{"transactions":[{"id":753261,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42036,"kind":"person","name":"Boschee Ryan J.","position":1,"cik":"0002129338","reported_name":"Boschee Ryan J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Credit Officer"}}],"security":"Common Stock","published_at":"2026-06-03T17:49:42.000Z","date":"2026-06-01","kind":"grant","planned":false,"acquired":true,"shares":2247,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares issuable upon vesting of restricted stock units granted to the reporting person pursuant to the Registrant's 2023 Equity and Incentive Plan. The restricted stock units vests on June 1, 2029, subject to the reporting person's continued employment through the vesting date."}],"balance_after":16777,"source":{"system":"sec-edgar","filing":"0002129338-26-000007","document":"wk-form4_1780508980.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000212933826000007/wk-form4_1780508980.xml","form_type":"4"}}]}