Theo Jan Simons

Works with petrochemicals and downstream companies on strategy and portfolio management, performance transformation, M&A, and growth, and leads McKinsey's Chemicals Insight and plastics recycling initiatives.

About Theo Jan

Theo Jan leads our petrochemicals work globally. For more than twenty years, he has offered consulting support to a broad range of companies in the chemicals and energy sectors. He also leads McKinsey on Chemicals, McKinsey's publication series that explores the changing chemicals landscape.

Keenly interested in understanding industry dynamics, TJ is the founder and coleader of Chemicals Insight. This advanced analytics team focuses on developing deep insights into petrochemicals markets and economics, including assessing cost curves, price-setting mechanisms, global trade flow, and regional value pools.

Recently, TJ also launched and leads McKinsey’s initiative on plastics recycling, and he currently advises companies and industry associations as they work toward a circular economy.

Before joining McKinsey, TJ was a partner at an international management consulting firm and a multinational professional services company. He spent his early career working in R&D, operations, and business development at a petrochemicals company in Europe and Asia.