{"transactions":[{"id":797904,"issuer":{"id":5866,"kind":"organization","name":"CoastalSouth Bancshares, Inc.","symbol":"COSO"},"owners":[{"id":50857,"kind":"person","name":"Stone Stephen R.","position":1,"cik":"0002064783","reported_name":"Stone Stephen R.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND CEO"}}],"security":"Restricted Stock Units","published_at":"2026-04-29T20:15:06.000Z","date":"2026-04-27","kind":"exercise","planned":false,"acquired":false,"shares":17000,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units (\"RSU\") convert into shares of the issuer's common stock on a one-for-one basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units (\"RSU\") convert into shares of the issuer's common stock on a one-for-one basis."}],"balance_after":0,"derivative":{"exercise_date":"2026-04-27","expiration_date":"2026-04-27","underlying":"Common Stock","underlying_shares":17000},"source":{"system":"sec-edgar","filing":"0001193125-26-191618","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1297107/000119312526191618/ownership.xml","form_type":"4"}},{"id":797903,"issuer":{"id":5866,"kind":"organization","name":"CoastalSouth Bancshares, Inc.","symbol":"COSO"},"owners":[{"id":50857,"kind":"person","name":"Stone Stephen R.","position":1,"cik":"0002064783","reported_name":"Stone Stephen R.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND CEO"}}],"security":"Common Stock","published_at":"2026-04-29T20:15:06.000Z","date":"2026-04-27","kind":"tax_withholding","planned":false,"acquired":false,"shares":5022,"price":25.59,"value":128512.98,"ownership":{"direct":true},"balance_after":132363,"source":{"system":"sec-edgar","filing":"0001193125-26-191618","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1297107/000119312526191618/ownership.xml","form_type":"4"}},{"id":797902,"issuer":{"id":5866,"kind":"organization","name":"CoastalSouth Bancshares, Inc.","symbol":"COSO"},"owners":[{"id":50857,"kind":"person","name":"Stone Stephen R.","position":1,"cik":"0002064783","reported_name":"Stone Stephen R.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND CEO"}}],"security":"Common Stock","published_at":"2026-04-29T20:15:06.000Z","date":"2026-04-27","kind":"exercise","planned":false,"acquired":true,"shares":17000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":137385,"source":{"system":"sec-edgar","filing":"0001193125-26-191618","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1297107/000119312526191618/ownership.xml","form_type":"4"}},{"id":853333,"issuer":{"id":5866,"kind":"organization","name":"CoastalSouth Bancshares, Inc.","symbol":"COSO"},"owners":[{"id":50857,"kind":"person","name":"Stone Stephen R.","position":1,"cik":"0002064783","reported_name":"Stone Stephen R.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND CEO"}}],"security":"Common Stock","published_at":"2026-03-09T20:34:39.000Z","date":"2026-03-09","kind":"purchase","planned":false,"acquired":true,"shares":200,"price":24.15,"value":4830.0,"ownership":{"direct":true},"balance_after":120385,"source":{"system":"sec-edgar","filing":"0002064783-26-000002","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1297107/000206478326000002/ownership.xml","form_type":"4"}},{"id":904940,"issuer":{"id":5866,"kind":"organization","name":"CoastalSouth Bancshares, Inc.","symbol":"COSO"},"owners":[{"id":50857,"kind":"person","name":"Stone Stephen R.","position":1,"cik":"0002064783","reported_name":"Stone Stephen R.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND CEO"}}],"security":"Restricted Stock Units","published_at":"2026-02-13T21:00:09.000Z","date":"2026-02-11","kind":"grant","planned":false,"acquired":true,"shares":12000,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units (\"RSU\") convert into shares of the issuer's common stock on a one-for-one basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units (\"RSU\") convert into shares of the issuer's common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs vest 33% on 2/11/2027, 33% of 2/11/2028, and 34% on 2/11/2029."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs vest 33% on 2/11/2027, 33% of 2/11/2028, and 34% on 2/11/2029."}],"balance_after":12000,"derivative":{"exercise_date":"2029-02-11","expiration_date":"2029-02-11","underlying":"Common Stock","underlying_shares":12000},"source":{"system":"sec-edgar","filing":"0001193125-26-051254","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1297107/000119312526051254/ownership.xml","form_type":"4"}},{"id":1091209,"issuer":{"id":5866,"kind":"organization","name":"CoastalSouth Bancshares, Inc.","symbol":"COSO"},"owners":[{"id":50857,"kind":"person","name":"Stone Stephen R.","position":1,"cik":"0002064783","reported_name":"Stone Stephen R.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND CEO"}}],"security":"Common Stock","published_at":"2025-07-07T21:11:29.000Z","date":"2025-07-02","kind":"purchase","planned":false,"acquired":true,"shares":2200,"price":21.5,"value":47300.0,"ownership":{"direct":true},"balance_after":120185,"source":{"system":"sec-edgar","filing":"0000950170-25-094297","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1297107/000095017025094297/ownership.xml","form_type":"4"}}]}