Presented below is a summary of the components used to calculate basic and diluted income per share. The Company applies the two-class method of computing income per share, as nonvested share-based awards that contain nonforfeitable rights to dividends are considered securities which participate in undistributed earnings with common stock. The two-class method requires the calculation of separate income per share amounts for the nonvested share-based awards and for common stock. Income per share attributable to common stock is shown in the table below. Nonvested share-based awards are further discussed in Note 12.



	For the Three Months Ended September 30				For the Nine Months Ended September 30
(In thousands, except per share data)	2015		2014		2015		2014
Basic income per common share:
Net income attributable to Commerce Bancshares, Inc.	$	64,612	$	68,185	$	200,020	$	199,029
Less preferred stock dividends	2,250		1,800		6,750		1,800
Net income available to common shareholders	62,362		66,385		193,270		197,229
Less income allocated to nonvested restricted stock	884		879		2,677		2,537
Net income allocated to common stock	$	61,478	$	65,506	$	190,593	$	194,692
Weighted average common shares outstanding	91,989		95,104		93,874		97,591
Basic income per common share	$	.67	$	.69	$	2.03	$	2.00
Diluted income per common share:
Net income available to common shareholders	$	62,362	$	66,385	$	193,270	$	197,229
Less income allocated to nonvested restricted stock	883		877		2,672		2,530
Net income allocated to common stock	$	61,479	$	65,508	$	190,598	$	194,699
Weighted average common shares outstanding	91,989		95,104		93,874		97,591
Net effect of the assumed exercise of stock-based awards - based on
the treasury stock method using the average market price for the respective periods	280		412		300		419
Weighted average diluted common shares outstanding	92,269		95,516		94,174		98,010
Diluted income per common share	$	.66	$	.69	$	2.02	$	1.99