Executive Management

D.G. Macpherson is Grainger’s Chairman of the Board, a role he has held since October 2017, and Chief Executive Officer, a position assumed in October 2016 at which time he was also appointed to the Board of Directors. He served as Chief Operating Officer for Grainger from August 2015 through September 2016.

Prior to these roles, Mr. Macpherson was Senior Vice President and Group President, Global Supply Chain and International, where he led the development of corporate strategy and continuous improvement, the global supply chain organization, the company’s single channel online business model and international operations in Asia and Europe. Prior to that, Mr. Macpherson was Senior Vice President and President, Global Supply Chain and Corporate Strategy.

Mr. Macpherson joined Grainger in 2008 from the Boston Consulting Group (BCG), where, from 2002-2008, he was Partner and Managing Director. In that capacity, he served as a consultant to Grainger on a number of strategic and operational efforts including availability improvement, pricing strategy, product line expansion and sales force effectiveness.

At BCG, Mr. Macpherson was a member of the Industrial Goods Leadership Team with strong experience in production systems and continuous improvement methodologies. Early in his career, he was an operations manager for Rain Bird Sprinkler Manufacturing Company and a test engineer with the U.S. Air Force.

Mr. Macpherson holds a bachelor’s degree from Stanford University and an MBA from Northwestern’s Kellogg Graduate School of Management.

Thomas B. Okray was named Senior Vice President and Chief Financial Officer in April 2018. His responsibilities include accounting and financial reporting, financial planning and analysis, financial shared services, internal audit, investor relations and treasury operations.

Mr. Okray joined Grainger from Advanced Auto Parts, where he served as Chief Financial Officer. Prior to that role, he held positions at Amazon, culminating in the role of Vice President of Finance, Global Customer Fulfillment.

For more than 20 years, Mr. Okray grew his career with General Motors, where he held positions of increasing responsibility within the United States and internationally, including serving 15 years abroad. At General Motors, he achieved the role of Chief Financial Officer, Global Product Development, Purchasing and Supply Chain. Early in his career, Mr. Okray was a design and development engineer for Exxon.

Mr. Okray holds a bachelor’s degree in chemical engineering from Michigan State University and an MBA from the University of Chicago.