SI Group Executive and Leadership Team

July, 2026

Leadership Overview

SI Group has 7 executives leading key functions including strategy, finance, information technology, marketing, and operations.

Driven by innovation, SI Group is dedicated to advancing chemical manufacturing through performance additives, process solutions, pharmaceutical ingredients, and chemical intermediates, impacting global markets with its specialized chemical expertise.

Leadership Roles at SI Group

  • Chief Executive Officer - Bella Le
  • President & Chief Executive Officer - David Bradley
  • President & Chief Executive Officer - John Steitz
  • Chief Financial Officer - Helio Ono
  • Senior Vice President & Chief Financial Officer - Rustom Jilla
  • Chief Information Officer - Mukund Devanathan
  • Chief Marketing Officer & Global Director, Business - Tri Nguyen
  • Bella Le - Chief Executive Officer

    Bella Le, the Chief Executive Officer at SI Group, directs the company's overarching strategy and operational execution. This leadership position involves guiding SI Group's global operations in performance additives, process solutions, pharmaceutical ingredients, and chemical intermediates. Bella Le ensures alignment with the company's long-standing mission of chemical innovation and market leadership. The focus remains on driving sustainable growth and enhancing shareholder value through strategic decision-making. This role demands a comprehensive understanding of the chemical manufacturing sector and its evolving demands. Bella Le oversees the integration of new technologies and market opportunities to maintain SI Group's competitive edge. The executive's responsibilities extend to fostering a culture of excellence and accountability across all departments. Strategic partnerships and global expansion initiatives fall under this executive's purview, ensuring SI Group's continued impact in the chemical industry.

    David Bradley - President & Chief Executive Officer

    David Bradley, the President & Chief Executive Officer at SI Group, spearheads the company's strategic direction and operational management. This executive guides SI Group's global presence in performance additives, process solutions, pharmaceutical ingredients, and chemical intermediates. David Bradley ensures the company's commitment to innovation and market leadership is upheld. The primary objective is to drive sustainable growth and maximize stakeholder value through astute strategic planning. This critical role requires deep insight into the chemical manufacturing landscape and its dynamic requirements. David Bradley champions the adoption of advanced technologies and the pursuit of emerging market opportunities, solidifying SI Group's competitive advantage. The executive cultivates an environment of high performance and responsibility throughout the organization. Overseeing global expansion efforts and strategic alliances, David Bradley reinforces SI Group's significant influence within the chemical sector.

    John Steitz - President & Chief Executive Officer

    John Steitz, the President & Chief Executive Officer at SI Group, leads the company's strategic vision and operational framework. This executive guides SI Group's global activities in performance additives, process solutions, pharmaceutical ingredients, and chemical intermediates. John Steitz ensures the company's dedication to pioneering advancements and maintaining industry leadership. The core mandate involves fostering sustainable expansion and optimizing stakeholder returns through effective strategic initiatives. This pivotal position necessitates profound knowledge of the chemical manufacturing industry and its shifting dynamics. John Steitz promotes the integration of cutting-edge technologies and the exploration of new market avenues, reinforcing SI Group's market standing. The executive cultivates a culture of operational excellence and accountability across all business units. Directing international growth strategies and key collaborations, John Steitz solidifies SI Group's prominent role in the chemical industry.
    John Steitz

    Helio Ono - Chief Financial Officer

    Helio Ono, the Chief Financial Officer at SI Group, directs the company's financial strategy, planning, and reporting. This executive oversees all fiscal operations, including budgeting, forecasting, capital allocation, and financial risk management for SI Group's global chemical manufacturing business. Helio Ono ensures robust financial controls and compliance with regulatory requirements across performance additives, process solutions, pharmaceutical ingredients, and chemical intermediates sectors. The primary responsibility involves providing strategic financial guidance to support sustainable growth, profitability, and shareholder value. This role demands meticulous analysis of financial performance and market trends to inform executive decision-making. Helio Ono manages relationships with financial institutions, investors, and auditors, maintaining the company's financial integrity. The executive's leadership ensures efficient resource deployment and optimizes the financial structure to support SI Group's long-term objectives and global expansion initiatives.

    Rustom Jilla - Senior Vice President & Chief Financial Officer

    Rustom Jilla, the Senior Vice President & Chief Financial Officer at SI Group, manages the company's financial health and strategic fiscal planning. This executive oversees financial reporting, accounting operations, treasury functions, and internal controls for SI Group's global chemical manufacturing enterprise. Rustom Jilla provides critical financial insights to support executive decision-making regarding performance additives, process solutions, pharmaceutical ingredients, and chemical intermediates. The role emphasizes optimizing financial performance, managing capital structure, and mitigating financial risks across international markets. This position requires a deep understanding of global financial regulations and market dynamics to ensure compliance and drive profitability. Rustom Jilla collaborates with the Chief Financial Officer and other senior leaders to develop long-term financial strategies and investment plans. The executive's oversight ensures the efficient allocation of resources to support SI Group's growth objectives and operational excellence.

    Mukund Devanathan - Chief Information Officer

    Mukund Devanathan, the Chief Information Officer at SI Group, architects the company's technology strategy and digital transformation initiatives. This leadership role involves overseeing all aspects of information technology infrastructure, cybersecurity, and data management to support SI Group's global operations in chemical manufacturing. Mukund Devanathan ensures that technology solutions enhance operational efficiency, drive innovation in performance additives and process solutions, and safeguard sensitive company data. The focus is on leveraging digital tools to optimize supply chains, improve customer engagement, and support the development of pharmaceutical ingredients and chemical intermediates. This executive drives the implementation of advanced analytics and enterprise resource planning systems to provide actionable insights for business leaders. Mukund Devanathan collaborates closely with other C-suite executives to align IT investments with strategic business objectives, ensuring technology acts as a catalyst for growth and competitive advantage across all global markets.
    Mukund Devanathan

    Tri Nguyen - Chief Marketing Officer & Global Director, Business

    Tri Nguyen, the Chief Marketing Officer & Global Director, Business at SI Group, drives global marketing strategies and business development initiatives. This executive leads market analysis, brand management, product positioning, and customer engagement across SI Group's diverse portfolio of performance additives, process solutions, pharmaceutical ingredients, and chemical intermediates. Tri Nguyen is responsible for identifying new market opportunities, expanding global reach, and enhancing the company's competitive positioning within the chemical manufacturing industry. The focus is on developing integrated marketing campaigns that communicate the value proposition of SI Group's specialized chemical solutions to target audiences worldwide. This leadership role involves close collaboration with sales, R&D, and operations teams to ensure market insights inform product development and business strategy. Tri Nguyen oversees the global sales force and business unit performance, driving revenue growth and market share expansion.

    Frequently Asked Questions Regarding SI Group Top Executives and Leadership Team

    Who leads SI Group?
    SI Group is led by Bella Le (Chief Executive Officer), along with executives such as David Bradley (President & Chief Executive Officer) and John Steitz (President & Chief Executive Officer).
    Who is part of SI Group’s executive team?
    The executive team of SI Group includes leaders such as Bella Le (Chief Executive Officer), David Bradley (President & Chief Executive Officer), John Steitz (President & Chief Executive Officer) and other senior executives.
    How many executives does SI Group have?
    SI Group has 7 executives leading key business areas.
    What roles are included in SI Group’s leadership team?
    The leadership team of SI Group includes roles such as Chief Executive Officer, President & Chief Executive Officer, President & Chief Executive Officer, Chief Financial Officer, Senior Vice President & Chief Financial Officer.