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SEIYU KOGYO Co.,Ltd. — Investor Relations & Filings

Ticker · 9170 ISIN · JP3417600008 T Construction
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Filings indexed 27 across all filing types
Latest filing 2026-05-18 Share Issue/Capital Cha…
Country JP Japan
Listing T 9170

About SEIYU KOGYO Co.,Ltd.

https://seiyukogyo.co.jp/

SEIYU KOGYO Co.,Ltd. is a company engaged in construction works and environmental services. It operates through two primary segments: Construction and Environmental Business. The Construction segment specializes in infrastructure projects, including heavy construction, roads, and bridges. The Environmental Business segment focuses on waste disposal services.

Recent filings

Filing Released Lang Actions
株式分割及び株式分割に伴う定款の一部変更並びに配当予想の修正（増配）に関するお知らせ
Share Issue/Capital Change Classification · 98% confidence The document is an announcement of a corporate action by the board of directors resolving a stock split (“株式分割”), amendment of the articles of incorporation accordingly, and a revision of the dividend forecast. This falls squarely under share capital changes. There is no full financial report, only a corporate action notice. Therefore, it should be classified as a Share Issue/Capital Change (SHA).
2026-05-18 Japanese
確認書
Regulatory Filings Classification · 85% confidence The document is a ‘確認書’ (confirmation letter) by the CEO and CFO certifying the accuracy of the half‐year report under Japan’s Financial Instruments and Exchange Act (Article 24-5). It does not include substantive financial statements or detailed interim results but serves as an officer attestation. Under the certification rule, such letters are classified as Regulatory Filings (RNS), not as the interim report itself.
2026-05-13 Japanese
半期報告書－第52期(2025/10/01－2026/09/30)
Interim / Quarterly Report Classification · 99% confidence The document is labeled “半期報告書” under Financial Instruments and Exchange Act Article 24-5 and covers the interim period from October 1, 2025 to March 31, 2026. It includes detailed interim consolidated financial statements (balance sheet, income statement, cash flows), segment analysis, management discussion, risk factors, corporate information, and auditor review. It is clearly a full semiannual (interim) report, not a short announcement or mere certification. This matches the definition for an Interim / Quarterly Report (IR). H1 2026
2026-05-13 Japanese
確認書
Regulatory Filings Classification · 100% confidence The document is a 'Confirmation Letter' (確認書) filed under the Financial Instruments and Exchange Act, Article 24-4-2, Paragraph 1. It serves as an officer certification regarding the accuracy of the company's Annual Securities Report (有価証券報告書). According to the 'Certification Rule', documents that are primarily officer certifications or attestations, even if they reference a specific report, should be classified as Regulatory Filings (RNS) rather than the report itself. FY 2025
2025-12-18 Japanese
有価証券報告書－第51期(2024/10/01－2025/09/30)
Annual Report Classification · 100% confidence The document is a Japanese 'Yuuka Shouken Houkokusho' (有価証券報告書), which is the standard Japanese equivalent of an Annual Report (10-K). It contains the formal cover page, fiscal year information (第51期), and extensive XBRL-tagged financial data, confirming it is the full annual report rather than an announcement or summary. FY 2025
2025-12-18 Japanese
半期報告書－第51期(2024/10/01－2025/09/30)
Interim / Quarterly Report Classification · 100% confidence The document is a '半期報告書' (Semi-Annual Report) for Seiyu Kogyo Co., Ltd., covering the period from October 1, 2024, to March 31, 2025. It contains detailed financial statements, including the balance sheet, income statement, and comprehensive income statement, as well as management analysis of financial conditions and operating results. This fits the definition of an Interim/Quarterly Report (IR) as it provides comprehensive financial data for a period shorter than a full fiscal year. H1 2025
2025-05-13 Japanese

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