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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549





FORM 10-Q





(Mark One)

|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------

For the quarterly period ended September 30, 2010



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

For the transition period from  to

Commission File Number:
000-29101





SEQUENOM, INC.

(Exact name of registrant as specified in its charter)







|                                                               |  |                                        
|-------------------------------------------------------------- |  | ---------------------------------------
|DELAWARE                                                       |  | 77-0365889                             
|(State or other jurisdiction of
incorporation or organization) |  | (I.R.S. Employer Identification Number)
|                                                               | 
|3595 John Hopkins Court San Diego, California                  |  | 92121                                  
|(Address of principal executive offices)                       |  | (Zip Code)                             

Registrants telephone number, including area code: (858) 202-9000





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.    x  Yes     ̈  No

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller
reporting company. See definitions of large accelerated filer, accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act.



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

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

The number of shares of the Registrants Common Stock outstanding as of November 1, 2010 was 76,331,540.









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SEQUENOM, INC.

INDEX



|                               |  |                                                                                                                              |  |          |    | 
|------------------------------ |  | ---------------------------------------------------------------------------------------------------------------------------- |  | -------- | -- | 
|                               |  |                                                                                                                              |  | Page No. |   
|PART I - FINANCIAL INFORMATION |  |                                                                                                                              |  |         
|                               |  |                                                                                                                             
|Item 1.                        |  | Financial Statements                                                                                                         |  |          | 3  | 
|                               |  |                                                                                                                             
|                               |  | Condensed Consolidated Balance Sheets  as of September 30, 2010 (unaudited) and December 31,
2009                           |  |          | 3  | 
|                               |  |                                                                                                                             
|                               |  | Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2010 and
 2009 (unaudited) |  |          | 4  | 
|                               |  |                                                                                                                             
|                               |  | Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2010 and 2009 (unaudited)            |  |          | 5  | 
|                               |  |                                                                                                                             
|                               |  | Notes to Unaudited Condensed Consolidated Financial Statements                                                               |  |          | 6  | 
|                               |  |                                                                                                                             
|Item 2.                        |  | Managements Discussion and Analysis of Financial Condition and Results of
Operations                                        |  |          | 19 | 
|                               |  |                                                                                                                             
|Item 3.                        |  | Quantitative and Qualitative Disclosures About Market Risk                                                                   |  |          | 30 | 
|                               |  |                                                                                                                             
|Item 4.                        |  | Controls and Procedures                                                                                                      |  |          | 33 | 
|                               | 
|PART II  OTHER INFORMATION    |  |                                                                                                                              |  |         
|                               |  |                                                                                                                             
|Item 1.                        |  | Legal Proceedings                                                                                                            |  |          | 34 | 
|                               |  |                                                                                                                             
|Item 1A.                       |  | Risk Factors                                                                                                                 |  |          | 36 | 
|                               |  |                                                                                                                             
|Item 6.                        |  | Exhibits                                                                                                                     |  |          | 57 | 



2



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PART I - FINANCIAL INFORMATION



|Item 1. | Financial Statements
|------- | --------------------

SEQUENOM, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except par value and share information)



|                                                                                                                                                                                 |  |                   |          |   |                  |   |          |  
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------- | -------- | - | ---------------- | - | -------- | -
|                                                                                                                                                                                 |  | September 30,2010 |          |   | December 31,2009 |  
|                                                                                                                                                                                 |  | (Unaudited)       |          |   |                  |  
|Assets                                                                                                                                                                           |  |                   |          |   |                  |   |          |  
|Current assets:                                                                                                                                                                  |  |                   |          |   |                  |   |          |  
|Cash and cash equivalents                                                                                                                                                        |  | $                 | 35,983   |   |                  | $ | 26,919   |  
|Marketable securities                                                                                                                                                            |  |                   | 19,841   |   |                  |   | 15,762   |  
|Restricted cash                                                                                                                                                                  |  |                   | 1,389    |   |                  |   | 1,372    |  
|Accounts receivable, net                                                                                                                                                         |  |                   | 5,744    |   |                  |   | 8,510    |  
|Inventories, net                                                                                                                                                                 |  |                   | 6,026    |   |                  |   | 7,722    |  
|Other current assets and prepaid expenses                                                                                                                                        |  |                   | 5,242    |   |                  |   | 2,598    |  
|                                                                                                                                                                                 |  |                   |          |   |                  |   |          |  
|Total current assets                                                                                                                                                             |  |                   | 74,225   |   |                  |   | 62,883   |  
|Equipment and leasehold improvements, net                                                                                                                                        |  |                   | 11,096   |   |                  |   | 11,811   |  
|Intangible assets, net                                                                                                                                                           |  |                   | 873      |   |                  |   | 1,172    |  
|Goodwill                                                                                                                                                                         |  |                   | 10,007   |   |                  |   | 10,007   |  
|Other assets                                                                                                                                                                     |  |                   | 775      |   |                  |   | 772      |  
|                                                                                                                                                                                 |  |                   |          |   |                  |   |          |  
|Total assets                                                                                                                                                                     |  | $                 | 96,976   |   |                  | $ | 86,645   |  
|                                                                                                                                                                                 |  |                   |          |   |                  |   |          |  
|Liabilities and stockholders equity                                                                                                                                             |  |                   |          |   |                  |   |          |  
|Current liabilities:                                                                                                                                                             |  |                   |          |   |                  |   |          |  
|Accounts payable                                                                                                                                                                 |  | $                 | 7,033    |   |                  | $ | 6,064    |  
|Accrued expenses                                                                                                                                                                 |  |                   | 8,950    |   |                  |   | 7,658    |  
|Accrued litigation settlement, net                                                                                                                                               |  |                   | 44,919   |   |                  |   |         |  
|Deferred revenue                                                                                                                                                                 |  |                   | 2,576    |   |                  |   | 1,871    |  
|Current portion of debt and obligations                                                                                                                                          |  |                   | 1,018    |   |                  |   | 1,320    |  
|Other current liabilities                                                                                                                                                        |  |                   | 175      |   |                  |   | 544      |  
|                                                                                                                                                                                 |  |                   |          |   |                  |   |          |  
|Total current liabilities                                                                                                                                                        |  |                   | 64,671   |   |                  |   | 17,457   |  
|Deferred revenue, less current portion                                                                                                                                           |  |                   | 360      |   |                  |   | 304      |  
|Other long-term liabilities                                                                                                                                                      |  |                   | 2,860    |   |                  |   | 3,389    |  
|Long-term portion of debt and obligations                                                                                                                                        |  |                   | 1,125    |   |                  |   | 1,837    |  
|Commitments and contingencies                                                                                                                                                    |  |                   |          |   |                  |   |          |  
|Stockholders equity:                                                                                                                                                            |  |                   |          |   |                  |   |          |  
|Convertible preferred stock, par value $0.001; 5,000,000 shares authorized, no shares issued or outstanding at September 30,
2010 and December 31, 2009                          |  |                   |         |   |                  |   |         |  
|Common stock, par value $0.001; 185,000,000 shares authorized, 76,324,792 and 61,988,473 shares issued and outstanding at
September 30, 2010 and December 31, 2009, respectively |  |                   | 76       |   |                  |   | 62       |  
|Additional paid-in capital                                                                                                                                                       |  |                   | 723,123  |   |                  |   | 659,798  |  
|Accumulated other comprehensive income                                                                                                                                           |  |                   | 870      |   |                  |   | 1,084    |  
|Accumulated deficit                                                                                                                                                              |  |                   | (696,109 | ) |                  |   | (597,286 | )
|                                                                                                                                                                                 |  |                   |          |   |                  |   |          |  
|Total stockholders equity                                                                                                                                                       |  |                   | 27,960   |   |                  |   | 63,658   |  
|                                                                                                                                                                                 |  |                   |          |   |                  |   |          |  
|Total liabilities and stockholders equity                                                                                                                                       |  | $                 | 96,976   |   |                  | $ | 86,645   |  
|                                                                                                                                                                                 |  |                   |          |   |                  |   |          |  

See accompanying notes.



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SEQUENOM, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share
information)



|                                                       |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|------------------------------------------------------ |  | ------------------------------- | ------- | - | ------------------------------ | - | ------- | ---- |  | - | ------- | - |  | - | ------- | -
|                                                       |  | Three months endedSeptember 30, |         |   | Nine months endedSeptember 30, |  
|                                                       |  | 2010                            |         |   | 2009                           |   |         | 2010 |  |   | 2009    |  
|                                                       |  | (Unaudited)                     |         |   | (Unaudited)                    |  
|Revenues:                                              |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Consumables                                            |  | $                               | 5,716   |   |                                | $ | 5,443   |      |  | $ | 16,219  |   |  | $ | 15,363  |  
|MassARRAY and other product related                    |  |                                 | 4,316   |   |                                |   | 3,671   |      |  |   | 14,352  |   |  |   | 10,092  |  
|Contract research services                             |  |                                 | 965     |   |                                |   | 103     |      |  |   | 1,800   |   |  |   | 1,617   |  
|Diagnostic                                             |  |                                 | 687     |   |                                |   |        |      |  |   | 1,335   |   |  |   |        |  
|Research and other                                     |  |                                 |        |   |                                |   | 3       |      |  |   |        |   |  |   | 5       |  
|                                                       |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Total revenues                                         |  |                                 | 11,684  |   |                                |   | 9,220   |      |  |   | 33,706  |   |  |   | 27,077  |  
|                                                       |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Costs and expenses:                                    |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Cost of consumables and products revenue               |  |                                 | 2,750   |   |                                |   | 2,499   |      |  |   | 10,513  |   |  |   | 7,330   |  
|Cost of contract research service revenue              |  |                                 | 230     |   |                                |   | 179     |      |  |   | 451     |   |  |   | 1,897   |  
|Cost of diagnostic revenue                             |  |                                 | 1,123   |   |                                |   |        |      |  |   | 2,858   |   |  |   |        |  
|Research and development                               |  |                                 | 11,305  |   |                                |   | 8,479   |      |  |   | 32,925  |   |  |   | 27,486  |  
|Selling and marketing                                  |  |                                 | 6,904   |   |                                |   | 5,914   |      |  |   | 20,409  |   |  |   | 20,167  |  
|General and administrative                             |  |                                 | 5,288   |   |                                |   | 6,724   |      |  |   | 16,586  |   |  |   | 21,862  |  
|Litigation settlement, net                             |  |                                 | 7,049   |   |                                |   |        |      |  |   | 48,848  |   |  |   |        |  
|Restructuring                                          |  |                                 |        |   |                                |   | 480     |      |  |   |        |   |  |   | 1,482   |  
|                                                       |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Total costs and expenses                               |  |                                 | 34,649  |   |                                |   | 24,275  |      |  |   | 132,590 |   |  |   | 80,224  |  
|                                                       |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Loss from operations                                   |  |                                 | (22,965 | ) |                                |   | (15,055 | )    |  |   | (98,884 | ) |  |   | (53,147 | )
|Interest income, net                                   |  |                                 | 58      |   |                                |   | 78      |      |  |   | 103     |   |  |   | 370     |  
|Gain (loss) on marketable securities                   |  |                                 |        |   |                                |   |        |      |  |   | 111     |   |  |   | (38     | )
|Other income (expense), net                            |  |                                 | 166     |   |                                |   | 204     |      |  |   | (47     | ) |  |   | 382     |  
|                                                       |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Loss before income taxes                               |  |                                 | (22,741 | ) |                                |   | (14,773 | )    |  |   | (98,717 | ) |  |   | (52,433 | )
|Income tax benefit (expense)                           |  |                                 | 5       |   |                                |   | (102    | )    |  |   | (105    | ) |  |   | (176    | )
|                                                       |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Net loss                                               |  | $                               | (22,736 | ) |                                | $ | (14,875 | )    |  | $ | (98,822 | ) |  | $ | (52,609 | )
|                                                       |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Net loss per share, basic and diluted                  |  | $                               | (0.30   | ) |                                | $ | (0.24   | )    |  | $ | (1.44   | ) |  | $ | (0.86   | )
|                                                       |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Weighted average shares outstanding, basic and diluted |  |                                 | 75,260  |   |                                |   | 61,211  |      |  |   | 68,637  |   |  |   | 61,123  |  
|                                                       |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  

See accompanying notes.



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SEQUENOM, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)



|                                                                            |  |                                |         |   |      |   |         |  
|--------------------------------------------------------------------------- |  | ------------------------------ | ------- | - | ---- | - | ------- | -
|                                                                            |  | Nine months endedSeptember 30, |        
|                                                                            |  | 2010                           |         |   | 2009 |  
|                                                                            |  | (Unaudited)                    |        
|Operating activities                                                        |  |                                |         |   |      |   |         |  
|Net loss                                                                    |  | $                              | (98,822 | ) |      | $ | (52,609 | )
|Adjustments to reconcile net loss to net cash used in operating activities: |  |                                |         |   |      |   |         |  
|Litigation settlement, net                                                  |  |                                | 48,510  |   |      |   |        |  
|Share-based compensation                                                    |  |                                | 7,690   |   |      |   | 9,206   |  
|Restricted stock                                                            |  |                                | 987     |   |      |   | 331     |  
|Depreciation and amortization                                               |  |                                | 4,097   |   |      |   | 3,786   |  
|Bad debt expense                                                            |  |                                | 664     |   |      |   | (148    | )
|Loss on marketable securities                                               |  |                                |        |   |      |   | 38      |  
|Deferred rent                                                               |  |                                | (500    | ) |      |   | (402    | )
|Other non-cash items                                                        |  |                                | 180     |   |      |   | 92      |  
|Changes in operating assets and liabilities:                                |  |                                |         |   |      |   |         |  
|Accounts receivable, net                                                    |  |                                | 1,990   |   |      |   | 3,203   |  
|Inventories, net                                                            |  |                                | 1,649   |   |      |   | 828     |  
|Prepaid expenses and other assets                                           |  |                                | (372    | ) |      |   | (1,872  | )
|Accounts payable and accrued expenses                                       |  |                                | 2,289   |   |      |   | (1,729  | )
|Deferred revenue                                                            |  |                                | 768     |   |      |   | 400     |  
|Other liabilities                                                           |  |                                | (399    | ) |      |   | (176    | )
|                                                                            |  |                                |         |   |      |   |         |  
|Net cash used in operating activities                                       |  |                                | (31,269 | ) |      |   | (39,052 | )
|Investing activities                                                        |  |                                |         |   |      |   |         |  
|Purchases of equipment and leasehold improvements                           |  |                                | (3,263  | ) |      |   | (6,895  | )
|Cash paid for acquisition  SensiGen, LLC                                   |  |                                |        |   |      |   | (2,017  | )
|Purchases of marketable securities                                          |  |                                | (23,850 | ) |      |   | (30,006 | )
|Sales of marketable securities                                              |  |                                | 497     |   |      |   |        |  
|Maturity of marketable securities                                           |  |                                | 19,240  |   |      |   | 30,000  |  
|Net change in restricted cash                                               |  |                                | (17     | ) |      |   | (46     | )
|                                                                            |  |                                |         |   |      |   |         |  
|Net cash used in investing activities                                       |  |                                | (7,393  | ) |      |   | (8,964  | )
|Financing activities                                                        |  |                                |         |   |      |   |         |  
|Proceeds from private placement, net of issuance costs                      |  |                                | 47,770  |   |      |   |        |  
|Proceeds from exercise of stock options and ESPP purchases                  |  |                                | 1,046   |   |      |   | 1,230   |  
|Payments on debt                                                            |  |                                | (929    | ) |      |   | (1,242  | )
|Payments on capital lease obligation                                        |  |                                | (85     | ) |      |   | (53     | )
|                                                                            |  |                                |         |   |      |   |         |  
|Net cash provided by (used in) financing activities                         |  |                                | 47,802  |   |      |   | (65     | )
|                                                                            |  |                                |         |   |      |   |         |  
|Net increase (decrease) in cash and cash equivalents                        |  |                                | 9,140   |   |      |   | (48,081 | )
|Effect of exchange rate changes on cash and cash equivalents                |  |                                | (76     | ) |      |   | (170    | )
|Cash and cash equivalents at beginning of period                            |  |                                | 26,919  |   |      |   | 68,338  |  
|                                                                            |  |                                |         |   |      |   |         |  
|Cash and cash equivalents at end of period                                  |  | $                              | 35,983  |   |      | $ | 20,087  |  
|                                                                            |  |                                |         |   |      |   |         |  
|Supplemental non-cash items:                                                |  |                                |         |   |      |   |         |  
|Investing activity:                                                         |  |                                |         |   |      |   |         |  
|Accrued Isis license fee                                                    |  | $                              |        |   |      | $ | 1,000   |  
|Financing activities:                                                       |  |                                |         |   |      |   |         |  
|Equipment purchased under capital lease obligation                          |  | $                              |        |   |      | $ | 366     |  
|                                                                            |  |                                |         |   |      |   |         |  
|Receivable from stock option exercise                                       |  | $                              | 2,255   |   |      | $ |        |  
|                                                                            |  |                                |         |   |      |   |         |  
|Issuance of common stock related to litigation settlement                   |  | $                              | 3,591   |   |      | $ |        |  
|                                                                            |  |                                |         |   |      |   |         |  

See accompanying notes.



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SEQUENOM,
INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(1) Basis of Presentation

The accompanying unaudited condensed consolidated financial
statements of Sequenom, Inc. have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and
disclosures required by GAAP for complete financial statements. In the opinion of management, all adjustments, consisting of normal recurring adjustments considered necessary for a fair presentation of the financial information have been
included. Interim results are not necessarily indicative of results for a full year or any other period(s). Certain reclassifications have been made to the prior period amounts in order to conform to the current presentation.

The condensed consolidated balance sheet at December 31, 2009 has been derived from the audited financial statements at that date, but does not
include all of the information and disclosures required by GAAP for complete financial statements. Subsequent events were evaluated by management through the date of filing of this Form 10-Q.

These financial statements should be read in conjunction with the audited financial statements and disclosures included in our Annual Report on Form 10-K for the year ended December 31, 2009, as
filed with the Securities and Exchange Commission (SEC) on March 16, 2010.

Use of Estimates

The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of
assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses in the reporting period. We regularly evaluate estimates and assumptions related to inventory valuation and warranty liabilities, which
affects cost of sales and gross margin; the allowance for doubtful accounts, which affects revenue recognition; our discounted cash flow analysis valuation model, which affects the valuation of our marketable securities; our annual long-lived asset
impairment analysis, which impacts the carrying value of our goodwill; accrued litigation settlement, which affects the amount and range of loss on any pending settlement of litigation and the valuation of deferred income taxes, which affects income
tax expense and benefit. We base our estimates and assumptions on historical experience and on various other factors that we believe to be reasonable under the circumstances, the results of which form the basis for making informed judgments about
the carrying values of assets and liabilities that are not readily apparent from other sources. Management considers many factors in selecting appropriate financial accounting policies and controls, and in developing the estimates and assumptions
that are used in the preparation of these financial statements. Management must apply significant judgment in this process. In addition, other factors may affect estimates, including: expected business and operational change, sensitivity and
volatility associated with the assumptions used in developing estimates and whether historical trends are expected to be representative of future trends. The estimation process often may yield a range of potentially reasonable estimates of the
ultimate future outcomes and management must select an amount that falls within that range of reasonable estimates. The actual results experienced by us may differ materially and adversely from managements estimates. To the extent there are
material differences between the estimates and the actual results, future results of operations will be affected.

Recent Accounting
Pronouncements

In June 2009, the Financial Accounting Standards Board (FASB) issued authoritative guidance that requires companies to
perform a qualitative analysis to determine whether a variable interest in another entity represents a controlling financial interest in a variable interest entity. A controlling financial interest in a variable interest entity is characterized by
having both the power to direct the most significant activities of the entity and the obligation to absorb losses or the right to receive benefits of the entity. This guidance also requires ongoing reassessments of variable interests based on
changes in facts and circumstances. This guidance became effective for fiscal years beginning after November 15, 2009. We adopted the provisions of the guidance in the first quarter of 2010 and determined that none of the entities with which we
currently conduct business and collaborations are variable interest entities.

New Accounting Standards Not Yet Adopted

In April 2010, the FASB issued an accounting standards update that provides guidance on the milestone method of revenue recognition
for research and development arrangements. This guidance allows an entity to make an accounting policy election to recognize a payment that is contingent upon the achievement of a substantive milestone in its entirety in the period in which the
milestone is achieved. This guidance will be effective for fiscal years beginning on or after June 15, 2010, which will be our fiscal year 2011, and may be applied prospectively to milestones achieved after the adoption date or retrospectively
for all periods presented, with earlier application permitted. We have not yet evaluated the potential impact of adopting this guidance on our condensed consolidated financial statements.



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In October 2009, the FASB issued an
accounting standards update that requires an entity to allocate arrangement consideration at the inception of an arrangement to all of its deliverables based on their relative selling prices, eliminates the use of the residual method of allocation,
and requires the relative-selling-price method in all circumstances in which an entity recognizes revenue of an arrangement with multiple deliverables. This guidance will be effective for revenue arrangements entered into or materially modified in
fiscal years beginning on or after June 15, 2010, which will be our fiscal year 2011, with earlier application permitted. We are currently evaluating the potential impact of adopting this guidance on our condensed consolidated financial
statements.

(2) Liquidity and Capital Resources

We have a history of recurring losses from operations and have an accumulated deficit of $696.1 million as of September 30, 2010. Our capital requirements to sustain operations, including research
and development projects, have been and will continue to be significant. As of September 30, 2010, we had available cash, cash equivalents and current marketable securities totaling $55.8 million and working capital of $9.6 million.

(3) Business Segment Information

We operate two primary business segments, molecular diagnostics and genetic analysis. Our molecular diagnostics business segment researches, develops and pursues the commercialization of various
noninvasive molecular diagnostic tests for prenatal genetic disorders and diseases, womens health related disorders and diseases, age-related macular degeneration, oncology, infectious diseases, and other medical conditions, disorders and
diseases. Our genetic analysis business segment develops, markets and provides maintenance services for our proprietary, research use only MassARRAY system, comprised of hardware, software applications, consumable chips and reagents, which are
marketed to premier clinical research laboratories, bio-agriculture, bio-technology and pharmaceutical companies.

These reportable segments
are business units that offer different products and services and are each managed separately. Operating results for each segment are reported separately to our chief operating decision maker to make decisions as to the allocation of resources and
to assess performance.

Revenue for molecular diagnostics is generated from customers located within the United States. Revenue for genetic
analysis is generated from customers and/or distributors primarily located in North America, Europe and Asia.

We evaluate performance and
allocate resources based on total segment revenue, operating expenses and operating profit or loss exclusive of general and administrative expenses, other indirect overhead costs and restructuring charges, which are not allocated to our segments for
performance assessment by our chief operating decision maker. No evaluation of segment performance or allocation of resources is done in consideration of segment assets. We do not discretely allocate assets to our operating segments, nor does our
chief operating decision maker evaluate operating segment performance using discrete asset information. The accounting policies of the reportable segments are the same as those described in the summary of significant accounting policies.
Intersegment revenues and transfers are immaterial.



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Unallocated operating loss consists of
general and administrative expenses, which include litigation settlement expense, net of revaluation adjustments, for the three and nine months ended September 30, 2010, share-based compensation, indirect overhead expenses and unabsorbed costs.
The following table sets forth for the three and nine months ended September 30, 2010 and 2009, respectively, our revenues and operating loss from our molecular diagnostics and genetic analysis segments (in thousands):



|                      |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|--------------------- |  | ------------------------------- | ------- | - | ------------------------------ | - | ------- | ---- |  | - | ------- | - |  | - | ------- | -
|                      |  | Three months endedSeptember 30, |         |   | Nine months endedSeptember 30, |  
|                      |  | 2010                            |         |   | 2009                           |   |         | 2010 |  |   | 2009    |  
|                      |  | (Unaudited)                     |         |   | (Unaudited)                    |  
|Revenues:             |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Molecular diagnostics |  | $                               | 687     |   |                                | $ |        |      |  | $ | 1,335   |   |  | $ |        |  
|Genetic analysis      |  |                                 | 10,997  |   |                                |   | 9,220   |      |  |   | 32,371  |   |  |   | 27,077  |  
|                      |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Total revenues        |  | $                               | 11,684  |   |                                | $ | 9,220   |      |  | $ | 33,706  |   |  | $ | 27,077  |  
|                      |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Operating loss:       |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Molecular diagnostics |  | $                               | (9,619  | ) |                                | $ | (6,708  | )    |  | $ | (27,114 | ) |  | $ | (19,509 | )
|Genetic analysis      |  |                                 | 3,803   |   |                                |   | 2,583   |      |  |   | 8,314   |   |  |   | 2,719   |  
|Unallocated           |  |                                 | (17,149 | ) |                                |   | (10,930 | )    |  |   | (80,084 | ) |  |   | (36,357 | )
|                      |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Total operating loss  |  | $                               | (22,965 | ) |                                | $ | (15,055 | )    |  | $ | (98,884 | ) |  | $ | (53,147 | )
|                      |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  

(4) Accrued Litigation Settlement

On May 3, 2010, the U.S. District Court for the Southern District of California entered an order approving the stipulation of settlement reached in the class action securities lawsuits consolidated
under the caption In re Sequenom, Inc. Securities Litigation, Master File No. 3:09-cv-00921 LAB-WMC. Pursuant to the stipulation, we have paid $14 million in cash, which was funded by insurance proceeds, and will issue approximately
6.8 million shares of our common stock to the plaintiffs class.

In connection with the court approved final settlement in May
2010, we recorded an initial litigation settlement charge of approximately $42.8 million related to the common stock issuable to the plaintiffs class. This charge was calculated based on approximately 6.8 million shares at an initial fair
value of $6.28 per share. Subsequently, we recognized an aggregate gain of approximately $2.5 million during the second quarter of 2010 due to the revaluation to fair value for the portion of the approved share settlement issued to plaintiffs
counsel in accordance with the courts order awarding attorneys fees and the revaluation to fair value for the remaining shares issuable to the members of the plaintiffs class as of June 30, 2010. In the accompanying condensed
consolidated balance sheet as of September 30, 2010, we have approximately $44.9 million in accrued litigation settlement, which represents the approximate 6.4 million shares still to be issued to the members of the plaintiffs class
and includes a loss recognized in operations of approximately $7.0 million for the three months ended September 30, 2010, due to the revaluation of these shares at a fair value of $7.01 per share. Depending upon changes in the fair market value
of our stock, we will be required to recognize further adjustments to the accrued litigation settlement until the shares are issued to the members of the plaintiffs class.

On May 6, 2010, we entered into a stipulation of settlement to resolve the various derivative actions filed in federal and state court. Pursuant to the financial terms of the stipulation we agreed to
pay the plaintiffs attorneys a total of $2.5 million in fees, of which $1.0 million was funded by insurance proceeds. In connection with the final approval of settlement on July 26, 2010, we remitted a cash payment of $338,000 and as
permitted by the stipulation of settlement issued 200,000 shares of our common stock at a fair value of $5.81 per share in payment of the portion of the plaintiffs attorneys fees not covered by insurance.



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The following table represents
activity related to our accrued litigation settlement balance during the three months ended September 30, 2010:



|                                                        |  |                              |        |  
|------------------------------------------------------- |  | ---------------------------- | ------ | -
|                                                        |  | Accrued LitigationSettlement |       
|                                                        |  | (in thousands)               |       
|Balance at June 30, 2010                                |  | $                            | 39,370 |  
|Less:                                                   |  |                              |        |  
|Derivatives settlement payment                          |  |                              | (1,500 | )
|Revaluation loss included in operations:                |  |                              |        |  
|Revaluation of equity portion  class action settlement |  |                              | 7,049  |  
|                                                        |  |                              |        |  
|Balance at September 30, 2010                           |  | $                            | 44,919 |  
|                                                        |  |                              |        |  

See Note 15 for additional discussion regarding our litigation.

(5) Restructuring

In April 2009, we announced that we had reduced our genetic analysis
employee workforce in accordance with our initiative to reduce costs and restructure our workforce in our genetic analysis business segment. Severance related charges of $0.6 million were included in the aggregate restructuring charges of $1.6
million recognized in our consolidated statement of operations for the year ended December 31, 2009.

