Illumina (ILMN) 10-Q 2007 Q2 Quarterly report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

þ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For Quarterly Period EndedJuly 2, 2006

o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from                    to                    

Commission File Number000-30361

Illumina, Inc.

(Exact name of registrant as specified in its charter)

Delaware	33-0804655
(State or other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

9885 Towne Centre Drive, San Diego, CA	92121
(Address of Principal Executive Offices)	(Zip Code)

(858) 202-4500
(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 Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

YesR       No£

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

Large accelerated filerR       Accelerated filer£       Non-accelerated filer£

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes£       NoR

As of July 14, 2006, there were 45,952,517 shares of the Registrant’s Common Stock outstanding.

ILLUMINA, INC.

INDEX

	Page
PART I. FINANCIAL INFORMATION	3
Item 1. Financial Statements.	3
Condensed Consolidated Balance Sheets — July 2, 2006 (unaudited) and January 1, 2006.	3
Condensed Consolidated Statements of Operations — Three and Six Months Ended July 2, 2006 and July 3, 2005 (unaudited).	4
Condensed Consolidated Statements of Cash Flows — Six Months Ended July 2, 2006 and July 3, 2005 (unaudited).	5
Notes to Condensed Consolidated Financial Statements.	6
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.	16
Item 3. Quantitative and Qualitative Disclosures About Market Risk.	27
Item 4. Controls and Procedures.	27
PART II. OTHER INFORMATION	29
Item 1. Legal Proceedings.	29
Item 1A. Risk Factors.	29
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.	35
Item 3. Defaults upon Senior Securities.	35
Item 4. Submission of Matters to a Vote of Security Holders.	35
Item 5. Other Information.	35
Item 6. Exhibits.	36
SIGNATURES	37
EXHIBIT 3.2
EXHIBIT 10.32
EXHIBIT 31.1
EXHIBIT 31.2
EXHIBIT 32.1
EXHIBIT 32.2

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PART I. FINANCIAL INFORMATION

Item 1. Financial Statements.

Illumina, Inc.

Condensed Consolidated Balance Sheets

(In thousands)

	July 2, 2006		January 1, 2006 (1)
	(unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	152,250	$	50,822
Short-term investments		4,511		—
Accounts receivable, net		23,100		17,620
Inventory, net		17,324		10,309
Prepaid expenses and other current assets		2,153		959
Total current assets		199,338		79,710
Property and equipment, net		22,728		16,131
Goodwill		2,125		2,125
Intangible and other assets, net		6,760		2,644
Total assets	$	230,951	$	100,610
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable and accrued liabilities	$	34,757	$	21,600
Current portion of long-term debt		114		118
Total current liabilities		34,871		21,718
Long-term debt, less current portion		—		54
Deferred gain on sale of land and building		2,656		2,843
Other long-term liabilities		6,756		3,498
Commitments and contingencies
Stockholders’ equity		186,668		72,497
Total liabilities and stockholders’ equity	$	230,951	$	100,610

(1) The Condensed Consolidated Balance Sheet at January 1, 2006 has been derived from the audited financial statements as of that date.

See accompanying notes to the condensed consolidated financial statements.

3

Illumina, Inc.

Condensed Consolidated Statements of Operations

(Unaudited)

(In thousands, except per share amounts)

	Three Months Ended					Six Months Ended
	July 2, 2006		July 3, 2005			July 2, 2006		July 3, 2005
Revenue:
Product revenue	$	36,403	$	12,636		$	59,664	$	24,801
Service and other revenue		4,795		2,783			10,062		5,474
Research revenue		379		405			953		697
Total revenue		41,577		15,824			70,679		30,972
Costs and expenses:
Cost of product revenue (including non-cash stock compensation expense of $300, $0, $498 and $0, respectively)		11,912		4,033			19,588		7,970
Cost of service and other revenue (including non-cash stock compensation expense of $50, $0, $102 and $0, respectively)		1,664		701			3,281		1,363
Research and development (including non-cash stock compensation expense of $878, $17, $1,836 and $32, respectively)		8,587		7,318			16,803		13,211
Selling, general and administrative (including non-cash stock compensation expense of $2,099, $24, $4,022 and $66, respectively)		12,891		6,518			25,025		12,553
Acquired in-process research and development		—		15,800			—		15,800
Total costs and expenses		35,054		34,370			64,697		50,897
Income (loss) from operations		6,523		(18,546	)		5,982		(19,925	)
Interest and other income, net		856		58			1,424		253
Income (loss) before income taxes		7,379		(18,488	)		7,406		(19,672	)
Provision for income taxes		611		51			742		102
Net income (loss)	$	6,768	$	(18,539	)	$	6,664	$	(19,774	)
Net income (loss) per basic share	$	0.16	$	(0.46	)	$	0.16	$	(0.50	)
Net income (loss) per diluted share	$	0.14	$	(0.46	)	$	0.14	$	(0.50	)
Shares used in calculating basic net income (loss) per share		43,528		40,187			42,502		39,267
Shares used in calculating diluted net income (loss) per share		47,330		40,187			46,252		39,267

See accompanying notes to the condensed consolidated financial statements.

4

Illumina, Inc.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

(In thousands)

	Six Months Ended
	July 2, 2006			July 3, 2005
Operating activities:
Net income (loss)	$	6,664		$	(19,774	)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Acquired in-process research and development		—			15,800
Depreciation and amortization		2,559			1,669
Loss on disposal of property and equipment		20			71
Amortization of premium on investments		—			(14	)
Stock-based compensation expense		6,458			98
Amortization of gain on sale of land and building		(187	)		(187	)
Changes in operating assets and liabilities:
Accounts receivable		(5,031	)		(742	)
Inventory		(7,991	)		(1,349	)
Prepaid expenses and other current assets		(1,229	)		231
Other assets		145			—
Accounts payable and accrued liabilities		12,645			524
Accrued litigation judgment		—			(5,957	)
Other long-term liabilities		3,210			2,436
Net cash provided by (used in) operating activities		17,263			(7,194	)
Investing activities:
Cash paid for acquisition, net of cash acquired		—			(2,388	)
Investment in secured convertible debentures		(3,036	)		—
Purchases of available-for-sale securities		(4,529	)		—
Sales and maturities of available-for-sale securities		—			12,248
Purchases of property and equipment		(9,149	)		(6,232	)
Cash paid for intangible assets		(15	)		—
Net cash provided by (used in) investing activities		(16,729	)		3,628
Financing activities:
Payments on long-term debt		(58	)		(27	)
Proceeds from issuance of common stock		101,088			2,935
Net cash provided by financing activities		101,030			2,908
Effect of foreign currency translation on cash and cash equivalents		(136	)		435
Net increase (decrease) in cash and cash equivalents		101,428			(223	)
Cash and cash equivalents at beginning of period		50,822			54,789
Cash and cash equivalents at end of period	$	152,250		$	54,566

See accompanying notes to the condensed consolidated financial statements.

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Illumina, Inc.

Notes to Condensed Consolidated Financial Statements

(Unaudited)

1. Summary of Significant Accounting Principles

Basis of Presentation

     The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. In management’s opinion, the accompanying financial statements reflect all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation of the results for the interim periods presented.

     Interim financial results are not necessarily indicative of results anticipated for the full year. These unaudited financial statements should be read in conjunction with the Company’s 2005 audited financial statements and footnotes included in the Company’s Annual Report on Form 10-K for the year ended January 1, 2006, as filed with the Securities and Exchange Commission (SEC) on March 6, 2006.

     The preparation of financial statements requires that management make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses, and related disclosure of contingent assets and liabilities. Actual results could differ from those estimates.

Fiscal Year

     The Company’s fiscal year consists of 52 or 53 weeks ending the Sunday closest to December 31, with quarters of 13 or 14 weeks ending the Sunday closest to March 31, June 30, and September 30. The quarters and six months ended July 2, 2006 and July 3, 2005 were both 13 and 26 weeks, respectively.

Reclassifications

     Certain prior period amounts have been reclassified to conform to current period presentation.

Revenue Recognition

     The Company’s revenue is generated primarily from the sale of products and services. Product revenue consists of sales of arrays, reagents, instrumentation and oligos. Service and other revenue consists of revenue received for performing genotyping services, extended warranty sales and revenue earned from milestone payments.

     The Company recognizes revenue in accordance with the guidelines established by SEC Staff Accounting Bulletin (SAB) No. 104. Under SAB No. 104, revenue cannot be recorded until all of the following criteria have been met: persuasive evidence of an arrangement exists; delivery has occurred or services have been rendered; the seller’s price to the buyer is fixed or determinable; and collectibility is reasonably assured. All revenue is recorded net of any applicable allowances for returns or discounts.

     Revenue for product sales is recognized generally upon shipment and transfer of title to the customer, provided no significant obligations remain and collection of the receivables is reasonably assured. Revenue from the sale of instrumentation is recognized when earned, which is generally upon shipment. However, in the case of BeadLabs, revenue is recognized upon the completion of installation, training and customer acceptance. Revenue for genotyping services is recognized when earned, which is generally at the time the genotyping analysis data is delivered to the customer or as specific milestones are achieved.

     In order to assess whether the price is fixed and determinable, the Company ensures there are no refund rights. If payment terms are based on future performance, the Company defers revenue recognition until the price becomes fixed and determinable. The Company assesses collectibility based on a number of factors, including past transaction history with the customer and the creditworthiness of the customer. If the Company determines that collection of a payment is not reasonably assured, revenue

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recognition is deferred until the time collection becomes reasonably assured, which is generally upon receipt of payment. Changes in judgments and estimates regarding application of SAB No. 104 might result in a change in the timing or amount of revenue recognized.

     Sales of instrumentation generally include a standard one-year warranty. The Company also sells separately priced maintenance (extended warranty) contracts, which are generally for one or two years, upon the expiration of the initial warranty. Revenue for extended warranty sales is recognized ratably over the term of the extended warranty period. Reserves are provided for estimated product warranty expenses at the time the associated revenue is recognized. If the Company were to experience an increase in warranty claims or if costs of servicing its products under warranty were greater than its estimates, gross margins could be adversely affected.

     While the majority of its sales agreements contain standard terms and conditions, the Company does enter into agreements that contain multiple elements or non-standard terms and conditions. Emerging Issues Task Force (EITF) No. 00-21,Revenue Arrangements with Multiple Deliverables, provides guidance on accounting for arrangements that involve the delivery or performance of multiple products, services, or rights to use assets within contractually binding arrangements. Significant contract interpretation is sometimes required to determine the appropriate accounting, including whether the deliverables specified in a multiple element arrangement should be treated as separate units of accounting for revenue recognition purposes, and if so, how the price should be allocated among the deliverable elements, when to recognize revenue for each element, and the period over which revenue should be recognized. The Company recognizes revenue for delivered elements only when it determines that the fair values of undelivered elements are known and there are no uncertainties regarding customer acceptance.

     Some of the Company’s agreements contain multiple elements that include milestone payments. Revenue from a milestone achievement is recognized when earned, as evidenced by acknowledgement from the Company’s collaborator, provided that (i) the milestone event is substantive and its achievability was not reasonably assured at the inception of the agreement, (ii) the milestone represents the culmination of an earnings process, (iii) the milestone payment is non-refundable and (iv) the performance obligations for both the Company and its collaborators after the milestone achievement will continue at a level comparable to the level before the milestone achievement. If all of these criteria are not met, the milestone achievement is recognized over the remaining minimum period of the Company’s performance obligations under the agreement. The Company defers non-refundable upfront fees received under its collaborations and recognizes them over the period the related services are provided or over the estimated collaboration term using various factors specific to the collaboration. Advance payments received in excess of amounts earned are classified as deferred revenue until earned.

     Research revenue consists of amounts earned under research agreements with government grants, which is recognized in the period during which the related costs are incurred.

Cash and Cash Equivalents

     Cash and cash equivalents are comprised of short-term, highly liquid investments primarily consisting of money market-type funds.

Investments

     The Company applies Statement of Financial Accounting Standards (SFAS) No. 115,Accounting for Certain Investments in Debt and Equity Securities, to its investments. Under SFAS No. 115, the Company classifies its investments as “available-for-sale” and records such assets at estimated fair value in the balance sheet, with unrealized gains and losses, if any, reported in stockholders’ equity. The Company invests excess cash balances in marketable debt securities, primarily government securities and corporate bonds and notes, with strong credit ratings or short maturity mutual funds providing similar financial returns. The Company limits the amount of investment exposure as to institutions, maturity and investment type.

Stock-Based Compensation

     On January 2, 2006, the Company adopted SFAS No. 123 (revised 2004),Share-Based Payment, which addresses the accounting for stock-based payment transactions in which an enterprise receives employee services in exchange for (a) equity instruments of the enterprise or (b) liabilities that are based on the fair value of the enterprise’s equity instruments or that may be settled by the issuance of such equity instruments. In January 2005, the SEC issued SAB No. 107, which provides supplemental implementation guidance for SFAS No. 123R. SFAS No. 123R eliminates the ability to account for stock-based compensation transactions using the intrinsic value

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method under Accounting Principles Board (APB) Opinion No. 25,Accounting for Stock Issued to Employees, and instead generally requires that such transactions be accounted for using a fair-value-based method. The Company uses the Black-Scholes-Merton option-pricing model to determine the fair-value of stock-based awards under SFAS No. 123R, consistent with that used for pro forma disclosures under SFAS No. 123,Accounting for Stock-Based Compensation, in prior periods. The Company has elected to use the modified prospective transition method as permitted by SFAS No. 123R and, accordingly, prior periods have not been restated to reflect the impact of SFAS No. 123R. The modified prospective transition method requires that stock-based compensation expense be recorded for all new and unvested stock options, restricted stock and employee stock purchase plan (ESPP) shares that are ultimately expected to vest as the requisite service is rendered. Stock-based compensation expense for awards granted prior to January 2, 2006 is based on the grant date fair-value as determined under APB No. 25. For the three and six months ended July 2, 2006, the Company has recorded an incremental $3.3 million and $6.5 million, respectively, of stock-based compensation expense as a result of the adoption of SFAS No. 123R. Net income per diluted share was reduced by $0.07 and $0.14, respectively, for the three and six months ended July 2, 2006 as a result of the adoption of SFAS No. 123R. Stock-based compensation expense capitalized as part of inventory as of July 2, 2006 was approximately $0.1 million. As of July 2, 2006, approximately $32.3 million of total unrecognized compensation cost related to stock options, restricted stock and ESPP shares are expected to be recognized over a weighted-average period of approximately two years.

