Form 424b5

We are offering 14,000,000 shares of our common stock. Our common stock is quoted on The NASDAQ Global Market under the symbol “SQNM.” On December 1, 2010, the last reported sale price of our common stock on The NASDAQ Global Market was $6.81 per share.

Investing in our common stock involves a high degree of risk. Please read “Risk Factors” beginning on page S-7 of this prospectus supplement and the documents incorporated by reference into this prospectus supplement.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

Delivery of the shares of common stock is expected to be made on or about December 7, 2010. We have granted the underwriters an option for a period of 30 days to purchase up to an additional 2,100,000 shares of our common stock solely to cover overallotments. If the underwriters exercise the option in full, the total underwriting discounts and commissions payable by us will be $5,796,000, and the total proceeds to us, before expenses, will be $90,804,000.

You should rely only on the information contained in or incorporated by reference in this prospectus supplement, the accompanying prospectus and in any free writing prospectus that we have authorized for use in connection with this offering. We have not, and the underwriters have not, authorized anyone to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the underwriters are not, making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus supplement, the accompanying prospectus, the documents incorporated by reference in this prospectus supplement and the accompanying prospectus, and in any free writing prospectus that we have authorized for use in connection with this offering, is accurate only as of the date of those respective documents. Our business, financial condition, results of operations and prospects may have changed since those dates. You should read this prospectus supplement, the accompanying prospectus, the documents incorporated by reference in this prospectus supplement and the accompanying prospectus, and any free writing prospectus that we have authorized for use in connection with this offering, in their entirety before making an investment decision. You should also read and consider the information in the documents to which we have referred you in the sections of this prospectus supplement entitled “Where You Can Find More Information” and “Incorporation of Certain Information by Reference.”

This document is in two parts. The first part is this prospectus supplement, which describes the terms of this offering of common stock and also adds to and updates information contained in the accompanying prospectus and the documents incorporated by reference into this prospectus supplement and the accompanying prospectus. The second part, the accompanying prospectus dated October 5, 2010, including the documents incorporated by reference therein, provides more general information. Generally, when we refer to this prospectus, we are referring to both parts of this document combined. To the extent there is a conflict between the information contained in this prospectus supplement, on the one hand, and the information contained in the accompanying prospectus or in any document incorporated by reference that was filed with the Securities and Exchange Commission, or SEC, before the date of this prospectus supplement, on the other hand, you should rely on the information in this prospectus supplement. If any statement in one of these documents is inconsistent with a statement in another document having a later date—for example, a document incorporated by reference in the accompanying prospectus—the statement in the document having the later date modifies or supersedes the earlier statement.

Unless otherwise mentioned or unless the context requires otherwise, all references in this prospectus supplement to “Sequenom,” “we,” “our” or similar references mean Sequenom, Inc. and its wholly-owned subsidiaries.

SEQUENOM^®, iPLEX^®, and MassARRAY^® are registered trademarks and SEQureDx™, MassCLEAVE™, AttoSense™ and SensiGene™ are trademarks of Sequenom, Inc. This prospectus supplement, the accompanying prospectus and the information incorporated herein and therein by reference may include other trademarks, service marks and trade names owned by us or other companies. All trademarks, service marks and trade names included or incorporated by reference into this prospectus supplement or the accompanying prospectus are the property of their respective owners.

Prospectus Supplement Summary

This summary highlights certain information about us, this offering and selected information contained elsewhere in or incorporated by reference into this prospectus supplement or the accompanying prospectus. This summary is not complete and does not contain all of the information that you should consider before deciding whether to invest in our common stock. For a more complete understanding of our company and this offering, we encourage you to read and consider carefully the more detailed information in this prospectus supplement and the accompanying prospectus, including the information incorporated by reference in this prospectus supplement and the accompanying prospectus, and the information included in any free writing prospectus that we have authorized for use in connection with this offering, including the information referred to under the heading “Risk Factors” in this prospectus supplement beginning on page S-7 and in the documents incorporated by reference into this prospectus supplement.

Company 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.

Molecular Diagnostics and SEQureDx Technology

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 in vitro diagnostic tests using our proprietary MassARRAY system and using nucleic acid sequencing platforms provided by Illumina, Inc. 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 clearance or approval for commercialization of our in vitro diagnostic tests in the United States. To that end, we recently made a pre-investigational device exemption, or pre-IDE, submission to the FDA for an in vitro diagnostic test for the chromosome 21 aneuploidy, or Trisomy 21, and are scheduled to meet with the FDA early in 2011 to discuss our proposed clinical study design.

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 prototype tests for the detection and monitoring of human papillomavirus, or HPV, and other tests. These tests will require further development, 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, which operates a laboratory located in Grand Rapids, Michigan, that is accredited by the College of American Pathology, or CAP, and compliant with the certification requirements for high complexity testing 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. Sequenom CMM has validated and offers to physicians two LDTs, the SensiGene Rhesus D fetal genotyping test and a DNA-based cystic fibrosis adult carrier screening test. Patient samples are collected by physicians and submitted to Sequenom CMM for testing and the results are reported back to the ordering physician.

Sequenom CMM has established an additional laboratory in San Diego, California that complies with the California Department of Public Health Title 17 California Code of Regulations applicable regulations for clinical laboratories. A California clinical laboratory license was issued by the state to the San Diego laboratory on October 26, 2010. A federal CLIA certification has been paid for by the laboratory and a license number has been issued by the Centers for Medicare and Medicaid Services and the laboratory is awaiting delivery of its federal CLIA certificate. We anticipate that Sequenom CMM’s San Diego laboratory will be used principally for the Trisomy 21 LDT currently under development by Sequenom CMM. 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 Sequenom CMM’s 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 Trisomy 21 by analyzing DNA extracted from maternal blood samples utilizing massively parallel sequencing. With technological advances and projected instrument and reagent costs of massively parallel sequencing declining rapidly, Sequenom CMM believes that a Trisomy 21 LDT on a massively parallel sequencing platform is commercially feasible and potentially attractive compared to other platforms. The goal is to design a noninvasive test that has high specificity and sensitivity compared to currently available serum biochemical 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 can be no assurance that Sequenom CMM will be able to achieve any of these objectives.

In November 2010, we presented the results from a pilot 96 patient-study of a Trisomy 21 test using massively parallel sequencing at a meeting of the American Society of Human Genetics. Based on the results of this small study, Sequenom CMM started and completed a larger study that analyzed 480 patient samples collected from pregnant women at increased risk for fetal Trisomy 21. A manuscript describing the results from this larger laboratory verification study has been submitted to a peer-reviewed journal for publication. As of the date of this prospectus supplement, the manuscript was still being considered by the journal’s editors. There can be no assurance that the paper will be accepted for publication or that if published the paper or the results from the 480 sample study will be viewed favorably by clinicians, patients or investors. Even if the results from this study were to be viewed favorably initially, such results may not be repeated in later studies.

Based on the results from these two studies, we are preparing to undertake the next major step in the Trisomy 21 LDT development plan, a large pivotal clinical validation study. In this study, Sequenom CMM will test patient samples that have been collected under an institutional review board-approved clinical study conducted under the auspices of the Women and Infants Hospital in Rhode Island. We anticipate that the total number of patient samples in the clinical validation study will be approximately 2,000, of which approximately 200 will be positive for Trisomy 21 based on clinical diagnosis from chorionic villus sampling or amniocentesis, with targets of 100 positive samples in each of the first and second trimesters of pregnancy. Sequenom CMM will use the same assay process as was used in the 480 sample study and Illumina’s HiSeq 2000 sequencer, which was recently introduced and offers the potential for greater sample throughput than can be achieved with the sequencer that Sequenom CMM used in the 96 and 480 sample studies. Sequenom CMM scientists are currently in the process of running equivalency studies on the HiSeq 2000 platform in preparation for the clinical validation study. We anticipate that Sequenom CMM will complete the clinical validation study by the end of the second quarter of 2011. Sequenom CMM is planning to launch the Trisomy 21 LDT by the end of 2011, after the publication of the clinical validation study results by our academic collaborators. There can be no assurance that Sequenom CMM will be able to successfully develop an LDT for Trisomy 21 or that any such LDT would be successfully commercialized.

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 and in vitro diagnostic tests, in conjunction with various types of technology platforms.

FDA Oversight of LDTs

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 FDA 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 issued letters to a number of companies in mid-2010 that primarily related to direct-to-consumer genetic testing. 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 commercialization 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

Isis License Agreement

We have exclusively in-licensed from Isis patent rights (including U.S. Patent No. 6,258,540 and its foreign equivalents) to use ccff nucleic acids for diagnostic testing of serum and plasma samples obtained from pregnant women. These exclusive license rights, which are platform independent and not limited to mass spectrometry, cover the general diagnostic use of ccff nucleic acids in territories that include the United States, Canada, Europe, Japan, Australia, and Hong Kong.

Subject to the license rights granted under the agreement with Isis, 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 products developed or produced using the licensed patent rights, including specified minimum royalty amounts, and milestone payments upon commercial events with respect to products for particular indications.

The agreement with Isis 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 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 agreement. We may terminate the agreement for any reason with six 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.

CUHK License Agreement

We have also exclusively in-licensed patent rights from the Chinese University of Hong Kong, or CUHK, which cover the use of cell-free fetal nucleic acids from biological samples, including plasma, serum, whole blood and urine, for prenatal diagnostic testing by massively parallel sequencing. These exclusive license rights include pending United States patent application publication no. US2009/0029377A1, and its pending foreign equivalents in Australia, Brazil, Canada, China, Eurasia, Europe, Israel, India, Japan, Korea, Mexico, New Zealand, Singapore and South Africa. Certain of our license rights, which are unrelated to prenatal diagnostic testing by massively parallel sequencing, are non-exclusive.

Under our license agreement with CUHK, CUHK maintains the right to use and develop any of the licensed technology solely for academic, research and publication purposes, and with respect to one of the licensed patent applications, reserves the right to use the licensed application in accordance with its agreement with the Government of the Special Administration Region of Hong Kong. In addition, CUHK has the right to grant to the Commissioner for Innovation and Technology, a non-exclusive, world-wide license to certain of our in-licensed patent rights, which do not relate to prenatal diagnostic testing by massively parallel sequencing.

Under the agreement with CUHK, we paid an upfront license fee to CUHK and are required to make milestone payments upon commercial and regulatory events achieved with respect to products developed or produced using the licensed patent rights and to pay royalties on net sales of such products, including specified minimum royalty amounts. Subject to certain limited circumstances, to maintain our licensed rights under the agreement we are required to assume the financial responsibility for the prosecution, defense and maintenance of all licensed patent applications and patents and are required to provide CUHK with reasonable assistance for the prosecution, defense and maintenance of all licensed patent applications and patents at the request of CUHK.

The agreement with CUHK requires us to use all reasonable efforts and diligence to exploit the licensed patent rights and to proceed with the development, manufacture and sale of products developed or produced using the licensed patent rights, and to diligently develop markets for such products. Under the terms of the agreement, we have agreed to indemnify CUHK from all losses incurred by CUHK relating to our manufacture, use, sale or any other dealing with respect to products developed or produced using the licensed patent rights. CUHK has agreed to indemnify us from all losses incurred as a result of breaches of CUHK’s representations and warranties under the agreement, subject to a cap of two times the aggregate payments received by CUHK from us at the time of such breach.

The agreement with CUHK will remain effective until the later of the life of any patent issued covering the licensed technology or September 16, 2028, subject to earlier termination by either party upon an uncured material breach. CUHK may terminate the agreement if we go into liquidation or if a receiver is appointed for our assets or if we fail to make any payment as provided in the agreement or if we assign or transfer any rights under the agreement in violation of its terms or in the event of our cessation of our business relating to the commercialization of the licensed technology. If we sublicense our rights under the agreement and our sublicensee fails to pay us as required under such sublicense agreement and as a result we fail to make requisite payments to CUHK within 30 days, CUHK may terminate our agreement.

We may terminate the agreement with CUHK for any reason with 30 days’ advance written notice. In the event we fail to achieve certain commercial milestone requirements with respect to products developed or produced using the licensed patent rights, CUHK may terminate the licensed patent rights with respect to such specific milestone.

