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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, 2011

‘ 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

6217 Centre Park Drive, West Chester, OH
(Address of principal executive offices)

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

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

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 whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data
File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for
such shorter period that the registrant was required to submit and post such files). Yes 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 ‘

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, 2011, as reported on the NASDAQ Global Market, was $143.9 million.

As of March 6, 2012 there were 16,480,265 shares of Common Stock, $.001 par value per share, outstanding.

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 end of the fiscal year covered by this Form 10-K.

DOCUMENTS INCORPORATED BY REFERENCE

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. MINE SAFETY DISCLOSURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

1

1

20

38

38

38

38

39

39

41

42

55

56

86

86

89

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ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND

MANAGEMENT AND RELATED STOCKHOLDER MATTERS . . . . . . . . . . . . . . .

89

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

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

89

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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 for the treatment
of atrial fibrillation, or AF, and systems for the exclusion of the left atrial appendage. We are the only company
with a system cleared by the United States Food and Drug Administration, or FDA, for the treatment of patients
with persistent and long-standing persistent AF. We have two primary product lines for the ablation of cardiac
tissue. Our primary product line for the ablation of cardiac tissue, which accounts for a majority of our revenue,
is the AtriCure Synergy Ablation System, a bipolar ablation clamp system and related radiofrequency ablation
devices. We also offer a cryoablation product line, which features reusable and disposable cryoablation devices.
Additionally, we offer the AtriClip™ Gillinov-Cosgrove Left Atrial Appendage System, or AtriClip system,
which is designed to safely and effectively exclude the left atrial appendage.

Cardiothoracic surgeons have adopted our AtriCure Synergy Ablation System, or Synergy System, and
cryoablation systems to treat AF in an estimated 120,000 patients since January 2003, and we believe that we are
currently the market leader in the surgical treatment of AF. Our products are utilized by cardiothoracic surgeons
during concomitant open-heart surgical procedures and also during sole-therapy minimally invasive cardiac
ablation procedures. During a concomitant open procedure, the surgeon ablates cardiac tissue and/or excludes the
left atrial appendage, secondary, or concomitant, to a primary cardiac procedure such as a valve or coronary
bypass. Additionally, cardiothoracic surgeons have adopted our products as a treatment alternative for AF
patients who may be candidates for sole-therapy minimally invasive surgical procedures. Our Synergy System,
which includes our Isolator® Synergy clamps, a radiofrequency generator and related switchbox, is cleared by the
FDA, for the treatment of patients with persistent and long-standing persistent AF during open-heart concomitant
coronary artery bypass grafting and/or valve replacement or repair procedures. During 2011, product sales of the
Synergy System in the United States, or U.S, represented approximately 40% of our U.S. revenue. To date, none
of our other products have been approved or cleared by the FDA for the treatment of other forms of AF or for
other uses for the treatment of AF. Additionally, the FDA has not cleared or approved our products for a
reduction in the risk of stroke. We anticipate that substantially all of our revenue for the foreseeable future will
relate to products we currently sell, or are in the process of developing, which surgeons generally use to ablate
cardiac tissue for the treatment of AF or for the exclusion of the left atrial appendage.

1

AF affects approximately 1% of the population in the United States. It 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. AF is a condition wherein 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 may become static, creating an increased risk that a blood clot will
form and cause a stroke or other serious 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.

In the United States we primarily sell our products to medical centers through our direct sales force.
AtriCure Europe, B.V., our wholly-owned subsidiary incorporated and based in the Netherlands, markets and
sells our products throughout Europe, the Middle East and Africa, or EMEA, primarily through distributors,
while in certain markets, such as Germany and the Benelux region, 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 substantially transacted in Euros. Our sales outside of the United States represented 24%
and 19% of our revenue during 2011 and 2010, respectively.

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 distributed 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,
we acquired Enable Medical Corporation, the manufacturer of our Isolator clamps, which are an essential part of
our Synergy System. Additionally, in December 2005, we formed AtriCure Europe, B.V.

