This is a multicenter, open-label, Phase Ia/b dose escalation study of safety, pharmacodynamics, and pharmacokinetics of CG-806 in ascending cohorts (3+3 design) to determine the MTD or recommended dose in patients with relapsed or refractory CLL/SLL or Non-Hodgkin's Lymphoma patients. This is to be followed by a cohort expansion phase at the MTD or recommended oral dose.