But that's the point. I too have both personal and business AmEx cards (seven total, three for my company), but all of the current business accounts are under my company's EIN number, and don't appear on my personal portal. The bills don't have my name on them, just the company, and they go to the business address. Legally, the company and I are completely separate entities. DUT is a long-established company, and has had an EID for God-knows how long. There's no reason for that account to have Werner's own name and address, and for AmEx to come after him personally, rather than just the company, unless the card was applied for under his SSN. I mean, it's literally the primary reason for incorporating: to insulate one's self from the company's liabilities/debt. Also, it looks like the account was opened just last July, based on the Cardmember Agreement included in the exhibits to the suit.