Market Overview

AF is the most commonly diagnosed sustained cardiac arrhythmia, and affects more than 5.5 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 Heart Study, a study originally undertaken by
the National Heart Institute (now known as the National Heart, Lung and Blood Institute), 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. 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.

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. It is estimated that 90% of cardiac clots in AF patients form in the left atrial
appendage. AF-related strokes tend to be severe and approximately 35% of AF patients will have a stroke in their
lifetime. 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 accounts for $6.7 billion in hospitalization-
related costs in the United States each year and an estimated $5 million in office visits annually. Additional costs
include the cost of drugs and indirect costs, such as the management of AF-related strokes, the costs of which are
believed to be significant.

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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
may be candidates to 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 generally 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.

Of the patients undergoing open-heart surgery in the United States, we estimate that over 80,000 are
potential candidates for surgical ablation using our ablation products. Of the United States population diagnosed
with AF, approximately 12%, or 300,000, 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 may not be indicated. Accordingly, we believe that there is a large population of
under-treated patients who would potentially benefit from a minimally invasive or hybrid AF treatment using our
Synergy System and related products, and that these patients comprise our largest growth opportunity.

It is estimated that 15% to 20% of all strokes are attributable to AF and that a substantial 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 and current practice guidelines indicate that the left atrial
appendage should be removed, when possible, during cardiac surgery in patients at risk of developing
postoperative AF. We also believe that our AtriClip system is potentially safer, more effective and easier to use
when permanently excluding the left atrial appendage than other products and techniques. The AtriClip system
was cleared for concomitant use in the United States in June 2010 and was commercially released in the United
States during July 2010. We believe the market for the AtriClip system is large and represents a growth
opportunity for us.

The AtriCure Solution and Products

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,
particularly for patients with more chronic forms of AF or patients who have failed single or multiple catheter
ablations. Reports of clinical studies conducted by doctors at prominent medical centers suggest that our
products, including our Synergy 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.

Our clinical studies for the use of our products to treat AF are ongoing. Leading cardiothoracic surgeons and
electrophysiologists, including those who serve or who have served as consultants to us, have published results of
initial clinical studies utilizing our Synergy System. The results of these studies are promising in terms of
efficacy, ease of use and safety. Additionally, we have conducted FDA regulated clinical trials which support the
safety and efficacy of our Synergy System.

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We have two primary product lines for cardiac tissue ablation and a product line for left atrial appendage

exclusion:

Product lines for cardiac tissue ablation:

1.) AtriCure’s Synergy Ablation System and Related Radio-Frequency Ablation Devices. Our
Synergy System and related radio-frequency, or RF, devices, such as our multifunctional pens,
represent our primary product line and currently generate a substantial majority of our revenue. Our
Synergy System and related RF devices are used in both open and minimally invasive procedures and
primarily consist of the following products:

•

Isolator Bipolar Radio-Frequency Ablation Clamps. We sell multiple configurations of our
Isolator Synergy clamps. One design is for ablation during open-heart procedures and one design is
for ablation during minimally invasive procedures. During 2011, we released our Isolator Synergy
Access clamps in the United States, a new open-heart configuration featuring a pivoting clamp head
that promotes easier access to challenging anatomy. All of our 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.

• 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 pens and Coolrail linear ablation device. We
generally lend our ASU, free of charge, to our direct customers and sell it to our distributors.

• AtriCure Switch Box, or ASB. Our ASB is a compact switch box which provides the technology
needed for the dual pulsing electrodes in our Isolator Synergy clamps as well as the ability to
connect and toggle between our multiple RF devices. We generally lend our ASB, free of charge, to
our direct customers and sell it to our distributors.

