US StockDetailed Quotes

Provided by Tiger Trade Technology Pte. Ltd.

First Interstate BancSystem

37.66

+0.32000.86%

Post-market: 37.660.00000.00%18:57 EST

Volume:674.80K

Turnover:25.40M

Market Cap:3.81B

PE:12.81

High:38.08

Open:37.27

Low:36.94

Close:37.34

52wk High:39.26

52wk Low:22.95

Shares:101.11M

Float Shares:84.50M

Volume Ratio:0.69

T/O Rate:0.80%

Dividend:1.88

Dividend Rate:4.99%

EPS(TTM):2.94

EPS(LYR):2.95

ROE:8.95%

ROA:1.08%

PB:1.10

PE(LYR):12.79

Loading ...

Overview Company News Filings

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Major Issues Report

Form 8-K - Current report

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Major Issues Report

Form 8-K - Current report

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Quarterly Report

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Major Issues Report

Form 8-K - Current report

Major Issues Report

Form 8-K - Current report

Major Issues Report

Form 8-K - Current report

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Major Issues Report

Form 8-K - Current report

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Major Issues Report

Form 8-K - Current report

Major Issues Report

Form 8-K/A - Current report: [Amend]

Major Issues Report

Form 8-K - Current report

{"basename":"","ssrTDKData":{"titleTemplate":"%s - Tiger Brokers","title":"Tiger Brokers | Global Stocks, Options & Futures Trading App","description":"Tiger Brokers, one-stop investment in US stocks, SGX stocks, HK stocks, A-shares & other global assets. One of the best stock trading platforms in Singapore.","keywords":"tiger brokers,tiger trade,tiger brokers singapore,broker online,stock trading in singapore,share trading singapore,brokerage firm singapore,trading app,stock broker singapore,stock trading platforms,trading account","social":{"ogDescription":"Tiger Brokers, one-stop investment in US stocks, SGX stocks, HK stocks, A-shares & other global assets. One of the best stock trading platforms in Singapore.","ogImage":"https://c1.itigergrowtha.com/portal5/static/media/og-logo.be62fbe1.png","ogUrl":"https://www.itiger.com/stock/FIBK/filings"},"companyName":"Tiger Brokers"},"pageData":{"isMobile":false,"isTiger":false,"isTTM":true,"region":"SGP","license":"TBSG","edition":"fundamental","symbol":"FIBK","isAnalysisPage":false},"__swrFallback__":{"@#url:\"https://hq.skytigris.cn/stock_info/detail/global\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"FIBK\",,,,,undefined,":{"symbol":"FIBK","market":"US","secType":"STK","nameCN":"First Interstate BancSystem","latestPrice":37.66,"timestamp":1771016400000,"preClose":37.34,"halted":0,"volume":674802,"hourTrading":{"tag":"盘后","latestPrice":37.66,"preClose":37.66,"latestTime":"18:57 EST","volume":18426,"amount":693923.16,"timestamp":1771027029389,"change":0,"changeRate":0,"amplitude":0},"delay":0,"changeRate":0.008569898232458305,"floatShares":84501539,"shares":101106000,"eps":2.94,"marketStatus":"Market Closed","change":0.32,"latestTime":"02-13 16:00:00 EST","open":37.27,"high":38.08,"low":36.94,"amount":25401678.304716,"amplitude":0.03053,"askPrice":0,"askSize":0,"bidPrice":0,"bidSize":0,"shortable":3,"etf":0,"ttmEps":2.94,"tradingStatus":0,"nextMarketStatus":{"tag":"Pre-Mkt","tradingStatus":1,"beginTime":1771318800000},"marketStatusCode":7,"adr":0,"adrRate":0,"listingDate":1269403200000,"exchange":"NASDAQ","adjPreClose":37.34,"dividendRate":0.049873,"preHourTrading":{"tag":"盘前","latestPrice":37.2,"preClose":37.34,"latestTime":"09:29 EST","volume":42,"amount":1563.100014,"timestamp":1770992999910,"change":-0.14,"changeRate":-0.003749,"amplitude":0.011248},"postHourTrading":{"tag":"盘后","latestPrice":37.66,"preClose":37.66,"latestTime":"18:57 EST","volume":18426,"amount":693923.16,"timestamp":1771027029389,"change":0,"changeRate":0,"amplitude":0},"volumeRatio":0.6859172896931967,"impliedVol":0.4355,"impliedVolPercentile":0.5857},"@#url:\"https://hq.skytigris.cn/stock_info/fundamental/all\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"FIBK\",,,,,undefined,":{"symbol":"FIBK","floatShares":84501539,"roa":"1.08%","roe":"8.95%","lyrEps":2.945305,"volumeRatio":0.6859172896931967,"shares":101106000,"dividePrice":1.8782,"high":38.08,"amplitude":0.03053,"preClose":37.34,"low":36.94,"week52Low":22.95,"pbRate":"1.10","psRate":"3.69","week52High":39.255,"institutionHeld":0,"latestPrice":37.66,"eps":2.94,"divideRate":0.049873,"volume":674802,"delay":0,"ttmEps":2.94,"open":37.27,"prevYearClose":34.6,"prevWeekClose":38.82,"prevMonthClose":35.47,"prevQuarterClose":34.6,"fiveDayClose":38.82,"twentyDayClose":37.27,"sixtyDayClose":29.68,"dividendPayoutRate":0.6383040126574328,"dividendFrequency":"Q","dividendGrowthYears":4,"dividendGrowthRate":0,"fiveYearAvgDividendRate":0.05136604012703498},"@#url:\"https://hq.skytigris.cn/fundamental/corporate_actions/details/FIBK\",params:#limit:5,,,undefined,":[{"date":"2026-02-10","symbol":"FIBK","amount":0.47,"announcedDate":"2026-01-28","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2026-02-10","defaultRemindTime":1770733800000,"name":"First Interstate BancSystem","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2026-02-20","payableDate":"2026-02-10","currency":"USD","dateTimestamp":1770699600000,"payDate":"2026-02-20"},{"market":"US","date":"2026-01-28","symbol":"FIBK","fiscalQuarterEnding":"2025/12","expectedEps":0.64,"name":null,"time":"Post Market","type":"earning","dateTimestamp":1769576400000,"reportTimeType":"post","actualEps":0.5},{"date":"2025-11-10","symbol":"FIBK","amount":0.47,"announcedDate":"2025-10-28","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2025-11-10","defaultRemindTime":1762785000000,"name":"First Interstate BancSystem","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2025-11-20","payableDate":"2025-11-10","currency":"USD","dateTimestamp":1762750800000,"payDate":"2025-11-20"},{"market":"US","date":"2025-10-29","symbol":"FIBK","fiscalQuarterEnding":"2025/09","expectedEps":0.59,"name":null,"time":"Post Market","type":"earning","dateTimestamp":1761710400000,"reportTimeType":"post","actualEps":0.69},{"date":"2025-08-11","symbol":"FIBK","amount":0.47,"announcedDate":"2025-07-29","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2025-08-11","defaultRemindTime":1754919000000,"name":"First Interstate BancSystem","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2025-08-21","payableDate":"2025-08-11","currency":"USD","dateTimestamp":1754884800000,"payDate":"2025-08-21"}],"@#url:\"https://hq.skytigris.cn/fundamental/dividend/history\",params:#symbol:\"FIBK\",market:\"US\",,,undefined,":[{"executeDate":"2016-04-28","recordDate":"2016-05-02","paymentDate":"2016-05-13","value":0.22,"currency":"USD"},{"executeDate":"2016-07-28","recordDate":"2016-08-01","paymentDate":"2016-08-12","value":0.22,"currency":"USD"},{"executeDate":"2016-10-27","recordDate":"2016-10-31","paymentDate":"2016-11-14","value":0.22,"currency":"USD"},{"executeDate":"2017-01-26","recordDate":"2017-01-30","paymentDate":"2017-02-10","value":0.24,"currency":"USD"},{"executeDate":"2017-04-28","recordDate":"2017-05-02","paymentDate":"2017-05-12","value":0.24,"currency":"USD"}],"@#url:\"https://hq.skytigris.cn/fundamental/estimate/recommendation\",params:#symbol:\"FIBK\",market:\"US\",delay:false,,,undefined,":{"strongBuy":0.1429,"buy":0.4286,"hold":0.2857,"sell":0.1429,"strongSell":0,"meanLabel":"BUY","meanPercent":0.4286,"analysts":7,"updateTime":1753765200000},"@#url:\"https://hq.skytigris.cn/value_analysis/stock/FIBK\",params:#withQuantilePoint:true,period:\"5year\",factor:\"peRate\",delay:false,algorithm:1,,,undefined,":{"brief":{"id":"FIBK","date":"2026-02-13","current":12.809524,"percent":0.31445,"low":7.787967,"twenty":11.043721,"median":13.831525,"eighty":17.889574,"high":41.062658,"avg":15.971601,"sd":7.489102,"marketCap":3775298040},"quantilePoints":[{"date":"2021-02-19","current":17.368352,"twenty":14.43087,"median":16.195752,"eighty":21.419799,"marketCap":2799778339},{"date":"2021-02-26","current