This week, Henrique de Castro, Yahoo's chief operating officer unexpectedly departed the company just over a year after he was hired by Yahoo CEO Marissa Mayer. Mayer had hired de Castro from Google, where she had also been an executive, shortly after she took over at Yahoo.
De Castro was charged with turning Yahoo's advertising business around. "However, the company has failed to significantly increase advertising revenues for its website and mobile applications," according to a BBC News report.
BusinessWeek magazine reported that "in a memo to employees, Mayer said she made the decision that de Castro should leave, according to a person who saw the note and asked not to be identified because it wasn’t made public. There had been friction between the two executives for at least six months, another person said."
de Castro's departure could be costly for Yahoo. "Castro is one of Silicon Valley's most highly-paid executives and may receive a multi-million-dollar severance package," BBC News reported.