# 【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】 | 2019年６月28日
【事業年度】 | 第１期（自　2018年４月１日　至　2019年３月31日）
【会社名】 | ITbookホールディングス株式会社
【英訳名】 | ITbook Holdings Co.,Ltd.
【代表者の役職氏名】 | 代表取締役会長兼ＣＥＯ　　恩田　饒
【本店の所在の場所】 | 東京都中央区日本橋茅場町二丁目８番４号
【電話番号】 | 03-6264-8200（代表）
【事務連絡者氏名】 | 執行役員管理本部長　　神谷　修司
【最寄りの連絡場所】 | 東京都中央区日本橋茅場町二丁目８番４号
【電話番号】 | 03-6264-8200（代表）
【事務連絡者氏名】 | 執行役員管理本部長　　神谷　修司
【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茅場町２番１号）

E34165 14470 ITbookホールディングス株式会社 ITbook Holdings Co.,Ltd. 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 2018-04-01 2019-03-31 FY 2019-03-31 2017-04-01 2018-03-31 2018-03-31 1 false false false E34165-000 2018-04-01 2019-03-31 jppfs_cor:NonControllingInterestsMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:SubscriptionRightsToSharesMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:SubscriptionRightsToSharesMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:RetainedEarningsBroughtForwardMember jppfs_cor:NonConsolidatedMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:LegalCapitalSurplusMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E34165-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:SubscriptionRightsToSharesMember E34165-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E34165-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E34165-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E34165-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsBroughtForwardMember E34165-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:ShareholdersEquityMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:TreasuryStockMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:RetainedEarningsMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:CapitalSurplusMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:CapitalStockMember E34165-000 2019-03-31 jppfs_cor:NonControllingInterestsMember E34165-000 2019-03-31 jppfs_cor:SubscriptionRightsToSharesMember E34165-000 2019-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E34165-000 2019-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E34165-000 2019-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E34165-000 2019-03-31 jppfs_cor:ShareholdersEquityMember E34165-000 2019-03-31 jppfs_cor:TreasuryStockMember E34165-000 2019-03-31 jppfs_cor:RetainedEarningsMember E34165-000 2019-03-31 jppfs_cor:CapitalSurplusMember E34165-000 2019-03-31 jppfs_cor:CapitalStockMember E34165-000 2018-03-31 jppfs_cor:NonControllingInterestsMember E34165-000 2018-03-31 jppfs_cor:SubscriptionRightsToSharesMember E34165-000 2018-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E34165-000 2018-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E34165-000 2018-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E34165-000 2018-03-31 jppfs_cor:ShareholdersEquityMember E34165-000 2018-03-31 jppfs_cor:TreasuryStockMember E34165-000 2018-03-31 jppfs_cor:RetainedEarningsMember E34165-000 2018-03-31 jppfs_cor:CapitalSurplusMember E34165-000 2018-03-31 jppfs_cor:CapitalStockMember E34165-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:LegalCapitalSurplusMember E34165-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E34165-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:SubscriptionRightsToSharesMember E34165-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E34165-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E34165-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E34165-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsBroughtForwardMember E34165-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E34165-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:LegalCapitalSurplusMember E34165-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E34165-000 2019-06-28 jpcrp030000-asr_E34165-000:KenjiOkadaMember E34165-000 2019-06-28 jpcrp030000-asr_E34165-000:FusaoMitaniMember E34165-000 2019-06-28 jpcrp030000-asr_E34165-000:TakeuchiYoichiMember E34165-000 2019-06-28 jpcrp030000-asr_E34165-000:TakashiSasakiMember E34165-000 2019-06-28 jpcrp030000-asr_E34165-000:ToshimoriMaeMember E34165-000 2019-06-28 