US StockDetailed Quotes

Provided by Tiger Trade Technology Pte. Ltd.

Investar

30.46

+0.15000.49%

Volume:39.34K

Turnover:1.20M

Market Cap:419.31M

PE:12.33

High:30.78

Open:30.26

Low:30.26

Close:30.31

52wk High:31.77

52wk Low:21.43

Shares:13.77M

Float Shares:12.40M

Volume Ratio:0.29

T/O Rate:0.32%

Dividend:0.45

Dividend Rate:1.48%

EPS(TTM):2.47

EPS(LYR):2.13

ROE:9.94%

ROA:1.02%

PB:1.08

PE(LYR):14.30

Loading ...

Overview Company News Filings

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]

Quarterly Report

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

Major Issues Report

Form 8-K - Current report

Major Issues Report

Form 8-K - Current report

Employee Stock Ownership

Form 11-K - Annual report of employee stock purchase, savings and similar plans

Employee Stock Ownership

Form S-8 - Securities to be offered to employees in employee benefit plans

Major Issues Report

Form 8-K - Current report

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]

Quarterly Report

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

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]

Major Issues Report

Form 8-K - Current report

Major Issues Report

Form 8-K - Current report

Major Issues Report

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

Annual Report

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

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

{"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.0a0bd8dc.png","ogUrl":"https://www.itiger.com/stock/ISTR/filings"},"companyName":"Tiger Brokers"},"pageData":{"isMobile":false,"isTiger":false,"isTTM":true,"region":"SGP","license":"TBSG","edition":"fundamental","symbol":"ISTR","isAnalysisPage":false},"__swrFallback__":{"@#url:\"https://hq.skytigris.cn/stock_info/detail/global\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"ISTR\",,,,,undefined,":{"symbol":"ISTR","market":"US","secType":"STK","nameCN":"Investar","latestPrice":30.46,"timestamp":1787598729290,"preClose":30.31,"halted":0,"volume":39340,"delay":0,"changeRate":0.004948861761794858,"floatShares":12400581,"shares":13765800,"eps":2.470113,"marketStatus":"Trading","change":0.15,"latestTime":"08-24 15:13:04 EDT","open":30.26,"high":30.78,"low":30.26,"amount":1198670.05132,"amplitude":0.017156,"askPrice":30.44,"askSize":2,"bidPrice":30.42,"bidSize":41,"shortable":3,"etf":0,"ttmEps":2.470113,"tradingStatus":2,"nextMarketStatus":{"tag":"Post-Mkt","tradingStatus":3,"beginTime":1787601600000},"marketStatusCode":2,"adr":0,"adrRate":0,"listingDate":1404187200000,"exchange":"NASDAQ","adjPreClose":30.31,"dividendRate":0.014773,"preHourTrading":{"tag":"盘前","latestPrice":30.3,"preClose":30.31,"latestTime":"09:28 EDT","volume":250,"amount":7577.19,"timestamp":1787578080170,"change":-0.01,"changeRate":-0.00033,"amplitude":0.016826},"postHourTrading":{"tag":"盘后","latestPrice":30.31,"preClose":30.31,"latestTime":"19:30 EDT","volume":95897,"amount":2906635.81,"timestamp":1787355005890,"change":0,"changeRate":0,"amplitude":0},"volumeRatio":0.291934},"@#url:\"https://hq.skytigris.cn/stock_info/fundamental/all\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"ISTR\",,,,,undefined,":{"symbol":"ISTR","floatShares":12400581,"roa":"1.02%","roe":"9.94%","lyrEps":2.13,"volumeRatio":0.291934,"shares":13765800,"dividePrice":0.45,"high":30.78,"amplitude":0.017156,"preClose":30.31,"low":30.26,"week52Low":21.43,"pbRate":"1.08","psRate":"3.47","week52High":31.77,"institutionHeld":0,"latestPrice":30.46,"committee":0.906977,"eps":2.470113,"divideRate":0.014773,"volume":39340,"delay":0,"ttmEps":2.470113,"open":30.26,"prevYearClose":26.72,"prevWeekClose":30.31,"prevMonthClose":30.12,"prevQuarterClose":29.96,"fiveDayClose":30.91,"twentyDayClose":30.16,"sixtyDayClose":28.28,"dividendPayoutRate":0.19570087907935108,"dividendFrequency":"Q","dividendGrowthYears":10,"dividendGrowthRate":0.06097560975609762,"fiveYearAvgDividendRate":0.019015700024512357},"@#url:\"https://hq.skytigris.cn/fundamental/corporate_actions/details/ISTR\",params:#limit:5,,,undefined,":[{"market":"US","date":"2026-07-20","symbol":"ISTR","fiscalQuarterEnding":"2026/06","expectedEps":0.7,"name":null,"time":"Pre-MKt","type":"earning","dateTimestamp":1784520000000,"reportTimeType":"pre","actualEps":0.75},{"date":"2026-06-30","symbol":"ISTR","amount":0.12,"announcedDate":"2026-06-17","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2026-06-30","defaultRemindTime":1782826200000,"name":"Investar Holding Corporation","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2026-07-31","payableDate":"2026-06-30","currency":"USD","dateTimestamp":1782792000000,"payDate":"2026-07-31"},{"market":"US","date":"2026-04-20","symbol":"ISTR","fiscalQuarterEnding":"2026/03","expectedEps":0.69,"name":null,"time":"Pre-MKt","type":"earning","dateTimestamp":1776657600000,"reportTimeType":"pre","actualEps":0.87},{"date":"2026-03-31","symbol":"ISTR","amount":0.11,"announcedDate":"2026-03-19","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2026-03-31","defaultRemindTime":1774963800000,"name":"Investar Holding Corporation","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2026-04-30","payableDate":"2026-03-31","currency":"USD","dateTimestamp":1774929600000,"payDate":"2026-04-30"},{"market":"US","date":"2026-01-22","symbol":"ISTR","fiscalQuarterEnding":"2025/12","expectedEps":0.54,"name":null,"time":"Post-Mkt","type":"earning","dateTimestamp":1769058000000,"reportTimeType":"post","actualEps":0.58}],"@#url:\"https://hq.skytigris.cn/fundamental/dividend/history\",params:#symbol:\"ISTR\",market:\"US\",,,undefined,":[{"executeDate":"2016-10-03","recordDate":"2016-10-05","paymentDate":"2016-10-31","value":0.011,"currency":"USD"},{"executeDate":"2016-12-30","recordDate":"2017-01-04","paymentDate":"2017-01-31","value":0.0121,"currency":"USD"},{"executeDate":"2017-03-27","recordDate":"2017-03-29","paymentDate":"2017-04-28","value":0.02,"currency":"USD"},{"executeDate":"2017-06-30","recordDate":"2017-07-05","paymentDate":"2017-07-31","value":0.022,"currency":"USD"},{"executeDate":"2017-10-03","recordDate":"2017-10-04","paymentDate":"2017-10-31","value":0.03,"currency":"USD"}],"@#url:\"https://hq.skytigris.cn/fundamental/estimate/recommendation\",params:#symbol:\"ISTR\",market:\"US\",delay:false,,,undefined,":{"strongBuy":0,"buy":0.6667,"hold":0.3333,"sell":0,"strongSell":0,"meanLabel":"BUY","meanPercent":0.6667,"analysts":3,"updateTime":1777003200000},"@#url:\"https://hq.skytigris.cn/value_analysis/stock/ISTR\",params:#withQuantilePoint:true,period:\"5year\",factor:\"peRate\",delay:false,algorithm:1,,,undefined,":{"brief":{"id":"ISTR","date":"2026-08-21","current":12.327371,"percent":0.650525,"low":3.5406,"twenty":6.352414,"median":10.274318,"eighty":15.980014,"high":35.19815,"avg":12.042504,"sd":7.117381,"marketCap":414550712},"quantilePoints":[{"date":"2021-08-27","current":11.720758,"twenty":12.731067,"median":15.892785,"eighty":27.334321,"marketCap":235059801},{"date":"2021-09-03","current":11.684374,"twenty":12.664032,"median":15.892785,"eighty":27.334321,"marketCap":234330126},{"date":"2021-09-10","current":11.284153,"twenty":12.608169,"median":15.892785,"eighty":27.334321,"marketCap":226303693},{"date":"2021-09-17","current":11.252967,"twenty":12.590757,"median":15.885975,"eighty":27.334321,"marketCap":225678257},{"date":"2021-09-24","current":11.252967,"twenty":12.564714,"median":15.885975,"eighty":27.334321,"marketCap":225678257},{"date":"2021-10-01","current":11.372514,"twenty":12.521392,"median":15.885975,"eighty":27.334321,"marketCap":228075763},{"date":"2021-10-08","current":11.26856,"twenty":12.479685,"median":15.885975,"eighty":27.334321,"marketCap":225990975},{"date":"2021-10-15","current":9.496153,"twenty":12.436113,"median":15.885975,"eighty":27.334321,"marketCap":190445347},{"date":"2021-10-22","current":34.321167,"twenty":12.378949,"median":15.892785,"eighty":27.341906,"marketCap":192335820},{"date":"2021-10-29","current":34.514968,"twenty":12.378949,"median":15.937272,"eighty":27.392205,"marketCap":193421879},{"date":"2021-11-05","current":34.01688,"twenty":12.378949,"median":15.953864,"eighty":27.447106,"marketCap":190630594},{"date":"2021-11-12","current":33.924593,"twenty":12.378949,"median":16.01421,"eighty":27.508099,"marketCap":190113419},{"date":"2021-11-19","current":33.481617,"twenty":12.378949,"median":16.061928,"eighty":27.529915,"marketCap":187630981},{"date":"2021-11-26","current":33.149385,"twenty":12.378949,"median":16.061928,"eighty":27.57332,"marketCap":185769152},{"date":"2021-12-03","current":32.983269,"twenty":12.378949,"median":16.061928,"eighty":27.62593,"marketCap":184838237},{"date":"2021-12-10","current":33.333958,"twenty":12.378949,"median":16.061928,"eighty":27.630086,"marketCap":186803501},{"date":"2021-12-17","current":32.300347,"twenty":12.378949,"median":16.061928,"eighty":27.69108,"marketCap":181011145},{"date":"2021-12-23","current":32.761781,"twenty":12.378949,"median":16.061928,"eighty":27.752073,"marketCap":183597018},{"date":"2021-12-31","current":33.979965,"twenty":12.378949,"median":16.061928,"eighty":27.795089,"marketCap":190423724},{"date":"2022-01-07","current":33.998422,"twenty":12.379041,"median":16.085113,"eighty":27.813067,"marketCap":190527159},{"date":"2022-01-14","current":34.865917,"twenty":12.379041,"median":16.085113,"eighty":27.852398,"marketCap":195388601},{"date":"2022-01-21","current":34.386027,"twenty":12.379041,"median":16.085113,"eighty":27.87462,"marketCap":192699293},{"date":"2022-01-28","current":24.695092,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":197560735},{"date":"2022-02-04","current":25.45146,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":203611679},{"date":"2022-02-11","current":25.664794,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":205318355},{"date":"2022-02-18","current":26.026817,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":208214534},{"date":"2022-02-25","current":26.013887,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":208111099},{"date":"2022-03-04","current":26.350051,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":210800407},{"date":"2022-03-11","current":25.19558,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":201564644},{"date":"2022-03-18","current":25.105366,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":200842929},{"date":"2022-03-25","current":24.705845,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":197646764},{"date":"2022-04-01","current":24.383651,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":195069211},{"date":"2022-04-08","current":24.319212,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":194553700},{"date":"2022-04-14","current":24.125896,"twenty":12.379041,"median":16.085113,"eighty":27.911597,"marketCap":193007168