     Prior to the adoption of SFAS No. 123R, the Company measured compensation expense for its employee stock-based compensation plans using the intrinsic value method prescribed by APB Opinion No. 25. The Company applied the disclosure provisions of SFAS No. 123, as amended by SFAS No. 148,Accounting for Stock-Based Compensation — Transition and Disclosure, as if the fair-value-based method had been applied in measuring stock-based compensation expense. Under APB Opinion No. 25, when the exercise price of the Company’s employee stock options was not less than the market price of the underlying stock on the date of the grant, no compensation expense was recognized.

     The following table illustrates the effect on net loss and basic and diluted net loss per share as if the Company had applied the fair value recognition provisions of SFAS No. 123 to stock-based compensation during the specified reporting periods (in thousands, except per share amounts):

	Three Months Ended			Six Months Ended
	July 3, 2005			July 3, 2005
Net loss as reported	$	(18,539	)	$	(19,774	)
Add: Stock-based compensation expense recorded		41			98
Less: Assumed stock-based compensation expense		(1,641	)		(4,041	)
Pro forma net loss	$	(20,139	)	$	(23,717	)
Basic and diluted net loss per share:
As reported	$	(0.46	)	$	(0.50	)
Pro forma	$	(0.50	)	$	(0.60	)

     SFAS No. 123R requires the use of a valuation model to calculate the fair-value of stock-based awards. The Company has elected to use the Black-Scholes-Merton option-pricing model, which incorporates various assumptions including volatility, expected life, and interest rates. The expected volatility is based on the historical volatility of the Company’s common stock over the most recent period generally commensurate with the estimated expected life of the Company’s stock options, adjusted for the impact of unusual fluctuations not reasonably expected to recur and other relevant factors. The expected life of an award is based on historical experience and on the terms and conditions of the stock awards granted to employees.

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     The assumptions used for the specified reporting periods and the resulting estimates of weighted-average fair value per share of options granted and for stock purchases under the ESPP during those periods are as follows:

	Three Months Ended						Six Months Ended
	July 2, 2006			July 3, 2005			July 2, 2006			July 3, 2005
Interest rate – stock options		4.92 – 5.02	%		3.87	%		4.36 – 5.02	%		3.88	%
Interest rate – stock purchases		4.85 – 4.86	%		4.08	%		4.85 – 4.86	%		4.08	%
Volatility – stock options		75	%		90	%		75 – 77	%		90	%
Volatility – stock purchases		76	%		90	%		76	%		90	%
Expected life – stock options	6 years			5 years			6 years			5 years
Expected life – stock purchases	6 – 12 months			6 – 12 months			6 – 12 months			6 – 12 months
Expected dividend yield		0	%		0	%		0	%		0	%
Weighted average fair value per share of options granted	$	18.33		$	6.81		$	16.03		$	6.60
Weighted average fair value per share of employee stock purchases	$	8.12		$	3.64		$	8.12		$	3.64

Net Income (Loss) per Share

     Basic and diluted net income (loss) per share is presented in conformity with SFAS No. 128,Earnings per Share, for all periods presented. In accordance with SFAS No. 128, basic and net income (loss) per share is computed using the weighted-average number of shares of common stock outstanding during the period, less shares subject to repurchase. Diluted net income (loss) per share is typically computed using the weighted average number of common and dilutive common equivalent shares from stock options using the treasury stock method. The following table presents the calculation of weighted-average shares used to calculate basic and diluted net income (loss) per share (in thousands):

	Three Months Ended						Six Months Ended
	July 2, 2006			July 3, 2005			July 2, 2006			July 3, 2005
Weighted-average shares outstanding		43,567			40,232			42,541			39,325
Less: Weighted-average shares of common stock subject to repurchase		(39	)		(45	)		(39	)		(58	)
Weighted-average shares used in calculating basic net income (loss) per share		43,528			40,187			42,502			39,267
Plus: Effect of dilutive potential common shares		3,802			—			3,750			—
Weighted-average shares used in calculating diluted net income (loss) per share		47,330			40,187			46,252			39,267

     The total number of shares excluded from the calculation of diluted net loss per share, prior to application of the treasury stock method, was 7,307,818 for the three and six months ended July 3, 2005.

Comprehensive Income (Loss)

     Comprehensive income (loss) is comprised of net income (loss) and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on the Company’s available-for-sale securities, changes in the fair value of derivatives designated as effective cash flow hedges, and foreign currency translation adjustments.

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

	Three Months Ended					Six Months Ended
	July 2, 2006		July 3, 2005			July 2, 2006			July 3, 2005
Net income (loss)	$	6,768	$	(18,539	)	$	6,664		$	(19,774	)
Foreign currency translation adjustments		123		77			160			108
Unrealized gain on investments		123		7			81			29
Unrealized loss on cash flow hedges		—		—			(10	)		—
Total other comprehensive income (loss)	$	7,014	$	(18,455	)	$	6,895		$	(19,637	)

Recent Accounting Pronouncements

     In July 2006, the Financial Accounting Standards Board (FASB) issued FASB Interpretation (FIN) No. 48,Accounting for Uncertainty in Income Taxes – an interpretation of FASB Statement No. 109, which clarifies the accounting for uncertainty in tax positions. FIN No. 48 requires that we recognize the impact of a tax position in our financial statements if that position is more likely than not of being sustained on audit, based on the technical merits of the position. The provisions of FIN No. 48 are effective as of the

9

beginning of the Company’s 2007 fiscal year, with the cumulative effect of the change in accounting principle recorded as an adjustment to opening retained earnings. We do not expect the adoption of FIN No. 48 to have a material impact on our financial reporting, and we are currently evaluating the impact, if any, the adoption of FIN No. 48 will have on our disclosure requirements.

2. Acquisition of CyVera Corporation

     On April 8, 2005, the Company completed its acquisition of 100% of the voting equity interests of CyVera Corporation (CyVera). Pursuant to an Agreement and Plan of Merger, dated as of February 22, 2005 (the Merger Agreement), by and among Illumina, Semaphore Acquisition Sub, Inc., a Delaware corporation and wholly-owned subsidiary of Illumina (Merger Sub), and CyVera, Merger Sub merged with and into CyVera, with CyVera surviving as a wholly-owned subsidiary of Illumina. The results of CyVera’s operations have been included in the Company’s consolidated financial statements since the acquisition date of April 8, 2005.

     CyVera was created in October 2003 to commercialize its VeraCode technology and optical instrumentation/reader concepts. The Company believes that the CyVera technology will be highly complementary to the Company’s own portfolio of products and services; will enhance the Company’s capabilities to service its existing customers; and will accelerate the development of additional technologies, products and services. The Company believes that integrating CyVera’s capabilities with the Company’s technologies will better position the Company to address the emerging biomarker research and development and in-vitro and molecular diagnostic markets. The Company plans to launch its first products resulting from this acquisition by the end of 2006.

     Pursuant to the Merger Agreement, the Company issued 1.6 million shares (the Shares) of common stock, paid $2.3 million in cash and assumed the net liabilities of CyVera. In addition, the Company assumed the outstanding stock options of CyVera. Approximately 250,000 of the Shares were deposited into an escrow account with a bank to satisfy any claims for indemnification made by the Company or CyVera pursuant to the Merger Agreement. No claims for indemnification were made and, as of July 2, 2006, the escrow agent has released the shares from escrow.

     The results of CyVera’s operations have been included in the accompanying condensed consolidated financial statements from the date of the acquisition. The total cost of the acquisition is as follows (in thousands):

Fair market value of securities issued, net	$	14,433
Cash paid		2,291
Transaction costs		681
Fair market value of options assumed		394
Total purchase price	$	17,799

     The fair value of the Shares was determined based on the average closing price of the Company’s common stock for five trading days preceding, and following, February 22, 2005 (the date the transaction was announced). The Company believes that this time period gives proper consideration to matters such as price fluctuations and quantities traded and represents a reasonable period before and after the date on which the terms of the acquisition were agreed. Based on these closing prices, the Company estimated the fair value of its common stock to be $9.167 per share, which equates to a total fair value of $14.4 million.

     The final purchase price allocation is shown below (in thousands):

Cash	$	4
Prepaid expenses		12
Fixed assets		349
Deferred compensation		196
Accounts payable and accrued liabilities		(432	)
Debt assumed		(255	)
Net book value of net liabilities acquired		(126	)
In-process research and development		15,800
Goodwill		2,125
Net assets acquired	$	17,799

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     In accordance with SFAS No. 142,Goodwill and Other Intangible Assets, the goodwill is not amortized, but will be subject to a periodic assessment for impairment by applying a fair-value-based test. None of this goodwill is expected to be deductible for tax purposes. The Company performs its annual test for impairment of goodwill in May of each year. The Company is required to perform a periodic assessment between annual tests in certain circumstances. The Company has performed its annual test of goodwill and has determined there was no impairment of goodwill as of May 1, 2006 or July 2, 2006.

     The Company allocated $15.8 million of the purchase price to in-process research and development projects. In-process research and development (IPR&D) represents the estimated fair value of acquired, to-be-completed research projects. At the acquisition date, CyVera’s ongoing research and development initiatives were primarily involved with the development of its VeraCode technology and optical instrumentation/reader concepts. These two projects were approximately 50% and 25%, respectively, complete at the date of acquisition.

     The value assigned to purchased IPR&D was determined by estimating the costs to develop the acquired technology into commercially viable products, estimating the resulting net cash flows from the projects, and discounting the net cash flows to their present value. The revenue projections used to value the IPR&D were, in some cases, reduced based on the probability of developing a new technology, and considered the relevant market sizes and growth factors, expected trends in technology, and the nature and expected timing of new product introductions by the Company and its competitors. The resulting net cash flows from such projects are based on the Company’s estimates of cost of sales, operating expenses, and income taxes from such projects. The rates utilized to discount the net cash flows to their present value were based on estimated cost of capital calculations. Due to the nature of the forecast and the risks associated with the projected growth and profitability of the developmental projects, discount rates of 30% were considered appropriate for the IPR&D. The Company believes that these discount rates were commensurate with the projects’ stage of development and the uncertainties in the economic estimates described above.

     If these projects are not successfully developed, the sales and profitability of the combined company may be adversely affected in future periods. The Company believes that the foregoing assumptions used in the IPR&D analysis were reasonable at the time of the acquisition. No assurance can be given, however, that the underlying assumptions used to estimate expected project sales, development costs or profitability are accurate or the events associated with such projects will transpire as estimated. At the date of acquisition, the development of these projects had not yet reached technological feasibility, and the research and development in progress had no alternative future uses. Accordingly, the $15.8 million initially allocated to IPR&D was charged to expense in the second quarter of 2005.

     The following unaudited pro forma information shows the results of the Company’s operations for the specified reporting periods as though the acquisition had occurred as of the beginning of those periods (in thousands, except per share data):

	Three Months Ended			Six Months Ended
	July 3, 2005			July 3, 2005
Revenue	$	15,824		$	30,972
Net loss	$	(2,746	)	$	(5,225	)
Basic and diluted net loss per share	$	(0.07	)	$	(0.13	)

     The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the actual results of operations had the acquisition taken place as of the beginning of the period presented, or the results that may occur in the future. The pro forma results exclude the $15.8 million non-cash acquired IPR&D charge recorded upon the closing of the acquisition during the second quarter of 2005.

3. Segment Information

     The Company has determined that, in accordance with SFAS No. 131,Disclosures about Segments of an Enterprise and Related Information, it operates in one segment as it only reports operating results on an aggregate basis to chief operating decision makers of the Company.

4. Inventories

     Inventories are stated at the lower of standard cost (which approximates actual cost) or market. Inventory includes raw materials and finished goods that may be used in the research and development process and such items are expensed as consumed. Provisions

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for slow moving, excess and obsolete inventories are provided based on product life cycle and development plans, product expiration and quality issues, historical experience and inventory levels. The components of net inventories are as follows (in thousands):

	July 2, 2006		January 1, 2006
Raw materials	$	7,206	$	4,575
Work in process		7,987		4,546
Finished goods		2,131		1,188
	$	17,324	$	10,309

5. Intangible Assets

     Intangible assets consist of license agreements and acquired technology. The cost of the Company’s license agreements was $859,450 and the Company has amortized $798,867 through July 2, 2006.

6. Warranties

     The Company generally provides a one-year warranty on instrument systems. At the time revenue is recognized, the Company establishes an accrual for estimated warranty expenses associated with system sales. This expense is recorded as a component of cost of product revenue. Estimated warranty expenses associated with extended maintenance contracts are recorded as cost of revenue ratably over the term of the maintenance contract.

