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Employment and labor law firm Littler Mendelson added Jon C. Yonemitsu as shareholder in San Diego. Yonemitsu joins the firm from Gordon Rees Scully Mansukhani. He represents companies in matters related to discrimination, harassment and retaliation claims under Title VII, the Americans with Disabilities Act, the Family and Medical Leave Act, California's Fair Employment and Housing Act and the California Family Rights Act.

Former Irell & Manella partners Jason Linder and Glenn Vanzura are now part of Mayer Brown's litigation and dispute resolution practice. Linder—who headed Irell & Manella's global investigations and anti-corruption practice and served as a prosecutor for the U.S. Department of Justice—will be based in the firm's Los Angeles and Washington, D.C., offices. Vanzura, a securities litigator with experience in consulting, will be based in Los Angeles.

Nossaman brought on John Michael Puente to its health care practice group. Before joining the firm, Puente was vice president of government affairs and California operations director at health insurance company Oscar Health. He focuses his practice on law and public policy in health care. Puente will be a partner in Nossaman's Sacramento office.