UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

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

For the Quarterly Period ended September 30, 2003
or

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

For the transition period from ______ to ______

000-31311
(Commission File Number)

PDF SOLUTIONS, INC.

(Exact name of Registrant as specified in its charter)

Delaware (State or other jurisdiction of incorporation or organization)	25-1701361 (I.R.S. Employer Identification No.)
333 West San Carlos Street, Suite 700 San Jose, California (Address of Registrant’s principal executive offices)	95110 (Zip Code)

(408) 280-7900
(Registrant’s telephone number, including area code)

     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 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 [X]  No [   ]

     Indicate by check mark whether the registrant is an accelerated filer (as defined in Exchange Act Rule 12b-2)

Yes [X]  No [   ]

     The number of shares outstanding of the Registrant’s Common Stock as of November 10, 2003 was 23,301,635.

TABLE OF CONTENTS

PART I — FINANCIAL INFORMATION
	Item 1. Financial Statements
		UNAUDITED CONSOLIDATED BALANCE SHEETS
		UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS
		UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS
		NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS
	Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations
	Item 3. Quantitative and Qualitative Disclosures About Market Risk
	Item 4. Controls and Procedures
PART II — OTHER INFORMATION
	Item 1. Legal Proceedings
	Item 2. Changes in Securities and Use of Proceeds
	Item 3. Defaults on Senior Securities
	Item 4. Submission of Matters to a Vote of Security Holders
	Item 5. Other Information
	Item 6. Exhibits and Reports on Form 8-K
SIGNATURES
INDEX TO EXHIBITS
EXHIBIT 10.24
EXHIBIT 31.1
EXHIBIT 31.2
EXHIBIT 32.1
EXHIBIT 32.2

PART I — FINANCIAL INFORMATION

Item 1. Financial Statements

PDF SOLUTIONS, INC.
UNAUDITED CONSOLIDATED BALANCE SHEETS
(In thousands, except per share data)

			September 30,			December 31,
			2003			2002
			(Unaudited)
ASSETS
Current assets:
	Cash and cash equivalents		$	46,567		$	71,490
	Accounts receivable, net of allowance of $504 in 2003 and 2002			9,701			7,924
	Deferred tax asset			1,386			2,413
	Prepaid expenses and other current assets			2,618			1,993
		Total current assets		60,272			83,820
Property and equipment, net				4,024			3,533
Goodwill				40,721			662
Intangible assets, net				24,666			220
Deferred tax asset				3,875			1,053
Other assets				881			511
		Total assets	$	134,439		$	89,799
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
	Accounts payable		$	1,429		$	499
	Accrued compensation and related benefits			2,238			1,143
	Other accrued liabilities			2,433			1,669
	Other acquisition obligations			7,646			—
	Taxes payable			2,990			1,838
	Deferred revenues			2,256			4,496
	Billings in excess of recognized revenue			333			606
		Total current liabilities		19,325			10,251
Long-term liabilities				296			54
Deferred tax liabilities				8,985			752
		Total liabilities		28,606			11,057
Stockholders’ equity:
	Preferred stock, $0.00015 par value, 5,000 shares authorized; no shares issued and outstanding; in 2003 and 2002			—			—
	Common stock, $0.00015 par value, 75,000 shares authorized; shares issued and outstanding: 25,281 in 2003 and 23,130 in 2002			4			3
	Additional paid-in-capital			128,685			99,884
	Deferred stock-based compensation			(1,098	)		(1,340	)
	Notes receivable from stockholders			(3,755	)		(4,998	)
	Accumulated deficit			(18,086	)		(14,845	)
	Accumulated other comprehensive income			83			38
		Total stockholders’ equity		105,833			78,742
		Total liabilities and stockholders’ equity	$	134,439		$	89,799

See notes to unaudited consolidated financial statements.

PDF SOLUTIONS, INC.
UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands, except per share data)

				Three Months Ended					Nine Months Ended
				September 30,			September 30,		September 30,			September 30,
				2003			2002		2003			2002
Revenue:
	Design-to-silicon-yield solutions			$	9,033		$	8,213	$	25,175		$	26,098
	Gain share				2,267			2,824		5,282			8,632
			Total revenue		11,300			11,037		30,457			34,730
Cost and expenses:
	Cost of design-to-silicon-yield solutions:
		Direct cost of design-to-silicon-yield solutions			3,768			3,650		10,726			11,624
		Amortization of acquired core technology			652			41		818			123
	Research and development				4,421			3,989		13,123			11,143
	Selling, general and administrative				3,106			2,630		8,720			7,716
	Stock-based compensation amortization*				366			640		1,344			2,198
	Amortization of other acquired intangible assets				137			—		137			—
	Write-off of in-process research and development				800			—		800			—
			Total costs and expenses		13,250			10,950		35,668			32,804
Income (loss) from operations					(1,950	)		87		(5,211	)		1,926
Interest and other income					278			443		998			1,140
Income (loss) before taxes					(1,672	)		530		(4,213	)		3,066
Tax (benefit) provision					(441	)		345		(972	)		1,736
Net income (loss)				$	(1,231	)	$	185	$	(3,241	)	$	1,330
Net income (loss) per share:
	Basic			$	(0.05	)	$	0.01	$	(0.14	)	$	0.06
	Diluted			$	(0.05	)	$	0.01	$	(0.14	)	$	0.06
Weighted average common shares:
	Basic				23,002			22,127		22,701			21,860
	Diluted				23,002			23,133		22,701			23,172
* Stock-based compensation amortization:
	Cost of design-to-silicon yield solutions			$	77		$	186	$	293		$	672
	Research and development				222			307		785			1,111
	Selling, general and administrative				67			147		266			415
				$	366		$	640	$	1,344		$	2,198

See notes to unaudited consolidated financial statements

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PDF SOLUTIONS, INC.
UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)

					Nine Months Ended
					September 30, 2003			September 30, 2002
Operating activities:
	Net income (loss)				$	(3,241	)	$	1,330
	Adjustments to reconcile net income (loss) to net cash used in operating activities:
		Depreciation and amortization				1,520			1,100
		Stock-based compensation amortization				1,344			2,198
		Amortization of acquired intangible assets				955			123
		Write-off of in-process research and development				800			—
		Changes in assets and liabilities:
			Accounts receivable			(1,236	)		(1,229	)
			Prepaid expenses and other assets			(902	)		(1,522	)
			Accounts payable			632			(14	)
			Accrued compensation and related benefits			1,095			(2,202	)
			Other accrued liabilities			(573	)		(355	)
			Taxes payable			447			1,611
			Deferred revenues			(3,216	)		1,708
			Billings in excess of recognized revenue			(273	)		(99	)
			Deferred taxes			(2,271	)		(282	)
				Net cash (used in) provided by operating activities		(4,919	)		2,367
Investing activities:
	Purchases of property and equipment					(1,698	)		(1,843	)
	Businesses acquired in purchase transactions, net of cash acquired					(20,520	)		—
				Net cash used in investing activities		(22,218	)		(1,843	)
Financing activities:
	Exercise of stock options					406			179
	Proceeds from employee stock purchase plan					543			889
	Collection of notes receivable from stockholders					1,232			807
	Principal payments on long-term debt and capital lease obligations					(12	)		(20	)
				Net cash provided by financing activities		2,169			1,855
Effect of exchange rate changes on cash						45			36
Net decrease in cash and cash equivalents						(24,923	)		2,415
Cash and cash equivalents, beginning of period						71,490			70,835
Cash and cash equivalents, end of period					$	46,567		$	73,250
Supplemental disclosure of cash flow information:
	Cash paid during the period for:
			Taxes		$	720		$	560
			Interest		$	2		$	3

See notes to unaudited consolidated financial statements.

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PDF SOLUTIONS, INC.
NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

1. BASIS OF PRESENTATION

     The interim unaudited consolidated financial statements included herein have been prepared by PDF Solutions, Inc., (the “Company”), without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) specifically instructions to Form 10-Q and Article 10 of Regulation S-X. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted. The unaudited interim consolidated financial statements reflect, in the opinion of management, all adjustments necessary, (consisting only of normal recurring adjustments) to present a fair statement of results for the interim periods presented. The operating results for any interim period are not necessarily indicative of the results that may be expected for other interim periods or the full fiscal year. The accompanying unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2002.

     The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses. A significant portion of the Company’s revenues require estimates in regards to total costs which may be incurred and revenues earned. Actual results could differ from these estimates.

     The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries after the elimination of all significant intercompany balances and transactions. Certain amounts from prior years have been reclassified to conform to current-year presentation. These reclassifications did not change previously reported total assets, liabilities, stockholders’ equity or net income.

Stock Based Compensation

     The Company accounts for stock-based compensation in accordance with the provisions of Accounting Principles Board Opinion No. 25 “Accounting for Stock Issued to Employees” (“APB No. 25”), and complies with the disclosure provisions of Statement of Financial Accounting Standards No. 123 (“SFAS No. 123”) as amended by SFAS 148, “Accounting for Stock-Based Compensation — Transition and Disclosures”. Deferred compensation recognized under APB No. 25 is amortized to expense using the graded vesting method. The Company accounts for stock options and warrants issued to non-employees in accordance with the provisions of SFAS No. 123 and its related interpretations under the fair value based method.

