Skip to main content
SEIKO ELECTRIC CO., LTD. logo

SEIKO ELECTRIC CO., LTD. — Investor Relations & Filings

Ticker · 6653 ISIN · JP3414900005 T Manufacturing
Open in API
Filings indexed 70 across all filing types
Latest filing 2026-04-22 Regulatory Filings
Country JP Japan
Listing T 6653

About SEIKO ELECTRIC CO., LTD.

https://www.seiko-denki.co.jp/en/

SEIKO ELECTRIC CO., LTD. is a manufacturer specializing in electrical and control systems that support social infrastructure. The company's core activities are organized into several business units. The Power System Business Unit delivers advanced control technologies for stable electric power supply. The Environmental Energy and Control Systems Business Unit provides green engineering and energy-saving solutions for both public and industrial sectors. The Power Electronics Unit develops technology to ensure a stable supply of renewable energy. The company's product portfolio includes supervision and control systems, electronic control devices, and a proprietary functional liquid crystal film known as 'SILF'. In addition to manufacturing, the company offers comprehensive IT system solutions and engineering services, including the sale and support of electrical machinery and equipment.

Recent filings

Filing Released Lang Actions
譲渡制限付株式報酬としての自己株式の処分に関するお知らせ
Regulatory Filings
2026-04-22 Japanese
2026年12月期第１四半期決算短信〔日本基準〕(連結)
Regulatory Filings
2026-04-22 Japanese
確認書
Regulatory Filings Classification · 90% confidence The document is a Japanese "Confirmation Certificate" (確認書) filed under the Financial Instruments and Exchange Act to certify the accuracy of the company’s Annual Securities Report (“有価証券報告書”) for the fiscal year. It is neither the report itself (10-K) nor a simple announcement of publication (RPA), but rather a regulatory filing that doesn’t fit other specific categories. Therefore it falls under the general Regulatory Filings category (RNS).
2026-03-26 Japanese
有価証券報告書－第122期(2025/01/01－2025/12/31)
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 (Seiko Electric Co., Ltd.), the fiscal year (2025-01-01 to 2025-12-31), and the filing date (2026-03-26). The document includes XBRL-style tags and metadata indicating it is a comprehensive annual financial disclosure, not an announcement or a summary. FY 2025
2026-03-26 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. It serves as an officer certification by the CEO regarding the accuracy of the Interim Report (半期報告書). 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, as they do not contain the actual financial statements themselves. H1 122
2025-08-07 Japanese
半期報告書－第122期(2025/01/01－2025/12/31)
Interim / Quarterly Report Classification · 100% confidence The document is a '半期報告書' (Semi-Annual Report) for the company '株式会社正興電機製作所' (Seiko Electric Co., Ltd.) covering the period from January 1, 2025, to June 30, 2025. It contains detailed financial statements, including the balance sheet and management analysis, as required by the Financial Instruments and Exchange Act of Japan. This fits the definition of an Interim/Quarterly Report (IR). H1 2025
2025-08-07 Japanese

Browse filings by year

12 years

Report missing filing

Can't find a specific document? Let us know and we'll add it within 24 hours.

We will notify you once the filing is added.
Report sent
Thank you. We will check the data and update it shortly.