Assembly Executive and Leadership Team

July, 2026

Leadership Overview

Assembly has 10 executives leading key functions including operations, finance, technology, revenue, marketing, and regional leadership.

Driven by data and talent, Assembly is dedicated to empowering brands through integrated omnichannel marketing solutions, fostering performance and growth across global markets.

Leadership Roles at Assembly

  • Chief Executive Officer, Assembly (APAC) - Richard Brosgill
  • Executive Business Partner To Global Chief Executive Officer, Chief Marketing Officer, and CSO and North America Chief Executive Officer and Admin Services Manager, North America - Ngoc Ma
  • Chief Executive Officer, Southeast (Asia) - Taka Osaki
  • Chief Financial Officer - Ryan Greene
  • Chief Operating Officer - Zubair Siddiqui
  • Co-Founder & Chief Technology Officer - Muthu Rg
  • Chief Revenue Officer, UX - Reynolds Sharp
  • Senior Chief Revenue Officer & Specialist - Aman Azhaan
  • Global Chief Marketing Officer - Mary Werkmeister
  • Chief Revenue Officer & Specialist - Bharathiraj Karuppagounder
  • Richard Brosgill - Chief Executive Officer, Assembly (APAC)

    Richard Brosgill, the Chief Executive Officer, Assembly (APAC) at Assembly, leads the strategic vision and operational execution for the Asia-Pacific region. Overseeing all business functions within APAC, Richard Brosgill drives market expansion and client success across diverse territories. This executive role involves tailoring Assembly's global omnichannel marketing and media solutions to meet the specific needs and nuances of the APAC market. The Chief Executive Officer, Assembly (APAC)'s responsibilities include fostering strong regional leadership, building strategic partnerships, and ensuring the effective deployment of data, technology, and talent to achieve performance and growth objectives. By cultivating a deep understanding of regional dynamics, Richard Brosgill ensures that Assembly delivers impactful, integrated solutions that resonate with local brands and consumers. The Chief Executive Officer, Assembly (APAC)'s leadership is pivotal for strengthening Assembly's presence and impact throughout the Asia-Pacific region.

    Ngoc Ma - Executive Business Partner To Global Chief Executive Officer, Chief Marketing Officer, and CSO and North America Chief Executive Officer and Admin Services Manager, North America

    Ngoc Ma, the Executive Business Partner To Global Chief Executive Officer, Chief Marketing Officer, and CSO and North America Chief Executive Officer and Admin Services Manager, North America at Assembly, provides critical operational and administrative support across key executive functions. Overseeing administrative services for North America leadership, Ngoc Ma ensures the smooth execution of daily operations for the Global Chief Executive Officer, Chief Marketing Officer, Chief Strategy Officer, and North America Chief Executive Officer. This multifaceted role involves managing complex schedules, coordinating high-level meetings, and facilitating communication between executive teams and broader organizational units. The Executive Business Partner's efficiency and organizational prowess are vital for enabling these leaders to focus on strategic initiatives and drive performance across the agency. By streamlining administrative processes and providing dedicated executive support, Ngoc Ma directly contributes to the operational effectiveness and strategic momentum of Assembly's leadership in North America and globally.
    Ngoc Ma

    Taka Osaki - Chief Executive Officer, Southeast (Asia)

    Taka Osaki, the Chief Executive Officer, Southeast (Asia) at Assembly, leads the strategic direction and operational oversight for the Southeast Asian market. Overseeing all business activities within this dynamic region, Taka Osaki drives Assembly's performance and growth objectives by adapting global strategies to local market conditions. This executive position involves cultivating client relationships, expanding the agency's service offerings, and ensuring the effective integration of data, technology, and talent to meet regional demands. The Chief Executive Officer, Southeast (Asia)'s focus extends to building and empowering local teams, fostering a culture of innovation, and navigating the unique business landscape of Southeast Asia. By championing Assembly's omnichannel marketing and media solutions, Taka Osaki directly contributes to the agency's success and market penetration in this key growth area. The Chief Executive Officer, Southeast (Asia)'s leadership is instrumental in solidifying Assembly's presence and impact across Southeast Asia.

    Ryan Greene - Chief Financial Officer

    Ryan Greene, the Chief Financial Officer at Assembly, governs the financial strategy and fiscal health of the global marketing and media agency. Overseeing all financial operations, Ryan Greene ensures robust fiscal management, driving profitability and sustainable growth. This critical role involves strategic financial planning, budgeting, forecasting, and managing investment initiatives that align with Assembly's performance-driven objectives. The Chief Financial Officer's oversight extends to risk management and ensuring compliance across all financial dealings, safeguarding the company's assets and stakeholder interests. By providing insightful financial analysis and guidance, Ryan Greene directly supports executive decision-making, enabling the agency to navigate complex market dynamics and capitalize on opportunities for expansion. The Chief Financial Officer's leadership is integral to maintaining the agency's financial integrity and supporting its global operational scale.

    Zubair Siddiqui - Chief Operating Officer

    Zubair Siddiqui, the Chief Operating Officer at Assembly, directs the operational framework that underpins the agency's global service delivery. Overseeing day-to-day functions, Zubair Siddiqui ensures seamless integration of data, technology, and talent across all client engagements. This leadership role involves optimizing internal processes to enhance efficiency and scalability, directly supporting Assembly's mission to drive performance and growth for brands. The Chief Operating Officer's focus extends to managing cross-functional teams, fostering a culture of operational excellence, and ensuring that the agency's extensive capabilities are consistently leveraged to meet evolving market demands. By refining operational strategies, the Chief Operating Officer contributes significantly to the agency's ability to deliver impactful, integrated solutions worldwide.

