Annual report

Period2025-04-01 → 2026-03-31
Filed2026-06-22
StandardJapan GAAP
ConsolidatedNo
Data checks13 of 13 passed
Key figures · 88
MetricValuePeriodScopeSource row
Revenue¥14.9bn2025-04-01 → 2026-03-31StandaloneNet sales
Revenue¥14.7bn2024-04-01 → 2025-03-31StandaloneNet sales
Revenue¥13.8bn2023-04-01 → 2024-03-31vStandaloneNet sales (5-year summary)
Revenue¥14.2bn2022-04-01 → 2023-03-31vStandaloneNet sales (5-year summary)
Revenue¥12.9bn2021-04-01 → 2022-03-31vStandaloneNet sales (5-year summary)
Operating income¥1.3bn2025-04-01 → 2026-03-31StandaloneOperating income
Operating income¥1.5bn2024-04-01 → 2025-03-31StandaloneOperating income
Ordinary income¥1.4bn2025-04-01 → 2026-03-31StandaloneOrdinary income
Ordinary income¥1.5bn2024-04-01 → 2025-03-31StandaloneOrdinary income
Ordinary income¥1.2bn2023-04-01 → 2024-03-31vStandaloneOrdinary income loss (5-year summary)
Ordinary income¥1.3bn2022-04-01 → 2023-03-31vStandaloneOrdinary income loss (5-year summary)
Ordinary income¥1.1bn2021-04-01 → 2022-03-31vStandaloneOrdinary income loss (5-year summary)
Profit before tax¥1.6bn2025-04-01 → 2026-03-31StandaloneIncome before income taxes
Profit before tax¥1.5bn2024-04-01 → 2025-03-31StandaloneIncome before income taxes
Net income¥1.2bn2025-04-01 → 2026-03-31StandaloneProfit loss
Net income¥1.0bn2024-04-01 → 2025-03-31StandaloneProfit loss
Net income¥835m2023-04-01 → 2024-03-31vStandaloneNet income loss (5-year summary)
Net income¥899m2022-04-01 → 2023-03-31vStandaloneNet income loss (5-year summary)
Net income¥764m2021-04-01 → 2022-03-31vStandaloneNet income loss (5-year summary)
Total assets¥12.2bnat 2026-03-31StandaloneAssets
Total assets¥12.1bnat 2025-03-31StandaloneAssets
Total assets¥11.3bnat 2024-03-31vStandaloneTotal assets (5-year summary)
Total assets¥11.4bnat 2023-03-31vStandaloneTotal assets (5-year summary)
Total assets¥10.9bnat 2022-03-31vStandaloneTotal assets (5-year summary)
Total liabilities¥2.8bnat 2026-03-31StandaloneLiabilities
Total liabilities¥3.4bnat 2025-03-31StandaloneLiabilities
Net assets / equity¥9.4bnat 2026-03-31StandaloneNet assets
Net assets / equity¥8.7bnat 2025-03-31StandaloneNet assets
Net assets / equity¥8.3bnat 2024-03-31vStandaloneNet assets
Net assets / equity¥8.0bnat 2023-03-31vStandaloneNet assets (5-year summary)
Net assets / equity¥7.6bnat 2022-03-31vStandaloneNet assets (5-year summary)
Cash and deposits¥1.3bnat 2026-03-31StandaloneCash and deposits
Cash and deposits¥1.3bnat 2025-03-31StandaloneCash and deposits
Cash & equivalents¥4.8bnat 2026-03-31StandaloneCash and cash equivalents
Cash & equivalents¥3.9bnat 2025-03-31StandaloneCash and cash equivalents
Cash & equivalents¥3.9bnat 2024-03-31vStandaloneCash and cash equivalents
Cash & equivalents¥3.4bnat 2023-03-31vStandaloneCash and cash equivalents (5-year summary)
Cash & equivalents¥3.3bnat 2022-03-31vStandaloneCash and cash equivalents (5-year summary)
Operating cash flow¥1.7bn2025-04-01 → 2026-03-31StandaloneNet cash provided by used in operating activities
Operating cash flow¥692m2024-04-01 → 2025-03-31StandaloneNet cash provided by used in operating activities
Operating cash flow¥1.2bn2023-04-01 → 2024-03-31vStandaloneNet cash provided by used in operating activities (5-year summary)
Operating cash flow¥823m2022-04-01 → 2023-03-31vStandaloneNet cash provided by used in operating activities (5-year summary)
Operating cash flow¥1.3bn2021-04-01 → 2022-03-31vStandaloneNet cash provided by used in operating activities (5-year summary)
Investing cash flow¥25m2025-04-01 → 2026-03-31StandaloneNet cash provided by used in investment activities
Investing cash flow−¥114m2024-04-01 → 2025-03-31StandaloneNet cash provided by used in investment activities
Investing cash flow−¥89m2023-04-01 → 2024-03-31vStandaloneNet cash provided by used in investing activities (5-year summary)
Investing cash flow−¥185m2022-04-01 → 2023-03-31vStandaloneNet cash provided by used in investing activities (5-year summary)