Under the terms of the license agreement and other agreements with CUHK, we have rights in improvements to licensed technology when such improvements are based upon and claim priority to existing patent applications that have been licensed by us. We also have a sole and exclusive option to obtain an exclusive license to research results generated by specific CUHK inventors, using a sequencing platform purchased by us for CUHK’s use, and which relate to massively parallel genomic sequencing to discover and analyze plasma, serum, blood or other bodily fluid-based markers for prenatal diagnosis, prenatal prognostication, construction of a whole genome genetic map or complete genomic sequencing of the fetus or other prenatal analysis, cancer detection, cancer prognostication, or other analysis for the screening and management of cancer.

Other Agreements

We have also exclusively in-licensed patent rights from Xenomics Inc. (now known as TrovaGene, Inc.), covering the general use, on any technology platform, of fetal nucleic acids derived from maternal urine for noninvasive prenatal genetic diagnostic testing.

We also hold exclusive rights to issued patents and pending patent applications providing fundamental patent rights for digital polymerase chain reaction, or 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, amniotic fluid, 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.

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, which had developed a CLIA validated test for Rhesus D blood incompatibility using real-time PCR. In December 2007, Lenetix received New York State approval of a noninvasive prenatal LDT performed on a real-time 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 licensed technology and the work performed under the agreement. Commercialization of the LDT by Lenetix commenced in January 2008. We have not derived to date and do not expect to derive significant revenues from our agreement with Lenetix, which will expire in January 2011.

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 research use only 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 research 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 research use 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 research use only iPLEX multiplexing assay, which permits multiplexed SNP and somatic mutation analysis. In April 2010 we announced the launch of our next-generation research use only mass spectrometry system, 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.

Company Information

We incorporated in the State of Delaware in 1994. Our principal executive offices are located at 3595 John Hopkins Court, San Diego, California, 92121, and our telephone number at that address is (858) 202-9000. Our website address is http://www.sequenom.com. The information contained on, or accessible through, our website is not incorporated by reference into and does not form a part of this prospectus.

The Offering


Common stock offered by us			14,000,000 shares

Common stock to be outstanding immediately after this offering			90,324,792 shares

Over-allotment Option

We have granted the underwriters an option to purchase up to 2,100,000 additional shares of our common stock to cover over-allotments, if any. This option is exercisable, in whole or in part, for a period of 30 days from the date of this prospectus supplement.

Use of Proceeds

NASDAQ Global Market Listing

Our common stock is listed on The NASDAQ Global Market under the symbol “SQNM.”

Risk Factors

Investing in our common stock involves a high degree of risk. See “Risk Factors” beginning on page S-7 of this prospectus supplement, page 7 of the accompanying prospectus and in the documents incorporated by reference into this prospectus supplement.

Outstanding Shares

The number of shares of our common stock to be outstanding immediately after this offering is based on 76,324,792 shares outstanding as of September 30, 2010, and exclude as of that date:

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6,102,557 shares of common stock issuable upon the exercise of outstanding stock options under our equity incentive plans, with a weighted average exercise price of $8.51 per share;

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2,427,933 shares of common stock available for future grants under our equity incentive plans;

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901,520 shares of common stock available for issuance under our employee stock purchase plan;

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150,000 shares of common stock available for issuance under our new hire equity incentive plan;

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1,136,490 shares of common stock issuable upon vesting of outstanding restricted stock units and restricted stock awards;

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59,035 shares of common stock issuable upon the exercise of outstanding warrants, with a weighted average exercise price of $3.86 per share; and

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6,407,738 shares of common stock issuable in connection with the previously disclosed settlement of our securities class action lawsuit.

Except as otherwise indicated, all information in the prospectus supplement assumes no exercise by the underwriters of their overallotment option.

An investment in our common stock involves a high degree of risk. Before deciding whether to invest in our common stock, you should consider carefully the risks described below, together with other information in this prospectus supplement, the accompanying prospectus, the information and documents incorporated by reference and any free writing prospectus that we have authorized for use in connection with this offering. If any of these risks actually occurs, our business, financial condition, results of operations or cash flow could be seriously harmed. This could cause the trading price of our common stock to decline, resulting in a loss of all or part of your investment.

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.

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. The shares of common stock being offered under this prospectus supplement and the accompanying prospectus are being offered pursuant to this registration statement. This registration statement was declared effective by the SEC on October 5, 2010, and 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, including any shares of our common stock sold in this offering, 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.

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 the 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 caption In 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.

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.

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:

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 previously 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:

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

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 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:

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:

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.

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 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.

We intend to publish results of certain of our studies, including studies of our Trisomy 21 LDT currently under development, and there can be no assurance that such results will be viewed favorably by clinicians, patients or investors when published. In addition, our scientific collaborators and other third parties may also publish results relating to their own studies, such as our scientific collaborators’ studies of the use of massively parallel sequencing to detect aneuploidies. There can be no assurance that the results of their studies when published will be viewed favorably. If such results are not viewed favorably after publication, it could have a negative impact on the perception of our technology and prospects. Additionally, there can be no assurance that the results of others’ studies are indicative of our own future study results or of our ability to develop and commercialize noninvasive molecular diagnostic tests.

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:

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, and our license agreement with the Chinese University of Hong Kong) or non-exclusive license rights to intellectual property that are required to commercialize 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 or lose priority to other patents, which could adversely affect our ability to successfully commercialize any of our diagnostic products that are dependent upon such patents. 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. If we do not prevail in any such proceeding, the prevailing party may obtain superior rights to our claimed inventions and technology, which could adversely affect our ability to successfully commercialize the Trisomy 21 test under development.

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. If we are not successful in these activities, the prevailing party may obtain superior rights to our claimed inventions and technology, which could adversely affect our ability to successfully commercialize any of our diagnostic products that are dependent upon such technologies. 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, which we launched in April 2010), 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.

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 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 harmed. Achieving market 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, which we launched in April 2010, 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:

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.

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 our SEC filings, 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.

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:

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:

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 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:

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:

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:

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 Fetal ^xysex determination LDTs. In August 2010, we announced that Sequenom CMM would no longer offer the Fetal ^xysex 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.

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:

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 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:

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.

Management will have broad discretion as to the use of the proceeds from this offering, and we may not use the proceeds effectively.

Our management will have broad discretion in the application of the net proceeds from this offering and could spend the proceeds in ways that do not improve our results of operations or enhance the value of our common stock. Our failure to apply these funds effectively could have a material adverse effect on our business, delay the development of our product candidates and cause the price of our common stock to decline.

If you purchase the common stock sold in this offering, you will experience immediate and substantial dilution in your investment. You will experience further dilution if we issue additional equity securities in future fundraising transactions.

Since the price per share of our common stock being offered is substantially higher than the net tangible book value per share of our common stock, you will suffer substantial dilution with respect to the net tangible book value of the common stock you purchase in this offering. Based on the public offering price of $6.00 per share and our net tangible book value as of September 30, 2010, if you purchase shares of common stock in this offering, you will suffer immediate and substantial dilution of $4.94 per share with respect to the net tangible book value of the common stock. See the section entitled “Dilution” for a more detailed discussion of the dilution you will incur if you purchase common stock in this offering.

In addition, we have a significant number of stock options and warrants outstanding. To the extent that outstanding stock options or warrants have been or may be exercised or other shares issued, investors purchasing our common stock in this offering may experience further dilution. In addition, we may choose to raise additional capital due to market conditions or strategic considerations even if we believe we have sufficient funds for our current or future operating plans. To the extent that additional capital is raised through the sale of equity or convertible debt securities, the issuance of these securities could result in further dilution to our stockholders or result in downward pressure on the price of our common stock.

This prospectus supplement, the accompanying prospectus, the documents we have filed with the SEC that are incorporated by reference and any free writing prospectus that we have authorized for use in connection with this offering contain “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. These statements relate to future events or to our future operating or financial performance and involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements to be materially different from any future results, performances or achievements expressed or implied by the forward-looking statements. Forward-looking statements may include, but are not limited to, statements about:

These forward-looking statements can generally be identified as such because the context of the statements will include words such as “anticipates,” “believes,” “can,” “continue,” “could,” “estimates,” “expects,” “intends,” “may,” “plans,” “potential,” “predicts,” “projects,” “should,” “will,” “would,” and the negative of these words or similar words. These statements reflect our current views with respect to future events and are based on assumptions and subject to risks and uncertainties. Given these uncertainties, you should not place undue reliance on these forward-looking statements. We discuss many of these risks in greater detail under the heading “Risk Factors” beginning on page S-7 of this prospectus supplement and in the documents incorporated by reference into this prospectus supplement. Also, these forward-looking statements represent our estimates and assumptions only as of the date of the document containing the applicable statement.

You should read this prospectus supplement, the accompanying prospectus, the documents incorporated by reference in this prospectus supplement and any free writing prospectus that we have authorized for use in connection with this offering completely and with the understanding that our actual future results may be materially different from what we expect. We qualify all of the forward-looking statements in the foregoing documents by these cautionary statements.

You should rely only on the information contained, or incorporated by reference, in this prospectus supplement, the accompanying prospectus and any free writing prospectus that we have authorized for use in connection with this offering. We and the underwriters for this offering have not authorized anyone to provide you with different information. The common stock offered under this prospectus supplement and the accompanying prospectus is not being offered in any state or other jurisdiction where the offer is not permitted. You should not assume that the information contained in this prospectus supplement or the accompanying prospectus is accurate as of any date other than the date on the front of this prospectus supplement or the accompanying prospectus, as applicable, or that any information incorporated by reference in this prospectus supplement or the accompanying prospectus is accurate as of any date other than the date of the document so incorporated by reference. Unless required by law, we undertake no obligation to update or revise any forward-looking statements to reflect new information or future events or developments. Thus, you should not assume that our silence over time means that actual events are bearing out as expressed or implied in such forward-looking statements.

We estimate that the net proceeds from the sale of the 14,000,000 shares of common stock that we are offering will be approximately $78.6 million, or approximately $90.5 million if the underwriters exercise in full their option to purchase up to 2,100,000 additional shares of common stock, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us.

We intend to use the net proceeds from this offering for general corporate purposes, which may include research and development expenses, such as expenses related to our validation studies for our Trisomy 21 test, capital expenditures, working capital, and general administrative expenses. We may also use a portion of the net proceeds to acquire or invest in complementary businesses, products and technologies. Although we have no specific agreements, commitments or understandings with respect to any acquisition, we evaluate acquisition opportunities and engage in related discussions with other companies from time to time.

The amounts and timing of these expenditures will depend on a number of factors, such as the timing and progress of our research and development efforts, the timing and progress of any partnering efforts, technological advances and the competitive environment for our product candidates. As of the date of this prospectus supplement, we cannot specify with certainty all of the particular uses for the net proceeds to us from this offering. Accordingly, our management will have broad discretion in the application of these proceeds. Pending application of the net proceeds as described above, we intend to temporarily invest the proceeds in short term, interest-bearing instruments.

To date, we have paid no cash dividends to our stockholders, and we do not intend to pay cash dividends in the foreseeable future.

Our net tangible book value as of September 30, 2010 was approximately $17.1 million, or $0.22 per share. Net tangible book value per share is determined by dividing our total tangible assets, less total liabilities, by the number of shares of our common stock outstanding as of September 30, 2010. Dilution with respect to net tangible book value per share represents the difference between the amount per share paid by purchasers of shares of common stock in this public offering and the net tangible book value per share of our common stock immediately after this public offering.

After giving effect to the sale of 14,000,000 shares of our common stock in this offering at the public offering price of $6.00 per share and after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us, our as adjusted net tangible book value as of September 30, 2010 would have been approximately $95.7 million, or $1.06 share. This represents an immediate increase in net tangible book value of $0.84 per share to existing stockholders and immediate dilution in net tangible book value of $4.94 per share to investors purchasing our common stock in this offering at the public offering price. The following table illustrates this dilution on a per share basis:

If the underwriters exercise in full their option to purchase up to 2,100,000 additional shares of common stock at the public offering price of $6.00 per share, the as adjusted net tangible book value after this offering would have been $1.16 per share, representing an increase in net tangible book value of $0.94 per share to existing stockholders and immediate dilution in net tangible book value of $4.84 per share to investors purchasing our common stock in this offering at the public offering price.

The above discussion and table are based on 76,324,792 shares outstanding as of September 30, 2010, and exclude as of that date:

To the extent that options or warrants outstanding as of September 30, 2010 have been or may be exercised or other shares issued, investors purchasing our common stock in this offering may experience further dilution. In addition, we may choose to raise additional capital due to market conditions or strategic considerations even if we believe we have sufficient funds for our current or future operating plans. To the extent that additional capital is raised through the sale of equity or convertible debt securities, the issuance of these securities could result in further dilution to our stockholders.

