##### Table of Contents





UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K



|þ | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ------------------------------------------------------------------------------------

For the fiscal year ended December 31, 2010

Commission file number: 1-33818





ENTEROMEDICS
INC.

(Exact name of registrant as specified in its charter)



|                                               |  |                                  
|---------------------------------------------- |  | ---------------------------------
|Delaware                                       |  | 48-1293684                       
|(State or other jurisdiction of incorporation) |  | (IRS Employer Identification No.)

2800 Patton Road, St. Paul, Minnesota 55113

(Address of principal
executive offices, including zip code)

(651) 634-3003

(Registrants telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:







|                                        |  |                                     
|--------------------------------------- |  | ------------------------------------
|Title of Class                          |  | Name of Exchange on Which Registered
|Common stock, $0.01 par value per share |  | The NASDAQ Capital Market           

Securities registered pursuant to Section 12(g) of the Act:

None





Indicate by
check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes   ̈    No  þ

Indicate by check mark if the registrant is not required to file reports pursuant
to Section 13 or Section 15(d) of the Exchange Act.    Yes   ̈    No  þ

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the
Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past
90 days.    Yes  þ    No   ̈

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

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and
will not be contained, to the best of registrants knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.   ̈

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



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

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

At June 30, 2010, the last business day of the registrants most recently completed second fiscal quarter, the aggregate market
value of the registrants common stock held by non-affiliates of the registrant, based upon the closing price of a share of the registrants common stock as reported by the NASDAQ Capital Market on that date was $10,825,173.

As of February 28, 2011, 27,892,388 shares of the registrants Common Stock were outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Specified portions of the registrants Definitive Proxy Statement, which will be filed with the Commission pursuant to Regulation 14A in connection with the registrants 2011 Annual Meeting
of Stockholders, to be held May 5, 2011 (the Proxy Statement), are incorporated by reference into Part III of this report. Except with respect to information specifically incorporated by reference in this report, the Proxy Statement is not
deemed to be filed as a part hereof.









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ENTEROMEDICS INC.

FORM 10-K

TABLE OF CONTENTS



|           |  |                                                                                                               |     |  |     | 
|---------- |  | ------------------------------------------------------------------------------------------------------------- | --- |  | --- | 
|PART I     |  |                                                                                                               |     | 
|           |  |                                                                                                              
|Item 1.    |  | Business                                                                                                      |     |  | 1   | 
|Item 1A.   |  | Risk Factors                                                                                                  |     |  | 24  | 
|Item 1B.   |  | Unresolved Staff Comments                                                                                     |     |  | 41  | 
|Item 2.    |  | Properties                                                                                                    |     |  | 41  | 
|Item 3.    |  | Legal Proceedings                                                                                             |     |  | 41  | 
|Item 4.    |  | Reserved                                                                                                      |     |  | 41  | 
|           | 
|PART II    |  |                                                                                                               |     | 
|           |  |                                                                                                              
|Item 5.    |  | Market for Registrants Common Equity, Related Stockholder Matters and Issuer Purchases of Equity
 Securities |     |  | 42  | 
|Item 6.    |  | Selected Financial Data                                                                                       |     |  | 46  | 
|Item 7.    |  | Managements Discussion and Analysis of Financial Condition and Results of
Operations                         |     |  | 47  | 
|Item 7A.   |  | Quantitative and Qualitative Disclosure about Market Risk                                                     |     |  | 59  | 
|Item 8.    |  | Financial Statements and Supplementary Data                                                                   |     |  | 60  | 
|Item 9.    |  | Changes in and Disagreements with Accountants on Accounting and Financial
Disclosure                          |     |  | 103 | 
|Item 9A.   |  | Controls and Procedures                                                                                       |     |  | 103 | 
|Item 9B.   |  | Other Information                                                                                             |     |  | 104 | 
|           | 
|PART III   |  |                                                                                                               |     | 
|           |  |                                                                                                              
|Item 10.   |  | Directors, Executive Officers and Corporate Governance                                                        |     |  | 105 | 
|Item 11.   |  | Executive Compensation                                                                                        |     |  | 105 | 
|Item 12.   |  | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder
Matters                |     |  | 105 | 
|Item 13.   |  | Certain Relationships and Related Transactions, and Director Independence                                     |     |  | 106 | 
|Item 14.   |  | Principal Accountant Fees and Services                                                                        |     |  | 106 | 
|           | 
|PART IV    |  |                                                                                                               |     | 
|           |  |                                                                                                              
|Item 15.   |  | Exhibits, Financial Statements and Financial Statement Schedules                                              |     |  | 107 | 
|           | 
|SIGNATURES |  |                                                                                                               | 108 | 
|           | 
|EXHIBITS   |  |                                                                                                               |     | 

Registered Trademarks and Trademark
Applications:    In the United States we have registered trademarks for VBLOC® and
ENTEROMEDICS®, each registered with the United States Patent and Trademark Office, an approved Statement of Use
for MAESTRO® and have received a fifth extension of time to file a Statement of Use on our application to
register the mark EMPOWER. In addition, the marks VBLOC, MAESTRO and ENTEROMEDICS are the subject of either a trademark registration or application for registration in Australia, Brazil, China, the European Community, Saudi
Arabia and VBLOC is registered in Switzerland. The trademarks VBLOC, ENTEROMEDICS and MAESTRO SYSTEM ORCHESTRATING OBESITY SOLUTIONS are registered in Mexico. The trademarks VBLOC, ENTEROMEDICS and MAESTRO SYSTEM are the subject of pending
trademark applications in the United Arab Emirates. This Form 10-K contains other trade names and trademarks and service marks of EnteroMedics and of other companies.



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PART I.



|ITEM 1. | BUSINESS
|------- | --------

This Annual Report on Form 10-K contains forward-looking statements. These forward-looking statements are based on our current expectations about our business and industry. In some cases, these
statements may be identified by terminology such as may, will, should, expects, could, intends, might, plans, anticipates,
believes, estimates, predicts, potential, or continue, or the negative of such terms and other comparable terminology. These statements involve known and unknown risks and uncertainties
that may cause our results, levels of activity, performance or achievements to be materially different from those expressed or implied by the forward-looking statements. Factors that may cause or contribute to such differences include, among others,
those discussed in this report in Item 1A Risk Factors. Except as may be required by law, we undertake no obligation to update any forward-looking statement to reflect events after the date of this report.

Overview

We are a
clinical development stage medical device company focused on the design and development of devices that use neuroblocking technology to treat obesity, its associated co-morbidities, and other gastrointestinal disorders. Our proprietary neuroblocking
technology, which we refer to as VBLOC therapy, is designed to intermittently block the vagus nerve using high-frequency, low-energy, electrical impulses. The vagus nerve controls much of the activity of the stomach, intestines and pancreas and
plays a role in food processing. Our initial product under development is the Maestro System, which uses VBLOC therapy to limit the expansion of the stomach, helps control hunger sensations between meals, reduces the frequency and intensity of
stomach contractions and produces a feeling of early and prolonged fullness. Based on our understanding of vagal nerve function and nerve blocking from our preclinical studies and the results of our initial clinical trials, we believe the Maestro
System may offer obese patients a minimally-invasive treatment alternative that has the potential to result in significant and sustained weight loss. In addition, data from sub-group analyses demonstrate that VBLOC therapy may hold promise in
improving the obesity-related co-morbidities of diabetes and hypertension.

We are currently evaluating the Maestro System in
human clinical trials conducted in the United States, Australia, Mexico, Norway and Switzerland. To date, we have not observed any mortality related to our device or any unanticipated adverse device effects in these clinical trials. We have also not
observed any long-term problematic clinical side effects in any patients, including in those patients who have been using the Maestro System for more than one year.

On October 2, 2009, we announced preliminary results from our pivotal clinical study, the EMPOWER trial; indicating that based on an initial analysis, the study did not meet its primary and secondary
efficacy endpoints in that the weight loss for the treatment arm was not statistically different from the control arm in which therapy was turned off. The study did meet its safety endpoint. Our further review of the data suggests that:



| | 1) | Patients that used the device for the prescribed amount of time (39 hours) had clinically meaningful weight-loss;
| | -- | -----------------------------------------------------------------------------------------------------------------



| | 2) | Both the treatment and control arm subjects experienced comparable, significant, dose-dependent excess weight loss (EWL) at 12 months; and
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------



| | 3) | There was an unanticipated therapeutic effect in which a low-intensity blocking signal introduced VBLOC therapy in human subjects in the control group.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------

In January 2010, we met with the U.S. Food and Drug Administration (FDA) to discuss the EMPOWER trial results
and the regulatory process going forward. Based on this discussion, in March we submitted an IDE for a pivotal trial of our second generation fully implantable Maestro Rechargeable (RC) System. In October



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2010, we received an unconditional approval from the FDA for this trial, the ReCharge trial, a randomized, double-blind, parallel-group, multicenter pivotal clinical trial in 234 morbidly obese
subjects enrolled at up to 12 U.S. centers. The control group will receive a functional, but non-active device without implanted leads that will deliver no charge to the vagus nerve during the study period. We plan to initiate this trial in the
second half of 2011 and assuming that we successfully enroll and implant the trial and achieve favorable results, we plan to use data from that trial to support a premarket approval (PMA) application for the Maestro RC System. If the FDA grants us
approval, we anticipate we will be able to commercialize the Maestro System in the United States in late 2013 at the earliest.

If and when we obtain FDA approval of our Maestro System we intend to market our products in the United States through a direct sales
force supported by field technical and marketing managers who provide training, technical and other support services to our customers. Outside the United States we intend to use direct, dealer and distributor sales models as the targeted geography
best dictates. To date, we have relied on third-party manufacturers and suppliers for the production of our Maestro System. We currently anticipate that we will continue to rely on third-party manufacturers and suppliers for the production of the
Maestro System.

We obtained European CE Mark approval for our Maestro RF System on March 4, 2009 and are currently
pursuing CE Mark certification for our Maestro RC System. We plan to commercialize the Maestro RC System in Australia and intend to file an application for approval and listing with the Australian Therapeutic Goods Administration (TGA) upon
receiving CE Mark certification for the Maestro RC System. We also are exploring commercialization opportunities in other markets outside of the United States and Australia. The method of assessing conformity with applicable regulatory requirements
varies depending on the class of the device, but for our Maestro System (which falls into Class III), the method involves a combination of self-assessment by the manufacturer of the safety and performance of the device, and a third-party assessment
by a Notified Body, usually of the design of the device and of the manufacturers quality system. We use DEKRA Certification Inc. (formerly known as KEMA Quality) in the Netherlands as the Notified Body for our CE marking approval process.

The Obesity Epidemic

Obesity has been identified by the U.S. Surgeon General as the fastest growing cause of disease and death in the United States. In 1980, approximately 15% of the adult population in the United States was
obese according to National Health and Nutrition Examination Survey. By 2005, the incidence of obesity had more than doubled to 33%. Currently, the Centers for Disease Control and Prevention (CDC) estimates that there are more than 72 million
obese adults in the United States, having a Body Mass Index (BMI) of 30 or higher. BMI is calculated by dividing a persons weight in kilograms by the square of their height in meters. It is estimated that by 2015, over 40% of American adults
could be obese. Obesity is also a significant health problem outside of the United States, with as many as 400 million people worldwide estimated to be obese and 1.6 billion adults estimated to be overweight, according to the World Health
Organization (WHO). WHO predicts that approximately 2.3 billion adults will be overweight and more than 700 million people worldwide will be obese by 2015.

The CDC has identified obesity as a leading public health threat in the United States and has estimated that there are approximately 112,000 obesity-related deaths each year in the United States. WHO has
estimated that about 2.5 million deaths worldwide are attributed to people being overweight or obese. According to data from the U.S. Department of Health and Human Services, almost 80% of adults with a BMI above 30 have an obesity-related
disease or disorder, also called a co-morbidity, and almost 40% have two or more of these co-morbidities. According to the North American Association for the Study of Obesity and the CDC, obesity is associated with many significant weight-related
co-morbidities including Type 2 diabetes, high blood-pressure, sleep apnea, certain cancers, high cholesterol, coronary artery disease, osteoarthritis and stroke. In addition, a number of disorders involving the central nervous system may also
be complicated by obesity, such as anxiety, bipolar disorder, agoraphobia, depression and insomnia. As of 2000, the Department of Health and Human Services estimated the overall economic costs of obesity in the United States to be $117 billion per
year. In an abstract sponsored and co-authored by the CDC, it was noted that in 2008 these costs could have risen to $147 billion per year.



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In Australia, 62% of all adults are either overweight (37%) or obese (25%) and by
2025 as many as 7.2 million Australians could be obese. The cost of obesity exceeds $21 billion annually and the current Federal Minister has elevated obesity to a national priority. The rate of bariatric surgical procedures performed in
Australia has grown by 800% over the last decade with approximately 13,900 bariatric surgeries performed in Australia in 2008 (less than 2% of that total are gastric bypass).

We believe that the obesity epidemic will continue to grow worldwide given dietary trends in developed nations that favor highly processed sugars, larger meals and fattier foods, as well as increasingly
sedentary lifestyles. Despite the growing obesity rate, increasing public interest in the obesity epidemic and significant medical repercussions and economic costs associated with obesity, there continues to be a significant unmet need for more
effective treatments. We believe existing options for the treatment of obesity have seen limited adoption to date due to a range of efficacy and potential side effects including morbidity. The principal treatment alternatives available today for
obesity include:

Behavioral modification.Behavioral modification, which includes
diet and exercise, is an important component in the treatment of obesity; however, most obese patients find it difficult to achieve and maintain significant weight loss with a regimen of diet and exercise alone.

Pharmaceutical therapy.Pharmaceutical therapies often represent a first option in the
treatment of obese patients within lower BMI ranges but carry significant safety risks and may present troublesome side effects.

Bariatric surgery.In more severe cases of obesity, patients may pursue more aggressive surgical treatment options such as gastric bypass, sleeve gastrectomy
and gastric banding. These procedures promote weight loss by surgically restricting the stomachs capacity and outlet size. While largely effective, they may present substantial side effects and carry short- and long-term safety risks that have
limited their adoption.

Given the limitations of behavioral modification, pharmaceutical therapy and bariatric surgical
approaches, we believe there is a substantial need for a safer and more effective solution that:



| |  |  | preserves normal anatomy;
| | - |  | -------------------------



| |  |  | is non-punitive in that it supports continued ingestion and digestion of foods and micronutrients such as vitamins and minerals found in a
typical, healthy diet while allowing the user to modify his or her eating behavior appropriately without inducing punitive physical restrictions that physically force a limitation of food intake;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | enables non-invasive adjustability while reducing the need for frequent clinic visits;
| | - |  | --------------------------------------------------------------------------------------



| |  |  | minimizes unpleasant side-effects such as persistent vomiting;
| | - |  | --------------------------------------------------------------



| |  |  | minimizes the risks of re-operations, malnutrition and mortality; and
| | - |  | ---------------------------------------------------------------------



| |  |  | reduces the natural hunger drive of patients.
| | - |  | ---------------------------------------------

EnteroMedics Solution

The vagus nerve controls much of the activity
of the stomach, intestine and pancreas and plays a significant role in food processing. By intermittently blocking, or interrupting, naturally occurring neural impulses on the vagus nerve, our therapy is designed to reduce hunger feelings between
meals, limit the expansion of the stomach during eating and reduce the frequency and intensity of stomach contractions. In addition, we believe VBLOC therapy also reduces the absorption of calories by decreasing the secretion of digestive enzymes.
The resulting physiologic effects of VBLOC therapy are intended to produce a feeling of early and prolonged fullness following smaller meal portions and, by intermittently blocking the vagus nerve and allowing it to return to full function between
therapeutic episodes, we have limited the bodys natural tendency to circumvent the therapy, all of which we believe will result in long-term weight loss.



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We have designed our Maestro System to address a significant market opportunity that exists
for a safe, effective and less-invasive therapy that is intended to address the underlying causes of hunger and obesity. Our Maestro System is designed to offer each of the following benefits, which we believe will lead to the adoption of VBLOC as
the therapy of choice for obesity:



| |  |  | preserves normal anatomy;
| | - |  | -------------------------



| |  |  | allows continued ingestion and digestion of most foods;
| | - |  | -------------------------------------------------------



| |  |  | may be implanted on an outpatient basis and adjusted non-invasively;
| | - |  | --------------------------------------------------------------------



| |  |  | offers a favorable safety profile; and
| | - |  | --------------------------------------



| |  |  | targets multiple factors that contribute to hunger and obesity.
| | - |  | ---------------------------------------------------------------

The Vagus Nerve and the Digestive System

Beginning in the brain, the vagus nerve travels down alongside the esophagus to the stomach and other gastrointestinal organs and is primarily responsible for autonomic regulation involved in heart, lung
and gastrointestinal function. The vagus nerve controls much of the activity of the stomach, intestine and pancreas and plays a role in food processing, including:



| |  |  | expansion of the stomach as food enters;
| | - |  | ----------------------------------------



| |  |  | contractions of the stomach to break food into smaller particles;
| | - |  | -----------------------------------------------------------------



| |  |  | release of gastric acid required for food processing;
| | - |  | -----------------------------------------------------



| |  |  | emptying of the stomach contents into the small intestine;
| | - |  | ----------------------------------------------------------



| |  |  | secretion of digestive pancreatic enzymes that enable absorption of calories; and
| | - |  | ---------------------------------------------------------------------------------



| |  |  | controlling sensations of hunger, satisfaction and fullness.
| | - |  | ------------------------------------------------------------

VBLOC Therapy

Several studies of the vagus nerve and its effect on the digestive system have focused on the effects of surgical vagotomy, the permanent severing of the vagus nerve at the level of the junction between
the esophagus and the stomach. Given the role of the vagus nerve in regulating the release of gastric acid, early researchers originally used vagotomy as a treatment for peptic ulcers. They discovered that their patients often experienced weight
loss or, at a minimum, failure to gain weight following vagotomy. However, weight loss after vagotomy alone has been disappointing, particularly over the long-term and likely dissipates as the body compensates for the anatomical disruption by
partial restoration of nervous system function.

VBLOC therapy is designed to block the gastrointestinal effects of the vagus
nerve by using high-frequency, low-energy electrical impulses to intermittently interrupt naturally occurring neural impulses on the vagus nerve between the brain and the digestive system. Our therapy is designed to control hunger sensations between
meals, limit the expansion of the stomach and reduce the frequency and intensity of stomach contractions. In addition, we believe VBLOC therapy also reduces the absorption of calories by decreasing the secretion of digestive enzymes. The resulting
physiologic effects of VBLOC therapy are intended to produce a feeling of early and prolonged fullness following smaller meal portions. By intermittently blocking the vagus nerve and allowing it to return to full function between therapeutic
episodes, we believe we have limited the bodys natural tendency to circumvent the therapy, which can result in long-term weight loss.

We have designed our Maestro System to address a significant market opportunity that we believe exists for a safe, effective and less-invasive therapy that is intended to address the underlying causes of
hunger and obesity.



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Our Maestro System is designed to offer each of the following benefits, which we believe could lead to the adoption of VBLOC as the therapy of choice for obesity:



| |  |  | Preserves Normal Anatomy.    The Maestro neuroblocking pulse generator is designed to deliver therapy that blocks the
neural signals that influence a patients hunger and sense of fullness without altering digestive system anatomy. Accordingly, patients should experience fewer and less severe side effects compared to treatments that incorporate anatomical
alterations.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Allows Continued Ingestion and Digestion of Foods Found in a Typical, Healthy Diet.    Because our therapy leaves the
digestive anatomy unaltered, we believe that patients will be able to maintain a more consistent nutritional balance compared to existing surgical approaches, thus allowing them to effect positive changes in their eating behavior in a non-forced and
potentially more consistent way.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | May be Implanted on an Outpatient Basis and Adjusted Non-Invasively.    The Maestro System is designed to be
laparoscopically implanted in approximately one hour, allowing patients to leave the hospital or clinic on the same day. The implantable system is designed to be turned off and left in place for patients who reach their target weight. When desired,
the follow-up physician can simply and non-invasively turn the therapy back on. Alternatively, the implantable system can be removed in a laparoscopic procedure.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Offers Favorable Safety Profile.    We have designed our ReCharge and EMPOWER clinical trials to demonstrate the
safety of the Maestro System. In our clinical trials to date, including the EMPOWER trial, we have not observed any mortality related to our device or any medically serious device related adverse events that have required surgical attention in the
patients we have implanted with the Maestro System. We have also not observed any long-term problematic clinical side effects in any patients, including in those patients who have been using the Maestro System for more than one year.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Targets Multiple Factors that Contribute to Hunger and Obesity.    We designed VBLOC therapy to target the multiple
digestive functions of the vagus nerve and to affect the perception of hunger and fullness, which together contribute to obesity.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

VBLOC therapy, delivered via our Maestro System, is intended to offer patients what we believe could be an effective, safe, outpatient solution that minimizes complications. We believe that if approved it
could enable patients to lose weight and maintain long-term weight loss while enjoying a normal, healthy diet. We also believe that the Maestro System, if approved, will appeal to physicians based on the inherent physiological approach of VBLOC
therapy and its anticipated favorable safety profile.

Our Strategy

Our goal is to establish VBLOC therapy, delivered via our Maestro System pulse generator, as the leading obesity management solution. The
key business strategies by which we intend to achieve these objectives include:

Achieve Regulatory Approval for VBLOC
Therapy Using Our Maestro System.    We received an IDE from the FDA for use of the Maestro System in the United States in our EMPOWER trial, and announced on October 2, 2009 that based on an initial analysis, the
study did not meet its primary and secondary efficacy endpoints. We further announced on November 12, 2009, the ongoing detailed review suggests that vagal blocking therapy may promote safe and effective weight loss as an adjunct to behavioral
support, diet and exercise in morbidly obese patients. The review further suggests that these effects were evident in both the treatment and control arms. We are continuing a comprehensive analysis of all clinical, statistical, and engineering data
to understand this finding. Based on the analysis to date, the control arm of the trial, which, to help ensure patient safety delivered low-level safety and diagnostic check electrical signals to the system which were intended to be inactive,
apparently provided a low-intensity blocking signal that introduced VBLOC therapy in human subjects. After meeting with the FDA in January 2010 to discuss the EMPOWER trial results and the regulatory process going forward, we submitted an IDE
application for a clinical trial using the Maestro RC System in the treatment of morbid obesity. In October 2010, we received an unconditional approval to



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proceed with the trial of our Maestro RC System, called the ReCharge trial. Assuming that we successfully enroll and implant the trial and achieve favorable results, we plan to use data from that
trial to pursue a PMA from the FDA to allow us to commence sales in the United States. We have also received the European CE Mark for our Maestro RF System and are currently pursuing CE Mark certification for our Maestro RC System to enable the
eventual commercialization of our systems in the European Economic Area. We plan to commercialize the Maestro RC System in Australia and intend to file an application for approval and listing with the Australian Therapeutic Goods Administration
(TGA) upon receiving CE Mark certification for the Maestro RC System. We also are exploring commercialization opportunities in other markets outside of the United States and Australia. The method of assessing conformity with applicable regulatory
requirements varies depending on the class of the device, but for our Maestro System (which falls into Class III), the method involved a combination of self-assessment by the manufacturer of the safety and performance of the device, and a
third-party assessment by a Notified Body, usually of the design of the device and of the manufacturers quality system. We used DEKRA Certification Inc. (formerly known as KEMA Quality) in the Netherlands as the Notified Body for our CE
marking approval process.

Drive the Adoption and Endorsement of VBLOC Therapy Through Obesity Therapy
Experts.    Our clinical development strategy is to collaborate closely with regulatory bodies, obesity therapy experts and scientific experts. We have established credible and open relationships with obesity therapy
experts and scientific experts and we believe these obesity therapy experts and scientific experts will be important in promoting patient awareness and gaining widespread adoption if the Maestro System is approved and commercialized.

Commercialize Our Products using a Distribution Network outside the United States.    We plan to
utilize specialized third-party medical device distributors in Australia and other non-U.S. markets to call directly on key opinion leaders and bariatric surgeons, which we believe will enable us to target them effectively. We expect that our
distributors sales force will promote the Maestro System to physicians, work with our surgeon partners, such as the Australian Institute of Weight Control (AIWC), provide training and maintain regulatory required records. They will also work
with patients who have concerns with current bariatric surgical procedures. We also plan to call on physicians, weight-management specialists and nurses who influence patient adoption.

Commercialize Our Products using a Direct Sales and Marketing Effort within the United States.    We
plan to build a sales force to call directly on key opinion leaders and bariatric surgeons, primarily within bariatric Centers of Excellence. We believe this currently represents over 400 facilities within the United States, which we believe will
enable us to target them effectively with a small sales force. We expect that our direct sales force will promote the Maestro System to physicians and patients who have concerns with current bariatric surgical procedures. We also plan to call on
physicians, weight-management specialists and nurses who influence patient adoption.

Identify Appropriate Coding,
Obtain Coverage and Payment for the Maestro System.    While payors are not our direct customers, their coverage and reimbursement policies influence patient and physician selection of obesity treatment. We plan to
employ a focused campaign to obtain payor support for VBLOC therapy. We plan to seek specific and appropriate coding, coverage and payment for our Maestro System from the Australia Medical Services Advisory Committee (MSAC) and the U.S. Centers for
Medicare and Medicaid Services (CMS) and from private insurers.

Expand and Protect Our Intellectual Property
Position.    We believe that our issued patents and our patent applications encompass a broad platform of neuromodulation therapies, including vagal blocking and combination therapy focused on obesity and other
gastrointestinal disorders. We intend to continue to pursue further intellectual property protection through U.S. and foreign patent applications.

Leverage our VBLOC Technology for Other Disease States.    We intend to continue to conduct research and development for other potential applications for our VBLOC
therapy and believe we have a broad technology platform that will support the development of additional clinical applications and therapies for other gastrointestinal disorders in addition to obesity.



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The Maestro System, Implantation Procedure and Usage

The Maestro System.    Our Maestro System pulse generator delivers VBLOC therapy via two small electrodes that
are laparoscopically implanted and placed in contact with the trunks of the vagus nerve just above the junction between the esophagus and the stomach, near the diaphragm. We are developing the Maestro System in two different energy configurations,
the Maestro RF System and the Maestro RC System. The Maestro RF System is the device being used in our EMPOWER trial, which we announced on October 2, 2009 did not meet its primary and secondary efficacy endpoints.

LOGO

The major components of the Maestro System include:



| |  |  | Neuroregulator.    The neuroregulator, sometimes referred to as a neuroblocking pulse generator, is an implanted
device that controls the delivery of VBLOC therapy to the vagus nerve. It is surgically implanted just below, and parallel to, the skin, typically on the side of the body over the ribs. The neuroregulator emits short, charge-balanced electrical
pulses at a high pulse rate that travel down the leads to the electrodes and intermittently block natural nerve signals on the vagus nerve.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Lead system.    Our neuroblocking leads are powered by the neuroregulator and deliver electrical pulses to the vagus
nerve via the electrodes. The leads and electrodes are similar to those used in traditional cardiac rhythm management and some neurostimulation products, are intended to be implanted and may be removed laparoscopically.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Controller/Mobile charger.    Our controller regulates the rate and intensity of the electrical pulses delivered by
the neuroregulator and maintains a log of device and treatment changes. In the Maestro RF System, the controller is an external unit. In the Maestro RC System, the external controller is replaced by an external mobile charger and the control logic
is contained within the implanted neuroregulator.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Transmit coil.    The transmit coil is positioned over the implanted neuroregulator and delivers radiofrequency
battery charging daily for a few minutes and therapy programming information across the skin into the device. The coil is held in position over the neuroregulator for these short periods of time with an adjustable elastic belt.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Clinician programmer.    The clinician programmer connects to the controller to enable clinicians to customize
therapy settings as necessary and download reports stored in system components. The reports include patient use and system performance information used to manage therapy. The clinician programmer incorporates our proprietary software and is operated
with a commercially available laptop computer.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Our Maestro System is designed to be implanted by a
bariatric surgeon in approximately one hour during an outpatient procedure that is typically performed using a short-acting general anesthetic. The physician activates



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the Maestro System after a short healing period following implantation. VBLOC therapy is then delivered intermittently (approximately five minutes on and five minutes off
in an alternating pattern) each day during the patients waking hours through the neuroregulator.

We developed the
Maestro System in two different energy configurations, the first generation Maestro RF System, used for the early feasibility trials and the EMPOWER trial, and the second generation Maestro RC System, which is currently in use in the VBLOC DM2
trial, the ReCharge U.S. pivotal trial and will be our commercial device. The Maestro RF System and the Maestro RC System differ in the following ways:



| |  |  | The neuroblocking pulse generator, or neuroregulator, within the Maestro RF System is powered by a battery in the externally-worn controller, which is
connected to the external transmit coil. The transmit coil needs to be properly positioned over the approximately 20 cubic centimeter neuroregulator and worn daily during the patients waking hours to deliver therapy. The controller is
recharged nightly using AC wall power.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The neuroregulator in the Maestro RC System is powered by an internal rechargeable battery. The RC neuroregulator is approximately 80 cubic centimeters
in volume to accommodate its internal battery. An external mobile charger is connected to the external transmit coil to recharge the battery. The mobile charger is recharged using AC wall power.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Implantation Procedure.    The Maestro System is designed to be implanted by a bariatric surgeon in
approximately one hour during an outpatient procedure that will be typically performed using a short-acting general anesthetic. During the procedure, the surgeon laparoscopically implants the electrodes in contact with the vagal nerve trunks and
then connects the lead wires to the neuroregulator. After the electrodes have been attached adjacent to the vagal trunks and connected to the neuroregulator, the surgeon confirms final system operation by sending electrical pulses to the leads by
the neuroregulator. Once system operation has been confirmed, the surgeon implants the neuroregulator under the skin and closes all incisions. We believe that patients who are implanted with the Maestro System will be able to return home from the
hospital or clinic on the same day. The implantation procedure and usage of the Maestro System carry some risks, such as the risks generally associated with laparoscopic procedure as well as the possibility of device malfunction. In addition, in
rare circumstances during implantation, the vagus nerve or esophagus may be damaged causing problems such as difficulty in swallowing, vomiting, heartburn, belching, abdominal fullness or discomfort, diarrhea, or decreased appetite. We expect that
any of these problems would be temporary without lasting effects, although there is the risk of permanent injury to the vagus nerve. Some post-operative effects that may occur after implantation of our Maestro System include movement of the leads or
neuroregulator from their original positions, erosion or wire breakage and potential allergic reaction with internal or external device contacts.

Usage of the Maestro System.    The physician activates the Maestro System shortly after implantation. VBLOC therapy is then delivered intermittently each day during the
patients waking hours through the neuroregulator. The scheduled delivery of the intermittent electrical pulses blocking the vagus nerve is customized for each patient by the physician using the clinician programmer and when necessary, therapy
can also be easily and non-invasively modified by the physician. The physician determines the duration of the therapy in consultation with the patient based on the patients weight loss and overall treatment objectives. Patients using the
Maestro RF System can elect to suspend or circumvent therapy at any time by simply not carrying the controller. Without the controller, the RF neuroregulator receives no power and cannot provide therapy. Patients using the Maestro RC System are more
limited in their ability to suspend or circumvent therapy because the control logic is embedded in the implanted neuroregulator.

The physician is able to download reports to monitor patient use and system performance information. This information is particularly useful to physicians to ensure that patients are properly using the
system. Although usage of our Maestro System generally proceeds without complications, as part of the therapy or intentional weight loss, subjects in our clinical trials have observed side-effects such as heartburn, bloating, diarrhea, sweating,
nausea, constipation, greasy bowel movements, tiredness and excessive feelings of fullness, especially



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after meals. In addition, patient noncompliance with wearing the external components of the Maestro RF System may render VBLOC therapy less effective in achieving long-term weight loss.

Clinical Development

We are developing our Maestro System to deliver VBLOC therapy for the long-term treatment of obesity. Based on our preclinical and clinical findings, we believe that our Maestro System has the potential
to offer a compelling combination of efficacy and safety. We are continuing to evaluate the Maestro System in human clinical studies conducted in the United States and internationally. We announced on October 2, 2009 that based on an initial
analysis, our EMPOWER trial did not meet its primary and secondary efficacy endpoints. We also announced that there were no therapy-related serious adverse events reported during the study. After meeting with the FDA in January 2010 to discuss the
EMPOWER trial results and the regulatory process going forward, we submitted an IDE application for a clinical trial using the second generation Maestro RC System in the treatment of morbid obesity. In October 2010, we received an unconditional
approval from the FDA for this trial, the ReCharge trial.

Preclinical Experience

We have completed several preclinical animal studies, primarily in pigs and rats, to evaluate the safety of our Maestro System and to
refine our implantation procedure. These studies have also shown that VBLOC therapy could completely block activated nerve signals, with the nerve regaining normal function within minutes after each intermittent application of therapy. Over a
12-week period of VBLOC therapy, over 91% of all nerve axons showed normal histology and the animals demonstrated unimpaired heart rate, respiration, blood pressure and glucose regulation. Additionally, we observed that VBLOC therapy resulted in a
greater than 80% reduction in pancreatic exocrine secretions, which are composed of digestive enzymes, water and bicarbonate that facilitate food digestion and caloric intake.

As a result of the findings of our preclinical studies, we were able to refine the implant technique, demonstrate the biocompatibility of our Maestro System in animals and collect the data necessary to
begin human clinical trials. Several publications resulting from these preclinical studies were peer-reviewed and accepted for podium presentation at the Digestive Disease Week meeting in 2006, the American Society for Bariatric Surgery meeting in
2006 and the International Federation for Surgery of Obesity meeting in 2006.

Clinical Experience

We began evaluating VBLOC therapy with our initial Maestro System, the RF1 system, in a clinical trial in February 2006. The first
generation RF2 system is distinguished from the RF1 system by an improved user interface, improvements in the energy management within the neuroregulator and a more robust transmission link for delivering energy from the coil to the neuroregulator
in the RF2 system. The second generation system, the RC system, has a fully implanted battery and requires the user to charge it less frequently than with the RF System. Our early clinical experience has shown that VBLOC therapy using the Maestro
System offers physicians a programmable method to selectively and reversibly block the vagus nerve and results in clinically and statistically significant excess weight loss. Excess weight represents the difference between a subjects actual
weight and the subjects weight assuming a BMI of 25, which is considered healthy. Excess weight loss (EWL) is reported as the percentage of excess weight that is lost by the subject.

We have not observed any mortality related to our device or any medically serious device related adverse events in any of our completed
or ongoing studies. Reported events include those associated with laparoscopic surgery or any implantable electronic device. The effects of VBLOC therapy include changes in appetite, and, in some subjects, effects that may be expected with decreased
intra-abdominal vagus nerve activity, such as temporary abdominal discomfort and short episodes of belching, bloating, cramping or nausea.



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Findings from our clinical feasibility trials have resulted in more than 20 publications
peer-reviewed and accepted for presentation between 2006 and 2010 at the following meetings: Digestive Disease Week, American Society for Metabolic and Bariatric Surgery, International Federation for Surgery of Obesity, Obesity Surgery Society of
Australia & New Zealand and Obesity Society (formerly the North American Association for the Study of Obesity).

Below is a summary of our planned and ongoing clinical studies.

VBLOC-RF2 Trial

Enrollment of 38 subjects in the VBLOC-RF2 trial
began in November 2006. This trial is designed to evaluate the safety and efficacy of the Maestro RF2 System in treating patients with obesity over a period of 60 months. The trial is an international, open-label, prospective, multi-center study. We
are implementing weight management programs and plan to evaluate the efficacy of VBLOC therapy by measuring average percentage EWL at one month, three, six and 12 months and possibly longer. We are using results from this trial to further optimize
selection of VBLOC therapy parameters. Preliminary data indicate that the RF2 system improvements have resulted in improved therapy delivery and improved weight loss. To date, no deaths related to our device or medically serious device related
adverse events have been reported during the VBLOC-RF2 trial. As of October 20, 2010, the most recent follow-up of nine RF2 patients, among the earliest patients implanted in the VBLOC-RF2 trial, showed an EWL of 23.0% at 24 months of VBLOC
therapy in 18 RF2 patients. At that time, the most recent results for the prior follow-up periods demonstrated an EWL of 28.3% in 18 RF2 patients at 18 months and an EWL of 22.6% in 26 RF2 patients at 12 months of VBLOC therapy.

VBLOC-RC Trial

We initiated the VBLOC-RC trial in November 2007. The trial is an international feasibility study designed to demonstrate that the clinical performance of the Maestro RC System in five subjects is similar
to that of the RF2 system. It is also intended to demonstrate that the subject can effectively recharge the implanted RC device and the physician and staff can perform device programming and operation. We are implementing weight management programs
such as diet, behavior modification or exercise programs and plan to evaluate system performance and efficacy by measuring average percentage EWL at one, three and six months. To date, no deaths related to our device or medically serious device
related adverse events have been reported during the VBLOC-RC trial.

VBLOC-DM2 ENABLE Trial

Enrollment of the VBLOC-DM2 ENABLE trial began in the second quarter of 2008 and is designed to evaluate the effects of VBLOC therapy on
glucose regulation and blood pressure using the Maestro RC System in approximately 30 subjects. The trial is an international, open-label, prospective, multi-center study. We plan to evaluate the efficacy of VBLOC therapy by measuring average
percentage EWL, HbA1c (blood sugar) and FPG (fasting plasma glucose) and blood pressure at one week, one month, three, six and 12 months and possibly longer. The Maestro RC System is powered by an internal battery recharged via an external mobile
charger and transmit coil worn by the patient for a short time each week. To date, no deaths related to our device or medically serious device related adverse events have been reported during the VBLOC-DM2 ENABLE trial and the safety profile is
similar to that seen in the other VBLOC trials. As of October 20, 2010 the most recent follow-up of patients shows an average device usage of approximately 14 hours per day and the below data.



| |  |  | HbA1cchange
(Company updated data):
| | - |  | -----------------------------------



|                               |  |             |      |  |               |  |     |   |  |  |    |  |  |  |       | 
|------------------------------ |  | ----------- | ---- |  | ------------- |  | --- | - |  |  | -- |  |  |  | ----- | 
|Visit (post-device activation) |  | HbA1cchange |      |  | Percent HbA1c |  |     | N |  |  | p  | 
|Week 1 (Baseline 7.8%)         |  |             | -0.3 |  |               |  | 7.5 |   |  |  | 28 |  |  |  | 0.002 | 
|Week 4 (Baseline 7.8%)         |  |             | -0.7 |  |               |  | 7.1 |   |  |  | 28 |  |  |  | <.001 | 
|Week 12 (Baseline 7.7%)        |  |             | -0.9 |  |               |  | 6.8 |   |  |  | 26 |  |  |  | <.001 | 
|6 Months (Baseline 7.8%)       |  |             | -0.9 |  |               |  | 6.8 |   |  |  | 25 |  |  |  | <.001 | 
|12 Months (Baseline 7.6%)      |  |             | -1.0 |  |               |  | 6.6 |   |  |  | 25 |  |  |  | <.001 | 



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| |  |  | Percent EWL (BMI Method from implant, Company updated data):
| | - |  | ------------------------------------------------------------



|                               |  |     |       |  |   |  |    |   |  |  |       | 
|------------------------------ |  | --- | ----- |  | - |  | -- | - |  |  | ----- | 
|Visit (post-device activation) |  | EWL |       |  | N |  |    | P | 
|Week 1                         |  |     | -8.9  |  |   |  | 28 |   |  |  | <.001 | 
|Week 4                         |  |     | -13.7 |  |   |  | 28 |   |  |  | <.001 | 
|Week 12                        |  |     | -20.8 |  |   |  | 26 |   |  |  | <.001 | 
|6 Months                       |  |     | -24.4 |  |   |  | 25 |   |  |  | <.001 | 
|12 Months                      |  |     | -25.3 |  |   |  | 25 |   |  |  | <.001 | 



| |  |  | Change in diastolic blood pressure in hypertensive patients (baseline 87.2 mmHg, average) in mmHg:
| | - |  | --------------------------------------------------------------------------------------------------



|                               |  |           |       |  |   |  |    |   |  |  |       | 
|------------------------------ |  | --------- | ----- |  | - |  | -- | - |  |  | ----- | 
|Visit (post-device activation) |  | DBPchange |       |  | N |  |    | p | 
|Week 1                         |  |           | -10.1 |  |   |  | 12 |   |  |  | <.001 | 
|Week 4                         |  |           | -10.2 |  |   |  | 12 |   |  |  | 0.005 | 
|Week 12                        |  |           | -8.9  |  |   |  | 11 |   |  |  | <.001 | 
|6 Months                       |  |           | -13.8 |  |   |  | 10 |   |  |  | <.001 | 
|12 Months                      |  |           | -10.2 |  |   |  | 11 |   |  |  | 0.009 | 



| |  |  | Change in mean arterial pressure in hypertensive patients (baseline 99.5 mmHg, average) in mmHg:
| | - |  | ------------------------------------------------------------------------------------------------



|                               |  |           |       |  |   |  |    |   |  |  |       | 
|------------------------------ |  | --------- | ----- |  | - |  | -- | - |  |  | ----- | 
|Visit (post-device activation) |  | MAPchange |       |  | N |  |    | p | 
|Week 1                         |  |           | -6.8  |  |   |  | 15 |   |  |  | 0.04  | 
|Week 4                         |  |           | -8.6  |  |   |  | 15 |   |  |  | 0.02  | 
|Week 12                        |  |           | -8.9  |  |   |  | 14 |   |  |  | <.001 | 
|6 Months                       |  |           | -12.5 |  |   |  | 13 |   |  |  | <.001 | 
|12 Months                      |  |           | -7.8  |  |   |  | 14 |   |  |  | 0.03  | 

EMPOWER Trial

On October 2, 2009, we announced preliminary results from our pivotal clinical study, the EMPOWER trial;
indicating that based on an initial analysis, the study did not meet its primary and secondary efficacy endpoints in that the weight loss for the treatment arm was not statistically different from the control arm in which therapy was turned off. We
also announced that there were no therapy-related serious adverse events reported during the study. The EMPOWER trial is a multi-center, randomized, double-blind, prospective, placebo-controlled pivotal study including a maximum of 300 subjects at
up to 15 U.S. and international sites. We completed enrollment and implantation of 294 subjects in the EMPOWER trial in 2008.

We further announced on November 12, 2009, the ongoing detailed review suggests that vagal blocking therapy may promote safe and
effective weight loss as an adjunct to behavioral support, diet and exercise in morbidly obese patients. The review further suggests that these effects were evident in both the treatment and control arms with overall study results showing that for
all patients (n=253), the average EWL at 12 months was 16.6% EWL (BMI) from implant (12.1% from initiation, MetLife) for the treatment arm and 16.4% EWL (BMI) from implant (12.0% from initiation, MetLife) for the control arm. The review further
suggests that:



| | 1) | Patients that used the device for the prescribed amount of time (39 hours) had clinically meaningful weight-loss;
| | -- | -----------------------------------------------------------------------------------------------------------------



| | 2) | Both the treatment and control arm subjects experienced comparable, significant, dose-dependent EWL at 12 months; and
| | -- | ---------------------------------------------------------------------------------------------------------------------



| | 3) | There was an unanticipated therapeutic effect in which a low-intensity blocking signal introduced VBLOC therapy in human subjects in the control group.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------



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It is our belief after continuing to analyze the EMPOWER trial data that there is a direct
correlation between weight loss and hours of daily device usage. On January 14, 2010 we announced the below observations and additional data from our ongoing detailed review of the EMPOWER trial.

Weight loss corresponded directly to hours of use for patients in the treatment arm. At 12 months, results were as follows:



|                         |  |              |     |   |                                             |  |      |                                               |  |  |                                       |   |  |  |      |  
|------------------------ |  | ------------ | --- | - | ------------------------------------------- |  | ---- | --------------------------------------------- |  |  | ------------------------------------- | - |  |  | ---- | -
|                         |  | <6 Hours/Day |     |   | Greater- than or Equalto 6 and <9 Hours/Day |  |      | Greater- than or Equalto 9 and <12 
Hours/Day |  |  | Greater- than or Equalto 12 Hours/Day |  
|Percent EWL (BMI Method) |  |              | 4.7 | % |                                             |  | 12.9 | %                                             |  |  | 21.5                                  | % |  |  | 29.5 | %

Weight loss
corresponded directly to hours of use when both the treatment and control arms are combined. At 12 months, results were as follows:



|                                                    |  |                                            |          |   |                    |  |         |   |  |  |         | 
|--------------------------------------------------- |  | ------------------------------------------ | -------- | - | ------------------ |  | ------- | - |  |  | ------- | 
|12 Months from Implant (BMI Method)                 |  | Greater-than orEqual to 9Hours/Day (n=128) |          |   | <9Hours/Day(n=125) |  |         | p | 
|Subjects Achieving Greater-than or Equal to 25% EWL |  |                                            | 39.1     | % |                    |  | 12.0    | % |  |  | <0.0001 | 
|Average Daily Use in Subjects                       |  |                                            | 11.2 hrs |   |                    |  | 7.7 hrs |   |  |  | <0.0001 | 

As of
October 20, 2010 the 24 month EMPOWER EWL was as follows:



|          |  |           |       |   |   |  |     | 
|--------- |  | --------- | ----- | - | - |  | --- | 
|Visit     |  | EWL(mean) |       |   | N | 
|6 Months  |  |           | -17.9 | % |   |  | 271 | 
|12 Months |  |           | -16.3 | % |   |  | 265 | 
|18 Months |  |           | -17.3 | % |   |  | 187 | 
|24 Months |  |           | -19.4 | % |   |  | 159 | 

Interim
analysis. N at 18 and 24 months are patients who have reached those time points.

At 24 months, 71 patients using the
device for 39 hours daily have an average EWL of 22.7%.

The purpose of the
EMPOWER trial was to measure the safety and efficacy of our Maestro System in obese subjects after 12 months of VBLOC therapy. After all subjects completed 12 months of follow up, the trial was unblinded and all subjects, including those in the
control group, had the option to receive ongoing VBLOC therapy. Subjects will continue to be followed out to 60 months as part of the trial and we will continue to monitor average percentage EWL and safety during this extended period.

ReCharge Trial (Maestro RC System)

In January 2010, we met with the FDA to discuss the EMPOWER trial results and the regulatory process going forward. Based on this discussion, we submitted an IDE application for a clinical trial using the
second generation Maestro RC System in the treatment of morbid obesity and in October 2010 we received an unconditional approval to proceed with this trial, the Recharge Trial. The trial will be a randomized, double-blind, parallel-group,
multicenter clinical trial using the Maestro RC System in 234 morbidly obese subjects enrolled at up to 12 U.S. centers. Obesity is a criteria for participation in the trial, and obese patients are known to have higher rates of disease and health
problems than patients with a BMI of 25 or lower. Health conditions unrelated to VBLOC therapy may complicate or confound the assessment of the Maestro Systems safety and effectiveness. All subjects in the study will receive an implanted
device and will be randomized in a 2:1 allocation to treatment or control groups. The control group will receive a functional, but non-active device that will deliver no charge to the vagus nerve during the study period. All subjects are expected to
participate in a weight management program. Assuming that we successfully enroll and implant the trial and achieve favorable



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results, we plan to use data from that trial to support a PMA application for the Maestro System, which we expect to submit no earlier than the fourth quarter of 2012. If the FDA grants us
approval, we anticipate we will be able to commercialize the Maestro System in the United States in late 2013 at the earliest.

Research
and Development

We have an experienced research and development team, including clinical, regulatory affairs and quality,
comprised of scientists, electrical engineers, software engineers and mechanical engineers with significant clinical knowledge and expertise. Our research and development efforts are focused in the following major areas:



| |  |  | identifying the effect of vagal blocking on nerve and organ function;
| | - |  | ---------------------------------------------------------------------



| |  |  | developing the Maestro System; and
| | - |  | ----------------------------------



| |  |  | investigating the Maestro platform for gastrointestinal disorders in addition to obesity.
| | - |  | -----------------------------------------------------------------------------------------

We have spent a significant portion of our capital resources on research and development. Our research and development expenses were $8.5
million in 2010, $15.6 million in 2009 and $27.7 million in 2008. Our research and development expenditures for 2011 and beyond will largely depend on our regulatory path forward. With the approval of the ReCharge trial IDE application we expect
research and development expenditures to increase in support of this new clinical trial in addition to the continued follow-up on existing trials, such as VBLOC-DM2 ENABLE, EMPOWER and RF2.

