.000Z","date":"2026-06-05","kind":"purchase","planned":false,"acquired":true,"shares":3443,"price":11.51,"value":39628.93,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,063,106 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1090981,"source":{"system":"sec-edgar","filing":"0001548312-26-000029","document":"wk-form4_1781038217.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000029/wk-form4_1781038217.xml","form_type":"4"}},{"id":749375,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-04T21:43:54.000Z","date":"2026-06-04","kind":"purchase","planned":false,"acquired":true,"shares":1430,"price":11.51,"value":16459.3,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,059,663 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1087538,"source":{"system":"sec-edgar","filing":"0001548312-26-000027","document":"wk-form4_1780609431.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000027/wk-form4_1780609431.xml","form_type":"4"}},{"id":749374,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-04T21:43:54.000Z","date":"2026-06-03","kind":"purchase","planned":false,"acquired":true,"shares":101,"price":11.51,"value":1162.51,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,058,233 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1086108,"source":{"system":"sec-edgar","filing":"0001548312-26-000027","document":"wk-form4_1780609431.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000027/wk-form4_1780609431.xml","form_type":"4"}},{"id":749373,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-04T21:43:54.000Z","date":"2026-06-02","kind":"purchase","planned":false,"acquired":true,"shares":4881,"price":11.61,"value":56668.41,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $11.41 to $11.61 on June 2, 2026. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,058,132 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1086007,"source":{"system":"sec-edgar","filing":"0001548312-26-000027","document":"wk-form4_1780609431.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000027/wk-form4_1780609431.xml","form_type":"4"}},{"id":756826,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-01T21:46:57.000Z","date":"2026-06-01","kind":"purchase","planned":false,"acquired":true,"shares":1482,"price":11.59,"value":17176.38,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $11.76 to $11.81 on May 28, 2026, $11.42 to $11.61 on May 29, 2026, and $11.40 to $11.61 on June 1, 2026, inclusive. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,053,251 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1081126,"source":{"system":"sec-edgar","filing":"0001548312-26-000023","document":"wk-form4_1780350414.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000023/wk-form4_1780350414.xml","form_type":"4"}},{"id":756825,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-01T21:46:57.000Z","date":"2026-05-29","kind":"purchase","planned":false,"acquired":true,"shares":3663,"price":11.61,"value":42527.43,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $11.76 to $11.81 on May 28, 2026, $11.42 to $11.61 on May 29, 2026, and $11.40 to $11.61 on June 1, 2026, inclusive. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,051,769 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1079644,"source":{"system":"sec-edgar","filing":"0001548312-26-000023","document":"wk-form4_1780350414.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000023/wk-form4_1780350414.xml","form_type":"4"}},{"id":756824,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-06-01T21:46:57.000Z","date":"2026-05-28","kind":"purchase","planned":false,"acquired":true,"shares":11201,"price":11.81,"value":132283.81,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $11.76 to $11.81 on May 28, 2026, $11.42 to $11.61 on May 29, 2026, and $11.40 to $11.61 on June 1, 2026, inclusive. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,048,106 shares of common stock. Excludes 2,000 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1075981,"source":{"system":"sec-edgar","filing":"0001548312-26-000023","document":"wk-form4_1780350414.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000023/wk-form4_1780350414.xml","form_type":"4"}},{"id":756823,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-06-01T21:46:57.000Z","date":"2026-05-28","kind":"purchase","planned":false,"acquired":true,"shares":310,"price":11.69,"value":3623.9,"ownership":{"direct":false,"nature":"By Contributory 401k"},"balance_after":810,"source":{"system":"sec-edgar","filing":"0001548312-26-000023","document":"wk-form4_1780350414.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000023/wk-form4_1780350414.xml","form_type":"4"}},{"id":761512,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-05-27T22:55:50.000Z","date":"2026-05-27","kind":"purchase","planned":false,"acquired":true,"shares":2288,"price":11.76,"value":26906.88,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $10.90 to $11.26 on May 22, 2026, $11.40 to $11.51 on May 26, 2026, and $11.51 to $11.76 on May 27, 2026, inclusive. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,036,905 shares of common stock. Excludes 1,690 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1064780,"source":{"system":"sec-edgar","filing":"0001548312-26-000021","document":"wk-form4_1779922548.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000021/wk-form4_1779922548.xml","form_type":"4"}},{"id":761511,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-05-27T22:55:50.000Z","date":"2026-05-26","kind":"purchase","planned":false,"acquired":true,"shares":2414,"price":11.51,"value":27785.14,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $10.90 to $11.26 on May 22, 2026, $11.40 to $11.51 on May 26, 2026, and $11.51 to $11.76 on May 27, 2026, inclusive. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,036,905 shares of common stock. Excludes 1,690 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1062492,"source":{"system":"sec-edgar","filing":"0001548312-26-000021","document":"wk-form4_1779922548.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000021/wk-form4_1779922548.xml","form_type":"4"}},{"id":761510,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-05-27T22:55:50.000Z","date":"2026-05-22","kind":"purchase","planned":false,"acquired":true,"shares":694,"price":11.06,"value":7675.64,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $10.90 to $11.26 on May 22, 2026, $11.40 to $11.51 on May 26, 2026, and $11.51 to $11.76 on May 27, 2026, inclusive. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (i) 21,125 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,036,905 shares of common stock. Excludes 1,690 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":1060078,"source":{"system":"sec-edgar","filing":"0001548312-26-000021","document":"wk-form4_1779922548.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000021/wk-form4_1779922548.xml","form_type":"4"}},{"id":767654,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Unit","published_at":"2026-05-21T21:55:42.000Z","date":"2026-05-19","kind":"exercise","planned":false,"acquired":false,"shares":860,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"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\")."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"This transaction represents the settlement of Restricted Stock Units in shares of Series A Preferred Stock on their scheduled vesting date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"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 860 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on May 19, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"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 860 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on May 19, 2026."}],"balance_after":0,"derivative":{"underlying":"Series A Preferred Stock","underlying_shares":860},"source":{"system":"sec-edgar","filing":"0001548312-26-000019","document":"wk-form4_1779400539.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000019/wk-form4_1779400539.xml","form_type":"4"}},{"id":767653,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-05-21T21:55:42.000Z","date":"2026-05-21","kind":"purchase","planned":false,"acquired":true,"shares":4198,"price":10.9,"value":45758.2,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $10.09 to $10.11 on May 19, 2026, $9.78 to $10.33 on May 20, 2026, and $10.82 to $10.96 on May 21, 2026, rounded to the nearest cent, inclusive. the Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."}],"balance_after":1059384,"source":{"system":"sec-edgar","filing":"0001548312-26-000019","document":"wk-form4_1779400539.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000019/wk-form4_1779400539.xml","form_type":"4"}},{"id":767652,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-05-21T21:55:42.000Z","date":"2026-05-20","kind":"purchase","planned":false,"acquired":true,"shares":406,"price":10.18,"value":4133.08,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $10.09 to $10.11 on May 19, 2026, $9.78 to $10.33 on May 20, 2026, and $10.82 to $10.96 on May 21, 2026, rounded to the nearest cent, inclusive. the Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."}],"balance_after":1055186,"source":{"system":"sec-edgar","filing":"0001548312-26-000019","document":"wk-form4_1779400539.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000019/wk-form4_1779400539.xml","form_type":"4"}},{"id":767651,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-05-21T21:55:42.000Z","date":"2026-05-19","kind":"purchase","planned":false,"acquired":true,"shares":13799,"price":10.09,"value":139231.91,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price, rounded to the nearest cent. These shares were purchased in multiple transactions at prices ranging from $10.09 to $10.11 on May 19, 2026, $9.78 to $10.33 on May 20, 2026, and $10.82 to $10.96 on May 21, 2026, rounded to the nearest cent, inclusive. the Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price such shares were purchased."}],"balance_after":1054780,"source":{"system":"sec-edgar","filing":"0001548312-26-000019","document":"wk-form4_1779400539.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000019/wk-form4_1779400539.xml","form_type":"4"}},{"id":767650,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-05-21T21:55:42.000Z","date":"2026-05-19","kind":"exercise","planned":false,"acquired":true,"shares":860,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction represents the settlement of Restricted Stock Units in shares of Series A Preferred Stock on their scheduled vesting date."}],"balance_after":765077,"source":{"system":"sec-edgar","filing":"0001548312-26-000019","document":"wk-form4_1779400539.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000019/wk-form4_1779400539.xml","form_type":"4"}},{"id":806895,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-04-16T21:20:24.000Z","date":"2026-04-15","kind":"grant","planned":false,"acquired":true,"shares":6504,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes 6,504 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated. Mr. Eberwein has elected to receive fifty percent of his base salary in the form of such restricted stock. Each share of restricted stock shall vest upon the first anniversary of the grant date and represents the right to receive, at settlement, one share of common stock."