":17.783376,"twenty":14.43276,"median":16.214807,"eighty":21.419799,"marketCap":2866680166},{"date":"2021-03-05","current":18.41789,"twenty":14.43276,"median":16.245387,"eighty":21.419799,"marketCap":2968963930},{"date":"2021-03-12","current":19.569249,"twenty":14.43276,"median":16.272759,"eighty":21.419799,"marketCap":3154562971},{"date":"2021-03-19","current":18.91463,"twenty":14.43276,"median":16.292857,"eighty":21.419799,"marketCap":3049038432},{"date":"2021-03-26","current":18.125237,"twenty":14.436547,"median":16.319993,"eighty":21.419799,"marketCap":2921788254},{"date":"2021-04-01","current":17.913449,"twenty":14.436547,"median":16.371263,"eighty":21.419799,"marketCap":2887647962},{"date":"2021-04-09","current":18.136789,"twenty":14.43276,"median":16.388083,"eighty":21.419799,"marketCap":2923650451},{"date":"2021-04-16","current":18.333175,"twenty":14.43276,"median":16.399133,"eighty":21.419799,"marketCap":2955307813},{"date":"2021-04-23","current":18.714394,"twenty":14.43276,"median":16.410989,"eighty":21.419799,"marketCap":3016760338},{"date":"2021-04-30","current":15.946313,"twenty":14.43276,"median":16.413951,"eighty":21.419799,"marketCap":2922959210},{"date":"2021-05-07","current":16.231493,"twenty":14.478778,"median":16.413951,"eighty":21.419799,"marketCap":2975232698},{"date":"2021-05-14","current":16.143223,"twenty":14.555719,"median":16.413951,"eighty":21.419799,"marketCap":2959052809},{"date":"2021-05-21","current":15.718848,"twenty":14.56927,"median":16.413951,"eighty":21.419799,"marketCap":2881264880},{"date":"2021-05-28","current":15.980263,"twenty":14.56927,"median":16.413951,"eighty":21.419799,"marketCap":2929182245},{"date":"2021-06-04","current":15.807118,"twenty":14.56927,"median":16.413951,"eighty":21.419799,"marketCap":2897444770},{"date":"2021-06-11","current":15.406508,"twenty":14.56927,"median":16.413951,"eighty":21.419799,"marketCap":2824012965},{"date":"2021-06-18","current":14.014558,"twenty":14.574294,"median":16.413951,"eighty":21.419799,"marketCap":2568868559},{"date":"2021-06-25","current":14.676583,"twenty":14.574294,"median":16.413951,"eighty":21.419799,"marketCap":2690217727},{"date":"2021-07-02","current":14.225048,"twenty":14.555719,"median":16.413951,"eighty":21.419799,"marketCap":2607451371},{"date":"2021-07-09","current":14.506833,"twenty":14.502602,"median":16.413951,"eighty":21.419799,"marketCap":2659102556},{"date":"2021-07-16","current":14.449118,"twenty":14.449118,"median":16.413951,"eighty":21.419799,"marketCap":2648523398},{"date":"2021-07-23","current":14.167333,"twenty":14.41826,"median":16.413951,"eighty":21.419799,"marketCap":2596872213},{"date":"2021-07-30","current":13.795325,"twenty":14.393794,"median":16.413951,"eighty":21.419799,"marketCap":2608695978},{"date":"2021-08-06","current":14.524915,"twenty":14.373679,"median":16.413951,"eighty":21.419799,"marketCap":2746661394},{"date":"2021-08-13","current":14.70265,"twenty":14.373679,"median":16.413951,"eighty":21.419799,"marketCap":2780271118},{"date":"2021-08-20","current":14.969253,"twenty":14.373679,"median":16.413951,"eighty":21.419799,"marketCap":2830685705},{"date":"2021-08-27","current":14.93963,"twenty":14.373679,"median":16.413951,"eighty":21.419799,"marketCap":2825084085},{"date":"2021-09-03","current":14.136531,"twenty":14.360411,"median":16.411653,"eighty":21.419799,"marketCap":2673217921},{"date":"2021-09-10","current":13.583577,"twenty":14.330779,"median":16.411653,"eighty":21.419799,"marketCap":2568654333},{"date":"2021-09-17","current":12.750854,"twenty":14.30471,"median":16.411653,"eighty":21.419799,"marketCap":2411186548},{"date":"2021-09-24","current":12.801929,"twenty":14.269862,"median":16.400074,"eighty":21.419799,"marketCap":2420844716},{"date":"2021-10-01","current":13.381142,"twenty":14.230087,"median":16.396214,"eighty":21.419799,"marketCap":2530373937},{"date":"2021-10-08","current":13.87479,"twenty":14.21925,"median":16.385412,"eighty":21.419799,"marketCap":2623722705},{"date":"2021-10-15","current":13.397597,"twenty":14.197726,"median":16.354791,"eighty":21.419799,"marketCap":2533485563},{"date":"2021-10-22","current":13.907699,"twenty":14.182333,"median":16.286198,"eighty":21.419799,"marketCap":2629945957},{"date":"2021-10-29","current":13.767991,"twenty":14.161919,"median":16.262933,"eighty":21.419799,"marketCap":2587005523},{"date":"2021-11-05","current":14.314156,"twenty":14.143138,"median":16.241825,"eighty":21.419799,"marketCap":2689630000},{"date":"2021-11-12","current":14.310845,"twenty":14.143138,"median":16.216592,"eighty":21.419799,"marketCap":2689007689},{"date":"2021-11-19","current":14.380395,"twenty":14.143138,"median":16.201542,"eighty":21.419799,"marketCap":2702076229},{"date":"2021-11-26","current":13.443119,"twenty":14.138676,"median":16.189331,"eighty":21.419799,"marketCap":2525962094},{"date":"2021-12-03","current":13.270899,"twenty":14.12055,"median":16.178995,"eighty":21.419799,"marketCap":2493601900},{"date":"2021-12-10","current":13.231156,"twenty":14.097579,"median":16.158164,"eighty":21.419165,"marketCap":2486134162},{"date":"2021-12-17","current":12.834095,"twenty":14.08029,"median":16.146207,"eighty":21.324086,"marketCap":2411526450},{"date":"2021-12-23","current":12.946646,"twenty":14.03659,"median":16.133208,"eighty":21.261189,"marketCap":2432674735},{"date":"2021-12-31","current":13.463055,"twenty":13.984338,"median":16.125598,"eighty":21.225793,"marketCap":2529708040},{"date":"2022-01-07","current":14.737527,"twenty":13.971811,"median":16.092298,"eighty":21.15896,"marketCap":2769181263},{"date":"2022-01-14","current":14.658079,"twenty":13.971811,"median":16.062546,"eighty":21.106718,"marketCap":2754253062},{"date":"2022-01-21","current":12.797682,"twenty":13.966313,"median":16.033398,"eighty":21.058854,"marketCap":2404684358},{"date":"2022-01-28","current":12.077518,"twenty":13.937601,"median":15.980965,"eighty":21.036057,"marketCap":2320091220},{"date":"2022-02-04","current":11.88648,"twenty":13.913669,"median":15.955917,"eighty":21.004593,"marketCap":2283392726},{"date":"2022-02-11","current":12.190846,"twenty":13.887963,"median":15.938502,"eighty":20.947399,"marketCap":2341861513},{"date":"2022-02-18","current":12.49845,"twenty":13.831116,"median":15.909427,"eighty":20.840149,"marketCap":2400952308},{"date":"2022-02-25","current":12.885295,"twenty":13.810209,"median":15.905797,"eighty":20.815092,"marketCap":2475265153},{"date":"2022-03-04","current":12.474028,"twenty":13.773949,"median":15.88834,"eighty":20.791465,"marketCap":2396260711},{"date":"2022-03-11","current":12.639182,"twenty":13.75297,"median":15.87107,"eighty":20.687589,"marketCap":2427986904},{"date":"2022-03-18","current":12.33478,"twenty":13.708671,"median":15.829814,"eighty":20.58355,"marketCap":2369511175},{"date":"2022-03-25","current":16.782964,"twenty":13.65922,"median":15.810785,"eighty":20.559491,"marketCap":3224007305},{"date":"2022-04-01","current":11.781026,"twenty":13.579291,"median":15.800472,"eighty":20.503527,"marketCap":2263135116},{"date":"2022-04-08","current":11.152791,"twenty":13.523854,"median":15.776148,"eighty":20.470143,"marketCap":2142451165},{"date":"2022-04-14","current":11.123646,"twenty":13.489499,"median":15.766998,"eighty":20.470143,"marketCap":2136852425},{"date":"2022-04-22","current":11.220796,"twenty":13.440129,"median":15.734268,"eighty":20.460692,"marketCap":2155514892},{"date":"2022-04-29","current":18.853787,"twenty":13.391717,"median":15.722549,"eighty":20.420056,"marketCap":2023011379},{"date":"2022-05-06","current":20.135056,"twenty":13.391717,"median":15.722549,"eighty":20.452288,"marketCap":2160491550},{"date":"2022-05-13","current":34.919586,"twenty":13.391717,"median":15.722549,"eighty":20.557751,"marketCap":3746871607},{"date":"2022-05-20","current":34.297116,"twenty":13.391717,"median":15.722549,"eighty":20.659156,"marketCap":3680080500},{"date":"2022-05-27","current":38.848295,"twenty":13.391717,"median":15.722549,"eighty":20.791465,"marketCap":4168422037},{"date":"2022-06-03","current":