Other Diseases and Disorders

We believe that our VBLOC therapy may have the potential, if validated through appropriate clinical studies, to treat a number of additional gastrointestinal disorders or co-morbidities frequently
associated with obesity, including the following:



| |  |  | Type 2 Diabetes.    Metabolic syndrome refers to a group of risk factors for cardiovascular disease and Type 2
diabetes mellitus and affects an estimated 50 million people in the United States. We believe that VBLOC therapy has significant potential in treating metabolic syndrome. We have launched an international feasibility trial, VBLOC-DM2 ENABLE, to
further explore the efficacy of VBLOC therapy in this patient population and have reported preliminary findings in the Clinical Development section above.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Hypertension.    Blood pressure normally rises and falls throughout the day. When it consistently stays too high for
too long, it is called hypertension. It is estimated that one out of three American adults has high blood pressure or hypertension. We believe that VBLOC therapy may improve mean systolic and diastolic blood pressure in hypertensive patients. We
have included an evaluation of the blood pressure effects of VBLOC therapy in our international feasibility trial, VBLOC-DM2 ENABLE, to further explore the efficacy of VBLOC therapy in this patient population and have reported preliminary findings
in the Clinical Development section above.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Pancreatitis.    Primary and recurrent cases of acute pancreatitis are estimated to number from 150,000 to 200,000
annually, resulting in approximately 80,000 hospital admissions each year in the United States. In animal and human studies, we have shown that VBLOC therapy suppresses pancreatic exocrine secretion, suggesting its potential efficacy in treating
pancreatitis.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Other Gastrointestinal Disorders.    We believe that VBLOC therapy may have potential in a number of other
gastrointestinal disorders, including irritable bowel syndrome and inflammatory bowel disease.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

None of
these conditions are included in our current IDE and supplemental PMA approval will be required to market the Maestro System for these indications in the United States.



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Mayo Clinic Relationship

Our research and development team works with clinicians from Mayo Clinic Rochester, Minnesota pursuant to exclusive know-how, license, and
consulting agreements. Mayo clinicians with multiple specialties such as bariatric surgery, gastroenterology and laparoscopic surgery consult with our research and development team on an exclusive basis to advise us as we develop our devices for
vagal blocking therapy to treat obesity. Specifically, Mayo clinicians, along with other of our consultants, have offered their expertise to advise us with regard to our clinical trials and surgical techniques for our implantation
procedure and participate on our medical advisory board and therapeutic algorithm panel. The agreements with Mayo Clinic also include a similar collaboration for the development of products to address a wide variety of disorders susceptible to
treatment by electrically blocking neural impulses on the vagus nerve. We retain the exclusive rights to obesity-related device inventions developed through this collaboration. We have also licensed-in two obesity-related patent applications from
Mayo Clinic. These patent applications cover a number of medical device concepts for treating obesity, all of which are unrelated to our VBLOC technology. The five-year agreement entered into with the Mayo Clinic in 2005 was extended for two
additional years effective February 3, 2010.

Australian Institute of Weight Control (AIWC)

We have entered into a collaboration agreement with the AIWC, an Australian network of surgical clinics specializing in laparoscopic
weight loss surgery and clinical research for the morbidly obese. It consists of three partner clinics in Perth, Adelaide and Sydney, with expansion plans for two or more other centers in Australia. The AIWC is a group globally recognized in
bariatric procedures, including the Maestro System. The AIWC works with public and private organizations to develop treatment platforms for the seriously obese, striving for continual clinical improvement through leadership research and training
programs. The AIWC performed more than 1,250 bariatric procedures in 2009 and have a base of over 7,000 patients. The bariatric surgeons of the AIWC were among the first in the world to implant the Maestro System and have participated in all of our
clinical studies to date. The AIWC will be the first group of surgeons to implant the Maestro system if Australian regulatory approval is obtained. The AIWC will work with us to develop a surgical implantation training program, distribution and
research plans. The AIWC will support our efforts to gain TGA approval and regulatory approval in other territories and support our distributors efforts in gaining reimbursement for the private sector through the MSAC as it relates to the
Maestro System in Australia.

Medical Advisors

In addition to our collaboration with Mayo Clinic and AIWC, we also have medical advisors who provide strategic guidance to our
development programs, consult with us on clinical investigational plans and individual study protocols, and advise on clinical investigational site selection. Members of our medical advisory group also:



| |  |  | serve on our Data Safety Monitoring Board and Clinical Events Committee;
| | - |  | ------------------------------------------------------------------------



| |  |  | meet with governmental regulatory authorities;
| | - |  | ----------------------------------------------



| |  |  | provide consultation on professional meeting presentations and journal manuscript submissions; and
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | develop and participate in clinical site training programs, including study surgical technique training and study subject follow-up training.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------

Sales and Marketing

United States

We currently do not have a sales organization and
have no experience as a company in the marketing, sale or distribution of our proposed products. In the event that the Maestro System receives FDA approval, we expect to recruit and retain personnel responsible for commercial operations, sales and
marketing, customer service, reimbursement and technical service in order to support the commercial launch of our product.



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Finally, we expect that account management and patient registration processes used during
the clinical trial will be transitioned to commercial registration structure. Centers responsible for implanting our product will be expanded, and trained to perform the patient selection, implant and manage appropriate follow-up procedures.

Initially, we anticipate that our sales representatives will exclusively target selected bariatric surgery Centers of
Excellence and nationally recognized bariatric surgery centers. To be approved as a bariatric surgery Center of Excellence, a surgery center needs to perform a minimum of 125 bariatric surgical procedures per year. Currently there are over 400
bariatric surgery Centers of Excellence approved by the Surgical Review Corporation. In addition we expect to market our products to a small number of nationally-recognized hospitals that do not intend to pursue the Center of Excellence
certification.

We plan to support our sales representatives with field clinical experts who will be responsible for training
and support at various implant centers. We also expect that our sales representatives will spend time implementing joint consumer marketing programs with surgical centers and implanting surgeons. We also intend to market to potential referral source
clinicians such as general practitioners, internists, endocrinologists and nurses.

To achieve commercial success for any
product that receives regulatory approval, we must either develop a sales organization or enter into arrangements with others to sell our products. Developing a direct sales force can be expensive and time consuming and can delay the success of any
product launch. Any sales force we develop will likely be competing against the experienced and well-funded sales and marketing operations of our competitors.

Outside of the United States

Outside of the United States, we may
sell and support our products either through direct sales or medical device distributors. We plan to target countries with reasonable regulatory and reimbursement barriers and a population interested in managing their obesity. Each country we target
will require specific regulatory approval from the local government or agency. In some situations, we may be able to rely on FDA approval, European CE Mark or ISO quality certificates to satisfy local regulatory requirements.

We have begun to take the initial steps necessary to commercialize the Maestro RC System in Australia. We have also entered into a
cooperation agreement with the AIWC by which the AIWC has agreed to work with us toward regulatory approval in Australia and to collaborate on subsequent marketing and distribution efforts in Australia. We are also exploring commercialization
opportunities in other markets outside of the United States and Australia.

Competition

We compete primarily in the market for obesity treatment with surgical obesity procedures and various devices used to implement
neurostimulation and gastric stimulation systems. We also compete with pharmaceutical therapies. The market for obesity treatments is intensely competitive, subject to rapid technological change and significantly affected by new product development.
Although we expect to compete in the market for gastric stimulation systems and other neurotechnology devices that treat obesity, there are currently no FDA-approved neuromodulation or neuroblocking therapies for the treatment of obesity. We believe
we are the first and only company currently pursuing neuroblocking therapy for the treatment of obesity.

We also compete
against the manufacturers of pharmaceuticals that are directed at treating obesity. We are aware of two drugs that are approved for long-term treatment of obesity in the United States: Sibutramine, marketed by Abbott Labs as Meridia which has
recently been withdrawn from the market worldwide by the manufacturer based on safety concerns, and Orlistat, marketed by Roche as Xenical and GlaxoSmithKline as Alli. In addition, numerous pharmaceutical companies are working on additional drug
therapies that may prove effective in addressing obesity.



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We compete with several private early-stage companies developing neurostimulation devices
for application to the gastric region and related nerves for the treatment of obesity. These companies may prove to be significant competitors, particularly through collaborative arrangements with large and established companies. They also compete
with us in recruiting and retaining qualified scientific and management personnel, establishing clinical trial sites and subject registration for clinical trials, as well as in acquiring technologies and technology licenses complementary to our
programs or advantageous to our business.

In addition, there are many larger potential competitors experimenting in the field
of neurostimulation to treat various diseases and disorders. For example, Medtronic, which develops deep brain stimulators and spinal cord stimulators, acquired TransNeuronix, which sought to treat obesity by stimulating the smooth muscle of the
stomach wall and nearby tissue. St. Jude Medical, through its acquisition of Advanced Neuromodulation Systems, is developing spinal cord stimulators. Cyberonics is developing vagus nerve stimulators to modulate epileptic seizures and other
neurological disorders. Boston Scientific, through its Advanced Bionics division, is developing neurostimulation devices such as spinal cord stimulators and cochlear implants. Ethicon-Endo Surgery acquired Cyberonics patents and patent
applications pertaining to vagus nerve stimulation for the treatment of obesity and two related co-morbidities, diabetes and hypertension, in overweight patients.

In addition to competition from developers of neurostimulation and gastric modulation systems, we expect our Maestro System will also compete with surgical obesity procedures, including gastric bypass,
gastric banding, vertical-banded gastroplasty and biliopancreatic diversion. The leader in the field of gastric banding is Allergan, whose Lap-Band received FDA approval for marketing in 2001. Allergan also recently acquired EndoArt, a European band
company that has developed the EasyBand, which uses RF telemetry to adjust the gastric band. Additionally, we are aware that Johnson & Johnson received approval on September 28, 2007 of their gastric band product known as the Realize
Adjustable Gastric Band.

We believe that the principal competitive factors in our market include:



| |  |  | acceptance by healthcare professionals, patients and payors;
| | - |  | ------------------------------------------------------------



| |  |  | published rates of safety and efficacy;
| | - |  | ---------------------------------------



| |  |  | reliability and high quality performance;
| | - |  | -----------------------------------------



| |  |  | effectiveness at controlling co-morbidities such as diabetes and hypertension;
| | - |  | ------------------------------------------------------------------------------



| |  |  | invasiveness and the inherent reversibility of the procedure or device;
| | - |  | -----------------------------------------------------------------------



| |  |  | cost and average selling price of products and relative rates of reimbursement;
| | - |  | -------------------------------------------------------------------------------



| |  |  | effective marketing, education, sales and distribution;
| | - |  | -------------------------------------------------------



| |  |  | regulatory and reimbursement expertise;
| | - |  | ---------------------------------------



| |  |  | technological leadership and superiority; and
| | - |  | ---------------------------------------------



| |  |  | speed of product innovation and time to market.
| | - |  | -----------------------------------------------

Many of our competitors are either publicly-traded or are divisions of publicly-traded companies, and they enjoy several competitive advantages over us, including:



| |  |  | significantly greater name recognition;
| | - |  | ---------------------------------------



| |  |  | established relations with healthcare professionals, customers and third-party payors;
| | - |  | --------------------------------------------------------------------------------------



| |  |  | established distribution networks;
| | - |  | ----------------------------------



| |  |  | greater experience in research and development, manufacturing, preclinical testing, clinical trials, obtaining regulatory approvals, obtaining
reimbursement and marketing approved products; and
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | greater financial and human resources.
| | - |  | --------------------------------------



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As a result, we cannot assure you that we will be able to compete effectively against these
companies or their products.

Third-party Coverage and Reimbursement

We plan to set a market price for the Maestro System in the United States that is comparable to other high-end, active implantable devices
such as implantable cardioverter defibrillators (ICDs), neurostimulation devices for chronic pain, and cochlear implant systems. We expect that the procedure will be performed in the outpatient setting.

We believe that establishing appropriate third-party coverage for the therapy should be achievable as important structural elements are
already in place. Physician claims for payment use Current Procedural Terminology, Fourth Edition (CPT) billing codes to describe procedures and services performed. Currently, there are established CPT codes for the implantation of cranial nerve
pulse generators and related leads, and we expect providers may seek payment for our therapy based on these codes. With respect to possible usage of our product in the hospital inpatient setting, hospital inpatient billing is referenced by
International Classifications of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) procedure codes. There is an existing ICD-9-CM diagnosis code for morbid obesity and our studies are intended to provide the necessary outcomes data to link
appropriate billing codes with the ICD-9 diagnosis code for morbid obesity. By October 2013, health plans and providers must replace the ICD-9-CM system and begin using the newer ICD-10-CM system for billing hospital inpatient procedures. The
ICD-10-CM system should not impact coverage decisions, but could impact reimbursement for various procedures. Our clinical trial data substantiating VBLOC therapy will also be used to seek coverage of VBLOC therapy for patients with morbid obesity
and appropriate reimbursement for surgeons and hospitals under the codes already in place.

CMS, the federal agency that
administers the Medicare program, has issued a national coverage determination for several specific types of bariatric surgery, which we view as positive, potential precedent and guidance to factors that CMS might use in deciding to cover our
therapy. The policy indicates that Medicare will cover these bariatric surgical procedures when they are performed in an approved Bariatric Center of Excellence by a bariatric surgeon who also meets established requirements. Subjects with a BMI
greater than or equal to 35, at least one obesity-related disease or disorder and who were previously unsuccessful with medical treatment for obesity are considered eligible. However, the policy reiterates that treatments for obesity alone are not
covered, because such treatments are not considered reasonable and necessary. Although Medicare policies are often emulated or adopted by other third-party payors, other governmental and private insurance coverage currently varies by carrier and
geographic location. We intend to actively work with major insurance carriers as well as CMS to obtain coverage for procedures using our product.

Other manufacturers of neurostimulator devices for a variety of indications have been successful in securing third-party coverage and reimbursement for use of their devices after early commercialization.
We will actively pursue all similar opportunities to secure appropriate payment for our device.

Intellectual Property

Our success will depend in part on our ability to obtain and defend patent protection for our products and processes, to preserve our
trade secrets and to operate without infringing or violating the proprietary rights of third parties. To date, we have 15 issued U.S. patents, 13 of which pertain to treating gastrointestinal disorders and we believe provide us with broad
intellectual property protection covering electrically-induced vagal blocking and methods for treating obesity. Assuming timely payment of maintenance fees as they become due, these patents will begin to expire starting in 2022. We have two granted
European patents and one granted Australian patent. We also have 20 U.S. patent applications and 29 national stage patent applications, including applications in Australia, China, India, Europe and Japan. These applications primarily pertain to our
vagal blocking technology and its application to obesity as well as other gastrointestinal disorders. In addition to our



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patents and applications, we have a license agreement with Mayo Foundation for Medical Education and Research for one issued U.S. patent and one pending U.S. patent application on medical device
obesity treatments, which are unrelated to our VBLOC therapy.

We also register the trademarks and trade
names through which we conduct our business. To date, in the United States we have registered trademarks for
VBLOC® and ENTEROMEDICS® each registered with the United States Patent and Trademark Office, an approved Statement of Use for MAESTRO® and have received a Notice of Allowance and fifth extension of time to file a Statement of Use on our application to register the mark EMPOWER. In
addition, the marks VBLOC, MAESTRO and ENTEROMEDICS are the subject of either a trademark registration or application for registration in Australia, Brazil, China, the European Community, Saudi Arabia and VBLOC is registered in
Switzerland. The trademarks VBLOC, ENTEROMEDICS and MAESTRO SYSTEM ORCHESTRATING OBESITY SOLUTIONS are registered in Mexico. The trademarks VBLOC, ENTEROMEDICS and MAESTRO SYSTEM are the subject of pending trademark applications in the
United Arab Emirates.

In addition to our patents, we rely on confidentiality and proprietary information agreements to
protect our trade secrets and proprietary knowledge. These confidentiality and proprietary information agreements generally provide that all confidential information developed or made known to individuals by us during the course of their
relationship with us is to be kept confidential and not disclosed to third parties, except in specific circumstances. The agreements also provide for ownership of inventions conceived during the course of such agreements. If our proprietary
information is shared or our confidentiality agreements are breached, we may not have adequate remedies, or our trade secrets may otherwise become known to or independently developed by competitors.

Manufacturers and Suppliers

We have designed and developed all of the elements of our Maestro System, except for the clinician programmer hardware, which uses a commercially available laptop computer. To date, all of the materials
and components of the system used in our clinical trials are procured from qualified suppliers and contract manufacturers in accordance with our proprietary specifications. We use third parties to manufacture our Maestro System to minimize our
capital investment, help control costs and take advantage of the expertise these third parties have in the large-scale production of medical devices. We do not currently plan to manufacture our Maestro System ourselves. All of our key manufacturers
and suppliers have experience working with commercial implantable device systems, are ISO certified and are regularly audited by us. Our key manufacturers and suppliers have a demonstrated record of compliance with international regulatory
requirements.

In the event that the Maestro System receives FDA or TGA approval, we expect to increase our production volume
by a significant amount. Given that we rely primarily on third-party manufacturers and suppliers for the production of our products, our ability to increase production will depend upon the experience, certification levels and large scale production
capabilities of our suppliers and manufacturers. Qualified suppliers and contract manufacturers have been and will continue to be selected to supply products on a commercial scale according to our proprietary specifications. We also intend to
increase our inventory levels to support commercial forecasts as we expand our implanting centers. Our FDA approval process requires us to name and obtain approval for the suppliers of key components of our Maestro System.

Many of our parts are custom designed and in certain instances, are obtained through long-term supply arrangements that are exclusive.
Due to these factors, we may not be able to quickly qualify and establish additional or replacement suppliers for the components of our Maestro System. A delay in the approval process with the FDA for our Maestro System as a result of the need to
qualify or obtain alternate vendors for any of our components would delay our ability to sell and market the Maestro System and could have a material adverse effect on our business.

We believe that our current manufacturing and supply arrangements will be adequate to continue our ongoing and planned clinical trials.
In order to produce the Maestro System in the quantities we anticipate to



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meet future market demand, we will need our manufacturers and suppliers to increase, or scale up, manufacturing production and supply arrangements by a significant factor over the current level
of production. There are technical challenges to scaling up manufacturing capacity and developing commercial-scale manufacturing facilities that may require the investment of substantial additional funds by our manufacturers and suppliers and hiring
and retaining additional management and technical personnel who have the necessary experience. If our manufacturers or suppliers are unable to do so, we may not be able to meet the requirements for the launch of the product or to meet future demand,
if at all. We may also represent only a small portion of our suppliers or manufacturers business and if they become capacity constrained they may choose to allocate their available resources to other customers that represent a larger
portion of their business. We currently anticipate that we will continue to rely on third-party manufacturers and suppliers for the production of the Maestro System following commercialization. If we develop and obtain regulatory approval for our
product and are unable to obtain a sufficient supply of our product, our revenue, business and financial prospects would be adversely affected.

Government Regulations

United States

Our Maestro System is regulated by the FDA as a medical device under the Federal Food, Drug, and Cosmetic Act (FFDCA) and the regulations promulgated under the FFDCA. Pursuant to the FFDCA, the FDA
regulates the research, design, testing, manufacture, safety, labeling, storage, record keeping, advertising, sales and distribution, post-market adverse event reporting, production and advertising and promotion of medical devices in the United
States. Noncompliance with applicable requirements can result in warning letters, fines, injunctions, civil penalties, recall or seizure of products, total or partial suspension of production, failure of the government to grant premarket approval
for devices and criminal prosecution.

Medical devices are classified into one of three classes, Class I, II or III, on the
basis of the amount of risk and the controls deemed by the FDA to be necessary to reasonably ensure their safety and effectiveness. Class I, low risk, devices are subject to general controls (e.g., labeling and adherence to good manufacturing
practices (GMPs)). Class II, intermediate risk, devices are subject to general controls and to special controls (e.g., performance standards, and premarket notification). Generally, Class III devices are those which must receive premarket approval
by the FDA to ensure their safety and effectiveness (e.g., life-sustaining, life-supporting and implantable devices, or new devices which have not been found substantially equivalent to legally marketed devices), and require clinical testing to
ensure safety and effectiveness and FDA approval prior to marketing and distribution. The FDA also has the authority to require clinical testing of Class II devices. In both the United States and certain international markets, there have been a
number of legislative and regulatory initiatives and changes, such as the Modernization Act, which could and have altered the healthcare system in ways that could impact our ability to sell our medical devices profitably. Recent, widely-publicized
events concerning the safety of certain drug, food and medical device products have raised concerns among members of Congress, medical professionals, and the public regarding the FDAs handling of these events and its perceived lack of
oversight over regulated products. The increased attention to safety and oversight issues could result in a more cautious approach by the FDA to device clearances and approvals, as well as post-market compliance, which could prevent, delay clearance
or approval of our new products or product modifications, or require us to expend additional resources on post-market studies and controls.

The FFCDA provides two basic review procedures for medical devices. Certain products may qualify for a submission authorized by Section 510(k) of the FFCDA, where the manufacturer submits to the FDA
a premarket notification of the manufacturers intention to commence marketing the product. The manufacturer must, among other things, establish that the product to be marketed is substantially equivalent to another legally marketed product.
Marketing may commence when the FDA issues a letter finding substantial equivalence. If a medical device does not qualify for the 510(k) procedure, the manufacturer must file a premarket approval (PMA) application with the FDA. This procedure
requires more extensive pre-filing clinical and preclinical testing than the 510(k) procedure and involves a significantly longer FDA review process.



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Premarket Approval

Our product will require prior premarket approval from the FDA. Because our Maestro System is an implanted device, it is deemed to pose a
significant risk. To market the Maestro System in the United States, the FDA must approve the device after submission of a PMA. The FDA can also impose restrictions on the sale, distribution or use of devices at the time of their clearance or
approval, or subsequent to marketing. The process of obtaining premarket approval is costly, lengthy and uncertain. A PMA must be supported by extensive data including, but not limited to, technical, pre-clinical and clinical trials to demonstrate
to the FDAs satisfaction the safety and effectiveness of the device. Among other information, the PMA must also contain a full description of the device and its components, a full description of the methods, facilities and controls used for
manufacturing, and proposed device labeling.

If the FDA determines that a PMA is complete, the FDA accepts the application
and begins an in-depth review of the submitted information. The FDA, by statute and regulation, has 180 days to review an accepted PMA application, although the review and response activities generally occur over a significantly longer period of
time, typically one year, and can take up to several years. During this review period, the FDA may request additional information or clarification of information already provided. Also during the review period, an advisory panel of experts from
outside the FDA may be convened to review and evaluate the application and provide recommendations to the FDA as to the approvability of the device. In addition, the FDA will conduct a pre-approval inspection of our, and our manufacturers,
facilities to evaluate compliance with the quality system regulation. Under the Medical Device User Fee and Modernization Act of 2002, the fee to submit a PMA can be up to $259,600 per PMA, however, we have qualified for a small business exemption.
If the FDAs evaluation of the PMA is favorable, the PMA is approved, and the device may be marketed in the United States. The FDA may approve the PMA with post-approval conditions intended to ensure the safety and effectiveness of the device.
Failure to comply with the conditions of approval can result in material adverse enforcement action, including the loss or withdrawal of the approval. Even after approval of a PMA, new PMAs or supplemental PMAs are required for significant
modifications to the manufacturing process, labeling, use and design of a device that is approved through the premarket approval process. Premarket approval supplements often require submission of the same type of information as a PMA except that
the supplement is limited to information needed to support any changes from the device covered by the original PMA.

Clinical Trials

A clinical trial is almost always required to support a PMA. Clinical trials for a significant risk device such as ours require submission of an application for an IDE, to the FDA. The IDE
application must be supported by appropriate data, such as animal and laboratory testing results, showing that it is safe to test the device in humans and that the testing protocol is scientifically sound. Clinical trials for a significant risk
device may begin once the IDE application is allowed to proceed by the FDA and the institutional review boards overseeing the clinical trial at the various investigational sites.

Clinical trials require extensive recordkeeping and detailed reporting requirements. Our clinical trials must be conducted under the
oversight of an institutional review board at the relevant clinical trial site and in accordance with applicable regulations and policies including, but not limited to, the FDAs good clinical practice (GCP) requirements. We, the trial data
safety monitoring board, the FDA or the institutional review board at each site at which a clinical trial is being performed may suspend a clinical trial at any time for various reasons, including a belief that the risks to study subjects outweigh
the anticipated benefits.

Pervasive and Continuing FDA Regulation

Both before and after FDA approval, numerous regulatory requirements apply. These include:



| |  |  | quality system regulation, which requires manufacturers to follow design, testing, control, documentation, complaint handling and other quality
assurance procedures during the design and manufacturing processes;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | regulations which govern product labels and labeling, prohibit the promotion of products for unapproved or off-label uses and impose other
restrictions on labeling and promotional activities;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | medical device reporting regulations, which require that manufacturers report to the FDA if their device may have caused or contributed to a death or
serious injury or malfunctioned in a way that would likely cause or contribute to a death or serious injury if it were to recur; and
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | notices of correction or removal and recall regulations.
| | - |  | --------------------------------------------------------

Advertising and promotion of medical devices are also regulated by the Federal Trade Commission and by state regulatory and enforcement authorities. Recently, some promotional activities for FDA-regulated
products have resulted in enforcement actions brought under healthcare reimbursement laws and consumer protection statutes. In addition, under the federal Lanham Act, competitors and others can initiate litigation relating to advertising claims.

Compliance with regulatory requirements is enforced through periodic, unannounced facility inspections by the FDA. Failure to
comply with applicable regulatory requirements can result in enforcement action by the FDA, which may include any of the following sanctions:



| |  |  | warning letters or untitled letters;
| | - |  | ------------------------------------



| |  |  | fines, injunction and civil penalties;
| | - |  | --------------------------------------



| |  |  | recall or seizure of our products;
| | - |  | ----------------------------------



| |  |  | customer notification, or orders for repair, replacement or refund;
| | - |  | -------------------------------------------------------------------



| |  |  | operating restrictions, partial suspension or total shutdown of production or clinical trials;
| | - |  | ----------------------------------------------------------------------------------------------



| |  |  | refusing our request for premarket approval of new products;
| | - |  | ------------------------------------------------------------



| |  |  | withdrawing premarket approvals that are already granted; and
| | - |  | -------------------------------------------------------------



| |  |  | criminal prosecution.
| | - |  | ---------------------

International

Australia

The Companys Maestro System is regulated as a medical device under the Therapeutic Goods Act (TG Act), which regulates the
research, design, testing, manufacture, safety, labeling, storage, record keeping, advertising, sales and distribution, post-market adverse event reporting, production and advertising and promotion of medical devices in Australia. The TG Act
requires medical devices to be included on the Australian Register of Therapeutic Goods (ARTG) before they can be supplied in Australia. The TGAs requirements in relation to the inclusion process depend on the classification of devices based
on risk level and other factors. In this case, the device will require a full conformity assessment prior to inclusion on the ARTG to satisfy the TGA that the device and its manufacturer comply with the Essential Principles under the TG
Act relating to the safety and performance characteristics of medical devices. Accordingly, among other things, the TGA will need to review data demonstrating the safety and efficacy of the device including data obtained through clinical trials. TGA
regulations continue to apply to a device after inclusion on the ARTG. For example the sponsor will be required to report certain adverse events to the TGA, and if a recall is required, it will need to comply with TGA requirements. Even after the
device is included, the TGA will conduct audits from time to time in relation to the product to ensure ongoing compliance. In addition, advertising material to consumers relating to the device is regulated by the TG Act. Advertising material in
general is also subject to trade practices legislation, the regulatory agency for which is the Australian Competition and Consumer Commission.

Other Countries

International sales of medical devices are subject
to foreign government regulations, which vary substantially from country to country. The time required to obtain approval by a foreign country may be longer



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or shorter than that required for FDA approval, and the requirements may differ. The primary regulatory environment in Europe is that of the European Economic Community (EEC), which consists of
27 countries encompassing nearly all the major countries in Europe. Other countries that are not part of the EEC, such as Switzerland, have voluntarily adopted laws and regulations that mirror those of the EEC with respect to medical devices. The
EEC has adopted Directive 90/385/EEC for active implantable medical devices and numerous standards that govern and harmonize the national laws and standards regulating the design, manufacture, clinical trials, labeling and adverse event reporting
for medical devices that are marketed in member states. Medical devices that comply with the requirements of the national law of the member state in which they are first marketed will be entitled to bear CE marking, indicating that the device
conforms to applicable regulatory requirements, and, accordingly, can be commercially marketed within EEC states and other countries that recognize this mark for regulatory purposes.

We obtained European CE Mark approval for our Maestro RF System on March 4, 2009 and are currently pursuing CE Mark certification
for our Maestro RC System. The method of assessing conformity with applicable regulatory requirements varies depending on the class of the device, but for our Maestro System (which falls into Class III), the method involved a combination of
self-assessment by the manufacturer of the safety and performance of the device, and a third-party assessment by a Notified Body, usually of the design of the device and of the manufacturers quality system. A Notified Body is a private
commercial entity that is designated by the national government of a member state as being competent to make independent judgments about whether a product complies with applicable regulatory requirements. The manufacturers assessment included
a clinical evaluation of the conformity of the device with applicable regulatory requirements. We use DEKRA Certification Inc. (formerly known as KEMA Quality) in the Netherlands as the Notified Body for our CE marking approval process.

Employees

As of
December 31, 2010, we had a total of 29 employees. All of these employees are located in the United States.

From time to
time we also employ independent contractors, consultants and temporary employees to support our operations. None of our employees are subject to collective bargaining agreements. We have never experienced a work stoppage and believe that our
relations with our employees are good.

Executive Officers

The following table sets forth information regarding our executive officers, including their ages, as of March 7, 2011:



|                       |  |     |    |  |          |                                                          
|---------------------- |  | --- | -- |  | -------- | ---------------------------------------------------------
|Name                   |  | Age |    |  | Position
|Mark B. Knudson, Ph.D. |  |     | 62 |  |          | President, Chief Executive Officer, Chairman and Director
|Greg S. Lea            |  |     | 58 |  |          | Senior Vice President and Chief Financial Officer        
|Adrianus (Jos) Donders |  |     | 57 |  |          | Senior Vice President of Operations                      
|Katherine S. Tweden    |  |     | 50 |  |          | Vice President of Research and Clinical                  

Mark B. Knudson, Ph.D. has served as our President, Chief Executive Officer and Chairman of the board since December 2002.
Dr. Knudson also served as President and Chief Executive Officer of Venturi Group, LLC and Venturi Development, Inc., positions he held from 1999 and 2001 until their dissolutions in 2008 and 2009, respectively. Dr. Knudson served as
Chairman of the board of Restore Medical, Inc., a publicly-held medical device company focused on the treatment of sleep disordered breathing, from 1999 through July 2008 when it was acquired by Medtronic, Inc. Dr. Knudson was also a member of
the audit committee of Restore Medical. Dr. Knudson received a Bachelor of Science in biology from Pacific Lutheran University and a Ph.D. in physiology from Washington State University.



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Greg S. Lea has served as our Senior Vice President and Chief Financial Officer since
May 21, 2007. Prior to joining us, Mr. Lea served as Chief Financial Officer of Pemstar Inc. from July 2002 through January 2007 when it was acquired by Benchmark Electronics, Inc. Mr. Lea also served as a director of Pemstar from
April 2001 through January 2007 and held the position of Corporate Controller from April 2002 through July 2002. From 1993 to April 2002, Mr. Lea served as a corporate Vice President for Jostens Corporation, a commemorative and affiliation
products manufacturer, serving most recently as corporate Vice President-Business Ventures. Prior to that, Mr. Lea held several financial management and administrative positions at IBM Corporation from 1974 to 1993 and was President and a
director of the Ability Building Center, Inc. from 1981 to 1993. Mr. Lea holds a B.S. in Accounting/Business Management from Minnesota State University, Mankato.

Adrianus (Jos) Donders has served as our Senior Vice President of Operations since April 2005. From September 2003 to April 2005, Mr. Donders was Director Communication Systems Engineering for
Medtronic USA. From June 2000 to August 2003, Mr. Donders served as Director Clinical Study Management and Research and Development Europe for Medtronic Europe. Mr. Donders received a degree equivalent to a Masters of Electrical
Engineering from the Institute of Technology Eindhoven Netherlands.

Katherine S. Tweden, Ph.D. has served as our Vice
President of Research since January 2003 and Vice President of Clinical since September 2008. From November 2002 to January 2003, Dr. Tweden was a consultant to Venturi Group, a medical device incubator company. From January 2003 through August
2004, Dr. Tweden worked for Venturi Development Inc. as a consultant to us. From July 1997 to October 2002, Dr. Tweden held positions including Director of Research and Vice President of Research for HeartStent Corporation. From September
1990 to June 1997, Dr. Tweden held the positions of Senior Research Scientist and Principal Research Scientist at St Jude Medical, Inc. Dr. Tweden received a Bachelor of Arts in chemistry from Gustavus Adolphus College and a Masters degree
and Ph.D. in biomedical engineering from Iowa State University.

Our Corporate Information

We were incorporated in Minnesota in December 2002 under the name Beta Medical, Inc. In 2003, we changed our name to EnteroMedics Inc. and
in 2004 we reincorporated in Delaware. We file reports and other information with the Securities and Exchange Commission (SEC) including annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and
proxy or information statements. Those reports and statements as well as all amendments to those documents filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (1) are available at the
SECs Public Reference Room at 100 F Street, N.E., Washington, DC 20549, (2) may be obtained by sending an electronic message to the SEC at publicinfo@sec.govor by sending a fax to the SEC at 1-202-777-1027, (3) are available
at the SECs internet site (http://www.sec.gov), which contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC and (4) are available free of charge through our
website as soon as reasonably practicable after electronic filing with, or furnishing to, the SEC. You may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330.

Our principal executive offices are located at 2800 Patton Road, St. Paul, Minnesota 55113, and our telephone number is
(651) 634-3003. Our website address is www.enteromedics.com. The information on, or that may be accessed through, our website is not incorporated by reference into this Annual Report on Form 10-K and should not be considered a part of
this Annual Report on Form 10-K.



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|ITEM 1A. | RISK FACTORS
|-------- | ------------

Risks Related to Our Financial Condition and Capital Requirements

We are a clinical development stage company with a limited history of operations and no approved products, and we cannot assure you that we will ever have a commercialized product.

We are a clinical development stage company with a limited operating history upon which you can evaluate our business.
We currently do not have any products cleared in the United States or approved for commercialization or any other source of revenue, and we do not expect to have a commercialized product earlier than the second half of 2011 outside the United States
and not until late 2013 within the United States, if at all. We have been engaged in research and development and clinical trials since our inception in 2002 and have invested substantially all of our time and resources in developing our VBLOC
therapy, which we intend to commercialize initially in the form of our Maestro System. The success of our business will depend on our ability to obtain regulatory approval to market our Maestro System and any products we may develop in the future
and our ability to create product sales, successfully introduce new products, establish our sales force and control costs, all of which we may be unable to do. If we are unable to successfully develop, receive regulatory approval for and
commercialize our Maestro System for its indicated use, we may never generate revenue or be profitable and we may have to cease operations. Our lack of a significant operating history also limits your ability to make a comparative evaluation of us,
our products and our prospects.

We have incurred losses since inception and we anticipate that we will continue to incur increasing
losses for the foreseeable future.

We have incurred losses in each year since our formation in 2002. As of
December 31, 2010, we had experienced net losses during the development stage of $150.6 million. Our net loss applicable to common stockholders for the fiscal years ended December 31, 2010, 2009 and 2008 was $17.3 million, $31.9 million
and $37.9 million, respectively. We have funded our operations to date principally from the sale of our securities and through the issuance of indebtedness. Development of a new medical device, including conducting clinical trials and seeking
regulatory approvals, is a long, expensive and uncertain process. If our Maestro System is approved for marketing by the U.S. Food and Drug Administration (FDA), Australian Therapeutic Goods Administration (TGA) or regulatory authority of another
country we expect to incur significant sales and marketing expenses prior to recording sufficient revenue to offset these expenses. We expect our general and administrative expenses to increase as we continue to add the infrastructure necessary to
support operating as a public company and develop our intellectual property portfolio. For these reasons, we expect to continue to incur significant and increasing operating losses for the next several years. These losses, among other things, have
had and will continue to have an adverse effect on our stockholders equity and working capital. Because of the numerous risks and uncertainties associated with developing new medical devices, we are unable to predict the extent of any future
losses or when we will become profitable, if ever.

We will need substantial additional funding and may be unable to raise capital when
needed, which would force us to delay, reduce or eliminate our product development programs or liquidate some or all of our assets.

Our operations have consumed substantial amounts of cash since inception. We expect to continue to spend substantial amounts on research and development, including conducting current and future clinical
trials for our Maestro System, and initiating the commercialization of our product. Cash used in operations was $13.7 million, $24.7 million and $33.7 million for the fiscal years ended December 31, 2010, 2009 and 2008, respectively. We expect
that our cash used in operations will continue to be significant in the upcoming years, and we will eventually need to raise additional capital to continue our research and development programs, commercialize our Maestro System, if approved by the
TGA or FDA, and fund our ongoing operations.

Our future funding requirements will depend on many factors, including:



| |  |  | the scope, rate of progress, results and cost of our clinical trials and other research and development activities;
| | - |  | -------------------------------------------------------------------------------------------------------------------



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| |  |  | the cost and timing of regulatory approvals;
| | - |  | --------------------------------------------



| |  |  | the cost and timing of establishing sales, marketing and distribution capabilities;
| | - |  | -----------------------------------------------------------------------------------



| |  |  | the cost of establishing clinical and commercial supplies of our Maestro System and any products that we may develop;
| | - |  | ---------------------------------------------------------------------------------------------------------------------



| |  |  | the rate of market acceptance of our Maestro System and VBLOC therapy and any other product candidates;
| | - |  | -------------------------------------------------------------------------------------------------------



| |  |  | the cost of filing and prosecuting patent applications and defending and enforcing our patent and other intellectual property rights;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the cost of defending, in litigation or otherwise, any claims that we infringe third-party patent or other intellectual property rights;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the effect of competing products and market developments;
| | - |  | ---------------------------------------------------------



| |  |  | the cost of explanting clinical devices;
| | - |  | ----------------------------------------



| |  |  | the terms and timing of any collaborative, licensing or other arrangements that we may establish;
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | any revenue generated by sales of our Maestro System or our future products; and
| | - |  | --------------------------------------------------------------------------------



| |  |  | the extent to which we invest in products and technologies, although we currently have no commitments or agreements relating to these types of
transactions.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------

Until the time, if ever, when we can generate a sufficient amount of product revenue, we
expect to finance our future cash needs through public or private equity offerings, debt financings or corporate collaboration, licensing arrangements and grants, as well as through interest income earned on cash balances.

Additional capital may not be available on terms favorable to us, or at all. If we raise additional funds by issuing equity securities,
our stockholders may experience dilution. Debt financing, if available, may involve restrictive covenants or additional security interests in our assets. Any additional debt or equity financing that we complete may contain terms that are not
favorable to us or our stockholders. Issuing public equity or debt securities may also be more costly or time-consuming for us because the aggregate market value of our common stock held by non-affiliates (public float) is less than $75.0 million
(calculated in accordance with the U.S. Securities and Exchange Commission (SEC) rules and regulations), which limits the size of offerings we may make using a Form S-3 registration statement to 1/3 of our public float for any twelve month
period. If we raise additional funds through collaboration and licensing arrangements with third parties, it may be necessary to relinquish some rights to our technologies or products, or grant licenses on terms that are not favorable to us. If we
are unable to raise adequate funds, we may have to delay, reduce the scope of, or eliminate some or all of, our development programs or liquidate some or all of our assets.

We incur significant costs as a result of operating as a public company, and our management is required to devote substantial time to new compliance initiatives.

As a public company, we incur significant legal, accounting and other expenses. In addition, the Sarbanes-Oxley Act of 2002, as well as
rules subsequently implemented by the SEC and NASDAQ have imposed various requirements on public companies, including establishment and maintenance of effective disclosure and financial controls and changes in corporate governance practices. Our
management and other personnel devote a substantial amount of time to these compliance initiatives. Moreover, these rules and regulations result in increased legal and financial compliance costs and will make some activities more time-consuming and
costly.

The Sarbanes-Oxley Act of 2002 requires, among other things, that we maintain effective internal controls for
financial reporting and disclosure. In particular, we are required to perform system and process evaluation and testing of our internal controls over financial reporting to allow management to report on the effectiveness of



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our internal controls over financial reporting, as required by Section 404 of the Sarbanes-Oxley Act. Our testing may reveal deficiencies in our internal controls over financial reporting
that are deemed to be material weaknesses. We have incurred and continue to expect to incur significant expense and devote substantial management effort toward ensuring compliance with Section 404. Moreover, if we do not comply with the
requirements of Section 404, or if we identify deficiencies in our internal controls that are deemed to be material weaknesses, the market price of our stock could decline and we could be subject to sanctions or investigations by NASDAQ, the
SEC or other regulatory authorities, which would entail expenditure of additional financial and management resources.

Risks Associated
with Development and Commercialization of Our Maestro System

We have not received, and may never receive, approval from the FDA or
the regulatory body in any other country to market our Maestro RC System for the treatment of obesity.

We do not have
the necessary regulatory approvals to market our Maestro System in the United States or in any foreign market other than the European Community for which we received CE Mark approval for our Maestro RF System on March 4, 2009. We plan initially
to launch our product, if approved, in countries outside the United States. We are hoping to receive CE Mark approval on our second generation Maestro RC System in first quarter 2011 and immediately thereafter use that approval to seek approval from
the TGA to market the system in Australia by the second half of 2011.

In order to market our Maestro System outside of the
United States, we will need to establish and comply with the numerous and varying regulatory requirements of other countries regarding safety and efficacy. Approval procedures vary among countries and can involve additional product testing and
additional administrative review periods. The time required to obtain approval in other countries may differ from that required to obtain FDA approval. The regulatory approval process in other countries may also include all of the risks detailed
below regarding FDA approval in the United States. Regulatory approval in one country does not ensure regulatory approval in another, but a failure or delay in obtaining regulatory approval in one country may negatively impact the regulatory process
in others. While we have received the European CE Mark for our Maestro RF System, we cannot assure you when, or if, we will be able to commence sales in the European Economic Area or obtain approval to market our Maestro System in other countries
outside the United States.

We cannot market our product in the United States unless it has been approved by the FDA. The FDA
approval process involves, among other things, successfully completing clinical trials and obtaining a premarket approval (PMA). The PMA process requires us to prove the safety and efficacy of our Maestro System to the FDAs satisfaction. This
process can be expensive and uncertain, requires detailed and comprehensive scientific and human clinical data, generally takes one to three years after a PMA application is filed, and notwithstanding the effort and expense incurred, may never
result in the FDA granting a PMA. Because VBLOC therapy represents a novel way to effect weight loss in the treatment of obesity, and because there is a large population of obese patients who might be eligible for treatment, it is possible that the
FDA and other regulatory bodies will review an application for approval of our Maestro System with greater scrutiny, which could cause that process to be lengthier and more involved than that for products without such characteristics. The FDA can
delay, limit or deny approval of a PMA application for many reasons, including:



| |  |  | our inability to demonstrate safety or effectiveness to the FDAs satisfaction;
| | - |  | -------------------------------------------------------------------------------



| |  |  | the data from our preclinical studies and clinical trials may be insufficient to support approval;
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | the facilities of our third-party manufacturers or suppliers may not meet applicable requirements;
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | our compliance with preclinical, clinical or other regulations;
| | - |  | ---------------------------------------------------------------



| |  |  | our inability to demonstrate through our ongoing clinical trials that the Maestro System causes EWL greater than the control therapy;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our inability to meet the FDAs statistical requirements or changes in statistical tests or significance levels the FDA requires for approval of a
medical device, including ours; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | changes in the FDA approval policies, expectations with regard to the type or amount of scientific data required or adoption of new regulations may
require additional data or additional clinical studies.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In addition, recent, widely-publicized events
concerning the safety of certain drug, food and medical device products have raised concerns among members of Congress, medical professionals, and the public regarding the FDAs handling of these events and its perceived lack of oversight over
regulated products. The increased attention to safety and oversight issues could result in a more cautious approach by the FDA to clearances and approvals for devices such as ours.

We may not obtain the necessary regulatory approvals to market our Maestro System in the United States or anywhere else. Even if we
obtain approval, the FDA or other regulatory authorities may require expensive or burdensome post-market testing or controls. Any delay in, failure to receive or maintain, or significant limitation on approval for our Maestro System could prevent us
from generating revenue or achieving profitability and we may be forced to cease operations.

The preliminary results of the blinded
segment of our EMPOWER trial were not sufficient to support approval of a PMA application, and this has delayed regulatory approval of our Maestro System.

In September 2009, we completed the blinded segment of our EMPOWER pivotal trial, a randomized, prospective, placebo-controlled multi-center trial of our Maestro System in the United States. Based on our
initial analysis, the EMPOWER trial did not meet its primary and secondary efficacy endpoints in that the weight loss for the treatment arm was not statistically different from the control arm in which therapy was turned off. The study did meet its
safety endpoint. The inability to achieve our primary and secondary efficacy endpoints in the EMPOWER trial has delayed our timeline for achieving regulatory approval of the Maestro System in the U.S. and caused us to need additional capital to fund
a new pivotal trial. We may never be able to produce sufficient data to support a PMA application with the FDA or commercialize a product in the U.S.

We may be unable to enroll and complete a pivotal trial using our second generation Maestro RC System or other clinical trials, or we may experience significant delays in completing our clinical
trials, which could prevent or delay regulatory approval of our Maestro System and impair our financial position.

In
October 2010, we obtained an unconditional Investigational Device Exemption (IDE) for a pivotal trial using our second generation Maestro RC System. Assuming that we successfully enroll and implant the trial and achieve favorable results, we plan to
use data from that trial to support a PMA application for the Maestro System. We expect to commence the trial upon approval from the relevant institutional review boards at the various sites at which we intend to conduct the trial. Conducting a
clinical trial of this size, which involves screening, assessing, testing, treating and monitoring patients at several sites across the country and possibly internationally, and coordinating with patients and clinical institutions, is a complex and
uncertain process.

The commencement of our trial could be delayed for a variety of reasons, including:



| |  |  | reaching agreement on acceptable terms with prospective clinical trial sites;
| | - |  | -----------------------------------------------------------------------------



| |  |  | manufacturing sufficient quantities of our Maestro System;
| | - |  | ----------------------------------------------------------



| |  |  | obtaining institutional review board approval to conduct the trial at a prospective site; and
| | - |  | ---------------------------------------------------------------------------------------------



| |  |  | obtaining sufficient patient enrollment, which is a function of many factors, including the size of the patient population, the nature of the protocol,
the proximity of patients to clinical sites, the difficulty in getting patients to endure the implant for the control arm, and the eligibility criteria for the trial.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Once the trial has begun, the completion of the trial, and our other ongoing clinical trials, could be delayed, suspended or terminated
for several reasons, including:



| |  |  | ongoing discussions with regulatory authorities regarding the scope or design of our preclinical results or clinical trial or requests for supplemental
information with respect to our preclinical results or clinical trial results;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | our failure or inability to conduct the clinical trials in accordance with regulatory requirements;
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | sites currently participating in the trial may drop out of the trial, which may require us to engage new sites or petition the FDA for an expansion of
the number of sites that are permitted to be involved in the trial;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | patients may not remain in or complete, clinical trials at the rates we expect;
| | - |  | -------------------------------------------------------------------------------



| |  |  | patients may experience serious adverse events or side effects during the trial, which, whether or not related to our product, could cause the FDA or
other regulatory authorities to place the clinical trial on hold;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | clinical investigators may not perform our clinical trials on our anticipated schedule or consistent with the clinical trial protocol and good clinical
practices; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | we may be unable to obtain a sufficient supply of our Maestro System necessary for the timely conduct of the clinical trials.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------

If our clinical trials are delayed it will take us longer to ultimately commercialize a product and
generate revenue or the delay could result in our being unable to do so. Moreover, our development costs will increase if we have material delays in our clinical trials or if we need to perform more or larger clinical trials than planned.

Even if we obtain the necessary regulatory approvals, our efforts to commercialize our Maestro System may not succeed or may encounter
delays which could significantly harm our ability to generate revenue.

If we obtain regulatory approval to market our
Maestro System, our ability to generate revenue will depend upon the successful commercialization of this product. Our efforts to commercialize our Maestro System may not succeed for a number of reasons, including:



| |  |  | our Maestro System may not be accepted in the marketplace by physicians, patients and third-party payors;
| | - |  | ---------------------------------------------------------------------------------------------------------



| |  |  | the price of our Maestro System, associated costs of the surgical procedure and treatment and the availability of sufficient third-party reimbursement
for the procedure and therapy implantation and follow-up procedures;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | appropriate reimbursement and/or coding options may not exist to enable billing for the system implantation and follow-up procedures;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------



| |  |  | we may not be able to sell our Maestro System at a price that allows us to meet the revenue targets necessary to generate revenue for profitability;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the frequency and severity of any side effects of our VBLOC therapy;
| | - |  | --------------------------------------------------------------------



| |  |  | physicians and potential patients may not be aware of the perceived effectiveness and sustainability of the results of VBLOC therapy provided by our
Maestro System;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | we, or the investigators of our product, may not be able to have information on the outcome of the trials published in medical journals;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the availability and perceived advantages and disadvantages of alternative treatments;
| | - |  | --------------------------------------------------------------------------------------



| |  |  | any rapid technological change may make our product obsolete;
| | - |  | -------------------------------------------------------------



| |  |  | we may not be able to have our Maestro System manufactured in commercial quantities or at an acceptable cost;
| | - |  | -------------------------------------------------------------------------------------------------------------



| |  |  | we may not have adequate financial or other resources to complete the development and commercialization of our Maestro System or to develop sales and
marketing capabilities for our Maestro System; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | we may be sued for infringement of intellectual property rights and could be enjoined from manufacturing or selling our products.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------



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Besides requiring physician adoption, market acceptance of our Maestro System will depend on
successfully communicating the benefits of our VBLOC therapy to three additional constituencies involved in deciding whether to treat a particular patient using such therapy: (1) the potential patients themselves; (2) institutions such as
hospitals, where the procedure would be performed and opinion leaders in these institutions; and (3) third-party payors, such as private healthcare insurers and governmental payors, such as Medicare and Medicaid in the U.S., and Medical
Services Advisory Committee (MSAC) in Australia, which would ultimately bear most of the costs of the various providers and equipment involved in our VBLOC therapy. Marketing to each of these constituencies requires a different marketing approach,
and we must convince each of these groups of the efficacy and utility of our VBLOC therapy to be successful.

