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AtriCure, Inc.

atrc · NASDAQ Healthcare
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Employees 1300
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FY2008 Annual Report · AtriCure, Inc.
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K
È ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE

ACT OF 1934
For the fiscal year ended December 31, 2008

‘ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

EXCHANGE ACT OF 1934

Commission File Number 000-51470

AtriCure, Inc.

(Exact name of registrant as specified in its charter)

DELAWARE
(State or other jurisdiction of
incorporation or organization)

34-1940305
(I.R.S. Employer
Identification Number)

6033 Schumacher Park Drive, West Chester, OH
(Address of principal executive offices)

45069
(Zip Code)
Registrant’s telephone number including area code: (513) 755-4100
Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Name of each exchange on which registered

Common Stock, $.001 Par Value Per Share

NASDAQ Global Market

Securities Registered Pursuant to Section 12(g) of the Act:
None
(Title of Class)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities

Act. Yes ‘ No È

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the

Act. Yes ‘ No È

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 È No ‘

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this
chapter) is not contained herein, and will not be contained, to the best of the 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 definition of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in
Rule 12b-2 of the Exchange Act.
Large Accelerated Filer ‘ Accelerated Filer È Non-Accelerated Filer ‘

Smaller reporting company ‘

(Do not check if smaller reporting company)

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

Act). Yes ‘ No È

The aggregate market value of the voting Common Stock held by non-affiliates of the registrant, based upon the closing

sale price of the Common Stock on June 30, 2008, as reported on the NASDAQ Global Market, was $105.2 million.

As of March 2, 2009, there were 14,335,993 shares of Common Stock, $.001 par value, outstanding.

DOCUMENTS INCORPORATED BY REFERENCE
Items 10, 11, 12, 13 and 14 of Part III of this Form 10-K incorporate information by reference from the registrant’s

definitive proxy statement to be filed with the Securities and Exchange Commission within 120 days after the close of the
fiscal year covered by this Form 10-K.

TABLE OF CONTENTS

PART I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 1: Business . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 1A: Risk Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 1B: Unresolved Staff Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 2: Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 3: Legal Proceedings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 4: Submission of Matters to a Vote of Security Holders . . . . . . . . . . . . . . . . . . . . . . .

PART II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 5: Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer
Purchases of Equity Securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 6: Selected Financial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 7: Management’s Discussion and Analysis of Financial Condition and Results of

Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 7A: Quantitative and Qualitative Disclosures About Market Risk . . . . . . . . . . . . . . . .

ITEM 8: Financial Statements and Supplementary Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 9: Changes in and Disagreements with Accountants on Accounting and Financial

Disclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 9A: Controls and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 9B: Other Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PART III

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 10: Directors, Executive Officers and Corporate Governance . . . . . . . . . . . . . . . . . . .

ITEM 11: Executive Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 12: Security Ownership of Certain Beneficial Owners and Management and Related
Stockholder Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 13: Certain Relationships and Related Transactions and Director Independence . . . .

ITEM 14: Principal Accountant Fees and Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PART IV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITEM 15: Exhibits and Financial Statement Schedules . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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SIGNATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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PART I

This Form 10-K, including the sections titled “Management’s Discussion and Analysis of Financial
Condition and Results of Operations” and “Risk Factors,” contains forward-looking statements regarding our
future performance. All forward-looking information is inherently uncertain and actual results may differ
materially from assumptions, estimates or expectations reflected or contained in the forward-looking statements
as a result of various factors, including those set forth under “Risk Factors” and elsewhere in this Form 10-K.
Forward-looking statements convey our current expectations or forecasts of future events. All statements
contained in this Form 10-K other than statements of historical fact are forward-looking statements. Forward-
looking statements include statements regarding our future financial position, business strategy, budgets,
projected costs, plans and objectives of management for future operations. The words “may,” “continue,”
“estimate,” “intend,” “plan,” “will,” “believe,” “project,” “expect,” “anticipate” and similar expressions may
identify forward-looking statements, but the absence of these words does not necessarily mean that a statement is
not forward-looking. With respect to the forward-looking statements, we claim the protection of the safe harbor
for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. These forward-
looking statements speak only as of the date of this Form 10-K. Unless required by law, we undertake no
obligation to publicly update or revise any forward-looking statements to reflect new information or future
events or otherwise.

ITEM 1. BUSINESS

Overview

We are a medical device company and a leader in developing, manufacturing and selling innovative cardiac
surgical ablation systems designed to create precise lesions, or scars, in cardiac, or heart, tissue. Medical journals
have described the adoption by leading cardiothoracic surgeons of our Isolator® bipolar ablation clamp system,
or Isolator system, as a treatment alternative during open-heart surgical procedures to create lesions in cardiac
tissue to block the abnormal electrical impulses that cause atrial fibrillation, or AF, a rapid, irregular quivering of
the upper chambers of the heart. Additionally, leading cardiothoracic surgeons and publications in medical
journals have described our Isolator system as a standard treatment alternative for AF patients who may be
candidates for sole-therapy minimally invasive surgical procedures.

From our inception in November 2000 through the first half of 2002, our operations consisted primarily of

development-stage activities, including the development of our Isolator system, raising capital, obtaining product
clearances, conducting product testing and evaluations and recruiting personnel. In January 2003 we commenced
a full commercial release of our Isolator system. Revenues reached $55.3 million in 2008, were $48.3 million in
2007, and were $38.2 million in 2006. We anticipate that substantially all of our revenues for the foreseeable
future will relate to products we currently sell or are in the process of developing, which surgeons use to ablate
cardiac tissue for the treatment of AF or we believe will use in the future for the exclusion of the left atrial
appendage in order to potentially reduce the risk of stroke in patients with AF.

Our primary product line, which accounts for a majority of our revenues, is our Isolator system. Our Isolator

system consists primarily of a compact power generator known as an ablation and sensing unit, or ASU, a
switchbox unit, or ASB, which allows physicians to toggle between multiple products and multiple
configurations of our Isolator clamps including our Isolator SynergyTM clamps. We sell two configurations of our
clamps, one designed for ablation during open-heart, or open, procedures and one designed for ablation during
sole-therapy minimally invasive procedures. We also sell our Isolator® multifunctional pen, which is often used
by physicians in combination with our Isolator system to ablate cardiac tissue and for temporary pacing, sensing,
stimulating and recording during the evaluation of cardiac arrhythmias. During 2008 we introduced our
CoolrailTM linear ablation device, which has been adopted by physicians to create linear ablations. Additionally,
we sell various configurations of enabling devices, such as our LumitipTM dissection tool. In August 2007, we
acquired a cardiac cryoablation product line which uses extreme cold to ablate tissue. Prior to our acquisition of
the product line, we sold the product line as a distributor.

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In the United States we primarily sell our products through our direct sales force. AtriCure Europe B.V., our

wholly-owned European subsidiary incorporated and based in the Netherlands, sells our products throughout
Europe, primarily through distributors, with the exception of Germany, Switzerland and Austria where we sell
directly to medical centers. Additionally, we sell our products to other international distributors, primarily in
Asia, South America and Canada. Our business is primarily transacted in U.S. dollars with the exception of
transactions with our European subsidiary which are primarily transacted in Euros. Our sales outside of the
United States represented 15% of our 2008 revenues and 14% of our 2007 revenues.

Cardiothoracic surgeons have adopted our Isolator system to treat AF in over 50,000 patients since January
2003. Based on this adoption of our products, we believe that we are currently the market leader in the surgical
treatment of AF. The Food and Drug Administration, or FDA, has cleared our Isolator system, our Coolrail
device and our multifunctional pen for the ablation of cardiac tissue but, to date, none of our products have been
cleared by the FDA for the treatment of AF. Substantially all of our revenues are currently generated from the
sale of products to ablate cardiac tissue as an AF treatment. The adoption of our products for the treatment of AF
is deemed by the FDA to be an off-label use of our products. See “Government Regulation.”

AF is the most common cardiac arrhythmia, or irregular heartbeat, encountered in clinical practice and
accounts for more doctor visits and hospital days than any other cardiac arrhythmia. According to data from the
Framingham Study, one in four people over the age of 40 in the United States has a lifetime risk of developing
AF, and the incidence of AF increases with age. More than 5 million people worldwide, including approximately
2.5 million Americans, have been diagnosed with AF and studies expect a 30% increase in the prevalence of AF
by 2015. According to the American Heart Association, approximately 15% to 20% of the estimated 700,000
strokes that occur annually in the United States are attributable to AF and people with AF are approximately five
times more likely to have a stroke. Further, 35% of AF patients will have a stroke in their lifetime and AF-related
strokes tend to be severe. Studies suggest that 25% of people who have an AF-related stroke die within the first
thirty days following their stroke and over 40% are permanently bedridden.

AF is a condition that doctors often find difficult to treat and, historically, there has been no widely accepted

long-term cure for AF. Doctors typically begin treating AF with drugs, which are often ineffective, not well-
tolerated and may be associated with serious side effects. Patients who cannot effectively be treated with drugs
occasionally undergo catheter-based procedures to treat their AF. To perform a catheter ablation, an
electrophysiologist performs the ablation from the inside of the heart using a flexible catheter. The heart is
reached via a blood vessel, most commonly through the femoral vein. Catheter-based procedures are often
technically challenging, can be associated with serious complications, are not indicated for a certain population
of AF patients and have been known to yield inconsistent results. Implantable devices, such as pacemakers and
defibrillators, are sometimes used to reduce the frequency and symptoms of AF although they are not designed to
treat the underlying disease. In the past, an open-heart surgical procedure known as the “cut and sew Maze” was
used to treat AF, but this procedure has not been widely adopted because it is technically challenging, highly
invasive and involves long recovery times.

The creation of transmural, or full-thickness, lesions is thought to be a critical factor in the successful
treatment of AF when performing ablation treatments. Prominent medical journals, which contain articles that
were written, in part, by leading cardiothoracic surgeons, some of whom may be consultants to us, describe how
cardiothoracic surgeons have used our Isolator system to create transmural lesions when treating AF either
during an elective open-heart surgical procedure or as a sole-therapy minimally invasive procedure. As indicated
in these articles, cardiothoracic surgeons using our products have treated AF in approximately 20 minutes during
open-heart surgical procedures and in approximately two to three hours as a sole-therapy minimally invasive
procedure.

We may only promote our products to doctors and provide education and training on the use of our devices

for their cleared indications, which does not include the treatment of AF. While the FDA does not prevent
doctors from using products off-label, we cannot market a product for an off-label use.

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We are in the process of conducting a clinical trial, known as ABLATE, to evaluate the safety and

effectiveness of our Isolator system for the treatment of patients who have permanent AF and are undergoing a
concomitant open-heart procedure. If this trial is successful, we intend to seek FDA approval as early as 2010 for
the use of our Isolator system during open procedures to treat patients with permanent AF. See “Clinical Trials.”

Although the use of our products to treat AF remains investigational and we are still seeking FDA approval in

connection with the use of our Isolator system for the treatment of AF, preliminary clinical studies conducted by
doctors at leading medical centers provide support for our Isolator systems’ ability to create the lesions needed to
block the abnormal electrical impulses that cause AF. We believe those studies indicate that we have a significant
potential competitive advantage in the treatment of AF. Several clinical studies, including a 27-patient study, a
40-patient study, a 47-patient study and a 276-patient study, in which several of our consultants participated and that
were published in The Journal of Thoracic and Cardiovascular Surgery, found that approximately 90% of study
participants treated using our Isolator system were free of AF at their six-month follow-up. Several studies have
been completed and results published utilizing our Isolator system and our multifunctional pen during minimally
invasive sole-therapy surgery for the treatment of AF, in which several of our consultants have participated,
including a 20-patient, a 22-patient and an 88-patient study. The success rates for the treatment of paroxysmal, or
intermittent, AF patients were in excess of 80% and patients who had more continuous, or persistent or long-
standing persistent, AF experienced success rates ranging from 25% to over 50%. Recently, a 24-patient study of
patients with persistent and long-standing persistent AF, which included an expanded ablation treatment, reported
success rates of over 85% at six-month follow-up. During 2008 we introduced our Coolrail linear ablation device,
which when used in combination with our Isolator system and other products, allows a physician to perform an
expanded ablation during a sole-therapy procedure. Initial results presented at industry events using our Coolrail
device to perform an expanded ablation treatment for persistent and long-standing persistent AF patients, has
demonstrated success rates in excess of 80% at six-month follow-up. We believe the overall demand for our
products will increase, including an increased demand for products for use in minimally invasive procedures,
which we believe will ultimately represent our largest growth opportunity.

We have developed the AtriCure Left Atrial Appendage Exclusion System, which is designed to exclude the

left atrial appendage by implanting the device during open or minimally invasive surgical procedures from the
outside of the heart, avoiding contact with the circulating blood pool while eliminating blood flow between the
left atrial appendage and the atria. It is estimated that 15% to 20% of all strokes are attributable to AF and that a
majority of cardiac clots in patients with AF form in the left atrial appendage, which some physicians believe is
associated with AF-related strokes. We believe that the surgical practice of excluding the left atrial appendage
has become a growing trend in procedures performed to treat AF. We also believe that our left atrial appendage
exclusion system is potentially safer, more effective and easier to use when permanently excluding the left atrial
appendage than products and techniques currently being utilized. Our left atrial appendage exclusion system is
currently being utilized and has been safely and effectively implanted in humans as part of clinical evaluations in
the United States and Europe. The AtriCure Left Atrial Appendage Exclusion System has not yet been approved
for commercial use. We have filed a 510(k) notification with the FDA and are conducting a clinical trial. If the
outcomes of the trial and the FDA’s review are favorable, we expect to have FDA clearance for commercial use
of the AtriCure Left Atrial Appendage Exclusion System to permanently exclude the left atrial appendage during
the first half of 2010. We expect to have clearance for this system in Europe during the second half of 2009. We
believe the market for the left atrial appendage exclusion system is large and represents a significant new growth
opportunity for us.

Information about our operating results and working capital practices is set forth in Item 7 of this

Form 10-K.

Market Overview

AF is a condition where abnormal electrical impulses cause the atria, or upper chambers of the heart, to
fibrillate, or quiver, at rapid rates of 400 to 600 beats per minute. As a result of this quivering, blood in the atria
becomes static, creating an increased risk that a blood clot will form and cause a stroke or other serious

3

complications. If AF persists, patients often progress from experiencing AF intermittently to having AF
continuously, a condition that is more difficult to treat. Symptoms of AF may include heart palpitations,
dizziness, fatigue and shortness of breath, and these symptoms may be debilitating and life threatening in some
cases. Although there is often no specific cause of AF, the condition is often associated with high blood pressure
and other forms of heart disease. In most cases, AF is associated with cardiovascular disease, in particular
hypertension, congestive heart failure, left ventricular dysfunction, coronary artery disease and valvular disease.

AF is the most commonly diagnosed sustained cardiac arrhythmia, and affects more than 5 million people
worldwide, including more than 2.5 million in the United States, where approximately 160,000 new cases of AF are
diagnosed each year. According to data from the Framingham Study, it is estimated that the incidence of AF doubles
with each decade of an adult’s life. At age 40, remaining lifetime risk for AF is 26% for men and 23% for women.

According to the American Heart Association, people with AF are about five times more likely to have a

stroke and AF is thought to be responsible for approximately 15% to 20% of the estimated 700,000 strokes that
occur annually in the United States. AF accounts for $6.7 billion in hospitalization-related costs in the United
States each year and an estimated 5 million office visits annually. Additional costs include the costs of drugs and
indirect costs, such as the management of AF-related strokes, the costs of which are believed to be significant.

AF is an under-diagnosed condition due in large part to the fact that patients with AF often have mild or no
symptoms, and their AF is only diagnosed when they seek treatment for an associated condition, such as a stroke
or heart disease. We believe that increasing awareness of AF and improved diagnostic screening will result in an
increased number of patients diagnosed with AF. Also, since the prevalence of AF increases with age, there will
likely be an increase in the number of diagnosed AF patients in the United States as the population ages. Of the
patients undergoing open-heart surgery in the United States, we estimate that approximately 80,000 of these
patients are potential candidates for surgical ablation using our Isolator system.

Of the United States population diagnosed with AF, approximately 12% of these patients are symptomatic
and do not respond to drug therapy or are intolerant to the drugs used to treat AF. For these patients, the cut and
sew Maze procedure is typically too invasive and catheter ablation is often not indicated. Accordingly, we
believe that there is a large population of under-treated patients who would potentially benefit from minimally
invasive AF treatment using our Isolator system and related products, and that these patients will ultimately
comprise our largest growth opportunity.

Because the FDA has not cleared our products for the treatment of AF, we and others acting on our behalf

may not promote our products for the treatment of AF, make any claim that they are safe and effective for the
treatment of AF or train doctors to use them for the treatment of AF outside of the clinical trial setting. However,
these restrictions do not prevent doctors from choosing to use our Isolator system and other products for the
treatment of AF or prevent us from engaging in sales and marketing efforts that focus only on the general
attributes of our products and their FDA-cleared uses and not on the treatment of AF. See “Sales, Marketing and
Medical Education.”

Current Treatment Alternatives

Doctors usually begin treating AF patients with a variety of drugs intended to prevent blood clots, control
heart rate or restore the heart to normal sinus rhythm. If a patient’s AF cannot be adequately controlled with drug
therapy, doctors may perform one of several procedures that vary depending on the severity of the AF symptoms
and whether the patient suffers from other forms of heart disease. During 2007 the Heart Rhythm Society
published an expert consensus statement on catheter and surgical ablation for the treatment of AF. The expert
consensus concluded that the current indications for the surgical treatment of AF are the following:

•

•

Symptomatic AF patients undergoing other cardiac surgery;

Selected asymptomatic AF patients undergoing cardiac surgery in whom the ablation can be performed
with minimal risk; or

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•

Stand-alone (or sole-therapy) AF surgery should be considered for symptomatic AF patients who prefer
a surgical approach, have failed one or more attempts at catheter ablation or are not candidates for
catheter ablation.

Other treatment alternatives include:

• Drugs. Currently available drugs are often ineffective, not well-tolerated and may be associated with
severe side effects. For these reasons, drug therapy for AF fails for as many as 50% of patients within
one year. Of those who initially respond to drug therapy, only approximately 25% of patients can
continue to be managed with drugs after five years.

•

Implantable Devices. Implantable devices, such as defibrillators and pacemakers, can be effective in
reducing the symptoms and frequency of AF episodes, but neither device is intended to treat AF.
Patients may continue to experience the adverse effects of AF as well as some of the symptoms and
complications, including dizziness, fatigue, palpitations and stroke, because the AF continues.

• Catheter-Based Treatment. A catheter ablation is an ablation procedure that is typically performed by an
electrophysiologist. The ablations are made from the inside of the heart using a flexible catheter. The
heart is reached via a blood vessel, most commonly through the femoral vein. Catheter-based AF
treatments are often technically challenging, can be associated with serious complications and have been
known to yield inconsistent results. In proportion to the prevalence of AF, only a small number of
catheter-based AF treatments are performed each year in the United States.

• Cut and Sew Maze. The cut and sew Maze procedure is a highly invasive open-heart surgical procedure
that involves the use of a heart-lung bypass machine and cutting and sewing back together sections of
the heart in order to block the abnormal electrical impulses causing AF. Although this procedure is
highly effective at treating AF, it is rarely performed because it requires extensive open-heart surgery, is
technically challenging and is typically associated with long recovery times. For these reasons, only a
limited number of these procedures have been performed by a small number of cardiothoracic surgeons.

The AtriCure Solution

We believe that traditional surgical and catheter-based ablation devices are not ideal for safely, rapidly and
reliably creating the transmural lesions required to block the abnormal electrical impulses that cause AF. Reports
of preliminary clinical studies conducted by doctors at prominent medical centers suggest that our products,
including our Isolator system, enable cardiac surgeons to simplify the cut and sew Maze procedure with a faster,
less invasive and less technically challenging approach that appears to have comparable effectiveness. Over
eighty medical centers in the United States are currently using our Isolator system as a sole-therapy minimally
invasive treatment for AF and revenues from our minimally invasive products, including our Coolrail device,
MicroPace ORLABTM system and an estimate of revenues from our multifunctional pen, exceeded $19 million in
2008. Our multifunctional pen is complementary to our Isolator system, and we believe it is used in combination
with our Isolator system in most sole-therapy procedures. We also believe there has been a trend toward utilizing
our multifunctional pen during open-heart procedures.

Our clinical studies for the use of our products to treat AF are ongoing. Leading cardiothoracic surgeons and

electrophysiologists, including those who are consultants to us, have published results of initial clinical studies
utilizing our Isolator system. These studies have been conducted at prominent medical centers, including the
Cleveland Clinic (Cleveland, Ohio), Washington University (St. Louis, Missouri), the Cardiopulmonary
Research Science and Technology Institute (Dallas, Texas), Medical College of Virginia (Richmond, Virginia),
Oregon Heart and Vascular Institute (Eugene, Oregon), University of Zurich (Zurich, Switzerland) and the
Nebraska Heart Hospital (Lincoln, Nebraska). The results of these studies are promising in terms of the efficacy,
ease of use and safety.

Efficacy. We believe that products designed to treat AF must be able to reliably create transmural lesions in

order to block the electrical impulses that trigger and sustain AF. Transmurality is considered by many
physicians to be necessary for the treatment of AF, since creating lesions with gaps can fail to treat AF and may

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cause other abnormal heart rhythms. Initial studies have found that between 80% and 95% of the study
participants treated for AF during open-heart procedures using our Isolator clamps were free of AF at a minimum
of six-month follow-up. Initial studies have been published in leading publications on the clinical outcomes
related to the sole-therapy minimally invasive surgical treatment of AF utilizing our products, including our
Isolator system. Those studies resulted in over 80% of patients with paroxysmal AF and 25% to 50% of patients
with long-standing persistent AF being free of AF after a minimum six-month follow-up period. Recently, a
24-patient study was published using our products to treat persistent and long-standing persistent AF patients
including an expanded ablation treatment. The study results concluded that over 85% of patients were free of AF
after at least a six-month follow-up period. We are conducting longer-term FDA-approved clinical trials in order
to confirm these initial promising results. Further, during 2008, we introduced our new Coolrail device, which
allows physicians to perform an expanded ablation treatment during sole-therapy AF procedures. We believe the
expanded ablations are improving the success rates, particularly for persistent and long-standing persistent AF
patients undergoing a sole-therapy AF procedure.

Ease of Use. In studies, physicians reported that our Isolator system is easy to use based, in part, on the
design and automated features of our ASU. Our ASU does not require the surgeon to make any prior settings or
adjustments and signals the surgeon when conductance drops below a certain threshold indicating that the lesion
is transmural. Further, our ASB allows the physician to easily toggle between multiple devices, such as our
clamps and multifunctional pen. The unique jaws of our Isolator clamps firmly clamp and evenly compress the
tissue targeted for ablation, allowing surgeons to rapidly create transmural lesions. Our Isolator Synergy clamps,
which we introduced during 2007, incorporate two pulsing pairs of electrodes in the jaws of the clamp, which we
believe ensure full thickness ablation of thicker and more diseased tissue. Cardiothoracic surgeons report that
they have generally treated AF in only 20 minutes when using our Isolator system during an open-heart
procedure, or in approximately two to three hours when using our products to treat AF as a sole-therapy
minimally invasive procedure.

Safety. Although serious complications, including death, may arise from any type of cardiac surgery, initial

studies have concluded that our Isolator system appears to have an excellent safety profile as a treatment
alternative for the surgical treatment of AF. Cardiothoracic surgeons participating in these studies concluded that
our Isolator system may potentially reduce or eliminate damage to adjacent anatomical structures due to its
unique design which confines the delivery of energy to within the jaws of the clamps and allows the surgeon to
control the application of energy to the tissue targeted for ablation.

AtriCure Products

Our Isolator system primarily consists of the following products:

• Ablation and Sensing Unit, or ASU. Our ASU is a compact power generator that uses our proprietary

software and delivers bipolar radio-frequency, or RF, energy. The ASU provides the RF energy
necessary for our clamps, multifunctional pen and Coolrail devices. We generally lend our ASU to
customers in the United States and sell it to customers outside of the United States.

• AtriCure Switch Box, or ASB. Our ASB is a compact switch box which was introduced with our

Isolator Synergy clamps during 2007 and provides the technology needed for the dual pulsing electrodes
as well as the ability to connect and toggle between our multiple devices, including our clamps and
multifunctional pen. We generally lend our ASB to customers in the United States and sell it to
customers outside of the United States.

•

Isolator Synergy Bipolar Radio-Frequency Ablation Clamps. We sell two configurations of our
Isolator Synergy clamps: one designed for ablation during open-heart procedures and one designed for
ablation during minimally invasive procedures. Our Isolator Synergy clamps are single-use disposables
and have jaws that close in a parallel fashion. The parallel closure compresses the tissues and evacuates
the blood and fluids from the energy pathway in order to make the ablation more effective. During 2007,
we introduced our Isolator Synergy clamps and although we continue to sell earlier versions of our
clamps, a substantial majority of our customers utilize our Isolator Synergy clamps.

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In addition to our AtriCure Isolator system, we sell our Isolator multifunctional pen. This disposable hand

piece is powered by the same ASU that powers our Isolator clamps and is compatible with standard external
pacing/stimulating and sensing/recording systems. Because of its broad range of capabilities, we believe
surgeons generally are using this device in combination with our Isolator clamps during minimally invasive
procedures and have also adopted it for use during open-heart procedures. The multifunctional pen enables
surgeons to evaluate cardiac arrhythmias, perform temporary pacing, stimulation, sensing and ablate cardiac
tissues with the same device. When the multifunctional pen is used with our ASB, surgeons are able to toggle
back and forth between temporary pacing, sensing, stimulation and ablation.

During the second quarter of 2008 we released our Coolrail linear ablation device which is designed to
allow the physician to create an expanded cardiac ablation lesion set during minimally invasive procedures. We
believe physicians are adopting our Coolrail device during minimally invasive procedures in order to improve
long-term results for patients who have persistent and long-standing persistent AF. During the first quarter of
2008, we also released our MicroPace ORLab system, a stimulating, mapping and recording system which we
believe, when used with a mapping probe, enables physicians to more effectively confirm that the ablation lines
being created are forming electrical barriers or lines of block.

We also sell a device known as the Lumitip dissector, which is used by surgeons to gently separate tissues to

provide access to key anatomical structures that are targeted for ablation. The Lumitip dissector consists of a
shaft with an articulating index finger-shaped tip that illuminates, allowing surgeons to more easily determine the
movement, direction and position of the device during procedures. The Lumitip dissector is cleared by the FDA
for the dissection of soft tissues during general, thoracic and certain other surgical procedures. The Lumitip
dissector was designed in conjunction with Dr. Randall Wolf who is a leader in the field of minimally invasive
cardiothoracic surgery.

Additionally, we have developed the AtriCure Left Atrial Appendage Exclusion System, which is designed

to exclude the left atrial appendage, the small appendage that is attached to the left atrium. The left atrial
appendage is considered by many physicians to be the source of blood clots which may cause a high percentage
of AF-related strokes. During 2007 the AtriCure Left Atrial Appendage Exclusion System was used to implant
our clip in humans in Europe as part of a clinical study and, during 2008, as part of a FDA regulated clinical trial
in support of a 510(k) clearance in the United States. The system has not been approved for commercial use. We
expect clearance in Europe during the second half of 2009 and during the first half of 2010 in the United States.

In August 2007 we acquired the Frigitronics® CCS-200 product line for cardiac ablation, which includes a

console that is currently used in combination with a variety of reusable cardiac ablation probes which use
cryothermy, or extreme cold, to ablate tissues. Currently, some surgeons use this reusable device in conjunction
with our Isolator clamps to ablate tissues around heart valves as part of an AF treatment. We have developed a
long, malleable, disposable cryothermy ablation probe, Cryo1TM, which will be used with the console and we
believe will be adopted by physicians for AF ablation treatment during certain open-heart procedures. On
March 2, 2009, our Cryo1 device was cleared by the FDA for the cryosurgical treatment of cardiac arrhythmias.
During the second quarter of 2009, we anticipate full commercial release of Cryo1.

Open-Heart Surgical Procedure

During elective open-heart surgical procedures, such as bypass or valve surgery, cardiothoracic surgeons use

our Isolator system to treat patients with a pre-existing history of AF. Surgeons report that ablation using our
Isolator system generally adds approximately 20 minutes to an open-heart surgical procedure. Surgeons use our
Isolator clamps to perform cardiac procedures that may vary depending on the length of time a patient has been
diagnosed with AF and whether the patient’s AF is intermittent, or paroxysmal, or more continuous, known as
persistent, long-standing persistent or permanent AF. Patients who have been diagnosed with AF for a longer
duration and have more continuous AF generally receive more extensive ablation procedures than patients who

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have been diagnosed with AF for a shorter duration or who have paroxysmal AF. Surgeons using our Isolator
system and related products during an open-heart surgical procedure typically perform the following steps:

Pulmonary Vein Isolation. Regardless of the duration or type of AF, surgeons will create lesions in the heart

tissue surrounding the pulmonary veins to create an electrical barrier between the pulmonary veins and the
atrium, or upper chambers of the heart. In patients with intermittent AF, those lesions are often the extent of the
treatment performed and, in some cases, doctors may also use our multifunctional pen to sense, pace, stimulate or
ablate cardiac tissues. Cardiothoracic surgeons report that using our Isolator system for open-heart procedures
enables them to create lesions to achieve electrical isolation of the pulmonary veins from the atrium. In order to
perform this procedure, surgeons position the jaws of our clamps on the cardiac tissue surrounding the
pulmonary veins. The jaws are closed and the ablation is activated. Moments later, an audible tone from the ASU
alerts the surgeon that the conductance has dropped below a certain threshold, indicating that the lesion has
become transmural, or full thickness, and that the pulmonary veins have been electrically isolated.

Additional Lesions. For those patients who have more continuous AF, doctors may determine that additional

lesions are required to treat their AF. In cases where patients require such additional lesions, surgeons may use
our Isolator clamps for open-heart surgical procedures to create lesions in the atrium that are intended to
reproduce similar electrical barriers to those created by surgeons during the cut and sew Maze procedure. In
some cases, doctors may also use our multifunctional pen to sense, pace, stimulate or ablate cardiac tissues.
Additionally our reusable cryothermy probes are often used to ablate cardiac tissues near the heart valves.

We believe our Cryo1 device, when used in combination with the Atricure Frigitronics CCS-200 console, will

be adopted during certain open heart procedures to create pulmonary vein isolation and to create additional ablations.

Sole-Therapy Minimally Invasive Procedure

For those patients with AF who do not require a concomitant open-heart surgical procedure, surgeons have
used our Isolator system for minimally invasive AF treatment procedures. These procedures have generally been
performed through minimally invasive incisions without the need to place patients on a heart-lung bypass
machine. Surgeons have reported that the procedure takes approximately two to three hours and that the average
hospitalization period has been two to five days. Similar to the open-heart surgical procedure, patients who have
more continuous AF generally require an expanded lesion set that mimics the cut and sew Maze procedure. Our
Coolrail device and multifunctional pen are often adopted during these procedures to enable physicians to
perform additional ablations.

Business Strategy

Our mission is to expand the treatment options for those patients who suffer from AF through the continued

development of our technologies and expansion of our product offerings. The key elements of our strategy
include:

Form Investigational Relationships with Key Opinion Leaders at Leading Institutions. We have formed

investigational relationships with key opinion leaders at several leading medical centers including the Cleveland
Clinic, Washington University, Medical College of Virginia, the Cardiopulmonary Research Science and
Technology Institute, Oregon Heart and Vascular Institute, Nebraska Heart Hospital, the University of
Oklahoma, the University of Zurich and Indiana Heart Hospital. These key opinion leaders and others have
worked with us as consultants to evaluate and develop our products. Additionally, several key opinion leaders at
these institutions have published peer-reviewed data that describes the use of our products as a treatment
alternative for AF. These opinion leaders have assisted and continue to assist us with the design and/or evaluation
of our products. To date, there have been over 40 peer-reviewed publications that describe our Isolator systems’
ability to create transmural lesions or the use of our Isolator system as an AF treatment alternative. Key
publications and presentations have highlighted promising results utilizing our products to treat patients with AF
during sole-therapy minimally invasive surgical procedures. Recently several presentations have highlighted
promising initial patient outcomes utilizing our Coolrail device and performing an expanded ablation set. We

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believe that these publications, and the presentations given by key opinion leaders, have contributed to the
adoption of our Isolator system for the treatment of AF.

Provide Product Education. We have recruited and trained sales professionals who have strong
backgrounds in the medical device industry to effectively communicate to doctors the unique features and
benefits of our technology as they relate to their cleared indications. Our highly trained sales professionals meet
with doctors at leading institutions to provide education and technical training limited to the technical features
and benefits of our products. In addition to our sales activities, we provide medical information on our products
in response to information requests from physicians, and we have provided educational grants to institutions that
have facilitated the education of doctors concerning the treatment of AF, including the use of our products as an
AF treatment alternative. As a result of the educational process, we believe that awareness of our technology is
growing and will result in the increased use of our products.

Expand Adoption of Our Minimally Invasive Products. We believe that the catalysts for expanded

adoption of our minimally invasive products include the publication of peer-reviewed articles, which we believe
will help validate the successful, long-term use of our products for patients with AF and our new innovative
product introductions, such as our Coolrail device. Our consultants have received grant monies to support certain
research activities and have presented and published their results of an initial series of studies relating to the use
of our minimally invasive products. As results of these peer-reviewed studies are accepted, we believe that this
will increase the demand for our minimally invasive products. We believe our consultants are continuing their
efforts to investigate, present and publish results from the use of our products to perform minimally invasive
procedures and that the results from these research activities will continue to demonstrate that our products can
be used to offer certain AF patients an improved treatment alternative. We believe that these ongoing research
activities and anticipated presentations and publications will create an increased demand for our minimally
invasive products.

New Product Innovation. During 2007 we released our new Isolator Synergy ablation clamps. The unique
ablation technology used in our Isolator Synergy clamps provides more reliable full thickness lesions in thicker
and more diseased tissues. During 2008 we released our Coolrail device, allowing for the expansion of the
ablation procedure during minimally invasive procedures. We also began marketing an integrated mapping
system, ORLab. During the second quarter of 2009 we plan to release a long, malleable disposable cryo ablation
probe, Cryo1, which will be used in combination with our recently acquired AtriCure Frigitronics CCS-200
console for use primarily during open-heart procedures. We believe that during certain open-heart procedures
physicians prefer cryothermy ablation to RF ablation. We expect that our Cryo1 device will broaden our open-
heart technology platform and also allow us to capitalize on a growing market opportunity. We plan to release
Cryo1 during the second quarter of 2009. Additionally, our AtriCure Left Atrial Appendage Exclusion System is
designed to exclude the left atrial appendage by implanting a clip device during a surgical procedure from the
outside of the heart, avoiding contact with the circulating blood pool while eliminating blood flow between the
left atrial appendage and the atria. We have filed a 510(k) notification with the FDA and, if the FDA review is
favorable, we expect to have clearance in the United States for commercial use of the AtriCure Left Atrial
Appendage Exclusion System to permanently exclude the left atrial appendage in the first half of 2010.

Clinical Trials

During 2007 we worked with the FDA and leading cardiothoracic surgeons to design our pivotal clinical

trial, ABLATE, which was approved by the FDA for patients with permanent AF (as defined in the trial’s
protocol) undergoing concomitant cardiac surgical procedures. We anticipate we will need to enroll
approximately 60 to 70 patients in the trial, which is being conducted at ten medical centers throughout the
United States. The primary endpoints of the trial are an estimated minimum of 70% of patients treated being free
of AF and off of antiarrhythmic drugs at their six-month follow-up. A 24-hour holter monitor will be used to
determine the rhythm status six months following surgery. If the ABLATE trial is successful, we anticipate filing
a Pre-Market Approval application, or PMA, which, if approved by the FDA, would allow us to market our
Isolator system for the treatment of patients with permanent AF during open-heart procedures.

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In 2007 we initiated a clinical trial in Zurich, Switzerland for our Left Atrial Appendage System. As of

February 28, 2009, enrollment has been completed and 39 patients have participated in the trial. We anticipate
utilizing this data in support of CE Mark approval in Europe during the second half of 2009.

In 2008 we received FDA approval for our EXCLUDE clinical trial for our Left Atrial Appendage
Exclusion System, which will be used in support of a 510(k) filing. We anticipate we will need to enroll 60
patients in the trial, which is being conducted at six medical centers throughout the United States. The primary
endpoint for the trial is safe and effective exclusion of the left atrial appendage, which will be evaluated at
3-months for all patients and at 6-months for 30 patients. If the EXCLUDE trial is successful and we receive
510(k) clearance, we anticipate commercialization in the United States during the first half of 2010.

