Teambox
Teambox is a Tokyo-based, founder-owned firm founded in 2014 that delivers customized multi-month leadership development and organizational transformation programs — grounded in Adult Development Theory and dedicated Growth Trainer accompaniment — to 150+ Japanese enterprises, complemented by a consumer-facing subscription focus/coaching service called Teambox Space.
- Company typePrivate
- Founded2014
- HeadquartersTokyo, Japan
- Headcount—
- GTM typeB2B
- OfferingServices
What Teambox does
Teambox (株式会社チームボックス) is a Tokyo-based leadership development and organizational transformation firm founded in 2014 by Ryuji Nakatake. The firm delivers customized, multi-month corporate training programs — anchored in Adult Development Theory, Followership Theory, and the proprietary 'Unlearn' (アンラーン) and YETMIND© frameworks — that combine on-site experiential components (e.g., outdoor Reborn Camp), group sessions, individual coaching, and ongoing accompaniment by dedicated Growth Trainers. Its portfolio spans the leadership development lifecycle: Teambox LEAGUE (long-term continuous training for managers/executives), CLO (Chief Learning Officer supporting programs), Teambox TAO (women's leadership), Teambox DIALOG (1on1 training), Teambox OS (Z-generation / early-career), and Reborn Camp (outdoor executive philosophy training). Customer logos include Recruit, Itochu Marubeni Steel, Omron Healthcare, JT, Hokto, Money Forward, IDOM, CARTA Holdings, Bulnet, and the Saitama Seibu Lions baseball organization.
The business operates primarily as a sales-led enterprise services business: 150+ clients across Japan, served through direct enterprise sales and partner channels such as Wevox (Atrae) and Meiko Career Partners. Enterprise engagements are customized per client and delivered by dedicated trainer teams over ~5-month cycles, generating professional-services revenue. Complementing that core, Teambox Space (launched March 2023) is a 15,000 JPY/month subscription focus/coaching service delivered through virtual concentration environments, 1on1 focus coaching, and community sessions — the firm's only self-serve / PLG channel. The company is privately held and founder-owned, with no disclosed external funding; as of June 2026 it operates under a co-representative structure with Ryuji Nakatake (CEO) and Chieko Seta (COO) jointly leading the organization. A 2024 ACM CUI-accepted research collaboration on AI-chatbot-augmented coaching represents the firm's principal AI/ML activity to date, positioned as a complement to human coaching rather than a deployable AI product.
Teambox firmographics
Firmographics- Name
- Teambox
- Legal name
- 株式会社チームボックス
- Website
- https://corp.teambox.co.jp
- Company type
- Private
- Founded year
- 2014
- Operating status
- Operating
- Short description
- Teambox is a Tokyo-based, founder-owned firm founded in 2014 that delivers customized multi-month leadership development and organizational transformation programs — grounded in Adult Development Theory and dedicated Growth Trainer accompaniment — to 150+ Japanese enterprises, complemented by a consumer-facing subscription focus/coaching service called Teambox Space.
- Ownership category
- akta.pro rank
Teambox industry classification
Industry- Product category
- Corporate Leadership Development Training
- NAICS
- Professional and Management Development Training (611430), Professional and Management Development Training (61143)
- akta.pro primary industry
- Team Leadership & High-Performance Teams (EDABAAAH)
- akta.pro secondary industries
- Corporate & Leadership Development (BPACANAA), Team & Group Executive Coaching (Leadership Teams) (EDABANAF), Organizational Culture & Values-Based Leadership (EDABAAAE), Inclusive Leadership & Leading Diverse Teams (EDABAAAM)
Keywords
Where Teambox is headquartered
LocationHeadquarters
- HQ city
- Tokyo
- HQ country
- Japan
- HQ region
- Asia
Offices1 record
Markets served
Teambox business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D
Revenue model
- Leadership Development Training Programs: Teambox's primary revenue stream comes from customized corporate training programs targeting management and executive levels. Programs include Teambox LEAGUE (long-term continuous leadership training), Teambox TAO (women's leadership development), Reborn Camp (outdoor-based leadership philosophy training), Teambox DIALOG (1on1 training), Teambox OS (Z-generation/new graduate development), and CLO (Chief Learning Officer) accompanying support. Programs are typically multi-month engagements sold as enterprise contracts.
