Ethereum co-founder Vitalik Buterin has sold a total of 1,000.5 ETH across multiple transactions, amounting to approximately $2.27 million. The sales were executed in several batches, with individual transactions ranging from 11.364 ETH to 70.313 ETH. This series of sales comes amid ongoing market volatility, with Ethereum's price fluctuating around $2,270 per ETH at the time of the transactions.