},{"date":"2022-04-22","current":15.591131,"twenty":12.379041,"median":16.059423,"eighty":27.911597,"marketCap":198677785},{"date":"2022-04-29","current":15.939039,"twenty":12.379041,"median":15.979783,"eighty":27.911597,"marketCap":203111176},{"date":"2022-05-06","current":16.145054,"twenty":12.379041,"median":15.979783,"eighty":27.911597,"marketCap":205736417},{"date":"2022-05-13","current":16.072328,"twenty":12.379041,"median":15.979783,"eighty":27.911597,"marketCap":204809677},{"date":"2022-05-20","current":16.072328,"twenty":12.379041,"median":15.979783,"eighty":27.911597,"marketCap":204809677},{"date":"2022-05-27","current":17.607643,"twenty":12.379041,"median":15.979783,"eighty":27.911597,"marketCap":224374201},{"date":"2022-06-03","current":18.278334,"twenty":12.379041,"median":15.979783,"eighty":27.911597,"marketCap":232920809},{"date":"2022-06-10","current":18.149044,"twenty":12.379041,"median":15.979783,"eighty":27.909708,"marketCap":231273270},{"date":"2022-06-17","current":17.454112,"twenty":12.379041,"median":15.979783,"eighty":27.883426,"marketCap":222417748},{"date":"2022-06-24","current":17.534918,"twenty":12.378949,"median":15.957277,"eighty":27.875179,"marketCap":223447460},{"date":"2022-07-01","current":18.076319,"twenty":12.378949,"median":15.957277,"eighty":27.831409,"marketCap":230346529},{"date":"2022-07-08","current":18.213689,"twenty":12.378949,"median":15.957277,"eighty":27.812164,"marketCap":232097039},{"date":"2022-07-15","current":17.712691,"twenty":12.378949,"median":15.957277,"eighty":27.764676,"marketCap":225712826},{"date":"2022-07-22","current":18.609639,"twenty":12.378949,"median":15.957277,"eighty":27.633692,"marketCap":237142627},{"date":"2022-07-29","current":13.369505,"twenty":12.378949,"median":15.939039,"eighty":27.62593,"marketCap":220048684},{"date":"2022-08-05","current":13.349112,"twenty":12.378949,"median":15.910599,"eighty":27.579661,"marketCap":219713029},{"date":"2022-08-12","current":13.933478,"twenty":12.378949,"median":15.837536,"eighty":27.558537,"marketCap":229331110},{"date":"2022-08-19","current":13.720428,"twenty":12.378949,"median":15.767887,"eighty":27.558537,"marketCap":225824518},{"date":"2022-08-26","current":13.33085,"twenty":12.378949,"median":15.736767,"eighty":27.558537,"marketCap":219412464},{"date":"2022-09-02","current":13.129974,"twenty":12.378949,"median":15.706647,"eighty":27.558537,"marketCap":216106249},{"date":"2022-09-09","current":12.752571,"twenty":12.378949,"median":15.702443,"eighty":27.558537,"marketCap":209894572},{"date":"2022-09-16","current":12.204728,"twenty":12.368795,"median":15.641202,"eighty":27.558537,"marketCap":200877621},{"date":"2022-09-23","current":12.332558,"twenty":12.357905,"median":15.60848,"eighty":27.522907,"marketCap":202981576},{"date":"2022-09-30","current":12.113421,"twenty":12.324129,"median":15.588847,"eighty":27.401345,"marketCap":199374796},{"date":"2022-10-07","current":12.362994,"twenty":12.28987,"median":15.538988,"eighty":26.94839,"marketCap":203482518},{"date":"2022-10-14","current":13.07519,"twenty":12.28987,"median":15.510314,"eighty":26.795669,"marketCap":215204554},{"date":"2022-10-21","current":12.509085,"twenty":12.28987,"median":15.490681,"eighty":26.566156,"marketCap":205887038},{"date":"2022-10-28","current":6.113542,"twenty":12.226717,"median":15.471632,"eighty":26.292064,"marketCap":206313712},{"date":"2022-11-04","current":6.450892,"twenty":12.185672,"median":15.457958,"eighty":26.026817,"marketCap":217698268},{"date":"2022-11-11","current":6.47434,"twenty":12.166652,"median":15.412147,"eighty":25.954412,"marketCap":218489539},{"date":"2022-11-18","current":6.491925,"twenty":12.105309,"median":15.383802,"eighty":25.641521,"marketCap":219082992},{"date":"2022-11-25","current":6.383482,"twenty":12.064856,"median":15.346703,"eighty":25.600148,"marketCap":215423366},{"date":"2022-12-02","current":6.401067,"twenty":11.953783,"median":15.310708,"eighty":25.284903,"marketCap":216016819},{"date":"2022-12-09","current":6.386413,"twenty":11.886254,"median":15.281259,"eighty":25.131142,"marketCap":215522275},{"date":"2022-12-16","current":6.307279,"twenty":11.867465,"median":15.248536,"eighty":24.919782,"marketCap":212851737},{"date":"2022-12-23","current":6.319002,"twenty":11.797491,"median":15.180588,"eighty":24.699393,"marketCap":213247372},{"date":"2022-12-30","current":6.31021,"twenty":11.78366,"median":15.090396,"eighty":24.633932,"marketCap":212950646},{"date":"2023-01-06","current":6.374689,"twenty":11.765236,"median":15.043718,"eighty":24.463154,"marketCap":215126640},{"date":"2023-01-13","current":6.316071,"twenty":11.750321,"median":14.877597,"eighty":24.357876,"marketCap":213148464},{"date":"2023-01-20","current":6.286763,"twenty":11.729258,"median":14.854963,"eighty":24.323608,"marketCap":212159376},{"date":"2023-01-27","current":5.906336,"twenty":11.696413,"median":14.787381,"eighty":24.288905,"marketCap":210909341},{"date":"2023-02-03","current":5.72055,"twenty":11.688078,"median":14.763649,"eighty":24.157583,"marketCap":204275103},{"date":"2023-02-10","current":5.637362,"twenty":11.667454,"median":14.70421,"eighty":24.115527,"marketCap":201304549},{"date":"2023-02-17","current":5.573584,"twenty":11.642004,"median":14.670292,"eighty":24.064298,"marketCap":199027124},{"date":"2023-02-24","current":5.520899,"twenty":11.632397,"median":14.665583,"eighty":24.019981,"marketCap":197145773},{"date":"2023-03-03","current":5.387798,"twenty":11.613945,"median":14.617237,"eighty":23.941474,"marketCap":192392887},{"date":"2023-03-10","current":5.076973,"twenty":11.587233,"median":14.588246,"eighty":23.745214,"marketCap":181293625},{"date":"2023-03-17","current":4.263658,"twenty":11.538839,"median":14.548093,"eighty":23.638852,"marketCap":152250961},{"date":"2023-03-24","current":4.219245,"twenty":11.505694,"median":14.507532,"eighty":23.443862,"marketCap":150665014},{"date":"2023-03-31","current":3.875043,"twenty":11.478321,"median":14.491943,"eighty":23.092862,"marketCap":138373921},{"date":"2023-04-06","current":3.773497,"twenty":11.455374,"median":14.47117,"eighty":22.938638,"marketCap":134747819},{"date":"2023-04-14","current":3.665366,"twenty":11.439044,"median":14.445429,"eighty":22.382013,"marketCap":130886566},{"date":"2023-04-21","current":4.020258,"twenty":11.395733,"median":14.385309,"eighty":21.921113,"marketCap":143559396},{"date":"2023-04-28","current":4.38189,"twenty":11.361274,"median":14.37296,"eighty":19.482982,"marketCap":128906436},{"date":"2023-05-05","current":3.816485,"twenty":11.312843,"median":14.330687,"eighty":19.16486,"marketCap":112273348},{"date":"2023-05-12","current":3.88716,"twenty":11.282074,"median":14.310203,"eighty":19.024982,"marketCap":114352484},{"date":"2023-05-19","current":3.87012,"twenty":11.252967,"median":14.274451,"eighty":18.945481,"marketCap":113851178},{"date":"2023-05-26","current":3.795954,"twenty":11.225122,"median":14.24352,"eighty":18.822555,"marketCap":111669361},{"date":"2023-06-02","current":3.782469,"twenty":11.211386,"median":14.232634,"eighty":18.710124,"marketCap":111272667},{"date":"2023-06-09","current":4.288146,"twenty":11.190207,"median":14.197007,"eighty":18.573706,"marketCap":126148692},{"date":"2023-06-16","current":3.897089,"twenty":11.173532,"median":14.168649,"eighty":18.434052,"marketCap":114644566},{"date":"2023-06-23","current":4.004967,"twenty":11.093937,"median":14.130189,"eighty":18.280774,"marketCap":117818118},{"date":"2023-06-30","current":4.072391,"twenty":10.993083,"median":14.114283,"eighty":18.221421,"marketCap":119801588},{"date":"2023-07-05","current":4.038679,"twenty":10.961897,"median":14.094067,"eighty":18.213689,"marketCap":118809853},{"date":"2023-07-12","current":3.883604,"twenty":10.920095,"median":14.064669,"eighty":18.079551,"marketCap":114247872},{"date":"2023-07-21","current":4.325229,"twenty":10.832196,"median":14.040812,"eighty":18.002923,"marketCap":127239600},{"date":"2023-07-28","current":5.215196,"twenty":10.765695,"median":14.022695,"eighty":17.877536,"marketCap":138520833},{"date":"2023-08-04","current":5.270717,"twenty":10.681613,"median":14.006386,"eighty":17.839153,"marketCap":139995504},{"date":"2023-08-11","current":5.326284,"twenty":10.57166,"median":13.980421,"eighty":17.750707,"marketCap":141471428},{"date":"2023-08-18","current":4.952445,"twenty":10.241801,"median":13.956265,"eighty":17.692158,"marketCap":131541884},{"date":"2023-08-25","current":4.874716,"twenty":9.932063,"median":13.93305,"eighty":17.633841,"marketCap":129477325},{"date":"2023-09-01","current":4.848806,"twenty":9.729691,"median":13.92607,"eighty":17.553085,"marketCap":128789139},{"date":"2023-09-08","current":4.626723,"twenty":9.589013,"median":13.915656,"eighty":17.524558,"marketCap":122890400},{"date":"2023-09-15","current":4.460161,"twenty":9.211288,"median":13.901913,"eighty":17.398263,"marketCap":118466345},{"date":"2023-09-22","current":4.326912,"twenty":8.687906,"median":13.86417,"eighty":17.248788,"marketCap":114927102},{"date":"2023-09-29","current":3.993788,"twenty":8.128678,"median":13.833006,"eighty":17.121469,"marketCap":106078993},{"date":"2023-10-06","current":4.119635,"twenty":7.925949,"median":13.817367,"eighty":17.06901,"marketCap":109421612},{"date":"2023-10-13","current":4.123336,"twenty":7.669938,"median":13.738859,"eighty":16.972184,"marketCap":109519924},{"date":"2023-10-20","current":4.004892,"twenty":7.157915,"median":13.718431,"eighty":16.8809,"marketCap":106373930},{"date":"2023-10-27","current":4.575215,"twenty":7.107538,"median":13.68498,"eighty":16.819457,"marketCap":100828583},{"date":"2023-11-03","current":4.708344,"twenty":6.67225,"median":13.612908,"eighty":16.699846,"marketCap":103762489},{"date":"2023-11-10","current":4.202715,"twenty":6.477271,"median":13.5439,"eighty":16.645598,"marketCap":92619439},{"date":"2023-11-17","current":4.495001,"twenty":6.450892,"median":13.43846,"eighty":16.58422,"marketCap":99060833},{"date":"2023-11-24","current":4.636715,"twenty":6.433307,"median":13.376853,"eighty":16.540113,"marketCap":102183933},{"date":"2023-12-01","current":4.87255,"twenty":6.398136,"median":13.30978,"eighty":16.448711,"marketCap":107381267},{"date":"2023-12-08","current":5.244298,"twenty":6.384068,"median":13.269979,"eighty":16.423162,"marketCap":115573843},{"date":"2023-12-15","current":6.248902,"twenty":6.376448,"median":13.200312,"eighty":16.314746,"marketCap":137713306},{"date":"2023-12-22","current":6.487883,"twenty":6.358276,"median":13.170109,"eighty":16.199917,"marketCap":142979962},{"date":"2023-12-29","current":6.678182,"twenty":6.354173,"median":13.120453,"eighty":16.147421,"marketCap":147173781},{"date":"2024-01-05","current":6.903886,"twenty":6.352414,"median":13.07519,"eighty":16.122558,"marketCap":152147845},{"date":"2024-01-12","current":7.28006