If our VBLOC
therapy, or any other neuroblocking therapy for other gastrointestinal diseases and disorders that we may develop, does not achieve an adequate level of acceptance by the relevant constituencies, we may not generate significant product revenue and
may not become profitable. The earliest we expect to be able to commercialize our Maestro System is the second half of 2011 outside the United States and not until late 2013 within the United States, if at all. If we are not successful in the
commercialization of our Maestro System for the treatment of obesity we may never generate any revenue and may be forced to cease operations.

We depend on clinical investigators and clinical sites to enroll patients in our clinical trials, and on other third parties to manage the trials
and to perform related data collection and analysis, and, as a result, we may face costs and delays that are outside of our control.

We rely on clinical investigators and clinical sites to enroll patients in our clinical trials, including a new pivotal trial using our second generation Maestro RC System, and other third parties to
manage the trials and to perform related data collection and analysis. However, we may not be able to control the amount and timing of resources that clinical sites may devote to our clinical trials. If these clinical investigators and clinical
sites fail to enroll a sufficient number of patients in our clinical trials, to ensure compliance by patients with clinical protocols or comply with regulatory requirements, we will be unable to complete these trials, which could prevent us from
obtaining regulatory approvals for our product. Our agreements with clinical investigators and clinical trial sites for clinical testing place substantial responsibilities on these parties and, if these parties fail to perform as expected, our
trials could be delayed or terminated. If these clinical investigators, clinical sites or other third parties do not carry out their contractual duties or obligations or fail to meet expected deadlines, or if the quality or accuracy of the clinical
data they obtain is compromised due to their failure to adhere to our clinical protocols, regulatory requirements or for other reasons, our clinical trials may be extended, delayed or terminated, or the clinical data may be rejected by the FDA, and
we may be unable to obtain regulatory approval for, or successfully commercialize, our product.

Assuming we receive regulatory approval
for the Maestro System, modifications to the Maestro System may require additional approval from the regulatory agencies such as FDA and TGA, which may not be obtained or may delay our commercialization efforts.

The FDA and TGA require medical device companies to initially make and document a determination of whether or not a modification requires
a new approval, supplement or clearance; however, the FDA can review a companys decision. Any modifications to an FDA- or TGA-approved device that could significantly affect its safety or efficacy, or that would constitute a major change in
its intended use could require additional clinical studies and separate regulatory applications. Product changes or revisions will require all the regulatory steps and associated risks discussed above possibly including testing, regulatory filings
and clinical study. We may not be able to obtain approval of supplemental regulatory approvals for product modifications, new indications for our product or new products. Delays in obtaining future clearances would adversely affect our ability to
introduce new or enhanced products in a timely manner, which in turn would harm our commercialization efforts and future growth.



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Our neuroblocking therapy for the treatment of obesity is a unique form of treatment. Physicians may
not widely adopt our Maestro System and VBLOC therapy unless they determine, based on experience, long-term clinical data and published peer reviewed journal articles, that VBLOC therapy provides a safe and effective alternative to other existing
treatments for obesity.

We believe we are the first and only company currently pursuing neuroblocking therapy for the
treatment of obesity. Physicians tend to be slow to change their medical treatment practices because of the time and skill required to learn a new procedure, the perceived liability risks arising from the use of new products and procedures, and the
uncertainty of third-party coverage and reimbursement. Physicians may not widely adopt our Maestro System and VBLOC therapy unless they determine, based on experience, long-term clinical data and published peer reviewed journal articles, that the
use of our VBLOC therapy provides a safe and effective alternative to other existing treatments for obesity, including pharmaceutical solutions and bariatric surgical procedures.

We cannot provide any assurance that the data collected from our current and planned clinical trials will be sufficient to demonstrate
that our VBLOC therapy is an attractive alternative to other obesity treatment procedures. We rely on experienced and highly trained surgeons to perform the procedures in our clinical trials and both short-and long-term results reported in our
clinical trials may be significantly more favorable than typical results of practicing physicians, which could negatively impact rates of adoption of our Maestro System and VBLOC therapy. We believe that published peer-reviewed journal articles and
recommendations and support by influential physicians regarding our Maestro System and VBLOC therapy will be important for market acceptance and adoption, and we cannot assure you that we will receive these recommendations and support, or that
supportive articles will be published.

If we fail to obtain adequate coding, coverage or payment levels for our product by governmental
healthcare programs and other third-party payors, there may be no commercially viable markets for our Maestro System or other products we may develop or our target markets may be much smaller than expected.

Healthcare providers generally rely on third-party payors, including governmental payors, such as Medicare and Medicaid in the U.S., and
MSAC in Australia, as well as private healthcare insurers, to adequately cover and reimburse the cost of medical devices. Importantly, third-party payors are increasingly challenging the price of medical products and services and instituting cost
containment measures to control or significantly influence the purchase of medical products and services. We expect that third-party payors will continue to attempt to contain or reduce the costs of healthcare by challenging the prices charged for
healthcare products and services. If reimbursement for our Maestro System and the related surgery and facility costs is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels, market acceptance of our Maestro System
will be impaired and our future revenue, if any, would be adversely affected. As such, even if we obtain regulatory clearance or approval for our Maestro System and begin to market it, the availability and level of third-party coverage and
reimbursement could substantially affect our ability to commercialize our Maestro System and other products we may develop.

The efficacy, safety, ease of use and cost-effectiveness of our Maestro System and of any competing products will, in part, determine the
availability and level of coverage and payment. In particular, we expect that securing coding, coverage and payment for our Maestro System will be more difficult if our clinical trials do not demonstrate a percentage of excess weight loss from a
pre-implementation baseline that healthcare providers and obese individuals consider clinically meaningful, whether or not regulatory agencies consider the improvement of patients treated in clinical trials to have been clinically meaningful.

In some international markets, pricing of medical devices is subject to government control. In the United States and
international markets, we expect that both government and third-party payors will continue to attempt to contain or reduce the costs of healthcare by challenging the prices charged for healthcare products and services. If payment for our Maestro
System and the related surgery and facility costs is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels, market acceptance of our Maestro System will be impaired and our future revenue, if any, would be
adversely affected.



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We cannot predict the likelihood or pace of any significant regulatory or legislative action
in any of these areas, nor can we predict whether or in what form healthcare legislation being formulated by various governments will be passed. We also cannot predict with precision what effect such governmental measures would have if they were
ultimately enacted into law. However, in general, we believe that such legislative activity will likely continue. If adopted, such measures can be expected to have an impact on our business.

Even if our Maestro System is approved by regulatory authorities, if we or our suppliers fail to comply with ongoing regulatory requirements, or if we experience unanticipated product problems, our
Maestro System could be subject to restrictions or withdrawal from the market.

Completion of our clinical trials and
commercialization of our Maestro System will require access to manufacturing facilities that meet applicable regulatory standards to manufacture a sufficient supply of our product. We rely solely on third parties to manufacture and assemble our
Maestro System, and do not currently plan to manufacture or assemble our Maestro System ourselves in the future.

Any product
for which we obtain marketing approval, along with the manufacturing processes, post-approval clinical data and promotional activities for such product, will be subject to continual review and periodic inspections by our European Notified Body and
the FDA and other regulatory bodies. In particular we and our manufacturers and suppliers are required to comply with ISO requirements, Good Manufacturing Practices (GMP), which for medical devices is called the Quality System Regulation (QSR), and
other regulations which cover the methods and documentation of the design, testing, production, control, quality assurance, labeling, packaging, storage and shipping of any product for which we obtain marketing approval. The FDA enforces the QSR
through unannounced inspections and the CE system enforces its certification through inspections and audits as well. We and our third-party manufacturers and suppliers have not yet been inspected by the FDA but have received European ISO
certification to standards ISO 13485:2003 and will have to continue to successfully complete such inspections to maintain regulatory approvals for sales outside the United States and will have to successfully complete such inspections before we
receive regulatory approvals for our Maestro System in the United States. Failure by us or one of our manufacturers or suppliers to comply with statutes and regulations administered by the FDA, CE authorities and other regulatory bodies, or failure
to adequately respond to any observations, could result in enforcement actions against us or our manufacturers or suppliers, including, restrictions on our product or manufacturing processes, withdrawal of the product from the market, voluntary or
mandatory recall, fines, suspension of regulatory approvals, product seizures, injunctions or the imposition of civil or criminal penalties.

If any of these actions were to occur it would harm our reputation and cause our product sales to suffer. Furthermore, our key component suppliers may not currently be or may not continue to be in
compliance with applicable regulatory requirements. If the FDA or any other regulatory body finds their compliance status to be unsatisfactory, our commercialization efforts could be delayed, which would harm our business and our results of
operations.

Even if regulatory approval of a product is granted, the approval may be subject to limitations on the indicated
uses for which the product may be marketed. If the FDA determines that our promotional materials, training or other activities constitute promotion of an unapproved use, we could be subject to significant liability, the FDA could request that we
cease, correct or modify our training or promotional materials or subject us to regulatory enforcement actions. It is also possible that other federal, state or foreign enforcement authorities might take action if they consider our training or other
promotional materials to constitute promotion of an unapproved use, which could result in significant fines or penalties under other statutory authorities, such as laws prohibiting false claims for reimbursement.

We are subject to medical device reporting regulations (MDR) that require us to report to the FDA and TGA or governmental authorities in
other countries if our products cause or contribute to a death or serious injury or malfunction in a way that would be reasonably likely to contribute to death or serious injury if the malfunction



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were to recur. The FDA, TGA and similar governmental authorities in other countries have the authority to require the recall of our products in the event of material deficiencies or defects in
design or manufacturing. A government mandated, or voluntary, recall by us could occur as a result of component failures, manufacturing errors or design defects, including defects in labeling. Any recall would divert managerial and financial
resources and could harm our reputation with customers. There can be no assurance that there will not be product recalls in the future or that such recalls would not have a material adverse effect on our business. Once the product is approved and
implanted in a large number of patients, infrequently occurring adverse events may appear that were not observed in the clinical trials. This could cause health authorities in countries where the product is available to take regulatory action,
including marketing suspension and recall.

We may not be successful in our efforts to utilize our VBLOC therapy to treat co-morbidities
associated with obesity and other gastrointestinal diseases and disorders.

As part of our long-term business
strategy, we plan to research the application of our VBLOC therapy to treat co-morbidities associated with obesity and other gastrointestinal diseases and disorders. Research to identify new target applications requires substantial technical,
financial and human resources, whether or not any new applications for our VBLOC therapy are ultimately identified. We may be unable to identify or pursue other applications of our technology. Even if we identify potential new applications for our
VBLOC therapy, investigating the safety and efficacy of our therapy requires extensive clinical testing, which is expensive and time-consuming. If we terminate a clinical trial in which we have invested significant resources, our prospects will
suffer, as we will have expended resources on a program that will not provide a return on our investment and missed the opportunity to allocate those resources to potentially more productive uses. We will also need to obtain regulatory approval for
these new applications, as well as achieve market acceptance and an acceptable level of reimbursement.

We depend on a limited number of
manufacturers and suppliers of various critical components for our Maestro System. The loss of any of these manufacturer or supplier relationships could delay our clinical trials or prevent or delay commercialization of our Maestro System.

We rely entirely on third parties to manufacture our Maestro System and to supply us with all of the critical
components of our Maestro System, including our leads, implantable batteries, neuroregulators and controllers. If any of our existing suppliers were unable or unwilling to meet our demand for product components, or if the components or finished
products that they supply do not meet quality and other specifications, clinical trials or commercialization of our product could be delayed. Alternatively, if we have to switch to a replacement manufacturer or replacement supplier for any of our
product components, we may face additional regulatory delays, and the manufacture and delivery of our Maestro System could be interrupted for an extended period of time, which could delay completion of our clinical trials or commercialization of our
Maestro System. In addition, we may be required to use different suppliers or components to obtain regulatory approval from the FDA.

If
our device manufacturers or our suppliers are unable to provide an adequate supply of our product following the start of commercialization, our growth could be limited and our business could be harmed.

In order to produce our Maestro System in the quantities that we anticipate will be required to meet anticipated market demand, we will
need our manufacturers to increase, or scale-up, the production process by a significant factor over our current level of production. There are technical challenges to scaling-up manufacturing capacity and developing commercial-scale manufacturing
facilities that may require the investment of substantial additional funds by our manufacturers and hiring and retaining additional management and technical personnel who have the necessary manufacturing experience. If our manufacturers are unable
to do so, we may not be able to meet the requirements for the launch of the product or to meet future demand, if at all. We may also represent only a small portion of our suppliers or manufacturers business and if they become capacity
constrained they may choose to allocate their available resources to other customers that represent a



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larger portion of their business. We currently anticipate that we will continue to rely on third-party manufacturers and suppliers for the production of the Maestro System following
commercialization. If we develop and obtain regulatory approval for our product and are unable to obtain a sufficient supply of our product, our revenue, business and financial prospects would be adversely affected.

If we are unable to establish sales and marketing capabilities or enter into and maintain arrangements with third parties to market and sell our
Maestro System, our business may be harmed.

We do not have a sales organization and have no experience as a company in
sales, marketing and distribution of our product. To generate sales we will need to identify and enter into an agreement with a third-party distributor in Australia, our intended first market for product commercial launch. There is no assurance that
we can do so on economically acceptable terms or that if we do so, that third party will be successful in selling our product. In the rest of the world and the United States, we will also develop a sales and marketing infrastructure or contract with
third parties to perform that function. Developing a sales force is expensive and time consuming and could delay or limit the success of any product launch. Even if we obtain approval from the FDA to market our Maestro System, we may be unable to
develop an effective sales and marketing organization on a timely basis, if at all. If we develop our own sales and marketing capabilities, our sales force will be competing with the experienced and well-funded marketing and sales organizations of
our more established competitors. If we are unable to establish our own sales and marketing capabilities, we will need to contract with third parties to market and sell our product. In this event, our profit margins would likely be lower than if we
performed these functions ourselves. In addition, we would necessarily be relying on the skills and efforts of others for the successful marketing of our product. If we are unable to establish and maintain effective sales and marketing capabilities,
independently or with others, we may not be able to generate product revenue and may not become profitable.

If we attempt to
commercialize our products outside of the United States, our business will be susceptible to risks associated with international operations.

We intend to commercialize our products internationally, initially in Australia, and subsequently in other international markets, if any, in which we obtain necessary regulatory approvals. Conducting
international operations would subject us to unique risks, including:



| |  |  | unfamiliar legal requirements with which we would need to comply;
| | - |  | -----------------------------------------------------------------



| |  |  | fluctuations in currency exchange rates;
| | - |  | ----------------------------------------



| |  |  | potentially adverse tax consequences, including the complexities of foreign value added tax systems and restrictions on the repatriation of earnings;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | increased financial accounting and reporting burdens and complexities; and
| | - |  | --------------------------------------------------------------------------



| |  |  | reduced or varied protection for intellectual property rights in some countries.
| | - |  | --------------------------------------------------------------------------------

The occurrence of any one of these risks could negatively affect our business and results of operations generally. Additionally,
operating in international markets requires significant management attention. We cannot be certain that investments required to establish operations in other countries will produce desired levels of revenues or profitability.

We may be unable to attract and retain management and other personnel we need to succeed.

Our success depends on the services of our senior management and other key research and development employees. The loss of the services of
one or more of our officers or key research and development employees could delay or prevent the successful completion of our clinical trials and the commercialization of our Maestro System. Upon receiving regulatory approval for our product, we
expect to expand our operations and grow our research and development, product development and administrative operations. Our growth will require hiring a



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number of qualified clinical, scientific, commercial and administrative personnel. Accordingly, recruiting and retaining such personnel in the future will be critical to our success. There is
intense competition from other companies and research and academic institutions for qualified personnel in the areas of our activities. If we fail to identify, attract, retain and motivate these highly skilled personnel, we may be unable to continue
our development and commercialization activities.

We may be unable to manage our growth effectively.

Our business strategy entails significant future growth. For example, we will have to expand existing operations in order to conduct
additional clinical trials, increase our contract manufacturing capabilities, hire and train new personnel to handle the marketing and sales of our product, assist patients in obtaining reimbursement for the use of our product and create and develop
new applications for our technology. This growth may place significant strain on our management and financial and operational resources. Successful growth is also dependent upon our ability to implement appropriate financial and management controls,
systems and procedures. Our ability to effectively manage growth depends on our success in attracting and retaining highly qualified personnel, for which the competition may be intense. If we fail to manage these challenges effectively, our business
could be harmed.

We face the risk of product liability claims that could be expensive, divert managements attention and harm our
reputation and business. We may not be able to obtain adequate product liability insurance.

Our business exposes us to
a risk of product liability claims that is inherent in the testing, manufacturing and marketing of medical devices. The medical device industry has historically been subject to extensive litigation over product liability claims. We may be subject to
product liability claims if our Maestro System, or any other products we may sell, causes, or appears to have caused, an injury. Claims may be made by consumers, healthcare providers, third-party strategic collaborators or others selling our
products.

We have $5.0 million of product liability insurance, which covers the use of our Maestro System and VBLOC therapy
in our clinical trials, which amount we believe is appropriate. Our current product liability insurance may not continue to be available to us on acceptable terms, if at all, and, if available, the coverage may not be adequate to protect us against
any future product liability claims. If we are unable to obtain insurance at an acceptable cost and on acceptable terms for an adequate coverage amount, or otherwise to protect against potential product liability claims, we could be exposed to
significant liabilities, which may harm our business. A product liability claim, recall or other claim with respect to uninsured liabilities or for amounts in excess of insured liabilities could have a material adverse effect on our business,
financial condition and results of operations. These liabilities could prevent or interfere with our product commercialization efforts. Defending a suit, regardless of merit, could be costly, could divert management attention and might result in
adverse publicity, which could result in the withdrawal of, or inability to recruit, clinical trial volunteers or result in reduced acceptance of our Maestro System and VBLOC therapy in the market.

We may be subject to product liability claims even if it appears that the claimed injury is due to the actions of others. For example, we
rely on the expertise of surgeons and other associated medical personnel to perform the medical procedure to implant and remove our Maestro System and to perform the related VBLOC therapy. If these medical personnel are not properly trained or are
negligent, the therapeutic effect of our Maestro System and VBLOC therapy may be diminished or the patient may suffer critical injury, which may subject us to liability. In addition, an injury that is caused by the negligence of one of our suppliers
in supplying us with a defective component that injures a patient could be the basis for a claim against us. A product liability claim, regardless of its merit or eventual outcome, could result in decreased demand for our products; injury to our
reputation; diversion of managements attention; withdrawal of clinical trial participants; significant costs of related litigation; substantial monetary awards to patients; product recalls or market withdrawals; loss of revenue; and the
inability to commercialize our products under development.



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We may be subject, directly or indirectly, to United States federal and state healthcare fraud and
abuse and false claims laws and regulations. Prosecutions under such laws have increased in recent years and we may become subject to such litigation. If we are unable to, or have not fully complied with such laws, we could face substantial
penalties.

If we are successful in achieving regulatory approval to market our Maestro System, our operations will be
directly, or indirectly through our customers, subject to various state and federal fraud and abuse laws, including, without limitation, the federal Anti-Kickback Statute and federal False Claims Act. These laws may impact, among other things, our
proposed sales, marketing and education programs.

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 healthcare program such as the Medicare and Medicaid programs. Several courts have interpreted the statutes intent requirement to mean that if any one purpose of an arrangement involving remuneration is to induce referrals of federal
healthcare covered business, the statute has been violated. The Anti-Kickback Statute is broad and, despite a series of narrow safe harbors, prohibits many arrangements and practices that are lawful in businesses outside of the healthcare industry.
Penalties for violations of the federal Anti-Kickback Statute include criminal penalties and civil sanctions such as fines, imprisonment and possible exclusion from Medicare, Medicaid and other federal healthcare programs. Many states have also
adopted laws similar to the federal Anti-Kickback Statute, some of which apply to the referral of patients for healthcare items or services reimbursed by any source, not only the Medicare and Medicaid programs.

The federal False Claims Act prohibits persons from knowingly filing, or causing to be filed, a false claim to, or the knowing use of
false statements to obtain payment from the federal government. Suits filed under the False Claims Act, known as qui tam actions, can be brought by any individual on behalf of the government and such individuals, commonly known as
whistleblowers, may share in any amounts paid by the entity to the government in fines or settlement. The frequency of filing qui tam actions has increased significantly in recent years, causing greater numbers of medical device,
pharmaceutical and healthcare companies to have to defend a False Claim Act action. When an entity is determined to have violated the federal False Claims Act, it may be required to pay up to three times the actual damages sustained by the
government, plus civil penalties for each separate false claim. Various states have also enacted laws modeled after the federal False Claims Act.

We are unable to predict whether we could be subject to actions under any of these laws, or the impact of such actions. If we are found to be in violation of any of the laws described above and other
applicable state and federal fraud and abuse laws, we may be subject to penalties, including civil and criminal penalties, damages, fines, exclusion from government healthcare reimbursement programs and the curtailment or restructuring of our
operations.

We operate in a highly competitive industry that is subject to rapid change. If our competitors are able to develop and
market products that are safer or more effective than our products, our commercial opportunities will be reduced or eliminated.

The health care industry is highly competitive, subject to rapid change and significantly affected by new product introductions and other market activities of industry participants. The obesity treatment
market in which we operate has grown significantly in recent years and is expected to continue to expand as technology continues to evolve and awareness of the need to treat the obesity epidemic grows. Although we are not aware of any competitors in
the neuroblocking market, we face potential competition from pharmaceutical and surgical obesity treatments. Many of our competitors in the obesity treatment field have significantly greater financial resources and expertise in research and
development, manufacturing, preclinical testing, clinical trials, obtaining regulatory approvals and marketing approved products than we do. Smaller or early-stage companies may also prove to be significant competitors, particularly if they pursue
competing solutions through collaborative arrangements with



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large and established companies, such as Allergan, Cyberonics, Johnson & Johnson, Medtronic or St. Jude Medical. Our competitors may develop and patent processes or products earlier than
us, obtain regulatory approvals for competing products more rapidly than we are able to and develop more effective, safer and less expensive products or technologies that would render our products non-competitive or obsolete.

Risks Related to Intellectual Property

If we are unable to obtain or maintain intellectual property rights relating to our technology and neuroblocking therapy, the commercial value of
our technology and any future products will be adversely affected and our competitive position will be harmed.

Our
commercial success depends in part on our ability to obtain protection in the United States and other countries for our Maestro System and VBLOC therapy by establishing and maintaining intellectual property rights relating to or incorporated into
our technology and products. To date, we have 15 issued U.S. patents, 13 of which pertain to treating gastrointestinal disorders, and 20 U.S. patent applications. We have two granted European patents and one granted Australian patent. We also have
10 Australian patent applications, 11 European patent applications, three Chinese patent applications, three Indian patent applications and two Japanese patent applications. In addition, we are the exclusive licensee to one U.S. patent and one
patent application owned by Mayo Foundation for Medical Education and Research, which are unrelated to our VBLOC therapy. Our pending and future patent applications may not issue as patents or, if issued, may not issue in a form that will provide us
any competitive advantage. We expect to incur substantial costs in obtaining patents and, if necessary, defending our proprietary rights. The patent positions of medical device companies, including ours, can be highly uncertain and involve complex
and evolving legal and factual questions. We do not know whether we will obtain the patent protection we seek, or that the protection we do obtain will be found valid and enforceable if challenged. If we fail to obtain adequate protection of our
intellectual property, or if any protection we obtain is reduced or eliminated, others could use our intellectual property without compensating us, resulting in harm to our business. We may also determine that it is in our best interests to
voluntarily challenge a third partys products or patents in litigation or administrative proceedings, including patent interferences or re-examinations. In the event that we seek to enforce any of our owned or exclusively licensed patents
against an infringing party, it is likely that the party defending the claim will seek to invalidate the patents we assert, which, if successful could result in the loss of the entire patent or the relevant portion of our patent, which would not be
limited to any particular party. Any litigation to enforce or defend our patent rights, even if we were to prevail, could be costly and time-consuming and could divert the attention of our management and key personnel from our business operations.
Even if we were to prevail in any litigation, we cannot assure you that we can obtain an injunction that prevents our competitors from practicing our patented technology. Our competitors may independently develop similar or alternative technologies
or products without infringing any of our patent or other intellectual property rights, or may design around our proprietary technologies.

We cannot assure you that we will obtain any patent protection that we seek, that any protection we do obtain will be found valid and enforceable if challenged or that it will confer any significant
commercial advantage. U.S. patents and patent applications may also be subject to interference proceedings and U.S. patents may be subject to re-examination proceedings in the U.S. Patent and Trademark Office (USPTO) and foreign
patents may be subject to opposition or comparable proceedings in the corresponding foreign patent offices, which proceedings could result in either loss of the patent or denial of the patent application, or loss or reduction in the scope of one or
more of the claims of, the patent or patent application. In addition, such interference, re-examination and opposition proceedings may be costly. Moreover, the U.S. patent laws may change, possibly making it easier to challenge patents. Some of our
technology was, and continues to be, developed in conjunction with third parties, and thus there is a risk that such third parties may claim rights in our intellectual property. Thus, any patents that we own or license from others may provide
limited or no protection against competitors. Our pending patent applications, those we may file in the future, or those we may license from third parties, may not result in patents being issued. If issued, they may not provide us with proprietary
protection or competitive advantages against competitors with similar technology.



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Non-payment or delay in payment of patent fees or annuities, whether intentional or
unintentional, may result in loss of patents or patent rights important to our business. Many countries, including certain countries in Europe, have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third
parties. In addition, many countries limit the enforceability of patents against third parties, including government agencies or government contractors. In these countries, the patent owner may have limited remedies, which could materially diminish
the value of the patent. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as do the laws of the United States, particularly in the field of medical products and procedures.

Many of our competitors have significant resources and incentives to apply for and obtain intellectual property rights that could limit or prevent
our ability to commercialize our current or future products in the United States or abroad.

Many of our competitors
who have significant resources and have made substantial investments in competing technologies may seek to apply for and obtain patents that will prevent, limit or interfere with our ability to make, use or sell our products either in the United
States or in international markets. Our current or future U.S. or foreign patents may be challenged, circumvented by competitors or others or may be found to be invalid, unenforceable or insufficient. Since patent applications are confidential until
patents are issued in the United States, or in most cases, until after 18 months from filing of the application, or corresponding applications are published in other countries, and since publication of discoveries in the scientific or patent
literature often lags behind actual discoveries, we cannot be certain that we were the first to make the inventions covered by each of our pending patent applications, or that we were the first to file patent applications for such inventions.

If we are unable to protect the confidentiality of our proprietary information and know-how, the value of our technology and products
could be adversely affected.

In addition to patented technology, we rely on our unpatented proprietary technology,
trade secrets, processes and know-how. We generally seek to protect this information by confidentiality agreements with our employees, consultants, scientific advisors and third parties. These agreements may be breached, and we may not have adequate
remedies for any such breach. In addition, our trade secrets may otherwise become known or be independently developed by competitors. To the extent that our employees, consultants or contractors use intellectual property owned by others in their
work for us, disputes may arise as to the rights in related or resulting know-how and inventions.

Intellectual property litigation is a
common tactic in the medical device industry to gain competitive advantage. If we become subject to a lawsuit, we may be required to expend significant financial and other resources and our managements attention may be diverted from our
business.

There has been a history of frequent and extensive litigation regarding patent and other intellectual
property rights in the medical device industry, and companies in the medical device industry have employed intellectual property litigation to gain a competitive advantage. Accordingly, we may become subject to patent infringement claims or
litigation in a court of law, or interference proceedings declared by the USPTO to determine the priority of inventions or an opposition to a patent grant in a foreign jurisdiction. We may also become subject to claims or litigation seeking payment
of royalties based on sales of our product in connection with licensing or similar joint development arrangements with third parties or in connection with claims of patent infringement. The defense and prosecution of intellectual property suits,
USPTO interference or opposition proceedings and related legal and administrative proceedings, are both costly and time consuming and could result in substantial uncertainty to us. Litigation or regulatory proceedings may also be necessary to
enforce patent or other intellectual property rights of ours or to determine the scope and validity of other parties proprietary rights. Any litigation, opposition or interference proceedings, with or without merit, may result in substantial
expense to us, cause significant strain on our financial resources, divert the attention of our technical and management personnel and harm our reputation. We may not have the financial resources to defend our patents from



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infringement or claims of invalidity. An adverse determination in any litigation could subject us to significant liabilities to third parties, require us to seek licenses from or pay royalties to
third parties or prevent us from manufacturing, selling or using our proposed products, any of which could have a material adverse effect on our business and prospects. We are not currently a party to any patent or other litigation.

Our VBLOC therapy or Maestro System may infringe or be claimed to infringe patents that we do not own or license, including patents that
may issue in the future based on patent applications of which we are currently aware, as well as applications of which we are unaware. For example, we are aware of other companies that are investigating neurostimulation, including neuroblocking, and
of patents and published patent applications held by companies in those fields. While we believe that none of such patents and patent applications are applicable to our products and technologies under development, third parties who own or control
these patents and patent applications in the United States and abroad could bring claims against us that would cause us to incur substantial expenses and, if such claims are successfully asserted against us, they could cause us to pay substantial
damages, could result in an injunction preventing us from selling, manufacturing or using our proposed products and would divert managements attention. Because patent applications in many countries such as the United States are maintained
under conditions of confidentiality and can take many years to issue, there may be applications now pending of which we are unaware and which may later result in issued patents that our products infringe. If a patent infringement suit were brought
against us, we could be forced to stop our ongoing or planned clinical trials, or delay or abandon commercialization of the product that is subject of the suit.

As a result of patent infringement claims, or to avoid potential claims, we may choose or be required to seek a license from a third party and be required to pay license fees or royalties, or both. A
license may not be available at all or on commercially reasonable terms, and we may not be able to redesign our products to avoid infringement. Modification of our products or development of new products could require us to conduct additional
clinical trials and to revise our filings with the FDA and other regulatory bodies, which would be time-consuming and expensive. Even if we were able to obtain a license, the rights may be nonexclusive, which could result in our competitors gaining
access to the same intellectual property. Ultimately, we could be forced to cease some aspect of our business operations if, as a result of actual or threatened patent infringement claims, we are unable to enter into licenses on acceptable terms.
This could harm our business significantly.

Risks Relating to Ownership of Our Common Stock

The trading price of our common stock has been volatile and is likely to be volatile in the future.

The trading price of our common stock has been highly volatile. Further, our common stock has a limited trading history. Since our public
offering in November 2007 through February 28, 2011 our stock price has fluctuated from a low of $1.52 to a high of $64.62, as adjusted for the 1-for-6 reverse split of our common stock that was effected on July 9, 2010. The market price
for our common stock will be affected by a number of factors, including:



| |  |  | the denial or delay of regulatory clearances or approvals of our product or receipt of regulatory approval of competing products;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------



| |  |  | our ability to accomplish clinical, regulatory and other product development milestones and to do so in accordance with the timing estimates we have
publicly announced;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | changes in policies affecting third-party coverage and reimbursement in the United States and other countries;
| | - |  | --------------------------------------------------------------------------------------------------------------



| |  |  | changes in government regulations and standards affecting the medical device industry and our product;
| | - |  | ------------------------------------------------------------------------------------------------------



| |  |  | ability of our product, if it receives regulatory approval, to achieve market success;
| | - |  | --------------------------------------------------------------------------------------



| |  |  | the performance of third-party contract manufacturers and component suppliers;
| | - |  | ------------------------------------------------------------------------------



| |  |  | our ability to develop sales and marketing capabilities;
| | - |  | --------------------------------------------------------



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| |  |  | actual or anticipated variations in our results of operations or those of our competitors;
| | - |  | ------------------------------------------------------------------------------------------



| |  |  | announcements of new products, technological innovations or product advancements by us or our competitors;
| | - |  | ----------------------------------------------------------------------------------------------------------



| |  |  | developments with respect to patents and other intellectual property rights;
| | - |  | ----------------------------------------------------------------------------



| |  |  | sales of common stock or other securities by us or our stockholders in the future;
| | - |  | ----------------------------------------------------------------------------------



| |  |  | additions or departures of key scientific or management personnel;
| | - |  | ------------------------------------------------------------------



| |  |  | disputes or other developments relating to proprietary rights, including patents, litigation matters and our ability to obtain patent protection for
our technologies;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | trading volume of our common stock;
| | - |  | -----------------------------------



| |  |  | changes in earnings estimates or recommendations by securities analysts, failure to obtain or maintain analyst coverage of our common stock or our
failure to achieve analyst earnings estimates;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | public statements by analysts or clinicians regarding their perceptions of our clinical results or the effectiveness of our products;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------



| |  |  | decreases in market valuations of medical device companies; and
| | - |  | ---------------------------------------------------------------



| |  |  | general market conditions and other factors unrelated to our operating performance or the operating performance of our competitors.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------

The stock prices of many companies in the medical device industry have experienced wide fluctuations that
have often been unrelated to the operating performance of these companies. Following periods of volatility in the market price of a companys securities, securities class action litigation often has been initiated against a company. If class
action litigation is initiated against us, we may incur substantial costs and our managements attention may be diverted from our operations, which could significantly harm our business.

Our inability to comply with the listing requirements of the NASDAQ Capital Market could result in our common stock being delisted, which could affect its market price and liquidity and reduce our
ability to raise capital.

We are required to meet certain qualitative and financial tests (including a minimum closing
bid price of $1.00 per share for our common stock) to maintain the listing of our common stock on the NASDAQ Capital Market. If we do not maintain compliance with the continued listing requirements for the NASDAQ Capital Market within specified
periods and subject to permitted extensions, our common stock may be recommended for delisting (subject to any appeal we would file). If our common stock were delisted, it could be more difficult to buy or sell our common stock and to obtain
accurate quotations, and the price of our stock could suffer a material decline. Delisting would also impair our ability to raise capital.

The low trading volume of our common stock may adversely affect the price of our shares.

Although our common stock is listed on the NASDAQ Capital Market, our common stock has experienced low trading volume. Reported average
daily trading volume in our common stock for the three month period ended December 31, 2010, was approximately 142,305 shares. Although we believe that our December 2010 public offering will improve the liquidity for our common stock, there is
no assurance that the offering will increase the volume of trading in our common stock. Limited trading volume subjects our common stock to greater price volatility and may make it difficult for you to sell your shares at a price that is attractive
to you.

Our directors and executive officers hold a significant amount of our outstanding stock and could limit your ability to
influence the outcome of key transactions, including changes of control.

Our executive officers and directors and
entities affiliated with them beneficially own, in the aggregate (including options and warrants exercisable currently or within 60 days of December 31, 2010), approximately



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27.8% of our outstanding common stock. Our executive officers, directors and affiliated entities, if acting together, could be able to influence significantly all matters requiring approval by
our stockholders, including the election of directors and the approval of mergers or other significant corporate transactions. The concentration of ownership of our common stock may have the effect of delaying, preventing or deterring a change of
control of our company, could deprive our stockholders of an opportunity to receive a premium for their common stock as part of a sale of our company and may affect the market price of our common stock. This concentration of stock ownership may
adversely affect the trading price of our common stock due to investors perception that conflicts of interest may exist or arise.

Sales of a substantial number of shares of our common stock in the public market by existing stockholders, or the perception that they may occur,
could cause our stock price to decline.

Sales of substantial amounts of our common stock by us or by our stockholders,
announcements of the proposed sales of substantial amounts of our common stock or the perception that substantial sales may be made, could cause the market price of our common stock to decline. We may issue additional shares of our common stock in
follow-on offerings to raise additional capital or in connection with acquisitions or corporate alliances and we plan to issue additional shares to our employees, directors or consultants in connection with their services to us. All of the currently
outstanding shares of our common stock are freely tradable under federal and state securities laws, except for shares held by our directors, officers and certain greater than five percent stockholders, which may be subject to volume limitations.
Following the expiration of lock-up agreements entered into for the benefit of the underwriter of our December 2010 public offering by certain holders of our common stock, including our directors and executive officers and their affiliated entities,
7,184,078 shares of our common stock will become eligible for sale in the public markets from time to time, subject to restrictions under the Securities Act of 1933, as amended (the Securities Act). The underwriter may, in its sole discretion and at
any time, without notice, release all or any portion of the shares of common stock subject to the lock-up agreements for sale in the public and private markets prior to the expiration of the lock-up. Due to these factors, sales of a substantial
number of shares of our common stock in the public market could occur at any time and could reduce the market price of our common stock.

In addition, certain of our stockholders and warrantholders have rights, subject to some conditions, to require us to file registration statements covering their shares or to include their shares in
registration statements that we may file for ourselves or other stockholders. If we were to include in a company-initiated registration statement shares held by those holders pursuant to the exercise of their registration rights, the sale of those
shares could impair our ability to raise needed capital by depressing the price at which we could sell our common stock.

Our
organizational documents and Delaware law make a takeover of our company more difficult, which may prevent certain changes in control and limit the market price of our common stock.

Our certificate of incorporation and bylaws and Section 203 of the Delaware General Corporation Law contain provisions that may have
the effect of deterring or delaying attempts by our stockholders to remove or replace management, engage in proxy contests and effect changes in control. These provisions include:



| |  |  | the ability of our board of directors to create and issue preferred stock without stockholder approval, which could be used to implement anti-takeover
devices;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the authority for our board of directors to issue without stockholder approval up to 85,000,000 shares of common stock, that, if issued, would dilute
the ownership of our stockholders;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the advance notice requirement for director nominations or for proposals that can be acted upon at stockholder meetings;
| | - |  | ------------------------------------------------------------------------------------------------------------------------



| |  |  | a classified and staggered board of directors, which may make it more difficult for a person who acquires control of a majority of our outstanding
voting stock to replace all or a majority of our directors;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the prohibition on actions by written consent of our stockholders;
| | - |  | ------------------------------------------------------------------



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| |  |  | the limitation on who may call a special meeting of stockolders;
| | - |  | ----------------------------------------------------------------



| |  |  | the prohibition on stockholders accumulating their votes for the election of directors; and
| | - |  | -------------------------------------------------------------------------------------------



| |  |  | the ability of stockholders to amend our bylaws only upon receiving a majority of the votes entitled to be cast by holders of all outstanding shares
then entitled to vote generally in the election of directors, voting together as a single class.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In
addition, as a Delaware corporation, we are subject to Delaware law, including Section 203 of the Delaware General Corporation Law. In general, Section 203 prohibits a Delaware corporation from engaging in any business combination with any
interested stockholder for a period of three years following the date that the stockholder became an interested stockholder unless certain specific requirements are met as set forth in Section 203. These provisions, alone or together, could
have the effect of deterring or delaying changes in incumbent management, proxy contests or changes in control.

These
provisions also could discourage proxy contests and make it more difficult for you and other stockholders to elect directors and take other corporate actions. The existence of these provisions could limit the price that investors might be willing to
pay in the future for shares of our common stock. Some provisions in our certificate of incorporation and bylaws may deter third parties from acquiring us, which may limit the market price of our common stock.

We have not paid dividends in the past and do not expect to pay dividends in the future, and any return on investment may be limited to the value
of our common stock.

We have never paid dividends on our common stock and do not anticipate paying dividends on our
common stock in the foreseeable future. The payment of dividends on our common stock will depend on our earnings, financial condition and other business and economic factors affecting us at such time as our board of directors may consider relevant.
Our credit agreement also restricts our ability to pay dividends. If we do not pay dividends, our common stock may be less valuable because a return on your investment will only occur if our stock price appreciates.



|ITEM 1B. | UNRESOLVED STAFF COMMENTS
|-------- | -------------------------

Not applicable.



|ITEM 2. | PROPERTIES
|------- | ----------

We lease approximately 28,388 square feet of lab and office space in St. Paul, Minnesota. The lease agreement began October 1, 2008 and ends September 30, 2015.



|ITEM 3. | LEGAL PROCEEDINGS
|------- | -----------------

We are not currently a party to any litigation and we are not aware of any pending or threatened litigation against us that could have a material adverse effect on our business, operating results or
financial condition. The medical device industry in which we operate is characterized by frequent claims and litigation, including claims regarding patent and other intellectual property rights as well as improper hiring practices. As a result, we
may be involved in various legal proceedings from time to time.



|ITEM 4. | RESERVED
|------- | --------



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PART II.



|ITEM 5. | MARKET FOR REGISTRANTS COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES
|------- | ------------------------------------------------------------------------------------------------------------

Market For Our Common Stock

Our common stock has been traded on the NASDAQ Stock Market under the symbol ETRM since our initial public offering (IPO) on November 15, 2007. Prior to that date, there was no public
market for our common stock. Our stock was traded on the NASDAQ Global Market from its initial listing at the time of our IPO until January 21, 2010. Subsequently, in anticipation of not curing our deficiencies with the continued listing
requirements of the NASDAQ Global Market, we requested and were approved to transfer to the NASDAQ Capital Market, effective January 22, 2010.

As of February 28, 2011, there were approximately 75 holders of record of our common stock and 27,892,388 shares of common stock outstanding. No dividends have been paid on our common stock to
date, and we do not anticipate paying any dividends in the foreseeable future.

The following table sets forth the high and
low sales prices of our common stock as quoted on the NASDAQ Stock Market for the periods indicated. These prices have been adjusted to reflect the 1-for-6 reverse split of our common stock that was effected on July 9, 2010.

Price Range of Common Stock



|               |  |             |       |  |     |   |       | 
|-------------- |  | ----------- | ----- |  | --- | - | ----- | 
|               |  | Price Range |      
|               |  | High        |       |  | Low |  
|Fiscal 2009    |  |             |       |  |     |   |       | 
|First Quarter  |  | $           | 32.28 |  |     | $ | 6.60  | 
|Second Quarter |  | $           | 26.22 |  |     | $ | 7.50  | 
|Third Quarter  |  | $           | 33.48 |  |     | $ | 16.08 | 
|Fourth Quarter |  | $           | 29.40 |  |     | $ | 2.40  | 
|Fiscal 2010    |  |             |       |  |     |   |       | 
|First Quarter  |  | $           | 8.64  |  |     | $ | 3.06  | 
|Second Quarter |  | $           | 4.86  |  |     | $ | 1.62  | 
|Third Quarter  |  | $           | 2.94  |  |     | $ | 1.52  | 
|Fourth Quarter |  | $           | 3.37  |  |     | $ | 1.63  | 

The closing price for
our common stock as reported by the NASDAQ Capital Market on February 28, 2011 was $2.79 per share.

Securities Authorized for
Issuance Under Equity Compensation Plans

The information required by this Item regarding equity compensation plans is
incorporated by reference to the information set forth in PART III, Item 12 of this Annual Report on Form 10-K.

Unregistered Sales of
Equity Securities

From January 1, 2010 through December 31, 2010, we sold and issued the following unregistered
securities. Also included is the consideration, if any, received by us for such shares, warrants, promissory notes and options and information relating to the section of the Securities Act of 1933, as amended (the Securities Act), or rules of the
SEC, under which exemption from registration was claimed.

As previously described in our Current Report on Form 8-K filed
November 24, 2008, on November 18, 2008, we entered into a new loan and security agreement with Silicon Valley Bank (SVB), Venture Lending &



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Leasing V, Inc. (a private equity fund under the management of Western Technology Investment (WTI)) and Compass Horizon Funding Company LLC (Horizon and, collectively with SVB and WTI, the
Lenders), pursuant to which the Lenders agreed to make term loans (each, a Term Loan) to the Company in an aggregate principal amount of up to $20.0 million, on the terms and conditions set forth in the loan agreement. On April 28, 2009,
Horizon funded a Term Loan in the aggregate principal amount of $5.0 million. In conjunction with the funding, Horizon received a warrant to purchase an aggregate number of shares equal to $495,000 divided by the per share exercise price of the
warrant, or 49,460 common stock warrants with an exercise price of $10.01 per share and a ten year life. The warrants give Horizon the option to purchase either (i) shares of our common stock with a per share exercise price equal to $10.01, or
(ii) shares of our stock (including common stock) issued in an equity financing that occurs after the warrant issue date and on or before May 18, 2010 at the per share price of the stock sold in the financing. The warrants are in the form
attached as Exhibit 10.20 to our Annual Report on Form 10-K filed March 12, 2009. Pursuant to the terms of the warrant agreement, the number of shares issued to Horizon and the exercise price of the warrant were adjusted in connection with the
closing of our private placement in February 2009, our registered direct offering in October 2009 and our registered direct offering in January 2010. See Note 6 to our consolidated financial statements included in Item 8 of this Annual
Report on Form 10-K.

As previously described in our Current Report on Form 8-K filed July 13, 2010, on July 8,
2010, we entered into a second amendment to our loan agreement with Silicon Valley Bank. As required by the second amendment, on July 8, 2010 we issued a warrant to Silicon Valley Bank to purchase 150,642 shares of our common stock with an
exercise price of $2.10 per share and a ten year life. See Note 6 to our consolidated financial statements included in Item 8 of this Annual Report on Form 10-K.

As previously described in our Current Report on Form 8-K filed October 5, 2010, on September 30, 2010, we completed the sale of 3,394,309 shares of Series A Non-Voting Convertible Preferred
Stock (the Preferred Stock), together with warrants to purchase an aggregate of 3,394,309 shares of common stock (the Up Front Warrants) in a private placement transaction to certain accredited investors for gross proceeds of approximately $6.3
million before deducting offering expenses (the Private Placement). Each holder of Preferred Stock has the rights, preferences and duties set forth in the Certificate of Designations authorized by our board of directors and filed with the Secretary
of State of the State of Delaware on September 29, 2010. The Preferred Stock has a par value of $0.01 per share and the board of directors authorized an amount up to 3,600,000 shares. Each share of Preferred Stock has an original issue price of
$1.72. As of the closing of the Private Placement, we had 19 stockholders of record of the Preferred Stock. On December 14, 2010, immediately following the completion of a public offering, all of the Preferred Stock automatically converted on a
1:1 basis into 3,394,309 shares of common stock in accordance with its terms. See Note 7 to our consolidated financial statements included in Item 8 of this Annual Report on Form 10-K.

As previously described in our Current Report on Form 8-K filed December 14, 2010, on December 14, 2010, pursuant to the terms
of the Underwriting Agreement, dated December 8, 2010, with Craig-Hallum Capital Group LLC (the Underwriter), we issued a warrant to purchase 340,400 shares of our common stock at an exercise price of $2.19 per share to the Underwriter (the
Underwriter Warrant). The Underwriter purchased the Underwriter Warrant from us for $100 as partial compensation for its services as underwriter to us in connection with our public offering of 17,020,000 shares of common stock together with warrants
to purchase 17,020,000 shares of common stock (the Offering), registered on our Registration Statements on Form S-1, as amended (File Nos. 333-170503 and 333-171052) (the Registration Statement). The Offering, including the exercise of the
Underwriters over-allotment option, which was previously disclosed on our Current Report on Form 8-K filed on December 10, 2010, closed on December 14, 2010. The Underwriter Warrant will become exercisable 181 days from the date of
issuance on December 14, 2010 and the exercise period will end five years from December 8, 2010, the date of effectiveness of the Registration Statement. The Underwriter Warrant does not allow for cashless exercise. The Underwriter Warrant
is in the form attached as Exhibit 10.1 to our Current Report on Form 8-K filed on December 14, 2010. See Note 7 to our consolidated financial statements included in Item 8 of this Annual Report on Form 10-K.



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The sales and issuances of securities described in the paragraphs above were deemed to be
exempt from registration under the Securities Act by virtue of Section 4(2) of the Securities Act, as transactions by an issuer not involving any public offering.

Uses of Proceeds from Sale of Registered Securities

None.

Dividend Policy

We have
never paid cash dividends on our common stock. The board of directors presently intends to retain all earnings for use in our business and does not anticipate paying cash dividends in the foreseeable future. We do not have a dividend reinvestment
plan or a direct stock purchase plan.

Issuer Purchases of Equity Securities

None.



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Stock Performance Graph

The following performance graph and related information shall not be deemed soliciting material or to be filed with the SEC, nor shall such information be incorporated by
reference into any future filing under the Securities Act or Securities Exchange Act of 1934, each as amended, except to the extent that we specifically incorporate it by reference into such filing.