39.185041,"twenty":13.391717,"median":15.722549,"eighty":20.791465,"marketCap":4204554931},{"date":"2022-06-10","current":37.011496,"twenty":13.391717,"median":15.722549,"eighty":20.791465,"marketCap":3971333524},{"date":"2022-06-17","current":37.062518,"twenty":13.391717,"median":15.722549,"eighty":20.791465,"marketCap":3976808205},{"date":"2022-06-24","current":38.705433,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4153092930},{"date":"2022-07-01","current":39.511583,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4239592888},{"date":"2022-07-08","current":39.511583,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4239592888},{"date":"2022-07-15","current":38.756455,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4158567611},{"date":"2022-07-22","current":40.338143,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4328282719},{"date":"2022-07-29","current":34.091321,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4394371240},{"date":"2022-08-05","current":33.620541,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4333687724},{"date":"2022-08-12","current":34.308366,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4422348331},{"date":"2022-08-19","current":34.117764,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4397779729},{"date":"2022-08-26","current":33.322207,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4295232521},{"date":"2022-09-02","current":32.64267,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4207640115},{"date":"2022-09-09","current":33.620541,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4333687724},{"date":"2022-09-16","current":34.664709,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4468280934},{"date":"2022-09-23","current":34.382949,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4431962131},{"date":"2022-09-30","current":33.438226,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4310187322},{"date":"2022-10-07","current":34.399523,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4434098532},{"date":"2022-10-14","current":35.667441,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4597533144},{"date":"2022-10-21","current":34.954755,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4505667937},{"date":"2022-10-28","current":28.086406,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4704473040},{"date":"2022-11-04","current":28.666343,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4801612470},{"date":"2022-11-11","current":27.443246,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4596743761},{"date":"2022-11-18","current":27.536782,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4612410917},{"date":"2022-11-25","current":27.792445,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4655234479},{"date":"2022-12-02","current":26.869563,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4500651866},{"date":"2022-12-09","current":25.235814,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4226998864},{"date":"2022-12-16","current":23.502294,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":3936634227},{"date":"2022-12-23","current":23.901378,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4003480762},{"date":"2022-12-30","current":24.10092,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4036904030},{"date":"2023-01-06","current":24.506239,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4104795042},{"date":"2023-01-13","current":24.568596,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4115239813},{"date":"2023-01-20","current":23.639479,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":3959612724},{"date":"2023-01-27","current":17.366627,"twenty":13.389896,"median":15.722243,"eighty":20.753663,"marketCap":3511532043},{"date":"2023-02-03","current":19.417356,"twenty":13.389896,"median":15.722243,"eighty":20.611903,"marketCap":3926189456},{"date":"2023-02-10","current":18.952456,"twenty":13.389896,"median":15.722243,"eighty":20.479593,"marketCap":3832186516},{"date":"2023-02-17","current":19.17974,"twenty":13.389896,"median":15.722243,"eighty":20.389812,"marketCap":3878143509},{"date":"2023-02-24","current":18.558708,"twenty":13.389896,"median":15.722243,"eighty":20.366185,"marketCap":3752570771},{"date":"2023-03-03","current":18.145489,"twenty":13.389896,"median":15.722243,"eighty":20.318932,"marketCap":3669017845},{"date":"2023-03-10","current":16.394472,"twenty":13.389896,"median":15.722243,"eighty":20.177172,"marketCap":3314962323},{"date":"2023-03-17","current":15.36659,"twenty":13.389896,"median":15.718848,"eighty":20.111709,"marketCap":3107124420},{"date":"2023-03-24","current":15.531877,"twenty":13.389896,"median":15.674614,"eighty":20.044863,"marketCap":3140545590},{"date":"2023-03-31","current":15.423407,"twenty":13.391717,"median":15.6678,"eighty":19.973935,"marketCap":3118612948},{"date":"2023-04-06","current":14.968866,"twenty":13.388075,"median":15.647111,"eighty":19.913655,"marketCap":3026704729},{"date":"2023-04-14","current":15.255247,"twenty":13.383775,"median":15.618205,"eighty":19.842618,"marketCap":3084610880},{"date":"2023-04-21","current":14.919683,"twenty":13.383117,"median":15.605714,"eighty":19.789773,"marketCap":3016759879},{"date":"2023-04-28","current":13.613565,"twenty":13.382458,"median":15.577273,"eighty":19.774637,"marketCap":2752662907},{"date":"2023-05-05","current":8.257199,"twenty":13.338359,"median":15.56339,"eighty":19.775519,"marketCap":2410276318},{"date":"2023-05-12","current":7.803035,"twenty":13.270899,"median":15.54321,"eighty":19.768982,"marketCap":2277705902},{"date":"2023-05-19","current":8.420874,"twenty":13.22122,"median":15.519097,"eighty":19.665026,"marketCap":2458052986},{"date":"2023-05-26","current":8.349359,"twenty":13.146917,"median":15.495211,"eighty":19.38781,"marketCap":2437177802},{"date":"2023-06-02","current":8.134814,"twenty":13.118645,"median":15.478906,"eighty":19.264301,"marketCap":2374552248},{"date":"2023-06-09","current":9.00372,"twenty":12.962369,"median":15.456117,"eighty":19.154946,"marketCap":2628185741},{"date":"2023-06-16","current":9.207537,"twenty":12.890966,"median":15.419461,"eighty":19.120677,"marketCap":2687680017},{"date":"2023-06-23","current":8.503116,"twenty":12.831447,"median":15.392408,"eighty":18.996547,"marketCap":2482059448},{"date":"2023-06-30","current":8.731963,"twenty":12.805928,"median":15.376437,"eighty":18.90481,"marketCap":2548860039},{"date":"2023-07-07","current":8.310026,"twenty":12.755737,"median":15.366168,"eighty":18.882965,"marketCap":2425696450},{"date":"2023-07-13","current":8.710509,"twenty":12.722506,"median":15.349006,"eighty":18.8358,"marketCap":2542597484},{"date":"2023-07-20","current":9.529354,"twenty":12.670289,"median":15.336768,"eighty":18.716321,"marketCap":2781618347},{"date":"2023-07-28","current":10.18148,"twenty":12.629345,"median":15.311145,"eighty":18.706485,"marketCap":3001500180},{"date":"2023-08-04","current":10.388102,"twenty":12.606799,"median":15.282736,"eighty":18.706485,"marketCap":3062412360},{"date":"2023-08-11","current":10.234654,"twenty":12.556384,"median":15.259122,"eighty":18.706485,"marketCap":3017176017},{"date":"2023-08-18","current":9.507933,"twenty":12.527002,"median":15.244965,"eighty":18.706485,"marketCap":2802938667},{"date":"2023-08-25","current":9.08045,"twenty":12.476083,"median":15.219783,"eighty":18.668144,"marketCap":2676916696},{"date":"2023-09-01","current":9.230069,"twenty":12.443517,"median":15.186202,"eighty":18.560774,"marketCap":2721024386},{"date":"2023-09-08","current":8.816836,"twenty":12.41952,"median":15.157235,"eighty":18.502606,"marketCap":2599203147},{"date":"2023-09-15","current":9.119636,"twenty":12.399465,"median":15.093818,"eighty":18.347234,"marketCap":2688468710},{"date":"2023-09-22","current":8.727777,"twenty":12.33737,"median":15.065046,"eighty":18.138529,"marketCap":2572948570},{"date":"2023-09-29","current":8.756276,"twenty":12.308572,"median":15.038543,"eighty":18.112915,"marketCap":2581350035},{"date":"2023-10-06","current":8.774087,"twenty