I panicked initially when I saw this news before I realized it was nothing near hacking, and this cools my mind. It was just a withdrawal and might be a panic withdrawal though after the FTX palaver. It might be that the person or persons were trying to move their investments to fiat or another wallet. But I don't see a reason why anyone would move to another wallet from Coinbase since they are better regulated.

The total amount is valued at $1.625B (100,000BTC) at that time and it's truly huge, but would be the last of the heavy transfers to witness this season.