WSJ wrote:

The weak results immediately sent the company's shares into free fall.In after-hours trading, Zynga's stock fell to $3.05, down nearly 70%, from the $10 at which the company went public late last year. Its market capitalization shrank to under $4 billion, farbelow the $10 billion valuation it commanded last year when private investors were fighting to invest in the company.

Marc Pincus, Zynga's CEO, sold 16.5 million shares for $200 million
Institutional Venture Partners, a Zynga investor, sold 5.8 million shares for $70 million
Union Square Ventures, a Zynga investor, sold 5.2 million shares for $62 million
Google, a Zynga investor, sold 4 million shares for $48 million
Silver Lake Partners, a Zynga investor, sold 4 million shares for $48 million
Reid Hoffman, a Zynga investor, sold 688,000 shares for $8.2 million
David Wehner, Zynga's CFO, sold 386,000 shares for $4.6 million
John Schappert, Zynga's COO, sold 322,000 shares for $3.9 million
Reginald Davis, Zynga's general counsel, sold 315,000 shares for $3.8 million
And so on ...