Biogen Idec Inc, Ten Percent Owner at Viracta Therapeutics, holds 2.91M shares in Viracta Therapeutics (Ticker: VIRX), holds 4.42M shares in Tecogen (Ticker: TGEN), holds 17.65M shares in Sangamo Biosciences (Ticker: SGMO). Most recently, Biogen Idec Inc ― shares of Viracta Therapeutics on ― for an estimated value of ―.