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Asaka Riken Co.,Ltd. — Investor Relations & Filings

Ticker · 5724 ISIN · JP3109000004 T Water supply; sewerage, waste management and remediation activities
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Filings indexed 62 across all filing types
Latest filing 2026-05-15 Regulatory Filings
Country JP Japan
Listing T 5724

About Asaka Riken Co.,Ltd.

https://www.asaka.co.jp/english/

Asaka Riken Co., Ltd. is a resource recycling manufacturer specializing in the recovery and refining of valuable metals from secondary sources, a practice known as urban mining. The company's core precious metals business focuses on extracting gold, silver, platinum, and other rare metals from industrial waste and used electronic products. Its environmental business develops and provides photocatalyst products, water treatment solutions, and precision cleaning services for parts used in vacuum coating equipment. The company also engages in a software business. Through its operations, Asaka Riken aims to promote the effective use of finite resources and contribute to a sustainable, circular economy.

Recent filings

Filing Released Lang Actions
確認書
Regulatory Filings Classification · 87% confidence The document is titled a 半期報告書 (semiannual report) confirmation letter (“確認書”) submitted under Japan’s Financial Instruments and Exchange Act. It contains an officer’s attestation that the interim report’s contents are appropriately described, but it does not include any financial statements or substantive data. Under the Certification Rule, such officer certifications are classified as Regulatory Filings (RNS), not as the interim report itself.
2026-05-15 Japanese
半期報告書－第59期(2025/10/01－2026/09/30)
Interim / Quarterly Report Classification · 93% confidence The document is titled “半期報告書” (Half‐Year Report) filed under Article 24-5 of Japan’s Financial Instruments and Exchange Act, covering the interim consolidated accounting period from October 1, 2025 to March 31, 2026. It contains detailed interim consolidated financial statements (balance sheet, cash flow, segment data), management’s analysis of results, business risks and financial position, and other substantive data. This is a comprehensive financial report for a period shorter than a full fiscal year, matching our definition of an Interim/Quarterly Report. H1 2026
2026-05-15 Japanese
確認書
Audit Report / Information Classification · 95% confidence The document is a 'Confirmation Letter' (確認書) filed under Article 24-4-2 of the Financial Instruments and Exchange Act of Japan. This is a mandatory regulatory filing that accompanies an Annual Securities Report (Yukashoken Hokokusho) to confirm the accuracy of the report's contents. Since it is a specific regulatory filing required by the Japanese Financial Services Agency and does not fit into the other categories like 10-K or IR, it is classified as a Regulatory Filing (RNS). FY 2025
2025-12-23 Japanese
有価証券報告書－第58期(2024/10/01－2025/09/30)
Annual Report Classification · 100% confidence The document is a Japanese '有価証券報告書' (Yuuka Shouken Houkokusho), which is the standard Japanese equivalent of an Annual Report (10-K). It includes a cover page with the company name (Asaka Riken Co., Ltd.), the fiscal year (58th period, 2024-10-01 to 2025-09-30), and references to the Financial Instruments and Exchange Act. The presence of extensive XBRL-like tagging and detailed financial data confirms it is the full annual report, not an announcement or summary. FY 2025
2025-12-23 Japanese
確認書
Report Publication Announcement Classification · 100% confidence The document text contains the header "第２四半期報告書" (Second Quarter Report) and explicitly mentions confirming the appropriateness of the contents of the '半期報告書' (Half-Year Report) for the period ending March 31, 2025, in accordance with financial instruments laws. This strongly indicates a comprehensive financial report covering a period shorter than a year. This aligns perfectly with the definition of an Interim / Quarterly Report (Code: IR). The document length is short (557 chars), but the content is the substance of the confirmation regarding the report itself, not just an announcement of its publication, making IR more appropriate than RPA or RNS.
2025-05-15 Japanese
半期報告書－第58期(2024/10/01－2025/09/30)
Interim / Quarterly Report Classification · 100% confidence The document is a '第２四半期報告書' (Second Quarter Report) for the company '株式会社アサカ理研' (Asaka Riken Co., Ltd.) covering the period from October 1, 2024, to March 31, 2025. It contains detailed financial statements, including the balance sheet and income statement, and is filed in accordance with the Financial Instruments and Exchange Act. This fits the definition of an Interim/Quarterly Report (IR). H1 2025
2025-05-15 Japanese

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