    Muthu Rg - Co-Founder & Chief Technology Officer

    Muthu Rg, the Co-Founder & Chief Technology Officer at Assembly, architects the technological backbone that powers the agency's innovative marketing solutions. Overseeing all aspects of technology development and infrastructure, Muthu Rg ensures that Assembly leverages cutting-edge data and media platforms to deliver superior client outcomes. This leadership position involves driving technological strategy, managing the engineering teams, and fostering a culture of innovation to stay ahead of industry trends. The Chief Technology Officer's responsibilities include the integration of advanced analytics, AI, and automation tools to enhance campaign performance and client insights. By championing technological advancement, Muthu Rg directly contributes to Assembly's ability to combine data, technology, and talent effectively, solidifying the agency's position as a leader in omnichannel marketing. The Chief Technology Officer's vision is crucial for maintaining the agency's competitive edge.
    Muthu Rg

    Reynolds Sharp - Chief Revenue Officer, UX

    Reynolds Sharp, the Chief Revenue Officer, UX at Assembly, spearheads the revenue generation strategies with a distinct focus on user experience integration. Overseeing sales and business development efforts, Reynolds Sharp drives market penetration and client acquisition across Assembly's diverse service offerings. This role involves cultivating key client relationships and identifying new revenue streams that align with the agency's performance and growth mandate. The Chief Revenue Officer, UX's strategic direction ensures that revenue-generating activities are intrinsically linked to delivering exceptional user experiences, a critical component of modern marketing success. By optimizing the sales funnel and fostering cross-functional collaboration between revenue teams and UX specialists, Reynolds Sharp directly impacts the agency's financial performance and market standing. The Chief Revenue Officer, UX's leadership is vital for expanding Assembly's global reach and client portfolio.

    Aman Azhaan - Senior Chief Revenue Officer & Specialist

    Aman Azhaan, the Senior Chief Revenue Officer & Specialist at Assembly, drives significant revenue growth through specialized sales strategies and client engagement. Overseeing key revenue-generating initiatives, Aman Azhaan focuses on expanding Assembly's market share by identifying and securing high-value client partnerships. This leadership position involves developing and executing advanced sales methodologies, ensuring alignment with the agency's data-driven, performance-focused approach. The Senior Chief Revenue Officer & Specialist's expertise in specialized market segments allows for targeted client acquisition and retention, directly contributing to the company's overall financial objectives. By fostering strong client relationships and championing the agency's integrated solutions, Aman Azhaan plays a crucial role in translating market opportunities into tangible business results. The Senior Chief Revenue Officer & Specialist's strategic acumen is essential for sustained revenue expansion.

    Mary Werkmeister - Global Chief Marketing Officer

    Mary Werkmeister, the Global Chief Marketing Officer at Assembly, directs the overarching marketing strategy and brand positioning for the international agency. Overseeing all global marketing initiatives, Mary Werkmeister ensures that Assembly's brand message effectively communicates its value proposition in data, technology, and talent to drive performance and growth. This leadership role involves developing integrated campaigns, managing public relations, and enhancing the agency's digital presence across all markets. The Global Chief Marketing Officer's responsibilities include market research, competitive analysis, and identifying opportunities to elevate Assembly's profile among prospective clients and industry stakeholders. By crafting compelling narratives and executing strategic marketing plans, Mary Werkmeister directly supports business development efforts and strengthens the agency's reputation worldwide. The Global Chief Marketing Officer's vision is essential for building brand equity and driving market engagement.

    Bharathiraj Karuppagounder - Chief Revenue Officer & Specialist

    Bharathiraj Karuppagounder, the Chief Revenue Officer & Specialist at Assembly, drives revenue expansion through targeted sales strategies and deep market specialization. Overseeing critical revenue-generating functions, Bharathiraj Karuppagounder focuses on securing new business and nurturing client accounts within specific industry verticals. This role involves leveraging Assembly's integrated marketing capabilities to deliver measurable performance and growth for clients. The Chief Revenue Officer & Specialist's expertise in specialized areas allows for the development of tailored solutions that address unique client challenges and opportunities. By fostering strong client partnerships and demonstrating the tangible value of Assembly's data-driven approach, Bharathiraj Karuppagounder directly contributes to the agency's financial success and market leadership. The Chief Revenue Officer & Specialist's strategic focus is key to unlocking new revenue streams and enhancing client retention.

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    Frequently Asked Questions Regarding Assembly Top Executives and Leadership Team

    Who leads Assembly?
    Assembly is led by Richard Brosgill (Chief Executive Officer, Assembly (APAC)), along with executives such as Ngoc Ma (Executive Business Partner To Global Chief Executive Officer, Chief Marketing Officer, and CSO and North America Chief Executive Officer and Admin Services Manager, North America) and Taka Osaki (Chief Executive Officer, Southeast (Asia)).
    Who is part of Assembly’s executive team?
    The executive team of Assembly includes leaders such as Richard Brosgill (Chief Executive Officer, Assembly (APAC)), Ngoc Ma (Executive Business Partner To Global Chief Executive Officer, Chief Marketing Officer, and CSO and North America Chief Executive Officer and Admin Services Manager, North America), Taka Osaki (Chief Executive Officer, Southeast (Asia)) and other senior executives.
    How many executives does Assembly have?
    Assembly has 10 executives leading key business areas.
    What roles are included in Assembly’s leadership team?
    The leadership team of Assembly includes roles such as Chief Executive Officer, Assembly (APAC), Executive Business Partner To Global Chief Executive Officer, Chief Marketing Officer, and CSO and North America Chief Executive Officer and Admin Services Manager, North America, Chief Executive Officer, Southeast (Asia), Chief Financial Officer, Chief Operating Officer.