We have FDA approval for two additional clinical trials which we are not actively enrolling at this time. The

first trial is a second arm of the ABLATE trial, designed for patients with persistent AF. The second trial,
RESTORE SRIIB, is a feasibility trial designed to demonstrate the safety and efficacy of our Isolator Synergy
system during minimally invasive sole-therapy procedures for the treatment of patients with long-standing
persistent AF.

Regulatory Clearances

United States

In July 2004 the FDA granted us clearance to market our Lumitip dissector for its intended use of dissection

of soft tissues during general, thoracic and certain other surgical procedures.

In June 2005 the FDA granted us 510(k) clearance to market our multifunctional pen for the ablation of

cardiac tissue during cardiac surgery and, in July 2006, the FDA granted us 510(k) clearance to market our
multifunctional pen for temporary pacing, sensing, stimulating and recording during the evaluation of cardiac
arrhythmias.

In October 2005 the FDA granted us 510(k) clearance to market the minimally-invasive configuration of our

Isolator bipolar ablation clamps and the Glidepath transfer guide for the ablation and coagulation of soft tissues
during general, ear, nose and throat, thoracic, gynecologic and urologic surgical procedures which, in conjunction
with our July 2007 FDA notification, are now cleared for the ablation of cardiac tissue.

In July 2007 we were notified by the FDA that our Isolator system received 510(k) clearance for the
ablation of cardiac tissue. From August 2001 until July 2007, the system had been cleared for the ablation and
coagulation of soft tissues during general, ear, nose and throat, thoracic, gynecologic and urologic surgical
procedures.

In March 2008 the FDA granted us 510(k) clearance to market our Coolrail device for the ablation of

cardiac tissue.

In March 2009 the FDA granted us 510(k) clearance to market our cryoablation device, Cryo1, for the

cryosurgical treatment of cardiac arrhythmias.

International

We received our original CE Mark for our Isolator system in July 2002, which allows us to market and sell
these clamps throughout the European Union for the same uses for which they may currently be marketed in the
United States. In September 2006, we expanded our CE Mark indication to market our Isolator system for the
treatment of cardiac arrhythmias including AF. We have also received approvals to market and sell our Isolator
system in several other foreign markets including Japan, Canada and China.

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We received our original CE Mark for the Lumitip dissector in February 2005, which allows us to market
and sell the Lumitip dissector throughout the European Union for the same uses for which it may currently be
marketed in the United States. We have also received approvals to market and sell the Lumitip dissector in Japan,
Canada and China.

We received our original CE Mark for our multifunctional pen in July 2005, which allows us to market and
sell our multifunctional pen throughout the European Union. We have also received approvals to market and sell
our multifunctional pen in several foreign markets, including Japan, Canada and China.

We received a CE Mark for our Coolrail linear ablation device in April 2008, which allows us to market and

sell our Coolrail device throughout the European Union. We have also received approval to market and sell our
Coolrail device in Canada.

Sales, Marketing and Medical Education

Our United States sales and marketing efforts focus on educating doctors concerning our unique

technologies and the technical benefits of our Isolator system for the ablation of cardiac tissue. It is our policy not
to market or promote our products for the treatment of AF. Our sales personnel visit cardiac surgeons,
electrophysiologists and other doctors to discuss the general attributes of our products and promote them for their
FDA cleared uses. We train our sales force on the use of our products to treat AF so that they are able to respond
to unsolicited requests from doctors for information on the use of our products for the treatment of AF. In
addition, medically trained clinical application specialists attend surgical procedures to discuss the use of our
products to ablate cardiac tissue and to respond in a non-promotional manner to unsolicited requests for
information on the use of our Isolator system and other products for the treatment of AF.

We have entered into consulting agreements with leading scientists, cardiothoracic surgeons and

electrophysiologists who assist us with the design, clinical testing and evaluation of our products, education of
doctors on the use of our technologies and provide advice concerning regulatory submissions. We work closely
with these thought leaders to understand unmet needs and emerging applications related to the ablation of cardiac
tissues and the treatment of AF. We also provide educational grants to several leading medical centers. These
institutions have used these grants to sponsor activities evaluating the effectiveness of our Isolator system and
our other products and technologies, which have increased the number of peer-reviewed publications that cite the
use of our Isolator system. These grants have also been used by these institutions to sponsor independent
educational programs relating to AF, including programs which focus on the surgical treatment of AF using our
products. We provide some guidance to physicians and medical institutions regarding those physicians who are
available and qualified for training other physicians in the use of our Isolator system in the treatment of AF.

We have formed a healthcare compliance committee in support of our ongoing compliance efforts with
applicable federal and state healthcare laws and regulations. This committee has instituted standard operating
procedures relating to our marketing and promotional activities, grant review and funding procedures and the
training and education of our sales force. Our training and educational programs include training on federal and
state requirements for marketing medical devices and we maintain continuous oversight of our grant application
and funding procedures and requirements.

Our sales team in the United States is led by a Vice President of Sales. Our sales force in the United States

has a total of approximately 50 employees supporting approximately 30 sales territories. We select our sales
personnel based on their expertise, sales experience and reputation in the medical device industry and their
knowledge of our products and technologies. We believe at this time that our sales organization is appropriately
sized and do not anticipate significant changes in the foreseeable future.

We market and sell our products in selected markets outside of the United States through independent
distributors and, in Europe, through our European subsidiary, which includes a combination of independent
distributors and direct sales personnel. During 2008 and 2007, sales outside of the United States accounted for

11

15% and 14% of our total revenues, respectively. We have a network of distributors outside of the United States
who currently market and sell our products and are located primarily in Europe, Asia, South America and
Canada. We have a direct sales representative who sells to customers in Germany, Switzerland and Austria. We
continue to expand our presence in markets outside of the United States. For additional information see “Risk
Factors—Risks Relating To Our Business—We sell the AtriCure Isolator bipolar ablation system outside of the
United States and are subject to various risks relating to international operations, which could harm our
international revenues and profitability.”

We have one reporting segment. For information regarding revenues from customers, operating losses and
total assets for each of our last three fiscal years, please refer to our consolidated financial statements which are
included in Item 8 of this Form 10-K.

Seasonality

During the first quarter, we historically experience an increase in our operating loss due to higher selling,

general and administrative expenses related primarily to our participation in and attendance at large industry
events. During the third quarter, we historically experience a decline in revenues that we attribute to the elective
nature of the procedures in which our products are typically used, which we believe arises from fewer people
choosing to undergo elective procedures during the summer months.

Competition

Our industry is highly competitive, subject to change and significantly affected by new product

introductions and other activities of industry participants. Many of our competitors have significantly greater
financial and human resources than we do and have established reputations with our target customers, as well as
worldwide distribution channels that are more established and developed than ours. Our primary competitors
include Medtronic, Inc., St. Jude Medical, Inc., and ATS Medical, Inc. We and our competitors provide products
that have been adopted by doctors for the off-label treatment of AF. As of December 31, 2008, no company had
received FDA approval or clearance to market a surgical ablation system for the treatment of AF.

We, and many of our competitors, have developed surgical ablation devices that have been used to treat AF

during open-heart surgical procedures and, in some cases, sole-therapy minimally invasive AF treatment. We,
and these competitors, utilize a variety of different technologies as energy sources for the ablation devices,
including microwave, cryothermy, high-intensity focused ultrasound, and radio frequency technologies. Some of
our competitors offer catheter-based treatments, including but not limited to Biosense Webster, Inc. (a subsidiary
of Johnson and Johnson), St. Jude Medical, Inc., and Medtronic Inc. These companies sell products that are used
by doctors to treat the population of patients that have AF but are not candidates for open-heart surgery, which is
a segment of the AF patient population that we believe would benefit from minimally invasive AF procedures.
However, catheter-based treatments often do not treat patients with more continuous forms of AF. Some of these
catheter-based treatments already have FDA clearance or approval for cardiac use, including the treatment of
certain arrhythmias, although we believe only one has approval for the treatment of AF at this time.

We believe that we compete favorably against companies that have products that are used for the surgical
treatment of AF during both open-heart surgical and sole-therapy minimally invasive procedures, although we
cannot assume that we will be able to continue to do so in the future or that new devices that perform better than
our Isolator system will not be introduced. We also believe that our Isolator system competes favorably when
compared to catheter-based treatments.

Due to the size of the AF market and the unmet need for an AF cure, competitors have and will continue to
dedicate significant resources to aggressively develop and market their products. New product developments that
could compete with us more effectively are likely because the surgical AF treatment market is characterized by
extensive research efforts and technological progress. Further, recent publications and industry events are
expanding knowledge of the market and treatment alternatives and have identified the surgical treatment of AF as
a treatment alternative for AF patients.

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Existing or new competitors may develop technologies and products that are safer, more effective, easier to

use or less expensive than our Isolator system and other products. To compete effectively, we have to
demonstrate that our products are an attractive alternative to other treatments by differentiating our products on
the basis of safety, efficacy, performance, ease of use, brand and name recognition, reputation, service and price.
We have encountered and expect to continue to encounter potential customers who, due to existing relationships
with our competitors, are committed to or prefer the products offered by competitors. Competitive pressures may
result in price reductions and reduced gross profit margins for our products over time. Technological advances
developed by one or more of our competitors may render our products obsolete or uneconomical.

Third-Party Reimbursement

Payment for patient care in the United States is generally made by third-party payors. These payors include
private insurers and government insurance programs, such as Medicare or Medicaid. The Medicare program, the
largest single payor in the United States, is a federal health benefit program administered by the Centers for
Medicare and Medicaid Services, or CMS, and covers certain medical care items and services for eligible
beneficiaries, such as individuals over 65 years old, as well as chronically disabled individuals. Reimbursement
under Part A of the Medicare program includes hospitals and other institutional services, while Part B of
Medicare includes doctors’ services. Because Medicare beneficiaries comprise a large percentage of the
populations for which our Isolator system is used, and private insurers may follow the coverage and payment
policies for Medicare, Medicare’s coding, coverage and payment policies for cardiothoracic surgical procedures
are significant to our business.

Medicare’s Part A program pays hospitals for inpatient services under the Inpatient Prospective Payment

System, which provides a pre-determined payment based on the patient’s discharge diagnosis. Discharge
diagnoses are grouped into Diagnosis Related Groups, or MS-DRGs. There are several cardiac surgery
MS-DRGs associated with the surgical treatment of AF, with and without a concomitant open-heart
procedure. When an ablation device is used during a concomitant open-heart procedure, reimbursement is based
upon the primary surgical procedure. Reimbursement for sole-therapy minimally invasive AF treatment is also
influenced by the patient’s severity of illness before the appropriate MS-DRG is assigned. Medicare’s coding,
coverage, and payment polices are subject to change. As a result, the continuance of current coverage, coding or
payment determinations cannot be guaranteed, and any change may have an adverse impact on our business.

Doctors are reimbursed for their services separately under the Medicare Part B physician fee schedule.
When surgically performing a cardiac ablation with and without a concomitant open-heart procedure, surgeons
must select the appropriate Current Procedural Terminology, or CPT, codes to receive payment. These billing
codes identify the procedure or procedures performed and are relied upon to determine third-party payor
amounts. In terms of physician reimbursement for surgical ablation procedures, on January 1, 2007 several new
CPT codes for sole-therapy surgical ablation procedures were published by the American Medical Association,
or AMA, in the CPT coding book for 2007. Surgeons have the choice of five different CPT codes for sole-
therapy ablation procedures depending on the extent of the procedure and ablation performed. Effective
January 1, 2008 three new CPT codes were introduced for cardiac ablation when performed concomitantly. The
2008 codes are “add-on” codes and will allow the physician to obtain full reimbursement for the ablation
procedure and the primary procedure.

Currently, we believe that the AF treatment reimbursement rates are adequate for hospitals to cover the use

of our Isolator system and other products. In 2008, Medicare’s national average payments to hospitals, as
published in the Inpatient Prospective Payment System (IPPS) final rule for an open-heart procedure, with or
without cardiac ablation, ranged between approximately $18,250 to $45,500. This range was influenced by the
patient’s severity of illness, the type of open-heart procedure being performed, the geographic region, actual
coding practices of the facility and the type of facility. The cost of AF treatment performed during open-heart
surgical procedures is not reimbursed separately by the Medicare program. For example, reimbursement for
open-heart surgical procedures include supplies, such as an ablation device, but excludes doctor’s fees for these

13

procedures, which payors remit to doctors in addition to the amounts paid to hospitals. Medicare’s national
average facility payment for a stand-alone cardiac ablation procedure, as published in the 2008 IPPS final rule,
ranged between approximately $23,400 and $33,000. Actual facility reimbursement was influenced by the
patient’s severity of illness, geographic region, actual coding practices at the facility and the type of facility.

In addition to the Medicare program, many private payors look to CMS policies as a guideline in setting

their coverage policies and payment amounts. The current coverage policies of these private payors may differ
from the Medicare program, and payment rates may be higher, lower, or the same as the Medicare program. If
CMS or other agencies decrease or limit reimbursement payments to doctors and hospitals, this may negatively
impact our business. Additionally, some private payors do not follow the Medicare guidelines and those payors
may reimburse only a portion of the cost of cardiac ablation, or not at all.

The FDA generally does not regulate the practice of medicine. Doctors may use our Isolator system and
other products in circumstances where they deem it medically appropriate, such as for the treatment of AF, even
though the FDA has not approved or cleared our products for that indication. In these circumstances, some
government or private payors, including some Medicare carriers, may make coverage and payment
determinations on a case-by-case basis. Additionally, some government or private payors may deem the
treatment of AF using our products for indications not approved or cleared by the FDA to be experimental or not
medically necessary and, as such, may not provide coverage or payment.

Acquisitions

On August 8, 2007 we acquired the Frigitronics CCS-200 product line for use in cardiovascular cryosurgery

and certain related assets from Cooper Surgical, Inc. for an aggregate purchase price of $3.7 million. The
acquired product line includes the Frigitronics CCS-200 console, which is currently used in combination with a
variety of reusable cardiac ablation probes. Prior to the acquisition, we were a worldwide distributor of the
product line. At closing, we paid $3.3 million, and issued an unsecured note for $0.4 million, which was paid in
full in January of 2008. Prior to the acquisition, we were a distributor of the acquired product line.

On August 10, 2005 we acquired Enable Medical Corporation, the manufacturer of our disposable Isolator

clamps, for an aggregate purchase price of $7.0 million ($6.4 million net of cash acquired).

Government Regulation

Our products are medical devices and are subject to regulation by the FDA, as well as other federal and state

regulatory bodies in the United States and comparable authorities in other countries. We currently market our
Isolator system and Coolrail device in the United States under a 510(k) clearance for the ablation of cardiac
tissue. Our multifunctional pen is marketed in the United States under a 510(k) clearance for temporary pacing,
sensing, stimulating and recording during the evaluation of cardiac arrhythmias and for the ablation of cardiac
tissue. We currently market the Lumitip dissector in the United States under a 510(k) clearance for use in the
dissection of soft tissues during general, ear, nose and throat, thoracic, urological and gynecological surgical
procedures. Our products may not be marketed for the treatment of AF without obtaining additional approvals
from the FDA.

The FDA requires that premarket approval, or PMA, be obtained for a device before it can be marketed for

the treatment of AF. During 2007 we worked with the FDA and leading cardiothoracic surgeons to design our
clinical trial, ABLATE, which was approved by the FDA for patients with permanent AF undergoing
concomitant open-heart surgical ablation procedures. If the clinical trial is successful, we anticipate filing a PMA
during 2010 which, if approved by the FDA, would allow us to market our Isolator system for the treatment of
patients with permanent AF during open-heart procedures. We cannot assure you that we will successfully
complete ABLATE, receive approval for any additional clinical trials or submit and obtain approval for any of
the products for use in treating AF.

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FDA regulations govern nearly all of the activities that we perform, or that are performed on our behalf, to
ensure that medical products distributed domestically or exported internationally are safe and effective for their
intended uses. The activities that the FDA regulates include the following:

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•

•

•

•

•

•

•

•

•

•

product design, development and manufacture;

product safety, testing, labeling and storage;

pre-clinical testing in animals and in the laboratory;

clinical investigations in humans;

premarketing clearance or approval;

record keeping and document retention procedures;

advertising and promotion;

the import and export of products;

product marketing, sales and distribution;

post-marketing surveillance and medical device reporting, including reporting of deaths, serious
injuries, device malfunctions or other adverse events; and

corrective actions, removals and recalls.

FDA’s Premarket Clearance and Approval Requirements. Unless an exemption applies, each medical
device distributed commercially in the United States will require either prior 510(k) clearance or a PMA from the
FDA. Medical devices are classified into one of three classes—Class I, Class II, or Class III—depending on the
degree of risk and the level of control necessary to assure the safety and effectiveness of each medical device.
Devices deemed to pose lower risks are placed in either Class I or II, which requires the manufacturer to submit
to the FDA a 510(k) notification requesting clearance to commercially distribute the device. Some low risk
devices are exempted from this requirement. Devices deemed by the FDA to pose the greatest risk, such as life-
sustaining, life-supporting or implantable devices, or devices deemed not substantially equivalent to a previously
cleared 510(k) device, or predicate device, are generally placed in Class III, requiring submission of a PMA
supported by clinical trial data.

In July 2007 the FDA determined that our Isolator system is a Class II device and granted us 510(k)
clearance to market our Isolator system for the ablation of cardiac tissue. During 2007 the FDA approved our
clinical trial, ABLATE. In order to market our Isolator system for the treatment of AF, the FDA will require that
we seek approval through submission to the FDA of a PMA. Submission of a PMA is a much more demanding
process than the 510(k) notification process. Both 510(k)s and PMAs must now be submitted with a potentially
substantial user fee payment to the FDA, although certain exemptions and waivers of the user fee can apply,
including certain exemptions and waivers for small businesses.

510(k) Clearance Pathway. When 510(k) clearance is required, we must submit a notification to the FDA
demonstrating that our proposed device is substantially equivalent to a predicate device, previously cleared and
legally marketed 510(k) device or a device that was in commercial distribution before May 28, 1976 for which
the FDA has not yet called for the submission of a PMA. The FDA is required to respond to a 510(k)
notification within 90 days of submission, but the response may be a request for additional information or data,
including clinical data. As a practical matter, 510(k) clearance often takes significantly longer than 90 days and
may take up to a year or more. If the FDA determines that the device, or its intended use, is not substantially
equivalent to a previously-cleared device or use, the device is automatically placed into Class III, requiring the
submission of a PMA. Any modification to a 510(k)-cleared device that would constitute a major change in its
intended use, design or manufacture, requires a new 510(k) clearance or, possibly, in connection with safety and
effectiveness, approval of a PMA. The FDA requires every manufacturer to make the determination regarding a

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new 510(k) submission in the first instance, but the FDA may review any manufacturer’s decision. We have
made modifications to elements of our products for which we did not believe that such modifications required us
to seek additional 510(k) clearance.

Premarket Approval Pathway. A PMA must be submitted to the FDA if the device cannot be cleared
through the 510(k) process and is not otherwise exempt. A PMA must be supported by extensive data, including
but not limited to technical, preclinical, clinical trials, manufacturing and labeling to demonstrate to the FDA’s
satisfaction the safety and effectiveness of the device.

After a PMA is submitted and the FDA has determined that the application is sufficiently complete to
permit a substantive review, the FDA will accept the application for filing. The FDA has 180 days to review an
“accepted” PMA, although the review of an application generally occurs over a significantly longer period of
time and can take up to several years. During this review period, the FDA may request additional information or
clarification of the information already provided. Also, 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 preapproval inspection of the manufacturing
facility to ensure compliance with quality system regulations. Any approvals we receive may be limited in scope
or may be contingent upon onerous post-approval study commitments or other conditions. New PMAs or PMA
supplements are required for significant modification to the device, including indicated use, manufacturing
process, labeling and design of a device that is approved through the premarket approval process. PMA
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 and may not
require as extensive clinical data or the convening of an advisory panel.

Clinical Trials. Clinical trials are required to support a PMA and are sometimes required for 510(k)

clearance. In the United States, clinical trials for a significant risk device require the prior submission of an
application for an Investigational Device Exemption, or IDE, to the FDA for approval. An IDE amendment must
also be submitted before initiating a new clinical study under an existing IDE, such as initiating a pivotal trial
following the conclusion of a feasibility trial. The IDE application must be supported by appropriate data, such as
animal and laboratory testing results, and any available data on human clinical experience, showing that it is safe
to test the device in humans and that the testing protocol is scientifically sound. The animal and laboratory
testing must meet the FDA’s good laboratory practice requirements.

The IDE and any IDE supplement for a new trial must be approved in advance by the FDA. Clinical trials
for significant risk devices may not begin until the IDE application or IDE supplement is approved by the FDA
and the appropriate institutional review boards, or IRBs, overseeing the welfare of the research subjects and
responsible for that particular clinical trial. If the product is considered a non-significant risk device under FDA
regulations, only the patients’ informed consent and IRB approval are required. Under its regulations, the agency
responds to an IDE or an IDE amendment for a new trial within 30 days. The FDA may approve the IDE or
amendment, grant an approval with certain conditions, or identify deficiencies and request additional
information. It is common for the FDA to require additional information before approving an IDE or amendment
for a new trial, and thus final FDA approval on a submission may extend beyond the initial 30 days. The FDA
may also require that a small-scale feasibility study be conducted before a pivotal trial may commence. In a
feasibility trial, the FDA limits the number of patients, sites and investigators that may participate. Feasibility
trials are typically structured to obtain information on safety and to help determine how large a pivotal trial
should be to obtain statistically significant results.

Clinical trials are subject to extensive recordkeeping and reporting requirements. Our clinical trials must be

conducted under the oversight of an IRB for the relevant clinical trial sites and must comply with FDA
regulations, including but not limited to those relating to good clinical practices. We are also required to obtain
the patients’ informed consent in form and substance that complies with both FDA requirements and state and
federal privacy and human subject protection regulations. We, the FDA or the IRB may suspend a clinical trial at

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any time for various reasons, including a belief that the risks to study subjects outweigh the anticipated benefits.
Even if a trial is completed, the results of clinical testing may not adequately demonstrate the safety and efficacy
of the device or may otherwise not be sufficient to obtain FDA approval to market the product in the United
States. Similarly, in Europe the clinical study must be approved by a local ethics committee and, in some cases,
including studies with high-risk devices, by the ministry of health in the applicable country.

Educational Grants. The FDA permits a device manufacturer to provide financial support, including
support by way of grants, to third-parties for the purpose of conducting medical educational activities. If these
funded activities are considered by the FDA to be independent of the manufacturer, then the activities fall outside
the restrictions on promotion to which the manufacturer is subject.

The FDA considers several factors in determining whether an educational event or activity is independent
from the substantive influence of the device manufacturer and therefore nonpromotional, including the following:

• whether the intent of the funded activity is to present clearly defined educational content, free from

commercial influence or bias;

• whether the third-party grant recipient and not the manufacturer has maintained control over selecting

the faculty, speakers, audience, activity content and materials;

• whether the program focuses on a single product of the manufacturer without a discussion of other

relevant existing competitive products or treatment options;

• whether there was meaningful disclosure to the audience, at the time of the program, regarding the

manufacturer’s funding of the program, any significant relationships between the provider, presenters,
or speakers and the supporting manufacturer and whether any unapproved uses will be discussed; and

• whether there are legal, business, or other relationships between the supporting manufacturer and the
provider or its employees that could permit the supporting manufacturer to exert influence over the
content of the program.

We seek to ensure that the activities we support pursuant to our educational grants program are in

accordance with these criteria for independent educational activities. However, we cannot provide an assurance
that the FDA or other government authorities would view the programs we have supported as being independent.

Pervasive and Continuing Regulation. There are numerous regulatory requirements that apply after a

product is cleared or approved. These include:

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•

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FDA’s Quality System Regulation, or QSR, which requires manufacturers, including third-party
manufacturers, to follow stringent design, testing, control, documentation and other quality assurance
procedures during all aspects of the manufacturing process;

labeling regulations and FDA prohibitions against the false or misleading promotion or the promotion of
products for uncleared, unapproved or off-label use or indication;

requirements to obtain clearance or approval of product modifications that could significantly affect
safety or efficacy or that would constitute a major change in intended use;

• medical device reporting, or MDR, regulations which require that manufacturers comply with reporting
requirements of the FDA and report 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 the
malfunction were to recur;

•

•

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post-approval restrictions or conditions, including post-approval study commitments;

post-market surveillance regulations, which apply when necessary to protect the public health or to
provide additional safety and effectiveness data for the device; and

requirements to issue notices of correction or removal, or conduct market withdrawals or recalls where
quality or other issues arise.

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From January 1, 2008 through February 28, 2009 we submitted to the FDA nine MDR’s related to

complications during procedures utilizing our products. Of these MDRs, seven related to our Isolator clamps and
two related to our Lumitip dissector. Included in the above MDR filings were two patient deaths, which we
included in our MDR filings; however, neither were categorized as outcomes related to the failure of our devices.
Additionally, there have also been other incidents, including patient deaths that have occurred using our Isolator
system and other products that we have not, and we believe were not required to be, reported to the FDA,
because we and our physician consultants determined that our products did not cause or contribute to the
outcomes in these incidents.

The 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 been the subject of enforcement action brought under healthcare reimbursement laws and
consumer protection statutes. In addition, under the Federal Lanham Act and similar state laws, competitors and
others can initiate litigation relating to advertising claims.

We have registered with the FDA as a medical device manufacturer. The FDA has broad post-market and

regulatory enforcement powers. We are subject to unannounced inspections by the FDA to determine our
compliance with the QSR and other regulations, and these inspections may include the manufacturing facilities of
our suppliers.

Failure by us or by our suppliers to comply with applicable regulatory requirements can result in
enforcement action by the FDA or other federal or state authorities, which may include any of the following
sanctions:

• warning letters, fines, injunctions, consent decrees and civil penalties;

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•

•

customer notifications, repair, replacement, refunds, recall or seizure of our products;

operating restrictions, partial suspension or total shutdown of production;

refusing our requests for 510(k) clearance or premarket approval of new products, new intended uses or
modifications to existing products;

• withdrawing 510(k) clearance or premarket approvals that have already been granted; and

•

criminal prosecution.

Fraud, Abuse and False Claims. We are directly and indirectly subject to various federal and state laws
governing our relationship with healthcare providers and pertaining to healthcare fraud and abuse, including anti-
kickback laws. In particular, the federal healthcare program 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, arranging for or recommending a
good or service, for which payment may be made in whole or part under federal healthcare programs, such as the
Medicare and Medicaid programs. Penalties for violations include criminal penalties and civil sanctions such as
fines, imprisonment and possible exclusion from Medicare, Medicaid and other federal healthcare programs. The
Anti-Kickback Statute is broad and prohibits many arrangements and practices that are lawful in businesses
outside of the healthcare industry. In implementing the statute, the Office of Inspector General of the U.S.
Department of Health and Human Services, or OIG, has issued a series of regulations, known as the “safe
harbors.” These safe harbors set forth provisions that, if all their applicable requirements are met, will assure
healthcare providers and other parties that they will not be prosecuted under the Anti-Kickback Statute. The
failure of a transaction or arrangement to fit precisely within one or more safe harbors does not necessarily mean
that it is illegal or that prosecution will be pursued. However, conduct and business arrangements that do not
fully satisfy each applicable element of a safe harbor may result in increased scrutiny by government
enforcement authorities, such as the OIG.

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The Federal False Claims Act, or FCA, imposes civil liability on any person or entity that submits, or causes

the submission of, a false or fraudulent claim to the United States Government. Damages under the FCA can be
significant and consist of the imposition of fines and penalties. The Federal False Claims Act also allows a
private individual or entity with knowledge of past or present fraud on the federal government to sue on behalf of
the government to recover the civil penalties and treble damages. The U.S. Department of Justice, on behalf of
the government, has successfully enforced the FCA against pharmaceutical and medical device manufacturers.
The federal government suit has alleged that pharmaceutical manufacturers whose marketing and promotional
practices were found to have included the off-label promotion of drugs or the payment of prohibited kickbacks to
doctors violated the FCA on the grounds that these prohibited activities resulted in the submission of improper
claims to federal and state healthcare entitlement programs such as Medicaid. Such manufacturers have entered
into criminal and civil settlements with the federal government under which they entered into plea agreements,
paid substantial monetary amounts and entered into corporate integrity agreements that require, among other
things, substantial reporting and remedial actions going forward.

We seek to structure our marketing practices such that they are not in violation of the FCA or state
equivalents and other applicable laws, but we cannot assure you that the federal authorities will not take action
against us and, if such action were successful, we could be required to pay significant fines and penalties and
change our marketing practices. Such enforcement could have a significant adverse effect on our ability to
operate. We engage in a variety of activities that are subject to these laws and that have come under particular
scrutiny in recent years by federal and state regulators and law enforcement entities. These activities have
included consulting arrangements with cardiothoracic surgeons, grants for training and other education, grants
for research, and other interactions with doctors. The U.S. Department of Justice-Civil Division is currently
investigating us for potential FCA and common law violations. See “Item 3. Legal Proceedings.”

AdvaMed is one of the primary voluntary United States trade associations for medical device

manufacturers. This association has established guidelines and protocols for medical device manufacturers in
their relationships with healthcare professionals on matters including research and development, product training
and education, grants and charitable contributions, support of third-party educational conferences, and consulting
arrangements. Adoption of the AdvaMed Code by a medical device manufacturer is voluntary, and while the
OIG and other federal and state healthcare regulatory agencies encourage its adoption and may look to the
AdvaMed Code, they do not view adoption of the AdvaMed Code as proof of compliance with applicable laws.
We have adopted the AdvaMed Code and incorporated its principles in our standard operating procedures, sales
force training programs, and relationships with doctors. Key to the underlying principles of the AdvaMed Code is
the need to focus the relationships between manufacturers and healthcare professionals on matters of training,
education and scientific research, and limit payments between manufacturers and healthcare professionals to fair
market value for legitimate services provided and payment of modest meal, travel and other expenses for a
healthcare professional under limited circumstances. We have incorporated these principles into our relationships
with healthcare professionals under our consulting agreements, payment of travel and lodging expenses, grant
making procedures and sponsorship of third-party conferences. In addition, we have conducted training sessions
on these principles. However, we can not provide any assurance that regulatory or enforcement authorities will
view these arrangements as being in compliance with applicable laws. AdvaMed has published an updated Code
which is effective July 1, 2009. The changes and modifications to the Code will be incorporated into our policies
and procedures.

Regulation Outside of the United States. Sales of medical devices outside of the United States are subject

to foreign governmental regulations, which vary substantially from country to country. The time required to
obtain certification or approval by a foreign country may be longer or shorter than that required for FDA
clearance or approval, and the requirements may be different.

The primary regulatory body in Europe is that of the European Union, which has adopted numerous

directives and has promulgated voluntary standards regulating the design, manufacture and labeling of and
clinical trials and adverse event reporting for medical devices. Devices that comply with the requirements of a

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relevant directive will be entitled to bear CE conformity marking, indicating that the device conforms to the
essential requirements of the applicable directives and, accordingly, can be commercially distributed throughout
the member states of the European Union, and other countries that comply with or mirror these directives. The
method for assessing conformity varies depending on the type and class of the product, but normally involves a
combination of self-assessment by the manufacturer and a third-party assessment by a notified body, an
independent and neutral institution appointed by a country to conduct the conformity assessment. This third-party
assessment may consist of an audit of the manufacturer’s quality system and specific testing of the
manufacturer’s device. Such an assessment is required for a manufacturer to commercially distribute the product
throughout these countries. International Standards Organization, or ISO 9001 and ISO 13845 certifications are
voluntary standards. Compliance establishes the presumption of conformity with the essential requirements for a
CE Marking. We have the authorization to affix the CE Mark to our Isolator clamps and to commercialize our
Isolator clamps in the European Union for the treatment of cardiac arrhythmias, including atrial fibrillation.

Intellectual Property

Protection of our intellectual property is a strategic priority for our business and we rely on a combination of

patent, copyright, trademark and trade secret laws to protect our interests. Our ability to protect and use our
intellectual property rights in the continued development and commercialization of our technologies and products,
operate without infringing the proprietary rights of others, and prevent others from infringing our proprietary rights
is crucial to our continued success. We will be able to protect our products and technologies from unauthorized use
by third parties only to the extent that they are covered by valid and enforceable patents, trademarks or copyrights or
are effectively maintained as trade secrets, know-how or other proprietary information.

We seek patent protection relating to our Isolator system and other important technologies we develop in

both the United States and in selected foreign countries. While we own much of our intellectual property,
including patents, patent applications, trademarks, trade secrets, know-how and proprietary information, we also
license patents and related technology of importance to commercialization of our products. For example, to
continue developing and commercializing our current and future products, we may license intellectual property
from commercial or academic entities to obtain the rights to technology that is required for our research,
development and commercialization activities.

All of our employees and technical consultants are required to execute confidentiality agreements in

connection with their employment and consulting relationships with us. We also require them to agree to disclose
and assign to us all inventions conceived in connection with their relationship with us. We cannot provide any
assurance that employees and consultants will abide by the confidentiality or assignment terms of these
agreements. Despite measures taken to protect our intellectual property, unauthorized parties might copy aspects
of our Isolator system or obtain and use information that we regard as proprietary. We devote significant
resources to obtaining patents and other intellectual property and protecting our other proprietary information.
We have already obtained patents or filed patent applications on a number of our technologies, including patents
and patent applications relating to our Isolator system and other products. If valid and enforceable, these patents
may give us a means of blocking competitors from using infringing technology to compete directly with our
products. We also have certain proprietary trade secrets that may not be patentable or for which we have chosen
to maintain secrecy rather than file for patent protection. With respect to proprietary know-how that is not
patentable, we have chosen to rely on trade secret protection and confidentiality agreements to protect our
interests. As of December 31, 2008, we had issued United States patents that will expire between 2015 and 2024.

As of December 31, 2008, we had the following portfolio of patents or patent applications covering our

proprietary technologies and products:

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•

•

31 issued or approved United States patents;

25 United States non-provisional patent applications;

3 United States provisional patent applications;

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•

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4 issued foreign patents; and

15 pending foreign patent applications that are in various national stages of prosecution.

Manufacturing

We manufacture a substantial majority of the disposable products we sell and generally purchase items that

would be deemed capital equipment, including our ASU, ASB and ORLab. We inspect, assemble, test and
package our products in West Chester, Ohio and our products are sterilized by third-party outside sterilizers at
their facilities. Purchased components are generally available from more than one supplier. However some
products, such as our ASU and ASB, are critical components of our Isolator system, and there are relatively few
alternative sources of supply available. We generally carry a six month supply of these products, however,
obtaining a replacement supplier for the ASU and ASB, if required, may not be accomplished quickly or at all
and could involve significant additional costs. Generally, our suppliers have no contractual obligations to supply
us with, and we are not contractually obligated to purchase from them, any of our supplies. During 2007, we
entered into a development, manufacturing and supply agreement with MicroPace Pty Ltd of Australia to
develop, manufacture and supply our new integrated mapping system, MicroPace ORLab. Under the terms of the
agreement, we are obligated to certain minimum purchase commitments through 2010 in order to retain exclusive
distribution rights.

Order quantities and lead times for components purchased from outside suppliers are based on our forecasts
derived from historical demand and anticipated future demand. Lead times may vary significantly depending on
the size of the order, time required to fabricate and test the components, specific supplier requirements and
current market demand for the components and subassemblies. To date, we have not experienced significant
delays in obtaining any of our components. There are no unique or proprietary processes required in
manufacturing our components. We generally do not have contractual obligations that preclude us from
developing products or sourcing components from new suppliers.

We and our component suppliers are required to manufacture our products in compliance with the FDA’s

QSR. The QSR regulates extensively the methods and documentation of the design, testing, control,
manufacturing, labeling, quality assurance, packaging, storage and shipping of our products. The FDA enforces
the QSR through periodic inspections that may be announced or unannounced and may include the
manufacturing facilities of our suppliers. Our failure or the failure of our suppliers to maintain compliance with
the QSR requirements could result in the shutdown of our manufacturing operations or the recall of our products,
which would have a material adverse effect on our business. In the event that one of our suppliers fails to
maintain compliance with our quality requirements, we may have to qualify a new supplier and could experience
manufacturing delays as a result. We also could be subject to injunctions, product seizures, or civil or criminal
penalties.

