Mark Butler graduated from Bowling Green State University in 1979.  

He joined Marathon Oil Company in 1981 in the Findlay, Ohio office as an Associate Employee Relations Representative.  During his 25 years with the Company, Mark has held a variety of positions within the human resources function.  In 2002, Mark was assigned to his current position as Manager of Diversity.   In this capacity, he’s responsible for the development and implementation of diversity initiatives that create an environment where the talents and differences of all employees are respected and valued for business success.

Over the last 5 years, he’s spoken to over 3,000 people from both inside and outside of his company.  He continues to speak on a national level and has been a presenter at the national conferences for the American Association for Affirmative Action, The National Conference Board and the Society for Human Resource Management.

Giselle is the Practice Lead in Optimus SBR’s Learning & Development Group with over 25 years experience as a sought after resource to industry leaders across the private, public, and not-for-profit sectors dedicated to building strategies and programs that help clients target, motivate and engage employees in order to increase performance and productivity.

Giselle has devoted more than 20 years to researching the impact that generational differences have on organizational performance, creating solutions and programs in four areas – leadership, high performance teams, early career talent, and reinforcement & sustainment of learning. Giselle has co-authored two books and completed her Master of Arts Degree in Communications Studies at the University of Windsor.

She is Chair of the Board at The Institute for Performance and Learning (I4PL), co-chair of the Cross Academy Association and Advisory Council member at the Ted Rogers School of Management at Toronto Metropolitan University.