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Konoshima Chemical Co.,Ltd. — Investor Relations & Filings

Ticker · 4026 ISIN · JP3289000006 T Manufacturing
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Filings indexed 58 across all filing types
Latest filing 2025-12-10 Regulatory Filings
Country JP Japan
Listing T 4026

About Konoshima Chemical Co.,Ltd.

https://www.konoshima.co.jp/eng/

Konoshima Chemical Co., Ltd. is a manufacturer specializing in inorganic chemistry, with operations centered on three core business segments: chemicals, building materials, and ceramics. The chemicals division leverages over a century of expertise, including proprietary technology for extracting magnesium from seawater, to produce high-purity magnesium compounds like magnesium oxide and magnesium hydroxide. It utilizes advanced techniques for particle size control, impurity control, and surface modification. The building materials division develops and supplies a wide range of ceramic-based materials for residential, commercial, and industrial structures, including fireproof siding, ceiling boards, and soundproof flooring. The advanced ceramics division produces specialized materials using original densification and transparency technologies, with a key product being transparent YAG (Yttrium Aluminum Garnet) ceramics for laser applications.

Recent filings

Filing Released Lang Actions
確認書
Regulatory Filings Classification · 1% confidence The document is a 'Confirmation Letter' (確認書) filed under the Financial Instruments and Exchange Act. It serves as an officer certification by the CEO of Konoshima Chemical Co., Ltd. regarding the accuracy of the contents of a semi-annual report. According to the 'CERTIFICATION RULE', documents that are primarily officer certifications or attestations should be classified as Regulatory Filings (RNS), even if they reference a specific report type like an interim/semi-annual report. H1 110
2025-12-10 Japanese
半期報告書－第110期(2025/05/01－2026/04/30)
Interim / Quarterly Report Classification · 1% confidence The document is a '半期報告書' (Semi-Annual Report) filed by Konoshima Chemical Co., Ltd. with the Kinki Local Finance Bureau under the Financial Instruments and Exchange Act. It contains detailed financial statements, management analysis (MDA), and corporate information for the interim period ending October 31, 2025. As it is a comprehensive financial report for a period shorter than a full fiscal year, it is classified as an Interim/Quarterly Report. H1 2026
2025-12-10 Japanese
内部統制報告書－第109期(2024/05/01－2025/04/30)
Governance Information Classification · 1% confidence The document is titled '内部統制報告書' (Internal Control Report) and explicitly references compliance with the Financial Instruments and Exchange Act ('金融商品取引法第24条の４の４第１項'). It details the scope, criteria ('財務報告に係る内部統制の評価及び監査の基準'), measurement date ('2025年４月30日'), and the conclusion that internal controls over financial reporting are effective. This structure and content perfectly match the definition of an Audit Report / Information (AR), which covers internal or regulatory stress tests and applied accounting principles, distinct from the full Annual Report (10-K). Although it is a report itself, 'AR' is the closest fit among the provided codes for a standalone internal control assessment report.
2025-07-16 Japanese
確認書
Audit Report / Information Classification · 1% confidence The document is extremely short (597 characters) and appears to be a confirmation document ('確認書') related to the appropriateness of the contents of a Securities Report ('有価証券報告書') for the 109th fiscal period (May 1, 2024, to April 30, 2025). It is signed by the Representative Director and President. This structure—a brief confirmation document referencing a major filing (like a 10-K or IR) but not containing the full report itself—strongly suggests it is an announcement or certification related to the filing rather than the filing itself. Given the options, this document serves as a regulatory confirmation or notice. Since it is not a standard Earnings Release (ER), Interim Report (IR), or a specific announcement like a dividend or management change, and it is a short regulatory notice, it fits best under the general 'Regulatory Filings' (RNS) category, as it is a required submission confirming the accuracy of another document, or potentially a specific confirmation document that doesn't map perfectly elsewhere. However, based on the 'MENU VS MEAL' rule, since it is a short document announcing/confirming the status of a major report, RNS is the most appropriate fallback for a miscellaneous regulatory submission. FY 2025
2025-07-16 Japanese
有価証券報告書－第109期(2024/05/01－2025/04/30)
Annual Report Classification · 1% confidence The document is a Japanese 'Yuka Shoken Hokokusho' (Securities Report), which is the Japanese equivalent of a 10-K annual report. It contains comprehensive financial data, including a multi-year summary of key management indicators, balance sheets, and income statements for the fiscal year ending April 30, 2025. It is clearly the full annual report and not an announcement or summary. FY 2025
2025-07-16 Japanese
確認書
Regulatory Filings Classification · 1% confidence The document is a 'Confirmation Letter' (確認書) filed under the Financial Instruments and Exchange Act. It serves as an officer certification regarding the accuracy of a previously filed semi-annual report. According to the 'CERTIFICATION RULE', documents that are primarily officer certifications or attestations, even if they reference a specific report type (like a semi-annual report), should be classified as Regulatory Filings (RNS) rather than the report itself. H1 109
2024-12-11 Japanese

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