Sarah Nusinow

Attorney R. Brent Wisner is a managing partner of Wisner Baum (formerly Baum Hedlund Aristei & Goldman), a nationwide law firm based in Los Angeles, California. He focuses his practice on holding negligent and sometimes malicious corporations accountable through pharmaceutical product liability, toxic torts and consumer fraud and class action litigation. One of the firm’s leading trial lawyers, Brent oversees the mass tort litigation department. He is actively involved in all litiga...

Michael O’Bryan is a partner in the firm’s Corporate Department. His practice focuses on U.S. and international mergers, acquisitions, divestitures, and other strategic transactions, including “going private” and other related party transactions. He has been involved in more than 350 M&A transactions, advising companies, boards, and special committees, as well as investment banks, in both negotiated and contested transactions. Mr. O’Bryan has worked extensive...

Ron Holland represents employers in state and federal court litigation, including wage and hour class actions, whistleblowing, wrongful termination, harassment, discrimination, breach of contract, and other complex labor and employment matters. He has experience defending employers in proceedings before governmental agencies, such as the Department of Fair Employment and Housing, the Equal Opportunity Employment Commission, the National Labor Relations Board (NLRB), the California Labor Commi...

Bruce Copeland is a partner in the firm’s commercial litigation practice, and former deputy department head for the firm’s entire Litigation practice. He represents and counsels a variety of businesses with respect to a variety of concerns, including advertising and labeling issues, false and misleading advertising, trade secrets, complex commercial litigation in federal and state court, litigation avoidance, and a broad range of areas in the food and beverage industry. My focus I...

Jack W. Londen is a top attorney recognized by Best Lawyers in the practice area(s) of Bet-the-Company Litigation, Commercial Litigation and Litigation - Intellectual Property. Jack W., who practices law in San Francisco, California, has been recognized since 2006. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jack W. is held by other top lawyers in the same geographic and legal practice area.

Eric Tate serves as the co-chair of our Employment and Labor Group and co-chair of our Diversity Strategy Committee. He represents companies in trade secrets, employee raiding and mobility, unfair competition, wage and hour, employment discrimination and whistleblower litigation, and in counseling matters. He has litigated various employee claims including, for example, discrimination and harassment, wrongful termination, and the interpretation of collective bargaining agreements in both stat...

Gretchen M. Wallacker is a Certified Family Law Specialist and has practiced family law exclusively for three decades. In that time, she has helped countless families transition out of their marriages, settling a full spectrum of complex family law matters that involve child custody, visitation, child support, spousal support, and property division, including division of high net worth estates. Drawing on her geographical focus in San Francisco, the Peninsula, and Silicon Valley, Gretchen und...

Sophia (Sophie) Castillo counsels domestic and international importers, distributors, national brands, private labels, institutional suppliers, family-owned food processing businesses, and retail grocers on compliance, litigation, and risk avoidance surrounding California’s Proposition 65, as well as other state and national laws related to chemicals and toxics. She advises clients involved in numerous industries across the entire supply chain, including food and beverage, apparel, cook...

William Bernstein has practiced law for more than three decades. Who’s Who Legal called him, “a leader in the plaintiffs’ bar in the fields of complex civil litigation, antitrust , and consumer protection law.” Notable cases Bill has litigated include price-fixing suits against pharmaceutical companies on behalf of retail pharmacies, consumer claims against the world’s largest vitamin manufacturers for crafting a global “vitamins cartel,” charges agai...

Alicia M. McKnight is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Alicia M., who practices law in San Francisco, California, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alicia M. is held by other top lawyers in the same geographic and legal practice area.