The following graph shows a comparison of cumulative total return for our common stock, the NASDAQ Composite Index, and the NASDAQ
Medical Equipment Index. Such returns are based on historical results and are not intended to suggest future performance. The graph assumes $100 was invested in our common stock and in each of the indexes on November 15, 2007 (the date our
common stock commenced trading on the NASDAQ Stock Market).

Data for the NASDAQ Composite Index and the NASDAQ Medical
Equipment Index assume reinvestment of dividends. The Company has never paid dividends on its common stock and has no present plans to do so.

The stockholder return shown on the graph below is not necessarily indicative of future performance, and we do not make or endorse any predictions as to future stockholder returns.

COMPARISON OF 37 MONTH CUMULATIVE TOTAL RETURN*

Among EnteroMedics Inc., the NASDAQ Composite Index

and the NASDAQ Medical
Equipment Index

LOGO

* $100 invested on 11/15/07 in stock or 10/31/07 in index, including reinvestment of dividends. No
dividends have been declared or paid on our common stock. Stock performance shown in the above chart for the common stock is historical and should not be considered indicative of future price performance. This graph was prepared by Research Data
Group, Inc.



|                         |  |                  |        |  |                  |   |        |                  |  |   |                  |  |  |                  |       |  |  |   |       | 
|------------------------ |  | ---------------- | ------ |  | ---------------- | - | ------ | ---------------- |  | - | ---------------- |  |  | ---------------- | ----- |  |  | - | ----- | 
|                         |  | November 15,2007 |        |  | December 31,2007 |   |        | December 31,2008 |  |   | December 31,2009 |  |  | December 31,2010 |      
|EnteroMedics Inc.        |  | $                | 100.00 |  |                  | $ | 100.63 |                  |  | $ | 18.25            |  |  | $                | 7.00  |  |  | $ | 6.42  | 
|NASDAQ Composite         |  |                  | 100.00 |  |                  |   | 92.69  |                  |  |   | 54.85            |  |  |                  | 79.65 |  |  |   | 93.63 | 
|NASDAQ Medical Equipment |  |                  | 100.00 |  |                  |   | 95.93  |                  |  |   | 50.98            |  |  |                  | 71.60 |  |  |   | 75.51 | 



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|ITEM 6. | SELECTED FINANCIAL DATA
|------- | -----------------------

The following table sets forth certain financial data with respect to our business. The information set forth below is not necessarily indicative of results of future operations and should be read in
conjunction with Managements Discussion and Analysis of Financial Condition and Results of Operations in Item 7 and the consolidated financial statements and related notes thereto in Item 8 of this Annual Report on Form
10-K.



|                                                                   |  |                                       |          |   |         |   |          |         |  |   |            |   |  |         |         |   |  |   |         |  
|------------------------------------------------------------------ |  | ------------------------------------- | -------- | - | ------- | - | -------- | ------- |  | - | ---------- | - |  | ------- | ------- | - |  | - | ------- | -
|                                                                   |  | Fiscal Years                          |         
|                                                                   |  | 2010(1)                               |          |   | 2009(3) |   |          | 2008(3) |  |   | 2007(2)(3) |   |  | 2006(3) |        
|                                                                   |  | (In thousands, except per share data) |         
|Operations:                                                        |  |                                       |          |   |         |   |          |         |  |   |            |   |  |         |         |   |  |   |         |  
|Loss from operations                                               |  | $                                     | (16,177  | ) |         | $ | (24,212  | )       |  | $ | (36,270    | ) |  | $       | (28,026 | ) |  | $ | (18,122 | )
|Net loss                                                           |  |                                       | (17,347  | ) |         |   | (31,929  | )       |  |   | (37,874    | ) |  |         | (28,575 | ) |  |   | (17,690 | )
|Basic and diluted net loss per share                               |  |                                       | (2.06    | ) |         |   | (6.42    | )       |  |   | (13.50     | ) |  |         | (70.12  | ) |  |   | (205.12 | )
|Shares used to compute basic and diluted net loss per share        |  |                                       | 8,420    |   |         |   | 4,974    |         |  |   | 2,806      |   |  |         | 407     |   |  |   | 86      |  
|                                                                   |  |                                       |          |   |        
|Financial Position:                                                |  |                                       |          |   |         |   |          |         |  |   |            |   |  |         |         |   |  |   |         |  
|Cash, cash equivalents, restricted cash and short-term investments |  |                                       | 37,368   |   |         |   | 14,618   |         |  |   | 26,295     |   |  |         | 57,031  |   |  |   | 34,732  |  
|Working capital (current assets less current liabilities)          |  |                                       | 33,807   |   |         |   | 8,821    |         |  |   | 20,916     |   |  |         | 49,802  |   |  |   | 29,921  |  
|Total assets                                                       |  |                                       | 38,687   |   |         |   | 16,214   |         |  |   | 28,279     |   |  |         | 59,051  |   |  |   | 36,064  |  
|Long-term debt, net of current portion and discounts               |  |                                       | 4,983    |   |         |   | 3,881    |         |  |   | 10,996     |   |  |         | 6,018   |   |  |   | 1,727   |  
|Convertible preferred stock                                        |  |                                       |         |   |         |   |         |         |  |   |           |   |  |         |        |   |  |   | 103     |  
|Deficit accumulated during development stage                       |  |                                       | (150,715 | ) |         |   | (133,368 | )       |  |   | (101,307   | ) |  |         | (63,433 | ) |  |   | (34,858 | )
|Total stockholders equity                                         |  |                                       | 29,707   |   |         |   | 5,581    |         |  |   | 11,405     |   |  |         | 45,282  |   |  |   | 28,574  |  



|(1) | Basic and diluted net loss per share and shares used to compute basic and diluted net loss per share include the impact of converting 3,394,309 shares of convertible
preferred stock into common stock immediately following the closing of our public offering on December 14, 2010.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Basic and diluted net loss per share and shares used to compute basic and diluted net loss per share include the impact of converting 1,748,030 shares of convertible
preferred stock into common stock immediately prior to the closing of our initial public offering on November 20, 2007.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Basic and diluted net loss per share and shares used to compute basic and diluted net loss per share have been adjusted to reflect the 1-for-6 reverse split of our
common stock that was effected on July 9, 2010.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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|ITEM 7. | MANAGEMENTS DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
|------- | -------------------------------------------------------------------------------------

Except for the historical information contained herein, the matters discussed in this Managements Discussion and Analysis
of Financial Condition and Results of Operations, and elsewhere in this Form 10-K are forward-looking statements that involve risks and uncertainties. The factors listed in Item 1A Risk Factors, as well as any cautionary
language in this Form 10-K, provide examples of risks, uncertainties and events that may cause our actual results to differ materially from those projected. Except as may be required by law, we undertake no obligation to update any
forward-looking statement to reflect events after the date of this report.

Overview

We are a development stage medical device company focused on the design and development of devices that use neuroblocking technology to
treat obesity, its associated co-morbidities, and other gastrointestinal disorders. Our proprietary neuroblocking technology, which we refer to as VBLOC therapy, is designed to intermittently block the vagus nerve using high frequency, low
energy, electrical impulses. We have a limited operating history and we currently have no products approved for sale. Our initial product under development is the Maestro System, which uses VBLOC therapy to limit the expansion of the stomach, help
control hunger sensations between meals, reduce the frequency and intensity of stomach contractions and produce a feeling of early and prolonged fullness. We were formerly known as Beta Medical, Inc. and were incorporated in Minnesota on
December 19, 2002. We later reincorporated in Delaware on July 22, 2004. Since inception, we have devoted substantially all of our resources to the development and commercialization of our Maestro System.

Based on our understanding of vagal nerve function and nerve blocking from our preclinical studies and the results of our initial
clinical trials, we believe the Maestro System may offer obese patients a minimally-invasive treatment alternative that has the potential to result in significant and sustained weight loss. We believe that our Maestro System will allow bariatric
surgeons to help obese patients who are concerned about the risks and complications associated with gastric banding and gastric bypass surgery. In addition, data from sub-group analyses demonstrate that VBLOC therapy may hold promise in improving
the obesity-related co-morbidities of diabetes and hypertension. We are conducting, or plan to conduct, feasibility studies in each of these co-morbidities to assess VBLOC therapys potential in addressing multiple indications.

We are currently evaluating the Maestro System in human clinical trials conducted in the United States, Australia, Mexico, Norway and
Switzerland. To date, we have not observed any mortality related to our device or any unanticipated adverse device effects in these clinical trials. We have also not observed any long-term problematic clinical side effects in any patients, including
in those patients who have been using the Maestro System for more than one year.

On October 2, 2009, we announced
preliminary results from our first pivotal clinical study, the EMPOWER trial, a multi-center, randomized, double-blind, prospective, placebo-controlled pivotal study being conducted in the United States and selected international centers. Initial
results from the trial indicated that the study did not meet its primary and secondary efficacy endpoints in that the weight loss for the treatment arm was not statistically different from the control arm in which therapy was turned off. The study
did meet its safety endpoint. Our further review of the data suggests that: (i) patients that used the device for the prescribed amount of time (39 hours) had clinically meaningful weight-loss;
(ii) both the treatment and control arm subjects experienced comparable, significant, dose-dependent EWL at 12 months; and (iii) there was an unanticipated therapeutic effect in which a low-intensity blocking signal introduced VBLOC
therapy in human subjects in the control group. In January 2010, we met with the U.S. Food and Drug Administration (FDA) to discuss the EMPOWER trial results and the regulatory process going forward. Based on this discussion, in March we submitted
an Investigational Device Exemption (IDE) for a pivotal trial of our second generation fully implantable Maestro Rechargeable (RC) System. In October 2010, we received an unconditional approval from the FDA for this trial, the ReCharge trial, a
randomized, double-blind, parallel-group, multicenter pivotal clinical trial in 234 morbidly obese subjects enrolled at up to 12 U.S. centers. All patients in the study will receive an



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implanted device and will be randomized in a 2:1 allocation to treatment or control groups. The control group will receive a functional, but non-active device that will deliver no charge to the
vagus nerve during the study period. All patients are expected to participate in a weight management program.

We will begin
enrolling and implanting patients in the ReCharge trial and target the final implant to take place around the end of 2011 at the earliest. Assuming that we successfully enroll and implant the trial and achieve favorable results, we plan to use data
from that trial to support a premarket approval (PMA) application for the Maestro System, which we expect to submit no earlier than the fourth quarter of 2012. We anticipate that we will be able to commercialize the Maestro System in the United
States in late 2013 at the earliest.

We have begun to take the initial steps necessary to commercialize the Maestro RC System
in Australia, which includes applying for European CE Mark certification and Australian Therapeutic Goods Administration (TGA) approval. We have applied for European CE Mark certification of the Maestro RC System and hope to receive approval in the
first quarter of 2011. Once we receive European CE Mark certification, we intend to use that approval to file an application for approval and listing of the Maestro RC System with the TGA and intend to commercialize the device following receipt of
that approval during the second half of 2011.

On October 21, 2010, we announced that we entered into a cooperation
agreement with the Australian Institute of Weight Control (AIWC), a network of bariatric clinics specializing in laparoscopic weight loss surgery and clinical research for the morbidly obese. Under the cooperation agreement, we have designated AIWC
and AIWC member clinics as authorized training and implantation centers for our products. AIWC will be the first clinics in Australia to implant the Maestro System when it has received approval by the TGA. The AIWC will work with us to provide
research, communications, training and accreditation support related to the Maestro RC System in Australia and other international territories. In addition, the AIWC will work with us toward TGA approval of the Maestro RC System and collaborate on
subsequent marketing and distribution efforts in Australia. The AIWC will also support our efforts in gaining reimbursement for the private sector through the Medical Services Advisory Committee (MSAC) in Australia.

We received European CE Mark approval for our Maestro RF System on March 4, 2009, and as discussed above, are in the process of
applying for European CE Mark approval for our Maestro RC System. The method of assessing conformity with applicable regulatory requirements varies depending on the class of the device, but for our Maestro System (which falls into Class III), the
method involved a combination of self-assessment by the manufacturer of the safety and performance of the device, and a third-party assessment by a Notified Body, usually of the design of the device and of the manufacturers quality system. We
use DEKRA Certification Inc. (formerly known as KEMA Quality) in the Netherlands as the Notified Body for our CE marking approval process.

If and when we obtain FDA approval of our Maestro System we intend to market our products in the United States through a direct sales force supported by field technical and marketing managers who provide
training, technical and other support services to our customers. Outside the United States we intend to use direct, dealer and distributor sales models as the targeted geography best dictates. To date, we have relied on third-party manufacturers and
suppliers for the production of our Maestro System. We currently anticipate that we will continue to rely on third-party manufacturers and suppliers for the production of the Maestro System.

To date, we have generated no revenue from the sale of products, and we have incurred net losses in each year since our inception. As of
December 31, 2010, we had experienced net losses during the development stage of $150.6 million. We expect our losses to continue as we continue our development activities. We have financed our operations to date principally through the
sale of capital stock, debt financing and interest earned on investments.

Our board of directors and stockholders approved a
1-for-6 reverse split of our outstanding common stock that became effective on July 9, 2010. The reverse stock split did not change the par value of our stock or the



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number of common and preferred shares authorized by our Fifth Amended and Restated Certificate of Incorporation. All share and per share amounts have been retroactively adjusted to reflect the
stock split for all periods presented.

Critical Accounting Policies and Significant Judgments and Estimates

Our managements discussion and analysis of our financial condition and results of operations are based on our consolidated financial
statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of
assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported expenses during the reporting periods. We evaluate our estimates and judgments on an ongoing basis. Actual
results may differ materially from these estimates under different assumptions or conditions.

While our significant
accounting policies are more fully described in Note 2 to our consolidated financial statements included in Item 8 of this Annual Report on Form 10-K, we believe that the following accounting policies and estimates are most critical to a full
understanding and evaluation of our reported financial results.

Stock-Based Compensation

Prior to January 1, 2006, we accounted for stock-based employee compensation arrangements using the intrinsic value method and
recognizing the expense over the option vesting period. The intrinsic value method is calculated as the difference, if any, between the fair value of our common stock and the exercise price on the date of the grant. We also followed the minimum
value disclosure provisions. Using the intrinsic value method, we were not required to recognize stock-based compensation expense for employee stock options granted from inception through 2005 as the exercise prices, for financial reporting
purposes, were determined to be at or above the deemed fair value of the underlying common stock on the date of grant. The fair value of our common stock was assessed and approved by our board of directors, the members of which have extensive
experience in the life sciences industry and all but one of whom are nonemployee directors. In determining the appropriateness of the fair value of our common stock, the board of directors considered several factors, such as our life cycle, results
of research and development, recent financings and financial projections.

Effective January 1, 2006, we adopted the fair
value method of accounting for share-based payments, which superseded the previous accounting method, and requires compensation expense to be recognized using a fair-value-based method for costs related to all share-based payments including stock
options. Companies are required to estimate the fair value of share-based payment awards on the date of grant using an option-pricing model. We adopted the new provisions using the prospective transition method. Under this method, compensation cost
is recognized for all share-based payments granted or modified subsequent to December 31, 2005. All option grants valued after January 1, 2006 are expensed on a straight-line basis over the vesting period.

Calculating stock-based compensation expense requires the input of highly subjective assumptions, which represent our best estimates and
involve inherent uncertainties and the application of managements judgment. Estimates of stock-based compensation expenses are significant to our consolidated financial statements, but these expenses are based on the Black-Scholes pricing
model and will never result in the payment of cash by us.

The application of share-based payment principles may be subject to
further interpretation and refinement over time. There are significant differences among option valuation models, and this may result in a lack of comparability with other companies that use different models, methods and assumptions. If factors
change and we employ different assumptions in the application of share-based payment accounting in future periods, or if we decide to use a different valuation model, the compensation expense that we record in the future may differ significantly
from what we have recorded in the current period and could materially affect our operating loss, net loss and net loss per share.



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The fair value method is applied to all share-based payment awards issued to employees and
where appropriate, nonemployees, unless another source of literature applies. When determining the measurement date of a nonemployees share-based payment award, the Company measures the stock options at fair value and remeasures such stock
options to the current fair value until the performance date has been reached. For stock options granted to nonemployees, the fair value of the stock options is estimated using the Black-Scholes valuation model. This model utilizes the estimated
fair value of common stock and requires that, at the date of grant and each subsequent reporting period until the services are completed or a significant disincentive for nonperformance occurs, we make assumptions with respect to the expected term
of the option, the volatility of the fair value of our common stock, risk free interest rates and expected dividend yields of our common stock. Different estimates of volatility and expected life of the option could materially change the value of an
option and the resulting expense.

Common Stock Warrant Liability

Effective January 1, 2009, we adopted new authoritative accounting guidance regarding the financial reporting for outstanding
equity-linked financial instruments. This adoption required certain warrants issued by us to be recorded as a liability and recorded at fair value. Calculating the fair value of the warrant liability requires the input of highly subjective
assumptions, which requires our best estimates, and involves inherent uncertainties and the application of managements judgment. The common stock warrant liability and related changes in fair value are significant to our consolidated financial
statements and is based on a weighted-average Black-Scholes valuation model, however the warrant liability will never result in the payment of cash by us.

Net Operating Losses and Tax Credit Carryforwards

At
December 31, 2010, we had federal and state net operating loss carryforwards of approximately $53.3 million and $51.7 million, respectively. These net operating loss carryforwards will expire in varying amounts from 2022 through 2030, if
not utilized. Under the provisions of Sections 382 and 383 of the Internal Revenue Code, substantial changes in our ownership will limit the amount of net operating loss carryforwards and certain tax credits that can be utilized annually in the
future to offset taxable income. The Company is currently conducting a review of its ownership changes under Section 382. The results of this review indicate that ownership changes have occurred. The Companys gross net operating loss
carryforwards, research and development credits, capitalized start up costs and capitalized research costs, totaling approximately $136.0 million as of December 31, 2010, will be subject to a limitation. The Section 382 limitation and
accompanying recognized built-in loss limitation is currently estimated to result in the expiration of between $82.0 million and $102.0 million of the Companys aforementioned gross tax attributes. A valuation allowance has been established to
reserve the potential benefits of these carryforwards and tax credits in our consolidated financial statements to reflect the uncertainty of future taxable income required to utilize available tax loss carryforwards and other deferred tax assets.

Financial Overview

Revenue

To date, we have not commercialized any products and we
have not generated any revenue. We are taking the necessary steps to commercialize the Maestro RC System in Australia which includes the filing of an application for approval and listing with the TGA upon receipt of European CE Mark certification
for the Maestro RC System. We hope to receive TGA approval during the second half of 2011. In October 2010 we received unconditional approval from the FDA of our IDE to complete a pivotal trial using the Maestro RC System. As such, we do not expect
to generate revenue in the United States before late 2013 and then, only if we successfully enroll and implant the clinical trial, achieve favorable results and receive FDA approval of our Maestro System. Any revenue from initial sales of a new
product in the United States or internationally is difficult to predict and in any event will only modestly reduce our continued losses resulting from our research and development and other activities.



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Research and Development Expenses

Our research and development expenses primarily consist of engineering, product development and clinical and regulatory expenses, incurred
in the development of our Maestro System. Research and development expenses also include employee compensation, including stock-based compensation, consulting services, outside services, materials, supplies, depreciation and travel. We expense
research and development costs as they are incurred. From inception through December 31, 2010, we have incurred a total of $100.1 million in research and development expenses. We expect research and development expense to increase in 2011
in support of a new clinical trial, ReCharge, in addition to continued follow-up on existing trials, such as VBLOC-DM2 ENABLE and EMPOWER.

Selling, General and Administrative Expenses

Our selling, general
and administrative expenses consist primarily of compensation for executive, finance, market development and administrative personnel, including stock-based compensation. Other significant expenses include costs associated with attending medical
conferences, professional fees for legal, including legal services associated with our efforts to obtain and maintain broad protection for the intellectual property related to our products, and accounting services, cash management fees, consulting
fees and travel expenses. From inception through December 31, 2010, we have incurred $39.6 million in selling, general and administrative expenses.

Results of Operations

Comparison of the Years Ended
December 31, 2010 and 2009

Research and Development Expenses.    Research and
development expenses were $8.5 million for the year ended December 31, 2010, compared to $15.6 million for the year ended December 31, 2009. The decrease of $7.1 million, or 45.5%, is primarily due to decreases of $3.7 million, $2.2
million, $439,000 and $435,000 in professional services, compensation and benefits expense, device costs and travel, respectively. The ongoing financial commitment to maintain the EMPOWER trial continues to decrease as prescribed patient follow-up
visits become further apart, which has led to decreases in both professional services and device costs. The reduction in compensation and benefits expenses along with the reduction in travel expense is primarily the result of a 40%
reduction-in-force completed October 27, 2009. Research and development expenses further decreased for the year ended December 31, 2010 as a result of applying for and receiving a $244,000 government grant under the Therapeutic Discovery
Project Credit program, which was a program established by the Healthcare Reform Law enacted March 23, 2010. The program allowed applicants the opportunity to receive a tax credit or a grant for the equivalent amount.

Selling, General and Administrative Expenses.Selling, general and administrative expenses were $7.7
million for the year ended December 31, 2010, compared to $8.6 million for the year ended December 31, 2009. The decrease of $953,000, or 11.0%, is primarily due to decreases of $512,000 and $278,000 in compensation and benefits expense
and professional services, respectively. The decrease in compensation and benefits expense is primarily the result of a 40% reduction-in-force completed October 27, 2009. The decrease in professional services includes a decrease of $406,000 in
consulting costs offset by an increase of $212,000 in audit and legal fees.

Interest
Income.    Interest income was $6,000 for the year ended December 31, 2010, compared to $79,000 for the year ended December 31, 2009. The decrease of $74,000, or 92.9%, is primarily due to a focus on capital
preservation during 2010 while we developed our regulatory strategy and explored financing opportunities.

Interest
Expense.    Interest expense was $1.3 million for the year ended December 31, 2010, compared to $4.1 million for the year ended December 31, 2009. The decrease of $2.8 million, or 69.3%, was the result of
voluntarily prepaying two of the outstanding term loans in full, or approximately 50% of the outstanding principal balance, on December 1, 2009. The prepayment of the term loans resulted in a final payment fee of $500,000 and the acceleration
of $602,000 of unamortized discount on notes payable, both recorded as interest expense in 2009.



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Change in Value of Warrant Liability.    The value of the warrant
liability decreased $159,000 for the year ended December 31, 2010, compared to an increase of $3.6 million for the year ended December 31, 2009. For the year ended December 31, 2009 the warrant liability consisted of warrants issued
to SVB, WTI and Horizon. Both SVB and WTI exercised their warrants in full in September and October 2009, respectively. As a result, only warrants issued to Horizon remained outstanding during the year ended December 31, 2010. The fair market
value of the remaining 141,025 warrants, with a weighted-average exercise price of $3.90, was $313,000 as of May 18, 2010, the date on which the warrants down round protection expired and the warrant liability was reclassified to equity.
The fair market value for these remaining warrants was calculated using the Black-Scholes valuation model, which resulted in a $159,000 decrease for the year ended December 31, 2010 as our stock price decreased from $3.36 on December 31,
2009 to $2.46 on May 18, 2010.

Comparison of the Years Ended December 31, 2009 and 2008

Research and Development Expenses.    Research and development expenses were $15.6 million for the year ended
December 31, 2009, compared to $27.7 million for the year ended December 31, 2008. The decrease of $12.1 million, or 43.7%, is primarily due to decreases of $7.7 million, $2.2 million and $1.5 million in professional services, device costs
and compensation and benefits expense, respectively. Professional services and device cost decreases are driven by the completion of enrollment and implants in our EMPOWER trial during 2008. We are currently incurring costs related to follow-up
visits, which are less expensive than the cost of the implantation procedure, and do not require us to incur new device costs. The reduction in compensation and benefits expense is the result of a reduction-in-force completed December 1, 2008
and a 40% reduction-in-force completed October 27, 2009.

Selling, General and Administrative
Expenses.Selling, general and administrative expenses were $8.6 million for the years ended December 31, 2009 and 2008. Although total annual selling, general and administrative expenses were consistent, various
components fluctuated year-over-year. There were increases of $259,000 and $219,000 in compensation and benefits expense and professional services, respectively. The increases were driven by limited activities in support of commercializing the
Maestro System in the event our EMPOWER trial met its primary and secondary efficacy endpoints and the FDA granted us approval to market our Maestro System. These limited activities were put on hold when we determined that our EMPOWER trial failed
to meet the primary and secondary efficacy endpoints. The increases were offset by decreases of $331,000 and $104,000 in employee stock-based compensation expense and reduced travel expense, respectively. The decrease in employee stock-based
compensation expense is primarily the result of the cancellation and related forfeiture of several stock options granted in 2008 with milestone features that were not achieved in 2009.

Interest Income.    Interest income was $79,000 for the year ended December 31, 2009, compared to $1.1
million for the year ended December 31, 2008. The decrease of $1.0 million, or 92.8%, is primarily due to a decrease in short-term interest rates and a reduction in total cash available to invest. The average cash, cash equivalents and
short-term investments balance was $30.1 million and $39.2 million for the years ended December 31, 2009 and 2008, respectively. The decreased average cash, cash equivalents and short-term investments balance is the result of $50.5 million in
net cash used in operating and investing activities from January 1, 2008 through December 31, 2009 together with $23.5 million in debt principal payments during the same time period, offset by $15.0 million of debt funding received in
November 2008, $15.1 million of net private placement proceeds received February 24, 2009, $5.0 million of additional debt funding received in April 2009 and $4.8 million of net registered direct offering proceeds received October 7, 2009.

Interest Expense.    Interest expense was $4.1 million for the year ended December 31, 2009,
compared to $2.7 million for the year ended December 31, 2008. The increase of $1.4 million, or 52.9%, was primarily the result of entering into a $20.0 million debt facility, of which $15.0 million was funded in November 2008 that resulted in
net proceeds of $7.1 million after transaction expenses, facility charges and existing debt pay off and the funding of the remaining $5.0 million in April 2009. The effective rates on the $15.0 million and $5.0 million debt fundings were
approximately 19% and 22%, respectively, compared to the old debt facility containing several outstanding loans with effective interest rates primarily ranging from approximately 15% to 17%. On December 1, 2009 we



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voluntarily prepaid two of the outstanding term loans in full, or approximately 50% of the outstanding principal balance. The prepayment of the term loans resulted in a final payment fee of
$500,000 and the acceleration of $602,000 of unamortized discount on notes payable, both recorded as interest expense in 2009.

Change in Value of Warrant Liability.    The change in value of warrant liability was $3.6 million for the
year ended December 31, 2009, compared to zero for the year ended December 31, 2008. This is the result of a change in accounting principle effective January 1, 2009, which resulted in warrants issued November 2008 with a recorded
value of $1.4 million on December 31, 2008 being reclassified from equity to a liability. On September 29, 2009, SVB completed a cashless exercise of 159,420 common stock warrants with an exercise price of $6.90 per share. The related
warrant liability was marked-to-market on the date of exercise and reclassified to equity. The change in fair value of these warrants from January 1, 2009 to the date of exercise was $3.8 million. On October 2, 2009, WTI completed a
cashless exercise of 79,710 common stock warrants with an exercise price of $6.90 per share. The related warrant liability was marked-to-market on the date of exercise and reclassified to equity. The change in fair value of these warrants from
January 1, 2009 to the date of exercise was $1,000. The fair market value of the remaining 114,583 warrants, with a weighted-average exercise price of $4.80, was $472,000 as of December 31, 2009. The fair market value for these remaining
awards was calculated using the Black-Scholes valuation model, which resulted in a $120,000 decrease for the year ended December 31, 2009. The decrease was primarily the result of our stock price decreasing from a closing price of $8.76 on
January 1, 2009 to $3.36 on December 31, 2009.

Liquidity and Capital Resources

We have incurred losses since our inception in December 2002 and, as of December 31, 2010 we had experienced net losses during the
development stage of $150.6 million. We have financed our operations to date principally through the sale of capital stock, debt financing and interest earned on investments. Through December 31, 2009, we had received net proceeds of
$122.2 million from the sale of common stock and preferred stock, including $39.1 million from our initial public offering in November 2007 and $19.9 million from private placement and registered direct offerings in 2009, and $35.8 million
in debt financing, $746,000 to finance equipment purchases and $35.0 million to finance working capital. On January 20, 2010, we completed the sale of 1,239,717 shares of our common stock in a registered direct offering, at a purchase
price of $3.90 per share. We received gross proceeds of $4.8 million before deducting offering expenses. On September 30, 2010, we completed the sale of 3,394,309 shares of Series A non-voting convertible preferred stock, together with warrants
to purchase an aggregate of 3,394,309 shares of common stock with an exercise price of $2.15 per share in a private placement transaction at a purchase price of $1.72 per share and $0.125 per share, respectively. We received gross proceeds of $6.3
million before deducting offering expenses. On December 14, 2010, we completed the sale of 17,020,000 shares of common stock, together with warrants to purchase an aggregate of 17,020,000 shares of common stock with an exercise price of $2.19
per share in a public offering at a purchase price of $1.75 per share and corresponding warrant. We received gross proceeds of $29.8 million before deducting offering expenses.

As of December 31, 2010, we had $37.4 million in cash, cash equivalents and restricted cash. Of this amount $23.3 million was
invested in money market funds that are not considered to be bank deposits and are not insured or guaranteed by the federal deposit insurance company or other government agency and $6.5 million was invested in restricted cash collateral money market
accounts as required by the terms of our debt and lease agreements. These money market funds seek to preserve the value of the investment at $1.00 per share; however, it is possible to lose money investing in these funds. Cash in excess of immediate
requirements is invested in accordance with our investment policy, primarily with a view to liquidity and capital preservation. At times, such deposits may be in excess of insured limits. We have not experienced any losses on our deposits of cash
and cash equivalents. We believe that the cash, cash equivalents and restricted cash balance as of December 31, 2010, together with any interest income we earn on these balances, will be sufficient to meet our anticipated cash requirements
through 2012, assuming our planned commercialization and we do not receive any other additional funds.



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As of December 31, 2009, we had repaid the outstanding principal amount due to Venture
Lending & Leasing V, Inc. (a private equity fund under the management of WTI) and Horizon pursuant to the Loan and Security Agreement, effective as of November 18, 2008 (the Loan Agreement). The remaining unpaid balance of $6.3 million
in debt financing as of December 31, 2010 owed to SVB pursuant to the Loan Agreement is collateralized by a first security priority lien on all of our assets, excluding intellectual property. We have entered into account control agreements in
order to perfect the lenders first security interest in our cash and investment accounts.

On February 8, 2010 we
entered into a First Amendment (the Amendment) with SVB to the Loan Agreement. The Amendment provided that SVBs term loan shall be repaid with a payment of $383,532 on February 1, 2010 followed by consecutive equal monthly payments of
$380,421 each, commencing on March 1, 2010 and ending on December 1, 2011. It also amended the interest rate due on the remaining principal amount of the term loan from 11.0% to a fixed annual rate of 10.0%, payable monthly. Pursuant to
the Amendment, the conditions pursuant to which the Excluded Collateral (as defined in the Loan Agreement) will be deemed to be included as Collateral (as defined in the Loan Agreement) were changed from the failure to have five months of remaining
liquidity to the occurrence of an Event of Default (as defined in the Loan Agreement) after the date of the Amendment or the lenders awareness after such date of an Event of Default that occurred on or before such date with written notice of
such event delivered to the Company. In addition, the Amendment revised the financial covenants in the Loan Agreement to delete the covenant relating to five months of remaining liquidity and to change the liquidity ratio covenant to equal a ratio
of (i) the sum of our unrestricted cash and cash equivalents held with SVB and SVBs affiliates, divided by (ii) the outstanding principal amount of the term loan, which is not permitted to be less than 1.50:1.00. Finally, the
Amendment added a new covenant, the breach of which would constitute an Event of Default. The new covenant requires that we receive aggregate net proceeds of at least $4.0 million from new capital transactions after January 1, 2010 and before
March 31, 2010 and to keep the proceeds of such transactions at SVB until used. We satisfied this new covenant with the closing, on January 20, 2010, of our sale of 1,239,717 shares of common stock to certain institutional investors in a
registered direct offering for gross proceeds of approximately $4.8 million, before deducting offering expenses.

On
July 8, 2010 we entered into a Second Amendment (the Second Amendment) to the Loan Agreement with SVB. The Second Amendment modified the repayment terms of the Term Loan such that from the date of the Second Amendment through December 31,
2010, we were only required to make interest only monthly payments on the Term Loan, thereby reducing our monthly debt payment. Then, beginning on January 1, 2011, the remaining balance due on the Term Loan will amortize over 30 equal payments
of principal and interest, which will be payable monthly. In addition, the Second Amendment amended the interest rate due on the remaining principal amount of the Term Loan from 10.0% to a fixed annual rate of 11.0%, payable monthly. The Second
Amendment also revised the terms of the financial covenants related to the liquidity ratio and new capital transactions. Pursuant to the Second Amendment, the liquidity ratio equals the ratio of (i) the sum of our unrestricted cash and cash
equivalents held with SVB and SVBs affiliates plus eligible accounts, divided by (ii) the outstanding principal amount of the Term Loan and is not permitted to be less than 1.00:1.00. Pursuant to the Second Amendment, we must receive
aggregate net proceeds from New Capital Transactions (as defined in the Loan Agreement) of not less than $2.0 million from the date of the Second Amendment through August 31, 2010, $7.0 million from the date of the Second Amendment through
October 31, 2010, $15.0 million from the date of the Second Amendment through January 31, 2011 and $35.0 million from the date of the Second Amendment through June 30, 2011. If we meet these financing requirements, we will satisfy the
covenant; however, if we do not receive aggregate net proceeds from New Capital Transactions of at least $3.5 million from the date of the Second Amendment through August 31, 2010, $7.5 million from the date of the Second Amendment through
October 31, 2010, $15.0 million from the date of the Second Amendment through January 31, 2011 and $35.0 million from the date of the Second Amendment through June 30, 2011, SVBs springing lien on our intellectual property will
convert to a full lien on the intellectual property as of the date such Proposed Capital Raise was missed. We received approximately $6.3 million from the sale of preferred stock and common stock warrants in a private placement
transaction that closed on September 30, 2010, which was less than the amount required by the Second Amendment and resulted in us entering into a Third Amendment to the Loan Agreement (the Third Amendment) with SVB on November 4, 2010. See
details of the



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Third Amendment below. Finally, the Second Amendment revised the definition of Make-Whole Premium so that only Term Loan payments of principal made after the date of the Second
Amendment will be counted for purposes of determining whether we have made twelve regularly scheduled monthly payments of principal in accordance with Section 2.1.1(d) of the Loan Agreement when the Make-Whole Premium comes due.

The Second Amendment also required the issuance of a new warrant to SVB with an exercise price per share equal to the volume weighted
average closing price of our publicly traded common stock for the five trading days prior to the date of the Second Amendment. The warrant gives SVB the right to purchase a number of shares of our common stock equal to $316,350 divided by the
exercise price per share. On July 8, 2010, SVB was issued a warrant to purchase 150,642 shares of our common stock with an exercise price of $2.10 per share.

As noted above, we entered into a Third Amendment to the Loan Agreement with SVB on November 4, 2010. The Third Amendment modified the New Capital Transaction covenant such that it waived the
requirements to receive aggregate net proceeds from New Capital Transactions of not less than $3.5 million from the date of the Second Amendment through August 31, 2010 and $7.5 million from the date of the Second Amendment through
October 31, 2010. The Third Amendment also modified the requirement to receive aggregate net proceeds from New Capital Transactions of not less than $15.0 million from the date of the Second Amendment through January 31, 2011 to $12.5
million and eliminated the requirement to receive aggregate net proceeds from New Capital Transactions of not less than $35.0 million from the date of the Second Amendment through June 30, 2011. We satisfied this new covenant with the closing,
on December 14, 2010, of our sale of 17,020,000 shares of common stock, together with warrants to purchase an aggregate of 17,020,000 shares of common stock, in a public offering for gross proceeds of approximately $29.8 million, before
deducting offering expenses. Lastly, the Third Amendment suspended the liquidity ratio covenant, which was not permitted to be less than 1.00:1.00, until January 31, 2011. We have agreed to maintain a blocked cash collateral account with funds
equal to the principal balance outstanding until such time that we have received aggregate net proceeds from New Capital Transactions of not less than $12.5 million from the date of the Second Amendment through January 31, 2011, SVB has
received a financial forecast through December 31, 2012 approved by our board of directors and we have agreed to new financial covenants or a new financial structure with SVB for our obligations. There were no changes to the repayment terms of
the Term Loan as defined in the Second Amendment.

On March 3, 2011 we entered into a Fourth Amendment (the Fourth Amendment)
to the Loan Agreement with SVB. The Fourth Amendment modifies the repayment terms of the Term Loan such that beginning April 1, 2011 through September 30, 2011, we are only required to make interest only monthly payments on the Term Loan.
Then, beginning on October 1, 2011, the remaining balance due on the Term Loan will amortize over 30 equal payments of principal and interest, which will be payable monthly. In addition, the Fourth Amendment amends the interest rate due
effective March 1, 2011 on the remaining principal amount of the Term Loan from 11.0% to a fixed annual rate of 6.25% if the liquidity ratio is greater than 1.50:1.00 and no Event of Default (as defined in the Loan Agreement) has occurred or is
continuing or 9.00% if the liquidity ratio is less than 1.50:1.00 or an Event of Default has occurred or is continuing, payable monthly. The Fourth Amendment also reinstates the financial covenant related to the liquidity ratio, which is not
permitted to be less than 1.00:1.00, and adds an EBITDA test should the liquidity ratio fall below 1.50:1.00. The EBITDA test requires that the trailing 90 day actual EBITDA be more favorable than 110% of the projected EBITDA for the same period if
the projected EBITDA for such period was less than zero or at least 90% of the projected EBITDA for the same period if the projected EBITDA for such period was greater than or equal to zero. In addition, the Fourth Amendment amends the prepayment
terms of the Loan Agreement such that a Make-Whole Premium equal to 1% of the amount of the Term Loan being prepaid will be due for any voluntary or required prepayment of the Term Loan occurring before the first anniversary of the Fourth Amendment,
unless the Term Loan is being voluntary prepaid and replaced with a new SVB facility. Lastly, the Fourth Amendment eliminates SVBs springing lien on our intellectual property, the New Capital Transactions requirement and the requirement of the
Third Amendment to maintain a blocked cash collateral account with funds equal to the principal balance outstanding.



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Net Cash Used in Operating Activities

Net cash used in operating activities was $13.7 million, $24.7 million and $33.7 million for the years ended
December 31, 2010, 2009 and 2008, respectively. Net cash used in operating activities primarily reflects the net loss for those periods, which was partially offset by stock-based compensation, depreciation and amortization, loss on sale of
equipment and changes in operating assets and liabilities.

Net Cash (Used in) Provided by Investing Activities

Net cash used in investing activities was $6.5 million for the year ended December 31, 2010 compared to net cash
provided by investing activities of $5.0 million and $2.8 million for the years ended December 31, 2009 and 2008, respectively. Net cash used in investing activities for the fiscal year ended December 31, 2010 is primarily related to an
increase in restricted cash of $6.5 million per the terms of our debt and lease agreements. Net cash provided by investing activities for the years ended December 31, 2009 and 2008, was primarily related to the proceeds from the maturity of
short-term investments partially offset by the purchase of short-term investments and, to a lesser extent, the purchase of property and equipment.

Net Cash Provided by Financing Activities

Net cash provided by
financing activities was $36.4 million, $13.2 million and $3.2 million for the years ended December 31, 2010, 2009 and 2008, respectively. For the year ended December 31, 2010, net cash provided by financing activities was
primarily attributable to the completion of a public offering that resulted in gross proceeds of $29.8 million for the issuance of common stock and common stock warrants, offset by $2.2 million in financing costs, a private placement transaction
that resulted in gross proceeds of $6.3 million for the issuance of preferred stock and common stock warrants, offset by $61,000 in financing costs and a registered direct offering that resulted in gross proceeds of $4.8 million for the issuance of
common stock, offset by $340,000 in financing costs, partially offset by repayments on our long-term debt.

For the year ended
December 31, 2009, net cash provided by financing activities was primarily attributable to the completion of a private placement transaction that resulted in gross proceeds of $15.9 million for the issuance of common stock and common stock
warrants, offset by $806,000 in financing costs, the completion of a registered direct offering that resulted in gross proceeds of $4.9 million for the issuance of common stock, offset by $92,000 in financing costs and debt funding proceeds of $5.0
million automatically funded on April 28, 2009 per the terms of the $20.0 million debt facility we entered into on November 18, 2008, partially offset by repayments on our long-term debt.

For the year ended December 31, 2008, net cash provided by financing activities was primarily attributable to proceeds from debt
financing of $15.0 million per the terms of the $20.0 million debt facility we entered into on November 18, 2008, partially offset by repayments on our long-term debt.

Operating Capital and Capital Expenditure Requirements

To date, we
have not commercialized any products and we have not generated any operating revenues. We are taking the necessary steps to commercialize the Maestro RC System in Australia which includes the filing of an application for approval and listing with
the TGA upon receipt of European CE Mark certification for the Maestro RC System. We hope to receive TGA approval during the second half of 2011. In October 2010 we received unconditional approval from the FDA of our IDE to complete a pivotal trial
using the Maestro RC System. As such, we do not expect to generate revenue in the United States before late 2013 and then, only if we successfully enroll and implant the clinical trial, achieve favorable results and receive FDA approval of our
Maestro System. We anticipate that we will continue to incur substantial net losses for the next several years as we develop our products, prepare for the potential commercial launch of our Maestro RC System, develop the corporate infrastructure
required to sell our products, operate as a publicly-traded company and pursue additional applications for our technology platform.



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We believe that our cash, cash equivalents and restricted cash balance of $37.4 million as
of December 31, 2010, and any interest income we earn on these balances will be sufficient to meet our anticipated cash requirements through 2012, assuming our planned commercialization and we do not receive any other additional funds. If our
available cash, cash equivalents, restricted cash and investment balances are insufficient to satisfy our liquidity requirements, we may seek to sell additional equity or debt securities or enter into a credit facility. The sale of additional equity
and debt securities may result in dilution to our stockholders. If we raise additional funds through the issuance of debt securities, these securities could have rights senior to those of our common stock and could contain covenants that would
restrict our operations. We may require additional capital beyond our currently forecasted amounts. Any such required additional capital may not be available on reasonable terms, if at all. If we are unable to obtain additional financing, we may be
required to reduce the scope of, delay, or eliminate some or all of, our planned research, development and commercialization activities, which could materially harm our business.

Our forecast of the period of time through which our financial resources will be adequate to support our operations, the costs to
complete development of products and the cost to commercialize our products are forward-looking statements and involve risks and uncertainties, and actual results could vary materially and negatively as a result of a number of factors, including the
factors discussed in Part I, Item 1A, Risk Factors, of this Annual Report on Form 10-K. We have based these estimates on assumptions that may prove to be wrong, and we could utilize our available capital resources sooner than we
currently expect.

Because of the numerous risks and uncertainties associated with the development of medical devices, such as
our Maestro System, we are unable to estimate the exact amounts of capital outlays and operating expenditures necessary to complete the development of the products and successfully deliver a commercial product to the market. Our future capital
requirements will depend on many factors, including but not limited to the following:



| |  |  | the scope, rate of progress, results and cost of our clinical trials and other research and development activities;
| | - |  | -------------------------------------------------------------------------------------------------------------------



| |  |  | the cost and timing of regulatory approvals;
| | - |  | --------------------------------------------



| |  |  | the cost and timing of establishing sales, marketing and distribution capabilities;
| | - |  | -----------------------------------------------------------------------------------



| |  |  | the cost of establishing clinical and commercial supplies of our Maestro System and any products that we may develop;
| | - |  | ---------------------------------------------------------------------------------------------------------------------



| |  |  | the rate of market acceptance of our Maestro System and VBLOC therapy and any other product candidates;
| | - |  | -------------------------------------------------------------------------------------------------------



| |  |  | the cost of filing and prosecuting patent applications and defending and enforcing our patent and other intellectual property rights;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the cost of defending, in litigation or otherwise, any claims that we infringe third-party patent or other intellectual property rights;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the effect of competing products and market developments;
| | - |  | ---------------------------------------------------------



| |  |  | the cost of explanting clinical devices;
| | - |  | ----------------------------------------



| |  |  | the terms and timing of any collaborative, licensing or other arrangements that we may establish;
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | any revenue generated by sales of our Maestro System or our future products; and
| | - |  | --------------------------------------------------------------------------------



| |  |  | the extent to which we invest in products and technologies, although we currently have no commitments or agreements relating to any of these types of
transactions.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------



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Contractual Obligations

The following table summarizes our contractual obligations as of December 31, 2010 and the effect those obligations are expected to
have on our financial condition and liquidity position in future periods:



|                                   |  |                        |           |  |                 |   |           |           |  |   |           |  |  |                  |           |  |  |   |   | 
|---------------------------------- |  | ---------------------- | --------- |  | --------------- | - | --------- | --------- |  | - | --------- |  |  | ---------------- | --------- |  |  | - | - | 
|                                   |  | Payments Due By Period |          
|Contractual Obligations            |  | Total                  |           |  | Less Than 1Year |   |           | 1-3 Years |  |   | 3-5 Years |  |  | More than5 Years |          
|Operating lease                    |  | $                      | 1,353,433 |  |                 | $ | 274,564   |           |  | $ | 565,711   |  |  | $                | 513,158   |  |  | $ |  | 
|Long-term debt, including interest |  |                        | 7,687,244 |  |                 |   | 1,372,748 |           |  |   | 5,168,441 |  |  |                  | 1,146,055 |  |  |   |  | 
|                                   |  |                        |           |  |                 |   |           |           |  |   |           |  |  |                  |           |  |  |   |   | 
|Total contractual cash obligations |  | $                      | 9,040,677 |  |                 | $ | 1,647,312 |           |  | $ | 5,734,152 |  |  | $                | 1,659,213 |  |  | $ |  | 
|                                   |  |                        |           |  |                 |   |           |           |  |   |           |  |  |                  |           |  |  |   |   | 

The table above reflects only payment obligations that are fixed and determinable. Our operating lease
commitments relate to our corporate headquarters in St. Paul, Minnesota.

On July 8, 2010 we entered into a Second
Amendment (the Second Amendment) to the Loan Agreement with SVB, which modified the repayment terms of the Term Loan such that from the date of the Second Amendment through December 31, 2010, we were only required to make interest only monthly
payments on the Term Loan, thereby reducing our monthly debt payment. Then, beginning on January 1, 2011, the remaining balance due on the Term Loan will amortize over 30 equal payments of principal and interest, which will be payable monthly.
In addition, the Second Amendment amended the interest rate due on the remaining principal amount of the Term Loan from 10.0% to a fixed annual rate of 11.0%, payable monthly. On November 4, 2010 we entered into a Third Amendment to the Loan
Agreement with SVB. There were no changes to the repayment terms of the Term Loan as defined in the Second Amendment. On March 3, 2011 we entered into a Fourth Amendment to the Loan Agreement, which modifies the repayment terms of the Term Loan such
that beginning April 1, 2011 through September 30, 2011, we are only required to make interest only monthly payments on the Term Loan, thereby reducing our monthly debt payment. Then, beginning on October 1, 2011, the remaining
balance due on the Term Loan will amortize over 30 equal payments of principal and interest, which will be payable monthly. In addition, the Fourth Amendment amends the interest rate due on the remaining principal amount of the Term Loan from 11.0%
to a fixed annual rate of 6.25% if the liquidity ratio is greater than 1.50:1.00 and no Event of Default (as defined in the Loan Agreement) has occurred or is continuing or 9.00% if the liquidity ratio is less than 1.50:1.00 or an Event of Default
has occurred or is continuing, payable monthly. The table above reflects this amendment, assuming a 6.25% fixed annual rate. See Note 16 to our consolidated financial statements included in Item 8 of this Annual Report on Form 10-K for a
more detailed description of the fourth amendment.

The table above excludes a recent two-year extension of our five-year
license agreement with the Mayo Foundation for Medical Education and Research (Mayo Foundation) entered into in 2005, extended on March 11, 2010 and further amended on January 15, 2011. Under the terms of the amendment effective on
January 15, 2011, the Mayo Foundation will receive an annual retainer of $75,000 in 2011. We may also be obligated to pay the Mayo Foundation, contingent upon the occurrence of certain future events, earned royalty payments, including a minimum
annual royalty as defined by the agreement, for the commercial sale of products developed and patented by the Mayo Foundation, jointly patented by the Company and the Mayo Foundation, or a product where the Mayo Foundation provided know-how as
defined by the agreement. If no products are patented, the minimum royalty is not due.

Off-balance-sheet Arrangements

Since our inception, we have not engaged in any off-balance-sheet arrangements, including the use of structured finance, special purpose
entities or variable interest entities as defined by rules enacted by the Securities and Exchange Commission and Financial Accounting Standards Board, and accordingly, no such arrangements are likely to have a current or future effect on our
financial position, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources.

Recent Accounting
Pronouncements

There have been no significant changes in recent accounting pronouncements during the fiscal year ended
December 31, 2010.