":12.267881,"median":15.010188,"eighty":18.030545,"marketCap":2586600950},{"date":"2023-10-13","current":8.603094,"twenty":12.206975,"median":14.969253,"eighty":17.91884,"marketCap":2536192162},{"date":"2023-10-20","current":8.346604,"twenty":12.175165,"median":14.93963,"eighty":17.871861,"marketCap":2460578979},{"date":"2023-10-27","current":8.798731,"twenty":12.128932,"median":14.918194,"eighty":17.838901,"marketCap":2479482275},{"date":"2023-11-03","current":9.196847,"twenty":12.077518,"median":14.909359,"eighty":17.838901,"marketCap":2591671480},{"date":"2023-11-10","current":8.688965,"twenty":12.012826,"median":14.876373,"eighty":17.838901,"marketCap":2448550235},{"date":"2023-11-17","current":9.523582,"twenty":11.961094,"median":14.824827,"eighty":17.838901,"marketCap":2683745454},{"date":"2023-11-24","current":9.475145,"twenty":11.941624,"median":14.800914,"eighty":17.838901,"marketCap":2670095732},{"date":"2023-12-01","current":9.646539,"twenty":11.899762,"median":14.770112,"eighty":17.838901,"marketCap":2718394750},{"date":"2023-12-08","current":10.481157,"twenty":11.859002,"median":14.745188,"eighty":17.826733,"marketCap":2953589970},{"date":"2023-12-15","current":11.975271,"twenty":11.787285,"median":14.72411,"eighty":17.838901,"marketCap":3374631413},{"date":"2023-12-22","current":11.539333,"twenty":11.759706,"median":14.72411,"eighty":17.838901,"marketCap":3251783910},{"date":"2023-12-29","current":11.714453,"twenty":11.744827,"median":14.725321,"eighty":17.85107,"marketCap":3301132907},{"date":"2024-01-05","current":11.278515,"twenty":11.719967,"median":14.72411,"eighty":17.855074,"marketCap":3178285403},{"date":"2024-01-12","current":11.0326,"twenty":11.652602,"median":14.681165,"eighty":17.855074,"marketCap":3108986812},{"date":"2024-01-19","current":10.645099,"twenty":11.605303,"median":14.648596,"eighty":17.859078,"marketCap":2999789031},{"date":"2024-01-26","current":10.611566,"twenty":11.544596,"median":14.637451,"eighty":17.855074,"marketCap":2990339223},{"date":"2024-02-02","current":10.668688,"twenty":11.52455,"median":14.622084,"eighty":17.855074,"marketCap":2747187060},{"date":"2024-02-09","current":10.260993,"twenty":11.457372,"median":14.599194,"eighty":17.855074,"marketCap":2642205640},{"date":"2024-02-16","current":10.809968,"twenty":11.424314,"median":14.561831,"eighty":17.855074,"marketCap":2783566760},{"date":"2024-02-23","current":10.761529,"twenty":11.386337,"median":14.532849,"eighty":17.855074,"marketCap":2771093720},{"date":"2024-03-01","current":10.624285,"twenty":11.297144,"median":14.501875,"eighty":17.85107,"marketCap":2735753440},{"date":"2024-03-08","current":10.760892,"twenty":11.271063,"median":14.45946,"eighty":17.85107,"marketCap":2770929601},{"date":"2024-03-15","current":10.098931,"twenty":11.220796,"median":14.43276,"eighty":17.85107,"marketCap":2600474816},{"date":"2024-03-22","current":10.716492,"twenty":11.185174,"median":14.414545,"eighty":17.85107,"marketCap":2759496658},{"date":"2024-03-28","current":11.152417,"twenty":11.156029,"median":14.401588,"eighty":17.85107,"marketCap":2871747369},{"date":"2024-04-05","current":10.40973,"twenty":11.111394,"median":14.384327,"eighty":17.855074,"marketCap":2680505416},{"date":"2024-04-12","current":10.127186,"twenty":11.059446,"median":14.372356,"eighty":17.855074,"marketCap":2607750325},{"date":"2024-04-19","current":9.969768,"twenty":10.955022,"median":14.343798,"eighty":17.855074,"marketCap":2567215346},{"date":"2024-04-26","current":10.855992,"twenty":10.864932,"median":14.314238,"eighty":17.85107,"marketCap":2818215400},{"date":"2024-05-03","current":11.234642,"twenty":10.859527,"median":14.286158,"eighty":17.85107,"marketCap":2916513080},{"date":"2024-05-10","current":11.169766,"twenty":10.859527,"median":14.239936,"eighty":17.85107,"marketCap":2899671166},{"date":"2024-05-17","current":11.137541,"twenty":10.859527,"median":14.225048,"eighty":17.85107,"marketCap":2891305725},{"date":"2024-05-24","current":10.920027,"twenty":10.859527,"median":14.218258,"eighty":17.85107,"marketCap":2834838995},{"date":"2024-05-31","current":10.678344,"twenty":10.846302,"median":14.209997,"eighty":17.85107,"marketCap":2772098183},{"date":"2024-06-07","current":10.553475,"twenty":10.78686,"median":14.209997,"eighty":17.85107,"marketCap":2739682097},{"date":"2024-06-14","current":10.468886,"twenty":10.759771,"median":14.20743,"eighty":17.855074,"marketCap":2717722813},{"date":"2024-06-21","current":10.456802,"twenty":10.716252,"median":14.195355,"eighty":17.859078,"marketCap":2714585773},{"date":"2024-06-28","current":10.762933,"twenty":10.708419,"median":14.182624,"eighty":17.871091,"marketCap":2794057467},{"date":"2024-07-05","current":11.16171,"twenty":10.708419,"median":14.155597,"eighty":17.871091,"marketCap":2897579806},{"date":"2024-07-12","current":11.782028,"twenty":10.708419,"median":14.134522,"eighty":17.871091,"marketCap":3058614555},{"date":"2024-07-15","current":11.749804,"twenty":10.708419,"median":14.120802,"eighty":17.871091,"marketCap":3050249114},{"date":"2024-08-02","current":12.298129,"twenty":10.703505,"median":14.079319,"eighty":17.884954,"marketCap":3106507310},{"date":"2024-08-09","current":11.770979,"twenty":10.703505,"median":14.014558,"eighty":17.884954,"marketCap":2973349357},{"date":"2024-08-16","current":11.957229,"twenty":10.703505,"median":13.950151,"eighty":17.884954,"marketCap":3020396024},{"date":"2024-08-23","current":12.068979,"twenty":10.703505,"median":13.922959,"eighty":17.884954,"marketCap":3048624024},{"date":"2024-08-30","current":12.702228,"twenty":10.703505,"median":13.907699,"eighty":17.884954,"marketCap":3208582692},{"date":"2024-09-06","current":12.375256,"twenty":10.703505,"median":13.87479,"eighty":17.884954,"marketCap":3125989655},{"date":"2024-09-13","current":12.060701,"twenty":10.703505,"median":13.820557,"eighty":17.884954,"marketCap":3046533061},{"date":"2024-09-20","current":13.24856,"twenty":10.703505,"median":13.795325,"eighty":17.884954,"marketCap":3346586249},{"date":"2024-09-27","current":12.5077,"twenty":10.703505,"median":13.756248,"eighty":17.884954,"marketCap":3159445062},{"date":"2024-10-04","current":12.222117,"twenty":10.703505,"median":13.711653,"eighty":17.884954,"marketCap":3087306839},{"date":"2024-10-11","current":12.284201,"twenty":10.703505,"median":13.663743,"eighty":17.884954,"marketCap":3102989062},{"date":"2024-10-18","current":13.592087,"twenty":10.703505,"median":13.602073,"eighty":17.884954,"marketCap":3433361213},{"date":"2024-10-25","current":14.214126,"twenty":10.703505,"median":13.557699,"eighty":17.884954,"marketCap":3346005300},{"date":"2024-10-31","current":14.036505,"twenty":10.703505,"median":13.557699,"eighty":17.884954,"marketCap":3304193300},{"date":"2024-11-08","current":14.480539,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3408718832},{"date":"2024-11-15","current":14.778054,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3478753840},{"date":"2024-11-22","current":15.022282,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3536245265},{"date":"2024-11-29","current":15.528502,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3655409309},{"date":"2024-12-06","current":15.222106,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3583283703},{"date":"2024-12-13","current":15.128855,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3561332432},{"date":"2024-12-20","current":13.996522,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3294781281},{"date":"2024-12-27","current":14.644838,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3447394881},{"date":"2025-01-03","current":14.191905,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3340774421},{"date":"2025-01-10","current":14.138619,"twenty":10.70292,"median":13.525917,"eighty":17.886494,"marketCap":3328230837},{"date":"2025-01-17","current":14.445015,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3400356443},{"date":"2025-01-24","current":14.484979,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3409764