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          The Company adopted the disclosure-only provisions of SFAS No. 123, and accordingly, no expense has been recognized for options granted to employees under the various stock plans. The Company amortizes deferred stock-based compensation on the graded vesting method over the vesting periods of the applicable stock purchase rights and stock options, generally four years. The graded vesting method provides for vesting of portions of the overall awards at interim dates and results in greater vesting in earlier years than the straight-line method. Had compensation expense been determined for employee awards based on the fair value at the grant date for the awards, consistent with the provisions of SFAS No. 123, the Company’s pro forma net income (loss) and pro forma net income (loss) per share would be as follows (in thousands, except per share data):

				Three Months						Nine Months
				Ended September 30,						Ended September 30,
				2003			2002			2003			2002
Net income (loss) as reported:				$	(1,231	)	$	185		$	(3,241	)	$	1,330
	Add: stock-based employee compensation expense included in reported net income (loss) under APB 25				366			640			1,117			2,198
	Deduct: total employee stock-based compensation determined under fair value based method for all awards, net of related tax effects				(3,140	)		(2,901	)		(8,036	)		(7,914	)
	Pro forma net loss			$	(4,005	)	$	(2,076	)	$	(10,160	)	$	(4,386	)
	Basic and diluted net income (loss) per share:
		As reported:
			Basic	$	(0.05	)	$	0.01		$	(0.14	)	$	0.06
			Diluted	$	(0.05	)	$	0.01		$	(0.14	)	$	0.06
		Pro forma basic and diluted:
			Basic	$	(0.17	)	$	(0.09	)	$	(0.45	)	$	(0.20	)
			Diluted	$	(0.17	)	$	(0.09	)	$	(0.45	)	$	(0.20	)

     During the first quarter of 2003, the Company recorded $227,000 in compensation expense for the fair value of options granted to two non-employees. The 45,000 common shares under the 2001 Stock Plan were granted at an exercise price of $7.59 per share, the fair market value per share on the grant date were fully vested at the date of grant and contained restrictions on when shares could be sold.

2. ACQUISITIONS

IDS Software Systems

     On September 24, 2003, the Company completed its acquisition of IDS Software Systems, Inc (“IDS”). IDS, a privately held company, developed and licensed yield management software applications and services dedicated to the semiconductor industry to enable customers to track, and identify areas for yield improvement. The acquisition of IDS will provide the Company’s customers with greater capabilities for managing product yield improvement through the use of the acquired technology and services. The aggregate purchase price was $51.0 million which included the issuance of cash of $23.0 million, the issuance of 2.0 million shares of PDF common stock valued at $25.0 million, the assumption of stock options valued at $1.7 million and acquisition costs of $1.3 million. The fair value of the Company’s common stock was determined based on the average closing price per share of the Company’s common stock over a 5-day period beginning two trading days before and ending two trading days after the amended terms of the acquisition were agreed to and announced (September 3, 2003). The fair values of the options assumed were calculated as of September 24, 2003, based on the Black-Scholes options pricing model. The acquisition was accounted for using the purchase method of accounting in accordance with Statement of Financial Accounting Standards (“SFAS”) No 141, Business Combinations, and accordingly the Company’s unaudited consolidated financial statements from September 24, 2003 include the impact of the acquisition.

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          The allocation of the purchase price for this acquisition, as of the date of the acquisition, is as follows (in thousands, except amortization life):

			Amortization Life
Allocation of purchase price:			(Yrs).		Amount
Fair value of tangible assets						950
		Brand name		4		2,000
		Contract backlog		1		700
		Backlog renewals		4		900
		Customer relationships		4		800
		Non-compete covenant		4		60
		Core technology		4		16,800
		In-process research and development		N/A		800
		Goodwill		N/A		41,347
	Total assets acquired					64,357
Deferred tax liability						(8,708	)
Accrued liabilities						(3,032	)
Deferred revenue						(976	)
Accounts payable						(629	)
	Total liabilities assumed					(13,345	)
Total consideration, net						51,012

     The acquisition was accounted for as a purchase transaction, and accordingly, the assets and liabilities of IDS were recorded at their estimated fair values at the date of the acquisition. With the exception of the goodwill and acquired in-process research and development (“IPR&D”), the identified intangible assets will be amortized on a straight-line basis over their estimated useful lives, with a weighted average life of approximately four years. The acquired IPR&D technology was immediately expensed because technological feasibility had not been established and no future alternative use exists. In assessing IDS’s IPR&D projects, the key characteristics of the products under development were considered as well as future prospects, the rate at which technology changes, product life cycles, and the projects’ stages of development. The IPR&D technology write-off is included as a component of operating expenses in the unaudited consolidated statement of operations. The fair value of IPR&D, as well as the fair value of the identifiable intangible assets, was determined, in part, by an independent third party appraiser through established valuation techniques.

     The acquisition of IDS was structured as a tax-free acquisition. Therefore, the difference between the recognized fair values of the acquired net assets and their historical tax basis are not deductible for tax purposes. A deferred tax liability has been recognized for the difference between the assigned fair values of intangible assets for book purposes and the tax basis of such assets.

     The following unaudited pro forma consolidated financial data represents the combined results of operations as if IDS had been combined with the Company at the beginning of the respective period. This pro forma financial data includes the straight line amortization of intangibles over their respective estimated useful lives and excludes the write-off of IPR&D (in thousands):

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	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2003			2002		2003			2002
Revenue	$	16,500		$	15,833	$	35,657		$	42,481
Pro forma Net income (loss)		(2,376	)		2,094		(4,540	)		1,456
Pro forma Net income (loss) per share - basic	$	(0.10	)	$	0.09	$	(0.18	)	$	0.06
Pro forma Net income (loss) per share - diluted	$	(0.10	)	$	0.08	$	(0.18	)	$	0.06

     These results do not purport to be indicative of what would have occurred had the acquisition been made as of the beginning of the respective periods or the result of operations which may occur in future periods.

WaferYield

     On May 31, 2003 the Company acquired certain assets and liabilities of WaferYield, Inc., (“WaferYield”) a privately held company, which primarily included WaferYield’s proprietary shot map WAMA™ technology and related business. The WAMA product offering is designed to optimize semiconductor wafer shot maps to help semiconductor companies achieve greater yield and net die per wafer, higher stepper throughput and reduced probe test cost. This acquisition adds to the Company’s product offering and its capabilities in enabling semiconductor companies to improve yield and performance of ICs. The aggregate purchase price was $4.1 million, which included cash payments of $2.6 million and the recognition of $1.5 million in other liabilities associated with future payments that are contingent upon the attainment of certain revenue performance objectives. There were no other assets or liabilities assumed in connection with the acquisition. The agreement also contains additional payments in the event the Company achieves further performance objectives as specified in the agreement, up to an additional payment of $3.5 million. Any additional payments made as a result of achieving such operating levels, which exceed amounts currently accrued, will be accounted for as goodwill in relation to the purchase. The entire purchase price has been allocated to core technology which is being amortized over an estimated useful life of 4 years. The acquisition has been accounted for using the purchase method of accounting and accordingly, the Company’s consolidated financial statements from May 31, 2003 include the impact of the acquisition. Proforma results of operations have not been presented because the effect of the acquisition was not material to the Company.

3. RECENT ACCOUNTING PRONOUNCEMENTS

     In July 2002, the Financial Accounting Standards Board (“FASB”) issued Statements of Financial Accounting Standards (“SFAS”) No. 146, “Accounting for Costs Associated with Exit or Disposal Activities.” SFAS No. 146 addresses financial accounting and reporting for costs associated with exit or disposal activities and nullifies Emerging Issues Task Force (“EITF”) Issue No. 94-3, “Liability Recognition for Certain Employee Termination Benefits and Other Costs to Exit an Activity (Including Certain Costs Incurred in a Restructuring)” and must be applied beginning January 1, 2003. SFAS No. 146 requires that a liability for a cost associated with an exit or disposal activity be recognized when the liability is incurred rather than when the exit or disposal plan is approved. The Company adopted SFAS No. 146 on January 1, 2003. The adoption of this statement did not have an effect on the financial position and operating results of the Company.

     In November 2002, the FASB issued FASB Interpretation (“FIN”) No. 45, “Guarantor’s Accounting and Disclosure Requirements for Guarantees, Including Indirect Guarantees of Indebtedness of Others”. FIN 45 requires companies to recognize, at the inception of a guarantee, a liability for the fair value of the obligation undertaken in issuing the guarantee. Guarantees in existence at December 31, 2002 are grandfathered for the purposes of recognition and would only need to be disclosed. The Company adopted FIN 45 on January 1, 2003. The adoption of this statement did not have an effect on the Company’s financial position and operating results.

     The Company generally provides a warranty to its customers that its software will perform substantially in accordance with documentation typically for a period of 90 days following delivery of its products. The Company also indemnifies certain customers from third-party claims of intellectual property infringement relating to the use of its products. Historically, costs related to these guarantees have not been significant. The Company is unable to estimate the maximum potential impact of these guarantees on its future results of operations.

     In December 2002, the EITF reached a consensus on EITF 00-21, “Revenue Arrangements with Multiple Deliverables”. This issue addresses certain aspects of the accounting by a vendor for arrangements under which it will perform multiple revenue-generating activities. In some arrangements, the different revenue-generating activities (deliverables) are sufficiently separable and there exists sufficient evidence of their fair values to separately account for some or all of the deliverables (that is, there are separate units of accounting). In other arrangements, some or all of the deliverables are not independently functional, or there is not sufficient evidence of

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their fair values to account for them separately. This issue addresses when and, if so, how an arrangement involving multiple deliverables should be divided into separate units of accounting. This issue does not change otherwise applicable revenue recognition criteria. The guidance in this issue is effective for revenue arrangements entered into in fiscal periods beginning after June 15, 2003. The adoption of EITF 00-21 did not have an effect on the Company’s financial position and results of operations.

     In December 2002, the FASB issued SFAS No. 148, “Accounting for Stock-Based Compensation — Transition and Disclosure, an amendment to FASB Statement 123”. SFAS No. 148 provides alternative methods of transition for a voluntary change to the fair value based method of accounting of stock-based employee compensation. In addition, SFAS No. 148 amends the disclosure requirements of SFAS No. 123, “Accounting for Stock-Based Compensation”, to require prominent disclosures in both annual and interim financial statements about the method of accounting for stock-based employee compensation and the effect of the method used on reported results. The Company adopted the disclosure provisions of SFAS No. 148 effective December 31, 2002.

     In January 2003, the FASB issued Interpretation No. 46 (FIN 46), Consolidation of Variable Interest Entities. FIN 46 amended ARB 51, Consolidated Financial Statements, and established standards for determining under what circumstances a variable interest entity (VIE) should be consolidated with its primary beneficiary. FIN 46 also requires disclosures about VIE’s that the company is not required to consolidate, but in which it has a significant variable interest. We do not expect the adoption of FIN 46 will have a material effect on the Company’s financial position and results of operations.

