According to Arkham's monitoring, the relevant address of the suspected Ethereum Foundation transferred 150 ETH to the CoW Protocol 15 minutes ago, and then received 497,250 DAIs from the CoW Protocol. Since this year, the 0xd7 Ethereum Foundation affiliate has been selling ETH for DAI through the Cow Protocol almost every week or every two weeks, typically 50, 100, and 200 ETH.