     Changes in the Company’s warranty liability during the specified reporting period are as follows (in thousands):

Balance at January 1, 2006	$	751
Additions charged to cost of revenue		663
Repairs and replacements		(391	)
Balance at July 2, 2006	$	1,023

7. Accounts Payable and Accrued Liabilities

     Accounts payable and accrued liabilities consist of the following (in thousands):

	July 2, 2006		January 1, 2006
Accounts payable	$	12,195	$	7,390
Compensation		6,172		4,922
Legal and other professional fees		1,937		2,311
Short-term deferred revenue		2,538		1,937
Customer deposits		7,466		1,361
Reserve for product warranties		1,023		751
Other		3,426		2,928
	$	34,757	$	21,600

8. Stockholder’s Equity

     On May 24, 2006, the Company completed a public offering of 4,025,000 shares of its common stock at a public offering price of $25.50 per share. This transaction generated net proceeds of $96.5 million for the Company and was completed pursuant to a shelf registration statement initially filed with SEC in May 2006.

     As of July 2, 2006, the Company had 45,952,517 shares of common stock outstanding, of which 4,813,742 shares were sold to employees and consultants subject to restricted stock agreements. The restricted common shares vest in accordance with the provisions of the agreements, generally over five years. All unvested shares are subject to repurchase by the Company at the original purchase price. As of July 2, 2006, 39,000 shares of common stock were subject to repurchase. In addition, the Company also issued 12,000 shares for a restricted stock award to an employee under the Company’s 2005 Stock and Incentive Plan based on service performance. These shares vest monthly over a three-year period.

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2005 Stock and Incentive Plan

     In June 2005, the stockholders of the Company approved the 2005 Stock and Incentive Plan (the 2005 Stock Plan). Upon adoption of the 2005 Stock Plan, issuance of options under the Company’s existing 2000 Stock Plan ceased. The 2005 Stock Plan provides that an aggregate of up to 11,542,358 shares of the Company’s common stock be reserved and available to be issued. In addition, the 2005 Stock Plan provides for an automatic annual increase in the shares reserved for issuance by the lesser of 5% of outstanding shares of the Company’s common stock on the last day of the immediately preceding fiscal year, 1,200,000 shares or such lesser amount as determined by the Company’s board of directors. As of July 2, 2006, options to purchase 3,511,195 shares remained available for future grant under the 2005 Stock Plan.

     The Company’s stock option activity under all stock option plans during the specified reporting period is as follows:

				Weighted-
				Average
	Options			Exercise Price
Outstanding at January 1, 2006		7,325,431		$	7.96
Granted		1,775,650		$	23.07
Exercised		(517,776	)	$	6.80
Cancelled		(215,471	)	$	10.46
Outstanding at July 2, 2006		8,367,834		$	11.17

     Following is a further breakdown of the options outstanding as of July 2, 2006:

									Weighted
			Weighted						Average
			Average						Exercise
			Remaining		Weighted				Price
Range of	Options		Life		Average		Options		of Options
Exercise Prices	Outstanding		in Years		Exercise Price		Exercisable		Exercisable
$0.03 – 5.15		1,422,177		6.40	$	3.45		905,442	$	3.37
$5.25 – 7.90		1,732,781		6.84	$	6.67		693,250	$	6.81
$7.94 – 8.76		1,493,495		7.84	$	8.53		505,238	$	8.51
$8.89 – 13.69		1,667,011		7.95	$	11.12		637,422	$	10.32
$13.74 – 23.38		1,463,170		9.00	$	20.30		224,842	$	18.59
$24.00 – 45.00		589,200		9.73	$	27.22		13,333	$	33.32
$0.03 – 45.00		8,367,834		7.75	$	11.17		2,979,527	$	7.81

     Aggregate intrinsic value of options outstanding and options exercisable as of July 2, 2006 was $154.8 million and $65.2 million, respectively. Aggregate intrinsic value represents the difference between the Company’s closing stock price on the last trading day of the fiscal period, which was $29.66 as of June 30, 2006, and the exercise price multiplied by the number of options outstanding. Total intrinsic value of options exercised was $9.7 million for the six months ended July 2, 2006.

2000 Employee Stock Purchase Plan

     In February 2000, the board of directors and stockholders adopted the 2000 Employee Stock Purchase Plan (the Purchase Plan). A total of 4,827,988 shares of the Company’s common stock have been reserved for issuance under the Purchase Plan. The Purchase Plan permits eligible employees to purchase common stock at a discount, but only through payroll deductions, during defined offering periods.

     The price at which stock is purchased under the Purchase Plan is equal to 85% of the fair market value of the common stock on the first or last day of the offering period, whichever is lower. The initial offering period commenced in July 2000. In addition, the Purchase Plan provides for annual increases of shares available for issuance under the Purchase Plan beginning with fiscal 2001. 118,740 shares were issued under the Purchase Plan during the six months ended July 2, 2006. As of July 2, 2006, there were 2,910,590 shares available for issuance under the Purchase Plan.

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9. Commitments and Long-Term Debt

Deferred Gain / Building Loan

     In July 2000, the Company entered into a ten-year lease to rent space in two newly constructed buildings in San Diego that are now occupied by the Company. That lease contained an option to purchase the buildings together with certain adjacent land that has been approved for construction of an additional building. The Company exercised that option and purchased the properties in January 2002 and assumed a $26.0 million, ten-year mortgage on the property at a fixed interest rate of 8.36%. The Company made monthly payments of $208,974, representing interest and principal, through August 2004.

     In June 2004, the Company entered into a conditional agreement to sell its land and buildings for $42.0 million and to lease back such property for an initial term of ten years. The sale was completed in August 2004 at which time the lease was signed. After the repayment of the remaining $25.2 million debt and other related transaction expenses, the Company received $15.5 million in net cash proceeds. The Company removed the land and net book value of the buildings of $36.9 million from its balance sheet, deferred the resulting $3.7 million gain on the sale of the property, and is amortizing the deferred gain over the ten-year lease term in accordance with SFAS No. 13,Accounting for Leases.

Operating Leases

     In August 2004, the Company entered into a ten-year lease for its San Diego facility after the land and building were sold (as discussed above). Under the terms of the lease, the Company paid a $1.9 million security deposit and is currently paying monthly rent of $328,202 with an annual increase of 3% in each subsequent year through August 2014. The lease contains an option to renew for three additional periods of five years each. In accordance with SFAS No. 13, the Company records rent expense on a straight-line basis and the resulting deferred rent is included in other long-term liabilities in the accompanying condensed consolidated balance sheets. The Company also leases office space for a facility in Connecticut, an additional distribution and storage facility in San Diego and for four foreign facilities located in Japan, Singapore, China and the Netherlands under non-cancelable operating leases that expire at various times through June 2011. These leases contain renewal options ranging from one to five years.

10. Legal Proceedings

     The Company has incurred substantial costs in defending itself against patent infringement claims, and expects to devote substantial financial and managerial resources to protect its intellectual property and to defend against the claims described below as well as any future claims asserted against it.

Affymetrix Litigation

     On July 26, 2004, Affymetrix, Inc. (Affymetrix) filed a complaint in the U.S. District Court for the District of Delaware alleging that the use, manufacture and sale of the Company’s BeadArray products and services, including the Company’s Array Matrix and BeadChip products, infringe six Affymetrix patents. Affymetrix seeks an injunction against the sale of products, if any, that are determined to be infringing these patents, unspecified monetary damages, interest and attorneys’ fees. On September 15, 2004, the Company filed its answer to Affymetrix’ complaint, seeking declaratory judgments from the court that it does not infringe the Affymetrix patents and that such patents are invalid, and the Company filed counterclaims against Affymetrix for unfair competition and interference with actual and prospective economic advantage.

     On February 15, 2006, the court allowed the Company to file its first amended answer and counterclaims, adding allegations of inequitable conduct with respect to all six asserted Affymetrix patents, violation of Section 2 of the Sherman Act, and unclean hands. In March 2006, Affymetrix notified the Company of its decision to drop one of the six patents from the suit, and of its intention to assert infringement of certain additional claims of the remaining five patents. The Company has filed a motion to preclude Affymetrix from asserting infringement of those additional claims. On April 20, 2006, the court held a claims construction hearing. Rulings on the Company’s motion and on claims construction could be issued at any time. On June 30, 2006, the court dismissed the patent Affymetrix had sought to withdraw from the suit. Affymetrix and the Company filed summary judgment motions by the July 14, 2006 court-established deadline. Trial is scheduled for October 16, 2006. The Company believes it has meritorious defenses against each of the infringement claims alleged by Affymetrix and intends to defend vigorously against this suit. However, the Company cannot be sure that it will prevail in this matter. Any unfavorable determination, and in particular, any significant cash amounts

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required to be paid by the Company or prohibition of the sale of its products and services, could result in a material adverse effect on its business, financial condition and results of operations.

Dr. Anthony W. Czarnik v. Illumina, Inc.

     On June 15, 2005, Dr. Anthony Czarnik, a former employee, filed suit against the Company in the U.S. District Court for the District of Delaware seeking correction of inventorship of certain of the Company’s patents and patent applications, and alleging that the Company committed inequitable conduct and fraud in not naming him as an inventor. Dr. Czarnik seeks an order requiring the Company and the U.S. Patent and Trademark Office to correct the inventorship of certain of the Company’s patents and patent applications by adding Dr. Czarnik as an inventor, a judgment declaring certain of the Company’s patents and patent applications unenforceable, unspecified monetary damages and attorney’s fees. On August 4, 2005, the Company filed a motion to dismiss the complaint for lack of standing and failure to state a claim. While this motion was pending, Dr. Czarnik filed an amended complaint on September 23, 2005. On October 7, 2005, the Company filed a motion to dismiss the amended complaint for lack of standing and failure to state a claim. On July 13, 2006, the court granted the Company’s motion to dismiss the counts of Dr. Czarnik’s complaint dealing with correction of inventorship in pending applications and inequitable conduct. The Company has responded to the two remaining counts of the complaint (correction of inventorship in issued patents, and fraud). There has been no trial date set for this case. The Company believes it has meritorious defenses against these claims.

11. Collaboration Agreements

Invitrogen Corporation

     In December 2004, the Company entered into a strategic collaboration with Invitrogen Corporation (Invitrogen). The goal of the collaboration is to combine the Company’s expertise in oligonucleotide manufacturing with the sales, marketing and distribution capabilities of Invitrogen. In connection with the collaboration, the Company has developed the next generation Oligator^® DNA synthesis technology. This technology includes both plate- and tube-based capabilities. Under the terms of the agreement, Invitrogen paid the Company an upfront non-refundable collaboration payment of $2.3 million during the first quarter of 2005. Additionally, Invitrogen made a milestone payment of $1.1 million to the Company in November 2005 upon achievement of a milestone event under the terms of the collaboration.

     The Company began manufacturing and shipping the plate-based and certain tube-based oligo products under the collaboration in the third quarter of 2005 and, therefore, has begun to amortize the upfront collaboration payment of $2.3 million as product revenue over the life of the agreement on a straight-line basis. The unamortized portion of the collaboration payment has been recorded as short- and long-term deferred revenue. The Company recorded the $1.1 million milestone payment in service and other revenue upon achievement of the milestone during the fourth quarter of 2005. The Company recorded revenue related to this milestone payment upon its achievement, as evidenced by acknowledgment from Invitrogen and due to the fact that (i) the milestone event is substantive and its achievability was not reasonably assured at the inception of the agreement, (ii) the milestone represents the culmination of an earnings process, (iii) the milestone payment is non-refundable and (iv) the performance obligations for both the Company and Invitrogen after the milestone achievement will continue at a level comparable to the level before the milestone achievement. In addition, the agreement provides for the transfer of the Company’s Oligator technology into two Invitrogen facilities outside North America. The Company recognizes product revenue upon shipment of collaboration products based on the Company’s actual manufacturing cost. Collaboration profit, as defined in the collaboration agreement, from the sale of collaboration products is divided equally between the two companies and is recorded as product revenue.

deCODE genetics

     In May 2006, the Company and deCODE genetics, ehf. (deCODE) executed a Joint Development and Licensing Agreement (the Development Agreement). Pursuant to the Development Agreement, the parties agreed to collaborate exclusively to develop, validate and commercialize specific diagnostic tests for variants in genes involved in three disease-related pathways: the gene-encoding leukotriene A4 hydrolase, linked to heart attack; the gene-encoding transcription factor 7-like 2 (TCF7L2), linked to type 2 diabetes; and the gene-encoding BARD1, linked to breast cancer. The Company and deCODE intend to develop these diagnostic tests for use on the Company’s BeadXpress system.

     Under the agreement, the Company will be responsible for the manufacturing, marketing and selling of the diagnostic products. The companies will share the development costs of these products and split the profits from sales of the diagnostics tests. The Development Agreement may be terminated as to a particular product under development if one party decides to discontinue funding

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the development of that product, and may be terminated in whole by either party if the other party commits an uncured material breach, files for bankruptcy or becomes insolvent. Under a separate supply agreement, the Company will install instrumentation at deCODE that will enable deCODE to perform whole genome association studies on up to 100,000 samples using the Company’s HumanHap300 BeadChips and associated reagents.

12. Investment in Genizon BioSciences Inc.

     In January 2006, Genizon BioSciences Inc. (Genizon), a Canadian company focused on gene discovery, purchased from the Company approximately $1.9 million in equipment and committed to purchase an additional $4.3 million in consumables. Genizon is using Illumina’s Sentrix^® HumanHap300 BeadChip along with the Infinium™ assay to perform whole-genome association studies involving thousands of members of the Quebec Founder Population. The goal of the studies is to provide understanding of the genetic origins and mechanisms of common diseases which may then lead to possible drug targets.