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|ITEM 7A. | QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK
|-------- | ---------------------------------------------------------

Our exposure to market risk is confined to our cash, cash equivalents, restricted cash and short-term investments. As of December 31,
2010, we had $37.4 million in cash, cash equivalents, restricted cash and short-term investments. The goals of our investment policy are preservation of capital, fulfillment of liquidity needs and fiduciary control of cash and investments. We also
seek to maximize income from our investments without assuming significant risk. To achieve our goals, we may maintain a portfolio of cash equivalents and investments in a variety of securities of high credit quality. The securities in our investment
portfolio, if any, are not leveraged, are classified as either available for sale or held-to-maturity and are, due to their very short-term nature, subject to minimal interest rate risk. We currently do not hedge interest rate exposure. Because of
the short-term maturities of our cash equivalents and investments, we do not believe that an increase in market rates would have any material negative impact on the value of our investment portfolio. We have no investments denominated in foreign
currencies and therefore our investments are not subject to foreign currency exchange risk.



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|ITEM 8. | FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
|------- | -------------------------------------------

Index to Financial Statements



|                                                          |  |      |    | 
|--------------------------------------------------------- |  | ---- | -- | 
|                                                          |  | Page |   
|Report of Independent Registered Public Accounting Firm   |  |      | 61 | 
|Financial Statements                                      |  |      |    | 
|Consolidated Balance Sheets                               |  |      | 62 | 
|Consolidated Statements of Operations                     |  |      | 63 | 
|Consolidated Statements of Stockholders Equity (Deficit) |  |      | 64 | 
|Consolidated Statements of Cash Flows                     |  |      | 72 | 
|Notes to Consolidated Financial Statements                |  |      | 73 | 



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Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of

EnteroMedics Inc.

St. Paul, Minnesota

We have audited the accompanying consolidated balance sheets of EnteroMedics Inc. and subsidiary (a development stage company) (the
Company) as of December 31, 2010 and 2009, and the related consolidated statements of operations, stockholders equity (deficit), and cash flows for each of the three years in the period ended December 31, 2010, and for
the period from December 19, 2002 (date of inception) to December 31, 2010 These consolidated financial statements are the responsibility of the Companys management. Our responsibility is to express an opinion on these financial
statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting
Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Company is not required to have, nor were we
engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but
not for the purpose of expressing an opinion on the effectiveness of the Companys internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the
amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

In our opinion, such consolidated financial statements present fairly, in all material
respects, the financial position of the Company and subsidiary as of December 31, 2010 and 2009, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2010, and for the period
from December 19, 2002 (date of inception) to December 31, 2010, in conformity with accounting principles generally accepted in the United States of America.

As discussed in Note 2 to the consolidated financial statements, effective January 1, 2009, the Company adopted new authoritative accounting guidance regarding the financial reporting for outstanding
equity-linked financial instruments.



|                             
|-----------------------------
|/s/    DELOITTE & TOUCHE LLP 
|                             
|Minneapolis, MN
March 7, 2011



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ENTEROMEDICS INC.

(A development stage company)

Consolidated Balance Sheets



|                                                                                                                                                               |      |              |              |      |  |   |              |  
|-------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---- | ------------ | ------------ | ---- |  | - | ------------ | -
|                                                                                                                                                               |      | December 31, |             
|                                                                                                                                                               | 2010 |              |              | 2009 | 
|ASSETS                                                                                                                                                         |      |              |              |      |  |   |              |  
|Current assets:                                                                                                                                                |      |              |              |      |  |   |              |  
|Cash and cash equivalents                                                                                                                                      |      | $            | 30,840,560   |      |  | $ | 14,617,594   |  
|Restricted cash                                                                                                                                                |      |              | 6,527,031    |      |  |   |             |  
|Other receivables                                                                                                                                              |      |              |             |      |  |   | 10,007       |  
|Prepaid expenses and other current assets                                                                                                                      |      |              | 436,538      |      |  |   | 474,336      |  
|                                                                                                                                                               |      |              |              |      |  |   |              |  
|Total current assets                                                                                                                                           |      |              | 37,804,129   |      |  |   | 15,101,937   |  
|Property and equipment, net                                                                                                                                    |      |              | 741,564      |      |  |   | 965,829      |  
|Other assets                                                                                                                                                   |      |              | 141,572      |      |  |   | 146,234      |  
|                                                                                                                                                               |      |              |              |      |  |   |              |  
|Total assets                                                                                                                                                   |      | $            | 38,687,265   |      |  | $ | 16,214,000   |  
|                                                                                                                                                               |      |              |              |      |  |   |              |  
|                                                                                                                                                               |      |             
|LIABILITIES AND STOCKHOLDERS EQUITY                                                                                                                           |      |              |              |      |  |   |              |  
|Current liabilities:                                                                                                                                           |      |              |              |      |  |   |              |  
|Current portion of notes payable                                                                                                                               |      | $            | 921,998      |      |  | $ | 3,880,656    |  
|Accounts payable                                                                                                                                               |      |              | 125,188      |      |  |   | 33,618       |  
|Accrued expenses                                                                                                                                               |      |              | 2,538,371    |      |  |   | 2,077,916    |  
|Accrued interest payable                                                                                                                                       |      |              | 411,492      |      |  |   | 288,305      |  
|                                                                                                                                                               |      |              |              |      |  |   |              |  
|Total current liabilities                                                                                                                                      |      |              | 3,997,049    |      |  |   | 6,280,495    |  
|Notes payable, less current portion (net discounts of $421,874 and $455,469 at December 31, 2010 and 2009,
respectively)                                       |      |              | 4,983,159    |      |  |   | 3,880,810    |  
|Common stock warrant liability                                                                                                                                 |      |              |             |      |  |   | 471,585      |  
|                                                                                                                                                               |      |              |              |      |  |   |              |  
|Total liabilities                                                                                                                                              |      |              | 8,980,208    |      |  |   | 10,632,890   |  
|                                                                                                                                                               |      |              |              |      |  |   |              |  
|Stockholders equity:                                                                                                                                          |      |              |              |      |  |   |              |  
|Common stock, $0.01 par value 85,000,000 shares authorized; 27,892,388 and 6,229,731 shares issued and outstanding at
December 31, 2010 and 2009, respectively |      |              | 278,924      |      |  |   | 62,297       |  
|Additional paid-in capital                                                                                                                                     |      |              | 180,143,120  |      |  |   | 138,888,080  |  
|Deferred compensation                                                                                                                                          |      |              |             |      |  |   | (1,667       | )
|Deficit accumulated during development stage                                                                                                                   |      |              | (150,714,987 | )    |  |   | (133,367,600 | )
|                                                                                                                                                               |      |              |              |      |  |   |              |  
|Total stockholders equity                                                                                                                                     |      |              | 29,707,057   |      |  |   | 5,581,110    |  
|                                                                                                                                                               |      |              |              |      |  |   |              |  
|Total liabilities and stockholders equity                                                                                                                     |      | $            | 38,687,265   |      |  | $ | 16,214,000   |  
|                                                                                                                                                               |      |              |              |      |  |   |              |  

See accompanying notes to consolidated financial statements.



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ENTEROMEDICS INC.

(A development stage company)

Consolidated Statements of Operations



|                                                            |  |                          |             |   |                                                           |   |             |      |  |   |             |   |  |   |              |  
|----------------------------------------------------------- |  | ------------------------ | ----------- | - | --------------------------------------------------------- | - | ----------- | ---- |  | - | ----------- | - |  | - | ------------ | -
|                                                            |  | Years ended December 31, |             |   | Period
fromDecember 19,2002(inception) toDecember 31,2010 |  
|                                                            |  | 2010                     |             |   | 2009                                                      |   |             | 2008 |  |  
|Operating expenses:                                         |  |                          |             |   |                                                           |   |             |      |  |   |             |   |  |   |              |  
|Research and development                                    |  | $                        | 8,498,857   |   |                                                           | $ | 15,580,746  |      |  | $ | 27,673,725  |   |  | $ | 100,108,336  |  
|Selling, general and administrative                         |  |                          | 7,678,259   |   |                                                           |   | 8,631,597   |      |  |   | 8,596,703   |   |  |   | 39,585,623   |  
|                                                            |  |                          |             |   |                                                           |   |             |      |  |   |             |   |  |   |              |  
|Total operating expenses                                    |  |                          | 16,177,116  |   |                                                           |   | 24,212,343  |      |  |   | 36,270,428  |   |  |   | 139,693,959  |  
|Other income (expense):                                     |  |                          |             |   |                                                           |   |             |      |  |   |             |   |  |   |              |  
|Interest income                                             |  |                          | 5,597       |   |                                                           |   | 79,355      |      |  |   | 1,101,923   |   |  |   | 4,024,022    |  
|Interest expense                                            |  |                          | (1,258,406  | ) |                                                           |   | (4,104,300  | )    |  |   | (2,683,658  | ) |  |   | (10,839,911  | )
|Change in value of warrant liability                        |  |                          | 158,834     |   |                                                           |   | (3,644,549  | )    |  |   |            |   |  |   | (3,840,622   | )
|Other, net                                                  |  |                          | (76,296     | ) |                                                           |   | (47,363     | )    |  |   | (21,865     | ) |  |   | (233,549     | )
|                                                            |  |                          |             |   |                                                           |   |             |      |  |   |             |   |  |   |              |  
|Net loss                                                    |  | $                        | (17,347,387 | ) |                                                           | $ | (31,929,200 | )    |  | $ | (37,874,028 | ) |  | $ | (150,584,019 | )
|                                                            |  |                          |             |   |                                                           |   |             |      |  |   |             |   |  |   |              |  
|Net loss per sharebasic and diluted                        |  | $                        | (2.06       | ) |                                                           | $ | (6.42       | )    |  | $ | (13.50      | ) |  |   |              |  
|                                                            |  |                          |             |   |                                                           |   |             |      |  |   |             |   |  |   |              |  
|Shares used to compute basic and diluted net loss per share |  |                          | 8,419,575   |   |                                                           |   | 4,974,326   |      |  |   | 2,805,944   |   |  |   |              |  
|                                                            |  |                          |             |   |                                                           |   |             |      |  |   |             |   |  |   |              |  

See accompanying notes to consolidated financial statements.



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ENTEROMEDICS INC.

(A development stage company)

Consolidated Statements of Stockholders Equity (Deficit)

Period
from December 19, 2002 (inception) to December 31, 2010



|                                                                                                                                                                                       |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                          |   |  |                      |  |         |                                     |  |   |                                              |   |  |                                   |         |   |  |   |      |   |  |   |           |   |  |   |   |  |  |   |   |  |  |   |            |   |  |   |            |  
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------- | - |  | ---------------------------------- | - | - | ---------------------------------- |  |  | ------------ |  |  | ------------------------ | - |  | -------------------- |  | ------- | ----------------------------------- |  | - | -------------------------------------------- | - |  | --------------------------------- | ------- | - |  | - | ---- | - |  | - | --------- | - |  | - | - |  |  | - | - |  |  | - | ---------- | - |  | - | ---------- | -
|                                                                                                                                                                                       |  | Series CConvertiblePreferred Stock |   |  | Series BConvertiblePreferred Stock |   |   | Series AConvertiblePreferred Stock |  |  | Common Stock |  |  | AdditionalPaid-inCapital |   |  | DeferredCompensation |  |         | AccumulatedOtherComprehensiveIncome |  |   | DeficitAccumulatedDuring theDevelopmentStage |   |  | TotalStockholdersEquity(Deficit) |        
|                                                                                                                                                                                       |  | Shares                             |   |  | Amount                             |   |   | Shares                             |  |  | Amount       |  |  | Shares                   |   |  | Amount               |  |         | Shares                              |  |   | Amount                                       |   |  |                                   |         |   | 
|Common stock issued at inception of Alpha Medical, Inc. on December 19, 2002 at $0.54 per share for cash                                                                               |  |                                    |  |  |                                    | $ |  |                                    |  |  |             |  |  | $                        |  |  |                      |  |        |                                     |  | $ |                                             |   |  |                                   | 18,315  |   |  | $ | 183  |   |  | $ | 9,817     |   |  | $ |  |  |  | $ |  |  |  | $ |           |   |  | $ | 10,000     |  
|Common stock issued at inception of Beta Medical, Inc. on December 19, 2002 at $0.54 per share for cash                                                                                |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |  |  |                      |  |        |                                     |  |   |                                             |   |  |                                   | 18,315  |   |  |   | 183  |   |  |   | 9,817     |   |  |   |  |  |  |   |  |  |  |   |           |   |  |   | 10,000     |  
|Alpha Medical, Inc. Series A convertible preferred stock issued on December 31, 2002 at $54.60 per share for
cash                                                                      |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |  |  |                      |  | 5,525   |                                     |  |   | 55                                           |   |  |                                   |        |   |  |   |     |   |  |   | 301,619   |   |  |   |  |  |  |   |  |  |  |   |           |   |  |   | 301,674    |  
|Beta Medical, Inc. Series A convertible preferred stock issued on December 31, 2002 at $54.60 per share for
cash                                                                       |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |  |  |                      |  | 5,525   |                                     |  |   | 55                                           |   |  |                                   |        |   |  |   |     |   |  |   | 301,619   |   |  |   |  |  |  |   |  |  |  |   |           |   |  |   | 301,674    |  
|Net loss                                                                                                                                                                               |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |  |  |                      |  |        |                                     |  |   |                                             |   |  |                                   |        |   |  |   |     |   |  |   |          |   |  |   |  |  |  |   |  |  |  |   | (603,348   | ) |  |   | (603,348   | )
|                                                                                                                                                                                       |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                          |   |  |                      |  |         |                                     |  |   |                                              |   |  |                                   |         |   |  |   |      |   |  |   |           |   |  |   |   |  |  |   |   |  |  |   |            |   |  |   |            |  
|Balance, December 31, 2002                                                                                                                                                             |  |                                    |  |  |                                    | $ |  |                                    |  |  |             |  |  | $                        |  |  |                      |  | 11,050  |                                     |  | $ | 110                                          |   |  |                                   | 36,630  |   |  | $ | 366  |   |  | $ | 622,872   |   |  | $ |  |  |  | $ |  |  |  | $ | (603,348   | ) |  | $ | 20,000     |  
|                                                                                                                                                                                       |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                          |   |  |                      |  |         |                                     |  |   |                                              |   |  |                                   |         |   |  |   |      |   |  |   |           |   |  |   |   |  |  |   |   |  |  |   |            |   |  |   |            |  
|Alpha Medical, Inc. Series A convertible preferred stock issued on October 1, 2003 at $54.60 per share for
cash                                                                        |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |  |  |                      |  | 6,410   |                                     |  |   | 64                                           |   |  |                                   |        |   |  |   |     |   |  |   | 349,936   |   |  |   |  |  |  |   |  |  |  |   |           |   |  |   | 350,000    |  
|Beta Medical, Inc. Series A convertible preferred stock issued on October 1, 2003 at $54.60 per share for
cash                                                                         |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |  |  |                      |  | 15,568  |                                     |  |   | 156                                          |   |  |                                   |        |   |  |   |     |   |  |   | 849,844   |   |  |   |  |  |  |   |  |  |  |   |           |   |  |   | 850,000    |  
|Cancellation of Alpha Medical, Inc. Series A convertible preferred stock and common stock upon merger with Beta Medical, Inc.
effective October 1, 2003                                |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |  |  |                      |  | (11,936 | )                                   |  |   | (119                                         | ) |  |                                   | (18,315 | ) |  |   | (183 | ) |  |   | (661,372  | ) |  |   |  |  |  |   |  |  |  |   |           |   |  |   | (661,674   | )
|Issuance of Series A convertible preferred stock upon merger of Alpha Medical, Inc. and Beta Medical, Inc. effective
October 1, 2003                                                   |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |  |  |                      |  | 10,989  |                                     |  |   | 110                                          |   |  |                                   |        |   |  |   |     |   |  |   | 661,564   |   |  |   |  |  |  |   |  |  |  |   |           |   |  |   | 661,674    |  
|Common stock issued in October 2003 at $0.54 per share for cash                                                                                                                        |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |  |  |                      |  |        |                                     |  |   |                                             |   |  |                                   | 19,229  |   |  |   | 192  |   |  |   | 10,308    |   |  |   |  |  |  |   |  |  |  |   |           |   |  |   | 10,500     |  
|Warrants issued for the purchase of 3,919 shares of Series B convertible preferred stock for cash at $0.03 per share in
connection with the November 13, 2003 convertible bridge notes |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |  |  |                      |  |        |                                     |  |   |                                             |   |  |                                   |        |   |  |   |     |   |  |   | 107       |   |  |   |  |  |  |   |  |  |  |   |           |   |  |   | 107        |  
|Net loss                                                                                                                                                                               |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |  |  |                      |  |        |                                     |  |   |                                             |   |  |                                   |        |   |  |   |     |   |  |   |          |   |  |   |  |  |  |   |  |  |  |   | (1,900,288 | ) |  |   | (1,900,288 | )
|                                                                                                                                                                                       |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                          |   |  |                      |  |         |                                     |  |   |                                              |   |  |                                   |         |   |  |   |      |   |  |   |           |   |  |   |   |  |  |   |   |  |  |   |            |   |  |   |            |  
|Balance, December 31, 2003                                                                                                                                                             |  |                                    |  |  |                                    | $ |  |                                    |  |  |             |  |  | $                        |  |  |                      |  | 32,081  |                                     |  | $ | 321                                          |   |  |                                   | 37,544  |   |  | $ | 375  |   |  | $ | 1,833,259 |   |  | $ |  |  |  | $ |  |  |  | $ | (2,503,636 | ) |  | $ | (669,681   | )
|                                                                                                                                                                                       |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                          |   |  |                      |  |         |                                     |  |   |                                              |   |  |                                   |         |   |  |   |      |   |  |   |           |   |  |   |   |  |  |   |   |  |  |   |            |   |  |   |            |  

See accompanying notes to consolidated financial statements.



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ENTEROMEDICS INC.

(A development stage company)

Consolidated Statements of Stockholders Equity (Deficit) (Continued)

Period from December 19, 2002 (inception) to December 31, 2010



|                                                                                                                                                                                    |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                          |       |  |                      |  |        |                                     |  |   |                                              |  |  |                                   |        |  |  |   |     |  |  |   |            |  |  |   |        |   |  |   |   |  |  |   |            |   |  |   |            |  
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------- | - |  | ---------------------------------- | - | - | ---------------------------------- |  |  | ------------ |  |  | ------------------------ | ----- |  | -------------------- |  | ------ | ----------------------------------- |  | - | -------------------------------------------- |  |  | --------------------------------- | ------ |  |  | - | --- |  |  | - | ---------- |  |  | - | ------ | - |  | - | - |  |  | - | ---------- | - |  | - | ---------- | -
|                                                                                                                                                                                    |  | Series CConvertiblePreferred Stock |   |  | Series BConvertiblePreferred Stock |   |   | Series AConvertiblePreferred Stock |  |  | Common Stock |  |  | AdditionalPaid-inCapital |       |  | DeferredCompensation |  |        | AccumulatedOtherComprehensiveIncome |  |   | DeficitAccumulatedDuring theDevelopmentStage |  |  | TotalStockholdersEquity(Deficit) |       
|                                                                                                                                                                                    |  | Shares                             |   |  | Amount                             |   |   | Shares                             |  |  | Amount       |  |  | Shares                   |       |  | Amount               |  |        | Shares                              |  |   | Amount                                       |  |  |                                   |        |  | 
|Balance, December 31, 2003                                                                                                                                                          |  |                                    |  |  |                                    | $ |  |                                    |  |  |             |  |  | $                        |      |  |                      |  | 32,081 |                                     |  | $ | 321                                          |  |  |                                   | 37,544 |  |  | $ | 375 |  |  | $ | 1,833,259  |  |  | $ |       |   |  | $ |  |  |  | $ | (2,503,636 | ) |  | $ | (669,681   | )
|Warrants issued for the purchase of 1,081 shares of Series B convertible preferred stock for cash at $0.03 per share in
connection with the April 23, 2004 convertible bridge notes |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 30         |  |  |   |       |   |  |   |  |  |  |   |           |   |  |   | 30         |  
|Exercise of 20,963 Series A convertible preferred stock warrants on April 23, 2004 for cash at $8.95 per
share                                                                      |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |      |  |                      |  | 20,963 |                                     |  |   | 209                                          |  |  |                                   |       |  |  |   |    |  |  |   | 187,443    |  |  |   |       |   |  |   |  |  |  |   |           |   |  |   | 187,652    |  
|Warrants issued for the purchase of 733 shares of Series B convertible preferred stock for cash at $0.03 per share in connection
with the June 30, 2004 convertible bridge notes    |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 20         |  |  |   |       |   |  |   |  |  |  |   |           |   |  |   | 20         |  
|Fair value of warrants related to convertible bridge notes                                                                                                                          |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 153,722    |  |  |   |       |   |  |   |  |  |  |   |           |   |  |   | 153,722    |  
|Series B convertible preferred stock issued upon conversion of $1,564,843 of convertible bridge notes and $34,809 of accrued
interest payable on July 30, 2004 at $23.66 per share  |  |                                    |  |  |                                    |   |  |                                    |  |  | 67,615       |  |  |                          | 676   |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 1,598,976  |  |  |   |       |   |  |   |  |  |  |   |           |   |  |   | 1,599,652  |  
|Series B convertible preferred stock issued on July 30, 2004 for cash at $23.66 per share, net of financing costs of
$94,776                                                        |  |                                    |  |  |                                    |   |  |                                    |  |  | 319,128      |  |  |                          | 3,191 |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 7,452,034  |  |  |   |       |   |  |   |  |  |  |   |           |   |  |   | 7,455,225  |  
|Warrants issued for the purchase of 7,556 shares of Series B convertible preferred stock on December 1, 2004 valued at $6.45
per warrant for debt commitment                        |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 48,720     |  |  |   |       |   |  |   |  |  |  |   |           |   |  |   | 48,720     |  
|Issuance of 3,819 common stock options to nonemployees in 2004 valued at $0.94 per option                                                                                           |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 3,610      |  |  |   | (3,610 | ) |  |   |  |  |  |   |           |   |  |   |           |  
|Amortization of deferred compensation                                                                                                                                               |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   |           |  |  |   | 830    |   |  |   |  |  |  |   |           |   |  |   | 830        |  
|Net loss                                                                                                                                                                            |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   |           |  |  |   |       |   |  |   |  |  |  |   | (3,448,752 | ) |  |   | (3,448,752 | )
|                                                                                                                                                                                    |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                          |       |  |                      |  |        |                                     |  |   |                                              |  |  |                                   |        |  |  |   |     |  |  |   |            |  |  |   |        |   |  |   |   |  |  |   |            |   |  |   |            |  
|Balance, December 31, 2004                                                                                                                                                          |  |                                    |  |  |                                    | $ |  |                                    |  |  | 386,743      |  |  | $                        | 3,867 |  |                      |  | 53,044 |                                     |  | $ | 530                                          |  |  |                                   | 37,544 |  |  | $ | 375 |  |  | $ | 11,277,814 |  |  | $ | (2,780 | ) |  | $ |  |  |  | $ | (5,952,388 | ) |  | $ | 5,327,418  |  
|                                                                                                                                                                                    |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                          |       |  |                      |  |        |                                     |  |   |                                              |  |  |                                   |        |  |  |   |     |  |  |   |            |  |  |   |        |   |  |   |   |  |  |   |            |   |  |   |            |  

See accompanying notes to consolidated financial statements.



65



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##### Table of Contents

ENTEROMEDICS INC.

(A development stage company)

Consolidated Statements of Stockholders Equity (Deficit) (Continued)

Period from December 19, 2002 (inception) to December 31, 2010



|                                                                                                                                                                        |        |                                    |   |        |                                    |   |        |                                    |  |        |              |  |        |                          |       |        |                      |  |        |                                     |  |        |                                              |  |  |                                   |        |  |  |   |     |  |  |   |            |  |  |   |          |   |  |   |   |  |  |   |             |   |  |   |             |  
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------ | ---------------------------------- | - | ------ | ---------------------------------- | - | ------ | ---------------------------------- |  | ------ | ------------ |  | ------ | ------------------------ | ----- | ------ | -------------------- |  | ------ | ----------------------------------- |  | ------ | -------------------------------------------- |  |  | --------------------------------- | ------ |  |  | - | --- |  |  | - | ---------- |  |  | - | -------- | - |  | - | - |  |  | - | ----------- | - |  | - | ----------- | -
|                                                                                                                                                                        |        | Series CConvertiblePreferred Stock |   |        | Series BConvertiblePreferred Stock |   |        | Series AConvertiblePreferred Stock |  |        | Common Stock |  |        | AdditionalPaid-inCapital |       |        | DeferredCompensation |  |        | AccumulatedOtherComprehensiveIncome |  |        | DeficitAccumulatedDuring theDevelopmentStage |  |  | TotalStockholdersEquity(Deficit) |       
|                                                                                                                                                                        | Shares |                                    |   | Amount |                                    |   | Shares |                                    |  | Amount |              |  | Shares |                          |       | Amount |                      |  | Shares |                                     |  | Amount |                                              |  |  |                                   |        | 
|Balance, December 31, 2004                                                                                                                                              |        |                                    |  |        |                                    | $ |       |                                    |  |        | 386,743      |  |        | $                        | 3,867 |        |                      |  | 53,044 |                                     |  | $      | 530                                          |  |  |                                   | 37,544 |  |  | $ | 375 |  |  | $ | 11,277,814 |  |  | $ | (2,780   | ) |  | $ |  |  |  | $ | (5,952,388  | ) |  | $ | 5,327,418   |  
|Series B convertible preferred stock issued on June 17, 2005 for cash at $23.66 per share, net of financing costs of
$5,218                                             |        |                                    |  |        |                                    |   |       |                                    |  |        | 126,806      |  |        |                          | 1,268 |        |                      |  |       |                                     |  |        |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 2,993,514  |  |  |   |         |   |  |   |  |  |  |   |            |   |  |   | 2,994,782   |  
|Warrants issued for the purchase of 11,624 shares of Series B convertible preferred stock in September 2005 valued at $6.42 per
warrant for debt commitment and funding |        |                                    |  |        |                                    |   |       |                                    |  |        |             |  |        |                          |      |        |                      |  |       |                                     |  |        |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 74,636     |  |  |   |         |   |  |   |  |  |  |   |            |   |  |   | 74,636      |  
|Warrants issued for the purchase of 28,389 shares of common stock on December 12, 2005 for cash at $0.54 per
warrant                                                    |        |                                    |  |        |                                    |   |       |                                    |  |        |             |  |        |                          |      |        |                      |  |       |                                     |  |        |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 15,500     |  |  |   |         |   |  |   |  |  |  |   |            |   |  |   | 15,500      |  
|Series B convertible preferred stock issued on December 12, 2005 at $23.66 per share, net of financing costs of
$11,085                                                 |        |                                    |  |        |                                    |   |       |                                    |  |        | 200,776      |  |        |                          | 2,008 |        |                      |  |       |                                     |  |        |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 4,736,908  |  |  |   |         |   |  |   |  |  |  |   |            |   |  |   | 4,738,916   |  
|Common stock issued to nonemployees in 2005 valued at $2.76 per share                                                                                                   |        |                                    |  |        |                                    |   |       |                                    |  |        |             |  |        |                          |      |        |                      |  |       |                                     |  |        |                                             |  |  |                                   | 37,546 |  |  |   | 376 |  |  |   | 102,124    |  |  |   | (102,500 | ) |  |   |  |  |  |   |            |   |  |   |            |  
|Issuance of 7,757 common stock options to nonemployees in 2005 valued at $0.94 per option                                                                               |        |                                    |  |        |                                    |   |       |                                    |  |        |             |  |        |                          |      |        |                      |  |       |                                     |  |        |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 7,288      |  |  |   | (7,288   | ) |  |   |  |  |  |   |            |   |  |   |            |  
|Exercise of 4,927 common stock options in 2005 for cash at $2.76 per share                                                                                              |        |                                    |  |        |                                    |   |       |                                    |  |        |             |  |        |                          |      |        |                      |  |       |                                     |  |        |                                             |  |  |                                   | 4,927  |  |  |   | 49  |  |  |   | 13,401     |  |  |   |         |   |  |   |  |  |  |   |            |   |  |   | 13,450      |  
|Amortization of deferred compensation                                                                                                                                   |        |                                    |  |        |                                    |   |       |                                    |  |        |             |  |        |                          |      |        |                      |  |       |                                     |  |        |                                             |  |  |                                   |       |  |  |   |    |  |  |   |           |  |  |   | 25,041   |   |  |   |  |  |  |   |            |   |  |   | 25,041      |  
|Net loss                                                                                                                                                                |        |                                    |  |        |                                    |   |       |                                    |  |        |             |  |        |                          |      |        |                      |  |       |                                     |  |        |                                             |  |  |                                   |       |  |  |   |    |  |  |   |           |  |  |   |         |   |  |   |  |  |  |   | (11,215,191 | ) |  |   | (11,215,191 | )
|                                                                                                                                                                        |        |                                    |   |        |                                    |   |        |                                    |  |        |              |  |        |                          |       |        |                      |  |        |                                     |  |        |                                              |  |  |                                   |        |  |  |   |     |  |  |   |            |  |  |   |          |   |  |   |   |  |  |   |             |   |  |   |             |  
|Balance, December 31, 2005                                                                                                                                              |        |                                    |  |        |                                    | $ |       |                                    |  |        | 714,325      |  |        | $                        | 7,143 |        |                      |  | 53,044 |                                     |  | $      | 530                                          |  |  |                                   | 80,017 |  |  | $ | 800 |  |  | $ | 19,221,185 |  |  | $ | (87,527  | ) |  | $ |  |  |  | $ | (17,167,579 | ) |  | $ | 1,974,552   |  
|                                                                                                                                                                        |        |                                    |   |        |                                    |   |        |                                    |  |        |              |  |        |                          |       |        |                      |  |        |                                     |  |        |                                              |  |  |                                   |        |  |  |   |     |  |  |   |            |  |  |   |          |   |  |   |   |  |  |   |             |   |  |   |             |  

See accompanying notes to consolidated financial statements.



66



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##### Table of Contents

ENTEROMEDICS INC.

(A development stage company)

Consolidated Statements of Stockholders Equity (Deficit) (Continued)

Period from December 19, 2002 (inception) to December 31, 2010



|                                                                                                                                                                                   |  |                                    |         |  |                                    |   |       |                                    |  |  |              |  |  |                          |       |  |                      |  |        |                                     |  |   |                                              |  |  |                                   |        |  |  |   |     |  |  |   |            |   |  |   |         |   |  |   |   |  |  |   |             |   |  |   |             |  
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------- | ------- |  | ---------------------------------- | - | ----- | ---------------------------------- |  |  | ------------ |  |  | ------------------------ | ----- |  | -------------------- |  | ------ | ----------------------------------- |  | - | -------------------------------------------- |  |  | --------------------------------- | ------ |  |  | - | --- |  |  | - | ---------- | - |  | - | ------- | - |  | - | - |  |  | - | ----------- | - |  | - | ----------- | -
|                                                                                                                                                                                   |  | Series CConvertiblePreferred Stock |         |  | Series BConvertiblePreferred Stock |   |       | Series AConvertiblePreferred Stock |  |  | Common Stock |  |  | AdditionalPaid-inCapital |       |  | DeferredCompensation |  |        | AccumulatedOtherComprehensiveIncome |  |   | DeficitAccumulatedDuring theDevelopmentStage |  |  | TotalStockholdersEquity(Deficit) |       
|                                                                                                                                                                                   |  | Shares                             |         |  | Amount                             |   |       | Shares                             |  |  | Amount       |  |  | Shares                   |       |  | Amount               |  |        | Shares                              |  |   | Amount                                       |  |  |                                   |        |  | 
|Balance, December 31, 2005                                                                                                                                                         |  |                                    |        |  |                                    | $ |      |                                    |  |  | 714,325      |  |  | $                        | 7,143 |  |                      |  | 53,044 |                                     |  | $ | 530                                          |  |  |                                   | 80,017 |  |  | $ | 800 |  |  | $ | 19,221,185 |   |  | $ | (87,527 | ) |  | $ |  |  |  | $ | (17,167,579 | ) |  | $ | 1,974,552   |  
|Warrants issued for the purchase of 5,812 shares of Series B convertible preferred stock in March 2006 valued at $17.55 per
warrant for debt funding                               |  |                                    |        |  |                                    |   |      |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 102,022    |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 102,022     |  
|Series C convertible preferred stock issued upon conversion of $5,250,003 of convertible bridge notes and $131,013 of accrued
interest payable on July 6, 2006 at $48.56 per share |  |                                    | 110,820 |  |                                    |   | 1,108 |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 5,379,908  |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 5,381,016   |  
|Series C convertible preferred stock issued on July 6, 2006 for cash at $48.56 per share, net of financing costs of
$2,222,342                                                     |  |                                    | 820,190 |  |                                    |   | 8,202 |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 37,594,459 |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 37,602,661  |  
|Warrants issued for the purchase of 24,606 shares of Series C convertible preferred stock on July 6, 2006 valued at $29.89
per warrant for equity financing                        |  |                                    |        |  |                                    |   |      |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 735,438    |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 735,438     |  
|Series C convertible preferred stock issued on December 11, 2006 for cash at $48.56 per share                                                                                      |  |                                    | 20,595  |  |                                    |   | 206   |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 999,794    |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 1,000,000   |  
|Series C convertible preferred stock warrants reclassified to convertible preferred stock warrant liability on December 11,
2006                                                   |  |                                    |        |  |                                    |   |      |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | (735,438   | ) |  |   |        |   |  |   |  |  |  |   |            |   |  |   | (735,438    | )
|Common stock issued to nonemployees in 2006 valued at $2.76 per share                                                                                                              |  |                                    |        |  |                                    |   |      |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   | 1,648  |  |  |   | 16  |  |  |   | 4,484      |   |  |   | (4,500  | ) |  |   |  |  |  |   |            |   |  |   |            |  
|Common stock issued to nonemployees in 2006 valued at $11.46 per share                                                                                                             |  |                                    |        |  |                                    |   |      |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   | 458    |  |  |   | 5   |  |  |   | 5,245      |   |  |   | (5,250  | ) |  |   |  |  |  |   |            |   |  |   |            |  
|Employee stock-based compensation expense                                                                                                                                          |  |                                    |        |  |                                    |   |      |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 47,479     |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 47,479      |  
|Nonemployee stock-based compensation expense                                                                                                                                       |  |                                    |        |  |                                    |   |      |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   | 86,125     |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 86,125      |  
|Exercise of 14,504 common stock options in 2006 for cash at $2.76 per share                                                                                                        |  |                                    |        |  |                                    |   |      |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   | 14,504 |  |  |   | 145 |  |  |   | 39,451     |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 39,596      |  
|Amortization of deferred compensation                                                                                                                                              |  |                                    |        |  |                                    |   |      |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   |           |   |  |   | 30,798  |   |  |   |  |  |  |   |            |   |  |   | 30,798      |  
|Net loss                                                                                                                                                                           |  |                                    |        |  |                                    |   |      |                                    |  |  |             |  |  |                          |      |  |                      |  |       |                                     |  |   |                                             |  |  |                                   |       |  |  |   |    |  |  |   |           |   |  |   |        |   |  |   |  |  |  |   | (17,690,477 | ) |  |   | (17,690,477 | )
|                                                                                                                                                                                   |  |                                    |         |  |                                    |   |       |                                    |  |  |              |  |  |                          |       |  |                      |  |        |                                     |  |   |                                              |  |  |                                   |        |  |  |   |     |  |  |   |            |   |  |   |         |   |  |   |   |  |  |   |             |   |  |   |             |  
|Balance, December 31, 2006                                                                                                                                                         |  |                                    | 951,605 |  |                                    | $ | 9,516 |                                    |  |  | 714,325      |  |  | $                        | 7,143 |  |                      |  | 53,044 |                                     |  | $ | 530                                          |  |  |                                   | 96,627 |  |  | $ | 966 |  |  | $ | 63,480,152 |   |  | $ | (66,479 | ) |  | $ |  |  |  | $ | (34,858,056 | ) |  | $ | 28,573,772  |  
|                                                                                                                                                                                   |  |                                    |         |  |                                    |   |       |                                    |  |  |              |  |  |                          |       |  |                      |  |        |                                     |  |   |                                              |  |  |                                   |        |  |  |   |     |  |  |   |            |   |  |   |         |   |  |   |   |  |  |   |             |   |  |   |             |  

See accompanying notes to consolidated financial statements.



67



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##### Table of Contents

ENTEROMEDICS INC.

(A development stage company)

Consolidated Statements of Stockholders Equity (Deficit) (Continued)

Period from December 19, 2002 (inception) to December 31, 2010



|                                                                                                                                                                |  |                                    |          |   |                                    |   |        |                                    |  |  |              |   |  |                          |        |   |                      |  |         |                                     |  |   |                                              |   |  |                                   |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |   |  |  |   |             |   |  |   |             |  
|--------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------- | -------- | - | ---------------------------------- | - | ------ | ---------------------------------- |  |  | ------------ | - |  | ------------------------ | ------ | - | -------------------- |  | ------- | ----------------------------------- |  | - | -------------------------------------------- | - |  | --------------------------------- | --------- |  |  | - | ------ |  |  | - | ----------- | - |  | - | ------- | - |  | - | - |  |  | - | ----------- | - |  | - | ----------- | -
|                                                                                                                                                                |  | Series CConvertiblePreferred Stock |          |   | Series BConvertiblePreferred Stock |   |        | Series AConvertiblePreferred Stock |  |  | Common Stock |   |  | AdditionalPaid-inCapital |        |   | DeferredCompensation |  |         | AccumulatedOtherComprehensiveIncome |  |   | DeficitAccumulatedDuring theDevelopmentStage |   |  | TotalStockholdersEquity(Deficit) |          
|                                                                                                                                                                |  | Shares                             |          |   | Amount                             |   |        | Shares                             |  |  | Amount       |   |  | Shares                   |        |   | Amount               |  |         | Shares                              |  |   | Amount                                       |   |  |                                   |           |  | 
|Balance, December 31, 2006                                                                                                                                      |  |                                    | 951,605  |   |                                    | $ | 9,516  |                                    |  |  | 714,325      |   |  | $                        | 7,143  |   |                      |  | 53,044  |                                     |  | $ | 530                                          |   |  |                                   | 96,627    |  |  | $ | 966    |  |  | $ | 63,480,152  |   |  | $ | (66,479 | ) |  | $ |  |  |  | $ | (34,858,056 | ) |  | $ | 28,573,772  |  
|Employee stock-based compensation expense                                                                                                                       |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   |          |  |  |   |       |  |  |   | 883,310     |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 883,310     |  
|Nonemployee stock-based compensation expense                                                                                                                    |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   |          |  |  |   |       |  |  |   | 1,289,349   |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 1,289,349   |  
|Warrants issued for the purchase of 11,327 shares of Series C convertible preferred stock in May 2007 valued at $48.56 per
warrant for debt facility commitment |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   |          |  |  |   |       |  |  |   | 550,212     |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 550,212     |  
|Warrants issued for the purchase of 5,664 shares of Series C convertible preferred stock in May 2007 valued at $49.67 per warrant
for debt funding              |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   |          |  |  |   |       |  |  |   | 281,321     |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 281,321     |  
|Warrants issued for the purchase of 2,832 shares of Series C convertible preferred stock in August 2007 valued at $69.83 per
warrant for debt funding           |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   |          |  |  |   |       |  |  |   | 197,731     |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 197,731     |  
|Warrants issued for the purchase of 2,832 shares of Series C convertible preferred stock in October 2007 valued at $68.76 per
warrant for debt funding          |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   |          |  |  |   |       |  |  |   | 194,716     |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 194,716     |  
|Series C convertible preferred stock warrants reclassified from convertible preferred stock warrant liability                                                   |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   |          |  |  |   |       |  |  |   | 1,090,345   |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 1,090,345   |  
|Issuance of common stock in initial public offering (IPO) in November 2007 for cash at $48.00 per share, net of financing costs
of $4,552,663                   |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   | 833,333   |  |  |   | 8,333  |  |  |   | 35,439,004  |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 35,447,337  |  
|Conversion of preferred stock to common stock in November 2007 in connection with the IPO                                                                       |  |                                    | (951,605 | ) |                                    |   | (9,516 | )                                  |  |  | (714,325     | ) |  |                          | (7,143 | ) |                      |  | (53,044 | )                                   |  |   | (530                                         | ) |  |                                   | 1,748,030 |  |  |   | 17,480 |  |  |   | (291        | ) |  |   |        |   |  |   |  |  |  |   |            |   |  |   |            |  
|Reclassification of amounts due to shareholders for fractional shares upon reverse stock split                                                                  |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   |          |  |  |   |       |  |  |   | (355        | ) |  |   |        |   |  |   |  |  |  |   |            |   |  |   | (355        | )
|Common stock issued to Mayo Foundation upon closing the IPO in November 2007 with a fair value of $48.30 per
share                                              |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   | 34,341    |  |  |   | 343    |  |  |   | 1,658,311   |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 1,658,654   |  
|Exercise of over-allotment option by underwriters in December 2007 in connection with the IPO for cash at $48.00 per share, net
of financing costs of $274,315  |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   | 81,642    |  |  |   | 817    |  |  |   | 3,643,660   |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 3,644,477   |  
|Exercise of 5,854 common stock options in 2007 for cash at $3.60 per share                                                                                      |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   | 5,854     |  |  |   | 59     |  |  |   | 21,128      |   |  |   |        |   |  |   |  |  |  |   |            |   |  |   | 21,187      |  
|Amortization of deferred compensation                                                                                                                           |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   |          |  |  |   |       |  |  |   |            |   |  |   | 24,812  |   |  |   |  |  |  |   |            |   |  |   | 24,812      |  
|Net loss                                                                                                                                                        |  |                                    |         |   |                                    |   |       |                                    |  |  |             |   |  |                          |       |   |                      |  |        |                                     |  |   |                                             |   |  |                                   |          |  |  |   |       |  |  |   |            |   |  |   |        |   |  |   |  |  |  |   | (28,575,348 | ) |  |   | (28,575,348 | )
|                                                                                                                                                                |  |                                    |          |   |                                    |   |        |                                    |  |  |              |   |  |                          |        |   |                      |  |         |                                     |  |   |                                              |   |  |                                   |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |   |  |  |   |             |   |  |   |             |  
|Balance, December 31, 2007                                                                                                                                      |  |                                    |         |   |                                    | $ |       |                                    |  |  |             |   |  | $                        |       |   |                      |  |        |                                     |  | $ |                                             |   |  |                                   | 2,799,827 |  |  | $ | 27,998 |  |  | $ | 108,728,593 |   |  | $ | (41,667 | ) |  | $ |  |  |  | $ | (63,433,404 | ) |  | $ | 45,281,520  |  
|                                                                                                                                                                |  |                                    |          |   |                                    |   |        |                                    |  |  |              |   |  |                          |        |   |                      |  |         |                                     |  |   |                                              |   |  |                                   |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |   |  |  |   |             |   |  |   |             |  

See accompanying notes to consolidated financial statements.



68



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##### Table of Contents

ENTEROMEDICS INC.

(A development stage company)

Consolidated Statements of Stockholders Equity (Deficit) (Continued)

Period from December 19, 2002 (inception) to December 31, 2010



|                                                                                                                                 |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |        |  |  |   |              |   |  |   |             |  
|-------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------- | - |  | ---------------------------------- | - | - | ---------------------------------- |  |  | ------------ |  |  | ------------------------- | - |  | -------------------- |  | - | ----------------------------------- |  | - | --------------------------------------------- |  |  | ---------------------------------- | --------- |  |  | - | ------ |  |  | - | ----------- | - |  | - | ------- | - |  | - | ------ |  |  | - | ------------ | - |  | - | ----------- | -
|                                                                                                                                 |  | Series CConvertiblePreferred Stock |   |  | Series BConvertiblePreferred Stock |   |   | Series AConvertiblePreferred Stock |  |  | Common Stock |  |  | AdditionalPaid-in
Capital |   |  | DeferredCompensation |  |   | AccumulatedOtherComprehensiveIncome |  |   | DeficitAccumulated
During theDevelopmentStage |  |  | TotalStockholders
Equity(Deficit) |          
|                                                                                                                                 |  | Shares                             |   |  | Amount                             |   |   | Shares                             |  |  | Amount       |  |  | Shares                    |   |  | Amount               |  |   | Shares                              |  |   | Amount                                        |  |  |                                    |           |  | 
|Balance, December 31, 2007                                                                                                       |  |                                    |  |  |                                    | $ |  |                                    |  |  |             |  |  | $                         |  |  |                      |  |  |                                     |  | $ |                                              |  |  |                                    | 2,799,827 |  |  | $ | 27,998 |  |  | $ | 108,728,593 |   |  | $ | (41,667 | ) |  | $ |       |  |  | $ | (63,433,404  | ) |  | $ | 45,281,520  |  
|Comprehensive loss:                                                                                                              |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |        |  |  |   |              |   |  |   |             |  
|Net loss                                                                                                                         |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   |            |   |  |   |        |   |  |   |       |  |  |   | (37,874,028  | ) |  |   | (37,874,028 | )
|Unrealized gains on available for sale investments                                                                               |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   |            |   |  |   |        |   |  |   | 12,988 |  |  |   |             |   |  |   | 12,988      |  
|                                                                                                                                 |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |        |  |  |   |              |   |  |   |             |  
|Total comprehensive loss                                                                                                         |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |        |  |  |   |              |   |  |   | (37,861,040 | )
|                                                                                                                                 |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |        |  |  |   |              |   |  |   |             |  
|Employee stock-based compensation expense                                                                                        |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   | 2,648,410   |   |  |   |        |   |  |   |       |  |  |   |             |   |  |   | 2,648,410   |  
|Nonemployee stock-based compensation expense                                                                                     |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   | (147,855    | ) |  |   |        |   |  |   |       |  |  |   |             |   |  |   | (147,855    | )
|Warrants issued for the purchase of 233,117 shares of common stock in November 2008 valued at $7.80 per warrant for debt
funding |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   | 1,398,702   |   |  |   |        |   |  |   |       |  |  |   |             |   |  |   | 1,398,702   |  
|Exercise of 16,829 common stock options in 2008 for cash from $2.76 to $11.46 per share                                          |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    | 16,829    |  |  |   | 169    |  |  |   | 65,238      |   |  |   |        |   |  |   |       |  |  |   |             |   |  |   | 65,407      |  
|Amortization of deferred compensation                                                                                            |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   |            |   |  |   | 20,000  |   |  |   |       |  |  |   |             |   |  |   | 20,000      |  
|                                                                                                                                 |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |        |  |  |   |              |   |  |   |             |  
|Balance, December 31, 2008                                                                                                       |  |                                    |  |  |                                    | $ |  |                                    |  |  |             |  |  | $                         |  |  |                      |  |  |                                     |  | $ |                                              |  |  |                                    | 2,816,656 |  |  | $ | 28,167 |  |  | $ | 112,693,088 |   |  | $ | (21,667 | ) |  | $ | 12,988 |  |  | $ | (101,307,432 | ) |  | $ | 11,405,144  |  
|                                                                                                                                 |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |        |  |  |   |              |   |  |   |             |  

See accompanying notes to consolidated financial statements.



69



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##### Table of Contents

ENTEROMEDICS INC.

(A development stage company)

Consolidated Statements of Stockholders Equity (Deficit) (Continued)

Period from December 19, 2002 (inception) to December 31, 2010



|                                                                                                                                                                |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |         |   |  |   |              |   |  |   |             |  
|--------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------- | - |  | ---------------------------------- | - | - | ---------------------------------- |  |  | ------------ |  |  | ------------------------- | - |  | -------------------- |  | - | ----------------------------------- |  | - | --------------------------------------------- |  |  | ---------------------------------- | --------- |  |  | - | ------ |  |  | - | ----------- | - |  | - | ------- | - |  | - | ------- | - |  | - | ------------ | - |  | - | ----------- | -
|                                                                                                                                                                |  | Series CConvertiblePreferred Stock |   |  | Series BConvertiblePreferred Stock |   |   | Series AConvertiblePreferred Stock |  |  | Common Stock |  |  | AdditionalPaid-in
Capital |   |  | DeferredCompensation |  |   | AccumulatedOtherComprehensiveIncome |  |   | DeficitAccumulated
During theDevelopmentStage |  |  | TotalStockholders
Equity(Deficit) |          
|                                                                                                                                                                |  | Shares                             |   |  | Amount                             |   |   | Shares                             |  |  | Amount       |  |  | Shares                    |   |  | Amount               |  |   | Shares                              |  |   | Amount                                        |  |  |                                    |           |  | 
|Balance, December 31, 2008                                                                                                                                      |  |                                    |  |  |                                    | $ |  |                                    |  |  |             |  |  | $                         |  |  |                      |  |  |                                     |  | $ |                                              |  |  |                                    | 2,816,656 |  |  | $ | 28,167 |  |  | $ | 112,693,088 |   |  | $ | (21,667 | ) |  | $ | 12,988  |   |  | $ | (101,307,432 | ) |  | $ | 11,405,144  |  
|Comprehensive loss:                                                                                                                                             |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |         |   |  |   |              |   |  |   |             |  
|Net loss                                                                                                                                                        |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   |            |   |  |   |        |   |  |   |        |   |  |   | (31,929,200  | ) |  |   | (31,929,200 | )
|Change in unrealized gain (loss) on available for sale investments                                                                                              |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   |            |   |  |   |        |   |  |   | (12,988 | ) |  |   |             |   |  |   | (12,988     | )
|                                                                                                                                                                |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |         |   |  |   |              |   |  |   |             |  
|Total comprehensive loss                                                                                                                                        |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |         |   |  |   |              |   |  |   | (31,942,188 | )
|                                                                                                                                                                |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |         |   |  |   |              |   |  |   |             |  
|Employee stock-based compensation expense                                                                                                                       |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   | 2,209,216   |   |  |   |        |   |  |   |        |   |  |   |             |   |  |   | 2,209,216   |  
|Nonemployee stock-based compensation expense                                                                                                                    |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   | 210,075     |   |  |   |        |   |  |   |        |   |  |   |             |   |  |   | 210,075     |  
|Issuance of common stock in private investment public equity offering in February 2009 for cash at $6.90 per share, net of
financing costs of $806,499          |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    | 2,185,066 |  |  |   | 21,851 |  |  |   | 14,248,602  |   |  |   |        |   |  |   |        |   |  |   |             |   |  |   | 14,270,453  |  
|Warrants issued for the purchase of 1,092,533 shares of common stock in February 2009 for cash at $0.72 per
warrant                                             |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   | 819,400     |   |  |   |        |   |  |   |        |   |  |   |             |   |  |   | 819,400     |  
|Issuance of common stock in registered direct offering in October 2009 for cash at $4.80 per share, net of financing costs of
$92,470                           |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    | 1,026,845 |  |  |   | 10,268 |  |  |   | 4,826,117   |   |  |   |        |   |  |   |        |   |  |   |             |   |  |   | 4,836,385   |  
|Common stock warrants reclassified to common stock warrant liability on January 1, 2009                                                                         |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   | (1,398,702  | ) |  |   |        |   |  |   |        |   |  |   | (130,968     | ) |  |   | (1,529,670  | )
|Cashless exercise of 159,420 warrants with an exercise price of $6.90 per share in exchange for 125,470 shares of common stock in
September 2009                |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    | 125,470   |  |  |   | 1,255  |  |  |   | 4,748,871   |   |  |   |        |   |  |   |        |   |  |   |             |   |  |   | 4,750,126   |  
|Cashless exercise of 104,700 warrants with exercise prices ranging from $6.90 to $23.64 per share in exchange for 62,244 shares
of common stock in October 2009 |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    | 62,244    |  |  |   | 622    |  |  |   | 494,030     |   |  |   |        |   |  |   |        |   |  |   |             |   |  |   | 494,652     |  
|Exercise of 13,450 common stock options in 2009 for cash from $2.76 to $22.20 per share                                                                         |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    | 13,450    |  |  |   | 134    |  |  |   | 37,383      |   |  |   |        |   |  |   |        |   |  |   |             |   |  |   | 37,517      |  
|Amortization of deferred compensation                                                                                                                           |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |  |                                     |  |   |                                              |  |  |                                    |          |  |  |   |       |  |  |   |            |   |  |   | 20,000  |   |  |   |        |   |  |   |             |   |  |   | 20,000      |  
|                                                                                                                                                                |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |         |   |  |   |              |   |  |   |             |  
|Balance, December 31, 2009                                                                                                                                      |  |                                    |  |  |                                    | $ |  |                                    |  |  |             |  |  | $                         |  |  |                      |  |  |                                     |  | $ |                                              |  |  |                                    | 6,229,731 |  |  | $ | 62,297 |  |  | $ | 138,888,080 |   |  | $ | (1,667  | ) |  | $ |        |   |  | $ | (133,367,600 | ) |  | $ | 5,581,110   |  
|                                                                                                                                                                |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |   |                                     |  |   |                                               |  |  |                                    |           |  |  |   |        |  |  |   |             |   |  |   |         |   |  |   |         |   |  |   |              |   |  |   |             |  

See accompanying notes to consolidated financial statements.



70



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##### Table of Contents

ENTEROMEDICS INC.

(A development stage company)

Consolidated Statements of Stockholders Equity (Deficit) (Continued)

Period from December 19, 2002 (inception) to December 31, 2010



|                                                                                                                                       |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |            |                                     |  |   |                                               |   |  |                                    |            |  |  |   |         |  |  |   |             |  |  |   |        |   |  |   |   |  |  |   |              |   |  |   |             |  
|-------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------- | - |  | ---------------------------------- | - | - | ---------------------------------- |  |  | ------------ |  |  | ------------------------- | - |  | -------------------- |  | ---------- | ----------------------------------- |  | - | --------------------------------------------- | - |  | ---------------------------------- | ---------- |  |  | - | ------- |  |  | - | ----------- |  |  | - | ------ | - |  | - | - |  |  | - | ------------ | - |  | - | ----------- | -
|                                                                                                                                       |  | Series CConvertiblePreferred Stock |   |  | Series BConvertiblePreferred Stock |   |   | Series AConvertiblePreferred Stock |  |  | Common Stock |  |  | AdditionalPaid-in
Capital |   |  | DeferredCompensation |  |            | AccumulatedOtherComprehensiveIncome |  |   | DeficitAccumulated
During theDevelopmentStage |   |  | TotalStockholders
Equity(Deficit) |           
|                                                                                                                                       |  | Shares                             |   |  | Amount                             |   |   | Shares                             |  |  | Amount       |  |  | Shares                    |   |  | Amount               |  |            | Shares                              |  |   | Amount                                        |   |  |                                    |            |  | 
|Balance, December 31, 2009                                                                                                             |  |                                    |  |  |                                    | $ |  |                                    |  |  |             |  |  | $                         |  |  |                      |  |           |                                     |  | $ |                                              |   |  |                                    | 6,229,731  |  |  | $ | 62,297  |  |  | $ | 138,888,080 |  |  | $ | (1,667 | ) |  | $ |  |  |  | $ | (133,367,600 | ) |  | $ | 5,581,110   |  
|Comprehensive loss:                                                                                                                    |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |            |                                     |  |   |                                               |   |  |                                    |            |  |  |   |         |  |  |   |             |  |  |   |        |   |  |   |   |  |  |   |              |   |  |   |             |  
|Net loss                                                                                                                               |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    |           |  |  |   |        |  |  |   |            |  |  |   |       |   |  |   |  |  |  |   | (17,347,387  | ) |  |   | (17,347,387 | )
|Change in unrealized gain (loss) on available for sale investments                                                                     |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    |           |  |  |   |        |  |  |   |            |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   |            |  
|                                                                                                                                       |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |            |                                     |  |   |                                               |   |  |                                    |            |  |  |   |         |  |  |   |             |  |  |   |        |   |  |   |   |  |  |   |              |   |  |   |             |  
|Total comprehensive loss                                                                                                               |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |            |                                     |  |   |                                               |   |  |                                    |            |  |  |   |         |  |  |   |             |  |  |   |        |   |  |   |   |  |  |   |              |   |  |   | (17,347,387 | )
|                                                                                                                                       |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |            |                                     |  |   |                                               |   |  |                                    |            |  |  |   |         |  |  |   |             |  |  |   |        |   |  |   |   |  |  |   |              |   |  |   |             |  
|Employee stock-based compensation expense                                                                                              |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    |           |  |  |   |        |  |  |   | 2,529,355   |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   | 2,529,355   |  
|Nonemployee stock-based compensation expense                                                                                           |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    |           |  |  |   |        |  |  |   | 33,204      |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   | 33,204      |  
|Issuance of common stock in registered direct offering in January 2010 for cash at $3.90 per share, net of financing costs of
$339,547 |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    | 1,239,717  |  |  |   | 12,398  |  |  |   | 4,482,949   |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   | 4,495,347   |  
|Common stock warrants reclassified to equity from common stock warrant liability on May 18, 2010                                       |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    |           |  |  |   |        |  |  |   | 312,751     |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   | 312,751     |  
|Warrants issued for the purchase of 150,642 shares of common stock in July 2010 valued at $1.92 per share for debt
modification        |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    |           |  |  |   |        |  |  |   | 289,257     |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   | 289,257     |  
|Adjustment for fractional shares upon reverse stock split                                                                              |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    | 45         |  |  |   |        |  |  |   |            |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   |            |  
|Issuance of Series A convertible preferred stock in September 2010 at $1.72 per share for cash, net of financing costs of
$60,679      |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  | 3,394,309  |                                     |  |   | 33,943                                        |   |  |                                    |           |  |  |   |        |  |  |   | 5,743,589   |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   | 5,777,532   |  
|Warrants issued for the purchase of 3,394,309 shares of common stock in September 2010 for cash at $0.125 per
warrant                  |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    |           |  |  |   |        |  |  |   | 424,289     |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   | 424,289     |  
|Issuance of common stock in public offering in December 2010 for cash at $1.74 per share, net of financing costs of
$2,198,865         |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    | 17,020,000 |  |  |   | 170,200 |  |  |   | 27,245,735  |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   | 27,415,935  |  
|Warrants issued for the purchase of 17,020,000 shares of common stock in December 2010 for cash at $0.01 per
warrant                   |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    |           |  |  |   |        |  |  |   | 170,200     |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   | 170,200     |  
|Warrants issued for the purchase of 340,400 shares of common stock in December 2010 for $100 cash                                      |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    |           |  |  |   |        |  |  |   | 100         |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   | 100         |  
|Conversion of Series A convertible preferred stock to common stock upon closing of the public offering in December
2010                |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  | (3,394,309 | )                                   |  |   | (33,943                                       | ) |  |                                    | 3,394,309  |  |  |   | 33,943  |  |  |   |            |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   |            |  
|Exercise of 8,586 common stock options in 2010 for cash at $2.76 per share                                                             |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    | 8,586      |  |  |   | 86      |  |  |   | 23,611      |  |  |   |       |   |  |   |  |  |  |   |             |   |  |   | 23,697      |  
|Amortization of deferred compensation                                                                                                  |  |                                    |  |  |                                    |   |  |                                    |  |  |             |  |  |                           |  |  |                      |  |           |                                     |  |   |                                              |   |  |                                    |           |  |  |   |        |  |  |   |            |  |  |   | 1,667  |   |  |   |  |  |  |   |             |   |  |   | 1,667       |  
|                                                                                                                                       |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |            |                                     |  |   |                                               |   |  |                                    |            |  |  |   |         |  |  |   |             |  |  |   |        |   |  |   |   |  |  |   |              |   |  |   |             |  
|Balance, December 31, 2010                                                                                                             |  |                                    |  |  |                                    | $ |  |                                    |  |  |             |  |  | $                         |  |  |                      |  |           |                                     |  | $ |                                              |   |  |                                    | 27,892,388 |  |  | $ | 278,924 |  |  | $ | 180,143,120 |  |  | $ |       |   |  | $ |  |  |  | $ | (150,714,987 | ) |  | $ | 29,707,057  |  
|                                                                                                                                       |  |                                    |   |  |                                    |   |   |                                    |  |  |              |  |  |                           |   |  |                      |  |            |                                     |  |   |                                               |   |  |                                    |            |  |  |   |         |  |  |   |             |  |  |   |        |   |  |   |   |  |  |   |              |   |  |   |             |  

See accompanying notes to consolidated financial statements.



71



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##### Table of Contents

ENTEROMEDICS INC.

(A development stage company)

Consolidated Statements of Cash Flows



|                                                                                                                                                              |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------ | ----------- | - | ---------------------------------------------------------- | - | ----------- | ---- |  | - | ----------- | - |  | - | ------------ | -
|                                                                                                                                                              |  | Years ended December 31, |             |   | Period
fromDecember 19,2002(inception) 
toDecember 31,2010 |  
|                                                                                                                                                              |  | 2010                     |             |   | 2009                                                       |   |             | 2008 |  |  
|Cash flows from operating activities:                                                                                                                         |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Net loss                                                                                                                                                      |  | $                        | (17,347,387 | ) |                                                            | $ | (31,929,200 | )    |  | $ | (37,874,028 | ) |  | $ | (150,584,019 | )
|Adjustments to reconcile net loss to net cash used in operating activities:                                                                                   |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Depreciation                                                                                                                                                  |  |                          | 375,756     |   |                                                            |   | 424,354     |      |  |   | 513,060     |   |  |   | 1,956,066    |  
|Loss on sale of equipment                                                                                                                                     |  |                          | 52,622      |   |                                                            |   | 4,651       |      |  |   | 5,313       |   |  |   | 72,858       |  
|Employee stock-based compensation                                                                                                                             |  |                          | 2,529,355   |   |                                                            |   | 2,209,216   |      |  |   | 2,648,410   |   |  |   | 8,317,770    |  
|Nonemployee stock-based compensation                                                                                                                          |  |                          | 34,871      |   |                                                            |   | 230,075     |      |  |   | (127,855    | ) |  |   | 3,252,700    |  
|Amortization of commitment fees, debt issuance costs and original issue discount                                                                              |  |                          | 387,861     |   |                                                            |   | 1,490,940   |      |  |   | 654,333     |   |  |   | 3,651,883    |  
|Amortization of short-term investment discount                                                                                                                |  |                          |            |   |                                                            |   | 904         |      |  |   | (3,679      | ) |  |   | (308,051     | )
|Change in value of warrant liability                                                                                                                          |  |                          | (158,834    | ) |                                                            |   | 3,644,549   |      |  |   |            |   |  |   | 3,840,622    |  
|Change in operating assets and liabilities:                                                                                                                   |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Interest receivable                                                                                                                                           |  |                          |            |   |                                                            |   | 57,965      |      |  |   | (4,788      | ) |  |   |             |  
|Other receivables                                                                                                                                             |  |                          | 10,007      |   |                                                            |   | 9,301       |      |  |   | 23,827      |   |  |   |             |  
|Prepaid expenses and other current assets                                                                                                                     |  |                          | 37,798      |   |                                                            |   | (52,519     | )    |  |   | 4,901       |   |  |   | (436,538     | )
|Other assets                                                                                                                                                  |  |                          | (60,348     | ) |                                                            |   |            |      |  |   | 5,000       |   |  |   | (60,348      | )
|Accounts payable                                                                                                                                              |  |                          | (109,950    | ) |                                                            |   | (73,709     | )    |  |   | (183,034    | ) |  |   | (66,351      | )
|Accrued expenses                                                                                                                                              |  |                          | 460,455     |   |                                                            |   | (784,186    | )    |  |   | 492,058     |   |  |   | 2,538,371    |  
|Accrued interest payable                                                                                                                                      |  |                          | 123,187     |   |                                                            |   | 110,436     |      |  |   | 177,869     |   |  |   | 577,314      |  
|                                                                                                                                                              |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Net cash used in operating activities                                                                                                                         |  |                          | (13,664,607 | ) |                                                            |   | (24,657,223 | )    |  |   | (33,668,613 | ) |  |   | (127,247,723 | )
|                                                                                                                                                              |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Cash flows from investing activities:                                                                                                                         |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Increase in restricted cash                                                                                                                                   |  |                          | (6,527,031  | ) |                                                            |   |            |      |  |   |            |   |  |   | (6,527,031   | )
|Purchases of short-term investments available for sale                                                                                                        |  |                          |            |   |                                                            |   |            |      |  |   | (9,127,233  | ) |  |   | (14,882,233  | )
|Maturities of short-term investments available for sale                                                                                                       |  |                          |            |   |                                                            |   | 5,226,000   |      |  |   | 8,938,414   |   |  |   | 14,854,414   |  
|Purchases of short-term investments held to maturity                                                                                                          |  |                          |            |   |                                                            |   |            |      |  |   | (1,185,838  | ) |  |   | (22,414,130  | )
|Maturities of short-term investments held to maturity                                                                                                         |  |                          |            |   |                                                            |   |            |      |  |   | 4,450,000   |   |  |   | 22,750,000   |  
|Purchases of property and equipment                                                                                                                           |  |                          | (2,592      | ) |                                                            |   | (186,981    | )    |  |   | (244,439    | ) |  |   | (2,578,948   | )
|                                                                                                                                                              |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Net cash (used in) provided by investing activities                                                                                                           |  |                          | (6,529,623  | ) |                                                            |   | 5,039,019   |      |  |   | 2,830,904   |   |  |   | (8,797,928   | )
|                                                                                                                                                              |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Cash flows from financing activities:                                                                                                                         |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Proceeds from stock options exercised                                                                                                                         |  |                          | 23,697      |   |                                                            |   | 37,517      |      |  |   | 65,407      |   |  |   | 200,854      |  
|Proceeds from warrants issued                                                                                                                                 |  |                          | 594,589     |   |                                                            |   | 819,400     |      |  |   |            |   |  |   | 1,429,646    |  
|Proceeds from warrants exercised                                                                                                                              |  |                          |            |   |                                                            |   |            |      |  |   |            |   |  |   | 187,652      |  
|Proceeds from sale of common stock, net of underwriting fees of $3,074,315                                                                                    |  |                          |            |   |                                                            |   |            |      |  |   |            |   |  |   | 40,874,977   |  
|Proceeds from sale of common stock in private placement, registered direct and public offerings                                                               |  |                          | 34,449,694  |   |                                                            |   | 20,005,807  |      |  |   |            |   |  |   | 54,455,501   |  
|Common stock financing costs                                                                                                                                  |  |                          | (2,538,412  | ) |                                                            |   | (898,969    | )    |  |   |            |   |  |   | (5,190,044   | )
|Payment to shareholders for fractional shares upon reverse stock split                                                                                        |  |                          |            |   |                                                            |   |            |      |  |   |            |   |  |   | (355         | )
|Proceeds from sale of Series A, B and C convertible preferred stock                                                                                           |  |                          | 5,838,211   |   |                                                            |   |            |      |  |   |            |   |  |   | 63,766,564   |  
|Series A, B and C convertible preferred stock financing costs                                                                                                 |  |                          | (60,679     | ) |                                                            |   |            |      |  |   |            |   |  |   | (1,658,662   | )
|Proceeds from convertible notes payable                                                                                                                       |  |                          |            |   |                                                            |   |            |      |  |   |            |   |  |   | 6,814,846    |  
|Proceeds from notes payable                                                                                                                                   |  |                          |            |   |                                                            |   | 5,000,000   |      |  |   | 15,000,000  |   |  |   | 35,831,121   |  
|Repayments on notes payable                                                                                                                                   |  |                          | (1,889,904  | ) |                                                            |   | (11,783,065 | )    |  |   | (11,674,658 | ) |  |   | (29,504,090  | )
|Debt issuance costs                                                                                                                                           |  |                          |            |   |                                                            |   |            |      |  |   | (230,241    | ) |  |   | (321,799     | )
|                                                                                                                                                              |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Net cash provided by financing activities                                                                                                                     |  |                          | 36,417,196  |   |                                                            |   | 13,180,690  |      |  |   | 3,160,508   |   |  |   | 166,886,211  |  
|                                                                                                                                                              |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Net increase (decrease) in cash and cash equivalents                                                                                                          |  |                          | 16,222,966  |   |                                                            |   | (6,437,514  | )    |  |   | (27,677,201 | ) |  |   | 30,840,560   |  
|Cash and cash equivalents:                                                                                                                                    |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Beginning of period                                                                                                                                           |  |                          | 14,617,594  |   |                                                            |   | 21,055,108  |      |  |   | 48,732,309  |   |  |   |             |  
|                                                                                                                                                              |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|End of period                                                                                                                                                 |  | $                        | 30,840,560  |   |                                                            | $ | 14,617,594  |      |  | $ | 21,055,108  |   |  | $ | 30,840,560   |  
|                                                                                                                                                              |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Supplemental disclosure:                                                                                                                                      |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Interest paid                                                                                                                                                 |  | $                        | 738,794     |   |                                                            | $ | 2,502,924   |      |  | $ | 1,826,674   |   |  | $ | 6,602,149    |  
|Noncash investing and financing activities:                                                                                                                   |  |                          |             |   |                                                            |   |             |      |  |   |             |   |  |   |              |  
|Cancellation of Alpha Medical, Inc. Series A convertible preferred stock and common stock                                                                     |  | $                        |            |   |                                                            | $ |            |      |  | $ |            |   |  | $ | (661,674     | )
|Issuance of Beta Medical, Inc. Series A convertible preferred stock in exchange for Alpha Medical, Inc. Series A convertible
preferred stock and common stock |  |                          |            |   |                                                            |   |            |      |  |   |            |   |  |   | 661,674      |  
|Value of warrants issued with debt                                                                                                                            |  |                          | 289,257     |   |                                                            |   | 542,144     |      |  |   | 1,398,702   |   |  |   | 3,196,933    |  
|Value of warrants issued for debt commitment                                                                                                                  |  |                          |            |   |                                                            |   |            |      |  |   |            |   |  |   | 636,250      |  
|Value of warrants issued with Series C financing                                                                                                              |  |                          |            |   |                                                            |   |            |      |  |   |            |   |  |   | 735,438      |  
|Value of warrants issued with private placement, registered direct and public offerings                                                                       |  |                          | 794,869     |   |                                                            |   | 154,525     |      |  |   |            |   |  |   | 949,394      |  
|Cashless exercise of warrants                                                                                                                                 |  |                          |            |   |                                                            |   | 5,244,778   |      |  |   |            |   |  |   | 5,244,778    |  
|Conversion of notes and interest payable to Series B and C convertible preferred shares                                                                       |  |                          |            |   |                                                            |   |            |      |  |   |            |   |  |   | 6,980,668    |  
|Options issued for deferred compensation                                                                                                                      |  |                          |            |   |                                                            |   |            |      |  |   |            |   |  |   | 10,898       |  
|Common stock issued to Mayo Foundation and for deferred compensation                                                                                          |  |                          |            |   |                                                            |   |            |      |  |   |            |   |  |   | 1,770,904    |  
|Reclassification of warrant liability                                                                                                                         |  |                          | 312,751     |   |                                                            |   | 1,529,670   |      |  |   |            |   |  |   | 2,932,766    |  
|Conversion of convertible preferred stock to common stock                                                                                                     |  |                          | 33,943      |   |                                                            |   |            |      |  |   |            |   |  |   | 51,132       |  

See accompanying notes
to consolidated financial statements.



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements



|(1) | Formation and Business of the Company
|--- | -------------------------------------

EnteroMedics Inc. (EnteroMedics or the Company) is developing implantable systems to treat obesity and other gastrointestinal disorders. The Company was incorporated in the state of Minnesota on
December 19, 2002, originally as two separate legal entities, Alpha Medical, Inc. and Beta Medical, Inc., both of which were owned 100% by a common stockholder. Effective October 1, 2003, the two entities were combined and the combined
entity changed its name to EnteroMedics Inc. The Company reincorporated in Delaware on July 22, 2004. The Company is in the development stage and since inception has devoted substantially all of its resources to recruiting personnel, developing
its product technology, obtaining patents to protect its intellectual property and raising capital, and has not derived revenues from its primary business activity. Accordingly, the Company is in the development stage, as defined by the Accounting
Standards Codification. The Company is headquartered in St. Paul, Minnesota.

EnteroMedics Europe Sárl
(EnteroMedics Europe), a wholly owned subsidiary of the Company, was formed in January 2006. EnteroMedics Europe is a Swiss entity established as a means to conduct clinical trials in Switzerland. Upon establishment there were 20 shares of
EnteroMedics Europe issued and outstanding with a par value of 1,000 Swiss Francs. EnteroMedics purchased 100% of the shares and then issued one share to a fiduciary agent. The one share is the property of EnteroMedics and is held by the fiduciary
in a fiduciary capacity under terms of the Fiduciary Agreement. The functional currency of EnteroMedics Europe has been determined to be the U.S. Dollar.

In November 2007, the Company effected a 1-for-9.1 reverse split of its common stock and convertible preferred stock which has been retroactively applied to these consolidated financial statements. Also,
in November 2007, the Company completed its initial public offering of common stock (IPO), issuing a total of 914,975 shares for net proceeds of approximately $39.1 million after expenses and underwriters discounts and commissions, and
including the exercise of the underwriters over-allotment option.

The Companys board of directors and
stockholders approved a 1-for-6 reverse split of the Companys outstanding common stock that became effective on July 9, 2010. The reverse stock split did not change the par value of the Companys stock or the number of common and
preferred shares authorized by the Companys Fifth Amended and Restated Certificate of Incorporation. All share and per share amounts have been retroactively adjusted to reflect the stock split for all periods presented.

Since inception, EnteroMedics has incurred losses through December 31, 2010 totaling approximately $150.6 million and has not
generated positive cash flows from operations. The Company expects such losses to continue into the foreseeable future as it continues to develop and commercialize its technologies. The Company may need to obtain additional financing and there can
be no assurance that the Company will be successful in obtaining additional financing on favorable terms, or at all. If adequate funds are not available, the Company may have to delay development or commercialization of products or license to third
parties the rights to commercialize products or technologies that the Company would otherwise seek to commercialize.



|(2) | Summary of Significant Accounting Policies
|--- | ------------------------------------------

Basis of Presentation

The Company has prepared the accompanying
consolidated financial statements in conformity with accounting principles generally accepted in the United States of America. The Companys fiscal year ends on December 31.



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America
requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiary. All intercompany transactions and accounts have been eliminated in consolidation.

Concentration of Credit Risk and Other Risks and Uncertainties

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash and cash
equivalents, restricted cash and short-term investments. Cash and cash equivalents and restricted cash are primarily deposited in demand and money market accounts. At times, such deposits may be in excess of insured limits. Investments in money
market funds are not considered to be bank deposits and are not insured or guaranteed by the federal deposit insurance company or other government agency. These money market funds seek to preserve the value of the investment at $1.00 per share;
however, it is possible to lose money investing in these funds. The Company has not experienced any losses on its deposits of cash and cash equivalents or restricted cash.

Most of the products developed by the Company will require approval from the U.S. Food and Drug Administration (FDA) or corresponding foreign regulatory agencies prior to commercial sales. There can
be no assurance the Companys products will receive the necessary approvals. If the Company is denied approval or approval is delayed, it will have a material adverse impact on the Company.

The medical device industry is characterized by frequent and extensive litigation and administrative proceedings over patent and other
intellectual property rights. Whether a product infringes a patent involves complex legal and factual issues, the determination of which is often difficult to predict, and the outcome may be uncertain until the court has entered final judgment and
all appeals are exhausted. The Companys competitors may assert that its products or the use of the Companys products are covered by U.S. or foreign patents held by them.

Fair Value of Financial Instruments

Carrying amounts of certain of the Companys financial instruments, including cash and cash equivalents, restricted cash, prepaid expenses and other current assets, accounts payable and accrued
liabilities approximate fair value due to their short maturities. The fair values of investments in debt and equity securities are disclosed in Note 3. The fair value of the Companys long-term debt is approximately $6.4 million as of
December 31, 2010 based on the present value of estimated future cash flows using a discount rate commensurate with borrowing rates available to the Company.

Cash and Cash Equivalents

The Company considers highly liquid
investments generally with maturities of 90 days or less when purchased to be cash equivalents. Cash equivalents are stated at cost, which approximates market value. The Companys cash equivalents are primarily in money market funds, commercial
paper and certificates of deposit.



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



The Company deposits its cash and cash equivalents in high-quality credit institutions. Under terms of the Companys notes payable agreements (see Note 6), in the event of default, the
lender has the right to enforce account control agreements and restrict the Companys access to their cash and investment accounts.

Restricted Cash

The Company has $6.5 million in a cash collateral
money market account as of December 31, 2010. $6.3 million of the balance was established per the terms of the Third Amendment to the Loan Agreement with Silicon Valley Bank dated November 12, 2010, which requires the Company to have an
amount equal to the principal balance outstanding in the restricted account. The restricted cash balance will be reduced as principal payments are made (see Note 6).

Pursuant to the Lease Agreement the Company entered into with Roseville Properties Management Company in July 2008, the Company was required to deliver to Roseville Properties an irrevocable,
unconditional, standby letter of credit in the amount of $200,000 on the second anniversary of the commencement of lease payments. The standby letter of credit is to be maintained through October 1, 2013. The irrevocable standby letter of
credit was issued by Silicon Valley Bank, who required the Company to set up a restricted cash collateral money market account to fully secure the standby letter of credit.

Short-Term Investments

The Company considers all investments with
maturities greater than three months and less than one year at the time of purchase as short-term investments and classifies them as either available for sale or held to maturity. The Company also considers certain investments with maturities
greater than one year but which are also held for liquidity purposes and are available for sale as short-term investments.

Available-for-sale securities are carried at fair value based on quoted market prices, with the unrealized gains and losses included in
other comprehensive income within stockholders equity (deficit) in the consolidated balance sheets. Realized gains and losses and declines in value judged to be other than temporary on available-for-sale securities are included in interest and
other income. Interest and dividends on securities classified as available for sale are included in interest income. The cost of securities sold is based on the specific identification method.

Short-term investments in debt securities which the Company has the positive intent and ability to hold to maturity are reported at cost,
adjusted for premiums and discounts that are recognized in interest income, using the interest method, over the period to maturity. Unrealized losses on held-to-maturity securities reflecting a decline in value determined to be other than temporary
are charged to income.

Property and Equipment, Net

Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation of property and equipment is
computed using the straight-line method over their estimated useful lives of three to seven years. Leasehold improvements are amortized on a straight-line basis over the lesser of their useful life or the term of the lease. Upon retirement or sale,
the cost and related accumulated depreciation are removed from the consolidated balance sheets and the resulting gain or loss is reflected in the consolidated statements of operations. Repairs and maintenance are expensed as incurred.



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



Impairment of Long-Lived Assets

The Company evaluates its long-lived assets for impairment by comparison of the carrying amounts to future net undiscounted cash flows
expected to be generated by such assets when events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. Should an impairment exist, the impairment loss would be measured based on the excess carrying value of
the asset over the assets fair value or estimates of future discounted cash flows. The Company has not identified any such impairment losses to date.

Income Taxes

Income taxes are accounted for under the asset and
liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and
operating loss and tax credit carry-forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The
effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance for deferred income tax assets is recorded when it is more likely than not that some
portion or all of the deferred income tax assets will not be realized. The Company has provided a full valuation allowance against the gross deferred tax assets as of December 31, 2010 and 2009 (see Note 9). The Companys policy is to
classify interest and penalties related to income taxes as income tax expense in the consolidated statements of operations.

Comprehensive Loss

Comprehensive loss is defined as the change in equity of a company during a period from transactions and other events and circumstances excluding transactions resulting from investment owners and
distributions to owners. There was no difference from reported net loss for the year ended December 31, 2010. The difference from reported net loss for the year ended December 31, 2009 related entirely to the maturity of short-term
investments and the realization of net unrealized gains on those short-term investments. The difference from reported net loss for the year ended December 31, 2008 related entirely to net unrealized gains on short-term investments.

Research and Development Expenses

Research and development expenses are charged to expense as incurred. Research and development expenses include, but are not limited to, product development, clinical and regulatory expenses, payroll and
other personnel expenses, materials, supplies and consulting costs. For the year ended December 31, 2010, research and development expenses were reduced by $244,479 as a result of the Company applying for and receiving a government grant under
the Therapeutic Discovery Project Credit program, which was a program established by the Healthcare Reform Law enacted March 23, 2010.

Patent Costs

Costs associated with the submission of a patent
application are expensed as incurred given the uncertainty of the patents resulting in probable future economic benefits to the Company. Patent-related legal expenses included in general and administrative costs were $306,181, $231,291 and $346,119
for the years ended December 31, 2010, 2009 and 2008, respectively, and $1,893,177 for the period from December 19, 2002 (inception) to December 31, 2010.



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



Derivative Instruments

The Company accounts for outstanding warrants that are not indexed to the Companys stock or warrants issued when the Company has
insufficient authorized and unissued stock available to share settle the outstanding warrants as derivative instruments, which require that the warrants be classified as a liability and measured at fair value with changes in fair value recognized
currently in earnings and recorded separately in the consolidated statements of operations.

On July 6, 2006, the Company
issued 24,605 Series C warrants upon closing the Series C convertible preferred stock financing with a fair value of $735,438 calculated using a Black-Scholes valuation model and the following assumptions: volatility of 55%, dividend rate of 0%,
risk-free interest rate of 5.18%, and the maximum seven-year warrant life. In December 2006, the Company had insufficient authorized and unissued Series C stock available to share settle the outstanding Series C warrants which required the warrants
to be classified as a liability. The fair market value of the warrants as of December 31, 2006 was $728,841. On May 14, 2007 the Company filed an amended certificate of incorporation to increase the number of authorized shares of Series C
stock, resulting in sufficient authorized and unissued shares of Series C stock available to share settle the Series C warrants. The fair market value of the warrants on May 14, 2007 was determined to be $1,090,345. The change in fair value
from December 31, 2006 to the amendment date of $361,504 was recorded as expense and the warrant liability was reclassified to additional paid-in capital.

Effective January 1, 2009, the Company adopted new authoritative accounting guidance regarding the financial reporting for outstanding equity-linked financial instruments. As a result of this change
in accounting guidance, the Company assessed any outstanding equity-linked financial instruments and concluded that warrants issued in November 2008 with a recorded value of $1.4 million on December 31, 2008 were to be reclassified from equity
to a liability. The cumulative effect of the change in accounting principle on January 1, 2009 was a $130,968 increase to the deficit accumulated during development stage. See Note 6 for details regarding the change in fair value of the warrant
liability during the year ended December 31, 2009.

Stock-Based Compensation

Prior to January 1, 2006, the Company accounted for stock-based employee compensation using the intrinsic value method and recognized
the expense over the option vesting period. The intrinsic value method is calculated as the difference, if any, between the fair value of the Companys stock and the exercise price on the date of the grant. The Company also followed the minimum
value disclosure provisions.

Effective January 1, 2006, the Company adopted the fair value method of accounting for
share-based payments, which superseded the previous accounting method, and requires compensation expense to be recognized using a fair-value-based method for costs related to all share-based payments including stock options. Companies are required
to estimate the fair value of share-based payment awards on the date of grant using an option-pricing model. The Company adopted the new provisions using the prospective transition method, which requires that for nonpublic entities that used the
minimum value method for either pro forma or financial statement recognition purposes, to apply the new accounting provisions only to option grants or modifications to existing options that occur after the required effective date. For options
granted prior to January 1, 2006, the Company has continued to apply the intrinsic value provisions on any remaining unvested awards. All option grants valued after January 1, 2006 are expensed on a straight-line basis over the vesting
period.

The fair value method is applied to all share-based payment awards issued to employees and where appropriate,
nonemployees, unless another source of literature applies. When determining the measurement date



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



of a nonemployees share-based payment award, the Company measures the stock options at fair value and remeasures such stock options to the current fair value until the performance date has
been reached.

Net Loss Per Share

Basic net loss per share is computed by dividing net loss by the weighted-average number of common shares outstanding during the period. Diluted net loss per share is based on the weighted-average common
shares outstanding during the period plus dilutive potential common shares calculated using the treasury stock method. Such potentially dilutive shares are excluded when the effect would be to reduce a net loss per share. The Companys
potential dilutive shares, which include outstanding common stock options, unvested common shares subject to repurchase and warrants, have not been included in the computation of diluted net loss per share for all periods as the result would be
anti-dilutive.

The following table sets forth the computation of basic and diluted net loss per share for the years ended
December 31, 2010 , 2009 and 2008:



|                                                              |  |                         |             |   |      |   |             |      |  |   |             |  
|------------------------------------------------------------- |  | ----------------------- | ----------- | - | ---- | - | ----------- | ---- |  | - | ----------- | -
|                                                              |  | Years
endedDecember 31, |            
|                                                              |  | 2010                    |             |   | 2009 |   |             | 2008 | 
|Numerator:                                                    |  |                         |             |   |      |   |             |      |  |   |             |  
|Net loss                                                      |  | $                       | (17,347,387 | ) |      | $ | (31,929,200 | )    |  | $ | (37,874,028 | )
|                                                              |  |                         |             |   |      |   |             |      |  |   |             |  
|Denominator for basic and diluted net loss per share:         |  |                         |             |   |      |   |             |      |  |   |             |  
|Weighted-average common shares outstanding                    |  |                         | 8,419,575   |   |      |   | 4,974,326   |      |  |   | 2,805,944   |  
|Weighted-average unvested common shares subject to repurchase |  |                         |            |   |      |   |            |      |  |   |            |  
|                                                              |  |                         |             |   |      |   |             |      |  |   |             |  
|Denominator for net loss per common sharebasic and diluted   |  |                         | 8,419,575   |   |      |   | 4,974,326   |      |  |   | 2,805,944   |  
|                                                              |  |                         |             |   |      |   |             |      |  |   |             |  
|Net loss per sharebasic and diluted                          |  | $                       | (2.06       | ) |      | $ | (6.42       | )    |  | $ | (13.50      | )
|                                                              |  |                         |             |   |      |   |             |      |  |   |             |  

The following table sets forth the potential shares of common stock that are not included in the calculation
of diluted net loss per share because to do so would be anti-dilutive as of the end of each period presented:



|                                  |      |              |            |      |  |  |           |  |  |  |         | 
|--------------------------------- | ---- | ------------ | ---------- | ---- |  |  | --------- |  |  |  | ------- | 
|                                  |      | December 31, |           
|                                  | 2010 |              |            | 2009 |  |  | 2008      | 
|Stock options outstanding         |      |              | 812,515    |      |  |  | 995,562   |  |  |  | 466,090 | 
|Warrants to purchase common stock |      |              | 22,224,718 |      |  |  | 1,332,335 |  |  |  | 293,178 | 

Recently Issued
Accounting Standards

There have been no significant changes in recent accounting pronouncements during the fiscal year
ended December 31, 2010.



|(3) | Short-term Investments and Fair Value Measurements
|--- | --------------------------------------------------

Effective January 1, 2008, the Company adopted fair value measurement and disclosure provisions for its financial assets and liabilities as described below.



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



Fair value of financial assets and liabilities is defined as the price that would be
received to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. A fair value hierarchy has been established that prioritizes the inputs to valuation techniques used to measure fair
value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the
fair value hierarchy are described below:



| |  |  | Level 1Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Level 2Quoted prices for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not
active or model-derived valuations for which all significant inputs are observable, either directly or indirectly.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Level 3Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------

The Companys assets that are measured at fair value on a recurring basis are classified within Level
1 or Level 2 of the fair value hierarchy. The Company does not hold any assets that are measured at fair value using Level 3 inputs. The types of instruments the Company invests in that are valued based on quoted market prices in active markets
include U.S. treasury securities. Such instruments are classified by the Company within Level 1 of the fair value hierarchy. U.S. treasuries are valued using unadjusted quoted prices for identical assets in active markets that the Company can
access.

The types of instruments the Company invests in that are valued based on quoted prices in less active markets, broker
or dealer quotations, or alternative pricing sources with reasonable levels of price transparency include the Companys U.S. agency securities, commercial paper, U.S. corporate bonds and municipal obligations. Such instruments are classified by
the Company within Level 2 of the fair value hierarchy. The Company values these types of assets using consensus pricing or a weighted average price, which is based on multiple pricing sources received from a variety of industry standard data
providers (e.g. Bloomberg), security master files from large financial institutions, and other third-party sources. The multiple prices obtained are then used as inputs in to a distribution-curve-based algorithm to determine the daily market price.

In addition, the Company recorded a financial liability in 2010 and 2009 related to warrants outstanding, which is fair
valued using Level 3 inputs (see Note 6).

The Company did not hold any short-term investments classified as available for
sale or held to maturity as of December 31, 2010 and 2009.



|(4) | Property and Equipment
|--- | ----------------------

Property and equipment consist of the following as of:



|                                               |  |              |            |   |      |   |            |  
|---------------------------------------------- |  | ------------ | ---------- | - | ---- | - | ---------- | -
|                                               |  | December 31, |           
|                                               |  | 2010         |            |   | 2009 |  
|Furniture and equipment                        |  | $            | 1,844,267  |   |      | $ | 1,713,162  |  
|Computer hardware and software                 |  |              | 439,546    |   |      |   | 468,289    |  
|Leasehold improvements                         |  |              | 32,258     |   |      |   | 32,258     |  
|                                               |  |              |            |   |      |   |            |  
|                                               |  |              | 2,316,071  |   |      |   | 2,213,709  |  
|Less accumulated depreciation and amortization |  |              | (1,574,507 | ) |      |   | (1,247,880 | )
|                                               |  |              |            |   |      |   |            |  
|Property and equipment, net                    |  | $            | 741,564    |   |      | $ | 965,829    |  
|                                               |  |              |            |   |      |   |            |  



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



Depreciation expense included in the consolidated statements of operations was $375,756,
$424,354 and $513,060 for the years ended December 31, 2010, 2009 and 2008, respectively, and $1,956,066 for the period from December 19, 2002 (inception) to December 31, 2010.



|(5) | Accrued expenses
|--- | ----------------

Accrued
expenses consist of the following as of:



|                                      |  |              |           |  |      |   |           | 
|------------------------------------- |  | ------------ | --------- |  | ---- | - | --------- | 
|                                      |  | December 31, |          
|                                      |  | 2010         |           |  | 2009 |  
|Professional service related expenses |  | $            | 1,018,504 |  |      | $ | 1,419,576 | 
|Payroll related expenses              |  |              | 1,091,978 |  |      |   | 423,377   | 
|Other expenses                        |  |              | 427,889   |  |      |   | 234,963   | 
|                                      |  |              |           |  |      |   |           | 
|Accrued expenses                      |  | $            | 2,538,371 |  |      | $ | 2,077,916 | 
|                                      |  |              |           |  |      |   |           | 



|(6) | Notes payable
|--- | -------------

Notes
payable consists of the following as of:



|                                                                                                                                |  |              |           |   |      |   |            |  
|------------------------------------------------------------------------------------------------------------------------------- |  | ------------ | --------- | - | ---- | - | ---------- | -
|                                                                                                                                |  | December 31, |          
|                                                                                                                                |  | 2010         |           |   | 2009 |  
|Growth capital loan dated November 18, 2008 (net discount of $421,874 and $455,469 at December 31, 2010 and 2009,
respectively) |  | $            | 5,905,157 |   |      | $ | 7,761,466  |  
|Less current portion                                                                                                            |  |              | (921,998  | ) |      |   | (3,880,656 | )
|                                                                                                                                |  |              |           |   |      |   |            |  
|Total long-term debt                                                                                                            |  | $            | 4,983,159 |   |      | $ | 3,880,810  |  
|                                                                                                                                |  |              |           |   |      |   |            |  

May 17, 2007 Debt Facility with Western Technology Investment

On May 17, 2007 the Company entered into a $15.0 million debt facility with Western Technology Investment (WTI) of which $5.0 million
was drawn on May 22, 2007, $2.5 million was drawn on August 31, 2007 and $2.5 million was drawn on October 31, 2007. Each loan consisted of interest only payments for the first six months, except for the October 31, 2007 draw
which was for the first four months, at an annual percentage rate of 12.48%, followed by 30 equal principal and interest installments at an annual percentage rate of 10.25%. Each loan included a final payment of 3.1% of the amount funded.

On November 21, 2008, the Company had outstanding $7,702,641 (principal of $6,939,610 and interest of $763,031) in total
payments and $255,232 of unamortized discount on notes payable with WTI. Proceeds from a new debt agreement, discussed below, were used to repay all outstanding indebtedness under the previous WTI loan agreements, resulting in the one-time interest
payment of $763,031 and the acceleration of $255,232 of unamortized discount on notes payable, both recorded as interest expense in 2008.

Warrants Issued

Upon the closing of the initial commitment, the Company
issued 11,326 Series C stock warrants with an exercise price of $48.56 per share and a seven year life. In accordance with the agreement, upon the closing of the IPO, the warrants were converted into warrants to purchase common stock, with all other
terms unchanged.



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EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



In conjunction with the three growth capital loan draws between May and October 2007,
the Company issued a total of 11,324 Series C stock warrants at an exercise price of $48.56 per share and a seven year life. The combined fair value of the warrants issued was determined to be $673,768 and is recorded as interest expense over the
term of the loan, with $286,319 recorded as interest expense in 2008. This fair value was calculated using a Black-Scholes valuation model and the following assumptions: volatility between 50.3% and 55.5%, dividend rate of 0%, risk-free interest
rate between 4.47% and 4.83% and a seven year life. In accordance with the agreement, upon the closing of the IPO, the warrants were converted into warrants to purchase common stock, with all other terms unchanged.

November 18, 2008 Debt Facility with Silicon Valley Bank, Venture Lending & Leasing V, Inc. and Compass Horizon
Funding Company LLC

On November 18, 2008 the Company entered into a new Loan and Security Agreement (the Loan
Agreement) with Silicon Valley Bank (SVB), Venture Lending & Leasing V, Inc. (a private equity fund under the management of WTI) and Compass Horizon Funding Company LLC (Horizon and, collectively with SVB and WTI, the Lenders), in an
aggregate principal amount of up to $20.0 million. On November 21, 2008, SVB and WTI each funded a Term Loan in the aggregate principal amount of $10.0 million and $5.0 million, respectively. The additional $5.0 million Term Loan was
automatically funded by Horizon on April 28, 2009 when the trading price of the Companys common stock on the NASDAQ Global Market exceeded a target amount specified in the Loan Agreement.

Interest-only payments were required on the Term Loans during a period beginning on the Term Loan funding date and continuing through
June 30, 2009, followed thereafter by equal monthly payments of principal and interest over the remaining term of the Term Loan. Amounts borrowed under the Loan Agreement had an annual interest rate equal to 12.0% during the period of
interest-only payments, and thereafter, at a rate of 11.0% per annum for the remainder of the term. Per the Loan Agreement, the Company is also required to make a final payment in an aggregate amount equal to 5.0% of the Term Loans funded by
the Lenders (the Final Payment Fee). The Company may voluntarily prepay the Term Loans in full, but not in part and any voluntary or mandatory prepayment is subject to applicable prepayment premiums. The Company will also be required to pay the
Final Payment Fee in connection with any voluntary or mandatory prepayment.

The debt financing is collateralized by a first
security priority lien on all of the Companys assets, excluding intellectual property. The Company has entered into account control agreements in order to perfect the Lenders first security interest in the Companys cash and
investment accounts. In the event the Company has less than five remaining months of liquidity, the Company is required to grant a temporary lien on its intellectual property. The number of remaining months of liquidity is calculated by dividing
cash and cash equivalents as of the end of any particular month by the sum of the Companys total operating expenses for each of the immediately preceding five months. The debt financing agreement also required the Company to both maintain a
cash and cash equivalents balance that exceeds the outstanding principal balance and secure aggregate net proceeds of at least $20.0 million by January 9, 2010 from new capital transactions, of which $10.0 million was required by June 30,
2009. The financial and capital covenants may change upon the achievement of certain milestones defined in the debt financing agreement.

On December 1, 2009 the Company voluntarily prepaid both the WTI and Horizon Term Loans in full, or $9,100,468 (principal of $8,522,346, interest accrued and not yet paid of $78,122 and the 5.0%
Final Payment Fee of $500,000). The prepayment of the Term Loans also resulted in the acceleration of $601,505 of unamortized discount on notes payable, recorded as interest expense in 2009. Both WTI and Horizon released their right to future
interest when the Term Loans were paid in full.



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EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



Warrants Issued

The Loan Agreement required the issuance of warrants to the Lenders with an aggregate exercise price equal to 11.0% of the loan
commitment. The warrants give the Lenders the option to purchase either (i) shares of the Companys common stock with a per share exercise price equal to $9.51, or (ii) shares of the Companys stock (including common stock)
issued in an equity financing that occurs within 18 months after November 18, 2008 at the per share price of the stock sold in the financing. On November 18, 2008 (i) SVB was issued a warrant to purchase an aggregate number of shares
equal to $1,100,000 divided by the per share exercise price of the warrant, (ii) WTI was issued a warrant to purchase an aggregate number of shares equal to $550,000 divided by the per share exercise price of the warrant, and (iii) Horizon
received a warrant to purchase an aggregate number of shares equal to $55,000 divided by the per share exercise price of the warrant. On April 28, 2009 Horizon was issued an additional warrant to purchase an aggregate number of shares equal to
$495,000 divided by the per share exercise price of the warrant in connection with the additional $5.0 million Term Loan that was automatically funded by Horizon pursuant to the Loan Agreement.

On November 18, 2008, the Company issued a total of 179,328 common stock warrants with an exercise price of $9.51 per share and a
ten year life to the Lenders, or a calculated fair value of $1.4 million. This fair value was calculated using a Black-Scholes valuation model and the following assumptions: volatility of 78.9%, dividend rate of 0%, risk-free interest rate of 3.54%
and a ten year life. The exercise price of the common stock warrants issued on November 18, 2008 was adjusted to $6.90, the price per share sold in an equity financing that closed on February 24, 2009 (see Note 7), resulting in an
additional 67,773 common stock warrants for the Lenders. On April 28, 2009, the Company issued a total of 49,460 common stock warrants with an exercise price of $10.01 per share and a ten year life to Horizon, or a calculated fair value of
$542,144. This fair value was calculated using a Black-Scholes valuation model and the following assumptions: volatility of 99.1%, dividend rate of 0%, risk-free interest rate of 3.00% and a ten year life. The exercise price of the common stock
warrants issued to Horizon on both November 18, 2008 and April 28, 2009 was further adjusted to $4.80, the price per share sold in an equity financing that closed October 7, 2009 (see Note 7), resulting in an additional 57,152 common
stock warrants for Horizon. The exercise price of Horizons outstanding common stock warrants was further adjusted to $3.90, the price per share sold in an equity financing that closed January 20, 2010 (see Note 7), resulting in an
additional 26,442 common stock warrants for Horizon.

