FYI, even though you removed your post. My interpretation of the language was that since they indicated that there were both upfront and future payments, I interepreted that to mean that at least one of them paid the typical upfront lump-sum fee. Also, while it's not specified, the "future" payments imply royalties, since no one has ever stated that an "installment" payment scheme was being offered or available. However, in the darkness of little visibility, it's all SWAG work, so I'm definitely open to the idea that all three of them paid upfront and future payments as well.

Hopefully, some level of more certain understanding on this will be decipherable from the 10q.