     In March 2006, the Company entered into a Subscription Agreement for Secured Convertible Debentures with Genizon. Pursuant to the agreement, the Company purchased a secured convertible debenture (the debenture) of Genizon and certain warrants for CDN$3.5 million (approximately U.S. $3.0 million).

     The debenture is convertible, automatically upon the occurrence of a “liquidity event,” as defined in the debenture, into Class H Preferred Shares of Genizon. Upon the occurrence of certain events, Illumina may be entitled to receive additional shares of Genizon’s Class H Preferred Shares. The debenture matures two years from issuance and bears interest, payable semiannually, at a rate of 5% per annum for the first year and 12.5% per annum for the second year. Unless the debenture is converted before maturity, 112.5% of the principal amount of the debenture is due upon maturity. Illumina also received warrants to purchase 226,721 shares of Genizon Class H Preferred Shares at an exercise price of $1.5437 per share.

     As of July 2, 2006, the debenture was recorded at face value, which is the fair value, and is classified in accordance with SFAS No. 115,Accounting for Certain Investments in Debt and Equity Securities, as an available-for-sale security.

     The Company has concluded that the purchase of the debenture and the concurrent purchase by Genizon of Illumina’s products are “linked” transactions under guidance contained in EITF No. 00-21,Revenue Arrangements with Multiple Deliverables. Since the transactions are considered “linked,” the Company has deferred approximately $3.0 million of revenue (the face value of the Debentures) as of July 2, 2006, related to the Genizon product shipments. The deferred revenue is classified as a long-term liability as of July 2, 2006. This amount is expected to remain in deferred revenue until Genizon settles the Debenture in cash or when a liquidity event occurs that generates cash or a security that is readily convertible into cash. The Company has also deferred approximately $1.1 million of costs related to product shipments to Genizon as a long-term asset as of July 2, 2006. All Genizon shipments that generate revenue over the face value of the debenture will be evaluated under the Company’s revenue recognition policy, which is outlined in Note 1.

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

     This discussion and analysis should be read in conjunction with our financial statements and accompanying notes included in this Quarterly Report on Form 10-Q and the financial statements and notes thereto for the year ended January 1, 2006 included in the Company’s Annual Report on Form 10-K. Operating results are not necessarily indicative of results that may occur in future periods.

     The discussion and analysis in this Quarterly Report on Form 10-Q contain forward-looking statements that involve risk and uncertainties, such as statements of our plans, objectives, expectations and intentions. Words such as “anticipate,” “believe,” “continue,” “estimate,” “expect,” intend,” “may,” “plan,” “potential,” “predict,” “project,” or similar words or phrases, or the negatives of these words, may identify forward-looking statements, but the absence of these words does not necessarily mean that a statement is not forward-looking. Examples of forward-looking statements include, among others, statements regarding the integration of CyVera’s technology with our existing technology, the commercial launch of new products, including products based on CyVera’s technology, and the duration which our existing cash and other resources is expected to fund our operating activities.

     Forward-looking statements are subject to known and unknown risks and uncertainties and are based on potentially inaccurate assumptions that could cause actual results to differ materially from those expected or implied by the forward-looking statements. Factors that could cause or contribute to these differences include, but are not limited to, those discussed in the subsection entitled “Item 1A. Risk Factors.” below as well as those discussed elsewhere. Accordingly, you should not unduly rely on these forward-looking statements, which speak only as of the date of this Quarterly Report. We undertake no obligation to publicly revise these

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forward-looking statements to reflect circumstances or events after the date of this Quarterly Report or to reflect the occurrence of unanticipated events. You should, however, review the factors and risks we describe in the reports we file from time to time with the Securities and Exchange Commission (SEC).

Overview

     We develop, manufacture and market next-generation tools for the large-scale analysis of genetic variation and biological function. Understanding genetic variation and biological function is critical to the development of personalized medicine, a key goal of genomics. Using our technologies, we have developed a comprehensive line of products that are designed to provide the performance, throughput, cost effectiveness and flexibility necessary to enable researchers in the life sciences and pharmaceutical industries to perform the billions of tests necessary to extract medically valuable information from advances in genomics and proteomics. This information is expected to correlate genetic variation and biological function with particular disease states, enhancing drug discovery and clinical research, allowing diseases to be detected earlier and permitting better choices of drugs for individual patients.

     In 2001, we began commercial sale of short pieces of DNA called oligonucleotides, which we refer to as oligos, manufactured using our proprietary Oligator technology. We believe our Oligator technology is more cost effective than competing technologies, and this advantage enabled us to market our oligos under a price leadership strategy while still achieving attractive gross margins.

     In 2001, we commercialized the first implementation of our BeadArray technology, the Sentrix Array Matrix. This is a disposable matrix of 96 fiber optic bundles arranged in a pattern that matches the standard 96-well microtiter plate. Each fiber optic bundle may perform more than 1,500 unique assays, which enables researchers to perform focused genotyping experiments in a high-throughput format. This format was also used to initiate our single nucleotide polymorphism (SNP) genotyping services product line. As a result of the increasing market acceptance of our high throughput, low cost BeadArray technology, we have entered into genotyping service contracts with many leading genotyping centers.

     Our production-scale BeadLab is a turn-key platform that includes all hardware and software necessary to enable researchers to perform genetic analysis research on what we believe is an unprecedented scale. This system is being marketed to a small number of high throughput genotyping users. As of July 2, 2006, we have installed and recorded revenue for 13 BeadLabs.

     In 2003, we announced the launch of several new products, including 1) a new array format, the Sentrix BeadChip, which significantly expands market opportunities for our BeadArray technology and provides increased experimental flexibility for life science researchers; 2) a gene expression product line on both the Sentrix Array Matrix and the Sentrix BeadChip that allows researchers to analyze a focused set of genes across eight to 96 samples on a single array; and 3) a benchtop SNP genotyping and gene expression system, the BeadStation, for performing moderate-scale genotyping and gene expression using our technology. The BeadStation includes our BeadArray Reader and analysis software and is designed to match the throughput requirements and variable automation needs of individual research groups and core labs. Sales of these products began in the first quarter of 2004 and, as of July 2, 2006, we have shipped 165 BeadStations.

     In late 2004, we announced a strategic collaboration with Invitrogen Corporation (Invitrogen) to synthesize and distribute oligos. In the third quarter of 2005, we began shipping oligo products in connection with this agreement. As part of the agreement, we have developed the next generation of our Oligator DNA synthesis technology, which we have designed to support both plate- and the larger tube-based oligo markets. Invitrogen is responsible for sales, marketing and technical support and we are responsible for manufacturing. Profits from sales of collaboration products are divided equally between the two companies.

     In 2005, we began shipments of Sentrix BeadChips for whole-genome gene expression and whole-genome genotyping. The whole-genome gene expression BeadChips are designed to enable high-performance, cost-effective, whole-genome expression profiling of multiple samples on a single chip, resulting in a dramatic reduction in cost of whole-genome expression analysis. Our whole-genome expression product line includes multi-sample products for both the Human and Mouse Genomes. The whole-genome genotyping BeadChip is designed to scale to high levels of multiplexing without compromising data quality and to provide scientists the ability to query hundreds of thousands of SNPs in parallel. In the second quarter of 2005, we commenced shipment of our first whole-genome genotyping BeadChip, the HumanHap-1, which interrogates more than 100,000 SNPs in parallel.

     In the second quarter of 2005, we completed the acquisition of CyVera Corporation, a privately-held Connecticut-based company, pursuant to which CyVera became a wholly-owned subsidiary of Illumina. We believe that CyVera’s digital-microbead

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technology, renamed the VeraCode™ technology, is highly complementary to our portfolio of products and services. The acquisition is expected to provide us with a comprehensive approach to bead-based assays for biomarker research and development and in-vitro and molecular diagnostic opportunities, including those that require low-complexity as well as high-complexity testing. We expect the first products based on the VeraCode technology to be available by the end of fiscal 2006. The purchase price associated with this transaction was approximately $17.8 million. We allocated $15.8 million of this purchase price to acquired in-process research and development and charged such amount against earnings in the second quarter of 2005.

     In the fourth quarter of 2005, we began shipping the new Sentrix HumanHap300 Genotyping BeadChip to customers around the world. Using the Infinium assay, which enables us to select virtually any SNP in the genome, the HumanHap300 BeadChip allows analysis of more than 317,000 SNPs. We selected the SNPs for inclusion on the chip in collaboration with a consortium of scientists that are leaders in the genotyping field. We believe this product has quality and performance features that support our expectation that it will become an important discovery tool for researchers seeking to understand the genetic basis of common, yet complex diseases.

     In the first quarter of 2006, we introduced the Sentrix HumanHap240S BeadChip for genome-wide disease association studies. This product is a companion to our Sentrix HumanHap300 BeadChip and enables researchers to interrogate an additional 240,000 SNPs utilizing our Infinium assay. We also introduced the Sentrix HumanHap550 BeadChip in the first quarter of 2006. The Sentrix HumanHap550 BeadChip contains over 550,000 SNPs on a single microarray. The HumanHap550 BeadChip is currently shipping commercially.

     In the first quarter of 2006, we announced the availability of the Illumina AutoLoader. The AutoLoader automates BeadChip loading and scanning, which increases lab throughput. The AutoLoader is designed to support up to two BeadArray Readers simultaneously for unattended operation. We began shipment of AutoLoaders in the second quarter of 2006.

     In the second quarter of 2006, we introduced the Sentrix HumanHap650Y BeadChip. The Sentrix HumanHap650Y BeadChip contains over 650,000 SNP markers on a single microarray, which we believe provides the most comprehensive genomic coverage and highest data quality of any whole-genome genotyping product currently available.

     In the third quarter of 2006, we introduced the Sentrix HumanHap550+ BeadChip and iSelect^TM Infinium genotyping products. The Sentrix HumanHap550+ BeadChip allows customers to add up to 120,000 custom SNP markers to supplement the standard content provided on the existing Sentrix HumanHap550 BeadChip, yielding up to 670,000 markers for association studies. For focused-content applications, the new iSelect Infinium product allows customers to create a custom array of up to 60,000 SNP markers per sample with 12 samples per chip.

     Our revenue is subject to fluctuations due to the timing of sales of high-value products and service projects, the impact of seasonal spending patterns, the timing and size of research projects our customers perform, changes in overall spending levels in the life science industry, the timing and amount of government grant funding programs and other unpredictable factors that may affect our customer ordering patterns. Any significant delays in the commercial launch or any lack or delay of commercial acceptance of new products, unfavorable sales trends in our existing product lines, or impacts from the other factors mentioned above, could adversely affect our revenue growth in 2006 or cause a sequential decline in quarterly revenues. Due to the possibility of fluctuations in our revenue and net income or loss, we believe quarterly comparisons of our operating results are not a good indication of our future performance.

     Prior to 2006, we incurred substantial operating losses. As of July 2, 2006, our accumulated deficit was $137.9 million and total stockholders’ equity was $186.7 million. These losses have principally occurred as a result of the substantial resources required for the research, development and manufacturing scale up effort required to commercialize our products and services, an acquired in-process research and development charge of $15.8 million related to our acquisition of CyVera and a charge of $5.9 million related to a termination-of-employment lawsuit. We expect to continue to incur substantial costs for research, development and manufacturing scale up activities over the next several years. We will also need to increase our selling, general and administrative costs as we build up our sales and marketing infrastructure to expand and support the sale of systems, other products and services. As a result of the expected increase in expenses, we will need to increase revenue to achieve and sustain annual profitability.

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Critical Accounting Policies and Estimates

General

     Our discussion and analysis of our financial condition and results of operations is based upon our condensed consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of financial statements requires that management make estimates, assumptions and judgments with respect to the application of accounting policies that affect the reported amounts of assets, liabilities, revenues and expenses, and the disclosures of contingent assets and liabilities. Actual results could differ from those estimates. Our significant accounting policies are described in Note 1 to our condensed consolidated financial statements. Certain accounting policies are deemed critical if 1) they require an accounting estimate to be made based on assumptions that were highly uncertain at the time the estimate was made, and 2) changes in the estimate that are reasonably likely to occur, or different estimates that we reasonably could have used would have a material effect on our condensed consolidated financial statements.

     Management has discussed the development and selection of these critical accounting policies with the Audit Committee of our Board of Directors, and the Audit Committee has reviewed the disclosure. In addition, there are other items within our financial statements that require estimation, but are not deemed critical as defined above. We believe the following critical accounting policies reflect our more significant estimates and assumptions used in the preparation of the consolidated financial statements.

Revenue Recognition

     Our revenue is generated primarily from the sale of products and services. Product revenue consists of sales of arrays, reagents, instrumentation and oligos. Service and other revenue consists of revenue received for performing genotyping services, extended warranty sales and revenue earned from milestone payments.

     We recognize revenue in accordance with the guidelines established by SEC Staff Accounting Bulletin (SAB) No. 104. Under SAB No. 104, revenue cannot be recorded until all of the following criteria have been met: persuasive evidence of an arrangement exists; delivery has occurred or services have been rendered; the seller’s price to the buyer is fixed or determinable; and collectibility is reasonably assured. All revenue is recorded net of any applicable allowances for returns or discounts.