The beginning balance for accrued
facilities related restructuring costs prior to the April 2009 reduction in workforce consisted of a $0.4 million in accrued facility exit costs associated with exiting our lease commitments for our facility located near Boston, Massachusetts. This
facility was initially leased in conjunction with the acquisition of Gemini Genomics, plc in 2001.

The April 2009 reduction in workforce
included the closure of our leased facility near Boston, Massachusetts, with lease expiration on December 31, 2010, as well as the closure of our office located in New Delhi, India during the second quarter of 2009. The following table sets
forth the remaining liabilities associated with our restructuring activities as of September 30, 2010, which are included within other current liabilities in the accompanying condensed consolidated balance sheets (in thousands):



|                              |  |            |      |   |       |   |    |       |  |   |      |  
|----------------------------- |  | ---------- | ---- | - | ----- | - | -- | ----- |  | - | ---- | -
|Description                   |  | Facilities |      |   | Other |   |    | Total | 
|Balance at December 31, 2009  |  | $          | 535  |   |       | $ | 55 |       |  | $ | 590  |  
|Cash payments                 |  |            | (394 | ) |       |   | (3 | )     |  |   | (397 | )
|                              |  |            |      |   |       |   |    |       |  |   |      |  
|Balance at September 30, 2010 |  | $          | 141  |   |       | $ | 52 |       |  | $ | 193  |  
|                              |  |            |      |   |       |   |    |       |  |   |      |  

(6) Acquisition

SensiGen, LLC

On February 27, 2009, we completed a taxable acquisition of
certain assets and assumption of certain liabilities of SensiGen, LLC (SensiGen). The assets are now part of our wholly-owned subsidiary, Sequenom Center for Molecular Medicine, or Sequenom CMM. Under the terms of the asset purchase agreement (the
Agreement), we acquired certain assets related to SensiGens business in gene-based molecular diagnostic tests relating to cervical cancer, head and neck cancer, chronic kidney disease and lupus. We paid SensiGen cash consideration of
approximately $1.9 million, which included a loan advance of $340,000, and issued common stock valued at $1.9 million (utilizing the minimum floor price of $20.94 per share in accordance with the Agreement). An additional $1.3 million is
contingently payable to SensiGen upon the completion of certain triggering events with either cash or shares of our common stock (priced at the average closing price of our common stock over the ten trading day period ending on the third trading day
prior to the applicable triggering event for such payment). In June 2009 we satisfied one of the triggering events related to the Agreement with a cash payment of $130,000. This triggering event had previously been recorded at a fair value of
$130,000 during our initial fair value measurement of contingent consideration associated with the allocation of purchase price. After the payment of this triggering event, our remaining fair value of contingent consideration in the allocation of
purchase price at the date of closing was $27,000. For the year ended December 31, 2009, we increased our contingent consideration liability for two triggering events by $514,000, which was recognized as a component of research and development
($260,000) and general and administrative expenses ($254,000). During the first quarter of 2010, we satisfied our obligations associated with these two triggering events with an aggregate cash payment of $520,000. As of September 30, 2010, we
have $21,000 recorded as our fair value estimate for the remaining contingent consideration associated with the SensiGen acquisition, which is further discussed below.



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In December 2009, we entered into
stipulations with certain stockholders of SensiGen for their release of claims against us related to the acquisition in exchange for the issuance of an aggregate 367,547 shares of our common stock. The issuance of these additional shares was charged
to operations for the year ended December 31, 2009, and was valued at approximately $1.5 million as of the date of share delivery.

The
acquisition of the SensiGen assets provided us with intellectual property related to certain molecular diagnostics for womens health and cancer and contributed to the valuation of the purchase price for the acquisition of SensiGen, which
resulted in the recognition of goodwill of approximately $6.9 million.

The total purchase consideration consisted of (in thousands, except
share and per share data):



|                                                                                     |  |   |       | 
|------------------------------------------------------------------------------------ |  | - | ----- | 
|Cash paid to SensiGen                                                                |  | $ | 1,887 | 
|Sequenom common stock issued on the closing date (92,679 shares at $20.94 per share) |  |   | 1,941 | 
|Assumed liabilities                                                                  |  |   | 3,242 | 
|Write-off of pre-existing receivables                                                |  |   | 403   | 
|                                                                                     |  |   |       | 
|Total purchase price                                                                 |  | $ | 7,473 | 
|                                                                                     |  |   |       | 

In connection with this acquisition we completed a valuation study of the intangible assets acquired in order to allocate
the purchase price. We have allocated the excess purchase price over the fair value of net tangible assets and liabilities assumed to goodwill, as well as provided an estimate of the fair value of the contingent consideration as of the closing date
of the acquisition. We believe the fair values assigned to SensiGens assets acquired and contingent consideration were based on reasonable assumptions, as determined by management. The purchase price has been allocated as follows (in
thousands):



|                                       |  |   |       | 
|-------------------------------------- |  | - | ----- | 
|Net identifiable tangible assets       |  | $ | 613   | 
|Goodwill                               |  |   | 6,860 | 
|                                       |  |   |       | 
|                                       |  |   | 7,473 | 
|Fair value of contingent consideration |  |   | 157   | 
|                                       |  |   |       | 
|Total consideration                    |  | $ | 7,630 | 
|                                       |  |   |       | 

At each reporting date, we remeasure the contingent consideration liability at fair value, until the contingency is resolved
with the changes in fair value recognized as a charge to operations in the current period. This analysis, which includes a probability assessment regarding the likelihood of payment and a discounted present value factor, concluded that based on
currently available information the fair value of the remaining contingent consideration payable upon certain triggering events was $21,000 as of September 30, 2010.

(7) Marketable Securities and Fair Value Measurements

Marketable securities

The appropriate classification of marketable securities is determined at the time of purchase and reevaluated as of each balance sheet
date. As a result, at September 30, 2010 and December 31, 2009, all of our investments in marketable securities were classified as available for sale and were reported at fair value. We measure fair value based on the prices that would be
received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is determined based on observable market quotes or valuation models using assessments of counterparty
credit worthiness, credit default risk or underlying security and overall capital market liquidity. Declines in fair value that are considered other-than-temporary are charged to operations and those that are considered temporary are reported as a
component of accumulated other comprehensive income in stockholders equity. We use the specific identification method of determining the cost basis in computing realized and unrealized gains and losses on the sale of our available-for-sale
securities.

The primary objective of our investment activities is to preserve principal while at the same time maximizing the income we
receive from our investments without significantly increasing risk. Some of the securities that we invest in may have market risk. This means that a change in prevailing interest rates may cause the fair value of the principal amount of the
investment to fluctuate. For example, if we hold a security that was issued with a fixed interest rate at the then-prevailing rate and interest rates later rise, the fair value of the principal amount of our investment will probably decline. To
minimize this risk our current investment policy requires us to maintain our portfolio of cash equivalents and marketable securities in a variety of securities that are represented by issuances from the U.S. Government, repurchase agreements
collateralized by U.S. Government securities that have ratings of AAA or are fully guaranteed by the U.S. Government. Our investment policy also includes a minimum quality rating for all new investments and the overall amount that may be invested
with a single security.



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If an investment we hold falls below
this level, we research the reasons for the fall and determine if we should continue to hold the investment in order to minimize our exposure to market risk of the investment. At September 30, 2010 and December 31, 2009, we had $2.0
million and $4.3 million, respectively, of principal invested in auction rate securities (ARS) with an estimated fair value of $0 and $0.5 million, respectively. Consistent with our investment policy guidelines in effect when originally purchased,
these ARS investments had AAA/AA credit ratings at the time of purchase. Our remaining ARS as of September 30, 2010, is a private placement security with a long-term nominal maturity in 2028 and with an interest rate that resets through a Dutch
auction each month and represents an interest in collateralized debt obligations supported by insurance securitizations. With the liquidity issues experienced in global credit and capital markets our remaining ARS has experienced multiple failed
auctions as the amount of securities submitted for sale has exceeded the amount of purchase orders and we have been unable to liquidate this security. As a result, this ARS has an estimated fair value of $0 as of September 30, 2010.

During the first quarter of 2010, we sold two ARS investments with an aggregate principal value of $2.3 million, but an estimated fair value of $0.5
million. These sales resulted in a gain on the sale of approximately $0.1 million. For the three months ended September 30, 2010, no other-than-temporary impairment losses were charged to operations and there are no accumulated unrealized
losses in other comprehensive income related to our investments in ARS.

Fair Value Measurements

A fair value hierarchy has been established that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs
when measuring fair value. The three levels of inputs that may be used to measure fair value are described as:

Level 1 - Quoted prices
in active markets for identical assets or liabilities. We have determined that our investments in money market accounts, certificates of deposit and U.S. Government securities and the equity portion of our accrued litigation settlement with respect
to In re Sequenom, Inc. Securities Litigationmeet the criteria for definition within the Level 1 hierarchy.

Level 2 - Inputs
other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. These inputs include quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or
other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. We have no investments that meet the criteria for definition within the Level 2 hierarchy as of
September 30, 2010. As of December 31, 2009, our investments in ARS that were sold in the first quarter of 2010 and had moderate secondary market activity met the criteria for definition within the Level 2 hierarchy.

Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or
liabilities. We have determined that our investments in ARS with an estimated fair value of $0 at September 30, 2010, meet the criteria for definition within Level 3 hierarchy.

The fair value of our investments in ARS instruments was estimated utilizing a discounted cash flow analysis valuation model as of September 30, 2010. This analysis considers, among other items,
the collateralization underlying the security investments, the credit quality of the counterparty, the timing of expected future cash flows, the default risk underlying the security, discount rates, the expected time until a successful auction and
the overall capital market liquidity. These securities were also compared, when possible, to other observable market data with similar characteristics to the securities. Management has reviewed the valuation input criteria utilized by our
investment manager, which generally consists of the price of credit protection, information available on the trading of senior and subordinated securities and other debt in the market place for comparable types of maturities, the current credit
rating of the trust sponsor and/or bond insurer, as well as the ultimate maturity and the underlying collateral of the securities and have deemed them to be reasonable assumptions in determining fair value. The valuation of our ARS investments is
subject to uncertainties that are difficult to predict. Factors that may impact our valuation include changes to credit ratings of the securities, as well as to the underlying assets supporting those securities, rates of credit default of the
underlying assets, underlying collateral value, discount rates, counterparty risk and the ongoing strength and quality of market credit and liquidity.



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We endeavor to utilize the best
available information in measuring fair value. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The following table sets forth our financial
assets and liabilities, net of cash, that were accounted for at fair value on a recurring basis as of September 30, 2010 (in thousands):



|                                        |  |       |        |  |         |   |        |         |  |   |         |  |  |   |   | 
|--------------------------------------- |  | ----- | ------ |  | ------- | - | ------ | ------- |  | - | ------- |  |  | - | - | 
|Description                             |  | Total |        |  | Level 1 |   |        | Level 2 |  |   | Level 3 | 
|Assets:                                 |  |       |        |  |         |   |        |         |  |   |         |  |  |   |   | 
|Cash equivalents                        |  | $     | 28,237 |  |         | $ | 28,237 |         |  | $ |        |  |  | $ |  | 
|Marketable securities, current1         |  |       | 19,841 |  |         |   | 19,841 |         |  |   |        |  |  |   |  | 
|Restricted cash (current and long-term) |  |       | 1,465  |  |         |   | 1,465  |         |  |   |        |  |  |   |  | 
|                                        |  |       |        |  |         |   |        |         |  |   |         |  |  |   |   | 
|Total assets                            |  | $     | 49,543 |  |         | $ | 49,543 |         |  | $ |        |  |  | $ |  | 
|                                        |  |       |        |  |         |   |        |         |  |   |         |  |  |   |   | 
|Liabilities:                            |  |       |        |  |         |   |        |         |  |   |         |  |  |   |   | 
|Accrued litigation settlement, net      |  | $     | 44,919 |  |         | $ | 44,919 |         |  | $ |        |  |  | $ |  | 
|                                        |  |       |        |  |         |   |        |         |  |   |         |  |  |   |   | 
|Total liabilities                       |  | $     | 44,919 |  |         | $ | 44,919 |         |  | $ |        |  |  | $ |  | 
|                                        |  |       |        |  |         |   |        |         |  |   |         |  |  |   |   | 



|1 | Gains or losses considered to be temporary are recorded to other comprehensive income (loss) at each measurement date. Other than temporary losses are
recorded to operations at each measurement date.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The following table sets forth our financial assets and liabilities, net
of cash, that were accounted for at fair value on a recurring basis as of December 31, 2009 (in thousands):



|                                        |  |       |        |  |         |   |        |         |  |   |         |  |  |   |   | 
|--------------------------------------- |  | ----- | ------ |  | ------- | - | ------ | ------- |  | - | ------- |  |  | - | - | 
|Description                             |  | Total |        |  | Level 1 |   |        | Level 2 |  |   | Level 3 | 
|Cash equivalents                        |  | $     | 14,941 |  |         | $ | 14,941 |         |  | $ |        |  |  | $ |  | 
|Marketable securities, current1         |  |       | 15,762 |  |         |   | 15,291 |         |  |   | 471     |  |  |   |  | 
|Restricted cash (current and long-term) |  |       | 1,419  |  |         |   | 1,419  |         |  |   |        |  |  |   |  | 
|                                        |  |       |        |  |         |   |        |         |  |   |         |  |  |   |   | 
|Total                                   |  | $     | 32,122 |  |         | $ | 31,651 |         |  | $ | 471     |  |  | $ |  | 
|                                        |  |       |        |  |         |   |        |         |  |   |         |  |  |   |   | 



|1 | Gains or losses considered to be temporary are recorded to other comprehensive income (loss) at each measurement date. Other than temporary losses are
recorded to operations at each measurement date.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

There were no transfers within Level 2 or 3 fair value assets or
liabilities nor were there realized or unrealized gains or losses within Level 2 fair value assets or liabilities for the three and nine months ended September 30, 2010. A realized gain of $95,500 on a Level 3 asset with an estimated fair value
of $0 was recognized in the nine months ended September 30, 2010. There were no realized losses or unrealized gains or losses on Level 3 fair value assets or liabilities for the three months ended September 30, 2010.

(8) Comprehensive Loss

We disclose
comprehensive loss and its components, which includes net loss, unrealized gains and losses on investments and foreign currency translation gains and losses as a separate component of stockholders equity. A summary of our comprehensive loss is
as follows (in thousands):



|                                                |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|----------------------------------------------- |  | ------------------------------- | ------- | - | ------------------------------ | - | ------- | ---- |  | - | ------- | - |  | - | ------- | -
|                                                |  | Three months endedSeptember 30, |         |   | Nine months endedSeptember 30, |  
|                                                |  | 2010                            |         |   | 2009                           |   |         | 2010 |  |   | 2009    |  
|Comprehensive loss:                             |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Net loss                                        |  | $                               | (22,736 | ) |                                | $ | (14,875 | )    |  | $ | (98,822 | ) |  | $ | (52,609 | )
|Unrealized gain (loss) on marketable securities |  |                                 | 16      |   |                                |   | 43      |      |  |   | (34     | ) |  |   | (1      | )
|Foreign currency translation adjustments        |  |                                 | 439     |   |                                |   | 212     |      |  |   | (180    | ) |  |   | (140    | )
|                                                |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Comprehensive loss                              |  | $                               | (22,281 | ) |                                | $ | (14,620 | )    |  | $ | (99,036 | ) |  | $ | (52,750 | )
|                                                |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  

(9) Net Loss Per Share

Basic net loss per share is computed by dividing the net loss for the period by the weighted average number of common shares outstanding during the period. Diluted net loss per share is computed by
dividing the net loss for the period by the weighted average number of common and common equivalent shares outstanding during the period. Common stock



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equivalents consisting of exercisable stock options to purchase 3,430,499 shares, warrants to purchase 59,035 shares and restricted stock covering 1,136,490 shares were not included in the
computation of diluted net loss per share as their effect was anti-dilutive for all periods presented.

(10) Stockholders Equity

In July 2010, we issued 200,000 shares of our common stock at a fair value of $5.81 per share, which represented the portion of the
plaintiffs attorneys fees not covered by insurance to resolve the various derivative actions filed in federal and state court. The shares were issued in accordance with the courts stipulation of settlement. See Note 4 for
additional discussion of our accrued litigation settlement.

In June 2010, we issued 409,005 shares of our common stock at a fair value of
$5.94 per share, which represented a portion of the court approved share settlement in the class action securities lawsuits consolidated under the caption In re Sequenom, Inc. Securities Litigation. The shares were issued to counsel for the
plaintiffs class in accordance with the courts order awarding attorneys fees. See Note 4 for additional discussion of our accrued litigation settlement.

In May 2010, we issued 12,435,000 shares of our common stock at a price of $4.15 per share to certain investors in a private placement. The private placement resulted in aggregate net proceeds of $47.8
million after deducting underwriting commissions and transaction expenses.

In March 2009, our Board of Directors adopted a Share
Purchase Rights Plan (the Rights Plan). The terms of the Rights Plan provide for a dividend distribution of one preferred share purchase right (a Right) for each outstanding share of our common stock, par value $0.001 per share. Common shares that
are newly issued after the record date of March 20, 2009, also carry Rights.

The Rights have certain anti-takeover effects and will
cause substantial dilution to a person or group that attempts to acquire us on terms not approved by our Board of Directors. The Rights should not interfere with any merger or other business combination approved by the Board of Directors, since the
Rights may be amended to permit such acquisition or redeemed by us at $0.001 per Right prior to the earliest of (i) the time that a person or group has acquired beneficial ownership of 15% or more of our shares of common stock or (ii) the
final expiration date, as defined by the Rights Plan.

(11) Share-Based Compensation

We maintain several share-based compensation plans for the grant of incentive and non-qualified stock options, restricted stock awards and restricted
stock unit awards to employees, consultants and non-employee directors. The estimated fair value of share-based payments is measured at the grant date using the Black-Scholes option pricing model and the portion that is ultimately expected to vest
is recognized as stock-based compensation expense over the requisite service period.

For the three months ended September 30, 2010 and
2009, we recorded $2.4 million and $3.0 million, respectively, of compensation expense related to our share-based compensation awards. The compensation expense related to our share-based compensation arrangements is recorded as components of
research and development expenses ($0.9 million and $1.0 million), selling and marketing expenses ($0.7 million and $0.8 million) and general and administrative expenses ($0.8 million and $1.2 million) for the three months ended September 30,
2010 and 2009, respectively.

For the nine months ended September 30, 2010 and 2009, we recorded $7.3 million and $8.8 million,
respectively, of compensation expense related to our share-based compensation awards. The compensation expense related to our share-based compensation arrangements is recorded as a component of research and development expense ($2.5 million and $2.7
million), selling and marketing expense ($2.1 million and $2.5 million) and general and administrative expense ($2.7 million and $3.7 million) for the nine months ended September 30, 2010 and 2009, respectively.

We have not recognized, and do not expect to recognize in the near future, any tax benefit related to stock-based compensation cost as a result of the
full valuation allowance of our net deferred tax assets and our net operating loss carryforwards.

The fair value of options granted to
non-employees is initially estimated at the measurement date using the Black-Scholes pricing model and re-measured at each reporting date. Total stock-based compensation for options granted to non-employees for the three months ended
September 30, 2010 and 2009, was $35,000 and $52,000, respectively, and is included in the statements of operations within research and development expenses ($13,500 and $11,000), sales and marketing expenses ($13,500 and $41,000) and general
and administrative expenses ($8,000 and $0). For the nine months ended September 30, 2010 and 2009, share-based compensation for options granted to non-employees included in the statements of operations was $198,000 and $282,000, respectively,
and is included within research and development expenses ($47,000 and $71,000), sales and marketing expenses ($126,000 and $211,000) and general and administrative expenses ($25,000 and $0).



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Share-Based Compensation Plans

Stock Compensation Plans

In May 2006, our stockholders approved our 2006 equity incentive plan (the 2006 Plan), as the successor to our 1999 stock option plan (the 1999 Plan). In June 2010 our stockholders approved an
increase to the share reserve of 3.0 million shares. As of September 30, 2010, the aggregate number of shares of common stock that may be issued under the 2006 Plan was 9,716,841 shares, plus the number of shares subject to any stock
awards under the 1999 Plan that terminate or are forfeited or repurchased and would otherwise have been returned to the share reserve under the 1999 Plan.

Restricted Stock

The following table summarizes our restricted stock activity for the
quarter ended September 30, 2010:



|                                      |  |                  |           |   |                                      |   |      | 
|------------------------------------- |  | ---------------- | --------- | - | ------------------------------------ | - | ---- | 
|Outstanding                           |  | Number of Shares |           |   | WeightedAverage Grant DateFair Value |  
|Restricted stock - December 31, 2009  |  |                  | 1,269,550 |   |                                      | $ | 3.94 | 
|Granted                               |  |                  | 32,962    |   |                                      |   | 5.52 | 
|Vested                                |  |                  | (59,297   | ) |                                      |   | 5.61 | 
|Cancelled                             |  |                  | (106,725  | ) |                                      |   | 3.86 | 
|                                      |  |                  |           |   |                                      |   |      | 
|Restricted stock  September 30, 2010 |  |                  | 1,136,490 |   |                                      | $ | 3.90 | 
|                                      |  |                  |           |   |                                      |   |      | 

Employee Stock Purchase Plan

In 1999, we adopted the 1999 employee stock purchase plan (the 1999 ESPP). As of September 30, 2010, we had reserved 901,520 shares of common stock for issuance under the 1999 ESPP.

Offerings under the 1999 ESPP are for a duration of six months and consist of one purchase interval. The 1999 ESPP limits stock purchases to (i) no
more than 10,000 shares per individual per offering and (ii) no more than $25,000 per individual per calendar year. Shares are purchased at 85% of the lower of the beginning or end of the period price. As of September 30, 2010, employees
have contributed approximately $0.1 million to the current offering of the 1999 ESPP, since the beginning of the offering period that commenced August 1, 2010. For the three months ended September 30, 2010 and 2009, we have recognized an
expense of $59,000 and a benefit of ($44,000), respectively, as share-based compensation expense related to the 1999 ESPP. For the nine months ended September 30, 2010 and 2009, we have recognized approximately $0.2 million and $0.1
million, respectively, as share-based compensation expense related to the 1999 ESPP.

New-Hire Equity Incentive Plan

In February 2010, our Board of Directors approved a New-Hire Equity Incentive Plan (New-Hire Plan) with a total share reserve of 150,000 shares of common
stock. Equity awards under the New-Hire Plan are eligible to be issued only to persons entering into employment with us and are not available to current or former employees or directors unless there has been a bona fide period of
non-employment. As of September 30, 2010, no equity awards have been issued under the New-Hire Plan.

Warrants

In connection with the acquisition of Axiom Biotechnologies in 2002, we assumed an outstanding warrant to purchase 7,333 Axiom ordinary shares at an
exercise price of $10.50, which was adjusted to become a warrant to purchase 1,535 shares of our common stock at an exercise price of $50.19 per share. As of September 30, 2010, this warrant has not been exercised and expires in December 2011.

In connection with an amendment to our lease for our corporate headquarters in San Diego, California in September 2005, we issued to the
landlord a warrant to purchase 50,000 shares of our common stock with an exercise price of $2.64 per share. The warrant expires in October 2015. As of September 30, 2010, the warrant remained outstanding and exercisable.

In connection with the June 2006 private placement financing, we issued to our placement agent a warrant to purchase 866,666 shares of our common stock
at an exercise price of $2.52 per share. This warrant contains anti-dilution provisions that adjust the exercise price and number of shares subject to the warrants upon reorganization, mergers, stock splits and combinations, reclassifications of our
common stock, or stock dividends. The placement agent subsequently transferred portions of the warrant to certain of its employees. As of September 30, 2010, warrants to purchase 7,500 shares remained outstanding and exercisable and expire in
June 2011.



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Stock Options

The estimated fair value of each stock option award granted was measured on the date of grant using the Black-Scholes option valuation
model with the following weighted-average assumptions for stock option grants for the three months ended September 30, 2010 and 2009:



|                                                                |  |               |      |   |      |   |       |  
|--------------------------------------------------------------- |  | ------------- | ---- | - | ---- | - | ----- | -
|                                                                |  | September 30, |     
|                                                                |  | 2010          |      |   | 2009 |  
|Risk free interest rates                                        |  |               | 2.8  | % |      |   | 2.7   | %
|Volatility                                                      |  |               | 99.9 | % |      |   | 100.7 | %
|Dividend yield                                                  |  |               | 0    | % |      |   | 0     | %
|Expected option life (years)                                    |  |               | 7.4  |   |      |   | 7.0   |  
|Weighted average fair value of stock option grants to employees |  | $             | 4.88 |   |      | $ | 3.10  |  

The determination of fair value using
the Black-Scholes option pricing model is affected by our stock price, as well as assumptions regarding a number of complex and subjective variables. The risk-free interest rate assumption is based upon observed interest rates appropriate for the
expected term of our employee stock options. The expected volatility is based on the historical volatility of our stock. We have not paid any dividends on our common stock since our inception and do not anticipate paying dividends on our common
stock in the foreseeable future. The computation of the expected option life assumption is based on a weighted-average calculation combining the average historical exercise activity with the estimated life of all unexercised stock options.

Share-based compensation expense is only recognized for those awards that are ultimately expected to vest. Forfeitures are required to be
estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Pre-vesting forfeitures were estimated to be 11.7% based on historical experience. Our determination of fair value is
affected by our stock price as well as a number of assumptions that require judgment. Changes in forfeiture estimates impact compensation cost in the period in which the change in estimate occurs.

A summary of the status of our stock option plans as of September 30, 2010, and of changes in stock options outstanding under the plans during the
nine months ended September 30, 2010, are as follows:



|                                                     |  |                          |            |   |                                         |   |       |                                                    |  |  |                          |  |  |   |           | 
|---------------------------------------------------- |  | ------------------------ | ---------- | - | --------------------------------------- | - | ----- | -------------------------------------------------- |  |  | ------------------------ |  |  | - | --------- | 
|Outstanding                                          |  | Shares Subjectto Options |            |   | WeightedAverage ExercisePrice per Share |   |       | WeightedAverageRemainingContractualTerm (in years) |  |  | AggregateIntrinsic Value | 
|Outstanding at December 31, 2009                     |  |                          | 6,172,807  |   |                                         | $ | 9.55  |                                                    |  |  |                          |  |  |   |           | 
|Granted                                              |  |                          | 1,400,450  |   |                                         |   | 5.78  |                                                    |  |  |                          |  |  |   |           | 
|Canceled                                             |  |                          | (437,021   | ) |                                         |   | 28.60 |                                                    |  |  |                          |  |  |   |           | 
|Exercised                                            |  |                          | (1,033,679 | ) |                                         |   | 2.51  |                                                    |  |  |                          |  |  |   |           | 
|                                                     |  |                          |            |   |                                         |   |       |                                                    |  |  |                          |  |  |   |           | 
|Outstanding at September 30, 2010                    |  |                          | 6,102,557  |   |                                         | $ | 8.51  |                                                    |  |  | 7.4                      |  |  | $ | 9,996,875 | 
|                                                     |  |                          |            |   |                                         |   |       |                                                    |  |  |                          |  |  |   |           | 
|Options vested and exercisable at September 30, 2010 |  |                          | 3,430,499  |   |                                         | $ | 8.04  |                                                    |  |  | 6.4                      |  |  | $ | 6,772,570 | 
|                                                     |  |                          |            |   |                                         |   |       |                                                    |  |  |                          |  |  |   |           | 

As of September 30, 2010, there was $19.3 million of unamortized compensation expense related to unvested stock option
awards, which is expected to be recognized over a remaining weighted-average vesting period of 2.3 years. Cash received from stock option exercises for the nine months ended September 30, 2010 and 2009 was $0.3 million and $0.5 million,
respectively. At September 30, 2010, there were 2,427,933 shares available for future option grants.

One of our former executive
officers exercised stock options to purchase an aggregate of 950,745 shares of our common stock in September 2010 and we received the cash proceeds from the exercise of these stock options in October 2010. The receivable for this transaction of
approximately $2.3 million is presented within other current assets in the accompanying condensed consolidated balance sheet as of September 30, 2010.



