James Stephenson

Chief Executive Officer at Promethean Particles

With an extensive background in chemical manufacturing and processing, James’ career spans both sides of the Atlantic. He worked for Dow Corning (now Dow) for more than 16 years in the UK and United States, where he became global product manager for its electronics and advanced materials business.

He also led an internal start-up for the development of silicon nanoparticle-based inks for printed electronics. Since then, he was the general manager/managing director for Polyone Corporation (now Avient) and the vice president, Global Business Development, at Carlisle Fluid Technologies.

In 2020, he joined Promethean Particles as CEO. He holds an M. Eng in chemical engineering from Swansea University and an MBA from Manchester Business School.

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