“As one of the most important women leaders in tech—the first to lead a major company—she was committed to expanding opportunities for women throughout Silicon Valley,” former Meta chief operating officer Sheryl Sandberg wrote in a social media post. “I don’t believe my career would be what it is today without her unwavering support.”

“She was one of Silicon Valley’s visionaries and she will be missed by so many,” Apple CEO Tim Cook wrote on X. “May she rest in peace.”