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(12) Inventories

Inventories are stated at the lower of cost (first-in, first-out) or market value (net realizable value). The components of inventories were as follows
(in thousands):



|                |  |                   |       |  |                  |   |       | 
|--------------- |  | ----------------- | ----- |  | ---------------- | - | ----- | 
|                |  | September 30,2010 |       |  | December 31,2009 |  
|                |  | (Unaudited)       |       |  | (Audited)        |  
|Raw materials   |  | $                 | 3,903 |  |                  | $ | 4,657 | 
|Work in process |  |                   |      |  |                  |   | 11    | 
|Finished goods  |  |                   | 2,123 |  |                  |   | 3,054 | 
|                |  |                   |       |  |                  |   |       | 
|Total           |  | $                 | 6,026 |  |                  | $ | 7,722 | 
|                |  |                   |       |  |                  |   |       | 

Inventories are shown net of excess and obsolescence reserves of $1.1 million and $1.9 million at September 30, 2010
and December 31, 2009, respectively.

(13) Debt and Obligations

Asset-backed Loan

As of September 30, 2010, we had an aggregate of $0.2
million outstanding on our asset-backed loan line related to three fundings with interest rates from 10.6% to 9.73%. All borrowings are secured by the underlying financed equipment. The borrowings are to be repaid in 36 monthly installments with
final payment dates ranging from November 2010 to May 2011. Our rights to borrow funds under this facility expired in December 2008.

Debt

In connection with our
acquisition of SensiGen in February 2009, we assumed two loans with the Michigan Economic Development Corporation with an aggregate balance at the acquisition closing date of approximately $3.2 million. The first loan of approximately $0.3 million
has a stated interest rate of 1% with all payments deferred until March 2013. Commencing March 2013, principal payments of approximately $3,000 are due monthly through March 2018, at which time a final balloon payment of approximately $161,000 is
due. The second loan of approximately $2.9 million has a stated interest rate of 7% with monthly principal payments of approximately $68,000 through September 2012. As of September 30, 2010, we had an aggregate of $1.8 million outstanding on
these loans. Both loans are collateralized by all of Sequenom CMMs tangible and intangible property and rights in which a security interest or lien may be taken.

Capital Lease

In the second quarter of 2009, we entered into a 36 month capital
lease arrangement for new phone equipment, which was capitalized with office furniture and equipment at an aggregate balance of approximately $366,000. As of September 30, 2010, we had an aggregate of $0.2 million outstanding on this capital
lease.

(14) Warranty Costs and Reserves

We estimate a warranty provision related to the sales of our MassARRAY equipment based on our experience of returns and repairs required under the warranty period. We generally provide a one-year warranty
on our MassARRAY system and related equipment. We establish an accrual for estimated warranty expenses associated with system sales based on historical expenses. This expense is recorded as a component of cost of product revenue.

Changes in our warranty liability during the three months ended September 30, 2010, were as follows (in thousands):



|                                 |  |   |     | 
|-------------------------------- |  | - | --- | 
|Balance as of December 31, 2009  |  | $ | 175 | 
|Repairs and replacements         |  |   | 73  | 
|Changes to reserve requirements  |  |   | 1   | 
|                                 |  |   |     | 
|Balance as of September 30, 2010 |  | $ | 249 | 
|                                 |  |   |     | 

(15) Litigation

In November 2001, we and certain of our current or former officers and directors were named as defendants in a class action shareholder complaint filed by Collegeware USA in the U.S. District Court for
the Southern District of New York (now captioned In re Sequenom, Inc. IPO Securities Litigation) Case No. 01-CV-10831. In the complaint, the plaintiffs allege



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that our underwriters, certain of our officers and directors and we violated the federal securities laws because our registration statement and prospectus contained untrue
statements of material fact or omitted material facts regarding the compensation to be received by and the stock allocation practices of the underwriters. The plaintiffs seek unspecified monetary damages and other relief. Similar complaints were
filed in the same District Court against hundreds of other public companies that conducted initial public offerings of their common stock in the late 1990s and 2000 (the IPO Cases).

In October 2002, our officers and directors were dismissed without prejudice pursuant to a stipulated dismissal and tolling agreement with the plaintiffs. In February 2003, the District Court
dismissed the claim against us brought under Section 10(b) of the Exchange Act, without giving the plaintiffs leave to amend the complaint with respect to that claim. The District Court declined to dismiss the claim against us brought
under Section 11 of the Securities Act of 1933, as amended (the Securities Act).

In September 2003, pursuant to the authorization of a
special litigation committee of our board of directors, we approved in principle a settlement offer by the plaintiffs. In September 2004, we entered into a settlement agreement with the plaintiffs. In February 2005, the District Court issued a
decision certifying a class action for settlement purposes and granting preliminary approval of the settlement subject to modification of certain bar orders contemplated by the settlement. In August 2005, the District Court reaffirmed class
certification and preliminary approval of the modified settlement. In December 2006, the U.S. Court of Appeals for the Second Circuit vacated the District Courts decision certifying as class actions the six lawsuits designated as focus
cases. Thereafter the District Court ordered a stay of all proceedings in all of the lawsuits pending the outcome of plaintiffs petition to the Second Circuit for rehearing en banc. In April 2007, the Second Circuit
denied plaintiffs rehearing petition, but clarified that the plaintiffs may seek to certify a more limited class in the District Court. Accordingly, the settlement as originally negotiated was terminated pursuant to stipulation and will not
receive final approval.

In February 2009, liaison counsel for plaintiffs informed the District Court that a new settlement of all IPO Cases
had been agreed to in principle, subject to formal approval by the parties and preliminary and final approval by the District Court. In April 2009, the parties submitted a tentative settlement agreement to the District Court and moved for
preliminary approval thereof. In June 2009, the District Court granted preliminary approval of the tentative settlement and ordered that notice of the settlement be published and mailed to class members. In September 2009, the District Court held a
final fairness hearing. In October 2009, the District Court certified the settlement class in each IPO Case and granted final approval to the settlement. Thereafter, three shareholders filed a Petition for Permission to Appeal Class Certification
Order, asserting that the District Courts certification of the settlement classes violates the Second Circuits earlier class certification decisions in the IPO Cases and a number of shareholders also filed direct appeals, objecting to
final approval of the settlement. If the settlement is affirmed on appeal, the settlement will become effective and will result in the dismissal of all claims against us and our officers and directors with prejudice, and our pro rata share of the
settlement fund will be fully funded by insurance.

In April 2009, we announced that the expected launch of our test for Trisomy 21 had been
delayed and that we were no longer relying on our previously announced test data and results for that test, as a result of inadequately substantiated claims, inconsistencies and errors and inadequate protocols and controls, which included: the
mischaracterization of tests as having been conducted in a blinded manner (i.e., that the tests had been performed by scientists who did not know the true outcomes for the samples tested before the test results had been determined); the
improper unblinding of true outcomes for samples being tested; the use of the unblinded true outcomes to alter and improve reported test results; the unsubstantiated reporting of test results for low-risk samples (i.e., samples from expectant
mothers who were less likely to be carrying a fetus with Trisomy 21) without knowing the true outcomes for such samples; the failure to perform testing on those low-risk samples; the inadequate storage of serum samples resulting in breakdown of
nucleic acids; and other improper practices. Following the April 2009 announcement, several complaints were filed in the U.S. District Court for the Southern District of California against us and certain of our current and former officers and
directors on behalf of certain purchasers of our common stock. The complaints included claims asserted under Sections 10 and 20(a) of the Exchange Act and Sections 11 and 12(a)(2) of the Securities Act and were brought as shareholder class actions.
In general, the complaints alleged that we and certain of our officers and directors violated federal securities laws by making materially false and misleading statements regarding our Trisomy 21 test under development, thereby artificially
inflating the price of our common stock. In September 2009 the complaints were consolidated under the caption In re Sequenom, Inc. Securities Litigation, Master File No. 3:09-cv-00921 LAB-WMC and a lead plaintiff was appointed. In
December 2009 we entered into a stipulation of settlement with the lead plaintiff on behalf of the plaintiffs class. Pursuant to the terms of the stipulation, we agreed to pay $14 million, which has been funded by insurance proceeds. We also
agreed to issue to the plaintiffs class approximately 6.8 million shares of our common stock, and to adopt or continue our implementation of changes and additions to certain corporate governance policies, protocols and practices. The
court held a final settlement approval hearing on May 3, 2010, following which the court approved the final settlement. The time for appeals lapsed without any appeal. We have approximately $44.9 million in accrued litigation settlement related
to this matter as of September 30, 2010 (see Note 4).



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In May 2009, a shareholder
derivative complaint was filed in the Superior Court of California for the County of San Diego against certain of our current and former directors and officers. Thereafter, a number of similar actions, also styled as shareholder derivative suits,
were filed in state court and were consolidated in a single court. In July 2009 the first of three shareholder derivative suits were filed in the U.S. District Court for the Southern District of California. The federal shareholder derivative actions
were consolidated before a single court under the caption In re Sequenom, Inc. Derivative Litigation, S.D. Cal. Case No. 09-CV-1341 LAB (WMc) and plaintiffs filed a single consolidated complaint. A separate federal derivative compliant,
Ries, et al. v. Stylli, et al, case no. 09-CV-2517 LAB (WMc), was filed thereafter and it was coordinated with the consolidated federal derivative action. The state and federal shareholder derivative actions are hereinafter collectively
referred to as the Derivative Actions. The complaints in the Derivative Actions allege breaches of fiduciary duties by the defendants and other violations of law. In general, the complaints allege that our directors and certain of our
officers caused or allowed for the dissemination of materially false and misleading statements regarding our Trisomy 21 test then under development, thereby artificially inflating the price of our common stock. In May 2010, we entered into a
stipulation of settlement to resolve the Derivative Actions. The current and former directors and officers named as individual defendants in the Derivative Actions also entered into the stipulation of settlement. In exchange for a release of all
claims by the plaintiffs and a dismissal of the Derivative Actions, we agreed (i) to adopt or continue certain corporate governance measures and (ii) to pay the plaintiffs attorneys a total of $2.5 million, of which $1.0 million has
been funded by insurance proceeds. The U.S. District Court issued its final approval of the settlement in accordance with the terms of the stipulation of settlement on July 26, 2010, and the court entered an order dismissing the federal
shareholder derivative actions on July 27, 2010. In accordance with the terms of the stipulation of settlement, the parties in the state shareholder derivative actions filed a joint stipulation to dismiss the actions with prejudice in San Diego
Superior Court on July 27, 2010. In connection with the final approval of settlement on July 26, 2010, we remitted a cash payment of $338,000 and issued 200,000 shares of our common stock at a fair value of $5.81 per share in payment of
the portion of the plaintiffs attorneys fees not funded by insurance proceeds during the third quarter of 2010.

In
June 2009, we received written notification that the Enforcement staff of the SEC has initiated an investigation following our April 2009 announcement regarding our Trisomy 21 test then under development. As part of this investigation, the
SEC staff has also required us to produce information with respect to our announcement relating to our offer to acquire EXACT Sciences, Inc. in January 2009. We intend to continue to cooperate fully with the SEC in this matter.

In June 2010, the SEC filed a complaint against Elizabeth Dragon, who was formerly our Senior Vice President, Research and Development. The
complaint alleged that between June 2008 and January 2009 Dr. Dragon made or allowed for the dissemination of materially false and misleading statements regarding our Trisomy 21 test then under development, thereby inflating the price of our
stock. The SEC sought a permanent injunction against any future violations of the federal securities laws by Dr. Dragon, civil penalties, and imposition of an officer and director bar against her. On the same day, Dr. Dragon filed a
consent to judgment of permanent injunction and other relief. In the consent to judgment, Dr. Dragon, without admitting or denying the allegations in the SECs complaint, agreed to the permanent injunction against future violations of
federal securities laws, the director and officer bar, and civil penalties to be determined by the court.

Following our September 2009
announcement regarding the work and recommendations of a special committee of independent directors after it had completed its independent investigation of activity related to the Trisomy 21 test, representatives of the Office of the U.S. Attorney
for the Southern District of California contacted us to inquire about the announcement. We intend to continue to cooperate fully with the U.S. Attorney and the Federal Bureau of Investigation (FBI) in this matter.

In June 2010, the U.S. Attorney filed a criminal information against Dr. Dragon. The criminal information charged Dr. Dragon with one
count of conspiracy to commit securities fraud by conspiring to disseminate materially false and misleading statements regarding our Trisomy 21 test then under development. On the same day, Dr. Dragon pled guilty to the criminal information,
and the magistrate judge assigned to this matter recommended that the district court judge accept Dr. Dragons guilty plea. The U.S. District Court has not yet sentenced Dr. Dragon.

Following our September 2009 announcement, representatives of NASDAQ also contacted us to inquire about the announcement. We intend to continue to
cooperate fully with NASDAQ in this matter in the event that NASDAQ has any further inquiries.

In October 2009, plaintiff Xenomics, Inc. (now
known as TrovaGene) filed a complaint in the Supreme Court of the State of New York naming us as the defendant. In the complaint, the plaintiff alleged that due to materially false and misleading statements regarding our Trisomy 21 test under
development, we had breached the license agreement entered into by the parties on October 29, 2008, which provides us with exclusively licensed patent rights for the use of fetal nucleic acids obtained from maternal urine, and that the
plaintiff has suffered damages as a result. The plaintiff sought equitable relief and $300 million in damages. In December 2009, we removed the case to the U.S. District Court for the Southern District of New York. In May 2010, the
district court granted our motion to dismiss the action because the license agreement specifically provides that if TrovaGene seeks to resolve a dispute arising under the agreement, it must do so by commencing an arbitration in San Diego. As of the
date of this report, TrovaGene has not commenced arbitration proceedings in San Diego.



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On August 26, 2010, Paul Hawran,
our former chief financial officer, sued the three directors who comprised the special committee that conducted the investigation of activity related to the Trisomy 21 test, alleging that they had defamed him, invaded his privacy, negligently and
intentionally interfered with his prospective economic advantage, and committed unfair business practices under California Business and Professions Code Section 17200. Mr. Hawran alleged in his complaint that he was asked to resign because
he had raised concerns about the conduct of certain of our directors. The lawsuit, Hawran v. Hixson et al, case no. 37-2010-00058632-CU-DF-NC, was filed in the Superior Court of California for the North County of San Diego. On September 24,
2010, we were served with an amended complaint in this lawsuit, in which Mr. Hawran named us as a defendant in addition to the three individuals previously named and added claims of breach of contract and intentional and negligent
misrepresentation. The individual defendants and we intend to vigorously defend ourselves against the claims advanced. On October 6, 2010, the defendants filed a motion to strike the complaint under California Code of Civil Procedure
Section 425.16 on the grounds that Mr. Hawrans claims arise from acts in furtherance of the defendants right of petition or free speech under the United States or California Constitution in connection with a public issue. On
October 12, 2010, the defendants filed a demurrer to each and every cause of action in the complaint. A hearing on both the motion to strike and the demurrer has been set for December 10, 2010.

In addition, from time to time, we may be involved in litigation relating to claims arising out of our operations in the normal course of business.

Because of the uncertainties related to the incurrence, amount and range of loss on any pending litigation, investigation, inquiry or claim,
management is currently unable to predict the ultimate outcome of any litigation, investigation, inquiry or claim, determine whether a liability has been incurred or make an estimate of the reasonably possible liability that could result from an
unfavorable outcome. An adverse ruling or outcome in any lawsuit involving us could materially affect our business, liquidity, consolidated financial position or results of operations ability to sell one or more of our products or could result in
additional competition. In view of the unpredictable nature of such matters, we cannot provide any assurances regarding the outcome of any litigation, investigation, inquiry or claim to which we are a party or the impact on us of an adverse ruling
of such matters.

(16) Income Taxes

Our 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 the expected future tax benefit to be derived from tax loss and credit carryforwards. Deferred tax assets and liabilities are determined using the enacted
tax rates in effect for the years in which those tax assets are expected to be realized. A valuation allowance is established when it is more likely than not the future realization of all or some of the deferred tax assets will not be achieved. The
evaluation of the need for a valuation allowance is performed on a jurisdiction by jurisdiction basis, and includes a review of all available positive and negative evidence. As of September 30, 2010 and December 31, 2009, we maintained a
valuation allowance against U.S. and foreign deferred tax assets that we concluded have not met the more likely than not threshold. Changes in the valuation allowance when they are recognized in the provision for income taxes are
included as a component of the estimated annual effective tax rate.

We recognize excess tax benefits associated with share-based compensation
to stockholders equity only when realized. When assessing whether excess tax benefits relating to share-based compensation have been realized, we follow the with-and-without approach, excluding any indirect effects of the excess tax
deductions. Under this approach, excess tax benefits related to share-based compensation are not deemed to be realized until after the utilization of all other tax benefits available to us.

We recognize the impact of a tax position in our financial statements only if that position is more likely than not of being sustained upon examination by taxing authorities, based on the technical merits
of the position. Any interest and penalties related to uncertain tax positions will be reflected in income tax expense.



|Item 2. | Managements Discussion and Analysis of Financial Condition and Results of Operations
|------- | -------------------------------------------------------------------------------------

All statements in this report that are not historical are forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. These
forward-looking statements can generally be identified as such because the context of the statement will include words such as may, will, intend, plans, believes, anticipates,
expects, estimates, predicts, potential, continue, opportunity, goals, or should, the negative of these words or words of similar import. Similarly,
statements that describe our future plans, strategies, intentions, expectations, objectives, goals or prospects are also forward-looking statements. These forward-looking statements are or will be, as applicable, based largely on our expectations
and projections about future events and future trends affecting our



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business, and so are or will be, as applicable, subject to risks and uncertainties including but not limited to the risk factors discussed in this report, that could cause actual results to
differ materially from those anticipated in the forward-looking statements. We caution investors that there can be no assurance that actual results or business conditions will not differ materially from those projected or suggested in such
forward-looking statements. Our views and the events, conditions and circumstances on which these future forward-looking statements are based, may change. All forward statements are qualified in their entirety by this cautionary statement and we
undertake no obligation to revise or update any such statements to reflect events or circumstances after the date hereof.

SEQUENOM®, SpectroCHIP®, iPLEX®, and MassARRAY® are
registered trademarks and EpiTYPER, SEQureDx, MassCLEAVE, iSEQ, AttoSense and SensiGene are trademarks of Sequenom, Inc. This report may also refer to trade names and trademarks of other organizations.

The MassARRAY platform, OncoCarta, iPLEX, iSEQ, EpiTYPER and MelaCarta are for research use only, or RUO, and not for use in diagnostic procedures.

Sequenom, Inc. was incorporated in 1994 under the laws of the State of Delaware. As used in this report, the words we,
us, our, and Sequenom refer to Sequenom, Inc. and its wholly-owned subsidiaries on a consolidated basis, unless explicitly noted otherwise.

Overview

We are a molecular diagnostic testing and genetics analysis company committed to
providing products, services, diagnostic testing, applications and genetic analysis products that translate the results of genomic science into solutions for biomedical research, translational research, molecular medicine applications, and
agricultural, livestock, and other areas of research. Our development and commercialization efforts in various diagnostic areas include noninvasive womens health related and prenatal diagnostics, age-related macular degeneration diagnostics,
oncology, infectious diseases, and other medical conditions, disorders and diseases.

Operating Segments

We operate our business on the basis of two reportable segments, molecular diagnostics and genetic analysis. A further description of the operations of
these segments is below. The following table sets forth revenues, and operating loss for our molecular diagnostics and genetic analysis segments for the three and nine months ended September 30, 2010 and 2009 (in thousands):



|                      |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|--------------------- |  | ------------------------------- | ------- | - | ------------------------------ | - | ------- | ---- |  | - | ------- | - |  | - | ------- | -
|                      |  | Three months endedSeptember 30, |         |   | Nine months endedSeptember 30, |  
|                      |  | 2010                            |         |   | 2009                           |   |         | 2010 |  |   | 2009    |  
|                      |  | (Unaudited)                     |         |   | (Unaudited)                    |  
|Revenues:             |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Molecular diagnostics |  | $                               | 687     |   |                                | $ |        |      |  | $ | 1,335   |   |  | $ |        |  
|Genetic analysis      |  |                                 | 10,997  |   |                                |   | 9,220   |      |  |   | 32,371  |   |  |   | 27,077  |  
|                      |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Total revenues        |  | $                               | 11,684  |   |                                | $ | 9,220   |      |  | $ | 33,706  |   |  | $ | 27,077  |  
|                      |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Operating loss(1):    |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Molecular diagnostics |  | $                               | (9,619  | ) |                                | $ | (6,708  | )    |  | $ | (27,114 | ) |  | $ | (19,509 | )
|Genetic analysis      |  |                                 | 3,803   |   |                                |   | 2,583   |      |  |   | 8,314   |   |  |   | 2,719   |  
|Unallocated           |  |                                 | (17,149 | ) |                                |   | (10,930 | )    |  |   | (80,084 | ) |  |   | (36,357 | )
|                      |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  
|Total operating loss  |  | $                               | (22,965 | ) |                                | $ | (15,055 | )    |  | $ | (98,884 | ) |  | $ | (53,147 | )
|                      |  |                                 |         |   |                                |   |         |      |  |   |         |   |  |   |         |  



|(1) | Management evaluates operating loss exclusive of general and administrative expenses, which includes litigation settlement expense, net of revaluation adjustments, for
the three and nine months ended September 30, 2010, share-based compensation, restricted stock compensation expense, indirect overhead expenses and allocated and absorbed costs, as these costs are not allocated to our business segments for
performance assessment by our chief operating decision maker.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We do not discretely allocate assets to our operating segments,
nor does our chief operating decision maker evaluate operating segments using discrete asset information.



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Molecular Diagnostics and SEQureDx
Technology

Molecular Diagnostics

We are committed to researching, developing and pursuing the commercialization of various noninvasive molecular diagnostic tests for prenatal genetic disorders and diseases, womens health related
disorders and diseases, age-related macular degeneration, or AMD, oncology, infectious diseases, and other medical conditions, disorders and diseases. Currently, we are primarily focused on developing and commercializing prenatal diagnostic tests
using our foundational, patent protected, noninvasive, circulating cell-free fetal, or ccff, nucleic acid-based assay technology which we in-license from Isis Innovation Limited, or Isis. This technology uses a standard maternal blood draw for a
prenatal diagnosis or risk assessment in order to provide reliable information about the status of the fetus early in pregnancy. We have branded our diagnostic technology for prenatal diagnostics under the trademark SEQureDx. Our efforts in
molecular diagnostics are focused on developing noninvasive diagnostics using our proprietary MassARRAY system and using nucleic acid sequencing platforms provided by other parties. We plan to conduct the development, validation, and other
activities necessary to file submissions with the U.S. Food and Drug Administration, or FDA, seeking approval for commercialization in the United States.

Supporting our initiatives in womens health, oncology, ophthalmology and infectious disease we completed our acquisition of the complete AttoSense portfolio of gene-based molecular tests and related
assets from SensiGen, LLC, or SensiGen, in February 2009. The acquisition included highly-sensitive and specific tests for the detection and monitoring of human papillomavirus, or HPV, and other tests. These tests will require further development
and have not been commercialized and we are seeking collaborative partnership opportunities with other parties for the further development and commercialization of these tests.

Sequenom Center for Molecular Medicine

Sequenom Center for Molecular Medicine, LLC, or
Sequenom CMM, is our wholly-owned subsidiary, located in Grand Rapids, Michigan, which operates a laboratory accredited by the College of American Pathology, or CAP, and compliant with the certification requirements under the Clinical Laboratory
Improvement Amendments, 1988, as amended, or CLIA. Sequenom CMM develops and validates laboratory developed tests, or LDTs, for use in and solely by Sequenom CMM as a testing service to physicians. Sequenom CMM utilizes our patented SEQureDx ccff
technology in developing its LDTs. Patient samples are collected by physicians and submitted to Sequenom CMM for testing and the results are reported back to the ordering physician.

In early 2010, Sequenom CMM validated and began offering to physicians two LDTs, the SensiGene Rhesus D genotyping test and the
SensiGene Fetalxysex determination test, both using our
patented SEQureDx ccff technology. In September 2009, Sequenom CMM completed validation and began offering to physicians a DNA-based cystic fibrosis carrier screening test. In August 2010, we announced that Sequenom CMM would no longer offer the
Fetalxysex determination test after September 15,
2010.

Sequenom CMM is in the process of establishing an additional laboratory in San Diego, California that complies with State of California
CLIA requirements. Sequenom CMMs laboratory in San Diego was inspected on October 6, 2010 by the California Department of Public Health and was found to be in compliance with all applicable Title 17 California Code of Regulations and
California Business and Professionals Code statutes and regulations for clinical laboratories. A recommendation for license approval was made and Sequenom CMM is awaiting the issuance of a California clinic laboratory license. We have invested
substantially in Sequenom CMMs information technology infrastructure to enhance the capabilities of the laboratory to track samples and provide electronic ordering and reporting and have put in place sample collection and transportation
logistics that can be readily scaled as demand for its molecular diagnostic testing services increases. Sequenom CMM continues to negotiate and enter into contracts with third party payors to establish pricing for its LDTs and provide reimbursement
recommendations.

Sequenom CMM is currently developing a potential LDT for assessing pregnant women at high risk of carrying a fetus with the
chromosomal aneuploidy Trisomy 21. We announced in April 2009 that previously reported test data and results for the noninvasive prenatal test for Trisomy 21 then under development could not be relied upon. As a result, the completion and launch of
that test did not occur. Sequenom CMM is currently no longer trying to develop a test that analyzes fetal RNA in maternal blood samples. Instead, Sequenom CMM is focusing its current development efforts on a noninvasive prenatal Trisomy 21 test that
analyzes DNA extracted from maternal blood samples utilizing massively parallel sequencing. DNA is more stable than RNA, and a DNA-based method could lead to the development of a test that may be useful across a wide range of genetic backgrounds.
With technological advances and projected instrument and reagent costs of massively parallel sequencing declining rapidly, Sequenom CMM believes that a Trisomy 21 test on a massively parallel sequencing platform is commercially feasible and
potentially attractive compared to other platforms. The goal is to design a test that has better specificity and sensitivity than currently available screening tests, could be used during the first and second trimesters of pregnancy, has maximum
ethnic coverage of the global population and is a direct genetic test, not a surrogate marker. There is no guarantee that Sequenom CMM will be able to achieve any of these objectives.



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Sequenom CMM is also in the process of
developing a potential LDT to predict genetic predisposition to late-stage AMD, which is a prevalent, late onset, genetically linked vision disorder that is the most common cause of legal blindness in the elderly. Supporting this initiative, in
February 2010, we entered into a license agreement with Optherion, Inc., or Optherion, under which we and our affiliated companies were granted an exclusive, worldwide, royalty-bearing license to know-how and a consolidated portfolio of patent
rights that had been licensed to Optherion by a number of prominent academic institutions, for research and commercial use, including LDTs or in vitro diagnostic tests, in conjunction with various types of technology platforms.

Under the terms of the agreement, in the event that the first commercial sale of a licensed product in the United States has not occurred on or before
January 31, 2011, we will pay Optherion a non-creditable license maintenance fee equal to $260,000 per year. The license maintenance fee will be pro-rated for any period less than a full year before the first commercial sale of a licensed
product in the United States. Following the first commercial sale of a licensed product in the United States, we will no longer be required to pay the license maintenance fee, but instead we will pay Optherion a minimum royalty payment each year
during the term of the agreement ranging between $260,000 and $270,000 per year and such minimum payment shall be creditable against any royalties due based upon licensed product sales. We have also agreed to make payments to Optherion upon the
achievement of specified development, regulatory and commercial milestones, and during the life of the patent claims licensed under the agreement, royalties on the cumulative worldwide annual net sales of products successfully developed and
commercialized covered by the patent claims and know-how licensed under the agreement. We also agreed, upon entry into the agreement, to reimburse Optherion for its prior patent related costs and expenses in the amount of approximately $1.1
million. The agreement will remain in force in each country until the expiration of our obligation to make royalty payments in such country, subject to earlier termination by either party upon uncured material breach or other specified
circumstances. Optherion may terminate the agreement if we challenge the validity of any patent covered by the licensed technology, if we abandon or suspend our research, development, marketing or commercialization of the licensed products, or if we
fail to comply with certain insurance requirements set forth in the agreement. We may terminate the agreement for any reason upon 90 days prior written notice, provided that if such notice of termination is delivered prior to the first anniversary
of the effective date of the agreement, we shall be required to pay Optherion a non-creditable termination fee of $2,000,000. In the event that the agreement expires pursuant to its terms, we will retain the licenses and sublicenses granted under
the agreement as fully paid and royalty free, subject to certain specified limitations.

