An early Ethereum ICO participant has reactivated their wallet after a year of inactivity, selling 9,628.54 ETH for approximately $19.72 million. The wallet, which initially acquired 38,800 ETH at $0.31 each in 2015, transferred 18,500 ETH to another address before executing the sale at an average price of $2,049 per ETH. The address still retains a significant amount of ETH.