ASELSAN Executive and Leadership Team

June, 2026

Leadership Overview

ASELSAN has 6 executives leading key functions including strategy, information technology, finance, and operations.

Driven by indigenous product development, ASELSAN is dedicated to advancing defense electronics and exporting its innovations globally, solidifying its position as a leader in the defense industry.

Leadership Roles at ASELSAN

  • Chief Executive Officer - Musa Reyis
  • Group Chief Executive Officer - Sim Song
  • Chief Financial Officer - Mehlika Sayin
  • Vice President, Chief Financial Officer - Nuh Yılmaz
  • Chief Information Officer - Fatih Çoban
  • Chief of Staff and ÖZel Kalem Müdürü - Nanç Koyuncu
  • Musa Reyis - Chief Executive Officer

    Musa Reyis, the Chief Executive Officer at ASELSAN, directs the company's overall strategic vision and operational execution. Overseeing all major business units, Reyis ensures alignment with ASELSAN's mission to develop and export advanced defense electronics. This leadership role involves driving innovation across the organization and maintaining the company's competitive edge in the global market. By fostering a culture of technological excellence, Musa Reyis guides ASELSAN's expansion into new territories and product lines. The Chief Executive Officer's focus remains on enhancing indigenous capabilities and strengthening the company's export performance, directly contributing to its status as a key defense contractor. Reyis's strategic direction ensures robust growth and sustained market leadership for ASELSAN.

    Sim Song - Group Chief Executive Officer

    Sim Song, the Group Chief Executive Officer at ASELSAN, spearheads the strategic direction and comprehensive management of the company's diverse business groups. Song's mandate includes optimizing group-wide performance and ensuring synergistic collaboration among various divisions. This executive position involves driving the company's global expansion initiatives and reinforcing its reputation as a premier defense electronics exporter. By cultivating strong international partnerships, Sim Song enhances ASELSAN's market penetration and secures new business opportunities. The Group Chief Executive Officer's leadership is critical in navigating complex geopolitical landscapes and adapting to evolving defense technology demands. Song's strategic oversight guarantees the continued development of indigenous capabilities and the successful delivery of advanced solutions to a global clientele.

    Mehlika Sayin - Chief Financial Officer

    Mehlika Sayin, the Chief Financial Officer at ASELSAN, directs all financial planning, management, and reporting activities for the organization. Sayin's oversight includes managing budgets, optimizing financial performance, and ensuring compliance with international financial regulations, vital for ASELSAN's status as an indigenous products exporting company. This executive function involves developing robust financial strategies to support growth and investment in research and development. By meticulously managing capital allocation, Mehlika Sayin ensures the company's financial stability and its capacity to undertake large-scale defense projects. The Chief Financial Officer's expertise is critical in navigating global markets and securing favorable financial terms for export contracts. Sayin's leadership guarantees fiscal discipline and drives profitability.
    Mehlika Sayin

    Nuh Yılmaz - Vice President, Chief Financial Officer

    Nuh Yılmaz, the Vice President, Chief Financial Officer at ASELSAN, collaborates with the Chief Financial Officer to manage the company's financial health and strategic fiscal planning. Yılmaz's responsibilities include supporting financial analysis, forecasting, and the implementation of financial controls critical for ASELSAN's global export operations. This role involves contributing to the development of financial models that underpin investment decisions and operational efficiency. By ensuring accurate financial reporting and compliance, Nuh Yılmaz reinforces the integrity of ASELSAN's financial operations. The Vice President, Chief Financial Officer's focus on fiscal prudence supports the company's long-term sustainability and its ability to fund ambitious research and development projects. Yılmaz's contributions are vital to maintaining financial transparency and driving economic performance.

    Fatih Çoban - Chief Information Officer

    Fatih Çoban, the Chief Information Officer at ASELSAN, architects and manages the company's entire information technology infrastructure and digital strategy. Çoban's responsibilities encompass ensuring the security, efficiency, and scalability of all IT systems, which are crucial for ASELSAN's defense electronics operations and export activities. This role involves implementing cutting-edge technologies to support research, development, and production processes. By driving digital transformation initiatives, Fatih Çoban enhances operational agility and data integrity across the organization. The Chief Information Officer's leadership ensures that ASELSAN maintains a robust technological backbone, enabling seamless communication and advanced data management. Çoban's strategic vision for IT directly supports the company's mission of innovation and global competitiveness.

    Nanç Koyuncu - Chief of Staff and ÖZel Kalem Müdürü

    Nanç Koyuncu, the Chief of Staff and ÖZel Kalem Müdürü at ASELSAN, provides strategic support and operational coordination directly to the executive leadership. Koyuncu's role involves managing key initiatives, facilitating communication across departments, and ensuring the efficient execution of executive directives, which is essential for ASELSAN's defense electronics operations. This position requires a deep understanding of the company's strategic priorities and the ability to translate them into actionable plans. By streamlining executive workflows and managing critical projects, Nanç Koyuncu enhances organizational efficiency and responsiveness. The Chief of Staff's influence extends to optimizing resource allocation and ensuring seamless collaboration between different business units. Koyuncu's dedicated support enables the executive team to focus on strategic growth and innovation.

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    Frequently Asked Questions Regarding ASELSAN Top Executives and Leadership Team

    Who leads ASELSAN?
    ASELSAN is led by Musa Reyis (Chief Executive Officer), along with executives such as Sim Song (Group Chief Executive Officer) and Mehlika Sayin (Chief Financial Officer).
    Who is part of ASELSAN’s executive team?
    The executive team of ASELSAN includes leaders such as Musa Reyis (Chief Executive Officer), Sim Song (Group Chief Executive Officer), Mehlika Sayin (Chief Financial Officer) and other senior executives.
    How many executives does ASELSAN have?
    ASELSAN has 6 executives leading key business areas.
    What roles are included in ASELSAN’s leadership team?
    The leadership team of ASELSAN includes roles such as Chief Executive Officer, Group Chief Executive Officer, Chief Financial Officer, Vice President, Chief Financial Officer, Chief Information Officer.