}],"balance_after":1040981,"source":{"system":"sec-edgar","filing":"0001548312-26-000012","document":"wk-form4_1776374420.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000012/wk-form4_1776374420.xml","form_type":"4"}},{"id":822664,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-04-01T22:23:29.000Z","date":"2026-03-30","kind":"sale","planned":false,"acquired":false,"shares":7722,"price":9.95,"value":76833.9,"ownership":{"direct":true},"balance_after":764217,"source":{"system":"sec-edgar","filing":"0001548312-26-000010","document":"wk-form4_1775082207.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000010/wk-form4_1775082207.xml","form_type":"4"}},{"id":826228,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Unit","published_at":"2026-03-27T21:37:39.000Z","date":"2026-03-25","kind":"exercise","planned":false,"acquired":false,"shares":740,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"This transaction represents the settlement of Restricted Stock Units in shares of common stock on their scheduled vesting date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On March 25, 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 common 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 740 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on March 25, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On March 25, 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 common 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 740 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on March 25, 2026."}],"balance_after":0,"derivative":{"underlying":"Common Stock.","underlying_shares":740},"source":{"system":"sec-edgar","filing":"0001548312-26-000008","document":"wk-form4_1774647456.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000008/wk-form4_1774647456.xml","form_type":"4"}},{"id":826227,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-03-27T21:37:39.000Z","date":"2026-03-27","kind":"sale","planned":false,"acquired":false,"shares":7354,"price":9.98,"value":73392.92,"ownership":{"direct":true},"balance_after":771939,"source":{"system":"sec-edgar","filing":"0001548312-26-000008","document":"wk-form4_1774647456.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000008/wk-form4_1774647456.xml","form_type":"4"}},{"id":826226,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-03-27T21:37:39.000Z","date":"2026-03-26","kind":"sale","planned":false,"acquired":false,"shares":424,"price":9.83,"value":4167.92,"ownership":{"direct":true},"balance_after":779293,"source":{"system":"sec-edgar","filing":"0001548312-26-000008","document":"wk-form4_1774647456.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000008/wk-form4_1774647456.xml","form_type":"4"}},{"id":826225,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2026-03-27T21:37:39.000Z","date":"2026-03-25","kind":"sale","planned":false,"acquired":false,"shares":7500,"price":9.95,"value":74625.0,"ownership":{"direct":true},"balance_after":779717,"source":{"system":"sec-edgar","filing":"0001548312-26-000008","document":"wk-form4_1774647456.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000008/wk-form4_1774647456.xml","form_type":"4"}},{"id":826224,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2026-03-27T21:37:39.000Z","date":"2026-03-25","kind":"exercise","planned":false,"acquired":true,"shares":740,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction represents the settlement of Restricted Stock Units in shares of common stock on their scheduled vesting date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes (i) 14,621 shares of restricted stock credited to the Reporting Person's account under the Issuer's 2009 Incentive Plan; (ii) 6,750 RSUs; and (iii) 1,013,106 shares of common stock. Excludes 1,690 shares indirectly owned in contributory 401(k) and IRA accounts. Each share of restricted stock and each RSU shall vest upon the first anniversary of the grant date and represents the right to receive, at settlement, one share of common stock."}],"balance_after":1034477,"source":{"system":"sec-edgar","filing":"0001548312-26-000008","document":"wk-form4_1774647456.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000154831226000008/wk-form4_1774647456.xml","form_type":"4"}},{"id":830656,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-24T00:43:17.000Z","date":"2026-03-19","kind":"grant","planned":false,"acquired":true,"shares":20210,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On January 24, 2025 (the \"Grant Date\"), the restricted stock units (\"RSUs\") were granted to the Reporting Person under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated (the \"2009 Incentive Plan\") for which the performance conditions related to vesting were satisfied as of March 19, 2026. 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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 675 Restricted Stock Units. 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These Restricted Stock Units were received in exchange for Star Restricted Stock Units representing the right to receive, at settlement, 2,935 shares of Star common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The Restricted Stock Units granted on November 22, 2024 (the \"Grant Date\") are scheduled to vest upon the first anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The Restricted Stock Units granted on November 22, 2024 (the \"Grant Date\") are scheduled to vest upon the first anniversary of the Grant Date."