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 ☒ 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 ☒ 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, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting ~~company”~~company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. ~~(Check one)~~:

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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

Number of shares outstanding of the issuer’s common stock as of ~~October 27, 2017: 33,627,343~~July 23, 2021: 44.7 million

	June 25,			December 25,
(In millions, except par value)	2021			2020
ASSETS
Current assets:
Cash and cash equivalents	$	451.4		$	200.3
Accounts receivable, net of allowance for doubtful accounts of $0.5 and $0.3 at June 25, 2021 and December 25, 2020, respectively		210.4			145.5
Inventories		302.0			180.4
Prepaid expenses and other current assets		35.5			18.9
Total current assets		999.3			545.1
Property, plant and equipment, net		218.3			159.2
Goodwill		257.2			171.1
Intangibles assets, net		270.5			160.5
Deferred tax assets, net		23.3			23.5
Operating lease right-of-use assets		69.8			37.8
Other non-current assets		8.3			5.3
Total assets	$	1,846.7		$	1,102.5
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Bank borrowings	$	21.6		$	7.4
Accounts payable		231.0			121.3
Accrued compensation and related benefits		43.9			34.5
Operating lease liabilities		16.0			11.7
Other current liabilities		42.5			26.3
Total current liabilities		355.0			201.2
Bank borrowings, net of current portion		573.1			261.6
Deferred tax liabilities		45.5			33.6
Operating lease liabilities		54.3			31.1
Other liabilities		30.1			23.8
Total liabilities		1,058.0			551.3
Commitments and contingencies (See Note 10)
Equity:
UCT stockholders’ equity:
Preferred stock — $0.001 par value, 10.0 shares authorized; NaN outstanding	—			—
Common stock — $0.001 par value, 90.0 shares authorized; 44.7 shares and 40.6 shares issued and outstanding at June 25, 2021 and December 25, 2020, respectively		0.1			0.1
Additional paid-in capital		506.1			312.8
Common shares held in treasury, at cost, 0.6 shares at June 25, 2021 and December 25, 2020		(3.3	)		(3.3	)
Retained earnings		260.0			217.9
Accumulated other comprehensive gain		4.6			5.1
Total UCT stockholders' equity		767.5			532.6
Noncontrolling interests		21.2			18.6
Total equity		788.7			551.2
Total liabilities and stockholders' equity	$	1,846.7		$	1,102.5

(~~Unaudited; in thousands, except share and per share amounts)~~See accompanying Notes to Condensed Consolidated Financial Statements)

September 29,

December 30,

2017

2016

ASSETS

Current assets:

Cash and cash equivalents

$
65,939

$
52,465

Accounts receivable, net of allowance of $44 and $65, respectively

107,662

74,663

Inventories

165,303

103,861

Prepaid expenses and other

11,460

6,461

Total current assets

350,364

237,450

Equipment and leasehold improvements, net

28,943

18,858

Goodwill

85,248

85,248

Purchased intangibles, net

33,331

37,024

Deferred tax assets, net

1,098

1,355

Other non-current assets

1,769

762

Total assets

$
500,753

$
380,697

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:

Bank borrowings

$
15,518

$
16,819

Accounts payable

130,539

71,189

Accrued compensation and related benefits

12,510

7,904

Deferred rent, current portion

661

634

Other current liabilities

11,020

4,515

Total current liabilities

170,248

101,061

Bank borrowings, net of current portion

41,810

50,931

Deferred tax liability

9,607

9,917

Deferred rent and other liabilities

2,408

2,657

Total liabilities

224,073

164,566

Commitments and contingencies (See Note 9)

Stockholders’ equity:

Preferred stock — $0.001 par value, 10,000,000 authorized; none
   outstanding

—

—

Common stock — $0.001 par value, 90,000,000 authorized;
   33,627,343 and  32,956,285 shares issued and outstanding,
   in 2017 and 2016, respectively

34

33

Additional paid-in capital

186,159

181,781

Common shares held in treasury, at cost, 601,944 shares in 2017 and
   2016, respectively

(3,337
)

(3,337
)
Retained earnings

92,273

38,037

Accumulated other comprehensive gain (loss)

1,551

(383
)
Total stockholders’ equity

276,680

216,131

Total liabilities and stockholders’ equity

$
500,753

$
380,697

	Three Months Ended						Six Months Ended
	June 25,			June 26,			June 25,			June 26,
(In millions, except per share amounts)	2021			2020			2021			2020
Revenues:
Products	$	442.5		$	277.9		$	788.1		$	537.3
Services		72.7			66.9			144.7			128.4
Total revenues		515.2			344.8			932.8			665.7
Cost of revenues:
Products		367.9			229.3			651.5		444
Services		47.4			41.6			94.5		82.1
Total cost of revenues	415.3				270.9			746.0		526.1
Gross profit		99.9			73.9			186.8			139.6
Operating expenses:
Research and development	6.1			3.8			10.3			7.2
Sales and marketing		12.7		5.9				20.3		11.7
General and administrative		49.2		33.4				83.9		67.3
Total operating expenses		68.0		43.1				114.5			86.2
Income from operations		31.9			30.8			72.3		53.4
Interest income		0.1			0.2			0.2			0.5
Interest expense		(7.1	)		(3.8	)		(10.7	)		(9.0	)
Other income (expense), net		(0.7	)		0.6			(5.0	)		(2.1	)
Income before provision for income taxes		24.2			27.8			56.8			42.8
Provision for income taxes		6.2		5.7				13.2		10.2
Net income		18.0			22.1			43.6			32.6
Less: Net income attributable to noncontrolling interests		0.9			0.8			1.5			1.9
Net income attributable to UCT	$	17.1		$	21.3		$	42.1		$	30.7

Net income per share attributable to UCT common stockholders:
Basic	$	0.39		$	0.53		$	1.00		$	0.77
Diluted	$	0.39		$	0.52		$	0.98		$	0.75
Shares used in computing net income per share:
Basic		43.3			40.1			41.9			39.9
Diluted		44.3			40.8			42.9			40.8

Three Months Ended

Nine Months Ended

September 29,

September 23,

September 29,

September 23,

2017

2016

2017

2016

Sales

$
242,610

$
146,154

$
675,465

$
388,214

Cost of goods sold

199,914

122,663

551,903

331,132

Gross profit

42,696

23,491

123,562

57,082

Operating expenses:

Research and development

2,722

2,447

8,402

7,082

Sales and marketing

3,662

2,819

10,064

8,537

General and administrative

13,050

11,525

37,656

31,742

Total operating expenses

19,434

16,791

56,122

47,361

Income from operations

23,262

6,700

67,440

9,721

Interest and other income (expense), net

(19
)

(1,336
)

(2,077
)

(3,263
)

Income before provision for income taxes

23,243

5,364

65,363

6,458

Income tax provision

3,527

2,750

11,127

6,360

Net income

$
19,716

$
2,614

$
54,236

$
98

Net income per share:

Basic

$
0.59

$
0.08

$
1.63

$
0.00

Diluted

$
0.57

$
0.08

$
1.59

$
0.00

Shares used in computing net income per share:

Basic

33,540

32,759

33,342

32,544

Diluted

34,360

33,100

34,216

32,887

	Six Months Ended
	June 25,			June 26,
(In millions)	2021			2020
Cash flows from operating activities:
Net income	$	43.6		$	32.6
Adjustments to reconcile net income to net cash provided by operating activities (excluding assets acquired and liabilities assumed):
Depreciation and amortization		15.1			12.6
Amortization of intangible assets		14.4			9.9
Stock-based compensation		7.2			6.2
Amortization of debt issuance costs		1.4			0.9
Gain from insurance proceeds		(7.3	)		(0.6	)
Deferred income taxes		0.9			—
Change in the fair value of financial instruments and earn-out liability		13.0			4.2
Others		0.2			0.3
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable		(13.3	)		(26.0	)
Inventories		(41.3	)		(21.5	)
Prepaid expenses and other current assets		(0.3	)		(1.6	)
Other non-current assets		(0.7	)		0.3
Accounts payable		80.8			6.5
Accrued compensation and related benefits		(1.1	)		2.8
Income taxes payable		0.9			4.9
Operating lease assets and liabilities		(0.6	)		(0.5	)
Other liabilities		3.8			2.2
Net cash provided by operating activities		116.7			33.2
Cash flows from investing activities:
Purchases of property, plant and equipment		(22.7	)		(17.0	)
Proceeds from sale of equipment, including insurance proceeds		7.4			2.9
Settlement of forward contracts in conjunction with the acquisition of Ham-Let		(10.4	)		—
Acquisition of business, net of cash acquired		(344.8	)		—
Net cash used in investing activities		(370.5	)		(14.1	)
Cash flows from financing activities:
Proceeds from bank borrowings		371.5			60.5
Proceeds from issuance of common stock		193.1			0.3
Principal payments on bank borrowings and finance leases		(43.4	)		(26.3	)
Payments of debt issuance costs		(8.9	)		—
Payments of dividends to a joint venture shareholder		(0.1	)		—
Employees’ taxes paid upon vesting of restricted stock units		(7.0	)		(1.4	)
Net cash provided by financing activities		505.2			33.1
Effect of exchange rate changes on cash and cash equivalents		(0.3	)		(0.3	)
Net increase in cash and cash equivalents		251.1			51.9
Cash and cash equivalents at beginning of period		200.3			162.5
Cash and cash equivalents at end of period		451.4		$	214.4
Supplemental cash flow information:
Income taxes paid, net of income tax refunds	$	10.8		$	4.6
Interest paid	$	8.1		$	9.2
Non-cash investing and financing activities:
Property, plant and equipment purchased included in accounts payable and other liabilities	$	4.7		$	2.5

Nine Months Ended

September 29,

September 23,

2017

2016

Cash flows from operating activities:

Net income

$
54,236

$
98

Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization

3,895

4,242

Amortization of finite-lived intangibles

3,693

4,318

Amortization of debt issuance costs

115

114

Stock-based compensation

5,059

4,040

Change in the fair value of the contingent earn out

(278
)

1,405

Excess tax benefit from stock-based compensation

—

771

Loss in the disposal of fixed assets

72

—

Changes in assets and liabilities

Accounts receivable

(32,387
)

(6,567
)
Inventories

(60,484
)

(16,185
)
Prepaid expenses and other

(4,386
)

1,249

Deferred income taxes

(224
)

1,276

Other non-current assets

(486
)

(26
)
Accounts payable

57,695

12,342

Accrued compensation and related benefits

4,514

443

Income taxes payable

4,614

450

Other liabilities

1,978

1,412

Net cash provided by operating activities

37,626

9,382

Cash flows from investing activities:

Purchases of equipment and leasehold improvements

(12,534
)

(5,460
)
Disposal of equipment and leasehold improvements

—

34

Net cash used for investing activities

(12,534
)

(5,426
)
Cash flows from financing activities:

Proceeds from bank borrowings

8,172

4,523

Proceeds from issuance of common stock

1,689

500

Principal payments on bank borrowings

(19,228
)

(11,016
)
Excess tax benefit from stock-based compensation

—

(771
)
Employees’ taxes paid upon vesting of restricted stock units

(2,369
)

—

Net cash used for financing activities

(11,736
)

(6,764
)
Effect of exchange rate changes on cash and cash equivalents

118

(25
)
Net increase (decrease) in cash and cash equivalents

$
13,474

$
(2,833
)
Cash and cash equivalents at beginning of period

52,465

50,103

Cash and cash equivalents at end of period

$
65,939

$
47,270

Supplemental cash flow information:

Income taxes paid

$
6,860

$
2,988

Income tax refunds

$
25

$
591

Interest paid

$
3,409

$
1,920

Non-cash investing activities:

Restricted stock issued

$
11,778

$
3,690

Equipment and leasehold improvements purchased included in accounts payable

$
1,514

$
483

	Three Months Ended
	June 25, 2021
	Common Stock					Additional Paid-in			Treasury shares					Retained		Accumulated Other Comprehensive			Total Stockholders’			Noncontrolling			Total
(In millions)	Shares			Amount		Capital			Shares		Amount			Earnings		Income (Loss)			Equity of UCT			Interests			Equity
Balance March 26, 2021		40.6		$	0.1	$	316.3			0.6	$	(3.3	)	$	242.9	$	1.6		$	557.6		$	19.0		$	576.6
Issuance of common stock in public offering		3.7			—		192.8			—		—			—		—			192.8			—			192.8
Issuance under employee stock plans		0.6			—		0.3			—		—			—		—			0.3			—			0.3
Employees’ taxes paid upon vesting of restricted stock units		(0.1	)		—		(7.0	)		—		—			—		—			(7.0	)		—			(7.0	)
Stock-based compensation expense		—			—		3.7			—		—			—		—			3.7			—			3.7
Noncontrolling interests from acquisition of Ham-Let		—			—		—			—		—			—		—			—			1.2			1.2
Net income		—			—	—				—		—			17.1		—			17.1			0.9			18.0
Dividend payments to a joint venture shareholder		—			—		—			—		—			—		—			—			0.1			0.1
Other comprehensive loss		—			—	—				—		—			—		3.0			3.0			—			3.0
Balance June 25, 2021		44.8		$	0.1	$	506.1			0.6	$	(3.3	)	$	260.0	$	4.6		$	767.5		$	21.2		$	788.7

	Six Months Ended
	June 25, 2021
	Common Stock					Additional Paid-in			Treasury shares					Retained		Accumulated Other Comprehensive			Total Stockholders’			Noncontrolling			Total
(In millions)	Shares			Amount		Capital			Shares		Amount			Earnings		Income (Loss)			Equity of UCT			Interests			Equity
Balance December 25, 2020		40.6		$	0.1	$	312.8			0.6	$	(3.3	)	$	217.9	$	5.1		$	532.6		$	18.6		$	551.2
Issuance of common stock in public offering		3.7			—		192.8			—		—			—		—			192.8			—			192.8
Issuance under employee stock plans		0.6			—		0.3			—		—			—		—			0.3			—			0.3
Employees’ taxes paid upon vesting of restricted stock units		(0.1	)		—		(7.0	)		—		—			—		—			(7.0	)		—			(7.0	)
Stock-based compensation expense		—			—		7.2			—		—			—		—			7.2			—			7.2
Noncontrolling interests from acquisition of Ham-Let		—			—		—			—		—			—		—			—			1.2			1.2
Net income		—			—		—			—		—			42.1		—			42.1			1.5			43.6
Dividend payments to a joint venture shareholder		—			—		—			—		—			—		—			—			(0.1	)		(0.1	)
Other comprehensive loss		—			—		—			—		—			—		(0.5	)		(0.5	)		—			(0.5	)
Balance June 25, 2021		44.8		$	0.1	$	506.1			0.6	$	(3.3	)	$	260.0	$	4.6		$	767.5		$	21.2		$	788.7

	Three Months Ended
	June 26, 2020
	Common Stock								Treasury shares
(In millions)	Shares			Amount		Additional Paid-in Capital			Shares		Amount			Retained Earnings		Accumulated Other Comprehensive Income (Loss)			Total Stockholders’ Equity of UCT			Noncontrolling Interests		Total Equity
Balance March 27, 2020		39.9		$	0.1	$	304.0			0.6	$	(3.3	)	$	149.7	$	(4.6	)	$	445.9		$	16.9	$	462.8
Issuance under employee stock plans		0.5		—			0.3		—		—			—		—				0.3		—			0.3
Stock-based compensation expense	—			—			3.1		—		—			—		—				3.1		—			3.1
Taxes paid related to net share settlement of equity awards		(0.1	)	—			(1.4	)	—		—			—		—				(1.4	)	—			(1.4	)
Net income	—			—		—			—		—				21.3	—				21.3			0.8		22.1
Other comprehensive loss	—			—		—			—		—			—			1.3			1.3		—			1.3
Balance June 26, 2020		40.3		$	0.1	$	306.0			0.6	$	(3.3	)	$	171.0	$	(3.3	)	$	470.5		$	17.7	$	488.2

	Six Months Ended
	June 26, 2020
	Common Stock								Treasury shares
(In millions)	Shares			Amount		Additional Paid-in Capital			Shares		Amount			Retained Earnings		Accumulated Other Comprehensive Income (Loss)			Total Stockholders’ Equity of UCT			Noncontrolling Interests		Total Equity
Balance December 27, 2019		39.9		$	0.1	$	300.9			0.6	$	(3.3	)	$	140.3	$	(1.3	)	$	436.7		$	15.8	$	452.5
Issuance under employee stock plans		0.5		—			0.3		—		—			—		—				0.3		—			0.3
Stock-based compensation expense	—			—			6.2		—		—			—		—				6.2		—			6.2
Taxes paid related to net share settlement of equity awards		(0.1	)	—			(1.4	)	—		—			—		—				(1.4	)	—			(1.4	)
Net income	—			—		—			—		—				30.7	—				30.7			1.9		32.6
Other comprehensive loss	—			—		—			—		—			—			(2.0	)		(2.0	)	—			(2.0	)
Balance June 26, 2020		40.3		$	0.1	$	306.0			0.6	$	(3.3	)	$	171.0	$	(3.3	)	$	470.5		$	17.7	$	488.2

1. ~~Organization and Significant Accounting Policies~~ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES

Organization — Ultra Clean Holdings, Inc., (the “Company” or “UCT”) a Delaware corporation, was founded in November 2002 ~~for the purpose of acquiring Ultra Clean Technology Systems~~ and Service, Inc. Ultra Clean Technology Systems and Service, Inc. was founded in 1991 by Mitsubishi Corporation and was operated as a subsidiary of Mitsubishi until November 2002, when it was acquired by UCT. UCT became a publicly traded company on the NASDAQ Global Market in March 2004. Ultra Clean ~~Technology (Shanghai) Co., Ltd (“UCTS”)~~Holdings, Inc. is a leading developer and ~~Ultra Clean Micro-Electronics Equipment (Shanghai) Co., Ltd. (“UCME”) were established in 2005~~supplier of critical subsystems, components and 2007, respectively, to facilitate the Company’s operations in China. In December 2015, UCTS merged into UCME. Ultra Clean Asia Pacific, Pte, Ltd. (Singapore) (“UCAP”) was established in fiscal year 2008 to facilitate the Company’s operations in Singapore. In July 2012, UCT acquired American Integration Technologies LLC (“AIT”) to add to the Company’s existing customer base in the semiconductorparts, and ~~medical spaces~~ultra-high purity cleaning and to provide additional manufacturing capabilities. In February 2015, UCT acquired Marchi Thermal Systems, Inc. (“Marchi”), a designer and manufacturer of specialty heaters, thermocouples and temperature controllers. Marchi delivers flexible heating elements and thermal solutions to our customers. The Company believes heaters are increasingly critical in equipment design for the most advanced semiconductor nodes. In July 2015, UCT acquired MICONEX s.r.o. (“Miconex”), a privately-held provider of advanced precision fabrication of plastics,analytical services primarily for the semiconductor ~~industry that expands the Company’s capabilities with existing customers.~~

industry. UCT offers its customers an integrated outsourced solution for major subassemblies, improved design-to-delivery cycle times, design for manufacturability, prototyping and part and component manufacturing, as well as tool chamber parts cleaning and coating, and micro-contamination analytical services. The Company ~~is a global leader in the design, engineering,~~operates and ~~manufacture of~~reports results for 2 operating segments: Products and Services (formerly known as “SPS” and “SSB”, respectively). The Company’s Products business primarily designs, engineers and manufactures production tools, components and parts, and modules and subsystems for the semiconductor and display capital equipment markets. Products include chemical delivery modules, frame assemblies, gas delivery systems, fluid delivery systems, precision robotics, process modules as well as other high-level assemblies. The Company’s Services business provides ultra-high purity parts cleaning, process tool part recoating, surface encapsulation and high sensitivity micro contamination analysis primarily for the semiconductor device makers and wafer fabrication equipment industry segments with similar requirements including consumer, medical and flat panel display. The Company focuses on providing specialized engineering and manufacturing solutions for these highly complex, highly configurable, limited volume applications. In addition,markets.

On March 31, 2021, the Company ~~routinely handles major volume~~completed the acquisition of Ham-Let (Israel-Canada) Ltd. (“Ham-Let”), a public company organized under the laws of the State of Israel (not a U.S. registrant), pursuant to an Agreement and ~~design changes during~~Plan of Merger (the “Merger Agreement”), for approximately $362.9 million, which included $273.5 million of equity value plus $91.3 million of net debt offset by the settlement of an existing relationship of $1.9 million. Ham-Let engages in the development, manufacturing and marketing of a process valves, fittings and ~~provides equipment manufacturers flexibility when responding to dynamic demand changes. The Company enables its customers to realize lower manufacturing costs~~hoses for the control and ~~reduced design-to-delivery cycle times while maintaining high quality standards.~~

~~The Company provides its customers with complete solutions that combine its expertise~~monitoring of industrial systems in ~~design, assembly, test~~a variety of markets, including the Semiconductor market. These products are primarily used in ultra clean gas transportation systems for the transmission of liquids and ~~component characterization.~~gases. The Company’s primary reason for this acquisition was to broaden UCT’s relevance to the semiconductor equipment market and provide access to a new set of customers ~~value its highly flexible global manufacturing operations, its excellence~~ in ~~quality control and its scale and financial stability. The Company’s global footprint enables~~ the Company to reduce manufacturing costs and design-to-delivery cycle times while maintaining high quality standards for the Company’s customers. The Company believes that these characteristics allow the Company to provide global solutions for its customers’ product demands. The Company ships the majority of its products to U.S. registered customers with locations both in and outside the U.S. In addition to its U.S. manufacturing capabilities, the Company manufactures products in its Asian facilities to support local and U.S. based customers. The Company conducts its operating activities primarily through its wholly-owned subsidiaries, Ultra Clean Technology Systems and Service, Inc., AIT, UCME, UCAP, Marchi and Miconex. The Company’s international sales represented 54.4% and 49.7% of total sales for the three months ended September 29, 2017 and September 23, 2016, respectively and 52.8% and 46.5% of total sales for the nine months ended September 29, 2017 and September 23, 2016, respectively.semiconductor fab infrastructure market. See Note 102 to the Company’s Condensed Consolidated Financial Statements for further information about the acquisition of Ham-Let.

On April 13, 2021, the Company completed an underwritten public offering of 3,181,818 shares of the Company’s ~~geographic areas.~~common stock, in which the Company received net proceeds of approximately $167.6 million, after deducting the underwriting discounts and offering expenses payable by the Company. On April 29, 2021, the Underwriters exercised the option to purchase an additional 477,272 shares of the Company’s common stock for approximately $25.2 million in cash. The Company intends to use the net proceeds from this offering for general corporate purposes, which may include working capital, sales and marketing activities, product development, general and administrative matters, and capital expenditures. The Company may use a portion of the net proceeds to acquire complementary businesses, products, services, or technologies, although it has no agreements, commitments, or plans for any specific acquisitions at this time.

Basis of Presentation — The unaudited ~~condensed consolidated financial statements~~Condensed Consolidated Financial Statements included in this quarterly report on Form 10-Q include the accounts of the Company and its ~~wholly-owned~~majority-owned subsidiaries and have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). This financial information reflects all adjustments which are, in the opinion of the Company, normal, recurring and necessary for the fair financial statement presentation for the dates and periods presented. Certain information and footnote disclosures normally included in our annual financial statements, prepared in accordance with GAAP, have been condensed or omitted. The Company’s December ~~30, 2016~~25, 2020 balance sheet data were derived from its audited financial statements as of that date.

~~Principles of Consolidation~~Fiscal Year — The Company’s condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries and all intercompany accounts and transactions have been eliminated in consolidation. The Company uses a 52-53 week fiscal year ending on the Friday nearest December 31. All references to quarters refer to fiscal quarters and all references to years refer to fiscal years.

Principles of Consolidation — The Company’s Condensed Consolidated Financial Statements include the accounts of the Company and its majority-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated upon consolidation.

Noncontrolling interests — Noncontrolling interests are recognized to reflect the portion of the equity of the majority-owned subsidiaries which is not attributable, directly or indirectly, to the controlling stockholder. The Company’s consolidated entities include partially-owned entities, which are (1) Cinos Co., Ltd (“Cinos Korea”), a South Korean company that provides outsourced cleaning and recycling of precision parts for the semiconductor industry through its operating facilities in South Korea, (2) Cinos Xian Clean Technology, Ltd. (“Cinos China”), a Chinese entity that is partially owned by Cinos Korea and (3) Rovac Pte, Ltd (“Rovac”), a Singaporean Company that is majority owned by Ham-Let. The interest held by others in Cinos Korea, in Cinos China and in Rovac are presented as noncontrolling interests in the accompanying Condensed Consolidated Financial Statements. The noncontrolling interests will continue to be attributed its share of gains and losses even if that attribution results in a deficit noncontrolling interests’ balance.

