{"transactions":[{"id":891700,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":65527,"kind":"person","name":"Seda Ivan A","position":1,"cik":"0002099171","reported_name":"Seda Ivan A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Financial Officer"}}],"security":"Restricted Stock Unit","published_at":"2026-02-21T00:45:11.000Z","date":"2026-02-18","kind":"grant","planned":false,"acquired":true,"shares":12804,"price":31.24,"value":399996.96,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units granted 02/18/2026. The grant will vest 33.33% per year over three years."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Restricted stock units granted 02/18/2026. The grant will vest 33.33% per year over three years."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Restricted stock units granted 02/18/2026. The grant will vest 33.33% per year over three years."}],"balance_after":12804,"derivative":{"underlying":"Common Stock","underlying_shares":12804},"source":{"system":"sec-edgar","filing":"0002099171-26-000002","document":"wk-form4_1771634709.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000209917126000002/wk-form4_1771634709.xml","form_type":"4"}}]}