(Reuters) -Tesla Inc Chief Executive Elon Musk has denounced as “utterly untrue” claims in a news report that he sexually harassed a flight attendant on a private jet in 2016. Shares of the electric carmaker skidded more than 10% on Friday amid concerns that the alleged sexual misconduct and Musk’s political comments could threaten to damage Tesla’s brand and sales. Business Insider reported on Thursday that Musk’s private company SpaceX paid $250,000 in 2018 to settle a sexual harassment claim from an unnamed private jet flight attendant who accused Musk of exposing himself to her. The articl…