We regularly audit our suppliers for compliance with QSR and applicable ISO standards. We have been an
FDA-registered medical device manufacturer since November 2002. We obtained our CE Mark in June of 2002
and our quality systems and facility practices are certified to ISO 13485:2003; MDD 93/42/EEC, or CE Mark,
and CMDCAS, or Canadian regulations. We believe that we are currently in good standing with the FDA and are
subject to pre-announced inspections. Our current quality system is developed to comply with QSR and ISO
standards.

In June 2006, the FDA conducted a Bioresearch Monitoring Inspection of the conduct of our FDA-regulated

clinical trials and a Quality Systems Inspection of the manufacture of our products. We were notified that these
inspections were part of a for-cause inspection. At the close of the inspections and in subsequent
communications, the FDA advised us that it would not be issuing us a Form 483 documenting formal
inspectional observations. We received a final Establishment Inspection Report from the FDA on November 9,
2006. The report included two recommendations for continuous improvements, which were brought to our
attention during the inspection and were implemented and reviewed by the close of the inspection.

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We are subject to numerous federal, state and local laws relating to such matters as laboratory practices, the
experimental use of animals, the use and disposal of hazardous or potentially hazardous substances, safe working
conditions, manufacturing practices, environmental protection and fire hazard control. We may incur significant
costs to comply with those laws and regulations now or in the future, but we do not expect that such compliance
will have a material impact on our business.

We are currently increasing our manufacturing capabilities as our business grows and as we introduce and

obtain approvals for new products. Manufacturers can experience difficulties in significantly scaling up
production capacities, which may include problems with capacity, production yields and quality control. If we
are unable to manufacture our products to keep up with demand, we may not meet expectations for growth of our
business.

Product Development

Our product development group develops product enhancements and new products to address unmet

procedural and market needs with the goal of increasing revenues and optimizing procedural outcomes. Our
current product development activity includes projects extending and improving our existing products, the
creation of new enabling devices, such as our Coolrail device and research into new technologies. Enabling
devices, such as our multifunctional pen, our Coolrail device and our Lumitip dissector are becoming an
increasingly larger portion of our development portfolio and revenues. Examples of devices which extend our
product line into new markets include the development of the AtriCure Left Atrial Appendage Exclusion System.
Our product lines have also been advanced through software improvements, cost savings and support for
increased production capacity.

The Cleveland Clinic Foundation and Case Western Reserve University and collaborating businesses,
including us, received publicly announced grants from the State of Ohio for, among other things, the creation of
the Atrial Fibrillation Innovation Center. Pursuant to the terms of the agreement, effective as of June 2005, we
are required to supply personnel and materials to accomplish certain research-related activities in connection with
the grant and, over a three and one-half-year period, we will receive up to a total of $0.9 million for personnel
and materials and The Cleveland Clinic will acquire up to $2.4 million in capital equipment for our use in
support of our performance of the agreement. Over the same period, we are required to expend up to $7.7 million
for operating expenses and up to $4.8 million for capital expenditures in support of the agreement. We believe
these represent ordinary course expenditures that we would have otherwise anticipated making. Through
December 31, 2008, we have earned the entire $0.9 million under the grant in support of operating expenses and
$2.3 million in acquired capital equipment. The agreement was to terminate on December 31, 2008 but was
amended to extend the capital equipment and expenditure provisions through December 31, 2009. The agreement
may be terminated at any time by either party by giving 30 days prior written notice. In November 2003, we
entered into license and related agreements with the Cleveland Clinic and a third party engineering company for
the development of the AtriCure Left Atrial Appendage Exclusion system. Under this arrangement, we granted
33,157 stock options at fair market value to each of the Cleveland Clinic and the engineering company upon
satisfaction of a milestone tied to the technical feasibility and commercial viability of the licensed intellectual
property, in addition to payment of royalties to each of the Cleveland Clinic and the engineering company equal
to 2.5% of net sales of any commercialized products using the licensed technology. As of December 31, 2008, all
stock options granted to the Cleveland Clinic expired unexercised.

Consulting Relationships

We have developed consulting relationships with a number of leading scientists and doctors to give our

research and development team additional technical and creative breadth. We work closely with these thought
leaders to understand unmet needs and emerging applications for the treatment of AF. We typically enter into a
written agreement with the consultant pursuant to which the consultant is obligated to provide services such as
advising us as to the design and development of our products, educating doctors on the FDA-cleared or approved

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use of our technologies, conducting clinical trials and providing supporting data for clinical trials and providing
advice concerning grants and regulatory submissions. These agreements are generally for a term of one year and
may generally be terminated by us or by the consultant upon written notice. Generally, we own the rights to any
inventions or ideas made or conceived by our consultants during performance of the consulting services.

Most of our consulting agreements provide for payment of compensation in cash only and on a per diem
basis (in addition to travel and other expenses), upon determination by us that services have been provided to our
satisfaction. In addition, under agreements entered into prior to the fourth quarter of 2005, some of our
consultants were entitled to receive stock options. We do not expect or require the consultant to utilize or
promote our products, and consultants are required to disclose their relationship with us as appropriate, such as
when publishing an article in which one of our products is discussed. See “Risk Factors—Risks Relating To Our
Business—We may be subject to fines, penalties, injunctions and other sanctions if we are deemed to be
promoting the use of our product for non-FDA-approved, or off-label, uses.”

We entered into a consulting agreement, dated as of January 1, 2007, with Michael D. Hooven, our
co-founder and also one of our directors. Under the terms of the agreement, Mr. Hooven provided consulting
services and advice to us with respect to the creation and development of new products and product platforms
relating to cardiac arrhythmias and the prevention or reduction of strokes using cardiac devices. As consideration
for his services and for assigning the rights to certain intellectual property as provided for in the agreement,
Mr. Hooven was paid $12,000 per month. The term of the agreement was one year, with the exception of certain
non-compete and non-solicitation provisions which expire on December 31, 2009.

During 2009, we entered into a consulting agreement with Enable Medical Technologies, an entity founded
and owned by Michael D. Hooven. Under the terms of the agreement, Enable Medical Technologies will provide
research and development consulting services related to product and procedural development activities. Under
the agreement, Enable Medical Technologies will receive $216,000 as a development fee and, upon completion
of certain milestones, may earn up to an additional $30,000. The term of the agreement is six months.

Royalty Agreement

On November 21, 2005, we entered into a royalty agreement, effective as of October 1, 2005, with

Randall K. Wolf, M.D., the co-inventor of the Lumitip dissector. Pursuant to the terms of the agreement, we will
pay Dr. Wolf royalties based on product revenues from sales of the Lumitip dissector and certain other
inventions, improvements or ideas, at royalty rates which range from 1.5% to 15% of such revenues. During the
term of the agreement we are required to pay Dr. Wolf a minimum of $50,000 in royalties per quarter and up to a
maximum aggregate of $2.0 million in royalties during the term of the agreement. The agreement terminates on
December 31, 2009 however, we and Dr. Wolf each have the right at any time to terminate the agreement
immediately for cause. Royalties to Dr. Wolf related to 2008 sales of the Lumitip dissector were $0.2 million.

Employees

As of December 31, 2008, we had approximately 200 full-time employees. None of the employees was
represented by a labor union or was covered by a collective bargaining agreement. We have never experienced
any employment-related work stoppages and consider our employee relations to be good.

Corporate History

We were incorporated in the State of Delaware as AtriCure, Inc. on October 31, 2000 in connection with a
spin-off transaction from Enable Medical Corporation, in which shares of our common stock were given to the
Enable shareholders. The spin-off was intended to allow us to focus on the development of products designed to
treat AF and to raise capital for that purpose, while Enable continued its broader research and manufacturing
activities. On August 5, 2005, we completed an initial public offering of our common stock. On August 10, 2005

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we acquired Enable Medical Corporation, the manufacturer of our Isolator clamps, which are an essential part of
our Isolator system. Additionally, in December 2005, we formed AtriCure Europe, B.V., our wholly-owned
subsidiary incorporated in the Netherlands.

Available Information

We are subject to the reporting requirements under the Securities Exchange Act of 1934. Consequently, we

are required to file reports and information with the Securities and Exchange Commission, or SEC, including
reports on the following forms: Form 10-K, Form 10-Q, Form 8-K, and amendments to those reports filed or
furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934. These reports and other
information concerning us may be accessed through the SEC’s website at http://www.sec.gov. You may also
find, free-of-charge, on our website at http://www.atricure.com electronic copies of our Form 10-Ks,
Form 10-Qs, Form 8-Ks, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of
the Securities Exchange Act of 1934. Such filings are placed on our website as soon as reasonably possible after
they are filed with the SEC. Our charters for our Audit, Compensation and Nominating and Corporate
Governance Committees and our Code of Ethics are available on our website. In the event that we grant a waiver
under our Code of Ethics to any of our officers and directors, we will publish it on our website. Information
contained in any of our websites is not deemed to be a part of this Form 10-K.

ITEM 1A. RISK FACTORS

Risks Relating To Our Business

We expect to derive a majority of our future revenues from the sale of our Isolator system and related
products. If our Isolator system and related products lose, or fail to gain, market acceptance for the
treatment of AF, we may not generate sufficient revenues to continue our operations.

Currently, our primary product line is our Isolator system. We expect that sales of our Isolator system and

related products will account for a majority of our revenues for the foreseeable future and that our future
revenues will depend on the increasing acceptance by the medical community of our Isolator system and related
products as a standard treatment alternative for the surgical treatment of AF during open-heart surgical
procedures and as a sole-therapy minimally invasive procedure.

Acceptance of our Isolator system and related products for the treatment of AF is dependent upon, among

other factors, the level of screening for AF and the awareness and education of the medical community about the
surgical treatment of AF, in general, and the existence, effectiveness and, in particular, the safety of our Isolator
system and related products. Our Isolator system and related products as well as the procedures involved with the
treatment of AF using our products, are relatively new. We cannot assure you that doctors will continue to use
our Isolator system and related products or that demand for the surgical treatment of AF will not decline or will
not increase as quickly as we expect.

We may not be able to maintain or increase market acceptance of our Isolator system and related products

for a number of additional reasons, including those set forth elsewhere in this “Risk Factors” section.

Since we believe that doctors are using our Isolator system only for the surgical treatment of AF, if doctors

do not use our Isolator system and other products to treat AF, we would lose substantially all of our revenues.

Current worldwide economic conditions may result in reduced procedures using our products, which
would adversely affect our revenues.

General worldwide economic conditions have experienced a significant downturn due to the effects of the

subprime lending crisis, general credit market crisis, collateral effects on the finance and banking industries,
concerns about inflation, slower economic activity, decreased consumer confidence, reduced corporate profits

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and capital spending, adverse business conditions and liquidity concerns. Our business is not immune. We
believe the current worldwide economic crisis has resulted and may continue to result in reduced procedures
using our products. Many of the procedures that use our products are, to some extent, elective and therefore can
be deferred by patients. In light of the current economic conditions, patients may not be as willing to take time
off from work or spend their money on deductibles and co-payments often required in connection with the
procedures that use our products. In particular, patients that have high-deductible health plans and health savings
accounts and thus require the patients to incur significant out-of-pocket costs may defer procedures in the current
economic environment. We are unable to predict how these economic conditions will impact our future revenues.

Current worldwide economic conditions may have other adverse implications on our business, operating
results and financial condition.

Beyond patient demand, the worldwide economic crisis, including in particular its effect on the credit and

capital markets, may have other adverse implications for our business. For example, our customers’ ability to
borrow money from their existing lenders or to obtain credit from other sources to purchase our products may be
impaired resulting in a decrease in sales. Although we maintain allowances for doubtful accounts for estimated
losses resulting from the inability of our customers to make required payments, we cannot guarantee that we will
accurately predict the loss rates we will experience, especially given the current turmoil in the worldwide
economy. A significant change in the liquidity or financial condition of our customers could cause unfavorable
trends in our receivable collections and additional allowances may be required, which could adversely affect our
operating results.

Healthcare costs have risen significantly over the past decade. There have been and may continue to be
proposals by legislators, regulators and third-party payors to keep, contain or reduce healthcare costs.

The continuing efforts of governments, insurance companies and other payors of healthcare costs to contain

or reduce these costs, combined with closer scrutiny of such costs, could lead to patients being unable to obtain
approval for payment from these third-party payors. The cost containment measures that healthcare providers are
instituting both in the United States and internationally could harm our business. Some health care providers in
the United States have adopted or are considering a managed care system in which the providers contract to
provide comprehensive health care for a fixed cost per person. Health care providers may attempt to control costs
by authorizing fewer elective surgical procedures or by requiring the use of the least expensive devices possible,
which could adversely affect the demand for our products or the price at which we can sell our products.

Our quarterly financial results are likely to fluctuate significantly because our sales prospects are
uncertain.

Due to current worldwide economic conditions and other factors discussed in this “Risk Factors” section

which may impact our sales results, our quarterly operating results are difficult to predict and may fluctuate
significantly from quarter to quarter or from prior year to current year periods, particularly because our sales
prospects are uncertain. These fluctuations may also affect our annual operating results and may cause those
results to fluctuate unexpectedly from year to year.

Use of our Isolator system and related products as a sole-therapy minimally invasive treatment for AF,
which is not currently a well-established market, represents our major growth opportunity. If this market
does not further develop or our Isolator system and related products are not widely adopted for use in this
market, it may adversely impact our ability to grow our revenues.

We believe that sole-therapy minimally invasive surgical treatment for AF, which is not currently a well-
established market, will ultimately represent the largest segment of the market for the surgical treatment of AF. If
this market fails to further develop, or if our Isolator system and related products are not widely adopted for use
in this market, it may adversely impact our ability to grow our revenues. In order to further establish the sole-

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therapy minimally invasive AF treatment market, doctors treating patients with AF who would not otherwise
require an open-heart surgical procedure must change their current practice of referring patients to cardiologists
and electrophysiologists and instead refer these patients to cardiothoracic surgeons for surgical AF treatment.
Doctors may decide not to change their referral patterns for a variety of reasons including, for example, negative
publicity relating to our clinical studies, products or marketing practices, negative publicity or concern regarding
our ongoing investigation by the United States Department of Justice, that limited clinical data is available
relating to the safety and effectiveness of our Isolator system and related products, that clinical testing of our
Isolator system and related products are in an early stage, that doctors who refer their patients to cardiothoracic
surgeons may risk losing their patients and that doctors may prefer to treat patients using drugs or catheter-based
ablation. If doctors do not refer their patients to cardiothoracic surgeons for surgical AF treatment, we will not be
able to further establish a market for the use of our Isolator system and related products for the sole-therapy
minimally invasive treatment of AF, and our future growth and revenues will suffer.

The failure to educate or train a sufficient number of doctors in the use of our Isolator system and related
products could reduce the market acceptance of our products and reduce our revenues.

It is critical to the success of our sales efforts to ensure that there are a sufficient number of doctors familiar
with, trained on and proficient in the use of our Isolator system and related products. While we educate and train
doctors as to the skills involved in the proper use of our Isolator system and related products, it is not our policy
to educate or train them to use our Isolator system or related products for the surgical treatment of AF unless and
until we obtain FDA approval. Currently, doctors learn to use our Isolator system and related products for the
treatment of AF through independent training programs provided by hospitals and universities and through
independent peer-to-peer training among doctors. We provide research and educational grants to institutions,
some of which are used to fund programs to teach the procedures involved in the surgical treatment of AF,
including the use of our Isolator system and our related products for such treatment. However, while we make
doctors generally aware of these programs, these institutions determine the faculty and the content of the
programs. We also rely on doctors to independently inform their colleagues about these programs. We cannot
assure you that a sufficient number of doctors will become aware of training programs or that doctors will
dedicate the time, funds and energy necessary for adequate training in the use of our Isolator system.

Unless we obtain FDA approval, we will not be able to promote our Isolator system or related products to
treat AF and our ability to maintain and grow our business could be harmed.

Generally, a medical device company must first obtain either FDA clearance through the submission to the
FDA of a 510(k) notification or FDA approval through the submission of a pre-market approval application, or
PMA, before a company may market a medical device in the United States. Certain modifications to a previously
marketed device, including a proposed new use or new indication for the device, also require the submission to
the FDA of either a 510(k) or PMA before such device with the modifications may be marketed. The process of
obtaining these clearances and approvals can be lengthy and expensive. The PMA process is more costly, lengthy
and uncertain than the 510(k) process and requires that the device be found to be safe and effective and must be
supported by extensive data, including data from preclinical studies and human clinical trials. Though less likely,
a 510(k) application may require human clinical trials as well, such as with our Left Atrial Appendage Exclusion
System. Because we cannot assure you that any new products, or any product enhancements, that we develop
will be subject to the shorter 510(k) clearance process, significant delays in the introduction of any new products
or product enhancement may occur.

We have not received FDA clearance or approval to promote our Isolator system or other products for the

treatment of AF and, until July of 2007, we were unable to promote our Isolator system for the ablation of
cardiac tissue. See “Business—Government Regulation”. Although our Isolator system, our multifunctional pen
and Coolrail device have cardiac tissue ablation clearance, we still need to obtain separate approvals from the
FDA for use of our products in the treatment of AF as part of an open-heart procedure and as a sole-therapy
minimally invasive procedure through the submission of separate PMAs to the FDA. Unless and until we obtain

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FDA clearance or approval for the use of our products for the treatment of AF we, and others acting on our
behalf, may not promote our Isolator system or other products for such uses, make any claim that our system is
safe and effective for such uses, or proactively discuss or provide information on the use of our system in
connection with such uses.

We cannot assure you that future clearances or approvals of our Isolator system or other products will be

granted or that current or future clearances or approvals of our system will not be withdrawn. Failure to obtain a
clearance or approval or loss of an existing clearance or approval, could hurt our ability to maintain and grow our
business.

Unless we are able to complete the clinical trials required to support future submissions to the FDA, and
unless the data generated by such trials supports the use of our Isolator system and other products for the
treatment of AF as safe and effective, we may not be able to secure additional FDA clearances or
approvals and our ability to maintain and grow our business could be harmed.

In order to obtain FDA approvals to promote our Isolator system and other products for the treatment of AF,

we will need to demonstrate in clinical trials that our products are safe and effective for such use. In order to
conduct clinical trials, it is necessary to receive an investigational device exemption, or IDE, from the FDA.
While we have obtained the required IDE from the FDA for the conduct of clinical trials for the use of our
Isolator system as a treatment for AF during open-heart surgical procedures in support of our ABLATE trial, the
FDA or institutional review boards, or IRBs, that also oversee the trials for the purpose of protecting the study
subjects can halt clinical trials at any time for safety reasons or because we or any of our clinical investigators do
not follow the FDA’s requirements for conducting clinical trials. In addition, the FDA may modify its
requirements with respect to various aspects of our clinical study, in which case our ongoing clinical trial may
not be achievable. Moreover, future clinical trials of our Isolator system to treat AF as a sole-therapy minimally
invasive procedure will likely proceed in phases beginning with a further feasibility trial. The FDA has granted
us an IDE to conduct a feasibility and efficacy study relating to the use of our Isolator clamps for the sole-therapy
minimally invasive treatment of AF, but there is no guarantee that the FDA will grant us approval to conduct
broader clinical trials. If we are unable to receive approval to conduct broader clinical trials or the trials are
halted by the FDA or others, we would not be able to promote our Isolator system for use in the treatment of AF
in the United States.

Since 2004 we have been conducting the RESTORE-SR trial, a clinical trial to support the submission of
our PMA seeking FDA approval to use our Isolator system for the treatment of AF during elective open-heart
procedures and enrollment in the trial was slower than expected. As of March 15, 2007, we had enrolled 39
treatment arm patients and only 5 control arm patients required for this multicenter, 226-patient clinical trial (113
patients in each arm). During 2007, we discontinued enrolling new patients in the trial, and the trial is currently
going through its final close-out stages. The results from this trial were used in support of the cardiac clearance
we obtained from the FDA in July 2007 for our Isolator system. During 2007, we worked with the FDA to
redesign the RESTORE-SR trial and filed a new IDE and began enrollment into our redesigned open-heart trial
for the treatment of patients with long-standing persistent AF, ABLATE. As with the current RESTORE-SR trial,
we cannot assure you that our ABLATE clinical trial will be completed in a timely manner or successfully or that
the results obtained will be acceptable to the FDA.

As of May 31, 2006 we completed enrollment in our RESTORE-SR II study, a clinical study to evaluate the

feasibility of using our Isolator clamps as a sole-therapy minimally invasive treatment for AF. This study
enrolled 25 patients at 5 leading United States centers. During 2007 we worked with our investigators to write a
clinical report to the FDA and utilized this clinical data in support of adding a new arm to the study,
RESTORE-SR IIB. In RESTORE-SR IIB, we intend to study patients experiencing persistent and long-standing
persistent AF using our Isolator Synergy system. We are not currently enrolling patients in this study and we can
not assure you that this study will be completed, be completed in a timely manner or successfully or that the
results obtained will be acceptable to the FDA.

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In 2006 the FDA conducted an inspection of one of the lead investigators of our RESTORE-SR II clinical

study and identified a number of adverse observations concerning his compliance with good clinical practice
requirements. The FDA has found no deficiencies at the conclusion of a subsequent related inspection of
AtriCure. However, we cannot assure you that the FDA’s inspections will not effect subsequent FDA review of
the data from that study or that other issues with the FDA will arise in the future as a result of this inspection.

Clinical trials and regulatory approval of our Isolator system and other products for the treatment of AF can

take a number of years to accomplish and require the expenditure of substantial financial, managerial and other
resources, and we may never obtain regulatory approval for the use of our Isolator system or other products to
treat AF in either an open-heart procedure or a sole-therapy minimally invasive procedure. The FDA may not
grant approval to use our Isolator system or other products for the treatment of AF in all types of patients that
experience AF, if any, or could limit the type of AF that could be treated using our products. If we do not secure
required FDA approval to promote our Isolator system for either or both types of procedures, our business,
results of operations and prospects would be negatively affected as a result.

Further, we cannot make comparative claims regarding the use of our Isolator system or other products
against any alternative treatments without conducting comparative clinical studies which would be expensive and
time-consuming. We do not have any current plans to conduct such comparative clinical studies to evaluate our
Isolator system or other products against any alternative method of treatment.

If the available data on the use of our Isolator system and other products from clinical trials and marketing

experience does not establish the safety or effectiveness of our products, our clinical trials may be halted, our
system may be withdrawn from the market and we may be prohibited from further distribution and sale of our
products.

If the results obtained from our clinical trials, any other clinical studies, or clinical or commercial

experience indicate that our Isolator system or other products are not safe or effective, or not as safe or effective
as other treatment options, the FDA may not approve our products for the treatment of AF, adoption of the use of
our products for the treatment of AF may suffer and our business would be harmed.

We have experienced and may continue to experience unfavorable publicity relating to our business and
our industry. This publicity has had and may continue to have a negative impact on our ability to attract
and retain customers, our sales, clinical studies involving our products, our reputation and our stock price.

We believe that we experienced a negative impact on our business from newspaper articles published during
the fourth quarter of 2005, the first quarter of 2006 and the fourth quarter of 2008 relating to, among other things,
concerns of conflicts of interest between the Cleveland Clinic and us, our compliance with FDA regulations for
medical device reporting, concerns that certain of our consultants who are involved with clinical studies of and
the publication of articles concerning our products failed to adequately disclose their financial relationships with
us and our investigation by the Department of Justice. Because some of these articles related to the validity of
important clinical data on the use of our Isolator system and involved a prominent surgeon and two of the
prestigious institutions which were early proponents and investigators of our system, some current and potential
customers have been and may continue to be reluctant to purchase our products. Articles related to the
Department of Justice investigation may also adversely impact our sales to current and potential customers. We
also believe that publicity has had and may continue to have a negative impact on clinical studies involving our
Isolator system. We cannot assure you that this publicity or similar unfavorable publicity will not adversely
impact future clinical studies involving our products or adversely impact our current or future submissions to the
FDA. We believe that this publicity has had and may continue to have a negative impact on our business, results
of operations and financial condition. We also believe that future unfavorable publicity could cause other adverse
effects, including a further decline in the price of our stock.

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We may be subject to fines, penalties, injunctions and other sanctions if we are deemed to be promoting
the use of our products for non-FDA-approved, or off-label, uses.

Our business and future growth depend on the continued use of our products for the treatment of AF, which
is considered an off-label use of our products. Under the Federal Food, Drug, and Cosmetic Act and other laws,
we are prohibited from promoting our products for off-label uses. This means that prior to July 2007 we could
not make claims about the safety or effectiveness of our Isolator system for the ablation of cardiac tissue. We
may not make claims about the safety or effectiveness of our products for the treatment of AF and may not
proactively discuss or provide information on the use of our products for the treatment of AF, except in certain
limited scientific and other settings.

Due to these constraints, our sales and marketing efforts focus only on the general technical attributes and
benefits of our Isolator system and products and not on the use of our products for the treatment of AF. At the
same time, we provide certain support for the use of our Isolator system, our multifunctional pen and our Coolrail
device along with other products in the treatment of AF that we believe is non-promotional and therefore
permitted. In particular, since our products are only being used by doctors for the treatment of AF, we train our
sales force on the use of our system and products by physicians to treat AF, and off-label sales are included in
our sales force compensation structure. Sales personnel call on cardiothoracic surgeons, electrophysiologists, and
other doctors to discuss the general attributes of our Isolator system and other products and respond in a
non-promotional manner to unsolicited requests for information from doctors on the use of our system in the
treatment of AF by providing copies of and citations to peer-reviewed journal articles and/or other training and
instructional tools. In addition, medically trained clinical application specialists attend surgical procedures to
discuss the general attributes of our Isolator system and products and respond to unsolicited requests for
information on the use of our products for the treatment of AF. We have entered into consulting agreements with
prominent cardiothoracic surgeons and electrophysiologists who assist us with, among other things, product
development and clinical development. In addition, we provide financial support in the form of research and
educational grants to several leading institutions in the cardiac field, which they may use to conduct physician
training programs, including programs relating to the surgical treatment of AF using our products. We also
provide some guidance to physicians and medical institutions regarding what physicians are available and
qualified for training other physicians on the use of our products in the treatment of AF. We also continue to
make improvements in our Isolator system and other products which could be viewed as supporting the treatment
of AF.

There is a material risk that the FDA or other federal or state law enforcement authorities could determine

that the nature and scope of these activities constitute the promotion of our products for a non-FDA-approved use
in violation of the law. We also face the risk that the FDA or other governmental authorities might pursue
enforcement based on past activities that we have discontinued or changed, including sales activities,
arrangements with institutions and doctors, educational and training programs and other activities.

The U.S. Department of Justice, or DOJ, is currently conducting an investigation for potential False Claims

Act and common law violations relating to our surgical ablation devices. Specifically, the DOJ is investigating
our marketing and promotional practices in connection with our Isolator system to treat AF, a specific use outside
of the FDA’s 510(k) clearance. The DOJ is also investigating whether we caused hospitals to bill Medicare for
surgical ablation using incorrect billing codes. We understand that other manufacturers of medical devices used
in the treatment of AF have also received letters from the DOJ stating that they are under investigation for the
same or similar activities. This investigation has resulted, and is expected to continue to result, in a diversion of
management’s attention and resources and in significant professional fees. These professional fees have
increased, and in the near term may continue to increase our cash needs.

Government investigations concerning the promotion of off-label uses and related issues are typically
expensive, disruptive and burdensome and generate negative publicity. If our promotional activities are found to
be in violation of the law or if we agree to a settlement in connection with the current DOJ investigation or any
other enforcement action, we would likely face significant fines and penalties and would likely be required to

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change substantially our sales, promotion, grant and educational activities. There is also a possibility that we
could be enjoined from making sales of our Isolator system and other products for any non-FDA-approved use,
which effectively would bar all sales of our products until we receive FDA clearances or approval, if ever. In
addition, as a result of the DOJ investigation or any other enforcement actions against us or our executive
officers, we could be excluded from participation in government healthcare programs such as Medicare and
Medicaid.

An adverse resolution of the DOJ investigation could have a material adverse effect on our financial
position and results of operations. Concerns with respect to the circumstances surrounding the pending DOJ
investigation may have created uncertainty regarding our ability to focus on our business operations and remain
competitive with other companies in our industry.

The use of products we sell may result in injuries or other adverse events that lead to product liability
suits, which could be costly to our business or our customers’ business.

The use of products we sell may result in a variety of serious complications, including damage to the heart,

internal bleeding, death or other adverse events, potentially leading to product liability claims. Serious
complications, including death, have been encountered in connection with the surgical treatment of AF, including
in connection with a limited number of sole-therapy minimally invasive procedures in which our Isolator system
and other products were used. Although our manufacturing processes and those of our suppliers are required to
comply with the FDA’s quality system regulations, or QSR, covering the procedures and documentation of the
design, testing, production, control, quality assurance, labeling, packaging, storage and shipping of our products,
if products we sell are defectively designed, manufactured or labeled, contain inadequate warnings, contain
defective components or are misused, we may become subject to costly litigation by our customers or their
patients.

We carry product liability insurance that is limited in scope and amount and may not be adequate to fully

protect us against product liability claims. We could be required to pay damages that exceed our insurance
coverage. Any product liability claim, with or without merit, could result in an increase in our product insurance
rates or our inability to secure coverage on reasonable terms, if at all. Even in the absence of a claim, our
insurance rates may rise in the future. Any product liability claim, even a meritless or unsuccessful one, would be
time-consuming and expensive to defend and could result in the diversion of our management’s attention from
our business and result in adverse publicity, withdrawal of clinical trial volunteers, injury to our reputation and
loss of revenue. Any of these events could negatively affect our earnings and financial condition.

Our current inability to educate or train doctors in the use of our Isolator system and other products for
the treatment of AF, due to legal prohibitions on off-label promotion of medical devices, could result in
injuries to patients or other adverse events that lead to litigation against us, which could be costly to our
business.

Our sales team educates doctors in the technology and general application of our products, but it is our

policy not to educate or train doctors to use our system for the surgical treatment of AF. Hospitals and
universities offer independent educational programs for the treatment of AF utilizing our Isolator system and
other products, and there is independent doctor-to-doctor training to use our system for the treatment of AF. We
do not require that doctors who use our products have any specific training in the use of our products. We cannot
assure you that doctors utilizing our products are using them correctly. Because we rely on training by hospitals
and universities and doctor-to-doctor training, we do not control the quality of the training received by the
doctors who use our Isolator system and other products. Not requiring training on the use of our products may
expose us to greater risk of product liability for injuries occurring during procedures utilizing our system. If
demand for our Isolator system and other products grows, the increased number of procedures performed using
our products may lead to more injuries and an increased risk of product liability. In addition, the off-label use of
our Isolator system and other products may expose us to greater risks relating to product liability claims.

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Serious complications arising out of surgical procedures for the treatment of AF, including surgical AF
treatments involving our Isolator system and other products could harm our business in a variety of
important ways.

Serious complications, including death, have been encountered in connection with the surgical treatment of
AF, including in connection with a limited number of sole-therapy minimally invasive procedures in which our
products were used. The rate of serious complications associated with surgical AF treatments in general, or
surgical AF treatments involving the use of our Isolator system in particular, may be greater than the rate of
serious complications associated with alternative therapies for the treatment of AF or AF itself.

Adverse outcomes, or the perception that surgical AF treatments, including treatments involving the use of
our Isolator system and related products, are not safe, could harm our business, including in the following ways:

•

•

•

•

•

•

our Isolator system or other products may fail to gain or may lose market acceptance;

the market for the sole-therapy minimally invasive treatment of AF may fail to further develop;

the medical community may fail to further adopt our Isolator system for the sole-therapy minimally
invasive treatment of AF;

the FDA or foreign regulatory authorities may revoke the clearances or approvals they have granted for
the use of our Isolator system for the ablation of cardiac tissue and/or their other cleared uses;

the FDA or foreign regulatory authorities may refuse, delay or revoke clearances, approvals or clinical
trials of our Isolator system for the treatment of AF; and

the FDA or other domestic or foreign regulatory or enforcement authorities may be more likely than
otherwise to pursue an action against us for promoting our products for off-label uses.

The significance of each of these identified risks is discussed elsewhere under the caption “Risks Relating to

Our Business.”

Competition from existing and new products and procedures may decrease our market share and cause
our revenues to decline.

The medical device industry, including the market for the treatment of AF, is highly competitive, subject to
rapid technological change and significantly affected by new product introductions and promotional activities of
other participants. We cannot assure you that our Isolator system and other products will compete effectively
against drugs, catheter-based ablation, implantable devices, other ablation systems or other surgical AF
treatments, which may be more well-established among doctors and hospitals. Many companies are promoting
devices for the treatment of AF, and we anticipate that new or existing competitors may develop competing
products, procedures or clinical solutions. There are few barriers to prevent new entrants or existing competitors
from developing products to compete directly with ours. Some companies also compete with us to attract
qualified scientific and technical personnel as well as funding. Our primary competitors include Medtronic, Inc.,
St. Jude Medical, Inc., and ATS Medical, Inc. These companies may enjoy competitive advantages, including:

•

•

•

•

•

broader product offerings;

established and more comprehensive distribution networks;

less expensive products and procedures that take less time to perform;

greater resources, including financial resources and more extensive experience in product development,
manufacturing, regulatory clearance and approval, promotion, distribution and selling and patent
litigation; and

established relationships with hospitals, healthcare providers and payors.

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Some of our competitors are currently conducting clinical trials for the use of their products in the treatment
of AF, which if successful, may impact the future sales and demand for Isolator system and other products could
be diminished by equivalent or superior products and technologies being offered by competitors, including
products utilizing bipolar technology which could prove to be more effective, faster, safer or less costly than our
Isolator clamps. The introduction of new products, procedures, clinical solutions, or obtaining an AF approval by
competitors may result in price reductions, reduced margins or loss of market share and may render our products
obsolete, which could adversely affect our net revenues and future profitability.

Our intellectual property rights may not provide meaningful commercial protection for our products,
which could enable third parties to use our technology or methods, or very similar technology or methods,
and could reduce our ability to compete.

Our success depends significantly on our ability to protect our proprietary rights to the technologies used in

our products. We rely on patent protection, as well as a combination of copyright, trade secret and trademark
laws and nondisclosure, confidentiality and other contractual restrictions to protect our proprietary technology.
However, these legal means afford only limited protection and may not adequately protect our rights or permit us
to gain or keep any competitive advantage. Our patent applications may not issue as patents at all or in a form
that will be advantageous to us. Our issued patents and those that may be issued in the future may be challenged,
invalidated or circumvented, which could limit our ability to stop competitors from marketing related products.
Although we have taken steps to protect our intellectual property and proprietary technology, we cannot assure
you that third parties will not be able to design around our patents or, if they do infringe upon our technology,
that we will be successful in or will have sufficient resources to pursue a claim of infringement against those
third parties. We believe that third parties may have developed or are developing products that could infringe
upon our patent rights. Any pursuit of an infringement claim by us may involve substantial expense or diversion
of management attention. In addition, although we have entered into confidentiality agreements and intellectual
property assignment agreements with our employees, consultants, investigators and advisors, such agreements
may not be enforceable or may not provide meaningful protection for our trade secrets or other proprietary
information in the event of unauthorized use or disclosure or other breaches of the agreements.

Furthermore, the laws of foreign countries may not protect our intellectual property rights to the same extent

as the laws of the United States. Foreign countries generally do not allow patents to cover methods for
performing surgical procedures. If our intellectual property does not provide significant protection against
foreign or domestic competition, our competitors could compete more directly with us, which could result in a
decrease in our market share. All of these factors may harm our competitive position.

The medical device industry is characterized by patent litigation and any litigation or claim against us may
cause us to incur substantial costs, could place a significant strain on our financial resources, divert the
attention of management from our business and harm our reputation. The medical device industry is
characterized by 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 uncertain. Any patent dispute, even one without merit or an unsuccessful one, would be time-consuming
and expensive to defend and could result in the diversion of our management’s attention from our business and
result in adverse publicity, the disruption of development and marketing efforts, injury to our reputation and loss
of revenue. Any of these events could negatively affect our earnings and financial condition.

Our competitors or others may assert that our Isolator system or the methods employed in the use of our
system infringes on United States or foreign patents held by them. This risk is exacerbated by the fact that there
are numerous issued and pending patents relating to surgical ablation, the surgical treatment of AF and other
surgical devices. Because patent applications can take many years to issue, there may be applications now
pending of which we are unaware that may later result in issued patents that our Isolator system or other products

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may infringe. There could also be existing patents of which we are unaware that one or more or our products may
inadvertently infringe. As the number of competitors in the market for the treatment of AF increases, the
possibility of inadvertent patent infringement by us or a patent infringement claim against us increases.

