A Checklist of key issues for defendants considering standing challenges in a typical securities class action asserting claims under Section 10(b) of the Securities Exchange Act of 1934 and Sections 11 and 12(a)(2) of the Securities Act of 1933. It addresses the standing requirements for lead plaintiffs under the Private Securities Litigation Reform Act of 1995 and provides guidance on determining whether named plaintiffs have constitutional, prudential, and statutory standing. It also discusses procedural constraints on standing challenges, including for absent class members.