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
Name of securities details of specified investment equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row4Member
Original text (Japanese)五洋建設㈱
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of specified investment shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row4MemberText · Plus
Whether issuer of aforementioned shares holds reporting companys shares details of specified investment shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row4Member
Original text (Japanese)無
Name of securities details of specified investment equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row5Member
Original text (Japanese)コスモエネルギーホールディングス㈱ (注)4
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of specified investment shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row5MemberText · Plus
Whether issuer of aforementioned shares holds reporting companys shares details of specified investment shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row5Member
Original text (Japanese)無
Name of securities details of specified investment equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row6Member
Original text (Japanese)住友大阪セメント㈱
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of specified investment shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row6Member-
Whether issuer of aforementioned shares holds reporting companys shares details of specified investment shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row6Member
Original text (Japanese)無
Footnotes specified investment shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row1MemberText · Plus
Footnotes specified investment shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row2MemberText · Plus
Footnotes specified investment shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row3MemberText · Plus
Footnotes specified investment shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row4MemberText · Plus
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row1Member
Original text (Japanese)㈱IHI (注)5
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row1Member
Original text (Japanese)退職給付信託契約による議決権行使指図権限
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row1Member
Original text (Japanese)無
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row2Member
Original text (Japanese)大成建設㈱
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row2Member
Original text (Japanese)退職給付信託契約による議決権行使指図権限
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row2Member
Original text (Japanese)無
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row3Member
Original text (Japanese)㈱三井住友フィナンシャルグループ
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row3Member
Original text (Japanese)退職給付信託契約による議決権行使指図権限
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row3Member
Original text (Japanese)無(注)4
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row4Member
Original text (Japanese)東亜建設工業㈱
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row4Member
Original text (Japanese)退職給付信託契約による議決権行使指図権限
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row4Member
Original text (Japanese)無
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row5Member
Original text (Japanese)コスモエネルギーホールディングス㈱ (注)6
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row5Member
Original text (Japanese)退職給付信託契約による議決権行使指図権限
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row5Member
Original text (Japanese)無
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row6Member
Original text (Japanese)東京瓦斯㈱
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row6Member
Original text (Japanese)退職給付信託契約による議決権行使指図権限
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row6Member
Original text (Japanese)無
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row7Member
Original text (Japanese)三井住友トラストグループ㈱
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row7Member
Original text (Japanese)退職給付信託契約による議決権行使指図権限
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row7Member
Original text (Japanese)無 (注)4
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row8Member
Original text (Japanese)西部ガスホールディングス㈱
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row8Member
Original text (Japanese)退職給付信託契約による議決権行使指図権限
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row8Member
Original text (Japanese)無
Footnotes deemed holdings of shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row1MemberText · Plus
Footnotes deemed holdings of shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row2MemberText · Plus
Footnotes deemed holdings of shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row3MemberText · Plus
Footnotes deemed holdings of shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row4MemberText · Plus
Footnotes deemed holdings of shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row5MemberText · Plus
Footnotes deemed holdings of shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row6MemberText · Plus
Basic policy on human resources strategy employees etc (text)FilingDateInstantText · Plus
Information about employees (text)FilingDateInstantText · Plus
Description of fact that financial statements have been prepared in accordance with special ordinance or regulations for industry in appended list financial informationCurrentYearDurationText · Plus
Note on independent audit financial informationCurrentYearDurationText · Plus
Description of fact that consolidated financial statements have not been prepared financial informationCurrentYearDuration
Original text (Japanese)当社は子会社はありませんので、連結財務諸表を作成しておりません。
Remarkable efforts to ensure fair presentation of consolidated financial statements etc financial informationCurrentYearDurationText · Plus
Balance sheet (text)CurrentYearDurationText · 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