Subject to the terms and conditions set forth in the underwriting agreement dated December 2, 2010, between us and Jefferies & Company, Inc., Lazard Capital Markets LLC and Piper Jaffray & Co., as underwriters, we have agreed to sell to the underwriters and the underwriters have severally agreed to purchase from us the number of shares of common stock indicated in the table below:

Jefferies & Company, Inc. is acting as sole book-running manager of this offering and as representative of the underwriters named above.

The underwriting agreement provides that the obligations of the several underwriters are subject to certain conditions precedent such as the receipt by the underwriters of officers’ certificates and legal opinions and approval of certain legal matters by their counsel. The underwriting agreement provides that the underwriters will purchase all of the shares if any of them are purchased, except as described below under “Option to Purchase Additional Shares.” If an underwriter defaults, the underwriting agreement provides that the purchase commitments of the nondefaulting underwriters may be increased or the underwriting agreement may be terminated. We have agreed to indemnify the underwriters and certain of their controlling persons against certain liabilities, including liabilities under the Securities Act, and to contribute to payments that the underwriters may be required to make in respect of those liabilities.

The underwriters have advised us that they currently intend to make a market in the shares. However, the underwriters are not obligated to do so and may discontinue any market-making activities at any time without notice. No assurance can be given as to the liquidity of the trading market for the shares.

The underwriters are offering the shares subject to their acceptance of the shares from us and subject to prior sale. The underwriters reserve the right to withdraw, cancel or modify offers to the public and to reject orders in whole or in part.

The underwriters have advised us that they propose to offer the shares of common stock to the public at the public offering price set forth on the cover page of this prospectus supplement and to certain dealers at that price less a concession not in excess of $0.216 per share. After the offering, the public offering price and concession to dealers may be reduced by the representative. No such reduction will change the amount of proceeds to be received by us as set forth on the cover page of this prospectus supplement.

The following table shows the public offering price, the underwriting discounts and commissions that we are to pay the underwriters and the proceeds, before expenses, to us in connection with this offering. Such amounts are shown assuming both no exercise and full exercise of the underwriters’ option to purchase additional shares.

We estimate expenses payable by us in connection with this offering, other than the underwriting discounts and commissions referred to above, will be approximately $312,000.

Our shares are listed on The NASDAQ Global Market under the trading symbol “SQNM”.

We have granted to the underwriters an option, exercisable for 30 days from the date of this prospectus supplement, to purchase up to an aggregate of 2,100,000 additional shares of common stock at the public offering price set forth on the cover page of this prospectus supplement, less underwriting discounts and commissions. If the underwriters exercise this option, each underwriter will be obligated, subject to specified conditions, to purchase a number of additional shares proportionate to that underwriter’s initial purchase commitment as indicated in the table above. This option may be exercised only if the underwriters sell more shares than the total number set forth on the cover page of this prospectus supplement.

We and each of our executive officers and directors have agreed, subject to specified exceptions, not to directly or indirectly:

The restrictions above do not apply to our issuance of up to 6,800,000 shares of our common stock in the aggregate issuable in connection with the previously disclosed settlement of our securities class action lawsuit.

These restrictions terminate after the close of trading of the shares of common stock on and including the 90 days after the date of this prospectus supplement. However, subject to certain exceptions, in the event that either:

then in either case the expiration of the 90-day restricted period will be extended until the expiration of the 18-day period beginning on the date of the issuance of an earnings release or the occurrence of the material news or event, as applicable, unless Jefferies & Company, Inc. waives, in writing, such an extension.

Jefferies & Company, Inc. may, in its sole discretion and at any time or from time to time before the termination of the 90-day period, without public notice, release all or any portion of the securities subject to lock-up agreements. There are no existing agreements between the underwriters and any of our stockholders who will execute a lock-up agreement, providing consent to the sale of shares prior to the expiration of the lock-up period.

The underwriters have advised us that, pursuant to Regulation M under the Securities Exchange Act of 1934, as amended, certain persons participating in the offering may engage in transactions, including overallotment, stabilizing bids, syndicate covering transactions or the imposition of penalty bids, which may have the effect of stabilizing or maintaining the market price of our common stock at a level above that which might otherwise prevail in the open

market. Overallotment involves syndicate sales in excess of the offering size, which creates a syndicate short position. “Covered” short sales are sales made in an amount not greater than the underwriters’ option to purchase additional shares of common stock in this offering. The underwriters may close out any covered short position by either exercising their option to purchase additional shares of common stock or purchasing shares of common stock in the open market. In determining the source of shares to close out the covered short position, the underwriters will consider, among other things, the price of shares available for purchase in the open market as compared to the price at which they may purchase shares through the option to purchase additional shares. “Naked” short sales are sales in excess of the option to purchase additional shares of common stock. The underwriters must close out any naked short position by purchasing shares in the open market. A naked short position is more likely to be created if the underwriters are concerned that there may be downward pressure on the price of the shares of common stock in the open market after pricing that could adversely affect investors who purchase in this offering. A stabilizing bid is a bid for the purchase of shares of common stock on behalf of the underwriters for the purpose of fixing or maintaining the price of the shares of common stock. A syndicate covering transaction is the bid for or the purchase of shares of common stock on behalf of the underwriters to reduce a short position incurred by the underwriters in connection with the offering. A penalty bid is an arrangement permitting the underwriters to reclaim the selling concession otherwise accruing to a syndicate member in connection with the offering if the shares of common stock originally sold by such syndicate member are purchased in a syndicate covering transaction and therefore have not been effectively placed by such syndicate member. Neither we nor any of the underwriters makes any representation or prediction as to the direction or magnitude of any effect that the transactions described above may have on the price of our common stock. The underwriters are not obligated to engage in these activities and, if commenced, any of the activities may be discontinued at any time.

This prospectus supplement and the accompanying prospectus in electronic format may be made available by e-mail or on the web sites or through online services maintained by one or more of the underwriters or their affiliates. In those cases, prospective investors may view offering terms online and may be allowed to place orders online. The underwriters may agree with us to allocate a specific number of shares of common stock for sale to online brokerage account holders. Any such allocation for online distributions will be made by the underwriters on the same basis as other allocations. Other than this prospectus supplement and the accompanying prospectus in electronic format, the information on the underwriters’ web sites and any information contained in any other web site maintained by any of the underwriters is not part of this prospectus supplement or the accompanying prospectus, has not been approved and/or endorsed by us or the underwriters and should not be relied upon by investors.

The underwriters and certain of their affiliates are full service financial institutions engaged in various activities, which may include securities trading, commercial and investment banking, financial advisory, investment management, investment research, principal investment, hedging, financing and brokerage activities. The underwriters and certain of their affiliates have, from time to time, performed, and may in the future perform, various financial advisory and investment banking services for us, for which they received or will receive customary fees and expenses.

In the ordinary course of their various business activities, the underwriters and certain of their affiliates may make or hold a broad array of investments and actively trade debt and equity securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers, and such investment and securities activities may involve our securities and/or instruments. The underwriters and certain of their affiliates may also make investment recommendations and/or publish or express independent research views in respect of such securities or instruments and may at any time hold, or recommend to clients that they acquire, long and/or short positions in such securities and instruments.

In relation to each Member State of the European Economic Area which has implemented the Prospectus Directive (as defined below) (each, a Relevant Member State), with effect from and including the date on which the Prospectus Directive is implemented in that Relevant Member State, or the Relevant Implementation Date, an offer of our common stock to the public may not be made in that Relevant Member State prior to the publication of a prospectus in relation to our common stock which has been approved by the competent authority in that Relevant Member State or, where appropriate, approved in another Relevant Member State and notified to the competent authority in that Relevant Member State, all in accordance with the Prospectus Directive, except that an offer to the public in that Relevant Member State of any shares of our common stock may be made at any time under the following exemptions under the Prospectus Directive if they have been implemented in the Relevant Member State:

provided that no such offer of our common stock shall result in a requirement for the publication by us or any underwriter of a prospectus pursuant to Article 3 of the Prospectus Directive.

For the purposes of this provision, the expression an “offer of our common stock to the public” in relation to any shares of our common stock in any Relevant Member State means the communication in any form and by any means of sufficient information on the terms of the offer and our common stock to be offered so as to enable an investor to decide to purchase or subscribe for our common stock, as the same may be varied in that Member State by any measure implementing the Prospectus Directive in that Member State and the expression “Prospectus Directive” means Directive 2003/71/EC and includes any relevant implementing measure in each Relevant Member State.

Shares of our common stock may not be offered or sold and will not be offered or sold to any persons in the United Kingdom other than to persons whose ordinary activities involve them acquiring, holding, managing or disposing of investments (as principal or as agent) for the purposes of their businesses or otherwise in circumstances which have not resulted or will not result in an offer to the public in the United Kingdom within the meaning of the Financial Services and Markets Act 2000, or the FSMA.

In addition, any invitation or inducement to engage in investment activity (within the meaning of section 21 of the FSMA) in connection with the issue or sale of shares of our common stock may only be communicated or caused to be communicated in circumstances in which Section 21(1) of the FSMA does not apply to us. Without limitation to the other restrictions referred to herein, this prospectus supplement and the accompanying prospectus are directed only at (1) persons outside the United Kingdom or (2) persons who:

Without limitation to the other restrictions referred to herein, any investment or investment activity to which this prospectus supplement and the accompanying prospectus relate is available only to, and will be engaged in only with, such persons, and persons within the United Kingdom who receive this communication (other than persons who fall within (2) above) should not rely or act upon this communication.

This prospectus supplement and the accompanying prospectus have not been and will not be filed with or cleared by the Italian securities exchange commission (Commissione Nazionale per le societa e la Borsa—the “CONSOB”) pursuant to Legislative Decree No. 58 of 24 February 1998 (as amended, the “Finance Law”) and to CONSOB Regulation No. 11971 of 14 May 1999 (as amended, the “Issuers Regulation”). Accordingly, copies of this prospectus supplement and the accompanying prospectus or any other document relating to our common stock may not be distributed, made available or advertised in Italy, nor may our common stock be offered, purchased, sold, promoted, advertised or delivered, directly or indirectly, to the public other than (i) to Professional Investors (such being the persons and entities as defined pursuant to article 31(2) of CONSOB Regulation No. 11522 of 1 July 1998, as amended, the Intermediaries Regulation) pursuant to article 100 of the Finance Law; (ii) to prospective investors where the offer of our common stock relies on the exemption from the investment solicitation rules pursuant to, and in compliance with, the conditions set out by article 100 of the Finance Law and article 33 of the Issuers Regulation, or by any applicable exemption; provided that any such offer, sale, promotion, advertising or delivery of our common stock or distribution of this prospectus supplement and the accompanying prospectus, or any part thereof, or of any other document or material relating to our common stock in Italy is made: (a) by investment firms, banks or financial intermediaries authorized to carry out such activities in the Republic of Italy in accordance with the Finance Law, the Issuers Regulation, Legislative Decree No. 385 of 1 September 1993 (as amended, the “Banking Law”), the Intermediaries Regulation, and any other applicable laws and regulations; and (b) in compliance with any applicable notification requirement or duty which may, from time to time, be imposed by CONSOB, Bank of Italy or by any other competent authority.

Any offer or solicitation of securities within Germany must be in full compliance with the German Securities Prospectus Act (Wertpapierprospektgesetz — WpPG). The offer and solicitation of securities to the public in Germany requires the publication of a prospectus that has to be filed with and approved by the German Federal Financial Services Supervisory Authority (Bundesanstalt für Finanzdienstleistungsaufsicht — BaFin). This prospectus supplement and the accompanying prospectus have not been and will not be submitted for filing and approval to the BaFin and, consequently, will not be published. Therefore, this prospectus supplement and the accompanying prospectus do not constitute a public offer under the German Securities Prospectus Act (Wertpapierprospektgesetz). This prospectus supplement, the accompanying prospectus and any other document relating to our common stock, as well as any information contained therein, must therefore not be supplied to the public in Germany or used in connection with any offer for subscription of our common stock to the public in Germany, any public marketing of our common stock or any public solicitation for offers to subscribe for or otherwise acquire our common stock. This prospectus supplement, the accompanying prospectus and other offering materials relating to the offer of our common stock are strictly confidential and may not be distributed to any person or entity other than the designated recipients hereof.

