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Tsubota Laboratory Incorporated — Investor Relations & Filings

Ticker · 4890 ISIN · JP3535700003 T Professional, scientific and technical activities
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Filings indexed 38 across all filing types
Latest filing 2026-05-20 Regulatory Filings
Country JP Japan
Listing T 4890

About Tsubota Laboratory Incorporated

https://tsubota-lab.com/en/

Tsubota Laboratory Incorporated is a research and development company that originated as a startup from Keio University. It is engaged in the creation of pharmaceuticals and medical devices. The company's primary focus is on ophthalmology, developing solutions for conditions such as myopia, dry eye, and presbyopia. Additionally, it explores treatments for central nervous system (CNS) disorders and brain diseases. The corporate strategy centers on out-licensing its developed pipelines to commercial partners. A notable pipeline is a therapeutic candidate designed to curtail the progression of myopia.

Recent filings

Filing Released Lang Actions
臨時報告書
Regulatory Filings Classification · 85% confidence The document is a Japanese "臨時報告書" filed under the Financial Instruments and Exchange Act to notify a change in the company’s audit firm. It is not an annual or interim financial report, not an earnings announcement, nor a management or director change (the auditors are independent third parties). It is a mandatory regulatory disclosure of special corporate information. Under the given taxonomy, this falls into the generic “Regulatory Filings” category (RNS) as it is a statutory report filing that does not fit other specific categories.
2026-05-20 Japanese
会計監査人の異動に関するお知らせ
Regulatory Filings Classification · 90% confidence The document is a formal corporate press release announcing the change of the company’s external accounting auditor (公認会計士) effective at the upcoming annual general meeting. It does not contain actual audited financial statements (so it is not an Audit Report itself), nor is it detailing management or board member changes. It is a compliance/regulatory announcement notifying stakeholders of the auditor appointment and resignation. Therefore, it falls into the ‘Regulatory Filings’ fallback category.
2026-05-20 Japanese
第14 期定時株主総会の付議議案の決定に関するお知らせ
Regulatory Filings Classification · 85% confidence The document is a short public notice dated May 20, 2026, announcing that the board of directors has resolved the date, venue and agenda items for the 14th Annual General Meeting of shareholders. It does not include the actual proxy materials or detailed meeting presentations, nor substantive financial data. It is essentially a miscellaneous regulatory disclosure regarding the AGM, thus falling into the fallback category for general regulatory announcements.
2026-05-20 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, Article 24-5-2, Paragraph 1. It serves as an officer certification confirming the accuracy of a previously filed semi-annual report. According to the 'CERTIFICATION RULE', documents that are primarily officer certifications or attestations, even if they reference a specific report type, should be classified as Regulatory Filings (RNS) rather than the report itself. H1 14
2025-11-12 Japanese
半期報告書－第14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) for '株式会社坪田ラボ' (Tsubota Laboratory Incorporated) covering the period from April 1, 2025, to September 30, 2025. It contains detailed financial statements (balance sheets, etc.), management analysis, and audit information. According to the filing definitions, a comprehensive financial report for a period shorter than a full fiscal year (like a half-year report) containing actual financial statements is classified as an Interim / Quarterly Report (IR). H1 2025
2025-11-12 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 based on Article 24-5, Paragraph 4 of the Financial Instruments and Exchange Act and related regulations, following the resolutions passed at the Annual General Meeting (AGM) held on June 25, 2025. Section 2 details the resolutions, specifically the election of directors and auditors, along with the voting results (votes for, against, abstentions). This content perfectly matches the definition of reporting the results of a shareholder vote, which corresponds to the Declaration of Voting Results & Voting Rights Announcements (DVA). Although it relates to an AGM, the primary purpose is reporting the *results* of the vote, not providing AGM materials (AGM-R) or proxy information (PSI).
2025-06-27 Japanese

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