The following data has been collected about Keller Company's stockholders' equity accounts: Common stock $10 par value 22,000 shares authorized and 11,000 shares issued, 1,200 shares outstanding $110,000 Paid-in-capital in excess of par value, common stock 52,000 Retained earnings 27,000 Treasury stock 14,040 Assuming the treasury shares were all purchased at the same price, the number of shares of treasury stock is: