According to @EmberCN, an Arbitrum Foundation multisig transferred 10 million ARB (about $4.99 million) to Coinbase Prime 9 hours ago; source: @EmberCN (X, Aug 30, 2025). The same wallet reportedly receives roughly 15 million ARB each month from the Arbitrum Foundation vesting contract and typically forwards 10 million ARB to Coinbase Prime; source: @EmberCN (X, Aug 30, 2025). The wallet began unlocking ARB in July 2023 and has unlocked a total of 414 million ARB to date; source: @EmberCN (X, Aug 30, 2025). For trading relevance, this reflects a recurring cadence of approximately 10 million ARB monthly inflows to a centralized venue as described by the source; source: @EmberCN (X, Aug 30, 2025).