In December, Boies Schiller Flexner partners Natasha Harrison and Nick Gravante became the first attorneys to lead the firm whose last names weren’t Boies, Schiller or Flexner. The leadership announcement followed a tough three years for the firm, which had been grappling with a public relations beating over founder David Boies’ work for controversial clients and an extended slip in the Am Law 100 rankings.

But Harrison and Gravante’s honeymoon was short-lived: In the months since, at least 31 partners have left to join Am Law 100 peers such as Cooley, King & Spalding and Covington & Burling, culminating with a 15-partner exodus from the firm’s West Coast offices in April. The moves have kept the firm in the headlines, raising fresh questions about its stability.