Earlier quoted context omitted.
It's arbitrary. A lot of people call the first small equity round a Series AA. My guess is that their first round was either a convertible or a Series AA that was mislabeled as a Series A in Crunchbase. Or this one was a Series B that was mislabed a Series A. Either way, it doesn't really mean much. And "seed round" is more of a general term. Your Series A could be your seed round. It doesn't have any specific meanin…
A series A means that you're issuing class A stock. An angel round means your issuing a note that will eventually convert to class A stock, aka a convertible note. The threshold between an angel round and a series A is determined by your articles of incorporation. It's usually between 2 and 5 million. Before your series A you have no valuation b/c it would be a waste of money to determine it. Once you have matured an…
My point was that it's a custom, not a law, and the distinction between an AA and an A is arbitrary.