Half-year report · HY

Period2025-10-01 → 2026-03-31
Filed2026-05-15
StandardJapan GAAP
ConsolidatedNo
Data checks10 of 10 passed
Key figures · 63
MetricValuePeriodScopeSource row
Revenue¥12.8bn2025-10-01 → 2026-03-31StandaloneNet sales (5-year summary)
Revenue¥24.2bn2024-10-01 → 2025-09-30StandaloneNet sales (5-year summary)
Revenue¥11.8bn2024-10-01 → 2025-03-31StandaloneNet sales (5-year summary)
Operating income¥487m2025-10-01 → 2026-03-31StandaloneOperating income
Operating income¥958m2024-10-01 → 2025-03-31StandaloneOperating income
Ordinary income¥584m2025-10-01 → 2026-03-31StandaloneOrdinary income
Ordinary income¥584m2025-10-01 → 2026-03-31StandaloneOrdinary income loss (5-year summary)
Ordinary income¥2.1bn2024-10-01 → 2025-09-30StandaloneOrdinary income loss (5-year summary)
Ordinary income¥1.1bn2024-10-01 → 2025-03-31StandaloneOrdinary income
Ordinary income¥1.1bn2024-10-01 → 2025-03-31StandaloneOrdinary income loss (5-year summary)
Profit before tax¥584m2025-10-01 → 2026-03-31StandaloneIncome before income taxes
Profit before tax¥1.0bn2024-10-01 → 2025-03-31StandaloneIncome before income taxes
Net income¥402m2025-10-01 → 2026-03-31StandaloneProfit loss
Net income¥401m2025-10-01 → 2026-03-31StandaloneNet income loss (5-year summary)
Net income¥1.4bn2024-10-01 → 2025-09-30StandaloneNet income loss (5-year summary)
Net income¥722m2024-10-01 → 2025-03-31StandaloneProfit loss
Net income¥721m2024-10-01 → 2025-03-31StandaloneNet income loss (5-year summary)
Total assets¥36.0bnat 2026-03-31StandaloneAssets
Total assets¥36.0bnat 2026-03-31StandaloneTotal assets (5-year summary)
Total assets¥35.0bnat 2025-09-30StandaloneAssets
Total assets¥35.0bnat 2025-09-30StandaloneTotal assets (5-year summary)
Total assets¥33.4bnat 2025-03-31StandaloneTotal assets (5-year summary)
Total liabilities¥6.5bnat 2026-03-31StandaloneLiabilities
Total liabilities¥6.0bnat 2025-09-30StandaloneLiabilities
Net assets / equity¥29.5bnat 2026-03-31StandaloneNet assets
Net assets / equity¥29.5bnat 2026-03-31StandaloneNet assets (5-year summary)
Net assets / equity¥29.0bnat 2025-09-30StandaloneNet assets
Net assets / equity¥29.0bnat 2025-09-30StandaloneNet assets (5-year summary)
Net assets / equity¥27.8bnat 2025-03-31StandaloneNet assets (5-year summary)
Cash and deposits¥2.9bnat 2026-03-31StandaloneCash and deposits
Cash and deposits¥3.2bnat 2025-09-30StandaloneCash and deposits
Cash & equivalents¥2.9bnat 2026-03-31StandaloneCash and cash equivalents
Cash & equivalents¥2.9bnat 2026-03-31StandaloneCash and cash equivalents (5-year summary)
Cash & equivalents¥3.2bnat 2025-09-30StandaloneCash and cash equivalents
Cash & equivalents¥3.2bnat 2025-09-30StandaloneCash and cash equivalents (5-year summary)
Cash & equivalents¥3.2bnat 2025-03-31StandaloneCash and cash equivalents
Cash & equivalents¥3.2bnat 2025-03-31StandaloneCash and cash equivalents (5-year summary)
Cash & equivalents¥1.3bnat 2024-09-30vStandaloneCash and cash equivalents
Operating cash flow¥528m2025-10-01 → 2026-03-31StandaloneNet cash provided by used in operating activities
Operating cash flow¥527m2025-10-01 → 2026-03-31StandaloneNet cash provided by used in operating activities (5-year summary)
Operating cash flow¥3.2bn2024-10-01 → 2025-09-30StandaloneNet cash provided by used in operating activities (5-year summary)
Operating cash flow¥3.1bn2024-10-01 → 2025-03-31StandaloneNet cash provided by used in operating activities
Operating cash flow¥3.1bn2024-10-01 → 2025-03-31StandaloneNet cash provided by used in operating activities (5-year summary)
Investing cash flow−¥320m2025-10-01 → 2026-03-31StandaloneNet cash provided by used in investment activities
Investing cash flow−¥319m2025-10-01 → 2026-03-31StandaloneNet cash provided by used in investing activities (5-year summary)
Investing cash flow−¥206m2024-10-01 → 2025-09-30StandaloneNet cash provided by used in investing activities (5-year summary)
Investing cash flow−¥59m2024-10-01 → 2025-03-31StandaloneNet cash provided by used in investment activities
Investing cash flow−¥59m2024-10-01 → 2025-03-31StandaloneNet cash provided by used in investing activities (5-year summary)
Financing cash flow−¥436m2025-10-01 → 2026-03-31StandaloneNet cash provided by used in financing activities
Financing cash flow−¥436m2025-10-01 → 2026-03-31StandaloneNet cash provided by used in financing activities (5-year summary)
Financing cash flow−¥1.1bn2024-10-01 → 2025-09-30StandaloneNet cash provided by used in financing activities (5-year summary)
Financing cash flow−¥1.1bn2024-10-01 → 2025-03-31StandaloneNet cash provided by used in financing activities
Financing cash flow−¥1.1bn2024-10-01 → 2025-03-31StandaloneNet cash provided by used in financing activities (5-year summary)
EPS (basic)¥146.212025-10-01 → 2026-03-31StandaloneBasic earnings loss per share (5-year summary)
EPS (basic)¥521.052024-10-01 → 2025-09-30StandaloneBasic earnings loss per share (5-year summary)
EPS (basic)¥254.682024-10-01 → 2025-03-31StandaloneBasic earnings loss per share (5-year summary)
Dividend per share¥1602024-10-01 → 2025-09-30StandaloneDividend paid per share (5-year summary)
Equity ratio81.9%at 2026-03-31StandaloneEquity to asset ratio (5-year summary)
Equity ratio82.8%at 2025-09-30StandaloneEquity to asset ratio (5-year summary)
Equity ratio83.1%at 2025-03-31StandaloneEquity to asset ratio (5-year summary)
Shares issued3,000,000at 2026-03-31StandaloneTotal number of issued shares (5-year summary)
Shares issued3,000,000at 2025-09-30StandaloneTotal number of issued shares (5-year summary)
Shares issued3,000,000at 2025-03-31StandaloneTotal number of issued shares (5-year summary)

