10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

________________________________________

FORM 10-Q

________________________________________ 

(Mark One)

ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 29, 2013

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission file number: 001-32598

 _______________________________________

Entegris, Inc.

(Exact name of registrant as specified in its charter)

 _______________________________________

Delaware	41-1941551
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
129 Concord Road, Billerica, Massachusetts	01821
(Address of principal executive offices)	(Zip Code)

(978) 436-6500

(Registrant’s telephone number, including area code)

None

(Former name, former address and former fiscal year, if changed since last report)

 _______________________________________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ý    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer	ý	Accelerated filer	¨
Non-accelerated filer	¨  (Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No ý

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class	Outstanding at July 22, 2013
Common Stock, $0.01 par value per share	139,064,121 shares

ENTEGRIS, INC. AND SUBSIDIARIES

FORM 10-Q

TABLE OF CONTENTS

FOR THE QUARTER ENDED JUNE 29, 2013

Description	Page
PART I Financial Information
Item 1. Unaudited Condensed Consolidated Financial Statements	3
Condensed Consolidated Balance Sheets as of June 29, 2013 and December 31, 2012	3
Condensed Consolidated Statements of Operations for the Three and Six Months Ended June 29, 2013 and June 30, 2012	4
Condensed Consolidated Statements of Comprehensive Income for the Three and Six Months Ended June 29, 2013 and June 30, 2012	5
Condensed Consolidated Statements of Equity for the Six Months Ended June 29, 2013 and June 30, 2012	6
Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 29, 2013 and June 30, 2012	7
Notes to Condensed Consolidated Financial Statements	8
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	13
Item 3. Quantitative and Qualitative Disclosures about Market Risk	23
Item 4. Controls and Procedures	23
PART II Other Information
Item 1. Legal Proceedings	24
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	24
Item 6. Exhibits	25
Signatures	26
Exhibit Index	27

Cautionary Statements

This report contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements involve substantial risks and uncertainties and reflect the Company’s current views with respect to future events and financial performance. The words “believe,” “expect,” “anticipate,” “intends,” “estimate,” “forecast,” “project,” “should,” “may,” “will” and “would” and similar expressions are intended to identify these “forward-looking statements.” You should read statements that contain these words carefully because they discuss future expectations, contain projections of future results of operations or of financial position or state other “forward-looking” information. All forecasts and projections in this report are “forward-looking statements,” and are based on management’s current expectations of the Company’s near-term results, based on current information available pertaining to the Company. The risks which could cause actual results to differ from those contained in such “forward looking statements” include, without limit, the risks described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012 under the headings “Risks Relating to our Business and Industry”, “Manufacturing Risks”, “International Risks”, and “Risks Related to Owning Our Securities” as well as in the Company’s quarterly reports on Form 10-Q and current reports on Form 8-K as filed with the Securities and Exchange Commission.

Any forward-looking statements in this Quarterly Report on Form 10-Q are not guarantees of future performance, and actual results, developments and business decisions may differ from those envisaged by such forward-looking statements, possibly materially. We disclaim any duty to update any forward-looking statements.

2

PART 1. FINANCIAL INFORMATION

Item 1. Financial Statements

ENTEGRIS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(In thousands, except share and per share data)	June 29, 2013			December 31, 2012
ASSETS
Current assets:
Cash and cash equivalents	$	343,411		$	330,419
Short-term investments	—			19,995
Trade accounts and notes receivable, net of allowance for doubtful accounts of $1,732 and $2,314	108,168			94,016
Inventories	98,140			99,144
Deferred tax assets, deferred tax charges and refundable income taxes	13,585			20,201
Assets held for sale	—			5,998
Other current assets	7,124			9,551
Total current assets	570,428			579,324
Property, plant and equipment, net of accumulated depreciation of $276,232 and $263,302	173,786			157,021
Other assets:
Intangible assets, net of accumulated amortization of $122,506 and $119,198	47,990			47,207
Deferred tax assets and other noncurrent tax assets	16,378			17,167
Other	23,356			10,825
Total assets	$	831,938		$	811,544
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	37,627			36,341
Accrued payroll and related benefits	23,299			29,376
Other accrued liabilities	23,496			21,887
Deferred tax liabilities and income taxes payable	9,101			5,659
Total current liabilities	93,523			93,263
Pension benefit obligations and other liabilities	17,093			17,066
Deferred tax liabilities and other noncurrent tax liabilities	5,059			6,416
Commitments and contingent liabilities	—			—
Equity:
Preferred stock, par value $.01; 5,000,000 shares authorized; none issued and outstanding as of June 29, 2013 and December 31, 2012	—			—
Common stock, par value $.01; 400,000,000 shares authorized; issued and outstanding shares as of June 29, 2013 and December 31, 2012: 139,174,789 and 138,457,769	1,392			1,385
Additional paid-in capital	814,865			809,514
Retained deficit	(124,569		)	(157,038		)
Accumulated other comprehensive income	24,575			40,938
Total equity	716,263			694,799
Total liabilities and equity	$	831,938		$	811,544

See the accompanying notes to condensed consolidated financial statements.

3

ENTEGRIS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

	Three months ended						Six months ended
(In thousands, except per share data)	June 29, 2013			June 30, 2012			June 29, 2013			June 30, 2012
Net sales	$	177,544		$	188,233		$	342,614		$	363,636
Cost of sales	99,974			105,487			197,916			204,646
Gross profit	77,570			82,746			144,698			158,990
Selling, general and administrative expenses	35,397			35,989			67,818			71,037
Engineering, research and development expenses	13,427			12,726			25,600			24,715
Amortization of intangible assets	2,359			2,420			4,646			4,870
Operating income	26,387			31,611			46,634			58,368
Other income, net	(910		)	(641		)	(2,258		)	(805		)
Income before income taxes and equity in net income of affiliates	27,297			32,252			48,892			59,173
Income tax expense	7,516			10,579			12,714			19,644
Equity in net income of affiliates	—			—			—			(3		)
Net income	$	19,781		$	21,673		$	36,178		$	39,532
Basic net income per common share	$	0.14		$	0.16		$	0.26		$	0.29
Diluted net income per common share	$	0.14		$	0.16		$	0.26		$	0.29
Weighted shares outstanding:
Basic	139,255			137,303			139,140			136,953
Diluted	139,751			138,196			139,791			138,121

See the accompanying notes to condensed consolidated financial statements.

4

ENTEGRIS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

	Three months ended						Six months ended
(In thousands)	June 29, 2013			June 30, 2012			June 29, 2013			June 30, 2012
Net income	$	19,781		$	21,673		$	36,178		$	39,532
Other comprehensive loss, net of tax
Foreign currency translation adjustments	(4,823		)	(1,160		)	(16,420		)	(4,141		)
Reclassification of cumulative translation adjustment associated with acquisition of business	—			(216		)	—			(216		)
Pension liability adjustments, net of tax	14			22			57			15
Other comprehensive loss	(4,809		)	(1,354		)	(16,363		)	(4,342		)
Comprehensive income	$	14,972		$	20,319		$	19,815		$	35,190

See the accompanying notes to condensed consolidated financial statements.

5

ENTEGRIS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY

(Unaudited)

(In thousands)	Common shares outstanding		Common stock			Additional paid-in  capital			Retained deficit			Foreign currency translation adjustments			Defined benefit pension adjustments			Total
Balance at December 31, 2011	135,821		$	1,358		$	788,673		$	(225,766	)	$	44,737		$	(764	)	$	608,238
Shares issued under stock plans	1,649		17			4,177			—			—			—			4,194
Share-based compensation expense	—		—			3,934			—			—			—			3,934
Repurchase and retirement of common stock	(57	)	(1		)	(329		)	(97		)	—			—			(427		)
Tax benefit associated with stock plans	—		—			827			—			—			—			827
Pension liability adjustment, net of tax	—		—			—			—			—			15			15
Reclassification of foreign currency translation associated with acquisition of business	—		—			—			—			(216		)	—			(216		)
Foreign currency translation	—		—			—			—			(4,141		)	—			(4,141		)
Net income	—		—			—			39,532			—			—			39,532
Balance at June 30, 2012	137,413		$	1,374		$	797,282		$	(186,331	)	$	40,380		$	(749	)	$	651,956
(In thousands)	Common shares outstanding		Common stock			Additional paid-in capital			Retained deficit			Foreign currency translation adjustments			Defined benefit pension adjustments			Total
Balance at December 31, 2012	138,458		$	1,385		$	809,514		$	(157,038	)	$	41,997		$	(1,059	)	$	694,799
Shares issued under stock plans	1,687		17			6,305			—			—			—			6,322
Repurchase and retirement of common stock	(970	)	(10		)	(5,663		)	(3,709		)	—			—			(9,382		)
Share-based compensation expense	—		—			3,769			—			—			—			3,769
Tax benefit associated with stock plans	—		—			940			—			—			—			940
Pension liability adjustment, net of tax	—		—			—			—			—			57			57
Foreign currency translation	—		—			—			—			(16,420		)	—			(16,420		)
Net income	—		—			—			36,178						—			36,178
Balance at June 29, 2013	139,175		$	1,392		$	814,865		$	(124,569	)	$	25,577		$	(1,002	)	$	716,263

See the accompanying notes to condensed consolidated financial statements.

6

ENTEGRIS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

	Six months ended
(In thousands)	June 29, 2013			June 30, 2012
Operating activities:
Net income	$	36,178		$	39,532
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	14,607			13,513
Amortization	4,646			4,870
Share-based compensation expense	3,769			3,934
Other	2,760			1,376
Changes in operating assets and liabilities:
Trade accounts receivable and notes receivable	(19,485		)	(10,335		)
Inventories	(3,135		)	(10,997		)
Accounts payable and accrued liabilities	(5,359		)	744
Other current assets	2,353			(797		)
Income taxes payable and refundable income taxes	7,524			2,679
Other	(1,603		)	(1,013		)
Net cash provided by operating activities	42,255			43,506
Investing activities:
Acquisition of property, plant and equipment	(34,131		)	(30,117		)
Acquisition of business, net of cash acquired	(13,358		)	(2,961		)
Proceeds from maturities of short-term investments	20,000			—
Proceeds from sale of assets held for sale	6,500			—
Other	47			183
Net cash used in investing activities	(20,942		)	(32,895		)
Financing activities:
Issuance of common stock	6,322			4,194
Repurchase and retirement of common stock	(9,382		)	(427		)
Other	941			827
Net cash (used in) provided by financing activities	(2,119		)	4,594
Effect of exchange rate changes on cash and cash equivalents	(6,202		)	(1,933		)
Increase in cash and cash equivalents	12,992			13,272
Cash and cash equivalents at beginning of period	330,419			273,593
Cash and cash equivalents at end of period	$	343,411		$	286,865

Supplemental Cash Flow Information

(In thousands)	Six months ended June 29, 2013		Six months ended June 30, 2012
Non-cash transactions:
Equipment purchases in accounts payable	$	4,129	—

See the accompanying notes to condensed consolidated financial statements.

7

ENTEGRIS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations Entegris, Inc. (Entegris or the Company) is a leading provider of a wide range of products for purifying, protecting and transporting critical materials used in processing and manufacturing in the microelectronics and other high-technology industries.

Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its majority-owned subsidiaries. Intercompany profits, transactions and balances have been eliminated in consolidation.

Use of Estimates The preparation of condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, particularly receivables, inventories, property, plant and equipment, and intangibles, accrued expenses and income taxes and related accounts, and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Basis of Presentation In the opinion of the Company, the accompanying unaudited condensed consolidated financial statements contain all adjustments necessary to present fairly, in conformity with accounting principles generally accepted in the United States of America.

The condensed consolidated financial statements and notes are presented as permitted by Form 10-Q and do not contain certain information included in the Company’s annual consolidated financial statements and notes. The information included in this Form 10-Q should be read in conjunction with Management’s Discussion and Analysis and consolidated financial statements and notes thereto included in the Company’s Form 10-K for the year ended December 31, 2012. The results of operations for the six months ended June 29, 2013 are not necessarily indicative of the results to be expected for the full year.

Fair Value of Financial Instruments The carrying value of accounts receivable and accounts payable approximates fair value due to the short maturity of those instruments.

Recent Accounting Pronouncements

In December 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2011-11, Amendments to Disclosures about Offsetting Assets and Liabilities. The objective of ASU No. 2011-11 is to provide enhanced disclosures that will enable users of its financial statements to evaluate the effect or potential effect of netting arrangements on an entity’s financial position. In January 2013, the FASB issued ASU No. 2013-01, Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities, which clarifies what instruments and transactions are subject to the offsetting disclosure requirements established by ASU No. 2011-11. Derivative instruments accounted for in accordance with Accounting Standards Codification (ASC) 815, are subject to ASU No. 2011-11 disclosure requirements. These amendments are disclosure related and will not have an impact on the Company’s financial position, results of operations, comprehensive income or cash flows. ASU Nos. 2011-11 and 2013-01 are effective for reporting periods beginning after December 15, 2012. Accordingly, the Company adopted ASU Nos. 2011-11 and 2013-01 in the first quarter of fiscal 2013. The disclosures associated with ASU Nos. 2011-11 and 2013-01 are included in note 5 to the Company’s condensed consolidated financial statements.

In February 2013, the FASB issued ASU No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income that amended ASU No. 2011-12 and ASU No. 2011-05. ASU No. 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either in the consolidated statements of operations or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. These amendments are disclosure related and will not have an impact on the Company’s financial position, results of operations, comprehensive income or cash flows. ASU 2013-02 is effective for reporting periods beginning after December 15, 2012. Accordingly, the Company adopted ASU 2013-02 in the first quarter of fiscal 2013. The disclosures associated with ASU No. 2013-02 are included in the Company’s condensed consolidated statements of equity. Amounts reclassified out of accumulated other comprehensive income were not significant.

Other ASUs issued not effective for the Company until after June 29, 2013 are not expected to have a material effect on the Company’s condensed consolidated financial statements.

8

2. ACQUISITIONS

Jetalon

On April 1, 2013, the Company acquired substantially all the operating assets and liabilities of Jetalon Solutions, Inc. (Jetalon), a California-based supplier of fluid metrology products. The acquired net assets became part of the Company’s Contamination Control Solutions segment. The transaction was accounted for under the acquisition method of accounting and the results of operations of the entity are included in the Company's consolidated financial statements as of and since April 1, 2013. The acquisition of Jetalon’s assets and liabilities does not constitute a material business combination.

The purchase price for Jetalon includes cash consideration of $13.4 million, funded from our existing cash on hand, and earnout-based contingent consideration of up to a maximum of $14.5 million based on the operating performance of Jetalon in 2013, 2014 and 2015. Costs associated with the acquisition of Jetalon were not significant and were expensed as incurred.

Upon acquisition, the Company recorded a contingent consideration obligation of $3.1 million representing the fair value of the contingent consideration. This amount was estimated through a valuation model that incorporates industry-based probability adjusted assumptions relating to the achievement of operating results and the likelihood of the Company making payments. This fair value measurement is based upon significant inputs not observable in the market and therefore represents a Level 3 measurement. Subsequent changes in the fair value of this obligation will be recognized as adjustments to contingent consideration and reflected within our condensed consolidated statements of operations.

The purchase price of Jetalon consists of the following:

(In thousands):	Amount
Cash paid at closing	$	13,357
Estimated contingent consideration	3,095
Total purchase price	$	16,452

The purchase price of Jetalon, including the Company's preliminary valuation of contingent consideration, exceeds the net of the acquisition-date amounts of the identifiable assets acquired and the liabilities assumed by $10.1 million. Cash flows used to determine the purchase price included strategic and synergistic benefits (investment value) specific to the Company, which resulted in a purchase price in excess of the fair value of identifiable net assets. The purchase price also includes the fair values of other assets that were not identifiable, not separately recognizable under accounting rules (e.g., assembled workforce) or of immaterial value in addition to a going-concern element that represents the Company's ability to earn a higher rate of return on the group of assets than would be expected on the separate assets as determined during the valuation process. This additional investment value resulted in goodwill, which is expected to be deductible for income tax purposes.

The following table summarizes the allocation of the purchase price to the fair values assigned to the assets and liabilities assumed at the date of acquisition:

(In thousands):	Amount
Accounts receivable, inventory and other assets	$	944
Identifiable intangible assets	5,634
Current liabilities	(216		)
Net assets acquired	6,362
Goodwill	10,090
Total purchase price	$	16,452

As of June 29, 2013, the Company has completed its fair value determinations for all elements of the Jetalon acquisition with the exception of its valuation of purchased intangible assets and contingent consideration. Intangible assets, consisting mostly of technology-related intellectual property, generally will be amortized on a straight-line basis over an estimated useful life of approximately 10 years. The valuation of these items has been performed on a preliminary basis by the Company and is currently being reviewed, with the expectation of completion in the third quarter.

EPT

On April 2, 2012, the Company acquired the remaining 50% of its EPT joint venture in Taiwan, an equity method investee in which it had previously owned a 50% equity interest. The transaction was accounted for under the acquisition method of accounting and the results of operations of the entity are included in the Company's consolidated financial statements as of and

9

since April 2, 2012. The investee's sales and operating results are not material to the Company's consolidated financial statements. The Company paid $3.4 million in cash for the additional 50% equity interest in the entity.

The Company remeasured its previously held equity interest in the entity at its April 2, 2012 fair value of $2.9 million. Based on the carrying value of the Company's equity interest in EPT before the business combination, the Company recognized a gain of $1.3 million. In addition, in prior reporting periods the Company recognized changes in the value of its equity interest in EPT related to translation adjustments in other comprehensive income. As required under the acquisition method of accounting, the $0.2 million recognized previously in other comprehensive income was reclassified and included in the calculation of the gain.

The purchase price has been allocated based on the fair values of all of the assets acquired and liabilities assumed. The sum of the purchase price of the additional 50% equity interest and the fair value of the equity interest in the investee held by the Company at the acquisition date exceeded the net of the acquisition-date amounts of the identifiable assets acquired and the liabilities assumed by $1.9 million. EPT is part of the Company’s Contamination Control Solutions segment.

As described above, the Company acquired businesses in 2013 and 2012. As part of the accounting for these transactions, the Company allocated the purchase price of the acquired entities based on the fair value of all the assets acquired and liabilities assumed. The valuation of the assets acquired and liabilities assumed, as well as the Company's previously held equity interest in the case of EPT, was based on the information that was available as of the acquisition date and the expectations and assumptions that have been deemed reasonable by the Company's management.

In performing these valuations, the Company used independent appraisals and discounted cash flows and other factors as the best evidence of fair value. The key underlying assumptions of the discounted cash flows were projected revenues, gross margin expectations and operating cost estimates. There are inherent uncertainties and management judgment required in these determinations. No assurance can be given that the underlying assumptions will occur as projected. The fair value measurements of the assets acquired and liabilities assumed were based on valuations involving significant unobservable inputs, or Level 3 in the fair value hierarchy.

3. INVENTORIES

Inventories consist of the following:

(In thousands)	June 29, 2013		December 31, 2012
Raw materials	$	27,040	$	27,720
Work-in process	14,443		10,242
Finished goods(a)	56,215		60,667
Supplies	442		515
Total inventories	$	98,140	$	99,144

(a) Includes consignment inventories held by customers for $6.2 million and $5.2 million at June 29, 2013 and December 31, 2012, respectively.

4. EARNINGS PER COMMON SHARE

The following table presents a reconciliation of the denominators used in the computation of basic and diluted earnings per common share (EPS):

	Three months ended		Six months ended
(In thousands)	June 29, 2013	June 30, 2012	June 29, 2013	June 30, 2012
Basic—weighted common shares outstanding	139,255	137,303	139,140	136,953
Weighted common shares assumed upon exercise of stock options and vesting of restricted common stock	496	893	651	1,168
Diluted—weighted common shares and common shares equivalent outstanding	139,751	138,196	139,791	138,121

10

The Company excluded the following shares underlying stock-based awards from the calculations of diluted EPS because their inclusion would have been anti-dilutive for the three and six months ended June 29, 2013 and June 30, 2012:

	Three months ended		Six months ended
(In thousands)	June 29, 2013	June 30, 2012	June 29, 2013	June 30, 2012
Shares excluded from calculations of diluted EPS	1,580	2,422	1,580	2,074

5. FAIR VALUE

Financial Assets Measured at Fair Value on a Recurring Basis

The following table presents the Company’s financial assets that are measured at fair value on a recurring basis at June 29, 2013 and December 31, 2012. Level 1 inputs are based on quoted prices in active markets accessible at the reporting date for identical assets and liabilities. Level 2 inputs are based on quoted prices for similar instruments in active markets and quoted prices for identical or similar instruments in markets that are not active, or model-based valuation techniques for which all significant assumptions are observable in a market.

	June 29, 2013								December 31, 2012
(In thousands)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents
Commercial paper	$	—	$	79,991	$	—	$	79,991	$	—	$	59,980	$	—	$	59,980
Money market fund deposits	38,065		—		—		38,065		73,026		—		—		73,026
Short-term investments
Commercial paper	—		—		—		—		—		19,995		—		19,995
Total assets measured and recorded at fair value	$	38,065	$	79,991	$	—	$	118,056	$	73,026	$	79,975	$	—	$	153,001
Liabilities:
Foreign exchange forward contracts	$	—	$	1,074	$	—	$	1,074	$	—	$	4,603	$	—	$	4,603
Total liabilities measured and recorded at fair value	$	—	$	1,074	$	—	$	1,074	$	—	$	4,603	$	—	$	4,603

The following table provides information about derivative positions held by the Company as of June 29, 2013 and December 31, 2012:

	June 29, 2013						December 31, 2012
(In thousands)	Gross amounts of recognized liabilities		Gross amounts offset in the condensed consolidated balance sheet		Net amount of liabilities in the condensed consolidated balance sheet		Gross amounts of recognized liabilities		Gross amounts offset in the condensed consolidated balance sheet		Net amount of liabilities in the condensed consolidated balance sheet
Derivatives	$	1,224	$	150	$	1,074	$	4,730	$	127	$	4,603

Gains and losses associated with derivatives are recorded in "Other income, net" in the condensed consolidated statements of operations. (Losses) gains associated with derivative instruments not designated as hedging instruments were as follows:

	Three months ended					Six months ended
(In thousands)	June 29, 2013			June 30, 2012		June 29, 2013			June 30, 2012
(Losses) gains on forward currency contracts	$	(1,074	)	$	777	$	(4,428	)	$	(2,158	)

6. SEGMENT REPORTING

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The Company’s financial reporting segments are Contamination Control Solutions (CCS), Microenvironments (ME) and Specialty Materials (SMD), each of which provide unique products and services, are separately managed and have separate financial information evaluated regularly by the Company’s chief operating decision maker in determining resource allocation and assessing performance.

• CCS: provides a wide range of products and subsystems that purify, monitor and deliver critical liquids and gases used in the semiconductor manufacturing process.

• ME: provides products that protect wafers, reticles and electronic components at various stages of transport, processing and storage related to semiconductor manufacturing.

• SMD: provides specialized graphite components used in semiconductor equipment and offers low-temperature, plasma-enhanced chemical vapor deposition coatings of critical components of semiconductor manufacturing equipment used in various stages of the manufacturing process as well as graphite and silicon carbide for certain critical industrial markets.

Inter-segment sales are not significant. Segment profit is defined as net sales less direct segment operating expenses, excluding certain unallocated expenses, consisting mainly of general and administrative costs for the Company’s human resources, finance and information technology functions as well as interest expense, and amortization of intangible assets.

Summarized financial information for the Company’s reportable segments is shown in the following table:

	Three months ended				Six months ended
(In thousands)	June 29, 2013		June 30, 2012		June 29, 2013		June 30, 2012
Net sales
CCS	$	114,634	$	123,144	$	218,595	$	238,696
ME	45,869		44,565		90,001		85,270
SMD	17,041		20,524		34,018		39,670
Total net sales	$	177,544	$	188,233	$	342,614	$	363,636

	Three months ended				Six months ended
(In thousands)	June 29, 2013		June 30, 2012		June 29, 2013		June 30, 2012
Segment profit
CCS	$	28,581	$	34,683	$	50,659	$	66,752
ME	9,364		8,523		18,689		14,051
SMD	1,900		4,404		4,116		9,072
Total segment profit	$	39,845	$	47,610	$	73,464	$	89,875

The following table reconciles total segment profit to operating income:

	Three months ended						Six months ended
(In thousands)	June 29, 2013			June 30, 2012			June 29, 2013			June 30, 2012
Total segment profit	$	39,845		$	47,610		$	73,464		$	89,875
Amortization of intangible assets	(2,359		)	(2,420		)	(4,646		)	(4,870		)
Unallocated general and administrative expenses	(11,099		)	(13,579		)	(22,184		)	(26,637		)
Operating income	26,387			31,611			46,634			58,368
Other income, net	(910		)	(641		)	(2,258		)	(805		)
Income before income taxes and equity in net income of affiliates	$	27,297		$	32,252		$	48,892		$	59,173

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis of the Company’s condensed consolidated financial condition and results of operations should be read along with the condensed consolidated financial statements and the accompanying notes to the condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q. Some of the information contained in this discussion and analysis or set forth elsewhere in this Quarterly Report on Form 10-Q includes forward-looking statements that involve risks and uncertainties. You should review the section entitled “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2012 as well as in our Quarterly Reports on Form 10-Q and Current Reports on Form 8-K for a discussion of important factors that could cause actual results to differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.

Overview

This overview is not a complete discussion of the Company’s financial condition, changes in financial condition and results of operations; it is intended merely to facilitate an understanding of the most salient aspects of its financial condition and operating performance and to provide a context for the detailed discussion and analysis that follows and must be read in its entirety in order to fully understand the Company’s financial condition and results of operations.

Entegris, Inc. is a leading provider of a wide range of products and services for purifying, protecting and transporting critical materials used in processing and manufacturing in the microelectronics and other high-technology industries. Entegris derives most of its revenue from the sale of products and services to the semiconductor and related industries. The Company’s customers consist primarily of semiconductor manufacturers, semiconductor equipment and materials suppliers as well as thin film transistor-liquid crystal display (TFT-LCD) and hard disk manufacturers, which are served through direct sales efforts, as well as sales and distribution relationships, in the United States, Asia, Europe and the Middle East.

