This is a profile image of Alexander Klei

Alexander Klei

Senior Partner, Zurich

Leads our global Chemicals and Agriculture practices. Advises clients on growth and strategy topics, and supports them in executing large-scale transformations.

About Alexander

Alex leads our global Chemicals and Agriculture practices. He mostly advises chemicals, agriculture, materials, and industrial companies on growth and strategy, and supports them in executing large-scale transformations to improve performance. Previously, Alex led our global specialty-chemicals work, as well as our industrial-sector work in Switzerland. 

Alex is excited about technology, including but not limited to AI, and can often be found at industry events discussing recent developments.

Notable examples of Alex’s recent work include:

  • leading cross-functional transformations in the chemicals and materials industry to create substantial and enduring improvements in performance and health 
  • building long-term business-unit and corporate strategies for leaders in specialty chemicals, agriculture, and materials
  • redesigning and implementing new operating models, from organization and processes to people systems and cultural change
  • supporting industrial companies as they screen potential M&A targets, conduct due diligence, and facilitate synergy capture during post-merger integrations.

Alex joined McKinsey in 2008. He studied in the Netherlands, Singapore, Switzerland, and the United States.

Expertise

Published work

Climbing higher: Securing Switzerland’s competitiveness in a changing landscape,” McKinsey & Company, September 2026

Securing the competitiveness of the European chemical industry,” McKinsey & Company, February 2023

How green can green growth be?,” McKinsey & Company, July 2022

The role of the electric grid in Switzerland’s energy future,” McKinsey & Company, May 2021

Adapting your operating model to the new normal: The next big move,” McKinsey & Company, February 2021

A winning formula for specialty-chemical conglomerates,” McKinsey & Company, February 2021

Chemicals and capital markets: Refocusing on the fundamentals,” McKinsey & Company, December 2020

The state of the chemical industry—it is getting more complex,” McKinsey & Company, November 2020

Digital in chemicals: From technology to impact,” McKinsey & Company, July 2017

Education

Columbia University
MBA

University of St. Gallen Switzerland
MA, finance
BA, business administration

Erasmus University Rotterdam
MS, strategy