4. ACCOUNTS RECEIVABLE

     Accounts receivable include amounts that are unbilled at the end of the period. Unbilled accounts receivable are determined on an individual contract basis and were approximately $1.3 million and $1.0 million at September 30, 2003 and December 31, 2002, respectively.

5. NET INCOME (LOSS) PER SHARE

     Basic net income (loss) per share is computed by dividing net income (loss) by the weighted-average common shares outstanding for the period (excluding shares subject to repurchase). Diluted net income (loss) per share reflects the weighted-average common shares outstanding plus the potential effect of dilutive securities which are convertible into common shares (using the treasury stock method), except in cases where the effect would be anti-dilutive. The following is a reconciliation of the numerators and denominators used in computing basic and diluted net income (loss) per share (in thousands):

		Three Months						Nine Months
		Ended September 30,						Ended September 30,
		2003			2002			2003			2002
Net income (loss)		$	(1,231	)	$	185		$	(3,241	)	$	1,330
Shares:
	Weighted average common shares outstanding		23,394			23,047			23,218			22,966
	Weighted average common shares outstanding subject to repurchase		(392	)		(920	)		(517	)		(1,106	)
Shares used in computation - basic			23,002			22,127			22,701			21,860
Dilutive common equivalent shares:
	Weighted average common shares outstanding subject to repurchase		—			920			—			1,106
	Weighted average stock options outstanding		—			86			—			206
Shares used in computation – diluted			23,002			23,133			22,701			23,172
Net income (loss) per share – basic		$	(0.05	)	$	0.01		$	(0.14	)	$	0.06
Net income (loss) per share - diluted		$	(0.05	)	$	0.01		$	(0.14	)	$	0.06

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     For the three month period ended September 30, 2002, the calculation of diluted net income per share does not include 250,000 outstanding common stock options as the effect would be anti-dilutive for the period presented. For the three and nine month periods ended September 30, 2003, the calculation of diluted net loss per share does not include, respectively 1.0 million and 590,000 outstanding common stock options and 392,000 and 579,000 shares of common stock subject to repurchase as the effect would be anti-dilutive for the periods presented.

6. COMPREHENSIVE INCOME (LOSS)

     The components of comprehensive income (loss) are as follows (in thousands):

	Three Months						Nine Months
	Ended September 30,						Ended September 30,
	2003			2002			2003			2002
Net income (loss)	$	(1,231	)	$	185		$	(3,241	)	$	1,330
Foreign currency translation adjustments		17			(1	)		45			36
Comprehensive income (loss)	$	(1,214	)	$	184		$	(3,196	)	$	1,366

7. GOODWILL AND PURCHASED INTANGIBLE ASSETS

     On January 1, 2002, the Company adopted SFAS No. 142, Goodwill and Other Intangible Assets (“SFAS No. 142”). SFAS No. 142 requires goodwill to be tested for impairment under certain circumstances, written down when impaired, and requires purchased intangible assets other than goodwill to be amortized over their useful lives unless these lives are determined to be indefinite. Upon the adoption of SFAS No. 142 the Company ceased amortization of goodwill with a net book value totaling $662,000, which included $192,000 of acquired workforce intangibles, net of related deferred tax liabilities which were reclassified to goodwill pursuant to the requirements of SFAS No. 142.

     The following table provides information relating to the intangible assets and goodwill contained within the Company’s consolidated balance sheets as of September 30, 2003 and December 31, 2002 (in thousands):

			September 30, 2003							December 31, 2002
								Net							Net
					Accumulated			carrying				Accumulated			carrying
			Cost		Amortization			Amount		Cost		Amortization			Amount
Goodwill			$	41,283	$	(562	)	$	40,721	$	1,224	$	(562	)	$	662
Acquired identifiable intangibles:
	Acquired technology		$	21,602	$	(1,259	)	$	20,343	$	662	$	(442	)	$	220
	Brand name			2,000		(42	)		1,958		—		—			—
	Other acquired intangibles			2,460		(95	)		2,365		—		—			—
		Total	$	26,062	$	(1,396	)	$	24,666	$	662	$	(442	)	$	220

     As required by SFAS No. 142, the Company performed its transitional impairment test of goodwill as of January 1, 2002, at which time the Company determined that the carrying value of goodwill had not been impaired. SFAS No. 142 also requires that goodwill be tested for impairment on an annual basis and more frequently in certain circumstances. Accordingly, the Company has selected the three-month period ending December 31, to perform the annual testing requirements. During the three-month period ending December 31, 2002, the Company completed its annual testing requirements and determined that the carrying value of goodwill had not been impaired.

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     The Company expects that annual amortization of acquired intangible assets to be as follows (in thousands):

December 31,:
	2003 (remaining three months)	$	1,760
	2004		6,701
	2005		6,175
	2006		6,175
	2007		3,855
Total amortization expense		$	24,666

8. CUSTOMER AND GEOGRAPHIC INFORMATION

     The Company operates in one segment. The Company had revenues from individual customers in excess of 10% of total revenues as follows:

	Three Months						Nine Months
	Ended September 30,						Ended September 30,
Customer	2003			2002			2003			2002
A		26	%		27	%		25	%		24	%
C		9	%		21	%		13	%		16	%
G		12	%		25	%		14	%		23	%
H		1	%		4	%		11	%		4	%
I		18	%		—			13	%		—

          The Company had gross accounts receivable from the following individual customers in excess of 10% of gross accounts receivable as follows:

Customer	September 30, 2003			December 31, 2002
A		31	%		31	%
C		8	%		11	%
F		9	%		19	%
K		—			11	%
M		15	%		—

     Revenues from customers by geographic area are as follows (in thousands):

	Three Months				Nine Months
	Ended September 30,				Ended September 30,
	2003		2002		2003		2002
Asia	$	8,376	$	8,167	$	21,719	$	24,352
United States		1,895		1,260		6,218		5,035
Europe		1,029		1,610		2,520		5,343

     As of September 30, 2003 and December 31, 2002, long-lived assets related to PDF Solutions GmbH (formerly AISS), located in Germany, totaled $1.0 and $1.1 million, respectively, of which $759,000 and $882,000, respectively, relates to acquired intangibles and goodwill. The majority of the Company’s remaining long-lived assets are in the United States.

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9. LITIGATION

     In May 2001 the Company was named as a defendant in a lawsuit claiming, among other things, that it misappropriated trade secrets in connection with hiring an employee. This litigation was settled by all parties in the second quarter of 2002. All expenses related to the lawsuit have been reflected in the consolidated financial statements in 2002.

10. STOCK REPURCHASE PROGRAM

     In February 2003, the Board of Directors approved a program to repurchase up to $10.0 million of the Company’s common stock in the open market. As of September 30, 2003, no shares have been repurchased under this program.

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

Forward-Looking Statements

     The following discussion of our financial condition and results of operations contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These statements relate to future events or our future financial performance. In some cases, you can identify forward-looking statements by terminology such as may, will, should, expect, plan, anticipate, believe, estimate, predict, potential or continue, the negative effect of terms like these or other comparable terminology. These statements are only predictions. These statements involve known and unknown risks and uncertainties and other factors that may cause actual events or results to differ materially. All forward-looking statements included in this document are based on information available to us on the date of filing, and we assume no obligation to update any such forward-looking statements. In evaluating these statements, you should specifically consider various factors, including the risks outlined under the caption “Factors Which May Affect Future Results” set forth at the end of this Item 2 and the Risk Factors set forth in our Annual Report on Form 10-K for the year ended December 31, 2002. We caution investors that our business and financial performance are subject to substantial risks and uncertainties.

Overview

     Our technologies and services enable semiconductor companies to improve yield and performance of integrated circuits, or ICs, by integrating the design and manufacturing processes. We believe that our solutions improve a semiconductor company’s time to market, the rate at which yield improves and product profitability. Our solutions combine proprietary manufacturing process simulation software, yield and performance modeling software, test chips, a proprietary electrical wafer test system, yield and performance enhancement methodologies, and professional services. The result of implementing our solutions is the creation of value that can be measured based on improvements to our customers’ actual yield. We align our financial interests with the yield and performance improvement realized by our customers and receive revenue based on this value. To date, we have sold our technologies and services to semiconductor companies including leading integrated device manufacturers, fabless semiconductor companies and foundries.

Critical Accounting Policies

     General

     Our discussion and analysis of our financial condition and results of operations are based on our consolidated financial statements, which have been prepared in conformity with accounting principles generally accepted in the United States of America. Our preparation of these consolidated financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenues and expenses during the reporting periods. We based our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. The most significant estimates and assumptions relate to revenue recognition, software development costs, recoverability of goodwill and acquired intangible assets, estimated useful lives of acquired intangibles and the realization of deferred tax assets. Actual amounts may differ from such estimates under different assumptions or conditions. The following summarizes our critical accounting policies and significant estimates used in preparing our consolidated financial statements:

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     Revenue Recognition

     We derive revenue from two sources: Design-to-Silicon-Yield solutions and gain share. We recognize revenue in accordance with the provisions of American Institute of Certified Public Accountants Statement of Position (SOP) 97-2, “Software Revenue Recognition”, as amended, and SOP 81-1, “Accounting for Performance of Construction-Type and Certain Production-Type Contracts”.

      Design-to-Silicon-Yield Solutions — Design-to-Silicon-Yield solutions revenue is derived from solution implementations, software licenses and software support and maintenance. Revenue recognition for each element of Design-to-Silicon Yield solutions is as follows:

     Solution Implementations — Our solution implementations generate a significant portion of revenue from fixed-price contracts delivered over a specific period of time. These contracts require the accurate estimation of the cost to perform obligations and the overall scope of each engagement. Revenue under contracts for solution implementation services is recognized as the services are performed using the cost-to-cost percentage of completion method of accounting. Losses on solution implementation contracts are recognized when determined. Revisions in profit estimates are reflected in the period in which the conditions that require the revisions become known and can be estimated. If we do not accurately estimate the resources required or the scope of work to be performed, or do not manage the projects properly within the planned period of time or satisfy our obligations under contracts, resulting contract margins could be materially different than those anticipated when the contract was executed. Any such reductions in contract margin could have a material negative impact on our operating results.

