【表紙】 |
【提出書類】 | 有価証券報告書
【根拠条文】 | 金融商品取引法第24条第１項
【提出先】 | 関東財務局長
【提出日】 | 2025年６月26日
【事業年度】 | 第56期(自 2024年４月１日 至 2025年３月31日)
【会社名】 | ジオスター株式会社
【英訳名】 | GEOSTR Corporation
【代表者の役職氏名】 | 代表取締役社長 堀田　穣
【本店の所在の場所】 | 東京都文京区小石川一丁目４番１号
【電話番号】 | ０３(５８４４)１２００(代表)
【事務連絡者氏名】 | 管理本部企画・経理部長　石井　一史
【最寄りの連絡場所】 | 東京都文京区小石川一丁目４番１号
【電話番号】 | ０３(５８４４)１２００(代表)
【事務連絡者氏名】 | 管理本部企画・経理部長　石井　一史
【縦覧に供する場所】 | 株式会社東京証券取引所 (東京都中央区日本橋兜町２番１号) ジオスター株式会社 大阪支店 (大阪府大阪市中央区備後町三丁目２番15号) ジオスター株式会社 名古屋支店 (愛知県名古屋市中区新栄二丁目19番６号)

E01206 52820 ジオスター株式会社 GEOSTR Corporation 企業内容等の開示に関する内閣府令 第三号様式 Japan GAAP true cte cte 2024-04-01 2025-03-31 FY 2025-03-31 2023-04-01 2024-03-31 2024-03-31 1 false false false E01206-000 2025-06-26 E01206-000 2025-06-26 jpcrp030000-asr_E01206-000:HattoriRyouichiMember E01206-000 2025-06-26 jpcrp030000-asr_E01206-000:HottaYutakaMember E01206-000 2025-06-26 jpcrp030000-asr_E01206-000:IkeuchiHiroshiMember E01206-000 2025-06-26 jpcrp030000-asr_E01206-000:KuwayamaSyoujiMember E01206-000 2025-06-26 jpcrp030000-asr_E01206-000:NakanishiKensukeMember E01206-000 2025-06-26 jpcrp030000-asr_E01206-000:OgsawaraKaorukoMember E01206-000 2025-06-26 jpcrp030000-asr_E01206-000:OoishiHitoshiMember E01206-000 2025-06-26 jpcrp030000-asr_E01206-000:SakamoriNaotoMember E01206-000 2025-06-26 jpcrp030000-asr_E01206-000:SakumaYasushiMember E01206-000 2025-06-26 jpcrp030000-asr_E01206-000:TakamatsuYoshinoriMember E01206-000 2025-06-26 jpcrp030000-asr_E01206-000:TokiAtsushiMember E01206-000 2025-06-26 jpcrp_cor:OrdinaryShareMember E01206-000 2025-06-26 jpcrp_cor:Row1Member E01206-000 2025-06-26 jpcrp_cor:Row2Member E01206-000 2025-06-26 jpcrp_cor:Row3Member E01206-000 2025-06-26 jpcrp_cor:Row4Member E01206-000 2025-06-26 jpcrp_cor:Row5Member E01206-000 2025-06-26 jpcrp_cor:Row6Member E01206-000 2025-06-26 jpcrp_cor:Row7Member E01206-000 2024-04-01 2025-03-31 E01206-000 2024-04-01 2025-03-31 jppfs_cor:CapitalStockMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:CapitalSurplusMember E01206-000 2024-04-01 2025-03-31 jpcrp_cor:CorporateAuditorsExcludingOutsideCorporateAuditorsMember E01206-000 2024-04-01 2025-03-31 jpcrp_cor:DirectorsExcludingOutsideDirectorsMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:CapitalStockMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:CapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:GeneralReserveMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:LegalCapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:LegalRetainedEarningsMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:OtherCapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:ReserveForAdvancedDepreciationOfNoncurrentAssetsMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:RetainedEarningsBroughtForwardMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:RetainedEarningsMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:ShareholdersEquityMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:TreasuryStockMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember jppfs_cor:NonConsolidatedMember E01206-000 2024-04-01 2025-03-31 jpcrp_cor:OutsideDirectorsAndOtherOfficersMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:RetainedEarningsMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:ShareholdersEquityMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:TreasuryStockMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01206-000 2024-04-01 2025-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01206-000 2025-03-31 E01206-000 2025-03-31 jppfs_cor:CapitalStockMember E01206-000 2025-03-31 jppfs_cor:CapitalSurplusMember E01206-000 2025-03-31 jpcrp030000-asr_E01206-000:EngineeringReportableSegmentMember E01206-000 2025-03-31 jpcrp_cor:No10MajorShareholdersMember E01206-000 2025-03-31 jpcrp_cor:No1MajorShareholdersMember E01206-000 2025-03-31 jpcrp_cor:No2MajorShareholdersMember E01206-000 2025-03-31 jpcrp_cor:No3MajorShareholdersMember E01206-000 2025-03-31 jpcrp_cor:No4MajorShareholdersMember E01206-000 2025-03-31 jpcrp_cor:No5MajorShareholdersMember E01206-000 2025-03-31 jpcrp_cor:No6MajorShareholdersMember E01206-000 2025-03-31 jpcrp_cor:No7MajorShareholdersMember E01206-000 2025-03-31 jpcrp_cor:No8MajorShareholdersMember E01206-000 2025-03-31 jpcrp_cor:No9MajorShareholdersMember E01206-000 2025-03-31 jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:CapitalStockMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:CapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:GeneralReserveMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:NonConsolidatedMember jpcrp030000-asr_E01206-000:EngineeringReportableSegmentMember E01206-000 2025-03-31 jppfs_cor:LegalCapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:LegalRetainedEarningsMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:OtherCapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:ReserveForAdvancedDepreciationOfNoncurrentAssetsMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:RetainedEarningsBroughtForwardMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:RetainedEarningsMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:ShareholdersEquityMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:TreasuryStockMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember jppfs_cor:NonConsolidatedMember E01206-000 2025-03-31 jpcrp_cor:OrdinaryShareMember E01206-000 2025-03-31 jpcrp_cor:OrdinarySharesSharesLessThanOneUnitMember E01206-000 2025-03-31 jpcrp_cor:OrdinarySharesSharesWithFullVotingRightsOtherMember E01206-000 2025-03-31 jpcrp_cor:OrdinarySharesTreasurySharesSharesWithFullVotingRightsTreasurySharesEtcMember E01206-000 2025-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01206-000 