Back to

Brett Grehan

Senior Partner, Sydney
Combines broad cross-sector experience with deep expertise in marketing and strategy to help clients transform global marketing and sales organizations

About Brett

Brett’s experience  across a wide range of sectors and geographies enables him to draw on a broad network. He brings a wide range of skills and experience to bear, whether it’s transforming a global sales and marketing team into a leading organization for a European client or rethinking an organizational design in the US.

He is experienced at developing strategic insights, having led more than twenty strategy and growth engagements, and working deep inside the organization, where he has collaborated closely with C-suite executives to build teams and capabilities. He’s also helped numerous private equity players and served clients on a range of organizational issues from redesigning organizational structures to improve operational effectiveness to both post-merger and talent management.

Brett’s clients in the US, Europe, and India include companies in fast-moving consumer goods, steel, logistics, distribution, financial institutions, pharmaceuticals, and energy.

Published work

Building marketing and sales capabilities to beat the market,” McKinsey & Company, March 2015

The marketing organization of the future,” McKinsey on Marketing & Sales, December 2012

The modern consumer: How to differentiate products for the Baby Boomers,” McKinsey on Marketing & Sales, October 2011


The Wharton School
MBA with distinction in Public Policy, Finance (Palmer Scholar)

University of Sydney
BE in Electrical Engineering