This prospectus has not been prepared in the context of a public offering of financial securities in France within the meaning of Article L.411-1 of the French Code Monétaire et Financier and Title I of Book II of the Règlement Général of the Autorité des marchés financiers (the “AMF”) and therefore has not been and will not be filed with the AMF for prior approval or submitted for clearance to the AMF. Consequently, the shares of our common stock may not be, directly or indirectly, offered or sold to the public in France and offers and sales of the shares of our common stock may only be made in France to qualified investors (investisseurs qualifiés) acting for their own, as defined in and in accordance with Articles L.411-2 and D.411-1 to D.411-4, D.734-1, D.744-1, D.754-1 and D.764-1 of the French Code Monétaire et Financier. Neither this prospectus nor any other offering material may be released, issued or distributed to the public in France or used in connection with any offer for subscription on sale of the shares of our

common stock to the public in France. The subsequent direct or indirect retransfer of the shares of our common stock to the public in France may only be made in compliance with Articles L.411-1, L.411-2, L.412-1 and L.621-8 through L.621-8-3 of the French Code Monétaire et Financier.

This is not a prospectus under, and has not been prepared in accordance with the prospectus requirements provided for in, the Swedish Financial Instruments Trading Act [lagen (1991:980) om handel med finasiella instrument] nor any other Swedish enactment. Neither the Swedish Financial Supervisory Authority nor any other Swedish public body has examined, approved, or registered this document.

The validity of the common stock offered by this prospectus supplement and the accompanying prospectus will be passed upon for us by Cooley LLP, San Diego, California. Latham & Watkins LLP, San Diego, California, is counsel for the underwriters in connection with this offering.

Ernst & Young LLP, independent registered public accounting firm, has audited our consolidated financial statements and schedule included in our Annual Report on Form 10-K for the year ended December 31, 2009, and the effectiveness of our internal control over financial reporting as of December 31, 2009, as set forth in their reports (which contain an explanatory paragraph describing conditions that raise substantial doubt about our ability to continue as a going concern as described in Note 2 to the consolidated financial statements), which are incorporated by reference in this prospectus supplement and elsewhere in the registration statement. Our financial statements and schedule are incorporated by reference in reliance on Ernst & Young LLP’s report, given on their authority as experts in accounting and auditing.

This prospectus supplement and the accompanying prospectus are part of the registration statement on Form S-3 we filed with the SEC under the Securities Act and do not contain all the information set forth in the registration statement. Whenever a reference is made in this prospectus supplement or the accompanying prospectus to any of our contracts, agreements or other documents, the reference may not be complete and you should refer to the exhibits that are a part of the registration statement or the exhibits to the reports or other documents incorporated by reference in this prospectus supplement and the accompanying prospectus for a copy of such contract, agreement or other document. Because we are subject to the information and reporting requirements of the Exchange Act, we file annual, quarterly and current reports, proxy statements and other information with the SEC. Our SEC filings are available to the public over the Internet at the SEC’s website at http://www.sec.gov. You may also read and copy any document we file at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the operation of the Public Reference Room.

The SEC allows us to “incorporate by reference” information from other documents that we file with them, which means that we can disclose important information to you by referring you to those documents. The information incorporated by reference is considered to be part of this prospectus supplement and the accompanying prospectus. Information contained in this prospectus supplement and the accompanying prospectus and information that we file with the SEC in the future and incorporate by reference in this prospectus supplement and the accompanying prospectus will automatically update and supersede this information. We incorporate by reference the documents listed below and any future filings (other than Current Reports on Form 8-K furnished under Item 2.02 or Item 7.01 and exhibits filed on such form that are related to such items) we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of the prospectus supplement and before the sale of all the securities covered by this prospectus supplement:

You can request a copy of these filings, at no cost, by writing or telephoning us at the following address or telephone number:

We may, from time to time, offer to sell up to $150,000,000 of any combination of the securities described in this prospectus, either individually or in units, at prices and on terms described in one or more supplements to this prospectus. We may also offer common stock or preferred stock upon conversion of debt securities, common stock upon conversion of preferred stock, or common stock, preferred stock or debt securities upon the exercise of warrants.

This prospectus describes some of the general terms that may apply to an offering of our securities. The specific terms and any other information relating to a specific offering will be set forth in a post-effective amendment to the registration statement of which this prospectus is a part or in a supplement to this prospectus or may be set forth in one or more documents incorporated by reference in this prospectus. You should read this prospectus, the information incorporated by reference in this prospectus and any prospectus supplement carefully before you invest.

Securities may be sold by us to or through underwriters or dealers, directly to purchasers or through agents designated from time to time. For additional information on the methods of sale, you should refer to the section entitled “Plan of Distribution” in this prospectus. If any underwriters are involved in the sale of any securities with respect to which this prospectus is being delivered, the names of such underwriters and any applicable discounts or commissions and over-allotment options will be set forth in a prospectus supplement. The price to the public of such securities and the net proceeds we expect to receive from such sale will also be set forth in a prospectus supplement.

Our common stock is listed on The NASDAQ Global Market under the symbol “SQNM.” On October 4, 2010, the last reported sale price of our common stock on The NASDAQ Global Market was $6.96 per share.

Investing in our securities involves a high degree of risk. See “Risk Factors” on page 7 of this prospectus and as updated in our future filings made with the Securities and Exchange Commission that are incorporated by reference in this prospectus.

This prospectus may not be used to offer or sell any securities unless accompanied by a prospectus supplement.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

You should rely only on the information contained in or incorporated by reference into this prospectus or any applicable prospectus supplement. We have not authorized anyone to provide you with different information. We are not making an offer to sell or seeking an offer to buy securities under this prospectus or any applicable prospectus supplement in any jurisdiction where the offer or sale is not permitted. The information contained in this prospectus, any applicable prospectus supplement and the documents incorporated by reference herein and therein are accurate only as of their respective dates, regardless of the time of delivery of this prospectus or any sale of a security.

This prospectus is part of a registration statement on Form S-3 that we filed with the Securities and Exchange Commission, or SEC, using a “shelf” registration process. Under this shelf registration statement, we may sell from time to time in one or more offerings up to a total dollar amount of $150,000,000 of common stock, preferred stock, various series of debt securities and warrants to purchase any of such securities, either individually or in units as described in this prospectus. Each time we sell any type or series of securities under this prospectus, we will provide a prospectus supplement that will contain more specific information about the terms of that offering. We may also add, update or change in a prospectus supplement any of the information contained in this prospectus or in documents we have incorporated by reference into this prospectus. This prospectus, together with any applicable prospectus supplement and the documents incorporated by reference into this prospectus or such prospectus supplement, include all material information relating to this offering. You should carefully read both this prospectus and any applicable prospectus supplement together with the additional information described under “Where You Can Find More Information” before buying securities in this offering.

Summary

The following summary highlights information contained elsewhere in this prospectus or incorporated by reference herein and does not contain all of the information that may be important to purchasers of our securities. Prospective purchasers of our securities should review this entire prospectus carefully, including the risks of investing discussed under “Risk Factors” on page 7, the financial statements and related notes, and the information to which we refer you and the information incorporated into this prospectus by reference, for a complete understanding of our business and this offering. Unless otherwise specified or required by context, references in this prospectus to “Sequenom,” “we,” “us” and “our” refer to Sequenom, Inc. and its subsidiaries.

Sequenom, Inc.

We incorporated in the State of Delaware in 1994. Our principal executive offices are located at 3595 John Hopkins Court, San Diego, California, 92121, and our telephone number at that address is (858) 202-9000. Our website address is http://www.sequenom.com. The information contained on, or accessible through, our website is not incorporated by reference into and does not form a part of this prospectus. SEQUENOM^® and MassARRAY^® are registered trademarks and SEQureDx™ and AttoSense™ and SensiGene™ are trademarks of Sequenom, Inc.

We operate our business on the basis of two reportable segments, Molecular Diagnostics (including Sequenom Center for Molecular Medicine) and Genetic Analysis.

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. 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 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 the FDA, seeking approval for selected diagnostic tests.

Supporting our initiatives in women’s health, oncology and infectious disease we completed our acquisition of the complete AttoSense portfolio of gene-based molecular tests and related assets from SensiGen, LLC in February 2009. The acquisition included highly-sensitive and specific tests for the detection and monitoring of human papillomavirus, or HPV, which is the primary cause of cervical cancer and a leading cause of head and neck cancers, systemic lupus erythematosus, chronic kidney disease, and other tests, all of which utilize our

proprietary MassARRAY platform. 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 by Sequenom CMM as a testing service to physicians. Sequenom CMM utilizes our patented SEQureDx ccff technology in performing its LDT test services. 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 Fetal^xy sex determination test, both using our patented SEQureDx ccff technology. In September 2009, Sequenom CMM completed validation and began offering to physicians a noninvasive molecular based cystic fibrosis carrier screening LDT. In August 2010, we announced that Sequenom CMM would no longer offer the Fetal^xy sex determination test after September 15, 2010.

Sequenom CMM is in the process of establishing an additional laboratory that complies with State of California CLIA requirements in San Diego, California. We anticipate that Sequenom CMM will complete this process and the licensing of the laboratory by the end of 2010 and expand the laboratory’s capacity as demand for its molecular diagnostic testing services increases. Sequenom CMM has made substantial investments in its information technology infrastructure to enhance the capabilities of the laboratory to track samples and provide electronic ordering and reporting, and has put in place sample collection and transportation logistics that can be readily scaled. 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 chromosomal abnormalities, specifically chromosome 21, also known as Trisomy 21, or Down syndrome. 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 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, we believe 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.

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., 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.

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.

Genetic Analysis

Our proprietary MassARRAY system, designated for research use only, or RUO, 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 using approximately the same amount of reagents and chip surface area as is used for a single locus/SNP analysis. In April 2010 we announced the launch of our next-generation mass spectrometry system for research use only, 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.

The Securities We May Offer

We may offer shares of our common stock or preferred stock, various series of debt securities or warrants to purchase any of such securities, either individually or in units, with a total value of up to $150,000,000 from time to time under this prospectus at prices and on terms to be determined at the time of any offering. This prospectus provides you with a general description of the securities we may offer. Each time we offer a type or series of securities under this prospectus, we will provide a prospectus supplement that will describe the specific amounts, prices and other important terms of the securities, including, to the extent applicable:

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designation or classification;

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aggregate principal amount or aggregate offering price;

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maturity;

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original issue discount;

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rates and times of payment of interest or dividends;

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redemption, conversion, exercise, exchange or sinking fund terms;

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ranking;

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restrictive covenants;

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voting or other rights;

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conversion or exchange prices or rates and, if applicable, any provisions for changes to or adjustments in the conversion or exchange prices or rates and in the securities or other property receivable upon conversion or exchange; and

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a discussion of material United States federal income tax considerations.

The prospectus supplement and any related free writing prospectus that we may authorize to be provided to you may also add, update or change information contained in this prospectus or in documents we have incorporated by reference. However, no prospectus supplement or free writing prospectus will offer a security that is not registered and described in this prospectus at the time of the effectiveness of the registration statement of which this prospectus is a part.

This prospectus may not be used to offer or sell securities unless it is accompanied by a prospectus supplement.

We may sell the securities directly to investors or to or through agents, underwriters or dealers. We and our agents, underwriters and dealers reserve the right to accept or reject all or part of any proposed purchase of securities. If we do offer securities to or through agents, underwriters or dealers, we will include in the applicable prospectus supplement:

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the names of those agents, underwriters or dealers;

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applicable fees, discounts and commissions to be paid to them;

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details regarding over-allotment options, if any; and

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the net proceeds to us.

Common Stock. We may issue shares of our common stock from time to time. Common stockholders are entitled to one vote per share for the election of directors and on all other matters that require common stockholder approval. Holders of our common stock are entitled to share in an equal amount per share in any dividends declared by our board of directors on the common stock and paid out of legally available assets.

Subject to any preferential rights of any outstanding preferred stock, in the event of our liquidation, dissolution or winding up, holders of our common stock are entitled to share ratably in the assets remaining after payment of liabilities and the liquidation preferences of any outstanding preferred stock. Our common stock does not carry any preemptive rights enabling a holder to subscribe for, or receive shares of, any class of our common stock or any other securities convertible into shares of any class of our common stock, or any redemption rights.

