It is not uncommon for insiders to lighten up after a huge increase in share price.
Besides, there are other investors acquiring the shares that are being sold by insiders, so the impact that will be felt in the market is negligible.
Calling this a coordinated dumping of shares, is taking a normal activity in the capital markets to a level beyond what is a very common occurrence on Wall Street.
It really no big deal, unless someone happens to be short.
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