Management pointed to a divergence in performance between rewards members and non-members. Isely said the first-quarter comp was “primarily” influenced by trends among customers who do not participate in the rewards program, while {N}power members continued to deliver stronger sales growth.Hallé said the company continued to see its greatest sales growth in meat, dairy, and produce , which he described as some of Natural Grocers’ most differentiated offerings. He also noted a modest decline in transactions ...