Shareholders' Equity (Deficit)

12 Months Ended

Dec. 31, 2013

Equity [Abstract]

Shareholders' Equity

Shareholders' Equity

Under its Certificate of Incorporation, the Company is authorized to issue 300,000,000 shares of common stock, $0.01 par value. As of December 31, 2013, the W. R. Grace & Co. 2011 Stock Incentive Plan had 800,000 shares of unissued stock reserved for issuance in the event of the exercise of stock options under the Plan. Historically all stock options exercised were covered by reissuing treasury stock. During 2013, stock options exercises exceeded the shares available in treasury stock and therefore the Company issued new shares, which were reserved for issuance under the Plans. For the years ended December 31, 2013, 2012, and 2011, 1,464,294, 1,679,359, and 765,693 stock options were exercised for aggregate proceeds of $34.4 million, $32.2 million, and $12.1 million, respectively. Additionally in 2013, 10,440 common shares were issued to members of the Board of Directors and 6,000 restricted common shares were issued to certain key employees.

The following table sets forth information relating to common stock activity for 2013 and 2012:

Balance of Outstanding Shares, December 31, 2011	73,886,050
Stock options exercised	1,679,359
Balance of Outstanding Shares, December 31, 2012	75,565,409
Stock options exercised	1,464,294
Shares Issued	16,440
Balance of Outstanding Shares, December 31, 2013	77,046,143