Preferred Stock. We may issue shares of our preferred stock from time to time, in one or more series. Our board of directors will determine the designations, voting powers, preferences and rights of the preferred stock, as well as the qualifications, limitations or restrictions thereof, including dividend rights, conversion rights, preemptive rights, terms of redemption or repurchase, liquidation preferences, sinking fund terms and the number of shares constituting any series or the designation of any series. Convertible preferred stock will be convertible into our common stock or exchangeable for other securities. Conversion may be mandatory or at your option and would be at prescribed conversion rates.

If we sell any series of preferred stock under this prospectus, we will fix the designations, voting powers, preferences and rights of such series of preferred stock, as well as the qualifications, limitations or restrictions thereof, in the certificate of designation relating to that series. We will file as an exhibit to the registration statement of which this prospectus is a part, or will incorporate by reference from reports that we file with the SEC, the form of any certificate of designation that describes the terms of the series of preferred stock that we are offering before the issuance of the related series of preferred stock. We urge you to read the applicable prospectus supplement (and any free writing prospectus that we may authorize to be provided to you) related to the series of preferred stock being offered, as well as the complete certificate of designation that contains the terms of the applicable series of preferred stock.

Debt Securities. We may issue debt securities from time to time, in one or more series, as either senior or subordinated debt or as senior or subordinated convertible debt. The senior debt securities will rank equally with any other unsecured and unsubordinated debt. The subordinated debt securities will be subordinate and junior in right of payment, to the extent and in the manner described in the instrument governing the debt, to all of our senior indebtedness. Convertible debt securities will be convertible into or exchangeable for our common stock or other securities. Conversion may be mandatory or at your option and would be at prescribed conversion rates.

Any debt securities issued under this prospectus will be issued under one or more documents called indentures, which are contracts between us and a national banking association or other eligible party, as trustee. In this prospectus, we have summarized certain general features of the debt securities. We urge you, however, to read the applicable prospectus supplement (and any free writing prospectus that we may authorize to be provided to you) related to the series of debt securities being offered, as well as the complete indentures that contain the terms of the debt securities. Forms of indentures have been filed as exhibits to the registration statement of which this prospectus is a part, and supplemental indentures and forms of debt securities containing the terms of the debt securities being offered will be filed as exhibits to the registration statement of which this prospectus is a part or will be incorporated by reference from reports that we file with the SEC.

Warrants. We may issue warrants for the purchase of common stock, preferred stock or debt securities in one or more series. We may issue warrants independently or together with common stock, preferred stock or debt securities, and the warrants may be attached to or separate from these securities. In this prospectus, we have summarized certain general features of the warrants. We urge you, however, to read the applicable prospectus supplement (and any free writing prospectus that we may authorize to be provided to you) related to the series of warrants being offered, as well as any warrant agreements and warrant certificates that contain the terms of the warrants. We will file as exhibits to the registration statement of which this prospectus is a part, or will incorporate by reference from reports that we file with the SEC, any forms of warrant agreements and forms of warrant certificates containing the terms of the warrants being offered, and any supplemental warrant agreements and forms of warrant certificates containing the terms of the warrants being offered.

Any warrants issued under this prospectus may be evidenced by warrant certificates. Warrants also may be issued under an applicable warrant agreement that we enter into with a warrant agent. We will indicate the name and address of the warrant agent, if applicable, in the prospectus supplement relating to the particular series of warrants being offered.

Units. We may issue, in one or more series, units consisting of common stock, preferred stock, debt securities or warrants for the purchase of common stock, preferred stock or debt securities in any combination. In this prospectus, we have summarized certain general features of the units. We urge you, however, to read the applicable prospectus supplement (and any free writing prospectus that we may authorize to be provided to you) related to the series of units being offered, as well as any unit agreement that contains the terms of the units. We will file as exhibits to the registration statement of which this prospectus is a part, or will incorporate by reference from reports that we file with the SEC, any form of unit agreement and any supplemental agreements that describe the terms of the series of units we are offering before the issuance of the related series of units.

Any units issued under this prospectus may be evidenced by unit certificates. Units also may be issued under an applicable unit agreement that we enter into with a unit agent. We will indicate the name and address of the unit agent, if applicable, in the prospectus supplement relating to the particular series of units being offered.

An investment in our securities involves a high degree of risk. Before you make a decision to invest in our securities, you should carefully consider the risks described in the section entitled “Risk Factors” contained in our annual report on Form 10-K for the period ended December 31, 2009, as filed with the SEC on March 16, 2010, and our quarterly reports on Form 10-Q for the period ended March 31, 2010 and June 30, 2010, as filed with the SEC on May 7, 2010 and August 5, 2010, respectively, which are incorporated herein by reference in their entirety, as well as any amendment or update thereto reflected in our subsequent filings with the SEC. If any of these risks actually occur, our business, operating results, prospects or financial condition could be materially and adversely affected. This could cause the trading price of our common stock, or, if applicable, other securities, to decline and you may lose part or all of your investment. The risks described are not the only ones that we face. Additional risks not presently known to us or that we currently deem immaterial may also affect our business, operating results, prospects or financial condition.

This prospectus, including the documents that we incorporate by reference herein, contains, and any applicable prospectus supplement including the documents we incorporate by reference therein may contain, “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, or Securities Act, and Section 21E of the Securities Exchange Act of 1934, or Exchange Act. These forward-looking statements can generally be identified as such because the context of the statements will include words such as “anticipates,” “believes,” “can,” “continue,” “could,” “estimates,” “expects,” “intends,” “may,” “plans,” “potential,” “predicts,” “projects,” “should,” “will,” “would,” and the negative of these words or similar words. Similarly, statements that describe our future plans, strategies, intentions, expectations, objectives, goals or prospects are also forward-looking statements. Discussions containing these forward-looking statements may be found, among other places, in the “Business,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Risk Factors” sections incorporated by reference from our most recent annual report on Form 10-K and our quarterly reports on Form 10-Q for the quarters ended subsequent to our filing of such annual report on Form 10-K with the SEC, as well as any amendments thereto reflected in subsequent filings with the SEC. These forward-looking statements are or will be, as applicable, based largely on our expectations, beliefs and projections about future events and future trends affecting our business, and so are or will be, as applicable, subject to risks and uncertainties that could cause actual results to differ materially from those anticipated in the forward-looking statements. The risks and uncertainties include, among others, those referenced in “Risk Factors” above and in any applicable prospectus supplement and any documents incorporated by reference herein or therein.

In addition, past financial or operating performance is not necessarily a reliable indicator of future performance and you should not use our historical performance to anticipate results or future period trends. We can give no assurances that any of the events anticipated by the forward-looking statements will occur or, if any of them do, what impact they will have on our results of operations and financial condition. Except as required by law, we undertake no obligation to publicly revise our forward-looking statements to reflect events or circumstances that arise after the date of this prospectus or the prospectus supplement or the date of documents incorporated by reference in this prospectus that include forward-looking statements.

The following table sets forth our ratio of earnings to fixed charges and ratio of combined fixed charges and preference dividends to earnings for the periods indicated:

For the purpose of this table, “earnings” consist of loss from continuing operations before income taxes, extraordinary items, cumulative effect of accounting changes, equity in net losses of affiliates and fixed charges, and “fixed charges” consist of interest expense and the portion of operating lease expense that we estimate represents interest. For the fiscal years ended December 31, 2005, 2006, 2007, 2008 and 2009, and the six months ended June 30, 2010, we had no earnings and are therefore unable to calculate the ratio of combined fixed charges and preference dividends to earnings. Our earnings for those periods were insufficient to cover fixed charges by $27.5 million, $18.2 million, $22.0 million, $43.9 million, $70.9 million and $76.1 million, respectively.

We will retain broad discretion over the use of the net proceeds from the sale of the securities offered hereby. Unless otherwise indicated in any prospectus supplement, we intend to use the net proceeds from the sale of the securities under this prospectus for general corporate purposes, which may include research and development, capital expenditures, working capital, and general administrative expenses. We may also use a portion of the net proceeds to acquire or invest in businesses, products and technologies that are complementary to our own, although we have no current plans, commitments or agreements with respect to any acquisitions as of the date of this prospectus. We will set forth in the applicable prospectus supplement our intended use for the net proceeds received from the sale of any securities sold pursuant to the prospectus supplement. Pending these uses, we intend to invest the net proceeds in U.S. Government securities and repurchase agreements collateralized by U.S. Government securities that have ratings of AAA, U.S. Treasury-only money market funds, certificates of deposit or other securities guaranteed by the Federal Deposit Insurance Corporation.

As of the date of this prospectus, our certificate of incorporation authorizes us to issue 185,000,000 shares of common stock, par value $0.001 per share, and 5,000,000 shares of preferred stock, par value $0.001 per share. As of October 1, 2010, 76,324,792 shares of common stock were outstanding. To date, our board of directors has designated 1,850,000 of the authorized shares of preferred stock as Series A Junior Participating Preferred Stock, or Series A Preferred Stock, which series is described in greater detail below under “Share Purchase Rights Agreement.” As of October 1, 2010, no shares of Series A Preferred Stock were outstanding.

The following summary describes the material terms of our capital stock and stockholder rights plan. The description of capital stock and stockholder rights plan is qualified by reference to our certificate of incorporation, our bylaws, the certificate of designation of our Series A Preferred Stock, and our stockholder rights plan, which are incorporated by reference as exhibits into the registration statement of which this prospectus is a part.

Voting. Common stockholders are entitled to one vote per share for the election of directors and on all other matters that require stockholder approval. Under our certificate of incorporation and bylaws, directors are elected by a plurality vote, and our stockholders do not have cumulative voting rights. Accordingly, the holders of a majority of our outstanding shares of common stock entitled to vote in any election of directors can elect all of the directors standing for election, if they should so choose. In all other matters, an action by our common stockholders requires the affirmative vote of the holders of a majority of our outstanding shares of common stock entitled to vote.

Dividends and Other Distributions. Subject to the rights of any outstanding shares of preferred stock, holders of our common stock are entitled to share in an equal amount per share in any dividends declared by our board of directors on the common stock and paid out of legally available assets. Any dividends on our common stock will be non-cumulative.

Distribution on Liquidation or Dissolution. In the event of our liquidation, dissolution or winding up, holders of our common stock are entitled to share ratably in all assets legally available for distribution to our stockholders after the payment of all of our debts and other liabilities and the satisfaction of any liquidation preference granted to the holders of any outstanding shares of our preferred stock.

Other Rights. Our common stock does not carry any preemptive rights enabling a holder to subscribe for, or receive shares of, any class of our common stock or any other securities convertible into shares of any class of our common stock, or any redemption rights.

Under our certificate of incorporation, our board of directors has the authority, without further action by stockholders, to designate up to 5,000,000 shares of preferred stock in one or more series and to fix or alter, from time to time, the designations, powers and rights of each series of preferred stock and the qualifications, limitations or restrictions of any series of preferred stock, including dividend rights, dividend rate, conversion rights, voting rights, rights and terms of redemption (including sinking fund provisions), redemption price or prices, and the liquidation preference of any wholly unissued series of preferred stock, any or all of which may be greater than the rights of the common stock, and to establish the number of shares constituting any such series.

Our board of directors will fix the rights, preferences, privileges, qualifications and restrictions of the preferred stock of each series that we sell under this prospectus and any applicable prospectus supplements in the

certificate of designation relating to each such series. We will incorporate by reference as an exhibit to the registration statement of which this prospectus is a part or as an exhibit to one or more current reports on Form 8-K, the form of any certificate of designation that describes the terms of the series of preferred stock we are offering before the issuance of the related series of preferred stock. This description will include:

If we issue shares of preferred stock under this prospectus, the shares will be fully paid and non-assessable.

The issuance of preferred stock could adversely affect the voting power of holders of common stock and reduce the likelihood that common stockholders will receive dividend payments and payments upon liquidation. The issuance could have the effect of decreasing the market price of the common stock. The issuance of preferred stock also could have the effect of delaying, deterring or preventing a change in control of us.

Each outstanding share of our common stock has attached to it one preferred share purchase right, which we refer to as a Right. Each Right entitles the registered holder to purchase from us one one-hundredth of a share of Series A Preferred Stock at a price of $120.00, which we refer to as the Purchase Price, subject to adjustment. The description and terms of the Rights are set forth in a Rights Agreement dated as of March 3, 2009, between us and American Stock Transfer & Trust Company, LLC as Rights Agent, which is incorporated by reference as an exhibit into the registration statement of which this prospectus is a part.