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.

All source rows · 435
ItemContextValueUnit
Name major shareholdersInterimInstant_No9MajorShareholdersMember
Original text (Japanese)INTERACTIVE BROKERS LLC(常任代理人 インタラクティブ・ブローカーズ証券株式会社)
Address major shareholdersInterimInstant_No9MajorShareholdersMemberText · Plus
Name major shareholdersInterimInstant_No10MajorShareholdersMember
Original text (Japanese)川岸工業従業員持株会
Address major shareholdersInterimInstant_No10MajorShareholdersMember
Original text (Japanese)東京都港区東新橋1丁目2-13
Issued shares voting rights (text)FilingDateInstantText · Plus
Description issued shares voting rightsInterimInstant_SharesWithNoVotingRightsMember-
Description issued shares voting rightsInterimInstant_SharesWithRestrictedVotingRightsTreasurySharesEtcMember-
Description issued shares voting rightsInterimInstant_SharesWithRestrictedVotingRightsOtherMember-
Description issued shares voting rightsInterimInstant_OrdinarySharesTreasurySharesSharesWithFullVotingRightsTreasurySharesEtcMember-
Description issued shares voting rightsInterimInstant_OrdinarySharesSharesWithFullVotingRightsOtherMember-
Description issued shares voting rightsInterimInstant_OrdinarySharesSharesLessThanOneUnitMember-
Treasury shares etc (text)FilingDateInstantText · Plus
Name of shareholder treasury shares etcInterimInstant_Row1Member
Original text (Japanese)川岸工業株式会社
Address of shareholder treasury shares etcInterimInstant_Row1Member
Original text (Japanese)東京都港区東新橋1丁目2番13号
Information about officers (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 informationInterimDurationText · Plus
Type1 semi annual financial statements financial informationInterimDurationText · Plus
Note on independent audit financial informationInterimDurationText · Plus
Description of fact that consolidated financial statements have not been prepared financial informationInterimDurationText · Plus
Type1 semi annual balance sheet (text)InterimDurationText · Plus
Type1 semi annual statement of income (text)InterimDurationText · Plus
Type1 semi annual statement of cash flows (text)InterimDurationText · Plus
Notes accounting treatments specific to semi annual financial statements type1 semi annual financial statements (text)InterimDurationText · Plus
Reconciliation of ending balance of cash and cash equivalents with account balances per balance sheet (text)InterimDuration_NonConsolidatedMemberText · Plus
Notes regarding dividend (text)Prior1InterimDuration_NonConsolidatedMemberText · Plus
Notes when there is significant changes in amounts of equity (text)Prior1InterimDuration_NonConsolidatedMemberText · Plus
Notes regarding dividend (text)InterimDuration_NonConsolidatedMemberText · Plus
Notes when there is significant changes in amounts of equity (text)InterimDuration_NonConsolidatedMemberText · Plus
Notes segment information etc type1 semi annual financial statements (text)InterimDurationText · Plus
Description of fact that companys business comprises single segmentInterimDuration_NonConsolidatedMember
Original text (Japanese)当社は、建設業の単一セグメントであるため、記載を省略しております。
Notes revenue recognition semi annual financial statements (text)InterimDurationText · Plus
Notes per share information semi annual financial statements (text)InterimDurationText · Plus
Notes significant events after reporting period semi annual financial statements (text)InterimDurationText · Plus
Other information financial statements etc (text)InterimDurationText · Plus
Information about company which provides guarantee to reporting company (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 · 10 of 10 passed
balance sheet identitynon_consolidated 2025-09-30pass
balance sheet identitynon_consolidated 2026-03-31pass rounding
dei present pass
period resolution pass
statement vs summary · net assetsnon_consolidated 2025-09-30pass rounding
statement vs summary · net assetsnon_consolidated 2026-03-31pass rounding
statement vs summary · operating cash flownon_consolidated 2024-10-01/2025-03-31pass rounding
statement vs summary · operating cash flownon_consolidated 2025-10-01/2026-03-31pass rounding
statement vs summary · total assetsnon_consolidated 2025-09-30pass rounding
statement vs summary · total assetsnon_consolidated 2026-03-31pass rounding