$137.68M WETH moved on Base in a single transaction – a rare nine-figure onchain flow that demands attention.

A whale transferred exactly $137.68 million in WETH from 0xbbbb…ffcb on the Base network in transaction 0x4ca0…00b4. The move is clean: no mixer interaction, no fresh wallet generation, no dispersal pattern, no sanctioned-address touch, and no bridge routing.

It is simply a very large internal transfer.

For our methodology, this is a pure size-and-flow event on a chain where institutional and smart-money activity has been climbing. When a single wallet moves this much WETH without the forensic red flags that would suggest obfuscation, it typically points to treasury rebalancing, a large OTC settlement, or custody rotation – exactly the kind of quiet onchain footprint we watch alongside falling exchange reserves to confirm accumulation conviction.