     Revenue for product sales is recognized generally upon shipment and transfer of title to the customer, provided no significant obligations remain and collection of the receivables is reasonably assured. Revenue from the sale of instrumentation is recognized when earned, which is generally upon shipment. However, in the case of BeadLabs, revenue is recognized upon the completion of installation, training and customer acceptance. Revenue for genotyping services is recognized when earned, which is generally at the time the genotyping analysis data is delivered to the customer or as specific milestones are achieved.

     In order to assess whether the price is fixed and determinable, we ensure there are no refund rights. If payment terms are based on future performance, we defer revenue recognition until the price becomes fixed and determinable. We assess collectibility based on a number of factors, including past transaction history with the customer and the creditworthiness of the customer. If we determine that collection of a payment is not reasonably assured, revenue recognition is deferred until the time collection becomes reasonably assured, which is generally upon receipt of payment. Changes in judgments and estimates regarding application of SAB No. 104 might result in a change in the timing or amount of revenue recognized.

     Sales of instrumentation generally include a standard one-year warranty. We also sell separately priced maintenance (extended warranty) contracts, which are generally for one or two years, upon the expiration of the initial warranty. Revenue for extended warranty sales is recognized ratably over the term of the extended warranty period. Reserves are provided for estimated product warranty expenses at the time the associated revenue is recognized. If we were to experience an increase in warranty claims or if costs of servicing our warrantied products were greater than our estimates, gross margins could be adversely affected.

     While the majority of our sales agreements contain standard terms and conditions, we do enter into agreements that contain multiple elements or non-standard terms and conditions. Emerging Issues Task Force (EITF) No. 00-21,Revenue Arrangements with Multiple Deliverables,provides guidance on accounting for arrangements that involve the delivery or performance of multiple products, services, or rights to use assets within contractually binding arrangements. Significant contract interpretation is sometimes required to determine the appropriate accounting, including whether the deliverables specified in a multiple element arrangement should be treated as separate units of accounting for revenue recognition purposes, and if so, how the price should be allocated among

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the deliverable elements, when to recognize revenue for each element, and the period over which revenue should be recognized. We recognize revenue for delivered elements only when we determine that the fair values of undelivered elements are known and there are no uncertainties regarding customer acceptance.

     Some of our agreements contain multiple elements that include milestone payments. Revenue from a milestone achievement is recognized when earned, as evidenced by acknowledgement from our collaborator, provided that (i) the milestone event is substantive and its achievability was not reasonably assured at the inception of the agreement, (ii) the milestone represents the culmination of an earnings process, (iii) the milestone payment is non-refundable and (iv) the performance obligations for both us and our collaborators after the milestone achievement will continue at a level comparable to the level before the milestone achievement. If all of these criteria are not met, the milestone achievement is recognized over the remaining minimum period of our performance obligations under the agreement. We defer non-refundable upfront fees received under our collaborations and recognize them over the period the related services are provided or over the estimated collaboration term using various factors specific to the collaboration. Advance payments received in excess of amounts earned are classified as deferred revenue until earned.

     Research revenue consists of amounts earned under research agreements with government grants, which is recognized in the period during which the related costs are incurred.

Allowance for Doubtful Accounts

     We maintain an allowance for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. We evaluate the collectibility of our accounts receivable based on a combination of factors. We regularly analyze customer accounts, review the length of time receivables are outstanding and review historical loss rates. If the financial condition of our customers were to deteriorate, additional allowances could be required.

Inventory Valuation

     We record adjustments to inventory for potentially excess, obsolete or impaired goods in order to state inventory at net realizable value. We must make assumptions about future demand, market conditions and the release of new products that will supercede old ones. We regularly review inventory for excess and obsolete products and components, taking into account product life cycle and development plans, product expiration and quality issues, historical experience and our current inventory levels. If actual market conditions are less favorable than anticipated, additional inventory adjustments could be required.

Contingencies

     We are subject to legal proceedings primarily related to intellectual property matters. Based on the information available at the balance sheet dates and through consultation with our legal counsel, we assess the likelihood of any adverse judgments or outcomes of these matters, as well as the potential ranges of probable losses. If losses are probable and reasonably estimable, we will record a liability in accordance with Statement of Financial Accounting Standards (SFAS) No. 5,Accounting for Contingencies. Currently we have no such liabilities recorded. This may change in the future depending upon new developments in each matter.

Goodwill and Intangible Asset Valuation

     The purchase method of accounting for acquisitions requires extensive use of accounting estimates and judgments to allocate the purchase price to the fair value of the net tangible and intangible assets acquired, including in-process research and development (IPR&D). Goodwill and intangible assets deemed to have indefinite lives are not amortized, but are subject to annual impairment tests. The amounts and useful lives assigned to other acquired intangible assets impact future amortization, and the amount assigned to IPR&D is expensed immediately. Determining the fair values and useful lives of intangible assets especially requires the exercise of judgment. While there are a number of different acceptable generally accepted valuation methods to estimate the value of intangible assets acquired, we primarily use the discounted cash flow method. This method requires significant management judgment to forecast the future operating results used in the analysis. In addition, other significant estimates are required such as residual growth rates and discount factors. The estimates we use to value and amortize intangible assets are consistent with the plans and estimates that we use to manage our business and are based on available historical information and industry estimates and averages. These judgments can significantly affect our net operating results.

     During fiscal 2001, we adopted SFAS No. 142,Goodwill and Other Intangible Assets. SFAS No. 142 requires that goodwill and certain intangible assets be assessed for impairment using fair value measurement techniques. If the carrying amount of a reporting

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unit exceeds its fair value, then a goodwill impairment test is performed to measure the amount of the impairment loss, if any. The goodwill impairment test compares the implied fair value of the reporting unit’s goodwill with the carrying amount of that goodwill. The implied fair value of goodwill is determined in the same manner as in a business combination. Determining the fair value of the implied goodwill is judgmental in nature and often involves the use of significant estimates and assumptions. These estimates and assumptions could have a significant impact on whether or not an impairment charge is recognized and also the magnitude of any such charge. Estimates of fair value are primarily determined using discounted cash flows and market comparisons. These approaches use significant estimates and assumptions, including projection and timing of future cash flows, discount rates reflecting the risk inherent in future cash flows, perpetual growth rates, determination of appropriate market comparables, and determination of whether a premium or discount should be applied to comparables. It is reasonably possible that the plans and estimates used to value these assets may be incorrect. If our actual results, or the plans and estimates used in future impairment analyses, are lower than the original estimates used to assess the recoverability of these assets, we could incur additional impairment charges. As of July 2, 2006, we had $2.1 million of goodwill. This goodwill is reported as a separate line item in the balance sheet. We have performed our annual test of goodwill and have determined there was no impairment of goodwill as of May 1, 2006 or July 2, 2006.

Stock-Based Compensation

     We account for stock-based compensation in accordance with SFAS No. 123R,Share-Based Payment. Under the provisions of SFAS No. 123R, stock-based compensation cost is estimated at the grant date based on the award’s fair-value as calculated by the Black-Scholes-Merton (BSM) option-pricing model and is recognized as expense over the requisite service period. The BSM model requires various highly judgmental assumptions including volatility, forfeiture rates, and expected option life. If any of these assumptions used in the BSM model change significantly, stock-based compensation expense may differ materially in the future from that recorded in the current period.

Income Taxes

     We record a tax provision for the anticipated tax consequences of the reported results of operations. In accordance with SFAS No. 109,Accounting for Income Taxes, the provision for income taxes is computed using the asset and liability method, under which deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between the financial reporting and tax bases of assets and liabilities, and for operating losses and tax credit carryforwards. Deferred tax assets and liabilities are measured using the currently enacted tax rates that apply to taxable income in effect for the years in which those tax assets are expected to be realized or settled. As of July 2, 2006, we have recorded a valuation allowance for the full amount of the resulting net deferred tax asset, as the future realization of the tax benefit is uncertain.

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Results of Operations

     To enhance comparability, the following table sets forth our unaudited condensed consolidated statements of operations for the specified reporting periods stated as a percentage of total revenue.

	Three Months Ended						Six Months Ended
	July 2,			July 3,			July 2,			July 3,
	2006			2005			2006			2005
Revenue:
Product revenue		88	%		80	%		85	%		80	%
Service and other revenue		11			18			14			18
Research revenue		1			2			1			2
Total revenue		100			100			100			100
Costs and expenses:
Cost of product revenue		28			26			28			26
Cost of service and other revenue		4			4			5			4
Research and development		21			46			24			43
Selling, general and administrative		31			41			35			40
Acquired in-process research and development		—			100			—			51
Total costs and expenses		84			217			92			164
Income (loss) from operations		16			(117	)		8			(64	)
Interest and other income, net		2			—			2			—
Income (loss) before income taxes		18			(117	)		10			(64	)
Provision for income taxes		2			—			1			—
Net income (loss)		16	%		(117	)%		9	%		(64	)%

Three and Six Months Ended July 2, 2006 and July 3, 2005

     Our fiscal year consists of 52 or 53 weeks ending the Sunday closest to December 31, with quarters of 13 or 14 weeks ending the Sunday closest to March 31, June 30, and September 30. The quarters and six months ended July 2, 2006 and July 3, 2005 were both 13 and 26 weeks, respectively.

Revenue

	Three Months Ended							Six Months Ended
	July 2,		July 3,		Percentage			July 2,		July 3,		Percentage
	2006		2005		Change			2006		2005		Change
	(in thousands)							(in thousands)
Product revenue	$	36,403	$	12,636		188	%	$	59,664	$	24,801		141	%
Service and other revenue		4,795		2,783		72	%		10,062		5,474		84	%
Research revenue		379		405		(6	)%		953		697		37	%
Total revenue	$	41,577	$	15,824		163	%	$	70,679	$	30,972		128	%

     Total revenue for the three and six months ended July 2, 2006 and July 3, 2005 was $41.6 million and $70.7 million, and $15.8 million and $31.0 million, respectively. This represents an increase of $25.8 million, or 163%, and $39.7 million, or 128%, as compared to the three and six months ended July 3, 2005.

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     Product revenue increased to $36.4 million and $59.7 million, respectively, for the three and six month periods ended July 2, 2006, from $12.6 million and $24.8 million, respectively, for the three and six months ended July 3, 2005. The increase in both the three and six months ended July 2, 2006 resulted primarily from higher consumable and BeadStation sales. In addition, in the three months ended July 2, 2006, we had higher BeadLab sales. Growth in consumable sales was primarily attributable to the shipment of our whole genome genotyping products, the HumanHap300 Bead Chip in the first quarter of 2006 and the HumanHap550 Bead Chip in the second quarter of 2006. In addition, growth in consumable revenue can be attributed to the growth in our installed base of BeadStations. Consumable products constituted 57% and 60% of product revenue in the three and six months ended July 2, 2006, as compared to 51% and 46% in the three and six months ended July 3, 2005. As of July 2, 2006, we have shipped a total of 165 BeadStations and 13 BeadLabs. We expect to see continued growth in product revenue, which can be partially attributed to the launch of several new products, as well as the growth of our installed base of BeadStations and BeadLabs.

     Service and other revenue increased to $4.8 million and $10.0 million, respectively, for the three and six months ended July 2, 2006, from $2.8 million and $5.5 million for the three and six months ended July 3, 2005, due primarily to higher demand for both our Infinium and GoldenGate SNP genotyping service contracts. We expect sales from SNP genotyping services contracts to fluctuate on a quarterly basis, depending on the mix and number of contracts that are completed. The timing of completion of a SNP genotyping services contract is highly dependent on the customer’s schedule for selecting the SNPs and delivering their samples to us.

     Government grants and other research funding remained flat at $0.4 million in the three months ended July 2, 2006, compared to the three months ended July 3, 2005. For the six months ended July 2, 2006, government grants and research funding increased to $1.0 million from $0.7 million for the six months ended July 3, 2005, due primarily to an increase in internal research spending for our grants from the National Institutes of Health. We expect government grants to remain a small percentage of total revenue in the future as our focus shifts to commercial operations.

Cost of Product and Service and Other Revenue

	Three Months Ended							Six Months Ended
	July 2,		July 3,		Percentage			July 2,		July 3,		Percentage
	2006		2005		Change			2006		2005		Change
	(in thousands)
Cost of product revenue	$	11,912	$	4,033		195	%	$	19,588	$	7,970		146	%
Cost of service and other revenue		1,664		701		137	%		3,281		1,363		141	%
Total cost of product and service and other revenue	$	13,576	$	4,734		187	%	$	22,869	$	9,333		145	%

     Cost of product and service and other revenue represents manufacturing costs incurred in the production process, including component materials, assembly labor and overhead, installation, warranty, packaging and delivery costs, as well as costs associated with performing genotyping services on behalf of our customers. Costs related to research revenue are included in research and development expense. Cost of product revenue increased to $11.9 million and $19.6 million for the three and six months ended July 2, 2006, from $4.0 million and $8.0 million for the three and six months ended July 3, 2005, primarily driven by higher consumable and instrument sales. Gross margin on product revenue decreased to 67% for both the three and six months ended July 2, 2006, from 68% for both the three and six months ended July 3, 2005, due primarily to a shift in consumable product mix as well as lower margins associated with oligo products sold as a part of the Invitrogen collaboration. The change in oligo gross margin is due to the fact that, under the Invitrogen collaboration, we no longer sell oligos directly. As a result, the gross margin related to this product line decreased; however, the net margin has increased due to the fact that most of the sales and marketing expenses surrounding the oligo business have shifted to Invitrogen. In addition, gross margin on product revenue was unfavorably impacted by a $0.3 and $0.5 million increase in stock-based compensation expense recognized as cost of product revenue resulting from the adoption of SFAS No. 123R for the three and six month periods ended July 2, 2006, respectively.