Until the earlier to occur of (i) the date of a public announcement that a person, entity or group of affiliated or associated persons have acquired beneficial ownership of 15% or more of our outstanding common stock, which we refer to as an Acquiring Person, or (ii) 10 business days (or such later date as may be determined by action of our board of directors prior to such time as any person or entity becomes an Acquiring Person) following the commencement of, or announcement of an intention to commence, a tender offer or exchange offer the consummation of which would result in any person or entity becoming an Acquiring Person (the earlier of such dates being called the Distribution Date), the Rights will be evidenced by the stock certificates representing our common stock then outstanding.

Until the Distribution Date (or earlier redemption or expiration of the Rights), the Rights will be transferable with and only with our common stock, and the surrender or transfer of any common stock certificates will also constitute the transfer of the Rights associated with the common stock represented by such certificate.

The Rights are not exercisable until the Distribution Date. As soon as practicable following the Distribution Date, separate certificates evidencing the Rights, which we refer to as the Right Certificates, will be mailed to holders of record of our common stock as of the close of business on the Distribution Date and such separate Right Certificates alone will evidence the Rights.

The Rights will expire as of the close of business on March 20, 2019, which we refer to as the Final Expiration Date, unless the Rights are earlier redeemed or exchanged by us, in each case, as described below.

The Purchase Price payable, and the number of Series A Preferred Shares or other securities or other property issuable, upon exercise of the Rights are subject to adjustment from time to time to prevent dilution (i) in the event of a stock dividend on, or a subdivision, combination or reclassification of, the Series A Preferred Shares, (ii) upon the grant to holders of the Series A Preferred Shares of certain rights or warrants to subscribe for or purchase Series A Preferred Shares at a price, or securities convertible into Series A Preferred Shares with a conversion price, less than the then current market price of the Series A Preferred Shares or (iii) upon the distribution to holders of the Series A Preferred Shares of evidences of indebtedness or assets (excluding regular periodic cash dividends paid out of earnings or retained earnings or dividends payable in Series A Preferred Shares) or of subscription rights or warrants (other than those referred to above). With certain exceptions, no adjustment in the Purchase Price will be required until cumulative adjustments require an adjustment of at least 1% in such Purchase Price. The exercise of Rights for Series A Preferred Shares is at all times subject to the availability of a sufficient number of authorized but unissued Series A Preferred Shares.

The number of outstanding Rights and the number of one one-hundredths of a Series A Preferred Share issuable upon exercise of each Right are also subject to adjustment in the event of a stock split of our common stock or a stock dividend on our common stock payable in our common stock or subdivisions, consolidation or combinations of our common stock occurring, in any case, prior to the Distribution Date. No fractional Series A Preferred Shares will be issued (other than fractions which are integral multiples of the number of one one-hundredths of a Series A Preferred Share issuable upon the exercise of one Right, which may, at our election, be evidenced by depositary receipts), and in lieu thereof, an adjustment in cash will be made based on the market price of the Series A Preferred Shares on the last trading day prior to the date of exercise.

Series A Preferred Shares purchasable upon exercise of the Rights will not be redeemable. Each Series A Preferred Share will be entitled to a minimum preferential quarterly dividend payment of $1.00 but will be entitled to an aggregate dividend of 100 times the dividend declared per share of our common stock. In the event of liquidation, the holders of our Series A Preferred Shares would be entitled to a minimum preferential liquidation payment of $100 per share, but would be entitled to receive an aggregate payment equal to 100 times the payment made per share of our common stock. Each Series A Preferred Share will have 100 votes, voting together with our common stock. In the event of any merger, consolidation or other transaction in which our common stock is exchanged, each Series A Preferred Share will be entitled to receive 100 times the amount of consideration received per share of our common stock. These rights are protected by customary anti-dilution provisions. Because of the nature of the Series A Preferred Shares’ dividend and liquidation rights, the value of one one-hundredth of a Series A Preferred Share should approximate the value of one share of our common stock. The Series A Preferred Shares would rank junior to any other series of our preferred stock.

In the event that any person or group of affiliated or associated persons becomes an Acquiring Person, proper provision shall be made so that each holder of a Right, other than Rights beneficially owned by the Acquiring Person and its associates and affiliates (which will thereafter be void), will thereafter have the right to receive upon exercise that number of shares of our common stock having a market value of two times the exercise price of the Right (or, if such number of shares is not and cannot be authorized, we may issue Series A Preferred Shares, cash, debt, stock or a combination thereof in exchange for the Rights). This right will terminate 60 days after the date on which the Rights become nonredeemable (as described below), unless there is an injunction or similar obstacle to exercise of the Rights, in which event this right will terminate 60 days after the date on which the Rights again become exercisable.

Generally, an “Acquiring Person” shall not be deemed to include (i) us, (ii) any subsidiary of us, (iii) any of our employee benefit or compensation plans, or (iv) any entity holding shares of our common stock for or pursuant to the terms of any such employee benefit or compensation plans. Except under limited circumstances, no person or entity shall become an Acquiring Person as the result of the acquisition of our common stock by us which, by reducing the number of shares outstanding, increases the proportionate number of shares beneficially owned by such person or entity to 15% or more of our common stock then outstanding, and no person shall become an Acquiring Person due to the acquisition of our common stock directly from us.

In the event that we are acquired in a merger or other business combination transaction or 50% or more of our consolidated assets or earning power are sold to an Acquiring Person, its associates or affiliates or certain other persons in which such persons have an interest, proper provision will be made so that each holder of a Right will thereafter have the right to receive, upon the exercise thereof at the then current exercise price of the Right, that number of shares of common stock of the acquiring company which at the time of such transaction will have a market value of two times the exercise price of the Right.

At any time after an Acquiring Person becomes an Acquiring Person and prior to the acquisition by such Acquiring Person of 50% or more of our outstanding common stock, our board of directors may exchange the Rights (other than Rights owned by such person or group which have become void), in whole or in part, at an exchange ratio of one share of our common stock, or one one-hundredth of a Series A Preferred Share, per Right (or, at our election, we may issue cash, debt, stock or a combination thereof in exchange for the Rights), subject to adjustment.

At any time prior to the earliest of (i) the day of the first public announcement that a person has become an Acquiring Person or (ii) the Final Expiration Date, our board of directors may redeem the Rights in whole, but not in part, at a price of $0.001 per Right, which we refer to as the Redemption Price. Following the expiration of the above periods, the Rights become nonredeemable. Immediately upon any redemption of the Rights, the right to exercise the Rights will terminate and the only right of the holders of Rights will be to receive the Redemption Price.

The terms of the Rights may be amended by our board of directors without the consent of the holders of the Rights, except that from and after such time as the rights are distributed no such amendment may adversely affect the interests of the holders of the Rights (excluding the interest of any Acquiring Person).

Until a Right is exercised, the holder thereof, as such, will have no rights as a stockholder of Sequenom, including, without limitation, the right to vote or to receive dividends.

Delaware Law. We are governed by the provisions of Section 203 of the Delaware General Corporation Law. In general, Section 203 prohibits a publicly held Delaware corporation from engaging in a “business combination” with an “interested stockholder” for a period of three years after the date of the transaction in which the person became an interested stockholder, unless (i) before the date that the person became an “interested stockholder,” our board of directors approved either the “business combination” or the transaction which makes the person an “interested stockholder,” (ii) the “interested stockholder” owned at least 85% of the voting stock of the corporation outstanding at the time the transaction commenced, excluding for purposes of determining the number of shares outstanding (a) shares owned by persons who are directors and also officers and (b) shares owned by employee stock plans in which employee participants do not have the right to determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer, or (iii) after the date that the person became an “interested stockholder,” the business combination is approved by our board of directors and the vote of at least 66 2/3% of our outstanding voting stock that is not owned by the “interested stockholder.” Generally, a “business combination” includes a merger, asset sale or other transaction resulting in a financial benefit to the stockholder. An “interested stockholder” is a person who either owns 15% or more of our outstanding voting stock or, together with affiliates and associates, owns or, within three prior years, did own, 15% or more of our outstanding voting stock. The statute could have the effect of delaying, deferring or preventing a change in our control.

Bylaw and Certificate of Incorporation Provisions. Our certificate of incorporation and bylaws include a number of provisions that may have the effect of deterring hostile takeovers or delaying or preventing changes in our control or our managements, including, but not limited to the following:

These and other provisions contained in our certificate of incorporation and bylaws are expected to discourage coercive takeover practices and inadequate takeover bids. These provisions are also designed to encourage persons seeking to acquire control of us to first negotiate with our board of directors. However, these provisions could delay or discourage transactions involving an actual or potential change in control of us, including transactions in which stockholders might otherwise receive a premium for their shares over then current prices. Such provisions could also limit the ability of stockholders to remove current management or approve transactions that stockholders may deem to be in their best interests and, therefore, could adversely affect the price of our common stock.

The transfer agent and registrar for our common stock is American Stock Transfer & Trust Company, LLC.

Our common stock is listed on The NASDAQ Global Market under the symbol “SQNM.”

We may issue debt securities, in one or more series, as either senior or subordinated debt or as senior or subordinated convertible debt. While the terms we have summarized below will apply generally to any debt securities that we may offer under this prospectus, we will describe the particular terms of any debt securities that we may offer in more detail in the applicable prospectus supplement. The terms of any debt securities offered under a prospectus supplement may differ from the terms described below. Unless the context requires otherwise, whenever we refer to the indentures, we also are referring to any supplemental indentures that specify the terms of a particular series of debt securities.

If we issue debt securities under this prospectus, we will issue the senior debt securities under the senior indenture that we will enter into with the trustee named in the senior indenture, and we will issue the subordinated debt securities under the subordinated indenture that we will enter into with the trustee named in the subordinated indenture. The indentures will be qualified under the Trust Indenture Act of 1939. We use the term “debenture trustee” to refer to either the trustee under the senior indenture or the trustee under the subordinated indenture, as applicable. We have filed forms of indentures to the registration statement of which this prospectus is a part, and supplemental indentures and forms of debt securities containing the terms of the debt securities being offered will be filed as exhibits to the registration statement of which this prospectus is a part or will be incorporated by reference from reports that we file with the SEC.

The following summaries of material provisions of the senior debt securities, the subordinated debt securities and the indentures are subject to, and qualified in their entirety by reference to, all of the provisions of the indenture applicable to a particular series of debt securities. We urge you to read the applicable prospectus supplements and any free writing prospectuses that we may authorize to be provided to you in connection with the debt securities that we may offer under this prospectus, as well as the complete indentures that contain the terms of the debt securities. Except as we may otherwise indicate, the terms of the senior indenture and the subordinated indenture are identical.

We will describe in the applicable prospectus supplement the terms of the series of debt securities being offered, including, to the extent applicable:

We will set forth in the applicable prospectus supplement the terms on which a series of debt securities may be convertible into or exchangeable for our common stock or our other securities, if applicable. We will include provisions as to whether conversion or exchange is mandatory, at the option of the holder or at our option. We may include provisions pursuant to which the number of shares of our common stock or our other securities that the holders of the series of debt securities receive would be subject to adjustment.

Unless we provide otherwise in the prospectus supplement applicable to a particular series of debt securities, the indentures will not contain any covenant that restricts our ability to merge or consolidate, or sell, convey, transfer or otherwise dispose of all or substantially all of our assets. However, any successor to or acquirer of such assets must assume all of our obligations under the indentures or the debt securities, as appropriate. If the debt securities are convertible into or exchangeable for our other securities or securities of other entities, the person with whom we consolidate or merge or to whom we sell all of our property must make provisions for the conversion of the debt securities into securities that the holders of the debt securities would have received if they had converted the debt securities before the consolidation, merger or sale.

Unless we provide otherwise in the prospectus supplement applicable to a particular series of debt securities, the following are events of default under the indentures with respect to any series of debt securities that we may issue:

If an event of default with respect to debt securities of any series occurs and is continuing, other than an event of default specified in the last bullet point above, the debenture trustee or the holders of at least a majority in aggregate principal amount of the outstanding debt securities of that series, by notice to us in writing, and to the debenture trustee if notice is given by such holders, may declare the unpaid principal of, premium, if any, and accrued interest, if any, due and payable immediately. If an event of default specified in the last bullet point above occurs with respect to us, the principal amount of and accrued interest, if any, of each series of debt securities then outstanding shall be due and payable without any notice or other action on the part of the debenture trustee or any holder.

The holders of a majority in principal amount of the outstanding debt securities of an affected series may waive any default or event of default with respect to the series and its consequences, except defaults or events of default regarding payment of principal, premium, if any, or interest, unless we have cured the default or event of default in accordance with the indenture. Any waiver shall cure the default or event of default.