If a third-party’s patents were upheld as valid and enforceable and we were found to be infringing, we could

be prevented from selling our Isolator system or other products unless we were able to obtain a license to use
technology or ideas covered by such patent or are able to redesign our system to avoid infringement. A license
may not be available at all or on terms acceptable to us, and we may not be able to redesign our products to avoid
any 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. If we are not successful in obtaining a license or redesigning our products, we may be
unable to sell our products and our business could suffer.

We may be subject to damages resulting from claims that we or our employees have wrongfully used or
disclosed alleged trade secrets of their former employers.

Many of our employees were previously employed at other medical device companies. Although there are

no claims currently pending against us, we may be subject to future claims that these employees, or we, have
inadvertently or otherwise used or disclosed trade secrets or other proprietary information of these former
employers. Even if we are successful in defending against these claims, litigation could result in substantial costs
and be a distraction to management. If we fail in defending such claims, in addition to paying monetary damages,
we may lose valuable intellectual property rights or personnel. A loss of key research or sales personnel or their
work product could hamper or prevent our ability to improve our products or sell our existing products, which
would harm our business.

The increase in cost of medical malpractice premiums to doctors and hospitals or the lack of malpractice
insurance coverage due to the use of our products by doctors for an off-label indication may cause certain
doctors or hospitals to decide not to use our products and may damage our ability to grow and maintain
the market for our system.

Insurance carriers have been raising premiums charged for medical malpractice insurance due, at least in

part, to increased risks associated with off-label procedures, including higher damage awards for successful
plaintiffs. Insurance carriers may continue to raise premiums or they may deny malpractice coverage for
procedures performed using products such as ours on an off-label basis. If this trend continues or worsens, our
revenue may fall as doctors or hospitals decide against purchasing our products due to the cost or unavailability
of insurance coverage.

We have a limited history of operations and a history of net losses available to common stockholders and
we may never become profitable.

We have a limited operating history and have incurred net losses each year since our inception, including
net losses available to common stockholders of $10.2 million in 2008, $11.3 million in 2007, $13.7 million in
2006, $12.7 million in 2005, $9.5 million in 2004 and $7.1 million in 2003. As of December 31, 2008, we had an
accumulated deficit of $77.5 million.

Our net losses available to common stockholders have resulted principally from costs and expenses relating

to sales and promotional efforts, research and development, seeking regulatory clearances and approvals, and
general operating expenses. We expect to continue to make substantial expenditures and to incur additional
operating losses in the future as we further develop and commercialize our products, including completing
clinical trials and seeking regulatory clearances and approvals. If sales of our products do not continue to grow as
we anticipate, we will not be able to achieve profitability. Our expansion efforts may prove more expensive than
we currently anticipate, and we may not succeed in increasing our revenues sufficiently to offset these higher

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expenses. Our losses have had, and are expected to continue to have, an adverse impact on our working capital,
total assets and stockholders’ deficit and we may never become profitable.

Our federal tax net operating loss carryforwards will be limited or lost, resulting in greater income tax
expense because we experienced an ownership change of more than 50 percentage points upon the initial
public offering of our common stock.

In connection with our initial public offering in August 2005, we experienced an ownership change as

defined by the Internal Revenue Code of 1986 that will limit the availability of our net operating loss
carryforwards to offset any future taxable income, which may increase our future income tax expense. Our
inability to use these net operating loss carryforwards to reduce taxable income is based on an ownership change
of more than 50 percentage points under rules contained in the United States Internal Revenue Code. We had
federal income tax net operating loss carryforwards of approximately $46.0 million at December 31, 2008 that, if
not utilized to reduce our taxable income, will begin to expire in 2021.

Our capital needs after the next 12 months are uncertain and we may need to raise additional funds in the
future and such funds may not be available on acceptable terms, if at all.

We believe that our current cash and cash equivalents, will be sufficient to meet our projected capital
requirements for at least the next 12 months. Our capital requirements will depend on many factors, including:

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the revenues generated by sales of our products;

the costs associated with expanding and growing our business;

the rate of progress and cost of our research and development activities;

the costs of obtaining and maintaining FDA and other regulatory clearances and approvals of, and
intellectual property protection for, our products and products in development;

the costs of the Department of Justice investigation;

the effects of competing technological and market developments; and

the number and timing of acquisitions and other strategic transactions.

As a result of these factors, we may need to raise additional funds, and we cannot be certain that such funds
will be available to us on acceptable terms, if at all. Furthermore, if we issue equity securities to raise additional
funds, our existing stockholders may experience dilution, and if we issue equity or debt securities, such securities
may have rights, preferences and privileges senior to those of our existing stockholders. In addition, if we raise
additional funds through collaboration, licensing or other similar arrangements, it may be necessary to relinquish
potentially valuable rights to our future products or proprietary technologies, or grant licenses on terms that are
not favorable to us. If we cannot raise funds on acceptable terms, we may not be able to expand our operations,
develop new products, take advantage of future opportunities or respond to competitive pressures or
unanticipated customer requirements.

If we are unable to manage the anticipated growth of our business, our future revenues and operating
results may be adversely affected and our growth could be limited.

The growth that we may experience in the future may require us to rapidly expand our personnel and
manufacturing operations. As of December 31, 2008, we had approximately 200 employees. Rapid expansion in
personnel could result in unanticipated costs and disruptions to our operations. Organizational growth could
strain our existing managerial, operational, financial and other resources. We may need to expand our current, or
implement new, financial and operating systems, which could be costly and time-consuming. For us to maintain
and expand our business successfully, we or a third party must manufacture commercial quantities of existing
and future products, in compliance with regulatory requirements, including the FDA’s Quality System
Regulation, or QSR, at an acceptable cost and on a timely basis. Our growth may strain our or a third party’s

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ability to manufacture an increasingly large variety and supply of our products. Manufacturing facilities often
experience difficulties in scaling up production, including problems with production yields and quality control
and assurance. If we cannot scale and manage our business or our manufacturing operations appropriately,
maintain control over expenses or otherwise adapt to future growth, our growth may be impaired and our future
revenues and operating results will suffer.

We depend upon single and limited source third-party suppliers, making us vulnerable to supply problems
and price fluctuations, which could harm our business.

We currently rely on single and limited source third-party vendors for the manufacture of many of the
components used in our products. For example, we rely on one vendor to manufacture our ASU and ASB, and we
have not been able to identify any alternate supplier to manufacture our ASU or ASB if our current supplier
becomes unable to do so. In addition, in some cases there are relatively few, or no, alternative sources of supply
for certain other components that are critical to our products.

Our reliance on these outside manufacturers and suppliers also subjects us to risks that could harm our

business, including:

• we may not be able to obtain adequate supply in a timely manner or on commercially reasonable terms;

• we may have difficulty locating and qualifying alternative suppliers;

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switching components may require product redesign and new submissions to the FDA which could
significantly delay production or, if the FDA refuses to approve the changes, completely eliminate our
ability to manufacture or sell our products;

our suppliers manufacture products for a range of customers, and fluctuations in demand for the
products those suppliers manufacture for others may affect their ability to deliver components to us in a
timely manner; and

our suppliers may encounter financial hardships unrelated to our demand for components, which could
inhibit their ability to fulfill our orders and meet our requirements.

Identifying and qualifying additional or replacement suppliers for any of the components used in our
products, if required, may not be accomplished quickly or at all and could involve significant additional costs.
Any interruption or delay in the supply of components or materials, or our inability to obtain components or
materials from alternate sources at acceptable prices in a timely manner, could impair our ability to meet the
demand of our customers and cause them to cancel orders or switch to competitive products, and could therefore
have a material adverse effect on our business, financial condition and results of operations. In addition, the
worldwide economic crisis may adversely impact our suppliers’ ability to provide us with materials and
components, which could adversely affect our business and operating results.

If the value of our goodwill becomes impaired, it could materially reduce the value of our assets and
reduce our net income for the year in which the write-off occurs.

As of December 31, 2008, we had $6.8 million in goodwill recorded, which represents the excess purchase

price we paid for the purchase of Enable and the Frigitronics product line in excess of the fair value of the net
assets we acquired. We recorded $3.9 million in goodwill related to our acquisition of Enable and $2.9 million
related to our acquisition of the Frigitronics® product line. The Financial Accounting Standards Board’s
(“FASB”) Statement of Financial Accounting Standards (“SFAS”) No. 142, “Goodwill and Other Intangible
Assets,” requires that goodwill be tested at least annually (absent any impairment indicators). The testing
includes comparing the fair value of each reporting unit with its carrying value. Fair value is determined using
discounted cash flows, market multiples and market capitalization. Impairment adjustments, if any, are required
to be recognized as operating expenses. We may have future impairment adjustments to our recorded goodwill.
We performed an impairment test of our goodwill as of November 30, 2008 and concluded no impairment
existed. Any finding that the value of our goodwill has been impaired would require us to write-off the impaired

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portion, which could materially reduce the value of our assets and reduce our net income for the year in which
the write-off occurs. During the first quarter of 2009, our net book value at times has exceeded our market
capitalization, which is an indication that an impairment may exist. Consequently, we expect to perform a
goodwill impairment analysis during the first quarter of 2009, which could result in the recording of a goodwill
impairment of up to $6.8 million.

An inability to forecast future revenues or estimate life cycles of products may result in inventory-related
charges that would negatively affect our gross margins and results of operations.

To mitigate the risk of supply interruptions, we may determine to maintain excess inventory of our products
or component parts. Managing our inventory levels is important to our cash position and results of operations. As
we grow and expand our product offerings, managing our inventory levels becomes more difficult, particularly as
we expand into new product areas and bring product enhancements to market. An excessive amount of inventory
reduces our cash available for operations and may result in excess or obsolete materials. Conversely, inadequate
inventory levels may make it difficult for us to meet customer product demand, resulting in decreased revenues.
An inability to forecast future revenues or estimated life cycles of products may result in inventory-related
charges that would negatively affect our gross margins and results of operations.

If we or our third party vendors fail to comply with extensive FDA regulations relating to the
manufacturing of our products or any component part, we may be subject to fines, injunctions and
penalties, and our ability to commercially distribute and sell our products may be hurt.

Our manufacturing facility and the manufacturing facility of any of our third-party component

manufacturers, critical suppliers or third-party sterilization facility are required to comply with the FDA’s quality
systems regulations, or QSR, which sets forth minimum standards for the procedures, execution and
documentation of the design, testing, production, control, quality assurance, labeling, packaging, sterilization,
storage and shipping of our Isolator® system and other products that we sell. The FDA may enforce its QSR,
among other ways, through periodic unannounced inspections. If our manufacturing facility or the manufacturing
facility of any of our third-party component manufacturers, critical suppliers or third-party sterilization facility,
fails a QSR inspection, our and their operations could be disrupted, and manufacturing interrupted. Failure to
take adequate and timely corrective action in response to an adverse QSR inspection could force a shutdown of
our manufacturing operations or a recall of our products. Adverse QSR inspections could delay FDA approval of
our products and could have an adverse effect on our production, sales and profitability. We and any of our third
party vendors may also encounter other problems during manufacturing including failure to follow specific
protocols and procedures, equipment malfunction and environmental factors, any of which could delay or impede
our ability to meet demand. The manufacture of our product also subjects us to risks that could harm our
business, including problems relating to the sterilization of our products or facilities and errors in manufacturing
components that could negatively affect the efficacy or safety of our products or cause delays in shipment of our
products. Any interruption or delay in the manufacture of the product or any of its components could impair our
ability to meet the demand of our customers and cause them to cancel orders or switch to competitive products,
and could therefore have a material adverse effect on our business, financial condition and results of operations.

If we fail to comply with the extensive FDA regulations relating to our business, we may be subject to fines,
injunctions and penalties and our ability to commercially distribute and promote our products may be
hurt.

Our products are classified by the FDA as medical devices and as such are subject to extensive regulation in

the United States by the FDA and numerous other federal, state and foreign governmental authorities. FDA
regulations, guidance, notices and other issuances specific to medical devices are broad and regulate, among
other things:

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product design, development, manufacturing and labeling;

product testing, including electrical testing, transportation testing and sterility testing;

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pre-clinical laboratory and animal testing;

clinical trials in humans;

product safety, effectiveness and quality;

product manufacturing, storage and distribution;

premarket clearance or approval;

record keeping and document retention procedures;

product advertising, sales and promotion;

post-market surveillance and medical device reporting of events where our device caused or contributed
to a death or other serious injury, or malfunctioned in such a way that if it were to recur would likely
cause or contribute to a death or serious injury;

product corrective actions, removals and recalls; and

product import and export.

Compliance with FDA, state and other regulations can be complex, expensive and time-consuming. The
FDA and other authorities have broad enforcement powers. Furthermore, changes in the applicable governmental
regulations could prevent further commercialization of our products and technologies and could materially harm
our business.

If a serious failure to comply with applicable regulatory requirements were determined, it could result in

enforcement action by the FDA or other state or Federal agencies, including the Federal Department of Justice,
which may include any of the following sanctions:

• warning letters, fines, injunctions, consent decrees and civil penalties;

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repair, replacement, refunds, recall or seizure of our products;

operating restrictions, partial suspension or total shutdown of production;

refusing or delaying our pending requests for 510(k) clearance or PMAs, new intended uses or
modifications to existing products;

• withdrawing 510(k) clearance or PMAs that have already been granted; and

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criminal prosecution.

If any of these events were to occur, we could lose customers, and our production, product sales, business,

results of operations and financial condition would be harmed.

We are also subject to medical device reporting regulations that require us to file reports with the FDA if
our products reasonably are the cause of or contribute to an adverse event, death, serious injury or in the event of
product malfunction that if it were to recur would likely cause or contribute to a death or serious injury. We have
a history of submitting medical device reports to the FDA involving our products, including patient deaths, which
were categorized as outcomes based on physician judgment, not on the failure of our devices. There have also
been other incidents, including patient deaths, which have occurred during procedures using our products that we
have not, and believe were not required to be, reported to the FDA because we and our physician consultants
determined that our products did not cause or contribute to the outcomes in these incidents. If the FDA disagrees
with us, however, and determines that we should have submitted reports for these adverse events, we could be
subject to significant regulatory fines or other penalties. In addition, the number of medical device reports we
make, or the magnitude of the problems reported, could cause the FDA or us to terminate or modify our clinical
trials or recall or cease the sale of our products, and could hurt commercial acceptance of our products.

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Modifications to our products may require new clearances or approvals or require us to cease promoting
or to recall the modified products until such clearance or approvals are obtained.

Any modification to a 510(k)-cleared device that would constitute a change in its intended use, design or
manufacture, could require a new 510(k) clearance or, possibly, submission and FDA approval of a PMA. The
FDA requires every medical device company to make the determination as to whether a new 510(k) is to be filed,
but the FDA may review any medical device company’s decision. We have previously made modifications to our
Isolator system and other products but do not believe such modifications required us to submit an additional
510(k) clearance. The FDA may not agree with our decisions regarding whether new clearances or approvals
were required. If the FDA disagrees with us and requires us to submit a new 510(k) or PMA for then-existing
modifications, we may be required to cease promoting or to recall the modified product until we obtain clearance
or approval. In addition, we could be subject to significant regulatory fines or other penalties. Furthermore, our
products could be subject to recall if the FDA determines, for any reason, that our products are not safe or
effective or that appropriate regulatory submissions were not made. Delays in receipt or failure to receive
clearances or approvals, the loss of previously received clearances or approvals, or the failure to comply with
existing or future regulatory requirements, could reduce our sales, profitability and future growth prospects.

We will spend considerable time and money complying with federal, state and foreign regulations in
addition to FDA regulations, and, if we are unable to fully comply with such regulations, we could face
substantial penalties.

We are subject to extensive regulation by the federal government and the states and foreign countries in
which we conduct our business. The laws that affect our ability to operate our business in addition to the Federal
Food, Drug, and Cosmetic Act and FDA regulations include, but are not limited to, the following:

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state food and drug laws, including laws regulating the manufacture, promotion and distribution of
medical devices;

state consumer protection, fraud and business practice laws;

the Federal Anti-Kickback Statute, which prohibits persons from knowingly and willfully soliciting,
offering, receiving or providing remuneration, directly or indirectly, in cash or in kind, to induce either
the referral of an individual, or furnishing or arranging for a good or service, for which payment may be
made under federal healthcare programs such as the Medicare and Medicaid Programs;

the Federal False Claims Act, which prohibits submitting a false claim or causing of the submission of a
false claim to the government;

• Medicare laws and regulations that prescribe the requirements for coverage and payment, including the
amount of such payment, and laws prohibiting false claims for reimbursement under Medicare and
Medicaid;

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the federal doctor self-referral prohibition, commonly known as the Stark Law, which, in the absence of
a statutory or regulatory exception, prohibits the referral of Medicare patients by a doctor to an entity for
the provision of certain designated healthcare services including inpatient and outpatient hospital
services, if the doctor or a member of the doctor’s immediate family has a direct or indirect financial
relationship, including an ownership interest in, or a compensation arrangement with, the entity and also
prohibits that entity from submitting a bill to a federal payor for services rendered pursuant to a
prohibited referral;

state laws that prohibit the practice of medicine by non-doctors and by doctors not licensed in a
particular state, and fee-splitting arrangements between doctors and non-doctors, as well as state law
equivalents to the Anti-Kickback Statute and the Stark Law, which may not be limited to government-
reimbursed items;

Federal and State healthcare fraud and abuse laws or laws protecting the privacy of patient medical
information, including the Health Insurance Portability and Accountability Act, or HIPAA;

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the Federal Trade Commission Act and similar laws regulating advertising and consumer protection;
and

similar and other regulations outside the United States.

Certain federal and state laws regarding Medicare, Medicaid and physician self-referrals are broad and we

may be required to change one or more of our practices to be in compliance with these laws. Healthcare fraud
and abuse regulations are complex and even minor, inadvertent irregularities in submissions can potentially give
rise to claims that a statute has been violated. Any violations of these laws could result in a material adverse
effect on our business, financial condition and results of operations. For example, if we were found to be in
violation of the Federal False Claims Act, we would likely face significant fines and penalties and would likely
be required to change substantially our sales, promotion, grant and educational activities. There is also a
possibility that we could face an injunction that would prohibit in whole or in part our current business activities,
and, as a result of enforcement actions against us or our senior officers, we could be excluded from participation
in government healthcare programs such as Medicare and Medicaid. If there is a change in law, regulation or
administrative or judicial interpretations, we may have to change our business practices or our existing business
practices could be challenged as unlawful, which could have a material adverse effect on our business, financial
condition and results of operations. As described above, the DOJ is currently conducting an investigation of our
marketing and promotional practices.

If our past or present operations are found to be in violation of any of the laws described above or the other

governmental regulations to which we, our distributors or our customers are subject, we may be subject to the
applicable penalty associated with the violation, including civil and criminal penalties, damages, fines, exclusion
from the Medicare and Medicaid and other government programs and the curtailment or restructuring of our
operations. If we are required to obtain permits or licensure under these laws that we do not already possess, we
may become subject to substantial additional regulation or incur significant expense. Any penalties, damages,
fines, curtailment or restructuring of our operations would adversely affect our ability to operate our business and
our financial results. The risk of our being found in violation of these laws is increased by the fact that many of
them have not been fully or clearly interpreted by the regulatory authorities or the courts, and their provisions are
subject to a variety of interpretations and additional legal or regulatory change. Any action against us for
violation of these laws, even if we successfully defend against it, could cause us to incur significant legal
expenses, divert our management’s attention from the operation of our business and damage our reputation.

If doctors or hospitals were to receive inadequate levels of reimbursement for surgical AF treatments
using our Isolator system and other products from governmental or other third-party payors, it could
affect the adoption or use of our products and may cause our revenues to decline.

Widespread adoption or use of our Isolator system and related products by the medical community is
unlikely to occur if doctors and hospitals do not receive sufficient reimbursement from payors for surgical
treatment of AF using our products. Currently, hospitals do not receive any additional reimbursement from the
fee-for-service Medicare program, which is administered by CMS, for the cost of AF treatment, or for the cost of
our Isolator system and related products, as part of an open-heart procedure. However, doctors performing AF
treatment during an open-heart surgical procedure are eligible to receive separate reimbursement for performing
these AF treatments. Sole-therapy minimally invasive AF treatment does qualify for reimbursement from the
fee-for-service Medicare program allowing both doctors and hospitals to receive reimbursement for this type of
AF treatment. In addition, the Medicare program has already adopted specific hospital inpatient treatment codes
describing AF treatment by ablation in sole-therapy minimally invasive procedures such as that provided through
the use of our Isolator system and related products.

Many private payors look to CMS as a guideline in setting their reimbursement policies and amounts. If

CMS or other agencies decrease or limit reimbursement payments for doctors and hospitals, this may affect
coverage and reimbursement determinations by many private payors. Additionally, some private payors do not
follow the Medicare guidelines and those payors may reimburse only a portion of the cost of AF treatment or not

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at all. Furthermore, for some governmental payors, such as the Medicaid program, reimbursement differs from
state to state, and some state Medicaid programs may not reimburse for our procedure in an adequate amount, if
at all.

We are unable to predict all changes to the coverage or reimbursement methodologies that will be employed
by private or governmental third-party payors. We cannot be certain that under prospective payment systems and
applicable fee schedules, such as those used by CMS and by many private healthcare payors, the cost of the
procedures utilizing our products will be adequately reimbursed or that it will receive reimbursement consistent
with historical levels or at all. Any denial of private or governmental third-party payor coverage or inadequate
reimbursement for procedures performed using our products could harm our business and reduce our revenues.

Adverse changes in payors’ policies toward coverage and reimbursement for surgical AF treatment would
harm our ability to promote and sell our Isolator® system and other products.

Third-party payors are increasingly exerting pressure on medical device companies to reduce their prices.

Even to the extent that the treatment of AF using our Isolator system and related products is reimbursed by
private payors and governmental payors, adverse changes in payors’ policies toward coverage and
reimbursement for surgical AF treatment would also harm our ability to promote and sell our products. Payors
continue to review their policies and can, without notice, deny coverage for treatments that include the use of our
products. Because each third-party payor individually approves coverage and reimbursement, obtaining these
approvals may be time-consuming and costly. In addition, third-party payors may require us to provide scientific
and clinical support for the use of our products. Alternatively, government or private payors may deem the
treatment of AF utilizing our products experimental or not medically necessary and, as such, not provide
coverage. Adverse changes in coverage and reimbursement for surgical AF treatment could harm our business
and reduce our revenues.

We have limited long-term clinical data regarding the safety and efficacy of our Isolator system and other
products. Any long-term data that is generated may not be positive or consistent with our limited short-
term data, which would affect the rate at which our products are adopted by the medical community.

Our success depends upon the increasing acceptance of our products by the medical community as safe and

effective in the treatment of AF. Serious complications, including death, have been encountered in connection
with the surgical treatment of AF, including in connection with procedures in which our Isolator system and
other products were used. Important factors upon which the efficacy of our Isolator system and related products
will be measured include long-term data on the number of patients that continue to experience AF following
treatment with our products and the number of patients that have serious complications resulting from AF
treatment using our products. Our clinical trials may produce limited data regarding the efficacy of our Isolator
system for the treatment of AF, or may identify unexpected safety issues. We cannot provide any assurance that
the data collected during our clinical trials will be compelling to the medical community or to the FDA, because
it may not be scientifically meaningful and may not demonstrate that procedures utilizing our products are an
attractive procedure when compared against data from alternative procedures and products. In addition, the long-
term effects of ablation system procedures are not known.

The results of short-term clinical experience of our Isolator system and related products do not necessarily

predict long-term clinical benefit. If the long-term clinical trial results are not as positive as the short-term results
or the long-term results do not otherwise meet doctors’ expectations, the FDA may not approve our Isolator
system or other products for the treatment of AF, our products may not become widely adopted, and doctors may
recommend alternative treatments for their patients. Another significant factor is acute safety data on
complications that occur during the surgical treatment of AF.

If the results obtained from our clinical studies or clinical or commercial experience indicate that our
Isolator system and other products are not safe or effective, or not as safe or effective as other treatment options

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or than current short-term data would suggest, the FDA may not approve our Isolator system or other products
for the treatment of AF, adoption of the use of our products for the treatment of AF may suffer and our business
would be harmed.

Even if we believe the data collected from clinical studies or clinical experience indicates positive results,

each doctor’s actual experience with our Isolator system and other products may vary. Clinical studies conducted
with our products have involved procedures performed by doctors who are technically proficient. Consequently,
both short- and long-term results reported in these studies may be significantly more favorable than typical
results of practicing doctors, which could negatively impact the rate of adoption of our products.

We sell our products outside of the United States and we are subject to various regulatory and other risks
relating to international operations, which could harm our international revenues and profitability.

Doing business outside of the United States exposes us to risks distinct from those we face in our domestic
operations. For example, our operations outside of the United States are subject to different regulatory laws and
requirements in each jurisdiction where we operate or have sales. Our or our distributors’ failure to comply with
current or future foreign regulatory requirements, or the assertion by foreign authorities that we or they have
failed to comply, could result in adverse consequences, including enforcement actions, fines and penalties,
recalls, cessation of sales, civil and criminal prosecution, and the consequences could be disproportionate to the
relative contribution of our international operations to our results of operations. Moreover, if political or
economic conditions deteriorate in these countries, our ability to conduct our international operations could be
limited and the costs could be increased, which could negatively affect our operating results. Engaging in
business outside of the United States inherently involves a number of other difficulties and risks, including:

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export restrictions and controls relating to technology;

pricing pressure that we may experience internationally;

difficulties in enforcing agreements and collecting receivables through certain foreign legal systems;

political and economic instability;

potentially adverse tax consequences, tariffs and other trade barriers;

the need to hire additional personnel to promote our Isolator® system outside of the United States;

international terrorism and anti-American sentiment;

fluctuations in exchange rates for future sales denominated in foreign currency, which represent a
majority of our sales outside of the United States; and

difficulty in obtaining and enforcing intellectual property rights.

Our exposure to each of these risks may increase our costs and require significant management attention.

We cannot assure you that one or more of these factors will not harm our business.

We primarily rely on independent distributors to market and sell our products outside of the United
States, and a failure of our independent distributors to market our products in these markets successfully
may adversely impact our sales .

We primarily depend on third-party distributors to sell our Isolator system and other products outside of the

United States, and if these distributors do not perform, we may be unable to increase or maintain our level of
international revenues. Over the long term, we intend to continue to grow our business outside of the United
States, and to do so we will need to attract additional distributors or hire direct sales personnel to expand the
territories in which we sell our products. Independent distributors may terminate their relationship with us or
devote insufficient sales efforts to our products. We are not able to control our independent distributors, and they
may not be successful in implementing our marketing plans. In addition, many of our independent distributors

41

outside of the United States initially obtain and maintain foreign regulatory approval for sale of our products in
their respective countries. Our failure to maintain our relationships with our independent distributors outside of
the United States, or our failure to recruit and retain additional skilled independent distributors in these locations,
could have an adverse effect on our operations. Turnover among our independent distributors, even if replaced,
may adversely affect our short-term financial results while we transition to new independent distributors.
Fluctuations in foreign currency exchange rates, including in particular any strengthening of the U.S. dollar may
cause our independent sales distributors to seek longer payment terms to offset the higher prices they are paying
in local currency for our products. In addition, in light of the worldwide economic crisis, the ability of our
distributors to borrow money from their existing lenders or to obtain credit from other sources to purchase our
products may be impaired or our distributors could experience a significant change in their liquidity or financial
condition, all of which could impair their ability to distribute our products and eventually lead to distributor
turnover.

If coverage and adequate levels of reimbursement from governmental and third-party payors outside of
the United States are not attained and maintained, sales of our Isolator system and other products outside
of the United States may decrease and we may fail to achieve or maintain significant sales outside of the
United States.

Our revenues generated from sales outside of the United States are also dependent upon the availability of

coverage and reimbursement within prevailing foreign healthcare payment systems. In general, foreign
healthcare payors do not provide reimbursement for sole-therapy minimally invasive procedures utilizing
ablation devices such as our Isolator system. In addition, healthcare cost containment efforts similar to those we
face in the United States are prevalent in many of the other countries in which we sell our Isolator system, and
these efforts are expected to continue. To the extent that use of an ablation device such as our Isolator clamps
have historically received reimbursement under a foreign healthcare payment system, if any, such reimbursement
has typically been significantly less than the reimbursement provided in the United States. If coverage and
adequate levels of reimbursement from governmental and third-party payors outside of the United States are not
attained and maintained, sales of our Isolator system and other products outside of the United States may
decrease and we may fail to achieve or maintain significant sales outside of the United States.

If we choose to acquire new and complementary businesses, products or technologies, we may be unable to
complete these acquisitions or to successfully integrate them in a cost-effective and non-disruptive manner.

Our success depends on our ability to continually enhance and broaden our product offerings in response to
changing customer demands, competitive pressures and technologies. Accordingly, we may in the future pursue
the acquisition of, or joint ventures relating to, complementary businesses, products or technologies instead of
developing them ourselves. We do not know if we will be able to successfully complete any acquisitions or joint
ventures, or future acquisitions or joint ventures, or whether we will be able to successfully integrate any
acquired business, product or technology or retain any key employees. Integrating any business, product or
technology we acquire could be expensive and time-consuming, disrupt our ongoing business and distract our
management. If we are unable to integrate any acquired businesses, products or technologies effectively, our
business will suffer. In addition, any amortization or charges resulting from the costs of acquisitions could
increase our expenses.

The outcome of litigation in which we have been named as a defendant, including two class action
shareholder lawsuits, is unpredictable and an adverse decision in any such matter could have a material
adverse affect on our financial position and results of operations.

We, along with certain of our current and former officers, are named defendants in two purported securities
class action lawsuits. One was filed in 2006 in the United States District Court for the Southern District of New
York and the other was filed in 2008 in the United States District Court for the Southern District of Ohio,
Western Division. In the first case, the plaintiffs allege violations of the federal securities laws and seek damages

42

on behalf of purchasers of our common stock during the period from our initial public offering in August 2005
through February 2006. In the second case, the plaintiffs allege violations of the federal securities laws and seek
damages on behalf of purchasers of our common stock from May 2006 through October 2008. These proceedings
have resulted, and are expected to continue to result, in a diversion of management’s attention and resources and
in significant professional fees. These professional fees have increased, and in the near term may continue to
increase our cash needs.

We have certain obligations to indemnify our officers and directors and to advance expenses to such officers

and directors. Although we have purchased liability insurance for our directors and officers, if our insurance
carriers should deny coverage for all or a portion of the amount to be paid, or if the indemnification costs exceed
the insurance coverage, we may be forced to bear some or all of these indemnification costs directly, which could
be substantial and may have an adverse effect on our business, financial condition, results of operations and cash
flows. If the cost of our liability insurance increases significantly, or if this insurance becomes unavailable, we
may not be able to maintain or increase our levels of insurance coverage for our directors and officers, which
could make it difficult to attract or retain qualified directors and officers.

We are not able to estimate the amount of any damages that may arise from these legal proceedings and the

internal efforts associated with defending ourselves and current or former officers. If we are unsuccessful in
defending ourselves, these lawsuits could adversely affect our business, financial condition, results of operations
and cash flows as a result of the damages that we would be required to pay. It is possible that our insurance
policies either may not cover potential claims of this type or may not be adequate to indemnify us for all liability
that may be imposed. While we believe that the allegations and claims made in these lawsuits are wholly without
merit and intend to defend these actions vigorously, we cannot be certain that we will be successful in any or all
of these actions.

An adverse resolution of any lawsuits could have a material adverse affect on our financial position and

results of operations. Concerns with respect to the circumstances surrounding our pending litigation may have
created uncertainty regarding our ability to focus on our business operations and remain competitive with other
companies in our industry.

We depend on our officers and other skilled and experienced personnel to operate our business effectively.
If we are not able to retain our current employees or recruit additional qualified personnel, our business
will suffer and our future revenue and profitability will be impaired.

We are highly dependent on the skills and experience of our President and Chief Executive Officer,

David J. Drachman, and other employees. We do not have any insurance in the event of the death or disability of
our key personnel other than Mr. Drachman. Our officers and key employees, with the exception of our CEO and
CFO, do not have employment agreements and they may terminate their employment and work elsewhere
without notice and without cause or good reason. Currently we have non-compete agreements with our officers
and other employees. Due to the specialized knowledge that each of our officers possesses with respect to our
products, including our Isolator system and our operations and the limited pool of people with relevant
experience in the medical device field, the loss of service of one or more of these individuals could significantly
affect our ability to operate and manage our business. The announcement of the loss of one or more of our key
personnel could negatively affect our stock price.

We depend on our scientific and technical personnel for successful product development and innovation,
which are critical to the success of our business. In addition, to succeed in the implementation of our business
strategy, our management team must rapidly execute our sales strategy, obtain expanded FDA clearances and
approvals, achieve market acceptance for our Isolator system and other products and further develop products,
while managing anticipated growth by implementing effective planning, manufacturing and operating processes.
Managing this growth will require us to attract and retain additional management and technical personnel. Our
offices are located in West Chester, Ohio where it is difficult to attract and retain employees with experience in
the medical device industry. We rely primarily on direct sales employees to sell our products in the United States

43

and failure to adequately train them in the use and benefits of our products will prevent us from achieving our
market share and revenue growth goals. We have key relationships with doctors that involve procedure, product,
market and clinical development. If any of these doctors end their relationship with us, our business could be
negatively impacted. We cannot assure you that we will be able to attract and retain the personnel and doctor
relationships necessary to grow and expand our business and operations. If we fail to identify, attract, retain and
motivate these highly skilled personnel and doctors, we may be unable to continue our development and sales
activities.

Compliance with environmental laws and regulations may be expensive. Failure to comply with
environmental laws and regulations could subject us to significant liability.

Our manufacturing operations and research and development activities involve the use of biological

materials and hazardous substances and are subject to a variety of federal, state and local environmental laws and
regulations relating to the storage, use, discharge, disposal, remediation of, and human exposure to, hazardous
substances. Our research and development and manufacturing operations may produce biological waste
materials, such as animal tissues, and certain chemical waste. These operations are permitted by regulatory
authorities, and the resultant waste materials are disposed of in material compliance with environmental laws and
regulations. Compliance with these laws and regulations may be expensive and non-compliance could result in
substantial liabilities. In addition, we cannot completely eliminate the risk of accidental contamination or injury
to third parties from the use, storage, handling or disposal of these materials. In the event of contamination or
injury, we could be held liable for any resulting damages, and any liability could exceed any applicable insurance
coverage we may have. In addition, our manufacturing operations may result in the release, discharge, emission
or disposal of hazardous substances that could cause us to incur substantial liabilities, including costs for
investigation and remediation.

Risks Relating To Our Common Stock

The price and trading volume of our common stock may experience extreme fluctuations and you could
lose some or all of your investment.

Because we operate within the medical device segment of the healthcare industry, our stock price is likely to

be volatile. The market price of our common stock may and has had a history of substantial fluctuation due to a
variety of factors, including:

•

•

•

•

•

•

doctor and patient acceptance of the surgical treatment of AF using our Isolator system and other
products;

adverse regulatory developments with respect to our products, such as recalls, new regulatory
requirements, changes in regulatory requirements or guidance and timing of regulatory clearances and
approvals for new products;

coverage and reimbursement determinations for our products and the related procedures;

the timing of orders received;

delays or interruptions in manufacturing or shipping of our products;

pricing of our products;

• media reports and publications and announcements about products or new innovations that could

compete with our products or about the medical device product segment in general;

•

investigations, claims or allegations by regulatory agencies, such as the Department of Justice;

• market conditions or trends related to the medical device and healthcare industries or the market in

general;

•

additions to or departures of our key personnel;

44

•

•

•

•

•

•

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

changes in financial estimates, investors’ perceptions or recommendations by securities analysts;

variations in our quarterly financial and operating results;

failure to achieve or maintain an effective healthcare compliance environment;

changes in accounting principles; and

failure to achieve and maintain an effective internal control environment.

These factors, some of which are not within our control, may cause the price of our stock to fluctuate

substantially. If our quarterly or annual operating results fail to meet or exceed the expectations of securities
analysts or investors, our stock price could drop suddenly and significantly. We believe the quarterly and annual
comparisons of our financial results are not necessarily meaningful and should not be relied upon as an indication
of our future performance.

The market prices of the securities of medical device companies, particularly companies like ours without

consistent product revenues and earnings, have been highly volatile and are likely to remain highly volatile in the
future. This volatility has often been unrelated to the operating performance of particular companies. These
market prices generally are not sustainable and are highly volatile. In the past, companies that experience
volatility in the market price of their securities have often faced securities class action litigation. Whether or not
meritorious, litigation brought against us could result in substantial costs, divert our management’s attention and
resources and harm our ability to grow our business.