The Company offers a diverse product portfolio which includes more than 17,000 standard and customized products that it believes provide the most comprehensive offering of products and services to maintain the purity and integrity of critical materials used by the semiconductor and other high-technology industries. Certain of these products are unit-driven and consumable products that rely on the level of semiconductor manufacturing activity to drive growth, while others are capital-expenditure driven and rely on expansion of manufacturing capacity to drive growth. The Company’s unit-driven and consumable products includes membrane-based liquid filters and housings, metal-based gas filters, resin-based gas purifiers, wafer shippers, disk-shipping containers and test assembly and packaging products and consumable graphite and silicon carbide components used in plasma etch, ion implant and chemical vapor deposition processes in semiconductor manufacturing. The Company’s capital expense-driven products include components, systems and subsystems that use electro-mechanical, pressure differential and related technologies to permit semiconductor and other electronics manufacturers to monitor and control the flow and condition of process liquids used in these manufacturing processes, and process carriers that protect the integrity of in-process wafers.

The Company’s fiscal year is the calendar period ending each December 31. The Company’s fiscal quarters consist of 13-week or 14-week periods that end on Saturday. The Company’s fiscal quarters in 2013 end March 30, 2013, June 29, 2013, September 28, 2013 and December 31, 2013. Unaudited information for the three and six months ended June 29, 2013 and June 30, 2012 and the financial position as of June 29, 2013 and December 31, 2012 are included in this Quarterly Report on Form 10-Q.

Forward-Looking Statements

The information in this Management’s Discussion and Analysis of Financial Condition and Results of Operations, except for the historical information, contains forward-looking statements. These statements are subject to risks and uncertainties and to the cautionary statement set forth above. These forward-looking statements could differ materially from actual results. The Company assumes no obligation to publicly release the results of any revision or updates to these forward-looking statements to reflect future events or unanticipated occurrences. This discussion and analysis should be read in conjunction with the condensed consolidated financial statements and the related notes thereto, which are included elsewhere in this report.

Key operating factors Key factors, which management believes have the largest impact on the overall results of operations of Entegris, Inc., include:

• Level of sales Since a significant portion of the Company’s product costs (except for raw materials, purchased components and direct labor) are largely fixed in the short to medium term, an increase or decrease in sales affects gross profits and overall profitability significantly. Also, increases or decreases in sales and operating profitability affect certain costs such as incentive compensation and commissions, which are highly

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variable in nature. The Company’s sales are subject to the effects of industry cyclicality, technological change, substantial competition, pricing pressures and foreign currency fluctuation.

• Variable margin on sales The Company’s variable margin on sales is determined by selling prices and the costs of manufacturing and raw materials. This is also affected by a number of factors, which include the Company’s sales mix, purchase prices of raw material (especially polymers, stainless steel and purchased components), competition, both domestic and international, direct labor costs, and the efficiency of the Company’s production operations, among others.

• Fixed cost structure The Company’s operations include a number of large fixed or semi-fixed cost components, which include salaries, indirect labor and benefits, facility costs, lease expense, and depreciation and amortization. It is not possible to vary these costs easily in the short-term as volumes fluctuate. Accordingly, increases or decreases in sales volume can have a large effect on the usage and productivity of these cost components, resulting in a large impact on the Company’s profitability.

Overall Summary of Financial Results for the Three Months and Six Months Ended June 29, 2013

For the three months ended June 29, 2013, net sales decreased by $10.7 million, or 6%, to $177.5 million compared to $188.2 million for the three months ended June 30, 2012. Net sales for the first six months of 2013 were $342.6 million, down 6% from $363.6 million in the comparable year-ago period. The year-over-year decline in net sales primarily reflected continued softness in semiconductor industry spending compared to the first half of 2012. The trends in the semiconductor industry remained mixed. Sequentially, overall demand in the semiconductor industry improved, but the level and extent of the strength was not uniform. There was strong demand from leading edge fabs, although in aggregate utilization rates remained well below peak levels for the industry.

The sales decrease for the three-month and six-month periods ended June 29, 2013 included unfavorable foreign currency translation effects of $4.8 million and $7.9 million, respectively, primarily related to the weakening of the Japanese yen versus the U.S. dollar. Excluding this factor, net sales decreased 3% and 4% for the three-month and six-month periods in 2013 when compared to the year-ago periods.

Primarily reflecting the year-over-year sales decrease, the Company reported a lower gross profit in the second quarter and first half of 2013 when compared to the comparable year-ago periods. The decrease in sales was the primary factor underlying the decline in gross profit. The Company’s gross margin rate for the second quarter was 43.7% compared to 44.0% in the year-ago period, while gross margin for the first six months of 2013 was 42.2% compared to 43.7% in the comparable period a year ago. Operating costs, consisting of selling, general and administrative (SG&A) and engineering, research and development (ER&D) costs were flat for the second quarter of 2013 when compared to the year-ago quarter. Operating costs for the first half of 2013 fell 2% compared to the first half of 2012, slightly offsetting the decrease in gross profit.

The Company’s effective tax rate decreased to 26.0% in 2013, compared to 33.2% in 2012. The effective tax rate in 2013 included a $1.3 million benefit associated with the reinstatement of the U.S. federal credit for increasing research expenditures, as retroactively signed into law and recorded by the Company in the first quarter of 2013.

The Company’s operating segments experienced varied net sales results for the three-month and six-month periods as described in greater detail below.

As a result of the aforementioned factors, the Company reported net income of $19.8 million, or $0.14 per diluted share, for the quarter ended June 29, 2013 compared to net income of $21.7 million, or $0.16 per diluted share, in the quarter ended June 30, 2012. For the six-month period ended June 29, 2013, net income was $36.2 million, or $0.26 per diluted share, compared to net income of $39.5 million, or $0.29 per diluted share, in the year-ago period.

During the six-month period ended June 29, 2013, the Company’s operating activities provided net cash flow of $42.3 million. Capital expenditures were $34.1 million for the period. Cash and cash equivalents were $343.4 million at June 29, 2013 compared with cash and cash equivalents, and short-term investments of $350.4 million at December 31, 2012. The Company had no outstanding short-term or long-term debt at June 29, 2013 or December 31, 2012.

Critical Accounting Policies

Management’s discussion and analysis of financial condition and results of operations are based upon the Company’s condensed consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these condensed consolidated financial statements requires the Company to make estimates, assumptions and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and

14

related disclosure of contingent assets and liabilities. Actual results may differ from these estimates under different assumptions or conditions.

The critical accounting policies affected most significantly by estimates, assumptions and judgments used in the preparation of the Company’s condensed consolidated financial statements are described in Item 7 of its Annual Report on Form 10-K for the year ended December 31, 2012 filed with the Securities and Exchange Commission. On an ongoing basis, the Company evaluates the critical accounting policies used to prepare its consolidated financial statements, including, but not limited to, those related to accounts receivable-related valuation allowances, inventory valuation, impairment of long-lived assets, and income taxes. There have been no material changes in these aforementioned critical accounting policies.

Three and Six Months Ended June 29, 2013 Compared to Three and Six Months Ended June 30, 2012 and Three Months Ended March 30, 2013

The following table compares operating results for the three months ended June 29, 2013 with results for the three months ended June 30, 2012 and March 30, 2013 and the six months ended June 29, 2013 with the results for the six months ended June 30, 2012, both in absolute dollars and as a percentage of net sales, for each caption.

	Three months ended															Six months ended
(Dollars in thousands)	June 29, 2013					June 30, 2012					March 30, 2013					June 29, 2013					June 30, 2012
Net sales	$	177,544		100.0	%	$	188,233		100.0	%	$	165,070		100.0	%	$	342,614		100.0	%	$	363,636		100.0	%
Cost of sales	99,974			56.3		105,487			56.0		97,942			59.3		197,916			57.8		204,646			56.3
Gross profit	77,570			43.7		82,746			44.0		67,128			40.7		144,698			42.2		158,990			43.7
Selling, general and administrative expenses	35,397			19.9		35,989			19.1		32,421			19.6		67,818			19.8		71,037			19.5
Engineering, research and development expenses	13,427			7.6		12,726			6.8		12,173			7.4		25,600			7.5		24,715			6.8
Amortization of intangible assets	2,359			1.3		2,420			1.3		2,287			1.4		4,646			1.4		4,870			1.3
Operating income	26,387			14.9		31,611			16.8		20,247			12.3		46,634			13.6		58,368			16.1
Other income, net	(910		)	(0.5	)	(641		)	(0.3	)	(1,348		)	(0.8	)	(2,258		)	(0.7	)	(805		)	(0.2	)
Income before income taxes and equity in net income of affiliates	27,297			15.4		32,252			17.1		21,595			13.1		48,892			14.3		59,173			16.3
Income tax expense	7,516			4.2		10,579			5.6		5,198			3.1		12,714			3.7		19,644			5.4
Equity in net income of affiliates	—			—		—			—		—			—		—			—		(3		)	—
Net income	$	19,781		11.1	%	$	21,673		11.5	%	$	16,397		9.9	%	$	36,178		10.6	%	$	39,532		10.9	%

Net sales For the three months ended June 29, 2013, net sales declined by $10.7 million, or 6%, to $177.5 million compared to $188.2 million for the three months ended June 30, 2012. Net sales for the first six months of 2013 were $342.6 million, down 6% from $363.6 million in the comparable year-ago period. The year-over-year declines in net sales primarily reflected

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continued softness in semiconductor industry spending compared to the first half of 2012. The trends in the semiconductor industry remained mixed. Sequentially, overall demand in the semiconductor industry improved, but the level and extent of the strength was not uniform. There was strong demand from leading edge fabs, although in aggregate utilization rates remained well below peak levels for the industry.

The Company’s operating segments experienced varied sales results. See “Segment Analysis” included below in this section for additional detail.

Demand drivers for the Company’s business primarily consist of semiconductor fab utilization and production (unit-driven) as well as capital spending for new or upgraded semiconductor fabrication equipment and facilities (capital-driven). The Company analyzes sales of its products by these two key drivers. Sales of unit-driven products in the quarter ended June 29, 2013 decreased 4%, while sales of capital-driven products fell 10%. In the quarter ended June 29, 2013, sales of unit-driven products represented 67% and capital-driven products represented 33% of total sales. For both the second quarter of 2012 and first quarter of 2013, this split was 66%/34%.

The sales decreases for the three-month and six-month periods ended June 29, 2013 included unfavorable foreign currency translation effects of $4.8 million and $7.9 million, respectively, primarily related to the weakening of the Japanese yen versus the U.S. dollar. Excluding this factor, net sales decreased 3% and 4% for the three-month and six-month periods in 2013 when compared to the year-ago periods.

On a geographic basis, total sales in the second quarter of 2013 to North America were 29%, Asia (excluding Japan) 43%, Europe 14% and Japan 14% compared to prior year second quarter figures as follows: North America 30%, Asia (excluding Japan) 39%, Europe 12% and Japan 19%. Sales in North America and Japan fell 10% and 29%, respectively, while sales increased 4% and 11% in Asia (excluding Japan) and Europe, respectively, in the second quarter of 2013 compared to a year ago. Slightly over one-half of the decrease in Japan sales was due to the fluctuations in exchange rates noted above.

On a sequential basis, net sales increased 8% from $165.1 million in the first quarter of 2013 and reflected modest improvement in sales for both unit-driven and capital-driven products. Sales of unit-driven products increased 8%, while sales of capital-driven products rose 6%. On a geographic basis, net sales to Asia (excluding Japan), Japan, North America, and Europe increased 8%, 1%, 8% and 14%, respectively. The sequential sales increase included an unfavorable foreign currency translation effect of $2.8 million, due primarily to the quarter-over-quarter weakening of the Japanese yen versus the U.S. dollar. Excluding this factor, net sales improved 9% on a sequential quarter basis.

Other than the foreign currency effects noted above, the Company believes its sales changes are primarily volume driven. Based on the information available, the Company believes it is generally improving or maintaining market share for its products and that the effect of selling price erosion has been nominal. Additionally, as no single customer accounts for more than 10% of the Company’s revenue, the changes in sales are not driven by any one particular customer or group of customers.

Gross profit Gross profit in the three months ended June 29, 2013 decreased to $77.6 million, down from $82.7 million for the three months ended June 30, 2012. For the first six months of 2013, gross profit was $144.7 million, down from $159.0 million recorded in the first six months of 2012. The year-over-year sales decreases primarily account for the declines in gross profit.

As a percentage of net sales, the gross margin rate for the second quarter of 2013 was 43.7% versus 44.0% for the second quarter of 2012. For the first six months of 2013, the Company's gross margin rate was 42.2% compared to 43.7% for the comparable period a year ago. The lower comparative gross margin percentages are due to lower factory utilization associated with the Company's lower sales levels and slightly unfavorable sales mix.

On a sequential basis, gross profit increased by $10.4 million to $77.6 million in the second quarter of 2013. The gross margin rate of 43.7% for the second quarter of 2013 increased from 40.7% in the first quarter of 2013. The gross profit and gross margin improvements reflect the increase in sales and a favorable sales mix.

Selling, general and administrative expenses. Selling, general and administrative (SG&A) expenses were $35.4 million in the three months ended June 29, 2013, down 2% from the comparable three-month period a year earlier. Employee costs, which comprises about two-thirds of overall SG&A expense, decreased $0.3 million. SG&A expenses for the quarter ended June 29, 2013 included a $0.7 million reduction in SG&A expense related to the sale of a building classified as assets held for sale, consisting of the gain on sale thereof and an adjustment to the real estate tax accrual for the building.

For the first six months of 2013, SG&A expenses decreased by $3.2 million, or 5% to $67.8 million compared to $71.0 million a year earlier. For the first six months of 2013, SG&A costs, as a percent of net sales, increased to 19.8% from 19.5% a year ago, reflecting the decrease in net sales. Employee costs, which make up about two-thirds of SG&A expenses, decreased by

16

$0.8 million for the six-month period. The decrease also reflected a bad debt expense decline of $0.7 million and the $0.7 million reduction in SG&A expense related to the sale of a building noted above.