Segments — The Financial Accounting Standards Board’s (“FASB”) guidance regarding disclosure about segments in an enterprise and related information establishes standards for the reporting by public business enterprises of information about reportable segments, products and services, geographic areas, and major customers. The method for determining what information to report is based on the manner in which management organizes the reportable segments within the Company for making operational decisions and assessments of financial performance. The Company’s chief operating decision-maker is the Chief Executive Officer. The Company operates and reports 2 segments: Products and Services. Ham-Let’s business activities are similar to Products and, therefore, were included within this segment. See Note 16 of the Notes to the Condensed Consolidated Financial Statements.

Foreign Currency Translation and Remeasurement — The ~~Company has one foreign subsidiary, Miconex, whose~~ functional currency of the majority of the Products division’s foreign subsidiaries is ~~not its local currency or~~ the U.S. dollar. The functional currency of the Service division’s foreign subsidiaries is the local currency except for that of its Singapore and Scotland entities, which is the U.S. dollar.

For the Company’s foreign subsidiaries where the local currency is the functional currency, the Company ~~remeasures~~translates the ~~monetary~~financial statements of these subsidiaries to U.S. dollars using month-end exchange rates for assets and liabilities, ~~of this subsidiary into its functional currency. Gains~~and average exchange rates for revenue, costs and expenses. Translation gains and losses ~~from these remeasurements~~ are recorded in interest and other income (expense), net. The Company then translates the assets and liabilities of this subsidiary into the U.S. dollar. Gains and losses from these translations are recognized in foreign currency translation included in accumulated other comprehensive income (AOCI) within UCT stockholders’ equity. For the Company’s foreign subsidiaries where the U.S. dollar is the functional currency, any gains and losses resulting from the translation of the assets and liabilities of these subsidiaries are recorded in ~~interest and~~ other income (expense), net.

Use of ~~Accounting~~ Estimates — The presentation of financial statements in conformity with ~~accounting principles generally accepted in the United States of America~~GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosures of contingent liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Such estimates and assumptions include ~~reserves on~~ inventory valuation, accounting for income taxes, business combinations, valuation of ~~deferred tax~~goodwill, intangible assets and ~~impairment of goodwill and other~~ long-lived assets. The Company bases its estimates and judgments on historical experience and on various other assumptions that it believes are reasonable under the circumstances. However, future events are subject to change and the best estimates and judgments routinely require ~~adjustment.~~adjustments. Actual amounts may differ from those estimates.

Cash and Cash Equivalents — The Company considers currency on hand, demand deposits, time deposits, and all highly liquid investments with an original maturity of three months or less at the date of purchase to be cash and cash equivalents. Cash and cash equivalents are held in various financial institutions in the United States and internationally.

Concentration of Credit Risk — Financial instruments which subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. The Company sells its products and provides services primarily to semiconductor capital equipment manufacturers in the United States. The Company performs credit evaluations of its customers’ financial condition and generally requires no collateral.

~~Significant Sales to Customers~~ — The Company’s most significant customers (having accounted for 10% or more of ~~sales)~~revenues) and their related ~~sales~~revenues as a percentage of total ~~sales~~revenues were as follows:

~~Two~~NaN customers’ accounts receivable balances, Lam Research Corporation and Applied Materials, Inc., were individually greater than 10% of accounts receivable as of ~~September 29, 2017~~June 25, 2021, in the aggregate approximately 38.0% of accounts receivable. NaN of the Company’s customers account receivable balances, Lam Research Corporation, Applied Materials, Inc. and ASM International, Inc., were individually greater than 10.0% of total accounts receivable as of December ~~30, 2016,~~25, 2020, and in the aggregate ~~represented~~ approximately ~~76.7% and 85.0%~~67.3% of total accounts ~~receivable, respectively.~~receivable.

Fair Value of Measurements — The Company measures its cash equivalents, ~~foreign currency forward contracts, interest rate~~ derivative contracts, ~~and~~ contingent earn-out ~~liability~~liabilities, pension obligation and common stock purchase obligation at fair value on a recurring basis. Fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that is determined based on assumptions that market participants would use in pricing an asset or a liability. Assets and liabilities recorded at fair value are measured and classified in accordance with a three-tier fair value hierarchy based on the observability of the inputs available in the market used to measure fair value:

Level 1 — Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets.

Level 2 — Inputs that are based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant inputs are observable in the market or can be derived from observable market data. Where applicable, these models project future cash flows and discount the

future amounts to a present value using market-based observable inputs including interest rate curves, foreign exchange rates, and credit ratings.

Level 3 — Unobservable inputs that are supported by little or no market activities.

The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The following table summarizes, for assets or liabilities measured at fair value, the respective fair value and the classification by level of input within the fair value hierarchy (in thousands):

Derivative Financial Instruments — The Company uses forward contracts to hedge a portion of, but not all, existing and anticipated foreign currency denominated transactions typically expected to occur within 24 months. The purpose of the hedge is to mitigate the effect of exchange rate fluctuations on certain foreign currency denominated costs and eventual cash flows. The Company recognizes derivative instruments as either assets or liabilities in the accompanying Condensed Consolidated Balance Sheets at fair value. The Company records changes in the fair value of the derivatives in the accompanying Condensed Consolidated Statements of Operations as ~~interest and~~ other income (expense), net, or as a component of AOCI in the accompanying Condensed Consolidated Balance Sheets.

Inventories — Inventories are stated at the lower of ~~standard~~ cost (which approximates actual cost on a first-in, first-out basis) or ~~market.~~net realizable value. The Company evaluates the valuation of all inventories, including raw materials, work-in-process, finished goods and spare parts on a periodic basis. Obsolete inventory or inventory in excess of management’s estimated usage is ~~written-down~~written down to its estimated market value less costs to sell, if less than its cost. Inherent in the estimates of market value are management’s estimates related to economic trends, future demand for products, and technological obsolescence of the Company’s products.

Inventory write downs inherently involve judgments ~~as to~~based on assumptions about expected future demand and the impact of market conditions on those assumptions. Although the Company believes that the assumptions it used in estimating inventory write downs are reasonable, significant changes in any one of the assumptions in the future could produce a significantly different result. There can be no assurances that future events and changing market conditions will not result in significant increases in inventory write downs.

Property, Plant andEquipment, net — Property, plant and ~~Leasehold Improvements, net~~ ~~— Equipment and leasehold improvements~~equipment are stated at cost, or, in the case of equipment under ~~capital~~finance leases, the present value of future minimum lease payments at inception of the related lease. The Company also capitalizes interest on borrowings related to eligible capital expenditures. Capitalized interest is added to the cost of the qualified assets and is subject to depreciation. Depreciation and amortization are computed using the straight-line method over the lesser of the estimated useful lives of the assets or the terms of the leases. Useful lives range from three to ~~fifteen years.~~

~~Internal use software~~ —fifty years. Direct costs incurred to develop software for internal use are capitalized and amortized over an estimated useful life of three or ~~five years.~~ten years. Costs related to the design or maintenance of internal use software are expensed as incurred. Capitalized internal use software is included in computer equipment and software.

Long-lived Assets — The Company evaluates long-lived assets for impairment whenever events or changes in circumstances indicate the carrying value of an asset group may not be recoverable. The Company assesses the fair value of the assets based on the amount of the undiscounted future cash flows that the assets are expected to generate and recognizes an impairment loss when estimated undiscounted future cash flows expected to result from the use of the asset are less than the carrying value of the asset. If the Company identifies an impairment, the Company reduces the carrying value of the group of assets to comparable market values, when available and appropriate, or to its estimated fair value based on a discounted cash flow approach.

The Company assessed the useful lives of its long-lived assets, including property, plant and equipment as well as its intangible assets as of June 25, 2021 and concluded that 0 impairment was required.

Leases— The Company determines if an arrangement is a lease, or contains a lease, at the inception of the arrangement. When the Company determines the arrangement is a lease, or contains a lease, at lease inception, it then determines whether the lease is an operating lease or a finance lease. Operating and finance leases with lease terms of one year or greater result in the Company recording a right-of-use (ROU) asset and lease liability on its balance sheet. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent its obligation to make lease payments arising from the lease. Operating and finance lease ROU assets and liabilities are initially recognized based on the present value of lease payments over the lease term. In determining the present value of lease payments, the Company uses the implicit interest rate if readily determinable or when the implicit interest rate is not readily determinable, the Company uses its incremental borrowing rate. The incremental borrowing rate is not a commonly quoted rate and is derived through a combination of inputs including the Company’s credit rating and the impact of full collateralization. The incremental borrowing rate is based on the Company’s collateralized borrowing capabilities over a similar term of the lease payments. The Company utilizes the consolidated group incremental borrowing rate for all leases. The operating lease ROU asset also includes any lease payments made and excludes any lease incentives. Specific lease terms used in computing the ROU assets and lease liabilities may include options to extend or terminate the lease when the Company believes it is reasonably certain that it will exercise that option. Lease expense for operating lease payments is recognized on a straight-line basis over the lease term. As allowed by the guidance, the Company has elected not to recognize ROU assets and lease liabilities that arise from short-term (12 months or less) leases for any class of underlying asset. Operating leases are included in operating lease ROU assets, other current liabilities, and long-term operating lease liabilities on the Company’s consolidated balance sheet. The Company’s finance leases at June 25, 2021 and December 25, 2020 were not significant.

Goodwill and Indefinite Lived Intangible Assets — Goodwill and indefinite-lived intangible assets are not amortized, but are reviewed for impairment annually. Intangible assets are presented at cost, net of accumulated amortization, and are amortized on either a straight-line method or on an accelerated method over their estimated future discounted cash flows. The Company reviews goodwill and purchased intangible assets with indefinite lives for impairment annually and whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable, such as when reductions in demand or significant economic slowdowns in the semiconductor industry are present.

~~Construction~~Deferred Debt Issuance Costs — Debt issuance costs incurred in ~~progress~~connection with obtaining debt financing are deferred and presented as a direct deduction from Bank Borrowings in the accompanying Condensed Consolidated Balance Sheets. Deferred costs are amortized on an effective interest method basis over the contractual term.

Defined Benefit Pension Plan — ~~Construction in progress is related~~The Company has a noncontributory defined benefit pension plan covering substantially all of the employees of one of its foreign entities upon termination of their employee services. For further discussion of the Company’s defined benefit pension plan see Note 9 of the Notes to the ~~construction~~Condensed Consolidated Financial Statements.

Revenue Recognition — Revenue is recognized when control of the promised goods or ~~development of property and equipment that has not yet been placed in service for their intended use and~~services is ~~therefore, not depreciated. Construction in progress currently includes capitalized costs related~~transferred to the Company’s ~~new enterprise reporting system implementation project.~~

~~Product Warranty —~~customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. The Company ~~provides warranty on its products~~performs the following five steps to determine when to recognize revenue: (1) identification of the contract(s) with customers, (2) identification of the performance obligations in the contract, (3) determination of the transaction price, (4) allocation of the transaction price to the performance obligations in the contract, and (5) recognition of revenue when, or as, a performance obligation is satisfied.

Shipping and Handling Costs—Shipping and handling costs are included as a component of cost of revenues.

Research and Development Costs — Research and development costs are expensed as incurred.

Stock-Based Compensation Expense — The Company maintains stock-based compensation plans which allow for ~~a period~~the issuance of upequity-based awards to ~~two years~~executives and certain employees. These equity-based awards include restricted stock awards and restricted stock units. The Company also maintains an employee stock purchase plan (“ESPP”) that provides for ~~warranty costs at~~ the ~~time~~issuance of ~~sale based on historical activity. Determination~~shares to all eligible employees of the ~~warranty reserve requires~~Company at a discounted price.

Government Subsidies — Government subsidies are recognized where there is reasonable assurance that the ~~Company~~subsidy will be received and all attached conditions will be complied with. When the subsidy relates to ~~make estimates~~an expense item, it is recognized as income on a systematic basis over the periods that the related costs, for which it is intended to compensate, are expensed. When the subsidy relates to an asset, it is recognized as income in equal amounts over the expected useful life of ~~product return rates and expected costs~~the related asset. When the subsidy does not relate to ~~repair~~specific expenses or ~~replace~~assets, the ~~products under warranty. If actual return rates and/or repair and replacement costs differ significantly from these estimates, adjustments to recognize additional cost of sales may~~income is accounted for in the period where there is reasonable assurance that the subsidy will be ~~required in future periods. The warranty reserve is included in other current liabilities on the Condensed Consolidated Balance Sheets.~~

Income Taxes — The Company utilizes the asset and liability method of accounting for income taxes, under which deferred taxes are determined based on the temporary differences between the financial statement and tax basis of assets and liabilities using tax rates expected to be in effect during the years in which the basis differences reverse. Deferred income taxes arise from temporary differences between the tax basis of assets and liabilities and their reported amounts in the financial statements, which will result in taxable or deductible amounts in the future. In evaluating our ability to realize our deferred tax assets within the jurisdiction from which they arise, we consider all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax-planning strategies, and results of recent operations. In projecting future taxable income, we begin with historical results and incorporate assumptions about the amount of future federal, state, ~~federal,~~ and foreign pretax operating income adjusted for items that do not have tax consequences. The assumptions about future taxable income require significant judgment and are consistent with the plans and estimates we are using to manage the underlying businesses. In evaluating the objective evidence that historical results provide, we consider recent cumulative income (loss). A valuation allowance is recorded when it is more likely than not that some of the deferred tax assets will not be realized. ~~The Company continued to maintain a full valuation allowance on its federal, state, and one of its Singapore subsidiary’s deferred tax amounts as of September 29, 2017.~~

~~The determination of the Company’s tax provision is subject to judgments and estimates.~~ Income tax positions must meet a more likely than not recognition threshold to be recognized. ~~Income~~The Company recognizes tax benefits from uncertain tax positions ~~that previously failed to meet the~~only if it is more likely than not ~~threshold are~~that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the ~~first subsequent~~ financial ~~reporting period in which~~statements from such positions are then measured based on the largest benefit that ~~threshold is met. Previously recognized tax positions that no longer meet the more likely~~has a greater than ~~not threshold are derecognized in the first subsequent financial reporting period in which that threshold is no longer met.~~50% likelihood of being realized upon ultimate settlement. The Company recognizes potential accrued interest and penalties related to unrecognized tax benefits within the ~~Condensed Consolidated Statements~~consolidated statements of ~~Operations~~income as income tax expense. The calculation of tax liabilities involves significant judgment in estimating the impact of uncertainties in the application of complex tax laws. Resolution of these uncertainties in a manner inconsistent with the Company’s expectations could have a material impact on its results of operations and financial position. Management believes that it has adequately provided for any adjustments that may result from these examinations; however, the outcome of tax audits cannot be predicted with certainty.

~~Revenue Recognition~~ — Product revenue is generally recorded upon shipment. In arrangements that specify title transfer upon delivery, revenue is not recognized until ownership is transferred to the customer. The Company recognizes revenue when persuasive evidence of an arrangement exists, shipment has occurred, price is fixed or determinable and collectability is reasonably assured. If the Company has not substantially completed a product or fulfilled the terms of a sales agreement at the time of shipment, revenue recognition is deferred until fulfillment. The Company’s standard arrangement for its customers includes a signed purchase order or contract, no right of return of delivered products and no customer acceptance provisions.

The Company assesses collectability based on the credit worthiness of the customer and past transaction history. The Company performs on-going credit evaluations of customers and generally does not require collateral from customers.

~~Research and Development Costs~~ ~~— Research and development~~accounts for Global Intangible Low-Taxed Income (“GILTI”) as period costs ~~are expensed as~~when incurred.

Net Income per Share — Basic net income per share is computed by dividing net income by the weighted average number of shares outstanding for the period. Diluted net income per share is calculated by dividing net income by the weighted average number of

common shares outstanding and common equivalent shares from dilutive ~~stock options and~~ restricted stock using the treasury stock method, except when such shares are anti-dilutive. See Note 815 of the Notes to the ~~Company’s~~ Condensed Consolidated Financial Statements.

~~Segments~~ — The Financial Accounting Standards Board’s (FASB) guidance regarding disclosure about segments in an enterprise and related information establishes standards for the reporting by public business enterprises of information about reportable segments, products and services, geographic areas, and major customers. The method for determining what information to report is based on the manner in which management organizes the reportable segments within the Company for making operational decisions and assessments of financial performance. The Company’s chief operating decision-maker is considered to be the Chief Executive Officer. The Company operates in one operating segment, and therefore, has one reportable segment.

Business Combinations — The Company recognizes assets acquired (including goodwill and identifiable intangible assets), liabilities assumed and ~~liabilities assumed~~noncontrolling interest at fair value on the acquisition date. Subsequent changes to the fair value of such assets acquired and liabilities assumed are recognized in earnings, after the expiration of the measurement period, a period not to exceed 12 months from the acquisition date. Acquisition-related expenses and acquisition-related restructuring costs are recognized in earnings in the period in which they are incurred.

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financing Reporting. This guidance provides temporary optional expedients and exceptions through December 31, 2022 to the U.S. GAAP guidance on contract modifications to ease the financial reporting burdens of the expected market transition from the London Interbank Offered Rate (LIBOR) and other interbank offered rates to alternative reference rates. The Company maintains stock-based compensation plans which allow for the issuance of equity-based awards to executives, directors and certain employees. These equity-based awards include stock options, restricted stock awards (“RSAs”) and restricted stock units (“RSUs”) which can be either time-based or performance-based. The Company has not granted stock options to its employees since fiscal year 2010. The Company also maintains an employee stock purchase plan that provides for the issuance of shares to all eligible employees of the Company at a discounted price.

Stock-based compensation expense includes compensation costs related to estimated fair values of stock options and awards granted. The estimated fair value of the Company’s equity-based awards, net of expected forfeitures, is amortized on a straight-line basis over the awards’ vesting period, typically three years for RSUs and one year for RSAs, and is adjusted for subsequent changes in estimated forfeitures related to all equity-based awards and performance as it relates to performance-based RSUs. The Company applies the fair value recognition provisions based on the FASB’s guidance regarding stock-based compensation.

There were no options granted by the Company during either of the nine months ended September 29, 2017 and September 23, 2016. As of September 29, 2017, there was no stock-based compensation expense attributable to stock options as all outstanding options were fully vested.

The Company also maintains an employee stock purchase plan (“ESPP”) that provides for the issuance of shares to all eligible employees of the Company at a discounted price. Under the ESPP, substantially all employees may purchase the Company’s common stock through payroll deductions at a price equal to 95 percent of the fair market value of the Company’s stock at the end of each applicable purchase period.

~~The Company grants RSUs to employees and RSAs to non-employee directors as part of the Company’s long term equity compensation plan.~~

~~Restricted Stock Units~~ — RSUs are granted to employees with a per share or unit purchase price of zero dollars and either have time based or performance based vesting. RSUs typically vest over three years, subject to the employee’s continued service with the Company. For purposes of determining compensation expense related to these RSUs, the fair value is determined based on the closing market price of the Company’s common stock on the date of award. The expected cost of the grant is reflected over the service period, and is reduced for estimated forfeitures.

During the quarter ended September 29, 2017, the Company granted 353,880 RSUs, with a weighted average fair value of $22.62 per share, and granted 18,750 performance stock units with a weighted average fair value of $20.24 per share. During the second quarter ended June 30, 2017, the Company granted 185,752 RSUs, with a weighted average fair value of $19.80 per share, and granted 108,498 performance stock units with a weighted average fair value of $19.80 per share. There were no RSUs and PSUs granted during the quarter ended March 31, 2017.

During the nine months ended September 29, 2017, 145,023 vested shares were withheld to satisfy withholding tax obligations, resulting in the net issuance of 552,690 shares. As of September 29, 2017, approximately $13.1 million of stock-based compensation cost, net of estimated forfeitures, related to RSUs and PSUs remains to be amortized over a weighted average period of two years. As of September 29, 2017, a total of 1,715,845 RSUs and PSUs remain outstanding with an aggregate intrinsic value of $50.9 million and a weighted average remaining contractual term of 1.2 years.

~~Restricted Stock Awards~~ ~~— As of September 29, 2017, a total of 52,500 RSAs were outstanding. The total unamortized expense of the Company’s unvested restricted stock awards as of September 29, 2017, was $0.8 million.~~

~~The following table summarizes the Company’s RSU and RSA activity for the nine months ended September 29, 2017:~~

~~The following table shows the Company’s stock-based compensation expense included in the Condensed Consolidated Statements of Operations (in thousands):~~

In May 2014, the FASB amended the existing accounting standards for revenue recognition. In August 2015, the FASB delayed the effective date of the amended accounting standard for revenue recognition by one year. As such, the updated standard will be effective for the Company in the first quarter of 2018, which is when the Company plansexpects to adopt this ~~standard. The Company performed an assessment of the impact of these~~guidance and apply it to reference rate reform effected arrangement modifications.

Although there are several other new accounting ~~standards on its consolidated financial statements~~pronouncements issued by ~~outlining all revenue generating activities, mapping those activities to deliverables and tracing those deliverables to~~ the ~~standard. As a result,~~FASB, the Company does not believe ~~that the adoption~~any of ~~this guidance~~these accounting pronouncements had or will have a material impact on its ~~consolidated financial statements~~Consolidated Financial Statements.

On March 31, 2021, the Company acquired all of the outstanding common shares of Ham-Let for total purchase consideration of $362.9 million, which included $273.5 million of equity value plus $91.3 million of net debt offset by the settlement of an existing relationship of $1.9 million (vendor of UCT). In addition, the Company incurred approximately $10.5 million of costs related to the acquisition ($1.0 million incurred in fiscal year 2020 and ~~on its internal~~$9.5 million was charged to operations for the six months ended June 25, 2021). Ham-Let engages in the development, manufacturing and marketing of a process valves, fittings and hoses for the control ~~over financial reporting.~~and monitoring of industrial systems in a variety of markets, including the Semiconductor market. These products are primarily used in ultra clean gas transportation systems for the transmission of liquids and gases. The Company’s primary reason for this acquisition was to broaden UCT’s relevance to the semiconductor equipment market and provide access to a new set of customers in the semiconductor fab infrastructure market. The Company ~~plans~~borrowed an additional $355.0 million from its existing Credit Facility to ~~use~~finance the ~~modified retrospective transition method.~~acquisition. See further discussion in Note 7 to the Notes to Condensed Consolidated Financial Statements.

In December 2020, the Company announced the acquisition of Ham-Let. The ~~standard~~expected cash consideration for the equity valuation at that time was approximately 934.7 million Israeli New Shekel (“ILS”) or $287.1 million in equity value. In order to hedge against the foreign currency fluctuation of the USD against ILS at the settlement date, UCT received Board of Director approval to enter into forward hedge contracts to buy ILS. In January 2021, UCT completed the purchase of forward hedge contracts of 905.8 million ILS to lock in the $283.9 million cash that was delivered at the closing of the Ham-Let acquisition. US GAAP requires ~~new substantial disclosures~~the recording of the purchase price of the acquired entity at the spot rate on acquisition date, rather than the cash amount hedged and paid. The variance between the cash paid of $283.9 million and the spot value at acquisition of $273.5 million was a loss of $10.4 million and was recorded in the accompanying Condensed Consolidated Statements of Operations as other income (expense), net for the three and six month periods ended June 25, 2021.

The Company ~~will~~has preliminarily allocated the purchase price of Ham-Let to the tangible assets, liabilities, identifiable intangible assets acquired and noncontrolling interest, based on their estimated fair values. The excess of purchase price over the aggregate fair value was recorded as goodwill. Goodwill associated with the acquisition is primarily attributable to the future technology, market presence and knowledgeable and experienced workforce. The fair value assigned to identifiable intangible assets acquired was determined using the income approach taking into account the Company’s consideration of a number of inputs, including an independent third-party analysis that was based upon estimates and assumptions provided by the Company. These estimates and assumptions were determined through established and generally accepted valuation techniques. The estimated fair value of the tangible and intangible assets acquired was allocated at Ham-Let’s acquisition date.