,"twenty":6.352414,"median":12.90424,"eighty":16.10538,"marketCap":160437952},{"date":"2024-01-19","current":7.381848,"twenty":6.350656,"median":12.794099,"eighty":16.066088,"marketCap":162681157},{"date":"2024-01-26","current":7.532317,"twenty":6.352414,"median":12.77017,"eighty":16.010784,"marketCap":165997200},{"date":"2024-02-02","current":10.42724,"twenty":6.352414,"median":12.731067,"eighty":15.954547,"marketCap":173905515},{"date":"2024-02-09","current":10.000565,"twenty":6.352414,"median":12.675204,"eighty":15.939039,"marketCap":166789426},{"date":"2024-02-16","current":9.924582,"twenty":6.352414,"median":12.636916,"eighty":15.8909,"marketCap":165522177},{"date":"2024-02-23","current":9.638183,"twenty":6.352414,"median":12.608169,"eighty":15.81455,"marketCap":160745624},{"date":"2024-03-01","current":9.322561,"twenty":6.354173,"median":12.59141,"eighty":15.750198,"marketCap":155481668},{"date":"2024-03-08","current":9.392699,"twenty":6.354173,"median":12.569511,"eighty":15.736217,"marketCap":156651436},{"date":"2024-03-15","current":9.132084,"twenty":6.354173,"median":12.552252,"eighty":15.706647,"marketCap":152304899},{"date":"2024-03-22","current":9.513321,"twenty":6.354173,"median":12.511144,"eighty":15.643612,"marketCap":158663164},{"date":"2024-03-28","current":9.618894,"twenty":6.354173,"median":12.482478,"eighty":15.634658,"marketCap":160423914},{"date":"2024-04-05","current":9.413613,"twenty":6.352414,"median":12.450469,"eighty":15.589304,"marketCap":157000233},{"date":"2024-04-12","current":9.184871,"twenty":6.352414,"median":12.379133,"eighty":15.555794,"marketCap":153185274},{"date":"2024-04-19","current":9.208331,"twenty":6.352414,"median":12.362994,"eighty":15.511772,"marketCap":153576552},{"date":"2024-04-26","current":9.051069,"twenty":6.354173,"median":12.330422,"eighty":15.510314,"marketCap":159054441},{"date":"2024-05-03","current":9.073335,"twenty":6.354173,"median":12.292991,"eighty":15.510314,"marketCap":159445719},{"date":"2024-05-10","current":9.101168,"twenty":6.354173,"median":12.233499,"eighty":15.490681,"marketCap":159934817},{"date":"2024-05-17","current":8.995405,"twenty":6.354173,"median":12.196964,"eighty":15.477592,"marketCap":158076247},{"date":"2024-05-24","current":8.856243,"twenty":6.354173,"median":12.170577,"eighty":15.457958,"marketCap":155630760},{"date":"2024-05-31","current":8.865462,"twenty":6.354173,"median":12.113421,"eighty":15.43048,"marketCap":155792772},{"date":"2024-06-07","current":8.580202,"twenty":6.354173,"median":12.073832,"eighty":15.412147,"marketCap":150779881},{"date":"2024-06-14","current":8.390028,"twenty":6.354173,"median":11.957777,"eighty":15.383802,"marketCap":147437955},{"date":"2024-06-21","current":8.183074,"twenty":6.352414,"median":11.892811,"eighty":15.389137,"marketCap":143801152},{"date":"2024-06-28","current":8.613762,"twenty":6.352414,"median":11.868246,"eighty":15.389137,"marketCap":151369633},{"date":"2024-07-05","current":8.378841,"twenty":6.352414,"median":11.824711,"eighty":15.279248,"marketCap":147241371},{"date":"2024-07-12","current":9.21225,"twenty":6.352414,"median":11.786434,"eighty":15.098398,"marketCap":161886874},{"date":"2024-07-19","current":9.777179,"twenty":6.352414,"median":11.767168,"eighty":14.993038,"marketCap":171814363},{"date":"2024-07-26","current":12.237972,"twenty":6.352414,"median":11.757221,"eighty":14.860761,"marketCap":184585333},{"date":"2024-08-02","current":11.026001,"twenty":6.352414,"median":11.755752,"eighty":14.860761,"marketCap":166305174},{"date":"2024-08-09","current":10.569843,"twenty":6.352414,"median":11.736351,"eighty":14.860761,"marketCap":159424936},{"date":"2024-08-16","current":11.052067,"twenty":6.352414,"median":11.710363,"eighty":14.860761,"marketCap":166698330},{"date":"2024-08-23","current":11.938318,"twenty":6.352414,"median":11.690594,"eighty":14.860761,"marketCap":180065649},{"date":"2024-08-30","current":12.133814,"twenty":6.352414,"median":11.690594,"eighty":14.860761,"marketCap":183014322},{"date":"2024-09-06","current":11.619007,"twenty":6.352414,"median":11.689572,"eighty":14.860761,"marketCap":175249483},{"date":"2024-09-13","current":11.951351,"twenty":6.352414,"median":11.684374,"eighty":14.860761,"marketCap":180262227},{"date":"2024-09-20","current":12.772436,"twenty":6.352414,"median":11.684374,"eighty":14.860761,"marketCap":192646655},{"date":"2024-09-27","current":12.661655,"twenty":6.352414,"median":11.684374,"eighty":14.860761,"marketCap":190975740},{"date":"2024-10-04","current":12.322794,"twenty":6.352414,"median":11.684374,"eighty":14.860761,"marketCap":185864707},{"date":"2024-10-11","current":12.844118,"twenty":6.352414,"median":11.684374,"eighty":14.860761,"marketCap":193727835},{"date":"2024-10-18","current":13.306793,"twenty":6.352414,"median":11.684374,"eighty":14.860761,"marketCap":200706362},{"date":"2024-10-25","current":11.393217,"twenty":6.352414,"median":11.657666,"eighty":14.860761,"marketCap":201466251},{"date":"2024-11-01","current":11.565504,"twenty":6.352414,"median":11.649243,"eighty":14.860761,"marketCap":204512813},{"date":"2024-11-08","current":12.872592,"twenty":6.352414,"median":11.642793,"eighty":14.860761,"marketCap":227626045},{"date":"2024-11-15","current":13.111591,"twenty":6.352414,"median":11.642793,"eighty":14.860761,"marketCap":231852262},{"date":"2024-11-22","current":13.239428,"twenty":6.352414,"median":11.642793,"eighty":14.860761,"marketCap":234112797},{"date":"2024-11-29","current":13.239428,"twenty":6.352414,"median":11.642793,"eighty":14.860761,"marketCap":234112797},{"date":"2024-12-06","current":13.133823,"twenty":6.352414,"median":11.642793,"eighty":14.860761,"marketCap":232245399},{"date":"2024-12-13","current":12.811453,"twenty":6.352414,"median":11.642793,"eighty":14.857756,"marketCap":226544919},{"date":"2024-12-20","current":12.427943,"twenty":6.352414,"median":11.642793,"eighty":14.813932,"marketCap":219763314},{"date":"2024-12-27","current":12.216735,"twenty":6.352414,"median":11.642793,"eighty":14.813932,"marketCap":216028517},{"date":"2025-01-03","current":11.799876,"twenty":6.352414,"median":11.642793,"eighty":14.813932,"marketCap":208657207},{"date":"2025-01-10","current":10.382557,"twenty":6.350656,"median":11.632397,"eighty":14.817283,"marketCap":183594754},{"date":"2025-01-17","current":11.182925,"twenty":6.350656,"median":11.616504,"eighty":14.817283,"marketCap":197747669},{"date":"2025-01-24","current":9.448904,"twenty":6.350656,"median":11.602412,"eighty":14.817283,"marketCap":191359201},{"date":"2025-01-31","current":9.254782,"twenty":6.350656,"median":11.573681,"eighty":14.715637,"marketCap":187427835},{"date":"2025-02-07","current":9.439198,"twenty":6.350656,"median":11.55152,"eighty":14.599626,"marketCap":191162632},{"date":"2025-02-14","current":9.424639,"twenty":6.350656,"median":11.521854,"eighty":14.488903,"marketCap":190867780},{"date":"2025-02-21","current":9.004849,"twenty":6.350656,"median":11.499668,"eighty":14.329578,"marketCap":182366203},{"date":"2025-02-28","current":9.089778,"twenty":6.350656,"median":11.477966,"eighty":14.235917,"marketCap":184086175},{"date":"2025-03-07","current":8.507411,"twenty":6.348897,"median":11.45551,"eighty":14.212461,"marketCap":172292079},{"date":"2025-03-14","current":8.32064,"twenty":6.348897,"median":11.449277,"eighty":14.212461,"marketCap":168509605},{"date":"2025-03-21","current":8.602038,"twenty":6.348897,"median":11.449277,"eighty":14.212461,"marketCap":174208473},{"date":"2025-03-28","current":8.660258,"twenty":6.362379,"median":11.449277,"eighty":14.212461,"marketCap":175387549},{"date":"2025-04-04","current":8.053798,"twenty":6.362379,"median":11.449277,"eighty":14.212461,"marketCap":163105507},{"date":"2025-04-11","current":7.584174,"twenty":6.366483,"median":11.448664,"eighty":14.210786,"marketCap":153594700},{"date":"2025-04-17","current":7.86058,"twenty":6.366483,"median":11.448664,"eighty":14.210786,"marketCap":159192460},{"date":"2025-04-25","current":8.203278,"twenty":6.362379,"median":11.449277,"eighty":14.212461,"marketCap":179143175},{"date":"2025-05-02","current":8.70249,"twenty":6.362379,"median":11.44805,"eighty":14.212461,"marketCap":190044980},{"date":"2025-05-09","current":8.835929,"twenty":6.362379,"median":11.44805,"eighty":14.212461,"marketCap":192959020},{"date":"2025-05-16","current":8.732242,"twenty":6.362379,"median":11.44805,"eighty":14.212461,"marketCap":190694705},{"date":"2025-05-23","current":8.394133,"twenty":6.362379,"median":11.44805,"eighty":14.212461,"marketCap":183311069},{"date":"2025-05-30","current":8.535379,"twenty":6.362379,"median":11.44805,"eighty":14.212461,"marketCap":186395614},{"date":"2025-06-06","current":8.386977,"twenty":6.362379,"median":11.445281,"eighty":14.212461,"marketCap":183154805},{"date":"2025-06-13","current":8.655604,"twenty":6.362379,"median":11.421818,"eighty":14.212461,"marketCap":189021081},{"date":"2025-06-20","current":8.23184,"twenty":6.358276,"median":11.398447,"eighty":14.214137,"marketCap":179766924},{"date":"2025-06-27","current":8.628555,"twenty":6.358276,"median":11.395329,"eighty":14.214137,"marketCap":188430390},{"date":"2025-07-03","current":10.111729,"twenty":6.358276,"median":11.367316,"eighty":14.214137,"marketCap":220819940},{"date":"2025-07-11","current":9.994518,"twenty":6.358276,"median":11.365085,"eighty":14.214137,"marketCap":218260280},{"date":"2025-07-18","current":9.962961,"twenty":6.358276,"median":11.360879,"eighty":14.214137,"marketCap":217571140},{"date":"2025-07-25","current":9.649898,"twenty":6.358276,"median":11.348517,"eighty":14.214137,"marketCap":214951479},{"date":"2025-08-01","current":9.585845,"twenty":6.358276,"median":11.336176,"eighty":14.214137,"marketCap":213524701},{"date":"2025-08-08","current":9.41964,"twenty":6.358276,"median":11.291428,"eighty":14.214137,"marketCap":209822483},{"date":"2025-08-15","current":9.935845,"twenty":6.358276,"median":11.26004,"eighty":14.214137,"marketCap":221320952},{"date":"2025-08-22","current":9.860841,"twenty":6.358276,"median":11.211386,"eighty":14.214137,"marketCap":219650234},{"date":"2025-08-29","current":10.416754,"twenty":6.358276,"median":11.192719,"eighty":14.214137,"marketCap":232033201},{"date":"2025-09-05","current":10.315278,"twenty":6.354173,"median":11.174079,"eighty":14.215812,"marketCap":229772818},{"date":"2025-09-12","current":10.134386,"twenty":6.358276,"median":11.102332,"eighty":14.214137,"marketCap":225743440},{"date":"2025-09-19","current":10.381458,"twenty":6.358276,"median":11.025083,"eighty":14.214137,"marketCap":231246981},{"date":"2025-09-26","current":10.279982,"twenty":6.358276,"median":11.025083,"eighty":14.214137,"marketCap":228986598},{"date":"2025-10-03","current":10.015261,"twenty":6.358276,"median":11.025083,"eighty":14.214137,"marketCap":223089947},{"date