William Leiner

William Leiner is a Director at ASG, where he advises ASG’s health and life sciences clients on regulatory challenges, market entry, and business strategy.

Prior to joining ASG, Mr. Leiner spent six years at Johnson & Johnson providing financial and strategic analysis for the company in various markets across the pharmaceutical, medical device, and consumer healthcare sectors. As a Project Lead, he developed and led initiatives to improve strategic analytics capabilities and increase training effectiveness for commercial associates. As a Senior Financial Analyst, Mr. Leiner provided financial forecasts and advised senior leaders. He also participated in Johnson & Johnson’s competitive Financial Leadership Development Program.

Outside of the office, Mr. Leiner has held leadership roles at various nonprofit organizations, including Junior Achievement of New Jersey, which helps children develop financial literacy skills, and Christ the King Prep, Newark’s Cristo Rey School. 

He earned an M.B.A. from the University of Oxford and a B.S. in Finance, with a minor in Economics, from Pennsylvania State University.

Mr. Leiner is based in Washington, DC.