WDFC: Common stock - authorized 36,000,000 shares, $0.001 par value; 19,030,911 and 18,948,868 shares issued at February 29, 2012 and August 31, 2011, respectively; and 15,887,864 and 16,367,913 shares outstanding at February 29, 2012 and August 31, 2011, respectively