Historically, the FDA has exercised enforcement
discretion and exempted from regulation LDTs created and used by the same laboratory. During a public meeting held in July 2010, the FDA explained that it is reconsidering its policy of enforcement discretion over LDTs. In the public meeting notice
the agency cited a variety of safety concerns related to current LDTs, noting that the tests have become increasingly complex and utilized for significant medical decisions, sometimes in place of similar tests that have been reviewed and approved by
the FDA. As part of the FDAs evolving position on the regulation of LDTs, the FDA has recently issued letters to a number of companies that primarily related to direct-to-consumer genetic testing products. In these letters, the FDA expressed
concern about consumers making medical decisions in reliance on genetic tests that have not undergone the FDAs premarket review. However, no formal guidance has yet been issued discussing the nature of the changes the FDA may make with respect
to the regulation of LDTs, nor the scope of potential regulation. Although Sequenom CMM does not sell its testing services directly to consumers, we also received a letter from the FDA in July 2010. We responded to the FDA by letter in August 2010
and met with the FDA in September 2010. We reiterated at that meeting that Sequenom CMMs LDTs are physician-ordered and neither we nor Sequenom CMM are involved in any direct-to-consumer marketing of tests of any kind. The FDA indicated it had
no further questions on the direct-to-consumer issue at this time. We will continue to monitor potential changes as the FDAs LDT policy evolves to ensure Sequenom CMMs activities are consistent with the FDAs most current policy.

Prenatal Diagnostics Licenses

We have exclusively in-licensed patent rights (including U.S. Patent No. 6,258,540 and its foreign equivalents, and pending United States patent application publication no. US2009/0029377 A1 and its
pending foreign equivalents) to use cell-free fetal nucleic acids for diagnostic testing of serum and plasma samples, and in some cases whole blood samples, obtained from pregnant women from Isis and the Chinese University of Hong Kong. Generally,
our exclusive license rights, which are platform independent and not limited to mass spectrometry, cover the general diagnostic use of cell-free fetal nucleic acids derived from maternal plasma or serum in territories including the United States,
Europe, Australia, Canada, Hong Kong and Japan, as well as certain non-exclusive rights in China.

In October 2005, and as amended thereafter,
we entered into the agreement with Isis (the Isis Agreement), pursuant to which Isis granted us an exclusive royalty-bearing license in the United States, Canada, France, Germany, Great Britain and other countries in Europe, to develop, use and
market products covered by the patent claims of U.S. Patent No. 6,258,540 and its foreign equivalents, licensed under the Isis Agreement (the Licensed Products), except for the field of Rhesus D blood typing



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by real time polymerase chain reaction (RT-PCR) amplification platforms in Europe. The licensed technology, including improvements made by the inventors prior to the Isis Agreement, covers
noninvasive prenatal genetic diagnostic testing on fetal nucleic acids.

In October 2006 we entered into an amendment to the Isis Agreement
pursuant to which, in exchange for an upfront payment by us and entitlement to milestone and royalty payments, Isis granted us an expanded exclusive license including the field of prenatal gender determination for social or lifestyle purposes and an
expanded territory for the field of gender determination for social or lifestyle purposes including Japan and Australia. In November 2007, we entered into a second amendment to the Isis Agreement pursuant to which, in exchange for an upfront payment
by us, a right to a milestone fee upon completion of a specified event, and royalty payments on sales, Isis granted us an expanded licensed territory to include Japan, Australia, and Hong Kong, excluding in the case of Hong Kong the field of gender
determination for social or lifestyle purposes. In November 2009, we entered into a third amendment to the Isis Agreement pursuant to which Isis agreed to a modification of certain time-based commercial launch milestones relating to aneuploidy and
other Licensed Products. In exchange for this modification, we agreed to make an immediate one-time payment of $1,000,000, increase royalty payments under the agreement during the final 12 months of the patent term and increase the specified minimum
royalty amounts.

We also have an exclusive option to negotiate a further license of any improvements made by Isis inventors. Subject to the
license rights granted under the Isis Agreement, intellectual property rights created in connection with improvements made to the licensed technology will belong to the party developing the improvements. We also granted a perpetual royalty-free
license to the University of Oxford, which is the parent of Isis, to use and publish material relating to the licensed technology and any of our improvements solely for non-commercial use. The University of Oxfords right to publish is subject
to our right to delay publication of information to protect the licensed technology or our improvements.

We have agreed to make up-front
payments to Isis and pay to Isis royalties on net sales of Licensed Products, including specified minimum royalty amounts, and milestone payments upon commercial events with respect to Licensed Products for particular indications.

The Isis Agreement will remain in force for the life of any patent issued in connection with the patent application covering the licensed technology,
subject to earlier termination by either party upon uncured material breach or other specified circumstances. Isis may terminate the Isis Agreement if we file a petition to wind-up or dissolve or upon 30 days written notice if we were to challenge
the validity of the patent rights covering the licensed technology or fail to make the up-front payments as provided in the Isis Agreement. We may terminate the Isis Agreement for any reason with nine months advance written notice. In the event we
fail to achieve certain milestone requirements with respect to particular indications, Isis may convert the exclusive license into a non-exclusive license with respect to those indications.

We have also exclusively in-licensed numerous patent rights from the Chinese University of Hong Kong (including pending United States patent application publication no. US2009/0029377 A1 and its pending
foreign equivalents covering the use of massively parallel sequencing for prenatal diagnostics) and Xenomics Inc. (now known as TrovaGene, Inc.), covering the general use, on any technology platform, of fetal nucleic acids derived from maternal
plasma, serum, urine, and in some cases whole blood, for noninvasive prenatal genetic diagnostic testing, including genetic, expression-based, sequencing-based and epigenetic-based assays and tests.

Our license agreement with TrovaGene provides us with exclusively licensed patent rights (including United States Patent Nos. 6,251,638; and RE 39,920)
for the use of fetal nucleic acids obtained from maternal urine. The license provides us with the exclusive global right to use transrenal fetal DNA in maternal urine for noninvasive prenatal diagnostics and analysis on a technology-independent
basis for all uses, excluding the limited field of fetal gender determination solely by the presence of Y chromosome. This intellectual property for urine-based tests provides us with additional options for test development and commercialization. We
have collected and continue to collect urine samples for purposes of developing urine-based tests and we have initiated exploratory experiments. The licensed intellectual property includes issued patents in the United States and Europe and is part
of our continuing strategy to expand and protect our SEQureDx technology through the identification and licensing of new technologies and sampling methodologies. As described elsewhere in this report, TrovaGene has asserted claims regarding our
rights under the license agreement.

We also hold exclusive rights to issued patents and pending patent applications providing fundamental
patent rights for digital PCR technologies and methods through a licensing agreement with Genomic Nanosystems, LLC, a wholly-owned subsidiary of the Cytonix Corporation. The issued patents are United States Patent Nos. 6,143,496; 6,391,559; and
7,459,315 and will expire in 2017. The license provides us with the exclusive right to use patented and patent pending digital PCR methods on any platform for noninvasive prenatal diagnostics and analysis for any sample (for example, fetal cells,
amniocentesis fluids, plasma, urine, etc.). We also secured the exclusive right to use digital PCR methods in conjunction with mass spectrometry for any commercial, diagnostic or research purpose, excluding second generation sequencing.



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In January 2007, as part of our
platform independent commercialization strategy, we announced our first commercial partnership with Lenetix Medical Screening Laboratory, Inc., on a non-exclusive basis, who had developed a CLIA validated test for Rhesus D blood incompatibility
using RT-PCR (the Lenetix Agreement). In December 2007, Lenetix received New York State approval of a noninvasive prenatal LDT performed on a RT-PCR platform to detect fetal Rhesus D status (including male sex determination as an internal control)
in the second trimester of pregnancy, based on our technology licensed and the work performed under the Lenetix Agreement. Commercial sales of the test by Lenetix commenced in January 2008. We have not derived to date and do not expect to derive
significant revenues from the Lenetix Agreement.

Genetic Analysis

Our proprietary MassARRAY system is comprised of hardware, software applications, consumable chips and reagents. It is a high performance (in speed, accuracy and cost efficiency) nucleic acid analysis
platform that quantitatively and precisely measures genetic target material and variations. Our platform is widely accepted as a leading high-performance DNA analysis platform for genotyping, somatic mutation analysis and fine mapping markets and
continues to gain traction for applications, such as agricultural genomics and clinical research. Our customers include premier clinical research laboratories, bio-agriculture, bio-technology and pharmaceutical companies, academic institutions, and
various government agencies worldwide. To provide customer support for our expanding user base and in an effort to maximize market penetration, we have established direct sales and support personnel serving North America, Europe and Asia, in
addition to distribution partners in several major countries throughout the world.

Our MassARRAY system provides reliable results for a wide
range of DNA/RNA analysis applications including single nucleotide polymorphism, or SNP genotyping, detection of mutations, analysis of copy number variants and other structural genome variations. In addition, the system provides quantitative gene
expression analysis, quantitative DNA methylation analysis, comparative sequence analysis of haploid organisms, SNP discovery, and oligonucleotide quality control. These applications are provided through proprietary application software that
operates on the MassARRAY platform and through the purchase of consumable chips and reagent sets. While the MassARRAY system is versatile across many applications, it is a robust and cost-effective genotyping and somatic mutation analysis solution
enabled through our RUO iPLEX multiplexing assay, which permits multiplexed SNP and somatic mutation analysis. In April 2010 we announced the launch of our next-generation mass spectrometry system for RUO, the MassARRAY Analyzer 4. This new high
performance nucleic acid analysis platform has been designed to meet customer demand for a bench top instrument with greater flexibility across multiple applications, improved reliability and faster performance and is designed to empower the basic
and translational research community to advance findings from discovery genetic and biomarker studies toward biomarker validation and clinical utility in diagnosis, prognosis and monitoring of diseases.

Our research and development efforts in genetic analysis are committed to producing new and improved components and applications for the MassARRAY system
that deliver greater system versatility and higher data quality at a competitive price per data point. These research and development activities and new applications also serve to facilitate and support our diagnostics initiatives.

As a result of weak demand for our MassARRAY systems resulting from the economic environment in early 2009, in April 2009 we formally approved and
implemented a cost cutting initiative in our genetic analysis business, which resulted in approximately $8.0 million decrease in costs in 2009. This initiative included a decrease in the genetic analysis workforce that resulted in a cumulative
charge of approximately $1.6 million for the year ended December 31, 2009 in connection with one-time termination benefits, office closures and other related costs.

Critical Accounting Policies and Estimates

Our condensed consolidated financial statements
are prepared in accordance with U.S. generally accepted accounting principles, or GAAP. These accounting principles require us to make certain estimates, judgments and assumptions. We believe that the estimates, judgments and assumptions upon which
we rely are reasonable based upon information available to us at the time that these estimates, judgments and assumptions are made. These estimates, judgments and assumptions can affect the reported amounts of assets and liabilities as of the date
of the financial statements as well as the reported amounts of revenues and expenses during the periods presented. To the extent there are material differences between these estimates, judgments or assumptions and actual results, our financial
statements will be affected. The accounting policies that reflect our more significant estimates, judgments and assumptions and which we believe are the most critical to aid in fully understanding and evaluating our reported financial results
include the following:



| |  |  | revenue recognition;
| | - |  | --------------------



| |  |  | goodwill and impairment evaluations of long-lived assets;
| | - |  | ---------------------------------------------------------



| |  |  | allowance for doubtful accounts;
| | - |  | --------------------------------



| |  |  | reserves for obsolete and slow-moving inventory;
| | - |  | ------------------------------------------------



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| |  |  | warranty costs;
| | - |  | ---------------



| |  |  | income taxes; and
| | - |  | -----------------



| |  |  | share-based compensation.
| | - |  | -------------------------

In many cases, the accounting treatment of a particular transaction is specifically dictated by GAAP and does not require managements judgment in
its application. There are also areas in which managements judgment in selecting among available alternatives would not produce a materially different result. Our senior management has reviewed these critical accounting policies and related
disclosures with the Audit Committee of our Board of Directors.

During the first nine months of 2010, there were no significant changes in
our critical accounting policies and estimates. Please refer to Managements Discussion and Analysis of Financial Condition and Results of Operations contained in Part II, Item 7 of our Annual Report on Form 10-K for the year
ended December 31, 2009 for a more complete discussion of our critical accounting policies and estimates.

Results of Operations for
the Three and Nine Months Ended September 30, 2010 and 2009

Revenues

Total revenues for the three and nine months ended September 30, 2010 increased to $11.7 million and $33.7 million, respectively,
compared to $9.2 million and $27.1 million, respectively, for the same periods in 2009 and were comprised of consumables, MassARRAY and other product related sales, contract research services and diagnostic sales. Consumables revenue consists of
sales of our SpectroCHIP bioarray chips used with our iPLEX and other assays. MassARRAY and other product related revenues are derived from sales of MassARRAY systems, maintenance agreements, sales and licensing of our proprietary software and the
receipt of license fees from end-users. Diagnostic revenues are from the testing services of Sequenom CMMs carrier screening test for cystic fibrosis that was launched in the third quarter of 2009, as well as the Rhesus D genotyping test that
was launched in the first quarter of 2010. In August 2010, we announced that Sequenom CMM would no longer offer the
Fetalxysex determination test after September 15,
2010. Diagnostic revenue related to the Fetalxysex
determination test was not significant for the three and nine months ended September 30, 2010.

Consumables revenue for the three and
nine months ended September 30, 2010 increased to $5.7 million and $16.2 million, respectively, compared to $5.4 million and $15.4 million, respectively, for the same periods in 2009. These increases are attributable to our larger installed
base of MassARRAY compact systems in 2010 against the comparative periods in 2009, as well as increased consumables orders from our customers in the biomedical research and agricultural biology markets against the comparative period.

MassARRAY and product related revenues for the three and nine months ended September 30, 2010 were $4.3 million and $14.4 million, respectively, as
compared to $3.7 million and $10.1 million, respectively, for the same periods in 2009. The increases of $0.6 million and $4.3 million for the three and nine months ended September 30, 2010, respectively, as compared to the same periods in
2009, were primarily due to increases in MassARRAY system hardware and software sales of $0.7 million and $3.5 million, respectively, from the comparative periods in 2009 and are attributable to higher system placements in the current year periods.
For the three and nine months ended September 30, 2010, revenue from other product sales, which primarily represents MassARRAY system maintenance contract revenue, was $1.3 million and $3.8 million, respectively, as compared to $1.4 million and
$3.0 million, respectively, for the same periods in 2009. The decrease of $0.1 million for the three months ended September 30, 2010, as compared to the same period in 2009, is attributable to fewer customer services calls against the
comparative period. The increase of $0.8 million for the nine months ended September 30, 2010, is due to more service contracts in effect over our larger installed base against the comparative period.

We recorded contract research services revenue of $1.0 million and $1.8 million, respectively, for the three and nine months ended September 30,
2010, as compared to $0.1 million and $1.6 million, respectively, for the same periods in 2009. The increases of $0.9 million and $0.2 million for the three and nine months ended September 30, 2010, respectively, are attributable to our cost
cutting initiative that commenced in April 2009, which refocused our genetic analysis service business to fewer studies with higher revenue and margins.

We recognized diagnostic revenue of $0.7 million and $1.3 million for the three and nine months ended September 30, 2010 and 2009, respectively, compared to no diagnostic revenue in the comparative
periods as the tests were launched in September 2009 and early 2010. Diagnostic revenue is recognized upon cash collection as payments are received. Diagnostic revenue going forward is uncertain and difficult to predict due to the lack of historical
sales trends associated with our recent commercial launches of these tests.

Research and other revenues, which generally consist of license
and research grant payments, were $0 for the three and nine months ended September 30, 2010, compared to $3,000 and $5,000 for the same periods in 2009, respectively. The timing of research revenues depends upon our expenditures on grant
research and our receipt of grant funding from sponsoring agencies. We expect license and grant revenue to be minimal going forward.



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Our revenues have historically
fluctuated from period to period and likely will continue to fluctuate substantially in the future based upon the unpredictable sales cycle for the MassARRAY system, general economic conditions, revenue recognition criteria, the overall acceptance
and demand for our new and existing commercial products and services, as well as the adoption rates of the cystic fibrosis carrier screening assay, Rhesus D genotyping assay and future assays.

Cost of Consumables and Products, Services and Diagnostic Revenues and Gross Margins

Cost of consumables and products revenues for the three months ended September 30, 2010 and 2009 was $2.8 million and $2.5 million, respectively, which resulted in a gross margin on consumables and
product related sales for these periods of 73% and 73%, respectively. Gross margin was consistent for the three months ended September 30, 2010, as compared to the same period in 2009 due to the mix of products sold. For the three months ended
September 30, 2010, higher system placements during the current period, which historically sell at lower gross margins, were offset by increased consumables sales, which historically sell at higher average gross margins.

Cost of consumables and products revenues for the nine months ended September 30, 2010 and 2009 was $10.5 million and $7.3 million, respectively,
which resulted in a gross margin on consumables and product related sales for these periods of 66% and 71%, respectively. Gross margin was lower for the nine months ended September 30, 2010 due to the increase in the historically lower margin
MassARRAY systems revenue in the current period, as compared to the same period in 2009. This is in contrast to the larger product mix of historically higher margin consumables sales as a percentage of total product and product related sales in the
comparative period in 2009.

Cost of contract research service revenues for the three and nine months ended September 30, 2010 were $0.2
million and $0.5 million, respectively, compared to $0.2 million and $1.9 million, respectively, for the same periods in 2009. Gross margins were 76% and 75% during the current periods, as compared to negative margins in the same periods in the
prior year. The improved margins in 2010 are attributable to our focus on fewer studies and projects with higher revenue and margins after our April 2009 cost cutting initiative. Gross margins on contract research service revenues are dependent on
the particular contract terms of the work undertaken.

Costs of diagnostic revenues are recognized at the completion of testing and were $1.1
million and $2.9 million for the three and nine months ended September 30, 2010, respectively. There were no costs of diagnostic revenues in the comparable periods in 2009 as our tests were launched in September 2009 and early 2010. Gross
margins were negative for the three and nine months ended September 30, 2010, as we build test volumes to cover costs associated with running our diagnostic tests and incur other capacity related expenses. Gross margin on diagnostic tests are
affected by test volumes and overall reimbursement for the amount paid per test.

Our overall gross margin for the three and nine months ended
September 30, 2010 was 65% and 59%, respectively, compared to 71% and 66%, respectively, for the same periods in 2009. These gross margins, as compared to the same periods in 2009, are attributable to the activity described above.

We believe that gross margin in future periods will be affected by, among other things, the selling price for systems and consumables, consumable sales
per MassARRAY system sold, the mix of product sales and the type of services sold, competitive conditions, sales volumes, discounts offered, the percentage of sales made to distributors, as well as the cost of goods sold, inventory reserves and
obsolescence charges required and royalty payment obligations on in-licensed technologies. Our gross margin will also be affected by the adoption rates of the diagnostic tests we commercialize, the payor and other contracts we may enter into for
such tests and the volume of tests sold.

Research and development expenses

Research and development expenses for the three and nine months ended September 30, 2010, increased to $11.3 million and $32.9 million, respectively, compared to $8.5 million and $27.5 million,
respectively, for the same periods in 2009. These expenses consisted primarily of salaries and related personnel expenses, product development costs, and clinical expense related costs.

The increase in research and development expenses of $2.8 million for the three months ended September 30, 2010, as compared to the same period in 2009, was related primarily to increased headcount
and related costs of $0.4 million associated with our corporate bonus plan for 2010, a $0.7 million increase related to clinical costs associated with our trisomies programs, an increase in research and development collaborations costs of $0.7
million, higher depreciation costs of $0.4 million associated with the acquisitions of sequencers to support development activities, an increase in equipment and operating supplies associated with sequencing activities of $0.3 million, a $0.1
million increase in restricted stock compensation expense as a result of a performance based grant to all employees in December 2009 and higher third party consulting costs of $0.3 million related to external validation work associated with our
trisomies activities. These increases were offset by lower share-based compensation charges of $0.1 million.



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The increase in
research and development expenses of $5.4 million for the nine months ended September 30, 2010 compared to the same period in 2009, was related primarily to increased headcount and related costs of $0.9 million associated with our corporate
bonus plan for 2010 and higher temporary labor costs, higher clinical costs of $3.9 million associated with our development programs, an increase of $1.6 million in collaboration costs associated primarily with a February 2010 licensing payment to
Optherion and a collaboration milestone payment made during the third quarter of 2010, a $0.3 million increase in restricted stock compensation expense as a result of a performance based grant to all employees in December 2009 and a $0.4 million
increase in depreciation associated primarily with a larger capital base for our Sequenom CMM laboratory. These increases were offset by a $1.5 million decrease in operating supplies and equipment costs due to the commercialization of Rhesus D
genotyping and Fetalxysex determination in the first
quarter of 2010 and a $0.2 million decrease in share-based compensation charges.

We expect our research and development expenses to remain
higher in 2010 compared to 2009, as we continue to expand our investment in the development of noninvasive prenatal nucleic acid based tests, including a potential Trisomy 21 and other tests and as we continue to invest in new products and
applications for our MassARRAY platform.

Selling and marketing expenses

Selling and marketing expenses for the three and nine months ended September 30, 2010 increased to $6.9 million and $20.4 million, respectively, compared to $5.9 million and $20.2 million,
respectively, for the same periods in 2009. These expenses consisted primarily of salaries and related expenses for sales and marketing, customer support, and business development personnel and their related department expenses.

The increase in selling and marketing expenses of $1.0 million for the three months ended September 30, 2010 compared to the same period in 2009,
was related primarily to increased headcount and related costs of $0.6 million due to our corporate bonus plan for 2010 and the expansion of our contract sales force infrastructure in our molecular diagnostics segment, higher commission payouts of
$0.2 million related to increased revenues in our genetic analysis segment, and increased costs of $0.2 million for logistics expenses associated primarily with postage and freight on sample transportation.

The increase in selling and marketing expenses of $0.2 million for the nine months ended September 30, 2010 compared to the same period in 2009, was
related primarily to increased headcount and related costs of $0.5 million due to our corporate bonus plan for 2010 and the expansion of our contract sales force infrastructure in our molecular diagnostics segment, higher commission payouts of $0.6
million related to increased revenues in our genetic analysis segment and a $0.2 million increase in restricted stock compensation expense as a result of a performance based grant to all employees in December 2009. These increases were offset by
decreases in our advertising and marketing projects associated within the genetic analysis and molecular diagnostics programs of $0.1 million, a reduction in travel expenses of $0.4 million, lower facilities and operating supplies costs of $0.3
million that were both associated with our workforce reduction in April 2009 and lower share-based compensation charges of $0.3 million.

We
expect our sales and marketing expenses to remain consistent in 2010 compared to 2009, as we maintain our sales force for the genetic analysis segment, make adjustments to our molecular diagnostic sales force, while increasing our marketing and
commercial development teams for our molecular diagnostic tests.

General and administrative expenses

General and administrative expenses for the three and nine months ended September 30, 2010 decreased to $5.3 million and $16.6 million, respectively,
compared to $6.7 million and $21.9 million, respectively, for the same periods in 2009. These expenses consisted primarily of salaries and related expenses for legal, finance and human resource personnel, and their related department expenses.



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The decrease in general and
administrative expenses of $1.4 million for the three months ended September 30, 2010 from the same period in 2009, was related primarily to a decrease in legal fees of $0.8 million, lower share-based compensation expense of $0.4 million, lower
facilities and related costs of $0.2 million and an increase in the allocation of IT and other general and administrative expenses to other functional departments of $0.9 million. These decreases were offset by higher depreciation of $0.1 million
associated with the implementation of a new enterprise resource planning system that went live in the fourth quarter of 2009, higher headcount and related costs of $0.3 million associated with our corporate bonus plan for 2010, an increase in
general IT department expenses of $0.3 million related to higher hardware, software and maintenance costs, and a $0.2 million increase in restricted stock compensation expense as a result of a performance based grant to all employees in December
2009.

The decrease in general and administrative expenses of $5.3 million for the nine months ended September 30, 2010 from the same
period in 2009, was related primarily to a $2.1 million decrease in legal fees, lower share-based compensation expense of $1.0 million, a $0.1 million decrease in travel expenses, a reduction in investor relations and consulting fees of $0.4
million, a $0.3 million decrease in accounting and tax expenses, lower facilities and related costs of $0.9 million and an increase in the allocation of IT and other general and administrative expenses to other functional departments of $1.4
million. These decreases were offset by an increase in restricted stock compensation expense of $0.5 million as a result of a performance based grant to all employees in December 2009 and higher depreciation of $0.4 million associated with the
implementation of a new enterprise resource planning system that went live in the fourth quarter of 2009.

We expect general and
administrative costs to increase in the fourth quarter of 2010 compared to 2009, due to legal costs related to the ongoing investigations, litigation and potential litigation because our available insurance policy limits have been exhausted and
based on our indemnification obligations to our former officers and employees.

Litigation settlement expense, net

Litigation settlement expense, net was $7.0 million and $48.8 million for the three and nine months ended September 30, 2010, respectively, compared
to none in the same periods in 2009.

In connection with the court approved settlement of In re Sequenom, Inc. Securities Litigationin
May 2010, we recorded a charge of $7.0 million related to the revaluation of the approximately 6.4 million common stock remaining to be issued to the members of the plaintiffs class to a fair value of $7.01 per share as of
September 30, 2010. During the second quarter of 2010, we initially recorded a charge of approximately $42.8 million related to the original share settlement of approximately 6.8 million shares, offset by a recognized aggregate gain of
approximately $2.5 million due to the revaluation to fair value for the portion of the approved share settlement issued to plaintiffs counsel and the revaluation to fair value for the remaining shares issuable to the members of the
plaintiffs class as of June 30, 2010. Subsequent additional adjustments to the equity based portion of the settlement will be recorded as a gain or loss, depending upon fluctuations in the fair market value of our common stock until the
remaining approximately 6.4 million shares are issued.

Additionally, in connection with the entry of a stipulation of settlement in
connection with In re Sequenom, Inc. Derivative Litigation in May 2010, we recorded a litigation settlement charge of $1.5 million during the second quarter of 2010. This charge represented the portion of the settlement not covered by
insurance proceeds. In connection with the final approval of the settlement on July 26, 2010, we remitted a cash payment of $338,000 and issued 200,000 shares of our common stock at a fair value of $5.81 per share during the three months ended
September 30, 2010.

Restructuring expense

Restructuring expense for the three and nine months ended September 30, 2010 was $0, compared to $0.5 million and $1.5 million, respectively, in the same periods in 2009. The restructuring expense
was due to our April 2009 reduction in our genetic analysis workforce, two office closures and other related costs.

Interest income, net

Interest income, net, was $58,000 and $103,000 for the three and nine months ended September 30, 2010, respectively, as compared to
$78,000 and $0.4 million, respectively, for the same periods in 2009. The decreases are attributable to the overall reduction in the rates of return in our investment portfolios and lower cash, cash equivalents and marketable securities balances in
the first quarter of 2010, as compared to the same period in 2009.

Gain (loss) on the sale of marketable securities

Gain on marketable securities was $0 and $111,000 for the three and nine months ended September 30, 2010, respectively, as compared to $0 and a loss
of ($38,000), respectively, for the comparable periods in 2009. The gain for the nine months ended September 30, 2010, was primarily associated with the sale of an auction rate security, or ARS during the first quarter of 2010 that was
previously written down to zero. The recognized loss for the nine months ended September 30, 2009, was due to an other-than-temporary impairment of one of our ARS.



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Other income (expense), net

Other income (expense), net, was income, net, of $166,000 for the three months ended September 30, 2010 and an expense, net, of
($47,000) for the nine months ended September 30, 2010, as compared to other income, net, of $0.2 million and $0.4 million for the comparable periods in 2009. The decreases for the three and nine months ended September 30, 2010, as
compared to the same periods in 2009, was primarily due to higher interest expense associated with the acquisition of SensiGen in February 2009 and our capital lease, which we signed in the second quarter of 2009, offset by favorable realized
foreign currency translations and other income items.

