According to CoinMeta, as reported by OnchainDataNerd, Mara transferred 6,000 BTC in the past 12 hours, which is approximately $3.846 million at current prices. This is part of its total assets of 36,303 BTC (about $2.34 billion). Nevertheless, the author believes that this does not indicate a sale; it seems to be merely a transfer of coins to a management account.