SELECTED QUARTERLY INFORMATION (Tables)

12 Months Ended

Sep. 30, 2012

SELECTED QUARTERLY INFORMATION [Abstract]

Selected Quarterly Operating Results

The following table presents our unaudited financial information for the eight quarterly periods ended September 30, 2012.  This unaudited financial information has been prepared in accordance with accounting principles generally accepted in the United States of America, applied on a basis consistent with the annual audited financial statements and in the opinion of management, include all necessary adjustments, which consist only of normal recurring adjustments necessary to present fairly the financial results for the periods.  The results for any quarter are not necessarily indicative of results for any future period.

CABOT MICROELECTRONICS CORPORATION
SELECTED QUARTERLY OPERATING RESULTS
(Unaudited and in thousands, except per share amounts)
	Sept. 30,			June 30,			March 31,		Dec. 31,		Sept. 30,			June 30,			March 31,		Dec. 31,
	2012			2012			2012		2011		2011			2011			2011		2010
Revenue	$	110,621		$	115,678		$	99,236	$	102,122	$	109,731		$	111,846		$	109,660	$	114,205
Cost of goods sold		56,883			60,462			53,442		52,843		58,814			58,821			56,927		56,774
Gross profit		53,738			55,216			45,794		49,279		50,917			53,025			52,733		57,431
Operating expenses:
Research, development and technical		15,401			15,415			14,071		13,755		14,687			14,573			14,919		13,856
Selling and marketing		7,288			7,458			7,434		7,336		7,702			7,785			6,791		7,480
General and administrative		10,572			10,695			15,177		12,901		11,677			11,008			11,567		11,676
Total operating expenses		33,261			33,568			36,682		33,992		34,066			33,366			33,277		33,012
Operating income (loss)		20,477			21,648			9,112		15,287		16,851			19,659			19,456		24,419
Interest expense		961			955			354		39		44			30			37		44
Other income (expense), net		(681	)		(864	)		97		104		(829	)		(281	)		683		(891	)
Income (loss) before income taxes		18,835			19,829			8,855		15,352		15,978			19,348			20,102		23,484
Provision (benefit) for income taxes		7,196			6,587			3,325		4,937		6,689			6,559			7,010		6,992
Net income (loss)	$	11,639		$	13,242		$	5,530	$	10,415	$	9,289		$	12,789		$	13,092	$	16,492
Basic earnings (loss) per share	$	0.51		$	0.57		$	0.24	$	0.46	$	0.41		$	0.55		$	0.57	$	0.73
Weighted average basic shares outstanding		22,920			23,120			22,768		22,508		22,816			23,119			23,032		22,710
Diluted earnings (loss) per share	$	0.49		$	0.55		$	0.23	$	0.45	$	0.40		$	0.54		$	0.55	$	0.71
Weighted average diluted shares outstanding		23,706			23,939			23,780		22,926		23,191			23,797			23,693		23,131
Dividends per share	$	-		$	-		$	15.00	$	-	$	-		$	-		$	-	$	-