Integrity of capital marke- Q?

Under standar two: Integrity of capital marke- Material nonpublic info proprietary trading procedures Can any one assist me in understaning this point CFAI page 53 Thanks

The recent example of sharing material non public information is Rajat Gupta who was accused of insider trading. Any information which can effect the share prices of the company and known to only senior mgt is considered Non public and material. Regulations of capital market demand complete integrity where in Material information should reach to general public at the same time and no one should be treated with exception.