":"2025-10-10","current":10.077029,"twenty":6.358276,"median":10.941796,"eighty":14.214137,"marketCap":224465832},{"date":"2025-10-17","current":9.503468,"twenty":6.358276,"median":10.648041,"eighty":14.214137,"marketCap":211689756},{"date":"2025-10-24","current":9.943846,"twenty":6.358276,"median":10.543776,"eighty":14.214137,"marketCap":229434368},{"date":"2025-10-31","current":10.276018,"twenty":6.358276,"median":10.472163,"eighty":14.214137,"marketCap":237098556},{"date":"2025-11-07","current":10.021755,"twenty":6.358276,"median":10.399655,"eighty":14.214137,"marketCap":231231952},{"date":"2025-11-14","current":10.153564,"twenty":6.358276,"median":10.326308,"eighty":14.214137,"marketCap":234273187},{"date":"2025-11-21","current":9.996243,"twenty":6.358276,"median":10.283473,"eighty":14.214137,"marketCap":230643326},{"date":"2025-11-28","current":10.54474,"twenty":6.358276,"median":10.278,"eighty":14.156177,"marketCap":243298788},{"date":"2025-12-05","current":11.110244,"twenty":6.358276,"median":10.278,"eighty":14.118005,"marketCap":256346666},{"date":"2025-12-12","current":11.539687,"twenty":6.358276,"median":10.278,"eighty":14.111936,"marketCap":266255205},{"date":"2025-12-19","current":11.769291,"twenty":6.358276,"median":10.278,"eighty":14.065025,"marketCap":271552840},{"date":"2025-12-26","current":11.607718,"twenty":6.358276,"median":10.278,"eighty":13.987511,"marketCap":267824875},{"date":"2026-01-02","current":11.361107,"twenty":6.358276,"median":10.278,"eighty":13.943217,"marketCap":262134823},{"date":"2026-01-09","current":16.216079,"twenty":6.358276,"median":10.278,"eighty":13.943217,"marketCap":374153601},{"date":"2026-01-16","current":16.478591,"twenty":6.358276,"median":10.278,"eighty":13.943217,"marketCap":380210539},{"date":"2026-01-23","current":16.978824,"twenty":6.358276,"median":10.278,"eighty":13.943217,"marketCap":388882974},{"date":"2026-01-30","current":16.940635,"twenty":6.358276,"median":10.278,"eighty":14.008771,"marketCap":388008295},{"date":"2026-02-06","current":17.811387,"twenty":6.358276,"median":10.278,"eighty":14.618226,"marketCap":407952004},{"date":"2026-02-13","current":17.691283,"twenty":6.358276,"median":10.278,"eighty":15.357735,"marketCap":405201147},{"date":"2026-02-20","current":17.679273,"twenty":6.358276,"median":10.278,"eighty":15.524131,"marketCap":404926062},{"date":"2026-02-27","current":17.505122,"twenty":6.358276,"median":10.278,"eighty":15.59571,"marketCap":400937320},{"date":"2026-03-06","current":16.736458,"twenty":6.358276,"median":10.278,"eighty":15.729902,"marketCap":383331839},{"date":"2026-03-13","current":16.117924,"twenty":6.358276,"median":10.278,"eighty":15.729902,"marketCap":369164928},{"date":"2026-03-20","current":16.142952,"twenty":6.358276,"median":10.278,"eighty":15.729902,"marketCap":369738172},{"date":"2026-03-27","current":16.214992,"twenty":6.358276,"median":10.278,"eighty":15.748689,"marketCap":371388175},{"date":"2026-04-02","current":16.509155,"twenty":6.358276,"median":10.278,"eighty":15.864854,"marketCap":378125687},{"date":"2026-04-10","current":17.235558,"twenty":6.358276,"median":10.278,"eighty":15.927928,"marketCap":394763217},{"date":"2026-04-17","current":16.874241,"twenty":6.358276,"median":10.278,"eighty":15.950662,"marketCap":386487607},{"date":"2026-04-24","current":13.153378,"twenty":6.358276,"median":10.278,"eighty":15.969753,"marketCap":376646977},{"date":"2026-05-01","current":13.29734,"twenty":6.358276,"median":10.278,"eighty":15.969753,"marketCap":380769344},{"date":"2026-05-08","current":13.662046,"twenty":6.358276,"median":10.278,"eighty":15.969753,"marketCap":391212675},{"date":"2026-05-15","current":13.425082,"twenty":6.358276,"median":10.278,"eighty":15.969753,"marketCap":384427213},{"date":"2026-05-22","current":13.767091,"twenty":6.358276,"median":10.278,"eighty":15.969753,"marketCap":394220659},{"date":"2026-05-29","current":13.62258,"twenty":6.354173,"median":10.276018,"eighty":15.973799,"marketCap":390082583},{"date":"2026-06-05","current":13.791176,"twenty":6.358276,"median":10.278,"eighty":15.969753,"marketCap":394910338},{"date":"2026-06-12","current":14.345136,"twenty":6.358276,"median":10.278,"eighty":15.969753,"marketCap":410772961},{"date":"2026-06-18","current":14.046479,"twenty":6.358276,"median":10.278,"eighty":15.969753,"marketCap":402220938},{"date":"2026-06-26","current":14.190991,"twenty":6.354173,"median":10.276018,"eighty":15.973799,"marketCap":406359014},{"date":"2026-07-02","current":14.552268,"twenty":6.354173,"median":10.276018,"eighty":15.973799,"marketCap":416704202},{"date":"2026-07-10","current":13.954956,"twenty":6.354173,"median":10.276018,"eighty":15.973799,"marketCap":399600157},{"date":"2026-07-17","current":14.547451,"twenty":6.354173,"median":10.276018,"eighty":15.973799,"marketCap":416566267},{"date":"2026-07-24","current":12.017759,"twenty":6.354173,"median":10.276018,"eighty":15.973799,"marketCap":403952928},{"date":"2026-07-31","current":12.226799,"twenty":6.352414,"median":10.274318,"eighty":15.980014,"marketCap":410979394},{"date":"2026-08-07","current":12.345665,"twenty":6.352414,"median":10.274318,"eighty":15.980014,"marketCap":414974836},{"date":"2026-08-14","current":12.640451,"twenty":6.352414,"median":10.274318,"eighty":15.980014,"marketCap":424883481},{"date":"2026-08-21","current":12.333047,"twenty":6.352414,"median":10.274318,"eighty":15.980014,"marketCap":414550712}],"updateTime":1787596784949},"$inf$@#url:\"https://stock-news.skytigris.cn/v3/notice/important/events/list\",params:#symbol:\"ISTR\",pageSize:20,pageCount:1,market:\"us\",,,undefined,":[{"items":[{"cdn_pdf":false,"hasAttachments":true,"id":"21621796","market":"us","labels":[],"media":"sec.gov","original_id":"AN176780326000070-ISTR","pdf_url":"","pub_time":1786680000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","symbol":"ISTR","title":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000176780326000070/0001767803-26-000070-index.htm","us_notice_code":"Form SCHEDULE 13G/A","us_title_en":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000176780326000070/xslSCHEDULE_13G_X02/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"SCHEDULE 13G/A","id":"NTFILEDfnYGxycbQNyW7Ws","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2026-08-14 12:00","pubTimestamp":1786680000,"title_zh":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"21613037","market":"us","labels":[],"media":"sec.gov","original_id":"AN90221926000257-ISTR","pdf_url":"","pub_time":1786593600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","symbol":"ISTR","title":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000090221926000257/0000902219-26-000257-index.htm","us_notice_code":"Form SCHEDULE 13G/A","us_title_en":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/902219/000090221926000257/xslSCHEDULE_13G_X02/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"SCHEDULE 13G/A","id":"NTFILE7UARgXrRqGoJzzWz","market":"us","size":0},{"description":"JOINT FILING AGREEMENT","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/902219/000090221926000257/Rule13D_JointFilingAgreement.htm","primary":false,"translateUrl":"","linkName":"Rule13D_JointFilingAgreement.htm","type":"EX-99","id":"NTFILE6axZVNCasq6mgkYV","market":"us","size":4424}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2026-08-13 12:00","pubTimestamp":1786593600,"title_zh":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"21586505","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926026348-ISTR","pdf_url":"","pub_time":1785988800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","symbol":"ISTR","title":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926026348/0001437749-26-026348-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":"FORM 10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926026348/istr20260630_10q.htm","primary":true,"translateUrl":"","linkName":"istr20260630_10q.htm","type":"10-Q","id":"NTFILEEWmeLoJX2VDe6VDA","market":"us","size":4684329},{"description":"EXHIBIT 31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926026348/ex_964824.htm","primary":false,"translateUrl":"","linkName":"ex_964824.htm","type":"EX-31.1","id":"NTFILEHMNUYpoXNRR9ySzz","market":"us","size":9641},{"description":"EXHIBIT 31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926026348/ex_964825.htm","primary":false,"translateUrl":"","linkName":"ex_964825.htm","type":"EX-31.2","id":"NTFILE3Xdx4rigemwMZTQb","market":"us","size":9587},{"description":"EXHIBIT 32.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926026348/ex_964826.htm","primary":false,"translateUrl":"","linkName":"ex_964826.htm","type":"EX-32.1","id":"NTFILEAMzeRkBSq1DLV1vn","market":"us","size":5008},{"description":"EXHIBIT 32.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926026348/ex_964827.htm","primary":false,"translateUrl":"","linkName":"ex_964827.htm","type":"EX-32.2","id":"NTFILE7ZpHPQ1Eof9ARZvz","market":"us","size":4870},{"description":"EXHIBIT 10.1","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926026348/ex_989496.htm","primary":false,"translateUrl":"","linkName":"ex_989496.htm","type":"EX-10.1","id":"NTFILE2dg7ZQEUKaABsfQS","market":"us","size":105491},{"description":"EXHIBIT 10.2","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926026348/ex_989497.htm","primary":false,"translateUrl":"","linkName":"ex_989497.htm","type":"EX-10.2","id":"NTFILE7xMfgKHyG4kXTkmZ","market":"us","size":105469},{"description":"EXHIBIT 10.3","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926026348/ex_989498.htm","primary":false,"translateUrl":"","linkName":"ex_989498.htm","type":"EX-10.3","id":"NTFILE23xM338ZtE2ZUQBT","market":"us","size":81146},{"description":"EXHIBIT 10.4","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926026348/ex_989499.htm","primary":false,"translateUrl":"","linkName":"ex_989499.htm","type":"EX-10.4","id":"NTFILE8QpKA3L1LyRMV6Ey","market":"us","size":81149}],"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":"2026-08-06 12:00","pubTimestamp":1785988800,"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":"21518950","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926023812-ISTR","pdf_url":"","pub_time":1784520000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"ISTR","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/0001437749-26-023812-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 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":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/ex_964837.htm","primary":true,"translateUrl":"","linkName":"ex_964837.htm","type":"EX-99.1","id":"NTFILEAuCGV5ZbyhdsBiTZ","market":"us","size":1076816},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/istr20260518_8k.htm","primary":false,"translateUrl":"","linkName":"istr20260518_8k.htm","type":"8-K","id":"NTFILEHTtKq4XwY4XVrLnT","market":"us","size":45665},{"description":"EXHIBIT 99.