{"transactions":[{"id":753260,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42035,"kind":"person","name":"Kanning Jolyn M.","position":1,"cik":"0002129553","reported_name":"Kanning Jolyn M.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Common Stock","published_at":"2026-06-03T17:49:30.000Z","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":13885,"source":{"system":"sec-edgar","filing":"0002129553-26-000006","document":"wk-form4_1780508967.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000212955326000006/wk-form4_1780508967.xml","form_type":"4"}}]}