Investing cash flow−¥224m2021-04-01 → 2022-03-31vStandaloneNet cash provided by used in investing activities (5-year summary)
Financing cash flow−¥792m2025-04-01 → 2026-03-31StandaloneNet cash provided by used in financing activities
Financing cash flow−¥591m2024-04-01 → 2025-03-31StandaloneNet cash provided by used in financing activities
Financing cash flow−¥628m2023-04-01 → 2024-03-31vStandaloneNet cash provided by used in financing activities (5-year summary)
Financing cash flow−¥544m2022-04-01 → 2023-03-31vStandaloneNet cash provided by used in financing activities (5-year summary)
Financing cash flow−¥801m2021-04-01 → 2022-03-31vStandaloneNet cash provided by used in financing activities (5-year summary)
EPS (basic)¥482.512025-04-01 → 2026-03-31StandaloneBasic earnings loss per share (5-year summary)
EPS (basic)¥425.542024-04-01 → 2025-03-31StandaloneBasic earnings loss per share (5-year summary)
EPS (basic)¥339.092023-04-01 → 2024-03-31vStandaloneBasic earnings loss per share (5-year summary)
EPS (basic)¥3652022-04-01 → 2023-03-31vStandaloneBasic earnings loss per share (5-year summary)
EPS (basic)¥312.192021-04-01 → 2022-03-31vStandaloneBasic earnings loss per share (5-year summary)
Dividend per share¥3352025-04-01 → 2026-03-31StandaloneDividend paid per share (5-year summary)
Dividend per share¥3002024-04-01 → 2025-03-31StandaloneDividend paid per share (5-year summary)
Dividend per share¥2402023-04-01 → 2024-03-31vStandaloneDividend paid per share (5-year summary)
Dividend per share¥2552022-04-01 → 2023-03-31vStandaloneDividend paid per share (5-year summary)
Dividend per share¥2202021-04-01 → 2022-03-31vStandaloneDividend paid per share (5-year summary)
Net assets per share¥3,819.71at 2026-03-31StandaloneNet assets per share (5-year summary)
Net assets per share¥3,548.53at 2025-03-31StandaloneNet assets per share (5-year summary)
Net assets per share¥3,371.65at 2024-03-31vStandaloneNet assets per share (5-year summary)
Net assets per share¥3,252.3at 2023-03-31vStandaloneNet assets per share (5-year summary)
Net assets per share¥3,101.54at 2022-03-31vStandaloneNet assets per share (5-year summary)
Equity ratio77.0%at 2026-03-31StandaloneEquity to asset ratio (5-year summary)
Equity ratio71.9%at 2025-03-31StandaloneEquity to asset ratio (5-year summary)
Equity ratio73.3%at 2024-03-31vStandaloneEquity to asset ratio (5-year summary)
Equity ratio70.1%at 2023-03-31vStandaloneEquity to asset ratio (5-year summary)
Equity ratio70.4%at 2022-03-31vStandaloneEquity to asset ratio (5-year summary)
ROE13.1%2025-04-01 → 2026-03-31StandaloneRate of return on equity (5-year summary)
ROE12.3%2024-04-01 → 2025-03-31StandaloneRate of return on equity (5-year summary)
ROE10.2%2023-04-01 → 2024-03-31vStandaloneRate of return on equity (5-year summary)
ROE11.5%2022-04-01 → 2023-03-31vStandaloneRate of return on equity (5-year summary)
ROE10.1%2021-04-01 → 2022-03-31vStandaloneRate of return on equity (5-year summary)
Shares issued2,602,500at 2026-03-31StandaloneTotal number of issued shares (5-year summary)
Shares issued2,602,500at 2025-03-31StandaloneTotal number of issued shares (5-year summary)
Shares issued2,602,500at 2024-03-31vStandaloneTotal number of issued shares (5-year summary)
Shares issued2,602,500at 2023-03-31vStandaloneTotal number of issued shares (5-year summary)
Shares issued2,602,500at 2022-03-31vStandaloneTotal number of issued shares (5-year summary)
Employees282at 2026-03-31StandaloneNumber of employees
Employees274at 2025-03-31StandaloneNumber of employees
Employees265at 2024-03-31vStandaloneNumber of employees
Employees268at 2023-03-31vStandaloneNumber of employees
Employees268at 2022-03-31vStandaloneNumber of employees

Periods use the dates stated in the filing. d = earlier-year period dated by calendar; v = that date confirmed by the company's own earlier filing.