If our common stock does not continue to be traded on an established exchange, an active trading market
may not develop and the trading price of our common stock may decline.

Our common stock is listed on The NASDAQ Global Market. In order to maintain that listing, we are

required to satisfy minimum financial and continued listing requirements, including, without limitation,
maintaining a $1.00 per share minimum closing bid price for our common stock. In response to current market
conditions, NASDAQ has temporarily suspended the enforcement rules requiring the minimum $1.00 closing bid
price through April 19, 2009. While the bid price of our common stock has never been below $1.00, the market
price of our common stock has been as low as $1.15 per share during 2009.

If the closing bid price of our common stock is below $1.00 for 30 consecutive business days after April 19,
2009, we could receive notice from NASDAQ stating that the minimum bid price for our common stock is below
continuing listing standards. If our common stock were threatened with delisting from The NASDAQ Global
Market, we may, depending on the circumstances, seek to extend the period for regaining compliance with
NASDAQ listing requirements by moving our common stock to The NASDAQ Capital Market, or we may
pursue other strategic alternatives to meet the continuing listing standards.

If our common stock is delisted by NASDAQ, our common stock may be eligible to trade on the NYSE

Alternext U.S., the OTC Bulletin Board or the Pink OTC Markets. In such an event, it could become more
difficult to dispose of, or obtain accurate quotations for the price of our common stock and there would likely
also be a reduction in our coverage by security analysts and the news media, which could cause the price of our
common stock to decline further.

Our insiders and other significant stockholders own a large percentage of our outstanding common stock,
and the future sale of our common stock could negatively affect our stock price.

We had approximately 14.3 million shares of common stock outstanding as of February 28, 2009. Also, as

of February 28, 2009, our executive officers, directors and principal stockholders, and entities affiliated with
them, beneficially owned in the aggregate approximately 30% of our common stock. If our common stockholders

45

sell substantial amounts of our common stock in the public market, or the market perceives that such sales may
occur, the market price of our common stock could fall. In addition, the holders of up to 3.9 million shares of our
common stock 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.
Furthermore, 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 insiders and other significant stockholders own a large percentage of our outstanding common stock,
and because their interests may differ from yours, they may prevent us from taking actions which may be
favorable to you.

As of December 31, 2008, our executive officers, directors and principal stockholders, and entities affiliated

with them, beneficially owned in the aggregate approximately 30% of our common stock. This concentration of
ownership may adversely affect the trading price of our common stock because of perceived disadvantages in
owning stock in a company with significant stockholders. These stockholders could have a substantial influence
over the determination of the management of our business and affairs. This concentration of ownership could
have the effect of delaying, deferring or preventing a change in control of us or impeding a merger or
consolidation, takeover or other business combination that could be favorable to you.

Sales of common stock by us in a capital raising transaction may dilute your ownership of common stock
and cause a decline in the market price of our common stock.

We may need to raise capital in the future to fund our operations. If we raise funds by issuing equity
securities, our stock price may decline and our existing shareholders may experience significant dilution.
Furthermore, we may enter into financing transactions at prices that represent a substantial discount to market
price. A negative reaction by investors and securities analysts to any sale of our equity securities could result in a
decline in the trading price of our common stock.

Anti-takeover provisions in our amended and restated certificate of incorporation and amended and
restated bylaws and under Delaware law could inhibit a change in control or a change in management that
you consider favorable.

Provisions in our certificate of incorporation and bylaws could delay or prevent a change of control or
change in management that would provide you with a premium to the market price of your common stock. These
provisions include those:

•

•

•

•

•

•

authorizing the issuance without further approval of “blank check” preferred stock that could be issued
by our board of directors to increase the number of outstanding shares and thwart a takeover attempt;

prohibiting cumulative voting in the election of directors, which would otherwise allow less than a
majority of stockholders to elect director candidates;

limiting the ability to remove directors;

limiting the ability of stockholders to call special meetings of stockholders;

prohibiting stockholder action by written consent, thereby requiring all stockholder actions to be taken
at a meeting of stockholders; and

establishing advance notice requirements for nominations for election to the board of directors or for
proposing matters that can be acted upon by stockholders at stockholder meetings.

In addition, Section 203 of the Delaware General Corporation Law limits business combination transactions
with 15% stockholders that have not been approved by our board of directors. These provisions and others could
make it difficult for a third party to acquire us, or for members of our board of directors to be replaced, even if

46

doing so would be beneficial to our stockholders. Because our board of directors is responsible for appointing the
members of our management team, these provisions could in turn affect any attempt to replace the current
management team. If a change of control or change in management is delayed or prevented, you may lose an
opportunity to realize a premium on your shares of common stock or the market price of our common stock
could decline.

We do not expect to pay dividends in the foreseeable future. As a result, you must rely on stock
appreciation for any return on your investment.

We do not anticipate paying cash dividends on our common stock in the foreseeable future. Any payment of

cash dividends will also depend on our financial condition, results of operations, capital requirements and other
factors and will be at the discretion of our board of directors. Accordingly, you will have to rely on capital
appreciation, if any, to earn a return on your investment in our common stock. Furthermore, pursuant to our
credit facility, we are currently subject to restrictions on our ability to pay dividends and we may in the future
become subject to other contractual restrictions on, or prohibitions against, the payment of dividends.

The requirements of being a public company may strain our resources and distract management.

As a public company, we are subject to the reporting requirements of the Securities Exchange Act of 1934,

as amended, or the Exchange Act, and the Sarbanes-Oxley Act of 2002, or the Sarbanes-Oxley Act. These
requirements may place a strain on our systems and resources. The Exchange Act requires that we file annual,
quarterly and current reports with respect to our business and financial condition. The Sarbanes-Oxley Act
requires that we maintain effective disclosure controls and procedures and internal controls over financial
reporting. In order to maintain and improve the effectiveness of our disclosure controls and procedures and
internal control over financial reporting, significant resources and management oversight will be required. This
may divert management’s attention from other business concerns, which could have a material adverse effect on
our business, financial condition, results of operations and cash flows.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

We maintain our headquarters in West Chester, Ohio in a facility of approximately 12,200 square feet,
which contains primarily office space. We currently pay monthly rent of approximately $12,000 and the lease for
this facility expires in May 2009. In addition, we have six separate leases for a total of approximately 35,000
square feet of office, production and warehouse space in West Chester, Ohio, with an aggregate monthly rent of
approximately $25,000 and three of the leases for these facilities expire in 2010 and the other three are renewable
annually. We believe that our existing facilities are adequate to meet our immediate needs and that suitable
additional space will be available in the future on commercially reasonable terms as needed.

ITEM 3. LEGAL PROCEEDINGS

We are not party to any material pending or threatened litigation, except as described below:

Class Action Lawsuits

On December 12, 2008, a putative class action lawsuit captioned Halford vs. AtriCure, Inc., et al., was filed
in the U.S. District Court for the Southern District of Ohio, Western Division. The plaintiff alleges violations of
Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder and
seeks unspecified damages against the Company and certain of its current executive officers. The plaintiff
alleges, among other things, that the defendants issued materially false and misleading statements that we failed

47

to disclose that we improperly promoted certain products to physicians and improperly caused the filing of false
claims for reimbursement. The class period alleged runs from May 10, 2007 through October 31, 2008. We
intend to vigorously defend this lawsuit.

We and certain of our current and former officers were named as defendants in a purported securities class

action lawsuit filed in the United States District Court for the Southern District of New York (Levine v. AtriCure,
Inc., Case No. 06 CV 14324 (United States District Court for the Southern District of New York)). The suit
alleges violations of the federal securities laws and seeks damages on behalf of purchasers of our common stock
during the period from our Initial Public Offering in August 2005 through February 16, 2006. We believe that the
allegations are without merit and intend to vigorously defend against them. Our motion to dismiss the lawsuit for
lack of subject matter jurisdiction was denied in September 2007 and a motion for reconsideration of that denial
was denied in January 2009. We intend to vigorously defend this lawsuit.

Department of Justice Investigation

We received a letter on October 27, 2008 from the U.S. Department of Justice-Civil Division (the “DOJ”)

informing us that the DOJ was conducting an investigation for potential False Claims Act and common law
violations relating to our surgical ablation devices. Specifically, the letter states that the DOJ is investigating the
Company’s marketing practices utilized in connection with its surgical ablation system to treat atrial fibrillation,
a specific use outside the Federal Food and Drug Administration’s 510(k) clearance. The letter also states that the
DOJ is investigating whether AtriCure instructed hospitals to bill Medicare for surgical ablation using incorrect
billing codes. On November 3, 2008, we received a letter from the DOJ outlining a document request and we
have substantially complied with the request. We are cooperating with the investigation and continue to operate
our business in the ordinary course.

Our liability, if any, resulting from the DOJ investigation and the class action claims cannot be estimated
and as such, we have not recorded any liability within our consolidated financial statements in relation to these
matters.

We may from time to time become a party to additional legal proceedings.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

None.

48

PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER

MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Common Stock Market Price

Our common stock is traded on the NASDAQ Global Market under the symbol “ATRC”. The following

table sets forth the high and low closing sales price of our common stock for 2008 and 2007:

2008
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
First Quarter
Second Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fourth Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2007
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
First Quarter
Second Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fourth Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Price Range

High

Low

$14.05
$13.57
$11.23
$ 9.53

$10.85
$ 9.72
$ 9.65
$ 2.00

Price Range

High

Low

$13.14
$11.67
$10.98
$13.59

$ 9.14
$ 8.44
$ 8.48
$10.57

As of March 2, 2009, the closing price of our common stock on the NASDAQ Global Market was $1.26 per

share, and the number of stockholders of record was 74.

Dividend Policy

Since our incorporation, we have never declared or paid any dividends on our capital stock. Furthermore,

pursuant to our credit facility, we are currently subject to restrictions on our ability to pay dividends. We
currently expect to retain future earnings, if any, for use in the operation and expansion of our business and do
not anticipate paying any cash dividends in the foreseeable future.

49

Performance Graph

The following graph compares the cumulative total stockholder return on our common stock with the
cumulative total return of the NASDAQ Composite and the NASDAQ Medical Equipment Index for the period
beginning on August 5, 2005, our first day of trading after our initial public offering, and ending on
December 31, 2008.

COMPARISON OF 40 MONTH CUMULATIVE TOTAL RETURN*
AMONG ATRICURE, INC., THE NASDAQ COMPOSITE INDEX
AND THE NASDAQ MEDICAL EQUIPMENT INDEX

$160

$140

$120

$100

$80

$60

$40

$20

$0

8/05

12/05

6/06

12/06

6/07

12/07

6/08

12/08

ATRICURE, INC.

NASDAQ COMPOSITE

NASDAQ MEDICAL EQUIPMENT

*$100 invested on 8/5/05 in stock or 7/31/05 in index-including reinvestment of dividends.
Fiscal year ending December 31.

* This graph assumes that $100.00 was invested on August 5, 2005 in our common stock, the NASDAQ

Composite Index and the NASDAQ Medical Equipment Index, and that all dividends are reinvested. No
dividends have been declared or paid on our common stock. Stock performance shown in the above chart for
our common stock is historical and should not be considered indicative of future price performance.

AtriCure, Inc. . . . . . . . . . . . . . . . . . . . .
NASDAQ Composite . . . . . . . . . . . . . .
NASDAQ Medical Equipment . . . . . .

100.00
100.00
100.00

75.64
102.20
105.42

53.41
102.02
102.78

63.49
114.54
109.37

60.65
123.17
122.59

93.11
125.06
139.52

76.70
108.57
113.47

15.77
72.86
76.85

8/05

12/05

6/06

12/06

6/07

12/07

6/08

12/08

50

ITEM 6. SELECTED FINANCIAL DATA

The following table reflects selected financial data derived from our consolidated financial statements for
each of the last five years. The statement of operations data for the years ended December 31, 2008, 2007 and
2006, and the balance sheet data as of December 31, 2008 and 2007 are derived from our audited financial
statements included in this Form 10-K and include the operations of Enable Medical Corporation since its
acquisition on August 10, 2005. The statement of operations data for the year ended December 31, 2005 and
2004 and the balance sheet data as of December 31, 2006, 2005 and 2004 are derived from our audited financial
statements not included in this Form 10-K. Historical results are not necessarily indicative of future results. The
selected financial data set forth below should be read in conjunction with our financial statements, the related
notes and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included
elsewhere in this Form 10-K.

Operating Results:
Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gross profit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gross margin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other income (expense) . . . . . . . . . . . . . . . . . . . . . . . . . .
Income tax benefit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic and diluted net loss per share . . . . . . . . . . . . . . . . .
Weighted average shares outstanding . . . . . . . . . . . . . . .

Financial Position:
Cash, cash equivalents and short-term investments . . . .
Restricted cash and cash equivalents . . . . . . . . . . . . . . . .
Working capital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long-term debt and capital leases . . . . . . . . . . . . . . . . . .
Redeemable preferred stock . . . . . . . . . . . . . . . . . . . . . .
Accumulated deficit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stockholders’ equity (deficit) . . . . . . . . . . . . . . . . . . . . .

Year Ended December 31,

2008

2007

2006(2)

2005(1)

2004

(in thousands, except per share data)

$ 55,257
13,225
42,033

$ 48,309
10,137
38,172

$ 38,243
7,626
30,617

$ 30,957
8,057
22,900

$ 19,157
5,202
13,955

76.1%

79.0%

80.1%

74.0%

72.8%

53,031
774
(57)
(10,167)

50,740
1,315
—
(11,253)

45,386
1,052
—
(13,717)

33,750
(1,833)
—
(12,683)

$

(0.72) $

(0.84) $

(1.13) $

14,191

13,382

12,137

(2.10) $
6,025

19,608
(3,799)
—
(9,452)
(5.17)
1,828

$ 11,448
6,000
17,997
43,369
6,037
—
(77,475)
29,119

$ 20,007
—
24,624
46,071
282
—
(67,308)
36,237

$ 19,488
—
23,031
39,128
693
—
(56,055)
30,694

$ 33,802
—
35,903
50,040
1,084
—
(42,337)
43,183

$ 5,175
—
6,590
12,731
—
36,756
(29,633)
(27,331)

(1) On August 10, 2005 the Company acquired Enable Medical Corporation.
(2) Effective January 1, 2006, the Company adopted SFAS No. 123(R), Share-Based Payment (“SFAS 123R”),
which requires the measurement and recognition of compensation cost at fair value for all share-based
payments. The Company adopted SFAS 123R using the modified prospective transition method and, as a
result, did not retroactively adjust results from prior periods. For further discussion regarding SFAS 123R
see the section entitled “Share-Based Employee Compensation” in Note 1 to our Consolidated Financial
Statements.

51

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

The following discussion and analysis of our financial condition and results of operations should be read in

conjunction with the accompanying financial statements and notes thereto contained in Item 8. Financial
Statements and Supplementary Data, to provide an understanding of our results of operations, financial condition
and cash flows. This discussion and analysis contains forward-looking statements that involve risks, uncertainties
and assumptions. The actual results may differ from those anticipated in these forward-looking statements as a
result of many factors, including but not limited to those set forth under “Risk Factors” and elsewhere in this
Form 10-K.

Overview

We are a medical device company and a leader in developing, manufacturing and selling innovative cardiac
ablation products designed to create precise lesions, or scars, in cardiac, or heart tissue. Our primary product line,
which accounts for a majority of our revenues, is our AtriCure Isolator bipolar ablation system, or Isolator
system. Our Isolator system consists primarily of a compact power generator known as an ablation and sensing
unit, or ASU, a switchbox unit, or ASB, which allows physicians to toggle between multiple products and
multiple configurations of our Isolator clamps, including our Isolator Synergy clamps which were introduced
during 2007. We sell two configurations of our clamps, one designed for ablation during open-heart, or open,
procedures and one designed for ablation during sole-therapy minimally invasive procedures. We also sell a
multifunctional pen which is often used by physicians in combination with our Isolator system to ablate cardiac
tissue and for temporary pacing, sensing, stimulating and recording during the evaluation of cardiac arrhythmias.
During 2008, we introduced our Coolrail linear ablation device which has been adopted by physicians to create
an extended lesion set during minimally invasive procedures. Additionally, we sell various configurations of
enabling devices, such as our Lumitip dissection tool. In August of 2007, we acquired a cardiac cryoablation
product line which uses extreme cold to ablate tissue. Prior to our acquisition of the product line, we sold the
product line as a distributor.

We commenced a full commercial release of our primary product line, the Isolator system, for use during

open heart procedures in 2003, and have brought new products to market over time. During 2005, we
commercialized the Isolator system for use during minimally invasive sole-therapy procedures. Our revenues
have grown from $9.8 million in 2003 to $55.3 million in 2008. In August 2005 we raised net proceeds of $43.2
million through an initial public offering. Since then, we have invested heavily in expanding our product
development organization and activities and building our sales and marketing organizations and activities. Our
operating expenses have increased from $10.5 million in 2003 to $53.0 million in 2008.

Medical journals have described the adoption by leading cardiac surgeons of our Isolator system as a treatment
alternative during open-heart surgical procedures to create lesions in cardiac tissue to block the abnormal electrical
impulses that cause atrial fibrillation, or AF, a rapid, irregular quivering of the upper chambers of the heart.
Additionally, leading cardiac surgeons, treatment guidelines as published by the Heart Rhythm Society and
publications in medical journals have described our Isolator system as a standard treatment alternative for patients
who may be candidates for sole-therapy minimally invasive procedures designed to treat patients with AF.

In the United States, we primarily sell our products through our direct sales force. AtriCure Europe B.V.,
our wholly-owned European subsidiary incorporated and based in the Netherlands, sells our products throughout
Europe, primarily through distributors, with the exception of Germany, Switzerland and Austria, where we sell
directly. Additionally, we sell our products to other international distributors, primarily in Asia, South America
and Canada. Our business is primarily transacted in U.S. dollars, with the exception of transactions with our
European subsidiary, which are primarily transacted in Euros. Our sales outside of the United States represented
15.1% of our 2008 revenues compared to 13.6% in 2007 and 10.9% in 2006.

We are in the process of conducting a clinical trial, known as ABLATE, to evaluate the safety and
effectiveness of our Isolator system for the treatment of patients who have long-standing persistent AF and are

52

undergoing a concomitant open-heart procedure. If this trial is successful, we intend to seek FDA approval as early
as 2010 for the use of Isolator system during open procedures to treat patients with long-standing persistent AF. We
are also conducting a clinical trial known as EXCLUDE to evaluate the safety and effectiveness of our left atrial
appendage exclusion system which will be used in support of a 510(k) filing. If the EXCLUDE trial is successful
and we receive 510(k) clearance, we anticipate commercialization in the United States during the first half of 2010.

During 2008 we introduced our Coolrail device which has been adopted by physicians to create additional
ablations during a minimally invasive procedure and our MicroPace ORLab system, a stimulating, mapping and
recording system which enables physicians to more effectively confirm that the ablation lines being created are
forming electrical barriers or lines of block. During 2009 we plan to release several new products, including a
disposable cryoablation probe, Cryo1, which we believe will be adopted by physicians in combination with our
other products to create ablations during certain open-heart procedures. Additionally, our left atrial appendage
exclusion system is currently being utilized and has been safely and effectively implanted in humans as part of a
clinical evaluation in Europe and a FDA sponsored clinical trial in the United States. We estimate European
approval during the second half of 2009 and, pending 510(k) clearance, during 2010 in the United States.

Our costs and expenses consist of cost of revenues, research and development expenses and selling, general

and administrative expenses. Cost of revenues consist principally of the cost of purchasing materials and
manufacturing our products. Research and development expenses consist principally of expenses incurred with
respect to internal and external research and development activities and the conduct of clinical activities and
trials. Selling, general and administrative expenses consist principally of costs associated with our sales,
marketing and administrative functions and unrestricted educational grants to medical institutions.

Results of Operations

Years Ended December 31, 2008 compared to December 31, 2007

The following table sets forth, for the periods indicated, our results of operations expressed as dollar

amounts and as percentages of total revenues:

2008

2007

Amount

% of
Revenues

Amount

% of
Revenues

Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 55,257
13,225

(dollars in thousands)
100.0% $ 48,309
23.9% 10,137

100.0%
21.0%

Gross profit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating expenses:

42,033

76.1% 38,172

79.0%

Research and development expenses . . . . . . . . . . . . . . . . . . . . . .
Selling, general and administrative expenses . . . . . . . . . . . . . . . .

10,609
42,422

19.2% 10,987
76.8% 39,753

22.7%
82.3%

Total operating expenses . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss from operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

53,031
(10,998)

96.0% 50,740
-19.9% (12,568)

105.0%
-26.0%

Other income (expense):

Interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Other income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(364)
382
756

774

-0.7%
0.7%
1.4%

1.4%

(213)
948
580

1,315

-0.4%
2.0%
1.2%

2.7%

Net loss before income tax benefit . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Income tax benefit

(10,225)
(57)

-18.5% (11,253)

0.1%

—

-23.3%
0.0%

Net loss available to common stockholders . . . . . . . . . . . . . . . . . . . . .

$(10,167)

-18.4% $(11,253)

-23.3%

Amounts may not sum due to rounding.

53

Revenues. Total revenues increased $6.9 million, or 14.4%, from $48.3 million in 2007 to $55.3 million in
2008. The increase in revenues was due primarily to the sale of new products and an increase in unit sales from
existing products to international customers.

Cost of revenues. Cost of revenues increased $3.1 million, from $10.1 million in 2007 to $13.2 million in

2008, primarily due to an increase in the total number of units sold and a change in product mix. As a percentage
of revenues, cost of revenues increased from 21.0% for the year ended December 31, 2007 to 23.9% for the year
ended December 31, 2008. The increase in cost of revenues as a percentage of revenues was primarily due to the
introduction and sale of new products, including our ORLab system, which carries a higher cost of revenues than
our disposable products and an increased mix of international sales, which have a lower average selling price
than sales in the United States.

Research and development expenses. Research and development expenses decreased $0.4 million, from

$11.0 million in 2007 to $10.6 million in 2008. As a percentage of revenues, research and development expenses
decreased from 22.7% in 2007 to 19.2% in 2008. The decrease was primarily attributable to the redeployment
during 2007 of several individuals who previously focused on clinical activities to selling activities of
approximately $0.7 million, which are recorded as a component of selling, general and administrative expenses,
partially offset by increased expenditures in support of clinical trials.

Selling, general and administrative expenses. Selling, general and administrative expenses increased $2.7

million, from $39.8 million in 2007 to $42.4 million in 2008. The increase was primarily attributable to an
increase in personnel related costs of approximately $2.9 million and an increase in non-cash compensation of
$0.6 million, partially offset by reductions in overall general administrative expenses. As a percentage of total
revenues, selling, general and administrative expenses decreased from 82.3% in 2007 to 76.8% in 2008.

Net interest income. Net interest income decreased $0.7 million, from $0.7 million in 2007, due primarily

to a decrease in average net cash, cash equivalents, investments and restricted cash and cash equivalents
outstanding, an increase in debt outstanding and a reduced average effective interest rate.

Other. Other income consists of grant income, net foreign currency transaction gains and non-employee
option expense. Grant income decreased $0.3 million, from $0.6 million in 2007 to $0.3 million in 2008 and
consisted of income related to expense sharing under a grant for research and development related activities.
Foreign currency transaction loss was $0.1 million in 2008 in connection with a partial settlement of our
intercompany payable balance with our subsidiary. Non-employee option income was $0.5 million in 2008
compared to expense of $0.2 million in 2007 and is related to the fair market value change for fully vested
options outstanding for consultants, which are accounted for as free standing derivatives.

54

Years Ended December 31, 2007 compared to December 31, 2006

The following table sets forth, for the periods indicated, our results of operations expressed as dollar

amounts and as percentages of total revenue:

2007

2006

Amount

% of
Revenue

Amount

% of
Revenue

Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 48,309
10,137

(dollars in thousands)
100.0% $ 38,243
7,626
21.0%

100.0%
19.9%

Gross profit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating expenses:

38,172

79.0% 30,617

80.1%

Research and development expenses . . . . . . . . . . . . . . . . . . . . . . .
Selling, general and administrative expenses . . . . . . . . . . . . . . . . .

10,987
39,753

22.7% 12,216
82.3% 33,170

31.9%
86.7%

Total operating expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss from operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

50,740
(12,568)

105.0% 45,386
-26.0% (14,769)

118.7%
-38.6%

Other income (expense):

Interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(213)
948
580

Other income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1,315

-0.4%
2.0%
1.2%

2.7%

(209)
1,188
73

1,052

-0.5%
3.1%
0.2%

2.8%

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$(11,253)

-23.3% $(13,717)

-35.9%

Amounts may not sum due to rounding.

Revenues. Total revenues increased $10.1 million, or 26.3%, from $38.2 million in 2006 to $48.3 million in

2007. The increase was primarily attributable to an increase in unit sales of approximately 36% and a 2.5%
increase as a result of currency rate fluctuation. These increases were partially offset by a decrease in worldwide
average selling prices, or ASPs, driven by an increased mix of international sales, which generally carry a lower
ASP per unit due to the use of distributors to sell into most international markets, and product mix.

Cost of revenues. Cost of revenues increased $2.5 million, from $7.6 million in 2006 to $10.1 million in
2007, primarily due to an increase in the total number of units sold. As a percentage of revenues, cost of revenues
increased from 19.9% for the year ended December 31, 2006 to 21.0% for the year ended December 31, 2007.
The increase in cost of revenues as a percentage of revenues was primarily due to an increased mix of
international revenues, which carry a lower ASP than domestic revenues.

Research and development expenses. Research and development expenses decreased $1.2 million, from
$12.2 million in 2006 to $11.0 million in 2007. The decrease was primarily attributable to a net decrease in our
external product development expenses and redeployment during 2007 of several individuals who previously
focused on clinical activities to selling activities, a component of selling, general and administrative expenses. As
a percentage of revenues, research and development expenses decreased from 31.9% in 2006 to 22.7% in 2007.

Selling, general and administrative expenses. Selling, general and administrative expenses increased $6.6

million, from $33.2 million in 2006 to $39.8 million in 2007. The increase was primarily attributable to an
increase in headcount-related charges of $4.8 million, primarily in the sales and marketing functions, an increase
in marketing expenditures of $1.0 million to support an increased presence at several key industry events, a $0.8
million increase in stock option expense and $0.3 million related to our settlement of an outstanding legal dispute
with a former European distributor. As a percentage of total revenues, selling, general and administrative
expenses decreased from 86.7% in 2006 to 82.3% in 2007.

55

Net interest income. Net interest income decreased $0.3 million, from $1.0 million in 2006 to $0.7 million

in 2007, due primarily to a decrease in average net cash, cash equivalents, investments and restricted cash and
cash equivalents outstanding.

Other. Other income consists of grant income, foreign currency transaction gain and non-employee option

expense. Grant income increased $0.5 million, from $0.1 million in 2006 to $0.6 million in 2007 and consisted of
income related to expense sharing under a grant for research and development related activities. Foreign currency
transaction gain was $0.2 million in 2007 in connection with a partial settlement of our intercompany payable
balance with our subsidiary. Non-employee option expense of $0.2 million is related to the fair market value
change for fully vested options outstanding for consultants, which are accounted for as free standing derivatives.

Liquidity and Capital Resources

As of December 31, 2008, we had cash, cash equivalents and restricted cash and cash equivalents of $17.4
million and short-term and long-term debt of $6.0 million, resulting in a net cash position of $11.4 million. We
had working capital of $18.0 million and an accumulated deficit of $77.5 million.

On May 30, 2007, we completed a private placement of 1,789,649 shares of common stock, and received

net proceeds (after deducting transaction-related expenses) of $15.2 million. The purpose of the offering was to
raise additional funds for working capital and general purposes, including research and development activities
and potential acquisitions or other strategic initiatives.

Cash flows used in operating activities. Net cash used in operating activities was $5.7 million in 2008,

$8.1 million in 2007 and $12.5 million in 2006. Net cash used in operating activities in 2008 was primarily
attributable to the net loss of $10.2 million and cash used for an increase in inventory of $1.1 million, due
primarily to an expansion of our product offering and a reduction in fourth quarter 2008 sales, and a reduction in
accounts receivable due primarily to an improvement in days sales outstanding and a reduction in fourth quarter
2008 sales. These changes in cash were partially offset by depreciation and amortization of $2.8 million and
non-cash charges related to stock-based compensation of $2.7 million. Net cash used in operating activities in
2007 was primarily attributable to the net loss of $11.3 million and increases in accounts receivable, inventory
and other current assets of $0.6 million, $1.4 million and $0.2 million, respectively, which increased as revenues
increased and we expanded our product offering. Those increases were partially offset by adjustments for
depreciation and amortization of $2.3 million and non-cash charges related to stock-based compensation of $1.9
million and increases in payables and accrued liabilities of $0.9 million, due primarily to the growth in the
business and expansion of our product offering. Net cash used in operating activities in 2006 was primarily
attributable to the net loss of $13.7 million and increases in accounts receivable, inventory and other current
assets of $1.8 million, $1.3 million and $0.4 million, respectively, which increased as revenues increased and we
expanded our product offering. Those increases were partially offset by adjustments for depreciation and
amortization of $1.9 million and non-cash charges related to stock-based compensation of $1.0 million and
increases in payables and accrued liabilities of $1.6 million due to our increase in operating expenses.

Cash flows used in and provided by investing activities. Net cash used in investing activities was $1.2

million in 2008 and $8.8 million in 2007 compared with cash flows provided by investing activities of $0.1
million in 2006. Cash used in investing activities reflected purchases of property and equipment of $1.7 million,
$3.0 million and $1.7 million for 2008, 2007 and 2006, respectively, the net purchases and maturities of
investments of ($7.0) million, $2.4 million and ($1.8) million, for 2008, 2007 and 2006, respectively and, in 2008
and 2007, cash paid for an acquisition, net of cash acquired of $0.4 million and $3.3 million, respectively, for the
Frigitronics CCS-200 product line. During 2007, the increase in the purchase of property, plant and equipment
was primarily due to the introduction of our ASB in accordance with the launch of our Isolator Synergy platform.
The ASB is new hardware which we generally loan to our customers.

Cash flows provided by and used in financing activities. Net cash provided by financing activities was

$5.2 million in 2008 and $15.0 million in 2007 compared with net cash used in financing activities of $0.3

56

million in 2006. In 2008, cash flows provided by financing activities included $6.0 million related to our new
credit facility partially offset by the repayment of existing debt, capital leases and debt fees of $1.1 million. In
2007, cash flows provided by financing activities included $15.2 million in net proceeds from our May 2007
private placement of 1.8 million shares of our common stock.

Credit facility. On July 1, 2008, we entered into a two-year credit facility with National City Bank. The
credit facility matures on July 1, 2010 and is secured by all of our assets and property, tangible and intangible.
On December 31, 2008, National City Bank merged with PNC Bank.

The credit facility provides for a revolving credit facility of up to $10.0 million and a letter of credit facility
for an amount equal to the lesser of: (i) $1.5 million or (ii) the availability under the revolving credit facility. We
must maintain all of our primary deposit accounts with National City or a subsidiary of National City, and we
were required to deliver cash and/or money market funds having an aggregate value of at least $2.0 million
which is to be held in a restricted securities account. This balance will remain in the restricted account until all of
our obligations under the credit facility are paid in full.

The first $6.0 million of availability under the revolving credit facility is available in $2.0 million
increments, tied to a corresponding balance deposited in the restricted securities account. We will be allowed,
provided there are no events of default, to decrease and increase the account value in the restricted securities
account at our sole discretion, thereby correspondingly decreasing or increasing the revolving credit availability
between $2.0 million and $6.0 million in $2.0 million increments. Revolving credit availability between $6.0
million and $10.0 million also requires a cash equivalent to borrowing ratio of not less than 1.25 to 1.0. The
revolving credit availability is also subject at all times to adequate levels of eligible accounts receivables and
inventory, among other factors.

Interest under the credit facility accrues at one month LIBOR (London Interbank Offered Rate) plus

2.25% per annum or if one month LIBOR is unavailable, as provided under the credit agreement, then the interest
rate shall be a fluctuating rate equal to the prime rate publicly announced from time to time by National City. Our
effective borrowing rate at December 31, 2008 was 2.69%. For letters of credit, we will pay a fee at a rate per
annum equal to 1.50% on the amount available to be drawn under the letter of credit from the issuance date (and,
as applicable, each renewal date) up to the expiration date. During certain events of default described in the credit
agreement, the applicable interest rate increases by 2.0%.

The credit facility contains customary negative covenants, including limitations on liens, dividends,

investments and the incurrence of additional indebtedness, and customary affirmative covenants, including
reporting with respect to financial statements, receivables, inventory, material contracts, and FDA inspections. In
addition, the credit facility contains a financial covenant that requires our loss before considering interest, taxes,
depreciation and amortization to be no more than $15.0 million per annum. The credit facility also contains
customary events of default, including cross-defaults on our indebtedness in excess of $0.3 million.

As of December 31, 2008, $6.0 million was outstanding under the credit facility and $6.0 million was held

as restricted cash and cash equivalents.

On July 2, 2008, as a condition to entering into the credit facility, we repaid in full our outstanding
indebtedness to Lighthouse Capital Partners V.L.P. We paid $0.7 million to Lighthouse, which consisted of
outstanding principal, accrued interest and a final payment fee due at maturity.

Unsecured promissory note. Under the terms and conditions of the Bill of Sale and Assignment

Agreement with CooperSurgical, Inc. (“Cooper”) we entered into an unsecured promissory note agreement for
$0.4 million, which bore interest at 5.0%. The note was repaid in full in January 2008 and was recorded as
additional cash paid for acquisition in our Consolidated Statement of Cash Flows.

Uses of liquidity and capital resources. Our future capital requirements depend on a number of factors,

including possible acquisitions and joint ventures, the rate of market acceptance of our current and future

57

products, the resources we devote to developing and supporting our products, future expenses to expand and
support our sales and marketing efforts, costs associated with the Department of Justice investigation, costs
relating to changes in regulatory policies or laws that affect our operations and costs of filing, prosecuting,
defending and enforcing our intellectual property rights. Global economic turmoil may adversely impact our
revenue, access to the capital markets or future demand for our products. We expect to increase capital
expenditures consistent with our anticipated growth in research and development, manufacturing, infrastructure
and personnel.

We believe that our current cash and cash equivalents, along with the cash we expect to generate from
operations, will be sufficient to meet our anticipated cash needs for working capital and capital expenditures for
at least the next 12 months. If these sources of cash are insufficient to satisfy our liquidity requirements, we may
seek to sell additional equity or debt securities or obtain a revised or additional credit facility. The sale of
additional equity or convertible debt securities could result in dilution to our stockholders. If additional funds are
raised through the issuance of debt securities, these securities could have rights senior to those associated with
our common stock and could contain covenants that would restrict our operations. Additional financing may not
be available at all, or in amounts or terms acceptable to us. If we are unable to obtain this additional financing,
we may be required to reduce the scope of our planned research and development and selling and marketing
efforts.

Contractual Obligations and Commitments

Purchase Obligations

On June 15, 2007 the Company entered into a purchase agreement with Micropace Pty Ltd Inc.,
(“Micropace”), which was amended in June 2008. Under the amended agreement, Micropace produced a
derivative of one of their products tailored for the cardiac surgical environment, known as the “Micropace
ORLab” for worldwide distribution by the Company. Pursuant to the terms of the amended agreement, the
Company is required to purchase at least 230 units by December 31, 2010. Minimum purchase requirements by
year are 70 units for 2008 and 80 units each for 2009 and 2010. Units purchased in excess of yearly minimums in
a year reduce future minimum purchases. In addition, the Company agreed to and purchased a minimum of four
MicroPace ORLab product demonstration units in the first 12 months at an estimated cost of $40,000. During
2008, the Company purchased 123 units and has 107 units remaining to purchase under the commitment.

Life Support Technology, LST b.v.

In September of 2007, multiple proceedings between Life Support Technology, LST b.v., or L.S.T., a
former distributor of our products in Europe, and AtriCure, Inc. were settled. The settlement agreement provides
for AtriCure to pay LST €257,360 (euros) in 16 payments of €16,085, with the final payment due January 1,
2011. If the U.S. Dollar to Euro conversion rate on any of the 16 payment due dates set forth in the agreement is
less than $1.36 to the Euro, we will owe LST additional compensation, up to a maximum of €28,310. As of
December 31, 2008, $0.2 million was recorded as a liability.

