O'Brien Executive and Leadership Team

July, 2026

Leadership Overview

O'Brien has 4 executives leading key functions including strategy, finance, operations, and business management.

Driven by a legacy of innovation, O'Brien is dedicated to providing first-class glazing services, upholding a commitment to quality workmanship and exceptional customer experiences across Australia.

Leadership Roles at O'Brien

  • Chief Executive Officer - Ian Collinson
  • Chief Financial Officer - Isabella Susilowati
  • Manager, Business & Chief Financial Officer - Kerrie Gerlach
  • Chief Operating Officer - Datuk Satgunalingam
  • Ian Collinson - Chief Executive Officer

    Ian Collinson, the Chief Executive Officer at O'Brien, directs the company's overarching strategy and market positioning. Collinson guides O'Brien's continued leadership in automotive and home/business glass replacement, building upon the company's 95-year history. This executive ensures alignment with the global vision of the Belron® Group, fostering innovation and operational excellence across all Australian territories. Collinson's leadership focuses on maintaining O'Brien's status as a trusted brand, emphasizing the quality of employee workmanship and the delivery of superior customer service. The Chief Executive Officer oversees the strategic integration of new technologies and service enhancements, driving growth and solidifying O'Brien's market dominance. Ian Collinson is responsible for championing the company's core values and ensuring sustained success in a competitive landscape.

    Isabella Susilowati - Chief Financial Officer

    Isabella Susilowati, the Chief Financial Officer at O'Brien, manages all financial operations and strategic fiscal planning. Susilowati oversees budgeting, forecasting, and financial reporting, ensuring the company's fiscal health and supporting its expansion initiatives. This executive plays a critical role in optimizing financial performance and resource allocation across O'Brien's extensive service network throughout Australia. The Chief Financial Officer works closely with the Chief Executive Officer and other senior leaders to develop financial strategies that align with the company's long-term objectives and growth targets. Susilowati's responsibilities include managing investment opportunities, assessing financial risks, and ensuring compliance with all relevant financial regulations. Isabella Susilowati drives financial discipline and provides key insights to support operational decision-making and maintain O'Brien's strong market position.

    Kerrie Gerlach - Manager, Business & Chief Financial Officer

    Kerrie Gerlach, the Manager, Business & Chief Financial Officer at O'Brien, manages critical business functions and financial oversight. Gerlach supports strategic business development initiatives while also contributing to the company's financial management and reporting structures. This dual role ensures that business growth strategies are financially sound and effectively implemented across O'Brien's operations in Australia. The Manager, Business & Chief Financial Officer works to identify new market opportunities and optimize existing business processes for enhanced profitability and customer reach. Gerlach's responsibilities encompass both the strategic direction of business units and the meticulous oversight of financial performance, ensuring robust fiscal controls. Kerrie Gerlach's contribution is vital for balancing expansionary goals with financial prudence, reinforcing O'Brien's market leadership and trusted brand status.

    Datuk Satgunalingam - Chief Operating Officer

    Datuk Satgunalingam, the Chief Operating Officer at O'Brien, oversees the day-to-day operational execution and service delivery across Australia. Satgunalingam directs the company's extensive network of glazing services, ensuring efficiency, quality, and adherence to O'Brien's high standards. This executive is pivotal in managing supply chain logistics, workforce deployment, and operational process improvements to enhance customer satisfaction. The Chief Operating Officer collaborates with the finance and strategy teams to align operational capabilities with business objectives, driving productivity and cost-effectiveness. Datuk Satgunalingam's focus includes implementing best practices in field operations and technical services, ensuring seamless execution of automotive and home/business glass replacements. This leadership role is essential for maintaining O'Brien's reputation for first-class service and operational reliability.

    Explore Leadership Teams in Construction Management

    Frequently Asked Questions Regarding O'Brien Top Executives and Leadership Team

    Who leads O'Brien?
    O'Brien is led by Ian Collinson (Chief Executive Officer), along with executives such as Isabella Susilowati (Chief Financial Officer) and Kerrie Gerlach (Manager, Business & Chief Financial Officer).
    Who is part of O'Brien’s executive team?
    The executive team of O'Brien includes leaders such as Ian Collinson (Chief Executive Officer), Isabella Susilowati (Chief Financial Officer), Kerrie Gerlach (Manager, Business & Chief Financial Officer) and other senior executives.
    How many executives does O'Brien have?
    O'Brien has 4 executives leading key business areas.
    What roles are included in O'Brien’s leadership team?
    The leadership team of O'Brien includes roles such as Chief Executive Officer, Chief Financial Officer, Manager, Business & Chief Financial Officer, Chief Operating Officer.