Segments · 36
SegmentItemPeriodValue
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentsrevenue2025-04-01 → 2026-03-31¥2.0bn
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentsrevenue external2025-04-01 → 2026-03-31¥2.0bn
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentssegment profit2025-04-01 → 2026-03-31¥348m
Groundreportable segmentrevenue2025-04-01 → 2026-03-31¥1.0bn
Groundreportable segmentrevenue external2025-04-01 → 2026-03-31¥1.0bn
Groundreportable segmentsegment profit2025-04-01 → 2026-03-31¥465m
Portreportable segmentrevenue2025-04-01 → 2026-03-31¥8.8bn
Portreportable segmentrevenue external2025-04-01 → 2026-03-31¥8.8bn
Portreportable segmentsegment profit2025-04-01 → 2026-03-31¥2.2bn
Undergroundreportable segmentrevenue2025-04-01 → 2026-03-31¥3.1bn
Undergroundreportable segmentrevenue external2025-04-01 → 2026-03-31¥3.1bn
Undergroundreportable segmentsegment profit2025-04-01 → 2026-03-31¥937m
—segment totalrevenue2025-04-01 → 2026-03-31¥12.9bn
—segment totalrevenue external2025-04-01 → 2026-03-31¥12.9bn
—segment totalsegment profit2025-04-01 → 2026-03-31¥3.6bn
Total Of Reportable Segments And Otherssegment totalrevenue2025-04-01 → 2026-03-31¥14.9bn
Total Of Reportable Segments And Otherssegment totalrevenue external2025-04-01 → 2026-03-31¥14.9bn
Total Of Reportable Segments And Otherssegment totalsegment profit2025-04-01 → 2026-03-31¥3.9bn
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentsrevenue2024-04-01 → 2025-03-31¥1.5bn
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentsrevenue external2024-04-01 → 2025-03-31¥1.5bn
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentssegment profit2024-04-01 → 2025-03-31¥211m
Groundreportable segmentrevenue2024-04-01 → 2025-03-31¥1.1bn
Groundreportable segmentrevenue external2024-04-01 → 2025-03-31¥1.1bn
Groundreportable segmentsegment profit2024-04-01 → 2025-03-31¥460m
Portreportable segmentrevenue2024-04-01 → 2025-03-31¥9.3bn
Portreportable segmentrevenue external2024-04-01 → 2025-03-31¥9.3bn
Portreportable segmentsegment profit2024-04-01 → 2025-03-31¥2.3bn
Undergroundreportable segmentrevenue2024-04-01 → 2025-03-31¥2.9bn
Undergroundreportable segmentrevenue external2024-04-01 → 2025-03-31¥2.9bn
Undergroundreportable segmentsegment profit2024-04-01 → 2025-03-31¥766m
—segment totalrevenue2024-04-01 → 2025-03-31¥13.2bn
—segment totalrevenue external2024-04-01 → 2025-03-31¥13.2bn
—segment totalsegment profit2024-04-01 → 2025-03-31¥3.6bn
Total Of Reportable Segments And Otherssegment totalrevenue2024-04-01 → 2025-03-31¥14.7bn
Total Of Reportable Segments And Otherssegment totalrevenue external2024-04-01 → 2025-03-31¥14.7bn
Total Of Reportable Segments And Otherssegment totalsegment profit2024-04-01 → 2025-03-31¥3.8bn

Segment names come from EDINET member IDs; not yet mapped to a common taxonomy.

