Stockholders' Equity

3 Months Ended

Mar. 31, 2014

Equity [Abstract]

Stockholders' Equity

NOTE 9—STOCKHOLDERS’ EQUITY

On March 26, 2014, Sangamo completed an underwritten public offering of its common stock, in which the Company sold an aggregate of 4,444,444 shares of its common stock at a public offering price of $22.50 per share. The net proceeds to Sangamo from the sale of shares in this offering, after deducting underwriting discounts and commissions and other estimated offering expenses, were approximately $93.8 million.