 NEW YORK--BUSINESS WIRE--Casper Sleep Inc. Casper NYSE: CSPR the award-winning sleep company, today announced several leadership appointments, including Charles Liu as Chief Operating Officer, Dara Williams as Chief People and Diversity Officer, and George Poulios, Vice President of Retail, Real Estate and Store Development. We are thrilled to welcome this bench of remarkable leaders to the team as we continue to strengthen Caspers leadership in a way that reflects our core values, s 