- Teambox Space Subscription: Teambox Space is a subscription-based coaching service for personal focus/concentration improvement. Users pay a monthly subscription fee to access virtual focus environments, community sessions, and 1on1 focus coaching. Launched March 1, 2023.
- Organizational Development Consulting: Teambox provides organizational culture transformation consulting and coaching services, including CLO (Chief Learning Officer) program engagements that involve ongoing organizational development support over extended periods, helping embed a learning culture at the executive and organizational level.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Teambox Space monthly subscription — 15,000 JPY/month (excluding tax) |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels8 records
Teambox product offering
Product offeringCore offering
Teambox designs and delivers customized, multi-month corporate leadership development and organizational culture transformation programs for Japanese enterprises, combining Adult Development Theory-based curriculum with dedicated Growth Trainer (グローストレーナー) accompaniment, outdoor experiential training, group sessions, and 1on1 coaching. Its product portfolio includes Teambox LEAGUE (continuous leadership training), Teambox TAO and TAO CLASS (women's leadership development), Reborn Camp (outdoor leadership philosophy), Teambox DIALOG (manager 1on1 training), Teambox OS (Z-generation development), CLO (Chief Learning Officer) program, and Teambox Space (subscription-based virtual focus coaching). The company serves more than 150 Japanese corporations including Recruit, Itochu Marubeni Steel, Omron Healthcare, Japan Tobacco, Hokto, Money Forward, IDOM, and the Saitama Seibu Lions.
Differentiator
Problem solved
Functional benefit
Products and services
- Teambox LEAGUE Long-term, continuous leadership training program (approximately 5 months) for management-level employees and executives at Japanese enterprises. Combines Adult Development Theory-based curriculum with dedicated Growth Trainer accompaniment, group sessions, individual 1on1 coaching, and outdoor experiential components, driving behavioral change from 'knowing' to 'doing'.
- Teambox TAO Women's leadership development program for female managers and next-generation women leaders in Japanese corporations. Delivered as 4 group training sessions and 4 individual coaching sessions, enabling participants to develop their own authentic leadership style and live and work 'lively' on their own terms.
- Teambox TAO CLASS Cross-company women's leadership program with a 1-company-1-seat limit, enabling participants to engage in cross-industry peer learning (越境学習) and broaden their perspective.
- Reborn Camp Outdoor-based leadership philosophy training program delivered in a two-month format combining theory and practice, with dedicated Growth Trainer support. Designed for senior executives and C-suite leaders to redefine their leadership philosophy and 'Being' (existence as leader) rather than only 'doing' (management tasks).
- Teambox DIALOG Manager-focused 1on1 training program that teaches followership-based leadership habits, enabling managers to run effective 1on1 meetings and become more effective leaders.
- Teambox OS Z-generation / early-career employee development program for new graduates through employees in their first 5 years, as well as pre-employment candidates. Promotes self-directed growth, career autonomy, and proactive behavior using Adult Development Theory frameworks.
- CLO (Chief Learning Officer) Program Ongoing organizational development support for Chief Learning Officers and HR leadership, providing a 'family doctor' model of accompaniment to embed a learning culture at the executive and organizational level over extended periods.
- Teambox Space Subscription-based virtual focus coaching service (15,000 JPY/month, tax excluded) that provides virtual concentration spaces, focus planning and reflection, work alongside focus partners, and 1on1 coaching from dedicated focus coaches. Includes Morning/Evening Daily Spaces, Weekly Space, Shot Space, Sharing Space, Monthly Space, and Space Voice audio content.
Companies that use Teambox
Customer profileNamed customers11 records
Segments5 records
Ideal customer profiles1 record
Teambox technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability3 records
Feature5 records
Teambox partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered core, minor and flagship.