131},{"date":"2025-01-31","current":15.502792,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3503631000},{"date":"2025-02-07","current":15.377844,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3475392780},{"date":"2025-02-14","current":15.109438,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3414732900},{"date":"2025-02-21","current":14.887308,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3364531620},{"date":"2025-02-28","current":14.137621,"twenty":10.70292,"median":13.525917,"eighty":17.886494,"marketCap":3195102300},{"date":"2025-03-07","current":13.367057,"twenty":10.702216,"median":13.554661,"eighty":17.888034,"marketCap":3020954916},{"date":"2025-03-14","current":12.99241,"twenty":10.716372,"median":13.554661,"eighty":17.888034,"marketCap":2936284554},{"date":"2025-03-21","current":13.242175,"twenty":10.751564,"median":13.554661,"eighty":17.888034,"marketCap":2992731462},{"date":"2025-03-28","current":13.459563,"twenty":10.77555,"median":13.559528,"eighty":17.888034,"marketCap":3041861179},{"date":"2025-04-04","current":11.859216,"twenty":10.829371,"median":13.559528,"eighty":17.888034,"marketCap":2680182839},{"date":"2025-04-11","current":11.341185,"twenty":10.855992,"median":13.55691,"eighty":17.886494,"marketCap":2563107770},{"date":"2025-04-17","current":12.025726,"twenty":10.898127,"median":13.55691,"eighty":17.886494,"marketCap":2717814112},{"date":"2025-04-25","current":12.92998,"twenty":10.948247,"median":13.559528,"eighty":17.888034,"marketCap":2922175440},{"date":"2025-05-02","current":12.836784,"twenty":10.948247,"median":13.559528,"eighty":17.888034,"marketCap":2795851500},{"date":"2025-05-09","current":13.1133,"twenty":10.948247,"median":13.559528,"eighty":17.888034,"marketCap":2856076740},{"date":"2025-05-16","current":13.334825,"twenty":10.977351,"median":13.584411,"eighty":17.888034,"marketCap":2904324823},{"date":"2025-05-23","current":12.747303,"twenty":11.007755,"median":13.584411,"eighty":17.888034,"marketCap":2776362516},{"date":"2025-05-30","current":13.103668,"twenty":11.007755,"median":13.584411,"eighty":17.888034,"marketCap":2853978997},{"date":"2025-06-06","current":13.098853,"twenty":11.007755,"median":13.584411,"eighty":17.888034,"marketCap":2852930126},{"date":"2025-06-13","current":13.219247,"twenty":11.007755,"median":13.584411,"eighty":17.888034,"marketCap":2879151910},{"date":"2025-06-20","current":12.622093,"twenty":11.001539,"median":13.585244,"eighty":17.889574,"marketCap":2749091860},{"date":"2025-06-27","current":13.970504,"twenty":11.001539,"median":13.592087,"eighty":17.889574,"marketCap":3042775844},{"date":"2025-07-03","current":14.986629,"twenty":11.001539,"median":13.633402,"eighty":17.889574,"marketCap":3264087703},{"date":"2025-07-11","current":15.111838,"twenty":11.03459,"median":13.680678,"eighty":17.889574,"marketCap":3291358359},{"date":"2025-07-18","current":14.818077,"twenty":11.043721,"median":13.72788,"eighty":17.889574,"marketCap":3227377205},{"date":"2025-07-25","current":14.220924,"twenty":11.043721,"median":13.756248,"eighty":17.889574,"marketCap":3097317155},{"date":"2025-08-01","current":13.156089,"twenty":11.043721,"median":13.767991,"eighty":17.889574,"marketCap":3019322460},{"date":"2025-08-08","current":13.160659,"twenty":11.043721,"median":13.767991,"eighty":17.889574,"marketCap":3020371200},{"date":"2025-08-15","current":13.985469,"twenty":11.043721,"median":13.774477,"eighty":17.889574,"marketCap":3209665178},{"date":"2025-08-22","current":13.720472,"twenty":11.043721,"median":13.805679,"eighty":17.889574,"marketCap":3148848262},{"date":"2025-08-29","current":14.643394,"twenty":11.043721,"median":13.820557,"eighty":17.889574,"marketCap":3360658901},{"date":"2025-09-05","current":14.997485,"twenty":11.041119,"median":13.854012,"eighty":17.891115,"marketCap":3441922884},{"date":"2025-09-12","current":14.839858,"twenty":11.043721,"median":13.899722,"eighty":17.889574,"marketCap":3405747304},{"date":"2025-09-19","current":15.461231,"twenty":11.043721,"median":13.922959,"eighty":17.889574,"marketCap":3548352487},{"date":"2025-09-26","current":14.935805,"twenty":11.043721,"median":13.952135,"eighty":17.889574,"marketCap":3427767222},{"date":"2025-10-03","current":14.478913,"twenty":11.043721,"median":13.976331,"eighty":17.889574,"marketCap":3322910470},{"date":"2025-10-10","current":14.323569,"twenty":11.043721,"median":14.036505,"eighty":17.889574,"marketCap":3287259175},{"date":"2025-10-17","current":13.391509,"twenty":11.043721,"median":14.049212,"eighty":17.889574,"marketCap":3073351401},{"date":"2025-10-24","current":14.273311,"twenty":11.043721,"median":14.079319,"eighty":17.889574,"marketCap":3275724932},{"date":"2025-10-31","current":13.336924,"twenty":11.043721,"median":14.080892,"eighty":17.889574,"marketCap":3272881160},{"date":"2025-11-07","current":13.46826,"twenty":11.043721,"median":14.079319,"eighty":17.889574,"marketCap":3305110930},{"date":"2025-11-14","current":13.173688,"twenty":11.043721,"median":14.036505,"eighty":17.889574,"marketCap":3232823091},{"date":"2025-11-21","current":12.829881,"twenty":11.043721,"median":13.976331,"eighty":17.889574,"marketCap":3148452788},{"date":"2025-11-28","current":13.769062,"twenty":11.043721,"median":13.952135,"eighty":17.889574,"marketCap":3378927763},{"date":"2025-12-05","current":14.117062,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3464326973},{"date":"2025-12-12","current":14.871761,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3649530078},{"date":"2025-12-19","current":14.922074,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3661876952},{"date":"2025-12-26","current":15.035279,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3689657418},{"date":"2026-01-02","current":14.50699,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3560015244},{"date":"2026-01-09","current":15.731279,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3860455837},{"date":"2026-01-16","current":15.62646,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3834733183},{"date":"2026-01-23","current":16.024773,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3932479267},{"date":"2026-01-30","current":12.095236,"twenty":11.043721,"median":13.917572,"eighty":17.889574,"marketCap":3653970840},{"date":"2026-02-06","current":12.717736,"twenty":11.043721,"median":13.87479,"eighty":17.889574,"marketCap":3842028000},{"date":"2026-02-13","current":12.496849,"twenty":11.043721,"median":13.831525,"eighty":17.889574,"marketCap":3775298040}],"updateTime":1771077711935},"$inf$@#url:\"https://stock-news.skytigris.cn/v3/notice/important/events/list\",params:#symbol:\"FIBK\",pageSize:20,pageCount:1,market:\"us\",,,undefined,":[{"items":[{"cdn_pdf":false,"hasAttachments":true,"id":"20725301","market":"us","labels":[],"media":"sec.gov","original_id":"AN195917326000865-FIBK","pdf_url":"","pub_time":1770786000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000195917326000865/0001959173-26-000865-index.htm","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195917326000865/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILE3RosHzJzhVvEuxmr","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2026-02-11 13:00","pubTimestamp":1770786000,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20696593","market":"us","labels":[],"media":"sec.gov","original_id":"AN195004726000877-FIBK","pdf_url":"","pub_time":1770152759000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/0001950047-26-000877-index.html","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195004726000877/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILEFsgn2pC8VJQ2Pz3Z","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2026-02-04 05:05","pubTimestamp":1770152759,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20671712","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041326000007-FIBK","pdf_url":"","pub_time":1769576400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/0000860413-26-000007-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/fibk-20251231x8kpr.htm","primary":true,"translateUrl":"","linkName":"fibk-20251231x8kpr.htm","type":"EX-99.1","id":"NTFILE985uf6RokiyUxFyp","market":"us","size":951140},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/fibk-20260128.htm","primary":false,"translateUrl":"","linkName":"fibk-20260128.htm","type":"8-K","id":"NTFILEFh1DpspfR4sZswSc","market":"us","size":32472},{"description":"EX-99.