The "core values" are for the drones, specifically to keep them in line and not cause any issues. The board members can keep doing what the $%%$ they want as the only values they have are economic, the generation of profit for the company.
Just remember that corporationa are not "ethical" so having "core values" is an oxymoron. The only thing a corporation exists for is profit, so "core values" is the clown face painted on a psychopath. A corporation will lie, rape and destroy to make a profit.
Human beings have values. Human beings can be ethical. But most corporate leaders leave their humanity at the door when running a corporation. It is just business.
"Core values" are a delusion for the masses, a stupid form of mind control to keep the losers in thrall [1].
[1] See the definition of loser here: http://www.ribbonfarm.com/2009/10/07/the-gervais-principle-o...