Skip to main content
Kohjin Bio Co., Ltd. logo

Kohjin Bio Co., Ltd. — Investor Relations & Filings

Ticker · 177A ISIN · JP3283630006 T Manufacturing
Open in API
Filings indexed 16 across all filing types
Latest filing 2026-05-25 Regulatory Filings
Country JP Japan
Listing T 177A

About Kohjin Bio Co., Ltd.

https://kohjin-bio.jp/en/

Kohjin Bio Co., Ltd. is a biotechnology company that develops, manufactures, and sells a range of products for life science research and clinical applications. The company's core offerings include tissue culture media, with a focus on serum-free formulations for regenerative medicine and immunotherapy research, as well as media for microbial testing and diagnostics. It also supplies animal-derived biological materials such as blood, serum, and plasma. Additionally, Kohjin Bio provides contract cell processing services for cancer immune cell therapy in collaboration with medical institutions and offers products like in vitro diagnostic drugs and immunochromatographic assay kits.

Recent filings

Filing Released Lang Actions
臨時報告書
Regulatory Filings Classification · 82% confidence The document is a Japanese "臨時報告書" (extraordinary report) filed under the Financial Instruments and Exchange Act, disclosing the planned change of external statutory auditor (会計監査人). It is not the actual audit report but a regulatory disclosure of auditor appointment/resignation. It does not contain substantive financial statements or qualify as an Annual Report, Interim Report, Audit Report, or management change (board/executives). It is therefore a general regulatory filing, best classified under Regulatory Filings (RNS).
2026-05-25 Japanese
確認書
Report Publication Announcement Classification · 100% confidence The document is a 'Confirmation Letter' (確認書) filed under the Financial Instruments and Exchange Act, specifically confirming the accuracy of the contents of a Semi-Annual Report (半期報告書). Since it is a regulatory filing confirming the validity of financial reporting and does not fit into the specific categories of the reports themselves, it falls under the general regulatory filing category.
2025-11-13 Japanese
半期報告書－第45期(2025/04/01－2026/03/31)
Interim / Quarterly Report Classification · 100% confidence The document is a '半期報告書' (Semi-Annual Report) filed with the Kanto Local Finance Bureau under the Financial Instruments and Exchange Act. It contains detailed financial statements, management analysis (MDA), and operational data for the interim period (April 1, 2025, to September 30, 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
2025-11-13 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 that it is being submitted because resolutions were passed at the '第46回定時株主総会' (46th Annual General Meeting) held on June 27, 2025. Section 2 details the resolutions, including dividend approval and director elections, along with the voting results (votes for, against, abstentions). This content perfectly matches the definition of reporting the results of a shareholder meeting. The most specific code for reporting voting results from a general meeting is 'DVA' (Declaration of Voting Results & Voting Rights Announcements). Although it relates to an AGM, the core purpose is reporting the *results* of the vote, not general AGM presentation materials (AGM-R).
2025-06-27 Japanese
内部統制報告書－第44期(2024/04/01－2025/03/31)
Governance Information Classification · 100% confidence The document contains Japanese text with headers like '【提出書類】 内部統制報告書' (Filing Document: Internal Control Report) and references to '金融商品取引法第24条の４の４第１項' (Financial Instruments and Exchange Act Article 24-4-4, Paragraph 1). It explicitly discusses the framework, scope, criteria, and results of the evaluation of internal controls over financial reporting ('財務報告に係る内部統制'). This directly corresponds to the requirements for an Internal Control Report, which is a specific type of annual filing related to financial reporting integrity, often filed alongside the 10-K or as a standalone report in Japan. Given the options, 'Audit Report / Information' (AR) is the closest fit as it covers reports on internal or regulatory stress tests and applied accounting principles, although 'Internal Control Report' is a distinct category in many jurisdictions. Since there is no specific code for an 'Internal Control Report', and this document details the results of an internal control assessment, it aligns best with 'AR' (Audit Report / Information) which covers reports on internal controls/tests, rather than the full Annual Report (10-K) or a simple Earnings Release (ER). The document length is substantial enough to be the report itself, not just an announcement.
2025-06-24 Japanese
確認書
Audit Report / Information Classification · 98% confidence The document is extremely short (607 characters) and contains a header section typical of Japanese regulatory filings, specifically mentioning '有価証券報告書' (Annual Securities Report, equivalent to 10-K in structure but filed under Japanese law) and a '確認書' (Confirmation Document) signed by the CEO and CFO, confirming the appropriateness of the Annual Securities Report for the fiscal year ending March 31, 2025. This confirmation document itself is not the full Annual Report (10-K) or the Interim Report (IR). Since it is a specific confirmation document related to a major filing, and it doesn't fit perfectly into the other categories (like ER, AR, or LTR), it is best classified as a general Regulatory Filing (RNS) or potentially an Audit Report/Information (AR) if the confirmation implies an audit sign-off, but given the context of confirming the *Securities Report's* appropriateness, RNS is the most appropriate fallback for a specific, non-standard confirmation document, or AR if we interpret '確認書' as related to assurance/audit. Given the options, and that it is a formal confirmation related to the annual filing process, AR (Audit Report / Information) is a plausible fit as it relates to assurance/verification, but RNS (Regulatory Filings) is the safest fallback for specific, non-core documents. However, since the document explicitly confirms the '有価証券報告書' (Annual Securities Report), and this confirmation is a required regulatory step, I will lean towards the most specific category that covers assurance/verification, which is AR, or the general regulatory fallback RNS. Given the structure, it is a specific regulatory confirmation, making RNS the best fit as it is not the full report itself. FY 2025
2025-06-24 Japanese

Browse filings by year

3 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.