COMMON STOCK AND EARNINGS PER SHARE

Basic earnings per share attributable to Knoll, Inc. stockholders excludes the dilutive effect of (i) common shares that could potentially be issued due to the exercise of stock options, and (ii) unvested restricted stock and restricted stock units and is computed by dividing net income by the weighted-average number of common shares outstanding for the period. Diluted earnings per share attributable to Knoll, Inc. stockholders includes the effect of shares and potential shares issued under the stock incentive plans. The following table sets forth the reconciliation from basic to diluted weighted-average number of common shares outstanding:



	Three months ended
	March 31,	March 31,
	2015	2014
	(in thousands)
Weighted-average number of common shares outstanding - basic	47,648	47,200
Potentially dilutive shares resulting from stock plans	705	849
Weighted-average number of common shares outstanding - diluted	48,353	48,049
Antidilutive equity awards number of shares not included in the weighted-average common shares - diluted	—	164

Common stock activity for the three months ended March 31, 2015 and 2014 included the repurchase of 287,689 shares for $6.1 million and 237,628 shares for $3.7 million, respectively. Common stock activity for the three months ended March 31, 2015 also included the exercise of 274,346 options for $3.8 million and the vesting of 267,830 restricted shares. Common stock activity for the three months ended March 31, 2014 also included the exercise of 1,590 options for $36.0 thousand and the vesting of 496,191 restricted shares. During the first quarter of 2015, the Company granted 271,426 equity-based awards to certain employees and the Company's Board of Directors. The vesting of these awards is subject to certain service, performance or market conditions.