Catherine represented clients in securities and commercial litigation and investigations.

Nicki Locker retired as a partner of Wilson Sonsini Goodrich & Rosati in 2026. She represented companies and their officers and directors in shareholder class actions and derivative suits throughout the United States and had substantial experience in corporate internal investigations and SEC investigations and enforcement proceedings.

Nicki was recognized as one of the leading securities litigation practitioners in Chambers USA: America’s Leading Lawyers for Business for nearly two decades. The guide described Nicki as “an excellent litigator who handles most sophisticated securities litigation” and “knows everything there is to know about defending securities litigation and is committed to making your defense as strong as it can be."