Liquidity and Capital Resources

As of September 30, 2010, cash, cash equivalents and current marketable securities totaled $55.8 million, compared to $42.7 million at
December 31, 2009. Our cash equivalents and current marketable securities are held in U.S. Government securities with ratings of AAA and repurchase agreements collateralized by U.S. Government securities with ratings of AAA. As of
September 30, 2010 and December 31, 2009, we have ARS with an estimated fair value of $0 million and $0.5 million, respectively. These estimated fair values reflect a $2.0 million and $3.8 million adjustment to the principal value of $2.0
million and $4.3 million as of September 30, 2010 and December 31, 2009, respectively. Additional discussion with respect to the risks and uncertainties associated with our ARS is included in the Risk Factors in Item 1A of
this report, in Quantitative and Qualitative Disclosures about Market Risk in Item 3 of this report and in the notes to our condensed consolidated financial statements included elsewhere in this report.

We have a history of recurring losses from operations and have an accumulated deficit of $696.1 million as of September 30, 2010. Our capital
requirements to sustain operations, including research and development projects, have been and will continue to be significant. As of September 30, 2010, we had working capital of $9.6 million.

We consider the material drivers of our cash flow to be sales volumes, working capital, inventory management and operating expenses. Our principal
sources of liquidity are our cash, cash equivalents and marketable securities. Cash used in operations for the nine months ended September 30, 2010, was $31.3 million, as compared to $39.1 million for the same period in 2009. The use of cash
was primarily a result of the net loss of $98.8 million for the nine months ended September 30, 2010, adjusted for non-cash related items of $48.5 million related to the litigation settlement accruals, net of revaluation adjustments,
depreciation and amortization of $4.1 million, share-based compensation of $7.7 million, compensation charges related to restricted stock of $1.0 million, an increase to our bad debt reserve primarily related to a system sale of $0.7 million and
other non-cash items of $0.2 million, which were offset by the non-cash item related to deferred rent of $0.5 million. The changes in our operating assets and liabilities primarily consisted of higher prepaid expenses and other assets, as well as
lower other liabilities that resulted in cash usages of $0.4 million and $0.4 million, respectively. These changes in operating assets and liabilities were offset by our continuing efforts to maximize working capital, which resulted in lower
accounts receivable and inventory balances that provided cash of $2.0 million and $1.6 million, respectively, as well as increased accounts payable and accrued expense balances that provided cash of $2.3 million. Additionally, an increase in our
deferred revenue balance primarily associated with an increase in the sale of maintenance contracts as compared to the same period in 2009, resulted in a cash provision of $0.8 million.

Net cash used in investing activities was $7.4 million for the nine months ended September 30, 2010, which was primarily attributable to the net change in our marketable securities that used cash of
$4.1 million and purchases of capital equipment that used cash of $3.3 million. This is compared to cash used in investing activities in the comparative period in 2009 of $9.0 million, which consisted of purchases of capital equipment that used $6.9
million and cash used in the acquisition of SensiGen of $2.0 million.

Net cash provided by financing activities was $47.8 million compared to
cash used of $0.1 million for the nine months ended September 30, 2010 and 2009, respectively. Financing activities during the nine months ended September 30, 2010, included the receipt of proceeds from the exercise of stock options and
employee stock purchase plan purchases during the period of $1.0 million and net proceeds from the private placement of our common stock of $47.8 million, offset by cash used for repayments on our debt and capital lease obligation of $1.0 million.
This activity is compared to cash provided from the exercise of stock options and employee stock purchase plan purchases of $1.2 million, offset by repayments on our debt and capital lease obligation of $1.3 million for the nine months ended
September 30, 2009.

Long-term debt obligations include the associated interest payable on these borrowings. Other commitments and
contingencies that may result in contractual obligations to pay are described in the notes to our condensed consolidated financial statements included elsewhere in this report.



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We believe our cash, cash equivalents
and current marketable securities will be sufficient to fund our operating expenses and capital requirements through the second quarter of 2011. We will require additional financing to fund our planned operations. The actual amount of funds that we
will need will be determined by many factors, some of which are beyond our control. These factors include but are not limited to:



| |  |  | the size of future operating losses;
| | - |  | ------------------------------------



| |  |  | our success and our distributors success in selling our MassARRAY products and services;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | Sequenom CMMs success in selling its cystic fibrosis carrier screening and Rhesus D genotyping tests and the level of reimbursement it receives
and its collections for those tests;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the terms and conditions of sales contracts, including extended payment terms;
| | - |  | ------------------------------------------------------------------------------



| |  |  | our ability to introduce and sell new MassARRAY products and services, including the MassARRAY Analyzer 4, which we launched in April 2010;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the level of our selling, general and administrative expenses;
| | - |  | --------------------------------------------------------------



| |  |  | our success and the extent of our investment in the research, development and commercialization of diagnostic technology, including genetic analysis
technology, molecular diagnostics and noninvasive prenatal diagnostic technology;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our success in obtaining sufficient quantities and quality of patient samples;
| | - |  | ------------------------------------------------------------------------------



| |  |  | our success in obtaining worldwide regulatory approval of our products;
| | - |  | -----------------------------------------------------------------------



| |  |  | our success in validating our diagnostic tests and the levels of sensitivity and specificity achieved;
| | - |  | ------------------------------------------------------------------------------------------------------



| |  |  | our success either alone or in collaboration with our partners in launching and selling additional diagnostic products or services;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------



| |  |  | our success and the extent of our investment in the research and development of MassARRAY products and services;
| | - |  | ----------------------------------------------------------------------------------------------------------------



| |  |  | the extent to which we enter into, maintain, and derive revenues from licensing agreements, including agreements to out-license our noninvasive
prenatal analysis technology, research and other collaborations, joint ventures and other business arrangements;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the amount of our legal expenses and settlement payments and any fines or damages arising out of the matters that were the subject of an investigation
by a special committee of our board of directors in 2009, including such amounts associated with the ongoing investigations by the SEC, the Office of the U.S. Attorney for the Southern District of California and the FBI, and the claims asserted by
TrovaGene (formerly Xenomics), none of which are currently covered by insurance;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the amount of any legal expenses, settlement payments, fines or damages arising from any future investigation or litigation and the extent to which any
of the foregoing is covered by insurance;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the dilution from any issuance of securities, whether in connection with future capital-raising or acquisition transactions, the settlement of
litigation, including the pending issuance of shares in connection with the settlement of the consolidated securities class actions, or otherwise;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the extent to which we acquire, and our success in integrating, technologies or companies;
| | - |  | ------------------------------------------------------------------------------------------



| |  |  | the level of our expenses associated with the audit of our consolidated financial statements as well as compliance with other corporate governance and
regulatory developments or initiatives;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | regulatory changes by the FDA and other worldwide regulatory authorities; and
| | - |  | -----------------------------------------------------------------------------



| |  |  | technological developments in our markets.
| | - |  | ------------------------------------------

At September 30, 2010, we had outstanding stand-by letters of credit with financial institutions totaling $1.5 million related to our building, operating leases and customer guarantees. The
letter of credit related to our Newton, Massachusetts building lease agreement will remain in place until its expiration in December 2010.



|Item 3. | Quantitative and Qualitative Disclosures About Market Risk
|------- | ----------------------------------------------------------

Marketable Securities and Fair Value Measurements

The primary objective of our investment
activities is to preserve principal while at the same time maximizing the income we receive from our investments without significantly increasing risk. Some of the securities that we invest in may have market risk. This means that a change in
prevailing interest rates may cause the fair value of the principal amount of the investment to fluctuate. For example, if we hold a security that was issued with a fixed interest rate at the then-prevailing rate and



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interest rates later rise, the fair value of the principal amount of our investment will probably decline. To minimize this risk our current investment policy requires us to maintain our
portfolio of cash equivalents and marketable securities in a variety of securities that are represented by issuances from the U.S. Government, repurchase agreements collateralized by U.S. Government securities that have ratings of AAA or are fully
guaranteed by the U.S. Government. Our investment policy also includes a minimum quality rating for all new investments and the overall amount that may be invested with a single security. If an investment we hold falls below this level, we research
the reasons for the fall and determine if we should continue to hold the investment in order to minimize our exposure to market risk of the investment.

The appropriate classification of marketable securities is determined at the time of purchase and reevaluated as of each balance sheet date. Based on this determination, as of September 30, 2010 and
December 31, 2009, all of our investments in marketable securities were classified as available for sale and were reported at fair value. We measure fair value based on the prices that would be received to sell an asset or paid to transfer a
liability in an orderly transaction between market participants at the measurement date. Fair value is determined based on observable market quotes or valuation models using assessments of counterparty credit worthiness, credit default risk or
underlying security and overall capital market liquidity. Declines in fair value that are considered other-than-temporary are charged to operations and those that are considered temporary are reported as a component of accumulated other
comprehensive income in stockholders equity. We use the specific identification method of determining the cost basis in computing realized and unrealized gains and losses on the sale of our available-for-sale securities.

At September 30, 2010 and December 31, 2009, we had $2.0 million and $4.3 million, respectively, of principal invested in ARS and have an
estimated fair value of $0 and $0.5 million, respectively. Consistent with our investment policy guidelines in effect when originally purchased, these ARS investments had AAA/AA credit ratings at the time of purchase. Our remaining ARS as of
September 30, 2010, is a private placement security with a long-term nominal maturity in 2028 and with an interest rate that resets through a Dutch auction each month and represents an interest in collateralized debt obligations supported by
insurance securitizations. With the liquidity issues experienced in global credit and capital markets our remaining ARS has experienced multiple failed auctions as the amount of securities submitted for sale has exceeded the amount of purchase
orders and we have been unable to liquidate these securities. As a result, our ARS has an estimated fair value as of September 30, 2010 of $0.

During the first quarter of 2010, we sold two ARS investments with an aggregate principal value of $2.3 million, but an estimated fair value of $0.5 million. These sales resulted in a gain on the sale of
approximately $0.1 million. For the three months ended September 30, 2010, no other-than-temporary impairment losses were charged to operations and there are no accumulated unrealized losses in other comprehensive income related to our
investments in ARS.

Since there is a lack of observable market quotes on our investment portfolio of marketable securities in ARS, we utilize
valuation models including those that are based on expected cash flow streams and collateral values, including assessments of counterparty credit quality, default risk underlying the security, discount rates, overall capital market liquidity and our
overall intent and ability to liquidate our ARS. The valuation of our investment portfolio is subject to uncertainties that are difficult to predict. Factors that may impact our valuation include changes to credit ratings of the securities as well
as to the underlying assets supporting those securities, rates of default of the underlying assets, underlying collateral value, discount rates, counterparty risk and ongoing strength and quality of market credit and liquidity. In the event we need
to access the ARS investments that are in an illiquid state, we will not be able to do so without the possible loss of principal, until a future auction for these investments is successful or they are redeemed by the issuer or they mature.

Foreign currency rate fluctuations

We have foreign operations whose functional currencies are the Great British Pound (GBP), the Japanese Yen (Yen), the Indian Rupee (INR), the Australian Dollar (AUD) and the Euro (EUR). The
subsidiaries accounts are translated from the relevant functional currency to the United States Dollar (USD) using the current exchange rate in effect at the balance sheet date, for balance sheet accounts, and using the average exchange rate
during the period for revenues and expense accounts. The effects of translation are recorded as a separate component of stockholders equity. Our subsidiaries conduct their business with customers in local currencies. Additionally, we
occasionally invoice Australian customers in their local currency. Exchange gains and losses arising from these transactions are recorded using the actual exchange differences on the date of the transaction. We have not taken any action to reduce
our exposure to changes in foreign currency exchange rates, such as options or futures contracts, with respect to transactions with our subsidiaries or transactions with our customers where the invoicing currency is not the USD.



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The table below sets forth our
currency exposure (i.e., those transactional exposures that give rise to the net currency gains and losses recognized in the income and expenditure account) on our net monetary assets and liabilities. These exposures consist of our monetary assets
and liabilities that are not denominated in the functional currency used by us or our subsidiary having the asset or liability.



|                                  |     |                                                                   |     |     |  |   |     | 
|--------------------------------- | --- | ----------------------------------------------------------------- | --- | --- |  | - | --- | 
|Functional currency of operations |     | As of September 30, 2010Net foreign monetary assets/(liabilities) |    
|                                  | AUD |                                                                   |     | EUR | 
|                                  |     | ($ in millions)                                                   |    
|USD                               |     | $                                                                 | 0.6 |     |  | $ | 1.8 | 

A movement of 10% in the USD to AUD
exchange rate would create an unrealized gain or loss of approximately $56,000. A movement of 10% in the USD dollar to EUR exchange rate would create an unrealized gain or loss of approximately $180,000.

We had no off balance sheet, or unrecognized, gains and losses in respect of financial instruments used as hedges at the beginning or end of the three
month period ended September 30, 2010. We had no deferred gains or losses during the period covered.

Inflation

We do not believe that inflation has had a material adverse impact on our business or operating results during the periods presented.



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|Item 4. | Controls and Procedures
|------- | -----------------------

On
April 29, 2009, we announced that the expected launch of our noninvasive prenatal test for Trisomy 21 had been delayed and that we were no longer relying on our previously announced test data and results for that test. We also announced that
our board of directors had formed a special committee of independent directors to oversee an independent investigation and that the committee had engaged independent counsel to assist the committee in the conduct of the investigation. The
investigation was completed in September 2009. Based on the special committees work and recommendations, the independent members of our board of directors concluded that as a result of our attempted transition from researching potential
molecular diagnostic tests to developing and commercializing those tests, we failed to put in place adequate protocols and controls for the conduct of studies in the Trisomy 21 program at our company. Certain employees also failed to provide
adequate supervision. In the absence of such protocols, controls and supervision, the test data and results in our Trisomy 21 program included inadequately substantiated claims, inconsistencies and errors. Due to deficiencies in our disclosure
controls and procedures, in a number of instances such test data and results were reported to the public in our press releases and other public statements.

At the recommendation of the special committee, in 2009 our board of directors began implementing, among other things, new disclosure controls and procedures. Our enhanced disclosure controls and
procedures have been designed to provide reasonable assurance that we record, process, summarize, and report information we are required to disclose in our periodic reports filed with the SEC in the manner and within the time periods specified in
the SECs rules and forms. Our new enhanced disclosure controls and procedures are also designed to provide reasonable assurance that the information is accumulated and communicated to our management, including the principal executive officer
and the principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

Our management does not expect
that our enhanced disclosure controls or our internal controls will prevent all errors and all fraud. A control system, no matter how well conceived, implemented and operated, can provide only reasonable, not absolute, assurance that the objectives
of the control system are met. The design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control
systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty, and that
breakdowns can occur because of a simple error or mistake. Controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the control. The design of any system of controls also
is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Over time, controls may become
inadequate because of changes in conditions, or the degree of compliance with the policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not
be detected.

As required by Rule 13a-15(b) under the Exchange Act, we 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 of September 30, 2010. Based on the
foregoing, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective as of September 30, 2010 to provide reasonable assurance that (a) the information required to
be disclosed by us in the reports that we file or submit under the 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 officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

Further, management determined that as of September 30, 2010, there were no changes in internal control over financial reporting that occurred
during the three months ended September 30, 2010 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.



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PART II
 OTHER INFORMATION



|Item 1. | Legal Proceedings
|------- | -----------------

In November 2001, we
and certain of our current or former officers and directors were named as defendants in a class action shareholder complaint filed by Collegeware USA in the U.S. District Court for the Southern District of New York (now captioned In re Sequenom,
Inc. IPO Securities Litigation) Case No. 01-CV-10831. In the complaint, the plaintiffs allege that our underwriters, certain of our officers and directors and we violated the federal securities laws because our
registration statement and prospectus contained untrue statements of material fact or omitted material facts regarding the compensation to be received by and the stock allocation practices of the underwriters. The plaintiffs seek unspecified
monetary damages and other relief. Similar complaints were filed in the same District Court against hundreds of other public companies that conducted initial public offerings of their common stock in the late 1990s and 2000 (the IPO Cases).

In October 2002, our officers and directors were dismissed without prejudice pursuant to a stipulated dismissal and tolling agreement
with the plaintiffs. In February 2003, the District Court dismissed the claim against us brought under Section 10(b) of the Exchange Act, without giving the plaintiffs leave to amend the complaint with respect to that claim. The District
Court declined to dismiss the claim against us brought under Section 11 of the Securities Act of 1933, as amended (the Securities Act).

In September 2003, pursuant to the authorization of a special litigation committee of our board of directors, we approved in principle a settlement offer by the plaintiffs. In September 2004, we entered
into a settlement agreement with the plaintiffs. In February 2005, the District Court issued a decision certifying a class action for settlement purposes and granting preliminary approval of the settlement subject to modification of certain bar
orders contemplated by the settlement. In August 2005, the District Court reaffirmed class certification and preliminary approval of the modified settlement. In December 2006, the U.S. Court of Appeals for the Second Circuit vacated the District
Courts decision certifying as class actions the six lawsuits designated as focus cases. Thereafter the District Court ordered a stay of all proceedings in all of the lawsuits pending the outcome of plaintiffs petition to
the Second Circuit for rehearing en banc. In April 2007, the Second Circuit denied plaintiffs rehearing petition, but clarified that the plaintiffs may seek to certify a more limited class in the District Court. Accordingly, the
settlement as originally negotiated was terminated pursuant to stipulation and will not receive final approval.

In February 2009, liaison
counsel for plaintiffs informed the District Court that a new settlement of all IPO Cases had been agreed to in principle, subject to formal approval by the parties and preliminary and final approval by the District Court. In April 2009, the parties
submitted a tentative settlement agreement to the District Court and moved for preliminary approval thereof. In June 2009, the District Court granted preliminary approval of the tentative settlement and ordered that notice of the settlement be
published and mailed to class members. In September 2009, the District Court held a final fairness hearing. In October 2009, the District Court certified the settlement class in each IPO Case and granted final approval to the settlement. Thereafter,
three shareholders filed a Petition for Permission to Appeal Class Certification Order, asserting that the District Courts certification of the settlement classes violates the Second Circuits earlier class certification decisions in the
IPO Cases and a number of shareholders also filed direct appeals, objecting to final approval of the settlement. If the settlement is affirmed on appeal, the settlement will become effective and will result in the dismissal of all claims against us
and our officers and directors with prejudice, and our pro rata share of the settlement fund will be fully funded by insurance.

In April
2009, we announced that the expected launch of our test for Trisomy 21 had been delayed and that we were no longer relying on our previously announced test data and results for that test, as a result of inadequately substantiated claims,
inconsistencies and errors and inadequate protocols and controls, which included: the mischaracterization of tests as having been conducted in a blinded manner (i.e., that the tests had been performed by scientists who did not know the true
outcomes for the samples tested before the test results had been determined); the improper unblinding of true outcomes for samples being tested; the use of the unblinded true outcomes to alter and improve reported test results; the unsubstantiated
reporting of test results for low-risk samples (i.e., samples from expectant mothers who were less likely to be carrying a fetus with Trisomy 21) without knowing the true outcomes for such samples; the failure to perform testing on those
low-risk samples; the inadequate storage of serum samples resulting in breakdown of nucleic acids; and other improper practices. Following the April 2009 announcement, several complaints were filed in the U.S. District Court for the Southern
District of California against us and certain of our current and former officers and directors on behalf of certain purchasers of our common stock. The complaints included claims asserted under Sections 10 and 20(a) of the Exchange Act and Sections
11 and 12(a)(2) of the Securities Act and were brought as shareholder class actions. In general, the complaints alleged that we and certain of our officers and directors violated federal securities laws by making materially false and misleading
statements regarding our Trisomy 21 test under development, thereby artificially inflating the price of our common stock. In September 2009 the complaints were consolidated under the caption In re Sequenom, Inc. Securities Litigation, Master
File No. 3:09-cv-00921 LAB-WMC and a lead plaintiff was appointed. In December 2009 we entered into a stipulation of settlement with the lead plaintiff on behalf of the plaintiffs class. Pursuant to the terms of the stipulation, we agreed
to pay $14 million, which has been funded by insurance proceeds. We also agreed to issue to the plaintiffs class approximately 6.8 million shares of our



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common stock, and to adopt or continue our implementation of changes and additions to certain corporate governance policies, protocols and practices. The court held a final settlement approval
hearing on May 3, 2010, following which the court approved the final settlement. The time for appeals lapsed without any appeal. We have approximately $44.9 million in accrued litigation settlement related to this matter as of
September 30, 2010 (see Note 4).

In May 2009, a shareholder derivative complaint was filed in the Superior Court of California for
the County of San Diego against certain of our current and former directors and officers. Thereafter, a number of similar actions, also styled as shareholder derivative suits, were filed in state court and were consolidated in a single court. In
July 2009 the first of three shareholder derivative suits were filed in the U.S. District Court for the Southern District of California. The federal shareholder derivative actions were consolidated before a single court under the caption In re
Sequenom, Inc. Derivative Litigation, S.D. Cal. Case No. 09-CV-1341 LAB (WMc) and plaintiffs filed a single consolidated complaint. A separate federal derivative compliant, Ries, et al. v. Stylli, et al, case no. 09-CV-2517 LAB
(WMc), was filed thereafter and it was coordinated with the consolidated federal derivative action. The state and federal shareholder derivative actions are hereinafter collectively referred to as the Derivative Actions. The complaints
in the Derivative Actions allege breaches of fiduciary duties by the defendants and other violations of law. In general, the complaints allege that our directors and certain of our officers caused or allowed for the dissemination of materially false
and misleading statements regarding our Trisomy 21 test then under development, thereby artificially inflating the price of our common stock. In May 2010, we entered into a stipulation of settlement to resolve the Derivative Actions. The
current and former directors and officers named as individual defendants in the Derivative Actions also entered into the stipulation of settlement. In exchange for a release of all claims by the plaintiffs and a dismissal of the Derivative Actions,
we agreed (i) to adopt or continue certain corporate governance measures and (ii) to pay the plaintiffs attorneys a total of $2.5 million, of which $1.0 million has been funded by insurance proceeds. The U.S. District Court issued
its final approval of the settlement in accordance with the terms of the stipulation of settlement on July 26, 2010, and the court entered an order dismissing the federal shareholder derivative actions on July 27, 2010. In accordance with
the terms of the stipulation of settlement, the parties in the state shareholder derivative actions filed a joint stipulation to dismiss the actions with prejudice in San Diego Superior Court on July 27, 2010. In connection with the final
approval of settlement on July 26, 2010, we remitted a cash payment of $338,000 and issued 200,000 shares of our common stock at a fair value of $5.81 per share in payment of the portion of the plaintiffs attorneys fees not funded
by insurance proceeds during the third quarter of 2010.

In June 2009, we received written notification that the Enforcement staff of the
SEC has initiated an investigation following our April 2009 announcement regarding our Trisomy 21 test then under development. As part of this investigation, the SEC staff has also required us to produce information with respect to our
announcement relating to our offer to acquire EXACT Sciences, Inc. in January 2009. We intend to continue to cooperate fully with the SEC in this matter.

In June 2010, the SEC filed a complaint against Elizabeth Dragon, who was formerly our Senior Vice President, Research and Development. The complaint alleged that between June 2008 and January 2009
Dr. Dragon made or allowed for the dissemination of materially false and misleading statements regarding our Trisomy 21 test then under development, thereby inflating the price of our stock. The SEC sought a permanent injunction against any
future violations of the federal securities laws by Dr. Dragon, civil penalties, and imposition of an officer and director bar against her. On the same day, Dr. Dragon filed a consent to judgment of permanent injunction and other relief.
In the consent to judgment, Dr. Dragon, without admitting or denying the allegations in the SECs complaint, agreed to the permanent injunction against future violations of federal securities laws, the director and officer bar, and civil
penalties to be determined by the court.

Following our September 2009 announcement regarding the work and recommendations of a special
committee of independent directors after it had completed its independent investigation of activity related to the Trisomy 21 test, representatives of the Office of the U.S. Attorney for the Southern District of California contacted us to inquire
about the announcement. We intend to continue to cooperate fully with the U.S. Attorney and the Federal Bureau of Investigation (FBI) in this matter.

In June 2010, the U.S. Attorney filed a criminal information against Dr. Dragon. The criminal information charged Dr. Dragon with one count of conspiracy to commit securities fraud by
conspiring to disseminate materially false and misleading statements regarding our Trisomy 21 test then under development. On the same day, Dr. Dragon pled guilty to the criminal information, and the magistrate judge assigned to this matter
recommended that the district court judge accept Dr. Dragons guilty plea. The U.S. District Court has not yet sentenced Dr. Dragon.

Following our September 2009 announcement, representatives of NASDAQ also contacted us to inquire about the announcement. We intend to continue to cooperate fully with NASDAQ in this matter in the event
that NASDAQ has any further inquiries.

In October 2009, plaintiff Xenomics, Inc. (now known as TrovaGene) filed a complaint in the Supreme
Court of the State of New York naming us as the defendant. In the complaint, the plaintiff alleged that due to materially false and misleading



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statements regarding our Trisomy 21 test under development, we had breached the license agreement entered into by the parties on October 29, 2008, which provides us with exclusively licensed
patent rights for the use of fetal nucleic acids obtained from maternal urine, and that the plaintiff has suffered damages as a result. The plaintiff sought equitable relief and $300 million in damages. In December 2009, we removed the case to the
U.S. District Court for the Southern District of New York. In May 2010, the district court granted our motion to dismiss the action because the license agreement specifically provides that if TrovaGene seeks to resolve a dispute arising
under the agreement, it must do so by commencing an arbitration in San Diego. As of the date of this report, TrovaGene has not commenced arbitration proceedings in San Diego.

On August 26, 2010, Paul Hawran, our former chief financial officer, sued the three directors who comprised the special committee that conducted the investigation of activity related to the Trisomy
21 test, alleging that they had defamed him, invaded his privacy, negligently and intentionally interfered with his prospective economic advantage, and committed unfair business practices under California Business and Professions Code
Section 17200. Mr. Hawran alleged in his complaint that he was asked to resign because he had raised concerns about the conduct of certain of our directors. The lawsuit, Hawran v. Hixson et al, case no. 37-2010-00058632-CU-DF-NC, was filed
in the Superior Court of California for the North County of San Diego. On September 24, 2010, we were served with an amended complaint in this lawsuit, in which Mr. Hawran named us as a defendant in addition to the three individuals
previously named and added claims of breach of contract and intentional and negligent misrepresentation. The individual defendants and we intend to vigorously defend ourselves against the claims advanced. On October 6, 2010, the defendants
filed a motion to strike the complaint under California Code of Civil Procedure Section 425.16 on the grounds that Mr. Hawrans claims arise from acts in furtherance of the defendants right of petition or free speech under the
United States or California Constitution in connection with a public issue. On October 12, 2010, the defendants filed a demurrer to each and every cause of action in the complaint. A hearing on both the motion to strike and the demurrer has
been set for December 10, 2010.

In addition, from time to time, we may be involved in litigation relating to claims arising out of our
operations in the normal course of business.

Because of the uncertainties related to the incurrence, amount and range of loss on any pending
litigation, investigation, inquiry or claim, management is currently unable to predict the ultimate outcome of any litigation, investigation, inquiry or claim, determine whether a liability has been incurred or make an estimate of the reasonably
possible liability that could result from an unfavorable outcome. An adverse ruling or outcome in any lawsuit involving us could materially affect our business, liquidity, consolidated financial position or results of operations ability to sell one
or more of our products or could result in additional competition. In view of the unpredictable nature of such matters, we cannot provide any assurances regarding the outcome of any litigation, investigation, inquiry or claim to which we are a party
or the impact on us of an adverse ruling of such matters.



|Item 1A. | Risk Factors
|-------- | ------------

Before deciding to invest
in us or deciding to maintain or increase your investment, you should carefully consider the risks described below, in addition to the other information contained in this report and in our other filings with the SEC. The risks and uncertainties
described below and in our other filings are not the only ones facing us. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also affect our business. If any of these known or unknown risks or
uncertainties actually occurs, our business, financial condition and results of operations could be seriously harmed. In that event, the market price for our common stock could decline and you may lose your investment. The risk factors in this
report have been revised to incorporate changes to our risk factors from those included in our annual report on Form 10-K for the year ended December 31, 2009. The risk factors set forth below with an asterisk (*) next to the title are new
risk factors or risk factors containing changes, including any material changes, from the risk factors previously disclosed in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2009, as filed with the SEC.

