Lawyer Who Helped Musk Beat Defamation Suit Takes on Investors

A Manhattan trial lawyer who helped Elon Musk defeat a defamation lawsuit by a British caver is now set to defend the Tesla Inc. CEO in a fight with shareholders.

Alex Spiro, a partner in the New York office of Quinn Emanuel Urquhart & Sullivan, joined Musk’s legal team Monday, according to a filing in Delaware Chancery Court where Musk is scheduled to go on trial.

Last month, Tesla’s directors other than Musk agreed to a $60 million settlement to resolve the lawsuit over the company’s 2016 purchase of SolarCity. The accord left Musk, Tesla’s largest shareholder, to battle ...