Strategic Consultant

Sheila Gruber McLean

[email protected]

Sheila Gruber McLean has extensive experience in social purpose, sustainability, issues management, public affairs, media, corporate reputation and advocacy for clients including UPS, the James Beard Foundation, the National Safety Council, Battelle, the Alliance of Automobile Manufacturers, P&G and GM.

Prior to joining Markstein, Sheila spent 17 years with MSL, serving as the North America Social Purpose and Sustainability practice director and as managing director of the Detroit office. She created integrated campaigns to drive behavior change, advance business and policy goals and deliver social impact for clients including The Allstate Foundation, American Public Power Association, RB and Nestlé.

Prior to joining MSL, Sheila led Safety and Environmental Affairs at Chrysler Corp. where she developed and launched an industry-leading child safety program. She also served as a communications officer for the C.S. Mott Foundation and a senior policy and external affairs advisor to Michigan Gov. John Engler.

Sheila started her career as a reporter, earning numerous awards at the Detroit News. Her work has repeatedly earned top honors from the Public Relations Society of America, Holmes Report, PR Week, PR News and the International Association of Business Communicators.

Sheila holds her bachelor’s degree in journalism from Central Michigan University.

CSR – Press Release

CSR – The Survey

Navigating A New Age of Activism Requires Corporate Purpose


Positioning Statement & Company Values

In a world in which no two business challenges are the same, Markstein blends art and science to craft custom solutions. Our insights-driven partnership model is built on extensive diagnosis, creative strategies and vigilant performance measurement. While our approach enables our partners to achieve their goals, our inspiration lies in the belief that helping solve complex problems, be it business, legislative or societal, can change the world for the better – one client at a time.


Insights-driven partnerships are rooted in our team’s intellectual curiosity. However, our quest for knowledge and insights comes with levity. Our “always learning” mindset is married with our “always lively” personality. We take our client objectives seriously without taking ourselves too seriously.


Our open-mindedness is about receptivity to new perspectives and thinking – the fundamental humility required to acknowledge no one has all the answers. Our success, both as an organization and a partner, is predicated on always looking for new and better ways.


A collective achiever mentality focuses on ensuring activity is not mistaken for productivity. And while we vigilantly pursue success for our clients and our company, our professional nourishment comes from doing good and having loftier objectives beyond prosperity. We are collectively committed to making a difference and enhancing a legacy of bettering our partners, our community and ourselves.

Birmingham, AL |

Washington, D.C. |


©2021 Markstein