*If we fail to obtain the capital necessary to fund our operations, our financial results, financial condition and our ability to
continue as a going concern will be adversely affected and we will have to delay or terminate some or all of our product development programs.

We expect to continue to incur losses for the foreseeable future and will have to raise substantial cash to fund our planned operations.

Our cash, cash equivalents and current marketable securities were $55.8 million as of September 30, 2010. Our announced plans for research and development activities to expand our diagnostic test
menu can only be implemented if we are successful in raising significant funds. In addition, there can be no assurances that our research and development activities will be successful. We need to collect a large number of patient samples in a timely
manner in order to execute our molecular diagnostic research and development activities. If we do not make sufficient research and development progress, this could adversely impact our ability to raise significant additional funds, which could
adversely impact our ability to continue as a going concern. The actual amount of funds that we will need and the timing of any such investment will be determined by many factors, some of which are beyond our control.



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In May 2010, we issued and sold
12,435,000 shares of our common stock at a price of $4.15 per share to certain investors in a private placement that raised net proceeds of approximately $47.8 million. In addition to the capital we raised in May 2010, we anticipate that we will
need to raise additional funds in the future for the continued development and commercialization of our molecular diagnostic technology. We will need to sell equity or debt securities to raise significant additional funds. On September 21,
2010, we filed a shelf registration statement with the SEC providing for the sale by us of up to $150 million of our equity and debt securities from time to time in one or more transactions. This registration statement was declared effective by
the SEC on October 5, 2010. The shelf registration is intended to provide us with the flexibility to take advantage of potential financing opportunities when and if deemed appropriate by our management. However, it may be difficult for us to
raise additional capital through the sale of equity or debt securities. The sale of additional securities will likely result in dilution to our stockholders. Additional financing may not be available in amounts or on terms satisfactory to us or at
all. We may be unable to raise additional funds due to a variety of factors, including our financial condition, the status of our research and development programs, the status of ongoing litigation and pending governmental investigations and the
general condition of the financial markets. If we fail to raise additional funds, we will have to delay or terminate some or all of our research and development programs, our financial condition and operating results will be adversely affected and
we may have to cease our operations.

The amount of additional funds we will need depends on many factors, including:



| |  |  | the size of our future operating losses;
| | - |  | ----------------------------------------



| |  |  | our success and our distributors success in selling our MassARRAY products and services;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | Sequenom CMMs success in selling its cystic fibrosis carrier screening and Rhesus D genotyping tests and the level of reimbursement it receives
and its collections for those tests;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the terms and conditions of sales contracts, including extended payment terms;
| | - |  | ------------------------------------------------------------------------------



| |  |  | our ability to introduce and sell new MassARRAY products and services, including the MassARRAY Analyzer 4, which we launched in April 2010;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the level of our selling, general and administrative expenses;
| | - |  | --------------------------------------------------------------



| |  |  | our success and the extent of our investment in the research, development and commercialization of diagnostic technology, including genetic analysis
technology, molecular diagnostics and noninvasive prenatal diagnostic technology;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our success in obtaining sufficient quantities and quality of patient samples;
| | - |  | ------------------------------------------------------------------------------



| |  |  | our success in obtaining worldwide regulatory approval of our products;
| | - |  | -----------------------------------------------------------------------



| |  |  | our success in validating our diagnostic tests and the levels of sensitivity and specificity achieved;
| | - |  | ------------------------------------------------------------------------------------------------------



| |  |  | our success either alone or in collaboration with our partners in launching and selling additional diagnostic products or services;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------



| |  |  | our success and the extent of our investment in the research and development of MassARRAY products and services;
| | - |  | ----------------------------------------------------------------------------------------------------------------



| |  |  | the extent to which we enter into, maintain, and derive revenues from licensing agreements, including agreements to out-license our noninvasive
prenatal analysis technology, research and other collaborations, joint ventures and other business arrangements;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the amount of our legal expenses and settlement payments and any fines or damages arising out of the matters that were the subject of an investigation
by a special committee of our board of directors in 2009, including such amounts associated with the ongoing investigations by the SEC, the Office of the U.S. Attorney for the Southern District of California and the FBI, and the claims asserted by
TrovaGene (formerly Xenomics), none of which are currently covered by insurance;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the amount of any legal expenses, settlement payments, fines or damages arising from any future investigation or litigation and the extent to which any
of the foregoing is covered by insurance;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the dilution from any issuance of securities, whether in connection with future capital-raising or acquisition transactions, the settlement of
litigation, including the pending issuance of shares in connection with the settlement of the consolidated securities class actions, or otherwise;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the extent to which we acquire, and our success in integrating, technologies or companies;
| | - |  | ------------------------------------------------------------------------------------------



| |  |  | the level of our expenses associated with the audit of our consolidated financial statements as well as compliance with other corporate governance and
regulatory developments or initiatives;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | regulatory changes by the FDA and other worldwide regulatory authorities; and
| | - |  | -----------------------------------------------------------------------------



| |  |  | technological developments in our markets.
| | - |  | ------------------------------------------



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General market conditions, the market
price of our common stock, uncertainty about the Trisomy 21 test and other screening and diagnostic tests, the uncertainty regarding the results of ongoing litigation matters and the investigations by the SEC, the U.S. Attorney and the FBI or other
factors may not support capital raising transactions. In addition, our ability to raise additional capital may depend upon obtaining stockholder approval. There can be no assurance that we will be able to obtain stockholder approval if it is
necessary. If we are unable to obtain sufficient additional funds on a timely basis or on terms favorable to us, we may be required to cease or reduce further commercialization of our products, to cease or reduce certain research and development
projects, to sell, license or otherwise dispose of some or all of our technology or assets or business units, to merge all or a portion of our business with another entity or we may not be able to continue as a going concern. If we raise additional
funds by selling shares of our capital stock (or otherwise issue shares of our capital stock or rights to acquire share of our capital stock), the ownership interest of our current stockholders will be diluted.

*Uncertainty regarding the Trisomy 21 test and other planned tests could materially adversely affect our business, financial condition and results
of operations.

We announced in April 2009 that previously reported test data and results for the noninvasive prenatal test for Trisomy
21 then under development could not be relied upon. As a result, the launch of the test did not occur. While Sequenom CMM is continuing its research and development program for a noninvasive prenatal test for Trisomy 21, it is no longer trying to
develop a test that analyzes RNA samples. Sequenom CMM is now focusing its research and development efforts on a noninvasive Trisomy 21 test that analyzes DNA samples utilizing massively parallel sequencing instead of our proprietary MassARRAY
platform. We and Sequenom CMM have limited experience developing and no experience commercializing sequencing-based technology and would need to rely on collaborative partners and sequencing technology provided by others in order to commercialize a
test utilizing sequencing. We have no control over the manufacture of the sequencers and consumables that Sequenom CMM expects to use for the Trisomy 21 test, including whether such sequencers will meet the FDAs quality system requirements for
design control for medical devices, and can give no assurance that we will be able to obtain a reliable supply of the sequencers and consumables that we will need for such a test.

The launch of any diagnostic test will require the completion of certain clinical development and commercialization activities, including the efforts of collaborative partners on which we rely, and the
expenditure of additional cash resources. We can give no assurance that we will be able to successfully complete the clinical development of any test or that we will be able to establish or maintain the collaborative relationships that are essential
to our clinical development and commercialization efforts. We also can give no assurance that we will be able to reduce our expenditures sufficiently or otherwise mitigate the risks associated with our business to raise enough capital to complete
clinical development or commercialization activities. Clinical development requires large numbers of patient samples and we may not be able to use prior collected samples or collect a sufficient number of appropriate samples in a timely manner in
the future to complete clinical development for a Trisomy 21 test or any other planned molecular diagnostic test. Failure to possess or to collect a sufficient number of appropriate samples in a timely manner could prevent or significantly delay our
ability to research, develop, complete clinical development and validation, obtain FDA approval as may be necessary, and launch, any of the planned tests. Our inability to use prior collected samples or any failure to complete our on-going clinical
studies or commercialization of our Trisomy 21 test, as well as other planned screening and diagnostic tests could have material adverse effects on our business, operating results or financial condition.

*We and certain of our former and current executive officers and directors have been named as defendants in litigation that could result in
substantial costs, divert managements attention and otherwise result in dilution to our stockholders.

We and certain of our
current and former executive officers were sued in 2009 for alleged violations of federal securities laws related to alleged false and misleading statements regarding the Trisomy 21 test previously under development. In May 2010, the U.S.
District Court for the Southern District of California entered an order approving a stipulation of final settlement reached in the class action securities lawsuits related to alleged violations of federal securities laws consolidated under the
captionIn re Sequenom Inc. Securities Litigation. Under the terms of the final settlement, we will issue approximately 6.8 million shares of our common stock once the class claims process is completed, which will represent significant
dilution to our stockholders. On September 24, 2010, we were served with a complaint in a lawsuit filed by our former chief financial officer. He has asserted various claims against us, our chief executive officer, our executive vice president
and one of our directors arising out of his resignation in September 2009. There are other claims that have not been settled. Although we intend to continue to vigorously defend such claims, there is no guarantee that we will be successful and we
may be have to pay damages awards or otherwise may enter into settlement arrangements in connection with such other claims. Any such payments or settlement arrangements could have material adverse effects on our business, operating results or
financial condition. We may be required to issue additional shares of our common stock or other securities convertible into or exchangeable for our common stock in connection with future settlements, which would result in additional dilution to our
stockholders. Even if the pending claims are not successful, litigation with respect to such claims could result in substantial costs and significant adverse impact on our reputation and divert managements attention and resources, which could
have a material adverse effect on our business, operating results or financial condition.



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*We are the subject of
investigations by the SEC, the Office of the U.S. Attorney for the Southern District of California and the FBI, each of which could further adversely affect our reputation, business prospects, operating results, or financial condition.

In June 2009, we received written notification that the staff of the SEC has initiated an investigation relating to our April 29,
2009 announcement regarding the Trisomy 21 test then under development. As part of this investigation, the SEC staff has also required us to produce information with respect to our announcements relating to our offer to acquire EXACT Sciences, Inc.
in January 2009. We intend to continue to cooperate fully with the SEC in its investigation. Following our announcement on September 28, 2009 regarding the completion of the independent investigation by the special committee of our board of
directors, the Office of the U.S. Attorney for the Southern District of California and the FBI contacted us to inquire about our announcement. We intend to continue to cooperate fully with the U.S. Attorney and the FBI.

In June 2010, the SEC filed a complaint against Elizabeth Dragon, who was formerly our Senior Vice President, Research and Development. The
complaint alleges that between June 2008 and January 2009 Dr. Dragon made or allowed for the dissemination of materially false and misleading statements regarding the Trisomy 21 test then under development, thereby inflating the price of our
stock. The SEC sought a permanent injunction against any future violations of the federal securities laws by Dr. Dragon, civil penalties, and imposition of an officer and director bar against her. On the same day, Dr. Dragon filed a
consent to judgment of permanent injunction and other relief. In the consent to judgment, Dr. Dragon, without admitting or denying the allegations in the SECs complaint, agreed to the permanent injunction against future violations of
federal securities laws, the director and officer bar, and civil penalties to be determined by the court.

In June 2010, the U.S.
Attorney filed a criminal information against Dr. Dragon. The criminal information charges Dr. Dragon with one count of conspiracy to commit securities fraud by conspiring to disseminate materially false and misleading statements regarding
the Trisomy 21 test then under development. On the same day, Dr. Dragon pled guilty to the criminal information, and the magistrate judge assigned to this matter recommended that the district court judge accept Dr. Dragons guilty
plea. The U.S. District Court has not yet sentenced Dr. Dragon.

We cannot predict the duration, scope or outcome of the investigations
by the SEC, the U.S. Attorney and the FBI. These matters have had an adverse impact on our reputation, and if they continue for a prolonged period of time, they may have a further adverse impact on our reputation, business prospects, operating
results or financial condition. In the event that the investigations by the SEC, the U.S. Attorney or the FBI lead to action against us or additional action against any current or former officer or director, our reputation, business prospects,
operating results or financial condition may be further adversely impacted. We have indemnification obligations to our current and former officers and directors, which require that we advance the expenses they incur, including the fees and costs of
their attorneys in connection with these matters. These matters are likely to result in the continued incurrence of significant legal expenses, which have exceeded our available insurance policy limits. These matters may result in the
diversion of managements attention from our business and may have a negative effect on employee morale.

*We have limited
experience.

Sequenom CMMs noninvasive prenatal and other molecular diagnostic tests are at an early stage of discovery and
development or have just recently been launched. Additionally, we continue to develop new products and create new applications for our products. We are also researching, developing and pursuing the commercialization of additional noninvasive
molecular diagnostic tests for prenatal genetic disorders and other diseases and disorders for use on our MassARRAY platform and other platforms, and we have limited or no experience in these applications of our technology and operating and selling
in these markets. We have limited experience developing and no experience commercializing sequencing-based technology and would need to rely on collaborative partners and sequencing technology provided by others in order to commercialize any test
utilizing sequencing, including a noninvasive prenatal test for Trisomy 21. Among other risks, using a platform provided by another party presents potential manufacturing supply and reliability, FDA regulatory compliance and design control, and
intellectual property infringement risks. Sequenom CMM has limited knowledge and experience regarding AMD and its associated genetics and genetic factors and as a result they may be unable to conduct and complete adequate research and development
activities in order to develop a commercially viable assay for AMD. You should evaluate us in the context of the uncertainties and complexities affecting an early stage company developing products and applications for the life science industries and
experiencing the challenges associated with entering into new markets that are highly competitive. Based on our limited experience in developing new products and applications, we may not:



| |  |  | effectively execute on or focus our research and development efforts;
| | - |  | ---------------------------------------------------------------------



| |  |  | properly model new opportunities to ensure appropriate resource allocation;
| | - |  | ---------------------------------------------------------------------------



| |  |  | create products that are appropriately developed to meet customer needs;
| | - |  | ------------------------------------------------------------------------



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| |  |  | perform adequate and timely validation testing of such products and applications;
| | - |  | ---------------------------------------------------------------------------------



| |  |  | effectively assess and meet regulatory requirements;
| | - |  | ----------------------------------------------------



| |  |  | ensure appropriate communication between different departments responsible for commercialization activities;
| | - |  | ------------------------------------------------------------------------------------------------------------



| |  |  | implement effective product launch or sales strategies;
| | - |  | -------------------------------------------------------



| |  |  | effectively design and manufacture products that achieve commercial success; or
| | - |  | -------------------------------------------------------------------------------



| |  |  | take other actions that ultimately lead to commercial success of any new products or applications that we develop.
| | - |  | ------------------------------------------------------------------------------------------------------------------

Sequenom CMM may face setbacks in the development and commercialization of noninvasive prenatal and other molecular diagnostic tests and technologies. As
previously announced, Sequenom CMM is no longer relying on prior studies related to the Trisomy 21 test then under development. While Sequenom CMM is continuing its research and development program for a noninvasive prenatal test for Trisomy 21, it
is no longer trying to develop a test that analyzes RNA samples. Sequenom CMM is now focusing its research and development efforts on a noninvasive Trisomy 21 test that analyzes DNA samples utilizing massively parallel sequencing instead of
Sequenoms proprietary MassARRAY platform.

We need to make significant investments to ensure our diagnostic tests as well as our genetic
analysis products and applications perform properly and are cost-effective. We or our partners will likely need to apply for and obtain certain regulatory approvals to sell certain of our products under development for diagnostic applications, and
it is uncertain whether such approvals will be granted. Even if we develop products for commercial use and obtain all necessary regulatory approvals, we may not be able to develop products that are accepted or satisfy customers in the genomic,
diagnostic, noninvasive prenatal, clinical research, pharmaceutical, or other markets or the emerging field of molecular medicine and that can be marketed and sold successfully.

*We may not be able to generate significant revenue from noninvasive prenatal diagnostic tests or any other tests we may develop.

Our business is substantially dependent on our ability to develop and launch our research use only tests. We have committed significant research and development resources to the development of
research-use-only and diagnostic tests, particularly noninvasive prenatal tests, for use on our proprietary MassARRAY system and other third-party platforms.

There is no guarantee that Sequenom CMM will successfully generate significant revenues from any tests that Sequenom CMM has launched or plans to launch in the future. In September 2009, Sequenom CMM
launched a carrier screening test for cystic fibrosis. In early 2010 Sequenom CMM launched noninvasive prenatal LDTs for Rhesus D. Sequenom CMM also plans to pursue the development and launch of a LDT for assessment of risk for developing
age-related macular degeneration, as well as a noninvasive prenatal LDT for Trisomy 21 and additional tests in the future. However, there is no guarantee that Sequenom CMM will be able to successfully launch any of these or any other diagnostic
tests on anticipated timelines or at all. We and Sequenom CMM have limited experience in licensing, manufacturing, selling, marketing or distributing our SEQureDx technology, or diagnostic or other tests. If we, or our partners, are not able to
successfully market or sell noninvasive prenatal research use only or diagnostic tests or other tests we may develop for any reason, including the failure to obtain any required regulatory approvals, we will not generate any revenue from the sale of
such tests. Even if we are able to develop noninvasive prenatal research use only or diagnostic or other tests for sale in the marketplace, a number of factors could impact our ability to sell such tests or generate any significant revenue from the
sale of such tests, including the following:



| |  |  | the outcome of the pending investigations by the SEC, the Office of the U.S. Attorney for the Southern District of California and the FBI and private
litigation;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the effectiveness of the remedial measures recommended by the special committee following its independent investigation and our ability to implement
additional controls and risk management measures as appropriate;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our ability to establish and maintain sufficient intellectual property rights in our products;
| | - |  | ----------------------------------------------------------------------------------------------



| |  |  | intellectual property rights held by others or others infringing our intellectual property rights;
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | the availability of adequate study samples for validation studies for any diagnostic tests we develop;
| | - |  | ------------------------------------------------------------------------------------------------------



| |  |  | reliance on Sequenom CMM, which is subject to routine governmental oversight and inspections for continued operation pursuant to CLIA, to process tests
ordered by physicians;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Sequenom CMMs ability to establish and maintain adequate infrastructure to support the commercial launch and testing service of its LDTs,
including establishing adequate laboratory space, information technology infrastructure, sample collection and tracking systems, electronic ordering and reporting systems and other infrastructure and hiring adequate laboratory and other personnel;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | the success of the validation studies for Sequenom CMMs diagnostic tests under development and its ability to publish study results in
peer-reviewed journals;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the availability of alternative and competing tests or products and technological innovations or other advances in medicine that cause our technologies
to be less competitive;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | compliance with federal, state and foreign regulations governing laboratory testing;
| | - |  | ------------------------------------------------------------------------------------



| |  |  | the sale and marketing of research use only or other tests, including noninvasive prenatal tests;
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | the accuracy rates of such tests, including rates of false-negatives and/or false-positives;
| | - |  | --------------------------------------------------------------------------------------------



| |  | concerns regarding the safety and effectiveness or clinical utility of noninvasive prenatal or other tests;
| | - | -----------------------------------------------------------------------------------------------------------



| |  | changes in the regulatory environment affecting health care and health care providers, including changes in laws regulating laboratory testing and/or device
manufacturers and any laws regulating prenatal testing;
| | - | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | the extent and success of Sequenom CMMs sales and marketing efforts and ability to drive adoption of its diagnostic testing services;
| | - | --------------------------------------------------------------------------------------------------------------------------------------



| |  | coverage and reimbursement levels by government payors and private insurers;
| | - | ----------------------------------------------------------------------------



| |  | the level of physician adoption of any diagnostic tests we or Sequenom CMM develops;
| | - | ------------------------------------------------------------------------------------



| |  | pricing pressures and changes in third-party payor reimbursement policies;
| | - | --------------------------------------------------------------------------



| |  | general changes or developments in the market for womens and/or prenatal health diagnostics, or diagnostics in general;
| | - | ------------------------------------------------------------------------------------------------------------------------



| |  | ethical and legal issues concerning the appropriate use of the information resulting from noninvasive prenatal diagnostic tests or other tests;
| | - | -----------------------------------------------------------------------------------------------------------------------------------------------



| |  | the refusal by women to undergo such tests for moral, religious or other reasons, or based on perceptions about the safety or reliability of such tests;
| | - | --------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | our ability to provide effective customer support; and
| | - | ------------------------------------------------------



| |  | our ability to promote and protect our SEQureDx brand and technology and our other brands and technologies.
| | - | -----------------------------------------------------------------------------------------------------------

*Our operating results may fluctuate significantly.

Our revenues and results of operations may fluctuate significantly, depending on a variety of factors, including the following:



| |  |  | our ability to manage costs and expenses and effectively implement our business strategy;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | our ability to raise additional capital and continue as a going concern;
| | - |  | ------------------------------------------------------------------------



| |  |  | our success and our distributors success in marketing and selling, and changes in the demand for, our products and services including our
MassARRAY platform and iPLEX multiplex genotyping application and other applications and related consumables, and demand for products and services for genotyping, DNA methylation (epigenetic analysis) and QGE (gene expression analysis) applications;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Sequenom CMMs success in providing its cystic fibrosis carrier screening and Rhesus D genotyping testing services and the level of reimbursement
Sequenom CMM receives and its collections for those tests;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our success in manufacturing, marketing and selling the MassARRAY Analyzer 4, our next generation MassARRAY system;
| | - |  | -------------------------------------------------------------------------------------------------------------------



| |  |  | the pricing of our products and services and those of our competitors;
| | - |  | ----------------------------------------------------------------------



| |  |  | our success in collecting payments from customers and collaborative partners, variations in the timing of these payments and the recognition of these
payments as revenues;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our success in responding to customer complaints effectively and managing relationships with our customers;
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | the timing and cost of any new product or service offerings by us;
| | - |  | ------------------------------------------------------------------



| |  |  | our ability to identify and develop in a cost-efficient manner new applications and products, such as noninvasive prenatal or other diagnostic assays
and other diagnostic technologies, our ability to improve current products to increase demand for such products and the success of such applications, products and improvements;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our ability to establish and maintain sufficient intellectual property rights in our products;
| | - |  | ----------------------------------------------------------------------------------------------



| |  |  | the potential need to acquire licenses to new technology, including genetic markers that may be useful in diagnostic applications, or to use our
technology in new markets, which could require us to pay unanticipated license fees and royalties in connection with licenses we may need to acquire;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | our research and development progress and how rapidly we are able to achieve technical milestones;
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | the cost, quality and availability of the MassARRAY Analyzer 4, consumable chips, also known as SpectroCHIP bioarrays, oligonucleotides, DNA samples,
tissue samples, reagents and related components and technologies;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | material developments in our customer and supplier relationships including our ability to successfully transition to new technologies;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Sequenom CMMs ability to validate any potential noninvasive prenatal or other diagnostic related products;
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | our ability to obtain regulatory approval of any potential diagnostic product;
| | - |  | ------------------------------------------------------------------------------



| |  |  | the level of our legal expenses and settlement payments and any fines or damages arising out of the matters that were the subject of an investigation
by a special committee of our board of directors in 2009, including the ongoing investigations by the SEC, the Office of the U.S. Attorney for the Southern District of California and the FBI, and the claims asserted by TrovaGene (formerly Xenomics),
none of which are covered any longer by insurance; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the level of our legal expenses and any fines, damages or settlement payments arising from the lawsuit filed by our former chief financial officer any
future investigation or litigation and the extent to which any of the foregoing is covered by insurance.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Further, our
revenues and operating results are difficult to predict because Sequenom CMMs diagnostic tests have only recently been launched and we do not have sufficient history to forecast revenues reliably for those tests, and also because our revenues
and operating results depend on the number, timing, and type of MassARRAY system placements that we make during the year and the quantity and timing of consumables sales for the installed base of systems. Changes in the relative mix of our MassARRAY
system and consumables sales, as well as service agreements can have a significant impact on our gross margin, as consumable sales and service agreements typically have margins significantly different than MassARRAY system sales. Our international
revenues and operating results are also difficult to predict because they depend upon the activities of our distributors in some countries. The absence of or delay in generating revenues will have a significant adverse effect on our operating
results from period to period and result in increased operating losses.

We believe that period-to-period comparisons of our financial results
will not necessarily be meaningful. You should not rely on these comparisons as an indication of our future performance. If our operating results in any future period fall below the expectations of securities analysts and investors, our stock price
will likely fall.

*A reduction in revenues from sales of MassARRAY products would harm our business.

We expect that sales of MassARRAY systems and consumables will account for most of our total revenues throughout 2010 and perhaps thereafter, unless and
until our noninvasive prenatal or Sequenom CMMs laboratory developed tests begin to generate significant revenues. The following factors, among others, would reduce the demand for MassARRAY products and services:



| |  |  | our success in manufacturing, marketing and selling the MassARRAY Analyzer 4, our next generation MassARRAY system;
| | - |  | -------------------------------------------------------------------------------------------------------------------



| |  |  | unstable, weak, or deteriorating economic conditions and fiscal policies or changes in fiscal policies that negatively impact customer buying
decisions;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | uncertainty about our ability to continue as a going concern and supply products and services to customers;
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | competition from other products and service providers or failure of our products or applications or services; and
| | - |  | -----------------------------------------------------------------------------------------------------------------



| |  |  | negative publicity or evaluations, particularly with respect to product warranty and repair and troubleshooting services provided to existing
customers, or with respect to the investigations by the SEC, the Office of the U.S. Attorney for the Southern District of California or the FBI, or the lawsuit filed by our former chief financial officer or other private litigation or developments
or events in our prenatal diagnostic and other programs.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

*Our revenues are subject to risks faced by our customers
and potential customers.

We expect that our revenues throughout 2010 and perhaps thereafter, unless and until our noninvasive prenatal
and Sequenom CMMs laboratory developed tests begin to generate significant revenues, will be derived primarily from MassARRAY system products provided to academic institutions and other research institutions. Our operating results could
fluctuate substantially due to reductions and delays in research and development expenditures by these customers. These reductions and delays could result from factors such as:



| |  |  | changes in economic conditions and possible country-based boycotts;
| | - |  | -------------------------------------------------------------------



| |  |  | changes in government programs that provide funding for these customers;
| | - |  | ------------------------------------------------------------------------



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| |  |  | other factors affecting research and development spending; and
| | - |  | --------------------------------------------------------------



| |  |  | uncertainty about our ability to continue as a going concern and fund operations and supply products and services to customers.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------

None of these factors are within our control. We have broadened the markets to which we sell our products and applications
and continue to develop new applications and products for use in new markets. We are targeting customers in clinical research and clinical marker validation, the emerging field of molecular medicine, genetic service laboratories, and animal testing
laboratories and diagnostic testing markets. We have limited or no experience operating in certain of these potential markets and, as a result, may be unable to develop products and applications that allow us to penetrate these markets or
successfully generate any revenue from sales in these markets. We have limited ability to forecast demand for our products and applications in these markets.

*We depend on sales of our consumable chips and other MassARRAY consumables for a significant portion of our revenues.

Sales of our consumable chips and other consumables for the MassARRAY system are an important source of revenue. Revenues from MassARRAY consumables totaled approximately 49% and 48% of our total revenues
for the three and nine months ended September 30, 2010, respectively, as compared to 59% and 57% of our total revenues for the three and nine months ended September 30, 2009, respectively. Factors which may limit the use of our consumable
chips and other consumables or otherwise adversely affect our revenues from consumables include:



| |  |  | the extent of our customers level of utilization of their MassARRAY systems;
| | - |  | -----------------------------------------------------------------------------



| |  |  | our ability to provide timely repair services and our ability to secure replacement parts, such as lasers, for our MassARRAY systems;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our ability to successfully transition to the MassARRAY Analyzer 4, our next generation MassARRAY system;
| | - |  | ---------------------------------------------------------------------------------------------------------



| |  |  | the extent to which customers increase multiplexing levels using iPLEX applications;
| | - |  | ------------------------------------------------------------------------------------



| |  |  | the availability and adoption of new technologies and applications provided by our competitors;
| | - |  | -----------------------------------------------------------------------------------------------



| |  |  | a failure to sell additional MassARRAY systems;
| | - |  | -----------------------------------------------



| |  |  | the termination of contracts with or adverse developments in our relations with suppliers of our consumables;
| | - |  | -------------------------------------------------------------------------------------------------------------



| |  |  | the training of customer personnel;
| | - |  | -----------------------------------



| |  |  | the acceptance of our technology by our customers;
| | - |  | --------------------------------------------------



| |  |  | any negative publicity with respect to the investigations by the SEC, the Office of the U.S. Attorney for the Southern District of California or the
FBI, the lawsuit filed by our former chief financial officer or other private litigation or developments or events in our prenatal diagnostic and other programs;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | uncertainty about our ability to continue as a going concern and fund operations and supply products and services to customers;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------



| |  |  | our ability to maintain necessary quality standards and specifications for our SpectroCHIP products; and
| | - |  | --------------------------------------------------------------------------------------------------------



| |  |  | our ability to transition to new suppliers for components for the MassARRAY Analyzer 4 and to maintain such relationships.
| | - |  | --------------------------------------------------------------------------------------------------------------------------

*Our wholly-owned subsidiary, Sequenom CMM, has limited experience operating a CLIA-certified laboratory. Its ability
to successfully develop and commercialize diagnostic tests will depend on its ability to successfully operate its CLIA-certified laboratory and obtain and maintain required regulatory licensures.