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip.htm","primary":false,"translateUrl":"","linkName":"dec2025ip.htm","type":"EX-99.2","id":"NTFILEDJfUf69H85SRAjPS","market":"us","size":39803},{"description":"GRAPHIC","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip001.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip001.jpg","type":"GRAPHIC","id":"NTFILEAWTq24JbSikY9NYe","market":"us","size":139127},{"description":"GRAPHIC","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip002.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip002.jpg","type":"GRAPHIC","id":"NTFILE29y5bNWR7T8EjtfY","market":"us","size":283965},{"description":"GRAPHIC","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip003.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip003.jpg","type":"GRAPHIC","id":"NTFILEAz2j4yb5MZnqbYJx","market":"us","size":116371},{"description":"GRAPHIC","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip004.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip004.jpg","type":"GRAPHIC","id":"NTFILE9VLnYYfDx2WBd11G","market":"us","size":94683},{"description":"GRAPHIC","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip005.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip005.jpg","type":"GRAPHIC","id":"NTFILEGtj16dUkGZLo82uc","market":"us","size":125235},{"description":"GRAPHIC","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip006.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip006.jpg","type":"GRAPHIC","id":"NTFILEEMm8sRcDbbTuzToe","market":"us","size":177137},{"description":"GRAPHIC","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip007.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip007.jpg","type":"GRAPHIC","id":"NTFILE3o7LKThwRsw9DuMx","market":"us","size":184105},{"description":"GRAPHIC","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip008.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip008.jpg","type":"GRAPHIC","id":"NTFILE2aiPQjvJ4a83dDqE","market":"us","size":79414},{"description":"GRAPHIC","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip009.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip009.jpg","type":"GRAPHIC","id":"NTFILEGVvkAHRJ8xCWZvxQ","market":"us","size":106905},{"description":"GRAPHIC","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip010.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip010.jpg","type":"GRAPHIC","id":"NTFILEDseztn9gnGce3CLR","market":"us","size":83461},{"description":"GRAPHIC","seq":17,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip011.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip011.jpg","type":"GRAPHIC","id":"NTFILEHC5aZCENNCFHpZRe","market":"us","size":106629},{"description":"GRAPHIC","seq":18,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip012.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip012.jpg","type":"GRAPHIC","id":"NTFILEGWq6xBB3bETbpaVQ","market":"us","size":141359},{"description":"GRAPHIC","seq":19,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip013.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip013.jpg","type":"GRAPHIC","id":"NTFILEJ5AK8N1ne9DeuAB9","market":"us","size":87176},{"description":"GRAPHIC","seq":20,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip014.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip014.jpg","type":"GRAPHIC","id":"NTFILE75CVhSABLfvCepAU","market":"us","size":93665},{"description":"GRAPHIC","seq":21,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip015.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip015.jpg","type":"GRAPHIC","id":"NTFILE4SATiAnXDkk5e7ed","market":"us","size":99469},{"description":"GRAPHIC","seq":22,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip016.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip016.jpg","type":"GRAPHIC","id":"NTFILEFdvWiavGscGqDnSo","market":"us","size":85022},{"description":"GRAPHIC","seq":23,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip017.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip017.jpg","type":"GRAPHIC","id":"NTFILE5jLn4CAw2gqgifVc","market":"us","size":99784},{"description":"GRAPHIC","seq":24,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip018.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip018.jpg","type":"GRAPHIC","id":"NTFILE56AdSmgy2q6TSTPM","market":"us","size":107218},{"description":"GRAPHIC","seq":25,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip019.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip019.jpg","type":"GRAPHIC","id":"NTFILEGJ9fTVsGMv9Ps8sX","market":"us","size":277597},{"description":"GRAPHIC","seq":26,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip020.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip020.jpg","type":"GRAPHIC","id":"NTFILEESrGuBTJaEcoiKC5","market":"us","size":112678},{"description":"GRAPHIC","seq":27,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/dec2025ip021.jpg","primary":false,"translateUrl":"","linkName":"dec2025ip021.jpg","type":"GRAPHIC","id":"NTFILEBjTNf2xEs8rYemPS","market":"us","size":106016},{"description":"FIBK LOGO","seq":28,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000007/fibslogo2linea04.jpg","primary":false,"translateUrl":"","linkName":"fibslogo2linea04.jpg","type":"GRAPHIC","id":"NTFILEDmKkE7cXdXW9yhZZ","market":"us","size":165531}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2026-01-28 13:00","pubTimestamp":1769576400,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20602494","market":"us","labels":[],"media":"sec.gov","original_id":"AN195824426000008-FIBK","pdf_url":"","pub_time":1767589200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000195824426000008/0001958244-26-000008-index.htm","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195824426000008/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILE4txe4u9fMWjrjnqv","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2026-01-05 13:00","pubTimestamp":1767589200,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20444674","market":"us","labels":[],"media":"sec.gov","original_id":"AN190884825000006-FIBK","pdf_url":"","pub_time":1763960400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000190884825000006/0001908848-25-000006-index.htm","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000190884825000006/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILEskaAicY8GXa9BYic","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2025-11-24 13:00","pubTimestamp":1763960400,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20424673","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041325000168-FIBK","pdf_url":"","pub_time":1763442000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000168/0000860413-25-000168-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-10.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000168/fibk-20251118xex101xtransi.htm","primary":true,"translateUrl":"","linkName":"fibk-20251118xex101xtransi.htm","type":"EX-10.1","id":"NTFILEHLcM4SCeHTdFpdCt","market":"us","size":84175},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000168/fibk-20251114.htm","primary":false,"translateUrl":"","linkName":"fibk-20251114.htm","type":"8-K","id":"NTFILE6mJMT6TG6DDC6mhi","market":"us","size":42190},{"description":"EX-10.