}],"balance_after":675,"derivative":{"underlying":"Common Stock.","underlying_shares":675},"source":{"system":"sec-edgar","filing":"0001210708-25-000063","document":"wk-form4_1755895033.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000121070825000063/wk-form4_1755895033.xml","form_type":"4"}},{"id":1057650,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Series A Preferred Stock","published_at":"2025-08-22T20:37:18.000Z","date":"2025-08-22","kind":"grant","planned":false,"acquired":true,"shares":1182414,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Acquired pursuant to the Merger in exchange for 1,182,414 shares of Star 10% Series A Cumulative Perpetual Preferred Stock."}],"balance_after":1182414,"source":{"system":"sec-edgar","filing":"0001210708-25-000063","document":"wk-form4_1755895033.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000121070825000063/wk-form4_1755895033.xml","form_type":"4"}},{"id":1057649,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock.","published_at":"2025-08-22T20:37:18.000Z","date":"2025-08-22","kind":"grant","planned":false,"acquired":true,"shares":188686,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Received in exchange for 820,374 shares of Star Equity Holdings, Inc. (\"Star\") common stock pursuant to the Agreement and Plan of Merger, dated as of May 21, 2025 (the \"Merger Agreement\"), by and among Star, Hudson Global, Inc. (\"Hudson\") and HSON Merger Sub, Inc., a wholly owned subsidiary of Hudson (\"Merger Sub\"), providing for the exchange of 0.23 shares of Hudson common stock for each share of Star common stock on the effective date of the merger (the \"Merger\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (i) 118,464 Share Units credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated, and each such share unit is the economic equivalent of one share of Common Stock and is payable only in Common Stock upon the later to occur of (A) the satisfaction of certain performance vesting conditions and (B) up to 90 days after the Reporting Person's separation from service; (ii) 27,156 Share Units credited to the Reporting Person's account under the Hudson Global, Inc. Director Deferred Share Plan, and each Share Unit is the economic equivalent of one share of Common Stock and is payable only in Common Stock up to 90 days after a director's separation from service; and (iii) 274,378 shares of common stock."}],"balance_after":608684,"source":{"system":"sec-edgar","filing":"0001210708-25-000063","document":"wk-form4_1755895033.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1210708/000121070825000063/wk-form4_1755895033.xml","form_type":"4"}},{"id":1058867,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Restricted Stock Unit","published_at":"2025-08-22T16:23:30.000Z","date":"2025-08-22","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":860,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"These Restricted Stock Units each represent the right to receive, at settlement, one share of Star 10% Series A Cumulative Perpetual Preferred Stock. These Restricted Stock Units were assumed by\nHudson in the Merger and exchanged for one Hudson Restricted Stock Unit for each Star Restricted Stock Unit."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"These Restricted Stock Units each represent the right to receive, at settlement, one share of Star 10% Series A Cumulative Perpetual Preferred Stock. These Restricted Stock Units were assumed by\nHudson in the Merger and exchanged for one Hudson Restricted Stock Unit for each Star Restricted Stock Unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The Restricted Stock Units granted on August 18, 2025 (the \"Second Preferred Grant Date\") are scheduled to vest upon the first anniversary of the Second Preferred Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"The Restricted Stock Units granted on August 18, 2025 (the \"Second Preferred Grant Date\") are scheduled to vest upon the first anniversary of the Second Preferred Grant Date."}],"balance_after":0,"derivative":{"underlying":"10% Series A Cumulative Perpetual Preferred Stock","underlying_shares":860},"source":{"system":"sec-edgar","filing":"0000707388-25-000148","document":"wk-form4_1755894205.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000148/wk-form4_1755894205.xml","form_type":"4"}},{"id":1058866,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Restricted Stock Unit","published_at":"2025-08-22T16:23:30.000Z","date":"2025-08-22","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":860,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"These Restricted Stock Units each represent the right to receive, at settlement, one share of Star 10% Series A Cumulative Perpetual Preferred Stock. These Restricted Stock Units were assumed by\nHudson in the Merger and exchanged for one Hudson Restricted Stock Unit for each Star Restricted Stock Unit."