     Cost of service and other revenue increased to $1.7 million and $3.3 million for the three and six months ended July 2, 2006, from $0.7 million and $1.4 million for the three and six months ended July 3, 2005, primarily due to higher service revenue. Gross margin on service and other revenue decreased to 65% and 67% for the three and six months ended July 2, 2006, as compared to 75% for both the three and six months ended July 3, 2005, primarily due to a change in the mix of projects. In addition, gross margin on service and other revenue was unfavorably impacted by a $50,000 and $0.1 million increase in stock-based compensation expense recognized as cost of service and other revenue resulting from the adoption of SFAS No. 123R for the three and six month periods ended July 2, 2006, respectively.

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     We expect product mix to continue to affect our future gross margins. However, we expect our market to become increasingly price competitive and our margins may fluctuate.

Research and Development Expenses

	Three Months Ended							Six Months Ended
	July 2,		July 3,		Percentage			July 2,		July 3,		Percentage
	2006		2005		Change			2006		2005		Change
	(in thousands)							(in thousands)
Research and development	$	8,587	$	7,318		17	%	$	16,803	$	13,211		27	%

     Our research and development expenses consist primarily of salaries and other personnel-related expenses, laboratory supplies and other expenses related to the design, development, testing and enhancement of our products. We expense our research and development costs as they are incurred.

     Research and development expenses increased to $8.6 million and $16.8 million for the three and months ended July 2, 2006, from $7.3 million and $13.2 million for the three and six months ended July 3, 2005. Research and development expenses for the three and six months ended July 2, 2006 included stock-based compensation expenses resulting from the adoption of SFAS No. 123R totaling $0.9 million and $1.8 million, respectively. Exclusive of these stock-based compensation charges, the increase in research and development expenses for both the three and six month periods ending July 2, 2006 is primarily due to the development of our recently-acquired VeraCode technology purchased in conjunction with our acquisition of CyVera in April 2005. The VeraCode technology is being developed to produce our BeadXpress system which is scheduled for commercial product launch by the end of fiscal 2006. Research and development expenses related to the VeraCode technology increased $0.7 million and $2.2 million for the three and six months ended July 2, 2006 as compared to the three and six months ended July 3, 2005. In addition, costs to support our Oligator technology platform and BeadArray research activities decreased $0.3 million and $0.4 million, respectively, for the three and six months ended July 2, 2006 as compared to the three and six months ended July 3, 2005.

     We believe a substantial investment in research and development is essential to remaining competitive and expanding into additional markets. Accordingly, we expect our research and development expenses to increase in absolute dollars as we expand our product base.

Selling, General and Administrative Expenses

	Three Months Ended							Six Months Ended
	July 2,		July 3,		Percentage			July 2,		July 3,		Percentage
	2006		2005		Change			2006		2005		Change
	(in thousands)							(in thousands)
Selling, general and administrative	$	12,891	$	6,518		98	%	$	25,025	$	12,553		99	%

     Our selling, general and administrative expenses consist primarily of personnel costs for sales and marketing, finance, human resources, business development and general management, as well as professional fees, such as expenses for legal and accounting services. Selling, general and administrative expenses increased to $12.9 million and $25.0 million for the three and six months ended July 2, 2006, from $6.5 million and $12.6 million for the three and six months ended July 3, 2005. Selling, general and administrative expenses for the three and six months ended July 2, 2006 included stock-based compensation expenses resulting from the adoption of SFAS No. 123R totaling $2.1 million and $4.0 million. Exclusive of these stock-based compensation charges, our sales and marketing expenses increased $1.7 million during the three months ended July 2, 2006, as compared to the three months ended July 3, 2005, of which $1.5 million is attributable to personnel-related expenses for the build-out of our sales force and customer support staff and $0.2 million is attributable to other non-personnel-related costs, mainly sales and marketing activities for our existing and new products. General and administrative expenses, exclusive of stock-based compensation expense, increased $2.5 million in the three months ended July 2, 2006, as compared to the three and six months ended July 3, 2005, of which $1.4 million is attributable to outside legal costs related to the Affymetrix patent infringement litigation, $0.6 million is attributable to higher personnel-related costs associated with the growth of our business and $0.5 million is attributable to higher outside consulting costs.

     Exclusive of stock-based compensation charges, sales and marketing expenses increased $3.0 million during the six months ended July 2, 2006 as compared to the six months ended July 3, 2005. The increase is primarily due to increases of $2.6 million attributable to personnel-related expenses and $0.4 million attributable to other non-personnel-related costs, mainly sales and marketing activities for our existing and new products. Exclusive of stock-based compensation charges, general and administrative expenses increased $5.5 million during the six months ended July 2, 2006 as compared to the six months ended July 3, 2005, due to an increase of $3.2

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million in outside legal costs related to the Affymetrix patent infringement litigation, an increase of $1.4 million in personnel-related expenses and an increase of $0.9 million in outside consulting costs.

     We expect our selling, general and administrative expenses to accelerate in absolute dollars as we expand our staff, add sales and marketing infrastructure, and incur increased litigation costs and additional costs to support the commercialization and support of an increasing number of products.

Interest and Other Income, Net

	Three Months Ended							Six Months Ended
	July 2,		July 3,		Percentage			July 2,		July 3,		Percentage
	2006		2005		Change			2006		2005		Change
	(in thousands)							(in thousands)
Interest and other income, net	$	856	$	58		1,376	%	$	1,424	$	253		463	%

     Interest income on our cash and cash equivalents and investments was $0.9 million and $1.4 million, respectively, for the three and six months ended July 2, 2006 as compared to $0.3 million and $0.7 million for the three and six months ended July 3, 2005. The increase is primarily due to higher cash balances from operating cash flow and proceeds from our May 2006 stock offering and higher effective interest rates on our cash equivalents and short-term investments.

     During the three months ended July 2, 2006, we recorded an immaterial amount of foreign currency transaction losses as compared to approximately $0.3 million of foreign currency transaction losses during the three months ended July 2, 2005. During the six months ended July 2, 2006, we recorded approximately $0.1 million in gains due to foreign currency transactions, as compared to approximately $0.3 million in losses during the six months ended July 3, 2005. We experienced more favorable foreign currency transaction gains in 2006 due primarily to the strengthening of the Euro and the British Pound over the U.S. Dollar.

Provision for Income Taxes

	Three Months Ended							Six Months Ended
	July 2,		July 3,		Percentage			July 2,		July 3,		Percentage
	2006		2005		Change			2006		2005		Change
	(in thousands)							(in thousands)
Provision for income taxes	$	611	$	51		1,098	%	$	742	$	102		627	%

     Our provision for income taxes consists of estimated foreign income tax expense, totaling approximately $0.1 million and $0.2 million for the three and six months ended July 2, 2006 as compared to $51,000 and $0.1 million for the three and six months ended July 3, 2005. In addition, we have estimated U.S. federal and state income taxes of $0.5 million for both the three and six months ended July 2, 2006. Although profitable for the three and six months ended July 2, 2006, we have utilized our net operating loss carryforwards and as such, our federal and state income taxes are minimal. As of January 1, 2006, we had net operating loss carryforwards for federal and California tax purposes of approximately $103.7 million and $40.1 million, respectively. In the first quarter of 2006, we completed a formal Section 382 and 383 analysis, which resulted in approximately $0.2 million of our total net operating loss carryforwards being limited.

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Liquidity and Capital Resources

Cashflow (in thousands)

	Six Months Ended
	July 2, 2006			July 3, 2005
Net cash provided by (used in) operating activities	$	17,263		$	(7,194	)
Net cash provided by (used in) investing activities		(16,729	)		3,628
Net cash provided by financing activities		101,030			2,908
Effect of foreign currency translation on cash and cash equivalents		(136	)		435
Increase (decrease) in cash and cash equivalents	$	101,428		$	(223	)

     As of July 2, 2006, we had cash, cash equivalents and short-term investments of $156.8 million. We currently invest our funds in U.S. dollar-based, short-term money market mutual funds, corporate bonds and treasury notes.

     Our operating activities generated cash of $17.3 million in the six months ended July 2, 2006, as compared to using cash of $7.2 million in the six months ended July 3, 2005. Net cash provided by operating activities in the six months ended July 2, 2006 was primarily the result of a $12.6 million increase in accounts payable and accrued liabilities, net income of $6.7 million, $6.5 million related to non-cash stock compensation expense resulting from the adoption of SFAS No. 123R, a $3.2 million increase in long-term liabilities primarily related to payments received from Genizon BioSciences Inc. recorded as deferred revenue and non-cash charges of $2.6 million for depreciation and amortization. These sources were partially offset by a $8.0 million increase in inventory, a $5.0 million increase in accounts receivable and a $1.2 million increase in prepaids and other current assets. The accounts receivable and inventory increases are primarily due to our significant sales growth of 128% in the six months ended July 2, 2006, as compared to the six months ended July 3, 2005, which resulted from increased customer demand and our introduction of new products and services into the market. The increase in prepaid expenses and other current assets can be primarily associated with prepaid software licenses and prepaid rent. The increase in accounts payable and accrued liability balances was primarily driven by increases in general business activity associated with such sales growth, as well as expenses associated with the expansion of our corporate infrastructure to accommodate this growth. Net cash used in operating activities in the six months ended July 3, 2005 was primarily the result of a net loss of $19.8 million, a $5.9 million payment for a litigation judgment, a $1.3 million increase in inventory and a $0.7 million increase in accounts receivable. These usages were reduced, in part, by a $0.5 million increase in accounts payable and accrued liabilities, a $2.4 million increase in long-term liabilities primarily related to payments received from Invitrogen Corporation recorded as deferred revenue, non-cash charges of $1.7 million for depreciation and amortization and a non-cash IPR&D charge of $15.8 million related to the CyVera acquisition.

     Our investing activities used cash of $16.7 million in the six months ended July 2, 2006, as compared to cash provided by investing activities of $3.6 million in the six months ended July 3, 2005. Cash used in investing activities in the six months ended July 2, 2006 was due in part to the payment of $9.1 million for the purchase of property and equipment primarily related to the expansion of our manufacturing capacity. Our manufacturing capacity for BeadChips has increased approximately tenfold over the level at the end of July 3, 2005. In addition, we used cash of $4.5 million to purchase available-for-sale securities, as well as $3.0 million to purchase a secured convertible debenture in Genizon BioSciences Inc. Cash provided by investing activities in the six months ended July 3, 2005 was due to $12.2 million from the sale or maturity of available-for-sale securities used to provide operating funds for our business, reduced by $6.2 million for the purchase of property and equipment and $2.4 million paid for the acquisition of CyVera.

     Our financing activities provided $101.0 million in the six months ended July 2, 2006, as compared to $2.9 million in the six months ended July 3, 2005. Cash provided by financing activities in the six months ended July 2, 2006 was primarily due to proceeds from a public stock offering completed in May 2006, as well as proceeds from the issuance of common stock from option exercises totaling $4.6 million. On May 24, 2006, we raised approximately $96.5 million, net of offering expenses, through the sale of our common stock under a shelf registration statement. Cash provided during the six months ended July 3, 2005 was due primarily to proceeds from the issuance of common stock from option exercises.

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     We anticipate that our current cash and cash equivalents and income from operations will be sufficient to fund our anticipated operating needs for the foreseeable future. Operating needs include the planned costs to operate our business, including amounts required to fund working capital and capital expenditures. At the present time, we have no material commitments for capital expenditures. However, our future capital requirements and the adequacy of our available funds will depend on many factors, including our ability to successfully commercialize our SNP genotyping and gene expression systems and extensions to those products and to expand our oligos and SNP genotyping services product lines, scientific progress in our research and development programs, the magnitude of those programs, competing technological and market developments, the successful resolution of our legal proceedings with Affymetrix, the success of our collaboration with Invitrogen and the need to enter into collaborations with other companies or acquire other companies or technologies to enhance or complement our product and service offerings. Therefore, we may require additional funding in the future.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

Interest Rate Sensitivity

     Our exposure to market risk for changes in interest rates relates primarily to our investment portfolio. The fair market value of fixed rate securities may be adversely impacted by fluctuations in interest rates while income earned on floating rate securities may decline as a result of decreases in interest rates. Under our current policies, we do not use interest rate derivative instruments to manage exposure to interest rate changes. We attempt to ensure the safety and preservation of our invested principal funds by limiting default risk, market risk and reinvestment risk. We mitigate default risk by investing in investment grade securities. We have historically maintained a relatively short average maturity for our investment portfolio, and we believe a hypothetical 100 basis point adverse move in interest rates along the entire interest rate yield curve would not materially affect the fair value of our interest sensitive financial instruments.

Foreign Currency Exchange Risk

     Although most of our revenue is denominated in U.S. dollars, some portions of our revenue are realized in foreign currencies. As a result, our financial results could be affected by factors such as changes in foreign currency exchange rates or weak economic conditions in foreign markets. The functional currencies of our subsidiaries are their respective local currencies. Accordingly, the accounts of these operations are translated from the local currency to the U.S. dollar using the current exchange rate in effect at the balance sheet date for the balance sheet accounts, and using the average exchange rate during the period for revenue and expense accounts. The effects of translation are recorded in accumulated other comprehensive income as a separate component of stockholders’ equity.

