Sheldon Kralstein, co-founder and recently retired CEO of Clients First Business Solutions, died this weekend. Kralstein died from pancreatic cancer. The leadership role had been taken over by Thomas Falteich, who became president and CEO in January, after serving as the VAR's COO since it was created. Kralstein founded the company in March 2003, and became its CEO in 2004. Headquartered in Holmdel, N.J., the company sold Sage and Microsoft products in offices across the nation.