Sequenom CMM, our wholly-owned CLIA-certified laboratory located in Grand Rapids, Michigan, has validated and commercialized three LDTs. We acquired
Sequenom CMM in 2008 and as a result have limited experience operating a CLIA-certified laboratory. For future tests, if we are unable to successfully transfer our diagnostic technology to Sequenom CMM for validation or if Sequenom CMM is unable to
successfully develop and validate any LDTs or other tests that it intends to commercialize it may not be able to successfully commercialize such tests on the anticipated timelines or at all. Although we have invested substantially in Sequenom
CMMs infrastructure, it is possible that it may not have adequate infrastructure in place to meet demand for its currently launched tests or for the commercial launch and sale of future diagnostic tests that it develops. In May 2010 we
announced that we plan to establish an additional Sequenom CMM laboratory that complies with CLIA requirements in San Diego. Sequenom CMMs ability to successfully develop and validate LDTs will depend on its ability to successfully operate and
maintain required regulatory licensure. We cannot provide assurances that we or Sequenom CMM will have sufficient resources to successfully build or qualify an additional CLIA-certified laboratory.



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CLIA is designed to ensure the quality
and reliability of clinical laboratories by mandating specific standards in the areas of personnel qualifications, administration and participation in proficiency testing, patient test management, quality control, quality assurance and inspections.
The sanction for failure to comply with CLIA requirements may be suspension, revocation or limitation of a laboratorys CLIA certificate, which is necessary to conduct business, as well as significant fines and/or criminal penalties. Sequenom
CMM is also subject to regulation of laboratory operations under state clinical laboratory laws as will be any new CLIA-certified laboratory that we establish or acquire. State clinical laboratory laws may require that laboratories and/or laboratory
personnel meet certain qualifications, specify certain quality controls or require maintenance of certain records. Certain states, including Florida, Maryland, New York, Pennsylvania and Rhode Island, each requires that laboratories obtain licenses
to test specimens from patients residing in those states and additional states may require similar licenses in the future. If we are unable to obtain and maintain a license from New York, or are unable to maintain licenses from the other states, we
will not be able to process any samples from patients located in those states. Potential sanctions for violation of these statutes and regulations include significant fines and the suspension or loss of various licenses, certificates and
authorizations, which could adversely affect our business and results of operations.

*We may not successfully obtain regulatory
approval of any noninvasive prenatal or other diagnostic product or other product which we or our licensing or collaborative partners develop.

Products that we or our collaborators develop in the molecular medicine, diagnostic, noninvasive prenatal diagnostic, or other markets, depending on their intended use, may be regulated as medical devices
by the FDA and other worldwide regulatory authorities. In the United States our products may require either a premarket approval, or PMA, application or a premarket 510(k) clearance from the FDA, prior to commercialization. The 510(k) clearance
process usually takes from three to six months from submission, but can take significantly longer. The PMA process is much more costly, lengthy, uncertain, and generally takes from 9 to 18 months or longer from submission. In addition,
commercialization of any diagnostic or other product that we or our licensees or collaborators develop would depend upon successful completion of non-clinical testing and clinical studies. Non-clinical testing and clinical studies are long,
expensive, and uncertain processes, and we do not know whether we, our licensees, or any of our collaborators, would be permitted or able to undertake clinical studies of any potential products. It may take us or our licensees or collaborators many
years to complete any such testing, and failure could occur at any stage. Preliminary results of studies do not necessarily predict final results, and acceptable results in early studies may not be repeated in later studies. A number of companies in
the diagnostics industry, including biotechnology companies, have suffered significant setbacks in clinical studies, even after promising results in earlier studies. Delays or rejections of potential products may be encountered based on changes in
regulatory policy for product approval during the period of product development and regulatory agency review. If our projects reach clinical studies, we or our licensees or collaborators could decide to discontinue development of any or all of these
projects at any time for commercial, scientific, or other reasons.

The FDA currently regulates in vitro diagnostic devices (IVDs), as
products that assess human specimens and are intended for use in the diagnosis of diseases or other conditions, under the authority of Section 321(h) of the Federal Food, Drug, and Cosmetic Act (FDC Act). However, historically the FDA has
exercised enforcement discretion and exempted from regulation LDTs created and used within a single laboratory. LDTs have included a broad range of test types, from routine blood tests to complex genomic assays that seek to predict disease risk or a
patients response to treatment.The FDA has emphasized that its policy was to regulate LDTs in a way that would not inhibit the development of such tests or diminish the contribution they make to public health. Although LDTs to date
have not been subject to FDA regulation, certification of the laboratory is required under the CLIA to ensure the quality and validity of the tests. In addition, state laboratory licensing and inspection requirements may also apply. Although LDT
testing is currently solely under the purview of CMS and state agencies who provide oversight of laboratories, the FDA has been reviewing their approach to the oversight of LDTs, and the regulations may undergo change in the future.

In July 2010, the FDA held a two day public meeting to discuss the regulatory oversight of LDTs, which may result in new oversight in the future. We and
Sequenom CMM may not be able to meet such new regulatory oversight requirements and Sequenom CMM may be forced to stop offering LDTs until any such new regulatory requirements have been met, which would have a material adverse effect on our
business. We cannot predict the extent of the FDAs future regulation and policies with respect to LDTs in general or our diagnostic tests in particular. If Sequenom CMM is unable to successfully launch any LDTs or if it is otherwise required
to obtain FDA premarket clearance or approval prior to commercializing any testing service, its ability to generate revenue from the sale of such testing services may be delayed and it may never be able to generate significant revenues from sales of
diagnostic products.

*The FDA has recently expressed specific concern regarding genetic tests, including our SEQureDx technology, and
may require that such tests be offered only under 510(k) clearance or PMA and not as laboratory developed tests.

Recently, the FDA
sent letters to a number of entities offering laboratory developed genetic tests direct to consumers, noting that they did not have 510(k) premarket clearance or PMA numbers on file for such tests. We received a letter from the FDA



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in July 2010, to which we responded in August 2010 and which we discussed in a meeting with the FDA in September 2010. In these communications, we have informed the FDA that the SEQureDx
technology based tests developed and validated for use in and by Sequenom CMM as a testing service to physicians are not marketed or sold directly to the consumer. Samples are ordered by a physician, collected, sent to the laboratory for testing and
results are reported to the physician. The FDA indicated that it had no further questions on the direct-to-consumer issue at this time. Although the FDA has exercised enforcement discretion in the past for LDTs, we cannot assure you that the FDA
will abstain from such action in the future against us, which would have material adverse effects on our business.

*The results of
non-clinical and clinical studies are not necessarily predictive of future results, and our current diagnostic products and product candidates may not have favorable results in later studies.

To date, safety and effectiveness data has not yet been demonstrated in clinical studies for any of our diagnostic products. Favorable results in early
studies may not be repeated in later studies that would be required to obtain either PMA or 510(k) clearance from the FDA. Our diagnostic products may fail to demonstrate positive results in clinical studies despite having progressed through
earlier-stage studies. Limited results from earlier-stage studies may not predict results from studies in larger numbers of subjects drawn from more diverse populations over a longer period of time. Unfavorable results from ongoing non-clinical and
clinical studies could result in delays, modifications or abandonment of ongoing or future clinical studies, or abandonment of a product development program. Non-clinical and clinical results or other study results are frequently susceptible to
varying interpretations that may delay, limit or prevent regulatory approvals or commercialization.

*Because we exclusively licensed
our noninvasive prenatal diagnostic and gender determination testing rights from Isis any dispute with Isis may adversely affect our and Sequenom CMMs ability to develop and commercialize diagnostic tests based on these licensed rights.

In October 2005, we entered into an exclusive license to noninvasive prenatal diagnostic rights (United States Patent
No. 6,258,540 and foreign equivalents) with Isis, which we amended in October 2006 and in November 2007 to also include exclusive rights to intellectual property for noninvasive prenatal gender determination testing for social and lifestyle
purposes. In November 2009 we entered into a third amendment to modify certain time-based commercial launch milestones relating to aneuploidy and other products. We and Sequenom CMM are using and intend to continue to use the rights that we acquired
under the license to develop and commercialize noninvasive prenatal nucleic acid based tests, including gender determination tests. If there is any dispute between us and Isis regarding our rights under the license agreement, or we do not achieve
the commercial launch milestones, as modified, in a timely manner, our and Sequenom CMMs ability to exclusively commercialize these diagnostic tests may be adversely affected and could delay or completely terminate our product development and
commercialization efforts for these diagnostic tests.

*We, Sequenom CMM and our licensees and collaborators may not be successful in
developing or commercializing diagnostic products, diagnostic assays including noninvasive prenatal diagnostic products, or other products using our products, services, or discoveries.

Development of diagnostic or other products by us or Sequenom CMM, our licensees, or our collaborators are subject to risks of failure inherent in the development and commercial viability of any such
product, such as demand for such product. These risks further include the possibility that such product would:



| |  |  | be found to be ineffective, unreliable, inadequate or otherwise fail to receive regulatory approval;
| | - |  | ----------------------------------------------------------------------------------------------------



| |  |  | be difficult or impossible to manufacture on a commercial scale;
| | - |  | ----------------------------------------------------------------



| |  |  | be uneconomical to market or otherwise not be effectively marketed;
| | - |  | -------------------------------------------------------------------



| |  |  | fail to be successfully commercialized if adequate reimbursement from government health administration authorities, private health insurers, and other
organizations for the costs of such product is unavailable;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | be impossible to commercialize because such product infringes on the proprietary rights of others or competes with products marketed by others that are
superior; or
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | fail to be commercialized prior to the successful marketing of similar products by competitors.
| | - |  | -----------------------------------------------------------------------------------------------

If a licensee discovers or develops diagnostic or other products or we or Sequenom CMM or a collaborator, discover or develop diagnostic or other
products using our technology, products, services, or discoveries, we may rely on that licensee or collaborator (hereafter referred to as partner) for product development, regulatory approval, manufacturing, and marketing of those
products before we can realize revenue and some or all of the milestone payments, royalties, or other payments we may be entitled to under the terms of the licensing or collaboration agreement. If we are unable to successfully achieve milestones or
our partners fail to develop successful products, we will not earn the revenues contemplated and we may also lose exclusive (as in the case of our license agreement with Isis, under which we in-license our fundamental noninvasive prenatal diagnostic
technology) or non-exclusive license rights to intellectual property that are required to commercialize



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such products. Our agreements may allow our partners significant discretion in electing whether to pursue any of these activities. We cannot control the amount and timing of resources our
partners may devote to our programs or potential products. As a result, we cannot be certain that our partners will choose to develop or commercialize any products or will be successful in doing so. In addition, if a partner is involved in a
business combination, such as a merger or acquisition, or changes its business focus, its performance under its agreement with us may suffer and, as a result, we may not generate any revenues or only limited revenues from the royalty, milestone, and
similar payment provisions contained in our agreement with that partner.

*Our ability to compete in the market may decline if we lose
some of our intellectual property rights or are unable to obtain other intellectual property rights.

Our success will depend on our
ability to obtain and protect patents on our technology, to protect our trade secrets, and to maintain our rights to licensed intellectual property or technologies, including United States Patent No. 6,258,540 and foreign equivalents, which we
have licensed from Isis for noninvasive prenatal diagnostics and noninvasive prenatal gender determination testing for social and lifestyle purposes. Our patent applications or those of our licensors may not result in the issue of patents in the
United States or other countries. Our patents or those of our licensors may not afford meaningful protection for our technology and products. Others may challenge our patents or those of our licensors in litigation or by proceedings such as
interference, oppositions and reexaminations, as is the case with the appeal pending before the European Patent Office with respect to the European patent equivalent of United States Patent No. 6,258,540 (European Patent No. 994963). As a
result, our patents or those of our licensors could be narrowed or invalidated or become unenforceable. With respect to the Trisomy 21 test under development, Sequenom CMM is currently focusing its research and development efforts on a test that
analyzes DNA samples utilizing massively parallel sequencing instead of our proprietary MassARRAY platform. While we believe our exclusive license to United States Patent No. 6,258,540 provides us substantial rights with respect to prenatal
diagnostic products independent of platform and we are also the licensee of a patent application that contains claims regarding the use of massively parallel sequencing in prenatal diagnostics, we are also aware of other patent applications that
contain the same claims and similar claims and are owned or controlled by a potential competitor. The issuance by the U.S. Patent and Trademark Office of a patent with respect to any of these applications could result in an interference proceeding,
which would be expensive and there can be no assurance that we would prevail in such a proceeding.

Competitors may develop products similar
to ours that do not conflict with our patents or patent rights. Others may develop products, technologies or methods, including noninvasive prenatal tests or other diagnostic tests in violation of our patents or those of our licensors, or by
operating around our patents or license agreements, which could reduce sales of our consumables or reduce or remove our noninvasive prenatal and other diagnostic commercialization opportunities. To protect or enforce our patent rights, we may
initiate interference proceedings, oppositions, reexaminations or litigation against others. However, these activities are expensive, take significant time and divert managements attention from other business concerns. We may not prevail in
these activities. The patent position of biotechnology companies generally is highly uncertain and involves complex legal and factual questions that are often the subject of litigation. No consistent policy has emerged from the U.S. Patent and
Trademark Office, the offices of foreign countries or the courts regarding the breadth of claims allowed or the degree of protection afforded under biotechnology patents. There is a substantial backlog of biotechnology patent applications at the
U.S. Patent and Trademark Office and of the equivalent offices around the world and the approval or rejection of patent applications may take several years.

*Claims by other companies that we infringe their intellectual property rights or that patents on which we rely are invalid could adversely affect our business.

From time to time, companies have asserted, and may again assert, patent, copyright and other intellectual proprietary rights against our products or
products using our technologies. These claims have resulted and may in the future result in lawsuits being brought against us. We may not prevail in any lawsuits alleging patent infringement given the complex technical issues and inherent
uncertainties in intellectual property litigation. If any of our products, technologies or activities, in particular our iPLEX products and our MassARRAY system and mass spectrometer (including the MassARRAY Analyzer 4, our next-generation MassARRAY
system), from which we derive a substantial portion of our revenues, or the Trisomy 21 test under development, were found to infringe on another companys intellectual property rights, we could be subject to an injunction that would force the
removal of such product from the market or we could be required to redesign such product, which could be costly. We could also be ordered to pay damages or other compensation, including punitive damages and attorneys fees to such other
company. A negative outcome in any such litigation could also severely disrupt the sales of our marketed products to our customers or their customers, which in turn could harm our relationships with our customers, our market share and our product
revenues. Even if we are ultimately successful in defending any intellectual property litigation, such litigation is expensive and time consuming to address, will divert our managements attention from our business and may harm our reputation.



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Other companies or entities also may
commence actions seeking to establish the invalidity of our patents. In the event that one or more of our patents are challenged, a court may invalidate the patent(s) or determine that the patent(s) is not enforceable, which could harm our
competitive position. If one or more of our patents are invalidated or found to be unenforceable, or if the scope of the claims in any of these patents is limited by a court decision, we could lose certain market exclusivity afforded by patents
owned or in-licensed by us and potential competitors could more easily bring products to the market that directly compete with our own. Such adverse decisions may negatively impact our revenues.

The rights we rely upon to protect the intellectual property underlying our products may not be adequate, which could enable others to use our
technology and reduce our ability to compete with them.

We require our employees, consultants, advisors, and collaborators to execute
confidentiality agreements and in certain cases, assignment or license agreements. We cannot guarantee that these agreements will provide us with adequate intellectual property ownership or protection against improper or unauthorized use or
disclosure of confidential information or inventions. In some situations, these agreements may conflict with or be subject to the rights of others with whom our employees, consultants, advisors, or collaborators have prior employment or consulting
relationships. In some situations, as is the case with our employees in Germany, these types of agreements or relationships are subject to foreign law, which provides us with less favorable rights or treatment than under United States law. Others
may gain access to our inventions, trade secrets or independently develop substantially equivalent proprietary materials, products, information, and techniques.

*Our business and industry are subject to complex and costly regulation and if government regulations are interpreted or enforced in a manner adverse to us, we may be subject to enforcement actions,
penalties, exclusion, and other material limitations on our operations.

We are subject to various federal, state and local laws
targeting fraud and abuse in the health care industry, including anti-kickback and false claims laws. The Federal Anti-Kickback Statute prohibits persons from knowingly and willfully soliciting, offering, receiving or providing remuneration,
directly or indirectly, in exchange for or to induce either the referral of an individual, or the furnishing or arranging for a good or service, for which payment may be made under a federal health care program, such as Medicare or Medicaid. The
definition of remuneration has been broadly interpreted to include anything of value, including, for example, gifts, discounts, the furnishing of free supplies, equipment or services, credit arrangements, payments of cash and waivers of
payment. The recently enacted Patient Protection and Affordable Care Act, as amended by the Health Care and Education Affordability Reconciliation Act (collectively, the PPACA), among other things, amends the intent requirement of the
federal anti-kickback and criminal health care fraud statutes. A person or entity no longer needs to have actual knowledge of this statute or specific intent to violate it. In addition, the PPACA provides that the government may assert that a claim
including items or services resulting from a violation of the federal anti-kickback statute constitutes a false or fraudulent claim for purposes of the false claims statutes.

The Anti-Kickback Statute is broad and prohibits many arrangements and practices that are lawful in businesses outside of the health care industry. Recognizing that the Anti-Kickback Statute is broad and
may technically prohibit many innocuous or beneficial arrangements, Congress authorized the U.S. Department of Health & Human Services Office of Inspector General (OIG) to issue a series of regulations, known as safe harbors.
These safe harbors set forth requirements that, if met in their entirety, will assure health care providers and other parties that they will not be prosecuted under the Anti-Kickback Statute. The failure of a transaction or arrangement to fit
precisely within one or more safe harbors does not necessarily mean that it is illegal, or that prosecution will be pursued. However, conduct and business arrangements that do not fully satisfy each applicable safe harbor may result in increased
scrutiny by government enforcement authorities, such as the OIG. Many states have adopted laws similar to the Anti-Kickback Statute. Some of these state prohibitions apply to referral of patients for health care items or services reimbursed by any
payor, not only the Medicare and Medicaid programs, and do not contain identical safe harbors. Government officials have focused their enforcement efforts on marketing of health care services and products, among other activities, and have brought
cases against numerous companies and certain sales and marketing personnel for allegedly offering unlawful inducements to potential or existing customers in an attempt to procure their business.

Another development affecting the health care industry is the increased use of the federal civil False Claims Act and, in particular, actions brought
pursuant to the False Claims Acts whistleblower or qui tam provisions. The False Claims Act imposes liability on any person or entity who, among other things, knowingly presents, or causes to be presented, a false or
fraudulent claim for payment by a federal health care program. The qui tam provisions of the False Claims Act allow a private individual to bring actions on behalf of the federal government alleging that the defendant has submitted a false claim to
the federal government, and to share in any monetary recovery. In recent years, the number of suits brought by private individuals has increased dramatically. In addition, various states have enacted false claim laws analogous to the False Claims
Act. Many of these state laws apply where a claim is submitted to any third-party payor and not merely a federal health care program. When an entity is determined to have violated the False Claims Act, it may be required to pay up to three times the
actual damages sustained by the government, plus civil penalties of $5,500 to $11,000 for each separate false



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claim. There are many potential bases for liability under the False Claims Act. Liability arises, primarily, when an entity knowingly submits, or causes another to submit, a false claim for
reimbursement to the federal government. The False Claims Act has been used to assert liability on the basis of inadequate care, kickbacks and other improper referrals, improper use of Medicare numbers when detailing the provider of services, and
allegations as to misrepresentations with respect to the services rendered. Our activities relating to the sale and marketing of our products may be subject to scrutiny under these laws. We are unable to predict whether we would be subject to
actions under the False Claims Act or a similar state law, or the impact of such actions. However, the costs of defending such claims, as well as any sanctions imposed, could significantly adversely affect our financial performance.

Federal law prohibits any entity from offering or transferring to a Medicare or Medicaid beneficiary any remuneration that the entity knows or should
know is likely to influence the beneficiarys selection of a particular provider, practitioner or supplier of Medicare or Medicaid payable items or services, including waivers of copayments and deductible amounts (or any part thereof) and
transfers of items or services for free or for other than fair market value. Entities found in violation may be liable for civil monetary penalties of up to $10,000 for each wrongful act. Although we believe that our sales and marketing practices
are in material compliance with all applicable federal and state laws and regulations, relevant regulatory authorities may disagree and violation of these laws, or, our exclusion from such programs as Medicaid and other governmental programs as a
result of a violation of such laws, could have a material adverse effect on our business, results of operations, financial condition and cash flows.

*We have a history of generating a large percentage of our revenue at the end of each quarterly accounting period.

Due to the manner in which many customers in target markets for our MassARRAY system products allocate and spend their budgeted funds for acquisition of our products, a large percentage of our sales are
booked at the end of each quarterly accounting period. Because of this timing of our sales, we may not be able to reliably predict order volumes and our quarterly revenues. A sales delay of only a few days may significantly impact our
quarter-to-quarter comparisons. If our quarterly or year-end revenues fall below the expectations of securities analysts and investors, our stock price may decline. Similarly, if we are unable to ship our customer orders on time, or if extended
payment terms are required, there could be a material adverse effect on revenues for a given quarter.

If our customers are unable to
adequately prepare samples for our MassARRAY system, the overall market demand for our products may decline.

Before using the
MassARRAY system, customers must prepare samples by following several steps that are subject to human error, including DNA isolation and DNA amplification. If DNA samples are not prepared appropriately, or the proposed assays are too complex, the
MassARRAY system may not generate a reading or a correct reading. If our customers experience these difficulties, they might achieve lower throughput levels than specified for the system. If our customers are unable to generate expected levels of
throughput, they might not continue to purchase our consumables, they could express their discontent with our products to others, or they could collaborate with others to jointly benefit from the use of our products. Any or all of these actions
would reduce the overall market demand for our products. From time to time, we have experienced customer complaints regarding data quality and difficulty in processing more complex assays.

*The sales cycles for our MassARRAY system products are lengthy, and we may expend substantial funds and management effort with no assurance of successfully selling our products or services.

The sales cycles for our MassARRAY system products are typically lengthy. Our sales and licensing efforts require the effective
demonstration of the benefits, value, and differentiation and validation of our products and services, and significant education and training of multiple personnel and departments within a customer organization. We may be required to negotiate
agreements containing terms unique to each prospective customer or licensee which would lengthen the sales cycle. We may expend substantial funds and management effort with no assurance that we will sell our products or services. In addition, this
lengthy sales cycle makes it more difficult for us to accurately forecast revenue in future periods and may cause revenues and operating results to vary significantly in such periods.

*We may not be able to successfully adapt or maintain our products for commercial applications.

A number of potential applications of our MassARRAY technology and potential products, including research use only and diagnostic applications for noninvasive prenatal and other molecular testing, may
require significant enhancements in our core technology or the in-licensing of intellectual property rights or technologies. In connection with developing new products and applications, we may not effectively deploy our research and development
efforts in a cost-efficient manner or otherwise in a manner that leads to the successful commercialization and scale-up of such products and applications. If we are unable to complete the development, introduction, or scale-up of any product, or if
any of our products or applications, such as gene expression analysis, epigenetic analysis or iPLEX multiplexing, do not achieve a significant level of market acceptance, our business, financial condition and results of operations could be seriously
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acceptance will depend on many factors, including demonstrating to customers that our technology and products are cost competitive or superior to other technologies and products that are
available now or that may become available in the future. We believe that our revenue growth and profitability will substantially depend on our ability to overcome significant technological and other challenges and successfully introduce our newly
developed products, applications, and services into the marketplace.

*We have limited commercial production capability and experience
and may encounter production problems or delays, which could result in lower revenue.

We partially assemble the MassARRAY system and
partially manufacture our consumable chips and MassARRAY kits. The MassARRAY Analyzer 4, our next-generation MassARRAY system, requires more outsourcing of component manufacturing and more internal assembly. To date, we have only produced our
current products in moderate quantities. We may not be able to maintain acceptable quality standards as we ramp up production of the MassARRAY Analyzer 4. To achieve anticipated customer demand levels, we will need to transition and scale-up our
production capability and maintain adequate levels of inventory while manufacturing our products at a reasonable cost. We may not be able to produce sufficient quantities to meet market demand or manufacture our product at a reasonable cost. If we
cannot achieve the required level and quality of production, we may need to abandon or reduce our internal efforts and fully outsource production or rely on licensing and other arrangements with third parties. This reliance could reduce our gross
margins and expose us to the risks inherent in relying on others. We might not be able to successfully outsource our production or enter into licensing or other arrangements with these third parties, which would adversely affect our business. Also,
from time to time we have experienced quality issues on some of our chips. We may not be able to maintain acceptable quality standards for production of our chips, which could harm our business and result in lower revenue.

*We depend on third-party products and services and limited sources of supply to develop and manufacture our products.

We rely on outside vendors to supply certain products and the components and materials used in our products. Many of these products, components and
materials are obtained from a single supplier or a limited group of suppliers and some have lead-times of several months. The MassARRAY Analyzer 4 is comprised of numerous components each provided to us from a single source and some of which have
lead times of several months. Regarding other elements of our MassARRAY system, we also have sole suppliers for our chips, our pins for our nanodispenser and our liquid handling device.

Our consumables also include components provided by sole suppliers. In the event of any adverse developments with these vendors, our product supply may be interrupted and obtaining substitute components
could be difficult or require us to re-design our products and assays which would have an adverse impact on our business. In the past, we have experienced quality problems with and delays in receiving components used to produce our consumable chips
and quality issues with our chips, and also had technical difficulties with our pin-tool nanoliter dispenser device. We have also experienced software and operational difficulties with our MassARRAY system. Our reliance on outside vendors generally
and a sole or a limited group of suppliers in particular involves several risks, including:



| |  |  | the inability to obtain an adequate supply of properly functioning, required products, components, and materials due to capacity constraints, product
defects, a discontinuance of a product by a supplier, or other supply constraints;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | reduced control over quality and pricing of products, components, and materials; and
| | - |  | ------------------------------------------------------------------------------------



| |  |  | delays and long lead times in receiving products, components, or materials from vendors.
| | - |  | ----------------------------------------------------------------------------------------

*If the validity of an informed consent from a subject was to be challenged, we could be forced to stop using some of our resources, which would
hinder our gene discovery out licensing efforts and our diagnostic product development efforts.

We have attempted to ensure that all
clinical data and genetic and other biological samples that we receive from our clinical collaborators have been collected from subjects who have provided appropriate informed consent for the data and samples provided for purposes which extend to
include commercial diagnostic product development activities. We have attempted to ensure that data and samples that have been collected by our clinical collaborators are provided to us on a patient de-identified basis. We have also attempted to
ensure that the subjects from whom our data and samples are collected do not retain or have conferred on them any proprietary or commercial rights to the data or any discoveries derived from them. Our clinical collaborators are based in a number of
different countries, and, to a large extent, we rely upon our clinical collaborators for appropriate compliance with the subjects informed consent provided and with local law and regulation. That our data and samples come from and are
collected by entities based in different countries results in complex legal questions regarding the adequacy of informed consent and the status of genetic material under a large number of different legal systems. The subjects informed consent
obtained in any particular country could be challenged in the future, and those informed consent could prove invalid, unlawful or otherwise inadequate for our purposes. Any findings against us, or our clinical collaborators, could deny us access to
or force us to stop using some of our clinical or genetic resources, which would hinder our diagnostic product development efforts. We could become involved in legal challenges, which could consume a substantial proportion of our management and
financial resources.