     Exchange gains and losses arising from transactions denominated in foreign currencies are recorded in operations. Periodically, we hedge significant foreign currency firm sales commitments and accounts receivable with forward contracts. We only use derivative financial instruments to reduce foreign currency exchange rate risks; we do not hold any derivative financial instruments for trading or speculative purposes. Our forward exchange contracts have been designated as cash flow hedges and to the extent effective, any unrealized gains or losses on these foreign currency forward contracts are reported in other comprehensive income. Realized gains and losses for the effective portion are recognized with the underlying hedge transaction. There were no forward foreign currency forward contracts outstanding at July 2, 2006. The notional settlement amount of the foreign currency forward contracts outstanding at January 1, 2006 was $0.1 million. As of January 1, 2006, we had one foreign currency forward contract outstanding. This contract had a fair value of $882, representing an unrealized gain, and was included in other current assets at January 1, 2006. For the six months ended July 2, 2006 and July 3, 2005, there were no amounts recognized in earnings due to hedge ineffectiveness and we settled foreign exchange contracts of $0.1 million and $0.3 million, respectively.

Item 4. Controls and Procedures.

     We design our internal controls to provide reasonable assurance that (1) our transactions are properly authorized; (2) our assets are safeguarded against unauthorized or improper use; and (3) our transactions are properly recorded and reported in conformity with U.S. generally accepted accounting principles. We also maintain internal controls and procedures to ensure that we comply with applicable laws and our established financial policies.

     We have carried out an evaluation, under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, or the Securities

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Exchange Act), as of July 2, 2006. Based upon that evaluation, our principal executive officer and principal financial officer concluded that, as of July 2, 2006, our disclosure controls and procedures are effective in providing reasonable assurance that (a) the information required to be disclosed by us in the reports that we file or submit under the Securities Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and (b) such information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure. In designing and evaluating our disclosure controls and procedures, our management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and our management have concluded that the disclosure controls and procedures are effective at the reasonable assurance level.

     An evaluation was also performed under the supervision and with the participation of our management, including our chief executive officer and chief financial officer, of any change in our internal control over financial reporting that occurred during the second quarter of 2006 and that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting. That evaluation did not identify any such change.

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PART II – OTHER INFORMATION

Item 1. Legal Proceedings.

     We have incurred substantial costs in defending ourselves against patent infringement claims and expect to devote substantial financial and managerial resources to protect our intellectual property and to defend against the claims described below as well as any future claims asserted against us.

Affymetrix Litigation

     On July 26, 2004, Affymetrix, Inc. (Affymetrix) filed a complaint in the U.S. District Court for the District of Delaware alleging that the use, manufacture and sale of our BeadArray products and services, including our Array Matrix and BeadChip products, infringe six Affymetrix patents. Affymetrix seeks an injunction against the sale of products, if any, that are determined to be infringing these patents, unspecified monetary damages, interest and attorneys’ fees. On September 15, 2004, we filed our answer to Affymetrix’ complaint, seeking declaratory judgments from the court that we do not infringe the Affymetrix patents and that such patents are invalid, and we filed counterclaims against Affymetrix for unfair competition and interference with actual and prospective economic advantage.

     On February 15, 2006, the court allowed us to file our first amended answer and counterclaims, adding allegations of inequitable conduct with respect to all six asserted Affymetrix patents, violation of Section 2 of the Sherman Act, and unclean hands. In March 2006, Affymetrix notified us of its decision to drop one of the six patents from the suit and of its intention to assert infringement of certain additional claims of the remaining five patents. We have filed a motion to preclude Affymetrix from asserting infringement of those additional claims. On April 20, 2006, the court held a claims construction hearing. Rulings on our motion and on claims construction issues could be issued at any time. On June 30, 2006, the court dismissed the patent Affymetrix had sought to withdraw from the suit. Both parties filed summary judgment motions by the July 14, 2006 deadline established by the court. Trial is scheduled for October 16, 2006. We believe we have meritorious defenses against each of the infringement claims alleged by Affymetrix and intend to defend vigorously against this suit. However, we cannot be sure that we will prevail in this matter. Any unfavorable determination, and in particular, any significant cash amounts required to be paid by us or prohibition of the sale of our products and services, could result in a material adverse effect on our business, financial condition and results of operations.

Dr. Anthony W. Czarnik v. Illumina, Inc.

     On June 15, 2005, Dr. Anthony Czarnik, a former employee, filed suit against us in the U.S. District Court for the District of Delaware seeking correction of inventorship of certain of our patents and patent applications and alleging that we committed inequitable conduct and fraud in not naming him as an inventor. Dr. Czarnik seeks an order requiring us and the U.S. Patent and Trademark Office to correct the inventorship of certain of our patents and patent applications by adding Dr. Czarnik as an inventor, a judgment declaring certain of our patents and patent applications unenforceable, unspecified monetary damages and attorney’s fees. On August 4, 2005, we filed a motion to dismiss the complaint for lack of standing and failure to state a claim. While this motion was pending, Dr. Czarnik filed an amended complaint on September 23, 2005. On October 7, 2005, we filed a motion to dismiss the amended complaint for lack of standing and failure to state a claim. On July 13, 2006, the court granted our motion to dismiss the counts of Dr. Czarnik’s complaint dealing with correction of inventorship in pending applications and inequitable conduct. We have responded to the two remaining counts of the complaint (correction of inventorship in issued patents, and fraud). There has been no trial date set for this case. We believe we have meritorious defenses against this claim.

ITEM 1A. Risk Factors.

     There have been no material changes to the risk factors previously disclosed in Item 1A of our Annual Report on Form 10-K for the fiscal year ended January 1, 2006. Our business is subject to various risks, including those described below. In addition to the other information included in this Form 10-Q, the following issues could adversely affect our operating results or our stock price.

Litigation or other proceedings or third party claims of intellectual property infringement could require us to spend significant time and money and could prevent us from selling our products or services or impact our stock price.

     Our commercial success depends in part on our non-infringement of the patents or proprietary rights of third parties and on our ability to protect our own intellectual property. As described above under “Item 1. Legal Proceedings,” Affymetrix, Inc. filed a complaint against us in July 2004, alleging infringement of six of its patents.

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     On April 20, 2006, a claims construction hearing was held as part of this proceeding. We expect a ruling related to the claims construction at any time. At issue is the meaning of 15 claim terms. Depending on the court’s ruling on each of the 15 terms or on a mix of rulings across all the terms, an advantage (or at least the perception of an advantage) may be obtained by one party or the other as to one or more issues. We are not able to predict the timing or the substance of the court’s rulings. Any adverse ruling or perception of an adverse ruling may have an adverse impact on our stock price, and such impact may be disproportionate to the actual import of the ruling itself.

     Third parties, including Affymetrix, have asserted or may assert that we are employing their proprietary technology without authorization. As we enter new markets, we expect that competitors will likely assert that our products infringe their intellectual property rights as part of a business strategy to impede our successful entry into those markets. In addition, third parties may have obtained and may in the future obtain patents allowing them to claim that the use of our technologies infringes these patents. We could incur substantial costs and divert the attention of our management and technical personnel in defending ourselves against any of these claims. Furthermore, parties making claims against us may be able to obtain injunctive or other relief, which effectively could block our ability to further develop, commercialize and sell products, and could result in the award of substantial damages against us. In the event of a successful claim of infringement against us, we may be required to pay damages and obtain one or more licenses from third parties, or be prohibited from selling certain products. We may not be able to obtain these licenses at a reasonable cost, if at all. We could therefore incur substantial costs related to royalty payments for licenses obtained from third parties, which could negatively affect our gross margins. In that event, we could encounter delays in product introductions while we attempt to develop alternative methods or products. Defense of any lawsuit or failure to obtain any of these licenses on favorable terms could prevent us from commercializing products, and the prohibition of sale of any of our products could materially affect our ability to grow and maintain profitability.

We expect intense competition in our target markets, which could render our products obsolete, result in significant price reductions or substantially limit the volume of products that we sell. This would limit our ability to compete and achieve and maintain profitability. If we cannot continuously develop and commercialize new products, our revenue may not grow as intended.

     We compete with life sciences companies that design, manufacture and market instruments for analysis of genetic variation and biological function and other applications using technologies such as two-dimensional electrophoresis, capillary electrophoresis, mass spectrometry, flow cytometry, microfluidics, next-generation DNA sequencing and mechanically deposited, inkjet and photolithographic arrays. We anticipate that we will face increased competition in the future as existing companies develop new or improved products and as new companies enter the market with new technologies. The markets for our products are characterized by rapidly changing technology, evolving industry standards, changes in customer needs, emerging competition, new product introductions and strong price competition. For example, prices per data point for genotyping have fallen significantly over the last two years and we anticipate that prices will continue to fall. One or more of our competitors may render our technology obsolete or uneconomical. Some of our competitors have greater financial and personnel resources, broader product lines, a more established customer base and more experience in research and development than we do. Furthermore, the life sciences and pharmaceutical companies, which are our potential customers and strategic partners, could develop competing products. If we are unable to develop enhancements to our technology and rapidly deploy new product offerings, our business, financial condition and results of operations will suffer.

Our manufacturing capacity may limit our ability to sell our products.

     We are currently ramping up our capacity to meet our anticipated demand for our products. Although we have significantly increased our manufacturing capacity and we believe that we have sufficient plans in place to ensure we have adequate capacity to meet our business plan in 2006, there are uncertainties inherent in expanding our manufacturing capabilities and we may not be able to increase our capacity in a timely manner. For example, manufacturing and product quality issues may arise as we increase production rates at our manufacturing facility and launch new products. As a result, we may experience difficulties in meeting customer, collaborator and internal demand, in which case we could lose customers or be required to delay new product introductions, and demand for our products could decline. Additionally, in the past, we have experienced variations in manufacturing conditions that have temporarily reduced production yields. Due to the intricate nature of manufacturing products that contain DNA, we may encounter similar or previously unknown manufacturing difficulties in the future that could significantly reduce production yields, impact our ability to launch or sell these products, or to produce them economically, prevent us from achieving expected performance levels or cause us to set prices that hinder wide adoption by customers.

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We have not yet achieved annual operating profitability and may not be able to do so.

     We have incurred net losses each year since our inception. As of July 2, 2006, our accumulated deficit was $137.9 million. Although we were profitable for the three and six months ended July 2, 2006, we may not be profitable for the year ended December 31, 2006, due in part to the impact of SFAS No. 123R, which is expected to add additional expense of $13.0 million to $15.0 million in 2006. Our ability to achieve and sustain annual profitability will depend, in part, on the rate of growth, if any, of our revenue and on the level of our expenses. We expect to continue incurring significant expenses related to research and development, sales and marketing efforts to commercialize our products and the continued development of our manufacturing capabilities. In addition, we expect that our selling and marketing expenses will increase at a higher rate in the future as a result of the launch of new products. As a result, we expect that our operating expenses will increase significantly as we grow and, consequently, we will need to generate significant additional revenue to achieve and sustain profitability. Even if we maintain profitability, we may not be able to increase profitability on a quarterly basis.

Any inability to adequately protect our proprietary technologies could harm our competitive position.

     Our success will depend in part on our ability to obtain patents and maintain adequate protection of our intellectual property in the United States and other countries. If we do not protect our intellectual property adequately, competitors may be able to use our technologies and thereby erode our competitive advantage. The laws of some foreign countries do not protect proprietary rights to the same extent as the laws of the United States, and many companies have encountered significant problems in protecting their proprietary rights abroad. These problems can be caused by the absence of rules and methods for defending intellectual property rights.

     The patent positions of companies developing tools for the life sciences and pharmaceutical industries, including our patent position, generally are uncertain and involve complex legal and factual questions. We will be able to protect our proprietary rights from unauthorized use by third parties only to the extent that our proprietary technologies are covered by valid and enforceable patents or are effectively maintained as trade secrets. We intend to apply for patents covering our technologies and products, as we deem appropriate. However, our patent applications may be challenged and may not result in issued patents or may be invalidated or narrowed in scope after they are issued. Questions as to inventorship may also arise. For example, a former employee recently filed a complaint against us, claiming he is entitled to be named as joint inventor of certain of our U.S. patents and pending U.S. and foreign patent applications, and seeking a judgment that the related patents and applications are unenforceable. Any finding that our patents and applications are unenforceable could harm our ability to prevent others from practicing the related technology, and a finding that others have inventorship rights to our patents and applications could require us to obtain certain rights to practice related technologies, which may not be available on favorable terms, if at all.

     In addition, our existing patents and any future patents we obtain may not be sufficiently broad to prevent others from practicing our technologies or from developing competing products. There also is risk that others may independently develop similar or alternative technologies or design around our patented technologies. Also, our patents may fail to provide us with any competitive advantage. We may need to initiate additional lawsuits to protect or enforce our patents, or litigate against third party claims, which would be expensive and, if we lose, may cause us to lose some of our intellectual property rights and reduce our ability to compete in the marketplace. Furthermore, these lawsuits may divert the attention of our management and technical personnel.

     We also rely upon trade secret protection for our confidential and proprietary information. We have taken security measures to protect our confidential information. These measures, however, may not provide adequate protection for our trade secrets or other confidential information. Among other things, we seek to protect our trade secrets and confidential information by entering into confidentiality agreements with employees, collaborators and consultants. Nevertheless, employees, collaborators or consultants may still disclose our confidential information, and we may not otherwise be able to effectively protect our trade secrets. Accordingly, others may gain access to our confidential information, or may independently develop substantially equivalent information or techniques.

If we are unable to find third-party manufacturers to manufacture components of our products, we may not be able to launch or support our products in a timely manner, or at all.

