For the past four years, Elisse Walter has served diligently as a commissioner at the U.S. Securities and Exchange Commission — but compared to the scope of the responsibilities she’ll take on starting December 14 as the agency’s next chairman, she joked, “I thought I’ve been on vacation.”

In Walter’s first public appearance since President Barack Obama tapped her to succeed Mary Schapiro as head of the SEC, she touched on a wide range of issues before the agency, including implementation of the Dodd-Frank and Jumpstart Our Business Startups (JOBS) acts, oversight of investment advisers, the agency’s budget and its new whistleblower program.