HASEKO Executive and Leadership Team

September, 2026

Leadership Overview

HASEKO has 8 executives leading key functions including construction management, condominium development, international expansion, and corporate strategy.

Focused on delivering high-quality residential infrastructure, HASEKO maintains a commitment to excellence in the Japanese housing market while driving sustainable growth through a vertically integrated business model across Asia and North America.

Leadership Roles at HASEKO

  • President & Representative Director - Satoshi Kumano
  • Senior Operating Officer - Toru Wakabayashi
  • Senior Operating Officer - Masahito Koizumi
  • Senior Operating Officer - Yoshifumi Sadanaga
  • Senior Operating Officer - Hirohito Tamura
  • Senior Operating Officer - Ryoichi Hamada
  • Senior Operating Officer - Syoji Naraoka
  • Senior Operating Officer - Tsunehisa Mitamura
  • Satoshi Kumano - President & Representative Director

    Satoshi Kumano, the President & Representative Director at HASEKO, directs the overall strategic vision and corporate governance of the organization. Kumano oversees the integration of all business units, from land acquisition to property maintenance, to ensure a unified market approach. By setting long-term objectives, the President & Representative Director drives the expansion of the condominium development model into new geographic regions. This leadership role involves representing the firm to shareholders and the public while maintaining the highest standards of corporate integrity. Satoshi Kumano also coordinates with the Board to evaluate major capital investments and strategic partnerships. Through the promotion of sustainable building practices, the President & Representative Director ensures the firm remains at the forefront of the construction industry. Kumano monitors global economic trends to guide the company through market volatility. By providing decisive leadership, the President & Representative Director secures the future growth and market dominance of the firm.
    Satoshi Kumano

    Toru Wakabayashi - Senior Operating Officer

    Toru Wakabayashi, the Senior Operating Officer at HASEKO, directs the core construction engineering divisions responsible for high-rise condominium projects. Wakabayashi oversees technical standards and quality control protocols across all domestic sites. By implementing advanced seismic safety technologies, the Senior Operating Officer ensures structural integrity meets rigorous national building codes. This leadership role involves coordinating with architectural teams to optimize floor plans for modern urban living. Through the management of large-scale construction workflows, Toru Wakabayashi drives operational efficiency and reduces project timelines. Wakabayashi maintains strict oversight of material procurement to ensure cost-effectiveness without compromising quality. The Senior Operating Officer also collaborates with regional project managers to standardize construction methodologies across the Japanese market. By prioritizing safety and precision, the Senior Operating Officer secures the reputation of the firm as a leader in residential development.

    Masahito Koizumi - Senior Operating Officer

    Masahito Koizumi, the Senior Operating Officer at HASEKO, manages the comprehensive sales and marketing strategies for new condominium developments. Koizumi directs market research initiatives to identify emerging housing trends in dense urban centers. By analyzing consumer demand, the Senior Operating Officer architects effective sales campaigns that maximize unit absorption rates. This leadership role involves managing relationships with real estate brokerage partners and internal sales teams to ensure consistent revenue growth. Masahito Koizumi also oversees the digital transformation of the customer experience, integrating virtual tours and online booking systems into the sales funnel. Through the alignment of marketing efforts with construction milestones, the Senior Operating Officer ensures seamless project handovers. Koizumi monitors regional market fluctuations to adjust pricing strategies dynamically. By optimizing the sales process, the Senior Operating Officer directly impacts the financial performance of the entire development portfolio.

    Yoshifumi Sadanaga - Senior Operating Officer

    Yoshifumi Sadanaga, the Senior Operating Officer at HASEKO, leads the maintenance and property management division for completed residential assets. Sadanaga oversees the lifecycle service model, ensuring long-term value for condominium owners through proactive facility upkeep. By directing maintenance teams, the Senior Operating Officer maintains high occupancy rates and asset appreciation across the portfolio. This leadership role involves managing complex service contracts and implementing energy-efficient upgrades for aging residential structures. Yoshifumi Sadanaga also coordinates with resident associations to address community needs and improve living standards. Through the application of predictive maintenance software, the Senior Operating Officer minimizes operational downtime and reduces repair costs. Sadanaga monitors service quality metrics to ensure alignment with corporate standards. By focusing on the post-construction phase, the Senior Operating Officer secures the long-term sustainability of the business model and fosters enduring relationships with property owners.