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000168/fibk-20251118xex102xsheple.htm","primary":false,"translateUrl":"","linkName":"fibk-20251118xex102xsheple.htm","type":"EX-10.2","id":"NTFILEHnWMKpYq3ieRyohp","market":"us","size":116756}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2025-11-18 13:00","pubTimestamp":1763442000,"title_zh":"Form 8-K - Current report","summary_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20398511","market":"us","labels":[],"media":"sec.gov","original_id":"AN195004725008696-FIBK","pdf_url":"","pub_time":1762923600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000195004725008696/0001950047-25-008696-index.htm","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195004725008696/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILE8pNfNMgkQRv6g1sz","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2025-11-12 13:00","pubTimestamp":1762923600,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20390356","market":"us","labels":[],"media":"sec.gov","original_id":"AN195004725008618-FIBK","pdf_url":"","pub_time":1762750800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000195004725008618/0001950047-25-008618-index.htm","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195004725008618/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILE9TqhihTiD7JX51zH","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2025-11-10 13:00","pubTimestamp":1762750800,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20378289","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041325000165-FIBK","pdf_url":"","pub_time":1762405200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","symbol":"FIBK","title":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000165/0000860413-25-000165-index.htm","us_notice_code":"Form 10-Q","us_title_en":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000165/fibk-20250930.htm","primary":true,"translateUrl":"","linkName":"fibk-20250930.htm","type":"10-Q","id":"NTFILEEvrAyUDFdz9GNMhi","market":"us","size":3811556},{"description":"EX-31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000165/fibk-20250930xex311.htm","primary":false,"translateUrl":"","linkName":"fibk-20250930xex311.htm","type":"EX-31.1","id":"NTFILE5MCshaUQjLNEiyWy","market":"us","size":10060},{"description":"EX-31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000165/fibk-20250930xex312.htm","primary":false,"translateUrl":"","linkName":"fibk-20250930xex312.htm","type":"EX-31.2","id":"NTFILE2ZMpPoq7hRYK54kh","market":"us","size":10228},{"description":"EX-32","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000165/fibk-20250930xex32.htm","primary":false,"translateUrl":"","linkName":"fibk-20250930xex32.htm","type":"EX-32","id":"NTFILEDuAu9Zm9GogsFTcD","market":"us","size":4037}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"Quarterly Report","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"Quarterly Report","pubTime":"2025-11-06 13:00","pubTimestamp":1762405200,"title_zh":"Form 10-Q - Quarterly report [Sections 13 or 15(d","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20363255","market":"us","labels":[],"media":"sec.gov","original_id":"AN195004725008406-FIBK","pdf_url":"","pub_time":1762146000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000195004725008406/0001950047-25-008406-index.htm","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195004725008406/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILE8639Qohm8rKCmLZY","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2025-11-03 13:00","pubTimestamp":1762146000,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20337936","market":"us","labels":[],"media":"sec.gov","original_id":"AN195824425004420-FIBK","pdf_url":"","pub_time":1761710400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000195824425004420/0001958244-25-004420-index.htm","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195824425004420/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILEFUAmjeXz6gZE3CRZ","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2025-10-29 12:00","pubTimestamp":1761710400,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20337579","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041325000160-FIBK","pdf_url":"","pub_time":1761710400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/0000860413-25-000160-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 8.01: Other Events","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/fibk-20250930x8kpr.htm","primary":true,"translateUrl":"","linkName":"fibk-20250930x8kpr.htm","type":"EX-99.1","id":"NTFILEFnFW51YnLoGicr4E","market":"us","size":769194},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/fibk-20251029.htm","primary":false,"translateUrl":"","linkName":"fibk-20251029.htm","type":"8-K","id":"NTFILEEgX1TdpDAZrHV1Xn","market":"us","size":32470},{"description":"EX-99.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip.htm","primary":false,"translateUrl":"","linkName":"sep2025ip.htm","type":"EX-99.2","id":"NTFILE6RWM9KjchfsREJxi","market":"us","size":38250},{"description":"FIBK LOGO","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/fibslogo2linea04a.jpg","primary":false,"translateUrl":"","linkName":"fibslogo2linea04a.jpg","type":"GRAPHIC","id":"NTFILEDi1qcwcSiAvdjhu8","market":"us","size":165531},{"description":"GRAPHIC","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip001.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip001.jpg","type":"GRAPHIC","id":"NTFILED4rHF7CD2CCRaiwz","market":"us","size":139184},{"description":"GRAPHIC","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip002.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip002.jpg","type":"GRAPHIC","id":"NTFILEBcoCf91kQx66j3HS","market":"us","size":282859},{"description":"GRAPHIC","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip003.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip003.jpg","type":"GRAPHIC","id":"NTFILEFSKQXomU7WKA2Z81","market":"us","size":107354},{"description":"GRAPHIC","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip004.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip004.jpg","type":"GRAPHIC","id":"NTFILE6Y33Fjmppz5QPHPS","market":"us","size":95024},{"description":"GRAPHIC","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip005.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip005.jpg","type":"GRAPHIC","id":"NTFILE4QuDnZaA6xhLEzEb","market":"us","size":129885},{"description":"GRAPHIC","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip006.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip006.jpg","type":"GRAPHIC","id":"NTFILE9Svz9NsW9R981YoV","market":"us","size":171066},{"description":"GRAPHIC","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip007.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip007.jpg","type":"GRAPHIC","id":"NTFILEMnKaBZY33yaoTsKd","market":"us","size":163371},{"description":"GRAPHIC","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip008.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip008.jpg","type":"GRAPHIC","id":"NTFILE37gAchXYLMmy6HLy","market":"us","size":75290},{"description":"GRAPHIC","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip009.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip009.jpg","type":"GRAPHIC","id":"NTFILEDtZxWSMVXb96titS","market":"us","size":109303},{"description":"GRAPHIC","seq":17,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip010.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip010.jpg","type":"GRAPHIC","id":"NTFILE277CnW2KHPvESYAr","market":"us","size":85034},{"description":"GRAPHIC","seq":18,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip011.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip011.jpg","type":"GRAPHIC","id":"NTFILEwEMhmXbpeNqZwzn1","market":"us","size":92322},{"description":"GRAPHIC","seq":19,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip012.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip012.jpg","type":"GRAPHIC","id":"NTFILEAKLYEVoJ1LQQrHhS","market":"us","size":120266},{"description":"GRAPHIC","seq":20,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip013.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip013.jpg","type":"GRAPHIC","id":"NTFILECqjDWVKM4ZKX3qsw","market":"us","size":76025},{"description":"GRAPHIC","seq":21,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip014.