The allocation of the purchase price is preliminary pending the completion of various analyses and the finalization of estimates. The primary areas of the preliminary purchase price allocation that are not yet finalized relate to the fair values of certain tangible assets and liabilities, primarily inventories, accounts receivable, property, plant and equipment, operating lease right-of-use assets and related operating lease liabilities, income and other taxes, intangible assets and residual goodwill. During the measurement period, which can be no more than one year from the date of acquisition, we expect to continue to ~~evaluate these disclosure requirements.~~

~~In July 2015,~~obtain information to assist us in determining the ~~FASB issued authoritative guidance that requires inventory to be measured~~final fair value of the net assets acquired at the ~~lower~~acquisition date during the measurement period. Assets acquired, liabilities assumed and noncontrolling interest are recorded based on valuations derived from estimated fair value assessments and assumptions used by the Company. Thus, the provisional measurements of ~~cost~~fair value discussed above are subject to change. The Company expects to finalize

the valuation as soon as practicable, but not later than one year from the acquisition date. While the Company believes that its estimates and ~~net realizable~~assumptions underlying the valuations are reasonable, different estimates and assumptions could result in different valuations assigned to the individual assets acquired, liabilities assumed and noncontrolling interest, and the resulting amount of goodwill.

The following table summarizes the preliminary fair values of assets acquired, liabilities assumed and noncontrolling interest at the date of acquisition (in millions):

Goodwill is not amortized but is reviewed for impairment at least annually and whenever events or changes in circumstances indicate that the carrying value ~~instead~~ of ~~at lower~~an asset may not be recoverable. The results of cost or market. This guidance does not apply to inventory that is measured using last-in, first out or the retail inventory method but applies to all other inventory including those measured using first-in, first-out or the average cost method. The authoritative guidance will be effectiveoperations for the Company for the three and six months ended June 25, 2021 include operating activities for Ham-Let since its acquisition date of March 31, 2021. For the three and six months ended June 25, 2021, net sales of approximately $58.2 million attributable to Ham-Let were included in the consolidated results of operations. For the three and six months ended June 25, 2021, results of operations included charges of $4.6 million attributable to amortization of purchased intangible assets. In addition, deal costs associated with the acquisition of $8.1 million and $9.5 million were included in the results of operations for the three and six months ended June 25, 2021, respectively. Deal costs are included in general and administrative expenses in the Company’s Condensed Consolidated Results of Operations.

The following unaudited pro forma consolidated results of operations assume the acquisition was completed as of the beginning of the year of the reporting periods presented.

The unaudited pro forma consolidated results of operations for the three and six months ended June 25, 2021 and June 26, 2020 (in millions, except per share amounts) as follows:

The unaudited pro forma results above include adjustments related to the purchase price allocation and financing of the acquisition, primarily to increase amortization for the identifiable intangible assets, to increase interest expense for the additional debt incurred to complete the acquisition, and to reflect the related income tax effect. The unaudited pro forma results for the three and six months ended June 26, 2020 include acquisition related costs of $14.9 million which are not expected to occur in future quarters. The unaudited pro forma condensed combined financial information has been prepared by management for illustrative purposes only and are not necessarily indicative of the condensed consolidated financial position or results of income in future periods or the results that would have been realized had UCT and Ham-Let been a combined company during the specified periods. The unaudited pro forma condensed combined financial information does not reflect any operating efficiencies and/or cost savings that the Company may achieve with respect to the combined companies, or any liabilities that may result from integration activities.

On April 15, 2019, the Company purchased substantially all of the assets of DMS, a semiconductor weldment and solutions provider based in Austin, Texas. Pursuant to the purchase agreement, the former owners of DMS were entitled to receive up to $12.5 million of potential cash earn-out if the combined weldment business, after the acquisition, achieved certain gross profit and gross margin targets for the twelve months ending June 26, 2020. During the second quarter of fiscal year 2020, DMS achieved the specified performance target of the earn-out, which resulted in the maximum payment of $12.5 million paid in August 2020. In the first quarter of fiscal ~~2018~~year 2020, the Company completed the acquisition accounting and ~~should be applied prospectively. Early adoption is permitted as~~the valuation of the ~~beginning of an interim or annual reporting period. The Company is currently evaluating the effect of this new guidance on the Company’s consolidated financial statements.~~

In February 2016, the FASB issued new guidance related to how an entity should recognize lease assets and lease liabilities. The guidance specifies that an entity who is a lessee under lease agreements should recognize lease assets and lease liabilities for those leases classified as operating leases under previous FASB guidance. The guidance is effective beginning in the first quarter of 2019. Early adoption is permitted. In transition, lessees and lessors are required to recognize and measure leases at the beginningfair value of the ~~earliest period presented using a modified retrospective approach. The Company is evaluating~~assets acquired and the ~~impact of adopting this guidance on the Company’s consolidated financial statements.~~liabilities assumed.

Inventories consisted of the ~~accounting for share-based payment transactions including the income tax consequences, classification of awards as either equity or liabilities,~~following:

Property, plant and classification on the statement of cash flows. Under the new standard, income tax benefits and deficiencies are to be recognized as income tax expense or benefit in the income statement and the tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. An entity should also recognize excess tax benefits regardless of whether the benefit reduces taxes payable in the current period. Excess tax benefits should be classified along with other income tax cash flows as an operating activity. In regards to forfeitures, the entity may make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest or account for forfeitures when they occur. The Company adopted the amended accounting guidance in the first quarter of 2017 and recognized $1.7 million of previously excluded tax attributes related to stock option windfall deductions and also recognized a corresponding offset to valuation allowance. Forfeitures will continue to be estimated consistent with the Company's existing accounting policies. The impact to the Company's financial condition, results of operations and cash flows will vary based on, among other factors, the market priceequipment, net, consisted of the ~~Company's common stock.~~following:

During the FASB issued an amendment to its accounting guidance related to the classification of certain cash receipts and cash payments. The amendment was issued to reduce the diversity in practice in how certain transactions are classified in the statement of cash flows. The amendment will be effective for the Company beginning in its first quarter of fiscal year ~~2019 with early adoption permitted. The amendment is required~~2020, the Company made a strategic decision to ~~be adopted retrospectively unless it is impracticable. The~~fully integrate Quantum Global Technologies, LLC’s (“QGT”) corporate office responsibilities from Quakertown, PA to UCT’s corporate office in Hayward, CA. As a result, the Company ~~is evaluating~~recorded a restructuring charge of $0.9 and $1.9 million for the ~~impact~~three and six months ended June 26, 2020, respectively, in general and administrative expense, primarily related to employee severance as well as the impaired value of ~~adopting this amendment~~the facility lease and losses on sale of equipment.

In September 2018, a fire in a facility owned by Cinos Korea destroyed certain assets, including equipment, the building and inventory owned by one of its customers. During the first fiscal quarter of 2021, the Company received final insurance proceeds related to ~~its consolidated financial statements.~~the Cinos fire of $7.3 million, which was recorded for the six months ended June 26, 2021 in the accompanying Condensed Consolidated Statements of Operations as other income (expense), net. No insurance proceeds were received in the comparable period in the prior year.

The fair value hierarchy requires an entity to maximize the ~~FASB clarified its guidance to simplify~~use of observable inputs and minimize the ~~measurement~~use of ~~goodwill~~unobservable inputs when measuring fair value. The following table summarizes, for assets or liabilities measured at fair value, the respective fair value and the classification by ~~eliminating the Step 2 impairment test. The new guidance requires companies to perform goodwill impairment test by comparing~~level of input within the fair value hierarchy:

The estimated fair value of ~~a reporting unit~~foreign currency forward contracts is based upon quoted market prices obtained from independent pricing services for similar derivative contracts and these financial instruments are characterized as Level 2 assets in the fair value hierarchy.

A wholly-owned subsidiary of Ham-Let owns 70.0% interest in Rovac with ~~its carrying amount.~~an option to acquire the remaining 30.0% ownership interest. The ~~amendment will be effective for~~fair value of the ~~Company beginning~~purchase option recorded in ~~its first quarter~~the Company’s financial statements was determined using the Black Scholes option pricing model which utilizes the stock price of fiscal year 2021. The amendment is required to be adopted prospectively. Early adoption is permitted. The Company is evaluating the impact of adopting this amendment to its consolidated financial statements.

~~In January 2017, the FASB clarified its guidance~~Rovac, volatility, expected life and risk-free interest rate based on the ~~definition of~~implied yield available on U.S. Treasury Securities with a ~~business~~maturity equivalent to the purchase option’s expected life. These assumptions were developed during the valuation process resulting in ~~accounting for transactions when determining whether they represent acquisitions or disposals of assets or of~~ a business. The amendment will be effective for the Company beginning in its first quarter of fiscal year 2019. The amendment is required to be adopted prospectively. The Company is evaluating the impact of adopting this amendment to its consolidated financial statements.Level 3 classification

In ~~August~~ ~~2017,~~The estimated fair value of the ~~FASB issued new guidance which improves the financial reporting of hedging relationships to better portray the economic results~~common stock purchase obligation is based on a combination of an ~~entity’s risk management activities~~income and market valuation approach. The income and market valuation approaches may incorporate Level 3 fair value measures for instances when observable inputs are not available. The more significant judgmental assumptions used to estimate the value of the common stock purchase obligation include an estimated discount rate, a range of assumptions that form the basis of the expected future net cash flows (e.g., the revenue growth rates and operating margins), and a company specific beta. The significant judgmental assumptions used that incorporate market data, including the relative weighting of market observable information and the comparability of that information in ~~its financial statements~~the valuation models, are forward-looking and ~~simplifies~~could be affected by future economic and market conditions.

The estimated fair value of the ~~application~~pension obligation is based on expected years of ~~hedge accounting. This standard will be effective~~service and average compensation. The valuation model used to value the pension obligation utilizes mortality rate, inflation, interest rate risks and changes in the life expectancy for pensioners. These assumptions are routinely made in the ~~Company beginning~~appraisal process by the independent actuary thus resulted in ~~its first quarter of fiscal year 2019 with early adoption permitted. The Company is evaluating the impact of adopting this amendment to its consolidated financial statements and related disclosures.~~a Level 3 classification.

There were no transfers from Level 1 or Level 2. ~~Financial Instruments~~Fair value adjustments were noncash, and therefore did not impact the Company’s liquidity or capital resources. Qualitative information about Level 3 fair value measurements is as follows:

The Company utilizes foreign currency forward contracts ~~with a local financial institution in the Czech Republic~~ to reduce the risk that its cash flows and earnings ~~of its Miconex subsidiary~~ will be adversely affected by foreign currency exchange rate fluctuations ~~and~~ ~~uses certain interest rate derivative contracts to hedge interest rate exposures on existing floating rate debt.~~. The Company classifies its foreign currency forward ~~contracts and interest rate derivative contracts primarily~~ within Level 2 of the fair-value hierarchy discussed in Note 14 of the Company’s Condensed Consolidated Financial Statements as the valuation inputs are based on quoted prices and market observable data of similar instruments. ~~The Company does not use derivatives for speculative or trading purposes.~~

In September 2015, the Company entered into an interest rate swap with East West Bank and City National Bank with a notional amount of $20.0 million pursuant to which the Company pays the counterparty a fixed rate of 0.99% and receives interest at a variable rate equal to the London Interbank Offered Rate (LIBOR) rate the Company is required to pay under its term loan, or 1.24%, as of September 29, 2017. This interest rate swap effectively locks in a fixed interest rate of 3.74% on $9.3 million of the $13.3 million term loan as of September 29, 2017, with a decreasing notional amount based on prorated quarterly principal payments over the remaining period of the term loan. In 2017, Miconex entered into foreign currency forward contracts to hedge certain forecasted costs and expenses transactions denominated in currencies other than Miconex’s local currency. The notional principal of these contracts was approximately $16.0 million as of September 29, 2017. These contracts have maturities of 36 months or less. Gains or losses on the effective portion of a cash flow hedge are reflected as a component of AOCI and subsequently recorded to interest and other income (expense) and/or to cost of goods sold when the hedged transactions are realized. If the hedged transactions become probable of not occurring, the corresponding amounts in AOCI would be immediately reclassified to interest and other income (expense), net. As of September 29, 2017, the effective portion of the Company’s cash flow hedge before tax effect was $1.1 million, of which $0.6 million is expected to be reclassified from AOCI into earnings within the next 12 months.

The ~~Miconex interest rate swap~~Company uses foreign currency contracts to ~~convert~~economically hedge the ~~variable interest rates on Miconex debt to fixed rates with a total notional amount~~functional currency equivalent cash flows of ~~$0.3 million~~non-U.S. dollar- denominated acquisitions. The change in fair value of these derivatives is ~~not designated as a hedging instrument. The Company recognizes gains and losses on this contract, as well any related costs~~recorded through earnings in ~~interest and~~ other income (expense), net.

The Company records all derivatives in the Condensed Consolidated Balance Sheets at fair value. The Company’s accounting treatment for these derivative instruments is based on its hedge designation. The following tables show the Company’s derivative instruments at gross fair value ~~(in thousands)~~ as of ~~September 29, 2017 and~~June 25, 2021and December ~~30, 2016.~~25, 2020.

December 30, 2016

Fair Value of

Fair Value of

Derivatives

Derivatives Not

Balance Sheet

Designated as

Designated as

Total

Location

Hedge Instruments

Hedge Instruments

Fair Value

Derivative assets and liabilities:

Level 2:

Interest rate swap

Other non-current assets

$
15

$
—

$
15

Interest rate swap

Deferred rent and other liabilities

$
—

$
6

$
6

June 25, 2021

Fair Value of

Derivatives

Derivatives Not

Balance Sheet

Designated as

Total

(In millions)

Location

Hedge Instruments

Fair Value

Derivative liabilities:

Level 2:

Forward contracts

Prepaid expenses and other

0.1

—

0.1

December 25, 2020

Fair Value of

Derivatives

Derivatives Not

Balance Sheet

Designated as

Total

(In millions)

Location

Hedge Instruments

Fair Value

Derivative assets

Level 2:

Forward contracts

Prepaid expenses and other

—

1.1

The effect of derivative instruments in cash flow hedging relationships on income and other comprehensive income (OCI) is summarized ~~below (in thousands):~~

~~There were no gains (losses) recognized in~~The amount of gain or loss reclassified from accumulated OCI into income ~~on derivatives that are excluded from the effectiveness testing and ineffective portion of the cash flow hedge~~is not significant for the three and ~~nine~~six months ended ~~September 29, 2017~~June 25, 2021 and ~~September 23, 2016.~~

~~The effect of derivative instruments not designated as hedging instruments on income~~ for the three and ~~nine~~six months ended ~~September 29, 2017 and September 23, 2016 is not significant~~June 26, 2020.

In 2020, the Company entered into multiple foreign currency contracts to hedge the functional currency equivalent cash flows related to the ~~financial statements.~~non-U.S. dollar-denominated acquisition price of Ham-Let. As of March 26, 2021, these contracts were terminated and the $10.4 million liability related to these forward hedge contracts was paid on March 31, 2021 in conjunction with the acquisition of Ham-Let.

~~Equipment and leasehold improvements, net, consisted of the following (in thousands):~~

On July 31, 2015, the Company acquired 100% of the shareholding interest of Miconex. Pursuant to the purchase agreement, the Company paid $15.6 million in cash and issued 500,000 shares of the Company’s common stock. In addition, the former owners of Miconex are entitled up to $4.0 million of potential cash “earn-out” payments over a two-year period following closing, based on Miconex’s achievement of specified performance targets based on earnings before interest and taxes pursuant to the provisions of the purchase agreement. In 2016, Miconex achieved the specified performance targets for the first year and was paid the maximum of $2.0 million of the $4.0 million potential cash earn-out.

The fair value of the earn-out payments was determined by providing risk adjusted earnings projections using the Monte Carlo Simulation. These inputs are not observable in the market and thus represent a Level 3 measurement as discussed in Note 1 of the Company’s Consolidated Financial Statements. During the fiscal year 2017, the Company reassessed the fair value of the earn-out payments, decreasing the fair value from $0.3 million as of December 30, 2016 to nil as of September 29, 2017. Miconex failed to achieve the specified performance target for the second year. The decrease of $0.3 million was recorded as other income in the Condensed Consolidated Statements of Operations.

~~5. Goodwill and Purchased Intangible Assets~~6. GOODWILL AND INTANGIBLE ASSETS

The Company’s methodology for allocating the purchase price relating to ~~purchase acquisitions~~an acquisition is determined through established and generally accepted valuation techniques. Goodwill is measured as the excess of the ~~cost of the acquisition~~consideration transferred over the sum of the amounts assigned to tangible and identifiable intangible assets acquired less liabilities assumed.

Goodwill and purchased intangible assets with indefinite useful lives are not amortized, but are reviewed for impairment at least annually and whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. The Company regularly monitors current business conditions and other factors including, but not limited to, adverse industry or economic trends and lower projections of profitability that may impact future operating results.

To test goodwill for impairment, the Company first performs a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If the Company concludes it is ~~concluded~~more likely than not that ~~this is~~ the ~~case,~~fair value of a reporting unit exceeds its carrying amount, the Company ~~then performs the two-step goodwill~~does not proceed to perform a quantitative impairment test. ~~Otherwise,~~If the ~~two-step~~Company concludes it is more likely than not that the fair value of the reporting unit is less than its carrying value, a quantitative goodwill impairment test ~~is not required. Under~~will be performed by comparing the ~~two-step goodwill impairment test, the Company would in the first step compare the estimated~~ fair value of each reporting unit to its carrying value. ~~The Company determines~~A quantitative impairment analysis, if necessary, considers the ~~fair~~income approach, which requires estimates of the present value of ~~each of its~~expected future cash flows to determine a reporting ~~units based on a weighting of income~~unit’s fair value. Significant estimates include revenue growth rates and operating margins used to calculate projected future cash flows, discount rates, and future economic and market ~~approaches. If~~conditions. A goodwill impairment charge is recognized for the ~~carrying value of a reporting unit exceeds its fair value, the Company would then perform the second step of the impairment test in order to determine the implied fair value of~~amount by which the reporting unit’s ~~goodwill. If the Company determines that the carrying value of a reporting unit’s goodwill exceeds its implied~~ fair value is less than its carrying value. Any loss recognized should not exceed the ~~Company would record an~~total amount of goodwill allocated to that reporting unit. The process of evaluating the potential impairment ~~charge equal to the difference.~~

~~The evaluation~~ of goodwill and intangible assets ~~for impairment~~ requires ~~the exercise of~~ significant judgment. ~~In the event of future changes in~~The Company regularly monitors current business conditions and other factors including, but not limited to, adverse industry or economic trends and lower projections of profitability that may impact future operating results.

Details of aggregate goodwill of the Company ~~will be required to reassess and update its forecasts and estimates used in future impairment analyses. If the results of these future analyses~~ are ~~lower than current estimates, a material impairment charge may result at that time. Details of goodwill and other intangible assets were~~ as ~~follows (in thousands):~~

Intangible assets are generally recorded in connection with a business acquisition. The Company evaluates the useful lives of its intangible assets each reporting period to determine whether events and circumstances require revising the remaining period of amortization. In addition, the Company reviews indefinite lived intangible assets for impairment when events or changes in circumstances indicate their carrying value may not be recoverable and tests definite ~~lives~~lived intangible assets at least annually for impairment. Management considers such indicators as significant differences in product demand from the estimates, changes in the competitive and economic environment, technological advances, and changes in cost structure.

Details of ~~purchased~~ intangible assets were as ~~follows (in thousands):~~follows:

	As of September 29, 2017							As of December 30, 2016										As of June 25, 2021							As of December 25, 2020
	Gross							Gross										Gross							Gross
	Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying		Useful		Useful Life	Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying
	Amount		Amortization			Value		Amount		Amortization			Value		Life
AIT
(Dollars in millions)																	(in years)	Amount		Amortization			Value		Amount		Amortization			Value
Customer relationships	$	19,000	$	(17,763	)	$	1,237	$	19,000	$	(17,058	)	$	1,942		7	6 - 10	$	193.3	$	(57.9	)	$	135.4	$	119.4	$	(50.6	)	$	68.8
Tradename		1,900		(1,900	)		—		1,900		(1,900	)		—		6	4 - 6*		36.8		(14.1	)		22.7		27.0		(11.7	)		15.3
Intellectual property/know-how		1,600		(1,200	)		400		1,600		(1,029	)		571		7	7 - 15		49.4		(11.1	)		38.3		13.9		(9.8	)		4.1
Marchi
Customer relationships		9,900		(2,640	)		7,260		9,900		(1,898	)		8,002		10
Tradename		1,170		(603	)		567		1,170		(443	)		727		6
Intellectual property/know-how		12,300		(3,678	)		8,622		12,300		(2,643	)		9,657	8-12
Miconex
Customer relationships		8,800		(2,542	)		6,258		8,800		(1,662	)		7,138		7.5
UCT
Tradename		8,987		—			8,987		8,987		—			8,987	*
Recipes																	20		73.2		(10.4	)		62.8		73.2		(8.5	)		64.7
Standard operating procedures																	20		8.6		(1.2	)		7.4		8.6		(1.0	)		7.6
Backlog																	1		5.2		(1.3	)		3.9		—		—			—
Total	$	63,657	$	(30,326	)	$	33,331	$	63,657	$	(26,633	)	$	37,024				$	366.5	$	(96.0	)	$	270.5	$	242.1	$	(81.6	)	$	160.5

The Company amortizes its ~~tradenames for AIT and Marchi and customer relationships~~ intangible ~~asset for AIT using an~~assets on a straight-line or accelerated ~~method~~basis over the estimated economic life of the assets, ranging from 6 to 10 years. The Company amortizes its intellectual property/know-how and customer relationships intangible assets for Marchi and Miconex on a straight-line basis with an estimated economic life of the assets ranging from 7 to 12 years.assets. Amortization expense was approximately ~~$1.2~~$9.5 million and ~~$1.4~~$14.4 million for the three and six months ended ~~September 29, 2017~~June 25, 2021, respectively, and ~~September 23, 2016,~~$4.9 million and $9.9 million for the three and six months ended June 26, 2020, respectively. Amortization expense related to recipes, standard operating procedures and certain intellectual property/know-how is charged to cost of revenues and the remainder is charged to general and administrative expense. As of ~~September 29, 2017,~~June 25, 2021, future estimated amortization expense is expected to be as ~~follows (in thousands):~~follows:

~~The~~In August 2018, the Company ~~has~~entered into a credit ~~facilities in the U.S.~~agreement with Barclays Bank that provided a Term Loan, a Revolving Credit Facility, and ~~Czech Republic that expire on February 2, 2019 and March 31, 2020, respectively. The Company~~a Letter of Credit Facility (the “Credit Facility”). UCT and certain of its subsidiaries have agreed to secure all of their obligations under ~~a credit agreement (the “Credit Agreement”)~~the Credit Facility by granting a first priority lien in substantially all of their respective personal property assets (subject to certain exceptions and limitations).

~~As of September 29, 2017,~~ In August 2018, the ~~outstanding amounts~~Company borrowed $350.0 million under the ~~U.S.~~ Term Loan and ~~Revolving~~used the proceeds, together with cash on hand, to finance the acquisition of QGT and to refinance its previous credit facilities.

On March 31, 2021, the Company entered into a Second Amendment (the “Second Amendment”) to the Credit Facility to, among other things, (i) refinance and reprice its approximately $272.8 million of existing term B borrowings that will remain outstanding (the “Repricing”) and (ii) obtain a $355.0 million senior secured incremental term loan B facility ~~were $13.3~~(the “Incremental Term Loan”) with Barclays Bank, which increased the amount of term loan indebtedness outstanding under the Company’s Credit Facility.

The Term Loan has a maturity date of August 27, 2025, with monthly interest payments in arrears, quarterly principal payments of 0.625% of the outstanding principal balance thereof as of March 31, 2021, with the remaining principal paid upon maturity. Under the Credit Agreement, the Company may elect that the term loans bear interest at a rate per annum equal to either (a) “ABR” (as defined in the Credit Agreement), plus the applicable margin or (b) the “Eurodollar Rate” (as defined in the Credit Agreement), based on LIBOR, plus the applicable margin. The applicable margin for the term loan under the Credit Agreement is equal to a rate per annum to either (i) at any time that the Company’s corporate family rating is Ba3 (with a stable outlook) or higher from Moody’s and BB- (with a stable outlook) or higher from S&P, (x) 3.50% for such Eurodollar term loans and (y) 2.50% for such ABR term loans or (ii) at all other times, (x) 3.75% for such Eurodollar term loans and (y) 2.75% for such ABR term loans. Interest on the term loans is payable on (1) in the case of such ABR term loans, the last day of each calendar quarter and (2) in the case of such Eurodollar term loans, the last day of each relevant interest period and, in the case of any interest period longer than three months, on each successive date three months after the first day of such interest period. On March 29, 2021, the Company elected that the term loan outstanding as of March 31, 2021 accrue interest based on the “Eurodollar Rate” for an initial interest period of one month. As of March 31, 2021, the applicable margin with respect to the term loan facility was 3.75%. Pursuant to the Second Amendment to the Credit Agreement made effective on March 31, 2021, the Credit Agreement contains customary LIBOR replacement provisions in the event LIBOR is discontinued. At June 25, 2021, the Company had an outstanding amount under the Term Loan of $598.9 million, ~~and $39.9 million, respectively,~~ gross of unamortized debt issuance costs of ~~$0.2 million. The aggregate principal amount of the Revolving Credit facility is $40.0~~$15.3 million. As of ~~September 29, 2017,~~June 25, 2021, the interest ~~rates~~rate on the outstanding ~~U.S.~~ Term Loan ~~and~~was 3.84%.