- Kato Yohei (加藤洋平)coreKato Yohei, a leading authority on Adult Development Theory (成人発達理論) in Japan, co-authored '「人の器」の磨き方' with Teambox CEO Ryuji Nakatake, published by Japan Management Association Center. This collaboration integrates Kato's academic expertise with Teambox's practical coaching methodology, strengthening the theoretical foundation of Teambox's programs.
- Rikkyo University / LDC (立教大学 / LDC)minorTeambox COO Chieko Seta attended Rikkyo University's LDC (Leadership Development Course) graduate program, and later collaborated with LDC faculty including Fujisawa Hiromi (客員副教授) on educational content. This academic connection supports research and thought leadership in leadership development.
- ZEN University (ZEN大学)minorFujisawa Hiromi, Rikkyo University guest associate professor and collaborator with Teambox, also serves as a guest lecturer at ZEN University in the Department of Intelligent Information Sociology. Teambox's connection through its executives to ZEN University's career education curriculum represents an academic channel partnership.
- Saitama Seibu Lions (埼玉西武ライオンズ)flagshipTeambox has partnered with Saitama Seibu Lions for approximately 5 years, delivering long-term coaching and leadership development programs to approximately 60 farm coaches. The baseball club has been recognized with the 'Most Unlearning Company' award for its sustained commitment to organizational culture transformation. This is the most prominent publicly documented case study of Teambox's methodology in a professional sports organization.
- Hitoshi Kusunoki, Special Professor at Hitotsubashi Business School (一橋ビジネススクール特任教授 楠木建)flagshipProfessor Kusunoki delivered a keynote speech on 'Leader's preferences/likes and strong organizational decision-making' at Teambox's annual Family Premium Meeting customer event. He then engaged in a dialogue with Teambox CEO Nakatake. His academic prestige in strategy and organizational theory adds credibility to Teambox's thought leadership positioning.
- AI Humanity & Creativity LabminorTeambox participated in collaborative research on AI chatbot-powered coaching, resulting in acceptance at the ACM CUI international conference. The AI Humanity & Creativity Lab is the research initiative through which follow-up webinars on the research findings are hosted. This partnership extends Teambox's reach into technology-enhanced learning innovation.
- Meiko Career Partners (明光キャリアパートナーズ)minorTeambox Director Yamamoto appeared as a speaker at a reskilling seminar hosted by Meiko Career Partners. This webinar focused on internal reskilling importance and employee learning motivation. The partnership extends Teambox's brand visibility to HR professionals in Meiko's network.
- EVOL Corporation (EVOL株式会社)coreEVOL株式会社 代表取締役CEO 前野マドカ serves as a guest lecturer/co-lead facilitator for Teambox TAO (women's leadership development program). 前野マドカ is a recognized authority in women's happiness studies (女性のための幸せ学) and positive psychology. She co-designs and co-delivers the program alongside Teambox executives, contributing her expertise in well-being and authentic leadership.
- Atrae Inc. / Wevox (株式会社アトラエ / Wevox)coreTeambox partnered with Atrae Inc.'s Wevox platform to deliver a public leadership training experience workshop as part of Wevox Engagement Run! Academy. This collaboration extends Teambox's reach to mid-market companies on the Wevox platform, with Wevox handling registration and event logistics while Teambox provides content and facilitation.
- Japanese Management Association Center / Japan Management Association (日本能率協会マネジメントセンター)coreJapan Management Association Center (JMAC) serves as the publisher for multiple books by Teambox executives, including CEO Ryuji Nakatake's co-authored book '「人の器」の磨き方' (with adult development theory authority 加藤洋平), and COO Chieko Seta's solo debut '完璧なリーダーをやめたら、人と組織が動き出した'. JMAC is a major Japanese management publishing house providing credibility and distribution for Teambox's thought leadership content.