Engineering, research and development expenses Engineering, research and development (ER&D) expenses related to the support of current product lines and the development of new products and manufacturing technologies were $13.4 million in the three months ended June 29, 2013 compared to $12.7 million in the year-ago period. The $0.7 million increase in ER&D expense was due to slightly higher employee costs. ER&D expenses increased 4% to $25.6 million in the first six months of 2013 compared to $24.7 million in the year-ago six-month period, also due to higher employee costs. For the first six months of 2013 ER&D expenses, as a percent of net sales, increased to 7.5% from 6.8%, mainly reflecting the decrease in net sales.

Other income, net Other income, net was $0.9 million and $2.3 million in the three-month and six-month periods ended June 29, 2013, respectively, which are mainly due to foreign currency transaction gains.

In the three and six months ended June 30, 2012, other income, net was $0.6 million and $0.8 million respectively, mainly reflecting a $1.5 million gain recorded in the second quarter related to the remeasurement of the previously held 50% equity investment in a Taiwan joint venture entity in which the Company's acquired a 100% interest in April 2012. This gain was partly offset by foreign currency transactions losses related to the remeasurement of yen-denominated assets and liabilities held by the Company.

Income tax expense The Company recorded income tax expense of $7.5 million and $12.7 million, respectively, in the three and six months ended June 29, 2013 compared to income tax expense of $10.6 million and $19.6 million in the three and six months ended June 30, 2012. The year-to-date effective tax rate was 26.0% in the 2013 period, compared to 33.2% in the 2012 period. The 2013 rate reflects a base rate of approximately 27% before the recognition of a discrete tax benefit.

In 2013, the Company's effective tax rate was lower than the U.S. statutory rate mainly due to lower tax rates in certain of the Company's taxable jurisdictions and a discrete tax benefit. On January 2, 2013 President Obama signed into law H.R. 8, the American Taxpayer Relief Act of 2012 (the Act). The Act reinstated the federal credit for increasing research expenditures retroactively to the beginning of 2012. Accordingly, the Company recognized a discrete tax benefit of approximately $1.3 million related to the credit during the first quarter of 2013. None of the other Act provisions are expected to have a material impact on the financial statements.

In 2012, the Company's effective tax rate was lower than the U.S. statutory rate due to lower tax rates in certain of the Company's taxable jurisdictions.

Net income The Company recorded net incomeof $19.8 million, or $0.14 per diluted share, in the three-month period ended June 29, 2013 compared to net income of $21.7 million, or $0.16 per diluted share, in the three-month period ended June 30, 2012. For the six months ended June 29, 2013, net income was $36.2 million, or $0.26 per diluted share, compared to net income of $39.5 million, or $0.29 per diluted share, in the comparable period a year ago. The reductions in net income and diluted earnings per share mainly reflect the Company's lower net sales and corresponding decreases in gross profit, offset partly by lower SG&A expenses and a lower effective tax rate.

Non-GAAP Measures Information The Company’s condensed consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States (GAAP). The Company also utilizes certain non-GAAP financial measures as a complement to financial measures provided in accordance with GAAP in order to better assess and reflect trends affecting the Company’s business and results of operations. See “Non-GAAP Information” included below in this section for additional detail, including the reconciliation of GAAP measures to the Company’s non-GAAP measures.

The Company’s non-GAAP financial measures are Adjusted EBITDA and Adjusted Operating Income, together with related measures thereof, and non-GAAP Earnings Per Share.

Adjusted EBITDA decreased 12% to $36.1 million in the three-month period ended June 29, 2013, compared to $41.1 million in the three-month period ended June 30, 2012. Adjusted EBITDA, as a percent of net sales, decreased to 20.3% from 21.8% a year earlier. Adjusted Operating Income decreased 16% to $28.7 million in the three-month period ended June 29, 2013, compared to $34.0 million in the three-month period ended June 30, 2012. Adjusted Operating Income, as a percent of net sales, decreased to 16.2% from 18.1% a year earlier. Non-GAAP Earnings Per Share decreased 6% to $0.15 in the three-month period ended June 29, 2013, compared to $0.16 in the three-month period ended June 30, 2012.

Adjusted EBITDA decreased 14% to $65.9 million in the six-month period ended June 29, 2013, compared to $76.8 million in the six-month period ended June 30, 2012. Adjusted EBITDA, as a percent of net sales, decreased to 19.2% from 21.1% a year earlier. Adjusted Operating Income decreased 19% to $51.3 million in the six-month period ended June 29, 2013, compared to

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$63.2 million in the six-month period ended June 30, 2012. Adjusted Operating Income, as a percent of net sales, decreased to 15.0% from 17.4% a year earlier. Non-GAAP Earnings Per Share decreased 7% to $0.28 in the six-month period ended June 29, 2013, compared to $0.30 in the six-month period ended June 30, 2012.

Segment Analysis

The Company reports its financial performance based on three reporting segments. The following is a discussion on the results of operations of these three business segments. See Note 6 “Segment Reporting” to the condensed consolidated financial statements for additional information on the Company’s three segments.

The following table presents selected net sales and segment profit data for the Company’s three segments for the three and six months ended June 29, 2013 and June 30, 2012.

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	Three months ended						Six months ended
(In thousands)	June 29, 2013		June 30, 2012		March 30, 2013		June 29, 2013		June 30, 2012
Contamination Control Solutions
Net sales	$	114,634	$	123,144	$	103,961	$	218,595	$	238,696
Segment profit	28,581		34,683		22,078		50,659		66,752
Microenvironments
Net sales	$	45,869	$	44,565	$	44,132	$	90,001	$	85,270
Segment profit	9,364		8,523		9,325		18,689		14,051
Specialty Materials
Net sales	$	17,041	$	20,524	$	16,977	$	34,018	$	39,670
Segment profit	1,900		4,404		2,216		4,116		9,072

Contamination Control Solutions (CCS)

For the second quarter of 2013, CCS net sales decreased 7% to $114.6 million, from $123.1 million in the comparable period last year. The decline included unfavorable foreign currency translation effects of $4.3 million, primarily related to weakness in the Japanese yen; excluding the unfavorable foreign currency translation effect, CCS sales fell 4%. The year-over-year sales decrease reflected lower sales of fluid components and systems, and gas filtration products. Sales of liquid filtration products were flat. CCS reported a segment profit of $28.6 million in the second quarter of 2013, down 18% from $34.7 million in the year-ago period, due to the decrease in sales volume, a slightly unfavorable sales mix and a 6% increase in operating expenses.

For the six months ended June 29, 2013, CCS net sales decreased 8% to $218.6 million from $238.7 million in the comparable period last year. The decline included unfavorable foreign currency translation effects of $6.9 million, primarily related to weakness in the Japanese yen; excluding the unfavorable foreign currency translation effect, CCS sales for the first half of 2013 fell 6%. The year-to-date revenue decrease also was due to lower sales of fluid components and systems, and gas filtration products. Sales of liquid filtration products decreased nominally. For the six months ended June 29, 2013, CCS reported a segment profit of $50.7 million compared to $66.8 million in the comparable year-ago period. The decrease in gross profit associated with lower sales levels, an unfavorable sales mix and a 2% increase in operating expenses account for the decline.

Primarily due to higher sales of gas filtration and liquid filtration products, CCS sales were up 10% on a sequential basis from the first quarter of 2013. Second quarter sales included unfavorable foreign currency translation effects of $2.4 million, primarily related to weakness in the Japanese yen and Korean won; net of such effects, CCS sales rose 13%. The increase in gross profit associated with higher sales levels, an improved sales mix, offset partly by a 12% increase in operating expenses account for the 29% improvement in segment profit from $22.1 million in the first quarter to $28.6 million in the second quarter.

Microenvironments (ME)

For the first quarter of 2013, ME net sales increased 3% to $45.9 million, from $44.6 million in the comparable period last year. The revenue increase primarily reflected higher sales of 300mm wafer process products. ME reported a segment profit of $9.4 million in the first quarter of 2013 compared to a $8.5 million segment profit in the year-ago period. The increase in gross profit associated with higher sales levels and an improved sales mix, partly offset by a 4% increase in operating expenses, mainly due to higher product management costs, accounted for the increase in segment profit.

For the six months ended June 29, 2013, ME net sales increased 6% to $90.0 million from $85.3 million in the comparable period last year. The year-to-date increase in sales reflected higher sales of 300mm wafer process and data storage products. ME reported a segment profit of $18.7 million in the first half of 2013 compared to a segment profit of $14.1 million in the year-ago period. The increase in gross profit associated with higher sales levels and an improved sales mix, along with flat operating expense levels, accounted for the increase in segment profit.

Sales were up 4% on a sequential basis from the first quarter of 2013, reflecting improved sales of 200mm process, shipper and lithography products, offset in part by lower sales of 300mm wafer process products. The increase in gross profit associated with higher sales levels and an improved sales mix was offset by a 12% increase in operating expense levels, leading to an essentially flat segment profit for the second quarter of 2013 compared to the first quarter.

Specialty Materials (SMD)

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For the second quarter of 2013, SMD net sales decreased 17%, to $17.0 million, from $20.5 million in the comparable period last year. The sales decrease mainly reflected lower demand for SMD’s high-margin specialty-coated products. SMD reported a segment profit of $1.9 million million in the first quarter of 2013, down 57%, compared to a segment profit of $4.4 million in the first quarter of 2012. The overall decline in sales, the negative effect of the change in sales mix, and operating expenses account for the reduction in segment profit.

For the six months ended June 29, 2013, SMD net sales decreased 14% to $34.0 million from $39.7 million in the comparable period last year. SMD reported a segment profit of $4.1 million for the six months ended June 29, 2013, down 54%, compared to a segment profit of $9.1 million million for the year-ago period. The overall decline in sales, the negative effect of the change in sales mix, and a 15% increase in operating expenses account for the reduction in segment profit.

Sales were flat on a sequential basis from the first quarter of 2013. However, lower factory utilization and a 16% increase in operating expenses offset the effect of a more favorable sales mix, leading to a 14% decrease in SMD segment profit.

Unallocated general and administrative expenses

Unallocated general and administrative expenses totaled $11.1 million in the second quarter of 2013 compared to $13.6 million in the second quarter of 2012. For the six months ended June 29, 2013, unallocated general and administrative expenses totaled $22.2 million compared to $26.6 million in the comparable period last year. Figures for both the three and six months ended June 29, 2013 included a $0.7 million reduction in unallocated general and administrative expenses related to the sale of a building classified as assets held for sale, consisting of the gain on sale thereof, and an adjustment to the real estate tax accrual for the building.

Liquidity and Capital Resources

Operating activities Cash flow provided by operating activities totaled $42.3 million in the six months ended June 29, 2013. Cash generated by operating activities in the first six-month period of 2013 was primarily the result of net income adjusted for non-cash expenses (such as depreciation, amortization and share-based compensation). The net impact of changes in operating assets and liabilities absorbed $19.7 million in operating cash flow, mainly reflecting increases in accounts receivable and inventories, and a decrease in accrued liabilities.

Accounts receivable increased by $19.5 million during the first six months of 2013, or $14.2 million net of foreign currency translation adjustments. The change mainly reflects an increase in sales levels and the Company’s days sales outstanding (DSO). The Company’s DSO was 56 days at June 29, 2013 compared to a historically-low 51 days at the beginning of the year.

Inventories at June 29, 2013 increased by $3.1 million during the first six months of 2013, but decreased by $1.0 million after taking into account the impact of foreign currency translation adjustments and the provision for excess and obsolete inventory, during the first six months of 2013. The increase reflects higher levels of raw materials and work-in-process offset partly by a reduction in the level of finished goods.

Accounts payable and accrued liabilities at June 29, 2013 were $5.4 million higher than at December 31, 2012, or $3.2 million net of foreign currency translation adjustments, mainly due to the payment of fiscal year 2012 incentive compensation during the first quarter of 2013. Income taxes payable increased by $7.5 million from December 31, 2012 to June 29, 2013.

Working capital at June 29, 2013 was $476.9 million, compared to $486.1 million as of December 31, 2012, and included $343.4 million in cash and cash equivalents, compared to cash and cash equivalents and short-term investments of $350.4 million as of December 31, 2012.

Investing activities Cash flow used in investing activities totaled $20.9 million in the six-month period ended June 29, 2013.

Acquisition of property and equipment totaled $34.1 million, which primarily reflected investments in equipment and tooling to manufacture 450mm wafer handling products and to establish an advanced membrane manufacturing and development center for critical filtration applications. As of June 29, 2013, the Company had outstanding capital purchase obligations of $20.4 million for the construction or purchase of plant and equipment not yet recorded in the Company’s condensed consolidated financial statements as the Company had not yet received the related goods or property. The Company expects its capital expenditures in 2013 to be approximately $60 million to $70 million, including approximately $40 million to complete the Company’s 450mm technology center and advanced membrane and coatings facility. Under the terms of its revolving credit facility, the Company is restricted from making capital expenditures in excess of $85 million during any fiscal year. The Company does not anticipate that this limit on capital expenditures will have an adverse effect on the Company’s operations.

For the six months ended June 29, 2013, the Company recorded proceeds of $20.0 million associated with the maturities of commercial paper classified as short-term investments as of December 31, 2012.

