ASELSAN Executive and Leadership Team

July, 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 advancement, Musa Reyis guides ASELSAN's expansion into new territories and product lines. The Chief Executive Officer's focus remains on sustainable growth and enhancing the company's indigenous product capabilities. Reyis's strategic direction ensures ASELSAN continues its legacy as a key defense contractor and exporter.

    Sim Song - Group Chief Executive Officer

    Sim Song, the Group Chief Executive Officer at ASELSAN, spearheads the strategic direction and operational oversight for the entire group of companies. This executive manages the integration of diverse business units, ensuring synergistic growth and maximizing collective impact in the defense electronics sector. Song's responsibilities include identifying new market opportunities and strengthening ASELSAN's position as a leading indigenous products exporter. The Group Chief Executive Officer drives initiatives that enhance technological innovation and operational efficiency across all subsidiaries. By cultivating strong relationships with stakeholders and partners, Sim Song ensures the group's long-term viability and market leadership. Song's leadership focuses on expanding global reach and reinforcing ASELSAN's reputation for quality and reliability.

    Mehlika Sayin - Chief Financial Officer

    Mehlika Sayin, the Chief Financial Officer at ASELSAN, directs the company's financial planning, reporting, and fiscal management. Overseeing all financial operations, Sayin ensures robust financial health and compliance with international accounting standards, crucial for ASELSAN's global export activities. This executive manages budgeting, forecasting, and investment strategies, safeguarding the company's assets and optimizing resource allocation. By providing strategic financial insights, Mehlika Sayin supports informed decision-making across all departments, particularly in relation to large-scale defense projects and export financing. The Chief Financial Officer's primary objective is to enhance profitability and shareholder value while maintaining financial stability. Sayin's expertise is vital for navigating the complex financial landscape of the defense industry.
    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 extensive financial operations and strategic fiscal planning. This executive supports the oversight of budgeting, financial analysis, and risk management, ensuring ASELSAN's financial integrity and supporting its role as a major defense exporter. Yılmaz's responsibilities include contributing to the development of financial strategies that align with the company's growth objectives and operational demands. By ensuring accurate financial reporting and compliance, Nuh Yılmaz reinforces ASELSAN's credibility with international partners and investors. The Vice President, Chief Financial Officer plays a key part in optimizing financial performance and supporting the company's long-term sustainability. Yılmaz's efforts contribute to maintaining robust financial controls.

    Fatih Çoban - Chief Information Officer

    Fatih Çoban, the Chief Information Officer at ASELSAN, architects and manages the company's comprehensive information technology infrastructure and digital strategy. Overseeing all IT operations, Çoban ensures the secure and efficient deployment of technology solutions that support ASELSAN's defense electronics manufacturing and export activities. This critical role involves driving digital transformation initiatives, enhancing cybersecurity measures, and optimizing data management systems. By implementing cutting-edge IT strategies, Fatih Çoban enables greater operational agility and supports the company's research and development efforts. The Chief Information Officer's focus is on leveraging technology to streamline processes, improve internal communication, and bolster the company's competitive advantage in the global marketplace. Çoban's leadership ensures ASELSAN remains at the forefront of technological integration.

    Nanç Koyuncu - Chief of Staff and ÖZel Kalem Müdürü

    Nanç Koyuncu, the Chief of Staff and ÖZel Kalem Müdürü at ASELSAN, provides direct support to executive leadership, managing strategic initiatives and ensuring operational efficiency across key departments. This role involves coordinating high-level communications, overseeing special projects, and facilitating the smooth execution of the executive agenda, particularly concerning ASELSAN's defense electronics export operations. Koyuncu acts as a key liaison, bridging communication between different functional areas and ensuring strategic alignment with the company's overall mission. By managing critical administrative functions and driving special assignments, Nanç Koyuncu enhances the effectiveness of the executive team. The Chief of Staff and ÖZel Kalem Müdürü's focus is on optimizing workflow and supporting the strategic objectives of ASELSAN. Koyuncu's contributions are essential for maintaining organizational coherence and driving forward key corporate priorities.

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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.