2025-03-31 jppfs_cor:RetainedEarningsMember E01206-000 2025-03-31 jpcrp_cor:Row1Member E01206-000 2025-03-31 jpcrp_cor:Row2Member E01206-000 2025-03-31 jpcrp_cor:Row3Member E01206-000 2025-03-31 jpcrp_cor:Row4Member E01206-000 2025-03-31 jpcrp_cor:Row5Member E01206-000 2025-03-31 jppfs_cor:ShareholdersEquityMember E01206-000 2025-03-31 jpcrp_cor:SharesWithNoVotingRightsMember E01206-000 2025-03-31 jpcrp_cor:SharesWithRestrictedVotingRightsOtherMember E01206-000 2025-03-31 jpcrp_cor:SharesWithRestrictedVotingRightsTreasurySharesEtcMember E01206-000 2025-03-31 jppfs_cor:TreasuryStockMember E01206-000 2025-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01206-000 2025-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01206-000 2023-04-01 2024-03-31 E01206-000 2023-04-01 2024-03-31 jppfs_cor:CapitalStockMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:CapitalSurplusMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:CapitalStockMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:CapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:GeneralReserveMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:LegalCapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:LegalRetainedEarningsMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:OtherCapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:ReserveForAdvancedDepreciationOfNoncurrentAssetsMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:RetainedEarningsBroughtForwardMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:RetainedEarningsMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:ShareholdersEquityMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:TreasuryStockMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember jppfs_cor:NonConsolidatedMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:RetainedEarningsMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:ShareholdersEquityMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:TreasuryStockMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01206-000 2023-04-01 2024-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01206-000 2024-03-31 E01206-000 2024-03-31 jppfs_cor:CapitalStockMember E01206-000 2024-03-31 jppfs_cor:CapitalSurplusMember E01206-000 2024-03-31 jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:CapitalStockMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:CapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:GeneralReserveMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:LegalCapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:LegalRetainedEarningsMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:OtherCapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:ReserveForAdvancedDepreciationOfNoncurrentAssetsMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:RetainedEarningsBroughtForwardMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:RetainedEarningsMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:ShareholdersEquityMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:TreasuryStockMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember jppfs_cor:NonConsolidatedMember E01206-000 2024-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01206-000 2024-03-31 jppfs_cor:RetainedEarningsMember E01206-000 2024-03-31 jpcrp_cor:Row1Member E01206-000 2024-03-31 jpcrp_cor:Row2Member E01206-000 2024-03-31 jpcrp_cor:Row3Member E01206-000 2024-03-31 jpcrp_cor:Row4Member E01206-000 2024-03-31 jpcrp_cor:Row5Member E01206-000 2024-03-31 jppfs_cor:ShareholdersEquityMember E01206-000 2024-03-31 jppfs_cor:TreasuryStockMember E01206-000 2024-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01206-000 2024-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01206-000 2022-04-01 2023-03-31 E01206-000 2022-04-01 2023-03-31 jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 E01206-000 2023-03-31 jppfs_cor:CapitalStockMember E01206-000 2023-03-31 jppfs_cor:CapitalSurplusMember E01206-000 2023-03-31 jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:CapitalStockMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:CapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:GeneralReserveMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:LegalCapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:LegalRetainedEarningsMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:OtherCapitalSurplusMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:ReserveForAdvancedDepreciationOfNoncurrentAssetsMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:RetainedEarningsBroughtForwardMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:RetainedEarningsMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:ShareholdersEquityMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:TreasuryStockMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember jppfs_cor:NonConsolidatedMember E01206-000 2023-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01206-000 2023-03-31 jppfs_cor:RetainedEarningsMember E01206-000 2023-03-31 jppfs_cor:ShareholdersEquityMember E01206-000 2023-03-31 jppfs_cor:TreasuryStockMember E01206-000 2023-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01206-000 2023-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01206-000 2021-04-01 2022-03-31 E01206-000 2021-04-01 2022-03-31 jppfs_cor:NonConsolidatedMember E01206-000 2022-03-31 E01206-000 2022-03-31 jppfs_cor:NonConsolidatedMember E01206-000 2020-04-01 2021-03-31 E01206-000 2020-04-01 2021-03-31 jppfs_cor:NonConsolidatedMember E01206-000 2021-03-31 E01206-000 2021-03-31 jppfs_cor:NonConsolidatedMember iso4217:JPY iso4217:JPY xbrli:shares xbrli:pure xbrli:shares