Mango Markets, a Solana-based decentralized exchange, is shutting down operations following a settlement with the SEC over regulatory violations and a significant hack that compromised its integrity. The Mango DAO agreed to pay a civil penalty of $223,228, cease all MNGO token activities, and destroy remaining tokens to avoid prolonged litigation. This closure highlights the challenges decentralized finance platforms face in navigating regulatory compliance, particularly within the Solana ecosystem.