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip014.jpg","type":"GRAPHIC","id":"NTFILEEYqtDGsJrWJY5gTN","market":"us","size":93068},{"description":"GRAPHIC","seq":22,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip015.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip015.jpg","type":"GRAPHIC","id":"NTFILE9uWKB3RZKjbnC2Mo","market":"us","size":93626},{"description":"GRAPHIC","seq":23,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip016.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip016.jpg","type":"GRAPHIC","id":"NTFILEB5FgaxrCC3fWM4Td","market":"us","size":96419},{"description":"GRAPHIC","seq":24,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip017.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip017.jpg","type":"GRAPHIC","id":"NTFILEBV9Fya3ZyiRVZd7w","market":"us","size":106010},{"description":"GRAPHIC","seq":25,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip018.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip018.jpg","type":"GRAPHIC","id":"NTFILE49DJzQ2oyDtEr5An","market":"us","size":102816},{"description":"GRAPHIC","seq":26,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip019.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip019.jpg","type":"GRAPHIC","id":"NTFILE3QCroQgzPCpgC4Xv","market":"us","size":277597},{"description":"GRAPHIC","seq":27,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip020.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip020.jpg","type":"GRAPHIC","id":"NTFILEyQ78enkTiYckxt73","market":"us","size":112621},{"description":"GRAPHIC","seq":28,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000160/sep2025ip021.jpg","primary":false,"translateUrl":"","linkName":"sep2025ip021.jpg","type":"GRAPHIC","id":"NTFILE6mJZH7m5iGLdB1Qi","market":"us","size":106041}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2025-10-29 12:00","pubTimestamp":1761710400,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 8.01: Other Events","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20272905","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041325000155-FIBK","pdf_url":"","pub_time":1760587200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000155/0000860413-25-000155-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000155/fibk-20251016x8kprxnebraska.htm","primary":true,"translateUrl":"","linkName":"fibk-20251016x8kprxnebraska.htm","type":"EX-99.1","id":"NTFILEHE7hmtgjX6Z1zrnw","market":"us","size":27473},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000155/fibk-20251016.htm","primary":false,"translateUrl":"","linkName":"fibk-20251016.htm","type":"8-K","id":"NTFILE3pJVNYRFKtxYgDcJ","market":"us","size":38002},{"description":"GRAPHIC","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000155/image.jpg","primary":false,"translateUrl":"","linkName":"image.jpg","type":"GRAPHIC","id":"NTFILEEmmQ126oywzkgQjR","market":"us","size":17609},{"description":"GRAPHIC","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000155/image_1.jpg","primary":false,"translateUrl":"","linkName":"image_1.jpg","type":"GRAPHIC","id":"NTFILE5VULUiXGHX6ydKaj","market":"us","size":25135}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2025-10-16 12:00","pubTimestamp":1760587200,"title_zh":"Form 8-K - Current report","summary_en":"Item 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20263811","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041325000152-FIBK","pdf_url":"","pub_time":1760414400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000152/0000860413-25-000152-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"8-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000152/fibk-20251010.htm","primary":true,"translateUrl":"","linkName":"fibk-20251010.htm","type":"8-K","id":"NTFILEEwF73T4gMBhiUHcL","market":"us","size":28699}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2025-10-14 12:00","pubTimestamp":1760414400,"title_zh":"Form 8-K - Current report","summary_en":"Item 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20244210","market":"us","labels":[],"media":"sec.gov","original_id":"AN195824425004382-FIBK","pdf_url":"","pub_time":1759809600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000195824425004382/0001958244-25-004382-index.htm","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195824425004382/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILEH3C3YFcYiAct2zkJ","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2025-10-07 12:00","pubTimestamp":1759809600,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20149015","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041325000147-FIBK","pdf_url":"","pub_time":1757390400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000147/0000860413-25-000147-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"8-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000147/fibk-20250903.htm","primary":true,"translateUrl":"","linkName":"fibk-20250903.htm","type":"8-K","id":"NTFILEExdQJajNLxNFQ7Ts","market":"us","size":32239}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2025-09-09 12:00","pubTimestamp":1757390400,"title_zh":"Form 8-K - Current report","summary_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20120271","market":"us","labels":[],"media":"sec.gov","original_id":"AN196794025000063-FIBK","pdf_url":"","pub_time":1756785600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000196794025000063/0001967940-25-000063-index.htm","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000196794025000063/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILE32c455VhP73h4YFD","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2025-09-02 12:00","pubTimestamp":1756785600,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20118642","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041325000137-FIBK","pdf_url":"","pub_time":1756785600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000137/0000860413-25-000137-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"8-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000137/fibk-20250829.htm","primary":true,"translateUrl":"","linkName":"fibk-20250829.htm","type":"8-K","id":"NTFILEAwcLpFquqr6HwgiW","market":"us","size":30315}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2025-09-02 12:00","pubTimestamp":1756785600,"title_zh":"Form 8-K - Current report","summary_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20110835","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041325000135-FIBK","pdf_url":"","pub_time":1756440000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K/A - Current report: [Amend]","symbol":"FIBK","title":"Form 8-K/A - Current report: [Amend]","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000135/0000860413-25-000135-index.htm","us_notice_code":"Form 8-K/A","us_title_en":"Form 8-K/A - Current report: [Amend]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"8-K/A","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000135/fibk-20250813.htm","primary":true,"translateUrl":"","linkName":"fibk-20250813.htm","type":"8-K/A","id":"NTFILE4yg5Woy2KSve6mf6","market":"us","size":26530}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2025-08-29 12:00","pubTimestamp":1756440000,"title_zh":"Form 8-K/A - Current report: [Amend","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20097135","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041325000129-FIBK","pdf_url":"","pub_time":1756353600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000129/0000860413-25-000129-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"8-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000129/fibk-20250828.htm","primary":true,"translateUrl":"","linkName":"fibk-20250828.htm","type":"8-K","id":"NTFILEAHD8YoypH13pee1B","market":"us","size":34721}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2025-08-28 12:00","pubTimestamp":1756353600,"title_zh":"Form 8-K - Current report","summary_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0}],"pageSize":20,"totalPage":18,"pageCount":1,"totalSize":359,"code":"91000000","status":"200"}]}}