Public Company Advisory Committee Act of 2023 This bill establishes the Public Company Advisory Committee within the Securities and Exchange Commission (SEC). The committee must advise the SEC on regulatory priorities, public reporting and corporate governance of public companies, shareholder meetings and the proxy process, and other topics. The committee must be comprised of individuals who are officials of public companies, have senior managerial responsibility in associations that represent the interests of public companies, or provide professional advice and services to public companies.