According to @lookonchain, a significant Bitcoin holder, often referred to as an 'OG', has executed a major transaction. This entity, who initially held 80,009 BTC valued at approximately $9.46 billion, transferred 40,192 BTC, worth around $4.77 billion, to a new wallet address 'bc1qs4', as reported by @lookonchain. This on-chain movement has raised concerns among market observers that the holder may be preparing to continue selling their holdings, which could introduce significant selling pressure on the Bitcoin (BTC) market, according to the source's analysis.