Scale indicators3 records
Recent moves10 records
Expansion highlights6 records
Teambox competitors and assessment
Company assessmentRegional players
- Atrae Inc. (Wevox): Japanese HR-tech firm operating the Wevox employee engagement platform; partner of Teambox for joint events and adjacent in the Japan-based organizational culture / employee engagement space.
Direct peers
- Link and Motivation Inc. Tokyo-listed Japanese consulting firm providing motivation/engagement surveys and organizational transformation services; directly comparable in the Japanese enterprise organizational development space.
- Center for Creative Leadership: Global non-profit specializing in leadership education and research; directly comparable methodology-driven leadership development focus and enterprise buyer profile.
- People Focus Consulting: Japanese consulting firm focused on organizational development and leadership training using its proprietary methodology; comparable specialist positioning versus large generalist consultancies.
- Satori Consulting: Japanese consulting firm specializing in organizational development and management consulting using a proprietary motivation-style framework; comparable enterprise consulting and culture change positioning to Teambox.
- Dale Carnegie Training Japan: Long-established Japan-based corporate training provider specializing in leadership, communication, and management development programs; directly comparable to Teambox's enterprise training offerings.
- DDI (Development Dimensions International): Global leadership development firm offering evidence-based leadership training, selection, and succession solutions; directly comparable in enterprise leadership training methodology and target buyer.
- FranklinCovey Japan: FranklinCovey operates in Japan delivering proprietary leadership/management training methodologies (e.g., 7 Habits, Leader in Me) to enterprise clients, directly competing with Teambox LEAGUE and TAO programs in the same Japanese corporate training market.
Broad incumbents
- Korn Ferry: Global organizational consulting firm with substantial leadership development and executive coaching practices; broader portfolio than Teambox but overlapping in the leadership training category for large enterprise clients.
- Japan Management Association (JMA / JMAC): Established Japanese management training and publishing institution offering executive education, training programs, and management publications; broader portfolio but overlapping in corporate leadership training.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Teambox social profiles
Digital presenceTeambox financial estimates
Financial estimateRevenue estimate
Valuation estimate
Teambox leadership team
Management profileNumber of profiles
Profiles3 records
Teambox funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Teambox M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Teambox
What does Teambox do?
Teambox designs and delivers customized, multi-month corporate leadership development and organizational culture transformation programs for Japanese enterprises, combining Adult Development Theory-based curriculum with dedicated Growth Trainer (グローストレーナー) accompaniment, outdoor experiential training, group sessions, and 1on1 coaching. Its product portfolio includes Teambox LEAGUE (continuous leadership training), Teambox TAO and TAO CLASS (women's leadership development), Reborn Camp (outdoor leadership philosophy), Teambox DIALOG (manager 1on1 training), Teambox OS (Z-generation development), CLO (Chief Learning Officer) program, and Teambox Space (subscription-based virtual focus coaching). The company serves more than 150 Japanese corporations including Recruit, Itochu Marubeni Steel, Omron Healthcare, Japan Tobacco, Hokto, Money Forward, IDOM, and the Saitama Seibu Lions.
Is Teambox a public or private company?
Teambox is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Teambox founded?
Teambox was founded in 2014.
Where is Teambox based?
Teambox is headquartered in Tokyo, Japan, in the Asia region.
How does Teambox make money?
Three revenue lines are on record. Leadership Development Training Programs are the primary driver. The others are teambox Space Subscription and organizational Development Consulting.
Who are Teambox's main competitors?
Atrae Inc. (Wevox) is listed as a regional player. Direct peers are Link and Motivation Inc., Center for Creative Leadership, People Focus Consulting, Satori Consulting, Dale Carnegie Training Japan, DDI (Development Dimensions International) and FranklinCovey Japan. Broad incumbents are Korn Ferry and Japan Management Association (JMA / JMAC).
Does Teambox have an API?
No public API is recorded for Teambox.
What industry is Teambox in?
Teambox's product category is Corporate Leadership Development Training. Its primary akta.pro industry code is EDABAAAH, Team Leadership & High-Performance Teams, with a secondary code of BPACANAA, Corporate & Leadership Development. Its NAICS code is 611430.