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Sekisui Kasei Co.,Ltd. — Investor Relations & Filings

Ticker · 4228 ISIN · JP3419800002 T Manufacturing
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Filings indexed 64 across all filing types
Latest filing 2026-04-27 Regulatory Filings
Country JP Japan
Listing T 4228

About Sekisui Kasei Co.,Ltd.

https://www.sekisuikasei.com/en/

Sekisui Kasei Co., Ltd. is a manufacturer specializing in foamed plastics and functional polymeric materials. Leveraging its core foam and polymerization technologies, the company develops and supplies a wide range of products across two primary business fields: the Industry Segment and the Human Life Segment. Its materials are utilized in diverse applications, including automobile components, industrial packaging, and electronic parts. The company focuses on providing advanced chemical solutions that support various industries and contribute to daily life, aiming to create new value through its advanced manufacturing capabilities.

Recent filings

Filing Released Lang Actions
臨時報告書
Regulatory Filings Classification · 1% confidence The document is a Japanese “臨時報告書” (Timely Disclosure Report) filed under the Financial Instruments and Exchange Act to disclose a material event (recognition of deferred tax assets). It is not an annual or interim report, earnings release, management presentation, or any of the other specialized categories. It is a regulatory disclosure of a material event, falling into the general “Regulatory Filings” fallback category.
2026-04-27 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, Article 24-5-2, Paragraph 1. It serves as an officer certification regarding the accuracy of the 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 a semi-annual report. H1 82
2025-11-14 Japanese
半期報告書－第82期(2025/04/01－2026/03/31)
Interim / Quarterly Report Classification · 1% confidence The document is a '半期報告書' (Semi-Annual Report) filed by Sekisui Kasei Co., Ltd. with the Kanto Local Finance Bureau. It contains detailed financial statements, management analysis (MDA), and operational data for the period from April 1, 2025, to September 30, 2025. This document is a comprehensive interim financial report required under the Financial Instruments and Exchange Act of Japan, fitting the definition of an Interim/Quarterly Report (IR). H1 82
2025-11-14 Japanese
訂正臨時報告書
Regulatory Filings Classification · 1% confidence The document is a 'Rinji Hokokusho' (Extraordinary Report) filed with the Kanto Local Finance Bureau in Japan. It details specific corporate events, namely the liquidation and divestment of subsidiaries (Proseat SAS, Proseat GmbH & Co.KG, and Proseat Foam Manufacturing, s.l.). In the context of Japanese regulatory filings, these reports are mandatory disclosures for material corporate changes. Since it does not fit into specific categories like M&A (which usually refers to acquiring or merging with other entities) or other specialized categories, it is classified as a general Regulatory Filing (RNS).
2025-09-02 Japanese
臨時報告書
AGM Information Classification · 1% confidence The document is titled "臨時報告書" (Extraordinary Report/Timely Disclosure Report) and explicitly states in Section 1 that it is being filed pursuant to Article 24-5, Paragraph 4 of the Financial Instruments and Exchange Act because resolutions were passed at the 81st Annual General Meeting (AGM) held on June 24, 2025. Section 2 details the resolutions, specifically the election of directors and auditors, and provides the voting results (votes for, against, abstentions). This content perfectly matches the definition of reporting the results of a shareholder vote following a general meeting. Therefore, the appropriate classification is Declaration of Voting Results & Voting Rights Announcements (DVA).
2025-06-26 Japanese
確認書
Regulatory Filings Classification · 1% confidence The document is titled '確認書' (Confirmation Letter) and is submitted under the Financial Instruments and Exchange Act. It serves as an officer certification by the CEO of Sekisui Kasei Co., Ltd. confirming 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
2025-06-25 Japanese

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