     Software Licenses — We have entered into a few multi-year time-based licenses, generally for terms of up to three years. Revenue under arrangements which require us to provide support and maintenance over a period of time, where vendor-specific objective evidence of fair value does not exist to allocate a portion of the total fee to the undelivered elements, are recognized ratably over the term of the agreement. No revenue under arrangements with extended payment terms has been recognized in excess of amounts due.

     Other license fees are recognized on the residual value method: (i) when an agreement has been signed, the software has been delivered, the license fee is fixed or determinable and collection of the fee is probable or (ii) as a component of a related solution implementation contract.

     Software Support and Maintenance — Amounts allocated to undelivered support and maintenance are based on vendor specific objective evidence of fair value and generally negotiated renewal rates. Revenue from allocated support and maintenance and renewals is recognized ratably over the term of the support and maintenance contract, which is generally one year.

     Gain Share — Gain share revenue represents profit sharing and performance incentives earned based upon our customers reaching certain defined operational levels. Upon achieving such operational levels, we receive either a fixed fee and/or royalties based on the units sold by the customer. Due to the uncertainties surrounding attainment of such operational levels, we recognize gain share revenue (to the extent of completion of the related solution implementation contract) upon receipt of performance reports or other related information from our customers supporting the determination of amounts and probability of collection. Our continued receipt of gain share revenue is dependent on many factors which are outside our control, including among others, continued production of the related ICs by our customers, sustained yield improvements by our customers and our ability to enter into new Design-to-Silicon-Yield solutions contracts containing gain share provisions.

     Software Development Costs

     Costs for the development of new software products and substantial enhancements to existing software products are expensed as incurred until technological feasibility has been established, at which time any additional costs would be capitalized in accordance with Statement of Financial Accounting Standards (“SFAS”) No. 86, “Computer Software to be Sold, Leased or Otherwise Marketed”. Because we believe our current process for developing software is essentially completed concurrently with the establishment of technological feasibility, no costs have been capitalized to date.

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     Goodwill and Acquired Intangible Assets

     As of September 30, 2003, we had $65.4 million of goodwill and intangible assets. In assessing the recoverability of our goodwill and intangible assets, we must make assumptions regarding estimated future cash flows and other factors. If these estimates or their related assumptions change in the future, we may be required to record impairment charges for these assets. On January 1, 2002 we adopted SFAS No. 142, “Goodwill and Other Intangible Assets”, and have performed our transition impairment test of goodwill as of January 1, 2002 which did not indicate any impairment. SFAS No. 142 also requires that goodwill be tested for impairment on an annual basis and more frequently in certain circumstances. We have selected the three month period ending December 31 to perform the annual testing requirements. During the three month period ending December 31, 2002, we completed our annual testing requirements and determined that the carrying value of goodwill had not been impaired.

     We are currently amortizing our acquired intangible assets over estimated useful lives of periods ranging from 1 to 4 years, which is based on our estimated period of benefit for such assets. However, a decrease in the estimated useful lives of such assets will cause additional amortization expense or an impairment of such asset in future periods.

     Realization of Deferred Tax Assets

     Realization of deferred tax assets is dependent on our ability to generate future taxable income and utilize tax planning strategies. We have recorded a deferred tax asset to the amount that is more likely than not to be realized based on current estimations and assumptions. We evaluate the valuation allowance on a quarterly basis. Any resulting changes to the valuation allowance will result in an adjustment to income in the period the determination is made.

     In connection with our acquisition of IDS Software Systems, Inc. (“IDS”) we recorded deferred tax liabilities of $8.7 million associated with our purchase of certain identifiable intangibles for which we did not have a tax basis in.

Results of Operations

     We have historically experienced fluctuations from period to period. We expect these fluctuations to continue. Therefore, historical results are not indicative of future results.

Comparison of Three and Nine Months Ended September 30, 2003 and 2002

Revenues

     Total revenue for the three months ended September 30, 2003 was $11.3 million, compared with $11.0 million for the three months ended September 30, 2002, an increase of 2%. Total revenue for the nine months ended September 30, 2003 was $30.5 million, compared with $34.7 million for the nine months ended September 30, 2002, a decrease of 12%.

     Design-to-Silicon-Yield Solutions. Design-to-Silicon-Yield solutions revenue for the three months ended September 30, 2003 was $9.0 million, compared with $8.2 million for the three months ended September 30, 2002, an increase of 10%. Design-to-Silicon-Yield solutions revenue for the nine months ended September 30, 2003 was $25.2 million, compared with $26.1 million for the nine months ended September 30, 2002, a decrease of 4%. The increase in the three months ended September 30, 2003 was due to an increase in the number of solution implementations. The decrease in the nine months ended September 30, 2003 was attributable to the general weakness in the semiconductor industry, which attributed to fewer system implementations with a lower average contract value per implementation.

     Gain Share. Gain share revenue for the three months ended September 30, 2003 was $2.3 million, compared with $2.8 million for the three months ended September 30, 2002, a decrease of 20%. Gain share revenue for the nine months ended September 30, 2003 was $5.3 million, compared with $8.6 million for the nine months ended September 30, 2002, a decrease of 39%. The decreases for the three and nine months ended September 30, 2003 were attributable to lower production volumes at leading edge process nodes and fewer contracts generating gain share.

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Costs and Expenses

Cost of Design-to-Silicon-Yield Solutions:

Direct Cost of Design-to-Silicon-Yield Solutions. Direct cost of Design-to-Silicon-Yield solutions for the three months ended September 30, 2003 was $3.8 million, compared with $3.6 million for the three months ended September 30, 2002, an increase of 3%. Direct cost of Design-to-Silicon-Yield solutions for the nine months ended September 30, 2002 was $10.7 million, compared with $11.6 million for the nine months ended September 30, 2002, a decrease of 8%. The absolute dollar increase in the three-month period was primarily due to an increase in the number of solution implementations. The absolute dollar decrease in the nine-month period was primarily due to a decrease in the number of solution implementations along with a decrease in the average contract value of those solution implementations. As a percentage of Design-to-Silicon-Yield solutions revenue, direct cost of Design-to-Silicon-Yield solutions for the three months ended September 30, 2003 was 42%, compared with 44% for the three months ended September 30, 2002. As a percentage of Design-to-Silicon-Yield solutions revenue, direct cost of Design-to-Silicon-Yield solutions for the nine months ended September 30, 2003 was 43%, compared with 45% for the nine months ended September 30, 2002. The percentage decreases for the three and nine month periods ending September 30, 2003 were primarily the result of better utilization of client services resources and a favorable mix of Design-to-Silicon-Yield solutions revenue elements.

Amortization of Acquired Core Technology. Amortization of acquired core technology for the three months ended September 30, 2003 was $653,000, compared with $41,000 for the three months ended September 30, 2002, an increase of 1,493%. Amortization of acquired core technology for the nine months ended September 30, 2003 was $818,000, compared with $123,000 for the nine months ended September 30, 2002, an increase of 565%. The increases in both the three and nine month periods ending September 30, 2003 were attributable to amortizing the acquired core technology from Wafer Yield, Inc. (“Wafer Yield”) and IDS.

     Research and Development. Research and development expenses for the three months ended September 30, 2003 were $4.4 million, compared with $4.0 million for the three months ended September 30, 2002, an increase of 11%. Research and development expenses for the nine months ended September 30, 2003 were $13.1 million, compared with $11.1 million for the nine months ended September 30, 2002, an increase of 18%. The absolute dollar increases in research and development expenses were primarily due to the increase in personnel related costs and expansion of development activities in Europe. As a percentage of total revenue, research and development expenses for the three months ended September 30, 2003 were 39%, compared with 36% for the three months ended September 30, 2002. As a percentage of total revenue, research and development expenses for the nine months ended September 30, 2003 were 43%, compared with 32% for the nine months ended September 30, 2002. The percentage increase for the three months ended September 30, 2003 was primarily the result of an increase in personnel related costs and expansion of development activities in Europe. The percentage increase for the nine months ended September 30, 2003 was primarily the result of an increase in personnel related costs and expansion of development activities in Europe coupled with the decrease in revenue. We anticipate that we will continue to commit considerable resources to research and development in the future and that these expenses will continue to increase significantly in absolute dollars.

     Selling, General and Administrative. Selling, general and administrative expenses for the three months ended September 30, 2003 were $3.1 million, compared with $2.6 million for the three months ended September 30, 2002, an increase of 18%. The absolute dollar increase in selling, general and administrative expenses was attributable to an increase in personnel related expenses, particularly in sales and marketing functions, and an increase in outside commissions. Selling, general and administrative expenses for the nine months ended September 30, 2003 were $8.7 million, compared with $7.7 million for the nine months ended September 30, 2002, an increase of 13%. The absolute dollar increase in selling, general and administrative expenses was attributable to an increase in personnel related expenses partially offset by a decrease in legal fees. As a percentage of total revenue, selling, general and administrative expenses for the three months ended September 30, 2003 were 27%, compared with 24% for the three months ended September 30, 2002. As a percentage of total revenue, selling, general and administrative expenses for the nine months ended September 30, 2003 were 29%, compared with 22% for the nine months ended September 30, 2002. The percentage increase in the three months ended September 30, 2003 was attributed to the increase in personnel related expenses. The increase in the nine months ended September 30, 2003 was primarily the result of increased selling, general and administrative expenses and the decrease in overall revenue. We expect that selling, general and administrative expenses will increase in absolute dollars to support our increased selling and administrative efforts.

     Stock-Based Compensation Amortization. Stock-based compensation amortization for the three months ended September 30, 2003 was $366,000, compared with $640,000 for the three months ended September 30, 2002, a decrease of 43%. Stock-based compensation amortization for the nine months ended September 30, 2003 was $1.3 million, compared with $2.2 million for the nine months ended September 30, 2002, a decrease of 39%. The decreases in both the three and nine months ended September 30, 2003 were due to the effects of the graded vesting method of amortization resulting in higher amortization expense during the initial period following the respective option grants, partially offset by a stock compensation charge of $227,000 for stock options granted to non-employees in the quarter ending March 31, 2003.

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     Amortization of Other Acquired Intangibles. Amortization of acquired other intangibles for both the three and nine months ended September 30, 2003 was $137,000. There was no amortization of acquired other intangibles for the comparable periods in fiscal 2002. The increases in both the three and nine month periods ending September 30, 2003 were attributable to amortizing the acquired other intangibles from IDS.