As discussed in Note 2, effective January 1, 2009, as a result of a
change in accounting guidance, the Company revalued the warrants issued in November 2008 and reclassified them from equity to a liability. The fair value of the warrant liability on January 1, 2009 was $1.5 million and the change in fair value
was recorded as an increase to the deficit accumulated during development stage. This fair value was calculated using a weighted-average Black-Scholes valuation model and the following assumptions: volatility of 79.6%, dividend rate of 0%, risk-free
interest rate of 2.24% and a remaining life of 9.88 years.

As of December 31, 2009, Horizon had outstanding 114,583
common stock warrants with an exercise price of $4.80 per share. The fair value of the warrant liability associated with these warrants was $471,585 as of December 31, 2009. This fair value was calculated using a weighted-average Black-Scholes
valuation model and the following assumptions: volatility between 103.9% and 104.8%, dividend rate of 0%, risk-free interest rate of 3.84% and a remaining life between 8.89 and 9.33 years. The Company recorded a decrease of $119,904 in the change in
value of the warrant liability for the year ended December 31, 2009 for this portion of the warrant liability.

As of
December 31, 2010, Horizon had outstanding 141,025 common stock warrants with an exercise price of $3.90 per share. The fair value of the warrant liability associated with these warrants was $312,751 as of



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EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



May 18, 2010, the date on which the warrants down round protection expired. This Level 3 fair value was calculated using a weighted-average Black-Scholes valuation model and the
following assumptions: volatility between 113.25% and 113.33%, dividend rate of 0%, risk-free interest rate of 3.38% and a remaining life between 8.51 and 8.95 years. As a result of the down round protection expiring, on May 18, 2010 the
Company recorded a decrease of $158,834 in the change in value of the warrant liability for the year ended December 31, 2010 and reclassified the warrant liability to equity.

Warrants Exercised

On September 29, 2009, SVB completed a cashless exercise of the warrants issued to them as part of the Loan Agreement. SVB held a total of 159,420 common stock warrants with an exercise price of
$6.90 per share. The cashless exercise of the warrants resulted in the Company issuing 125,470 shares of its common stock. The fair value of the warrant liability on the date of exercise was $4.8 million. This fair value was calculated using a
weighted-average Black-Scholes valuation model and the following assumptions: volatility of 108.0%, dividend rate of 0%, risk-free interest rate of 3.29% and a remaining life of 9.14 years. As a result of the warrants being exercised, the warrant
liability was reclassified to equity with $3.8 million being recorded as a change in value of the warrant liability for the year ended December 31, 2009.

On October 2, 2009, WTI completed a cashless exercise of the warrants issued to them as part of the Loan Agreement entered into on November 18, 2008. WTI held a total of 79,710 common stock
warrants with an exercise price of $6.90 per share. The cashless exercise of the warrants resulted in the Company issuing 59,248 shares of its common stock. The fair value of the warrant liability on the date of exercise was $494,652. This fair
value was calculated using a weighted-average Black-Scholes valuation model and the following assumptions: volatility of 108.0%, dividend rate of 0%, risk-free interest rate of 3.22% and a remaining life of 9.13 years. As a result of the warrants
being exercised, the warrant liability was reclassified to equity with $1,210 being recorded as a change in value of the warrant liability for the year ended December 31, 2009. WTI also completed a cashless exercise of an additional 24,990
common stock warrants with an exercise price of $23.68 per share. The cashless exercise of the warrants resulted in the Company issuing 2,996 shares of its common stock. These warrants were not included as part of the warrant liability.

First Amendment to the Loan Agreement with Silicon Valley Bank Entered Into February 8, 2010

On February 8, 2010 the Company and SVB entered into a First Amendment (the Amendment) to the Loan Agreement, which reduced the
annual interest rate from 11.0% to a fixed annual rate of 10.0%, payable monthly. This had the effect of reducing the monthly payment obligation from $383,532 to $380,421 commencing on March 1, 2010 and ending on December 1, 2011.

Pursuant to the Amendment, the conditions pursuant to which the Excluded Collateral (as defined in the Loan Agreement) will
be deemed to be included as Collateral (as defined in the Loan Agreement) were changed from the failure to have five months of remaining liquidity to the occurrence of an Event of Default (as defined in the Loan Agreement) after the date of the
Amendment or the lenders awareness after such date of an Event of Default that occurred on or before such date with written notice of such event delivered to the Company. In addition, the Amendment revised the financial covenants in the Loan
Agreement to delete the covenant relating to five months of remaining liquidity and to change the liquidity ratio covenant to equal a ratio of (i) the sum of the Companys unrestricted cash and cash equivalents held with SVB and SVBs
affiliates, divided by (ii) the outstanding principal amount of the Term Loan, which is not permitted to be less than 1.50:1.00. Finally, the Amendment added a new covenant, the breach of which would constitute an Event of Default. The new
covenant required that the Company receive aggregate net proceeds of at least $4.0 million from new capital transactions



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EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



after January 1, 2010 and before March 31, 2010 and to keep the proceeds of such transactions at SVB until used. The Company satisfied this new covenant with the closing, on
January 20, 2010, of its sale of 1,239,717 shares of its common stock to certain institutional investors in a registered direct offering for gross proceeds of approximately $4.8 million, before deducting offering expenses.

Second Amendment to the Loan Agreement with Silicon Valley Bank Entered Into July 8, 2010

On July 8, 2010, the Company and SVB entered into a Second Amendment (the Second Amendment) to the Loan Agreement. The Second
Amendment modified the repayment terms of the Term Loan such that from the date of the Second Amendment through December 31, 2010, the Company was only required to make interest only monthly payments on the Term Loan, thereby reducing its
monthly debt payment. Then, beginning on January 1, 2011, the remaining balance due on the Term Loan will amortize over 30 equal payments of principal and interest, which will be payable monthly. In addition, the Second Amendment amended the
interest rate due on the remaining principal amount of the Term Loan from 10.0% to a fixed annual rate of 11.0%, payable monthly. The Second Amendment also revised the terms of the financial covenants in the Loan Agreement related to the liquidity
ratio and new capital transactions. Pursuant to the Second Amendment, the liquidity ratio equals the ratio of (i) the sum of the Companys unrestricted cash and cash equivalents held with SVB and SVBs affiliates plus the
Companys eligible accounts, divided by (ii) the outstanding principal amount of the Term Loan and is not permitted to be less than 1.00:1.00. Under the Loan Agreement, the liquidity ratio was not permitted to be less than 1.50:1.00.
Pursuant to the Second Amendment, the Company must receive aggregate net proceeds from New Capital Transactions (as defined in the Loan Agreement) of not less than $2.0 million from the date of the Second Amendment through August 31, 2010, $7.0
million from the date of the Second Amendment through October 31, 2010, $15.0 million from the date of the Second Amendment through January 31, 2011 and $35.0 million from the date of the Second Amendment through June 30, 2011. If the
Company meets these financing requirements, it will satisfy the covenant; however, if it does not receive aggregate net proceeds from New Capital Transactions of at least $3.5 million from the date of the Second Amendment through August 31,
2010, $7.5 million from the date of the Second Amendment through October 31, 2010, $15.0 million from the date of the Second Amendment through January 31, 2011 and $35.0 million from the date of the Second Amendment through June 30,
2011, SVBs springing lien on the Companys intellectual property will convert to a full lien on the intellectual property as of the date such Proposed Capital Raise was missed. The Company received approximately $6.3 million
from the sale of preferred stock and common stock warrants in a private placement transaction that closed on September 30, 2010, which was less than the amount required by the Second Amendment and resulted in the Company entering into a Third
Amendment to the Loan Agreement with SVB on November 4, 2010. Finally, the Second Amendment, revised the definition of Make-Whole Premium so that only Term Loan payments of principal made after the date of the Second Amendment will
be counted for purposes of determining whether the Company has made twelve regularly scheduled monthly payments of principal in accordance with Section 2.1.1(d) of the Loan Agreement when the Make-Whole Premium comes due.

Warrant Issued

The Second Amendment also required the issuance of a new warrant to SVB with an exercise price per share equal to the volume weighted average closing price of the Companys publicly traded common
stock for the five trading days prior to the date of the Second Amendment. The warrant gives SVB the right to purchase a number of shares of the Companys common stock equal to $316,350 divided by the exercise price per share. On July 8,
2010, SVB was issued a warrant to purchase 150,642 shares of the Companys common stock with an exercise price of $2.10 per share.



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EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



Third Amendment to the Loan Agreement with Silicon Valley Bank Entered Into
November 4, 2010

On November 4, 2010, the Company and SVB entered into a Third Amendment (the Third
Amendment) to the Loan Agreement. The Third Amendment modified the New Capital Transaction covenant such that it waived the requirements to receive aggregate net proceeds from New Capital Transactions of not less than $3.5 million from the date of
the Second Amendment through August 31, 2010 and $7.5 million from the date of the Second Amendment through October 31, 2010. The Third Amendment also modified the requirement to receive aggregate net proceeds from New Capital Transactions
of not less than $15.0 million from the date of the Second Amendment through January 31, 2011 to $12.5 million and eliminated the requirement to receive aggregate net proceeds from New Capital Transactions of not less than $35.0 million from
the date of the Second Amendment through June 30, 2011. Lastly, the Third Amendment suspended the liquidity ratio covenant, which was not permitted to be less than 1.00:1.00, until January 31, 2011. The Company has agreed to maintain a
blocked cash collateral account with funds equal to the principal balance outstanding until such time that it has: received aggregate net proceeds from New Capital Transactions of not less than $12.5 million from the date of the Second Amendment
through January 31, 2011; SVB has received a financial forecast through December 31, 2012 approved by the Companys board of directors; and the Company and SVB have agreed to new financial covenants or a new financial structure for
the Companys obligations. There were no changes to the repayment terms of the Term Loan as defined in the Second Amendment. The Company satisfied the New Capital Transaction covenant with the closing, on December 14, 2010, of its sale of
17,020,000 shares of its common stock together with warrants to purchase an additional 17,020,000 shares of common stock in a public offering for gross proceeds of approximately $29.8 million, before deducting offering expenses.

On March 3, 2011 the Company entered into a fourth amendment to the Loan Agreement with SVB, amending both the terms and covenants
(see Note 16). As required by generally accepted accounting principles, the classification of both the consolidated balance sheet as of December 31, 2010 and the debt principal payment table below, have been adjusted to reflect the
Companys obligations under the terms of the fourth amendment.

The Company was in compliance with all covenants (as
amended) related to the notes payable at December 31, 2010, and has not incurred any events of default as described in the terms of the notes payable agreements.

Scheduled debt principal payments are as follows as of December 31, 2010:



|                              |  |   |           |  
|----------------------------- |  | - | --------- | -
|Years Ending December 31:     |  |   |          
|2011                          |  | $ | 921,998   |  
|2012                          |  |   | 2,307,161 |  
|2013                          |  |   | 2,458,599 |  
|2014                          |  |   | 639,273   |  
|                              |  |   |           |  
|                              |  |   | 6,327,031 |  
|Less: Original issue discount |  |   | (421,874  | )
|                              |  |   |           |  
|Notes payable, net            |  | $ | 5,905,157 |  
|                              |  |   |           |  



|(7) | Stock Purchases
|--- | ---------------

Private PlacementFebruary 2009

On February 19, 2009, the Company entered into securities purchase agreements for the sale of 2,185,066 shares of its common stock, together with warrants to purchase an aggregate of 1,092,533 shares
of its common



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EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



stock, in a private placement transaction with several accredited investors (the Private Placement) including certain directors and officers of the Company (see Note 12). The purchase price per
share was $6.90, which equaled the consolidated closing bid price of the Companys common stock as reported by the NASDAQ Global Market on February 19, 2009. The warrants are exercisable at any time and from time to time beginning on the
date that was six months and one day after the closing of the Private Placement and ending four years after the closing of the Private Placement. The warrants have an exercise price of $8.28 per share, which equals 120% of the consolidated closing
bid price of the Companys common stock as reported by the NASDAQ Global Market on February 19, 2009. On February 24, 2009, the Company completed the final closing of the Private Placement receiving gross proceeds of $15.9 million
before deducting offering expenses. In addition, the placement agent received a warrant to purchase 36,373 shares of common stock in the same form as that issued to investors in the Private Placement.

Registered Direct Offerings

On October 2, 2009, the Company entered into a securities purchase agreement with certain institutional investors for the sale of 1,026,845 shares of its common stock in a registered direct offering,
at a purchase price of $4.80 per share. On October 7, 2009, the offering closed and the Company received gross proceeds of $4.9 million before deducting offering expenses. No warrants were issued with the offering.

On January 14, 2010, the Company entered into a securities purchase agreement with certain institutional investors for the sale of
1,239,717 shares of its common stock in a registered direct offering, at a purchase price of $3.90 per share. On January 20, 2010, the offering closed and the Company received gross proceeds of $4.8 million before deducting offering expenses.
No warrants were issued with the offering.

Private PlacementSeptember 2010

On September 29, 2010, the Company entered into securities purchase agreements with several accredited investors, including certain
directors and officers of the Company (see Note 12), for the sale of 3,394,309 shares of its Series A Non-Voting Convertible Preferred Stock (Preferred Stock) and 3,394,309 common stock warrants (Up Front Warrants) in a private placement transaction
(the Private Placement), at a purchase price of $1.72 per share and $0.125 per warrant, respectively. On September 30, 2010, the Private Placement closed and the Company received gross proceeds of $6.3 million before deducting offering
expenses.

The Up Front Warrants purchased have an exercise price per share of $2.15, or 125% of the original purchase price
of the Preferred Stock. The warrants will become exercisable upon the later to occur of the following: (i) the date that is six months and one day after the issuance of the Up Front Warrants, or (ii) the closing of an offering of equity
securities producing gross proceeds of at least $15.0 million (excluding proceeds from the Private Placement) (an Equity Offering) and will expire on the fifth anniversary of the date on which they become exercisable.

Pursuant to the securities purchase agreements, if the Preferred Stock converted into common stock upon completion of an Equity Offering
each Preferred Stock investor would have been required to purchase additional warrants (Conversion Warrants) from the Company to purchase that number of shares of common stock equal to (i) the difference between $1.72 and the price per share of
common stock underlying the equity securities paid by investors in an Equity Offering, multiplied bythe number of shares of Preferred Stock purchased by the investor, divided by(ii) the Conversion Warrant exercise price per
share, which would have equaled $2.06 (120% of the $1.72 purchase price). The Conversion Warrants would only be issued if the Company completed an Equity Offering at a purchase price per share of $1.72 or less. Since the Company completed an Equity
Offering in December 2010 at a purchase price of $1.75 per share and corresponding warrant, the Conversion Warrants were not issued.



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EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



Series A Non-Voting Convertible Preferred Stock

The following is a summary of material provisions of the Preferred Stock.

Dividends.Dividends will be paid on the Preferred Stock on an as-converted basis when, as, and if paid on
the Companys common stock.

Liquidation Preference.In the event of any liquidation,
dissolution or winding up of the Company, any distributions to holders of the Companys outstanding equity shall be made as follows: First, to the holder of any share of Preferred Stock up to 150% of the original purchase price plus declared
and unpaid dividends on each share of Preferred Stock, and then pro rata to the holders of the common stock and Preferred Stock on an as converted basis.

No Voting Rights.Except as required by law or as otherwise set forth below the Preferred Stock shall be non-voting and shall not have any voting rights. So long as 10% of
the shares of Preferred Stock are outstanding, in addition to any other vote or approval required under the Companys charter or bylaws, the Company will not, without the written consent of the holders of at least 75% of the Preferred Stock,
either directly or by amendment, merger, consolidation, or otherwise: (i) create or authorize the creation of or issue any other security convertible into or exercisable for any equity security, having rights, preferences or privileges senior
to or on parity with the Preferred Stock, or increase the authorized number of shares of Preferred Stock; or (ii) purchase or redeem or pay any dividend on any capital stock prior to the Preferred Stock, other than stock repurchased from former
employees or consultants in connection with the cessation of their employment/services, at the lower of fair market value or cost; other than as approved by the board of directors.

Conversion Rights.The Preferred Stock may be converted on a 1:1 basis into shares of common stock at any
time at the option of the investor, subject to adjustments for stock dividends, splits, combinations and similar events; provided, however,that no investor will be permitted to convert an amount of Preferred Stock that would result in such
investor owning more than 19.99% of the Companys outstanding common stock upon such conversion.

Each share of Preferred
Stock will automatically be converted on a 1:1 basis into shares of common stock (subject to adjustments for stock dividends, splits, combinations and similar events): (i) immediately after the closing of an offering by the Company of equity
securities producing gross proceeds of at least $15.0 million, excluding proceeds from the sale of Preferred Stock, or (ii) upon the written consent of the holders of 75% of the Preferred Stock; provided, however,that in the case of
(i) and (ii) above, no investor will be permitted to convert an amount of Preferred Stock that would result in such investor owning more than 19.99% of the Companys outstanding common stock upon such conversion.

Public Offering

On December 14, 2010, the Company closed a public offering, selling 17,020,000 shares of common stock together with warrants to purchase an additional 17,020,000 shares of common stock at an
aggregate price of $1.75 per share and corresponding warrant ($1.74 per share and $0.01 per warrant), for gross proceeds of $29.8 million before deducting offering expenses. This includes the full exercise of the over-allotment option by
Craig-Hallum Capital Group LLC (the Underwriter) of 2,220,000 shares of common stock together with warrants to purchase 2,220,000 shares of common stock. Certain directors and officers of the Company participated in the public offering (see
Note 12).



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EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



The warrants have an exercise price of $2.19 per share of common stock, are exercisable
beginning 181 days after the closing date of the offering, and are exercisable for five years after the date the warrants first become exercisable.

Pursuant to the terms of the Underwriting Agreement, the Company issued a warrant to purchase 340,400 shares of the Companys common stock at an exercise price of $2.19 per share to the Underwriter
(the Underwriter Warrant). The Underwriter purchased the Underwriter Warrant from the Company for $100 as partial compensation for its services as underwriter to the Company in connection with the Companys public offering. The Underwriter
Warrant will become exercisable 181 days from the date of issuance on December 14, 2010 and the exercise period will end five years from December 8, 2010, the date of effectiveness of the Registration Statement. The Underwriter Warrant
does not allow for cashless exercise. The fair value of the Underwriter Warrant on the date of issuance was $794,869. This fair value was calculated using a Black-Scholes valuation model and the following assumptions: volatility 126.3%, dividend
rate of 0%, risk-free interest rate of 2.08% and a five year life.

On December 14, 2010, immediately following the
completion of the public offering, all of the Companys outstanding Series A Non-Voting Convertible Preferred Stock automatically converted on a 1:1 basis into 3,394,309 shares of common stock in accordance with its terms.



|(8) | Convertible Preferred Stock
|--- | ---------------------------

The Companys Amended and Restated Certificate of Incorporation, currently authorizes 5,000,000 shares of $0.01 par value convertible preferred stock. As of December 31, 2010 and 2009, there
were no shares of convertible preferred stock issued or outstanding as all shares of Series A, Series B and Series C convertible preferred stock converted into shares of common stock upon completion of the Companys IPO utilizing the quotient
obtained by dividing the original purchase price per share of $6.5593, $3.9430 and $8.0926 by $4.2379, $3.9430 and $8.0926 per share, respectively, and all shares of Series A convertible preferred stock issued with the September 29, 2010
private placement converted to common stock on a 1:1 basis upon the December 14, 2010 closing of the Companys public offering (see Note 7).



|(9) | Income Taxes
|--- | ------------

The Company
has incurred net operating losses (NOLs) since inception. The Company has not reflected any benefit of such net operating loss carryforwards in the accompanying consolidated financial statements.

The income tax expense benefit differed from the amount computed by applying the U.S. federal income tax rate of 34% to income before
income taxes as a result of the following:



|                                |  |      |       |   |      |  |       |      |  |  |       |  
|------------------------------- |  | ---- | ----- | - | ---- |  | ----- | ---- |  |  | ----- | -
|                                |  | 2010 |       |   | 2009 |  |       | 2008 | 
|Computed expected tax benefit |  |      | 34.0  | % |      |  | 34.0  | %    |  |  | 34.0  | %
|Other permanent adjustments     |  |      | -3.8  | % |      |  | -6.3  | %    |  |  | -0.8  | %
|Research and development credit |  |      | 1.2   | % |      |  | 1.2   | %    |  |  | 2.4   | %
|Federal valuation allowance     |  |      | -31.4 | % |      |  | -28.9 | %    |  |  | -35.6 | %
|                                |  |      |       |   |      |  |       |      |  |  |       |  
|                                |  |      | 0.0   | % |      |  | 0.0   | %    |  |  | 0.0   | %
|                                |  |      |       |   |      |  |       |      |  |  |       |  



88



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



The tax effect of temporary differences that give rise to significant portions of the
deferred tax assets as of December 31 is presented below:



|                                           |  |      |             |   |      |   |             |  
|------------------------------------------ |  | ---- | ----------- | - | ---- | - | ----------- | -
|                                           |  | 2010 |             |   | 2009 |  
|Deferred tax assets (liabilities):         |  |      |             |   |      |   |             |  
|Start-up costs                             |  | $    | 13,002,000  |   |      | $ | 10,729,000  |  
|Capitalized research and development costs |  |      | 19,239,000  |   |      |   | 16,376,000  |  
|Reserves and accruals                      |  |      | 1,530,000   |   |      |   | 1,436,000   |  
|Property and equipment                     |  |      | 628,000     |   |      |   | 499,000     |  
|Research and development credit            |  |      | 2,292,000   |   |      |   | 2,089,000   |  
|Net operating loss carryforwards           |  |      | 21,369,000  |   |      |   | 20,773,000  |  
|                                           |  |      |             |   |      |   |             |  
|Total gross deferred tax assets            |  |      | 58,060,000  |   |      |   | 51,902,000  |  
|Valuation allowance                        |  |      | (58,060,000 | ) |      |   | (51,902,000 | )
|                                           |  |      |             |   |      |   |             |  
|Net deferred tax assets                    |  | $    |            |   |      | $ |            |  
|                                           |  |      |             |   |      |   |             |  

In assessing the realization of deferred tax assets, management considers whether it is more likely than not
that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during periods in which those temporary differences become
deductible. In addition, certain limitations imposed under the Internal Revenue Code could further limit the Companys realization of these deferred tax assets in the event of changes in ownership of the Company (as described below).

Based on the level of historical taxable losses and projections of future taxable income (losses) over the periods in which
the deferred tax assets can be realized, management currently believes that it is more likely than not that the Company will not realize the benefits of these deductible differences. Accordingly, the Company has provided a valuation allowance
against the gross deferred tax assets as of December 31, 2010 and 2009.

As of December 31, 2010, the Company has
U.S. federal net operating loss carryforwards of approximately $53,257,000. Of the total federal net operating loss, $258,000 would result in tax benefits recorded to additional paid-in capital. The federal net operating loss carryforwards expire in
the years 2022 through 2030. However, the taxing authorities do have the ability to adjust the Companys net operating loss calculations upon utilization.

Federal tax laws impose significant restrictions on the utilization of net operating loss carryforwards and research and development credits in the event of a change in ownership of the Company, as
defined by the Internal Revenue Code Sections 382 and 383. In addition, Section 382 may limit the Companys built-in items of deduction, including start-up costs and capitalized research and development costs. The Company is currently
conducting a review of its ownership changes under Section 382. The results of this review indicate that ownership changes have occurred. The Companys gross net operating loss carryforwards, research and development credits, capitalized
start up costs and capitalized research costs, totaling approximately $136.0 million as of December 31, 2010, will be subject to a limitation. The Section 382 limitation and accompanying recognized built-in loss limitation is currently
estimated to result in the expiration of between $82.0 million and $102.0 million of the Companys aforementioned gross tax attributes.

As of December 31, 2010 and 2009, there were no unrecognized tax benefits. Accordingly, a tabular reconciliation from beginning to ending periods is not provided. The Company will
classify any future interest and penalties as a component of income tax expense if incurred. To date, there have been no interest or penalties charged or accrued in relation to unrecognized tax benefits.



89



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



The Company does not anticipate that the total amount of unrecognized tax benefits will
change significantly in the next twelve months.

The Company will classify any future interest and penalties as a component of
income tax expense, if incurred. To date, there have been no interest or penalties charged or accrued in relation to unrecognized tax benefits.

The Company is subject to federal examinations for the years 2007 forward. There are no tax examinations currently in progress.



|(10) | Stock Options
|---- | -------------

The
Company has adopted the EnteroMedics Inc. 2003 Stock Incentive Plan (the Plan) that includes both incentive stock options and nonqualified stock options to be granted to employees, officers, consultants, independent contractors, directors and
affiliates of the Company. At December 31, 2010 and 2009, according to the Plan, 2,300,000 and 1,150,183 shares, respectively, have been authorized and reserved. The board of directors establishes the terms and conditions of all stock option
grants, subject to the Plan and applicable provisions of the Internal Revenue Code. Incentive stock options must be granted at an exercise price not less than the fair market value of the common stock on the grant date. The options granted to
participants owning more than 10% of the Companys outstanding voting stock must be granted at an exercise price not less than 110% of fair market value of the common stock on the grant date. The options expire on the date determined by the
board of directors, but may not extend more than 10 years from the grant date, while incentive stock options granted to participants owning more than 10% of the Companys outstanding voting stock expire five years from the grant date. The
vesting period for employees is generally over four years. The vesting period for nonemployees is determined based on the services being provided.

On October 29, 2010, a special meeting of stockholders was held and the stockholders approved amendments to the Companys 2003 Stock Incentive Plan to (a) increase the number of shares
authorized under the plan by 1,149,817 and (b) allow for a one-time stock option exchange program.

The stock option
exchange program was an offer by the Company to all of its employees (including executive officers) to exchange some or all of their outstanding options to purchase the Companys common stock for fewer new options with exercise prices equal to
the closing price per share of the Companys common stock on the NASDAQ Capital Market on the date of grant (the Offer). A stock option was eligible for exchange if: (i) it had an exercise price of greater than $6.00 per share;
(ii) it was not granted in connection with the performance of consulting services for the Company; (iii) it was held by an employee of the Company who was eligible to participate in the Offer; and (iv) it remained outstanding (i.e.
unexpired and unexercised) as of the date of grant of the new options (such options are referred to herein as Eligible Options). There were 481,288 Eligible Options and on October 29, 2010, the Offer expired with a total of 481,288 shares of
common stock underlying Eligible Options being validly tendered and not withdrawn. The Company granted new options to purchase 384,629 shares of the Companys common stock in exchange for the cancellation of the tendered Eligible Options. The
exercise price of the new stock options is $1.90 and the new options vest such that one-third of the shares underlying the option are immediately vested on the date of grant and the remaining shares vest monthly for 24 months. Each new option
is a non-qualified stock option for U.S. federal income tax purposes and has a term of seven years from the date of grant.



90



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



The Eligible Options were exchanged using the below exchange ratios, which were
designed to result in the fair value of the new options being approximately equal in the aggregate to the fair value of the Eligible Options that were tendered for cancellation in the exchange offer.



|                                                  |  |                                                       
|------------------------------------------------- |  | ------------------------------------------------------
|If the Per Share Price of the
Eligible Option
was |  | The Exchange Ratio was (Eligible
Option to New
Option)
|$6.00 to $9.99                                    |  | 1.03 to 1.00                                          
|$10.00 to $19.99                                  |  | 1.10 to 1.00                                          
|$20.00 to $29.99                                  |  | 1.20 to 1.00                                          
|$30.00 to $39.99                                  |  | 1.26 to 1.00                                          
|$40.00 and up                                     |  | 1.37 to 1.00                                          

The exchange
of options pursuant to the option exchange program is characterized as a modification of the existing option awards in accordance with the fair value method of accounting for share-based payments. However, no additional expense will be recognized as
the modification was value neutral. To be value neutral, the fair value of the stock options tendered as calculated immediately prior to their tender must be at least equal to the fair value of the stock options received by employees in the option
exchange program. Any previously unrecognized compensation expense from the tendered stock options and incremental compensation costs associated with the new stock options received in the option exchange program will be recognized over the
appropriate vesting period.



91



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



Stock option activity is as follows:



|                                  |  |                           |                  |   |                     |                                |          |                         |  |   |       |  |  |   |         | 
|--------------------------------- |  | ------------------------- | ---------------- | - | ------------------- | ------------------------------ | -------- | ----------------------- |  | - | ----- |  |  | - | ------- | 
|                                  |  | SharesAvailable 
ForGrant |                  |   | Outstanding Options |                                |          | AggregateIntrinsicValue | 
|                                  |  |                           | Number 
ofShares |   |                     | Weighted-AverageExercise
Price |          |                        
|Shares reserved at Plan inception |  |                           | 7,143            |   |                     |                                |         |                         |  | $ |      |  |  |   |         | 
|                                  |  |                           |                  |   |                     |                                |          |                         |  |   |       |  |  |   |         | 
|Balance, December 31, 2003        |  |                           | 7,143            |   |                     |                                |         |                         |  |   |      |  |  |   |         | 
|Shares reserved                   |  |                           | 73,260           |   |                     |                                |         |                         |  |   |      |  |  |   |         | 
|Options granted                   |  |                           | (57,466          | ) |                     |                                | 57,466   |                         |  |   | 2.76  |  |  |   |         | 
|Options exercised                 |  |                           |                 |   |                     |                                |         |                         |  |   |      |  |  |   |         | 
|Options cancelled                 |  |                           | 641              |   |                     |                                | (641     | )                       |  |   | 2.76  |  |  |   |         | 
|                                  |  |                           |                  |   |                     |                                |          |                         |  |   |       |  |  |   |         | 
|Balance, December 31, 2004        |  |                           | 23,578           |   |                     |                                | 56,825   |                         |  |   | 2.76  |  |  |   |         | 
|Shares reserved                   |  |                           | 113,148          |   |                     |                                |         |                         |  |   |      |  |  |   |         | 
|Options granted                   |  |                           | (84,028          | ) |                     |                                | 84,028   |                         |  |   | 2.76  |  |  |   |         | 
|Options exercised                 |  |                           |                 |   |                     |                                | (4,926   | )                       |  |   | 2.76  |  |  |   |         | 
|Options cancelled                 |  |                           | 7,209            |   |                     |                                | (7,209   | )                       |  |   | 2.76  |  |  |   |         | 
|                                  |  |                           |                  |   |                     |                                |          |                         |  |   |       |  |  |   |         | 
|Balance, December 31, 2005        |  |                           | 59,907           |   |                     |                                | 128,718  |                         |  |   | 2.76  |  |  |   |         | 
|Shares reserved                   |  |                           | 94,449           |   |                     |                                |         |                         |  |   |      |  |  |   |         | 
|Options granted                   |  |                           | (113,277         | ) |                     |                                | 113,277  |                         |  |   | 6.90  |  |  |   |         | 
|Options exercised                 |  |                           |                 |   |                     |                                | (14,498  | )                       |  |   | 2.76  |  |  |   |         | 
|Options cancelled                 |  |                           | 17,237           |   |                     |                                | (17,237  | )                       |  |   | 2.76  |  |  |   |         | 
|                                  |  |                           |                  |   |                     |                                |          |                         |  |   |       |  |  |   |         | 
|Balance, December 31, 2006        |  |                           | 58,316           |   |                     |                                | 210,260  |                         |  |   | 5.00  |  |  |   |         | 
|Shares reserved                   |  |                           | 362,183          |   |                     |                                |         |                         |  |   |      |  |  |   |         | 
|Options granted                   |  |                           | (176,098         | ) |                     |                                | 176,098  |                         |  |   | 45.78 |  |  |   |         | 
|Options exercised                 |  |                           |                 |   |                     |                                | (5,851   | )                       |  |   | 3.65  |  |  |   |         | 
|Options cancelled                 |  |                           | 30,416           |   |                     |                                | (30,416  | )                       |  |   | 74.71 |  |  |   |         | 
|                                  |  |                           |                  |   |                     |                                |          |                         |  |   |       |  |  |   |         | 
|Balance, December 31, 2007        |  |                           | 274,817          |   |                     |                                | 350,091  |                         |  |   | 19.48 |  |  |   |         | 
|Shares reserved                   |  |                           |                 |   |                     |                                |         |                         |  |   |      |  |  |   |         | 
|Options granted                   |  |                           | (221,838         | ) |                     |                                | 221,838  |                         |  |   | 45.56 |  |  |   |         | 
|Options exercised                 |  |                           |                 |   |                     |                                | (16,820  | )                       |  |   | 3.89  |  |  |   |         | 
|Options cancelled                 |  |                           | 89,019           |   |                     |                                | (89,019  | )                       |  |   | 38.69 |  |  |   |         | 
|                                  |  |                           |                  |   |                     |                                |          |                         |  |   |       |  |  |   |         | 
|Balance, December 31, 2008        |  |                           | 141,998          |   |                     |                                | 466,090  |                         |  |   | 28.79 |  |  |   |         | 
|Shares reserved                   |  |                           | 500,000          |   |                     |                                |         |                         |  |   |      |  |  |   |         | 
|Options granted                   |  |                           | (692,645         | ) |                     |                                | 692,645  |                         |  |   | 14.68 |  |  |   |         | 
|Options exercised                 |  |                           |                 |   |                     |                                | (13,437  | )                       |  |   | 2.79  |  |  |   |         | 
|Options cancelled                 |  |                           | 149,736          |   |                     |                                | (149,736 | )                       |  |   | 31.20 |  |  |   |         | 
|                                  |  |                           |                  |   |                     |                                |          |                         |  |   |       |  |  |   |         | 
|Balance, December 31, 2009        |  |                           | 99,089           |   |                     |                                | 995,562  |                         |  |   | 18.96 |  |  | $ | 68,243  | 
|                                  |  |                           |                  |   |                     |                                |          |                         |  |   |       |  |  |   |         | 
|Shares reserved                   |  |                           | 1,149,817        |   |                     |                                |         |                         |  |   |      |  |  |   |         | 
|Options granted                   |  |                           | (423,789         | ) |                     |                                | 423,789  |                         |  |   | 1.96  |  |  |   |         | 
|Options exercised                 |  |                           |                 |   |                     |                                | (8,592   | )                       |  |   | 2.76  |  |  |   |         | 
|Options cancelled                 |  |                           | 598,244          |   |                     |                                | (598,244 | )                       |  |   | 25.29 |  |  |   |         | 
|                                  |  |                           |                  |   |                     |                                |          |                         |  |   |       |  |  |   |         | 
|Balance, December 31, 2010        |  |                           | 1,423,361        |   |                     |                                | 812,515  |                         |  | $ | 5.60  |  |  | $ | 506,261 | 
|                                  |  |                           |                  |   |                     |                                |          |                         |  |   |       |  |  |   |         | 



92



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



The options outstanding, vested and currently exercisable by exercise price at
December 31, 2010:



|                                         |  |                            |                                |  |                                                  |  |     |                         |  |   |                  |  |  |                                |         |  |                         |   |       |  |  |   |         | 
|---------------------------------------- |  | -------------------------- | ------------------------------ |  | ------------------------------------------------ |  | --- | ----------------------- |  | - | ---------------- |  |  | ------------------------------ | ------- |  | ----------------------- | - | ----- |  |  | - | ------- | 
|Outstanding Options and Expected to Vest |  |                            | Options Exercisable and Vested | 
|ExercisePrice                            |  | Number ofSharesOutstanding |                                |  | Weighted-AverageRemainingContractual Life(Years) |  |     | AggregateIntrinsicValue |  |   | Number ofOptions |  |  | Weighted-AverageExercise
Price |         |  | AggregateIntrinsicValue |  
|$1.75                                    |  |                            | 10,000                         |  |                                                  |  | 9.7 |                         |  | $ | 13,300           |  |  |                                |        |  |                         | $ | 1.75  |  |  | $ |        | 
|1.90                                     |  |                            | 384,629                        |  |                                                  |  | 6.8 |                         |  |   | 453,862          |  |  |                                | 149,575 |  |                         |   | 1.90  |  |  |   | 176,499 | 
|2.52                                     |  |                            | 14,994                         |  |                                                  |  | 9.4 |                         |  |   | 8,397            |  |  |                                | 5,272   |  |                         |   | 2.52  |  |  |   | 2,952   | 
|2.76                                     |  |                            | 94,098                         |  |                                                  |  | 4.5 |                         |  |   | 30,111           |  |  |                                | 94,098  |  |                         |   | 2.76  |  |  |   | 30,111  | 
|2.77                                     |  |                            | 1,603                          |  |                                                  |  | 4.9 |                         |  |   | 497              |  |  |                                | 1,603   |  |                         |   | 2.77  |  |  |   | 497     | 
|2.78                                     |  |                            | 173                            |  |                                                  |  | 5.3 |                         |  |   | 52               |  |  |                                | 173     |  |                         |   | 2.78  |  |  |   | 52      | 
|2.79                                     |  |                            | 68                             |  |                                                  |  | 5.3 |                         |  |   | 20               |  |  |                                | 68      |  |                         |   | 2.79  |  |  |   | 20      | 
|2.81                                     |  |                            | 81                             |  |                                                  |  | 3.7 |                         |  |   | 22               |  |  |                                | 81      |  |                         |   | 2.81  |  |  |   | 22      | 
|3.24                                     |  |                            | 12,500                         |  |                                                  |  | 9.1 |                         |  |   |                 |  |  |                                | 6,481   |  |                         |   | 3.24  |  |  |   |        | 
|3.78                                     |  |                            | 175,195                        |  |                                                  |  | 8.9 |                         |  |   |                 |  |  |                                | 175,195 |  |                         |   | 3.78  |  |  |   |        | 
|8.40                                     |  |                            | 4,166                          |  |                                                  |  | 8.1 |                         |  |   |                 |  |  |                                | 3,038   |  |                         |   | 8.40  |  |  |   |        | 
|11.46                                    |  |                            | 27,472                         |  |                                                  |  | 5.8 |                         |  |   |                 |  |  |                                | 27,472  |  |                         |   | 11.46 |  |  |   |        | 
|11.58                                    |  |                            | 13,328                         |  |                                                  |  | 8.3 |                         |  |   |                 |  |  |                                | 8,608   |  |                         |   | 11.58 |  |  |   |        | 
|13.80                                    |  |                            | 29,166                         |  |                                                  |  | 8.4 |                         |  |   |                 |  |  |                                | 15,393  |  |                         |   | 13.80 |  |  |   |        | 
|22.20                                    |  |                            | 2,383                          |  |                                                  |  | 8.5 |                         |  |   |                 |  |  |                                | 2,383   |  |                         |   | 22.20 |  |  |   |        | 
|26.40                                    |  |                            | 3,333                          |  |                                                  |  | 7.4 |                         |  |   |                 |  |  |                                | 2,986   |  |                         |   | 26.40 |  |  |   |        | 
|26.41                                    |  |                            | 1,666                          |  |                                                  |  | 7.4 |                         |  |   |                 |  |  |                                | 1,492   |  |                         |   | 26.41 |  |  |   |        | 
|30.36                                    |  |                            | 3,333                          |  |                                                  |  | 8.7 |                         |  |   |                 |  |  |                                | 3,333   |  |                         |   | 30.36 |  |  |   |        | 
|31.17                                    |  |                            | 873                            |  |                                                  |  | 6.2 |                         |  |   |                 |  |  |                                | 873     |  |                         |   | 31.17 |  |  |   |        | 
|44.77                                    |  |                            | 9,156                          |  |                                                  |  | 6.3 |                         |  |   |                 |  |  |                                | 9,156   |  |                         |   | 44.77 |  |  |   |        | 
|48.01                                    |  |                            | 22,913                         |  |                                                  |  | 7.2 |                         |  |   |                 |  |  |                                | 21,613  |  |                         |   | 48.01 |  |  |   |        | 
|48.96                                    |  |                            | 1,099                          |  |                                                  |  | 6.7 |                         |  |   |                 |  |  |                                | 1,099   |  |                         |   | 48.96 |  |  |   |        | 
|49.70                                    |  |                            | 286                            |  |                                                  |  | 7.1 |                         |  |   |                 |  |  |                                | 286     |  |                         |   | 49.70 |  |  |   |        | 
|                                         |  |                            |                                |  |                                                  |  |     |                         |  |   |                  |  |  |                                |         |  |                         |   |       |  |  |   |         | 
|                                         |  |                            | 812,515                        |  |                                                  |  |     |                         |  | $ | 506,261          |  |  |                                | 530,278 |  |                         | $ | 7.00  |  |  | $ | 210,153 | 
|                                         |  |                            |                                |  |                                                  |  |     |                         |  |   |                  |  |  |                                |         |  |                         |   |       |  |  |   |         | 

Stock-Based Compensation for Nonemployees

Stock-based compensation expenses related to stock options granted to nonemployees is recognized as the stock options are earned. The
Company believes that the fair value of the stock options is more reliably measurable than the fair value of the services received. The fair value of the stock options granted is calculated at each reporting date, using the Black-Scholes
option-pricing model, until the award vests or there is a substantial disincentive for the nonemployee not to perform the required services. All nonemployee stock options were fully expensed at December 31, 2010. The fair value for the years
ended December 31, 2010, 2009 and 2008 was calculated using the following assumptions:



|                         |  |                          |  |                    |  |              
|------------------------ |  | ------------------------ |  | ------------------ |  | -------------
|                         |  | Years Ended December 31,
|                         |  | 2010                     |  | 2009               |  | 2008         
|Risk-free interest rates |  | 2.82%3.81%              |  | 2.68%3.71%        |  | 2.24%3.98%  
|Expected life            |  | 9.01 years9.87 years    |  | 6 years9.98 years |  | 10 years     
|Expected dividends       |  | 0%                       |  | 0%                 |  | 0%           
|Expected volatility      |  | 113.25%127.93%          |  | 99.70%108.10%     |  | 72.88%75.25%



93



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



Stock-based compensation expense charged to operations on options granted to
nonemployees for the years ended December 31, 2010, 2009 and 2008 was $33,204, $210,075 and $(147,855), respectively, and $1,481,797 for the period from December 19, 2002 (inception) to December 31, 2010.

Employee Stock-Based Awards Granted on or Subsequent to January 1, 2006

On January 1, 2006, the Company adopted the fair value method of accounting for the issuance of stock-based payments, using the
prospective transition method. Under this transition method, beginning January 1, 2006, compensation cost recognized includes: (a) compensation cost for all stock-based awards granted prior to, but not yet vested as of December 31,
2005, based on the intrinsic value method, and (b) compensation cost for all stock-based payments granted or modified subsequent to December 31, 2005, based on the estimated grant-date fair value.

Compensation cost for employee stock-based awards is based on the estimated grant-date fair value and is recognized over the vesting
period of the applicable award on a straight-line basis. The weighted average estimated fair value of the employee stock options granted for the years ended December 31, 2010, 2009 and 2008 was $0.13, $11.62 and $27.70 per share,
respectively. The weighted average estimated fair value of the employee stock options granted for the year ended December 31, 2010, excluding options granted pursuant to the option exchange program, was $1.97 per share.

The Company uses the Black-Scholes pricing model to determine the fair value of stock options. The determination of the fair value of
stock-based payment awards on the date of grant is affected by the Companys stock price as well as assumptions regarding a number of complex and subjective variables. These variables include the Companys expected stock price volatility
over the term of the awards, actual and projected employee stock option exercise behaviors, risk-free interest rates and expected dividends. The estimated grant-date fair values of the employee stock options were calculated using the Black-Scholes
valuation model, based on the following assumptions for the years ended December 31, 2010, 2009 and 2008:



|                         |  |                          |  |                       |  |                   
|------------------------ |  | ------------------------ |  | --------------------- |  | ------------------
|                         |  | Years Ended December 31,
|                         |  | 2010                     |  | 2009                  |  | 2008              
|Risk-free interest rates |  | 0.89%2.62%              |  | 1.90%2.99%           |  | 2.57%4.01%       
|Expected life            |  | 4.00 years6.25 years    |  | 5.25 years6.25 years |  | 5 years6.25 years
|Expected dividends       |  | 0%                       |  | 0%                    |  | 0%                
|Expected volatility      |  | 113.20%124.78%          |  | 88.10%103.20%        |  | 67.63%74.50%     

Expected Life.    The expected life is based on the simplified method described in the SEC Staff
Accounting Bulletin, Topic 14: Share-Based Payment.

Volatility.    Since the Company was a
private entity for most of 2007 and a limited amount of historical data regarding the volatility of its common stock is available, the expected volatility used for 2010, 2009 and 2008 is based on both the volatility of similar entities, referred to
as guideline companies, and the Companys historical volatility. In evaluating similarity, the Company considered factors such as industry, stage of life cycle and size.

Risk-Free Interest Rate.    The risk-free rate is based on the daily yield curve rate from the
U.S. Treasury with remaining terms similar to the expected term on the options.



94



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



Dividend Yield.    The Company has never declared or paid
any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.

Forfeitures.The Company is required to estimate forfeitures at the time of grant, and revise those estimates in subsequent periods if actual forfeitures differ from those
estimates. The Company uses historical data to estimate pre-vesting option forfeitures and record stock-based compensation expense only for those awards that are expected to vest. All stock-based payment awards are amortized on a straight-line basis
over the requisite service periods of the awards, which are generally the vesting periods. If the Companys actual forfeiture rate is materially different from its estimate, the stock-based compensation expense could be significantly different
from what the Company has recorded in the current period.

As of December 31, 2010 there was $3,406,995 of total
unrecognized compensation costs related to non-vested stock option awards granted after January 1, 2006, which are expected to be recognized over a weighted-average period of 2.10 years.

The aggregate intrinsic value of stock options (the amount by which the market price of the stock on the date of exercise exceeded the
exercise price of the option) exercised during the years ended December 31, 2010, 2009 and 2008, was $12,385, $92,929 and $284,437, respectively.



95



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



|(11) | Warrants
|---- | --------

Stock warrant
activity is as follows:



|                            |  |              |            |   |          |   |       |                         |  |  |          |   |  |                         |      |  |          |  |         |                         |  |   |          |  |  |  |         |   |  |   |       | 
|--------------------------- |  | ------------ | ---------- | - | -------- | - | ----- | ----------------------- |  |  | -------- | - |  | ----------------------- | ---- |  | -------- |  | ------- | ----------------------- |  | - | -------- |  |  |  | ------- | - |  | - | ----- | 
|                            |  | CommonShares |            |   | Price(1) |   |       | Series APreferredShares |  |  | Price(1) |   |  | Series BPreferredShares |      |  | Price(1) |  |         | Series CPreferredShares |  |   | Price(1) | 
|Balance as of:              |  |              |            |   |          |   |       |                         |  |  |          |   |  |                         |      |  |          |  |         |                         |  |   |          |  |  |  |         |   |  |   |       | 
|December 31, 2002           |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Granted                     |  |              |           |   |          |   |       |                         |  |  | 20,963   |   |  | $                       | 5.46 |  |          |  | 3,916   |                         |  | $ | 23.68    |  |  |  |        |   |  |   |       | 
|Exercised                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Cancelled                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|                            |  |              |            |   |          |   |       |                         |  |  |          |   |  |                         |      |  |          |  |         |                         |  |   |          |  |  |  |         |   |  |   |       | 
|December 31, 2003           |  |              |           |   |          |   |       |                         |  |  | 20,963   |   |  | $                       | 5.46 |  |          |  | 3,916   |                         |  | $ | 23.68    |  |  |  |        |   |  |   |       | 
|Granted                     |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  | 16,859  |                         |  | $ | 23.68    |  |  |  |        |   |  |   |       | 
|Exercised                   |  |              |           |   |          |   |       |                         |  |  | (20,963  | ) |  | $                       | 8.95 |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Cancelled                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|                            |  |              |            |   |          |   |       |                         |  |  |          |   |  |                         |      |  |          |  |         |                         |  |   |          |  |  |  |         |   |  |   |       | 
|December 31, 2004           |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  | 20,775  |                         |  | $ | 23.68    |  |  |  |        |   |  |   |       | 
|Granted                     |  |              | 28,385     |   |          | $ | 2.76  |                         |  |  |         |   |  |                         |      |  |          |  | 11,624  |                         |  | $ | 23.68    |  |  |  |        |   |  |   |       | 
|Exercised                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Cancelled                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|                            |  |              |            |   |          |   |       |                         |  |  |          |   |  |                         |      |  |          |  |         |                         |  |   |          |  |  |  |         |   |  |   |       | 
|December 31, 2005           |  |              | 28,385     |   |          | $ | 2.76  |                         |  |  |         |   |  |                         |      |  |          |  | 32,399  |                         |  | $ | 23.68    |  |  |  |        |   |  |   |       | 
|Granted                     |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  | 5,811   |                         |  | $ | 23.68    |  |  |  | 24,605  |   |  | $ | 48.56 | 
|Exercised                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Cancelled                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|                            |  |              |            |   |          |   |       |                         |  |  |          |   |  |                         |      |  |          |  |         |                         |  |   |          |  |  |  |         |   |  |   |       | 
|December 31, 2006           |  |              | 28,385     |   |          | $ | 2.76  |                         |  |  |         |   |  |                         |      |  |          |  | 38,210  |                         |  | $ | 23.68    |  |  |  | 24,605  |   |  | $ | 48.56 | 
|Granted(2)                  |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  | 22,650  |   |  | $ | 48.56 | 
|Exercised                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Cancelled                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Converted upon close of IPO |  |              | 85,465     |   |          | $ | 37.44 |                         |  |  |         |   |  |                         |      |  |          |  | (38,210 | )                       |  | $ | 23.68    |  |  |  | (47,255 | ) |  | $ | 48.56 | 
|                            |  |              |            |   |          |   |       |                         |  |  |          |   |  |                         |      |  |          |  |         |                         |  |   |          |  |  |  |         |   |  |   |       | 
|December 31, 2007           |  |              | 113,850    |   |          | $ | 28.79 |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Granted(2)                  |  |              | 179,328    |   |          | $ | 9.51  |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Exercised                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Cancelled                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|                            |  |              |            |   |          |   |       |                         |  |  |          |   |  |                         |      |  |          |  |         |                         |  |   |          |  |  |  |         |   |  |   |       | 
|December 31, 2008           |  |              | 293,178    |   |          | $ | 17.00 |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Granted(2)(3)               |  |              | 1,540,036  |   |          | $ | 7.86  |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Exercised(3)                |  |              | (264,120   | ) |          | $ | 8.49  |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Cancelled(3)                |  |              | (236,759   | ) |          | $ | 9.53  |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|                            |  |              |            |   |          |   |       |                         |  |  |          |   |  |                         |      |  |          |  |         |                         |  |   |          |  |  |  |         |   |  |   |       | 
|December 31, 2009           |  |              | 1,332,335  |   |          | $ | 9.44  |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Granted(2)(3)               |  |              | 21,046,376 |   |          | $ | 2.19  |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Exercised                   |  |              |           |   |          |   |       |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|Cancelled(3)                |  |              | (153,993   | ) |          | $ | 5.78  |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|                            |  |              |            |   |          |   |       |                         |  |  |          |   |  |                         |      |  |          |  |         |                         |  |   |          |  |  |  |         |   |  |   |       | 
|December 31, 2010           |  |              | 22,224,718 |   |          | $ | 2.60  |                         |  |  |         |   |  |                         |      |  |          |  |        |                         |  |   |          |  |  |  |        |   |  |   |       | 
|                            |  |              |            |   |          |   |       |                         |  |  |          |   |  |                         |      |  |          |  |         |                         |  |   |          |  |  |  |         |   |  |   |       | 



|(1) | Represents weighted-average exercise price per share.
|--- | -----------------------------------------------------

|(2) | See Notes 6 and 7 for discussions relating to the issuance of warrants in 2010, 2009, 2008 and 2007.
|--- | ----------------------------------------------------------------------------------------------------

|(3) | See Note 6 for discussions relating to both the cashless exercises of warrants in 2009 and the cancellation and reissuance of warrants following down round equity
financings.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



At December 31, 2010 and 2009, the weighted-average remaining contractual life of
outstanding warrants was 5.29 and 3.65 years, respectively. All of the warrants outstanding are currently exercisable at the option of the holder into the equivalent number of shares of common stock except for 3,394,309 common stock warrants issued
in conjunction with the September 2010 private placement (see Note 7) and 17,360,400 common stock warrants issued in conjunction with the December 2010 public offering (see Note 7).



|(12) | Related Party Transactions
|---- | --------------------------

The Company shared space with Restore Medical, Inc. (Restore) until Restore was acquired by Medtronic, Inc. in July 2008, a related party
who had directors and stockholders that are officers of the Company. The Company reimbursed Restore for various facility expenses, including property taxes, common area maintenance charges, payroll for the use of personnel, and shipping charges.
Beginning in 2005 the Company also reimbursed Restore for rent expense related to the sublease agreement discussed in Note 13. Total expenses recorded were approximately $294,000 for the year ended December 31, 2008 and approximately $1,125,000
for the period from December 19, 2002 (inception) to December 31, 2010. The majority of expenses are included in general and administrative costs on the consolidated statements of operations. On December 31, 2010 and 2009 the Company
had no outstanding payable balance to Restore.

Prior to 2009, the Company obtained consulting services from Venturi
Development, Inc. (VDI), whose stockholders and officers are investors in the Company. The consultants received cash compensation for services provided. Total expenses recorded, including consulting expenses, were approximately $1,000 for the year
ended December 31, 2008 and approximately $2,680,000 for the period from December 19, 2002 (inception) to December 31, 2010. On December 31, 2010 and 2009 the Company had no outstanding payable balance to VDI.

Private Placements

As discussed in Note 7, on February 19, 2009, the Company entered into securities purchase agreements for the sale of 2,185,066 shares of its common stock, together with warrants to purchase an
aggregate of 1,092,533 shares of its common stock, in a private placement transaction. The following officers, directors and principal stockholders, each purchased shares of common stock and warrants in the private placement at a price of $6.90 per
share and $0.75 per share, respectively. The shares purchased, together with the proceeds, before expenses to the Company, are shown in the table below:



|                       |  |                 |         |  |                   |  |         |                                              |  |   |           | 
|---------------------- |  | --------------- | ------- |  | ----------------- |  | ------- | -------------------------------------------- |  | - | --------- | 
|Beneficial Owner       |  | SharesPurchased |         |  | WarrantsPurchased |  |         | Net Proceeds,
beforeexpenses, to the Company | 
|MPM Capital            |  |                 | 294,252 |  |                   |  | 147,122 |                                              |  | $ | 2,140,669 | 
|Bay City Capital       |  |                 | 274.915 |  |                   |  | 137,456 |                                              |  |   | 2,000,000 | 
|Aberdare Ventures      |  |                 | 206,186 |  |                   |  | 103,092 |                                              |  |   | 1,500,000 | 
|InterWest Partners     |  |                 | 113,067 |  |                   |  | 56,533  |                                              |  |   | 822,563   | 
|Bobby I. Griffin       |  |                 | 34,365  |  |                   |  | 17,182  |                                              |  |   | 250,000   | 
|Mark B. Knudson, Ph.D. |  |                 | 10,997  |  |                   |  | 5,498   |                                              |  |   | 80,000    | 
|Greg S. Lea            |  |                 | 2,750   |  |                   |  | 1,374   |                                              |  |   | 20,000    | 



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



As discussed in Note 7, on September 29, 2010, the Company entered into securities
purchase agreements for the sale of 3,394,309 shares of its Series A Non-Voting Convertible Preferred Stock and 3,394,309 common stock warrants, in a private placement transaction. The following officers, directors and principal stockholders, each
purchased shares of preferred stock at a price of $1.72 per share and common stock warrants at a price of $0.125 per share. The shares purchased, together with the proceeds, before expenses to the Company, are shown in the table below:



|                      |  |                 |           |  |                   |  |           |                                              |  |   |           | 
|--------------------- |  | --------------- | --------- |  | ----------------- |  | --------- | -------------------------------------------- |  | - | --------- | 
|Beneficial Owner      |  | SharesPurchased |           |  | WarrantsPurchased |  |           | Net Proceeds, beforeexpenses, to the Company | 
|MPM Capital           |  |                 | 704,607   |  |                   |  | 704,607   |                                              |  | $ | 1,300,000 | 
|Bay City Capital      |  |                 | 1,626,016 |  |                   |  | 1,626,016 |                                              |  |   | 3,000,000 | 
|Aberdare Ventures     |  |                 | 406,504   |  |                   |  | 406,504   |                                              |  |   | 750,000   | 
|Charter Life Sciences |  |                 | 216,802   |  |                   |  | 216,802   |                                              |  |   | 400,000   | 
|Paul Klingenstein     |  |                 | 16,525    |  |                   |  | 16,525    |                                              |  |   | 30,488    | 
|Nicholas L. Teti, Jr. |  |                 | 10,840    |  |                   |  | 10,840    |                                              |  |   | 20,000    | 

Luke Evnin, Ph.D. is
a director of the Company and is a member of MPM BioVentures III LLC and a manager of MPM Asset Management Investors 2002 BVIII LLC. Carl Goldfischer, M.D. is a director of the Company and is a managing director of Bay City Capital LLC. Paul H.
Klingenstein is a director of the Company and is a managing partner of the Aberdare Funds. Ellen Koskinas served as a director of the Company until her resignation, effective April 3, 2009, and was a venture member of InterWest Management
Partners IX, LLC. Donald C. Harrison, M.D. is a director of the Company and is a managing partner of Charter Life Sciences, L.P. Bobby I. Griffin is a director of the Company. Nicholas L. Teti, Jr. is a director of the Company. Mark B. Knudson,
Ph.D. is the Companys President, Chief Executive Officer and Chairman of the Board. Greg S. Lea is the Companys Senior Vice President and Chief Financial Officer.

Public Offering

As discussed in Note 7, on December 14, 2010,
the Company closed a public offering, selling 17,020,000 shares of common stock together with warrants to purchase an additional 17,020,000 shares of common stock at an aggregate price of $1.75 per share and corresponding warrant. The following
officers, directors and principal stockholders, each purchased shares of common stock at a price of $1.74 per share and common stock warrants at a price of $0.01 per share. The shares purchased, together with the proceeds, before expenses to the
Company, are shown in the table below:



|                       |  |                 |           |  |                   |  |           |                                              |  |   |           | 
|---------------------- |  | --------------- | --------- |  | ----------------- |  | --------- | -------------------------------------------- |  | - | --------- | 
|Beneficial Owner       |  | SharesPurchased |           |  | WarrantsPurchased |  |           | Net Proceeds,
beforeexpenses, to the Company | 
|Bay City Capital       |  |                 | 1,700,000 |  |                   |  | 1,700,000 |                                              |  | $ | 2,975,000 | 
|Mark B. Knudson, Ph.D. |  |                 | 25,000    |  |                   |  | 25,000    |                                              |  |   | 43,750    | 
|Greg S. Lea            |  |                 | 10,000    |  |                   |  | 10,000    |                                              |  |   | 17,500    | 

Carl
Goldfischer, M.D. is a director of the Company and is a managing director of Bay City Capital LLC. Mark B. Knudson, Ph.D. is the Companys President, Chief Executive Officer and Chairman of the Board. Greg S. Lea is the Companys Senior
Vice President and Chief Financial Officer.

Consulting AgreementNicholas L. Teti, Jr.

On May 28, 2009 the Company entered into a one-year consulting agreement effective June 1, 2009 with
Nicholas L. Teti, Jr., who is a member of the board of directors. Pursuant to the agreement, in exchange for



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##### Table of Contents

EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



consulting services provided, Mr. Teti was entitled to receive a consulting fee of $275,000 per year and the reimbursement of reasonable expenses. Mr. Teti also received an option to
purchase 25,000 shares of common stock at $13.80 per share that vests in 36 equal monthly installments following the date of grant. The full grant date fair value of the option grant was approximately $314,000.

On February 10, 2010, the Company entered into a new agreement with Mr. Teti, which was effective as of February 1, 2010
and ending on July 30, 2010. In connection with entering into the new agreement, Mr. Teti and the Company agreed to terminate Mr. Tetis prior consulting agreement. However, the options that Mr. Teti received in connection
with the prior agreement will continue to vest in accordance with their terms. Pursuant to this agreement, in exchange for consulting services provided, Mr. Teti is entitled to receive a consulting fee of $15,416.67 per month and one-third of
Mr. Tetis administrative assistant expenses. Mr. Teti also received an option to purchase 12,500 shares of common stock at $3.24 per share that vests such that one-third of the options vested immediately with the remainder vesting in
36 equal monthly installments following the date of grant.

On August 1, 2010, the Company entered into a new agreement
with Mr. Teti, which was effective from August 1, 2010 through January 31, 2011. Pursuant to this agreement, in exchange for consulting services provided, Mr. Teti is entitled to receive a consulting fee of $7,000 per month and
one-third of Mr. Tetis administrative assistant expenses.

On October 1, 2010, the Company amended the
August 1, 2010 agreement with Mr. Teti, which was effective from October 1, 2010 through January 31, 2011. Pursuant to this agreement, in exchange for up to ten hours of consulting services provided per month, Mr. Teti is
entitled to receive a consulting fee of $175 an hour. Reimbursement of Mr. Tetis administrative assistant expenses was eliminated with this amendment.

Total stock-based compensation expense recorded was approximately $32,000 and $41,000 for the years ended December 31, 2010 and 2009, respectively. In addition to the option grant, the Company paid
Mr. Teti approximately $184,000 and $268,000 in fees and expenses for consulting services rendered during the years ended December 31, 2010 and 2009, respectively.

Consulting AgreementBobby I. Griffin

Effective
September 21, 2006, the Company entered into a consulting agreement with Bobby I. Griffin, who is a member of the board of directors. The consulting agreement provided for the consultant to receive compensation in the form of an option to
purchase common stock for services provided. Pursuant to this consulting agreement, Mr. Griffin received a one-time option grant to purchase 9,157 shares of common stock at $11.46 per share that vested 25% on the first anniversary of the date
the consulting agreement was entered into and 1/36th per month each month thereafter for 36 months. The consulting agreement terminated after one year and does not provide for the forfeiture of any vested or unvested options if after one year
Mr. Griffin stops performing services as a consultant. The Company recorded the options at their fair value on the measurement date. The Company remeasured the fair value of the options granted at each reporting period until performance under
the consulting agreement was completed and the measurement date was reached. The Company expensed the fair value of the options granted over the requisite service period which was the term of the consulting agreement, or one year. Total expense
recorded was approximately $783,000 for the period from December 19, 2002 (inception) to December 31, 2010. All of the expenses were included in general and administrative costs on the consolidated statements of operations.



99



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EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



|(13) | Commitments and Contingencies
|---- | -----------------------------

In September 2005, the Company entered into a three-year non-cancelable operating sublease agreement for office/warehouse space with Restore that expired on September 30, 2008. Effective
October 1, 2008 the Company entered into a seven-year non-cancelable operating lease agreement for office/warehouse space. The lease expires on September 30, 2015 with monthly base rent ranging from $19,570 to $24,643. Total rent expense
recognized for the years ended December 31, 2010, 2009 and 2008 was $270,872, $270,872 and $157,910, respectively, and $1,082,184 for the period from December 19, 2002 (inception) to December 31, 2010. Facility related expenses are
included as general and administrative costs on the consolidated statements of operations.

The following is a schedule of
total future minimum lease payments due as of December 31, 2010:



|                          |  |   |           | 
|------------------------- |  | - | --------- | 
|Years ending December 31: |  |   |          
|2011                      |  | $ | 274,564   | 
|2012                      |  |   | 280,055   | 
|2013                      |  |   | 285,656   | 
|2014                      |  |   | 291,369   | 
|2015                      |  |   | 221,789   | 
|                          |  |   |           | 
|                          |  | $ | 1,353,433 | 
|                          |  |   |           | 

The Company is exposed to product liability claims that are inherent in the testing, production, marketing
and sale of medical devices. Management believes any losses that may occur from these matters are adequately covered by insurance, and the ultimate outcome of these matters will not have a material effect on the Companys financial position or
results of operations. The Company is not currently a party to any litigation and is not aware of any pending or threatened litigation that could have a material adverse effect on the Companys business, operating results or financial
condition.

In 2005, EnteroMedics entered into an exclusive collaborative obesity device research and development agreement
with the Mayo Foundation for Medical Education and Research (Mayo Foundation), Rochester, Minnesota. Through this agreement, EnteroMedics will collaborate with a group of physicians and researchers at Mayo Clinic in the field of obesity. Under the
terms of this five-year agreement, EnteroMedics and this group of Mayo specialists will collectively work toward the development of new and innovative medical devices for the treatment of obesity. The agreement also includes a similar collaboration
for the development of products to address a wide variety of disorders susceptible to treatment by electrically blocking neural impulses on the vagus nerve.

Under this agreement, the Company issued 36,630 shares of common stock to the Mayo Foundation in 2005 and recorded $100,000 as deferred compensation, which was amortized over the term of the five-year
agreement and was fully amortized in 2010. Unamortized deferred compensation related to the agreement was $1,667 at December 31, 2009. In accordance with the agreement, upon the closing of the IPO in November 2007, the Company was also
obligated to issue 34,341 shares of common stock as consideration to the Mayo Foundation and recorded a one-time stock-based compensation expense of $1.7 million. The stock-based compensation expense is recorded on the consolidated statements of
operations as research and development expense.

The Company may also be obligated to pay the Mayo Foundation, contingent upon
the occurrence of certain future events, earned royalty payments, including a minimum annual royalty as defined by the agreement, for the commercial sale of products developed and patented by the Mayo Foundation, jointly patented by the Company



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EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



and the Mayo Foundation, or a product where the Mayo Foundation provided know-how as defined by the agreement. If no products are patented, the minimum royalty is not due. The Mayo Foundation
receives an annual $250,000 retainer fee which commenced in 2005 and continued through January 2009. The annual retainer fee paid to the Mayo Foundation is recorded on the consolidated statements of operations as research and development expense.

On March 11, 2010, the Company entered into Amendment No. 1 (the Amendment) to the License Agreement by and between
the Mayo Foundation and the Company, effective as of February 3, 2005 (as amended, the License Agreement). The Amendment was effective as of February 3, 2010 (the Effective Date). The Amendment extended the Companys collaboration
with the Mayo Foundation pursuant to the License Agreement for a period of two years from the Effective Date. Pursuant to the Amendment, the Mayo Foundation granted the Company certain royalty-bearing, worldwide exclusive and non-exclusive licenses
and committed to the joint collaboration between the Company and a designated group of physicians and researchers at the Mayo Clinic for the development and testing of products for the treatment of obesity, including devices that use electrical
signaling to block the vagal nerve, and for the treatment of other gastrointestinal diseases, solely using devices that use electrical signaling to block the vagal nerve. Pursuant to the Amendment, the Mayo Foundation will receive an annual retainer
of $100,000 in 2010 and 2011. The Company may also be obligated to pay the Mayo Foundation, contingent upon the occurrence of certain future events, earned royalty payments, including a minimum annual royalty as defined in the License Agreement, for
the commercial sale of products developed and patented by the Mayo Foundation, jointly patented by the Company and the Mayo Foundation, or a product where the Mayo Foundation provided know-how as defined by the License Agreement. If no products are
patented, the minimum royalty is not due. The Amendment was further amended on January 15, 2011 with Amendment No. 2. Under the terms of Amendment No. 2, the annual retainer the Mayo Foundation will receive for 2011 was reduced to
$75,000. No other terms of the Amendment were changed by Amendment No. 2.

In December 2007, EnteroMedics entered into a
second research and development agreement with the Mayo Foundation. In accordance with the three year agreement, the Mayo Foundation receives an annual $50,000 retainer fee. The annual retainer fee paid to the Mayo Foundation is recorded on the
consolidated statements of operations as research and development expense. The Company may also be obligated to pay the Mayo Foundation, contingent upon the occurrence of certain future events as defined by the agreement, consideration with respect
to licensed know-how regarding product development and testing of products and rights to licensed patents, where the Mayo Foundation provided know-how as defined by the agreement.



|(14) | Retirement Plan
|---- | ---------------

The
Company has a 401(k) profit-sharing plan that provides retirement benefits to employees. Eligible employees may contribute a percentage of their annual compensation, subject to Internal Revenue Service limitations. The Companys matching is at
the discretion of the Companys board of directors. For the years ended December 31, 2010, 2009 and 2008 and for the period from December 19, 2002 (inception) to December 31, 2010, the Company did not provide any matching of
employees contributions.



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EnteroMedics Inc.

(A development stage company)

Notes to Consolidated Financial Statements (Continued)



|(15) | Quarterly Data (unaudited)
|---- | --------------------------

The following table represents certain unaudited quarterly information for each of the eight quarters in the period ended
December 31, 2010. In managements opinion, this information has been prepared on the same basis as the audited consolidated financial statements and includes all the adjustments necessary to fairly state the unaudited quarterly results of
operations (in thousands, except per share data).



|                                     |  |              |        |   |               |   |         |              |  |   |               |   |  |   |        |  
|------------------------------------ |  | ------------ | ------ | - | ------------- | - | ------- | ------------ |  | - | ------------- | - |  | - | ------ | -
|                                     |  | FirstQuarter |        |   | SecondQuarter |   |         | ThirdQuarter |  |   | FourthQuarter |  
|2010:                                |  |              |        |   |               |   |         |              |  |   |               |   |  |   |        |  
|Net loss                             |  | $            | (4,748 | ) |               | $ | (4,259  | )            |  | $ | (4,385        | ) |  | $ | (3,955 | )
|Basic and diluted net loss per share |  | $            | (0.66  | ) |               | $ | (0.57   | )            |  | $ | (0.59         | ) |  | $ | (0.34  | )
|2009:                                |  |              |        |   |               |   |         |              |  |   |               |   |  |   |        |  
|Net loss                             |  | $            | (6,669 | ) |               | $ | (10,362 | )            |  | $ | (12,008       | ) |  | $ | (2,890 | )
|Basic and diluted net loss per share |  | $            | (1.81  | ) |               | $ | (2.07   | )            |  | $ | (2.40         | ) |  | $ | (0.47  | )



|(16) | Subsequent Events
|---- | -----------------

On
March 3, 2011 the Company entered into a Fourth Amendment (the Fourth Amendment) to the Loan Agreement with SVB. The Fourth Amendment modifies the repayment terms of the Term Loan such that beginning April 1, 2011 through
September 30, 2011, the Company is only required to make interest only monthly payments on the Term Loan. Then, beginning on October 1, 2011, the remaining balance due on the Term Loan will amortize over 30 equal payments of principal and
interest, which will be payable monthly. In addition, the Fourth Amendment amends the interest rate due effective March 1, 2011 on the remaining principal amount of the Term Loan from 11.0% to a fixed annual rate of 6.25% if the liquidity ratio
is greater than 1.50:1.00 and no Event of Default (as defined in the Loan Agreement) has occurred or is continuing or 9.00% if the liquidity ratio is less than 1.50:1.00 or an Event of Default has occurred or is continuing, payable monthly. The
Fourth Amendment also reinstates the financial covenant related to the liquidity ratio, which is not permitted to be less than 1.00:1.00, and adds an EBITDA test should the liquidity ratio fall below 1.50:1.00. The EBITDA test requires that the
trailing 90 day actual EBITDA be more favorable than 110% of the projected EBITDA for the same period if the projected EBITDA for such period was less than zero or at least 90% of the projected EBITDA for the same period if the projected EBITDA for
such period was greater than or equal to zero. In addition, the Fourth Amendment amends the prepayment terms of the Loan Agreement such that a Make-Whole Premium equal to 1% of the amount of the Term Loan being prepaid will be due for any voluntary
or required prepayment of the Term Loan occurring before the first anniversary of the Fourth Amendment, unless the Term Loan is being voluntarily prepaid and replaced with a new SVB facility. Lastly, the Fourth Amendment eliminates SVBs
springing lien on the Companys intellectual property, the New Capital Transactions requirement and the requirement of the Third Amendment to maintain a blocked cash collateral account with funds equal to the principal balance outstanding.



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|ITEM 9. | CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
|------- | ------------------------------------------------------------------------------------

None.



|ITEM 9A. | CONTROLS AND PROCEDURES
|-------- | -----------------------

Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this report (the Evaluation Date), we carried out an evaluation, under the supervision and with the participation of management, including the Chief Executive
Officer and the Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) of the Securities Exchange Act of 1934, as amended (the Exchange Act)). Based upon that
evaluation, the Chief Executive Officer and the Chief Financial Officer concluded that, as of the Evaluation Date, our disclosure controls and procedures were effective to ensure that information required to be disclosed in the reports that we file
or submit under the Exchange Act is (i) recorded, processed, summarized and reported within the time periods specified in applicable rules and forms, and (ii) accumulated and communicated to our management, including our Chief Executive
Officer and Chief Financial Officer, to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial
Reporting

There was no change in our internal control over financial reporting (as defined in Rule 13a-15(f) of the
Exchange Act) that occurred during our fourth quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Managements Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting for the Company as defined
in Rules 13a-15(c) and 15d-15(c) of the Securities Exchange Act of 1934. Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of
financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America.

The Companys internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly
reflect the transactions and dispositions of the assets of the Company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting
principles, and that receipts and expenditures of the Company are being made only in accordance with authorizations of management and directors of the Company; and (iii) provide reasonable assurance regarding prevention or timely detection of
unauthorized acquisition, use, or disposition of the Companys assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Therefore, even those systems of internal control determined to be effective can
provide only reasonable assurance with respect to financial statement preparation and presentation.

Management has evaluated
the design and operating effectiveness of our internal control over financial reporting as of December 31, 2010 in accordance with Section 404,Management Assessment of Internal Controls, of the Sarbanes-Oxley Act of 2002
utilizing the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission inInternal ControlIntegrated Framework. Based upon the evaluation, management has concluded that our internal control over
financial reporting was effective as of December 31, 2010.



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This annual report does not include an attestation report of the Companys registered
public accounting firm regarding internal control over financial reporting. Managements report was not subject to attestation by the Companys registered public accounting firm pursuant to permanent exemption rules of the Dodd-Frank
Wall Street Reform and Consumer Protection Act that permit the Company to provide only managements report in this annual report.



|ITEM 9B. | OTHER INFORMATION
|-------- | -----------------

On March 3, 2011 we entered into a fourth amendment to the Loan Agreement with Silicon Valley Bank. Please see Note 16 to our consolidated financial statements included in Item 8 of this
Annual Report on Form 10-K for a description of the material terms and conditions of the fourth amendment.

Given Daniel
Cohens increasing responsibilities outside of the Company, on March 7, 2011 the board of directors determined that Mr. Cohen ceased to be an executive officer of the Company. Mr. Cohen will continue to provide services to the Company on a part
time basis.



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PART III.

Certain information required by Part III is omitted from this report, and is incorporated by reference to our Definitive Proxy
Statement to be filed with the Securities and Exchange Commission pursuant to Regulation 14A (the Proxy Statement) in connection with our 2011 Annual Meeting of Stockholders.



|ITEM 10. | DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
|-------- | ------------------------------------------------------

The information required by this Item concerning our directors and executive officers is hereby incorporated by reference to the sections
of our Proxy Statement under the headings Nominees, Executive Officers, Section 16(a) Beneficial Ownership Reporting Compliance and Board Meetings and CommitteesAudit Committee.

We have adopted a code of business conduct and ethics, which applies to all directors and employees, including executive officers,
including, without limitation, our principal executive officer, principal financial officer, principal accounting officer and persons performing similar functions. A copy of this code of business conduct and ethics is available on our website at
www.enteromedics.com (under Investors, Corporate Governance) and we intend to satisfy the disclosure requirement under Item 5.05 of Form 8-K regarding any waivers from or amendments to any provision of the
code of business conduct and ethics by disclosing such information on the same website.

In addition, we intend to promptly
disclose (1) the nature of any amendment to our code of business conduct and ethics that applies to our principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar
functions and (2) the nature of any waiver, including an implicit waiver, from a provision of our code of business conduct and ethics that is granted to one of these specified officers, the name of such person who is granted the waiver and the
date of the waiver on our website in the future.



|ITEM 11. | EXECUTIVE COMPENSATION
|-------- | ----------------------

The information required by this Item is hereby incorporated by reference to the sections of our Proxy Statement entitled Executive Compensation, Compensation Committee Interlocks and
Insider Participation and Compensation Committee Report.



|ITEM 12. | SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
|-------- | ----------------------------------------------------------------------------------------------

(a) Equity Compensation Plans

The following table sets forth information as of December 31, 2010, with respect to our equity compensation plans:



|                                                           |  |                                                                                       |         |     |                                                                        |   |      |                                                                                                                                         |  |  |           |    
|---------------------------------------------------------- |  | ------------------------------------------------------------------------------------- | ------- | --- | ---------------------------------------------------------------------- | - | ---- | --------------------------------------------------------------------------------------------------------------------------------------- |  |  | --------- | ---
|Plan Category                                              |  | Number ofSecurities to beIssued UponExercise ofOutstandingOptions, Warrantsand
Rights |         |     | Weighted-AverageExercise Priceof OutstandingOptions,Warrants
andRights |   |      | Number of SecuritiesRemaining Availablefor Future IssuanceUnder EquityCompensation
Plans(Excluding SecuritiesReflected in SecondColumn) | 
|Equity compensation plans approved by security holders     |  |                                                                                       | 812,515 | (1) |                                                                        | $ | 5.60 |                                                                                                                                         |  |  | 1,423,361 | (2)
|Equity compensation plans not approved by security holders |  |                                                                                       |        |     |                                                                        |   |     |                                                                                                                                         |  |  |          |    
|                                                           |  |                                                                                       |         |     |                                                                        |   |      |                                                                                                                                         |  |  |           |    
|Total                                                      |  |                                                                                       | 812,515 |     |                                                                        | $ | 5.60 |                                                                                                                                         |  |  | 1,423,361 |    
|                                                           |  |                                                                                       |         |     |                                                                        |   |      |                                                                                                                                         |  |  |           |    



|(1) | Consists of options awarded under the 2003 Stock Incentive Plan.
|--- | ----------------------------------------------------------------

|(2) | Represents the maximum number of shares of common stock available to be awarded as of December 31, 2010.
|--- | --------------------------------------------------------------------------------------------------------



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(b) Security Ownership

The information required by this Item is hereby incorporated by reference to the section of our Proxy Statement entitled Security Ownership of Certain Beneficial Owners and Management.



|ITEM 13. | CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE
|-------- | -------------------------------------------------------------------------

The information required by this Item is hereby incorporated by reference to the section of our Proxy Statement entitled Certain
Relationships and Related Transactions, and Director Independence.



|ITEM 14. | PRINCIPAL ACCOUNTANT FEES AND SERVICES
|-------- | --------------------------------------

The information required by this Item is hereby incorporated by reference to the section of our Proxy Statement entitled Principal Accountant Fees and Services and Administration of
Engagement of Independent Auditor.



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PART IV.



|ITEM 15. | EXHIBITS, FINANCIAL STATEMENTS AND FINANCIAL STATEMENT SCHEDULES
|-------- | ----------------------------------------------------------------

(a) Financial Statements and Schedules:    Consolidated Financial Statements for the three years ended
December 31, 2010 are included in Part II, Item 8. All schedules are omitted because they are not applicable or the required information is shown in the consolidated financial statements or notes thereto.

(b) Exhibits:    The list of exhibits on the Exhibit Index on page 109 of this report is incorporated
herein by reference.



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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this
report to be signed on its behalf by the undersigned, thereunto duly authorized.



ENTEROMEDICS INC.By:

/s/    MARK B. KNUDSON,
PH.D.Mark B. Knudson, Ph.D.President and Chief Executive Officer


Dated: March 7, 2011

POWERS OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Mark B. Knudson and Greg S.
Lea, and each of them, as his true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him and in his name, place and stead, in any and all capacities, to sign any and all amendments to this report, and to
file the same, with exhibits thereto and other documents in connection therewith, with the Securities Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every
act and thing requisite and necessary to be done, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them or their substitutes may lawfully do
or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has
been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.



|                                                       |  |                                                                                                |  |              
|------------------------------------------------------ |  | ---------------------------------------------------------------------------------------------- |  | -------------
|Signature                                              |  | Title                                                                                          |  | Date         
|                                                       |  |                                                                                               
|/S/    MARK B. KNUDSON,
PH.D. Mark B. Knudson, Ph.D.   |  | President, Chief Executive Officer,
Chairman and Director (principal executive officer)        |  | March 7, 2011
|                                                       |  |                                                                                               
|/S/    GREG S.
LEA Greg S. Lea                         |  | Senior Vice President and Chief Financial Officer
(principal financial and accounting officer) |  | March 7, 2011
|                                                       |  |                                                                                               
|/S/    LUKE EVNIN,
PH.D. Luke Evnin, Ph.D.             |  | Director                                                                                       |  | March 7, 2011
|                                                       |  |                                                                                               
|/S/    CATHERINE
FRIEDMAN Catherine Friedman           |  | Director                                                                                       |  | March 7, 2011
|                                                       |  |                                                                                               
|/S/    CARL GOLDFISCHER,
M.D. Carl Goldfischer, M.D.   |  | Director                                                                                       |  | March 7, 2011
|                                                       |  |                                                                                               
|/S/    BOBBY I.
GRIFFIN Bobby I. Griffin               |  | Director                                                                                       |  | March 7, 2011
|                                                       |  |                                                                                               
|/S/    DONALD C.
HARRISON M.D. Donald C. Harrison M.D. |  | Director                                                                                       |  | March 7, 2011
|                                                       |  |                                                                                               
|/S/    PAUL H.
KLINGENSTEIN Paul H. Klingenstein       |  | Director                                                                                       |  | March 7, 2011
|                                                       |  |                                                                                               
|/S/    NICHOLAS L. TETI,
JR. Nicholas L. Teti, Jr.     |  | Director                                                                                       |  | March 7, 2011
|                                                       |  |                                                                                               
|/S/    JON
T. TREMMEL Jon T. Tremmel                   |  | Director                                                                                       |  | March 7, 2011



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EXHIBIT INDEX



|              |  |                                                                                                                                                                                                                                                                                                                                                                   
|------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |  | Description of Document                                                                                                                                                                                                                                                                                                                                           
|3.1           |  | Fifth Amended and Restated Certificate of Incorporation of the Company. (Incorporated herein by reference to Exhibit 3.2 to Amendment No. 6 to the Companys Registration
Statement on Form S-1 filed on November 9, 2007 (File No. 333-143265)).                                                                                                                 
|              | 
|3.2           |  | Certificate of Amendment to the Fifth Amended and Restated Certificate of Incorporation of the Company. (Incorporated herein by reference to Exhibit 3.2 to the Companys
Quarterly Report on Form 10-Q filed on August 7, 2009 (File No. 1-33818)).                                                                                                              
|              | 
|3.3           |  | Certificate of Amendment to the Fifth Amended and Restated Certificate of Incorporation of the Company. (Incorporated herein by reference to Exhibit 3.1 to the Companys
Current Report on Form 8-K filed on July 13, 2010 (File No. 1-33818)).                                                                                                                  
|              | 
|3.4           |  | Certificate of Designations, dated as of September 29, 2010. (Incorporated herein by reference to Exhibit 10.4 to the Companys Current Report on Form 8-K filed on October 5,
2010 (File No. 1-33818)).                                                                                                                                                          
|              | 
|3.5           |  | Amended and Restated Bylaws of the Company, as currently in effect. (Incorporated herein by reference to Exhibit 3.4 to Amendment No. 1 to the Companys Registration Statement
on Form S-1 filed on July 6, 2007 (File No. 333-143265)).                                                                                                                         
|              | 
|4.1           |  | Amended and Restated Investors Rights Agreement, dated as of July 6, 2006, by and between the Company and the parties named therein. (Incorporated herein by reference to
Exhibit 4.2 to the Companys Registration Statement on Form S-1 filed on May 25, 2007 (File No. 333-143265)).                                                                          
|              | 
|10.1          |  | Licensing Agreement, by and between Mayo Foundation for Medical Education and Research and the Company, dated February 3, 2005. (Incorporated herein by reference to Exhibit 10.1 to
Amendment No. 2 to the Companys Registration Statement on Form S-1 filed on August 14, 2007 (File No. 333-143265)).                                                         
|              | 
|10.2          |  | Loan and Security Agreement, dated December 1, 2004, between the Company and Venture Lending and Leasing IV, Inc. (Incorporated herein by reference to Exhibit 10.3 to the
Companys Registration Statement on Form S-1 filed on May 25, 2007 (File No. 333-143265)).                                                                                             
|              | 
|10.3          |  | Supplement to the Loan and Security Agreement, dated December 1, 2004, between the Company and Venture Lending and Leasing IV, Inc. (Incorporated herein by reference to Exhibit 10.4
to the Companys Registration Statement on Form S-1 filed on May 25, 2007 (File No. 333-143265)).                                                                           
|              | 
|10.4          |  | Amendment No. 1, dated as of September 29, 2005, to Supplement to the Loan and Security Agreement, dated December 1, 2004, between the Company and Venture Lending and Leasing IV,
Inc. (Incorporated herein by reference to Exhibit 10.5 to the Companys Registration Statement on Form S-1 filed on May 25, 2007 (File No. 333-143265)).                       
|              | 
|10.5          |  | Loan and Security Agreement, dated as of May 17, 2007, between the Company, Venture Lending and Leasing IV, Inc. and Venture Lending and Leasing V, Inc. (Incorporated herein by
reference to Exhibit 10.6 to the Companys Registration Statement on Form S-1 filed on May 25, 2007 (File No. 333-143265)).                                                      
|              | 
|10.6          |  | Supplement to the Loan and Security Agreement, dated as of May 17, 2007, between the Company, Venture Lending and Leasing IV, Inc. and Venture Lending and Leasing V, Inc.
(Incorporated herein by reference to Exhibit 10.7 to the Companys Registration Statement on Form S-1 filed on May 25, 2007 (File No. 333-143265)).                                    
|              | 
|10.6A         |  | Amendment No. 1 to Supplement to Loan and Security Agreement dated August 28, 2007 between the Company, Venture Lending and Leasing IV, Inc. and Venture Lending and Leasing V, Inc.
(Incorporated herein by reference to Exhibit 10.7A to Amendment No. 3 to the Companys Registration Statement on Form S-1 filed on September 11, 2007 (File No. 333-143265)).



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|              |  |                                                                                                                                                                                                                                                                                                                            
|------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |  | Description of Document                                                                                                                                                                                                                                                                                                    
|10.7         |  | Executive Employment Agreement, dated June 22, 2005, by and between the Company and Mark B. Knudson. (Incorporated herein by reference to Exhibit 10.8 to the
Companys Registration Statement on Form S-1 filed on May 25, 2007 (File No. 333-143265)).                                                                   
|              | 
|10.8         |  | Amended and Restated Executive Employment Agreement, dated May 4, 2009, by and between the Company and Mark B. Knudson. (Incorporated herein by reference to Exhibit 10.3 to the
Companys Quarterly Report on Form 10-Q filed on May 7, 2009 (File No. 1-33818)).                                                         
|              | 
|10.9         |  | Executive Employment, dated May 21, 2007, by and between the Company and Greg Lea. (Incorporated herein by reference to Exhibit 10.9 to the Companys Registration Statement on
Form S-1 filed on May 25, 2007 (File No. 333-143265)).                                                                                     
|              | 
|10.10        |  | Amendment No. 1 to Executive Employment Agreement dated May 21, 2007, by and between the Company and Greg S. Lea. (Incorporated herein by reference to Exhibit 10.1 to the
Companys Current Report on Form 8-K filed on April 19, 2010 (File No. 1-33818)).                                                               
|              | 
|10.11        |  | Executive Employment Agreement, dated February 9, 2007, by and between the Company and Adrianus Donders. (Incorporated herein by reference to Exhibit 10.10 to the Companys
Registration Statement on Form S-1 filed on May 25, 2007 (File No. 333-143265)).                                                              
|              | 
|10.12        |  | Executive Employment Agreement, dated August 5, 2008, by and between the Company and Katherine S. Tweden. (Incorporated herein by reference to Exhibit 10.4 to the Companys
Quarterly Report on Form 10-Q filed on May 7, 2009 (File No. 1-33818)).                                                                       
|              | 
|10.13        |  | 2003 Stock Incentive Plan, as amended. (Incorporated herein by reference to Exhibit 10.6 to the Companys Quarterly Report on Form 10-Q filed on November 8, 2010 (File No.
1-33818)).                                                                                                                                     
|              | 
|10.14        |  | Standard form of Incentive Stock Option Agreement pursuant to the 2003 Stock Incentive Plan. (Incorporated herein by reference to Exhibit 10.13 to the Companys Registration
Statement on Form S-1 filed on May 25, 2007 (File No. 333-143265)).                                                                          
|              | 
|10.15        |  | Standard form of Non-Incentive Stock Option Agreement pursuant to the 2003 Stock Incentive Plan. (Incorporated herein by reference to Exhibit 10.14 to the Companys
Registration Statement on Form S-1 filed on May 25, 2007 (File No. 333-143265)).                                                                      
|              | 
|10.16        |  | Form of Non-Incentive Stock Option Agreement for the new options granted October 29, 2010 pursuant to the option exchange program. (Incorporated herein by reference to Exhibit 10.7
to the Companys Quarterly Report on Form 10-Q filed on November 8, 2010 (File No. 1-33818)).                                         
|              | 
|10.17        |  | Standard form of Restricted Stock Agreement. (Incorporated herein by reference to Exhibit 10.15 to the Companys Registration Statement on Form S-1 filed on May 25, 2007 (File
No. 333-143265)).                                                                                                                          
|              | 
|10.18        |  | Management Incentive Plan. (Incorporated herein by reference to Exhibit 10.1 to the Companys Current Report on Form 8-K filed on February 12, 2008 (File No.
1-33818)).                                                                                                                                                   
|              | 
|10.19         |  | Form of Indemnification Agreement entered into by and between the Company and each of its executive officers and directors. (Incorporated herein by reference to Exhibit 10.17 to
Amendment No. 1 to the Companys Registration Statement on Form S-1 filed on July 6, 2007 (File No. 333-143265)).                        
|              | 
|10.20         |  | Consulting Agreement, dated September 21, 2006, by and between the Company and Bobby I. Griffin. (Incorporated herein by reference to Exhibit 10.19 to Amendment No. 1 to the
Companys Registration Statement on Form S-1 filed on July 6, 2007 (File No. 333-143265)).                                                   
|              | 
|10.21         |  | Loan and Security Agreement, dated November 18, 2008, between the Company and Silicon Valley Bank, Compass Horizon Funding Company LLC, and Venture Lending & Leasing V, Inc.
(Incorporated herein by reference to Exhibit 10.1 to the Companys Current Report on Form 8-K filed on November 24, 2008 (File No. 1-33818)).



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|              |  |                                                                                                                                                                                                                                                                                                                                                                  
|------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |  | Description of Document                                                                                                                                                                                                                                                                                                                                          
|10.22         |  | Form of Warrant to purchase stock under Loan and Security Agreement, dated November 18, 2008, between the Company and Silicon Valley Bank, Compass Horizon Funding Company LLC, and
Venture Lending & Leasing V, Inc. (Incorporated herein by reference to Exhibit 10.20 to the Companys Annual Report on Form 10-K filed on March 12, 2009 (File No. 1-33818)).
|              | 
|10.23         |  | Form of Securities Purchase Agreement, dated February 19, 2009, by and between the Company and several accredited investors. (Incorporated herein by reference to Exhibit 10.1 to the
Companys Current Report on Form 8-K filed on February 25, 2009 (File No. 1-33818)).                                                                                       
|              | 
|10.24         |  | Form of Warrant, dated February 24, 2009, by and between the Company and several accredited investors. (Incorporated herein by reference to Exhibit 10.2 to the Companys
Current Report on Form 8-K filed on February 25, 2009 (File No. 1-33818)).                                                                                                             
|              | 
|10.25         |  | Lease Agreement, effective October 1, 2008, by and between the Company and Roseville Properties Management Company. (Incorporated herein by reference to Exhibit 10.23 to the
Companys Annual Report on Form 10-K filed on March 12, 2009 (File No. 1-33818)).                                                                                                  
|              | 
|10.26         |  | Consulting Agreement, dated June 1, 2009, by and between the Company and Nicholas L. Teti, Jr. (Incorporated herein by reference to Exhibit 10.1 to the Companys Quarterly
Report on Form 10-Q filed on August 7, 2009 (File No. 1-33818)).                                                                                                                     
|              | 
|10.27         |  | Consulting Agreement, dated as of February 1, 2010, by and between the Company and Nicholas L. Teti, Jr. (Incorporated herein by reference to Exhibit 10.26 to the
Companys Annual Report on Form 10-K filed on March 29, 2010 (File No. 1-33818)).                                                                                                             
|              | 
|10.28*        |  | Consulting Agreement, dated as of August 1, 2010, by and between the Company and Nicholas L. Teti, Jr.                                                                                                                                                                                                                                                           
|              | 
|10.29*        |  | Consulting Agreement, dated as of October 1, 2010, by and between the Company and Augustus Advisors, Inc.                                                                                                                                                                                                                                                        
|              | 
|10.30         |  | Securities Purchase Agreement, dated as of October 2, 2009. (Incorporated herein by reference to Exhibit 10.1 to the Companys Current Report on Form 8-K filed on October 5,
2009 (File No. 1-33818)).                                                                                                                                                          
|              | 
|10.31         |  | Securities Purchase Agreement, dated as of January 14, 2010. (Incorporated herein by reference to Exhibit 10.1 to the Companys Current Report on Form 8-K filed on January 15,
2010 (File No. 1-33818)).                                                                                                                                                        
|              | 
|10.32         |  | First Amendment to Loan and Security Agreement, dated as of February 8, 2010, by and between Silicon Valley Bank and the Company. (Incorporated herein by reference to Exhibit
10.1 to the Companys Current Report on Form 8-K filed on February 12, 2010 (File No. 1-33818)).                                                                                  
|              | 
|10.33         |  | Amendment No. 1, effective as of February 3, 2010, to License Agreement between Mayo Foundation for Medical Education and Research and the Company. (Incorporated herein by reference
to Exhibit 10.1 to the Companys Current Report on Form 8-K filed on March 17, 2010 (File No. 1-33818)).                                                                   
|              | 
|10.34*        |  | Amendment No. 2, effective as of January 4, 2011, to License Agreement between Mayo Foundation for Medical Education and Research and the Company.                                                                                                                                                                                                               
|              | 
|10.35         |  | Second Amendment to Loan and Security Agreement, dated as of July 8, 2010, by and between Silicon Valley Bank and the Company. (Incorporated herein by reference to Exhibit 10.1
to the Companys Current Report on Form 8-K filed on July 13, 2010 (File No. 1-33818)).                                                                                         
|              | 
|10.36         |  | Securities Purchase Agreement, dated as of September 29, 2010. (Incorporated herein by reference to Exhibit 10.1 to the Companys Current Report on Form 8-K filed on October 5,
2010 (File No. 1-33818)).                                                                                                                                                       



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|              |  |                                                                                                                                                                                                                                                                                                    
|------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |  | Description of Document                                                                                                                                                                                                                                                                            
|10.37         |  | Form of Up Front Warrant, dated September 29, 2010, by and between the Company and several accredited investors. (Incorporated herein by reference to Exhibit 10.2 to the
Companys Current Report on Form 8-K filed on October 5, 2010 (File No. 1-33818)).                                       
|              | 
|10.38         |  | Form of Conversion Warrant. (Incorporated herein by reference to Exhibit 10.3 to the Companys Current Report on Form 8-K filed on October 5, 2010
(File No. 1-33818)).                                                                                                                            
|              | 
|10.39         |  | Third Amendment to Loan and Security Agreement, dated as of November 4, 2010, by and between Silicon Valley Bank and the Company. (Incorporated herein by reference to Exhibit 10.8
to the Companys Quarterly Report on Form 10-Q filed on November 8, 2010 (File No. 1-33818)).                  
|              | 
|10.40         |  | Form of Common Stock Warrant, dated as of December 14, 2010, by and between the Company and several accredited investors. (Incorporated herein by reference to Exhibit 4.3 to
Amendment No. 1 to the Companys Registration Statement on Form S-1 filed on December 6, 2010 (File No. 333-170503)).
|              | 
|10.41         |  | Form of Underwriter Warrant, dated as of December 14, 2010, by and between the Company and Craig-Hallum Capital Group LLC. (Incorporated herein by reference to Exhibit 10.1 to the
Companys Current Report on Form 8-K filed on December 14, 2010 (File No. 1-33818)).                           
|              | 
|10.42*        |  | Fourth Amendment to Loan and Security Agreement, dated as of March 3, 2011, by and between Silicon Valley Bank and the Company.                                                                                                                                                                    
|              | 
|14.1          |  | Code of Conduct and Ethics of the Company. (Incorporated herein by reference to Exhibit 14.1 to the Companys Registration Statement on Form S-1 filed on May 25, 2007 (File No.
333-143265)).                                                                                                     
|              | 
|23.1*         |  | Consent of Deloitte & Touche LLP, Independent Registered Public Accounting Firm.                                                                                                                                                                                                                   
|              | 
|24.1*         |  | Power of Attorney (included on signature page to this Form 10-K).                                                                                                                                                                                                                                  
|              | 
|31.1*         |  | Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                                
|              | 
|31.2*         |  | Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                                
|              | 
|32.1*         |  | Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                                
|              | 
|32.2*         |  | Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                                



|* | Filed herewith.
|- | ---------------

| | Indicates management contract or compensation plan or agreement.
|- | ----------------------------------------------------------------



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