John Poss, Chairman and CEO

John Poss

CEO and Board Member John Poss has had a diverse career in C-level positions across a host of industries. His expertise, intuition, and skill at team building and growing partnerships are the driver for GB Sciences.


Mr. Poss has over 30 years of experience working as a consultant to companies facing major transitions and transformations.

Mr. Poss began his career in the Washington, D.C. office of Arthur Andersen & Co. and has served as Chief Executive Officer, Chief Operating Officer, Chief Financial Officer and Chief Technology Officer of both public and private companies in such diverse industries as homebuilding, mining, telecommunications, manufacturing, logistics, construction lending and mortgage banking.

For the past twenty months prior to joining Growblox, Mr. Poss served as Chief Executive Officer of Experiential Teaching Online Corp., an educational content developer and for four years prior thereto owned and operated his own consulting firm. Mr. Poss has also has worked extensively internationally, successfully negotiating agreements in countries throughout Asia, Europe and the Americas.

Mr. Poss graduated from the University of Texas in 1974 with a degree in accounting. In addition to serving as a director of Fourth Coast Mobility and the Homecare Foundation, he is a director of The Life Raft Group, a non-profit organization that provides patient support and funds research to find a cure for GIST, a rare cancer.