The Revolving Credit ~~facility were 3.99%~~Facility has an initial available commitment of $65.0 million and ~~4.25%, respectively.~~

~~In order~~a maturity date of August 27, 2023. The Company pays a quarterly commitment fee in arrears equal to ~~manage interest rate risk on the variable component~~0.25% of the ~~Term Loan,~~average daily available commitment outstanding.

The Credit Agreement requires the Company entered into an interest rate swap in September 2015 with a total notional amount of $20.0 million (which amount decreases based on prorated quarterly principal payments over the remaining period of the Term Loan) pursuant to which the Company pays the counterparty a fixed rate of 0.99% and receives interest at a variable rate equal to the LIBOR rate the Company is required to pay under its Term Loan, or 1.24%, as of September 29, 2017. This interest rate swap effectively locks in a fixed interest rate of 3.74% on $9.3 million of the $13.3 million term loan balance outstanding as of September 29, 2017.

~~The Company is required~~ to maintain certain financial covenants including a consolidated fixed charge coverage ratio (as defined in the New Credit Agreement) as of the last day of any fiscal quarter of at least 1.25 to 1.00, and a consolidated leverage ratio (as defined in the Credit Agreement) as of the last day of any fiscal quarter of no greater than ~~3.5~~3.75 to ~~1.00 and a minimum cash balance of $35.0 million at the end of each quarter.~~1.00. The Company was in compliance with all financial covenants ~~for~~as of the quarter ended ~~September 29, 2017.~~ June 25, 2021.

The Letter of Credit ~~Agreement also contains provisions requiring the following mandatory prepayments~~Facility has an initial available commitment of $50.0 million and a maturity date of August 27, 2023. The Company pays quarterly in arrears a fee equal to 2.5% (subject to certain ~~exceptions~~adjustments as per the Term Loans) of the dollar equivalent of all outstanding letters of credit, and ~~limitations): annual prepayments in an amount~~a fronting fee equal to ~~(a) 33%~~0.125% of ~~excess cash flow (as defined in~~ the ~~Credit Agreement) if the aggregate outstanding principal~~undrawn and unexpired amount of each letter of credit. As of June 25, 2021, the ~~Term Loan equals or exceeds $20.0~~Company had $2.4 million of outstanding letters of credit with beneficiaries such as landlords of certain facility leases, insurance providers and ~~(b) 25% of excess cash flow if~~government agencies making up the ~~aggregate outstanding principal amount~~majority of the ~~Term Loan equals or exceeds $10.0~~outstanding balance. The remaining available commitments are $47.6 million ~~but is less than $20.0 million. The~~on the Letter of Credit Facility and $65.0 million on the Revolving Credit Facility.

In 2020, Cinos China amended its existing Credit Agreement ~~also restricts the Company~~and entered into two additional Credit Agreements with a local bank that provide Revolving Credit Facilities for a total available commitment of $3.5 million with various maturity dates through September 23, 2022 and interest rates ranging from ~~declaring or paying any cash dividends.~~2.0% to 4.1%. As of June 25, 2021, Cinos China had outstanding debt of $ 2.7 million with an average interest rate of 3.1% under these Credit Agreements.

~~In conjunction with the acquisition of Miconex in July 2015, the Company~~Cinos Korea has a ~~separate~~Credit Agreement that provides a Revolving Credit Facility for a total available commitment of 0.6 billion Korean Won (approximately $0.5 million) with annual renewals beginning June 2022 with an interest rate of 2.9%. During the six months ended June 26, 2020, borrowings under the Revolving Credit Facility were insignificant and 0 debt was outstanding as of June 25, 2021.

UCT Fluid Delivery Solutions s.r.o. has a credit agreement with a local bank in the Czech Republic that provides for a ~~term loan in an aggregate of 0.8 million euros and a~~ revolving credit facility in the aggregate of up to ~~8.3~~6.0 million euros. The credit agreement requires Miconex to maintain certain financial covenants, including a debt-to-earnings-before-interest-depreciation-and-amortization ratio no greater than 3.00 to 1.00 and an equity ratio of at least 15%. As of ~~September 29, 2017, Miconex~~June 25, 2021, no debt was ~~in compliance~~outstanding under this revolving credit facility.

Ham-Let has credit facilities and other loan agreements with ~~all of its covenants.~~

various financial institutions. As of ~~September 29, 2017, Miconex~~June 25, 2021, Ham-Let had $8.4 million of outstanding amounts under the term loan and revolving credit facility of 0.3 million euros (approximately $0.4 million) and 3.3 million euros (approximately $3.9 million), respectively, for a total of $4.3 million,debt with interest rates ranging from ~~1.3%~~1.8% to ~~2.3% plus a variable rate based on the Euro Interbank Offered Rate with due dates ranging from 2017 to 2020.~~4.6%.

As of ~~September 29, 2017,~~June 25, 2021, the Company’s total bank debt was ~~$57.3~~$594.7 million, net of unamortized debt issuance costs of $15.3 million. As of June 25, 2021, the Company had $65.0 million, $9.8 million and ~~the Company has $0.1~~$0.8 million ~~and 4.9 million euros (approximately $5.8 million)~~ available to borrow on its revolving ~~loans~~credit facilities in the U.S., Czech Republic and ~~Czech Republic,~~China, respectively.

The fair value of the Company’s ~~long term~~long-term debt was based on Level 2 inputs, and fair value was determined using quoted prices for similar liabilities in inactive markets. The fair value of the Company’s outstanding borrowings under the Company’s revolving credit facilities was based on Level 2 inputs, and fair value was determined using inputs other than quoted prices that are observable, specifically, discounted cash flows of expected payments at current borrowing rates. The Company’s carrying value approximates fair value for the Company’s ~~long term debt and revolving credit facilities.~~long-term debt.

The Company's effective tax rate was 25.6% and 20.5% for the three months ended June 25, 2021 and June 26, 2020, respectively, and 23.2% and 23.8% for the six months ended June 25, 2021 and June 26, 2020. The Company’s income tax provision was $6.2 million and ~~effective tax rates~~$5.7 million for the three ~~and nine~~ months ended ~~September 29, 2017 were $3.5 million~~June 25, 2021 and ~~15.2%~~June 26, 2020, respectively, and ~~$11.1 million~~$13.2 and ~~17.0%, respectively compared to $2.8 million and 51.3% and $6.4 million and 98.5%, respectively~~$10.2 for the ~~three and nine~~six months ended ~~September 23, 2016.~~June 25, 2021 and June 26, 2020. The change in respective rates reflects, primarily, changes in the geographic mix of worldwide earnings and financial results ~~including the impact of income and losses~~ in jurisdictions ~~with full federal~~which are taxed at different rates and ~~state valuation allowances for the three and nine months ended September 29, 2017 compared to~~ the impact of losses in jurisdictions with full federal and state valuation ~~allowances for the three and nine months ended September 23, 2016.~~

Company management continuously evaluates the need for a valuation allowance and, as of ~~September 29, 2017,~~June 25, 2021, concluded that a full valuation allowance on its U.S. federal and state deferred tax assets ~~as well as the deferred tax assets of one its Singapore subsidiaries~~ was still appropriate.

The Company ~~adopted~~ ~~Accounting Standards Update~~ ~~No. 2016-09 (ASU 2016-09) in~~provides for U.S. income taxes on the ~~first quarter~~earnings of ~~2017. Prior~~its foreign subsidiaries to the ~~adoption of ASU 2016-09, tax attributes related to stock option windfall deductions were not recorded until they resulted in~~extent required by the Tax Cuts and Jobs Act (TCJA). In a reduction of cash tax payable. As of December 30, 2016, the excluded windfall deductions for federal and state purposes were $1.6 million and $0.2 million (tax effected), respectively. Upon adoption of ASU 2016-09,prior period, the Company has also recognized ~~the excluded windfall deductions as~~ a deferred tax ~~asset with~~liability for taxes that would be withheld on a ~~corresponding offset to~~distribution of a ~~valuation allowance.~~

~~The~~portion of the undistributed earnings of one of its China subsidiaries. However, the Company ~~does~~has not ~~provide~~provided for ~~U.S.~~withholding taxes on ~~its~~the remaining portion of the undistributed earnings of its China subsidiary nor for the undistributed earnings of its other foreign subsidiaries that it intends to ~~invest~~reinvest indefinitely outside the U.S.~~, unless such taxes are otherwise required under~~ The Company has also historically remitted earnings from its Singapore subsidiary to the U.S. ~~tax law. In 2016,~~and may do so again in the future. However, the Company determined that a portion of the current year earnings of one of its China subsidiaries may be remitted in the future to one of its foreign subsidiaries outside of mainland China and, accordingly, the Companyhas not provided for ~~the related~~ withholding taxes ~~in its Condensed Consolidated Financial Statements.~~on undistributed Singapore earnings as Singapore does not currently impose a withholding tax on dividends. If the Company changes its intent to reinvest its undistributed foreign earnings indefinitely or if a greater amount of undistributed earnings ~~are~~is needed than the previous anticipated remaining unremitted foreign earnings, the Company could be required to accrue or pay ~~U.S.~~foreign taxes on some or all of these undistributed earnings. As of ~~September 29, 2017,~~June 25, 2021, the Company had undistributed earnings of foreign subsidiaries that are considered indefinitely invested outside of the U.S. of approximately ~~$158.0~~$317.3 million. It is not practicable to determine the ~~income~~ tax liability that might be incurred if these earnings were to be distributed.

~~The~~As of June 25, 2021 and June 26, 2020, the Company’s gross liability for unrecognized tax benefits, ~~as of September 29, 2017 and September 23, 2016~~excluding interest, was ~~$0.3~~$1.3 million and ~~$0.4~~$1.0 million, respectively. Increases or decreases to interest and penalties on uncertain tax positions are included in the income tax provision in the Condensed Consolidated Statements of Operations.Although it is possible that some of the unrecognized tax benefits could be settled within the next twelve months, the Company cannot reasonably estimate the outcome at this time.

~~Basic~~On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (the CARES Act) was signed into law in response to the U.S. COVID-19 pandemic, which, among other things, suspends the 80.0% limitation on the deduction for NOLs in taxable years beginning before January 1, 2021, permits a 5-year carryback of NOLs arising in taxable years beginning after December 31, 2017 and before January 1, 2021, and generally caps thelimitation on thededuction for net interest expense at 50.0% of adjusted taxable income ~~per share excludes dilution~~for taxable years beginning in 2019 and ~~is computed by dividing net~~2020. In addition, the CARES Act raises the corporate charitable deduction limit to 25.0% of taxable income byand makes qualified improvement property generally eligible for 15-year cost-recovery and 100.0% bonus depreciation. The Company has evaluated the ~~weighted average number~~impact of ~~common shares outstanding~~the CARES Act and determined that there was 0 significant impact to the income tax provision for the ~~period. Diluted net income per share reflects the potential dilution that would occur if outstanding securities or other contracts to issue common stock were exercised or converted into common stock.~~three and six months ended June 25, 2021.

~~The following is a reconciliation~~On December 27, 2020, the U.S. government enacted the Consolidated Appropriations Act, 2021, which enhances and expands certain provisions of the ~~numerators and denominators used in computing basic and diluted net income per share (in thousands, except per share data):~~CARES Act. This legislative act is not expected to have a material impact on the Company’s consolidated financial results.

Three Months Ended

Nine Months Ended

September 29,

September 23,

September 29,

September 23,

2017

2016

2017

2016

Numerator:

Net income

$
19,716

$
2,614

$
54,236

$
98

Denominator:

Shares used in computation — basic:

Weighted average common shares
   outstanding

33,540

32,759

33,342

32,544

Shares used in computation — diluted:

Shares used in computing basic net income
   per share

33,540

32,759

33,342

32,544

Dilutive effect of common shares
   outstanding subject to repurchase

813

313

856

305

Dilutive effect of options outstanding

7

28

18

38

Weighted average shares used in computing
   diluted net income per share

34,360

33,100

34,216

32,887

Net income per share — basic

$
0.59

$
0.08

$
1.63

$
0.00

Net income per share — diluted

$
0.57

$
0.08

$
1.59

$
0.00

On March 11, 2021, the American Rescue Plan Act of 2021 (“American Rescue Plan”) was signed into law to provide additional relief in connection with the ongoing COVID-19 pandemic. The American Rescue Plan includes, among other things, provisions relating to Paycheck Protection Plan (“PPP”) loan expansion, defined pension contributions, excessive employee remuneration, and the repeal of the election to allocate interest expense on a worldwide basis. The Company does not currently expect that such provisions will have a material impact on the Company’s Condensed Consolidated Financial Statements.

In December 2019, the FASB issued Accounting Standards Update No. 2019-12, “Income Taxes (Topic 740) Simplifying the Accounting for Income Taxes”, as part of its initiative to reduce complexity in the accounting standards. The ASU eliminates certain exceptions from ASC 740 related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. ASU 2019-12 also clarifies and simplifies other aspects of the accounting for income taxes. The guidance is effective for fiscal years beginning after December 15, 2020 and for interim periods within those fiscal years. The Company adopted ASU 2019-12 on January 1, 2021. The adoption of this standard did not have a material impact on the Company’s Condensed Consolidated Financial Statements.

Cinos Korea has a noncontributory defined benefit pension plan covering substantially all of its employees upon their retirement. The benefits are based on expected years of service and average compensation. The net period costs are recognized as employees render the services necessary to earn the postretirement benefits. The Company records annual amounts relating to the pension plan based on calculations that incorporate various actuarial and other assumptions, including discount rates, mortality, assumed rates of return, compensation increases and turnover rates. The Company reviews its assumptions on an annual basis and makes modifications to the assumptions based on current and expected rates of return and trends when it is appropriate to do so. The effect of modifications to those assumptions is recorded in accumulated other comprehensive income and amortized to net periodic cost over future periods using the corridor method. The Company believes that the assumptions utilized in recording its obligations under the plan are reasonable based on its experience and market conditions.

As of June 25, 2021, the benefit obligation of the plan was $9.6 million and the fair value of the benefit plan assets, which are invested in several fixed deposit accounts with a bank, was $5.9 million. As of June 25, 2021, the unfunded balance of the plan of $3.7 million has been accrued for by the Company and is included in other long-term liabilities. Amounts recognized in accumulated other comprehensive income as of June 25, 2021 are $0.5 million. The contribution to the plan by the Company and its subsidiaries during the year ended June 25, 2021 was $26.0 thousand. The benefits expected to be paid from the pension plan in each year from 2021-2025 are $NaN, $0.9 million, $2.3 million, $1.0 million and $0.9 million, respectively. The aggregate benefits expected to be paid in the five years from 2026-2031 are $5.7 million.

The Company ~~had securities outstanding which could potentially dilute basic net income per share~~sponsors a 401(k) savings and retirement plan (the “401(k) Plan”) for all U.S. employees who meet certain eligibility requirements. Participants can elect to contribute to the 401(k) Plan, on a pre-tax basis, up to 25% of their salary to a maximum of the IRS limit. The Company matches 50.0% of participant salary up to 6.0% of employee contributions based upon eligibility. The Company made approximately $0.6 million and $1.2 million discretionary employer contributions to the 401(k) Plan in the future, but the incremental shares from the assumed exercise of these securities were excluded in the computation of diluted net income per share, as their effect would have been anti-dilutive. Such outstanding securities consisted of 174,202three and ~~187,389 options~~six months ended June 25, 2021 and $0.7 million and $1.3 million for the three and ~~nine month periods~~six months ended ~~September 23, 2016, respectively and none for the three and nine month periods ended September 29, 2017.~~ June 26, 2020, respectively.

The Company had commitments to various third parties to purchase ~~inventory~~inventories totaling approximately ~~$169.2~~$405.1 million ~~at September 29, 2017.~~as of June 25, 2021.

The Company leases properties domestically in Hayward, California, Austin, Texas, Chandler, Arizona and South San Francisco, California and internationally in China, Singapore, Philippines and the Czech Republic. The Company leases certain of its facilities under non-cancelable leases, which expire on various dates through 2023.

~~As of September 29, 2017, future minimum payments under these operating leases were as follows (in thousands):~~

From time to time, the Company is subject to various legal proceedings and claims, either asserted or unasserted, that arise in the ordinary course of business. Although the outcome of the various legal proceedings and claims individually or in the aggregate cannot be predicted with certainty, the Company has not had a history of outcomes to date that have been material to the ~~statement~~Condensed Consolidated Statements of ~~operations~~Operations and does not believe that any of these proceedings or other claims will have a material adverse effect on its consolidated financial condition, or results of ~~operations.~~operations or cash flows.

On April 13, 2021, the Company completed an underwritten public offering of 3,181,818 shares of the Company’s common stock, for which the Company received net proceeds of approximately $167.6 million, after deducting the underwriting discounts and offering expenses payable by the Company. On April 29, 2021, the Underwriters exercised the option to purchase an additional 477,272 shares of the Company’s common stock for approximately $25.2 million in cash.

QGT, through its wholly-owned subsidiary in Singapore,owns part of the outstanding shares of Cinos Korea, a South Korean company that provides outsourced cleaning and recycling of precision parts for the semiconductor industry through its operating facilities in South Korea and through its partial interest in Cinos China.

The carrying value of the remaining interest held by another shareholder in Cinos Korea and the remaining interest in Cinos China are presented as noncontrolling interests in the accompanying Condensed Consolidated Financial Statements. The fair values of the noncontrolling interests were estimated based on the values of Cinos Korea and Cinos China on a 100.0% basis. The values were calculated based on the pro-rata portion of total QGT earnings before interest expense, taxes, depreciation and amortization contributed by each entity.

The Company is obligated to purchase shares owned by a Cinos Korea shareholder. As of June 25, 2021, the fair value of the obligation is $14.0 million which has been recorded as a non-current liability in the accompanying consolidated balance sheets and represents a Level 3 measurement as discussed in Note 4 of the Company’s Notes to Condensed Consolidated Financial Statements.

On July 24, 2021, the Company entered into an amendment with the Cinos Korea shareholder to eliminate the obligation to purchase certain amount of the common stock owned by the shareholder. As a result, noncontrolling interest in Cinos Korea would increase by 35.0% beginning in the third quarter of fiscal 2021.

The Company grants stock awards in the form of restricted stock units (RSUs) and performance stock units (PSUs) to its employees as part of the Company’s long-term equity compensation plan. These stock awards are granted to employees with a unit purchase price of 0 dollars and typically vest over three years, subject to the employee’s continued service with the Company and, in the case of PSUs, subject to achieving certain performance goals. The Company also grants common stock to its board members in the form of restricted share awards (RSAs), which vest on the earlier of 1) the next Annual Shareholder Meeting, or 2) 365 days from date of grant.

Stock-based compensation expense includes compensation costs related to estimated fair values of awards granted. The estimated fair value of the Company’s equity-based awards, net of expected forfeitures, is amortized on a straight-line basis over the awards’ vesting period and is adjusted for subsequent changes in estimated forfeitures related to all equity-based awards and performance as it relates to PSUs.

The following table shows the Company’s stock-based compensation expense included in the Condensed Consolidated Statements of Operations:

For purposes of determining compensation expense related to these RSUs, the fair value is determined based on the closing market price of the Company’s common stock on the date of award.

There were 0.3 million RSUs granted during the quarter ended June 25, 2021, with a weighted average fair value of $49.86 per share. For the six months ended June 26, 2020, 0.4 million RSUs were granted with a weighted average fair value of $49.02 per share. For the six months ended June 26, 2020, 0.1 million vested shares were withheld to satisfy withholding tax obligations, resulting in the net issuance of 0.5 million shares.

As of June 25, 2021, approximately $26.0 million of stock-based compensation cost, net of estimated forfeitures, related to RSUs and PSUs remains to be amortized over a weighted average period of 1.7 years. As of June 25, 2021, a total of 1.4 million RSUs and PSUs remain outstanding with an aggregate intrinsic value of $75.6 million and a weighted average remaining contractual term of 1.3 year.

As of June 25, 2021, a total of 18,893 shares of RSAs were outstanding. The total unamortized expense of the Company’s unvested restricted stock awards as of June 25, 2021 was $0.8 million.

The following table summarizes the Company’s combined RSU, PSU and RSA activity for the six months ended June 26, 2020:

~~10. Geographical Information~~Revenue is recognized when control of the promised goods or services is transferred to the Company’s customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services.

The Company ~~operates in one operating and reportable segment as the nature of the Company’s~~sells its products and ~~production processes, as well as type of~~services primarily to customers ~~and distribution methods, is consistent among all of the Company’s products and is engaged~~ in ~~the development, manufacture and supply of critical subsystems for~~ the semiconductor capital equipment ~~consumer, medical, energy, industrial, flat panel and research industries.~~industry. The Company’s ~~foreign operations~~revenues are ~~conducted primarily through~~highly concentrated, and we are therefore highly dependent upon a small number of customers. Typical payment terms with our customers range from thirty to sixty days.

The Company’s Products division provides warranty on its ~~wholly-owned subsidiaries~~products for a period of up to two years and provides for warranty costs at the time of sale based on historical activity. Determination of the warranty reserve requires the Company to make estimates of product return rates and expected costs to repair or replace the products under warranty. If actual return rates and/or repair and replacement costs differ significantly from these estimates, adjustments to recognize additional cost of revenues may be required in ~~China, Singapore~~future periods. The warranty reserve is included in other current liabilities on the Condensed Consolidated Balance Sheets and is not considered significant.

The Company’s products are manufactured and services provided at facilities throughout the Americas, Asia Pacific and EMEA (“Europe and the ~~Czech Republic.~~ Middle East”). Sales to customers are initiated through a purchase order and are governed by our standard terms and conditions, written agreements, or both. Revenue is recognized when performance obligations under the terms of an agreement with a customer are satisfied; generally, this occurs with the transfer of control of the products or when the Company provides the services. Transfer of control occurs at a specific point-in-time. Based on the enforceable rights included in our agreements or prevailing terms and conditions, products produced by the Company without an alternative use are not protected by an enforceable right of payment that includes a reasonable profit throughout the duration of the agreement. Consignment sales are recognized in revenue at the earlier of the period that the goods are consumed or after a period of time subsequent to receipt by the customer as specified by terms of the agreement, provided control of the promised goods or services has transferred.

Revenue is measured as the amount of consideration we expect to receive in exchange for transferring Products or providing services. Sales, value-add, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue. Certain of our customers may receive cash-based incentives, such as rebates or credits, which are accounted for as variable consideration. We estimate these amounts based on the expected amount to be provided to customers and reduce revenues recognized. As of June 25, 2021 and December 25, 2020, an accrual for unpaid customer rebates of $5.7 million for both periods was included in accounts receivable on the Company’s Condensed Consolidated Balance Sheet. The Company's disaggregated revenues are by segments within the Company’s Condensed Consolidated Statement of Operations.

The Company’s principal markets include ~~North~~ America, Asia Pacific and ~~Europe. Sales~~EMEA. Revenues by geographic area ~~represent sales to unaffiliated customers and~~ are categorized based ~~upon~~on the customer’s location to which the products were ~~shipped.~~shipped or where the services were performed. The following table sets forth revenue by geographic area (in ~~thousands)~~millions):

	Three Months Ended				Nine Months Ended				Three Months Ended				Six Months Ended
	September 29,		September 23,		September 29,		September 23,		June 25,		June 26,		June 25,		June 26,
	2017		2016		2017		2016		2021		2020		2021		2020
United States	$	138,866	$	83,296	$	372,571	$	217,026	$	187.3	$	155.1	$	359.9	$	297.7
Singapore										182.5		119.6		335.8		231.8
South Korea										36.7		21.3		63.3		41.6
China		6,834		6,961		24,947		11,593		25.4		12.0		41.4		21.1
Singapore		73,427		39,310		207,477		115,353
Taiwan										23.1		15.0		43.3		30.2
Austria		6,132		7,994		25,844		25,805		20.6		13.0		39.3		27.5
Israel										5.4		4.2		9.4		7.9
Other		17,351		8,593		44,626		18,437		34.2		4.6		40.4		7.9
	$	242,610	$	146,154	$	675,465	$	388,214	$	515.2	$	344.8	$	932.8	$	665.7

The Company leases offices, facilities and equipment in locations throughout the Americas, Asia Pacific and EMEA.