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"These Restricted Stock Units each represent the right to receive, at settlement, one share of Star 10% Series A Cumulative Perpetual Preferred Stock. These Restricted Stock Units were assumed by\nHudson in the Merger and exchanged for one Hudson Restricted Stock Unit for each Star Restricted Stock Unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The Restricted Stock Units granted on May 19, 2025 (the \"Preferred Grant Date\") are scheduled to vest upon the first anniversary of the Preferred Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"The Restricted Stock Units granted on May 19, 2025 (the \"Preferred Grant Date\") are scheduled to vest upon the first anniversary of the Preferred Grant Date."}],"balance_after":0,"derivative":{"underlying":"10% Series A Cumulative Perpetual Preferred Stock","underlying_shares":860},"source":{"system":"sec-edgar","filing":"0000707388-25-000148","document":"wk-form4_1755894205.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000148/wk-form4_1755894205.xml","form_type":"4"}},{"id":1058865,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Restricted Stock Unit","published_at":"2025-08-22T16:23:30.000Z","date":"2025-08-22","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":3221,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"These Restricted Stock Units each represent the right to receive, at settlement, one share of Star common stock. These Restricted Stock Units were assumed by Hudson in the Merger and exchanged for .23 Hudson Restricted Stock Units for each Star Restricted Stock Unit."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These Restricted Stock Units each represent the right to receive, at settlement, one share of Star common stock. These Restricted Stock Units were assumed by Hudson in the Merger and exchanged for .23 Hudson Restricted Stock Units for each Star Restricted Stock Unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The Restricted Stock Units granted on March 25, 2025 (the \"Second Grant Date\") are scheduled to vest upon the first anniversary of the Second Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The Restricted Stock Units granted on March 25, 2025 (the \"Second Grant Date\") are scheduled to vest upon the first anniversary of the Second Grant Date."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":3221},"source":{"system":"sec-edgar","filing":"0000707388-25-000148","document":"wk-form4_1755894205.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000148/wk-form4_1755894205.xml","form_type":"4"}},{"id":1058864,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Restricted Stock Unit","published_at":"2025-08-22T16:23:30.000Z","date":"2025-08-22","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":2935,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"These Restricted Stock Units each represent the right to receive, at settlement, one share of Star common stock. These Restricted Stock Units were assumed by Hudson in the Merger and exchanged for .23 Hudson Restricted Stock Units for each Star Restricted Stock Unit."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These Restricted Stock Units each represent the right to receive, at settlement, one share of Star common stock. These Restricted Stock Units were assumed by Hudson in the Merger and exchanged for .23 Hudson Restricted Stock Units for each Star Restricted Stock Unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The Restricted Stock Units granted on November 22, 2024 (the \"Grant Date\") are scheduled to vest upon the first anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The Restricted Stock Units granted on November 22, 2024 (the \"Grant Date\") are scheduled to vest upon the first anniversary of the Grant Date."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":2935},"source":{"system":"sec-edgar","filing":"0000707388-25-000148","document":"wk-form4_1755894205.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000148/wk-form4_1755894205.xml","form_type":"4"}},{"id":1058863,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"10% Series A Cumulative Perpetual Preferred Stock","published_at":"2025-08-22T16:23:30.000Z","date":"2025-08-22","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":1182414,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Disposed of pursuant to the Agreement and Plan of Merger, dated as of May 21, 2025 (the \"Merger Agreement\"), by and among Star Equity Holdings, Inc. (\"Star\"), Hudson Global, Inc. (\"Hudson\") and HSON Merger Sub, Inc., a wholly owned subsidiary of Hudson (\"Merger Sub\"), in exchange for .23 shares of Hudson common stock for each share of Star common stock on the effective date of the merger (the \"Merger\") and one share of Hudson Series A Preferred Stock for each share of Star 10% Series A Cumulative Perpetual Preferred Stock on the effective date of the Merger."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000707388-25-000148","document":"wk-form4_1755894205.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000148/wk-form4_1755894205.xml","form_type":"4"}},{"id":1058862,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2025-08-22T16:23:30.000Z","date":"2025-08-22","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":820374,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Disposed of pursuant to the Agreement and Plan of Merger, dated as of May 21, 2025 (the \"Merger Agreement\"), by and among Star Equity Holdings, Inc. (\"Star\"), Hudson Global, Inc. (\"Hudson\") and HSON Merger Sub, Inc., a wholly owned subsidiary of Hudson (\"Merger Sub\"), in exchange for .23 shares of Hudson common stock for each share of Star common stock on the effective date of the merger (the \"Merger\") and one share of Hudson Series A Preferred Stock for each share of Star 10% Series A Cumulative Perpetual Preferred Stock on the effective date of the Merger."