     Write-off of in-process research and development. Write-off of in-process research and development for the three and nine months ended September 30, 2003, was $800,000. Write-off of in-process research and development related to the acquisition of IDS in September 2003 was associated with acquired technology that had not reached technological feasibility and for which there was no alternative future use. Through the use of an independent valuation specialist, we determined the fair value of the acquired in-process technology by estimating the cash flows related to projects under development and the estimated revenues and operating profits related to these projects. The resulting estimated cash flows were discounted to their net present value. We expect the acquired in-process technology to be developed into commercially feasible products in the future. However, there are can be no assurance as to when such products will be commercially feasible in the future or if they will reach commercial feasibility at all.

     Interest and Other Income. Interest and other income for the three months ended September 30, 2003 was $278,000, compared with $442,000 for the three months ended September 30, 2002, a decrease of 37%. Interest and other income for the nine months ended September 30, 2003 was $1.0 million, compared with $1.1 million for the nine months ended September 30, 2002, a decrease of 12%. The decreases were primarily due to interest earned on lower average cash and cash equivalents balances in 2003 and lower interest rates.

     Provision (benefit) for Taxes. The tax benefit for the three months ended September 30, 2003 was $441,000, compared with a tax provision of $345,000 for the three months ended September 30, 2002, a decrease of 228%. The tax benefit for the nine months ended September 30, 2003 was $972,000, compared with a tax provision of $1.7 million for the nine months ended September 30, 2002, a decrease of 156%. The decrease from a tax provision to a tax benefit for the three months ended September 30, 2003 was primarily due to the shift from income before taxes to a loss before taxes and a change in the effective tax rate due to a change in our financial outlook as a result of the IDS acquisition. The decrease from a tax provision to a tax benefit for the nine months ended September 30, 2003 was primarily due to the shift from income before taxes for the nine months ended September 30, 2002 to a loss before taxes for the nine months ended September 30, 2003.

Liquidity and Capital Resources

     Net cash used in operating activities was $4.9 million for the nine months ended September 30, 2003, compared with net cash provided by operating activities of $2.4 million for the nine months ended September 30, 2002. Net cash used in operating activities for the nine months ended September 30, 2003 resulted from decreases in deferred revenue of $3.2 million, deferred taxes of $2.3 million, other accrued liabilities of $573,000, billings in excess of revenue recognized of $273,000 and increases in accounts receivable of $1.2 million, accrued compensation of $1.1 million, prepaid expenses and other assets of $902,000, accounts payable of $632,000, in-process research and development write-off of $800,000, taxes payable of $447,000, and net income of $578,000 after adjustment for depreciation and amortization of intangible assets of $2.5 million, and deferred stock compensation of $1.3 million. The decrease in deferred revenue was the result of amortizing revenue from four separate business arrangements plus software support and maintenance. The increase in accounts payable was primarily attributable to the expenses and other acquisition obligations associated with the IDS acquisition. The increase in accounts receivable was due to the increase in billings at the end of the accounting period. The increase in accrued compensation was attributed to increases in accrued commissions, vacation accrual and accrued employee stock purchase contributions.

     Net cash used in investing activities during the nine months ended September 30, 2003 consisted of $17.9 million paid in connection with our acquisition of IDS, $2.6 million paid in connection with our acquisition of certain assets and related business operations of WaferYield and $1.7 million in purchases of property and equipment. Net cash used in investing activities during the nine months ended September 30, 2002 consisted of $1.8 million in purchases of property and equipment, which were principally computer hardware to expand our operations and growing infrastructure.

     Net cash provided by financing activities was $2.2 million for the nine months ended September 30, 2003, compared with net cash provided by financing activities of $1.9 million for the nine months ended September 30, 2002. Net cash provided by financing activities for the nine months ended September 30, 2003 were primarily the result of repayment of employee notes receivable of $1.2 million, proceeds from purchases under the employee stock purchase plan of $543,000 and the exercise by employees of stock options under the 2001 Stock Plan of $406,000.

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     As of September 30, 2003, working capital was $40.9 million, compared with $73.6 million as of December 31, 2002. Cash and cash equivalents as of September 30, 2003 were $46.6 million, compared to $71.5 million as of December 31, 2002, a decrease of $24.9 million. The decrease in working capital was mainly attributed to the acquisition of IDS and certain assets and liabilities of WaferYield. We expect to experience growth in our operating expenses, particularly for research and development and additions to our workforce in order to execute our business plan. As a result, we anticipate that our operating expenses, as well as planned capital expenditures, will constitute a material use of our cash resources. In addition, we may use cash resources to fund potential investments in, or acquisitions of, complementary products, technologies or businesses. We believe that our existing cash resources, and anticipated funds from operations, will satisfy our cash requirements to fund our operating activities, capital expenditures and other obligations for at least the next twelve months. However, in the event that during such period, or thereafter, we are not successful in generating sufficient cash flows from operations we may need to raise additional capital through private or public financings, strategic relationships or other arrangements, which may not be available to us on acceptable terms or at all.

Euro-Currency

     We began doing business in Europe denominated in Euros on January 1, 2002. This adoption did not have a material effect on our business.

Recent Accounting Pronouncements

     In July 2002, the Financial Accounting Standards Board (“FASB”) issued SFAS No. 146, “Accounting for Costs Associated with Exit or Disposal Activities. SFAS No. 146 addresses financial accounting and reporting for costs associated with exit or disposal activities and nullifies Emerging Issues Task Force (“EITF”) Issue No. 94-3, “Liability Recognition for Certain Employee Termination Benefits and Other Costs to Exit an Activity (Including Certain Costs Incurred in a Restructuring)”. SFAS No. 146 requires that a liability for a cost associated with an exit or disposal activity be recognized when the liability is incurred rather than when the exit or disposal plan is approved. We adopted SFAS No. 146 on January 1, 2003. The adoption of this statement did not have an effect on our financial position and operating results.

     In November 2002, the FASB issued FASB Interpretation (“FIN”) No. 45, “Guarantor’s Accounting and Disclosure Requirements for Guarantees, including Indirect Guarantees of Indebtedness of Others”. FIN 45 requires companies to recognize, at the inception of a guarantee, a liability for the fair value of the obligation undertaken in issuing the guarantee. We adopted FIN 45 on January 1, 2003. The adoption of this statement did not have an effect on our financial position and operating results.

     We generally provide a warranty to our customers that our software will perform substantially in accordance with documentation typically for a period of 90 days following delivery of our products. We also indemnify certain customers from third-party claims of intellectual property infringement relating to the use of our products. Historically, costs related to these guarantees have not been significant. We are unable to estimate the maximum potential impact of these guarantees on our future results of operations.

     In December 2002, the EITF reached a consensus on EITF Issue No. 00-21, “Revenue Arrangements with Multiple Deliverables”. This issue addresses certain aspects of the accounting by a vendor for arrangements under which it will perform multiple revenue-generating activities. In some arrangements, the different revenue-generating activities (deliverables) are sufficiently separable and there exists sufficient evidence of their fair values to separately account for some or all of the deliverables (that is, there are separate units of accounting). In other arrangements, some or all of the deliverables are not independently functional, or there is not sufficient evidence of their fair values to account for them separately. This issue addresses when and, if so, how an arrangement involving multiple deliverables should be divided into separate units of accounting. This issue does not change otherwise applicable revenue recognition criteria. The guidance in this issue is effective for revenue arrangements entered into in fiscal periods beginning after June 15, 2003. The adoption of this statement did not have an effect on our consolidated financial statements.

     In December 2002, the FASB issued SFAS No. 148, “Accounting for Stock-Based Compensation — Transition and Disclosure, an amendment to FASB Statement 123”. SFAS No. 148 provides alternative methods of transition for a voluntary change to the fair value based method of accounting of stock-based employee compensation. In addition, SFAS No. 148 amends the disclosure requirements of SFAS No. 123, “Accounting for Stock-Based Compensation”,

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to require prominent disclosures in both annual and interim financial statements about the method of accounting for stock-based employee compensation and the effect of the method used on reported results. We adopted the disclosure provisions of SFAS No. 148 effective December 31, 2002. We adopted the interim disclosure requirements of SFAS No. 148 during the three months ended March 31, 2003.

     In January 2003, the FASB issued FASB Interpretation No. 46 “Consolidation of Variable Interest Entities”. FIN 46 amended ARB 51, Consolidated Financial Statements, and established standards for determining under what circumstances a variable interest entity (VIE) should be consolidated with its primary beneficiary. FIN 46 also requires disclosures about VIE’s that we are not required to consolidate, but in which we have a significant variable interest. We do not expect the adoption of FIN 46 will have a material effect on our financial position and results of operations.

Factors Which May Affect Future Results

If semiconductor designers and manufacturers do not adopt our Design-to-Silicon-Yield solutions, we may be unable to increase or maintain our revenue.

     If semiconductor designers and manufacturers do not adopt our Design-to-Silicon-Yield solutions, our revenue could decline. To date, we have worked with a limited number of semiconductor companies on a limited number of IC products and processes. To be successful, we will need to enter into agreements covering a larger number of IC products and processes with existing customers and new customers. Our existing customers are primarily large integrated device manufacturers, or IDMs. We will need to target as new customers additional IDMs, fabless semiconductor companies and foundries, as well as system manufacturers. Factors that may limit adoption of our Design-to-Silicon-Yield solutions by semiconductor companies include:

• our customers’ failure to achieve satisfactory yield improvements using our Design-to-Silicon-Yield solutions;

• a decrease in demand for semiconductors generally or the demand for deep submicron semiconductors failing to grow as rapidly as expected;

• the industry may develop alternative methods to enhance the integration between the semiconductor design and manufacturing processes due to a rapidly evolving market and the likely emergence of new technologies;

• our existing and potential customers’ reluctance to understand and accept our innovative gain share fee component; and

• our customers’ concern about our ability to keep highly competitive information confidential.

Our earnings per share and other key operating results may be unusually high in a given quarter, thereby raising investors’ expectations, and then unusually low in the next quarter, thereby disappointing investors, which could cause our stock price to drop.

