{"transactions":[{"id":703696,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":28863,"kind":"person","name":"Ritter Matthew John","position":1,"cik":"0002146309","reported_name":"Ritter Matthew John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-07-24T22:31:13.000Z","date":"2026-07-22","kind":"grant","planned":false,"acquired":true,"shares":1806,"price":38.97,"value":70379.82,"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 vest on June 1, 2027, subject to the reporting person's provision of continuous service to the Registrant through the vesting date."}],"balance_after":1806,"source":{"system":"sec-edgar","filing":"0002146309-26-000004","document":"wk-form4_1784932270.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000214630926000004/wk-form4_1784932270.xml","form_type":"4"}}]}