Ribbon Executive and Leadership Team

Rick Marmurek, the Executive Vice President, Chief Financial Officer & Chief Accounting Officer at Ribbon, directs all financial operations and accounting practices. Marmurek oversees the fiscal health and strategic financial planning for the company's global delivery of communications software, IP, and optical networking solutions. This critical role involves managing financial reporting, budgeting, and capital allocation to support network modernization initiatives for service providers, enterprises, and critical infrastructure sectors worldwide. The Chief Financial Officer ensures robust financial controls and compliance, underpinning Ribbon's commitment to innovation and its market position. Marmurek's financial stewardship guides investments in cloud-native offers, leading-edge security, analytics tools, and 5G-related networking solutions. Rick Marmurek's financial acumen is essential for driving sustainable business outcomes, managing investor relations, and upholding the company's dedication to Environmental, Social, and Governance (ESG) matters, including the transparent reporting of its annual Sustainability Report.

Sam Bucci, the Chief Operating Officer at Ribbon, directs global operational execution and service delivery. Overseeing the company's day-to-day activities, Bucci ensures the seamless integration of Ribbon's software, IP, and optical networking solutions across service provider, enterprise, and critical infrastructure markets. This leadership role involves optimizing network modernization efforts for clients, directly impacting their competitive positioning and business outcomes in an always-on, data-intensive world. Bucci drives efficiency across core to edge software-centric solutions and cloud-native offers, ensuring these innovative, end-to-end portfolios deliver unparalleled scale, performance, and agility. The Chief Operating Officer's focus extends to maintaining robust operational frameworks that support leading-edge security and analytics tools, alongside the deployment of IP and optical networking solutions critical for 5G advancements. Sam Bucci's operational oversight is fundamental to Ribbon's commitment to delivering advanced communication technologies and achieving strategic growth objectives.

Leon Tylevich, the President, Ribbon Electrical Engineering at Ribbon, directs the strategic development and operational execution of the company's electrical engineering initiatives. Tylevich oversees the design, integration, and performance of electrical components and systems integral to Ribbon's communications software, IP, and optical networking solutions. This leadership function is critical for ensuring the reliability, scalability, and efficiency of products deployed across service provider, enterprise, and critical infrastructure markets globally. The President of Ribbon Electrical Engineering focuses on advancing hardware innovation, supporting the company's commitment to delivering unparalleled scale and performance in areas such as 5G networking. Tylevich's expertise drives the engineering excellence required for cloud-native offers and robust security features. Leon Tylevich's oversight ensures that Ribbon's electrical engineering capabilities consistently meet the evolving demands of modern, data-hungry networks, directly contributing to the company's technological leadership and market success.

Scott Maggiolo, the Chief Information Officer at Ribbon, architects and manages the company's global information technology infrastructure and strategy. Maggiolo ensures that Ribbon's internal systems and digital platforms effectively support the delivery of advanced communications software, IP, and optical networking solutions to a worldwide client base. This involves driving the technological backbone that enables network modernization for service providers, enterprises, and critical infrastructure sectors. The Chief Information Officer's responsibilities include enhancing cybersecurity measures, optimizing data analytics capabilities, and ensuring the scalability and reliability of cloud-native offers. Maggiolo's leadership ensures that IT operations align with Ribbon's commitment to innovation, supporting the development and deployment of solutions for 5G and beyond. Scott Maggiolo's strategic IT direction is crucial for maintaining operational efficiency and fostering the agility required to meet the demands of a data-hungry world, directly contributing to the company's competitive edge and business success.

Sigal Tabak, the Chief Technology Officer, EA & Ipr Administrator at Ribbon, spearheads the company's technological vision and intellectual property strategy. Tabak guides the research, development, and implementation of Ribbon's cutting-edge communications software, IP, and optical networking solutions. This leadership position is central to advancing network modernization for global service providers, enterprises, and critical infrastructure clients, ensuring their competitive advantage in a data-driven landscape. The Chief Technology Officer's mandate includes fostering innovation across core to edge software-centric solutions, cloud-native offers, and advanced security and analytics tools. Tabak also manages the Intellectual Property Rights (IPR) administration, safeguarding Ribbon's technological innovations. Sigal Tabak's technical direction is pivotal for the development of next-generation IP and optical networking solutions, particularly those enabling 5G capabilities. This role ensures Ribbon remains at the forefront of technological advancement, delivering unparalleled scale, performance, and agility to its customers.

Joni Roberts, the Chief Marketing Officer, Investor Relations at Ribbon, leads the company's global marketing strategies and manages communications with the investment community. Roberts drives brand positioning and market engagement for Ribbon's comprehensive portfolio of communications software, IP, and optical networking solutions. This role is crucial for articulating the value proposition of network modernization to service providers, enterprises, and critical infrastructure sectors worldwide, highlighting improved competitive positioning and business outcomes. The Chief Marketing Officer oversees demand generation, product marketing, and corporate communications, ensuring a consistent and compelling message across all channels. Roberts' responsibilities also encompass managing investor relations, providing transparent updates on company performance, strategic initiatives, and financial outlook. Joni Roberts' integrated approach to marketing and investor relations is vital for enhancing Ribbon's market presence, attracting investment, and supporting the company's growth in the dynamic telecommunications and networking sectors.