20

On April 1, 2013, the Company acquired substantially all the assets and liabilities of Jetalon Solutions, Inc. (Jetalon), a California-based supplier of fluid metrology products. The purchase price for Jetalon included cash consideration of $13.4 million paid by the Company at closing and earnout-based contingent consideration based on the performance of Jetalon in 2013, 2014 and 2015. The transaction is described in further detail in note 2 to the Company's condensed consolidated financial statements.

During the quarter ended June 29, 2013, the Company sold a building with a carrying value of $6.0 million and classified under assets held for sale for proceeds of $6.5 million.

Financing activities Cash used in financing activities totaled $2.1 million during the six-month period ended June 29, 2013, primarily reflecting proceeds received in connection with common shares issued under the Company’s employee stock purchase and stock option plans.

The Company received proceeds of $6.3 million in connection with common shares issued under the Company’s stock plans. Cash provided by financing activities was offset by the purchase of shares of the Company’s common stock at a total cost of $9.4 million under the stock repurchase program authorized by the Company’s Board of Directors in 2012, as described below.

On December 12, 2012, the Board of Directors authorized a repurchase program for 2013 covering up to an aggregate of $50 million of the Company’s common stock in open market transactions and in accordance with one or more pre-arranged stock trading plans established in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended. The repurchase program for 2013 will expire in December 2013 unless it is terminated or extended. The initial pre-arranged stock trading plan was established on February 19, 2013 and will expire August 19, 2013 and will cover the repurchase of up to $30 million of the registrant’s common stock.

The Company has a revolving credit facility maturing June 9, 2014, with a revolving credit commitment of $30.0 million. As of June 29, 2013, the Company had no outstanding borrowings and $0.2 million undrawn on outstanding letters of credit under the revolving credit facility. Through June 29, 2013, the Company was in compliance with all applicable financial covenants included in the terms of the revolving credit facility.

The Company also has lines of credit with two banks that provide for borrowings of Japanese yen for the Company’s Japanese subsidiary, equivalent to an aggregate of approximately $12.1 million. There were no outstanding borrowings under these lines of credit at June 29, 2013.

At June 29, 2013, the Company’s shareholders’ equity was $716.3 million, up 3% from $694.8 million at the beginning of the year. The increase reflected net income of $36.2 million, additional paid-in capital of $3.8 million associated with the Company’s share-based compensation expense, $6.3 million received in connection with common shares issued under the Company’s stock option and employee stock purchase plans, partially offset by the repurchase and retirement of its common stock of $9.4 million and foreign currency translation effects of $16.4 million, the latter of which is mainly associated with the weakening of the Japanese yen versus the U.S. dollar.

As of June 29, 2013, the Company’s sources of available funds were its cash and cash equivalents of $343.4 million, funds available under its revolving credit facility and international credit facilities and cash flow generated from operations.

The Company believes that its cash and cash equivalents, funds available under its revolving credit facility and international credit facilities and cash flow generated from operations will be sufficient to meet its working capital and investment requirements for at least the next twelve months. If available liquidity is not sufficient to meet the Company’s operating and debt service obligations as they come due, management will need to pursue alternative arrangements through additional equity or debt financing in order to meet the Company’s cash requirements. However, there can be no assurance that any such financing would be available on commercially acceptable terms.

The Company considers approximately $300 million of the undistributed earnings of its foreign subsidiaries as of June 29, 2013 to be indefinitely reinvested. As of June 29, 2013, the amount of cash and cash equivalents associated with indefinitely reinvested foreign earnings was $140.2 million. Amounts held by foreign subsidiaries are generally subject to U.S. income taxation on repatriation to the United States. The Company does not anticipate the need to repatriate funds to the United States to satisfy domestic liquidity needs arising in the ordinary course of business and believes its existing balances of domestic cash and cash equivalents and operating cash flows will be sufficient to meet the Company’s domestic cash needs for the next twelve months.

New Accounting Pronouncements

Recently adopted accounting pronouncements Refer to note 1 to the Company’s condensed consolidated financial statements for a discussion of recently adopted accounting pronouncements.

Recently issued accounting pronouncements At this time, the Company does not anticipate that recently issued accounting guidance that has not yet been adopted will have a material impact on its condensed consolidated financial statements. Refer to note 1 to the Company’s condensed consolidated financial statements for a discussion of recently issued accounting pronouncements.

Non-GAAP Information The Company’s consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States (GAAP).

The Company also provides certain non-GAAP financial measures as a complement to financial measures provided in accordance with GAAP in order to better assess and reflect trends affecting the Company’s business and results of operations. Regulation G, “Conditions for Use of Non-GAAP Financial Measures,” and other regulations under the Securities Exchange Act of 1934, as amended, define and prescribe the conditions for use of certain non-GAAP financial information. The Company provides non-GAAP financial measures of Adjusted EBITDA and Adjusted Operating Income together with related measures thereof, and non-GAAP Earnings Per Share (EPS).

Adjusted EBITDA, a non-GAAP term, is defined by the Company as net income attributable to Entegris, Inc. before (1) equity in net income of affiliates, (2) income tax expense (3) other income, net, (4) amortization of intangible assets and (5) depreciation. Adjusted Operating Income, another non-GAAP term, is defined by the Company as its Adjusted EBITDA less depreciation. The Company also utilizes non-GAAP measures whereby Adjusted EBITDA and Adjusted Operating Income are each divided by the Company’s net sales to derive Adjusted EBITDA Margin and Adjusted Operating Margin, respectively.

Non-GAAP EPS, a non-GAAP term, is defined by the Company as net income before (1) amortization of intangible assets, (2) gain associated with equity investments and (3) the tax effect of that adjustment to net income.

The Company provides supplemental non-GAAP financial measures to better understand and manage its business and believes these measures provide investors and analysts additional and meaningful information for the assessment of the Company’s ongoing results. Management also uses these non-GAAP measures to assist in the evaluation of the performance of its business segments and to make operating decisions.

Management believes the Company’s non-GAAP measures help indicate the Company’s baseline performance before certain gains, losses or other charges that may not be indicative of the Company’s business or future outlook and offer a useful view of business performance in that the measures provide a more consistent means of comparing performance. The Company believes the non-GAAP measures aid investors’ overall understanding of the Company’s results by providing a higher degree of transparency for such items and providing a level of disclosure that will help investors understand how management plans, measures and evaluates the Company’s business performance. Management believes that the inclusion of non-GAAP measures provides consistency in its financial reporting and facilitates investors’ understanding of the Company’s historical operating trends by providing an additional basis for comparisons to prior periods.

Management uses Adjusted EBITDA and Adjusted Operating Income to assist it in evaluations of the Company’s operating performance by excluding items that management does not consider as relevant in the results of its ongoing operations. Internally, these non-GAAP measures are used by management for planning and forecasting purposes, including the preparation of internal budgets; for allocating resources to enhance financial performance; for evaluating the effectiveness of operational strategies; and for evaluating the Company’s capacity to fund capital expenditures, secure financing and expand its business.

In addition, and as a consequence of the importance of these non-GAAP financial measures in managing its business, the Company’s Board of Directors uses non-GAAP financial measures in the evaluation process to determine management compensation.

The Company believes that certain analysts and investors use Adjusted EBITDA, Adjusted Operating Income and non-GAAP EPS as supplemental measures to evaluate the overall operating performance of firms in the Company’s industry. Additionally, lenders or potential lenders use Adjusted EBITDA measures to evaluate the Company’s creditworthiness.

The presentation of non-GAAP financial measures is not meant to be considered in isolation, as a substitute for, or superior to, financial measures or information provided in accordance with GAAP. Management strongly encourages investors to review the Company’s consolidated financial statements in their entirety and to not rely on any single financial measure.

Management notes that the use of non-GAAP measures has limitations:

First, non-GAAP financial measures are not standardized. Accordingly, the methodology used to produce the Company’s non-GAAP financial measures is not computed under GAAP and may differ notably from the methodology used by other companies. For example, the Company’s non-GAAP measure of Adjusted EBITDA may not be directly comparable to EBITDA or an adjusted EBITDA measure reported by other companies.

Second, the Company’s non-GAAP financial measures exclude items such as amortization and depreciation that are recurring. Amortization of intangibles and depreciation have been, and will continue to be for the foreseeable future, a significant recurring expense with an impact upon the Company’s results of operations, notwithstanding the lack of immediate impact upon cash flows.

Third, there is no assurance the Company will not have future restructuring activities, gains or losses on sale of equity investments, or similar items and, therefore, may need to record additional charges (or credits) associated with such items, including the tax effects thereon. The exclusion of these items from the Company’s non-GAAP measures should not be construed as an implication that these costs are unusual, infrequent or non-recurring.

Management considers these limitations by providing specific information regarding the GAAP amounts excluded from these non-GAAP financial measures and evaluating these non-GAAP financial measures together with their most directly comparable financial measures calculated in accordance with GAAP. The calculations of Adjusted EBITDA, Adjusted Operating Income, and non-GAAP EPS, and reconciliations between these financial measures and their most directly comparable GAAP equivalents are presented below in the accompanying tables.

Reconciliation of GAAP Net income attributable to Entegris, Inc. to Adjusted operating income and Adjusted EBITDA

	Three Months Ended						Six Months Ended
(In thousands)	June 29, 2013			June 30, 2012			June 29, 2013			June 30, 2012
Net sales	$	177,544		$	188,233		$	342,614		$	363,636
Net income	$	19,781		$	21,673		$	36,178		$	39,532
Adjustments to net income
Equity in net income of affiliates	—			—			—			(3		)
Income tax expense	7,516			10,579			12,714			19,644
Other income, net	(910		)	(641		)	(2,258		)	(805		)
GAAP – Operating income	26,387			31,611			46,634			58,368
Amortization of intangible assets	2,359			2,420			4,646			4,870
Adjusted operating income	28,746			34,031			51,280			63,238
Depreciation	7,311			7,026			14,607			13,513
Adjusted EBITDA	$	36,057		$	41,057		$	65,887		$	76,751
Adjusted operating margin	16.2		%	18.1		%	15.0		%	17.4		%
Adjusted EBITDA – as a % of net sales	20.3		%	21.8		%	19.2		%	21.1		%

Reconciliation of GAAP Earnings per Share to Non-GAAP Earnings per Share

21

	Three Months Ended						Six Months Ended
(In thousands)	June 29, 2013			June 30, 2012			June 29, 2013			June 30, 2012
Net income	$	19,781		$	21,673		$	36,178		$	39,532
Adjustments to net income:
Amortization of intangible assets	2,359			2,420			4,646			4,870
Gain associated with equity investments	—			(1,522		)	—			(1,522		)
Tax effect of adjustments to net income	(851		)	(616		)	(1,675		)	(1,501		)
Non-GAAP net income	$	21,289		$	21,955		$	39,149		$	41,379
Diluted earnings per common share	$	0.14		$	0.16		$	0.26		$	0.29
Effect of adjustments to net income	0.01			0.00			0.02			0.01
Diluted non-GAAP earnings per common share	$	0.15		$	0.16		$	0.28		$	0.30

22

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Entegris’ principal financial market risks are sensitivities to interest rates and foreign currency exchange rates. The Company’s interest-bearing cash equivalents are subject to interest rate fluctuations. The Company’s cash equivalents are instruments with maturities of three months or less. A 100 basis point change in interest rates would potentially increase or decrease annual net income by approximately $2.2 million annually.

The cash flows and results of operations of the Company’s foreign-based operations are subject to fluctuations in foreign exchange rates. The Company occasionally uses derivative financial instruments to manage the foreign currency exchange rate risks associated with its foreign-based operations. At June 29, 2013, the Company had no net exposure to any foreign currency forward contracts.

Item 4. Controls and Procedures

(a) Evaluation of disclosure controls and procedures.

The Company’s management, including the Chief Executive Officer (CEO) and Chief Financial Officer (CFO), has conducted an evaluation of the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined under Rules 13a-15(e) and 15d-15(e) promulgated under the Securities Exchange Act of 1934 (the “1934 Act”)) as of June 29, 2013. The term “disclosure controls and procedures” means controls and other procedures of a company that are designed to ensure that information required to be disclosed by us in the reports that we file or submit under the 1934 Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the 1934 Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Based on management’s evaluation (with the participation of our CEO and CFO), as of June 29, 2013, its CEO and CFO have concluded that the disclosure controls and procedures used by the Company, were effective to provide reasonable assurance that information required to be disclosed by the Company in reports that it files or submits under the 1934 Act is recorded, processed, summarized, and reported within the time periods specified in U.S. Securities and Exchange Commission rules and forms, and is accumulated and communicated to management, including its principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure.

(b) Changes in internal control over financial reporting.

There has been no change in the Company’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the 1934 Act) during the most recently completed fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

23

PART II

OTHER INFORMATION

Item 1. Legal Proceedings

The Company is subject to various claims, legal actions, and complaints arising in the ordinary course of business. The Company believes the final outcome of these matters will not have a material adverse effect on its consolidated financial statements. The Company expenses legal costs as incurred.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

Issuer Purchases of Equity Securities

The following table provides information concerning shares of the Company’s Common Stock $0.01 par value per share, purchased during the three months ended June 29, 2013:

Period	(a) Total Number  of Shares Purchased(1)	(b) Average Price Paid per Share(1)		(c) Total Number  of Shares Purchased as Part of Publicly Announced Plans or Programs(1)	(d) Maximum Number (or Approximate Dollar Value) of Shares that May Yet Be Purchased Under the Plans or Programs(1)
March 31- April 30	262,370	$	9.53	262,370	$	43,722,606
May 1-31	154,504	$	9.71	154,504	$	42,222,634
June 1-29	164,770	$	9.74	164,770	$	40,617,763
Total	581,644	$	9.64	581,644	$	40,617,763

(1) On December 12, 2012, the Board of Directors authorized a repurchase program for 2013 covering up to an aggregate of $50.0 million of the Company’s common stock in open market transactions and in accordance with one or more pre-arranged stock trading plans established in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended. The repurchase program for 2013 will expire in December 2013 unless it is terminated or extended. The initial pre-arranged stock trading plan was established on February 19, 2013 and will expire August 19, 2013 and will cover the repurchase of up to $30 million of the registrant’s common stock.

