Leon de Bruyn
President and Chief Executive Officer
Leon joined Lummus in 1993. During this career with the company, he has built executive experience in the downstream refining and petrochemicals industry, through technology development and licensing, catalyst supply and engineering, procurement and construction activities.
Prior to his current role as CEO, Leon led the transformation of the Lummus Technology business from a subsidiary of McDermott International to a standalone company under the ownership of The Chatterjee Group and Rhône Capital.
Previously, he was Managing Director of Chevron Lummus Global, a joint venture with Chevron, where he was responsible for the company strategy, P&L, sales and operations for the supply of technologies, engineering services and catalysts to refineries.
Leon holds a master’s degree in business administration from Duke University’s Fuqua School of Business, and a master’s degree in chemical engineering from Eindhoven University for Technology in The Netherlands. He has lived and worked in eight countries.
Edosa Obayagbona
Executive Vice President and Chief Financial Officer
Obayagbona brings a wealth of experience and global leadership in financial management, capital markets, strategy and risk management. Most recently, he served as the CFO for Univation Technologies, a fully owned subsidiary of Dow Inc. (Dow).
Prior to Univation, Obayagbona served as CFO for Dow Latin America, Managing Director for Dow West Africa and CFO for the Dow India sub-continent region. He also served on the boards of directors for several of Dow’s joint ventures/portfolio companies. Before joining Dow, Obayagbona held global leadership roles of increasing responsibility in financial management at Koch Industries Inc.
Obayagbona holds a master’s degree in business administration from Clark Atlanta University in Atlanta, Georgia, and a bachelor’s degree in chemical engineering from London South Bank University in London, United Kingdom. He is also a Chartered Financial Analyst (CFA).
Norby 'Buck' Foss
Chief Legal Officer
Foss has more than 25 years of legal experience. Prior to his current role, he served as General Counsel for McDermott’s Lummus Technology business. He also served as CB&I’s Chief Intellectual Property Counsel, where he managed IP for all CB&I companies, negotiated and performed legal functions for all investment and divestment of intellectual property assets.
Foss is licensed to practice law in Illinois, New Jersey, Texas and before the United States Patent and Trademark Office. Prior to his legal career he served as an officer in the U.S. Navy.
He holds a bachelor’s degree in chemical engineering from Rice University in Houston, Texas, and a juris doctor from Chicago-Kent School of Law in Chicago, Illinois.
Ajay Gami
Chief Commercial Officer
Ajay Gami is Lummus' Chief Commercial Officer. In this role, Gami is responsible for leading all aspects of sales, business development and portfolio expansion for the company. This includes developing and implmenting commerical strategy, growing the company's revenue, leading the global sales organization and overseeing investment, partnership and acquisition opportunities. Prior to this role, he served as Lummus' Chief Development Officer.
Gami spent nearly 30 years with Lummus, from 1990 to 2018. During this time, he served in several technical and commercial roles and developed a deep understanding of Lummus’ technology portfolio. Prior to rejoining Lummus in 2022, Gami served as a Director and Board Member of INEOS U.S. Chemicals Co. where he was responsible for developing long-term business growth strategies focusing on potential collaborations, mergers and acquisitions.
He holds a master’s degree in business administration from Rutgers University, a master’s degree in chemical engineering from the New Jersey Institute of Technology, and a bachelor’s degree in chemical engineering from the University of Baroda. He is also a registered professional engineer in Pennsylvania and holds three U.S. patents.
Deepak Martin
Chief Human Resources Officer
Deepak Martin was named Chief Human Resources Officer for Lummus Technology in 2024. In this role, he is responsible for leading all aspects of Lummus' human resources, including talent management, global human resources operations, recruiting, learning and development, and compensation and benefits.
Martin has extensive global experience in talent management, culture transformation and organizational design. Prior to Lummus, he led human resources for the Dover Corporation's Clean Energy & Fueling segment, which included support for 6,000 employees in 30 countries.
Throughout his career, Martin has served in human resources leadership roles around the world and has gained experience integrating organizational culture, processes and systems, and designing people strategies to match business objectives and plans.
Martin holds a bachelor's degree from Baldwin Methodist College, and a master's degree in business administration and human resources from the University of Wales.
Ujjal Mukherjee
Chief Technology Officer
Prior to being appointed CTO, Mukherjee served as Vice President and Managing Director of Chevron Lummus Global, a joint venture between Chevron and Lummus. He began his career with Lummus in 1990, and has developed expertise in clean fuels, petrochemicals and emerging technologies. He has 49 issued U.S. patents and many of the processes he invented have been successfully commercialized, including LC-MAX technology and integrated hydrocracking.
Mukherjee holds a bachelor’s degree in Chemical Engineering from National Institute of Technology in India, a master’s degree in Chemical and Petroleum Engineering from ENSPM in France, and a master’s degree in business administration from Rutgers University in the U.S.
Helion Sardina
Senior Vice President of Emerging Technologies
Through a series of positions with increasing responsibilities, he has developed functional expertise in technology evaluation, operations, sales and marketing, contracting, strategic planning, negotiating skills and general management. His previous roles included Vice President, Operations and Vice President, Petrochemicals Business Group.
Sardina holds a master’s degree in chemical engineering from the New Jersey Institute of Technology. He also holds two patents for Lummus technologies.
Romain Lemoine
Chief Business Officer, Polymers and Petrochemicals
During his career, Lemoine has established expertise in distillation, reaction engineering, optimization, technology development and commercialization, and several other areas that have allowed him to ascend to roles of increasing importance and responsibility.
Lemoine spent eight years with Lummus, where he focused primarily on research and development, technology development and commercialization. He also held various R&D roles at ExxonMobil Chemical, Rentech and Sasol. Prior to rejoining Lummus in 2022, Lemoine served as Executive Vice President of Technology and Technology Support at Axens.
Lemoine holds a Doctor of Philosophy degree in chemical engineering from the University of Pittsburgh and a diplome d’ingenieur in chemical engineering from ENSCL in France.
Rutger Theunissen
Chief Business Officer, Services and Supplies
Theunissen has nearly 30 years of industry experience where he has held management roles of increasing responsibility and importance.
Prior to his current role, he led Lummus’ business that designs and supplies ethylene furnaces, refinery heaters and specialized heat exchangers for the downstream processing industry.
Theunissen holds a master’s degree in chemical engineering from Delft University of Technology in The Netherlands, and a master’s degree in business administration from INSEAD Business School in France.
Ron Venner
Chief Business Officer, Clean Fuels
Venner has 45 years of experience in process engineering, technology licensing, sales and marketing.
Prior to his current role, he led Lummus’ petrochemicals business, which included CATOFIN, ethylbenzene, styrene, butadiene extraction, cumene, phenol, paraxylene and carbonates technologies.
He holds a bachelor’s degree in chemistry and a master’s degree in chemical engineering from Manhattan College.