     Historically, our quarterly operating results have fluctuated. Our future quarterly operating results will likely fluctuate from time to time and may not meet the expectations of securities analysts and investors in some future period. The price of our common stock could decline due to such fluctuations. The following factors may cause significant fluctuations in our future quarterly operating results:

• the size and timing of sales volumes achieved by our customers’ products;

• the loss of any of our large customers or an adverse change in any of our large customers’ businesses;

• the size of improvements in our customers’ yield and the timing of agreement as to those improvements;

• our long and variable sales cycle;

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• changes in the mix of our revenue;

• changes in the level of our operating expenses needed to support our projected growth; and

• delays in completing solution implementations for our customers.

Worldwide events, including the probability of prolonged involvement in Iraq, may reduce our revenues and harm our business.

     Future political or related events similar or comparable to the September 11, 2001 terrorist attacks, or significant military conflicts such as the continued involvement in Iraq, or long term reactions of governments and society to such events, may cause significant delays or reductions in technology purchases or limit our ability to travel to certain parts of the world.

Our gain share revenue is largely dependent on the volume of integrated circuits, or ICs, our customers are able to sell to their customers, which is outside of our control.

     Our gain share revenue for a particular product is largely determined by the volume of that product our customer is able to sell to its customers, which is outside of our control. We have limited ability to predict the success or failure of our customers’ IC products. We may commit a significant amount of time and resources to a customer who is ultimately unable to sell as many units as we had anticipated when contracting with them. Since we currently work on a small number of large projects, any product that does not achieve commercial viability could significantly reduce our revenue and results of operations below expectations. In addition, if we work with two directly competitive products, volume in one may offset volume, and any of our related gain share, in the other product. Further, decreased demand for semiconductor products decreases the volume of products our customers are able to sell, which may adversely affect our gain share revenue.

Gain share measurement requires data collection and is subject to customer agreement, which can result in uncertainty and cause quarterly results to fluctuate.

     We can only recognize gain share revenue once we have reached agreement with our customers on their level of yield performance improvements. Because measuring the amount of yield improvement is inherently complicated and dependent on our customers’ internal information systems, there may be uncertainty as to some components of measurement. This could result in our recognition of less revenue than expected. In addition, any delay in measuring gain share could cause all of the associated revenue to be delayed until the next quarter. Since we currently have only a few large customers and we are relying on gain share as a significant component of our total revenue, any delay could significantly harm our quarterly results.

Changes in the structure of our customer contracts, particularly the mix between fixed and variable revenue, can adversely affect the size and timing of our total revenue.

     Our success is largely dependent upon our ability to structure our future customer contracts to include a larger gain share component relative to the fixed fee component. If we are successful in increasing the gain share component of our customer contracts, we will experience an adverse impact on our operating results in the short term as we reduce the fixed fee component, which we typically recognize earlier than gain share fees. In addition, by increasing the gain share component, we increase the variability of our revenue, and therefore increase the risk that our total future revenue will be lower than expected and fluctuate significantly from period to period.

We generate virtually all of our total revenue from a limited number of customers, so the loss of any one of these customers could significantly reduce our revenue and results of operations below expectations.

     Historically, we have had a small number of large customers and we expect this to continue in the near term. In the three months ended September 30, 2003, four customers accounted for 65% of our total net revenue, with Toshiba representing 26%, Epson representing 18%, Matsushita representing 12% and Sony representing 9%, respectively. For the year ended December 31, 2002, Toshiba, Epson, Matsushita and Sony represented 25%, 1%, 22% and 17%, respectively. The loss of any of these customers or a decrease in the sales volumes of their products could significantly reduce our total revenue below expectations. In particular, such a loss could cause significant

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fluctuations in results of operations because our expenses are fixed in the short term, it takes us a long time to replace customers and any offsetting gain share revenue from new customers would not begin to be recognized until much later.

It typically takes us a long time to sell our novel solutions to new customers, which can result in uncertainty and delays in generating additional revenue.

     Because our gain share business model is novel and our Design-to-Silicon-Yield solutions are unfamiliar, our sales cycle is lengthy and requires a significant amount of our senior management’s time and effort. Furthermore, we need to target those individuals within a customer’s organization who have overall responsibility for the profitability of an IC. These individuals tend to be senior management or executive officers. We may face difficulty identifying and establishing contact with such individuals. Even after initial acceptance, due to the complexity of structuring the gain share component, the negotiation and documentation processes can be lengthy. It can take nine months or more to reach a signed contract with a customer. Unexpected delays in our sales cycle could cause our revenue to fall short of expectations.

We have a history of losses, we expect to incur losses in the future and we may be unable to achieve or subsequently maintain profitability.

     We have experienced losses in the four most recent quarters. We may not achieve or subsequently maintain profitability if our revenue increases more slowly than we expect or not at all. In addition, virtually all of our operating expenses are fixed in the short term, so any shortfall in anticipated revenue in a given period could significantly reduce our operating results below expectations. Our accumulated deficit was $18.1 million as of September 30, 2003. We expect to continue to incur significant expenses in connection with:

• increased funding for research and development;

• expansion of our solution implementation teams;

• expansion of our sales and marketing efforts; and

• additional non-cash charges relating to amortization of intangibles and deferred stock compensation.

     As a result, we will need to significantly increase revenue to maintain profitability on a quarterly or annual basis. Any of these factors could cause our stock price to decline.

We must continually attract and retain highly talented executives, engineers and research and development personnel or we will be unable to expand our business as planned.

     We will need to continue to hire highly talented executives, engineers and research and development personnel to support our planned growth. We have experienced, and we expect to continue to experience, delays and limitations in hiring and retaining highly skilled individuals with appropriate qualifications. We intend to continue to hire foreign nationals, particularly as we expand our operations internationally. We have had, and expect to continue to have, difficulty in obtaining visas permitting entry into the United States for several of our key personnel, which disrupts our ability to strategically locate our personnel. If we lose the services of any of our key executives or a significant number of our engineers, it could disrupt our ability to implement our business strategy. Competition for executives and qualified engineers can be intense, especially in Silicon Valley where we are principally based.

If our Design-to-Silicon-Yield solutions fail to keep pace with the rapid technological changes in the semiconductor industry, we could lose customers and revenue.

     We must continually devote significant engineering resources to enable us to keep up with the rapidly evolving technologies and equipment used in the semiconductor design and manufacturing processes. These innovations are inherently complex and require long development cycles. Not only do we need the technical expertise to implement the changes necessary to keep our technologies current, we also rely heavily on the judgment of our advisors and management to anticipate future market trends. Our customers expect us to stay ahead of the technology curve and

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expect that our Design-to-Silicon-Yield solutions will support any new design or manufacturing processes or materials as soon as they are deployed. If we are not able to timely predict industry changes, or if we are unable to modify our Design-to-Silicon-Yield solutions on a timely basis, our existing solutions will be rendered obsolete and we may lose customers. If we do not keep pace with technology, our existing and potential customers may choose to develop their own solutions internally as an alternative to ours and we could lose market share, which could adversely affect our operating results.

We intend to pursue additional strategic relationships, which are necessary to maximize our growth, but could substantially divert management attention and resources.

     In order to establish strategic relationships with industry leaders at each stage of the IC design and manufacturing processes, we may need to expend significant resources and will need to commit a significant amount of management’s time and attention, with no guarantee of success. If we are unable to enter into strategic relationships with these companies, we will not be as effective at modeling existing technologies or at keeping ahead of the technology curve as new technologies are introduced. In the past, the absence of an established working relationship with key companies in the industry has meant that we have had to exclude the effect of their component parts from our modeling analysis, which reduces the overall effectiveness of our analysis and limits our ability to improve yield. We may be unable to establish key industry strategic relationships if any of the following occur:

• potential industry partners become concerned about our ability to protect their intellectual property;

• potential industry partners develop their own solutions to address the need for yield improvement;

• our potential competitors establish relationships with industry partners with which we seek to establish a relationship; or

• potential industry partners attempt to restrict our ability to enter into relationships with their competitors.

Recent acquisitions may adversely affect our business by diverting management’s attention, increasing our expenses or by being more difficult to integrate than expected.

     During 2003, we completed the purchase of certain assets and liabilities of WaferYield, and the acquisition of IDS. Our success in realizing the strategic benefits and growth opportunities to be gained from incorporating the operations of WaferYield and IDS into PDF and the timing of this realization depend upon our successful integration of WaferYield and IDS. The integration of WaferYield and IDS is a complex, costly and time-consuming process. The difficulties of combining our operations associated with these acquisitions include:

• consolidating research and development operations;

• retaining key employees;

• incorporating acquired products and business technology into our existing product lines;

• consolidating corporate and administrative infrastructures;

• coordinating sales and marketing functions;

• preserving research and development, marketing, customer and other important relationships; and

• minimizing the diversion of management’s attention from ongoing business concerns.

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     We face operational and financial risks associated with international operations.

     We derive a majority of our revenue from international sales, principally from customers based in Asia. Revenue generated from customers in Asia accounted for 74% of total revenue in the quarter ended September 30, 2003. For the year ended December 31, 2002 revenue generated from customers in Asia was 71%. We expect that a significant portion of our total future revenue will continue to be derived from companies based in Asia. We are subject to risks inherent in doing business in international markets. These risks include:

• some of our key engineers and other personnel who are foreign nationals may have difficulty gaining access to the United States and other countries in which our customers or our offices may be located;

• greater difficulty in collecting account receivables resulting in longer collection periods;

• language and other cultural differences may inhibit our sales and marketing efforts and create internal communication problems among our U.S. and foreign research and development teams;

• compliance with, and unexpected changes in, a wide variety of foreign laws and regulatory environments with which we are not familiar;

• currency risk due to the fact that expenses for our international offices are denominated in the local currency, including the Euro, while virtually all of our revenue is denominated in U.S. dollars; and

• economic or political instability.

     In Japan, in particular, we face the following additional risks:

• any recurrence of the recent overall downturn in Asian economies could limit our ability to retain existing customers and attract new ones in Asia;

• if the U.S. dollar increases in value relative to the Japanese Yen, the cost of our solutions will be more expensive to existing and potential Japanese customers and therefore less competitive; and

• if any of these risks materialize, we may be unable to continue to market our Design-to-Silicon-Yield solutions successfully in international markets.