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/ex_964838.htm","primary":false,"translateUrl":"","linkName":"ex_964838.htm","type":"EX-99.2","id":"NTFILE5pVxPx5iE531B1vV","market":"us","size":19604},{"description":"","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide1.jpg","primary":false,"translateUrl":"","linkName":"slide1.jpg","type":"GRAPHIC","id":"NTFILEEXimmBnYDnbaL6uF","market":"us","size":51088},{"description":"","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide2.jpg","primary":false,"translateUrl":"","linkName":"slide2.jpg","type":"GRAPHIC","id":"NTFILEDjJXZySP8VkcNSzm","market":"us","size":351352},{"description":"","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide3.jpg","primary":false,"translateUrl":"","linkName":"slide3.jpg","type":"GRAPHIC","id":"NTFILE83MYqW8vGYezCPdB","market":"us","size":105767},{"description":"","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide4.jpg","primary":false,"translateUrl":"","linkName":"slide4.jpg","type":"GRAPHIC","id":"NTFILEB8YHmjJzQ3BNWWzo","market":"us","size":244224},{"description":"","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide5.jpg","primary":false,"translateUrl":"","linkName":"slide5.jpg","type":"GRAPHIC","id":"NTFILE9x7zZYHTFwixdTLr","market":"us","size":234445},{"description":"","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide6.jpg","primary":false,"translateUrl":"","linkName":"slide6.jpg","type":"GRAPHIC","id":"NTFILEDUbEuDSc5tLNNCoc","market":"us","size":202788},{"description":"","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide7.jpg","primary":false,"translateUrl":"","linkName":"slide7.jpg","type":"GRAPHIC","id":"NTFILEAG7iFb1RBZ2vG7Lw","market":"us","size":77588},{"description":"","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide8.jpg","primary":false,"translateUrl":"","linkName":"slide8.jpg","type":"GRAPHIC","id":"NTFILE3zVs5X5fEg3Rvs5K","market":"us","size":83393},{"description":"","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide9.jpg","primary":false,"translateUrl":"","linkName":"slide9.jpg","type":"GRAPHIC","id":"NTFILECTQ5TzgCX5sgNeBG","market":"us","size":72927},{"description":"","seq":17,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide10.jpg","primary":false,"translateUrl":"","linkName":"slide10.jpg","type":"GRAPHIC","id":"NTFILECB1g3CAd2yTzzwvw","market":"us","size":100052},{"description":"","seq":18,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide11.jpg","primary":false,"translateUrl":"","linkName":"slide11.jpg","type":"GRAPHIC","id":"NTFILE8tFebLZpvS3VP3y7","market":"us","size":106839},{"description":"","seq":19,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide12.jpg","primary":false,"translateUrl":"","linkName":"slide12.jpg","type":"GRAPHIC","id":"NTFILE2qEs7XXZ8Vm7GFgU","market":"us","size":153966},{"description":"","seq":20,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide13.jpg","primary":false,"translateUrl":"","linkName":"slide13.jpg","type":"GRAPHIC","id":"NTFILE2zEnXR4Z4jYY7ByR","market":"us","size":99451},{"description":"","seq":21,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide14.jpg","primary":false,"translateUrl":"","linkName":"slide14.jpg","type":"GRAPHIC","id":"NTFILEEVRG45212VNWi3wk","market":"us","size":133548},{"description":"","seq":22,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide15.jpg","primary":false,"translateUrl":"","linkName":"slide15.jpg","type":"GRAPHIC","id":"NTFILEEoRqvxcB2LfiZRCP","market":"us","size":133855},{"description":"","seq":23,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide16.jpg","primary":false,"translateUrl":"","linkName":"slide16.jpg","type":"GRAPHIC","id":"NTFILEGpiEnc41QnjDSJwf","market":"us","size":96495},{"description":"","seq":24,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide17.jpg","primary":false,"translateUrl":"","linkName":"slide17.jpg","type":"GRAPHIC","id":"NTFILE6rkcKvUMmjtxmvQ7","market":"us","size":80297},{"description":"","seq":25,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide18.jpg","primary":false,"translateUrl":"","linkName":"slide18.jpg","type":"GRAPHIC","id":"NTFILEFpG9fktSEaD6Pupz","market":"us","size":66431},{"description":"","seq":26,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide19.jpg","primary":false,"translateUrl":"","linkName":"slide19.jpg","type":"GRAPHIC","id":"NTFILE81nQ2xGzm1DLkgG7","market":"us","size":63213},{"description":"","seq":27,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide20.jpg","primary":false,"translateUrl":"","linkName":"slide20.jpg","type":"GRAPHIC","id":"NTFILEAxcWefeSgk3eFQ8B","market":"us","size":114007},{"description":"","seq":28,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide21.jpg","primary":false,"translateUrl":"","linkName":"slide21.jpg","type":"GRAPHIC","id":"NTFILEAUS3bRoq2eu6EkrC","market":"us","size":91012},{"description":"","seq":29,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide22.jpg","primary":false,"translateUrl":"","linkName":"slide22.jpg","type":"GRAPHIC","id":"NTFILE56D9qrbebLR1TmLa","market":"us","size":159734},{"description":"","seq":30,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide23.jpg","primary":false,"translateUrl":"","linkName":"slide23.jpg","type":"GRAPHIC","id":"NTFILEGxLRKEfcfHEr8j15","market":"us","size":170696},{"description":"","seq":31,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide24.jpg","primary":false,"translateUrl":"","linkName":"slide24.jpg","type":"GRAPHIC","id":"NTFILE5nCUPqdZcwiSxruM","market":"us","size":18592},{"description":"","seq":32,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide25.jpg","primary":false,"translateUrl":"","linkName":"slide25.jpg","type":"GRAPHIC","id":"NTFILEHXKB6NmNswjNF3EU","market":"us","size":166038},{"description":"","seq":33,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide26.jpg","primary":false,"translateUrl":"","linkName":"slide26.jpg","type":"GRAPHIC","id":"NTFILEEra8xkbQ76nCzyGC","market":"us","size":78166},{"description":"","seq":34,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide27.jpg","primary":false,"translateUrl":"","linkName":"slide27.jpg","type":"GRAPHIC","id":"NTFILEGaoqVgjPWqB31ya5","market":"us","size":89668},{"description":"","seq":35,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide28.jpg","primary":false,"translateUrl":"","linkName":"slide28.jpg","type":"GRAPHIC","id":"NTFILE7VNKnZqt46X3DqxQ","market":"us","size":161864},{"description":"","seq":36,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide29.jpg","primary":false,"translateUrl":"","linkName":"slide29.jpg","type":"GRAPHIC","id":"NTFILEANqDCbxvXwQRdvJw","market":"us","size":128352},{"description":"","seq":37,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide30.jpg","primary":false,"translateUrl":"","linkName":"slide30.jpg","type":"GRAPHIC","id":"NTFILE5NmQNCqsN6jxmBsY","market":"us","size":87772},{"description":"","seq":38,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide31.jpg","primary":false,"translateUrl":"","linkName":"slide31.jpg","type":"GRAPHIC","id":"NTFILE32PhayVAQArzUE5m","market":"us","size":120042},{"description":"","seq":39,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926023812/slide32.jpg","primary":false,"translateUrl":"","linkName":"slide32.jpg","type":"GRAPHIC","id":"NTFILEJ5i1B9Z6ZJwpUa62","market":"us","size":30901}],"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":"2026-07-20 12:00","pubTimestamp":1784520000,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 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":"21418655","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926021336-ISTR","pdf_url":"","pub_time":1782100800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"ISTR","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926021336/0001437749-26-021336-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 4.01: Changes in Registrant's Certifying Accountant;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 16.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926021336/ex_972295.htm","primary":true,"translateUrl":"","linkName":"ex_972295.htm","type":"EX-16.1","id":"NTFILE2pYjEtFr3EfoxGuQ","market":"us","size":2434},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926021336/istr20260604_8k.htm","primary":false,"translateUrl":"","linkName":"istr20260604_8k.htm","type":"8-K","id":"NTFILECaL4CCSg8q1nasLb","market":"us","size":30004}],"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":"2026-06-22 12:00","pubTimestamp":1782100800,"title_zh":"Form 8-K - Current report","summary_en":"Item 4.01: Changes in Registrant's Certifying Accountant;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"21418645","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926021332-ISTR","pdf_url":"","pub_time":1782100800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 11-K - Annual report of employee stock purchase, savings and similar plans","symbol":"ISTR","title":"Form 11-K - Annual report of employee stock purchase, savings and similar plans","titleType":"Employee Stock Ownership","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926021332/0001437749-26-021332-index.htm","us_notice_code":"Form 11-K","us_title_en":"Form 11-K - Annual report of employee stock purchase, savings and similar plans","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 11-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926021332/istr20251231_11k.htm","primary":true,"translateUrl":"","linkName":"istr20251231_11k.htm","type":"11-K","id":"NTFILEhNukPeDheNvfhiuo","market":"us","size":404932},{"description":"EXHIBIT 23.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926021332/ex_959992.htm","primary":false,"translateUrl":"","linkName":"ex_959992.htm","type":"EX-23.1","id":"NTFILEBuX6ZdT59w3HKJt8","market":"us","size":2600}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Employee Stock Ownership","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Employee Stock Ownership","pubTime":"2026-06-22 12:00","pubTimestamp":1782100800,"title_zh":"Form 11-K - Annual report of employee stock purchase, savings and similar plans","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"21352233","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926019424-ISTR","pdf_url":"","pub_time":1780459200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form S-8 - Securities to be offered to employees in employee benefit plans","symbol":"ISTR","title":"Form S-8 - Securities to be offered to employees in employee benefit plans","titleType":"Employee Stock Ownership","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926019424/0001437749-26-019424-index.htm","us_notice_code":"Form S-8","us_title_en":"Form S-8 - Securities to be offered to employees in employee benefit plans","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM S-8","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926019424/istr20260520_s8.htm","primary":true,"translateUrl":"","linkName":"istr20260520_s8.htm","type":"S-8","id":"NTFILECwYfEmCgGmUKXMYT","market":"us","size":36449},{"description":"EXHIBIT 5","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926019424/ex_966034.htm","primary":false,"translateUrl":"","linkName":"ex_966034.htm","type":"EX-5","id":"NTFILEEyzPg67h91YzAQ5o","market":"us","size":6283},{"description":"EXHIBIT 23.