By Poornima Gupta and Gerry Shih
SAN FRANCISCO (Reuters) - The rich are going to get richer when Silicon Valley's biggest IPO starts trading.
Facebook is only getting about half -- or $5.6 billion -- of the roughly $10.6 billion it plans to raise via a mega IPO. The other half, or about $4.9 billon, is going to a handful of inside investors -- many Silicon Valley notables.
Chief among them are co-founder and Chief Executive Mark Zuckerberg, venture firm Accel Partners, early investor and PayPal co-founder Peter Thiel, Russian tycoon Yuri Milner's DST, and investment bank Goldman Sachs.
And Mark Pincus, co-founder of the gaming company Zynga, is set to get his second payout in six months. He stands to make almost $32 million, on top of his take when the social gaming giant he co-founded went public last year.
Those holding onto their stakes -- for now -- include: Napster co-founder and Facebook founding president Sean Parker; co-founder and Zuckerberg's Harvard roommate, Dustin Moskovitz; various Facebook executives; and venture capital firm Andreessen Horowitz.
The largest seller is Accel Partners, which will make about $1.2 billion if the shares sell at the $31.50 mid-point of an indicative price range. Zuckerberg, who started Facebook in 2004 from his Harvard dorm room, is selling the next largest chunk of shares worth a little under $1 billion.
(Reporting by Poornima Gupta and Gerry Shih; Editing by Bernard Orr)