Competition in the market for solutions that address yield improvement and integration between IC design and manufacturing may intensify in the future, which could slow our ability to grow or execute our strategy.

     Competition in our market may intensify in the future, which could slow our ability to grow or execute our strategy. Our current and potential customers may choose to develop their own solutions internally, particularly if we are slow in deploying our solutions. Many of these companies have the financial and technical capability to develop their own solutions. Currently, we are not aware of any other provider of commercial solutions for systematic IC yield and performance enhancement. We face indirect competition from the internal groups at IC companies that use an incomplete set of components that is not optimized to accelerate their process-design integration. Some providers of yield management software or inspection equipment may seek to broaden their product offerings and compete with us. For example, KLA-Tencor has announced adding the use of test structures to one of their inspection product lines. Other companies, such as HPL Technologies which, through its acquisition of Test Chip Technologies, has indicated its intent to further utilize test chips in its product offering, may in the future seek to enter the silicon infrastructure market. In addition, we believe that the demand for solutions that address the need for better integration between the silicon design and manufacturing processes may encourage direct competitors to enter into our market. For example, large integrated organizations, such as IDMs, electronic design automation software providers, IC design service companies or semiconductor equipment vendors, may decide to spin-off a business unit that competes with us. Other potential competitors include fabrication facilities that may decide to offer solutions competitive with ours as part of their value proposition to their customers. If these potential competitors are able to attract industry partners or customers faster than we can, we may not be able to grow and execute our strategy as quickly or at all. In addition, customer preferences may shift away from our Design-to-Silicon-Yield solutions as a result of the increase in competition.

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     We must effectively manage and support our recent and planned growth in order for our business strategy to succeed.

     We will need to continue to grow in all areas of operation and successfully integrate and support our existing and new employees into our operations, or we may be unable to implement our business strategy in the time frame we anticipate, if at all. We will also need to switch to a new accounting system in the near future, which could disrupt our business operations and distract management. In addition, we will need to expand our intranet to support new data centers to enhance our research and development efforts. Our intranet is expensive to expand and must be highly secure due to the sensitive nature of our customers’ information that we transmit. Building and managing the support necessary for our growth places significant demands on our management and resources. These demands may divert these resources from the continued growth of our business and implementation of our business strategy. Further, we must adequately train our new personnel, especially our client service and technical support personnel, to adequately, and accurately, respond to and support our customers. If we fail to do this, it could lead to dissatisfaction among our customers, which could slow our growth.

Our solution implementations may take longer than we anticipate, which could cause us to lose customers and may result in adjustments to our operating results.

     Our solution implementations require a team of engineers to collaborate with our customers to address complex yield loss issues by using our software and other technologies. We must estimate the amount of time needed to complete an existing solution implementation in order to estimate when the engineers will be able to commence a new solution implementation. Given the time pressures involved in bringing IC products to market, targeted customers may proceed without us if we are not able to commence their solution implementation on time. Due to our lengthy sales cycle, we may be unable to replace these targeted implementations in a timely manner, which could cause fluctuations in our operating results.

     In addition, our accounting for solution implementation contracts, which generate fixed fees, sometimes require adjustments to profit and loss based on revised estimates during the performance of the contract. These adjustments may have a material effect on our results of operations in the period in which they are made. The estimates giving rise to these risks, which are inherent in fixed-price contracts, include the forecasting of costs and schedules, and contract revenues related to contract performance.

Our chief executive officer and our chief strategy officer are critical to our business and we cannot guarantee that they will remain with us indefinitely.

     Our future success will depend to a significant extent on the continued services of John Kibarian, our President and Chief Executive Officer, and David Joseph, our Chief Strategy Officer. If we lose the services of either of these key executives, it could slow execution of our business plan, hinder our product development processes and impair our sales efforts. Searching for their replacements could divert our other senior management’s time and increase our operating expenses. In addition, our industry partners and customers could become concerned about our future operations, which could injure our reputation. We do not have long-term employment agreements with these executives and we do not maintain any key person life insurance policies on their lives.

Inadvertent disclosure of our customers’ confidential information could result in costly litigation and cause us to lose existing and potential customers.

     Our customers consider their product yield information and other confidential information, which we must gather in the course of our engagement with the customer, to be extremely competitively sensitive. If we inadvertently disclosed or were required to disclose this information, we would likely lose existing and potential customers, and could be subject to costly litigation. In addition, to avoid potential disclosure of confidential information to competitors, some of our customers may, in the future, ask us not to work with key competitive products.

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If we fail to protect our intellectual property rights, customers or potential competitors may be able to use our technologies to develop their own solutions which could weaken our competitive position, reduce our revenue or increase our costs.

     Our success depends largely on the proprietary nature of our technologies. We currently rely primarily on copyright, trademark and trade secret protection. Whether or not patents are granted to us, litigation may be necessary to enforce our intellectual property rights or to determine the validity and scope of the proprietary rights of others. As a result of any such litigation, we could lose our proprietary rights and incur substantial unexpected operating costs. Litigation could also divert our resources, including our managerial and engineering resources. In the future, we intend to rely primarily on a combination of patents, copyrights, trademarks and trade secrets to protect our proprietary rights and prevent competitors from using our proprietary technologies in their products. These laws and procedures provide only limited protection. Our pending patent applications may not result in issued patents, and even if issued, they may not be sufficiently broad to protect our proprietary technologies. Also, patent protection in foreign countries may be limited or unavailable where we need such protection.

     Our technologies could infringe the intellectual property rights of others causing costly litigation and the loss of significant rights.

     Significant litigation regarding intellectual property rights exists in the semiconductor industry. It is possible that a third party may claim that our technologies infringe their intellectual property rights or misappropriate their trade secrets. Any claim, even if without merit, could be time consuming to defend, result in costly litigation or require us to enter into royalty or licensing agreements, which may not be available to us on acceptable terms, or at all. A successful claim of infringement against us in connection with the use of our technologies could adversely affect our business.

     Defects in our proprietary technologies and software tools could decrease our revenue and our competitive market share.

     If the software or proprietary technologies we provide to a customer contain defects that increase our customer’s cost of goods sold and time to market, these defects could significantly decrease the market acceptance of our Design-to-Silicon-Yield solutions . Any actual or perceived defects with our software or proprietary technologies may also hinder our ability to attract or retain industry partners or customers, leading to a decrease in our revenue. These defects are frequently found during the period following introduction of new software or proprietary technologies or enhancements to existing software or proprietary technologies. Our software or proprietary technologies may contain errors not discovered until after customer implementation of the silicon design and manufacturing process recommended by us. If our software or proprietary technologies contain errors or defects, it could require us to expend significant resources to alleviate these problems, which could result in the diversion of technical and other resources from our other development efforts.

     We may not be able to raise necessary funds to support our growth or execute our strategy.

     We currently anticipate that our available cash resources will be sufficient to meet our presently anticipated working capital and capital expenditure requirements for at least the next 12 months. However, we may need to raise additional funds in order to:

• support more rapid expansion;

• develop or enhance Design-to-Silicon-Yield solutions;

• respond to competitive pressures; or

• acquire complementary businesses or technologies.

     These factors will impact our future capital requirements and the adequacy of our available funds. We may need to raise additional funds through public or private financings, strategic relationships or other arrangements. We cannot guarantee that we will be able to raise any necessary funds on terms favorable to us, or at all.

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We may not be able to expand our proprietary technologies if we do not consummate potential acquisitions or investments or successfully integrate them with our business.

     To expand our proprietary technologies, we may acquire or make investments in complementary businesses, technologies or products if appropriate opportunities arise. We may be unable to identify suitable acquisition or investment candidates at reasonable prices or on reasonable terms, or consummate future acquisitions or investments, each of which could slow our growth strategy. We may have difficulty integrating the acquired products, personnel or technologies of any acquisitions we might make. These difficulties could disrupt our ongoing business, distract our management and employees and increase our expenses.

     The semiconductor industry is cyclical in nature.

     Our revenue is highly dependent upon the overall condition of the semiconductor industry, especially in light of our gain share revenue component. The semiconductor industry is highly cyclical and subject to rapid technological change and has been subject to significant economic downturns at various times, characterized by diminished product demand, accelerated erosion of average selling prices and production overcapacity. One such downturn commenced during the third quarter of calendar 2000 and is continuing currently. The semiconductor industry also periodically experiences increased demand and production capacity constraints. As a result, we may experience significant fluctuations in operating results due to general semiconductor industry conditions and overall economic conditions.

     Semiconductor companies are subject to risk of natural disasters.

     Semiconductor companies have in the past experienced major reductions in foundry capacity due to earthquakes in Taiwan, Japan and California. In light of our gain share revenue component, our results of operations can be significantly decreased if one of our customers must shut down IC production due to a natural disaster such as earthquake, fire, tornado or flood. Moreover, since semiconductor product life cycles have become relatively short, a significant delay in the production of a product could result in lost revenue, not merely delayed revenue.

Management has broad discretion as to the use of proceeds from our initial public offering and, as a result, we may not use the proceeds to the satisfaction of our stockholders.

On August 1, 2001, we closed our initial public offering. Our board of directors and management have broad discretion in allocating the net proceeds therefrom. They may choose to allocate such proceeds in ways that do not produce a favorable return or are not supported by our stockholders. We have designated only limited specific uses for the net proceeds from our initial public offering.

     The concentration of our capital stock ownership with insiders will likely limit your ability to influence corporate matters.

     The concentration of ownership of our outstanding capital stock with our directors and executive officers may limit your ability to influence corporate matters. Our directors, executive officers and their affiliates, beneficially own a significant portion of our outstanding capital stock. As a result, these stockholders, if acting together, will have the ability to control all matters submitted to our stockholders for approval, including the election and removal of directors and the approval of any corporate transactions.

     We have anti-takeover defenses that could delay or prevent an acquisition of our company.

     Provisions of our certificate of incorporation and bylaws and Delaware law could make it more difficult for a third party to acquire us, even if doing so would be beneficial to our stockholders.