The Company’s leases do not provide an implicit rate, thus the Company uses an estimated incremental borrowing rate in determining the present value of lease payments.

Future minimum payments under operating leases as of June 25, 2021 were summarized as follows:

The Company assumed $23.8 million of facility leases as part of the acquisition of Ham-Let. The Company also entered into two new lease agreements in fiscal year 2020 with commencement dates in fiscal year 2021. The total minimum lease payments for these two new lease agreements is $22.1 million, which was included in the total contractual obligations.

The following is a reconciliation of the numerators and denominators used in computing basic and diluted net income (loss) per share:

	Three Months Ended				Six Months Ended
	June 25,		June 26,		June 25,		June 26,
(In millions, except share amounts)	2021		2020		2021		2020
Numerator:
Net income attributable to UCT	$	17.1	$	21.3	$	42.1	$	30.7
Denominator:
Shares used in computation — basic:
Weighted average common shares outstanding		43.3		40.1		41.9		39.9
Shares used in computation — diluted:
Weighted average common shares outstanding		43.3		40.1		41.9		39.9
Dilutive effect of common shares outstanding subject to repurchase		1.0		0.7		1.0		0.9
Shares used in computing diluted net income per share		44.3		40.8		42.9		40.8
Net income per share attributable to UCT — basic	$	0.39	$	0.53	$	1.00	$	0.77
Net income per share attributable to UCT — diluted	$	0.39	$	0.52	$	0.98	$	0.75

The Company operates and reports financial results for 2 operating segments: Products and Services. These segments are organized primarily by the nature of the products and service they provide. The Company’s Chief Executive Officer (chief operating decision maker) views and evaluates operations based on the results of each of the reportable segments. The following table describes each segment:

The Company uses segment profit or loss as the primary measure of profitability to evaluate operating performance and to allocate capital resources. Segment profit or loss is defined as a segment’s income or loss from continuing operations before other income and income taxes included in the accompanying condensed consolidated statements of operations.

Any intercompany sales and associated profit (and any other intercompany items) are eliminated from segment results. There were no significant intercompany eliminations for the periods presented.

	Three Months Ended				Six Months Ended
	June 25,		June 26,		June 25,		June 26,
	2021		2020		2021		2020
Revenues:
Products	$	442.5	$	277.9	$	788.1	$	537.3
Services		72.7		66.9		144.7		128.4
Total segment revenues	$	515.2	$	344.8	$	932.8	$	665.7

Gross profit:
Products	$	74.6	$	48.6	$	136.6	$	93.3
Services		25.3		25.3		50.2		46.3
Total segment gross profit	$	99.9	$	73.9	$	186.8	$	139.6

Operating profit:
Products	$	24.0	$	24.3	$	58.2	$	44.6
Services		7.9		6.5		14.1		8.8
Consolidated income from operations	$	31.9	$	30.8	$	72.3	$	53.4

					June 25,		December 25,
					2021		2020
Assets
Products					$	1,597.1	$	868.4
Services						249.6		234.1
Total segment assets					$	1,846.7	$	1,102.5

As of June 25, 2021, approximately ~~$9.9~~$111.6 million and ~~$1.6~~$46.7 million of the Company’s net long-lived assets were located in Asia Pacific and EMEA, respectively, and the remaining balances were located in the United States. At December 25, 2020, approximately $90.4 million and $9.4 million of the Company’s net long-lived assets were located in Asia and the Czech Republic, respectively, and the remaining balances were located in the United States. At September 23, 2016, approximately $7.4 million and $1.8 million of the Company’s net long-lived assets were located in Asia and the Czech Republic,Europe, respectively, and the remaining balances were located in the United States.

You should read the following discussion of our financial condition and results of operations in conjunction with the ~~condensed consolidated financial statements~~Condensed Consolidated Financial Statements and the notes thereto included elsewhere in this Quarterly Report on Form 10-Q and in our Annual Report on Form 10-K filed with the SEC on ~~March 15, 2017.~~February 23, 2021. This Quarterly Report on Form 10-Q contains “forward-looking statements” that involve substantial risks and uncertainties. The statements contained in this Quarterly Report on Form 10-Q that are not purely historical are forward-looking statements within the meaning of Section 27A of the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, including, but not limited to, statements regarding our expectations, beliefs, intentions, strategies, future operations, future financial position, future revenue, projected expenses, gross margins and plans and objectives of management. In some cases, you can identify forward-looking statements by terms such as “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “might,” “plan,” “project,” “will,” “would,” “should,” “could,” “can,” “predict,” “potential,” “continue,” “objective,” or the negative of these terms, and similar expressions intended to identify forward-looking statements. However, not all forward-looking statements contain these identifying words. These forward-looking statements reflect our current views about future events and involve known risks, uncertainties and other factors that may cause our actual results, performance or achievement to be materially different from those expressed or implied by the forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those identified below, and those discussed in the section titled “Risk Factors” included in this Quarterly Report on Form 10-Q and in our Annual Report on Form 10-K filed with the SEC on ~~March 15, 2017.~~February 23, 2021, as updated in our Current Report on Form 8-K filed with the SEC on April 5, 2021. Furthermore, such forward-looking statements speak only as of the date of this report. Except as required by law, we undertake no obligation to update any forward-looking statements to reflect events or circumstances after the date of such statements.

Ultra Clean Holdings, Inc., (“UCT”, the “Company” or “We”) is a leading developer and supplier of critical subsystems, components and parts, and ultra-high purity cleaning and analytical services primarily for the semiconductor industry. UCT offers its customers an integrated outsourced solution for major subassemblies, improved design-to-delivery cycle times, design for manufacturability, prototyping and part and component manufacturing, as well as tool chamber parts cleaning and coating, and micro-contamination analytical services. We ~~are a global leader in the design, engineering,~~operate and ~~manufacture of~~report results for two operating segments: Products and Services (formerly known as “SPS” and “SSB”, respectively). Our Products business primarily designs, engineers and manufactures production tools, components and parts, and modules and subsystems for the semiconductor and display capital equipment markets. Products include chemical delivery modules, frame assemblies, gas delivery systems, fluid delivery systems, precision robotics, process modules as well as other high-level assemblies. Our Services business provides ultra-high purity parts cleaning, process tool part recoating, surface encapsulation and high sensitivity micro contamination analysis primarily for the semiconductor device makers and wafer fabrication equipment industry segments with similar requirements including flat panel display, consumer, and medical. We provide our customers specialized engineering and manufacturing solutions for these highly complex, highly configurable, limited volume applications. In addition, we routinely handle major volume and design changes during the manufacturing process and provide equipment manufacturers flexibility when responding to dynamic market changes. We enable them to realize lower manufacturing costs and reduced design-to-delivery cycle times while maintaining high quality standards.(WFE) markets.

We provide our customers with complete solutions that combine our expertise in design, assembly, test and component characterization. Our customers value our highly flexible global manufacturing operations, our excellence in quality control and our scale and financial stability. Our global footprint helps us drive down total manufacturing costs, and reduce design-to-delivery cycle times while maintaining high quality standards for our customers. We believe these characteristics provide global solutions for our customers’ product demands.

~~We ship~~sell a majority of our products and provide most of our services to U.S. registered customers with locations both in and outside the U.S. In addition to U.S. manufacturing and service operations, we manufacture products and provide parts cleaning and other related services in our Asian and European facilities to support local and U.S. based customers. We conduct our operating activities primarily through our ~~wholly owned subsidiaries, Ultra Clean Technology Systems~~subsidiaries.

Over the long-term, we believe the semiconductor market we serve will continue to grow due to multi-year industry demand from a broad range of drivers including mobile demand driven by 5G, new CPU architectures which are enabling higher performance servers, and ~~Service, Inc.~~cloud, AI and Machine Learning. We also believe that semiconductor original equipment manufacturers (“OEM”) are increasingly relying on partners like UCT to fulfill their expanding capacity requirements. Additionally, our Services division is benefiting as device manufacturers rely on precision cleaning, coating and analytics to advance ever more complex devices.

On March 31, 2021, we completed the acquisition of Ham-Let (Israel-Canada) Ltd. (“Ham-Let”), ~~AIT, Ultra Clean Micro-Electronics Equipment (Shanghai) Co.~~a public company organized under the laws of the State of Israel (not a U.S. registrant), ~~Ltd.~~pursuant to an Agreement and Plan of Merger (the “Merger Agreement”), ~~Ultra Clean Asia Pacific, Pte, Ltd., Marchi~~for approximately $362.9 million, which included $273.5 million of equity value plus $91.3 million of net debt offset by the settlement of existing relationship of $1.9 million. Ham-Let engages in the development, manufacturing and ~~Miconex.~~ marketing of innovative control valves, fittings, and hoses for the control and monitoring of industrial systems in a variety of markets, including the Semiconductor market. These products are primarily used in ultra clean gas transportation systems for the transmission of liquids and gases. The Company’s primary reason for this acquisition was to broaden UCT’s relevance to the semiconductor equipment market and to provide access to a new set of customers in the semiconductor fab infrastructure market.

On April 13, 2021, we completed an underwritten public offering of 3,181,818 shares of our common stock, in which we received net proceeds of approximately $167.6 million, after deducting the underwriting discounts and offering expenses. On April 29, 2021, the Underwriters exercised the option to purchase an additional 477,272 shares of our common stock for approximately $25.2 million in cash. We intend to use the net proceeds from this offering for general corporate purposes, which may include working capital, sales and marketing activities, product development, general and administrative matters, and capital expenditures. We may use a portion of the net proceeds to acquire complementary businesses, products, services, or technologies, although we have no agreements, commitments, or plans for any specific acquisitions at this time.

Our Condensed Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States, which require us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses and related disclosure at the date of our Condensed Consolidated Financial Statements. On an on-going basis, we evaluate our estimates and judgments, including those related to inventories, income taxes, business combinations and goodwill, intangible assets and long-lived assets. We base our estimates and judgments on historical experience and on various other factors that we believe to be reasonable under the circumstances, the results of which form the basis of our judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. We consider certain accounting policies related to inventory valuation, accounting for income taxes, business combinations, valuation of goodwill, intangible assets and long-lived assets to be critical policies due to the estimates and judgments involved in each.

There have been no significant changes to our critical accounting policies, significant judgments and estimates disclosed in our Annual Report on Form 10-K subsequent to December 25, 2020. For further information on our critical and other significant accounting policies and estimates, see Part II, Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our Annual Report on Form 10-K for the fiscal year ended December 25, 2020, as filed with the SEC.

Our fiscal year is the 52- or 53-week period ending on the Friday nearest December 31. Fiscal year 2021 is the 53-week period ending December 31, 2021, and fiscal year 2020 was the 52-week period ended December 25, 2020. The fiscal quarters ended June 25, 2021 and June 26, 2020 were both 13-week periods.

Discussion of Results of Operations for the Three and Six months ended June 25, 2021 Compared to the Three and Six months ended June 26, 2020

The ~~capital equipment market continued to show strength during the third quarter~~results of 2017, primarily from multiple technological advances driving the semiconductor industry. We have expanded and continue to expand our capabilities to enable the manufacturing of additional major modules and further increase our critical content on our customers’ platforms.

~~Sales~~operations for the three months ended September 29, 2017 were $242.6 million, an increase of $96.4 million, or 66.0%, from the comparable quarter of 2016. Semiconductor revenue increased $92.9 million, or 71.8%, from the comparable quarter of 2016. Gross profit for the three months ended September 29, 2017 increased $19.2 million to $42.7 million, or 17.6% of sales, from $23.5 million, or 16.1% of sales, for the three months ended September 23, 2016. Total operating expenses for the three months ended September 29, 2017, were $19.4 million, or 8.0% of sales, compared to $16.8 million, or 11.5% of sales, for the three months ended September 23, 2016. We had net income of $19.7 million for the three months ended September 29, 2017, compared to net income of $2.6 million for the three months ended September 23, 2016.

Sales for the nine months ended September 29, 2017, were $675.5 million, an increase of $287.3 million, or 74.0% from the comparable period of 2016. Gross profit for the nine months ended September 29, 2017 increased $66.5 million to $123.6 million, or 18.3% of sales, from $57.1 million, or 14.7% of sales, during the comparable period of 2016. Total operating expenses for the nine months ended September 29, 2017, were $56.1 million, or 8.3% of sales, compared to $47.4 million, or 12.2% of sales, for the nine

months ended September 23, 2016. We had a net income of $54.2 million for the nine months ended September 29, 2017 as compared to net income of $0.1 million for the nine months ended September 23, 2016.

~~We had significant sales to two customers~~Company for the three and ~~nine~~six months ended ~~September 29, 2017 and September 23, 2016,~~June 25, 2021 include operating activities for ~~which each customer accounted for 10% or more~~Ham-Let since its acquisition date of ~~total sales. Their related sales as a percentage of total sales were as follows:~~March 31, 2021.

For the periods indicated, the following table sets forth certain costs and expenses and other income items as a percentage of sales. The table and subsequent discussion should be read in conjunction with our Condensed Consolidated Financial Statements and Notes thereto included elsewhere in our quarterly report.

Three Months Ended

Nine Months Ended

September 29,

September 23,

September 29,

September 23,

2017

2016

2017

2016

Sales

100.0

%

100.0

%

100.0

%

100.0

%
Cost of goods sold

82.4

%

83.9

%

81.7

%

85.3

%
Gross profit

17.6

%

16.1

%

18.3

%

14.7

%
Operating expenses:

Research and development

1.1

%

1.7

%

1.2

%

1.8

%
Sales and marketing

1.5

%

1.9

%

1.5

%

2.2

%
General and administrative

5.4

%

7.9

%

5.6

%

8.2

%
Total operating expenses

8.0

%

11.5

%

8.3

%

12.2

%
Income (loss) from operations

9.6

%

4.6

%

10.0

%

2.5

%
Interest and other income (expense), net

0.0

%

(0.9
)
%

(0.3
)
%

(0.8
)
%
Income before provision for income taxes

9.6

%

3.7

%

9.7

%

1.7

%
Income tax provision

1.5

%

1.9

%

1.6

%

1.6

%
Net income (loss)

8.1

%

$
1.8

%

8.1

%

0.1

%

	Three Months Ended									Six Months Ended
Revenues by Segment	June 25,			June 26,			Percent			June 25,			June 26,			Percent
(Dollars in millions)	2021			2020			Change			2021			2020			Change
Products	$	442.5		$	277.9			59.2	%	$	788.1		$	537.3			46.7	%
Services		72.7			66.9			8.7	%		144.7			128.4			12.7	%
Total Revenues	$	515.2		$	344.8			49.4	%	$	932.8		$	665.7			40.1	%
Products as a percentage of total revenues		85.9	%		80.6	%					84.5	%		80.7	%
Services as a percentage of total revenues		14.1	%		19.4	%					15.5	%		19.3	%

~~Sales for~~Total Products revenues increased in the three and six months ended September 29, 2017 were $242.6 million, an increase of $96.4 million, or 66.0%, from $146.2 million in the comparable quarter of 2016. The increase in overall sales in the third quarter of 2017 compared to the third quarter of 2016 is due to an increase in the volume of products shipped which is the result of higher demand from our existing semiconductor customers. Overall, the semiconductor industry has been trending upward since the second quarter of 2016. On a geographic basis, sales in the U.S. increased $37.1 million to $110.6 million, or 45.6% of sales, for the three months ended September 29, 2017 compared to $73.5 million, or 50.3% of sales, for the comparable period of 2016. Foreign sales increased $59.3 million to $132.0 million, or 54.4% of sales, for the three months ended September 29, 2017 compared to $72.7 million, or 49.7% of sales, for the comparable period of 2016.

Sales for the nine months ended September 29, 2017, were $675.5 million, an increase of $287.3 million, or 74.0%, from $388.2 million in the comparable period of 2016. The increase in sales for the nine months ended September 29, 2017, which includes increases of $271.3 million and $16.0 million in semiconductor and non-semiconductor industries, respectively, was due to an increase in the volume of products shipped as a result of continued semiconductor demand from our major customers. Sales in the U.S. for the nine months ended September 29, 2017 increased by $111.3 million to $319.1 million while foreign sales increased by $176.0 million to $356.4 million when compared to the same period in prior year.

~~We expect sales to be relatively flat in the fourth quarter of fiscal 2017 as compared to the third quarter of 2017.~~

~~Cost of goods sold consists primarily of purchased materials, labor and overhead, including depreciation related to certain capital assets associated with the design and manufacture of products sold.~~

Gross profit for the three months ended September 29, 2017 increased $19.2 million to $42.7 million, or 17.6% of sales, from $23.5 million, or 16.1% of sales, for the three months ended September 23, 2016. The increases in gross profit and gross margin in the third quarter of 2017 compared to the same period in 2016 was due primarily to higher volume of products shipped, increased factory utilization and increased labor efficiency. We expect gross profit to be relatively flat in the fourth quarter of fiscal 2017 as compared to the third quarter of 2017.

Gross profit for the nine months ended September 29, 2017, increased by $66.5 million to $123.6 million, or 18.3% of sales, from $57.1 million, or 14.7% of sales, for the nine months ended September 23, 2016. The increase in gross profit and gross margin when comparing the nine months ended September 29, 2017 with the same period in 2016 is primarily due to higher volume of products shippedJune 25, 2021, compared to the same period in the prior year, ~~increased factory utilization and increased labor efficiency.~~

Research and development expense consists primarily of activities related to new component testing and evaluation, test equipment and fixture development, product design, and other product development activities. Research and development expense for the three months ended September 29, 2017 increased $0.3 million, or 11.2%, to $2.7 million, or 1.1% of sales, compared to $2.4 million, or 1.7% of sales in the comparable period in 2016.

~~Research and development expense for the~~ ~~nine months ended September 29, 2017~~ ~~increased by $1.3 million, or 18.6%, to $8.4 million, or 1.2% of sales, compared to $7.1 million, or 1.8% of sales in the comparable period in 2016.~~

The increase in research and development expense when comparing the three and nine months ended September 29, 2017 with the comparable periods in 2016 was due to an increase in non-production related engineering work and an increase in employee incentive compensation related expenses as a result of higher operating income.

Sales and marketing expense consists primarily of salaries and commissions paid to our sales and service employees, salaries paid to our engineers who work with the sales and service employees to help determine the components and configuration requirements for new products and other costs related to the sales of our products. Sales and marketing expense for the three months ended September 29, 2017 increased $0.8 million, or 29.9%, to $3.6 million, or 1.5% of sales, compared to $2.8 million, or 1.9% of sales, in the comparable period of 2016.

~~Sales and marketing expense for the~~ ~~nine months ended September 29, 2017~~ ~~increased by $1.6 million, or 17.9%, to $10.1 million, or 1.5% of sales, compared to $8.5 million, or 2.2% of sales in the comparable period in 2016.~~

~~The increase in sales and marketing expense when comparing the three and~~ ~~nine months ended September 29, 2017~~ ~~with the comparable periods in 2016 was~~ primarily due to an increase in ~~employee incentive compensation related expense as a result of higher operating income.~~

Our general and administrative expense has historically consisted primarily of salaries and overhead associated with our administrative staff, professional fees and amortization of our intangible assets. General and administrative expense increased $1.6 million, or 13.2%, for the three months ended September 29, 2017, to $13.1 million, or 5.4% of sales, compared with $11.5 million, or 7.9% of sales,customer demand in the ~~comparable period~~semiconductor industry, in particular, the wafer fabrication equipment industry and in part due to the inclusion of ~~2016.~~

~~General and administrative expense~~Ham-Let. Total Services revenues increased ~~approximately $6.0 million, or 18.6%, for the~~ ~~nine months ended September 29, 2017, to $37.7 million, or 5.6% of sales, compared with $31.7 million, or 8.2% of sales,~~ in ~~the comparable period of 2016.~~

~~The increase in general and administrative expenses when comparing~~ the three and ~~nine~~six months ended ~~September 29, 2017~~ with the comparable periods in 2016 was primarily due to an increase in outside services resulting from the non-capitalizeable implementation costs of our new enterprise reporting system, higher employee incentive compensation related expenses as a result of higher operating income and an increase related to our year-end audit fees.

Interest and other income (expense), net, for the three and nine months ended September 29, 2017, was $(19) thousand and ($2.1) million, respectively, compared to $(1.3) million and ($3.3) million, respectively, in the comparable periods of 2016. ~~The decrease in net expense of $1.3 million and $1.2 million for the three and nine months ended September 29, 2017, respectively, when~~June 25, 2021, compared to the same period in the prior year, isprimarily due to increases in demand across our customer base.

On a geographic basis, revenues represent products shipped from or services performed at our U.S. and international locations. For the three and six months ended June 25, 2021, both U.S. and international revenues increased due to an overall global increase in semiconductor capital equipment and general industry demand.

Research and development expenses increased 2.3 million and $3.1 million in the three and six months ended June 25, 2021 compared to the same periods in the prior year, primarily due to the ~~decrease~~ inclusion of Ham-Let’s research and development activities in the second quarter of 2021 and to an increase in personnel-related expenses associated with an increase in headcount.

Sales and marketing expenses increased $6.8 million in the three months ended June 25, 2021 compared to the same period in the prior year primarily due to the inclusion of Ham-Let’s sales and marketing activities in the second quarter of 2021 and an increase of $1.0 million in personnel-related expenses in the Products business. Sales and marketing expenses increased $8.6 million in the six months ended June 25, 2021 with the comparable period in the prior year due to the inclusion of Ham-Let’s sales and marketing activities in the second quarter of 2021 and an increase of $2.3 million in personnel-related expenses driven by higher headcount and bonuses.

General and administrative expensesincreased $15.8 million in the three months ended June 25, 2021, compared to the same period in the prior year, due to $8.1 million of costs related to the acquisition of Ham-Let and to the inclusion of Ham-Let’s general and administrative activities in the second quarter of 2021. General and administrative expensesincreased $16.6 million in the six months ended June 25, 2021, compared to the same period in the prior year, due to $9.4 million of expenses related to the acquisition of Ham-Let and the inclusion of Ham-Let’s general and administrative activities in the second quarter of 2021.

Interest expense increased in the three and six months ended June 25, 2021, compared to the same periods in the prior year, due to a higher average debt balance offset partially by lower interest rates resulting from lower LIBOR rates.

Other income (expense), net increased $1.3 million in the three months ended June 25, 2021, compared to the same period in the prior year, due to increases in the fair value of the ~~contingent earn-out liability incurred~~common stock purchase obligation and foreign exchange losses of $0.4 million and $0.3 million, respectively, and due to a decrease of $0.6 million in ~~conjunction with~~grants income.

Other income (expense), net increased $2.9 million in the ~~acquisition of Miconex. See Note 4~~six months ended June 25, 2021, compared to the ~~Company’s Condensed Consolidated Financial Statements~~same period in the prior year, due to an increase of $11.6 million in the fair value of forward hedge contracts related to the non-U.S. dollar-denominated acquisition price of Ham-Let, a $0.8 million increase in foreign exchange losses and a decrease of $0.6 million in government grants income. These increases were partially offset by insurance proceeds of $7.3 million received for ~~further discussion~~the reimbursement of our losses in the Cinos Korea fire and by the absence of $3.0 million loss from the change in fair value of contingent the earn-out ~~liability.~~in fiscal 2021.

Our tax expense and effective tax rates for the three months ended September 29, 2017 and September 23, 2016 were $3.5 million and 15.2%, and $2.8 million and 51.3%, respectively. Our tax expense and effective tax rate for the nine months ended September 29, 2017 and September 23, 2016 was $11.1 million and 17.0%, and $6.4 million and 98.5%, respectively. The change in respective rates reflects, primarily, changes in the geographic mix of worldwide earnings and financial results ~~including~~in jurisdictions which are taxed at different rates and the impact of ~~income and~~ losses in jurisdictions with full federal and state valuation allowances.

Company management continuously evaluates the need for a valuation allowance on its deferred tax assets and, as of ~~September 29, 2017,~~June 25, 2021, concluded that a full valuation allowance on its federal and state ~~and one of its Singapore subsidiaries was still~~deferred tax assets remained appropriate.

We have required capital ~~requirements~~ to fund our working capital needs, satisfy our debt obligations, maintain our equipment, ~~and~~ purchase new capital ~~equipment.~~equipment and make strategic acquisitions from time to time. As of ~~September 29, 2017,~~June 25, 2021, we had cash of ~~$65.9~~$451.4 million compared to ~~$52.5~~$200.3 million as of December ~~30, 2016.~~25, 2020. Our cash and cash equivalents, cash generated from operations, and amounts available under our revolving line of credit described below were our principal ~~source~~sources of liquidity as of ~~September 29, 2017.~~June 25, 2021.