Subject to the terms of the indentures, if an event of default under an indenture shall occur and be continuing, the debenture trustee will be under no obligation to exercise any of its rights or powers under such indenture at the request or direction of any of the holders of the applicable series of debt securities, unless such

holders have offered the debenture trustee reasonable indemnity. The holders of a majority in principal amount of the outstanding debt securities of any series will have the right to direct the time, method and place of conducting any proceeding for any remedy available to the debenture trustee, or exercising any trust or power conferred on the debenture trustee, with respect to the debt securities of that series, provided that:

A holder of the debt securities of any series will have the right to institute a proceeding under the indentures or to appoint a receiver or trustee, or to seek other remedies only if:

These limitations do not apply to a suit instituted by a holder of debt securities if we default in the payment of the principal, premium, if any, or interest on, the debt securities.

We will periodically file statements with the debenture trustee regarding our compliance with specified covenants in the indentures.

We and the debenture trustee may change an indenture without the consent of any holders with respect to specific matters:

In addition, under the indentures, the rights of holders of a series of debt securities may be changed by us and the debenture trustee with the written consent of the holders of at least a majority in aggregate principal amount of the outstanding debt securities of each series that is affected. However, unless we provide otherwise in the prospectus supplement applicable to a particular series of debt securities, we and the debenture trustee may make the following changes only with the consent of each holder of any outstanding debt securities affected:

Each indenture provides that we can elect to be discharged from our obligations with respect to one or more series of debt securities. Notwithstanding the foregoing, we cannot be discharged from certain specified obligations, including obligations to:

In order to exercise our rights to be discharged, we must deposit with the debenture trustee money or government obligations sufficient to pay all of the principal of, any premium, if any, and interest on, the debt securities of the series on the dates payments are due.

We will issue each series of debt securities only in fully registered form without coupons and, unless we provide otherwise in the applicable prospectus supplement, in denominations of $1,000 and any integral multiple thereof. The indentures provide that we may issue debt securities of a series in temporary or permanent global form and as book-entry securities that will be deposited with, or on behalf of, The Depository Trust Company, or DTC, or another depositary named by us and identified in a prospectus supplement with respect to that series. See “Legal Ownership of Securities” for a further description of the terms relating to any book-entry securities.

At the option of the holder, subject to the terms of the indentures and the limitations applicable to global securities described in the applicable prospectus supplement, the holder of the debt securities of any series can exchange the debt securities for other debt securities of the same series, in any authorized denomination and of like tenor and aggregate principal amount.

Subject to the terms of the indentures and the limitations applicable to global securities described in the applicable prospectus supplement, holders of the debt securities may present the debt securities for exchange or

for registration of transfer, duly endorsed or with the form of transfer endorsed thereon duly executed if so required by us or the security registrar, at the office of the security registrar or at the office of any transfer agent designated by us for this purpose. Unless otherwise provided in the debt securities that the holder presents for transfer or exchange, we will impose no service charge for any registration of transfer or exchange, but we may require payment of any taxes or other governmental charges.

We will name in the applicable prospectus supplement the security registrar, and any transfer agent in addition to the security registrar, that we initially designate for any debt securities. We may at any time designate additional transfer agents or rescind the designation of any transfer agent or approve a change in the office through which any transfer agent acts, except that we will be required to maintain a transfer agent in each place of payment for the debt securities of each series.

If we elect to redeem the debt securities of any series, we will not be required to:

The debenture trustee, other than during the occurrence and continuance of an event of default under an indenture, undertakes to perform only those duties as are specifically set forth in the applicable indenture. Upon an event of default under an indenture, the debenture trustee must use the same degree of care as a prudent person would exercise or use in the conduct of his or her own affairs. Subject to this provision, the debenture trustee is under no obligation to exercise any of the powers given it by the indentures at the request of any holder of debt securities unless it is offered reasonable security and indemnity against the costs, expenses and liabilities that it might incur.

Unless we otherwise indicate in the applicable prospectus supplement, we will make payment of the interest on any debt securities on any interest payment date to the person in whose name the debt securities, or one or more predecessor securities, are registered at the close of business on the regular record date for the interest.

We will pay principal of and any premium and interest on the debt securities of a particular series at the office of the paying agents designated by us, except that unless we otherwise indicate in the applicable prospectus supplement, we will make interest payments by check that we will mail to the holder or by wire transfer to certain holders. Unless we otherwise indicate in the applicable prospectus supplement, we will designate the corporate trust office of the debenture trustee in the City of New York as our sole paying agent for payments with respect to debt securities of each series. We will name in the applicable prospectus supplement any other paying agents that we initially designate for the debt securities of a particular series. We will maintain a paying agent in each place of payment for the debt securities of a particular series.

All money we pay to a paying agent or the debenture trustee for the payment of the principal of or any premium or interest on any debt securities that remains unclaimed at the end of two years after such principal, premium or interest has become due and payable will be repaid to us, and the holder of the debt security thereafter may look only to us for payment thereof.

The indentures and the debt securities will be governed by and construed in accordance with the laws of the State of New York, except to the extent that the Trust Indenture Act of 1939 is applicable.

The subordinated debt securities will be unsecured and will be subordinate and junior in priority of payment to certain of our other indebtedness to the extent described in a prospectus supplement. The subordinated indenture does not limit the amount of subordinated debt securities that we may issue, nor does it limit us from issuing any other secured or unsecured debt.

We may issue warrants for the purchase of common stock, preferred stock or debt securities in one or more series. We may issue warrants independently or together with common stock, preferred stock or debt securities, and the warrants may be attached to or separate from these securities. While the terms summarized below will apply generally to any warrants that we may offer, we will describe the particular terms of any series of warrants in more detail in the applicable prospectus supplement. The terms of any warrants offered under a prospectus supplement may differ from the terms described below.

We have filed forms of the warrant agreements and forms of warrant certificates containing the terms of the warrants being offered as exhibits to the registration statement of which this prospectus is a part. We will file as exhibits to the registration statement of which this prospectus is a part, or will incorporate by reference from reports that we file with the SEC, the form of warrant agreement, including a form of warrant certificate, that describes the terms of the particular series of warrants we are offering before the issuance of the related series of warrants. The following summaries of material provisions of the warrants and the warrant agreements are subject to, and qualified in their entirety by reference to, all of the provisions of the warrant agreement and warrant certificate applicable to the particular series of warrants that we may offer under this prospectus. We urge you to read the applicable prospectus supplements related to the particular series of warrants that we may offer under this prospectus, as well as any free writing prospectuses that we may authorize to be provided to you in connection with the warrants, and the complete warrant agreements and warrant certificates that contain the terms of the warrants.

We will describe in the applicable prospectus supplement the terms of the series of warrants being offered, including, to the extent applicable:

Before exercising their warrants, holders of warrants will not have any of the rights of holders of the securities purchasable upon such exercise, including:

Each warrant will entitle the holder to purchase the securities that we specify in the applicable prospectus supplement at the exercise price that we describe in the applicable prospectus supplement. Unless we otherwise specify in the applicable prospectus supplement, holders of the warrants may exercise the warrants at any time up to the specified time on the expiration date that we set forth in the applicable prospectus supplement. After the close of business on the expiration date, unexercised warrants will become void.

Holders of the warrants may exercise the warrants by delivering the warrant or warrant certificate representing the warrants to be exercised together with specified information, and paying the required amount to the warrant agent, if applicable, in immediately available funds, as provided in the applicable prospectus supplement. We will set forth on the reverse side of any warrant certificate and in the applicable prospectus supplement the information that the holder of the warrant will be required to deliver to any warrant agent.

Upon receipt of the required payment and any warrant certificate properly completed and duly executed at the corporate trust office of any warrant agent or any other office indicated in the applicable prospectus supplement, we will issue and deliver the securities purchasable upon such exercise. If fewer than all of the warrants represented by a warrant certificate are exercised, then we will issue a new warrant certificate for the remaining amount of warrants. If we so indicate in the applicable prospectus supplement, holders of the warrants may surrender securities as all or part of the exercise price for warrants.

Unless we provide otherwise in the applicable prospectus supplement, the warrants and warrant agreements will be governed by and construed in accordance with the laws of the State of New York.

Any warrant agent will act solely as our agent under the applicable warrant agreement and will not assume any obligation or relationship of agency or trust with any holder of any warrant. A single bank or trust company may act as warrant agent for more than one series of warrants. A warrant agent will have no duty or responsibility in case of any default by us under the applicable warrant agreement or warrant, including any duty or responsibility to initiate any proceedings at law or otherwise, or to make any demand upon us. Any holder of a warrant may, without the consent of any related warrant agent or the holder of any other warrant, enforce by appropriate legal action its right to exercise, and receive the securities purchasable upon exercise of, its warrants.

We may issue, in one more series, units consisting of common stock, preferred stock, debt securities or warrants for the purchase of common stock, preferred stock or debt securities in any combination. While the terms we have summarized below will apply generally to any units that we may offer under this prospectus, we will describe the particular terms of any series of units in more detail in the applicable prospectus supplement. The terms of any units offered under a prospectus supplement may differ from the terms described below.

We will file as exhibits to the registration statement of which this prospectus is a part, or will incorporate by reference from reports that we file with the SEC, any form of unit agreement that describes the terms of the series of units we are offering, and any supplemental agreements. The following summaries of material terms and provisions of the units are subject to, and qualified in their entirety by reference to, all of the provisions of any unit agreement and any supplemental agreements applicable to a particular series of units. We urge you to read the applicable prospectus supplements related to the particular series of units that we may offer under this prospectus, as well as any free writing prospectuses that we may authorize to be provided to you in connection with the units and any unit agreement and any supplemental agreements that contain the terms of the units.

Each unit will be issued so that the holder of the unit is also the holder of each security included in the unit. Thus, the holder of a unit will have the rights and obligations of a holder of each included security. Any unit agreement under which a unit is issued may provide that the securities included in the unit may not be held or transferred separately, at any time or at any time before a specified date.

We will describe in the applicable prospectus supplement the terms of the series of units being offered, including, to the extent applicable:

The provisions described in this section, as well as those described under “Description of Capital Stock,” “Description of Debt Securities” and “Description of Warrants” will apply to each unit and to any common stock, preferred stock, debt security or warrant included in each unit, respectively.

We may issue units in such amounts and in such number of distinct series as we determine.

Any unit agent will act solely as our agent under the applicable unit agreement and will not assume any obligation or relationship of agency or trust with any holder of any unit. A single bank or trust company may act as unit agent for more than one series of units. A unit agent will have no duty or responsibility in case of any default by us under the applicable unit agreement or unit, including any duty or responsibility to initiate any proceedings at law or otherwise, or to make any demand upon us. Any holder of a unit may, without the consent of any related unit agent or the holder of any other unit, enforce by appropriate legal action its rights as holder under any security included in the unit.

We and any unit agent and any of their agents may treat the registered holder of any unit certificate as an absolute owner of the units evidenced by that certificate for any purpose and as the person entitled to exercise the rights attaching to the units so requested, despite any notice to the contrary. See “Legal Ownership of Securities” below.

We can issue securities in registered form or in the form of one or more global securities. We describe global securities in greater detail below. We refer to those persons who have securities registered in their own names on the books that we or any applicable trustee, depositary or warrant agent maintain for this purpose as the “holders” of those securities. These persons are the legal holders of the securities. We refer to those persons who, indirectly through others, own beneficial interests in securities that are not registered in their own names, as “indirect holders” of those securities. As we discuss below, indirect holders are not legal holders, and investors in securities issued in book-entry form or in street name will be indirect holders.

We may issue securities in book-entry form only, as we will specify in the applicable prospectus supplement. This means securities may be represented by one or more global securities registered in the name of a financial institution that holds them as depositary on behalf of other financial institutions that participate in the depositary’s book-entry system. These participating institutions, which are referred to as participants, in turn, hold beneficial interests in the securities on behalf of themselves or their customers.

Only the person in whose name a security is registered is recognized as the holder of that security. Securities issued in global form will be registered in the name of the depositary or its participants. Consequently, for securities issued in global form, we will recognize only the depositary as the holder of the securities, and we will make all payments on the securities to the depositary. The depositary passes along the payments it receives to its participants, which in turn pass the payments along to their customers who are the beneficial owners. The depositary and its participants do so under agreements they have made with one another or with their customers; they are not obligated to do so under the terms of the securities.

