Skip to main content
Kumagaigumi Co.,Ltd. logo

Kumagaigumi Co.,Ltd. — Investor Relations & Filings

Ticker · 1861 ISIN · JP3266800006 LEI · 529900M993KYZI2Q1Q47 T Construction
Open in API
Filings indexed 66 across all filing types
Latest filing 2026-05-08 Major Shareholding Noti…
Country JP Japan
Listing T 1861

About Kumagaigumi Co.,Ltd.

https://www.kumagaigumi.co.jp/en/index.…

Kumagaigumi Co., Ltd. is a general construction company specializing in civil engineering and architectural construction. The company's operations are centered on four main pillars: building social infrastructure, creating urban environments, protecting the natural environment, and preparing for disasters. It provides comprehensive services that span the entire project life cycle, from initial consultation, planning, and design to construction, operation, maintenance, analysis, and renewal. The firm has a history of undertaking large-scale projects, demonstrating its technical capabilities in areas such as dams, tunnels, and railways. Kumagaigumi focuses on delivering total solutions that support society, the economy, and daily life, rather than solely focusing on the construction phase.

Recent filings

Filing Released Lang Actions
臨時報告書
Major Shareholding Notification Classification · 95% confidence The document is titled '臨時報告書' which translates to 'Extraordinary Report' or 'Timely Report'. It is submitted to the Kanto Finance Bureau and concerns a change in a major shareholder's voting rights, specifically detailing the decrease in ownership percentage of Oasis Management Company Ltd. The document references the Financial Instruments and Exchange Act and disclosure regulations, indicating it is a regulatory filing related to shareholding changes. However, it is not a full report like an Annual Report or Interim Report, nor is it a simple announcement of a report publication. It is a formal regulatory disclosure of a major shareholding change, which fits the category of Major Shareholding Notification (MRQ). The document length is short (1578 characters), and it contains specific data about shareholding changes, not just a notice or certification. Therefore, the appropriate classification is MRQ with high confidence.
2026-05-08 Japanese
主要株主の異動に関するお知らせ
Regulatory Filings
2026-05-01 Japanese
自己株券買付状況報告書（法２４条の６第１項に基づくもの）
Transaction in Own Shares Classification · 95% confidence The document is titled “自己株券買付状況報告書（法24条の６第１項に基づくもの）” filed under the Financial Instruments and Exchange Act Article 24-6, Paragraph 1. It reports detailed quantities and dates of the company’s own share repurchases for the period from 2026/03/01 to 2026/03/31. This corresponds exactly to a report of transactions in the company’s own shares (share buyback). According to the classification definitions, such filings belong under “Transaction in Own Shares” (Code: POS).
2026-04-09 Japanese
自己株券買付状況報告書（法２４条の６第１項に基づくもの）
Transaction in Own Shares Classification · 100% confidence The document is a 'Report on Status of Purchase of Treasury Shares' (自己株券買付状況報告書) filed under Article 24-6, Paragraph 1 of the Financial Instruments and Exchange Act of Japan. It details the company's (Kumagai Gumi Co., Ltd.) share buyback activities for the period of February 2026. This specific type of regulatory filing regarding the company's own share transactions falls under the 'Transaction in Own Shares' (POS) category.
2026-03-13 Japanese
確認書
Regulatory Filings Classification · 100% confidence The document is titled '確認書' (Confirmation Letter) and explicitly cites '金融商品取引法第24条の５の２第１項' (Article 24-5-2, Paragraph 1 of the Financial Instruments and Exchange Act). It serves as an officer certification confirming the accuracy of the semi-annual report. According to the 'CERTIFICATION RULE', documents that are primarily officer certifications or attestations, even if they reference a report (in this case, the semi-annual report), should be classified as Regulatory Filings (RNS). H1 89
2025-11-13 Japanese
半期報告書－第89期(2025/04/01－2025/09/30)
Interim / Quarterly Report Classification · 100% confidence The document is a '半期報告書' (Semi-Annual Report) filed by Kumagai Gumi Co., Ltd. under the Financial Instruments and Exchange Act of Japan. It contains comprehensive financial statements, management analysis, and audit review information for the interim period ending September 30, 2025. This fits the definition of an Interim/Quarterly Report (IR). H1 2026
2025-11-13 Japanese

Browse filings by year

12 years

Report missing filing

Can't find a specific document? Let us know and we'll add it within 24 hours.

We will notify you once the filing is added.
Report sent
Thank you. We will check the data and update it shortly.