     The nature of our products requires customized components that currently are available from a limited number of sources. For example, we currently obtain the fiber optic bundles and BeadChip slides included in our products from single vendors. If we are unable to secure a sufficient supply of those or other product components, we will be unable to meet demand for our products. We

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may need to enter into contractual relationships with manufacturers for commercial-scale production of some of our products, or develop these capabilities internally, and we cannot assure you that we will be able to do this on a timely basis, for sufficient quantities or on commercially reasonable terms. Accordingly, we may not be able to establish or maintain reliable, high-volume manufacturing at commercially reasonable costs.

We have a limited history of commercial sales of systems and consumable products, and our success depends on our ability to develop commercially successful products and on market acceptance of our new and relatively unproven technologies.

     We may not possess all of the resources, capability and intellectual property necessary to develop and commercialize all the products or services that may result from our technologies. Sales of our genotyping and gene expression systems only began in 2003, and some of our other technologies are in the early stages of commercialization or are still in development. You should evaluate us in light of the uncertainties and complexities affecting similarly situated companies developing tools for the life sciences and pharmaceutical industries. We must conduct a substantial amount of additional research and development before some of our products will be ready for sale, and we currently have fewer resources available for research and development activities than many of our competitors. We may not be able to develop or launch new products in a timely manner, or at all, or they may not meet customer requirements or be of sufficient quality or at a price that enables us to compete effectively in the marketplace. Problems frequently encountered in connection with the development or early commercialization of products and services using new and relatively unproven technologies might limit our ability to develop and successfully commercialize these products and services. In addition, we may need to enter into agreements to obtain intellectual property necessary to commercialize some of our products or services, which may not be available on favorable terms, or at all.

     Historically, life sciences and pharmaceutical companies have analyzed genetic variation and biological function using a variety of technologies. In order to be successful, our products must meet the commercial requirements of the life sciences and pharmaceutical industries as tools for the large-scale analysis of genetic variation and biological function.

     Market acceptance will depend on many factors, including:

• our ability to demonstrate to potential customers the benefits and cost effectiveness of our products and services relative to others available in the market;

• the extent and effectiveness of our efforts to market, sell and distribute our products;

• our ability to manufacture products in sufficient quantities with acceptable quality and reliability and at an acceptable cost;

• the willingness and ability of customers to adopt new technologies requiring capital investments; and

• the extended time lag and sales expenses involved between the time a potential customer is contacted on a possible sale of our products and services and the time the sale is consummated or rejected by the customer.

Our sales, marketing and technical support organization may limit our ability to sell our products.

     We currently have fewer resources available for sales and marketing and technical support services as compared to some of our primary competitors. In order to effectively commercialize our genotyping and gene expression systems and other products to follow, we will need to expand our sales, marketing and technical support staff both domestically and internationally. We may not be successful in establishing or maintaining either a direct sales force or distribution arrangements to market our products and services. In addition, we compete primarily with much larger companies that have larger sales and distribution staffs and a significant installed base of products in place, and the efforts from a limited sales and marketing force may not be sufficient to build the market acceptance of our products required to support continued growth of our business.

If we are unable to develop and maintain operation of our manufacturing capability, we may not be able to launch or support our products in a timely manner, or at all.

     We currently possess only one facility capable of manufacturing our products and services for both sale to our customers and internal use. If a natural disaster were to significantly damage our facility or if other events were to cause our operations to fail, these events could prevent us from developing and manufacturing our products and services. Also, many of our manufacturing processes are

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automated and are controlled by our custom-designed Laboratory Information Management System (LIMS). Additionally, as part of the decoding step in our array manufacturing process, we record several images of each array to identify what bead is in each location on the array and to validate each bead in the array. This requires significant network and storage infrastructure. If either our LIMS system or our networks or storage infrastructure were to fail for an extended period of time, it would adversely impact our ability to manufacture our products on a timely basis and may prevent us from achieving our expected shipments in any given period.

The growth and profitability of our oligo business depends on a third party.

     In December 2004, we entered into a collaboration agreement with Invitrogen to sell and market our oligos worldwide. Under the terms of the collaboration, Invitrogen is responsible for sales, marketing and technical support, while we are responsible for the manufacture of the collaboration products. As Invitrogen is solely responsible for the sales and marketing support of the collaboration, our continued growth and profitability related to these products depends on the extent to which Invitrogen is successful in penetrating the oligo market and selling the collaboration products. If Invitrogen is not successful in selling the collaboration products, our business, financial condition and results of operations may suffer.

We may encounter difficulties in integrating recently completed or future acquisitions that could adversely affect our business.

     In April 2005, we acquired CyVera Corporation and may in the future acquire technology, products or businesses related to our current or future business. We have limited experience in acquisition activities and may have to devote substantial time and resources in order to complete acquisitions. Further, these potential acquisitions entail risks, uncertainties and potential disruptions to our business. For example, we may not be able to successfully integrate a company’s operations, technologies, products and services, information systems and personnel into our business. An acquisition may further strain our existing financial and managerial resources, and divert management’s attention away from our other business concerns. In connection with the CyVera acquisition, we assumed certain liabilities and hired certain employees of CyVera, which is expected to continue to result in an increase in our research and development expenses and capital expenditures. There may also be unanticipated costs and liabilities associated with an acquisition that could adversely affect our operating results. To finance any acquisitions, we may choose to issue shares of our common stock as consideration, which would result in dilution to our stockholders. Additionally, an acquisition may have a substantial negative impact on near-term expected financial results.

We may encounter difficulties in managing our growth. These difficulties could increase our losses.

     We expect to experience rapid and substantial growth in order to achieve our operating plans, which will place a strain on our human and capital resources. If we are unable to manage this growth effectively, our losses could increase. Our ability to manage our operations and growth effectively requires us to continue to expend funds to enhance our operational, financial and management controls, reporting systems and procedures and to attract and retain sufficient numbers of talented employees. If we are unable to scale up and implement improvements to our manufacturing process and control systems in an efficient or timely manner, or if we encounter deficiencies in existing systems and controls, then we will not be able to make available the products required to successfully commercialize our technology. Failure to attract and retain sufficient numbers of talented employees will further strain our human resources and could impede our growth.

We may need additional capital in the future. If additional capital is not available on acceptable terms, we may have to curtail or cease operations.

     Our future capital requirements will be substantial and will depend on many factors including our ability to successfully market our genetic analysis systems and services, the need for capital expenditures to support and expand our business, the progress and scope of our research and development projects, the development and enforcement of our patent portfolio, the outcome of our legal proceedings with Affymetrix, the defense of any future litigation involving us and the need to enter into collaborations with other companies or acquire other companies or technologies to enhance or complement our product and service offerings. We anticipate that our current cash and cash equivalents, revenue from sales and funding from grants will be sufficient to fund our anticipated operating needs, barring unforeseen developments. However, this expectation is based upon our current operating plan, which may change as a result of many factors. Consequently, we may need additional funding in the future. Our inability to raise capital would seriously harm our business and product development efforts. In addition, we may choose to raise additional capital due to market conditions or strategic considerations, such as an acquisition, even if we believe we have sufficient funds for our current or future operating plans. To the extent that additional capital is raised through the sale of equity, the issuance of these securities could result in dilution to our stockholders.

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     We have no credit facility or committed sources of capital available as of July 2, 2006. To the extent operating and capital resources are insufficient to meet future requirements, we will have to raise additional funds to continue the development and commercialization of our technologies. These funds may not be available on favorable terms, or at all. If adequate funds are not available on attractive terms, we may be required to curtail operations significantly or to obtain funds by entering into financing, supply or collaboration agreements on unattractive terms.

If we lose our key personnel or are unable to attract and retain additional personnel, we may be unable to achieve our goals.

     We are highly dependent on our management and scientific personnel, including Jay Flatley, our president and chief executive officer, and John Stuelpnagel, our senior vice president and chief operating officer. The loss of their services could adversely impact our ability to achieve our business objectives. We will need to hire additional qualified personnel with expertise in molecular biology, chemistry, biological information processing, sales, marketing and technical support. We compete for qualified management and scientific personnel with other life science companies, universities and research institutions, particularly those focusing on genomics. Competition for these individuals, particularly in the San Diego area, is intense, and the turnover rate can be high. Failure to attract and retain management and scientific personnel would prevent us from pursuing collaborations or developing our products or technologies.

     Our planned activities will require additional expertise in specific industries and areas applicable to the products developed through our technologies, including the life sciences and healthcare industries. Thus, we will need to add new personnel, including management, and develop the expertise of existing management. The failure to do so could impair the growth of our business.

A significant portion of our sales are to international customers.

     Approximately 43% and 40% of our revenue for the three months ended July 2, 2006 and July 3, 2005, respectively, was derived from customers outside the United States. Approximately 44% and 41% of our revenue for the six months ended July 2, 2006 and July 3, 2005, respectively, was derived from customers outside the United States. We intend to continue to expand our international presence and export sales to international customers and we expect the total amount of non-U.S. sales to continue to grow. Export sales entail a variety of risks, including:

• currency exchange fluctuations;

• unexpected changes in legislative or regulatory requirements of foreign countries into which we import our products;

• difficulties in obtaining export licenses or in overcoming other trade barriers and restrictions resulting in delivery delays; and

• significant taxes or other burdens of complying with a variety of foreign laws.

     In addition, sales to international customers typically result in longer payment cycles and greater difficulty in accounts receivable collection. We are also subject to general geopolitical risks, such as political, social and economic instability and changes in diplomatic and trade relations. One or more of these factors could have a material adverse effect on our business, financial condition and operating results.

Our success depends upon the continued emergence and growth of markets for analysis of genetic variation and biological function.

     We design our products primarily for applications in the life sciences and pharmaceutical industries. The usefulness of our technology depends in part upon the availability of genetic data and its usefulness in identifying or treating disease. We are initially focusing on markets for analysis of genetic variation and biological function, namely SNP genotyping and gene expression profiling. Both of these markets are new and emerging, and they may not develop as quickly as we anticipate, or reach their full potential. Other methods of analysis of genetic variation and biological function may emerge and displace the methods we are developing. Also, researchers may not seek or be able to convert raw genetic data into medically valuable information through the analysis of genetic variation and biological function. In addition, factors affecting research and development spending generally, such as changes in the regulatory environment affecting life sciences and pharmaceutical companies, and changes in government programs that provide

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funding to companies and research institutions, could harm our business. If useful genetic data is not available or if our target markets do not develop in a timely manner, demand for our products may grow at a slower rate than we expect, and we may not be able to achieve or sustain annual profitability.

We expect that our results of operations will fluctuate. This fluctuation could cause our stock price to decline.

     Our revenue is subject to fluctuations due to the timing of sales of high-value products and services projects, the impact of seasonal spending patterns, the timing and size of research projects our customers perform, changes in overall spending levels in the life sciences industry, the timing and amount of government grant funding programs and other unpredictable factors that may affect customer ordering patterns. Given the difficulty in predicting the timing and magnitude of sales for our products and services, we may experience quarter-to-quarter fluctuations in revenue resulting in the potential for a sequential decline in quarterly revenue. A large portion of our expenses are relatively fixed, including expenses for facilities, equipment and personnel. In addition, we expect operating expenses to continue to increase significantly. Accordingly, if revenue does not grow as anticipated, we may not be able to achieve and maintain annual profitability. Any significant delays in the commercial launch of our products, unfavorable sales trends in our existing product lines, or impacts from the other factors mentioned above, could adversely affect our revenue growth in 2006 or cause a sequential decline in quarterly revenues. Due to the possibility of fluctuations in our revenue and expenses, we believe that quarterly comparisons of our operating results are not a good indication of our future performance. If our operating results fluctuate or do not meet the expectations of stock market analysts and investors, our stock price probably would decline.

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

     None.

Item 3. Defaults Upon Senior Securities.

     None.

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

     The registrant’s 2006 Annual Meeting of Stockholders was held on June 8, 2006. Directors Karin Eastham, Jay T. Flatley and William H. Rastetter, Ph.D. will continue to serve as directors with terms expiring at the 2009 Annual Meeting of Stockholders. The Registrant’s stockholders ratified the appointment of Ernst & Young LLP as the Company’s independent auditors for the year 2006.

     The following numbers of votes were cast “for” and to “withhold authority to vote for” the election of Karin Eastham, elected director at the meeting:

     For:                     36,582,315                     Withhold Authority:                     2,345,768

     The following numbers of votes were cast “for” and to “withhold authority to vote for” the election of Jay T. Flatley, elected director at the meeting:

     For:                     37,631,400                     Withhold Authority:                     1,296,683

     The following numbers of votes were cast “for” and to “withhold authority to vote for” the election of William H. Rastetter, Ph.D., elected director at the meeting:

     For:                      36,951,828                     Withhold Authority:                     1,976,255

     The vote on ratification of the appointment of Ernst & Young LLP as the Company’s independent auditors for the year 2006:

     For:                38,801,994                Against:                117,237                Abstain:                 8,852                 Non Votes:                 0

Item 5. Other Information.

     None.

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Item 6. Exhibits.

Exhibit Number	Description of Document
3.2	Bylaws.
10.32	Joint Development and Licensing Agreement dated May 15, 2006 between deCODE genetics, ehf. and Registrant (confidential treatment has been requested with respect to certain portions of this exhibit).
31.1	Certification of Jay T. Flatley pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Christian O. Henry pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Jay T. Flatley pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Christian O. Henry pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

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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.

	Illumina, Inc.
	(Registrant)
Date: August 2, 2006	/s/ CHRISTIAN O. HENRY
	Christian O. Henry
	Vice President and Chief Financial Officer

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