24

Item 6. Exhibits

10.1	Amendment No. 1 to Executive Change in Control Agreement, dated April 26, 2013, between Entegris, Inc. and Bertrand Loy [Incorporated by reference to Exhibit 99.1 to Entegris, Inc. Current Report on Form 8-K filed with the Securities and Exchange Commission on April 26, 2013]
31.1	Certification of Chief Executive Officer Pursuant to Exchange Act Rule 13a-14(a).
31.2	Certification of Chief Financial Officer Pursuant to Exchange Act Rule 13a-14(a).
32.1	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

25

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	ENTEGRIS, INC.
Date: July 26, 2013	/s/ Gregory B. Graves
	Gregory B. Graves
	Executive Vice President and Chief Financial
	Officer (on behalf of the registrant and as
	principal financial officer)

26

EXHIBIT INDEX

10.1	Amendment No. 1 to Executive Change in Control Agreement, dated April 26, 2013, between Entegris, Inc. and Bertrand Loy [Incorporated by reference to Exhibit 99.1 to Entegris, Inc. Current Report on Form 8-K filed with the Securities and Exchange Commission on April 26, 2013]
31.1	Certification of Chief Executive Officer Pursuant to Exchange Act Rule 13a-14(a).
31.2	Certification of Chief Financial Officer Pursuant to Exchange Act Rule 13a-14(a).
32.1	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

27

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Bertrand Loy, certify that:

1. I have reviewed this Report on Form 10-Q of Entegris, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects, the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as
defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: July 26, 2013	/s/ Bertrand Loy
	Bertrand Loy
	Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Gregory B. Graves, certify that:

1. I have reviewed this Report on Form 10-Q of Entegris, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects, the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as
defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: July 26, 2013	/s/ Gregory B. Graves
	Gregory B. Graves
	Chief Financial Officer
	(Principal Financial Officer)

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q (the “Report”) of Entegris, Inc, a Delaware corporation (the “Company”), for the period ended June 29, 2013 as filed with the Securities and Exchange Commission on the date hereof, Bertrand Loy, President and Chief Executive Officer of the Company, and Gregory B. Graves, Chief Financial Officer of the Company, each hereby certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: July 26, 2013	/s/ Bertrand Loy
	Bertrand Loy
	Chief Executive Officer
	/s/ Gregory B. Graves
	Gregory B. Graves
	Chief Financial Officer

XML

Earnings Per Common Share (Tables)

6 Months Ended

Jun. 29, 2013

Reconcilation of Share Amount Used in Computaion of Basic and Diluted Earnings Per Share (EPS)

The following table presents a reconciliation of the denominators used in the computation of basic and diluted earnings per common share (EPS):

	Three months ended		Six months ended
(In thousands)	June 29, 2013	June 30, 2012	June 29, 2013	June 30, 2012
Basic—weighted common shares outstanding	139,255	137,303	139,140	136,953
Weighted common shares assumed upon exercise of stock options and vesting of restricted common stock	496	893	651	1,168
Diluted—weighted common shares and common shares equivalent outstanding	139,751	138,196	139,791	138,121

Shares Excluded Underlying Stock Based Awards from Calculations of Diluted EPS

The Company excluded the following shares underlying stock-based awards from the calculations of diluted EPS because their inclusion would have been anti-dilutive for the three and six months ended June 29, 2013 and June 30, 2012:

	Three months ended		Six months ended
(In thousands)	June 29, 2013	June 30, 2012	June 29, 2013	June 30, 2012
Shares excluded from calculations of diluted EPS	1,580	2,422	1,580	2,074

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Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Net sales	$ 177,544	$ 188,233	$ 342,614	$ 363,636
Cost of sales	99,974	105,487	197,916	204,646
Gross profit	77,570	82,746	144,698	158,990
Selling, general and administrative expenses	35,397	35,989	67,818	71,037
Engineering, research and development expenses	13,427	12,726	25,600	24,715
Amortization of intangible assets	2,359	2,420	4,646	4,870
Operating income	26,387	31,611	46,634	58,368
Other income, net	(910)	(641)	(2,258)	(805)
Income before income taxes and equity in net income of affiliates	27,297	32,252	48,892	59,173
Income tax expense	7,516	10,579	12,714	19,644
Equity in net income of affiliates	0	0	0	(3)
Net income	$ 19,781	$ 21,673	$ 36,178	$ 39,532
Basic net income per common share	$ 0.14	$ 0.16	$ 0.26	$ 0.29
Diluted net income per common share	$ 0.14	$ 0.16	$ 0.26	$ 0.29
Weighted shares outstanding:
Basic	139,255	137,303	139,140	136,953
Diluted	139,751	138,196	139,791	138,121

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Inventories

6 Months Ended

Jun. 29, 2013

Inventories

INVENTORIES

Inventories consist of the following:

(In thousands)	June 29, 2013		December 31, 2012
Raw materials	$	27,040	$	27,720
Work-in process	14,443		10,242
Finished goods(a)	56,215		60,667
Supplies	442		515
Total inventories	$	98,140	$	99,144

(a) Includes consignment inventories held by customers for $6.2 million and $5.2 million at June 29, 2013 and December 31, 2012, respectively.

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Inventories (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Jun. 29, 2013	Dec. 31, 2012
Inventory Net [Abstract]
Consignment inventories held by customers	$ 6.2	$ 5.2

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Fair Value (Tables)

6 Months Ended

Jun. 29, 2013

Financial Assets Measured At Fair Value On Recurring Basis

The following table presents the Company’s financial assets that are measured at fair value on a recurring basis at June 29, 2013 and December 31, 2012. Level 1 inputs are based on quoted prices in active markets accessible at the reporting date for identical assets and liabilities. Level 2 inputs are based on quoted prices for similar instruments in active markets and quoted prices for identical or similar instruments in markets that are not active, or model-based valuation techniques for which all significant assumptions are observable in a market.

	June 29, 2013								December 31, 2012
(In thousands)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents
Commercial paper	$	—	$	79,991	$	—	$	79,991	$	—	$	59,980	$	—	$	59,980
Money market fund deposits	38,065		—		—		38,065		73,026		—		—		73,026
Short-term investments
Commercial paper	—		—		—		—		—		19,995		—		19,995
Total assets measured and recorded at fair value	$	38,065	$	79,991	$	—	$	118,056	$	73,026	$	79,975	$	—	$	153,001
Liabilities:
Foreign exchange forward contracts	$	—	$	1,074	$	—	$	1,074	$	—	$	4,603	$	—	$	4,603
Total liabilities measured and recorded at fair value	$	—	$	1,074	$	—	$	1,074	$	—	$	4,603	$	—	$	4,603

Information about Derivative Positions

The following table provides information about derivative positions held by the Company as of June 29, 2013 and December 31, 2012:

	June 29, 2013						December 31, 2012
(In thousands)	Gross amounts of recognized liabilities		Gross amounts offset in the condensed consolidated balance sheet		Net amount of liabilities in the condensed consolidated balance sheet		Gross amounts of recognized liabilities		Gross amounts offset in the condensed consolidated balance sheet		Net amount of liabilities in the condensed consolidated balance sheet
Derivatives	$	1,224	$	150	$	1,074	$	4,730	$	127	$	4,603

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]

Gains and losses associated with derivatives are recorded in "Other income, net" in the condensed consolidated statements of operations. (Losses) gains associated with derivative instruments not designated as hedging instruments were as follows:

	Three months ended					Six months ended
(In thousands)	June 29, 2013			June 30, 2012		June 29, 2013			June 30, 2012
(Losses) gains on forward currency contracts	$	(1,074	)	$	777	$	(4,428	)	$	(2,158	)

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Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	$ 118,056	$ 153,001
Total liabilities measured and recorded at fair value	1,074	4,603
Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign exchange forward contracts	1,074	4,603
Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	19,995
Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	79,991	59,980
Money Market Fund Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	38,065	73,026
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	38,065	73,026
Total liabilities measured and recorded at fair value	0	0
Fair Value, Inputs, Level 1 | Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign exchange forward contracts	0	0
Fair Value, Inputs, Level 1 | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	0
Fair Value, Inputs, Level 1 | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Fair Value, Inputs, Level 1 | Money Market Fund Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	38,065	73,026
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	79,991	79,975
Total liabilities measured and recorded at fair value	1,074	4,603
Fair Value, Inputs, Level 2 | Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign exchange forward contracts	1,074	4,603
Fair Value, Inputs, Level 2 | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	19,995
Fair Value, Inputs, Level 2 | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	79,991	59,980
Fair Value, Inputs, Level 2 | Money Market Fund Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	0	0
Total liabilities measured and recorded at fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign exchange forward contracts	0	0
Fair Value, Inputs, Level 3 [Member] | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	0
Fair Value, Inputs, Level 3 [Member] | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Fair Value, Inputs, Level 3 [Member] | Money Market Fund Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 0	$ 0

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Shares Excluded Underlying Stock Based Award from Calucations of Diluted EPS (Detail) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from calculations of diluted EPS	1,580	2,422	1,580	2,074

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Reconciliation of Share Amount Used in Computation of Basic and Diluted Earnings Per Share (EPS) (Detail) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Weighted shares outstanding:
Basic-weighted common shares outstanding	139,255	137,303	139,140	136,953
Weighted common shares assumed upon exercise of stock options and vesting of restricted common stock	496	893	651	1,168
Diluted-weighted common shares and common shares equivalent outstanding	139,751	138,196	139,791	138,121

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Condensed Consolidated Statements Of Equity (USD $) In Thousands	Total	Common stock	Additional paid-in capital	Retained deficit	Foreign currency translation adjustments	Defined benefit pension adjustments
Balance at Dec. 31, 2011	$ 608,238	$ 1,358	$ 788,673	$ (225,766)	$ 44,737	$ (764)
Balance (in shares) at Dec. 31, 2011		135,821
Shares issued under stock plans (in shares)		1,649
Shares issued under stock plans	4,194	17	4,177	0	0	0
Repurchase and retirement of common stock (shares)		(57)
Repurchase and retirement of common stock	(427)	(1)	(329)	(97)	0	0
Share-based compensation expense	3,934	0	3,934	0	0	0
Tax benefit associated with stock plans	827	0	827	0	0	0
Pension liability adjustments, net of tax	15	0	0	0	0	15
Reclassification of foreign currency translation associated with acquisition of business	(216)	0	0	0	(216)	0
Foreign currency translation	(4,141)	0	0	0	(4,141)	0
Net income	39,532	0	0	39,532	0	0
Balance at Jun. 30, 2012	651,956	1,374	797,282	(186,331)	40,380	(749)
Balance (in shares) at Jun. 30, 2012		137,413
Balance at Dec. 31, 2012	694,799	1,385	809,514	(157,038)	41,997	(1,059)
Balance (in shares) at Dec. 31, 2012		138,458
Shares issued under stock plans (in shares)		1,687
Shares issued under stock plans	6,322	17	6,305	0	0	0
Repurchase and retirement of common stock (shares)		(970)
Repurchase and retirement of common stock	(9,382)	(10)	(5,663)	(3,709)	0	0
Share-based compensation expense	3,769	0	3,769	0	0	0
Tax benefit associated with stock plans	940	0	940	0	0	0
Pension liability adjustments, net of tax	57	0	0	0	0	57
Foreign currency translation	(16,420)	0	0	0	(16,420)	0
Net income	36,178	0	0	36,178		0
Balance at Jun. 29, 2013	$ 716,263	$ 1,392	$ 814,865	$ (124,569)	$ 25,577	$ (1,002)
Balance (in shares) at Jun. 29, 2013		139,175

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Summary of Significant Accounting Policies

6 Months Ended

Jun. 29, 2013

Summary of Significant Accounting Policies

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations Entegris, Inc. (Entegris or the Company) is a leading provider of a wide range of products for purifying, protecting and transporting critical materials used in processing and manufacturing in the microelectronics and other high-technology industries.

Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its majority-owned subsidiaries. Intercompany profits, transactions and balances have been eliminated in consolidation.

Use of Estimates The preparation of condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, particularly receivables, inventories, property, plant and equipment, and intangibles, accrued expenses and income taxes and related accounts, and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Basis of Presentation In the opinion of the Company, the accompanying unaudited condensed consolidated financial statements contain all adjustments necessary to present fairly, in conformity with accounting principles generally accepted in the United States of America.

The condensed consolidated financial statements and notes are presented as permitted by Form 10-Q and do not contain certain information included in the Company’s annual consolidated financial statements and notes. The information included in this Form 10-Q should be read in conjunction with Management’s Discussion and Analysis and consolidated financial statements and notes thereto included in the Company’s Form 10-K for the year ended December 31, 2012. The results of operations for the six months ended June 29, 2013 are not necessarily indicative of the results to be expected for the full year.