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000707388-25-000148","document":"wk-form4_1755894205.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000148/wk-form4_1755894205.xml","form_type":"4"}},{"id":1064677,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Restricted Stock Unit","published_at":"2025-08-18T19:21:00.000Z","date":"2025-08-18","kind":"grant","planned":false,"acquired":true,"shares":860,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Award of Restricted Stock Units made in accordance with the Company's 2018 Incentive Plan, as amended. The number of Restricted Stock Units granted was determined using the liquidation preference price of STRRP of $10.00."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of 10% Series A Cumulative Perpetual Preferred Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Award of Restricted Stock Units made in accordance with the Company's 2018 Incentive Plan, as amended. The number of Restricted Stock Units granted was determined using the liquidation preference price of STRRP of $10.00."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The Restricted Stock Units granted on August 18, 2025 (the \"Grant Date\") are scheduled to vest upon the first anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The Restricted Stock Units granted on August 18, 2025 (the \"Grant Date\") are scheduled to vest upon the first anniversary of the Grant Date."}],"balance_after":860,"derivative":{"underlying":"10% Series A Cumulative Perpetual Preferred Stock","underlying_shares":860},"source":{"system":"sec-edgar","filing":"0000707388-25-000123","document":"wk-form4_1755559255.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000123/wk-form4_1755559255.xml","form_type":"4"}},{"id":1134420,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Restricted Stock Unit","published_at":"2025-05-27T16:20:25.000Z","date":"2025-05-23","kind":"exercise","planned":false,"acquired":false,"shares":1912,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"shares","element":"transactionShares","label":"F1","text":"On June 12, 2024, the Issuer effected a 1-for-5 reverse stock split (the \"Reverse Stock Split\"). The number of securities reported on this Form 4 have been adjusted to reflect the Reverse Stock Split."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On May 23, 2024, the Reporting Person was granted 1,912 Restricted Stock Units (after giving effect to the Reverse Stock Split).  As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on May 23, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On May 23, 2024, the Reporting Person was granted 1,912 Restricted Stock Units (after giving effect to the Reverse Stock Split).  As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on May 23, 2025."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"On June 12, 2024, the Issuer effected a 1-for-5 reverse stock split (the \"Reverse Stock Split\"). The number of securities reported on this Form 4 have been adjusted to reflect the Reverse Stock Split."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":1912},"source":{"system":"sec-edgar","filing":"0000707388-25-000093","document":"wk-form4_1748377218.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000093/wk-form4_1748377218.xml","form_type":"4"}},{"id":1134419,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2025-05-27T16:20:25.000Z","date":"2025-05-23","kind":"exercise","planned":false,"acquired":true,"shares":1912,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On June 12, 2024, the Issuer effected a 1-for-5 reverse stock split (the \"Reverse Stock Split\"). The number of securities reported on this Form 4 have been adjusted to reflect the Reverse Stock Split."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On June 12, 2024, the Issuer effected a 1-for-5 reverse stock split (the \"Reverse Stock Split\"). The number of securities reported on this Form 4 have been adjusted to reflect the Reverse Stock Split."}],"balance_after":820374,"source":{"system":"sec-edgar","filing":"0000707388-25-000093","document":"wk-form4_1748377218.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000093/wk-form4_1748377218.xml","form_type":"4"}},{"id":1139761,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Restricted Stock Unit","published_at":"2025-05-21T16:13:02.000Z","date":"2025-05-19","kind":"grant","planned":false,"acquired":true,"shares":860,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of 10% Series A Cumulative Perpetual Preferred Stock."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Award of Restricted Stock Units made in accordance with the Company's 2018 Incentive Plan, as amended. The number of Restricted Stock Units granted was determined using the liquidation preference price of STRRP of $10.00."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Award of Restricted Stock Units made in accordance with the Company's 2018 Incentive Plan, as amended. The number of Restricted Stock Units granted was determined using the liquidation preference price of STRRP of $10.00."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The Restricted Stock Units granted on May 19, 2025 (the \"Grant Date\") are scheduled to vest upon the first anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The Restricted Stock Units granted on May 19, 2025 (the \"Grant Date\") are scheduled to vest upon the first anniversary of the Grant Date."