There were several transactions that comprised the defined term "The Visolis Transaction". So they would all be encapsulated by that term, or if it wasn't a defined term (all lowercase) you could make it plural to be correct.
Either way, yet another "hint" with no theory that doesn't fall down. Since no transaction like the one you are hinting at was listed in the Agreement and the language used was "transactions contemplated by this Agreement", either the drafter was mistaken and meant "transactions contemplated by this Agreement and another agreement", or "transactions contemplated by this Agreement" meant, of course, the transactions described in detail that altogether were defined as The Visolis Transaction".