•

Isolator Multifunctional Pens. Our Isolator multifunctional pens are disposable RF devices that
come in two configurations; one that makes linear ablations and one that makes spot ablations. The
pens enable surgeons to evaluate cardiac arrhythmias, perform temporary cardiac pacing, sensing,
and stimulation and ablate cardiac tissue with the same device. When the multifunctional pens are
used with our ASB, surgeons are able to toggle back and forth between temporary pacing, sensing,
and stimulation and ablation. Because of their broad range of capabilities, we believe surgeons are
generally using one or both of our pen devices in combination with our Isolator clamps during both
minimally invasive and open-heart procedures.

2.) Cryoablation System. Our cryoablation offering consists of a variety of reusable and disposable

devices which use cryothermy, or extreme cold, to ablate cardiac tissue. In August 2007 we acquired
the Frigitronics® CCS-200 product line for cardiac ablation, which included a generator and a variety
of reusable cardiac ablation probes. During the first half of 2009, we launched our Cryo1™
cryoablation device, and during the fourth quarter of 2010 we launched our next generation disposable
cryoablation device, cryoIce™, which has replaced our Cyro1 device. During 2011, we introduced our
next generation cryo generator, cryoICE® BOX. Our disposable cryoablation devices are used with our
cryoablation generators and are being adopted by physicians for AF ablation treatment during certain
open-heart procedures, for which physicians prefer cryoablation over RF ablation. We believe our
cryoablation devices provide us with a superior competitive product offering.

Product line for left atrial appendage exclusion:

• AtriClip System. Our AtriClip system is designed to exclude the left atrial appendage by implanting the
device during concomitant open 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.
We believe that our AtriClip system is potentially safer, more effective and easier to use when

4

permanently excluding the left atrial appendage than current products and techniques. The AtriClip
system received clearance in the United States in June 2010 and was also launched in Europe during the
second half of 2009. During 2011, the AtriClip system was approved for use during a minimally
invasive ablation procedure for patients enrolling in our DEEP AF clinical trial. Additionally, the
AtriClip system will be utilized in an emerging minimally invasive, sole-therapy left atrial appendage
exclusion trial, which we anticipate initiating enrollment in during the second half of 2012.

In addition to the above product lines we also sell enabling technologies including our Lumitip™ dissector
and MicroPace ORLab™ system. The Lumitip dissector is used by surgeons to separate tissues to provide access
to key anatomical structures that are targeted for ablation. Our ORLab system is a stimulating, mapping and
recording system which, we believe, when used with a mapping probe, enables physicians to effectively confirm
that the ablation lines being created are forming electrical barriers or lines of block.

Current AF 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 or not the patient suffers from other forms of heart disease. During 2007 the Heart Rhythm Society
published an updated 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

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. 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.

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Surgeons have adopted our products for use in open-heart and minimally invasive procedures for the
treatment of AF. During elective open-heart surgical procedures, such as bypass or valve surgery, cardiothoracic
surgeons use our ablation systems to treat patients with a pre-existing history of AF. Surgeons report that ablation
using our products generally adds approximately 10 to 20 minutes to an open-heart surgical procedure. Surgeons
use our products 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, known as paroxysmal, or more continuous,
known as persistent, long-standing persistent or permanent. Patients who have been diagnosed with AF for a
longer duration and have non-paroxysmal forms of AF generally receive more extensive ablation procedures than
patients who have been diagnosed with AF for a shorter duration or who have paroxysmal AF. Additionally,
during an open-heart procedure, physicians may use our AtriClip system to exclude the left atrial appendage,
which has been reported to add less than one minute to a procedure. Surgeons using our ablation systems 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 pens to sense, pace, stimulate
or ablate cardiac tissue. Surgeons utilize our Synergy System and/or our cryoablation system to perform
pulmonary vein isolation.

Additional Lesions. For those patients who have non-paroxysmal forms of 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 devices during open-heart or concomitant 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 a multifunctional pen to sense, pace, stimulate or ablate cardiac
tissues. Additionally, our reusable cryoablation probes are sometimes used to ablate cardiac tissue near the heart
valves.