The following sets forth our approximate aggregate obligations at December 31, 2008 for future payments

under contracts and other contingent commitments:

Contractual Obligations

Total

Less than 1 year

1-3 years

3-5 years*

. . . . . . . . . . . . . . . . . .
Long-term debt and capital leases(1)
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchase obligations(2)
Operating leases(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Royalty obligations(4)
LST settlement agreement
. . . . . . . . . . . . . . . . . . . . . . . . .
Physician consulting agreements(5) . . . . . . . . . . . . . . . . . . .

$6,312,709
1,872,500
529,732
200,000
184,632
105,000

$ 195,404
472,500
429,720
200,000
78,162
105,000

$6,117,305
1,400,000
100,012
—
106,470
—

Total contractual obligations . . . . . . . . . . . . . . . . . . . . . . . .

$9,204,573

$1,480,786

$7,723,787

$—
—
—
—
—
—

$—

58

* There are no contractual obligations after year 2011.
(1) Long-term debt represents principal repayment in 2010. We pay interest at one month LIBOR plus

2.25% per annum. For purposes of the above table, interest due was calculated at 2.69%, the current rate as
of December 31, 2008. Capital leases consist of principal and interest payments required for our disaster
recovery computer equipment.

(2) Represents estimated minimum number of units to be purchased from Micropace for the ORLab units in

order to maintain exclusive distribution rights. Represents 2009 purchase of an additional 27 units and 2010
purchase of an additional 80 units.

(3) Represents lease commitments under various operating leases.
(4) Represents minimum payments required under the terms of a royalty agreement between us and Randall K.
Wolf, M.D. not to exceed in aggregate $2.0 million from October 1, 2005 through December 31, 2009. The
table above reflects the minimum amount due to Randall K. Wolf in 2009, which was estimated.

(5) Represents estimated minimum payments to various physicians for consulting services.

Off-Balance-Sheet Arrangements

As of December 31, 2008 we had operating lease agreements not recorded on the Consolidated Balance

Sheets. Operating leases are utilized in the normal course of business.

Inflation

Inflation has not had a significant impact on our historical operations and we do not expect it to have a

significant impact on our results of operations or financial condition in the foreseeable future.

Critical Accounting Policies and Estimates

Our discussion and analysis of our financial condition and results of operations is based upon our financial
statements, which have been prepared in accordance with accounting principles generally accepted in the United
States. The preparation of financial statements requires management to make estimates and judgments that affect
the reported amounts of assets and liabilities, revenues and expenses, and disclosures of contingent assets and
liabilities at the date of the financial statements. On a periodic basis, we evaluate our estimates, including those
related to sales returns and allowances, accounts receivable, inventories and share-based compensation. We use
authoritative pronouncements, historical experience and other assumptions as the basis for making estimates.
Actual results could differ from those estimates under different assumptions or conditions.

We believe the following critical accounting policies affect our more significant judgments and estimates

used in the preparation of our financial statements.

Share-Based Employee Compensation—On January 1, 2006, we adopted Statement of Financial
Accounting Standards No. 123 (revised 2004), “Share-Based Payment,” (“SFAS 123(R)”), which requires the
measurement and recognition of compensation expense for all share-based payment awards made to employees
and directors, including employee stock options, restricted stock, performance shares and employee stock
purchases related to an employee stock purchase plan, based on estimated fair values. SFAS 123(R) supersedes
our previous accounting under Accounting Principles Board Opinion No. 25, “Accounting for Stock Issued to
Employees” (“APB 25”) for periods beginning in 2006. In March 2005, the SEC issued Staff Accounting
Bulletin No. 107 (“SAB 107”) relating to SFAS 123(R). We have applied the provisions of SAB 107 in our
adoption of SFAS 123(R).

We adopted SFAS 123(R) using the modified prospective transition method. In accordance with the
modified prospective transition method, share-based compensation expense recognized under SFAS 123(R) for
the years ended December 31, 2008, 2007 and 2006 was $2.7 million, $1.5 million and $1.3 million, respectively
on a before and after tax basis.

59

SFAS 123(R) requires companies to estimate the fair value of share-based payment awards on the date of
grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is
recognized as expense over the requisite service periods in our Consolidated Statement of Operations. The
expense has been reduced for estimated forfeitures. SFAS 123(R) requires forfeitures to be estimated at the time
of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates.

We estimate the fair value of options on the date of grant using the Black-Scholes option-pricing model
(“Black-Scholes model”). Our determination of fair value of share-based payment awards on the date of grant
using an option-pricing model is affected by our stock price, as well as assumptions regarding a number of highly
complex and subjective variables. These variables include but are not limited to our expected stock price
volatility over the term of the awards and actual and projected employee stock option exercise behaviors.

We estimate the fair value of restricted stock and performance share awards based upon the grant date
closing market price of our common stock. Our determination of fair value is affected by our stock price as well
as assumptions regarding the number of shares expected to be granted and, in the case of performance shares, the
likelihood that the performance measures will be achieved.

We also have an employee stock purchase plan (“ESPP”) which is available to all eligible employees as

defined in the Plan. Under the ESPP, shares of our common stock may be purchased at a discount. We estimate
the number of shares to be purchased under the Plan and record compensation expense based upon the fair value
of the stock at the beginning of the purchase period using the Black-Scholes model.

Certain of our share-based payment arrangements are outside the scope of SFAS No. 123(R) and are subject

to Emerging Issues Task Force (“EITF”) Issue No. 00-19, “Accounting for Derivative Financial Instruments
Indexed to, and Potentially Settled in, a Company’s Own Stock,” which requires vested stock options held by
certain non-employee consultants to be accounted for as liability awards until these awards are exercised or
forfeited. The fair value of these awards are remeasured at each financial statement date until the awards are
settled or expire. During the year ended December 31, 2008, $0.5 million of income was recorded as a result of
the remeasurement of the fair value of these awards compared with $0.2 million of expense in 2007. As of
December 31, 2008 and 2007, respectively, options to acquire 54,660 and 83,735 shares of common stock held
by non-employee consultants remained unexercised and a liability of $40,368 and $660,827 was included in
accrued liabilities in the Consolidated Balance Sheets.

On November 10, 2005 the Financial Accounting Standards Board (“FASB”) issued FASB Staff Position
No. FAS 123(R)-3 “Transition Election Related to Accounting for Tax Effects of Share-Based Payment Awards”
(the “FASB Staff Position”). We have elected to adopt the alternative transition method provided in the FASB
Staff Position for calculating the tax effects of stock-based compensation pursuant to SFAS 123(R). The
alternative transition method includes simplified methods to establish the beginning balance of the additional
paid-in capital pool (“APIC pool”) related to the tax effects of employee stock-based compensation and to
determine the subsequent impact on the APIC pool and Consolidated Statements of Cash Flows of the tax effects
of employee stock-based compensation awards that are outstanding upon adoption of SFAS 123(R).

Revenue Recognition—Revenues are generated primarily from the sale of our disposable surgical devices.
Pursuant to our standard terms of sale, revenues are recognized when title to the goods and risk of loss transfers
to customers and there are no remaining obligations that will affect the customers’ final acceptance of the sale.
Generally, our standard terms of sale define the transfer of title and risk of loss to occur upon shipment to the
respective customer. We generally do not maintain any post-shipping obligations to the recipients of the
products. Typically, no installation, calibration or testing of this equipment is performed by us subsequent to
shipment to the customer in order to render it operational. Product revenues include shipping revenues of $0.8
million, $0.5 million and $0.2 million in 2008, 2007, and 2006, respectively. Cost of freight for shipments made
to customers is included in cost of revenues. Sales and other value-added taxes collected from customers and
remitted to governmental authorities are excluded from product revenues. We sell our products primarily through

60

our direct sales force and through our wholly-owned subsidiary AtriCure Europe B.V. Terms of sale are
generally consistent for both end-users and distributors and payment terms are generally net 30 days for end
users and net 60 days for distributors

We comply with SEC Staff Accounting Bulletin No. 101, Recognition in Financial Statements, or SAB 101,
as amended by SAB 104. SAB 101 sets forth guidelines on the timing of revenue recognition based upon factors
such as passage of title, installation, payment terms and ability to return products. We recognize revenues when
all of the following criteria are met: persuasive evidence that an arrangement exists; delivery of the products or
services has occurred; the selling price is fixed or determinable; and collectability is reasonably assured.

Sales Returns and Allowances—We maintain a provision for sales returns and allowances as a result of

defective or damaged products or when price reductions are given to customers. During 2008 and 2007 our
estimates were made based primarily on a specific identification basis. In 2006, no provision for sales returns and
allowances was recorded due to limited returns and insignificant allowances. Increases to the provision result in a
reduction of revenue. We expect to refine our methodology to estimate this provision as we accumulate
additional historical data and experience.

Allowance for Uncollectible Accounts Receivable—We systematically evaluate the collectability of
accounts receivable and determine the appropriate reserve for doubtful accounts. In determining the amount of
the reserve, we consider aging of account balances, historical credit losses, customer-specific information, and
other relevant factors. Increases to the allowance for doubtful accounts results in a corresponding expense.
Periodically, we review accounts receivable and adjust the allowance based on current circumstances and
charge-off uncollectible receivables against the allowance when all attempts to collect the receivable have failed.

Inventory Valuation—Inventories are stated at the lower of cost or market using the first-in, first-out
(“FIFO”) cost method and consist of raw materials, work in process, and finished goods. Reserves are estimated
for excess, slow-moving and obsolete inventory, as well as inventory with a carrying value in excess of its net
realizable value. Write-offs are recorded when the product is destroyed. We review inventory on hand at least
quarterly and record provisions for excess and obsolete inventory based on several factors including our current
assessment of future product demand, anticipated release of new products into the market, historical experience
and product expiration. Our industry is characterized by rapid product development and frequent new product
introductions. Uncertain timing of product approvals, variability in product launch strategies, product recalls and
variation in product utilization all impact the estimates related to excess and obsolete inventory.

Property and Equipment—Property and equipment is stated at cost, less accumulated depreciation.
Depreciation is computed on the straight-line method for financial reporting purposes over the estimated useful
lives of the assets. The estimated useful life by major asset category is the following: machinery and equipment
is three to seven years, computer and other office equipment is three years, furniture and fixtures is three to seven
years, and leasehold improvements and leased equipment under a capital lease are the shorter of their useful life
or remaining lease term. Maintenance and repair costs are expensed as incurred.

Included in property and equipment are our ASBs and ASUs and other capital equipment that are loaned at
no cost to customers who use our disposable products. This equipment is depreciated over three years and such
depreciation is included in cost of revenues. The total of such depreciation was $1.1 million, $0.8 million and
$0.7 million in 2008, 2007, and 2006, respectively.

Impairment of Long-Lived Assets (Other than Goodwill)—We review property and equipment and

definite-lived intangibles for impairment using our best estimates based on reasonable and supportable
assumptions and projections in accordance with Statement of Financial Accounting Standards (“SFAS”) No. 144,
“Accounting for the Impairment or Disposal of Long-Lived Assets.” We recorded a charge of $0.2 million in
2008 for the impairment of fixed assets and machinery and equipment related to discontinued product lines. In
2007, we recorded a charge of $0.1 million for the impairment of obsolete machinery and equipment and tooling.
We did not recognize any impairment of long-lived assets in 2006.

61

Goodwill and Intangible Assets—As of December 31, 2008 we had $6.8 million in goodwill, which
represents the excess of costs over the fair value of the net assets acquired in business combinations. We test
goodwill for impairment annually during the fourth quarter, or more often if impairment indicators are present, to
determine if the fair value of the business can support the amount of goodwill. The goodwill tests include
discounted cash flow models and a market valuation approach. The discounted cash flow models include
assumptions about future market conditions and operating results. If an impairment test indicates the fair value of
the Company cannot support the amount of goodwill recorded, we will be required to record a goodwill
impairment charge. As a result, the value of the assets could be significantly reduced, which would increase
operating expenses and reduce net income for the period in which the charge occurs. As of December 31, 2008
there was no indication that an impairment existed and we did not recognize any impairment during 2008, 2007
or 2006. Subsequent to December 31, 2008 our market capitalization has dropped and has been less than our
recorded net book value, which could be an indicator that impairment exists. We anticipate testing our goodwill
for impairment during the first quarter of 2009, which could result in the recording of a partial or full impairment
of our goodwill.

Intangible assets with determinable useful lives are amortized on a straight line basis over the estimated

periods benefited.

Deferred Tax Asset Valuation Allowance—Income taxes have been computed using the asset and liability

method, under which deferred income taxes are provided for the temporary differences between the financial
reporting basis and the tax basis of our assets and liabilities. Deferred taxes are measured using provisions of
currently enacted tax laws. A valuation allowance against deferred tax assets is recorded when it is more likely
than not that such assets will not be fully realized. Tax credits are accounted for as a reduction of income taxes in
the year in which the credit originates. Our estimate for the valuation allowance for deferred tax assets requires
us to make significant estimates and judgments about our future operating results. Our ability to realize the
deferred tax assets depends on our future taxable income as well as limitations on their utilization. A deferred tax
asset is reduced by a valuation allowance if it is more likely than not that some portion or all of the deferred tax
asset will not be realized prior to its expiration. The projections of our operating results on which the
establishment of a valuation allowance is based involve significant estimates regarding future demand for our
products, competitive conditions, product development efforts, approvals of regulatory agencies, and product
cost. If actual results differ from these projections, or if our expectations of future results change, it may be
necessary to adjust the valuation allowance.

Accounting for Business Combinations—In accounting for business combinations, we apply the
accounting requirements of Statement of Financial Accounting Standards No. 141, “Business Combinations”
which requires the recording of net assets of acquired businesses at fair value. In developing estimates of the fair
value of acquired assets and assumed liabilities, we analyze a variety of factors including market data, estimated
future cash flows of the acquired operations, industry growth rates, current replacement costs and market rate
assumptions for contractual obligations. This valuation requires significant estimates and assumptions, especially
with respect to the valuation of intangible assets.

Recent Accounting Pronouncements

In December 2007 the FASB issued SFAS No. 141(R), which replaces FAS 141. SFAS 141(R) establishes

principles and requirements for how an acquirer in a business combination recognizes and measures in its
financial statements the identifiable assets acquired, the liabilities assumed, and any controlling interest;
recognizes and measures the goodwill acquired in the business combination or a gain from a bargain purchase;
and determines what information to disclose to enable users of the financial statements to evaluate the nature and
financial effects of the business combination. SFAS 141(R) is to be applied prospectively to business
combinations for which the acquisition date is on or after an entity’s fiscal year that begins after December 15,
2008, except for certain tax adjustments for prior business combinations and will apply to business combinations
completed on or after that date.

62

In March 2008 the FASB issued SFAS No. 161 “Disclosures about Derivative Instruments and Hedging
Activities—an amendment of SFAS 133” (“SFAS 161”). SFAS 161 is intended to improve financial reporting
about derivative instruments and hedging activities by requiring enhanced disclosures to enable investors to
better understand their effects on an entity’s financial position, financial performance and cash flows. This
statement will be applicable to us on January 1, 2009. We do not believe the adoption of SFAS 161 will have a
material impact on our disclosures.

In April 2008 the FASB issued FSP No. FAS 142-3, “Determination of the Useful Life of Intangible Assets”
(“FSP No. FAS 142-3”). FSP No. FAS 142-3 amends the factors that should be considered in developing renewal
or extension assumptions used to determine the useful life of a recognized intangible asset under SFAS No. 142,
“Goodwill and Other Intangible Assets.” The intent of this FSP is to improve the consistency between the useful
life of a recognized intangible asset under SFAS No. 142 and the period of expected cash flows used to measure
the fair value of the asset under SFAS No. 141(R) and other GAAP. FSP No. FAS 142-3 is effective for fiscal
years, and interim periods within those fiscal years, beginning after December 15, 2008. We do not expect the
adoption of FSP No. FAS 142-3 to have a material impact on our financial statements.

In May 2008 the FASB issued SFAS No. 162, “The Hierarchy of Generally Accepted Accounting Principles”

(“SFAS No. 162”). SFAS No. 162 identifies the sources of accounting principles and the framework for selecting
the principles used in the preparation of financial statements of nongovernmental entities that are presented in
conformity with GAAP in the United States. SFAS No. 162 is effective 60 days following approval by the
Securities and Exchange Commission (“SEC”) of the Public Company Accounting Oversight Board amendments to
AU Section 411, “The Meaning of ‘Present Fairly in Conformity With Generally Accepted Accounting Principles’”
We do not expect the adoption of SFAS No. 162 to have a material impact on our financial statements.

Effective January 1, 2008 we adopted EITF 07-3, “Accounting for Nonrefundable Advance Payments for

Goods or Services Received for Use in Future Research and Development Activities” (“EITF 07-3”). EITF 07-3
requires that nonrefundable advance payments for goods or services that will be used or rendered for future
research and development activities be deferred and capitalized and recognized as an expense as the goods are
delivered or the related services are performed. The adoption did not have a material impact on our consolidated
results of operations or financial condition.

Effective January 1, 2008 we adopted SFAS No. 157, “Fair Value Measurements” (“SFAS 157”). In
February 2008 the FASB issued FASB Staff Position No. FAS 157-2, “Effective Date of FASB Statement
No. 157” which provides a one year deferral of the effective date of SFAS 157 for non-financial assets and
non-financial liabilities, except those that are recognized or disclosed in the financial statements at fair value at
least annually. Therefore, we have adopted the provisions of SFAS 157 with respect to its financial assets and
liabilities only. SFAS 157 defines fair value, establishes a framework for measuring fair value under generally
accepted accounting principles and enhances disclosures about fair value measurements. Fair value is defined
under SFAS 157 as the exchange price that would be received for an asset or paid to transfer a liability (an exit
price) in the principal or most advantageous market for the asset or liability in an orderly transaction between
market participants on the measurement date. Valuation techniques used to measure fair value under SFAS 157
must maximize the use of observable inputs and minimize the use of unobservable inputs. The standard describes
a fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last
unobservable, that may be used to measure fair value which are the following:

•

•

•

Level 1—Quoted prices in active markets for identical assets or liabilities.

Level 2—Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted
prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are
observable or can be corroborated by observable market data for substantially the full term of the assets
or liabilities.

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant
to the fair value of the assets or liabilities.

63

Effective January 1, 2008 we adopted SFAS No. 159 “The Fair Value Option for Financial Assets and
Financial Liabilities” (“SFAS 159”). SFAS 159 allows an entity the irrevocable option to elect fair value for the
initial and subsequent measurement for specified financial assets and liabilities on a contract-by-contract basis.
We did not elect to adopt the fair value option under this Statement.

64

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We have financial instruments accounted for as free-standing derivatives related to certain of the

Company’s share-based payment arrangements that are outside the scope of SFAS No. 123(R) and are subject to
Emerging Issues Task Force (“EITF”) Issue No. 00-19, “Accounting for Derivative Financial Instruments
Indexed to, and Potentially Settled in, a Company’s Own Stock” which requires vested stock options held by
certain non-employee consultants to be accounted for as liabilities until these awards are exercised or forfeited.
The fair value of these awards is remeasured at each financial statement date until the awards are settled or
expire. Income/(expense) recorded based on the remeasurement of these options was $0.5 million and ($0.2
million) for the years ended December 31, 2008 and 2007, respectively. As of December 31, 2008 stock options
to acquire 54,660 shares of common stock held by non-employee consultants remained unexercised and a
liability of $40,368 at December 31, 2008 is included in accrued liabilities in the accompanying Consolidated
Balance Sheet. We are exposed to the volatility of the market price of our stock. If the market price of our stock
increased by $1 as of December 31, 2008, we would have recorded approximately $32,000 in additional expense
related to these awards.

We are exposed to various market risks, which include potential losses arising from adverse changes in

market rates and prices, such as foreign exchange fluctuations and changes in interest rates. Borrowings under
our revolving line of credit with National City Bank bear interest at one month LIBOR (London Interbank
Offered Rate) plus 2.25% per annum or, if one month LIBOR is unavailable as provided under the credit
agreement, then the interest rate shall be a fluctuating rate equal to the prime rate publicly announced from time
to time by National City. At December 31, 2008, our effective borrowing rate was 2.69% and the carrying value
and fair value of the outstanding balance under the line of credit was $6.0 million. Based upon this debt level, a
10% increase in the interest rate would not have a material impact on our Company. For the years ended
December 31, 2008 and 2007, products sold by AtriCure Europe B.V. accounted for 8.1% and 7.1%,
respectively, of our total revenues. Since such revenues were primarily denominated in Euros, we have exposure
to exchange rate fluctuations between the Euro and the U.S. Dollar. To date, the effect of the foreign exchange
rate fluctuations on our financial results has not been significant. In 2008, we recorded foreign currency
transaction losses of $64,176 in connection with partial settlements of our intercompany receivable balance with
our subsidiary. For revenues denominated in Euros, if there is an increase in the rate at which Euros are
exchanged for U.S. Dollars, it will require more Euros to equal a specified amount of U.S. Dollars than before
the rate increase. In such cases, and if we price our products in Euros, we will receive less in U.S. Dollars than
we did before the rate increase went into effect. If we price our products in U.S. Dollars and competitors price
their products in Euros, an increase in the relative strength of the U.S. Dollar could result in our price not being
competitive in a market where business is transacted in Euros. The Euro to U.S. dollar conversion rate
fluctuations may impact our reported revenues and expenses.

We currently invest our cash and restricted cash primarily in money market accounts. Historically we have

also invested our cash in U.S. government securities, corporate notes, corporate bonds, medium term notes,
money market securities and commercial paper. Although we believe our cash and restricted cash is invested in a
conservative manner, with cash preservation being our primary investment objective, the value of the
securities we hold will fluctuate with changes in the financial markets including, among other things, changes in
interest rates, credit quality and general volatility. We manage this risk by investing in high quality investment
grade securities with very short-term maturities.

65

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

ATRICURE, INC. AND SUBSIDIARY

INDEX TO FINANCIAL STATEMENTS

Financial Statements:

Report of Independent Registered Public Accounting Firm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Consolidated Balance Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Consolidated Statements of Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Consolidated Statements of Stockholders’ Equity (Deficit)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Consolidated Statements of Cash Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Notes to Consolidated Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

67
68
69
70
71
72

Financial Statement Schedule:

Schedule II Valuation and Qualifying Accounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

94

66

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of
AtriCure, Inc.
West Chester, Ohio

We have audited the accompanying consolidated balance sheets of AtriCure, Inc. and subsidiary (the

“Company”) as of December 31, 2008 and 2007, and the related consolidated statements of operations,
stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2008. Our
audits also included the financial statement schedule listed in the Index at Item 15. These financial statements
and financial statement schedule are the responsibility of the Company’s management. Our responsibility is to
express an opinion on the financial statements and financial statement schedule 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. An audit includes examining, on a test
basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes
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 AtriCure, Inc. and subsidiary at December 31, 2008 and 2007, and the results of their operations and
their cash flows for each of the three years in the period ended December 31, 2008, in conformity with
accounting principles generally accepted in the United States of America. Also, in our opinion, such financial
statement schedule, when considered in relation to the basic consolidated financial statements taken as a whole,
present fairly, in all material respects, the information set forth therein.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board

(United States), the Company’s internal control over financial reporting as of December 31, 2008, based on the
criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring
Organizations of the Treadway Commission and our report dated March 12, 2009 expressed an unqualified
opinion on the Company’s internal control over financial reporting.

/s/ Deloitte & Touche LLP
Cincinnati, Ohio
March 12, 2009

67

ATRICURE, INC. AND SUBSIDIARY

CONDENSED CONSOLIDATED BALANCE SHEETS
DECEMBER 31, 2008 and 2007

2008

2007

Assets
Current assets:

Cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Short-term investments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accounts receivable, less allowance for doubtful accounts of $40,480 and

$26,181, respectively . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventories, net
Other current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Property and equipment, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restricted cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 11,448,451
—

$ 13,000,652
7,006,041

6,511,594
6,361,242
1,781,825

26,103,112
3,682,819
569,153
6,812,389
6,000,000
201,359

7,189,512
5,266,155
1,400,163

33,862,523
4,466,060
850,653
6,763,259
—
129,001

Total Assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 43,368,832

$ 46,071,496

Liabilities and Stockholders’ Equity

Current liabilities:

Accounts payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current maturities of debt and capital leases . . . . . . . . . . . . . . . . . . . . . . . . .

$

Total current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long-term debt and capital leases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

5,150,033
2,922,563
34,004

8,106,600
6,036,605

Other liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

106,470

Total Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Commitments and contingencies (Note 11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14,249,675
—

4,651,201
3,762,455
825,146

9,238,802
282,475

313,717

9,834,994

—

Stockholders’ Equity:

Common stock, $.001 par value, 90,000,000 shares authorized and

14,274,884 and 14,132,424 issued and outstanding, respectively . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Additional paid-in capital
Accumulated other comprehensive (loss) income . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accumulated deficit

14,275
106,636,653
(56,789)
(77,474,982)

14,132
103,524,814
5,286
(67,307,730)

Total Stockholders’ Equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

29,119,157

36,236,502

Total Liabilities and Stockholders’ Equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 43,368,832

$ 46,071,496

See accompanying notes to consolidated financial statements.

68

ATRICURE, INC. AND SUBSIDIARY

CONSOLIDATED STATEMENTS OF OPERATIONS
YEARS ENDED DECEMBER 31, 2008, 2007 and 2006

2008

2007

2006

Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 55,257,023
13,224,504

$ 48,309,063
10,136,776

$ 38,243,243
7,626,362

Gross profit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42,032,519

38,172,287

30,616,881

Operating expenses:

Research and development expenses . . . . . . . . . . . . . . . . . . .
Selling, general and administrative expenses . . . . . . . . . . . . .

10,608,668
42,422,133

10,987,477
39,752,513

12,215,617
33,170,328

Total operating expenses . . . . . . . . . . . . . . . . . . . . . . . . .

53,030,801

50,739,990

45,385,945

Loss from operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(10,998,282)

(12,567,703)

(14,769,064)

Other income (expense):

Interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(364,071)
382,285
755,564

(213,104)
947,888
579,853

(208,551)
1,187,708
72,632

. . . . . . . . . . . . . . . . . . . . . . . . .
Net loss before income tax benefit
Income tax benefit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(10,224,504)
(57,252)

(11,253,066)

(13,717,275)

—

—

Net loss available to common stockholders . . . . . . . . . . . . . . . . . .

$(10,167,252) $(11,253,066) $(13,717,275)

Basic and diluted loss per share . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

(0.72) $

(0.84) $

(1.13)

Weighted average shares outstanding—basic and diluted . . . . . . .

14,191,000

13,381,715

12,137,258

See accompanying notes to consolidated financial statements.

69

ATRICURE, INC. AND SUBSIDIARY

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (DEFICIT)
YEARS ENDED DECEMBER 31, 2008, 2007, and 2006

Common Stock

Shares Amount

Additional
Paid-in
Capital

Unearned
Compensation

Accumulated
Deficit

Accumulated
Other
Comprehensive
Income (Loss)

Total
Stockholders’
Equity
(Deficit)

Comprehensive
Loss

Balance—December 31, 2005 . . . 12,086,482 $12,086 $ 86,107,520

$(599,591) $(42,337,389)

$

826

$ 43,183,452

Issuance of common stock

under stock option plans and
warrants . . . . . . . . . . . . . . . . .
Non-employee stock option fair
market value adjustment . . . .

Reclassification upon adoption

of SFAS 123(R) . . . . . . . . . .

Share-based employee

compensation expense . . . . .

Unrealized gains on

investments . . . . . . . . . . . . . .

Foreign currency translation

adjustment . . . . . . . . . . . . . . .
Net loss . . . . . . . . . . . . . . . . . . .

Comprehensive loss . . . . . . . . . . .

102,118

103

92,367

(212,356)

(599,591)

599,591

1,258,124

92,470

(212,356)

—

1,258,124

(13,717,275)

3,960

85,887

3,960 $

3,960

85,887
(13,717,275)

85,887
(13,717,275)

$(13,627,428)

Balance—December 31, 2006 . . . 12,188,600 12,189

86,646,064

—

(56,054,664)

90,673

30,694,262

Issuance of common stock

under stock option plans and
warrants . . . . . . . . . . . . . . . . .
Non-employee stock option fair
market value adjustment . . . .

Share-based employee

compensation expense . . . . .

Unrealized gains on

investments . . . . . . . . . . . . . .

Foreign currency translation

adjustment . . . . . . . . . . . . . . .

Reclassification of non-

employee option liability . . .

Private placement of common

154,175

154

174,788

381,856

1,510,361

(433,407)

shares . . . . . . . . . . . . . . . . . . 1,789,649

1,789

15,245,152

Net loss . . . . . . . . . . . . . . . . . . .

Comprehensive loss . . . . . . . . . . .

(11,253,066)

174,942

381,856

1,510,361

7,343

7,343

7,343

(92,730)

(92,730)

(92,730)

(433,407)

15,246,941
(11,253,066)

(11,253,066)

$(11,338,453)

Balance—December 31, 2007 . . . 14,132,424 14,132 103,524,814

—

(67,307,730)

5,286

36,236,502

Issuance of common stock

under stock option plans . . . .

87,537

54,923

Issuance of common stock

under stock purchase plan . . .
Non-employee stock option fair
market value adjustment . . . .

Share-based employee

compensation expense . . . . .

Reversal of prior period
unrealized gains on
investments . . . . . . . . . . . . . .

Foreign currency translation

adjustment . . . . . . . . . . . . . . .
Net loss . . . . . . . . . . . . . . . . . . .

Comprehensive loss . . . . . . . . . . .

88

55

337,252

103,584

1,681

2,669,322

337,340

103,639

1,681

2,669,322

(12,129)

(12,129)

(12,129)

(10,167,252)

(49,946)

(49,946)
(10,167,252)

(49,946)
(10,167,252)

$(10,229,327)

Balance—December 31, 2008 . . . 14,274,884 $14,275 $106,636,653

$

— $(77,474,982)

$(56,789)

$ 29,119,157

See accompanying notes to consolidated financial statements.

70

ATRICURE, INC. AND SUBSIDIARY

CONSOLIDATED STATEMENTS OF CASH FLOW
YEARS ENDED DECEMBER 31, 2008, 2007 and 2006

2008

2007

2006

Cash flows from operating activities:

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $(10,167,252) $(11,253,066) $(13,717,275)
Adjustments to reconcile net loss to net cash used in operating

activities:

Depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of deferred financing costs . . . . . . . . . . . . . . . . . .
Amortization of intangible assets . . . . . . . . . . . . . . . . . . . . . . . .
Loss (gain) on disposal of equipment . . . . . . . . . . . . . . . . . . . . .
Change in provision for allowance for doubtful accounts . . . . .
Share-based compensation expense . . . . . . . . . . . . . . . . . . . . . .

2,400,704
113,678
281,500
151,518
20,440
2,671,003

2,030,737
48,924
242,125
91,396
(132,308)
1,892,217

1,622,378
48,925
214,000
(20,000)
81,420
1,045,768

Changes in assets and liabilities, excluding effects of acquired

business:

Accounts receivable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accounts payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other non-current assets and non-current liabilities . . . . . . . . . .

609,337
(1,149,231)
(342,710)
597,461
(745,874)
(150,514)

(561,132)
(1,380,956)
(204,052)
1,172,689
(321,471)
259,269

(1,778,699)
(1,254,259)
(402,408)
2,233,952
(618,310)
78,778

Net cash used in operating activities . . . . . . . . . . . . . . . . .

(5,709,940)

(8,115,628)

(12,465,730)

Cash flows from investing activities:

Purchases of property & equipment . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds from sale of property & equipment . . . . . . . . . . . . . . . . . . .
Purchases of available-for-sale securities . . . . . . . . . . . . . . . . . . . . . .
Maturities of available-for-sale securities . . . . . . . . . . . . . . . . . . . . . .
Change in restricted cash and cash equivalents . . . . . . . . . . . . . . . . .
Cash paid for acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(1,747,590)

(3,044,546)

—

(1,900,756)
8,894,670
(6,000,000)
(417,292)

—

(8,208,668)
5,808,000
—

(3,341,349)

(1,680,520)
20,000
(6,289,837)
8,065,000
—
—

Net cash (used in) provided by investing activities . . . . . .

(1,170,968)

(8,786,563)

114,643

Cash flows from financing activities:

Payments on debt and capital leases . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds from borrowings of debt . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . .
Payment of debt fees and premium on retirement of debt
Proceeds from issuance of common stock under employee stock

purchase plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net proceeds from sale of stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds from stock option exercises . . . . . . . . . . . . . . . . . . . . . . . . .

(393,675)

(369,835)

(721,917)
6,000,000
(340,932)

—
—

103,640
—
239,873

—
15,246,941
174,942

—
—

—
—
92,470

Net cash provided by (used in) financing activities . . . . . .

5,280,664

15,028,208

(277,365)

Effect of exchange rate changes on cash . . . . . . . . . . . . . . . . . . . . . . . . . .

48,043

(15,748)

85,887

Net decrease in cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . .
Cash and cash equivalents—beginning of period . . . . . . . . . . . . . . . . . . . .

(1,552,201)
13,000,652

(1,889,731)
14,890,383

(12,542,565)
27,432,948

Cash and cash equivalents—end of period . . . . . . . . . . . . . . . . . . . . . . . . . $ 11,448,451 $ 13,000,652 $ 14,890,383

Supplemental cash flow information:

Cash paid for income taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $
Cash paid for interest
Non-cash investing and financing activities:

— $
127,656 $

— $
72,951 $

51,534
159,626

Purchases of property and equipment in current liabilities . . . . $
Unsecured note payable in connection with the acquisition . . . . $
Assets acquired through capital lease . . . . . . . . . . . . . . . . . . . . . $

21,036 $
— $
102,197 $

94,179 $
417,292 $
— $

274,784
—
—

See accompanying notes to consolidated financial statements.

71

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of the Business—AtriCure, Inc. (the “Company”) was incorporated in the State of Delaware on

October 31, 2000, to focus on the surgical treatment of atrial fibrillation (“AF”). AF is a rapid, irregular
quivering of the upper chambers of the heart. The Company sells its medical devices to hospitals and medical
centers in the United States and internationally. International sales were $8,338,932, $6,591,278 and $4,158,939
in 2008, 2007, and 2006, respectively.

Principles of Consolidation—The consolidated financial statements include the accounts of the Company

and AtriCure Europe B.V., the Company’s wholly owned subsidiary incorporated in the Netherlands. All
significant intercompany accounts and transactions have been eliminated in consolidation.

Cash and Cash Equivalents—The Company considers highly liquid investments with maturities of three

months or less at the date of acquisition as cash equivalents in the accompanying consolidated financial
statements.

Short-Term Investments—The Company primarily invests in U.S. Government securities, corporate notes,

corporate bonds, medium term notes and commercial paper. The Company classifies all investments as
available-for-sale. Such investments are recorded at fair value, with unrealized gains and losses recorded as a
separate component of stockholders’ equity. The Company recognizes gains and losses when these securities are
sold using the specific identification method. The Company did not have any investments outstanding at
December 31, 2008.

Revenue Recognition—Revenues are generated primarily from the sale of the Company’s disposable
surgical devices. Pursuant to the Company’s standard terms of sale, revenues are recognized when title to the
goods and risk of loss transfers to customers and there are no remaining obligations that will affect the
customers’ final acceptance of the sale. Generally, the Company’s standard terms of sale define the transfer of
title and risk of loss to occur upon shipment to the respective customer. The Company generally does not
maintain any post-shipping obligations to the recipients of the products. Typically, no installation, calibration or
testing of this equipment is performed by the Company subsequent to shipment to the customer in order to render
it operational. Product revenues include shipping and handling revenues of $757,722, $468,377 and $242,259 in
2008, 2007, and 2006, respectively. Cost of freight for shipments made to customers is included in cost of
revenues. Sales and other value-added taxes collected from customers and remitted to governmental authorities
are excluded from product revenues. The Company sells its products primarily through a direct sales force and
through AtriCure Europe B.V. Terms of sale are generally consistent for both end-users and distributors and
payment terms are generally net 30 days for end-users and net 60 days for distributors.

The Company complies with the Securities and Exchange Commission (“SEC”) Staff Accounting Bulletin
No. 101, “Revenue Recognition in Financial Statements” (“SAB 101”), as amended by SAB 104. SAB 101 sets
forth guidelines on the timing of revenue recognition based upon factors such as passage of title, installation,
payment terms and ability to return products. The Company recognizes revenue when all of the following criteria
are met: (i) persuasive evidence that an arrangement exists; (ii) delivery of the products and/or services has
occurred; (iii) the selling price is fixed or determinable; and (iv) collectability is reasonably assured.