}],"balance_after":860,"derivative":{"underlying":"10% Series A Cumulative Perpetual Preferred Stock","underlying_shares":860},"source":{"system":"sec-edgar","filing":"0000707388-25-000089","document":"wk-form4_1747858374.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000089/wk-form4_1747858374.xml","form_type":"4"}},{"id":1190240,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Restricted Stock Unit","published_at":"2025-03-27T17:08:41.000Z","date":"2025-03-27","kind":"exercise","planned":false,"acquired":false,"shares":1914,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"shares","element":"transactionShares","label":"F1","text":"On June 12, 2024, the Issuer effected a 1-for-5 reverse stock split (the \"Reverse Stock Split\"). The number of securities reported on this Form 4 have been adjusted to reflect the Reverse Stock Split."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 27, 2024, the Reporting Person was granted 1,914 Restricted Stock Units (after giving effect to the Reverse Stock Split).  As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on March 27, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On March 27, 2024, the Reporting Person was granted 1,914 Restricted Stock Units (after giving effect to the Reverse Stock Split).  As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on March 27, 2025."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"On June 12, 2024, the Issuer effected a 1-for-5 reverse stock split (the \"Reverse Stock Split\"). The number of securities reported on this Form 4 have been adjusted to reflect the Reverse Stock Split."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":1914},"source":{"system":"sec-edgar","filing":"0000707388-25-000059","document":"wk-form4_1743109715.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000059/wk-form4_1743109715.xml","form_type":"4"}},{"id":1190239,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2025-03-27T17:08:41.000Z","date":"2025-03-27","kind":"exercise","planned":false,"acquired":true,"shares":1914,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On June 12, 2024, the Issuer effected a 1-for-5 reverse stock split (the \"Reverse Stock Split\"). The number of securities reported on this Form 4 have been adjusted to reflect the Reverse Stock Split."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On June 12, 2024, the Issuer effected a 1-for-5 reverse stock split (the \"Reverse Stock Split\"). The number of securities reported on this Form 4 have been adjusted to reflect the Reverse Stock Split."}],"balance_after":818462,"source":{"system":"sec-edgar","filing":"0000707388-25-000059","document":"wk-form4_1743109715.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000059/wk-form4_1743109715.xml","form_type":"4"}},{"id":1191716,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Restricted Stock Unit","published_at":"2025-03-26T18:10:21.000Z","date":"2025-03-25","kind":"grant","planned":false,"acquired":true,"shares":3221,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Award of Restricted Stock Units made in accordance with the Company's 2018 Incentive Plan, as amended. The number of Restricted Stock Units granted was determined using the closing sales price per share on March 24, 2025 of $2.67."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Award of Restricted Stock Units made in accordance with the Company's 2018 Incentive Plan, as amended. The number of Restricted Stock Units granted was determined using the closing sales price per share on March 24, 2025 of $2.67."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The Restricted Stock Units granted on March 25, 2025 (the \"Grant Date\") are scheduled to vest upon the first anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The Restricted Stock Units granted on March 25, 2025 (the \"Grant Date\") are scheduled to vest upon the first anniversary of the Grant Date."}],"balance_after":3221,"derivative":{"underlying":"Common Stock","underlying_shares":3221},"source":{"system":"sec-edgar","filing":"0000707388-25-000057","document":"wk-form4_1743027015.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000057/wk-form4_1743027015.xml","form_type":"4"}},{"id":1352073,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21580,"kind":"person","name":"Eberwein Jeffrey E.","position":1,"cik":"0001548312","reported_name":"Eberwein Jeffrey E.","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Executive Chairman"}}],"security":"Restricted Stock Unit","published_at":"2024-11-26T16:07:33.000Z","date":"2024-11-22","kind":"grant","planned":false,"acquired":true,"shares":2935,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Award of Restricted Stock Units made in accordance with the Company's 2018 Incentive Plan, as amended.  The number of Restricted Stock Units was determined using the closing sales price per share on November 21, 2024 of $2.93."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The Restricted Stock Units granted on November 22, 2024 (the \"Grant Date\") are scheduled to vest on the one year anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The Restricted Stock Units granted on November 22, 2024 (the \"Grant Date\") are scheduled to vest on the one year anniversary of the Grant Date."}],"balance_after":2935,"derivative":{"underlying":"Common Stock","underlying_shares":2935},"source":{"system":"sec-edgar","filing":"0000707388-24-000201","document":"wk-form4_1732655245.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738824000201/wk-form4_1732655245.xml","form_type":"4"}}],"next_cursor":"2024-11-26T16:07:33.000000Z,1352073"}