For those patients with AF who do not require a concomitant open-heart surgical procedure, surgeons have
used our Isolator clamps and related products 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 typically been two to five days. Similar to the open-heart surgical
procedure, patients who have non-paroxysmal forms of AF generally require an expanded lesion set that mimics
the cut and sew Maze procedure. Our multifunctional pens are often used during these procedures to enable
physicians to perform additional ablations.

Physicians are performing an emerging minimally invasive stand-alone, single-setting (same-day) procedure

which combines epicardial ablation (ablation on the outside of the heart) with endocardial ablation and mapping
techniques (from the inside of the heart). Physicians are reporting that they are performing this emerging
procedure, also known as a hybrid procedure, utilizing our Isolator clamps and related products in combination
with catheter ablation and mapping techniques to primarily treat patients who have non-paroxysmal forms of AF.
In the United States, in December 2010 the first patient was enrolled in a feasibility clinical trial, DEEP AF,
which explores the safety and effectiveness of this procedure when utilizing our products in combination with a
commercially available catheter for the treatment of persistent and long-standing persistent AF. Enrollment in the
trial was closed in November 2011 after 24 patients were enrolled. Some physicians have expressed a desire to
perform the procedure in a “staged” manner, which would have the epicardial (surgical) procedure performed on
the first day of hospitalization, and the catheter ablation and mapping to be performed at a later time during the
hospitalization. In February 2012 we submitted to the FDA a protocol for a staged DEEP AF feasibility trial. If
approved by the FDA, we anticipate initiating enrollment during the second half of 2012.

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Product Development

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

procedural and market needs with the goal of increasing revenue and optimizing procedural outcomes. Our
current product development activity includes projects extending and improving our existing products, the
creation of new enabling devices and research into new technologies.

Our product development initiatives have been partially funded by a variety of grant programs. Effective
April 2010, we received a grant from the State of Ohio through the Global Cardiovascular Innovation Center.
Pursuant to the terms of the grant, as amended, we are eligible to receive $0.5 million in support of defined
research and development activities through 2012. During 2011 we earned $0.1 million pursuant to the grant, and
to date we have earned $0.2 million under the grant.

In July 2011 we were awarded a $1 million grant from the Ohio Third Frontier Commission, a technology-

based economic development initiative dedicated to supporting existing industries that are transforming
themselves with new globally competitive products and fostering the formation and attraction of new companies
in emerging industry sectors in Ohio. The grant will be used to develop and commercialize a left atrial appendage
exclusion device for use in minimally invasive standalone procedures. During 2011 we did not earn any grant
income related to this grant.

Business Strategy

Our mission is to expand the treatment options for patients who suffer from AF, or have a high risk of
stroke, through the continued development of our technologies and expansion of our product offerings. The key
elements of our strategy include:

New Product Innovation. We plan to continue to develop new and innovative products, including those that

allow us to enter new market opportunities or expand our growth in existing markets. During 2010 we launched
the AtriClip system in the United States, which provides a new growth platform and allows entrance into a new
market. Our product development and growth plans include continued innovation to expand on both new and
existing market opportunities. For example, during 2012, we expect to launch a new, minimally invasive, totally
thoracoscopic version of the AtriClip system. We plan to conduct a feasibility trial to evaluate the effectiveness
of the AtriClip system for the reduction of stroke during a sole-therapy left atrial appendage exclusion procedure.

Provide Training and 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 technologies as they relate to their cleared indications. Our highly trained sales professionals meet
with doctors at leading institutions to provide education and technical training on the technical features and
benefits of our products. With the December 2011 approval of our Synergy System for the treatment of AF, our
U.S. sales representatives also educate and train physicians on the use of the Synergy System to treat certain AF
patients who are undergoing open-heart surgery. Additionally, we recently instituted a comprehensive training
program to train existing and new customers on the use of the Synergy System to treat certain AF patients
undergoing open-heart surgery. This FDA approved training program provides for comprehensive training of all
new users and an eighteen month window to train existing users. We believe this training and education program
will increase awareness about the surgical treatment of AF during open-heart procedures, which we believe will
result in market expansion. We also 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 technologies is growing and
will result in the increased use of our products.