For the nine months ended September 29, 2017, total cash provided by operating activities was $37.6 million compared to cash provided by operating activities of $9.4 million for the comparable period of 2016. Operating cash flows in the nine months ended September 29, 2017 included $12.6 million of non-cash activity comprised of depreciation, amortization of intangibles, stock compensation expense, amortization of debt issuance costs and a change in fair value of the contingent earn out payable to the former owners of Miconex. Cash generated from operating activities included increases in accounts payable of $57.7 million, accrued compensation and related benefits of $4.5 million, income taxes payable of $4.6 million and other liabilities of $2.0 million. These increases in cash flow were offset by increases in accounts receivable, inventories and other assets of $32.4 million, $60.5 million and $5.1 million, respectively, and were driven primarily from our increase in revenues and related inventory purchases to drive our revenue growth during 2017. Our cash flows from operations in any given period are largely driven by the timing of sales, the collection of accounts receivable and the payment of accounts payable.

Operating cash flows in the nine months ended September 23, 2016 included $14.9 million of non-cash activity comprised of depreciation, amortization of intangibles, stock compensation expense, amortization of debt issuance costs and a change in fair value of the contingent earn out payable to the former owners of Miconex. Cash generated from operating activities included decreases in deferred income taxes and prepaid expenses and other of $1.3 million and $1.2 million, respectively, and increases in accounts payable of $12.3 million, accrued compensation and related benefits of $0.4 million, income taxes payable of $0.5 million and other liabilities of $1.4 million. These increases in cash flow were offset by increases in accounts receivable and inventory of $6.6 million and $16.2 million, respectively.

Net cash used in investing activities for the nine months ended September 29, 2017 was approximately $12.5 million, attributable to the expansion of our Singapore and Arizona facilities and to the costs related to the development of the Company’s new enterprise reporting system. Net cash used in investing activities for the nine months ended September 23, 2016 was approximately $5.4 million, attributable to the expansion of our Czech Republic and Texas facilities and to the costs related to the development of the Company’s new enterprise reporting system.

Net cash used in financing activities for the nine months ended September 29, 2017 was due primarily to principal payments on bank borrowings of $19.2 million offset by bank borrowing proceeds of $8.2 million. For the nine months ended September 23, 2016, our net cash used in financing activities was due primarily to principal payments on borrowings of $11.0 million offset by bank borrowing proceeds of $4.5 million.

We anticipate that our existing cash and cash equivalents balance and operating cash flow will be sufficient to service our indebtedness and meet our working capital requirements and technology development projects for at least the next twelve months. The adequacy of these resources to meet our liquidity needs beyond that period will depend on our growth, the size and ~~profitability,~~number of any acquisitions, the state of the ~~global~~worldwide economy, our ability to meet our financial covenants ~~under~~with our credit facility, the cyclical expansion or contraction of the semiconductor capital equipment industry and the other industries we ~~serve. As of September 29, 2017, approximately $61.2 million of non-U.S. cash~~serve and ~~cash equivalents held by foreign subsidiaries may be subject~~capital expenditures required to ~~U.S. taxes if repatriated~~meet possible increased demand for ~~U.S. operations. Our intent is to reinvest all of these funds outside of the U.S.~~our products.

~~We may need to raise additional funds through equity or debt financings in~~In order to expand our business or acquire additional complementary businesses or technologies, we may need to raise additional funds through equity or ~~for other reasons, including working capital requirements.~~debt financings. If required, additional financing may not be available on terms that are favorable to us, if at all. If we raise additional funds through the issuance of equity or convertible debt securities, our stockholders’ equity interest will be diluted and these securities might have rights, preferences and privileges senior to those of our current stockholders. We may also require the consent of our new lenders to raise additional funds through equity or debt financings. No assurance can be given that additional financing will be available or that, if available, such financing can be obtained on terms favorable to our stockholders and us.

In prior years, we determined that a portion of the current year and future year earnings of one of our China subsidiaries may be remitted in the future to one of our foreign subsidiaries outside of China and, accordingly, we provided for the related withholding taxes in our Condensed Consolidated Financial Statements. As of June 25, 2021, we had undistributed earnings of foreign subsidiaries that are indefinitely invested outside of the U.S. of approximately $317.3 million. As of June 25, 2021, we have cash of approximately $269.0 million in our foreign subsidiaries.

In August 2018, we entered into a credit ~~facilities in the U.S.~~agreement with Barclays Bank that provided a Term Loan, a Revolving Credit Facility, and ~~Czech Republic that expire on February 2, 2019 and March 31, 2020, respectively.~~a Letter of Credit Facility (the “Credit Facility”). We and ~~certain~~some of our subsidiaries have agreed to secure all of ~~our and~~ their ~~respective~~ obligations under ~~a credit agreement (the “Credit Agreement”)~~the Credit Facility by granting a first priority lien in substantially all of our ~~and their~~ respective personal property assets (subject to certain exceptions and limitations).

~~As of September 29, 2017,~~ In August 2018, we ~~have outstanding amounts~~borrowed $350.0 million under the ~~U.S.~~ Term Loan and ~~Revolving~~used the proceeds, together with cash on hand, to finance the acquisition of QGT and to refinance our previous credit facilities.

On March 31, 2021, we entered into the Second Amendment (the “Second Amendment”) to the Credit Facility to, among other things, (i) refinance and reprice its approximately $272.8 million of existing term B borrowings that will remain outstanding (the “Repricing”) and (ii) obtain a $355.0 million senior secured incremental term loan B facility (the “Incremental Term Loan”) with Barclays Bank, which increased the amount of ~~$13.3~~term loan indebtedness outstanding under the Credit Facility.

The Term Loan has a maturity date of August 27, 2025, with monthly interest payments in arrears, quarterly principal payments of 0.625% of the outstanding principal balance thereof as of March 31, 2021, with the remaining principal paid upon maturity. Under the Credit Agreement, the we may elect that the term loans bear interest at a rate per annum equal to either (a) “ABR” (as defined in the Credit Agreement), plus the applicable margin or (b) the “Eurodollar Rate” (as defined in the Credit Agreement), based on LIBOR, plus the applicable margin. The applicable margin for the term loans under the Credit Agreement is equal to a rate per annum equal to either (i) at any time that our corporate family rating is Ba3 (with a stable outlook) or higher from Moody’s and BB- (with a stable outlook) or higher from S&P, (x) 3.50% for such Eurodollar term loans and (y) 2.50% for such ABR term loans or (ii) at all other times, (x) 3.75% for such Eurodollar term loans and (y) 2.75% for such ABR term loans. Interest on the term loans is payable on (1) in the case of such ABR term loans the last day of each calendar quarter and (2) in the case of such Eurodollar term loans, the last day of each relevant interest period and, in the case of any interest period longer than three months, on each successive date three months after the first day of such interest period. On March 29, 2021, we elected that the term loans outstanding as of March 31, 2021 accrue interest based on the “Eurodollar Rate” for an initial interest period of one month. As of March 31, 2021, the applicable margin with respect to the term loan facility was 3.75%. Pursuant to the Second Amendment to the Credit Agreement made effective on March 31, 2021, the Credit Agreement contains customary LIBOR replacement provisions in the event LIBOR is discontinued. At June 25, 2021, we had an outstanding amount under the Term Loan of $598.9 million, ~~and $39.9 million, respectively, which are~~ gross of unamortized debt issuance costs of ~~$0.2 million. The aggregate principal amount of the Revolving Credit facility is $40.0~~$15.3 million. As of ~~September 29, 2017,~~June 25, 2021, the interest ~~rates~~rate on the outstanding ~~U.S.~~ Term Loan ~~and~~was 3.84%. On December 31, 2021, LIBOR will officially be phased out. The Company will work with its bank to determine alternative risk-free rates.

The Revolving Credit ~~facility were 3.99%~~Facility has an initial available commitment of $65.0 million and ~~4.25%, respectively.~~

~~In order~~a maturity date of August 27, 2023. We pay a quarterly commitment fee in arrears equal to ~~manage interest rate risk on the variable component~~0.25% of the ~~Term Loan~~average daily available commitment outstanding.

The Credit Agreement requires that we entered into an interest rate swap with the Lenders in September 2015 with a total notional amount of $20.0 million (which amount decreases based on prorated quarterly principal payment over the remaining period of the Term Loan) pursuant to which we pay the counterparty a fixed rate of 0.99% and receive interest at a variable rate equal to the LIBOR rate we are required to pay under our Term Loan, or 1.24%, as of September 29, 2017. This interest rate swap effectively locked in a fixed interest rate of 3.74% on $9.3 million of the $13.3 million term loan balance outstanding as of September 29, 2017.

~~We are required to~~ maintain certain financial covenants ~~with our U.S. Credit facility~~ including a consolidated fixed charge coverage ratio (as defined in the Credit Agreement) as of the last day of any fiscal quarter of at least 1.25 to 1.00, and a consolidated leverage ratio (as defined in the New Credit Agreement) as of the last day of any fiscal quarter of no greater than ~~3.5~~3.75 to ~~1.00 and a minimum cash balance of $35.0 million at the end of each quarter.~~1.00. We were in compliance with all covenants for the quarter ended ~~September 29, 2017.~~June 25, 2021.

The Letter of Credit ~~Agreement also contains provisions requiring the following mandatory prepayments~~Facility has an initial available commitment of $50.0 million and a maturity date of August 27, 2023. We pay quarterly in arrears a fee equal to 2.5% (subject to certain ~~exceptions~~adjustments as per the Term Loans) of the dollar equivalent of all outstanding letters of credit, and ~~limitations): annual prepayments in an amount~~a fronting fee equal to ~~(a) 33%~~0.125% of ~~excess cash flow (as defined in~~ the ~~Credit Agreement) if the aggregate outstanding principal~~undrawn and unexpired amount of each letter of credit. As of June 25, 2021, we had $2.4 million of outstanding letters of credit with beneficiaries such as landlords of certain facility leases and government agencies making up the ~~Term Loan equals or exceeds $20.0 million and (b) 25% of excess cash flow if the aggregate outstanding principal amount~~majority of the ~~Term Loan equals or exceeds $10.0~~outstanding balance. The remaining available commitments are $47.6 million ~~but is less than $20.0 million. The~~on the Letter of Credit Facility and $65.0 million on the Revolving Credit Facility.

In 2020, Cinos China amended its existing Credit Agreement ~~also restricts us~~and entered into two additional Credit Agreements with a local bank that provide Revolving Credit Facilities for a total available commitment of $3.5 million with various maturity dates through September 23, 2022 and interest rates ranging from ~~declaring or paying any cash dividends.~~2.0% to 4.1%. As of June 25, 2021, Cinos China had outstanding debt of $2.7 million with an average interest rate of 3.1% under these Credit Agreements.

~~In conjunction~~Cinos Korea has a Credit Agreement that provides a Revolving Credit Facility for a total available commitment of 0.6 billion Korean Won (approximately $0.5 million) with ~~our acquisition~~annual renewals beginning June 2022 with an interest rate of ~~Miconex in July 2015, we have~~2.9%. During the six months ended June 26, 2020, borrowings under the Revolving Credit Facility were insignificant and no debt was outstanding as of June 25, 2021.

UCT Fluid Delivery Solutions s.r.o. has a ~~separate~~ credit agreement with a local bank in the Czech Republic that provides for a ~~term loan in the aggregate of 0.8 million euros and a~~ revolving credit facility in the aggregate of up to ~~8.3~~6.0 million euros. The credit agreement requires Miconex to maintain certain financial covenants, including a debt-to-earnings-before-interest-depreciation-and-amortization ratio no greater than 3.00 to 1.00 and an equity ratio of at least 15%. As of ~~September 29, 2017, Miconex~~June 25, 2021, no debt was ~~in compliance~~outstanding under this revolving credit facility.

Ham-Let has credit facilities and other loan agreements with ~~all of its covenants.~~

As of ~~September 29, 2017,~~June 25, 2021, our total bank debt was ~~$57.3~~$594.7 million, net of unamortized debt issuance costs of $15.3 million. As of June 25, 2021, we had unused revolving credit facilities of $65.0 million, $9.8 million and ~~we have $0.1~~$0.8 million ~~and 4.9 million euros (approximately $5.8 million) available to borrow on our revolving loans~~ in the ~~U.S. and~~United States, Czech Republic and China, respectively.

The fair value of our long-term debt was based on Level 2 inputs, and fair value was determined using quoted prices for similar liabilities in inactive markets. The carrying value of our long-term debt approximates fair value.

Capital expenditures were ~~$13.9~~$22.8 million during the ~~nine~~six months ended ~~September 29, 2017~~June 26, 2020 and were primarily attributable to the ~~expansion~~capital invested in our manufacturing facilities in the United States, China and South Korea as well as costs associated with the ongoing design and implementation of our ~~Singapore and Arizona facilities and to the costs related to the development of the Company’s~~ new enterprise ~~reporting~~resource planning system. The Company’s anticipated capital expenditures for the remainder of ~~2017~~2021 are expected to be financed primarily ~~through~~from our cash flow generated from operations.

During the periods presented, we ~~did~~do not have ~~any relations with~~ unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities, which would have been established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes.

In conjunction with the sale of our products in the ordinary course of business, we provide standard indemnification against certain liabilities to our customers, which may include claims of losses by their own customers resulting out of property damages, bodily injuries or deaths, or infringement of intellectual property rights by our products. Our potential liability arising out of intellectual property infringement claims by any third party is generally uncapped. As of June 25, 2021, we have not incurred any significant costs to defend lawsuits or settle claims related to these indemnification arrangements. As a result, we believe the estimated fair value of these arrangements is minimal.

Other than operating leases for certain equipment and real estate and purchase order commitments primarily for inventory, we have no off-balance sheet transactions ~~unconditional purchase obligations~~ or similar instruments and, other than the arrangements described under “Borrowing Arrangements” above and our common stock purchase obligations resulting from the acquisition of QGT, are not a guarantor of any other entities’ debt or other financial obligations. The following table summarizes our future minimum lease payments, principal payments under debt obligations and our purchase obligations for the purchase of inventory as of ~~September 29, 2017 (in thousands):~~June 25, 2021:

Our Condensed Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States, which require us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses and related disclosure at the date of our consolidated financial statements. On an on-going basis, we evaluate our estimates and judgments, including those related to sales, inventories, goodwill and intangible assets, stock compensation and income taxes. We base our estimates and judgments on historical experience and on various other factors that we believe to be reasonable under the circumstances, the results of which form the basis of our judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. We consider certain accounting policies related to revenue recognition, inventory valuation, accounting for income taxes, business combinations, valuation of intangible assets and goodwill, and equity incentives to employees to be critical policies due to the estimates and judgments involved in each.

There have been no material changes to our critical accounting policies, significant judgments and estimates disclosed in our Annual Report on Form 10-K subsequent to December 30, 2016. For further information on our critical and other significant accounting policies and estimates, see Part II, Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our Annual Report on Form 10-K for the fiscal year ended December 30, 2016, filed with the SEC.

There were no significant changes to our quantitative and qualitative disclosures about market risk during the ~~first nine months of fiscal 2017.~~period covered by this report. Refer to Part II, Item 7A. “Quantitative and Qualitative Disclosures about Market Risk” included in our Annual Report on Form 10-K for our fiscal year ended December ~~30, 2016~~25, 2020 for a more complete discussion of the market risks we encounter.

Under the ~~Securities Exchange Act~~supervision and with the participation of ~~1934 (the “Exchange Act”),~~our management, including our ~~Chief Executive Officer~~principal executive officer and ~~Chief Financial Officer,~~principal financial officer, we conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act as of the end of the period covered by this report (the "Evaluation Date"). Based on this evaluation, our principal executive officer and principal financial officer concluded as of the ~~effectiveness of our disclosure controls and procedures as defined in Exchange Act Rule 13a-15(e). Based upon our evaluation, we concluded~~Evaluation Date that our disclosure controls and procedures were effective ~~as of September 29, 2017.~~

Assuch that the information related to the Company, including our consolidated subsidiaries, required ~~by Rule 13a-15(d),~~to be disclosed in our SEC reports (i) is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and (ii) is accumulated and communicated to the Company's management, including our ~~Chief Executive Officer~~principal executive officer and ~~Chief~~principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial ~~Officer, also conducted an evaluation of our~~Reporting

There were no changes in internal ~~control~~controls over financial reporting ~~to determine whether any changes occurred~~ during the period covered by this report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. Based on our evaluation, we concluded that there has been no change during thefirst fiscal quarter ~~covered by this report~~ended June 25, 2021, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Any system of controls, however well designed and operated, can provide only reasonable, and not absolute, assurance that the objectives of the system will be met. In addition, the design of any control system is based in part upon certain assumptions about the likelihood of future events.

From time to time, we are subject to various legal proceedings and claims, either asserted or unasserted, that arise in the ordinary course of business. Although the outcome of the various legal proceedings and claims cannot be predicted with certainty, we have not had a history of outcomes to date that have been material to our ~~statement~~Condensed Consolidated Statement of ~~operations~~Operations and do not believe that any of these proceedings or other claims will have a material adverse effect on our condensed consolidated financial condition or results of operations.

~~The cyclical and highly volatile nature of~~There were no material changes during the ~~industries we serve could harm our operating results.~~

~~Our business and operating results depend~~period covered in significant part upon capital expenditures by manufacturers in the semiconductor capital equipment, consumer, medical, energy, industrial, flat panel and research industries, which in turn depend upon the current and anticipated market demand for such products. Historically, the industries we serve (in particular the semiconductor industry) have been highly cyclical, with recurring periods of over-supply of products that have had a severe negative effect on the demand for capital equipment used to manufacture such products. We have experienced and anticipate that we will continue to experience significant fluctuations in customer orders for our products through such cycles. Slowdowns in the industries we serve have had, and future slowdowns may also have, a material adverse effect on our operating results. During periods of decreasing demand for our products, we must be able to appropriately align our cost structure with prevailing market conditions, effectively manage our supply chain and motivate and retain employees. During periods of increased demand, we must increase manufacturing capacity and inventory to meet customer demands, effectively manage our supply chain and attract, retain and motivate a sufficient number of employees. If the industries we serve experience downturns, or if we are not able to timely and appropriately adaptthis report to the ~~changes~~risk factors previously disclosed in Part I, Item 1A, of our Annual Report on Form 10-K for the year ended December 25, 2020(as updated in our business environment, our results of operations will be harmed. Also, the cyclical and volatile nature of the industries we serve make future revenues, results of operations and net cash flows difficult to estimate.

~~We rely~~Current Report on a small number of original equipment manufacturing customers for a significant portion of our sales, and any adverse change in our relationships with these customers, including a decision by such customers not to continue to outsource critical subsystems to us or to give market share to one of our competitors, would adversely affect our business, results of operations and financial condition. Our customers also exert a significant amount of negotiating leverage over us, which may require us to accept lower operating margins, increased liability risks or changes in our operations in order to retain or expand our market share with them.

A relatively small number of OEM customers have historically accounted for a significant portion of our sales, and we expect this trend to continue. As a group, two customers accounted for 84.0%, 86.4% and 84.3% of sales for the nine months ended September 29, 2017, for fiscal years 2016 and 2015, respectively, and we expect that our sales will continue to be concentrated among a small number of customers. In addition, our customer contracts generally do not require customers to place any orders. Accordingly, the success of our business dependsForm 8-K filed on OEMs continuing to outsource the manufacturing of critical subsystems to us. Because of the small number of OEMs in the markets we serve, most of which are already our customers, it would be difficult to replace lost revenue resulting from the loss of, or the reduction, cancellation or delay in purchase orders by, any one of these customers, whether due to such customer’s decision to not continue to outsource all or a portion of its critical subsystems for its capital equipment to us, such customer giving market share to our competitors or for other reasons, such as a customer’s bankruptcy or insolvency or decreased demand for such customer’s products. We have in the past lost business from customers who have taken the manufacturing of our products in-house or given market share to our competitors. Further, since our customers generally own the designs and other intellectual property to the products we manufacture, we cannot prevent them from licensing such designs and other intellectual property to our competitors for the manufacturing of such products. If we are unable to replace revenue from customers who determine to take subsystem assembly in-house or give market share to our competitors, such events could have a material adverse impact on our financial position and results of operations.

In addition, consolidation among our customers, or a decision by any one or more of our customers to outsource all or most manufacturing and assembly work to a single equipment manufacturer, may further concentrate our business in a limited number of customers and expose us to increased risks relating to dependence on an even smaller number of customers.

In addition, by virtue of our largest customers’ sizes, and the significant portion of revenue that we derive from them, as well as the competitive landscape, our customers are able to exert significant influence and pricing pressure in the negotiation of our commercial agreements and individual purchase orders and on the conduct of our business with them. Our customers often require reduced prices or other pricing, quality, manufacturing or delivery commitments as a condition to their awarding of market share to us or the placement of orders with us in any given period, which may, among other things, result in reduced operating margins in order to maintain or expand our market share or require capital or other expenditures. Our customers’ negotiating leverage also can result in customer agreements or terms and conditions that may contain significant liability risk to us. For example, some of our customers

insist that we provide them indemnification against certain liabilities in our agreements with them, including claims of losses by their customers caused by our products, which may be uncapped. In some cases, we have determined to self-insure against liability risk in our customer agreements, meaning that we may be directly responsible for high magnitude liability claims by our customers without recourse to insurance proceeds from third-party insurers. Our customers may also pressure us to make other concessions in order to preserve or expand our market share with them, which may harm our business. For example, one or more of our customers may require us to move the manufacture of our products from lower-cost geographies or locations such as China to higher-cost geographies or locations, such as Singapore, that are closer to such customer’s facilities which could result in reduced margins and a sub-optimal cost structure. If we are unable to retain and expand our business with our customers on favorable terms, or at all, our business and operating results will be adversely affected, or we may be susceptible to increased liability risk which, if realized, may have a material adverse effect on our business, cash flows, results of operations and financial condition.

~~Our dependence on our suppliers may prevent us from delivering an acceptable product on a timely basis.~~

We rely on both single-source and sole-source suppliers, some of whom are relatively small, for many of the components we use in our products. In addition, our customers often specify components of particular suppliers that we must incorporate into our products. Our suppliers are under no obligation to accept or to provide us with components. As a result, the loss of or failure to perform by any of these suppliers could adversely affect our business and operating results. In addition, the manufacturing of certain components and subsystems is a complex process. Therefore, if a supplier were unable to provide the volume of components we require on a timely basis and at acceptable prices and quality, we would have to identify and qualify replacements from alternative sources. However, the process of qualifying new suppliers for complex components is lengthy and could delay our production, which would adversely affect our business, operating results and financial condition.

We may also experience difficulty in obtaining sufficient supplies of components and raw materials in times of growth in our business. For example, we have in the past experienced shortages in supplies of various components, such as mass flow controllers, valves and regulators, and certain prefabricated parts, such as sheet metal enclosures, used in the manufacture of our products. In addition, one of our competitors manufactures mass flow controllers that may be specified by one or more of our customers. If we are unable to obtain these particular mass flow controllers from our competitor or convince a customer to select alternative mass flow controllers, we may be unable to meet that customer’s requirements, which could result in a loss of market share.

If we, or our suppliers, are unable to procure sufficient quantities of components or raw materials from suppliers, it could influence decisions by our customers to delay or cancel orders and decisions by our vendors to fulfill our purchase orders and, consequently, have a material adverse effect on our results of operations.

Our customers require our products to undergo a lengthy and expensive qualification process. If we are unsuccessful or delayed in qualifying any of our products with a customer, our results of operations and financial condition could suffer.

We have had to qualify, and are required to maintain our status, as a supplier for each of our customers. This is often a lengthy process that involves the inspection and approval by a customer of our engineering, documentation, manufacturing and quality control procedures before that customer will place volume orders. Our ability to lessen the adverse effect of any loss of, or reduction in sales to, an existing customer through the rapid addition of one or more new customers is limited because of these qualification requirements. Consequently, the risk that our business, operating results and financial condition would be adversely affected by the loss of, or any reduction in orders by, any of our significant customers is increased. Moreover, if we lose our existing status as a qualified supplier to any of our customers, such customer could cancel its orders from us or otherwise terminate its relationship with us, which could have a material adverse effect on our results of operations and financial condition.