    Hirohito Tamura - Senior Operating Officer

    Hirohito Tamura, the Senior Operating Officer at HASEKO, manages international expansion efforts across North American markets. Tamura directs the acquisition of land and the development of residential projects outside of Japan. By navigating diverse regulatory environments, the Senior Operating Officer ensures compliance and operational success in foreign territories. This leadership role involves building local partnerships and adapting the Japanese construction model to suit international market preferences. Hirohito Tamura also oversees the integration of global supply chains to support overseas project requirements. Through the strategic deployment of capital, the Senior Operating Officer drives the diversification of the company revenue streams. Tamura monitors geopolitical and economic risks to protect international investments. By scaling operations beyond domestic borders, the Senior Operating Officer expands the global footprint of the firm and establishes a competitive presence in new residential sectors.

    Ryoichi Hamada - Senior Operating Officer

    Ryoichi Hamada, the Senior Operating Officer at HASEKO, directs the land acquisition and urban planning department. Hamada oversees the identification of prime development sites in high-growth metropolitan areas. By evaluating zoning laws and demographic shifts, the Senior Operating Officer secures land parcels that align with the long-term development pipeline. This leadership role involves negotiating complex land purchase agreements and managing relationships with municipal planning authorities. Ryoichi Hamada also coordinates with design teams to ensure that new developments maximize land utility and aesthetic appeal. Through the strategic assessment of urban density, the Senior Operating Officer optimizes the project portfolio for maximum return on investment. Hamada monitors land market trends to anticipate future development opportunities. By controlling the initial phase of the project lifecycle, the Senior Operating Officer establishes the foundation for successful condominium construction and sales.

    Syoji Naraoka - Senior Operating Officer

    Syoji Naraoka, the Senior Operating Officer at HASEKO, manages the corporate finance and capital allocation strategies. Naraoka directs the budgeting process for large-scale construction projects and ensures financial liquidity across all subsidiaries. By monitoring cash flow and debt levels, the Senior Operating Officer maintains the fiscal health required for continuous development. This leadership role involves coordinating with the Board to align financial goals with long-term growth objectives. Syoji Naraoka also oversees investor relations and ensures transparent reporting of financial performance to stakeholders. Through the implementation of rigorous cost-control measures, the Senior Operating Officer improves profit margins across the construction and sales divisions. Naraoka evaluates investment opportunities in new technologies to enhance operational efficiency. By managing the financial architecture of the firm, the Senior Operating Officer supports the stability and expansion of the entire business enterprise.

    Tsunehisa Mitamura - Senior Operating Officer

    Tsunehisa Mitamura, the Senior Operating Officer at HASEKO, leads the human resources and organizational development initiatives. Mitamura directs talent acquisition and training programs to ensure a skilled workforce for complex construction projects. By fostering a culture of safety and innovation, the Senior Operating Officer improves employee retention and productivity. This leadership role involves managing labor relations and ensuring compliance with workplace safety regulations. Tsunehisa Mitamura also oversees the implementation of performance management systems that align individual contributions with corporate goals. Through the development of leadership pipelines, the Senior Operating Officer prepares the next generation of managers for the firm. Mitamura monitors organizational health metrics to identify areas for improvement in internal communication and collaboration. By investing in human capital, the Senior Operating Officer strengthens the operational capacity of the company to execute large-scale residential projects.

    Explore Leadership Teams in Construction Management

    Frequently Asked Questions Regarding HASEKO Top Executives and Leadership Team

    Who leads HASEKO?
    HASEKO is led by Satoshi Kumano (President & Representative Director), along with executives such as Toru Wakabayashi (Senior Operating Officer) and Masahito Koizumi (Senior Operating Officer).
    Who is part of HASEKO’s executive team?
    The executive team of HASEKO includes leaders such as Satoshi Kumano (President & Representative Director), Toru Wakabayashi (Senior Operating Officer), Masahito Koizumi (Senior Operating Officer) and other senior executives.
    How many executives does HASEKO have?
    HASEKO has 8 executives leading key business areas.
    What roles are included in HASEKO’s leadership team?
    The leadership team of HASEKO includes roles such as President & Representative Director, Senior Operating Officer, Senior Operating Officer, Senior Operating Officer, Senior Operating Officer.