Fair Value of Financial Instruments The carrying value of accounts receivable and accounts payable approximates fair value due to the short maturity of those instruments.

Recent Accounting Pronouncements

In December 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2011-11, Amendments to Disclosures about Offsetting Assets and Liabilities. The objective of ASU No. 2011-11 is to provide enhanced disclosures that will enable users of its financial statements to evaluate the effect or potential effect of netting arrangements on an entity’s financial position. In January 2013, the FASB issued ASU No. 2013-01, Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities, which clarifies what instruments and transactions are subject to the offsetting disclosure requirements established by ASU No. 2011-11. Derivative instruments accounted for in accordance with Accounting Standards Codification (ASC) 815, are subject to ASU No. 2011-11 disclosure requirements. These amendments are disclosure related and will not have an impact on the Company’s financial position, results of operations, comprehensive income or cash flows. ASU Nos. 2011-11 and 2013-01 are effective for reporting periods beginning after December 15, 2012. Accordingly, the Company adopted ASU Nos. 2011-11 and 2013-01 in the first quarter of fiscal 2013. The disclosures associated with ASU Nos. 2011-11 and 2013-01 are included in note 5 to the Company’s condensed consolidated financial statements.

In February 2013, the FASB issued ASU No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income that amended ASU No. 2011-12 and ASU No. 2011-05. ASU No. 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either in the consolidated statements of operations or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. These amendments are disclosure related and will not have an impact on the Company’s financial position, results of operations, comprehensive income or cash flows. ASU 2013-02 is effective for reporting periods beginning after December 15, 2012. Accordingly, the Company adopted ASU 2013-02 in the first quarter of fiscal 2013. The disclosures associated with ASU No. 2013-02 are included in the Company’s condensed consolidated statements of equity. Amounts reclassified out of accumulated other comprehensive income were not significant.

Other ASUs issued not effective for the Company until after June 29, 2013 are not expected to have a material effect on the Company’s condensed consolidated financial statements.

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Earnings Per Common Share

6 Months Ended

Jun. 29, 2013

Earnings Per Common Share

EARNINGS PER COMMON SHARE

The following table presents a reconciliation of the denominators used in the computation of basic and diluted earnings per common share (EPS):

	Three months ended		Six months ended
(In thousands)	June 29, 2013	June 30, 2012	June 29, 2013	June 30, 2012
Basic—weighted common shares outstanding	139,255	137,303	139,140	136,953
Weighted common shares assumed upon exercise of stock options and vesting of restricted common stock	496	893	651	1,168
Diluted—weighted common shares and common shares equivalent outstanding	139,751	138,196	139,791	138,121

The Company excluded the following shares underlying stock-based awards from the calculations of diluted EPS because their inclusion would have been anti-dilutive for the three and six months ended June 29, 2013 and June 30, 2012:

	Three months ended		Six months ended
(In thousands)	June 29, 2013	June 30, 2012	June 29, 2013	June 30, 2012
Shares excluded from calculations of diluted EPS	1,580	2,422	1,580	2,074

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Acquisitions Acquisitions (Notes)

6 Months Ended

Jun. 29, 2013

Business Combinations [Abstract]

Business Combinations Policy [Policy Text Block]

ACQUISITIONS

Jetalon

On April 1, 2013, the Company acquired substantially all the operating assets and liabilities of Jetalon Solutions, Inc. (Jetalon), a California-based supplier of fluid metrology products. The acquired net assets became part of the Company’s Contamination Control Solutions segment. The transaction was accounted for under the acquisition method of accounting and the results of operations of the entity are included in the Company's consolidated financial statements as of and since April 1, 2013. The acquisition of Jetalon’s assets and liabilities does not constitute a material business combination.

The purchase price for Jetalon includes cash consideration of $13.4 million, funded from our existing cash on hand, and earnout-based contingent consideration of up to a maximum of $14.5 million based on the operating performance of Jetalon in 2013, 2014 and 2015. Costs associated with the acquisition of Jetalon were not significant and were expensed as incurred.

Upon acquisition, the Company recorded a contingent consideration obligation of $3.1 million representing the fair value of the contingent consideration. This amount was estimated through a valuation model that incorporates industry-based probability adjusted assumptions relating to the achievement of operating results and the likelihood of the Company making payments. This fair value measurement is based upon significant inputs not observable in the market and therefore represents a Level 3 measurement. Subsequent changes in the fair value of this obligation will be recognized as adjustments to contingent consideration and reflected within our condensed consolidated statements of operations.

The purchase price of Jetalon consists of the following:

(In thousands):	Amount
Cash paid at closing	$	13,357
Estimated contingent consideration	3,095
Total purchase price	$	16,452

The purchase price of Jetalon, including the Company's preliminary valuation of contingent consideration, exceeds the net of the acquisition-date amounts of the identifiable assets acquired and the liabilities assumed by $10.1 million. Cash flows used to determine the purchase price included strategic and synergistic benefits (investment value) specific to the Company, which resulted in a purchase price in excess of the fair value of identifiable net assets. The purchase price also includes the fair values of other assets that were not identifiable, not separately recognizable under accounting rules (e.g., assembled workforce) or of immaterial value in addition to a going-concern element that represents the Company's ability to earn a higher rate of return on the group of assets than would be expected on the separate assets as determined during the valuation process. This additional investment value resulted in goodwill, which is expected to be deductible for income tax purposes.

The following table summarizes the allocation of the purchase price to the fair values assigned to the assets and liabilities assumed at the date of acquisition:

(In thousands):	Amount
Accounts receivable, inventory and other assets	$	944
Identifiable intangible assets	5,634
Current liabilities	(216		)
Net assets acquired	6,362
Goodwill	10,090
Total purchase price	$	16,452

As of June 29, 2013, the Company has completed its fair value determinations for all elements of the Jetalon acquisition with the exception of its valuation of purchased intangible assets and contingent consideration. Intangible assets, consisting mostly of technology-related intellectual property, generally will be amortized on a straight-line basis over an estimated useful life of approximately 10 years. The valuation of these items has been performed on a preliminary basis by the Company and is currently being reviewed, with the expectation of completion in the third quarter.

EPT

On April 2, 2012, the Company acquired the remaining 50% of its EPT joint venture in Taiwan, an equity method investee in which it had previously owned a 50% equity interest. The transaction was accounted for under the acquisition method of accounting and the results of operations of the entity are included in the Company's consolidated financial statements as of and since April 2, 2012. The investee's sales and operating results are not material to the Company's consolidated financial statements. The Company paid $3.4 million in cash for the additional 50% equity interest in the entity.

The Company remeasured its previously held equity interest in the entity at its April 2, 2012 fair value of $2.9 million. Based on the carrying value of the Company's equity interest in EPT before the business combination, the Company recognized a gain of $1.3 million. In addition, in prior reporting periods the Company recognized changes in the value of its equity interest in EPT related to translation adjustments in other comprehensive income. As required under the acquisition method of accounting, the $0.2 million recognized previously in other comprehensive income was reclassified and included in the calculation of the gain.

The purchase price has been allocated based on the fair values of all of the assets acquired and liabilities assumed. The sum of the purchase price of the additional 50% equity interest and the fair value of the equity interest in the investee held by the Company at the acquisition date exceeded the net of the acquisition-date amounts of the identifiable assets acquired and the liabilities assumed by $1.9 million. EPT is part of the Company’s Contamination Control Solutions segment.

As described above, the Company acquired businesses in 2013 and 2012. As part of the accounting for these transactions, the Company allocated the purchase price of the acquired entities based on the fair value of all the assets acquired and liabilities assumed. The valuation of the assets acquired and liabilities assumed, as well as the Company's previously held equity interest in the case of EPT, was based on the information that was available as of the acquisition date and the expectations and assumptions that have been deemed reasonable by the Company's management.

In performing these valuations, the Company used independent appraisals and discounted cash flows and other factors as the best evidence of fair value. The key underlying assumptions of the discounted cash flows were projected revenues, gross margin expectations and operating cost estimates. There are inherent uncertainties and management judgment required in these determinations. No assurance can be given that the underlying assumptions will occur as projected. The fair value measurements of the assets acquired and liabilities assumed were based on valuations involving significant unobservable inputs, or Level 3 in the fair value hierarchy.

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Information about Derivative Positions (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012	Dec. 31, 2012
Derivative [Line Items]
(Losses) gains on forward currency contracts	$ (1,074)	$ 777	$ (4,428)	$ (2,158)
Gross amounts of recognized liabilities	1,224		1,224		4,730
Gross amounts offset in the condensed consolidated balance sheet	150		150		127
Net amount of liabilities in the condensed consolidated balance sheet	$ 1,074		$ 1,074		$ 4,603

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Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 29, 2013	Dec. 31, 2012
Trade accounts and notes receivable, allowance for doubtful accounts	$ 1,732	$ 2,314
Property, plant and equipment, accumulated depreciation	276,232	263,302
Intangible assets, Accumulated amortization	$ 122,506	$ 119,198
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	139,174,789	138,457,769
Common stock, shares outstanding	139,174,789	138,457,769

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Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 29, 2013

Nature of Operations

Nature of Operations Entegris, Inc. (Entegris or the Company) is a leading provider of a wide range of products for purifying, protecting and transporting critical materials used in processing and manufacturing in the microelectronics and other high-technology industries.

Principles of Consolidation

Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its majority-owned subsidiaries. Intercompany profits, transactions and balances have been eliminated in consolidation.

Use of Estimates

Use of Estimates The preparation of condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, particularly receivables, inventories, property, plant and equipment, and intangibles, accrued expenses and income taxes and related accounts, and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Basis of Presentation

Basis of Presentation In the opinion of the Company, the accompanying unaudited condensed consolidated financial statements contain all adjustments necessary to present fairly, in conformity with accounting principles generally accepted in the United States of America.

The condensed consolidated financial statements and notes are presented as permitted by Form 10-Q and do not contain certain information included in the Company’s annual consolidated financial statements and notes. The information included in this Form 10-Q should be read in conjunction with Management’s Discussion and Analysis and consolidated financial statements and notes thereto included in the Company’s Form 10-K for the year ended December 31, 2012. The results of operations for the six months ended June 29, 2013 are not necessarily indicative of the results to be expected for the full year.

Fair Value of Financial Instruments

Fair Value of Financial Instruments The carrying value of accounts receivable and accounts payable approximates fair value due to the short maturity of those instruments.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In December 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2011-11, Amendments to Disclosures about Offsetting Assets and Liabilities. The objective of ASU No. 2011-11 is to provide enhanced disclosures that will enable users of its financial statements to evaluate the effect or potential effect of netting arrangements on an entity’s financial position. In January 2013, the FASB issued ASU No. 2013-01, Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities, which clarifies what instruments and transactions are subject to the offsetting disclosure requirements established by ASU No. 2011-11. Derivative instruments accounted for in accordance with Accounting Standards Codification (ASC) 815, are subject to ASU No. 2011-11 disclosure requirements. These amendments are disclosure related and will not have an impact on the Company’s financial position, results of operations, comprehensive income or cash flows. ASU Nos. 2011-11 and 2013-01 are effective for reporting periods beginning after December 15, 2012. Accordingly, the Company adopted ASU Nos. 2011-11 and 2013-01 in the first quarter of fiscal 2013. The disclosures associated with ASU Nos. 2011-11 and 2013-01 are included in note 5 to the Company’s condensed consolidated financial statements.

In February 2013, the FASB issued ASU No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income that amended ASU No. 2011-12 and ASU No. 2011-05. ASU No. 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either in the consolidated statements of operations or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. These amendments are disclosure related and will not have an impact on the Company’s financial position, results of operations, comprehensive income or cash flows. ASU 2013-02 is effective for reporting periods beginning after December 15, 2012. Accordingly, the Company adopted ASU 2013-02 in the first quarter of fiscal 2013. The disclosures associated with ASU No. 2013-02 are included in the Company’s condensed consolidated statements of equity. Amounts reclassified out of accumulated other comprehensive income were not significant.

Other ASUs issued not effective for the Company until after June 29, 2013 are not expected to have a material effect on the Company’s condensed consolidated financial statements.