~~Our quarterly revenue and operating results fluctuate significantly from period to period, and this may cause volatility in our common stock price.~~

Our quarterly revenue and operating results, including our gross margin, have fluctuated significantly in the past, and we expect them to continue to fluctuate in the future for a variety of reasons which may include:

As a result of the foregoing, we believe that quarter-to-quarter comparisons of our revenue and operating results may not be meaningful and that these comparisons may not be an accurate indicator of our future performance. Changes in the timing or terms of a small number of transactions could disproportionately affect our operating results in any particular quarter. Moreover, our operating results in one or more future quarters may fail to meet our guidance or the expectations of securities analysts or investors. If this occurs, we would expect to experience an immediate and significant decline in the trading price of our common stock.

~~Our inability to successfully manage the implementation of a company-wide enterprise resource planning (“ERP”) system could adversely affect our operating results.~~

We are in the process of implementing a new Company-wide ERP system. This process has been and continues to be complex and time-consuming and we expect to incur additional expenses. This ERP system will replace many of our existing operating and financial systems, which is a major undertaking from a financial management and personnel perspective. Should the new ERP system not be implemented successfully throughout all our business units and within budget and on time, or if the system does not perform in a satisfactory manner, it could be disruptive and adversely affect our operations, including our potential ability to report accurate, timely and consistent financial results; our ability to purchase raw material from and pay our suppliers; and deliver products to customers on a timely basis and to collect our receivables from them. Furthermore, this new ERP system is intended to be implemented in all locations over the course of fiscal year 2019. Once operational, we expect depreciation of our capitalized ERP costs will be significant and may not be offset by the efficiencies we expect this system to produce for the Company.

In addition, we have put teams together who are leading the implementation of the ERP system at all of our locations. To the extent that this team or key individuals are not retained through the implementation period, the success of our implementation could be compromised and the expected benefits would not be realized. If the new ERP system is not successfully implemented, it could negatively affect our future sales, profitability and financial condition.

We rely to a significant extent on OEM customers, whose business, in turn, depends largely on consumer spending and capital expenditures by businesses. Uncertainty regarding the global economy may pose challenges to our business. Economic uncertainty may exacerbate negative trends in business and consumer spending and may cause certain of our customers to push out, cancel, or refrain from placing orders for products or services, which may reduce sales and materially affect our results of operations and financial condition. Difficulties in obtaining capital, uncertain market conditions, or reduced profitability may also cause some

customers to scale back operations, exit businesses, merge with other manufacturers, or file for bankruptcy protection and potentially cease operations, leading to customers’ reduced research and development funding and/or capital expenditures and, in turn, lower orders from our customers and/or additional slow moving or obsolete inventory or bad debt expense for us. These conditions may also similarly affect key suppliers, which could impair their ability to deliver parts and result in delays for our products or require us to either procure products from high-cost suppliers, or if no additional suppliers exist, to reconfigure the design and manufacture of our products, and we may be unable to fulfill customer orders.

~~Significant developments stemming from the recent change in the U.S. administration could have a material adverse effect on us.~~

On January 20, 2017, Mr. Donald J. Trump was inaugurated as the president of the United States. While it is uncertain at this time how the Trump administration and the results of other elections could affect changes in social, political, regulatory and economic conditions or laws and policies, according to publicly released statements, one top legislative priority of the Trump administration and the new Congress may be reform of the Internal Revenue Code of 1986, as amended, including significant changes to taxation of business entities and the deductibility of interest expense. In addition, President Trump has expressed apprehension towards existing trade agreements, such as the North American Free Trade Agreement (NAFTA), signed an executive order announcing his plan to withdraw the United States from the Trans-Pacific Partnership (TPP) in favor of bilateral trade negotiations with the member countries, and has raised the possibility of imposing significant increases on tariffs on goods imported into the United States, including from China, where we and our customers have significant operations. Changes in U.S. social, political, regulatory and economic conditions or laws and policies governing U.S. tax laws, foreign trade, manufacturing, and development and investment in the countries where we or our customers operate could adversely affect our operating results and our business.

We have significant existing indebtedness; the restrictive covenants under our credit agreement or other limitations on financing may limit our ability to expand or pursue our business strategy or make capital expenditures; if we are forced to pay some or all of our indebtedness prior to its maturity, our financial position could be severely and adversely affected.

On February 2, 2015, we entered into a new credit agreement by and among us, certain of our subsidiaries, East West Bank and City National Bank. This agreement was subsequently amended in December 2015 with such amendments effective as of December 25, 2015 (as amended, the “Credit Agreement”). This Credit Agreement provides for a term loan in an aggregate principal amount of $40.0 million and a revolving credit facility in an aggregate principal amount of $40.0 million, a letter of credit facility in the aggregate availability amount of $20.0 million and a swingline sub-facility in the aggregate availability amount of $5.0 million. On February 2, 2015, we borrowed an aggregate of $46.5 million under this Credit Agreement to repay the remaining outstanding balance from our prior loan with Silicon Valley Bank. On February 5, 2015, we borrowed an additional $29.7 million under this Credit Agreement to finance the acquisition of Marchi. The Company has a balance of $39.9 million on its revolving loan with $0.1 million available to borrow as of September 29, 2017. The Company’s term loan balance is $13.3 million as of September 29, 2017. In addition, Miconex has a debt balance of $4.3 million as of September 29, 2017. The Company’s total debt as of September 29, 2017, gross of capitalized loan costs of $0.2 million, was $57.5 million.

Our ability to meet our expenses and debt obligations will depend on our future performance, which will be affected by financial, business, economic, regulatory, and other factors. Furthermore, our operations may not generate sufficient cash flows to enable us to meet our expenses and service our debt. If we are unable to meet our debt obligations as they come due, we could be forced to restructure or refinance such obligations, seek additional equity financing or sell assets, which we may not be able to do on satisfactory terms, or at all. If we determine it is necessary to seek additional funding for any reason, we may not be able to obtain such funding or, if funding is available, obtain it on acceptable terms.

~~Our Credit Agreement also contains certain covenants that restrict our ability to take certain actions, including our ability to:~~

The restrictive covenants in our Credit Agreement may therefore limit our strategic and financing options and limit our ability to return capital to our stockholders through dividends or stock buybacks.

Our Credit Agreement also requires us to maintain certain financial and other covenants, including compliance with a maximum consolidated leverage ratio, a minimum fixed charge ratio and a minimum cash balance. We cannot assure you that we will be able to maintain compliance with such financial or other covenants. Our failure to comply with these covenants could result in an event of default which, if not cured or waived, could result in the acceleration of all of our indebtedness, which would materially adversely affect our financial health if we are unable to access sufficient funds to repay all of the outstanding amounts.

In addition, the Credit Agreement has certain mandatory prepayment provisions, including annual prepayments of excess cash flow above certain thresholds. As long as our indebtedness remains outstanding, the restrictive covenants and mandatory prepayment provisions could impair our ability to expand or pursue our business strategies or obtain additional funding.

~~We may not be able to fund our future capital requirements or strategic acquisitions from our operations, and financing from other sources may not be available on favorable terms or at all.~~

We made capital expenditures of approximately $13.9 million and $5.8 million for the nine months ended September 29, 2017 and September 23, 2016, respectively related to our manufacturing facilities in the United States and Singapore. In February 2015, we paid approximately $29.9 million and issued 1,437,500 shares of our common stock in connection with our acquisition of Marchi. The cash portion of the merger consideration was financed through the new credit facility described above; of which an aggregate of $53.2 million was outstanding as of September 29, 2017. In July 2015, we acquired Miconex for total consideration of $20.7 million which includes $15.6 million paid in cash, 500,000 shares of Company’s common stock, and up to $4.0 million of potential cash “earn-out” payments over two-year period. In 2016, Miconex achieved the specified performance targets for the first year and was paid the maximum of $2.0 million of the $4.0 million potential cash earn-out. The amount of our future capital requirements or strategic acquisitions will depend on many factors, including:

We had $65.9 million in cash and cash equivalents as of September 29, 2017 of which $61.2 million was held by our foreign subsidiaries. If the cash and cash equivalents held by our foreign subsidiaries is needed for our operations or to fund capital expenditures or other strategic acquisitions in the U.S., we would be required to accrue and pay U.S. taxes to repatriate these funds. In addition, such funds may not be readily available to meet our domestic cash requirements.

Given our significant existing leverage, limited availability under our new revolving line of credit and the potential tax effects of repatriating foreign cash or other factors, we may need to raise additional funds through public or private equity or debt financing if our current domestic cash and cash flow from operations are insufficient to fund our future activities. We may not be able to obtain additional debt financing when and if necessary in a timely manner. Access to capital markets has, in the past, been unavailable to companies such as ours and there can be no assurance that we would be able to complete an equity or other financing arrangement with terms satisfactory to us or at all. In addition, equity financings could be dilutive to holders of our common stock, and debt financings would likely involve additional covenants that restrict our business operations. Any potential strategic acquisition or significant capital expenditure may also require the consent of our existing lenders. If we cannot raise funds on acceptable terms if and

when needed, we may not be able to develop or enhance our products, take advantage of future opportunities, including potential acquisitions, grow our business or respond to competitive pressures or unanticipated requirements, any of which could adversely affect our business, operating results and financial condition.

~~The manufacturing of our products is highly complex, and if we are not able to manage our manufacturing and procurement process effectively, our business and operating results will suffer.~~

The manufacturing of our products is a highly complex process that involves the integration of multiple components and requires effective management of our supply chain while meeting our customers’ design-to-delivery cycle time requirements. Through the course of the manufacturing process, our customers may modify design and system configurations in response to changes in their own customers’ requirements. In order to rapidly respond to these modifications and deliver our products to our customers in a timely manner, we must effectively manage our manufacturing and procurement process. If we fail to manage this process effectively, we risk losing customers and damaging our reputation. We may also be subject to liability under our agreements with our customers if we or our suppliers fail to effectively or timely re-configure manufacturing processes or components in response to these modifications or if shipments of our products are delayed, which may lead to product defect or other claims by our customers or cancelled orders. In addition, if we acquire inventory in excess of demand or that does not meet customer specifications, we could incur excess or obsolete inventory charges. These risks are even greater during periods of macroeconomic uncertainty or down cycles in our industry, and as we continue to expand our business beyond gas delivery systems into new subsystems with which we have less experience. During periods of economic uncertainty or down cycles in our industry, certain of our suppliers may be forced to reduce or go out of business, which could require us to either procure products from higher-cost suppliers or, if no additional suppliers exist, reconfigure the design and manufacture of our products. This could limit our growth and have a material adverse effect on our business, financial condition and operating results.

~~We may not be able to respond quickly enough to changes in demand for our products.~~

Demand shifts in the industries we serve are rapid and difficult to predict, and we may not be able to anticipate or respond quickly enough to changes in demand. Our ability to increase sales of our products in periods of increasing demand depends, in part, upon our ability to:

If we are unable to respond to rapid increases in demand for our products on a timely basis or to manage any corresponding expansion of our manufacturing capacity effectively, our customers could increase their purchases from our competitors, which would adversely affect our business.

~~Our ability to remain profitable and mitigate the impact on our business in periods of decreasing demand depends, in part, upon our ability to:~~

~~We have established and, as markets will allow, intend to expand our operations in Asia and Europe, which exposes us to risks associated with operating in foreign countries.~~

We generated approximately 52.8% and 46.5% of our sales in international markets for the nine months ended September 29, 2017 and September 23, 2016, respectively. Depending on market conditions, we intend to expand our operations in Asia and Europe, principally in China and Singapore and the Czech Republic. In addition, through our acquisition of AIT, we acquired a manufacturing facility in Cebu, Philippines. The carrying amount of our fixed assets in Asia and Europe were $9.9 million and $1.6 million, respectively as of September 29, 2017.

~~We are exposed to political, economic, legal and other risks associated with operating in Asia and Europe, including:~~

Negative or uncertain global conditions could prevent us from accurately forecasting demand for our products which could adversely affect our results of operations. In addition, due to generally lower labor and materials costs in the Asian markets in which we currently operate, a shift in the mix of orders from our customers away from such Asian markets could adversely affect our operating margins.

Our operations in Asia and Europe are also subject us to U.S. laws governing the export of equipment. These laws are complex and require us to obtain clearances for the export to Asia and Europe of certain equipment. We may fail to comply with these laws and regulations, which could require us to cease the export of certain equipment and expose us to fines or penalties.

Over the past several years, the Chinese government has pursued economic reform policies, including the encouragement of private economic activity and greater economic decentralization. The Chinese government may not continue these policies or may significantly alter them to our detriment from time to time without notice. Changes in laws and regulations or their interpretation, the imposition of confiscatory taxation policies, new restrictions on currency conversion or limitations on sources of supply could materially and adversely affect our Chinese operations, which could result in the partial or total loss of our investment in that country and materially and adversely affect our future operating results.

~~We are subject to order and shipment uncertainties and any significant reductions, cancellations or delays in customer orders could cause our revenue to decline and our operating results to suffer.~~

Our revenue is difficult to forecast because we generally do not have a material backlog of unfilled orders and because of the short time frame within which we are often required to design, produce and deliver products to our customers. Most of our revenue in any quarter depends on customer orders for our products that we receive and fulfill in the same quarter. We do not have long-term purchase orders or contracts that contain minimum purchase commitments from our customers. Instead, we receive non-binding forecasts of the future volume of orders from our customers. Occasionally, we order and build component inventory in advance of the receipt of actual customer orders. Customers may cancel order forecasts, change production quantities from forecasted volumes or

delay production for reasons beyond our control. Furthermore, reductions, cancellations or delays in customer order forecasts, which may occur for various reasons, including reduced demand for our customer’s products, customer bankruptcies or customer insolvency, usually occur without penalty to, or compensation from, the customer. Reductions, cancellations or delays in forecasted orders could cause us to hold inventory longer than anticipated, which could reduce our gross profit, restrict our ability to fund our operations and cause us to incur unanticipated reductions or delays in revenue. Moreover, most of the products we manufacture are custom built for our customers and are therefore not fungible with products we sell to other customers. If we do not obtain orders as we anticipate, we could have excess component inventory for a specific product that we would not be able to sell to another customer, likely resulting in inventory write-offs, which could have a material adverse effect on our business, financial condition and operating results. In addition, because many of our costs are fixed in the short term, we could experience deterioration in our gross profit and operating margins when our production volumes decline.

~~The industries in which we participate are highly competitive and rapidly evolving, and if we are unable to compete effectively, our operating results will be harmed.~~

We face intense competition from subsystem and component manufacturers in the industries we serve. Increased competition has in the past resulted, and could in the future result, in price reductions, reduced gross margins or loss of market share, any of which would harm our operating results. We are subject to significant pricing pressure as we attempt to maintain and increase market share with our existing customers. Competitors may offer reduced prices or introduce new products for the markets currently served by our products. These products may have better performance, lower prices and achieve broader market acceptance than our products. Further, OEMs typically own the design rights to their products and may provide these designs to other subsystem manufacturers. If our competitors obtain proprietary rights to these designs such that we are unable to obtain the designs necessary to manufacture products for our OEM customers, our business, financial condition and operating results could be adversely affected.

Our competitors may have greater financial, technical, manufacturing and marketing resources than we do. As a result, they may be able to respond more quickly to new or emerging technologies and changes in customer requirements, devote greater resources to the development, promotion, sale and support of their products, and reduce prices to increase market share. Moreover, there may be merger and acquisition activity among our competitors and potential competitors that may provide our competitors and potential competitors an advantage over us by enabling them to expand their product offerings and service capabilities to meet a broader range of customer needs. Further, if one of our customers develops or acquires the internal capability to develop and produce critical systems or subsystems that we produce, the loss of that customer could have a material adverse effect on our business, financial condition and operating results. The introduction of new technologies and new market entrants may also increase competitive pressures.

~~If our new products are not accepted by OEMs or other customers or if we are unable to obtain historical margins on our new products, our operating results would be adversely impacted.~~

We design, develop and market critical systems and subsystems to OEMs and other customers. The introduction of new products is inherently risky because it is difficult to foresee the adoption of new standards, coordinate our technical personnel and strategic relationships and win acceptance of new products by OEMs and other customers. We may not be able to recoup design and development expenditures if our new products are not accepted by OEMs or other customers. Newly introduced products typically carry lower gross margins than existing products for several or more quarters following their introduction. If any of our new systems or subsystems are not successful in the market, or if we are unable to obtain gross margins on new products that are similar to the gross margins we have historically achieved, our business, operating results and financial condition could be adversely affected.

Our business may be adversely affected by information technology, disruptions, including impairing our ability to effectively deliver our products, which could cause us to lose customers and harm our results of operations.

The manufacture and delivery of our products depends on the continuing operation of our technology infrastructure and systems, particularly our data center located in California. Any damage to or failure of our systems could result in interruptions in our ability to manufacture or deliver products on agreed upon lead times, or at all, on a local or worldwide basis. Interruptions could reduce our sales and profits, and our reputation could be damaged if people believe our systems are unreliable. Our systems and operations are vulnerable to damage or interruption from earthquakes, terrorist attacks, floods, fires, power loss, hardware or software failures, telecommunications failures, cybersecurity attacks, and similar events. The critical components of the system are not redundant and we currently do not have a backup data center. Accordingly, the risk associated with such events beyond our control is heightened.

Cybersecurity attacks, in particular, are evolving and include, but are not limited to, malicious software, attempts to gain unauthorized access to data, and other electronic security breaches that could lead to disruptions in systems, unauthorized release of confidential or otherwise protected information and corruption of data (our own or that of third parties). Although we have adopted certain measures to mitigate potential risks to our systems from information technology-related disruptions, given the unpredictability of the timing, nature and scope of such disruptions, we could potentially be subject to production downtimes, operational delays, other

detrimental impacts on our operations or ability to provide products and services to our customers, the compromising of confidential or otherwise protected information, misappropriation, destruction or corruption of data, security breaches, other manipulation or improper use of our systems or networks, financial losses from remedial actions, loss of business or potential liability, and/or damage to our reputation, any of which could have a material adverse effect on our business, financial condition, results of operations and cash flows.

If we experience frequent or persistent system failures, the attractiveness of our products to customers could be permanently harmed. Any steps we take to increase the reliability and redundancy of our systems may be expensive, reduce our operating margin and may not be successful in reducing the frequency or duration of unscheduled interruptions.

Acquisitions could result in operating and integration difficulties, dilution, margin deterioration, diversion of management’s attention, and other consequences that may adversely impact our business and results of operations.

We have made, and may in the future make, acquisitions of, or significant investments in, businesses that offer complementary products, services, technologies or market access. We expect that management will evaluate potential strategic transactions regularly with its advisors and our board of directors in the ordinary course of business. We may not be successful in negotiating the terms of potential acquisitions or financing potential acquisitions, and our due diligence may fail to identify all of the problems, liabilities or other challenges associated with an acquired business, product or technology, including issues related to intellectual property, product quality or product architecture, regulatory compliance practices, revenue recognition or other accounting practices or employee or customer retention issues. In addition, we may not be successful in effectively integrating the acquired business, product or technology into our existing business and operations. The areas where we face risks include:

Our failure to address these risks or other problems encountered in connection with our past or future acquisitions and investments could cause us to fail to realize the anticipated benefits of such acquisitions or investments, incur unanticipated liabilities and substantial costs, and materially harm our business generally.

Our acquisitions could also result in dilutive issuances of our equity securities, the incurrence of debt, contingent liabilities, or amortization expenses, impairment charges and restructuring charges, any of which could harm our financial condition. Also, the anticipated benefits or value of our acquisitions or investments may not materialize. Even if an acquisition or other investment is not completed, we may divert significant management time and effort and financial cost in evaluating such acquisition or investment, which could have an adverse effect on our results of operations. Furthermore, due to limited liquidity in the credit market and our existing leverage, the financing of any such acquisition may be difficult to obtain, and the terms of such financing may not be favorable.

~~If we were required to write down all or part of our goodwill, our net income and net worth could be materially adversely affected.~~

We had $85.2 million of goodwill recorded on our consolidated balance sheet as of September 29, 2017. Goodwill represents the excess of cost over the fair market value of net tangible and finite lived, identifiable intangible assets acquired in business combinations. If our market capitalization drops significantly below the amount of net equity recorded on our balance sheet, it could indicate a decline in our value and would require us to further evaluate whether our goodwill has been impaired. During the fourth

quarter of each year, we perform an annual review of our goodwill to determine if it has become impaired, in which case we would write down the impaired portion of our goodwill. We also evaluate goodwill for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If we were required to write down all or a significant part of our goodwill, our financial results and net worth could be materially adversely affected.

~~Our business is largely dependent on the know-how of our employees, and we generally do not have an intellectual property position that is protected by patents.~~

Our business is largely dependent upon our design, engineering, manufacturing and testing know-how. We rely on a combination of trade secrets and contractual confidentiality provisions and, to a much lesser extent, patents, copyrights and trademarks to protect our proprietary rights. Confidentiality agreements with our employees and others may not adequately prevent disclosure of trade secrets and other proprietary information. Accordingly, our intellectual property position is more vulnerable than it would be if it were protected primarily by patents. If we fail to protect our proprietary rights successfully, our competitive position could suffer, which could harm our operating results. We may be required to spend significant resources to monitor and protect our proprietary rights, and, in the event infringement or breach of our proprietary rights occurs, our competitive position in the market may be harmed. In addition, competitors may design around our technology or develop competing technologies and know-how. Further, since our customers generally own the designs and other intellectual property to the products we manufacture, we cannot prevent them from licensing such designs and other intellectual property to our competitors for the manufacture of such products.

Third parties have claimed and may in the future claim we are infringing their intellectual property, which could subject us to litigation or licensing expenses, and we may be prevented from selling our products if any such claims prove successful.

We have in the past and may in the future receive claims that our products, processes or technologies infringe the patents or other proprietary rights of third parties. In addition, we may be unaware of intellectual property rights of others that may be applicable to our products. Any litigation regarding our patents or other intellectual property could be costly and time-consuming and divert the attention of our management and key personnel from our business operations, any of which could have a material adverse effect on our business and results of operations. The complexity of the technology involved in our products and the uncertainty of intellectual property litigation increase these risks. Claims of intellectual property infringement may also require us to enter into costly license agreements. However, we may not be able to obtain licenses on terms acceptable to us, or at all. We also may be subject to significant damages or injunctions against the development, manufacture and sale of certain of our products if any such claims prove successful. We also rely on design specifications and other intellectual property of our customers in the manufacture of products for such customers. While our customer agreements generally provide for indemnification of us by our customers if we are subjected to litigation for third-party claims of infringement of such customer intellectual property, such indemnification provisions may not be sufficient to fully protect us from such claims, or our customers may breach such indemnification obligations to us, which could result in costly litigation to defend against such claims or enforce our contractual rights to such indemnification.

~~If we do not keep pace with developments in the industries we serve and with technological innovation generally, our products may not be competitive.~~

Rapid technological innovation in the markets we serve requires us to anticipate and respond quickly to evolving customer requirements and could render our current product offerings and technology obsolete. Technological innovations are inherently complex. We must devote resources to technology development in order to keep pace with such rapidly evolving technologies. We believe that our future success will depend upon our ability to design, engineer and manufacture products that meet the changing needs of our customers. This requires that we successfully anticipate and respond to technological changes in design, engineering and manufacturing processes in a cost-effective and timely manner. If we are unable to integrate new technical specifications into competitive product designs, develop the technical capabilities necessary to manufacture new products or make necessary modifications or enhancements to existing products, our business prospects could be harmed.

~~The timely development of new or enhanced products is a complex and uncertain process which requires that we:~~

If we are unsuccessful in keeping pace with technological developments for the reasons above or other reasons, our business prospects, results of operations and financial condition could be materially and adversely affected.

~~We must achieve design wins to retain our existing customers and to obtain new customers.~~

New capital equipment typically has a lifespan of several years, and OEMs frequently specify which systems, subsystems, components and instruments are to be used in their equipment. Once a specific system, subsystem, component or instrument is incorporated into a piece of capital equipment, it will likely continue to be incorporated into that piece of equipment for at least several months before the OEM would be in a position to switch to the product of another supplier. Accordingly, it is important that our products are designed into the new capital equipment of OEMs, which we refer to as a design win, in order to retain our competitive position with existing customers and to obtain new customers.

We incur technology development and sales expenses with no assurance that our products will ultimately be designed into an OEM’s capital equipment. Further, developing new customer relationships, as well as maintaining and increasing our market share with existing customers, requires a substantial investment of our sales, engineering and management resources without any assurance from prospective customers that they will place significant orders. We believe that OEMs often consider long-term relationships in selecting and placing orders with suppliers. Accordingly, we may have difficulty achieving design wins from OEMs that are not currently our customers. Our operating results and potential growth could be adversely affected if we fail to achieve design wins with leading OEMs.

Defects in our products could damage our reputation, decrease market acceptance of our products, cause the unintended release of hazardous materials, result in potentially costly litigation, indemnification liability or unexpected warranty claims.