Expand International Markets and Enter into New Markets. Sales to our international customers
represented 24% of our total revenue for 2011. Many of the international markets in which we currently do

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business are underpenetrated markets which present high growth opportunities for our products. Further, we plan
to continue to evaluate expansion opportunities in new geographic markets and capitalize on new product
introductions.

Form Relationships with Key Opinion Leaders at Leading Institutions. We have formed investigational
relationships with key opinion leaders at several leading medical centers who have worked with us as consultants
to evaluate and develop our products. Additionally, we have formed an advisory board made up of leading
physicians to oversee our AF training programs. Several key opinion leaders 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 Synergy System’s ability to create transmural lesions and/or as an AF
treatment alternative in addition to our FDA clinical trials. Key publications and presentations have highlighted
promising results utilizing our products to treat patients with AF during sole-therapy minimally invasive surgical
procedures. Further, initial presentations and publications have described our AtriClip system as a safe and
effective means of excluding the left atrial appendage. We believe that these publications and presentations have
contributed to and, we expect, will continue to contribute to the expanded adoption of our products.

Leverage Product Portfolio, Labeling and Cross-Selling Opportunities. We believe we have the most
comprehensive offering of cardiac ablation and left atrial appendage exclusion products in the market. Further,
we are the only company with a device approved to treat patients with persistent and long-standing persistent AF.
We plan to leverage our leading product portfolio and FDA approvals to facilitate cross-selling of our products as
well as to drive market share gains through competitive account conversions.

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

adoption of our minimally invasive products include procedural advancements, such as the hybrid procedure, and
the publication of peer-reviewed articles, which we believe will help validate the successful, long-term use of our
products for patients with AF. We believe that ongoing research activities, including clinical trials, new
procedural techniques and anticipated presentations and publications will create an increased demand for our
minimally invasive products.

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. The primary efficacy endpoints of the trial were
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 was used to determine the rhythm status six months following
surgery. The ABLATE clinical trial completed enrollment and preliminary follow-up at 55 patients during 2009.
The trial met or exceeded the defined endpoints, including an efficacy outcome of 74%. In December 2010 we
submitted our final clinical module to the FDA, including the supplementary data, in support of a PMA approval
for our Synergy Ablation System for the treatment of AF during concomitant open-heart procedures. In October
2011 the ABLATE PMA was reviewed at a meeting of the FDA’s Circulatory System Devices Panel. The panel
recommended approval by the FDA of AtriCure’s Synergy Ablation System. In December 2011 the FDA
approved the Synergy Ablation System for the treatment of patients with persistent and long-standing persistent
AF during open-heart concomitant coronary artery bypass grafting and/or valve replacement or repair
procedures. The approval included the implementation of a 350-patient post-approval study, of which
approximately 50 patients have been enrolled through the ABLATE AF study. Additionally, the FDA approval
includes a physician training and education program.

During the third quarter of 2010 our DEEP AF clinical trial was approved by the FDA. DEEP AF was a
feasibility trial designed to evaluate the safety and effectiveness of our minimally invasive products with catheter
mapping and ablation technologies for the treatment of patients with persistent or long-standing persistent AF.

8

The trial was modified during the first quarter of 2011 to include the use of the AtriClip system to exclude the
left atrial appendage. Enrollment in the trial was initiated in December 2010 and was closed in November 2011
after it was determined that a staged approach, where the minimally invasive surgical ablation procedure is
performed and the catheter optimization is scheduled separately, may be more applicable to a larger number of
investigators. The trial was conducted at six U.S. medical centers and enrolled 24 patients. In February 2012 we
submitted to the FDA a staged DEEP AF protocol and, if approved by the FDA, we anticipate initiating
enrollment during the second half of 2012. We would expect to enroll up to 30 patients at six medical centers.
The protocol, as submitted, evaluates the effectiveness of a staged approach where a minimally invasive
procedure is performed initially and the catheter and mapping optimization is performed on a different day
during the same hospitalization.

