Impressum
Legal Information and Company Details
Company Identification
Company Name
GrowthLab K.K.
Legal Form
Kabushiki Kaisha (Limited Liability Company)
Registered Address
3 Chome-1-5 Shirokane, Minato City, Tokyo 108-0072
Business Type
Educational Services and Business Consulting
Area of Activity
Growth Experimentation, Conversion Optimization, and Data Analytics Training
Contact Details
info@tarnexriver.com
Phone
+81 3-3280-2828
Business Hours
Monday - Friday: 9:00 AM - 6:00 PM JST
Saturday - Sunday: Closed
Contact Form
For general inquiries, please use our contact form.
Responsible Persons
Managing Director
Akira Tanaka
Responsible for overall business operations and strategic direction
Content Responsibility
Yuki Nakamura
Responsible for editorial content, educational materials, and website content
Technical Responsibility
Haruto Sato
Responsible for website maintenance, technical infrastructure, and data security
Data Protection Officer
Rina Yamamoto
Contact for privacy-related inquiries and data protection matters
Regulatory Information
Registration Number
Tokyo Legal Affairs Bureau: +81 3-3280-2828
Corporate Number
+81 3-3280-2828
Tax Identification
National Tax Agency Registration
Professional Liability Insurance
Professional indemnity insurance coverage is maintained through Tokyo Marine & Nichido Fire Insurance Co., Ltd.
Industry Memberships
Member of Business Federation (Keidanren) and Tokyo Chamber of Commerce and Industry
Liability Disclaimer
Content Liability
The content on this website has been created with care and to the best of our knowledge. However, we cannot guarantee the accuracy, completeness, or timeliness of all information provided. As a service provider, we are responsible for our own content on these pages under general laws. However, we are not obligated to monitor transmitted or stored external information or to investigate circumstances that indicate illegal activity.
Liability for Links
Our website may contain links to external third-party websites over which we have no control. Therefore, we cannot accept any liability for external content. The respective provider or operator of the linked pages is always responsible for the content of those pages. The linked pages were checked for possible legal violations at the time of linking. No illegal content was identified at the time of linking.
However, permanent monitoring of the linked pages is not reasonable without concrete evidence of a legal violation. If we become aware of legal violations, we will remove such links immediately.
Copyright Notice
The content and works created by the site operators on these pages are subject to copyright law. The reproduction, editing, distribution, and any kind of exploitation outside the limits of copyright require the written consent of the respective author or creator.
Downloads and copies of this site are only permitted for private, non-commercial use. Insofar as the content on this site was not created by the operator, the copyrights of third parties are respected. In particular, third-party content is marked as such. Should you nevertheless become aware of a copyright infringement, we ask you to inform us accordingly. If we become aware of legal violations, we will remove such content immediately.
Trademark Notice
All trademarks, service marks, and trade names referenced on this website are the property of their respective owners. The use of any trademark or service mark on this website does not imply any affiliation with or endorsement by the trademark owner.
Dispute Resolution
Consumer Dispute Resolution
We are committed to resolving disputes with customers in a fair and timely manner. In the event of a dispute, we encourage you to contact us directly through our contact page to seek resolution.
Alternative Dispute Resolution
For consumer disputes that cannot be resolved directly, alternative dispute resolution mechanisms may be available through:
- • National Consumer Affairs Center of
- • Tokyo Metropolitan Consumer Center
- • Commercial Arbitration Association
Jurisdiction
Any legal disputes arising from the use of this website or our services shall be subject to the exclusive jurisdiction of the courts in Tokyo.
Privacy and Data Protection
We take the protection of your personal data seriously. Our data processing activities comply with applicableese data protection laws and regulations.
For detailed information about how we collect, use, and protect your personal data, please refer to our comprehensive Privacy Policy.
If you have questions or concerns about data protection, please contact our Data Protection Officer through our contact page.
Additional Legal Information
For more information about our legal policies and practices, please review:
- Privacy Policy - How we handle your personal data
- Terms of Service - Terms governing use of our services
- Terms and Conditions - Legal agreement and user obligations
- Cookie Policy - How we use cookies and tracking technologies
- Advertising Disclosure - Transparency about advertising relationships
Contact for Legal Matters
For legal inquiries, compliance questions, or to report issues related to this website, please contact us through our contact page with "Legal Matter" in the subject line.
We aim to respond to all legal inquiries within 3-5 business days.