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926019424/ex_966035.htm","primary":false,"translateUrl":"","linkName":"ex_966035.htm","type":"EX-23.1","id":"NTFILE715fvosp1eE4rsR1","market":"us","size":2236},{"description":"EXHIBIT FILING FEES","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926019424/ex_966162.htm","primary":false,"translateUrl":"","linkName":"ex_966162.htm","type":"EX-FILING FEES","id":"NTFILE3Rr24wv8jDyUT2zr","market":"us","size":15966}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Employee Stock Ownership","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Employee Stock Ownership","pubTime":"2026-06-03 12:00","pubTimestamp":1780459200,"title_zh":"Form S-8 - Securities to be offered to employees in employee benefit plans","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"21303364","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926018275-ISTR","pdf_url":"","pub_time":1779422400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"ISTR","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926018275/0001437749-26-018275-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 5.07: Submission of Matters to a Vote of Security Holders;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 10.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926018275/ex_963922.htm","primary":true,"translateUrl":"","linkName":"ex_963922.htm","type":"EX-10.1","id":"NTFILEJ9CnQwYUHqxu8DVt","market":"us","size":221192},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926018275/istr20260515c_8k.htm","primary":false,"translateUrl":"","linkName":"istr20260515c_8k.htm","type":"8-K","id":"NTFILE7xnbPKVLx4d7Sccd","market":"us","size":46640}],"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":"2026-05-22 12:00","pubTimestamp":1779422400,"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 5.07: Submission of Matters to a Vote of Security Holders;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"21270793","market":"us","labels":[],"media":"sec.gov","original_id":"AN176780326000045-ISTR","pdf_url":"","pub_time":1778817600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","symbol":"ISTR","title":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000176780326000045/0001767803-26-000045-index.htm","us_notice_code":"Form SCHEDULE 13G/A","us_title_en":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000176780326000045/xslSCHEDULE_13G_X02/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"SCHEDULE 13G/A","id":"NTFILEBUN3ddzKo7DoSq3n","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2026-05-15 12:00","pubTimestamp":1778817600,"title_zh":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"21266585","market":"us","labels":[],"media":"sec.gov","original_id":"AN93687226000012-ISTR","pdf_url":"","pub_time":1778817600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","symbol":"ISTR","title":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000093687226000012/0000936872-26-000012-index.htm","us_notice_code":"Form SCHEDULE 13G/A","us_title_en":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/936872/000093687226000012/xslSCHEDULE_13G_X02/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"SCHEDULE 13G/A","id":"NTFILE24qbSQWLu8HMaMvE","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2026-05-15 12:00","pubTimestamp":1778817600,"title_zh":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"21265903","market":"us","labels":[],"media":"sec.gov","original_id":"AN90221926000150-ISTR","pdf_url":"","pub_time":1778817600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","symbol":"ISTR","title":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000090221926000150/0000902219-26-000150-index.htm","us_notice_code":"Form SCHEDULE 13G/A","us_title_en":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/902219/000090221926000150/xslSCHEDULE_13G_X02/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"SCHEDULE 13G/A","id":"NTFILE7kkdEaWD2CdoGMiv","market":"us","size":0},{"description":"JOINT FILING AGREEMENT","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/902219/000090221926000150/Rule13D_JointFilingAgreement.htm","primary":false,"translateUrl":"","linkName":"Rule13D_JointFilingAgreement.htm","type":"EX-99","id":"NTFILE2qxL8p3r5koiLJr5","market":"us","size":4412}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2026-05-15 12:00","pubTimestamp":1778817600,"title_zh":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"21234717","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926015924-ISTR","pdf_url":"","pub_time":1778212800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","symbol":"ISTR","title":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926015924/0001437749-26-015924-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":"FORM 10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926015924/istr20260331_10q.htm","primary":true,"translateUrl":"","linkName":"istr20260331_10q.htm","type":"10-Q","id":"NTFILE3vtJgcGPzjiLpxYn","market":"us","size":3912400},{"description":"EXHIBIT 31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926015924/ex_940950.htm","primary":false,"translateUrl":"","linkName":"ex_940950.htm","type":"EX-31.1","id":"NTFILEASMm1Gf7syDijjAi","market":"us","size":9639},{"description":"EXHIBIT 31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926015924/ex_940951.htm","primary":false,"translateUrl":"","linkName":"ex_940951.htm","type":"EX-31.2","id":"NTFILE3DZDojSuXzbCgjeX","market":"us","size":9588},{"description":"EXHIBIT 32.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926015924/ex_940952.htm","primary":false,"translateUrl":"","linkName":"ex_940952.htm","type":"EX-32.1","id":"NTFILEBgmNQRwxm2fv72Y7","market":"us","size":5009},{"description":"EXHIBIT 32.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926015924/ex_940953.htm","primary":false,"translateUrl":"","linkName":"ex_940953.htm","type":"EX-32.2","id":"NTFILEEWQu4jwhEpp8BYwP","market":"us","size":4871}],"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":"2026-05-08 12:00","pubTimestamp":1778212800,"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":"21136787","market":"us","labels":[],"media":"sec.gov","original_id":"AN201238326001694-ISTR","pdf_url":"","pub_time":1777262400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","symbol":"ISTR","title":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000201238326001694/0002012383-26-001694-index.htm","us_notice_code":"Form SCHEDULE 13G/A","us_title_en":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000201238326001694/xslSCHEDULE_13G_X02/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"SCHEDULE 13G/A","id":"NTFILEAaDtN8tppjd2Hi1f","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2026-04-27 12:00","pubTimestamp":1777262400,"title_zh":"Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"21031347","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926012741-ISTR","pdf_url":"","pub_time":1776657600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"ISTR","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/0001437749-26-012741-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/ex_942761.htm","primary":true,"translateUrl":"","linkName":"ex_942761.htm","type":"EX-99.1","id":"NTFILE3gAZEbKNQ4sVHeWn","market":"us","size":1049215},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/istr20260407_8k.htm","primary":false,"translateUrl":"","linkName":"istr20260407_8k.htm","type":"8-K","id":"NTFILE7HqSjMwPHpHxXUoH","market":"us","size":28450},{"description":"EXHIBIT 99.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/ex_942762.htm","primary":false,"translateUrl":"","linkName":"ex_942762.htm","type":"EX-99.2","id":"NTFILEAYLStwi9h6b5JWnk","market":"us","size":19706},{"description":"","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide1.jpg","primary":false,"translateUrl":"","linkName":"slide1.jpg","type":"GRAPHIC","id":"NTFILE9i5SUTppDB67ATpS","market":"us","size":51050},{"description":"","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide2.jpg","primary":false,"translateUrl":"","linkName":"slide2.jpg","type":"GRAPHIC","id":"NTFILEzhs4ME1h7AYSumTo","market":"us","size":351356},{"description":"","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide3.jpg","primary":false,"translateUrl":"","linkName":"slide3.jpg","type":"GRAPHIC","id":"NTFILEFX3v9mMmGxjD7fhU","market":"us","size":105857},{"description":"","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide4.jpg","primary":false,"translateUrl":"","linkName":"slide4.jpg","type":"GRAPHIC","id":"NTFILE9hXzUNZsqLmjphgt","market":"us","size":212881},{"description":"","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide5.jpg","primary":false,"translateUrl":"","linkName":"slide5.jpg","type":"GRAPHIC","id":"NTFILE7HiXzcKAdkYX7ZdD","market":"us","size":215124},{"description":"","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide6.jpg","primary":false,"translateUrl":"","linkName":"slide6.jpg","type":"GRAPHIC","id":"NTFILE2XxBXHL1i7kRKnPU","market":"us","size":205390},{"description":"","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide7.jpg","primary":false,"translateUrl":"","linkName":"slide7.jpg","type":"GRAPHIC","id":"NTFILEDcCmYfYSyjPgx1ZR","market":"us","size":77588},{"description":"","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide8.jpg","primary":false,"translateUrl":"","linkName":"slide8.jpg","type":"GRAPHIC","id":"NTFILE5TG8KyKFoQx4EZi3","market":"us","size":83654},{"description":"","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide9.jpg","primary":false,"translateUrl":"","linkName":"slide9.jpg","type":"GRAPHIC","id":"NTFILE8S3nkGHAF3cT7E5F","market":"us","size":74388},{"description":"","seq":17,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide10.jpg","primary":false,"translateUrl":"","linkName":"slide10.jpg","type":"GRAPHIC","id":"NTFILE9vpiGtL7bNihjYW3","market":"us","size":101555},{"description":"","seq":18,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide11.jpg","primary":false,"translateUrl":"","linkName":"slide11.jpg","type":"GRAPHIC","id":"NTFILEFgB1UEkovEKDYGSJ","market":"us","size":106200},{"description":"","seq":19,