【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