"We will receive 40% of the gross sum recovered by settlement or otherwise.... Notwithstanding the foregoing, our contingent fee will not exceed $7,500,000."
So, the settlement is at least $18.75M. But could be more.
That's ~60 per bond net of Susman's fee. I just checked the price, and the ask has gone up 55 in the last couple days (170-225). More efficient price discovery than I would have expected.