{"transactions":[{"id":681746,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21728,"kind":"person","name":"Parks Louis A.","position":1,"cik":"0002029214","reported_name":"Parks Louis A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Unit","published_at":"2026-08-19T22:06:55.000Z","date":"2026-08-18","kind":"exercise","planned":false,"acquired":false,"shares":485,"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 485 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 485 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":485},"source":{"system":"sec-edgar","filing":"0002029214-26-000011","document":"wk-form4_1787177212.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2029214/000202921426000011/wk-form4_1787177212.xml","form_type":"4"}},{"id":681745,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21728,"kind":"person","name":"Parks Louis A.","position":1,"cik":"0002029214","reported_name":"Parks Louis A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Series A Preferred Stock","published_at":"2026-08-19T22:06:55.000Z","date":"2026-08-18","kind":"exercise","planned":false,"acquired":true,"shares":485,"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":970,"source":{"system":"sec-edgar","filing":"0002029214-26-000011","document":"wk-form4_1787177212.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2029214/000202921426000011/wk-form4_1787177212.xml","form_type":"4"}},{"id":755300,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21728,"kind":"person","name":"Parks Louis A.","position":1,"cik":"0002029214","reported_name":"Parks Louis A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-02T23:00:56.000Z","date":"2026-05-29","kind":"purchase","planned":false,"acquired":true,"shares":1000,"price":11.6,"value":11600.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 12,516 Restricted Stock Units credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated. Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock payable upon the first anniversary of the respective dates of grant of each award of Restricted Stock Units."}],"balance_after":15813,"source":{"system":"sec-edgar","filing":"0002029214-26-000009","document":"wk-form4_1780441253.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2029214/000202921426000009/wk-form4_1780441253.xml","form_type":"4"}},{"id":760447,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21728,"kind":"person","name":"Parks Louis A.","position":1,"cik":"0002029214","reported_name":"Parks Louis A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-28T22:29:45.000Z","date":"2026-05-27","kind":"grant","planned":false,"acquired":true,"shares":5504,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes 5,504 Restricted Stock Units credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated. Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock payable upon the first anniversary of the grant date. The number of Restricted Stock Units granted was determined using the closing price on May 27, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 12,516 Restricted Stock Units credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated. Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock payable upon the first anniversary of the respective dates of grant of each award of Restricted Stock Units."}],"balance_after":14813,"source":{"system":"sec-edgar","filing":"0002029214-26-000007","document":"wk-form4_1780007382.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2029214/000202921426000007/wk-form4_1780007382.xml","form_type":"4"}},{"id":768293,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21728,"kind":"person","name":"Parks Louis A.","position":1,"cik":"0002029214","reported_name":"Parks Louis A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Unit","published_at":"2026-05-21T20:48:45.000Z","date":"2026-05-19","kind":"exercise","planned":false,"acquired":false,"shares":485,"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 May 19, 2025, the Reporting Person was granted Restricted Stock Units by Star Operating Companies, Inc. (\"SOC\"), each of which represented the right to receive, at settlement, one share of SOC Series A Preferred Stock (\"SOC RSUs\"). Pursuant to the Agreement and Plan of Merger, dated as of May 21, 2025, by and among SOC, the Issuer and HSON Merger Sub, Inc., a wholly owned subsidiary of the Issuer, the Reporting Person's SOC RSUs were exchanged for 485 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on May 19, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","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 485 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":485},"source":{"system":"sec-edgar","filing":"0002029214-26-000005","document":"wk-form4_1779396522.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2029214/000202921426000005/wk-form4_1779396522.xml","form_type":"4"}},{"id":768292,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21728,"kind":"person","name":"Parks Louis A.","position":1,"cik":"0002029214","reported_name":"Parks Louis A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Series A Preferred Stock","published_at":"2026-05-21T20:48:45.000Z","date":"2026-05-19","kind":"exercise","planned":false,"acquired":true,"shares":485,"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":485,"source":{"system":"sec-edgar","filing":"0002029214-26-000005","document":"wk-form4_1779396522.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2029214/000202921426000005/wk-form4_1779396522.xml","form_type":"4"}},{"id":826602,"issuer":{"id":7343,"kind":"organization","name":"Star Equity Holdings, Inc.","symbol":"STRR"},"owners":[{"id":21728,"kind":"person","name":"Parks Louis A.","position":1,"cik":"0002029214","reported_name":"Parks Louis A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Unit","published_at":"2026-03-27T22:34:17.000Z","date":"2026-03-25","kind":"exercise","planned":false,"acquired":false,"shares":417,"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 417 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 417 Restricted Stock Units. 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(\"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 380 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on November 22, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On November 22, 2024, 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 380 Restricted Stock Units. 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Each Restricted Stock Unit represents the right to receive, at settlement, one share of Common Stock payable upon the first anniversary of the Grant Date. The number of Restricted Stock Units granted was determined using the closing price on September 9, 2025."},{"field":"shares","element":"transactionShares","label":"F1","text":"Includes 7,012 Restricted Stock Units credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated. Each Restricted Stock Unit represents the right to receive, at settlement, one share of Common Stock payable upon the first anniversary of the Grant Date. The number of Restricted Stock Units granted was determined using the closing price on September 9, 2025."}],"balance_after":7012,"source":{"system":"sec-edgar","filing":"0002029214-25-000006","document":"wk-form4_1757639461.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2029214/000202921425000006/wk-form4_1757639461.xml","form_type":"4"}},{"id":1058852,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21728,"kind":"person","name":"Parks Louis A.","position":1,"cik":"0002029214","reported_name":"Parks Louis A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Unit","published_at":"2025-08-22T16:19:49.000Z","date":"2025-08-22","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":485,"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 Hudson 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 Hudson 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":485},"source":{"system":"sec-edgar","filing":"0000707388-25-000142","document":"wk-form4_1755893984.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/707388/000070738825000142/wk-form4_1755893984.xml","form_type":"4"}},{"id":1058851,"issuer":{"id":76212,"kind":"organization","name":"STAR EQUITY HOLDINGS, INC.","symbol":"STRR"},"owners":[{"id":21728,"kind":"person","name":"Parks Louis A.","position":1,"cik":"0002029214","reported_name":"Parks Louis A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Unit","published_at":"2025-08-22T16:19:49.000Z","date":"2025-08-22","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":485,"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. 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