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SUMCO CORPORATION — Investor Relations & Filings

Ticker · 3436 ISIN · JP3322930003 LEI · 353800SUSRUOM0V6KU92 T Manufacturing
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Filings indexed 66 across all filing types
Latest filing 2024-05-10 Annual Report
Country JP Japan
Listing T 3436

About SUMCO CORPORATION

https://www.sumcosi.com/english/

SUMCO CORPORATION is a manufacturer specializing in high-purity silicon wafers, the fundamental substrate material for the semiconductor industry. The company produces and supplies a range of high-quality products, including polished wafers and epitaxial wafers, which are essential for manufacturing various electronic devices. SUMCO serves the global semiconductor market by providing wafers engineered to meet diverse and advanced customer specifications, thereby supporting technological innovation across the electronics sector.

Recent filings

Filing Released Lang Actions
訂正有価証券報告書－第25期(2023/01/01－2023/12/31)
Annual Report Classification · 100% confidence The document is a Japanese 'Yuka Shoken Hokokusho' (Securities Report), which is the Japanese equivalent of a 10-K annual report. It contains a header identifying it as a filing under the Financial Instruments and Exchange Act, specifies the fiscal year (2023), and includes XBRL tags and financial statement structures. It is a comprehensive annual disclosure document, not an announcement or a summary. FY 2023
2024-05-10 Japanese
臨時報告書
AGM Information Classification · 100% confidence The document is titled '臨時報告書' (Extraordinary Report) and explicitly states in Section 1 ('提出理由') that it is being submitted because resolutions were passed at the company's '第25期定時株主総会' (25th Annual General Meeting) held on March 28, 2024. Section 2 ('報告内容') details the specific resolutions, which concern the election of directors, and provides the voting results (votes for, against, abstentions) for each nominee. This content directly relates to the official results of a shareholder meeting. The filing type '臨時報告書' (Extraordinary Report) in Japan often corresponds to filings reporting significant corporate events like AGM results. Among the provided codes, 'DVA' (Declaration of Voting Results & Voting Rights Announcements) is the most specific fit for reporting the outcome of shareholder votes at a general meeting. Although it is a report of the results, the document itself is the official filing announcing those results, making DVA appropriate over RPA or RNS.
2024-03-29 Japanese
内部統制報告書－第25期(2023/01/01－2023/12/31)
Governance Information Classification · 100% confidence The document header explicitly states the filing type as "内部統制報告書" (Internal Control Report) and cites the legal basis as Article 24-4-4, Paragraph 1 of the Financial Instruments and Exchange Act (金融商品取引法第24条の４の４第１項). The content discusses the framework, scope, criteria, and results of the assessment of internal controls over financial reporting, with a reference date of the end of the business year (2023年12月31日). This structure is characteristic of an annual internal control report, which is often filed alongside the 10-K in Japan, but based on the provided definitions, it most closely aligns with the scope of an Audit Report / Information (AR) as it deals with internal controls and assessment standards, although it is specifically an Internal Control Report. Given the options, 'AR' (Audit Report / Information) is the closest fit for a formal report detailing internal control assessment results, distinct from the full 10-K or a simple earnings release. However, since the document is a formal, comprehensive report on internal controls required by law, and not just a standalone audit opinion, it is a specific regulatory filing. In many contexts, this type of filing is closely related to the 10-K filing process. Since 'AR' is defined as 'Standalone audit reports, applied accounting principles, and results of internal or regulatory stress tests (excluding full Annual Reports)', this fits the description of reporting on internal control assessment results.
2024-03-29 Japanese
確認書
Audit Report / Information Classification · 95% confidence The document is extremely short (608 characters) and contains a header section typical of Japanese regulatory filings, specifically mentioning '確認書' (Confirmation Document) and referencing the '金融商品取引法' (Financial Instruments and Exchange Act). The core content confirms the appropriateness of the content of the company's '有価証券報告書' (Annual Securities Report) for the fiscal year ending December 31, 2023, signed by the CEO and CFO. This document is a certification or confirmation related to the Annual Report (10-K equivalent in Japan), but it is not the Annual Report itself. Since it is a specific regulatory confirmation document related to the annual filing, and there isn't a specific code for 'Annual Report Confirmation', it falls best under the general 'Regulatory Filings' (RNS) category, as it is a mandatory regulatory submission confirming another primary document's accuracy. Given the context of confirming the '有価証券報告書' (Annual Securities Report), it is closely related to the 10-K filing, but the document itself is a confirmation statement, not the full report. FY 2023
2024-03-29 Japanese
有価証券報告書－第25期(2023/01/01－2023/12/31)
Annual Report Classification · 100% confidence The document is a Japanese 'Yuka Shoken Hokokusho' (Securities Report), which is the Japanese equivalent of a 10-K annual report. It contains a formal header identifying the company (SUMCO Corporation), the fiscal period (2023-01-01 to 2023-12-31), and the regulatory filing basis (Financial Instruments and Exchange Act). The document structure includes sections for corporate information and financial indicators, confirming it is the comprehensive annual financial report. FY 2023
2024-03-29 Japanese
確認書
Report Publication Announcement Classification · 100% confidence The document is extremely short (612 characters) and explicitly states it is a '確認書' (Confirmation Document) submitted to the Kanto Local Finance Bureau Director based on Article 24-8, Paragraph 1 of the Financial Instruments and Exchange Act. It confirms the appropriateness of the content of the '第25期第３四半期（自 2023年７月１日 至 2023年９月30日）の四半期報告書' (Quarterly Report for the 3rd Quarter of the 25th Period). Since this document is a confirmation *about* a quarterly report, and not the comprehensive quarterly report itself, it fits the definition of a regulatory filing that doesn't fit other specific categories, or potentially a specific regulatory confirmation. Given the options, 'Interim / Quarterly Report' (IR) is for the comprehensive report. This confirmation document is a specific regulatory filing related to the quarterly report's accuracy. Since there is no specific code for a 'Quarterly Report Confirmation Document', and it is a formal regulatory submission, the most appropriate fallback is 'Regulatory Filings' (RNS), as it is a mandatory filing related to financial reporting compliance, but not the report itself.
2023-11-14 Japanese

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