 HONOLULU--BUSINESS WIRE--The Sonic Fund II, L.P. Sonic, which beneficially owns approximately 6.8 of the outstanding common stock of Adverum Biotechnologies, Inc. NASDAQ: ADVM the Company or Adverum, today issued the following statement regarding the Companys upcoming 2021 Annual Meeting of Stockholders the 2021 Annual Meeting, which will be held on Wednesday, May 12, 2021. It has come to our attention that one or more Adverum stockholders were left with the impression, fol 