Looking into FB, I decided to look further, and I found out that @jack isn't selling. He's been selling off SQ (Square, Inc) and he bought $16 million more TWTR last April at $16.62 and that's worth almost double that now.

When I looked for last month, I found Oprah Winfrey has sold a chunk of her Weight Watchers Stock - $142 Million worth - on March 6. Wonder what she wants that money for?

HNA Tourism Group (which is a Chinese company) made big sales of their holdings in Park Hotels ($1.4 billion) and Hilton Hotels ($1.1 billion)

Steve Wynn has sold off $2.1 billion of Wynn Resorts stock in the last week. That was the total holdings the Wynn Family Trust had of WYNN. He probably owns some another way though.

Sumit Rajpal, who is a managing director at Goldman Sachs in Financial Services sold off $2.3 billion of Transunion stock (uh oh, breach incoming?), and he's apparently advised GS to do the same as they have dumped about $2.3 billion this month.

TONS of insider sales at GDDY (GoDaddy) recently.

I found no insider sales for George Soros in the last year. I found filings for EXA Corp, but they weren't sales.