All source rows · 1,256
ItemContextValueUnit
AssetsCurrentYearInstant_NonConsolidatedMember_jpcrp030000-asr_E00260-000UndergroundReportableSegmentsMember-JPY
AssetsCurrentYearInstant_NonConsolidatedMember_jpcrp030000-asr_E00260-000GroundReportableSegmentsMember-JPY
AssetsCurrentYearInstant_NonConsolidatedMember_ReportableSegmentsMember-JPY
AssetsCurrentYearInstant_NonConsolidatedMember_OperatingSegmentsNotIncludedInReportableSegmentsAndOtherRevenueGeneratingBusinessActivitiesMember-JPY
AssetsCurrentYearInstant_NonConsolidatedMember_TotalOfReportableSegmentsAndOthersMember-JPY
Document title cover pageFilingDateInstant
Original text (Japanese)有価証券報告書
Clause of stipulation cover pageFilingDateInstant
Original text (Japanese)金融商品取引法第24条第1項
Place of filing cover pageFilingDateInstant
Original text (Japanese)関東財務局長
Filing date cover pageFilingDateInstant2026-06-22
Fiscal year cover pageFilingDateInstant
Original text (Japanese)第83期(自 2025年4月1日 至 2026年3月31日)
Company name cover pageFilingDateInstant
Original text (Japanese)株式会社ナカボーテック
Company name in english cover pageFilingDateInstantNakabohtec Corrosion Protecting Co.,Ltd.
Title and name of representative cover pageFilingDateInstant
Original text (Japanese)代表取締役社長  宮地 誠
Address of registered headquarter cover pageFilingDateInstant
Original text (Japanese)東京都中央区新川一丁目17番21号
Telephone number address of registered headquarter cover pageFilingDateInstant03(5541)5801
Name of contact person address of registered headquarter cover pageFilingDateInstant
Original text (Japanese)執行役員管理本部経理部長  相澤 靖裕
Nearest place of contact cover pageFilingDateInstant
Original text (Japanese)東京都中央区新川一丁目17番21号
Telephone number nearest place of contact cover pageFilingDateInstant03(5541)5801
Name of contact person nearest place of contact cover pageFilingDateInstant
Original text (Japanese)執行役員管理本部経理部長  相澤 靖裕
Place for public inspection cover page (text)FilingDateInstantText · Plus
Edinet codeFilingDateInstantE00260
Fund codeFilingDateInstant-
Security codeFilingDateInstant17870
Filer name in japaneseFilingDateInstant
Original text (Japanese)株式会社ナカボーテック
Filer name in englishFilingDateInstantNakabohtec Corrosion Protecting Co.,Ltd.
Fund name in japaneseFilingDateInstant-
Fund name in englishFilingDateInstant-
Cabinet office ordinanceFilingDateInstant
Original text (Japanese)企業内容等の開示に関する内閣府令
Document typeFilingDateInstant
Original text (Japanese)第三号様式
Accounting standardsFilingDateInstantJapan GAAP
Whether consolidated financial statements are preparedFilingDateInstantfalse
Industry code when consolidated financial statements are prepared in accordance with industry specific regulationsFilingDateInstant-
Industry code when financial statements are prepared in accordance with industry specific regulationsFilingDateInstantcns
Current fiscal year start dateFilingDateInstant2025-04-01
Current period end dateFilingDateInstant2026-03-31
Type of current periodFilingDateInstantFY
Current fiscal year end dateFilingDateInstant2026-03-31
Previous fiscal year start dateFilingDateInstant2024-04-01
Comparative period end dateFilingDateInstant2025-03-31
Previous fiscal year end dateFilingDateInstant2025-03-31
Next fiscal year start dateFilingDateInstant-
End date of quarterly or semi annual period of next fiscal yearFilingDateInstant-
Amendment flagFilingDateInstantfalse
Identification of document subject to amendmentFilingDateInstant-
Report amendment flagFilingDateInstantfalse
Xbrl amendment flagFilingDateInstantfalse
Business results of reporting company (text)FilingDateInstantText · Plus
Company history (text)FilingDateInstantText · Plus
Description of business (text)FilingDateInstantText · Plus
Overview of affiliated entities (text)FilingDateInstantText · Plus

Every row of the EDINET CSV. Item names are the XBRL element names; filed text is kept in its original Japanese. Filed text is available on Plus and Pro.

Data checks · 13 of 13 passed
balance sheet identitynon_consolidated 2025-03-31pass
balance sheet identitynon_consolidated 2026-03-31pass
dei present pass
period resolution pass
statement vs summary · net assetsnon_consolidated 2024-03-31pass
statement vs summary · net assetsnon_consolidated 2025-03-31pass
statement vs summary · net assetsnon_consolidated 2026-03-31pass
statement vs summary · operating cash flownon_consolidated 2024-04-01/2025-03-31pass
statement vs summary · operating cash flownon_consolidated 2025-04-01/2026-03-31pass
statement vs summary · revenuenon_consolidated 2024-04-01/2025-03-31pass
statement vs summary · revenuenon_consolidated 2025-04-01/2026-03-31pass
statement vs summary · total assetsnon_consolidated 2025-03-31pass
statement vs summary · total assetsnon_consolidated 2026-03-31pass