Our stock price is likely to be extremely volatile as the market for technology companies’ stock has recently experienced extreme price and volume fluctuations.

     Volatility in the market price of our common stock could result in securities class action litigation. Any litigation would likely result in substantial costs and a diversion of management’s attention and resources. Despite the strong pattern of operating losses of technology companies, the market demand, valuation and trading prices of

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these companies has at times been high. At the same time, the share prices of these companies’ stocks have been highly volatile and have recorded lows well below their historical highs. As a result, investors in these companies often buy the stock at very high prices only to see the price drop substantially a short time later, resulting in an extreme drop in value in the stock holdings of these investors. Our stock may be volatile and may not trade at the same levels as other technology stocks or at or near its historical highs.

     A large number of shares becoming eligible for sale could cause our stock price to decline.

     Sales of a substantial number of shares of our common stock could cause our stock price to fall. Our current stockholders hold a substantial number of shares, which they are able to sell, from time-to-time, in the public market.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

     The following discusses our exposure to market risk related to changes in interest rates and foreign currency exchange rates. We do not currently own any equity investments, nor do we expect to own any in the foreseeable future. This discussion contains forward-looking statements that are subject to risks and uncertainties. Our actual results could vary materially as a result of a number of factors.

     Interest Rate Risk. As of September 30, 2003, we had cash and cash equivalents of $46.6 million, consisting of cash and highly liquid money market instruments with maturities of 90 days or less. Because of the short maturities of those instruments, a sudden change in market interest rates would not have a material impact on the fair value of the portfolio. We would not expect our operating results or cash flows to be affected to any significant degree by the effect of a sudden change in market interest on our portfolio. A hypothetical increase in market interest rates of 10% from the market rates in effect at September 30, 2003 would cause the fair value of these investments to decrease by an immaterial amount which would not have significantly impacted our financial position or results of operations. Declines in interest rates over time will result in lower interest income and increased interest expense.

     Foreign Currency and Exchange Risk. Virtually all of our revenue is denominated in U.S. dollars, although such revenue is derived substantially from foreign customers. Foreign sales to date, generated by our German subsidiary PDF Solutions GmbH since the date of its acquisition, have for the most part, been invoiced in local currencies, creating receivables denominated in currencies other than the U.S. dollar. The risk due to foreign currency fluctuations associated with these receivables is partially reduced by local payables denominated in the same currencies, and presently we do not consider it necessary to hedge these exposures. We intend to monitor our foreign currency exposure. There can be no assurance that exchange rate fluctuations will not have a materially negative impact on our business.

Item 4. Controls and Procedures

     We recognize that any disclosure controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives and in reaching a reasonable level of assurance. Our chief executive officer and chief financial officer necessarily were required to apply their judgment in evaluating the cost-benefit relationship of possible controls and procedures. Our chief executive officer and our chief financial officer, after evaluating the effectiveness of our “disclosure controls and procedures” (as defined in the Securities Exchange Act of 1934 Rules 13a-15(e) and 15d-15(e)), have concluded that as of the end of the period covered by this quarterly report, our disclosure controls and procedures were adequate and designed to ensure that material information relating to us and our consolidated subsidiaries would be made known to them by others within those entities so that we are able to record, process, summarize and disclose such information in the reports we file with the SEC as of the end of the period covered by this report.

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PART II — OTHER INFORMATION

Item 1. Legal Proceedings

     Not Applicable.

Item 2. Changes in Securities and Use of Proceeds

     (c)  Recent Sales of Unregistered Securities

     During the three months ended September 30, 2003, we issued 2,000,000 shares of common stock to the holders of common stock of IDS, effective September 24, 2003, in connection with our acquisition of IDS. As a result of our acquisition of IDS, each issued and outstanding share of IDS common stock was converted into the right to receive $1.52323 in cash and 0.13267 of a share of PDF common stock. We issued such shares, without registration under the Securities Act of 1933, in reliance upon the exemption set forth in Section 3(a)(10) of the Securities Act of 1933.

     (d)  Use of Proceeds

     Our Registration Statement on Form S-1 (File No. 333-43192) related to our initial public offering was declared effective by the SEC on July 26, 2001. The public offering commenced on July 27, 2001. All 4,500,000 shares of common stock offered in the final prospectus, as well as an additional 675,000 shares of common stock subject to the underwriters’ over-allotment option, were sold at the closing on August 1, 2001 at a price to the public of $12.00 per share (before deducting underwriting discounts and commissions) through a syndicate of underwriters managed by Credit Suisse First Boston Corporation, Robertson Stephens, Inc. and Dain Rauscher Incorporated. The aggregate gross proceeds of the shares offered and sold was $62.1 million, out of which we paid an aggregate of $4.3 million in underwriting discounts and commissions to the underwriters. Our total expenses, including underwriting discounts and commissions were approximately $5.6 million.

     We intend to use the net proceeds of the public offering primarily for general corporate purposes, including working capital and capital expenditures. The amounts and timing of these expenditures will vary depending on a number of factors, including the amount of cash generated or used by our operations, competitive and technological developments and the rate of growth, if any, of our business. We may use some of the net proceeds to acquire up to $10.0 million of outstanding shares of our common stock in open market or negotiated transactions pursuant to the repurchase program approved by our Board of Directors in February 2003. We have also used a portion of the net proceeds to acquire businesses, services, products or technologies or invest in businesses that we believe will complement our current or future business. As a result, we will retain broad discretion in the allocation of the proceeds of the public offering. Pending the uses described above, we will invest the net proceeds of the public offering in cash, cash equivalents, money market funds or short-term interest-bearing, investment-grade securities to the extent consistent with applicable regulations. We cannot predict whether the proceeds will be invested to yield a favorable return.

Item 3. Defaults on Senior Securities

     Not Applicable.

Item 4. Submission of Matters to a Vote of Security Holders

     Not Applicable.

Item 5. Other Information

     Not Applicable.

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Item 6. Exhibits and Reports on Form 8-K

     (a)  Exhibits:

Exhibit
Number	Description
2.1	Amended and Restated Agreement and Plan of Reorganization, dated September 2, 2003, by and among PDF Solutions, Inc., IDS Software Acquisition Corp., PDF Solutions, LLC and IDS Software Systems, Inc.****
3.1	Third Amended and Restated Certificate of Incorporation of PDF Solutions, Inc.**
3.2	Amended and Restated Bylaws of PDF Solutions, Inc.**
4.1	Specimen Stock Certificate**
4.2	Second Amended and Restated Rights Agreement dated July 6, 2001.*
10.24	Andre Hawit Employment Offer letter agreement dated September 24, 2003 by and between PDF Solutions, Inc. and Andre Hawit.
31.1	Rule 13(a)-14(a)/15(d)-14(a) Certification of President and Chief Executive Officer.
31.2	Rule 13(a)-14(a)/15(d)-14(a) Certification of Chief Financial Officer and Vice President of Finance and Administration.
32.1	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.***
32.2	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.***

*	Incorporated by reference to PDF’s Registration Statement on Form S-1, Amendment No. 7 filed July 9, 2001 (File No. 333-43192).
**	Incorporated by reference to PDF’s Report on Form 10-Q filed September 6, 2001 (File No. 000-31311).
***	As contemplated by SEC Release No. 33-8212, these exhibits are furnished with this Quarterly Report on Form 10-Q and are not deemed filed with the Securities and Exchange Commission and are not incorporated by reference in any filing of PDF Solutions, Inc. under the Securities Act of 1933 or the Securities Exchange Act of 1934, whether made before or after the date hereof and irrespective of any general incorporation language in any filings.
****	Incorporated by reference to Exhibit 2.1 to PDF Solutions, Inc.’s Current Report on Form 8-K filed on September 25, 2003.

     (b)  Reports on Form 8-K:

1.	On October 23, 2003, we filed a report on Form 8-K relating to our financial information for the quarter ended September 30, 2003 and forward-looking statements relating to our operational results.
2.	On November 12, 2003, we filed a report on Form 8-K/A, filing certain financial information in connection with our acquisition of IDS Software Systems, Inc.

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SIGNATURES

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

Date: November 14, 2003	By:	/s/ John K. Kibarian
		John K. Kibarian
		President and Chief Executive Officer
	By:	/s/ P. Steven Melman
		P. Steven Melman
		Chief Financial Officer and Vice President, Finance and Administration

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INDEX TO EXHIBITS

Exhibit
Number	Description
2.1	Amended and Restated Agreement and Plan of Reorganization, dated September 2, 2003, by and among PDF Solutions, Inc., IDS Software Acquisition Corp., PDF Solutions, LLC and IDS Software Systems, Inc.****
3.1	Third Amended and Restated Certificate of Incorporation of PDF Solutions, Inc.**
3.2	Amended and Restated Bylaws of PDF Solutions, Inc.**
4.1	Specimen Stock Certificate**
4.2	Second Amended and Restated Rights Agreement dated July 6, 2001.*
10.24	Andre Hawit Employment Offer letter agreement dated September 24, 2003 by and between PDF Solutions, Inc. and Andre Hawit.
31.1	Rule 13(a)-14(a)/15(d)-14(a) Certification of President and Chief Executive Officer.
31.2	Rule 13(a)-14(a)/15(d)-14(a) Certification of Chief Financial Officer and Vice President of Finance and Administration.
32.1	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.***
32.2	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.***

*	Incorporated by reference to PDF’s Registration Statement on Form S-1, Amendment No. 7 filed July 9, 2001 (File No. 333-43192).
**	Incorporated by reference to PDF’s Report on Form 10-Q filed September 6, 2001 (File No. 000-31311).
***	As contemplated by SEC Release No. 33-8212, these exhibits are furnished with this Quarterly Report on Form 10-Q and are not deemed filed with the Securities and Exchange Commission and are not incorporated by reference in any filing of PDF Solutions, Inc. under the Securities Act of 1933 or the Securities Exchange Act of 1934, whether made before or after the date hereof and irrespective of any general incorporation language in any filings.
****	Incorporated by reference to Exhibit 2.1 to PDF Solutions, Inc.’s Current Report on Form 8-K filed on September 25, 2003.

     (b)  Reports on Form 8-K:

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