NEW YORK--(BUSINESS WIRE)--Halper Sadeh LLC, an investor rights law firm, is investigating whether the sale of Adverum Biotechnologies, Inc. (NASDAQ: ADVM) to Eli Lilly and Company is fair to Adverum shareholders. Under the terms of the proposed transaction, Adverum shareholders will receive $3.56 per share in cash plus one non-transferrable contingent value right (CVR) entitling the holder to receive up to an additional$8.91 per CVR in cash upon the achievement of two certain milestones. Halp. ...