Sales Returns and Allowances—The Company maintains a provision for sales returns and allowances as a

result of defective or damaged products or when price reductions are given to customers. In 2008 and 2007
estimates were made based primarily on a specific identification basis. In 2006, no provision for sales returns and
allowances was recorded. Increases to the provision result in a reduction of revenues. The Company expects to
continue to refine this methodology utilized to estimate this provision as it accumulates additional historical data
and experience.

72

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Allowance for Uncollectible Accounts Receivable—The Company systematically evaluates the

collectability of accounts receivable and determines the appropriate reserve for doubtful accounts. In determining
the amount of the reserve, the Company considers aging of account balances, historical credit losses, customer-
specific information and other relevant factors. Increases to the allowance for doubtful accounts results in a
corresponding expense. The Company reviews accounts receivable and adjusts the allowance based on current
circumstances and charges off uncollectible receivables against the allowance when all attempts to collect the
receivable have failed.

Inventories—Inventories are stated at the lower of cost or market using the first-in, first-out (“FIFO”) cost

method and consist of raw materials, work in process, and finished goods. Reserves are estimated for excess,
slow moving and obsolete inventory as well as inventory with a carrying value in excess of its net realizable
value. Write-offs are recorded when a product is destroyed. The Company reviews inventory on hand at least
quarterly and records provisions for excess and obsolete inventory based on several factors including current
assessment of future product demand, anticipated release of new products into the market, historical experience
and product expiration. The Company’s industry is characterized by rapid product development and frequent new
product introductions. Uncertain timing of product approvals, variability in product launch strategies, product
recalls and variation in product utilization all impact the estimates related to excess and obsolete inventory.

Property and Equipment—Property and equipment is stated at cost, less accumulated depreciation.
Depreciation is computed on the straight-line method for financial reporting purposes over the estimated useful
lives of the assets. The estimated useful life by major asset category is the following: machinery and equipment
is three to seven years, computer and other office equipment is three years, furniture and fixtures is three to seven
years, and leasehold improvements and leased equipment under a capital lease are the shorter of their useful life
or remaining lease term. Maintenance and repair costs are expensed as incurred.

Included in property and equipment are generators and other capital equipment (such as the Company’s
ASB, or switch box) that are loaned at no cost to direct customers who use the Company’s disposable products.
These generators are depreciated over three years and such depreciation is included in cost of revenues. The total
of such depreciation was $1,069,135, $801,520 and $681,176 in 2008, 2007, and 2006, respectively.

Impairment of Long-Lived Assets (Other than Goodwill)—The Company reviews property and equipment

and definite-lived intangibles for impairment using its best estimates based on reasonable and supportable
assumptions and projections in accordance with Statement of Financial Accounting Standards (“SFAS”) No. 144,
“Accounting for the Impairment or Disposal of Long-Lived Assets.” The Company recorded a charge within cost
of revenues of $151,518 in 2008 for the impairment of fixed assets and machinery and equipment related to
discontinued product lines. In 2007, the Company recorded a charge of $91,396 for the impairment of obsolete
machinery and equipment and tooling. The Company did not recognize any impairment of long-lived assets in
2006.

Goodwill and Intangible Assets—As of December 31, 2008 the Company had $6,812,389 in goodwill,
which represents the excess of costs over the fair value of the net assets acquired in business combinations. The
Company tests its goodwill for impairment annually during the fourth quarter, or more frequently if impairment
indicators are present, to determine if the fair value of the business can support the amount of goodwill. The
goodwill tests include discounted cash flow models and a market valuation approach. The discounted cash flow
models include assumptions about future market conditions and operating results. If an impairment test indicates
the fair value cannot support the amount of goodwill recorded, the Company will be required to record a
goodwill impairment charge. As a result, the value of the assets could be significantly reduced, which would
increase operating expenses and reduce net income for the period in which the charge occurs. As of
December 31, 2008 there was no indication that an impairment existed, and the Company did not recognize any

73

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

impairment during 2008, 2007 or 2006. Subsequent to December 31, 2008 the Company’s market capitalization
dropped and has been less than its recorded net book value, which could be an indicator that an impairment
exists. The Company anticipates testing its goodwill for impairment during the first quarter of 2009, which could
result in a partial or full impairment of goodwill.

Intangible assets with determinable useful lives are amortized on a straight line basis over the estimated

periods benefited.

Restricted Cash and Cash Equivalents—The first $6,000,000 of availability under the Company’s
revolving credit facility is available in $2,000,000 increments, tied to a corresponding balance deposited in a
restricted securities account. The Company will be allowed, provided there are no events of default, to decrease
and increase the account value in the restricted securities account in its sole discretion, thereby correspondingly
decreasing or increasing the revolving credit availability between $2,000,000 and $6,000,000 in $2,000,000
increments. As of December 31, 2008, $6,000,000 had been borrowed under the revolving credit facility and
$6,000,000 was held as restricted cash and cash equivalents. Revolving credit availability between $6,000,000
and $10,000,000 also requires a cash and cash equivalent to borrowing ratio of not less than 1.25 to 1.0.

Grant Income—The Company receives research grants, which are recognized as funds are expended and

not as awarded by awarding agencies.

Income Taxes—Income taxes have been computed using the asset and liability method in accordance with

SFAS 109 “Accounting for Income Taxes” under which deferred income taxes are provided for the temporary
differences between the financial reporting basis and the tax basis of the Company’s assets and liabilities.
Deferred taxes are measured using provisions of currently enacted tax laws. A valuation allowance against
deferred tax assets is recorded when it is more likely than not that such assets will not be fully realized. Tax
credits are accounted for as a reduction of income taxes in the year in which the credit originates.

The Company’s estimate of the valuation allowance for deferred tax assets requires it to make significant

estimates and judgments about its future operating results. The Company’s ability to realize the deferred tax
assets depends on its future taxable income as well as limitations on their utilization. A deferred tax asset is
reduced by a valuation allowance if it is more likely than not that some portion or all of the deferred tax asset will
not be realized prior to its expiration. The projections of the Company’s operating results on which the
establishment of a valuation allowance is based involve significant estimates regarding future demand for the
Company’s products, competitive conditions, product development efforts, approvals of regulatory agencies and
product cost. If actual results differ from these projections, or if the Company’s expectations of future results
change, it may be necessary to adjust the valuation allowance.

Net Loss Per Share—Basic net loss per share is computed by dividing the net loss available to common

stockholders by the weighted average number of common shares outstanding during the period. Since the
Company has experienced net losses for all periods presented, net loss per share excludes the effect of 2,791,203,
2,296,035 and 1,906,928 options, restricted stock and warrants in 2008, 2007, and 2006, respectively, because
such options, restricted stock and warrants are anti-dilutive. Therefore the number of shares calculated for basic
net loss per share is also used for the diluted net loss per share calculation.

74

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Accumulated Other Comprehensive Income—Other comprehensive income consisted of the following:

Unrealized
Gains (Losses)
on Investments

Balance as of December 31, 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current-period change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

Balance as of December 31, 2006 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current-period change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

826
3,960

4,786
7,343

Balance as of December 31, 2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current-period change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12,129
(12,129)

Foreign
Currency
Translation
Adjustment

$ —
85,887

85,887
(92,730)

(6,843)
(49,946)

Other
Comprehensive
Income

$

826
89,847

90,673
(85,387)

5,286
(62,075)

Balance as of December 31, 2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ —

$(56,789)

$(56,789)

Foreign Currency Transaction Gain—The Company recorded foreign currency transaction (losses) gains

of ($64,176) and $246,562 for the year ended December 31, 2008 and 2007, respectively, in connection with
partial settlements of its intercompany payable balance with its subsidiary.

Research and Development—Research and development costs are expensed as incurred. These costs
include compensation and other internal and external costs associated with the development and research related
to new products or concepts, preclinical studies, clinical trials and cost of products used in trials and tests.

Share-Based Employee Compensation—On January 1, 2006, the Company adopted Statement of Financial

Accounting Standards No. 123 (revised 2004), “Share-Based Payment,” (“SFAS 123(R)”) which requires the
measurement and recognition of compensation expense for all share-based payment awards made to employees
and directors, including employee stock options, restricted stock, performance shares and employee stock
purchases related to an employee stock purchase plan, based on estimated fair values. SFAS 123(R) supersedes
the Company’s previous accounting under Accounting Principles Board Opinion No. 25, “Accounting for Stock
Issued to Employees” (“APB 25”) for periods beginning in 2006. In March 2005, the SEC issued Staff
Accounting Bulletin No. 107 (“SAB 107”) relating to SFAS 123(R). The Company has applied the provisions of
SAB 107 in its adoption of SFAS 123(R).

The Company adopted SFAS 123(R) using the modified prospective transition method. In accordance with
the modified prospective transition method stock-based compensation expense recognized under SFAS 123(R)
for the years ended December 31, 2008, 2007 and 2006 was $2,669,322, $1,510,361 and $1,258,124, respectively
on a before and after tax basis.

SFAS 123(R) requires companies to estimate the fair value of share-based payment awards on the date of
grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is
recognized as expense over the requisite service periods in the Company’s Consolidated Statement of Operations.
The expense has been reduced for estimated forfeitures. SFAS 123(R) requires forfeitures to be estimated at the
time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates.

The Company estimates the fair value of options on the date of grant using the Black-Scholes option-pricing

model (“Black-Scholes model”). The Company’s determination of fair value of share-based payment awards on
the date of grant using an option-pricing model is affected by the Company’s stock price, as well as assumptions
regarding a number of highly complex and subjective variables. These variables include but are not limited to the
Company’s and the peer group’s expected stock price volatility over the term of the awards and actual and
projected employee stock option exercise behaviors.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The Company estimates the fair value of restricted stock and performance share awards based upon the
grant date closing market price of the Company’s common stock. The Company’s determination of fair value is
affected by the Company’s stock price as well as assumptions regarding the number of shares expected to be
granted and, in the case of performance shares, the likelihood that the performance measures will be achieved.

The Company also has an employee stock purchase plan (“ESPP”) which is available to all eligible

employees as defined in the Plan. Under the ESPP, shares of the Company’s common stock may be purchased at
a discount. The Company estimates the number of shares to be purchased under the Plan and records
compensation expense based upon the fair value of the stock at the beginning of the purchase period using the
Black-Scholes model.

Certain of our share-based payment arrangements are outside the scope of SFAS No. 123(R) and are subject

to Emerging Issues Task Force (“EITF”) Issue No. 00-19, “Accounting for Derivative Financial Instruments
Indexed to, and Potentially Settled in, a Company’s Own Stock,” which requires vested stock options held by
certain non-employee consultants to be accounted for as liability awards until these awards are exercised or
forfeited. The fair value of these awards is remeasured at each financial statement date until the awards are
settled or expire. During the year ended December 31, 2008, $522,993 of income was recorded as a result of the
remeasurement of the fair value of these awards compared with $227,421 of expense in 2007. As of
December 31, 2008 and 2007, respectively, options to acquire 54,660 and 83,735 shares of common stock held
by non-employee consultants remained unexercised and a liability of $40,368 and $660,827 was included in
accrued liabilities in the Consolidated Balance Sheets.

On November 10, 2005 the Financial Accounting Standards Board (“FASB”) issued FASB Staff Position
No. FAS 123(R)-3 “Transition Election Related to Accounting for Tax Effects of Share-Based Payment Awards”
(the “FASB Staff Position”). The Company has elected to adopt the alternative transition method provided in the
FASB Staff Position for calculating the tax effects of stock-based compensation pursuant to SFAS 123(R). The
alternative transition method includes simplified methods to establish the beginning balance of the additional
paid-in capital pool (“APIC pool”) related to the tax effects of employee stock-based compensation and to
determine the subsequent impact on the APIC pool and Consolidated Statements of Cash Flows of the tax effects
of employee stock-based compensation awards that are outstanding upon adoption of SFAS 123(R).

Use of Estimates—The preparation of the financial statements in conformity with accounting principles

generally accepted in the United States requires management to make estimates and assumptions that affect the
reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the
financial statements and the reported amounts of revenues and expenses during the reporting period. Actual
results could differ from those estimates.

Reclassification—The Company reclassified certain prior period financial statement balances to conform to

the current year presentation, including certain reclassifications from changes in assets and liabilities within the
operating section of the Consolidated Statements of Cash Flows to reconcile net loss to net cash used in operating
activities.

Accounting for Business Combinations—In accounting for business combinations, the Company applies

the accounting requirements of Statement of Financial Accounting Standards No. 141, “Business Combinations”
(“SFAS 141”) which requires the recording of net assets of acquired businesses at fair value. In developing
estimates of the fair value of acquired assets and assumed liabilities, the Company analyzes a variety of factors
including market data, estimated future cash flows of the acquired operations, industry growth rates, current
replacement costs and market rate assumptions for contractual obligations. This valuation requires significant
estimates and assumptions, especially with respect to the valuation of intangible assets.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Fair Value Disclosures—The fair value of the Company’s financial instruments, including cash and cash
equivalents, accounts receivable, restricted cash and cash equivalents, other assets, accounts payable, accrued
expenses, other liabilities and variable interest rate debt, approximate their fair values.

2. RECENT ACCOUNTING PRONOUNCEMENTS

In December 2007 the FASB issued SFAS No. 141(R), which replaces SFAS 141. SFAS 141(R) establishes

principles and requirements for how an acquirer in a business combination recognizes and measures in its
financial statements the identifiable assets acquired, the liabilities assumed, and any controlling interest;
recognizes and measures the goodwill acquired in the business combination or a gain from a bargain purchase;
and determines what information to disclose to enable users of the financial statements to evaluate the nature and
financial effects of the business combination. SFAS 141(R) is to be applied prospectively to business
combinations for which the acquisition date is on or after an entity’s fiscal year that begins after December 15,
2008, except for certain tax adjustments for prior business combinations and will apply to business combinations
completed on or after that date.

In March 2008 the FASB issued SFAS No. 161 “Disclosures about Derivative Instruments and Hedging
Activities—an amendment of SFAS 133” (“SFAS No. 161”). SFAS No. 161 is intended to improve financial
reporting about derivative instruments and hedging activities by requiring enhanced disclosures to enable
investors to better understand their effects on an entity’s financial position, financial performance and cash flows.
This statement will be applicable to the Company on January 1, 2009. The Company does not believe the
adoption of SFAS 161 will have a material impact on its disclosures.

In April 2008 the FASB issued FSP No. FAS 142-3, “Determination of the Useful Life of Intangible Assets”
(“FSP No. FAS 142-3”). FSP No. FAS 142-3 amends the factors that should be considered in developing renewal
or extension assumptions used to determine the useful life of a recognized intangible asset under SFAS No. 142,
“Goodwill and Other Intangible Assets.” The intent of this FSP is to improve the consistency between the useful
life of a recognized intangible asset under SFAS No. 142 and the period of expected cash flows used to measure
the fair value of the asset under SFAS No. 141(R) and other GAAP. FSP No. FAS 142-3 is effective for fiscal
years, and interim periods within those fiscal years, beginning after December 15, 2008. The Company does not
expect the adoption of FSP No. FAS 142-3 to have a material impact on its financial statements.

In May 2008 the FASB issued SFAS No. 162, “The Hierarchy of Generally Accepted Accounting

Principles” (“SFAS No. 162”). SFAS No. 162 identifies the sources of accounting principles and the framework
for selecting the principles used in the preparation of financial statements of nongovernmental entities that are
presented in conformity with GAAP in the United States. SFAS No. 162 is effective 60 days following approval
by the Securities and Exchange Commission (“SEC”) of the Public Company Accounting Oversight Board
amendments to AU Section 411, “The Meaning of ‘Present Fairly in Conformity With Generally Accepted
Accounting Principles.’” The Company does not expect the adoption of SFAS No. 162 to have a material impact
on its financial statements.

Effective January 1, 2008 the Company adopted EITF 07-3, “Accounting for Nonrefundable Advance
Payments for Goods or Services Received for Use in Future Research and Development Activities” (“EITF
07-3”). EITF 07-3 requires that nonrefundable advance payments for goods or services that will be used or
rendered for future research and development activities be deferred and capitalized and recognized as an expense
as the goods are delivered or the related services are performed. The adoption did not have a material impact on
the Company’s consolidated results of operations or financial condition.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Effective January 1, 2008 the Company adopted SFAS No. 159 “The Fair Value Option for Financial Assets
and Financial Liabilities” (“SFAS 159”). SFAS 159 allows an entity the irrevocable option to elect fair value for
the initial and subsequent measurement for specified financial assets and liabilities on a contract-by-contract
basis. The Company did not elect to adopt the fair value option under this Statement.

3. FAIR VALUE

Effective January 1, 2008 the Company adopted SFAS No. 157, “Fair Value Measurements” (“SFAS 157”).

In February 2008 the FASB issued FASB Staff Position No. FAS 157-2, “Effective Date of FASB Statement
No. 157” which provides a one year deferral of the effective date of SFAS 157 for non-financial assets and
non-financial liabilities, except those that are recognized or disclosed in the financial statements at fair value at
least annually. Therefore, the Company has adopted the provisions of SFAS 157 with respect to its financial
assets and liabilities only. SFAS 157 defines fair value, establishes a framework for measuring fair value under
generally accepted accounting principles and enhances disclosures about fair value measurements. Fair value is
defined under SFAS 157 as the exchange price that would be received for an asset or paid to transfer a liability
(an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction
between market participants on the measurement date. Valuation techniques used to measure fair value under
SFAS 157 must maximize the use of observable inputs and minimize the use of unobservable inputs. The
standard describes a fair value hierarchy based on three levels of inputs, of which the first two are considered
observable and the last unobservable, that may be used to measure fair value which are the following:

•

•

•

Level 1—Quoted prices in active markets for identical assets or liabilities.

Level 2—Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted
prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are
observable or can be corroborated by observable market data for substantially the full term of the assets
or liabilities.

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant
to the fair value of the assets or liabilities.

In accordance with SFAS 157, the following table represents the Company’s fair value hierarchy for its

financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2008:

Quoted Prices in
Active Markets for
Identical Assets
(Level 1)

Significant Other
Observable Inputs
(Level 2)

Significant Other
Unobservable
Inputs
(Level 3)

Assets:
Money market funds . . . . . . .

Total assets . . . . . . . . . . . . . .

$—

$15,570,883

$15,570,883

$ —

Total

$15,570,883

$15,570,883

Liabilities:
Derivative instruments . . . . .

Total liabilities . . . . . . . . . . .

$—

$

—

$40,369

$40,369

$

$

40,369

40,369

Certain of the Company’s share-based payment arrangements are outside the scope of SFAS 123(R) and are

subject to Emerging Issues Task Force (“EITF”) Issue No. 00-19, “Accounting for Derivative Financial
Instruments Indexed to, and Potentially Settled in, a Company’s Own Stock” which requires vested stock options
held by certain non-employee consultants to be accounted for as liability awards until these awards are exercised
or forfeited. The fair value of these awards is remeasured at each financial statement date until the awards are

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

settled or expire. In calculating the fair value of the options they are estimated on the grant date using the Black-
Scholes model subject to change in stock price utilizing assumptions of risk-free interest rate, contractual life of
option, expected volatility, weighted average volatility and dividend yield. Due to the lack of certain observable
market quotes the Company utilizes valuation models that rely on some Level 3 inputs. Specifically, due to the
Company’s limited trading history, the Company used an equal weighting of both the Company’s implied
volatility and the implied volatility of a group of comparable companies in determining the Company’s volatility.

Fair Value Measurements
Using Significant Other
Unobservable Inputs
(Level 3)

Derivative Instruments

Beginning Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 660,827

Total gains (realized/unrealized)

Included in earnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchases, issuances and settlements . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(522,992)
(97,466)

Ending Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 40,369

The amount of total gains for the period included in earnings (or changes in
net assets) attributable to the change in unrealized gains or losses relating
to assets still held at reporting date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 522,992

4. INVESTMENTS

Investments as of December 31, 2007 consisted of the following:

U.S. Government Securities . . . . . . . . . . . . . . . . . . . . . . . . . .
Medium-term notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Corporate notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Commercial paper
Corporate bonds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cost Basis

$1,497,662
1,494,852
1,800,936
797,635
1,402,827

Unrealized
Gain

$ 3,283
568
902
45
7,331

Fair Value

$1,500,945
1,495,420
1,801,838
797,680
1,410,158

$6,993,912

$12,129

$7,006,041

The Company has not experienced any significant realized gains or losses on its investments in the periods

presented in the Consolidated Statements of Operations and no investments were outstanding at December 31,
2008.

5. BUSINESS COMBINATIONS

On August 7, 2007 the Company acquired the Frigitronics CCS-200 product line for use in cardiovascular
cryosurgery, which includes a console and a variety of reusable probes, from CooperSurgical, Inc. (“Cooper”),
for an aggregate purchase price, including acquisition-related costs, of $3,758,641. Of the purchase price
$3,244,244 was paid in cash at closing, funded from cash on-hand, and $417,292 was payable under an
unsecured promissory note, which was paid in full in January 2008. The acquisition complemented the
Company’s open-heart product offering. The purchase price allocation resulted in goodwill of $2,971,552, which
is deductible for tax purposes. Intangible assets acquired were $320,000, consisting of $220,000 for use of a trade
name and $100,000 related to a non-compete arrangement. The Company also incurred legal and professional
expenses associated with the acquisition of $97,105.

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The purchase price is as follows:

Cash paid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquisition-related costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$3,661,536
97,105

Total purchase price . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$3,758,641

The following table summarizes the fair values of the assets acquired and liabilities assumed on August 7,

2007. The allocation of the excess purchase price was based upon estimates and assumptions.

Assets:
Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Property and equipment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill
Intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Assets acquired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 451,011
17,578
2,971,552
320,000

3,760,141
1,500

Net assets acquired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$3,758,641

6. INTANGIBLE ASSETS

Intangible assets with definite lives are amortized over their estimated useful lives. The following table

provides a summary of the Company’s intangible assets with definite lives:

Proprietary
manufacturing
technology

Non-compete

agreement Tradename

Total

Net carrying amount as of December 31, 2005 . . . . . .
Amortization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 986,778
(214,000)

$ — $ — $ 986,778
— (214,000)

—

Net carrying amount as of December 31, 2006 . . . . . .
Gross carrying amount recorded . . . . . . . . . . . . . . . . .
Amortization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Net carrying amount as of December 31, 2007 . . . . . .
Amortization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

772,778
—

(214,000)

558,778
(214,000)

—
100,000
(5,208)

94,792
(12,500)

— 772,778
320,000
(242,125)

220,000
(22,917)

197,083
(55,000)

850,653
(281,500)

Net carrying amount as of December 31, 2008 . . . . . .

$ 344,778

$ 82,292 $142,083 $ 569,153

Amortizable intangible assets are being amortized over eight years for a non-compete arrangement, four

years for tradename usage and five years for proprietary manufacturing technology. For the years ended
December 31, 2008, 2007 and 2006, amortization expense related to intangible assets with definite lives was
$281,500, $242,125 and $214,000, respectively.

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Future amortization expense related to intangible assets with definite lives is projected as follows:

Year

2009 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2013 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2014 and thereafter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Amortization

$281,500
198,278
44,583
12,500
12,500
19,792

$569,153

The changes in the net carrying amount of goodwill for the years ended December 31, 2008 and 2007 are as

follows:

Net carrying amount as of December 31, 2006 . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill amount recorded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$3,840,837
2,922,422

Net carrying amount as of December 31, 2007 . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill amount recorded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6,763,259
49,130

Net carrying amount as of December 31, 2008 . . . . . . . . . . . . . . . . . . . . . . . . . .

$6,812,389

The additional goodwill recorded in 2008 relates to an increase in inventory reserves related to the August 7,

2007 Cooper acquisition.

7. INVENTORIES

Inventories consisted of the following at December 31:

Raw material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Work in process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finished goods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reserve for obsolescence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$2,518,226
425,641
3,601,270
(183,895)

$1,943,041
891,798
2,548,174
(116,858)

Inventories, net

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$6,361,242

$5,266,155

2008

2007

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

8. PROPERTY AND EQUIPMENT

Property and equipment consisted of the following at December 31:

2008

2007

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Machinery and equipment
Computer and other office equipment
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Furniture and fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leasehold improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment under capital lease . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Construction in progress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 7,064,477
1,535,249
459,103
424,582
102,197
48,507

$ 6,783,579
1,218,619
447,749
388,304
82,424
158,890

Total

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Less accumulated depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9,634,115
(5,951,296)

9,079,565
(4,613,505)

Property and equipment, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 3,682,819

$ 4,466,060

9. ACCRUED LIABILITIES

Accrued liabilities consisted of the following at December 31:

Accrued commissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued bonus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liability for vested non-employee options . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued vacation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued severance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other accrued liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2008

2007

$ 847,872
69,525
40,369
232,577
579,077
1,153,143

$1,157,124
589,673
660,827
327,526
102,266
925,039

Total

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$2,922,563

$3,762,455

10. FINANCING ARRANGEMENTS

Long-term debt and capital leases consisted of the following at December 31:

Credit facility, due 2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Credit facility, due 2009 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Capital leases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unsecured promissory note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total debt and capital leases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Less: Current maturities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2008

$6,000,000
—
70,609
—

6,070,609
34,004

$

2007

—
679,007
11,322
417,292

1,107,621
825,146

Total long-term debt and capital leases . . . . . . . . . . . . . . . . . . . . . . . .

$6,036,605

$ 282,475

On July 1, 2008 the Company entered into a two-year credit facility with National City Bank. On

December 31, 2008, National City Bank merged with PNC Bank. The credit facility matures on July 1, 2010 and
is secured by all of the Company’s assets and property, tangible and intangible.

The credit facility provides for a revolving credit facility of up to $10,000,000 and a letter of credit facility
for an amount equal to the lesser of: (i) $1,500,000 or (ii) the availability under the revolving credit facility. The

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Company must maintain all of its primary deposit accounts with National City Bank or a subsidiary of National
City Bank, and was required to deliver cash and/or money market funds having an aggregate value of at least
$2,000,000 which is to be held in a restricted securities account. This balance will remain in the restricted
account until all of the Company’s obligations under the credit facility are paid in full.

The first $6,000,000 of availability under the revolving credit facility is available in $2,000,000 increments,

tied to a corresponding balance deposited in the restricted securities account. The Company will be allowed,
provided there are no events of default, to decrease and increase the account value in the restricted securities
account in its sole discretion, thereby correspondingly decreasing or increasing the revolving credit availability
between $2,000,000 and $6,000,000 in $2,000,000 increments. Revolving credit availability between $6,000,000
and $10,000,000 also requires a cash and cash equivalent to borrowing ratio of not less than 1.25 to 1.0. The
revolving credit availability is also subject at all times to adequate levels of eligible accounts receivables and
inventory, among other factors.

Interest under the credit facility accrues at one month LIBOR (London Interbank Offered Rate) plus

2.25% per annum or if one month LIBOR is unavailable, as provided under the credit agreement, then the interest
rate shall be a fluctuating rate equal to the prime rate publicly announced from time to time by National City
Bank. The effective borrowing rate at December 31, 2008 was 2.69%. For letters of credit, the Company will pay
a fee at a rate per annum equal to 1.50% on the amount available to be drawn under the letter of credit from the
issuance date (and, as applicable, each renewal date) up to the expiration date. During certain events of default
described in the credit agreement, the applicable interest rate increases by 2%.

The credit facility contains customary negative covenants, including limitations on liens, dividends,

investments and the incurrence of additional indebtedness, and customary affirmative covenants, including
reporting with respect to financial statements, receivables, inventory, material contracts and FDA inspections. In
addition, the credit facility contains a financial covenant that requires the Company’s loss before considering
interest, taxes, depreciation and amortization to be no more than $15,000,000 per annum. The credit facility also
contains customary events of default, including cross-defaults on the Company’s indebtedness in excess of
$250,000.

As of December 31, 2008, $6,000,000 was outstanding under the credit facility and $6,000,000 was held as

restricted cash and cash equivalents and reported as long-term liabilities and assets, respectively.

On July 2, 2008, as a condition to entering into the credit facility, the Company repaid in full its outstanding
indebtedness to Lighthouse Capital Partners V, L.P. The Company paid $713,032 to Lighthouse, which consisted
of outstanding principal, accrued interest and a final payment fee due at maturity.

The Company has a capital lease for computer equipment. As of December 31, 2008, the cost of the assets
under lease was $102,197. These assets are depreciated over the estimated useful life of the asset, which equals
the term of the lease. Accumulated amortization on the capital lease was $34,066 at December 31, 2008. The
Company previously had capital leases for machinery and equipment with a cost of $82,424. These assets were
fully depreciated as of December 31, 2008 and the lease was paid in full.

Maturities of long-term debt and capital leases are as follows:

Year

Amount

2009 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

34,004
6,036,605

Total maturities of long-term debt and capital leases . . . . . . . . . . . . . . . . .

$6,070,609

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11. COMMITMENTS AND CONTINGENCIES

Operating Leases

The Company leases various types of office, manufacturing and warehouse facilities and equipment under

noncancelable operating leases that expire at various terms through 2011. Future minimum lease payments under
non-cancelable operating leases are as follows:

Year

2009 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Amount

$429,720
91,337
8,675

Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$529,732

Rent expense was approximately $566,132, $568,574 and $502,451 in 2008, 2007, and 2006, respectively.

Royalty Agreement

On November 21, 2005 the Company entered into a royalty agreement, effective as of October 1, 2005, with

Randall K. Wolf, M.D., the co-inventor of the Lumitip dissector. Pursuant to the terms of the agreement, the
Company will pay to Dr. Wolf royalties based on revenue from sales of the Lumitip dissector and certain other
inventions, improvements or ideas, at royalty rates which range from 1.5% to 15% of such revenues. During the
term of the agreement the Company is required to pay Dr. Wolf a minimum of $50,000 in royalties per quarter
and up to an aggregate of $2,000,000 in royalties during the term of the agreement. The agreement terminates on
December 31, 2009; however, the Company and Dr. Wolf each have the right at any time to terminate the
agreement immediately for cause. Royalties earned by Dr. Wolf related to sales of the Lumitip dissector were
$200,000 for each of the years ended December 31, 2008 and 2007 and $234,000 for the year ended
December 31, 2006.

Purchase Agreement

On June 15, 2007 the Company entered into a purchase agreement with Micropace Pty Ltd Inc.,
(“Micropace”), which was amended in June 2008. Under the amended agreement, Micropace produced a
derivative of one of their products tailored for the cardiac surgical environment, known as the “Micropace
ORLab” for worldwide distribution by the Company. Pursuant to the terms of the amended agreement, in order
for the Company to retain exclusive distribution rights, the Company is required to purchase a minimum of 70
units during 2008 and 80 units each for 2009 and 2010. Units purchased in excess of yearly minimums in a year
reduce future minimum purchase requirements. In addition, the Company agreed to and purchased a minimum of
four ORLab product demonstration units in the first 12 months at an estimated cost of $40,000. During 2008, the
Company purchased 123 units and has 107 units remaining to purchase under the commitment in order to retain
exclusive distribution rights.

Life Support Technology, LST b.v.

In September of 2007 multiple proceedings between Life Support Technology, LST b.v., or L.S.T., a former

distributor of our products in Europe, and AtriCure, Inc. were settled. The settlement agreement provides for
AtriCure to pay LST €257,360 (euros) in 16 payments of €16,085, with the final payment due January 1, 2011. If
the U.S. Dollar to Euro conversion rate on any of the 16 payment due dates set forth in the agreement is less than
$1.36 to the Euro, we will owe LST additional compensation, up to a maximum of €28,310. As of December 31,
2008, $184,632 was recorded as a liability.

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Grant Rights and Obligations

On July 18, 2006 the Company entered into an agreement effective as of June 6, 2005 with The Cleveland
Clinic relating to the Company’s rights and obligations with respect to the publicly announced grants from the
State of Ohio for, among other things, the creation of an Atrial Fibrillation Innovation Center. Pursuant to the
terms of the agreement, the Company is required to supply personnel and materials to accomplish certain
research-related activities in connection with the grant and, over a four and one-half year period, the Company
will receive up to a total of approximately $900,000 for personnel and materials and The Cleveland Clinic will
acquire up to approximately $2,400,000 in capital equipment for the Company’s use in support of its
performance of the agreement. Over the period of the agreement, the Company is required to expend up to
approximately $7,700,000 for operating expenses and up to approximately $4,800,000 for capital expenses in
support of the agreement. The Company believes these amounts represent ordinary course expenditures that it
would have otherwise anticipated making.

The terms of the agreement specify the division of ownership of intellectual property developed in the
performance of the agreement and provide, among other things, that the Company will own all intellectual
property it develops alone and certain intellectual property that has jointly developed and it will have the option
to license certain intellectual property that is owned by The Cleveland Clinic and developed in the performance
of the agreement. The Company and The Cleveland Clinic may terminate the agreement at any time by giving 30
days’ prior written notice. The agreement was to terminate on December 31, 2008, but was amended to extend
the capital equipment and capital expenditure provisions through December 31, 2009. The Company and The
Cleveland Clinic may terminate the agreement at any time by giving 30 days’ prior written notice. Through
December 31, 2008, the Company has earned the entire $900,000 in support of operating expenses and
$2,300,000 in acquired capital equipment.

Legal

Class Action Lawsuits

The Company and certain of its current and former officers were named as defendants in a purported

securities class action lawsuit filed in the United States District Court for the Southern District of New York
(Levine v. AtriCure, Inc., Case No. 06 CV 14324 (United States District Court for the Southern District of New
York)). The suit alleges violations of the federal securities laws and seeks damages on behalf of purchasers of the
Company’s common stock during the period from the Company’s initial public offering in August 2005 through
February 16, 2006. The Company believes that the allegations are without merit and intends to vigorously defend
against them. The Company filed a motion to dismiss the lawsuit for lack of subject matter jurisdiction. This
motion was denied in September 2007, and a motion for reconsideration of that denial was denied in January
2009. The Company intends to vigorously defend this lawsuit.

On December 12, 2008 the Company and certain of its current executive officers were named in a putative
class action lawsuit captioned Halford vs. AtriCure, Inc., et al., filed in the U.S. District Court for the Southern
District of Ohio, Western Division. The plaintiff alleges violations of Sections10(b) and 20(a) of the Securities
Exchange Act of 1934 and Rule 10b-5 promulgated thereunder and seeks unspecified damages against the
Company and certain of its current executive officers. The plaintiff alleges, among other things, that the
defendants issued materially false and misleading statements that failed to disclose that the Company improperly
promoted certain products to physicians and improperly caused the filing of false claims for reimbursement. The
class period alleged runs from May 10, 2007 through October 31, 2008. The Company intends to vigorously
defend this lawsuit.

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Department of Justice Investigation

The Company received a letter on October 27, 2008 from the U.S. Department of Justice-Civil Division (the
“DOJ”) informing the Company that the DOJ was conducting an investigation for potential False Claims Act and
common law violations relating to the Company’s surgical ablation devices. Specifically, the letter states that the
DOJ is investigating the Company’s marketing practices utilized in connection with its surgical ablation system
to treat atrial fibrillation, a specific use outside the Federal Food and Drug Administration’s 510(k) clearance.
The letter also states that the DOJ is investigating whether AtriCure instructed hospitals to bill Medicare for
surgical ablation using incorrect billing codes. On November 3, 2008, the Company received a follow-up letter
from the DOJ outlining a request for documents, to which the Company has substantially complied. The
Company is cooperating with the investigation and continues to operate its business in the ordinary course.

The Company’s liability, if any, resulting from the DOJ investigation and the class action claims cannot be
estimated and as such the Company has not recorded any liability within the consolidated financial statements in
relation to these matters.

The Company may from time to time become a party to additional legal proceedings.

12. INCOME TAXES

Deferred income tax assets and liabilities are computed annually for differences between the financial
statement and tax bases of assets and liabilities that will result in taxable or deductible amounts in the future
based on enacted tax laws and rates applicable to the periods in which the differences are expected to affect
taxable income. Valuation allowances are established when necessary to reduce deferred tax assets to the amount
expected to be realized. Income tax expense or benefit is the tax payable or refundable for the period plus or
minus the change during the period in deferred tax assets and liabilities.

Deferred tax assets relate primarily to operating loss carryforwards, research and development credits and
equity compensation. The Company recorded a valuation allowance due to the uncertainty of when these assets
may be realized. The detail of deferred tax assets and liabilities at December 31 is as follows:

2008

2007

Deferred tax assets (liabilities):

Net operating loss carryforward . . . . . . . . . . . . . . . . . . . . . . . . . .
Research and development credit carryforward . . . . . . . . . . . . . .
Equity compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accruals and reserves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fixed assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other, net

$ 17,307,000
2,692,000
1,443,000
268,000
(204,000)
353,000
305,000
2,000

$ 14,458,000
2,978,000
857,000
191,000
(209,000)
158,000
486,000
43,000

Subtotal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22,166,000

18,962,000

Less valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(22,166,000)

(18,962,000)

Total

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

—

$

—

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The provision for income tax expense (benefit) is as follows:

Current income tax benefit
. . . . . . . . . . . . . . . . . . . . . . .
Deferred tax benefit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Increase in valuation allowance . . . . . . . . . . . . . . . . . . .