As a result, investors in a book-entry security will not own securities directly. Instead, they will own beneficial interests in a global security, through a bank, broker or other financial institution that participates in the depositary’s book-entry system or holds an interest through a participant. As long as the securities are issued in global form, investors will be indirect holders, and not holders, of the securities.

We may terminate a global security or issue securities in non-global form. In these cases, investors may choose to hold their securities in their own names or in “street name.” Securities held by an investor in street name would be registered in the name of a bank, broker or other financial institution that the investor chooses, and the investor would hold only a beneficial interest in those securities through an account he or she maintains at that institution.

For securities held in street name, we will recognize only the intermediary banks, brokers and other financial institutions in whose names the securities are registered as the holders of those securities, and we will make all payments on those securities to them. These institutions pass along the payments they receive to their customers who are the beneficial owners, but only because they agree to do so in their customer agreements or because they are legally required to do so. Investors who hold securities in street name will be indirect holders, not holders, of those securities.

Our obligations, as well as the obligations of any applicable trustee and of any third parties employed by us or a trustee, run only to the legal holders of the securities. We do not have obligations to investors who hold beneficial interests in global securities, in street name or by any other indirect means. This will be the case whether an investor chooses to be an indirect holder of a security or has no choice because we are issuing the securities only in global form.

For example, once we make a payment or give a notice to the holder, we have no further responsibility for the payment or notice even if that holder is required, under agreements with depositary participants or customers or by law, to pass it along to the indirect holders but does not do so. Similarly, we may want to obtain the approval of the holders to amend an indenture, to relieve us of the consequences of a default or of our obligation to comply with a particular provision of the indenture or for other purposes. In such an event, we would seek approval only from the holders, and not the indirect holders, of the securities. Whether and how the holders contact the indirect holders is up to the holders.

If you hold securities through a bank, broker or other financial institution, either in book-entry form or in street name, you should check with your own institution to find out:

A global security is a security that represents one or any other number of individual securities held by a depositary. Generally, all securities represented by the same global securities will have the same terms.

Each security issued in book-entry form will be represented by a global security that we deposit with and register in the name of a financial institution or its nominee that we select. The financial institution that we select for this purpose is called the depositary. Unless we specify otherwise in the applicable prospectus supplement, DTC will be the depositary for all securities issued in book-entry form.

A global security may not be transferred to or registered in the name of anyone other than the depositary, its nominee or a successor depositary, unless special termination situations arise. We describe those situations below under “Special Situations When a Global Security Will Be Terminated.” As a result of these arrangements, the depositary, or its nominee, will be the sole registered owner and holder of all securities represented by a global security, and investors will be permitted to own only beneficial interests in a global security. Beneficial interests must be held by means of an account with a broker, bank or other financial institution that in turn has an account with the depositary or with another institution that does. Thus, an investor whose security is represented by a global security will not be a holder of the security, but only an indirect holder of a beneficial interest in the global security.

If the prospectus supplement for a particular security indicates that the security will be issued in global form only, then the security will be represented by a global security at all times unless and until the global security is terminated. If termination occurs, we may issue the securities through another book-entry clearing system or decide that the securities may no longer be held through any book-entry clearing system.

The rights of an indirect holder relating to a global security will be governed by the account rules of the investor’s financial institution and of the depositary, as well as general laws relating to securities transfers. We do not recognize an indirect holder as a holder of securities and instead deal only with the depositary that holds the global security.

If securities are issued only in the form of a global security, an investor should be aware of the following:

There may be more than one financial intermediary in the chain of ownership for an investor. We do not monitor and are not responsible for the actions of any of those intermediaries.

In a few special situations described below, the global security will terminate and interests in it will be exchanged for physical certificates representing those interests. After that exchange, the choice of whether to hold securities directly or in street name will be up to the investor. Investors must consult their own banks, brokers or other financial institutions to find out how to have their interests in securities transferred to their own name, so that they will be direct holders. We have described the rights of holders and street name investors above.

Unless we provide otherwise in the applicable prospectus supplement, the global security will terminate when the following special situations occur:

The prospectus supplement may also list additional situations for terminating a global security that would apply only to the particular series of securities covered by the applicable prospectus supplement. When a global security terminates, the depositary, and not we or any applicable trustee, is responsible for deciding the names of the institutions that will be the initial direct holders.

We may sell our securities covered by this prospectus in any of three ways (or in any combination):

Each time we offer and sell securities covered by this prospectus, we will provide a prospectus supplement or supplements that will describe the method of distribution and set forth the terms of the offering, including:

Any public offering price and any discounts or concessions allowed or reallowed or paid to dealers may be changed from time to time. We may determine the price or other terms of the securities offered under this prospectus by use of an electronic auction. We will describe how any auction will determine the price or any other terms, how potential investors may participate in the auction and the nature of the obligations of the underwriter, dealer or agent in the applicable prospectus supplement.

Underwriters or dealers may offer and sell the offered securities from time to time in one or more transactions, including negotiated transactions, at a fixed public offering price or at varying prices determined at the time of sale. If underwriters or dealers are used in the sale of any securities, the securities will be acquired by the underwriters or dealers for their own account and may be resold from time to time in one or more transactions described above. The securities may be either offered to the public through underwriting syndicates represented by managing underwriters, or directly by underwriters or dealers. Generally, the underwriters’ or dealers’ obligations to purchase the securities will be subject to certain conditions precedent. The underwriters or dealers will be obligated to purchase all of the securities if they purchase any of the securities, unless otherwise specified in the prospectus supplement. We may use underwriters with whom we have a material relationship. We will describe the nature of any such relationship in the prospectus supplement, naming the underwriter.

We may sell the securities through agents from time to time. The prospectus supplement will name any agent involved in the offer or sale of the securities and any commissions we pay to them. Generally, any agent will be acting on a best efforts basis for the period of its appointment. We may authorize underwriters, dealers or

agents to solicit offers by certain purchasers to purchase the securities from us at the public offering price set forth in the prospectus supplement pursuant to delayed delivery contracts providing for payment and delivery on a specified date in the future. The contracts will be subject only to those conditions set forth in the prospectus supplement, and the prospectus supplement will set forth any commissions we pay for solicitation of these contracts.

Agents, dealers and underwriters may be entitled to indemnification by us against certain civil liabilities, including liabilities under the Securities Act, or to contribution with respect to payments which the agents, dealers or underwriters may be required to make in respect thereof. Agents, dealers and underwriters may be customers of, engage in transactions with, or perform services for us in the ordinary course of business.

All securities we may offer, other than common stock, will be new issues of securities with no established trading market. Any underwriters may make a market in these securities, but will not be obligated to do so and may discontinue any market making at any time without notice. We cannot guarantee the liquidity of the trading markets for any securities.

Any underwriter may engage in overallotment, stabilizing transactions, short covering transactions and penalty bids in accordance with Regulation M under the Exchange Act. Overallotment involves sales in excess of the offering size, which create a short position. This short sales position may involve either “covered” short sales or “naked” short sales. Covered short sales are short sales made in an amount not greater than the underwriters’ over-allotment option to purchase additional securities in this offering described above. The underwriters may close out any covered short position either by exercising their over-allotment option or by purchasing securities in the open market. To determine how they will close the covered short position, the underwriters will consider, among other things, the price of securities available for purchase in the open market, as compared to the price at which they may purchase securities through the over-allotment option. Naked short sales are short sales in excess of the over-allotment option. The underwriters must close out any naked short position by purchasing securities in the open market. A naked short position is more likely to be created if the underwriters are concerned that, in the open market after pricing, there may be downward pressure on the price of the securities that could adversely affect investors who purchase securities in this offering. Stabilizing transactions permit bids to purchase the underlying security for the purpose of fixing the price of the security so long as the stabilizing bids do not exceed a specified maximum. Penalty bids permit the underwriters to reclaim a selling concession from a dealer when the securities originally sold by the dealer are purchased in a covering transaction to cover short positions.

Similar to other purchase transactions, an underwriter’s purchase to cover the syndicate short sales or to stabilize the market price of our securities may have the effect of raising or maintaining the market price of our securities or preventing or mitigating a decline in the market price of our securities. As a result, the price of our securities may be higher than the price that might otherwise exist in the open market. The imposition of a penalty bid might also have an effect on the price of the securities if it discourages resales of the securities.

Neither we nor the underwriters makes any representation or prediction as to the effect that the transactions described above may have on the price of the securities. If such transactions are commenced, they may be discontinued without notice at any time.

The validity of the securities being offered hereby will be passed upon for us by Cooley LLP, San Diego, California.

The consolidated financial statements appearing in our Annual Report (Form 10-K) for the year ended December 31, 2009 (including the schedule appearing therein), and the effectiveness of our internal control over financial reporting as of December 31, 2009 have been audited by Ernst & Young LLP, independent registered public accounting firm, as set forth in their reports thereon (which contains an explanatory paragraph describing conditions that raise substantial doubt about our ability to continue as a going concern as described in Note 2 to the consolidated financial statements), included therein, and incorporated herein by reference. Such consolidated financial statements are incorporated herein by reference in reliance upon such reports given on the authority of such firm as experts in accounting and auditing.

We file annual, quarterly and current reports, proxy statements and other information with the SEC. You may read and copy any document we file with the SEC at the SEC’s public reference room at 100 F Street, N.E., Washington, D.C., 20549. Please call the SEC at 1.800.SEC.0330 for further information on the operation of the public reference room. Our SEC filings are also available to the public at the SEC’s website at http://www.sec.gov.

The SEC allows us to “incorporate by reference” the information we file with it, which means that we can disclose important information to you by referring you to those documents instead of having to repeat the information in this prospectus. The information incorporated by reference is considered to be part of this prospectus, and later information that we file with the SEC will automatically update and supersede this information. We incorporate by reference the documents listed below and any future filings we will make with the SEC under Sections 13(a), 13(c), 14, or 15(d) of the Exchange Act after the date of the initial registration statement, of which this prospectus is a part until the termination of the offering of the shares covered by this prospectus (other than information furnished under Item 2.02 or Item 7.01 of Form 8-K):

You can request a copy of these filings, at no cost, by writing or telephoning us at the following address or telephone number:

This prospectus is part of a registration statement we filed with the SEC. That registration statement and the exhibits filed along with the registration statement contain more information about us and the securities in this offering. Because information about documents referred to in this prospectus is not always complete, you should read the full documents which are filed as exhibits to the registration statement. You may read and copy the full registration statement and its exhibits at the SEC’s public reference rooms or its website.



	PER SHARE		TOTAL
Public Offering Price	$	6.00	$	84,000,000
Underwriting Discounts and Commissions	$	0.36	$	5,040,000
Proceeds to Sequenom (Before Expenses)	$	5.64	$	78,960,000


	Per Share	Total Without Option to Purchase Additional Shares		Total With Option to Purchase Additional Shares

Public offering price	$6.00	$	84,000,000	$	96,600,000

Underwriting discounts and commissions paid by us	$0.36	$	5,040,000	$	5,796,000

Proceeds to us, before expenses	$5.64	$	78,960,000	$	90,804,000


	Page
Prospectus Supplement
About this Prospectus Supplement		S-ii
Prospectus Supplement Summary		S-1
Risk Factors		S-7
Forward-Looking Statements		S-31
Use of Proceeds		S-32
Dividend Policy		S-32
Dilution		S-33
Underwriting		S-34
Notice to Investors		S-37
Legal Matters		S-40
Experts		S-40
Where You Can Find More Information		S-40
Incorporation of Certain Information by Reference		S-40

	Page
Prospectus
About this Prospectus		i
Summary		1
Risk Factors		7
Forward-Looking Statements		7
Financial Ratios		8
Use of Proceeds		8
Description of Capital Stock		9
Description of Debt Securities		15
Description of Warrants		22
Description of Units		24
Legal Ownership of Securities		26
Plan of Distribution		30
Legal Matters		32
Experts		32
Where You Can Find More Information		32
Incorporation of Certain Information by Reference		33


Public offering price per share		$	6.00
Net tangible book value per share of as September 30, 2010	$0.22
Increase in net tangible book value per share attributable to investors purchasing our common stock in this offering	0.84

As adjusted net tangible book value per share after this offering			1.06

Dilution per share to investors purchasing our common stock in this offering		$	4.94


Underwriter	Number of Shares
Jefferies & Company, Inc.		9,800,000
Lazard Capital Markets LLC		2,100,000
Piper Jaffray & Co.		2,100,000

Total		14,000,000