jpcrp030000-asr_E34165-000:YutakaOndaMember E34165-000 2019-06-28 jpcrp_cor:Row5Member E34165-000 2019-06-28 jpcrp_cor:Row4Member E34165-000 2019-06-28 jpcrp_cor:Row3Member E34165-000 2019-06-28 jpcrp_cor:Row2Member E34165-000 2019-06-28 jpcrp_cor:Row1Member E34165-000 2019-03-31 jpcrp_cor:SharesWithRestrictedVotingRightsOtherMember E34165-000 2019-03-31 jpcrp_cor:SharesWithFullVotingRightsTreasurySharesEtcMember E34165-000 2019-03-31 jpcrp_cor:SharesWithFullVotingRightsOtherMember E34165-000 2019-03-31 jpcrp_cor:OrdinarySharesSharesWithFullVotingRightsOtherMember E34165-000 2019-03-31 jpcrp_cor:SharesLessThanOneUnitMember E34165-000 2019-03-31 jpcrp_cor:OrdinarySharesSharesLessThanOneUnitMember E34165-000 2019-03-31 jpcrp_cor:CorporateSharedMember E34165-000 2019-03-31 jppfs_cor:NonConsolidatedMember jpcrp_cor:CorporateSharedMember E34165-000 2019-06-28 jpcrp_cor:OrdinaryShareMember E34165-000 2019-03-31 jpcrp_cor:OrdinaryShareMember E34165-000 2019-03-31 jpcrp_cor:SharesWithNoVotingRightsMember E34165-000 2019-03-31 jpcrp_cor:SharesWithRestrictedVotingRightsTreasurySharesEtcMember E34165-000 2018-04-01 2019-03-31 jpcrp030000-asr_E34165-000:OverseasBusinessReportableSegmentsMember E34165-000 2018-04-01 2019-03-31 jpcrp030000-asr_E34165-000:InformationAndCommunicationTechnologyBusinessReportableSegmentsMember E34165-000 2018-04-01 2019-03-31 jpcrp030000-asr_E34165-000:WarrantyAndInspectionBusinessReportableSegmentsMember E34165-000 2018-04-01 2019-03-31 jpcrp030000-asr_E34165-000:GroundInvestigationAndGroundImprovementBusinessReportableSegmentsMember E34165-000 2018-04-01 2019-03-31 jpcrp030000-asr_E34165-000:ManpowerDispatchingBusinessReportableSegmentsMember E34165-000 2018-04-01 2019-03-31 jpcrp030000-asr_E34165-000:SystemDevelopmentBusinessReportableSegmentsMember E34165-000 2018-04-01 2019-03-31 jpcrp030000-asr_E34165-000:ConsultationBusinessReportableSegmentsMember E34165-000 2018-04-01 2019-03-31 jpcrp_cor:TotalOfReportableSegmentsAndOthersMember E34165-000 2019-03-31 jpcrp_cor:No10MajorShareholdersMember E34165-000 2019-03-31 jpcrp_cor:No9MajorShareholdersMember E34165-000 2019-03-31 jpcrp_cor:No8MajorShareholdersMember E34165-000 2019-03-31 jpcrp_cor:No7MajorShareholdersMember E34165-000 2019-03-31 jpcrp_cor:No6MajorShareholdersMember E34165-000 2019-03-31 jpcrp_cor:No5MajorShareholdersMember E34165-000 2019-03-31 jpcrp_cor:No4MajorShareholdersMember E34165-000 2019-03-31 jpcrp_cor:No3MajorShareholdersMember E34165-000 2019-03-31 jpcrp_cor:No2MajorShareholdersMember E34165-000 2019-03-31 jpcrp_cor:No1MajorShareholdersMember E34165-000 2019-06-28 jpcrp_cor:Row6Member E34165-000 2019-03-31 jpcrp030000-asr_E34165-000:OverseasBusinessReportableSegmentsMember E34165-000 2019-03-31 jpcrp030000-asr_E34165-000:InformationAndCommunicationTechnologyBusinessReportableSegmentsMember E34165-000 2019-03-31 jpcrp030000-asr_E34165-000:WarrantyAndInspectionBusinessReportableSegmentsMember E34165-000 2019-03-31 jpcrp030000-asr_E34165-000:GroundInvestigationAndGroundImprovementBusinessReportableSegmentsMember E34165-000 2019-03-31 jpcrp030000-asr_E34165-000:ManpowerDispatchingBusinessReportableSegmentsMember E34165-000 2019-03-31 jpcrp030000-asr_E34165-000:SystemDevelopmentBusinessReportableSegmentsMember E34165-000 2019-03-31 jpcrp030000-asr_E34165-000:ConsultationBusinessReportableSegmentsMember E34165-000 2018-04-01 2019-03-31 jpcrp_cor:OutsideDirectorsAndOtherOfficersMember E34165-000 2018-04-01 2019-03-31 jpcrp_cor:CorporateAuditorsExcludingOutsideCorporateAuditorsMember E34165-000 2018-04-01 2019-03-31 jpcrp_cor:DirectorsExcludingOutsideDirectorsMember E34165-000 2019-03-31 jppfs_cor:NonConsolidatedMember E34165-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember E34165-000 2018-03-31 jppfs_cor:NonConsolidatedMember E34165-000 2019-06-28 E34165-000 2019-03-31 E34165-000 2018-04-01 2019-03-31 E34165-000 2018-03-31 E34165-000 2019-03-31 jpcrp_cor:Row1Member E34165-000 2019-03-31 jpcrp_cor:UnallocatedAmountsAndEliminationMember E34165-000 2018-04-01 2019-03-31 jpcrp_cor:UnallocatedAmountsAndEliminationMember iso4217:JPY xbrli:shares xbrli:shares xbrli:pure iso4217:JPY