Yahoo’s workforce was less than 40 percent female, the company said yesterday, adding that many women were in non-leadership roles, in its first such disclosure amid a Silicon Valley debate over diversity. Yahoo said 77 percent of its leaders – defined as vice-presidents or higher – were men, according to the report on Tuesday. Women made up 15 percent of the technically focused positions and had 52 percent of the jobs in non-technical posts, it said. Almost 90 percent of the US workforce was white or Asian. The firm, one of the few led by a female chief executive Marissa Mayer, was disclosing the make-up of its staff after similar recent reports by Google and LinkedIn. The lack of minorities and women at technology companies has received growing attention. – Bloomberg