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If we cannot obtain licenses to
patented SNPs and genes relevant to our diagnostic areas of interest, we could be prevented from obtaining significant revenue or becoming profitable.

The U.S. Patent and Trademark Office has issued and continues to issue patents claiming single SNP and gene discoveries and their related associations and functions. If certain SNPs and genes are
patented, we will need to obtain rights to those SNPs and genes to develop, use, and sell related assays and other types of products or services utilizing such SNPs and genes. Required licenses may not be available on commercially acceptable terms.
If we were to fail to obtain licenses to certain patented SNPs and genes, we might never achieve significant revenue from our diagnostic product development.

If the medical relevance of SNPs is not demonstrated or is not recognized by others, we may have less demand for our products and services and may have less opportunity to enter into diagnostic
product development and commercialization collaborations with others.

Some of the products we hope to develop involve new and unproven
approaches or involve applications in markets that we are only beginning to explore. They are based on the assumption that information about genes and SNPs may help scientists better understand conditions or complex disease processes. Scientists
generally have a limited understanding of the role of genes and SNPs in diseases, and few products based on gene discoveries have been developed. We cannot be certain that genetic information will play a key role in the development of diagnostics or
other products in the future, or that any genetic-based findings would be accepted by diagnostic, pharmaceutical, or biotechnology companies or by any other potential market or industry segment. If we or our customers or collaborators are unable to
generate valuable information that can be used to develop diagnostics or other products, the demand for our products, applications, and services will be reduced and our business will be harmed.

*We may not be able to form and maintain the collaborative relationships or the rights to third-party intellectual property and technologies that
our business strategy requires and such relationships may lead to disputes over technology rights or product revenue, royalties, or other payments.

We form research collaborations and licensing arrangements with collaborators to operate our business successfully. To succeed, we will have to maintain our existing relationships and establish additional
collaborations and licensing arrangements. Our current strategy includes pursuing partnering opportunities with larger companies interested in or involved in the development of pharmaceutical and diagnostic products. Our strategy also includes
obtaining licenses to third-party intellectual property rights and technologies, such as our exclusive license to noninvasive prenatal analysis rights that we acquired from Isis (United States Patent No. 6,258,540 and foreign equivalents) and
other rights we have acquired for the use of fetal nucleic acids obtained from maternal urine for noninvasive prenatal diagnostics and to pursue development of a LDT for assessment of risk for developing age-related macular degeneration, to
potentially expand our product portfolio and generate additional sources of revenue. If we do not achieve certain milestones in a timely manner, particularly with respect to the planned test for Trisomy 21, we risk losing our exclusive license
rights from Isis and may also lose rights under our other licenses if we do not adequately pursue commercialization in the manner specified in those licenses. In the case of the Isis license, we have satisfied all milestone obligations under the
license agreement regarding Sequenom CMMs development of a Rhesus D genotyping LDT and a fetal sex determination LDT, and provided Sequenom CMM meets its anticipated launch and our PMA submission dates for a Trisomy 21 test, we will have
satisfied all milestone obligations under the license agreement regarding that test and the license would no longer be convertible to a non-exclusive license. Disputes may also arise in connection with these collaborations and licensing
arrangements, which may result in liability to us or may result in the loss of acquired technology that may adversely affect our business. For example, as described elsewhere in this report, TrovaGene (formerly Xenomics) has asserted claims
regarding our rights under the license agreement.

We cannot be sure that we will be able to establish any additional research collaborations,
licensing arrangements, or other partnerships necessary to develop and commercialize products or that we can do so on terms favorable to us. If we are unable to establish these collaborations or licensing arrangements, we may not be able to
successfully develop any diagnostic or other products or applications including the Trisomy 21 test under development, or generate any milestone, royalty, or other revenue from sales of these products or applications. If our collaborations or
licensing arrangements are not successful or we are not able to manage multiple collaborations successfully, our programs will suffer and we may never generate any revenue from sales of products based on licensed rights or technologies or under
these collaborative or licensing arrangements. If we increase the number of collaborations or licensing agreements, it will become more difficult to manage the various relationships successfully and the potential for conflicts among the
collaborators and licensees or licensors will increase. Conflicts with our collaborators, licensees or licensors, or other factors may lead to disputes over technology or intellectual property rights or product revenue, royalties, or other payments,
which may adversely affect our business.



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In addition, our government grants
provide the government certain license rights to inventions resulting from funded work. Our business could be harmed if the government exercises those rights.

If we do not succeed in obtaining development and marketing rights for products developed in collaboration with others, our revenue and profitability prospects could be substantially harmed.

Our business strategy includes, in part, the development of noninvasive prenatal diagnostic and other products in collaboration with
others, or utilizing the technology of others, and we intend to obtain commercialization or royalty rights to those products or technologies. If we are unable to obtain such rights, or are unable to do so on favorable financial terms, our revenue
and profitability prospects could be substantially harmed. To date, we have initiated limited activities towards commercializing products developed in collaboration with, or utilizing the technology of, others. Even if we obtain commercialization
rights, commercialization of products may require resources that we do not currently possess and may not be able to develop or obtain, or commercialization may be financially unattractive based upon the revenue-sharing terms offered by potential
licensors or provided for in the relevant agreement.

Ethical, privacy, or other concerns about the use of genetic information could
reduce demand for our products and services.

Genetic testing, including gender determination and Trisomy 21 testing, has raised
ethical issues regarding privacy and the appropriate uses of the resulting information. For these reasons, governmental authorities may limit or otherwise regulate the use of genetic testing or prohibit testing for genetic predisposition to certain
conditions, particularly for those that have no known cure. Such concerns may lead individuals to refuse to use genetics tests even if permitted. Any of these scenarios could reduce the potential markets for our products and services, which would
seriously harm our business, financial condition, and results of operations.

If we breach any of the terms of our license or supply
agreements, or these agreements are otherwise terminated or modified, the termination or modification of such agreements could result in our loss of access to critical components and could delay or suspend our commercialization efforts.

We have sourced or licensed components of our technology from other parties. Our failure to maintain continued supply of such
components, particularly in the case of sole suppliers, or the right to use these components would seriously harm our business, financial condition, and results of operations. As a result, in the event that demand for our products declines or does
not meet our forecasts, we could have excess inventory or increased expenses or our margins could decrease which could have an adverse impact on our financial condition and business. In the event of any adverse developments with these vendors, our
product supply may be interrupted, which would have an adverse impact on our business. Changes to or termination of our agreements or inability to renew our agreements with these parties or enter into new agreements with other suppliers could result
in the loss of access to these aspects of our technology or other intellectual property rights or technologies that we may acquire from time to time and could impair, delay, or suspend our commercialization efforts. While we negotiate for agreement
periods or notice of termination periods that provide us reasonable periods of time to secure alternative supplies, and require that such agreements may not be terminated without advance notice arbitrarily or without good reason, such as uncured
breach or insolvency, these negotiations are often unsuccessful or such provisions may not provide us with adequate time to secure alternative supplies, provide us with access to alternative technologies on commercially acceptable terms, or
otherwise provide us with adequate protection.

*We may not successfully integrate acquired businesses and may not successfully complete
the acquisition of businesses or technologies that we desire to acquire.

We may acquire additional businesses or technologies, or
enter into other strategic transactions. For example, in November 2008, we completed the acquisition of the Center for Molecular Medicine, LLC, a CLIA-certified laboratory facility that we call Sequenom CMM, and in February 2009 we completed the
acquisition of substantially all of the assets of SensiGen, LLC.

Managing these and future acquisitions entails numerous operational and
financial risks, including:



| |  |  | the inability to retain key employees of any acquired businesses or hire enough qualified personnel to staff any new or expanded operations;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the impairment of relationships with key customers of acquired businesses due to changes in management and ownership of the acquired businesses;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the inability to sublease on financially acceptable terms excess leased space or terminate lease obligations of acquired businesses that are not
necessary or useful for the operation of our business;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the exposure to federal, state, local and foreign tax liabilities in connection with any acquisition or the integration of any acquired businesses;
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| |  |  | the exposure to unknown liabilities or disputes with the former stakeholders or management or employees of acquired businesses;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------



| |  |  | higher than expected acquisition and integration expenses that would cause our quarterly and annual operating results to fluctuate;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------



| |  |  | increased amortization expenses if an acquisition results in significant intangible assets;
| | - |  | -------------------------------------------------------------------------------------------



| |  |  | combining the operations and personnel of acquired businesses with our own, which would be difficult and costly;
| | - |  | ----------------------------------------------------------------------------------------------------------------



| |  |  | disputes over rights to acquired technologies or with licensors or licensees of those technologies; and
| | - |  | -------------------------------------------------------------------------------------------------------



| |  |  | integrating or completing the development and application of any acquired technologies, which would disrupt our business and divert managements
time and attention.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------

We may also attempt to acquire businesses or technologies or attempt to enter into strategic
transactions that we are unable to complete. For example, in January 2009, we launched an exchange offer to acquire EXACT Sciences Corporation, but were not able to complete the transaction prior to EXACT Sciences selling and licensing a substantial
portion of its assets and intellectual property to a third party. If we are unable to complete such transactions, we may expend substantial resources and ultimately not successfully complete the transaction. Such transactions may also distract
management and result in other adverse effects on our business and operations. These transactions may also involve the issuance of shares of our capital stock, which may result in dilution to our stockholders.

*We may not be able to successfully compete in the biotechnology and diagnostic industries.

The biotechnology and diagnostic industries are highly competitive. We expect to compete with a broad range of companies in the United States and other
countries that are engaged in the development and production of products, applications, services, and strategies to analyze genetic information and strategies to develop and commercialize diagnostic, noninvasive prenatal diagnostic, and other
products for customers in the clinical research and clinical marker validation and molecular medicine fields as well as diagnostic service laboratories, animal testing and food safety labs, and customers in other markets. They include:



| |  |  | biotechnology, pharmaceutical, diagnostic, chemical, and other companies;
| | - |  | -------------------------------------------------------------------------



| |  |  | academic and scientific institutions;
| | - |  | -------------------------------------



| |  |  | governmental agencies; and
| | - |  | --------------------------



| |  |  | public and private research organizations.
| | - |  | ------------------------------------------

Many of our competitors have much greater financial, technical, research, marketing, sales, distribution, service, and other resources than we do. Our competitors may offer broader product lines and
services and have greater name recognition than we do. Several companies are currently making or developing products that compete with our products. Our competitors may develop or market technologies or products that are more effective or
commercially attractive than our current or future products that may render our technologies or products obsolete or that have superior intellectual property rights. The delay in the development and launch of a Trisomy 21 test, as well as the
announcement of investigations by the SEC, the Office of the U.S. Attorney for the Southern District of California and the FBI, and the lawsuit filed by our former chief financial officer or other pending private litigation may adversely affect our
competitive position and the market acceptance of any tests that we may commercialize and may affect our ability to maintain and recruit key personnel.

We may potentially compete with our customers, which may adversely affect our business.

We have sold MassARRAY systems worldwide to pharmaceutical and biotechnology companies, academic research centers, and government laboratories. Some of our customers use our DNA analysis products to
perform contract research services, or to perform genetics studies on their own disease populations for potential diagnostic and drug target identification in the same or similar manner as we have done. Although there are many potential contract
research services opportunities and disease areas and diagnostic applications, our customers may seek service work or develop diagnostic assays or may target diseases areas that may overlap with those that we have chosen to pursue. In such cases we
may potentially compete against our customers. Competition from our customers may adversely affect our services business or our ability to successfully commercialize diagnostic products.

*If we cannot attract and retain highly-skilled personnel, our growth might not proceed as rapidly as we intend and our business may be adversely affected.

The success of our business will depend on our ability to identify, attract, hire, train, retain, maintain, and motivate highly skilled personnel,
particularly sales, scientific, medical, and technical personnel, for our future success. Competition for



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highly skilled personnel is intense, and we might not succeed in attracting and retaining these employees. If we cannot attract and retain the personnel we require, we would not be able to expand
our business as rapidly as we intend. Our announcements in 2009 of the delay in the launch of the Trisomy 21 test then under development and the results of the investigation by the special committee may have had a negative effect on employee morale
and may have affected our ability to retain and recruit key personnel. When we seek to hire personnel to fill open positions, we may be unable to hire qualified replacements for the positions that we need to fill, and there may be significant costs
associated with the recruiting, hiring and retention of officers and employees for the open positions. If we lose additional key employees, scientists, physician collaborators or if our management team is not able to effectively manage us through
these events, our business, financial condition, and results of operations may be adversely affected. We do not carry key person insurance covering any of our officers or other employees.

*If we do not effectively manage our business as it evolves, it could affect our ability to pursue opportunities and expand our business.

Evolution in our business, particularly our attempted transition to developing and commercializing molecular diagnostic tests, has
placed and may continue to place a significant strain on our personnel, facilities, management systems, information technology infrastructure, disclosure controls, internal controls and resources. We have implemented the remedial measures
recommended by the special committee of our board of directors following its independent investigation, including:



| |  |  | the introduction of a number of standard operating procedures regarding study design planning and review, including clear identification of whether a
study is blinded or unblinded, raw data storage at multiple locations, independent third-party review of blinded clinical data, and a redundancy review of clinical study design by our oversight committee and of blinded clinical data by the science
committee of our board of directors, our clinical group and our biostatistician;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the creation of the science committee to oversee our research and development strategy and activities, including our evaluation of cross-functional
training for personnel in all areas associated with research and development, covering: (i) the proper conduct of test studies, (ii) the proper and timely disclosure of any problems with test studies, and (iii) the proper handling of
data and results of test studies;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the hiring of a full-time biostatistician and engagement of an external consultant on an as needed basis as a clinical biostatistician;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the formalization of the role of our oversight committee and the appointment of project leaders to oversee and manage each of our products in
development;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the amendment of our new hire orientation program, employee handbook and code of business conduct and ethics and enhancement of our training programs
concerning ethics, scientific processes, public disclosures and professional e-mail conduct;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the revision of our policy concerning the storage of clinical samples, including requiring that samples be stored in third-party storage facilities,
bar-coding samples for electronic tracking and auditing, creating formal procedures for obtaining a sample, and limiting access to our sample storage freezer;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the requirement that the known outcomes of all samples to be used in any blinded experiment must be conveyed to the third party storage provider and
are only revealed to us after the results of the blinded experiment have been finalized;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the amendment and restatement of our disclosure committees charter;
| | - |  | --------------------------------------------------------------------



| |  |  | the adoption of a comprehensive new policy on corporate disclosure controls and procedures, a set of disclosure controls and procedures and a corporate
disclosure policy;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the reduction in the number of direct reports to our Chief Executive Officer; and
| | - |  | ---------------------------------------------------------------------------------



| |  |  | the engagement of Q5 Group, Inc. as an external consultant to assist and advise the audit committee in developing an enterprise risk management
process.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------

These remedial measures are designed to prevent the use of inadequate protocols and controls in our clinical
studies and the recurrence of the other errors discovered in the special committees investigation by:



| |  |  | establishing a procedural framework for the conduct of future clinical studies;
| | - |  | -------------------------------------------------------------------------------



| |  |  | inserting internal controls consistent with that framework;
| | - |  | -----------------------------------------------------------



| |  |  | augmenting our companys expertise in conducting clinical studies;
| | - |  | ------------------------------------------------------------------



| |  |  | reinforcing management oversight of the conduct of clinical studies;
| | - |  | --------------------------------------------------------------------



| |  |  | educating employees on the proper conduct of clinical studies and their responsibilities in such activities;
| | - |  | ------------------------------------------------------------------------------------------------------------



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| |  |  | establishing control over the samples used in our clinical studies;
| | - |  | -------------------------------------------------------------------



| |  |  | establishing additional levels of responsibility for the development of new products;
| | - |  | -------------------------------------------------------------------------------------



| |  |  | enhancing our organizational structure to distribute management responsibility appropriately;
| | - |  | ---------------------------------------------------------------------------------------------



| |  |  | reinforcing our disclosure controls and procedures to prevent the dissemination of inadequately vetted information by our company; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------



| |  |  | improving our risk assessment and management in general.
| | - |  | --------------------------------------------------------

While we feel that the remedial measures that we have implemented have made our controls and procedures more effective, any controls and procedures, no matter how well designed and operated, can provide
only reasonable assurance of achieving the desired control objectives and no evaluation of controls and procedures can provide absolute assurance that all control issues have been detected. We will need to continue to improve our operational and
financial systems and managerial controls and procedures and train and manage our workforce and transition our business to execute on the commercialization of molecular diagnostic tests. If we fail to effectively manage the evolution of our business
and the transition to also being a provider of diagnostic products, including the effective implementation these remedial measures and additional changes to our corporate governance policies, protocols and practices, or fail to take other necessary
action to maintain close coordination among our various departments, our ability to execute on our business plan, rebuild credibility, pursue business opportunities, expand our business, and sell our products and applications in new markets may be
adversely affected.

*Certain of our molecular diagnostic tests may not be eligible for reimbursement by payors which may limit the
demand for these tests by physicians and their patients. We may incur additional financial risk related to collections and reimbursement in connection with the commercialization of our molecular diagnostic tests.

In September 2009, Sequenom CMM commercially launched its carrier screening test for cystic fibrosis and in early 2010 it launched its noninvasive Rhesus
D genotyping LDT, and it intends to continue launching additional molecular diagnostic tests in the future. Because these tests have only recently been launched, demand for and reimbursement by payors of these tests is uncertain. Because certain of
the molecular diagnostic tests Sequenom CMM has launched or intends to launch may not be medically necessary or may otherwise not be subject to reimbursement by payors, it is difficult to know how much demand there will be for such tests by
physicians. Sequenom CMM generally bills third-party payors for its test services and pursues case-by-case reimbursement where policies are not in place for a particular test it has very limited experience in billing and pursuing reimbursement and
payment for molecular diagnostic tests. As a result of this lack of experience and uncertainty with respect to reimbursement, Sequenom CMM may also face an increased risk in its collection efforts, including potential write-offs of doubtful accounts
and long collection cycles for accounts receivable related to its testing service, which could adversely affect our business, results of operations and financial condition.

*We must be in compliance with security and privacy regulations under the Health Insurance Portability and Accountability Act of 1996, or HIPAA, and other state regulations, which may increase our
operational costs.

The HIPAA privacy and security regulations establish comprehensive federal standards with respect to the uses and
disclosures of protected health information, or PHI, by health plans and health care providers, in addition to setting standards to protect the confidentiality, integrity and availability of electronic PHI. The regulations establish a complex
regulatory framework on a variety of subjects, including:



| |  |  | the circumstances under which uses and disclosures of PHI are permitted or required without a specific authorization by the patient, including but not
limited to treatment purposes, to obtain payments for services and health care operations activities;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | a patients rights to access, amend and receive an accounting of certain disclosures of PHI;
| | - |  | --------------------------------------------------------------------------------------------



| |  |  | the content of notices of privacy practices for PHI; and
| | - |  | --------------------------------------------------------



| |  |  | administrative, technical and physical safeguards required of entities that use or receive PHI electronically.
| | - |  | --------------------------------------------------------------------------------------------------------------

In September 2009 Sequenom CMM commercially launched its carrier screening test for cystic fibrosis and in early 2010 it launched its
noninvasive Rhesus D genotyping and Fetalxysex
determination LDTs. In August 2010, we announced that Sequenom CMM would no longer offer the Fetalxysex determination test after September 15, 2010. Sequenom CMM intends to continue launching additional diagnostic test services in the future. As Sequenom CMM launches additional commercial
diagnostic tests, they must continue to implement policies and procedures related to compliance with the HIPAA privacy and security regulations, as required by law, which may increase their operational costs. Furthermore, the privacy and security
regulations provide for significant fines and other penalties for wrongful use or disclosure of PHI, including potential civil and criminal fines and penalties. Although the HIPAA statute and regulations do not expressly provide for a private right
of damages, Sequenom CMM also could incur damages under state laws to private parties for the wrongful use or disclosure of confidential health information or other private personal information.



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*We are subject to risks
associated with our foreign operations.

We expect that a significant portion of our sales will continue to be made outside the United
States. Approximately 51% and 55% of our sales were made outside of the United States during the three and nine months ended September 30, 2010, respectively, compared to 43% and 50% for the three and nine months ended September 30, 2009,
respectively. A successful international effort will require us to develop relationships with international customers and collaborators, including distributors. We may not be able to identify, attract, retain, or maintain suitable international
customers or collaborators. Expansion into international markets will require us to establish and grow foreign operations, hire additional personnel to run these operations, and maintain good relations with our foreign customers and collaborators or
distributors. International operations including many of the same risks to our business that affect our domestic operations, but also involve a number of risks not typically present in domestic operations, including:



| |  |  | currency fluctuation risks;
| | - |  | ---------------------------



| |  |  | changes in regulatory requirements;
| | - |  | -----------------------------------



| |  |  | costs and risks of deploying systems in foreign countries;
| | - |  | ----------------------------------------------------------



| |  |  | licenses, tariffs, and other trade barriers;
| | - |  | --------------------------------------------



| |  |  | political and economic instability and possible country-based boycotts;
| | - |  | -----------------------------------------------------------------------



| |  |  | difficulties in staffing and managing foreign operations;
| | - |  | ---------------------------------------------------------



| |  |  | potentially adverse tax consequences;
| | - |  | -------------------------------------



| |  |  | the burden of complying with a wide variety of complex foreign laws and treaties; and
| | - |  | -------------------------------------------------------------------------------------



| |  |  | different rules, regulations, and policies governing intellectual property protection and enforcement.
| | - |  | ------------------------------------------------------------------------------------------------------

Our international operations are also subject to the risks associated with the imposition of legislation and regulations relating to the import or export
of high technology products. We cannot predict whether tariffs or restrictions upon the importation or exportation of our products will be implemented by the United States or other countries.

If our production and laboratory facilities are damaged, our business would be seriously harmed.

Our only production facility for genetic analysis products is located in San Diego, California, where we also have laboratories. We also have laboratory facilities in Grand Rapids, Michigan. Damage to our
facilities due to war, fire, natural disaster, power loss, communications failure, terrorism, unauthorized entry, or other events could prevent us from conducting our business for an indefinite period, could result in a loss of important data or
cause us to cease development and production of our products. We cannot be certain that our limited insurance to protect against business interruption would be adequate or would continue to be available to us on commercially reasonable terms, or at
all.

Responding to claims relating to improper handling, storage or disposal of hazardous chemicals, and radioactive and biological
materials which we use could be time consuming and costly.

We use controlled hazardous and radioactive materials in the conduct of our
business, as well as biological materials that have the potential to transmit disease. The risk of accidental contamination or injury from these materials cannot be completely eliminated. If an accident with these substances occurs, we could be
liable for any damages that result, which could seriously harm our business. Additionally, an accident could damage our research and manufacturing facilities and operations, resulting in delays and increased costs. Such damage and any expense
resulting from delays, disruptions, or any claims may not be covered by our insurance policies.

*We may not have adequate insurance if
we become subject to product liability or other claims.

Our business exposes us to potential product liability and other types of
claims and our exposure will increase as we and Sequenom CMM and our partners and collaborators prepare to commercialize research use only or other molecular tests, including LDTs and diagnostics for prenatal and other applications. We have product
and general liability insurance that covers us against specific product liability and other claims up to an annual aggregate limit of $20.0 million and $2.0 million, respectively. Any claim in excess of our insurance coverage would have to be paid
out of our cash reserves, which would have a detrimental effect on our financial condition. It is difficult to determine whether we have obtained sufficient insurance to cover potential claims. Also, we cannot assure you that we can or will maintain
our insurance policies on commercially acceptable terms, or at all.

The uncertainty of the current economic and political conditions
could harm our revenues and operating results.

Current domestic and global economic conditions are uncertain and have continued to be
volatile over the past year. The recent turmoil in the economic environment in many parts of the world may continue to put pressure on global economic



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conditions. Our revenues and operating results may be affected by uncertain or changing economic and market conditions, including the recent crisis in the credit markets and financial services
industry and general conditions in the global capital markets. If global economic and market conditions, or economic conditions in the United States or other key markets, remain uncertain or persist, spread, or deteriorate further, we may experience
material impacts on our business, operating results, and financial condition.

*Our stock price has been and may continue to be
volatile, and your investment could suffer a decline in value.

The trading price of our common stock has been volatile and could be
subject to wide fluctuations in price in response to various factors, many of which are beyond our control, including but not limited to:



| |  |  | our ability to raise additional capital and continue as a going concern;
| | - |  | ------------------------------------------------------------------------



| |  |  | actual or anticipated variations in quarterly and annual operating results;
| | - |  | ---------------------------------------------------------------------------



| |  |  | announcements regarding technological innovations, intellectual property rights, research and development progress or setbacks, or product launches by
us or our competitors;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our success in entering into, and the success in performing under, licensing and product development and commercialization agreements with others;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our success in and the expenses associated with researching, developing and commercializing diagnostic products, alone or in collaboration with our
partners and obtaining any required regulatory approval for those products and services;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the status of litigation against us and certain of our former executive officers and directors;
| | - |  | -----------------------------------------------------------------------------------------------



| |  |  | the dilution from the issuance of securities in connection with the settlement of litigation;
| | - |  | ---------------------------------------------------------------------------------------------



| |  |  | our ability to successfully implement the remedial measures recommended by the special committee following our independent investigation and the
effectiveness of those measures;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the status, duration, scope and outcome of the investigations by the SEC, the Office of the U.S. Attorney for the Southern District of California and
the FBI;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | securities analysts earnings projections or securities analysts recommendations; and
| | - |  | --------------------------------------------------------------------------------------



| |  |  | general market conditions, including the recent crisis in global financial markets.
| | - |  | -----------------------------------------------------------------------------------

The stock market in general, and The NASDAQ Global Market and the market for life sciences companies in particular, have experienced extreme price and
volume fluctuations that may have been unrelated or disproportionate to the operating performance of the listed companies. There have been dramatic fluctuations in the market prices of securities of biotechnology companies. These price fluctuations
may be rapid and severe and may leave investors little time to react. Broad market and industry factors may seriously harm the market price of our common stock, regardless of our operating performance. Sharp drops in the market price of our common
stock expose us to further securities class-action litigation.



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|Item 6. | Exhibits
|------- | --------



|(a) | Exhibits
|--- | --------



|              |  |                                                                                                                           
|------------- |  | --------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |  | Description of Document                                                                                                   
|3.1 (1)       |  | Restated Certificate of Incorporation of the Registrant.                                                                  
|              | 
|3.2 (2)       |  | Restated Bylaws of Registrant, as amended.                                                                                
|              | 
|3.3 (3)       |  | Registrants Certificate of Designation of Series A Junior Participating Preferred Stock.                                 
|              | 
|4.1 (1)       |  | Specimen common stock certificate.                                                                                        
|              | 
|4.2 (3)       |  | Rights Agreement dated as of March 3, 2009, between the Registrant and American Stock Transfer and Trust Company, LLC.    
|              | 
|4.3 (3)       |  | Form of Right Certificate.                                                                                                
|              | 
|31.1          |  | Certification of Chief Executive Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a).                          
|              | 
|31.2          |  | Certification of Principal Financial Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a).                      
|              | 
|32.1          |  | 18 U.S.C. Section 1350 Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
|              | 
|32.2          |  | 18 U.S.C. Section 1350 Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.



|(1) | Incorporated by reference to the Registrants Current Report on Form 8-K (No. 000-29101) filed June 6, 2006.
|--- | ------------------------------------------------------------------------------------------------------------

|(2) | Incorporated by reference to the Registrants Current Report on Form 8-K (No. 000-29101) filed January 15, 2010.
|--- | ----------------------------------------------------------------------------------------------------------------

|(3) | Incorporated by reference to the Registrants Current Report on Form 8-K (No. 000-29101) filed March 4, 2009
|--- | ------------------------------------------------------------------------------------------------------------

SIGNATURE

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.



|                        |  |  |  |                |  |                        
|----------------------- |  |  |  | -------------- |  | -----------------------
|                        |  |  |  | Sequenom, Inc.
|                        |  |  | 
|Dated: November 4, 2010 |  |  |  | By:            |  | /s/ PAUL V. MAIER      
|                        |  |  |  |                |  | Paul V. Maier          
|                        |  |  |  |                |  | Chief Financial Officer



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