Tim Cook, the Chief Executive of Apple, has publicly come out as gay.
He made the announcement in an article he wrote for Bloomberg Businessweek.
"I'm proud to be gay and I consider being gay among the greatest gifts God has given me," he said.
He said that he had always been open about his sexuality amongst friends and colleagues at Apple, but had always tried to maintain some privacy about his life until now.
Even though he had never been out, he still topped Out magazine's LGBT Power list in 2013, and came second to Ellen DeGeneres this year.
Mr Cook said that he did not consider himself an activist but realised how much he had benefited from the sacrifices of others.
"So if hearing that the CEO of Apple is gay can help someone struggling to come to terms with who he she is, or bring comfort to anyone who feels alone, or inspire people to insist on their equality, then it's worth the trade-off with my own privacy," he said.
"Being gay has given me a deeper understanding of what it means to be in the minority and provided a window into the challenges that people in other minority groups deal with every day," he added.
"It's made me more empathetic, which has led to a richer life."