Because it's easy to do if you have controlling interest.
But according to the last 10K (that's where it's reported, for those non-accountants here), officers and directors own 31%, not a majority. Almost all ownership is controlled by Bin Wang, whose wife and daughter also share his ownership of 30% of the common stock. http://www.sec.gov/Archives/edgar/data/1298195/000114420411050266/v233659_10k.htm
Jiao Wang does seem to no longer be listed as an insider with 8 million shares between the the 2008 Form 14c filed and the 2011 10-K filing, so the question is did that person sell, or cease to be an insider, or ......both? Jiao was listed in 2008, and is not listed in the 2011 10-K
And the joint Wang holding of 17.5 million dropped to 17 million.
One more thought, perhaps non-officer, employees are not considered insiders with respect to filing a form 3 or 4. I only mention this with respect to the employee stock awards I found in the latest 10-K.