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide12.jpg","primary":false,"translateUrl":"","linkName":"slide12.jpg","type":"GRAPHIC","id":"NTFILEDYb1KrvgcLetMCY1","market":"us","size":146829},{"description":"","seq":20,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide13.jpg","primary":false,"translateUrl":"","linkName":"slide13.jpg","type":"GRAPHIC","id":"NTFILE7TwoDjskHRnUNFhN","market":"us","size":99516},{"description":"","seq":21,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide14.jpg","primary":false,"translateUrl":"","linkName":"slide14.jpg","type":"GRAPHIC","id":"NTFILE7nPSkeBc6oNigB4Z","market":"us","size":133096},{"description":"","seq":22,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide15.jpg","primary":false,"translateUrl":"","linkName":"slide15.jpg","type":"GRAPHIC","id":"NTFILEEvtMXi2CBtrGqyoR","market":"us","size":164431},{"description":"","seq":23,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide16.jpg","primary":false,"translateUrl":"","linkName":"slide16.jpg","type":"GRAPHIC","id":"NTFILE3oR9Q4g1z1MuLtjf","market":"us","size":97417},{"description":"","seq":24,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide17.jpg","primary":false,"translateUrl":"","linkName":"slide17.jpg","type":"GRAPHIC","id":"NTFILE2VNvpFfDuqUdnZ3E","market":"us","size":79830},{"description":"","seq":25,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide18.jpg","primary":false,"translateUrl":"","linkName":"slide18.jpg","type":"GRAPHIC","id":"NTFILEFyKCV1M7StmRkUYD","market":"us","size":66422},{"description":"","seq":26,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide19.jpg","primary":false,"translateUrl":"","linkName":"slide19.jpg","type":"GRAPHIC","id":"NTFILE8CadKq4E7dqGS2GM","market":"us","size":63496},{"description":"","seq":27,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide20.jpg","primary":false,"translateUrl":"","linkName":"slide20.jpg","type":"GRAPHIC","id":"NTFILEEag8JZNZhuDVqZSx","market":"us","size":113797},{"description":"","seq":28,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide21.jpg","primary":false,"translateUrl":"","linkName":"slide21.jpg","type":"GRAPHIC","id":"NTFILEDDBoTQsoBR56XzHX","market":"us","size":90676},{"description":"","seq":29,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide22.jpg","primary":false,"translateUrl":"","linkName":"slide22.jpg","type":"GRAPHIC","id":"NTFILE126y9G8R1JKPqGTw","market":"us","size":171771},{"description":"","seq":30,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide23.jpg","primary":false,"translateUrl":"","linkName":"slide23.jpg","type":"GRAPHIC","id":"NTFILE13JWiWXToMvv1FhV","market":"us","size":170828},{"description":"","seq":31,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide24.jpg","primary":false,"translateUrl":"","linkName":"slide24.jpg","type":"GRAPHIC","id":"NTFILEHzbiLXEgVSMPqfs1","market":"us","size":18592},{"description":"","seq":32,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide25.jpg","primary":false,"translateUrl":"","linkName":"slide25.jpg","type":"GRAPHIC","id":"NTFILE6mi9hrgw4yb7LZn3","market":"us","size":163599},{"description":"","seq":33,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide26.jpg","primary":false,"translateUrl":"","linkName":"slide26.jpg","type":"GRAPHIC","id":"NTFILEB44VpB1tjyPrCx3o","market":"us","size":74438},{"description":"","seq":34,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide27.jpg","primary":false,"translateUrl":"","linkName":"slide27.jpg","type":"GRAPHIC","id":"NTFILE4rYNE4uaygLySfEz","market":"us","size":87773},{"description":"","seq":35,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide28.jpg","primary":false,"translateUrl":"","linkName":"slide28.jpg","type":"GRAPHIC","id":"NTFILEFi936U6nu1GL5foi","market":"us","size":155910},{"description":"","seq":36,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide29.jpg","primary":false,"translateUrl":"","linkName":"slide29.jpg","type":"GRAPHIC","id":"NTFILEH922r2m1Jkf2PoKC","market":"us","size":128096},{"description":"","seq":37,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide30.jpg","primary":false,"translateUrl":"","linkName":"slide30.jpg","type":"GRAPHIC","id":"NTFILEA1U5qGc7EvK4stiN","market":"us","size":154796},{"description":"","seq":38,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide31.jpg","primary":false,"translateUrl":"","linkName":"slide31.jpg","type":"GRAPHIC","id":"NTFILEEGsu2z8WToUkej6R","market":"us","size":119868},{"description":"","seq":39,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926012741/slide32.jpg","primary":false,"translateUrl":"","linkName":"slide32.jpg","type":"GRAPHIC","id":"NTFILEE9sFzW1BAc8iaVUQ","market":"us","size":30901}],"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":"2026-04-20 12:00","pubTimestamp":1776657600,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20929460","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926010364-ISTR","pdf_url":"","pub_time":1774843200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"ISTR","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926010364/0001437749-26-010364-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 23.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926010364/ex_936651.htm","primary":true,"translateUrl":"","linkName":"ex_936651.htm","type":"EX-23.1","id":"NTFILE2Z5LF6PaaGDoUeUi","market":"us","size":3181},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926010364/istr20260320_8k.htm","primary":false,"translateUrl":"","linkName":"istr20260320_8k.htm","type":"8-K","id":"NTFILE2eG7L8kUrwr4J3Cp","market":"us","size":36176},{"description":"EXHIBIT 99.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926010364/ex_935434.htm","primary":false,"translateUrl":"","linkName":"ex_935434.htm","type":"EX-99.1","id":"NTFILE6NSyJMo9qvDKNJT7","market":"us","size":2105994},{"description":"EXHIBIT 99.2","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926010364/ex_935435.htm","primary":false,"translateUrl":"","linkName":"ex_935435.htm","type":"EX-99.2","id":"NTFILEE7SBei9nAbezheLp","market":"us","size":797437},{"description":"EXHIBIT 99.3","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926010364/ex_935436.htm","primary":false,"translateUrl":"","linkName":"ex_935436.htm","type":"EX-99.3","id":"NTFILECKmkGMeCcXBQFanh","market":"us","size":358702}],"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":"2026-03-30 12:00","pubTimestamp":1774843200,"title_zh":"Form 8-K - Current report","summary_en":"Item 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20856584","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926008884-ISTR","pdf_url":"","pub_time":1773869105000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K/A - Current report: [Amend]","symbol":"ISTR","title":"Form 8-K/A - Current report: [Amend]","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/0001437749-26-008884-index.html","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":"FORM 8-K/A","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008884/istr20260310_8ka.htm","primary":true,"translateUrl":"","linkName":"istr20260310_8ka.htm","type":"8-K/A","id":"NTFILE7rri7yYEzzvgM4CV","market":"us","size":35246},{"description":"EXHIBIT 23.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008884/ex_933214.htm","primary":false,"translateUrl":"","linkName":"ex_933214.htm","type":"EX-23.1","id":"NTFILE5fyZLUo8iybPhi5i","market":"us","size":3163},{"description":"EXHIBIT 99.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008884/ex_930981.htm","primary":false,"translateUrl":"","linkName":"ex_930981.htm","type":"EX-99.1","id":"NTFILECV3WePkWRxtrSjic","market":"us","size":351029}],"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":"2026-03-19 05:25","pubTimestamp":1773869105,"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":"20841087","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926008446-ISTR","pdf_url":"","pub_time":1773633600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","symbol":"ISTR","title":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","titleType":"Annual Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008446/0001437749-26-008446-index.htm","us_notice_code":"Form 10-K","us_title_en":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 10-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008446/istr20251231_10k.htm","primary":true,"translateUrl":"","linkName":"istr20251231_10k.htm","type":"10-K","id":"NTFILEGYSN9d8vHCsGazVc","market":"us","size":5618098},{"description":"EXHIBIT 19.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008446/ex_873812.htm","primary":false,"translateUrl":"","linkName":"ex_873812.htm","type":"EX-19.1","id":"NTFILEDF4iFLXptebtgyN4","market":"us","size":59892},{"description":"EXHIBIT 21.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008446/ex_873813.htm","primary":false,"translateUrl":"","linkName":"ex_873813.htm","type":"EX-21.1","id":"NTFILEGCD4gbcPffHjNhrJ","market":"us","size":4910},{"description":"EXHIBIT 23.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008446/ex_873814.htm","primary":false,"translateUrl":"","linkName":"ex_873814.htm","type":"EX-23.1","id":"NTFILECvCDMFmL3HbbnUYn","market":"us","size":2778},{"description":"EXHIBIT 31.1","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008446/ex_873815.htm","primary":false,"translateUrl":"","linkName":"ex_873815.htm","type":"EX-31.1","id":"NTFILEGrLeSm9ZiQqof39c","market":"us","size":10323},{"description":"EXHIBIT 31.2","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008446/ex_873816.htm","primary":false,"translateUrl":"","linkName":"ex_873816.htm","type":"EX-31.2","id":"NTFILEFDHW7pAsAoF2JY9N","market":"us","size":10561},{"description":"EXHIBIT 32.1","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008446/ex_873817.htm","primary":false,"translateUrl":"","linkName":"ex_873817.htm","type":"EX-32.1","id":"NTFILE272di2YQPPwc2eck","market":"us","size":4823},{"description":"EXHIBIT 32.2","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008446/ex_873818.htm","primary":false,"translateUrl":"","linkName":"ex_873818.htm","type":"EX-32.2","id":"NTFILE95gkSicHjttA6zFA","market":"us","size":4841},{"description":"","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926008446/istrtotalreturngraph.jpg","primary":false,"translateUrl":"","linkName":"istrtotalreturngraph.jpg","type":"GRAPHIC","id":"NTFILEBYKaUZHpAQCPHrWp","market":"us","size":39939}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"Annual Report","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"Annual Report","pubTime":"2026-03-16 12:00","pubTimestamp":1773633600,"title_zh":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20666685","market":"us","labels":[],"media":"sec.gov","original_id":"AN165495426000612-ISTR","pdf_url":"","pub_time":1769490000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"ISTR","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000165495426000612/0001654954-26-000612-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/1602658/000165495426000612/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILEFSzcRoksgziveBKi","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":"2026-01-27 13:00","pubTimestamp":1769490000,"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":"20654807","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926001783-ISTR","pdf_url":"","pub_time":1769058000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"ISTR","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/0001437749-26-001783-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/ex_873800.htm","primary":true,"translateUrl":"","linkName":"ex_873800.htm","type":"EX-99.1","id":"NTFILE3zb2FoQPNkPCFWNb","market":"us","size":1190484},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/istr20251021_8k.htm","primary":false,"translateUrl":"","linkName":"istr20251021_8k.htm","type":"8-K","id":"NTFILEE8UVVwhdANE4TYKh","market":"us","size":28374},{"description":"EXHIBIT 99.