Tieron / Targeting
Annual report 2026-06-19
Companies › Japanese listed company

五洋建設株式会社 (PENTA-OCEAN CONSTRUCTION CO.,LTD.)

Tokyo Stock Exchange 1893, Construction. Supply-chain directory entry built from public EDINET filings, including relationships the company disclosed in its own annual securities report.

COMPANY NAME (JP)
五洋建設株式会社
TICKER
TSE 1893
EDINET CODE
E00086
CORPORATE NUMBER
1010001000006
INDUSTRY
Construction (建設業)
HEAD OFFICE
文京区後楽二丁目２番８号
DISCLOSED FOOTPRINT
16 sites · 32 subsidiaries

Disclosed major customers

Counterparties PENTA-OCEAN CONSTRUCTION CO.,LTD. named in its own annual securities report. A third-party company named here has PENTA-OCEAN CONSTRUCTION CO.,LTD. in its supply base.

国土交通省15% of revenue
“売上高総額に対する割合が100分の10以上の相手先別の売上高及びその割合は次のとおりである。第76期国土交通省119,389百万円15.0％”
Annual securities report (有価証券報告書), filed 2026-06-19 — EDINET S100YF3Y
シンガポール政府11.4% of revenue
“売上高総額に対する割合が100分の10以上の相手先別の売上高及びその割合は次のとおりである。シンガポール政府90,168百万円11.4％”
Annual securities report (有価証券報告書), filed 2026-06-19 — EDINET S100YF3Y
防衛省10.7% of revenue
“売上高総額に対する割合が100分の10以上の相手先別の売上高及びその割合は次のとおりである。防衛省84,667百万円10.7％”
Annual securities report (有価証券報告書), filed 2026-06-19 — EDINET S100YF3Y
The filing states a human-rights policy and describes human-rights due diligence: “人権を尊重する企業の責任を果たすため、「五洋建設グループ人権方針」に基づき活動。方針は2023年6月27日取締役会決議を経て策定・開示。人権委員会を設置し、人権デューデリジェンスを推進。2025年度は当社グループ、主な協力会社・資材納入会社を対象にモニタリングを実施。”

Sector risk context: supply-chain risk for Construction & EPC in Japan.

More Construction companies

CHUDENKO CORPORATIONDAIWA HOUSE INDUSTRY CO., LTD.JDC CORPORATIONKAJIMA CORPORATIONKumagaigumi Co.,Ltd.MATSUI CONSTRUCTION CO., LTD.Nishimatsu Construction Co., Ltd.OBAYASHI CORPORATION
Screening PENTA-OCEAN CONSTRUCTION CO.,LTD. or mapping suppliers like them? Check any company against sanctions and forced-labor lists, free.Free sanctions check →

Work at PENTA-OCEAN CONSTRUCTION CO.,LTD.? Claim this page to review the data your customers see.

Get sanctions & UFLPA list updates
A short note when the lists change in ways that matter for supply-chain screening. No noise.
Sources: EDINET code list (Financial Services Agency) and the company’s own annual securities report (有価証券報告書) retrieved via EDINET. Disclosed relationships are quoted from the filing and carry its EDINET accession number; extraction is automated and conservative — anything the filing does not state is left out. Tieron does not certify, audit or endorse the company, and this page contains no Tieron risk assessment. Report an issue with this page — corrections referencing the accession number shown above are fastest to verify.