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Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Net income	$ 19,781	$ 21,673	$ 36,178	$ 39,532
Other comprehensive income, net of tax
Foreign currency translation adjustments	(4,823)	(1,160)	(16,420)	(4,141)
Reclassification of cumulative translation adjustment associated with acquisition of business	0	(216)	0	(216)
Pension liability adjustments, net of tax	14	22	57	15
Other comprehensive loss	(4,809)	(1,354)	(16,363)	(4,342)
Comprehensive income	$ 14,972	$ 20,319	$ 19,815	$ 35,190

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Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 343,411	$ 330,419
Short-term investments	0	19,995
Trade accounts and notes receivable, net of allowance for doubtful accounts of $1,732 and $2,314	108,168	94,016
Inventories	98,140	99,144
Deferred tax assets, deferred tax charges and refundable income taxes	13,585	20,201
Assets held for sale	0	5,998
Other current assets	7,124	9,551
Total current assets	570,428	579,324
Property, plant and equipment, net of accumulated depreciation of $276,232 and $263,302	173,786	157,021
Other assets:
Intangible assets, net of accumulated amortization of $122,506 and $119,198	47,990	47,207
Deferred tax assets and other noncurrent tax assets	16,378	17,167
Other	23,356	10,825
Total assets	831,938	811,544
Current liabilities:
Accounts payable	37,627	36,341
Accrued payroll and related benefits	23,299	29,376
Other accrued liabilities	23,496	21,887
Deferred tax liabilities and income taxes payable	9,101	5,659
Total current liabilities	93,523	93,263
Pension benefit obligations and other liabilities	17,093	17,066
Deferred tax liabilities and other noncurrent tax liabilities	5,059	6,416
Commitments and contingent liabilities	0	0
Equity:
Preferred stock, par value $.01; 5,000,000 shares authorized; none issued and outstanding as of June 29, 2013 and December 31, 2012	0	0
Common stock, par value $.01; 400,000,000 shares authorized; issued and outstanding shares as of June 29, 2013 and December 31, 2012: 139,174,789 and 138,457,769	1,392	1,385
Additional paid-in capital	814,865	809,514
Retained deficit	(124,569)	(157,038)
Accumulated other comprehensive income	24,575	40,938
Total equity	716,263	694,799
Total liabilities and equity	$ 831,938	$ 811,544

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Summary of Financial Information for Reportable Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Total net sales	$ 177,544	$ 188,233	$ 342,614	$ 363,636
Total Segment Profit	39,845	47,610	73,464	89,875
CCS
Segment Reporting Information [Line Items]
Total net sales	114,634	123,144	218,595	238,696
Total Segment Profit	28,581	34,683	50,659	66,752
ME
Segment Reporting Information [Line Items]
Total net sales	45,869	44,565	90,001	85,270
Total Segment Profit	9,364	8,523	18,689	14,051
SMD
Segment Reporting Information [Line Items]
Total net sales	17,041	20,524	34,018	39,670
Total Segment Profit	$ 1,900	$ 4,404	$ 4,116	$ 9,072

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Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Dec. 31, 2012
Inventory Net
Raw materials	$ 27,040	$ 27,720
Work-in process	14,443	10,242
Finished goods	56,215	60,667
Supplies	442	515
Total inventories	$ 98,140	$ 99,144

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Segment Reporting

6 Months Ended

Jun. 29, 2013

Segment Reporting

SEGMENT REPORTING

The Company’s financial reporting segments are Contamination Control Solutions (CCS), Microenvironments (ME) and Specialty Materials (SMD), each of which provide unique products and services, are separately managed and have separate financial information evaluated regularly by the Company’s chief operating decision maker in determining resource allocation and assessing performance.

• CCS: provides a wide range of products and subsystems that purify, monitor and deliver critical liquids and gases used in the semiconductor manufacturing process.

• ME: provides products that protect wafers, reticles and electronic components at various stages of transport, processing and storage related to semiconductor manufacturing.

• SMD: provides specialized graphite components used in semiconductor equipment and offers low-temperature, plasma-enhanced chemical vapor deposition coatings of critical components of semiconductor manufacturing equipment used in various stages of the manufacturing process as well as graphite and silicon carbide for certain critical industrial markets.

Inter-segment sales are not significant. Segment profit is defined as net sales less direct segment operating expenses, excluding certain unallocated expenses, consisting mainly of general and administrative costs for the Company’s human resources, finance and information technology functions as well as interest expense, and amortization of intangible assets.

Summarized financial information for the Company’s reportable segments is shown in the following table:

	Three months ended				Six months ended
(In thousands)	June 29, 2013		June 30, 2012		June 29, 2013		June 30, 2012
Net sales
CCS	$	114,634	$	123,144	$	218,595	$	238,696
ME	45,869		44,565		90,001		85,270
SMD	17,041		20,524		34,018		39,670
Total net sales	$	177,544	$	188,233	$	342,614	$	363,636

	Three months ended				Six months ended
(In thousands)	June 29, 2013		June 30, 2012		June 29, 2013		June 30, 2012
Segment profit
CCS	$	28,581	$	34,683	$	50,659	$	66,752
ME	9,364		8,523		18,689		14,051
SMD	1,900		4,404		4,116		9,072
Total segment profit	$	39,845	$	47,610	$	73,464	$	89,875

The following table reconciles total segment profit to operating income:

	Three months ended						Six months ended
(In thousands)	June 29, 2013			June 30, 2012			June 29, 2013			June 30, 2012
Total segment profit	$	39,845		$	47,610		$	73,464		$	89,875
Amortization of intangible assets	(2,359		)	(2,420		)	(4,646		)	(4,870		)
Unallocated general and administrative expenses	(11,099		)	(13,579		)	(22,184		)	(26,637		)
Operating income	26,387			31,611			46,634			58,368
Other income, net	(910		)	(641		)	(2,258		)	(805		)
Income before income taxes and equity in net income of affiliates	$	27,297		$	32,252		$	48,892		$	59,173

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Reconciliation of Total Segment Profit to Operating Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Segment Profit	$ 39,845	$ 47,610	$ 73,464	$ 89,875
Unallocated General And Administrative Expenses	(11,099)	(13,579)	(22,184)	(26,637)
Amortization of intangible assets	(2,359)	(2,420)	(4,646)	(4,870)
Operating income	26,387	31,611	46,634	58,368
Other income, net	(910)	(641)	(2,258)	(805)
Income before income taxes and equity in net income of affiliates	$ 27,297	$ 32,252	$ 48,892	$ 59,173

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Inventories (Tables)

6 Months Ended

Jun. 29, 2013

Inventories

Inventories consist of the following:

(In thousands)	June 29, 2013		December 31, 2012
Raw materials	$	27,040	$	27,720
Work-in process	14,443		10,242
Finished goods(a)	56,215		60,667
Supplies	442		515
Total inventories	$	98,140	$	99,144

(a) Includes consignment inventories held by customers for $6.2 million and $5.2 million at June 29, 2013 and December 31, 2012, respectively.

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Fair Value

6 Months Ended

Jun. 29, 2013

Fair Value

FAIR VALUE

Financial Assets Measured at Fair Value on a Recurring Basis

The following table presents the Company’s financial assets that are measured at fair value on a recurring basis at June 29, 2013 and December 31, 2012. Level 1 inputs are based on quoted prices in active markets accessible at the reporting date for identical assets and liabilities. Level 2 inputs are based on quoted prices for similar instruments in active markets and quoted prices for identical or similar instruments in markets that are not active, or model-based valuation techniques for which all significant assumptions are observable in a market.

	June 29, 2013								December 31, 2012
(In thousands)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents
Commercial paper	$	—	$	79,991	$	—	$	79,991	$	—	$	59,980	$	—	$	59,980
Money market fund deposits	38,065		—		—		38,065		73,026		—		—		73,026
Short-term investments
Commercial paper	—		—		—		—		—		19,995		—		19,995
Total assets measured and recorded at fair value	$	38,065	$	79,991	$	—	$	118,056	$	73,026	$	79,975	$	—	$	153,001
Liabilities:
Foreign exchange forward contracts	$	—	$	1,074	$	—	$	1,074	$	—	$	4,603	$	—	$	4,603
Total liabilities measured and recorded at fair value	$	—	$	1,074	$	—	$	1,074	$	—	$	4,603	$	—	$	4,603

The following table provides information about derivative positions held by the Company as of June 29, 2013 and December 31, 2012:

	June 29, 2013						December 31, 2012
(In thousands)	Gross amounts of recognized liabilities		Gross amounts offset in the condensed consolidated balance sheet		Net amount of liabilities in the condensed consolidated balance sheet		Gross amounts of recognized liabilities		Gross amounts offset in the condensed consolidated balance sheet		Net amount of liabilities in the condensed consolidated balance sheet
Derivatives	$	1,224	$	150	$	1,074	$	4,730	$	127	$	4,603

Gains and losses associated with derivatives are recorded in "Other income, net" in the condensed consolidated statements of operations. (Losses) gains associated with derivative instruments not designated as hedging instruments were as follows:

	Three months ended					Six months ended
(In thousands)	June 29, 2013			June 30, 2012		June 29, 2013			June 30, 2012
(Losses) gains on forward currency contracts	$	(1,074	)	$	777	$	(4,428	)	$	(2,158	)

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Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012
Operating activities:
Net income	$ 36,178	$ 39,532
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	14,607	13,513
Amortization	4,646	4,870
Share-based compensation expense	3,769	3,934
Other	2,760	1,376
Changes in operating assets and liabilities:
Trade accounts receivable and notes receivable	(19,485)	(10,335)
Inventories	(3,135)	(10,997)
Accounts payable and accrued liabilities	(5,359)	744
Other current assets	2,353	(797)
Income taxes payable and refundable income taxes	7,524	2,679
Other	(1,603)	(1,013)
Net cash provided by operating activities	42,255	43,506
Investing activities:
Acquisition of property, plant and equipment	(34,131)	(30,117)
Acquisition of business, net of cash acquired	(13,358)	(2,961)
Proceeds from maturities of short-term investments	20,000	0
Proceeds from sale of assets held for sale	6,500	0
Other	47	183
Net cash used in investing activities	(20,942)	(32,895)
Financing activities:
Issuance of common stock	6,322	4,194
Repurchase and retirement of common stock	(9,382)	(427)
Other	941	827
Net cash (used in) provided by financing activities	(2,119)	4,594
Effect of exchange rate changes on cash and cash equivalents	(6,202)	(1,933)
Increase in cash and cash equivalents	12,992	13,272
Cash and cash equivalents at beginning of period	330,419	273,593
Cash and cash equivalents at end of period	343,411	286,865
Supplemental Cash Flow Information
Equipment purchases in accounts payable	$ 4,129	$ 0

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Segment Reporting (Tables)

6 Months Ended

Jun. 29, 2013

Summary of Financial Information for Reportable Segments

Summarized financial information for the Company’s reportable segments is shown in the following table:

	Three months ended				Six months ended
(In thousands)	June 29, 2013		June 30, 2012		June 29, 2013		June 30, 2012
Net sales
CCS	$	114,634	$	123,144	$	218,595	$	238,696
ME	45,869		44,565		90,001		85,270
SMD	17,041		20,524		34,018		39,670
Total net sales	$	177,544	$	188,233	$	342,614	$	363,636

	Three months ended				Six months ended
(In thousands)	June 29, 2013		June 30, 2012		June 29, 2013		June 30, 2012
Segment profit
CCS	$	28,581	$	34,683	$	50,659	$	66,752
ME	9,364		8,523		18,689		14,051
SMD	1,900		4,404		4,116		9,072
Total segment profit	$	39,845	$	47,610	$	73,464	$	89,875

Reconciliation of Total Segment Profit to Operating Income

The following table reconciles total segment profit to operating income:

	Three months ended						Six months ended
(In thousands)	June 29, 2013			June 30, 2012			June 29, 2013			June 30, 2012
Total segment profit	$	39,845		$	47,610		$	73,464		$	89,875
Amortization of intangible assets	(2,359		)	(2,420		)	(4,646		)	(4,870		)
Unallocated general and administrative expenses	(11,099		)	(13,579		)	(22,184		)	(26,637		)
Operating income	26,387			31,611			46,634			58,368
Other income, net	(910		)	(641		)	(2,258		)	(805		)
Income before income taxes and equity in net income of affiliates	$	27,297		$	32,252		$	48,892		$	59,173

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Acquisitions Acquisitions (Tables)

6 Months Ended

Jun. 29, 2013

Business Combinations [Abstract]

Schedule Of Acquisition Purchase Price [Table Text Block]

The purchase price of Jetalon consists of the following:

(In thousands):	Amount
Cash paid at closing	$	13,357
Estimated contingent consideration	3,095
Total purchase price	$	16,452

Schedule of Purchase Price Allocation [Table Text Block]

The following table summarizes the allocation of the purchase price to the fair values assigned to the assets and liabilities assumed at the date of acquisition:

(In thousands):	Amount
Accounts receivable, inventory and other assets	$	944
Identifiable intangible assets	5,634
Current liabilities	(216		)
Net assets acquired	6,362
Goodwill	10,090
Total purchase price	$	16,452

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Acquisitions Additional information (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Apr. 01, 2013	Apr. 02, 2012	Dec. 31, 2011
Acquisitions [Abstract]
Acquired Intangible assets, Weighted Average Useful Life		10 years
Cash paid at closing			$ 13,357,000
Equity Method Investment, Ownership Percentage					50.00%
Business Acquisition, Percentage of Voting Interests Acquired				50.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value				2,900,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	1,300,000
Goodwill			10,090,000	1,900,000
Foreign currency transaction gain realized upon acquisition	200,000
Business Acquisition, Contingent Consideration, Potential Cash Payment			14,500,000
Estimated contingent consideration			3,095,000
Total purchase price			$ 16,452,000	$ 3,400,000

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Acquisitions Purchase Price (Details) (USD $) In Thousands, unless otherwise specified	Apr. 01, 2013	Apr. 02, 2012
Purchase Price [Abstract]
Cash paid at closing	$ 13,357
Estimated contingent consideration	(3,095)
Total purchase price	$ 16,452	$ 3,400

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Document and Entity Information	6 Months Ended
	Jun. 29, 2013	Jul. 22, 2013
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 29, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Trading Symbol	ENTG
Entity Registrant Name	ENTEGRIS INC
Entity Central Index Key	0001101302
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		139,064,121

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Acquisitions Purchase Price Allocation (Details) (USD $) In Thousands, unless otherwise specified	Apr. 01, 2013	Apr. 02, 2012
Purchase Price Allocation [Abstract]
Accounts receivable, inventory and other assets	$ 944
Identifiable intangible assets	5,634
Current liabilities	(216)
Net assets acquired	6,362
Goodwill	10,090	1,900
Total purchase price	$ 16,452	$ 3,400