Binance CEO CZ said the company invested in Terra as part of its Binance Labs investment in 2018. The collapse of the Terra ecosystem came as a shock to many players in the crypto market. In an interview with Fortune, CZ said that he holds 50 million LUNA coins in a public crypto wallet address. CZ said they didn't make any money and lost an investment of $1.6 billion, but that's fine, though.
According to Jump Crypto, the sales resulted from a series of transactions in the USTw - 3CRV Curve protocol.