The Ethereum Foundation has been toxic recently. Just now, they transferred 1,000 ETH to an unfamiliar address, most likely to sell it.
And 13 days ago, they transferred 35,000 ETH to Kraken for sale, causing ETH to fall from 2,800 to 2,300.
The only consolation is that this time there are only 1,000, not 35,000. Then they are selling at a low price now, so when Buglar upgrades and soars later, they will not transfer coins to ship.
In fact, I personally think that no matter whether it is 35,000 or so, they will definitely not sell it now, but just keep it in there, and wait until the high point to sell it secretly without transferring the coins to the exchange, resulting in the end of the big market.