$

(57,252)
(3,204,000)
3,204,000

$

—

(4,325,000)
4,325,000

Total

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

(57,252)

$

—

$

$

—

(4,756,000)
4,756,000

—

2008

2007

2006

The Company has a federal net operating loss carryforward of approximately $47,194,000 which will begin

to expire in 2021. The Company also has state net operating loss carryforwards of approximately $21,287,000
which have varying expirations ranging from 5 years to 20 years. The Company also has a foreign net operating
loss carryforward of approximately $2,864,000 which has no expiration. Additionally, the Company has a
research and development credit carryforward of approximately $2,692,000 which will begin to expire in 2021.

The Company’s effective 2008 income tax rate differs from the federal statutory rate as follows:

Tax at statutory rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R&D credit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34.00% $(3,476,331)
206,376
(2.02)
3,204,151
(31.34)
8,552
(0.07)

Effective tax rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0.57% $

(57,252)

On January 1, 2007 the Company adopted the provisions of FIN 48. The Company examined its tax
positions and concluded that each meets the more-likely-than-not recognition threshold of FIN 48 and is
appropriately measured. Application of the provisions of FIN 48 therefore did not result in any change to the
Company’s tax account balances and the Company does not expect any significant unrecognized tax benefits to
arise over the next twelve months.

The Company currently has not had to accrue interest and penalties related to unrecognized tax benefits,
however when or if the situation occurs, the Company will recognize interest and penalties within the income tax
expense (benefit) line in the accompanying Consolidated Statements of Operations and within the related tax
liability line in the Consolidated Balance Sheets.

The Company files federal, state, and foreign income tax returns in jurisdictions with varying statutes of

limitations. Generally, all of the Company’s federal, state and foreign tax filings remain subject to examination
by the relevant tax authority until full utilization of net operating loss carryforwards. The Company’s foreign
income tax filings for the tax years 2007 and 2006 remain subject to examination.

13. CONCENTRATIONS

During fiscal 2008, 2007 and 2006, approximately 17.5%, 19.1% and 14.5%, respectively, of the

Company’s total net revenues were derived from its top ten customers. During 2008, 2007 and 2006 no customer
accounted for more than 10% of the Company’s revenues.

The Company maintains cash balances which at times exceed FDIC limits. As of December 31, 2008,

$1,700,031 of the cash balance was in excess of the FDIC limits.

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14. RELATED PARTY

The Company entered into a Consulting Agreement, dated as of January 1, 2007, with Michael D. Hooven,
the Company’s co-founder and also one of its directors. Under the terms of the agreement, Mr. Hooven provided
consulting services and advice to the Company with respect to the creation and development of new products and
product platforms relating to cardiac arrhythmias and the prevention or reduction of strokes using cardiac
devices. As consideration for his services and for assigning the rights to certain intellectual property as provided
for in the agreement, Mr. Hooven was paid $12,000 per month. The term of the consulting services portion of the
agreement was for one year and expired on December 31, 2007. The agreement contains certain non-compete
and non-solicitation provisions which expire on December 31, 2009.

15. EMPLOYEE BENEFIT PLANS

The Company sponsors the AtriCure, Inc. 401(k) Plan, a defined contribution plan covering substantially all

employees of AtriCure. Eligible employees may contribute up to 50% of their pre-tax annual compensation (up
to 15% prior to January 1, 2007). The Company has made matching contributions of 50% of the first 6% of
employee contributions to the Plan. Company matching contributions expensed during 2008, 2007 and 2006
were approximately $452,887, $430,910 and $396,700, respectively. Additional amounts may be contributed to
the Plan at the discretion of the Company’s board of directors. No such discretionary contributions have been
made during 2008, 2007 or 2006. The Plan was amended effective January 1, 2009 primarily to reflect
modifications to the definition of compensation and employee eligibility. Effective January 1, 2009 employer
contributions to the Plan were suspended.

16. EQUITY COMPENSATION PLANS

The Company has several share-based incentive plans: the 2001 Stock Option Plan (the “2001 Plan”),the
2005 Equity Incentive Plan (the “2005 Plan”) and the 2008 Employee Stock Purchase Plan (the “ESPP”). The
2001 plan is no longer used for granting incentives.

2005 Plan

Under the 2005 Plan, the Board of Directors may grant incentive stock options to employees and any parent

or subsidiary’s employees, and may grant nonstatutory stock options, restricted stock, stock appreciation rights,
performance units or performance shares to employees, directors and consultants of the Company and any parent
or subsidiary’s employees, directors and consultants. The administrator (which is made up of the Company’s
Board of Directors or a committee of the Board of Directors) has the power to determine the terms of any awards,
including the exercise price of options, the number of shares subject to each award, the exercisability of the
awards and the form of consideration.

Options granted under the 2001 and 2005 Plans generally expire 10 years from the date of grant. Options
granted from the 2001 plan are generally exercisable beginning one year from the date of grant in cumulative
yearly amounts of 25% of the shares granted. Options granted from the 2005 plan generally vest at a rate of 25%
on the first anniversary date of the grant and ratably each month thereafter. Certain options granted were
exercisable at the time of the grant and the underlying unvested shares are subject to the Company’s repurchase
rights as stated in the applicable plan agreement.

In 2008 the Company issued performance shares to certain employees to incent and reward them for the
achievement of specified performance metrics during 2009 and 2010 and the service period under the awards is
through December 31, 2010. The participant receives an award for a specified number of shares of the
Company’s common stock at the beginning of an award period, which entitle the participant to payment at the

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end of the award period based upon achievement of the specified metrics and completion of specified service
requirements. As of December 31, 2008 the Company has the potential to issue 499,000 common shares based
upon each participant meeting all of the specified metrics. In accordance with SFAS 123(R), the Company
estimates the number of shares to be granted based upon the probability that the performance and service metrics
will be achieved. The fair value of the estimated award is expensed over the award period. During 2008, the
Company recognized $141,050 of expense related to the performance shares. The probability of meeting the
specified metrics is reviewed quarterly and the estimated expense is adjusted in the current period.

During 2008, 161,893 shares of restricted stock were awarded under the Plans. This grant was made at a
weighted average grant date fair value of $2.15 per share and vests at various periods during 2009 and 2010. As
of December 31, 2008 all of these shares are under the restriction period.

As of December 31, 2008, 4,340,215 shares of common stock were reserved for issuance under the 2005

Plan. The shares authorized for issuance under the 2005 plan include (a) shares reserved but unissued under the
2001 Plan as of August 10, 2005, (b) shares returned to the 2001 Plan as the result of termination of options or
the repurchase of shares issued under such plan, and (c) annual increases in the number of shares available for
issuance on the first day of each year equal to the lesser of:

•

•

•

3.25% of the outstanding shares of common stock on the first day of the fiscal year;

825,000 shares; or

an amount the Company’s board of directors may determine.

On January 1, 2008, an additional 459,304 shares were authorized for issuance under the 2005 Equity

Incentive Plan representing 3.25% of the outstanding shares on this date.

Activity under the Plans was as follows:

Outstanding at January 1, 2008 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cancelled or forfeited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exercised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Weighted
Average
Remaining
Contractual
Term

Aggregate
Intrinsic
Value

Number of
Shares
Outstanding

2,296,035
660,230
(239,418)
(87,537)

Weighted
Average
Exercise
Price

$ 8.11
$ 9.99
$10.85
$ 2.74

Outstanding at December 31, 2008 . . . . . . . . . . . . . . . . . . . . . . . .

2,629,310

$ 8.51

Vested and expected to vest

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2,476,174

$ 8.41

Exercisable at December 31, 2008 . . . . . . . . . . . . . . . . . . . . . . . .

1,392,372

$ 7.02

6.99

6.88

5.55

$506,458

$506,458

$506,458

As of December 31, 2008 there were 1,050,998 shares available for future grants under the Plans. Effective
January 1, 2009 the Company’s Board of Directors approved an additional 463,934 shares for issuance under the
2005 Equity Incentive Plan, representing 3.25% of the outstanding shares on January 1, 2009.

The total intrinsic value of options exercised during the years ended December 31, 2008, 2007 and 2006 was
$770,381, $1,302,202 and $504,728, respectively. Due to the Company’s current tax position, no tax benefit was
recognized as a result of stock option exercises for the years ended December 31, 2008, 2007 and 2006.
Additionally, there was no impact on operating or financing activities in the Company’s Consolidated Statements

89

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

of Cash Flows for the years ended December 31, 2008, 2007 and 2006 as a result of the exercise of stock options,
other than the recognition of $239,873, $174,942 and $92,470 respectively, in cash proceeds as a result of stock
option exercises.

The exercise price per share of each option is equal to the fair market value of the underlying share on the

date of grant. The Company issues registered shares of common stock to satisfy stock option exercises.

As of December 31, 2008 there was $6,241,177 of unrecognized compensation costs ($5,934,358 relating to

stock options and $306,819 relating to restricted stock) related to non-vested share-based compensation
arrangements. This cost is expected to be recognized over a weighted-average period of 2.6 years for stock
options and 1.1 years for restricted stock.

Valuation and Expense Information Under FAS 123(R)

The following table summarizes stock-based compensation expense related to employee stock-based
compensation under SFAS 123(R) for the years ended December 31, 2008, 2007 and 2006. This expense was
allocated as follows:

Cost of revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Research and development expenses . . . . . . . . . . . . . . . . .
Selling, general and administrative expenses . . . . . . . . . . .

$ 151,270
346,698
2,171,354

$

85,902
243,246
1,181,213

$

55,364
184,534
1,018,226

Total

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$2,669,322

$1,510,361

$1,258,124

2008

2007

2006

In calculating compensation expense under SFAS 123(R), the fair value of the options is estimated on the

grant date using the Black-Scholes model including the following assumptions:

2008

2007

2006

Risk free interest rate . . . . . . . . . . . . .
Expected life of option (years) . . . . . .
Expected volatility of stock . . . . . . . . .
Weighted-average volatility . . . . . . . .
Dividend yield . . . . . . . . . . . . . . . . . . .

3.42 - 5.07%

1.89 - 3.54%
6.0 to 6.25
43.00 - 51.00% 42.00 - 45.00% 38.06 - 46.00%
44.08%
0.00%

38.92%
0.00%

44.31%
0.00%

4.44 - 5.14%

6.0

6.0

Due to our limited operating and trading history, volatility for 2008 is estimated based on an equal

weighting of both the Company’s trading history and other companies in the industry. For options granted prior
to 2008, volatility was estimated based on other companies in the industry. The risk-free interest rate assumption
is based upon the U.S. treasury yield curve at the time of grant for the expected option life. The simplified
method is utilized in determining the expected life of the option.

Based on the assumptions noted above, the weighted average estimated fair values of the options granted in

the years ended December 31, 2008, 2007 and 2006 were as follows:

Weighted average fair value of options granted . . . . . . . . . . . . . .

$4.71

$5.21

$3.92

2008

2007

2006

90

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Non-Employee Stock Compensation

The Company has issued nonstatutory common stock options to consultants to purchase shares of common
stock. Such options vest over a service period ranging from immediately to four years. After January 1, 2006, all
stock options were issued with a four year vesting period which vest at a rate of 25% on the first anniversary date
of the grant and ratably each month thereafter.

The fair value at the date of grant, which is subject to adjustment at each vesting date based upon the fair

value of the Company’s common stock, was determined using the Black-Scholes model with the following
assumptions:

Risk free interest rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected life of option (years) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected volatility of stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weighted-average volatility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dividend yield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2008

2007

6.0

3.45% 4.73%
10.0
43.00% 45.00%
43.00% 45.00%
0.00% 0.00%

No non-employee stock options were granted during 2006.

The values attributable to non-employee options have been amortized over the service period on a graded

vesting method and the vested portion of these options was re-measured at each vesting date.

Stock compensation (expense) income with respect to non-employee stock options totaled ($1,681),

($381,858) and $212,356 for the years ended December 31, 2008, 2007 and 2006, respectively.

Certain of the Company’s share-based payment arrangements are outside the scope of SFAS No. 123(R) and

are subject to Emerging Issues Task Force (“EITF”) Issue No. 00-19, : Accounting for Derivative Financial
Instruments Indexed to, and Potentially Settled in, a Company’s Own Stock” which requires vested stock options
held by certain non-employee consultants to be accounted for as liability awards until these awards are exercised
or forfeited. The fair value of these awards is remeasured at each financial statement date until the awards are
settled or expire. During the year ended December 31, 2008, $522,992 of income was recorded as a result of the
remeasurement of the fair value of these awards, compared to $227,421 of expense during the year ended
December 31, 2007. As of December 31, 2008 and 2007, respectively, options to acquire 54,660 and 83,735
shares of common stock held by non-employee consultants remained unexercised and a liability of $40,368 and
$660,827 was included in accrued liabilities in the Consolidated Balance Sheets.

Employee Stock Purchase Plan (ESPP)

Effective with the first offering period beginning July 1, 2008, the Company has established its 2008
Employee Stock Purchase Plan (“ESPP”) that is available to eligible employees as defined in the plan. The
Company has initially made available 300,000 shares for future issuance to employee participants in the ESPP.
Under the ESPP, shares of the Company’s common stock may be purchased at a discount (currently 15%) of the
lesser of the closing price of the Company’s common stock on the first trading day or the last trading day of the
offering period. The offering period (currently six months) and the offering price are subject to change.
Participants may purchase no more than twenty-five thousand dollars of the Company’s stock in a calendar year
and effective January 1, 2009, may not purchase more than 1,500 shares during an offering period. Beginning on
January 1, 2009 and on the first day of each fiscal year thereafter during the term of the ESPP, the number of
shares available for sale under the ESPP shall be increased by the lesser of (i) two percent (2%) of the
Company’s outstanding shares of Common Stock as of the close of business on the last business day of the prior

91

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

calendar year, not to exceed 600,000 shares, or (ii) a lesser amount determined by the Board of Directors. During
2008, 54,923 shares were purchased under the plan. At December 31, 2008, there were 245,077 shares available
for future issuance under the ESPP. Effective January 1, 2009, the Company’s Board of Directors approved an
additional 285,498 shares for issuance under the ESPP. Stock compensation expense with respect to the ESPP
totaled $33,903 for the year ended December 31, 2008.

17. EXERCISE OF WARRANTS

In August 2006, 17,452 shares of common stock were issued as a result of the cashless exercise of 195,160
warrants with an exercise price of $5.43 and an average fair value of $5.96. These warrants, which were expired
as of December 31, 2008, were initially granted in connection with the issuance of a convertible note in 2002.

18. SEGMENT AND GEOGRAPHIC INFORMATION

The Company considers reporting segments in accordance with SFAS 131, “Disclosure about Segments of

an Enterprise and Related Information.” The Company develops, manufactures, and sells devices designed
primarily for the surgical ablation of cardiac tissue. These devices are developed and marketed to a broad base of
medical centers in the United States and internationally. Management considers all such sales to be part of a
single operating segment.

Geographic revenues were as follows:

Revenue:

2008

2007

2006

United States . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
International

$46,918,091
8,338,932

$41,717,785
6,591,278

$34,084,304
4,158,939

Total

. . . . . . . . . . . . . . . . . . . . . . . . . . .

$55,257,023

$48,309,063

$38,243,243

Substantially all of the Company’s long-lived assets are located in the United States.

19. SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)
(Dollars in thousands, except per share data)

For the Three Months Ended

March 31,

June 30,

September 30,

December 31,

2008

2007

2008

2007

2008

2007

2008

2007

$13,530
10,299
(3,896)
(3,605)

$10,751
8,540
(4,872)
(4,302)

$14,859
11,364
(1,825)
(1,593)

$12,352
9,805
(3,160)
(2,787)

$14,802
11,406
(1,818)
(1,770)

$12,054
9,294
(2,909)
(2,598)

$12,066
8,964
(3,458)
(3,199)

$13,152
10,533
(1,627)
(1,565)

Operating Results:
Revenues . . . . . . . . . . . . . . .
Gross profit . . . . . . . . . . . . .
Loss from operations . . . . . .
Net loss . . . . . . . . . . . . . . . .
Loss per share (basic and

diluted)

. . . . . . . . . . . . . .

$ (0.25) $ (0.35) $ (0.11) $ (0.22) $ (0.12) $ (0.18) $ (0.22) $ (0.11)

Amounts may not sum to consolidated totals for the full year due to rounding. Basic and diluted net loss per
share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly per share
amounts will not necessarily equal the total for the year.

92

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

20. SUBSEQUENT EVENT

Effective February 1, 2009 the Company entered into a consulting agreement with Enable Medical

Technologies, LLC (“EMT”), an entity founded and owned by Michael D. Hooven, a co-founder and director of
the Company. Under the terms of the agreement, Enable Medical Technologies will provide research and
development consulting services related product and procedural development activities. Under the agreement,
Enable Medical Technologies will receive $216,000 as a development fee and, upon completion of certain
milestones, may earn up to an additional $30,000. The term of the agreement is six months.

93

SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS

Allowance for doubtful accounts receivable
Year ended December 31, 2008 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2007 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2006 . . . . . . . . . . . . . . . . . . . . .

Reserve for sales returns and allowances
Year ended December 31, 2008 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2007 . . . . . . . . . . . . . . . . . . . . .
Due to limited returns and insignificant allowances, no

reserve was established in 2006.

Allowance for inventory valuation
Year ended December 31, 2008 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2007 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2006 . . . . . . . . . . . . . . . . . . . . .

Valuation allowance for deferred tax assets
Year ended December 31, 2008 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2007 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2006 . . . . . . . . . . . . . . . . . . . . .

Beginning
Balance

Additions

Deductions

Ending
Balance

$

$

$

26,181
343,127
261,707

73,937
—

$

$

20,979
—
81,420

$

6,680
316,946
—

71,251
73,937

$ 73,937
—

116,858
94,667
258,558

$ 121,854
36,425
71,462

$ 54,817
14,234
235,353

$

$

$

40,480
26,181
343,127

71,251
73,937

183,895
116,858
94,667

$18,962,000
14,637,000
9,881,000

$3,204,000
4,325,000
4,756,000

$ — $22,166,000
18,962,000
14,637,000

—
—

94

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

We have evaluated the effectiveness of the design and operation of our disclosure controls and procedures, as
defined in Rules 13(a)-15(e) and 15(d)-15(e) of the Securities Exchange Act of 1934 (the “Exchange Act”), as of the end
of the period covered by this report. Our management, including the Chief Executive Officer and Chief Financial
Officer, supervised and participated in the evaluation. Based on the evaluation, we concluded that, as of the end of the
period covered by this report, our disclosure controls and procedures were effective in providing reasonable assurance
that information required to be disclosed by us in the reports we file or submit under the Exchange Act is recorded,
processed, summarized and reported within the time periods specified in the SEC’s forms and rules, and the material
information relating to the Company is accumulated and communicated to management, including the Chief Executive
Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosures.

Control systems, no matter how well designed and operated, can provide only reasonable, not absolute,
assurance that control objectives are met. Because of inherent limitations in all control systems, no evaluation of
controls can provide assurance that all control issues and instances of fraud, if any, within a company will be
detected. Additionally, controls can be circumvented by individuals, by collusion of two or more people or by
management override. Over time, controls can become inadequate because of changes in conditions or the degree
of compliance may deteriorate. Further, the design of any system of controls is based in part upon assumptions
about the likelihood of future events. There can be no assurance that any design will succeed in achieving its
stated goals under all future conditions. Because of the inherent limitations in any cost-effective control system,
misstatements due to errors or fraud may occur and not be detected.

Management’s Annual Report on Internal Control Over Financial Reporting

The management of the Company is responsible for establishing and maintaining adequate internal control

over financial reporting. The Company’s 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. Internal control over financial reporting includes 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 U.S. 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. The Company’s management assessed the effectiveness of the Company’s internal control
over financial reporting as of December 31, 2008. In making this assessment, the Company’s management used
the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission in Internal
Control-Integrated Framework. Based on such assessment, management has concluded that the Company’s
internal control over financial reporting was effective as of December 31, 2008.

The Company’s independent registered public accounting firm, Deloitte & Touche LLP, has issued an audit

report on the effectiveness of the Company’s internal control over financial reporting as of December 31, 2008,
which follows.

Changes in Internal Control Over Financial Reporting

There were no changes in the Company’s internal control over financial reporting that occurred during the

fourth quarter ended December 31, 2008 that have materially affected, or are reasonably likely to materially
affect, the Company’s internal control over financial reporting.

95

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of
AtriCure, Inc.
West Chester, Ohio

We have audited the internal control over financial reporting of AtriCure, Inc. and subsidiary (the

“Company”) as of December 31, 2008, based on criteria established in Internal Control—Integrated Framework
issued by the Committee of Sponsoring Organizations of the Treadway Commission. The Company’s
management is responsible for maintaining effective internal control over financial reporting and for its
assessment of the effectiveness of internal control over financial reporting, included in the accompanying
Management’s Annual Report on Internal Control Over Financial Reporting. Our responsibility is to express an
opinion on the Company’s internal control over financial reporting based on our audit.

We conducted our audit 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 effective internal control over financial reporting was maintained in all material respects. Our
audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a
material weakness exists, testing and evaluating the design and operating effectiveness of internal control based
on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We
believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed by, or under the supervision of,
the company’s principal executive and principal financial officers, or persons performing similar functions, and
effected by the company’s board of directors, management, and other personnel to provide reasonable assurance
regarding the reliability of financial reporting and the preparation of financial statements for external purposes in
accordance with generally accepted accounting principles. A company’s internal control over financial reporting
includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail,
accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) 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 (3) 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 the inherent limitations of internal control over financial reporting, including the possibility of

collusion or improper management override of controls, material misstatements due to error or fraud may not be
prevented or detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal
control over financial reporting to future periods are subject to the risk that the controls may become inadequate
because of changes in conditions, or that the degree of compliance with the policies or procedures may
deteriorate.

In our opinion, the Company maintained, in all material respects, effective internal control over financial
reporting as of December 31, 2008, based on the criteria established in Internal Control—Integrated Framework
issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board

(United States), the consolidated financial statements and financial statement schedule as of and for the year
ended December 31, 2008 of the Company and our report dated March 12, 2009 expressed an unqualified
opinion on those financial statements and financial statement schedule.

/s/ Deloitte & Touche LLP

Cincinnati, Ohio
March 12, 2009

96

ITEM 9B. OTHER INFORMATION

None.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The information required by this Item is incorporated by reference to the definitive proxy statement for our
2009 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission within 120 days
after the end of 2008 (the “Proxy Statement”).

ITEM 11. EXECUTIVE COMPENSATION

The information required by this Item is incorporated by reference to the Proxy Statement.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

AND RELATED STOCKHOLDER MATTERS

The information required by this Item is incorporated by reference to the Proxy Statement.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR

INDEPENDENCE

The information required by this Item is incorporated by reference to the Proxy Statement.

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

The information required by this Item is incorporated by reference to the Proxy Statement.

97

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(1) The financial statements required by Item 15(a) are filed in Item 8 of this Form 10-K.

(2) The financial statement schedules required by Item 15(a) are filed in Item 8 of this Form 10-K.

(3) The following exhibits are included herein or incorporated herein by reference:

Exhibit No.

Description

3.1(1)

3.2(1)

4.1(2)

4.2(2)

4.3(3)

4.4(4)

10.1(2)#

10.2(3)#

10.3(3)†

10.4(3)†

10.5(2)

10.6(2)

10.7(2)

10.8(2)†

10.9(2)†

10.10(3)

10.11†

Amended and Restated Certificate of Incorporation.

Second Amended and Restated Bylaws.

Amended and Restated Investors’ Rights Agreement, dated June 6, 2002 between AtriCure, Inc.
and each of the signatory Investors.

Amendment No. 1 to Amended and Restated Investors’ Rights Agreement, dated March 8, 2005
between AtriCure, Inc. and each of the signatory Investors.

Specimen common stock certificate.

Registration Rights Agreement, dated May 24, 2007, by and between AtriCure, Inc. and those
purchasers executing the Registration Rights.

2001 Stock Option Plan.

2005 Equity Incentive Plan.

Development Agreement, dated as of June 1, 2005, between AtriCure, Inc. and Stellartech
Research Corporation.

Manufacturing Agreement, dated as of June 1, 2005, between AtriCure, Inc. and Stellartech
Research Corporation.

Lease Agreement, dated as of December 18, 2000, between AtriCure, Inc. and Allen Road
Properties Limited Liability Company.

Agreement to Improve Leased Premises, First Amendment to Lease Dated December 18, 2000,
dated as of May 28, 2002, between AtriCure, Inc. and Allen Road Properties Limited Liability
Company.

Agreement to Expand Leased Premises and Extend Lease, Second Amendment to Lease Dated
December 18, 2000, dated as of April 8, 2004, between AtriCure, Inc. and Allen Road Properties
Limited Liability Company.

Master Development, Manufacturing and Supply Agreement, Second Amended and Restated,
dated as of March 19, 2003 by and between Enable Medical Corporation and AtriCure, Inc.

Technology Transfer Agreement, dated as of May 25, 2001, by and between AtriCure, Inc. and
Enable Medical Corporation.

Development and License Agreement, dated as of July 15, 2005, by and between AtriCure, Inc.
and UST Inc.

Royalty Agreement, dated as of November 21, 2005, by and between AtriCure, Inc. and
Randall K. Wolf, M.D.

10.12(6)

Agreement, dated as of July 18, 2006, by and between AtriCure, Inc. and the Cleveland Clinic.

10.13

Amendment No. 1, dated as of December 1, 2008, to Agreement dated as of July 18, 2006 by and
between AtriCure, Inc. and the Cleveland Clinic.

98

Exhibit No.

Description

10.14(7)#

Consulting Agreement, dated as of January 1, 2007, between AtriCure, Inc. and
Michael D. Hooven.

10.15(8)#

Employment Agreement, dated as of January 5, 2007, between AtriCure, Inc. and Julie A. Piton.

10.16(10)#

Amendment of Employment Agreement, dated as of April 17, 2007, between AtriCure, Inc. and
Julie A. Piton.

10.17(9)#

10.18(11)

10.19(11)

10.20(12)

Employment Agreement, dated as of February 9, 2007, between AtriCure, Inc. and
David J. Drachman.

Bill of Sale and Assignment Agreement, dated as of August 7, 2007, between CooperSurgical, Inc.
and AtriCure, Inc.

Non-Competition Agreement, dated as of August 7, 2007, between CooperSurgical, Inc. and
AtriCure, Inc.

Credit Agreement, dated as of July 1, 2008, among AtriCure, Inc., the lenders party thereto, and
National City Bank as administrative agent for the lenders.

10.21(13)#

Form of Performance Share Agreement.

21

23.1

31.1

31.2

32.1

32.2

Subsidiaries of the Registrant.

Consent of Deloitte & Touche LLP.

Rule 13a-14(a) Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-
Oxley Act of 2002.

Rule 13a-14(a) Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-
Oxley Act of 2002.

Certification pursuant to 18 U.S.C. Section 1350 by the Chief Executive Officer, as adopted,
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

Certification pursuant to 18 U.S.C. Section 1350 by the Chief Financial Officer, as adopted,
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

†

#

Incorporated by reference to our Registration Statement on Form S-1 (Registration No. 333-124197), filed
on April 20, 2005, which was declared effective on August 4, 2005.
Incorporated by reference to Amendment No. 1 to our Registration Statement on Form S-1 (Registration
No. 333-124197), filed on June 14, 2005, which was declared effective on August 4, 2005.
Incorporated by reference to Amendment No. 2 to our Registration Statement on Form S-1 (Registration
No. 333-124197), filed on July 7, 2005, which was declared effective on August 4, 2005.
Incorporated by reference to our Current Report on Form 8-K, filed on May 25, 2007.
Incorporated by reference to Amendment No. 3 to our Registration Statement on Form S-1 (Registration
No. 333-124197), filed on July 19, 2005, which was declared effective on August 4, 2005.
Incorporated by reference to our Current Report on Form 8-K, filed on July 20, 2006.
Incorporated by reference to our Current Report on Form 8-K, filed on January 5, 2007.
Incorporated by reference to our Current Report on Form 8-K, filed on January 9, 2007.
Incorporated by reference to our Current Report on Form 8-K, filed on February 14, 2007.
Incorporated by reference to our Current Report on Form 8-K, filed on April 20, 2007.
Incorporated by reference to our Current Report on Form 8-K, filed on August 9, 2007.
Incorporated by reference to our Current Report on Form 8-K, filed on July 2, 2008.
Incorporated by reference to our Current Report on Form 8-K, filed on October 31, 2008.
Portions of this exhibit have been omitted and filed separately with the Securities and Exchange
Commission pursuant to a request for confidential treatment.
Compensatory plan or arrangement.

99

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this

Form 10-K to be signed on our behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: March 16, 2009

Date: March 16, 2009

AtriCure, Inc.
(REGISTRANT)

/s/ David J. Drachman
David J. Drachman
President and Chief Executive Officer
(Principal Executive Officer)

/s/ Julie A. Piton

Julie A. Piton
Vice President of Finance and Administration
and Chief Financial Officer
(Principal Financial and Accounting Officer)

KNOW ALL MEN AND WOMEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints David J. Drachman, his attorney-in-fact, with the power of substitution, for him in
any and all capacities, to sign any and all amendments to this Form 10-K, and to file the same, with exhibits
thereto and other documents in connection therewith, with the U.S. Securities and Exchange Commission,
granting unto said attorneys-in-fact, and each of them, full power and authority to do and perform each and every
act and thing requisite and necessary to be done therewith, 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 any of them or his
substitute or substitutes, may do or cause to be done by virtue thereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this Form 10-K has been signed by the

following persons on behalf of the registrant and in the capacities indicated on March 16, 2009:

Signature

Title(s)

/s/ Richard M. Johnston

Richard M. Johnston

/s/ David J. Drachman

David J. Drachman

/s/ Julie A. Piton

Julie A. Piton

/s/ Mark A. Collar

Mark A. Collar

/s/ Donald C. Harrison

Donald C. Harrison

/s/ Michael D. Hooven

Michael D. Hooven

Richard M. Johnston
Chairman of the Board

David J. Drachman
Director, President and Chief Executive Officer
(Principal Executive Officer)

Julie A. Piton
Vice President of Finance and Administration
and Chief Financial Officer
(Principal Financial and Accounting Officer)

Mark A. Collar
Director

Donald C. Harrison
Director

Michael D. Hooven
Director

100

Signature

Title(s)

/s/ Elizabeth D. Krell

Elizabeth D. Krell

/s/ Mark R. Lanning
Mark R. Lanning

/s/ Karen P. Robards
Karen P. Robards

Elizabeth D. Krell
Director

Mark R. Lanning
Director

Karen P. Robards
Director

101

Exhibit No.

Description

EXHIBIT INDEX

3.1(1)

3.2(1)

4.1(2)

4.2(2)

4.3(3)

4.4(4)

10.1(2)#

10.2(3)#

10.3(3)†

10.4(3)†

10.5(2)

10.6(2)

10.7(2)

10.8(2)†

10.9(2)†

10.10(3)

10.11†

Amended and Restated Certificate of Incorporation.

Second Amended and Restated Bylaws.

Amended and Restated Investors’ Rights Agreement, dated June 6, 2002 between AtriCure, Inc.
and each of the signatory Investors.

Amendment No. 1 to Amended and Restated Investors’ Rights Agreement, dated March 8, 2005
between AtriCure, Inc. and each of the signatory Investors.

Specimen common stock certificate.

Registration Rights Agreement, dated May 24, 2007, by and between AtriCure, Inc. and those
purchasers executing the Registration Rights.

2001 Stock Option Plan.

2005 Equity Incentive Plan.

Development Agreement, dated as of June 1, 2005, between AtriCure, Inc. and Stellartech
Research Corporation.

Manufacturing Agreement, dated as of June 1, 2005, between AtriCure, Inc. and Stellartech
Research Corporation.

Lease Agreement, dated as of December 18, 2000, between AtriCure, Inc. and Allen Road
Properties Limited Liability Company.

Agreement to Improve Leased Premises, First Amendment to Lease Dated December 18, 2000,
dated as of May 28, 2002, between AtriCure, Inc. and Allen Road Properties Limited Liability
Company.

Agreement to Expand Leased Premises and Extend Lease, Second Amendment to Lease Dated
December 18, 2000, dated as of April 8, 2004, between AtriCure, Inc. and Allen Road Properties
Limited Liability Company.

Master Development, Manufacturing and Supply Agreement, Second Amended and Restated,
dated as of March 19, 2003 by and between Enable Medical Corporation and AtriCure, Inc.

Technology Transfer Agreement, dated as of May 25, 2001, by and between AtriCure, Inc. and
Enable Medical Corporation.

Development and License Agreement, dated as of July 15, 2005, by and between AtriCure, Inc.
and UST Inc.

Royalty Agreement, dated as of November 21, 2005, by and between AtriCure, Inc. and
Randall K. Wolf, M.D.

10.12(6)

Agreement, dated as of July 18, 2006, by and between AtriCure, Inc. and the Cleveland Clinic.

10.13

10.14(7)#

Amendment No. 1, dated as of December 1, 2008, to Agreement dated as of July 18, 2006 by and
between AtriCure, Inc. and the Cleveland Clinic.

Consulting Agreement, dated as of January 1, 2007, between AtriCure, Inc. and
Michael D. Hooven.

10.15(8)#

Employment Agreement, dated as of January 5, 2007, between AtriCure, Inc. and Julie A. Piton.

10.16(10)#

Amendment of Employment Agreement, dated as of April 17, 2007, between AtriCure, Inc. and
Julie A. Piton.

102

Exhibit No.

Description

10.17(9)#

10.18(11)

10.19(11)

10.20(12)

Employment Agreement, dated as of February 9, 2007, between AtriCure, Inc. and
David J. Drachman.

Bill of Sale and Assignment Agreement, dated as of August 7, 2007, between CooperSurgical, Inc.
and AtriCure, Inc.

Non-Competition Agreement, dated as of August 7, 2007, between CooperSurgical, Inc. and
AtriCure, Inc.

Credit Agreement, dated as of July 1, 2008, among AtriCure, Inc., the lenders party thereto, and
National City Bank as administrative agent for the lenders.

10.21(13)#

Form of Performance Share Agreement.

21

23.1

31.1

31.2

32.1

32.2

Subsidiaries of the Registrant.

Consent of Deloitte & Touche LLP.

Rule 13a-14(a) Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-
Oxley Act of 2002.

Rule 13a-14(a) Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-
Oxley Act of 2002.

Certification pursuant to 18 U.S.C. Section 1350 by the Chief Executive Officer, as adopted,
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

Certification pursuant to 18 U.S.C. Section 1350 by the Chief Financial Officer, as adopted,
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

†

#

Incorporated by reference to our Registration Statement on Form S-1 (Registration No. 333-124197), filed
on April 20, 2005, which was declared effective on August 4, 2005.
Incorporated by reference to Amendment No. 1 to our Registration Statement on Form S-1 (Registration
No. 333-124197), filed on June 14, 2005, which was declared effective on August 4, 2005.
Incorporated by reference to Amendment No. 2 to our Registration Statement on Form S-1 (Registration
No. 333-124197), filed on July 7, 2005, which was declared effective on August 4, 2005.
Incorporated by reference to our Current Report on Form 8-K, filed on May 25, 2007.
Incorporated by reference to Amendment No. 3 to our Registration Statement on Form S-1 (Registration
No. 333-124197), filed on July 19, 2005, which was declared effective on August 4, 2005.
Incorporated by reference to our Current Report on Form 8-K, filed on July 20, 2006.
Incorporated by reference to our Current Report on Form 8-K, filed on January 5, 2007.
Incorporated by reference to our Current Report on Form 8-K, filed on January 9, 2007.
Incorporated by reference to our Current Report on Form 8-K, filed on February 14, 2007.
Incorporated by reference to our Current Report on Form 8-K, filed on April 20, 2007.
Incorporated by reference to our Current Report on Form 8-K, filed on August 9, 2007.
Incorporated by reference to our Current Report on Form 8-K, filed on July 2, 2008.
Incorporated by reference to our Current Report on Form 8-K, filed on October 31, 2008.
Portions of this exhibit have been omitted and filed separately with the Securities and Exchange
Commission pursuant to a request for confidential treatment.
Compensatory plan or arrangement.

103

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