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/ex_873801.htm","primary":false,"translateUrl":"","linkName":"ex_873801.htm","type":"EX-99.2","id":"NTFILEAbrKJvsG2WvJVFE1","market":"us","size":21382},{"description":"","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide1.jpg","primary":false,"translateUrl":"","linkName":"slide1.jpg","type":"GRAPHIC","id":"NTFILE7KfapusfVBnk4hrT","market":"us","size":51077},{"description":"","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide2.jpg","primary":false,"translateUrl":"","linkName":"slide2.jpg","type":"GRAPHIC","id":"NTFILE9Yqt1sPQ3zSAPdbY","market":"us","size":360262},{"description":"","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide3.jpg","primary":false,"translateUrl":"","linkName":"slide3.jpg","type":"GRAPHIC","id":"NTFILEETrqBn9cgHhYM46s","market":"us","size":110585},{"description":"","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide4.jpg","primary":false,"translateUrl":"","linkName":"slide4.jpg","type":"GRAPHIC","id":"NTFILE3V8Zh6F7r3gjTyJS","market":"us","size":286789},{"description":"","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide5.jpg","primary":false,"translateUrl":"","linkName":"slide5.jpg","type":"GRAPHIC","id":"NTFILEEiTwktBS1G14ws2q","market":"us","size":227810},{"description":"","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide6.jpg","primary":false,"translateUrl":"","linkName":"slide6.jpg","type":"GRAPHIC","id":"NTFILE3wAHJvG7gsm6DFN4","market":"us","size":214709},{"description":"","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide7.jpg","primary":false,"translateUrl":"","linkName":"slide7.jpg","type":"GRAPHIC","id":"NTFILEFePU6uNj5vwirz3R","market":"us","size":205383},{"description":"","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide8.jpg","primary":false,"translateUrl":"","linkName":"slide8.jpg","type":"GRAPHIC","id":"NTFILE832SeWnqWAxH3TTt","market":"us","size":77597},{"description":"","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide9.jpg","primary":false,"translateUrl":"","linkName":"slide9.jpg","type":"GRAPHIC","id":"NTFILE4u4TmzVZWgYHc8TE","market":"us","size":82470},{"description":"","seq":17,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide10.jpg","primary":false,"translateUrl":"","linkName":"slide10.jpg","type":"GRAPHIC","id":"NTFILE12W7rHvJegstppzS","market":"us","size":67899},{"description":"","seq":18,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide11.jpg","primary":false,"translateUrl":"","linkName":"slide11.jpg","type":"GRAPHIC","id":"NTFILE8erskvwMw9YNo5v8","market":"us","size":106148},{"description":"","seq":19,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide12.jpg","primary":false,"translateUrl":"","linkName":"slide12.jpg","type":"GRAPHIC","id":"NTFILEFaDVS3NQbnpzHf7G","market":"us","size":112914},{"description":"","seq":20,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide13.jpg","primary":false,"translateUrl":"","linkName":"slide13.jpg","type":"GRAPHIC","id":"NTFILEANDobxt6nBRRsVyK","market":"us","size":160043},{"description":"","seq":21,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide14.jpg","primary":false,"translateUrl":"","linkName":"slide14.jpg","type":"GRAPHIC","id":"NTFILEEfoqrUC4YaJFfehk","market":"us","size":107847},{"description":"","seq":22,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide15.jpg","primary":false,"translateUrl":"","linkName":"slide15.jpg","type":"GRAPHIC","id":"NTFILE6NeVHugwMUwDpLw8","market":"us","size":133915},{"description":"","seq":23,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide16.jpg","primary":false,"translateUrl":"","linkName":"slide16.jpg","type":"GRAPHIC","id":"NTFILECpk11wFJPrr8Yxgq","market":"us","size":173507},{"description":"","seq":24,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide17.jpg","primary":false,"translateUrl":"","linkName":"slide17.jpg","type":"GRAPHIC","id":"NTFILEAyV5YuWQJLn9d7y8","market":"us","size":97579},{"description":"","seq":25,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide18.jpg","primary":false,"translateUrl":"","linkName":"slide18.jpg","type":"GRAPHIC","id":"NTFILE84xgxaFqb1wQUfhr","market":"us","size":80300},{"description":"","seq":26,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide19.jpg","primary":false,"translateUrl":"","linkName":"slide19.jpg","type":"GRAPHIC","id":"NTFILEGBEWAt6SHkHKuCrs","market":"us","size":64206},{"description":"","seq":27,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide20.jpg","primary":false,"translateUrl":"","linkName":"slide20.jpg","type":"GRAPHIC","id":"NTFILE3N8EKbgv6qzE42qh","market":"us","size":62876},{"description":"","seq":28,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide21.jpg","primary":false,"translateUrl":"","linkName":"slide21.jpg","type":"GRAPHIC","id":"NTFILEAxjtirY3yi6xbsoy","market":"us","size":112397},{"description":"","seq":29,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide22.jpg","primary":false,"translateUrl":"","linkName":"slide22.jpg","type":"GRAPHIC","id":"NTFILE6dVVj3ipQESVpJBT","market":"us","size":93582},{"description":"","seq":30,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide23.jpg","primary":false,"translateUrl":"","linkName":"slide23.jpg","type":"GRAPHIC","id":"NTFILE7GwEceMRnkoTiboy","market":"us","size":179829},{"description":"","seq":31,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide24.jpg","primary":false,"translateUrl":"","linkName":"slide24.jpg","type":"GRAPHIC","id":"NTFILEHsAH4df6vkrNChxw","market":"us","size":63635},{"description":"","seq":32,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide25.jpg","primary":false,"translateUrl":"","linkName":"slide25.jpg","type":"GRAPHIC","id":"NTFILE4tYuBtuN4otoAVqa","market":"us","size":172619},{"description":"","seq":33,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide26.jpg","primary":false,"translateUrl":"","linkName":"slide26.jpg","type":"GRAPHIC","id":"NTFILE3b56ZaMvbbQG58Eq","market":"us","size":18592},{"description":"","seq":34,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide27.jpg","primary":false,"translateUrl":"","linkName":"slide27.jpg","type":"GRAPHIC","id":"NTFILE9TwSrKBkCzLNToBi","market":"us","size":163092},{"description":"","seq":35,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide28.jpg","primary":false,"translateUrl":"","linkName":"slide28.jpg","type":"GRAPHIC","id":"NTFILErFZyg5kU56r68RNw","market":"us","size":76170},{"description":"","seq":36,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide29.jpg","primary":false,"translateUrl":"","linkName":"slide29.jpg","type":"GRAPHIC","id":"NTFILE2TLFu15uR3BcaC44","market":"us","size":86088},{"description":"","seq":37,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide30.jpg","primary":false,"translateUrl":"","linkName":"slide30.jpg","type":"GRAPHIC","id":"NTFILEDMLnQxozHkydAyzY","market":"us","size":152851},{"description":"","seq":38,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide31.jpg","primary":false,"translateUrl":"","linkName":"slide31.jpg","type":"GRAPHIC","id":"NTFILEE2nWrXubyyZSLYwS","market":"us","size":132356},{"description":"","seq":39,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide32.jpg","primary":false,"translateUrl":"","linkName":"slide32.jpg","type":"GRAPHIC","id":"NTFILE3FJ9wwbZ5T6vViSs","market":"us","size":187445},{"description":"","seq":40,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide33.jpg","primary":false,"translateUrl":"","linkName":"slide33.jpg","type":"GRAPHIC","id":"NTFILE9hZgkERcwvkHpRNr","market":"us","size":91790},{"description":"","seq":41,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide34.jpg","primary":false,"translateUrl":"","linkName":"slide34.jpg","type":"GRAPHIC","id":"NTFILE3DhjqFgPEzgbCbgW","market":"us","size":132199},{"description":"","seq":42,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926001783/slide35.jpg","primary":false,"translateUrl":"","linkName":"slide35.jpg","type":"GRAPHIC","id":"NTFILEECxTQHq5rCfkhvE3","market":"us","size":30901}],"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":"2026-01-22 13:00","pubTimestamp":1769058000,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"20608715","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774926000650-ISTR","pdf_url":"","pub_time":1767675600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"ISTR","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926000650/0001437749-26-000650-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.01: Completion of Acquisition or Disposition of Assets;\nItem 2.03: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant;\nItem 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\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":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926000650/ex_903222.htm","primary":true,"translateUrl":"","linkName":"ex_903222.htm","type":"EX-99.1","id":"NTFILE9QxjD66ZKdgZPs4Y","market":"us","size":9990},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1602658/000143774926000650/istr20251230_8k.htm","primary":false,"translateUrl":"","linkName":"istr20251230_8k.htm","type":"8-K","id":"NTFILED5H8ZxVsTyn77VaU","market":"us","size":37497}],"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":"2026-01-06 13:00","pubTimestamp":1767675600,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.01: Completion of Acquisition or Disposition of Assets;\nItem 2.03: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant;\nItem 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0}],"pageSize":20,"totalPage":11,"pageCount":1,"totalSize":201,"code":"91000000","status":"200"}]}}