Arthur Levin, VP at Ionis Pharmaceuticals, holds 1.67K shares in Ionis Pharmaceuticals (Ticker: IONS), holds 268.70K shares in Avidity Biosciences (Ticker: RNA), holds 17.98K shares in Stoke Therapeutics (Ticker: STOK). Most recently, Arthur Levin ― shares of Ionis Pharmaceuticals on ― for an estimated value of ―.