Management tracks: Ultragenyx COO to step down next year; plus Agios, MiMedx, Iveric, Ardelyx, Novo Seeds, Axcella, NervGen

Rare disease company Ultragenyx Pharmaceutical Inc. (NASDAQ:RARE) said COO Wladimir Hogenhuis will step down on Jan. 10 due to personal reasons.

Cellular metabolism-focused company Agios Pharmaceuticals Inc. (NASDAQ:AGIO) hired Jonathan Biller as chief legal officer, a newly created position, effective Dec. 3. He was EVP and general counsel at Celgene Corp...