Geib will provide medical leadership and clinical guidance in this new role, focusing on physician and hospital system collaboration, client growth and retention and medical cost reduction. Dollar Tree director bought 2,000 shares Director Lemuel E. Lewis bought 2,000 shares on Dec. 3 for an average price of $89.01. The stock has gained 3.63% since then. Dollar Tree operates a chain of discount variety stores that sell items at $1 or less. The company operates 13,600 stores in 48 U.S. states and Canada. Products include health and beauty, food, decor, houseware, toys and household cleaning supplies.