A number of factors, including design flaws, material and component failures, workmanship issues, contamination in the manufacturing environment, impurities in the materials used and unknown sensitivities to process conditions, such as temperature and humidity, as well as equipment failures, may cause our products to contain undetected errors or defects. Problems with our products may:

If any of our products contain defects or have reliability, quality or compatibility problems, our reputation might be damaged and customers might be reluctant to buy our products. We may also face a higher rate of product defects as we increase our production levels. Product defects could result in warranty and indemnification liability, the loss of existing customers or impair our ability to attract new customers. In addition, we may not find defects or failures in our products until after they are installed in a manufacturer’s fabrication facility. We may have to invest significant capital and other resources to correct these problems. Our current or potential customers also might seek to recover from us any losses resulting from defects or failures in our products. Hazardous materials flow through and are controlled by our products and an unintended release of these materials could result in serious injury or death. Liability claims could require us to spend significant time and money in litigation or pay significant damages or indemnification claims.

~~The technology labor market is very competitive, and our business will suffer if we are unable to effectively hire, promote and retain key personnel.~~

Our future success depends in part on the continued service of our key executive officers, as well as our research, engineering, sales, manufacturing and administrative personnel, most of whom are not subject to employment or non-competition agreements. In addition, competition for qualified personnel in the technology industry is intense, and we operate in geographic locations in which labor markets are particularly competitive.

Our business is particularly dependent on expertise which only a limited number of engineers possess. The loss of any of our key employees and officers, including our Chief Executive Officer, our Chief Financial Officer, any of our Senior Vice Presidents or any of our senior managers, or the failure to attract, promote and retain qualified employees, could adversely affect our business, operating results and financial condition.

Management transition also creates uncertainties and could harm our business. Disruption to our organization as a result of executive management transition could divert the executive management’s attention away from certain key areas of our business and have a material adverse effect on our business, financial condition and results of operations.

The challenges of employee retention has also increased during the integration process with the companies we have acquired because of the necessity of combining personnel with varied business backgrounds and combining different corporate cultures and objectives, and several acquired employees, including members of the acquired companies’ senior management, have left our company. The process of integrating operations and making such adjustments could cause an interruption of, or loss of momentum in, the activities of one or more of our businesses and the loss of key personnel. Employee uncertainty, lack of focus or turnover during the integration process may also disrupt our businesses.

If we fail to maintain an effective system of internal controls, we might not be able to report our financial results accurately or prevent fraud; in that case, our stockholders could lose confidence in our financial reporting, which would harm our business and could negatively impact the price of our stock.

Effective internal controls are necessary for us to provide reliable financial reports and prevent fraud. In addition, Section 404 of the Sarbanes-Oxley Act of 2002 requires us and our independent registered public accounting firm to evaluate and report on our internal control over financial reporting. The process of designing, implementing, maintaining and updating our internal controls and complying with Section 404 is expensive and time consuming, and requires significant attention from management and company resources. In addition, following the expiration of applicable grace periods, we are required to evaluate and report on the internal controls of the companies we acquire, and the attestation report we are required to obtain from our independent registered public accounting firm must include the internal control over financial reporting of the companies we acquire. Integrating acquired companies’ internal control frameworks into the Company and upgrading acquired companies’ controls to comply with the Sarbanes-Oxley Act has required and will require substantial resources, and we cannot assure you that we will be able to successfully or effectively maintain adequate controls over our financial processes at our acquired companies, or for our consolidated business. In addition, even though we have concluded, and our independent registered public accounting firm has concurred, that our internal control over financial reporting provides reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles as of December 30, 2016, because of its inherent limitations may not be effective as of future periods. Failure to maintain existing or implement new or improved controls, or difficulties encountered in their implementation, could harm our results of operations or cause us to fail to meet our reporting obligations. If we or our independent registered public accounting firm discover a material weakness, the disclosure of that fact, even if quickly remedied, could reduce the market’s confidence in our financial statements and harm our stock price.

~~Fluctuations in currency exchange rates may adversely affect our financial condition and results of operations.~~

Our international sales are denominated primarily, though not entirely, in U.S. dollars. Many of the costs and expenses associated with our Chinese subsidiaries, Singaporean and Czech subsidiaries are paid in Chinese Renminbi, Singapore dollars, and Euro respectively and we expect our exposure to Chinese Renminbi, Singapore dollars and Euro to increase as we increase production in those facilities. In addition, purchases of some of our components are denominated in Japanese Yen and Euro. Changes in exchange rates among other currencies in which our revenue or costs are denominated and the U.S. dollar may affect our revenue, cost of sales and operating margins.

The Company uses derivative instruments, such as foreign currency forward contracts, to hedge certain exposures to fluctuations in foreign currency exchange rates. The use of such hedging activities may not offset any, or more than a portion, of the adverse financial effects of unfavorable movements in foreign exchange rates over the limited time the hedges are in place.

~~If environmental contamination were to occur in one of our manufacturing facilities, we could be subject to substantial liabilities.~~

We use substances regulated under various foreign, domestic, federal, state and local environmental laws in our manufacturing facilities. In addition, we may not be aware of or in compliance with all environmental laws or regulations that could subject us to liability in the U.S. or internationally. Our failure or inability to comply with existing or future environmental laws could result in significant remediation liabilities, the imposition of fines or the suspension or termination of the production of our products, and thus a material adverse impact on our business.

~~Our business is subject to the risks of earthquakes, fire, power outages, floods, and other catastrophic events, and to interruption by man-made disruptions, such as terrorism.~~

Our facilities could be subject to a catastrophic loss caused by natural disasters, including fires and earthquakes. We have facilities in areas with above average seismic activity, such as our manufacturing facility in South San Francisco, California and our manufacturing and headquarters facilities in Hayward, California. If any of our facilities were to experience a catastrophic loss, it could disrupt our operations, delay production and shipments, reduce revenue and result in large expenses to repair or replace the facility. In addition, we have in the past experienced, and may in the future experience, extended power outages at our facilities. We do not carry insurance policies that cover potential losses caused by earthquakes or other natural disasters or power loss.

In addition, disruption in supply resulting from natural disasters or other causalities or catastrophic events, such as earthquakes, severe weather such as storms or floods, fires, labor disruptions, power outages, terrorist attacks or political unrest, may result in certain of our suppliers being unable to deliver sufficient quantities of components or raw materials at all or in a timely manner, disruptions in our operations or disruptions in our customers’ operations. For example, in 2011, the northern region of Japan experienced a severe earthquake followed by a tsunami. These geological events caused significant damage in that region and adversely affected Japan’s infrastructure and economy. Some of our suppliers are located in Japan and they experienced, and may experience in the future, shutdowns or disruptions as a result of these types of events, and their operations may be negatively impacted by these events. Many of our customers and suppliers are also located in California, and may be subject to the same risk of seismic activity as described for us above.

To the extent that natural disasters or other calamities or causalities should result in delays or cancellations of customer orders, or the delay in the manufacture or shipment of our products or services, our business, financial condition and operating results would be adversely affected.

~~Changes in tax rates or tax assets and liabilities could affect results of operations.~~

As a global company, we are subject to taxation in the United States and various other countries. Significant judgment is required to determine and estimate worldwide tax liabilities. Our future annual and quarterly tax rates could be affected by numerous factors, including changes in the: (1) applicable tax laws; (2) amount and composition of pre-tax income in countries with differing tax rates; or (3) valuation of our deferred tax assets and liabilities.

In addition, we are subject to regular examination by the Internal Revenue Service and other tax authorities, and from time to time we initiate amendments to previously filed tax returns. We regularly assess the likelihood of favorable or unfavorable outcomes resulting from these examinations and amendments to determine the adequacy of our provision for income taxes, which requires estimates and judgments. Although we believe our tax estimates are reasonable, there can be no assurance that the tax authorities will agree with such estimates. We may have to engage in litigation to achieve the results reflected in the estimates, which may be time-consuming and expensive. There can be no assurance that we will be successful or that any final determination will not be materially different from the treatment reflected in our historical income tax provisions and accruals, which could materially and adversely affect our financial condition and results of operations.

The size of our public market capitalization is relatively small, and the average volume of our shares that are traded is relatively low. The market price of our common stock could be subject to significant fluctuations. Among the factors that could affect our stock price are:

The stock markets in general, and the markets for technology stocks in particular, have experienced extreme volatility that has often been unrelated to the operating performance of particular companies. These broad market fluctuations may adversely affect the trading price of our common stock.

~~Certain regulations related to conflict minerals could adversely impact our business.~~

The Dodd-Frank Wall Street Reform and Consumer Protection Act contains provisions to improve transparency and accountability concerning the supply of certain minerals, known as conflict minerals, originating from the Democratic Republic of Congo (DRC) and adjoining countries. As a result, in August 2012 the SEC adopted annual disclosure and reporting requirements for those companies who use conflict minerals mined from the DRC and adjoining countries in their products. These requirements require us to perform on-going due diligence efforts on our supply chain and require public disclosure of the nature and results of these efforts. We filed our most recent conflict minerals report on Form SD on May 27, 2016 reporting that we could not yet determine whether the conflict minerals we source were, directly or indirectly, used to finance or benefit armed groups in the Covered Countries. There have been and there will be costs associated with complying with these disclosure requirements to determine the sources of conflict minerals used in our products and other potential changes to products, processes or sources of supply as a consequence of such verification activities. Complying with these rules could adversely affect the sourcing, supply and pricing of materials used in our products and result in substantial additional costs. As there may be only a limited number of suppliers offering “conflict free” conflict minerals, we cannot be sure that we will be able to obtain necessary conflict minerals from such suppliers in sufficient quantities or at competitive prices. Also, we may face reputational challenges if we determine that certain of our products contain minerals not determined to be conflict free or if we are unable to sufficiently verify the origins for all conflict minerals used in our products through the procedures we may implement. In addition, if we are unable to comply with these rules, we could be subject to enforcement actions by the Securities and Exchange Commission and liability under the Securities Exchange Act of 1934, as amended, which could result in material adverse consequences to our business, as well as significant fines and penalties.

~~If securities or industry analysts do not publish research or reports about our business, or if they issue an adverse opinion regarding our stock, our stock price and trading volume could decline.~~

The trading market for our common stock is influenced by the research and reports that industry or securities analysts publish about us or our business. If any of the analysts who cover us issue an adverse opinion regarding our stock, our stock price would likely decline. If one or more of these analysts ceases coverage of our company or fails to publish reports on us regularly, we could lose visibility in the financial markets, which in turn could cause our stock price or trading volume to decline.

~~We do not currently intend to pay dividends on our common stock and, consequently, your ability to achieve a return on your investment will depend on appreciation in the price of our common stock.~~

We do not intend to declare and pay dividends on our capital stock for the foreseeable future. We currently intend to invest our future earnings, if any, to fund our growth. Additionally, the terms of our credit agreement also restrict our ability to pay dividends. Therefore, you are not likely to receive any dividends on your common stock for the foreseeable future.

The following exhibits are filed with this ~~current~~quarterly Report on Form 10-Q for the quarter ended ~~September 29, 2017:~~June 25, 2021:

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.

Delaware		61-1430858
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

26462 Corporate Avenue, Hayward, California		94545
(Address of principal executive offices)		(Zip Code)


Large accelerated filer	☐☒	Accelerated filer	☒
			☐
Non-accelerated filer	☐ ~~(Do not check if a smaller reporting company)~~	Smaller reporting company	☐

		Emerging growth company	☐


	PART I. FINANCIAL INFORMATION
ITEM 1.	UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS	3
ITEM 2.	MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	2228
ITEM 3.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	2836
ITEM 4.	CONTROLS AND PROCEDURES	2836
	PART II. OTHER INFORMATION
ITEM 1.	LEGAL PROCEEDINGS	2937
ITEM 1A.	RISK FACTORS	2937
ITEM 2.	UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	4237
~~ITEM~~ ITEM��3.	DEFAULTS UPON SENIOR SECURITIES	4237
ITEM 4.	MINE SAFETY DISCLOSURES	4337
ITEM 5.	OTHER INFORMATION	4337
ITEM 6.	EXHIBITS	4337
SIGNATURES		4538

	Shares			Weighted Average Exercise Price		Weighted Remaining Contractual Life (years)		Aggregate Intrinsic Value (in thousands)
Outstanding at December 30, 2016		136,459		$	13.15		0.57	$	135
Granted		—
Exercised		(113,362	)		13.96
Cancelled		(13,825	)		14.56
Outstanding at September 29, 2017		9,272		$	1.17		1.49	$	273
Options exercisable at September 29, 2017		9,272		$	1.17		1.49	$	273

	Shares			Aggregate Fair Value (in thousands)
Unvested restricted stock units and restricted stock awards at December 30, 2016		1,757,507		$	16,466
Granted		719,380
Vested		(705,213	)
Forfeited		(55,829	)
Unvested restricted stock units and restricted stock awards at September 29, 2017		1,715,845		$	50,932
Vested and expected to vest restricted stock units and restricted stock awards at September 29, 2017		1,715,845		$	50,932

	September 29,			December 30,
	2017			2016
ASSETS
Current assets:
Cash and cash equivalents	$	65,939		$	52,465
Accounts receivable, net of allowance of $44 and $65, respectively		107,662			74,663
Inventories		165,303			103,861
Prepaid expenses and other		11,460			6,461
Total current assets		350,364			237,450
Equipment and leasehold improvements, net		28,943			18,858
Goodwill		85,248			85,248
Purchased intangibles, net		33,331			37,024
Deferred tax assets, net		1,098			1,355
Other non-current assets		1,769			762
Total assets	$	500,753		$	380,697
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Bank borrowings	$	15,518		$	16,819
Accounts payable		130,539			71,189
Accrued compensation and related benefits		12,510			7,904
Deferred rent, current portion		661			634
Other current liabilities		11,020			4,515
Total current liabilities		170,248			101,061
Bank borrowings, net of current portion		41,810			50,931
Deferred tax liability		9,607			9,917
Deferred rent and other liabilities		2,408			2,657
Total liabilities		224,073			164,566
Commitments and contingencies (See Note 9)
Stockholders’ equity:
Preferred stock — $0.001 par value, 10,000,000 authorized; none outstanding	—			—
Common stock — $0.001 par value, 90,000,000 authorized; 33,627,343 and 32,956,285 shares issued and outstanding, in 2017 and 2016, respectively		34			33
Additional paid-in capital		186,159			181,781
Common shares held in treasury, at cost, 601,944 shares in 2017 and 2016, respectively		(3,337	)		(3,337	)
Retained earnings		92,273			38,037
Accumulated other comprehensive gain (loss)		1,551			(383	)
Total stockholders’ equity		276,680			216,131
Total liabilities and stockholders’ equity	$	500,753		$	380,697

			Fair Value Measurement at
			Reporting Date Using
Description	September 29, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Other assets:
Interest rate swap	$	28	$	—	$	28	$	—
Forward contracts	$	1,097	$	—	$	1,097	$	—
Other liabilities:
Interest rate swap	$	4	$	—	$	4	$	—
Contingent earn-out liability	$	—	$	—	$	—	$	—

Cash and cash equivalents	$	20.1
Accounts receivable		51.6
Inventories		80.3
Prepaid expenses and other assets		17.3
Property, plant and equipment		52.1
Goodwill		86.1
Purchased intangible assets		124.4
Deferred tax assets		0.8
Operating lease right-of-use assets		27.7
Other non-current assets		2.2
Total assets acquired		462.6
Bank borrowings		(5.0	)
Accounts payable		(30.8	)
Accrued compensation and related benefits		(10.5	)
Other current liabilities		(12.4	)
Deferred tax liabilities		(12.0	)
Operating lease liabilities		(23.8	)
Other liabilities		(4.0	)
Total liabilities assumed		(98.5	)
Noncontrolling interests		(1.2	)
Total consideration transferred	$	362.9

			Purchased
	Useful Life		Intangible Assets
	(In years)		(In millions)
Customer relationships		10	$	73.9
IP Knowhow	10-15			35.5
Trade names		5		9.8
Backlog		1		5.2
Total purchased intangible assets			$	124.4

	June 25,		Valuation	Unobservable
	2021		Techniques	Input	Range/Multiple
(Dollars in millions, except rate/multiple)
Purchase option	$	1.1	Black‑Scholes option-pricing model	Volatility		65.0	%
				Risk free interest rate		0.03	%
				Stock price	$	1.2
				Strike price	$	0.1
Common stock purchase obligation	$	14.0	Discounted cash flow	Revenue multiple	1.3 - 1.5
				EBITDA Multiple	4.5 - 7.4
				Discount rate	15.0% - 20.0%
Pension obligation	$	5.5	Projected unit credit method	Discount rate		2.1	%
				Rate on return		2.5	%
				Salary increase rate		4.0	%

(In millions)	Purchase option		Common stock purchase obligation		Pension obligation
As of December 25, 2020	$	—	$	12.6	$	4.7
Fair value adjustments	—		1.4		0.8
Acquisition of Ham-Let		1.1	—		—
As of June 25, 2021	$	1.1	$	14.0	$	5.5

	Gains (Losses) Recognized in OCI on Derivatives Before Tax Effect (Effective Portion)
	Three Months Ended					Nine Months Ended
	September 29,			September 23,		September 29,		September 23,
	2017			2016		2017		2016
Derivatives in Cash Flow Hedging Relationship
Interest rate swap	$	(11	)	$	27	$	—	$	(101	)
Forward contracts	$	356		$	—	$	1,197	$	—

	Gains Reclassified from AOCI into Income (Effective Portion)
		Three Months Ended					Nine Months Ended
		September 29,			September 23,		September 29,			September 23,
	Income Statement Location	2017			2016		2017			2016
Derivatives in Cash Flow Hedging Relationship
Interest rate swap	Interest and other income (expense), net	$	(6	)	$	20	$	(13	)	$	71
Forward contracts	Cost of goods sold	$	106		$	—	$	106		$	—

	Gains (Losses) Recognized in OCI on Derivatives Before Tax Effect (Effective Portion)
	Three Months Ended				Six Months Ended
	June 25,		June 26,		June 25,			June 26,
(In millions)	2021		2020		2021			2020
Derivatives in Cash Flow Hedging Relationship
Forward contracts	$	0.6	$	—	$	(0.1	)	$	—

	Losses Recognized in Income on Derivatives
		Three Months Ended				Six Months Ended
		June 25,		June 26,		June 25,			June 26,
(In millions)	Income Statement Location	2021		2020		2021			2020
Derivatives Not Designated As Hedging Instruments
Forward contracts	Other income (expense), net	$	-	$	—	$	(11.6	)	$	—

	September 29, 2017						December 30, 2016
			Intangible						Intangible
	Goodwill		Assets		Total		Goodwill		Assets		Total
Carrying amount	$	85,248	$	33,331	$	118,579	$	85,248	$	37,024	$	122,272

	Amortization
	Expense
2017 (remaining in year)	$	1,231
2018		4,582
2019		4,210
2020		3,682
2021		3,554
Thereafter		7,085
Total	$	24,344

Fiscal Year
2017 (remaining in year)	$	1,858
2018		6,767
2019		5,214
2020		4,836
2021		4,344
Thereafter		3,712
Total minimum lease payments	$	26,731

(In millions)	Shares			Aggregate Fair Value
Unvested RSUs, PSUs and RSAs at December 25, 2020		1.7		$	54.1
Granted	0.4
Vested		(0.6	)
Forfeited		(0.1	)
Unvested RSUs, PSUs and RSAs as of June 25, 2021		1.4		$	76.6
Vested and expected to vest RSUs, PSUs and RSAs as of June 25, 2021		1.3		$	67.4

(In millions)	Operating Leases
2021 remaining	$	9.3
2022		17.4
2023		14.4
2024		11.0
2025		8.1
Thereafter		22.3
Total minimum lease payments		82.5
Less: imputed interest		12.2
Lease liability	$	70.3

	Three Months Ended									Six Months Ended
Revenues by Geography	June 25,			June 26,			Percent			June 25,			June 26,			Percent
(Dollars in millions)	2021			2020			Change			2021			2020			Change
United States	$	163.0		$	148.4			9.8	%	$	307.7		$	283.5			8.5	%
International		352.2			196.4			79.3	%		625.1			382.2			63.6	%
Total Revenues	$	515.2		$	344.8			49.4	%	$	932.8		$	665.7			40.1	%
United States as a percentage of total revenues		31.6	%		43.0	%					33.0	%		42.6	%
International as a percentage of total revenues		68.4	%		57.0	%					67.0	%		57.4	%

	Three Months Ended									Six Months Ended
Cost of Revenues by Segment	June 25,			June 26,			Percent			June 25,			June 26,			Percent
(Dollars in millions)	2021			2020			Change			2021			2020			Change
Products	$	367.9		$	229.3			60.4	%	$	651.5		$	444.0			46.7	%
Services		47.4			41.6			13.9	%		94.5			82.1			15.1	%
Total Cost of Revenues	$	415.3		$	270.9			53.3	%	$	746.0		$	526.1			41.8	%
Products as a percentage of total Products revenues		83.1	%		82.5	%					82.7	%		82.6	%
Services as a percentage of total Services revenues		65.2	%		62.2	%					65.3	%		63.9	%

	Three Months Ended									Six Months Ended
Gross Profit by Segment	June 25,			June 26,			Percent			June 25,			June 26,			Percent
(Dollars in millions)	2021			2020			Change			2021			2020			Change
Products	$	74.6		$	48.6			53.5	%	$	136.6		$	93.3			46.4	%
Services		25.3			25.3			0.0	%		50.2			46.3			8.4	%
Gross profit	$	99.9		$	73.9			35.2	%	$	186.8		$	139.6			33.8	%
Gross Margin by Segment
Products		16.9	%		17.5	%					17.3	%		17.4	%
Services		34.8	%		37.8	%					34.7	%		36.1	%
Total Company		19.4	%		21.4	%					20.0	%		21.0	%

	Total		Less than 1 Year		1-3 Years		3-5 Years		More Than 5 Years
(In millions)											Total		Fiscal Year 2021		Fiscal Years 2022 - 2023		Fiscal Years 2024 - 2025		Beyond
Operating leases (1)	$	26,731	$	1,858	$	11,981	$	9,180	$	3,712	$	101.7	$	10.2	$	36.1	$	23.4	$	32.0
Borrowing arrangements (2)		57,532		6,921		50,601		10	—			610.0		21.4		29.0		559.6		—
PO commitments		169,219		169,219	—		—		—
Common stock purchase obligation (3)												14.0		—		14.0		—		—
Purchase order commitments (4)												405.1		405.1		—		—		—
Total	$	253,482	$	177,998	$	62,582	$	9,190	$	3,712	$	1,130.8	$	436.7	$	79.1	$	583.0	$	32.0

Exhibit Number		Description
~~10.1~~ 31.1	~~Amendment to Offer Letter and change in Control Severance Agreement by and between Jim Scholhamer and Ultra Clean Holdings, Inc.(1)~~
~~31.1~~	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2		Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1		Certification of the Chief Executive Officer and the 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		Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH		Inline XBRL Taxonomy Extension Schema Document
101.CAL		Inline XBRL Taxonomy Calculation Linkbase Document
101.DEF		Inline XBRL Taxonomy Definition Linkbase Document
101.LAB		Inline XBRL Taxonomy Label Linkbase Document
101.PRE		Inline XBRL Taxonomy Extension Presentation Linkbase Document

Exhibit Number	~~Description~~
~~10.1~~	~~Amendment to Offer Letter and change in Control Severance Agreement by and between Jim Scholhamer and Ultra Clean Holdings, Inc.(1)~~
~~31.1~~	~~Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.~~
~~31.2~~	~~Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.~~
~~32.1~~	~~Certification of the Chief Executive Officer and the 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 Calculation Linkbase Document~~
~~101.DEF~~	~~XBRL Taxonomy Definition Linkbase Document~~
~~101.LAB~~	~~XBRL Taxonomy Label Linkbase Document~~
~~101.PRE~~	~~XBRL Taxonomy Extension Presentation Linkbase Document~~

	ULTRA CLEAN HOLDINGS, INC.
	(Registrant)
Date: ~~November 8, 2017~~August 4, 2021

	By:	/S/ JAMES P. SCHOLHAMER
	Name:	James P. Scholhamer
	Title:	Chief Executive Officer
		(Principal Executive Officer and duly authorized signatory)

Date: ~~November 8, 2017~~August 4, 2021

	By:	/S/ SHERI SAVAGE
	Name:	Sheri Savage
	Title:	Chief Financial Officer ~~Senior Vice President and Secretary~~
		(Principal Financial ~~and Accounting~~ Officer and duly authorized signatory)