During the fourth quarter of 2011 our stroke clinical trial was approved by the FDA. The stroke trial is a
feasibility trial designed to evaluate the safety and effectiveness of AtriCure’s thoracoscopically deployed system
for stroke prophylaxis, or prevention, in patients with non-valvular AF and in whom long-term oral
anticoagulation therapy is considered unsuitable. The trial is a 30 patient trial and will be conducted at six U.S.
medical centers, with enrollment anticipated to begin during the second half of 2012.

Sales, Marketing and Medical Education

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

their technical benefits. It is our policy not to market or promote our products for the treatment of AF or a
reduction in stroke risk unless and until we receive FDA approval or clearance for those uses. Our sales
personnel visit physicians to discuss the general attributes of our products and promote them for their FDA
cleared indications. We train our sales force on the use of our products to treat AF to the extent the products are
cleared for the treatment of AF. We also train our sales force on the use of all of our products to treat AF or
reduce the risk of stroke so that they are able to respond to unsolicited requests from doctors for information. In
addition, medically trained clinical application specialists and our sales representatives attend surgical procedures
to discuss the use of our products and to respond in a non-promotional manner to unsolicited requests for
information on the use of our products.

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. During 2010 we entered into a five-year Corporate Integrity
Agreement with the Office of Inspector General of the Department of Health and Human Services. The
Agreement provides for increased training, monitoring and compliance activities with respect to our healthcare
compliance activities.

Our sales team in the United States is led by a Vice President of Sales and has approximately 60 employees

supporting approximately 40 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 market and sell our products in selected markets outside of the United States through independent

distributors and, in EMEA markets, through our European subsidiary which includes a combination of
independent distributors and direct sales personnel. During 2011 and 2010, sales to customers outside of the
United States accounted for 24% and 19% of our total revenue, 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. Our international sales team is led by a Vice President, General Manager,
International and has direct sales representatives who sell to customers in markets we sell directly to, such as
Germany and the Benelux region. We continue to evaluate opportunities for further expansion into markets
outside of the United States.

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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., nContact, Inc. and Endoscopic Technologies, Inc. We and our
competitors provide products that have been adopted by doctors for the off-label treatment of AF. As of
December 31, 2011 we were the only company with a FDA approval, or clearance, to market a surgical ablation
system for the treatment of AF and the only company with a device, whether catheter-based or surgical, cleared
to treat patients with persistent or long-standing persistent AF. Some of our competitors offer catheter-based
treatments, including but not limited to Biosense Webster, Inc. (a subsidiary of Johnson & 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. However, catheter-based treatments often
do not effectively treat patients with non-paroxysmal forms of AF, which we believe is a segment of the AF
patient population that would benefit from minimally invasive AF procedures.

We believe that we compete favorably against companies that have products used for the surgical treatment

of AF during both open-heart 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 products will
not be introduced. We also believe that our products compete favorably when compared to catheter-based
treatments for non-paroxysmal forms of AF. Further, we believe our AtriClip system provides an improved
treatment alternative for the exclusion of the left atrial appendage.

Due to the size of the AF and left atrial appendage exclusion markets and the unmet need for an AF cure,

competitors have dedicated 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 AF treatment and left atrial appendage exclusion markets are characterized by extensive research efforts and
technological progress. Further, recent publications, our FDA AF approval and industry events are expanding
knowledge of the markets and treatment alternatives.

Existing or new competitors may develop technologies and products that are safer, more effective, easier to
use or less expensive than our 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 and 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 (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 Medicare Part B
covers physician services. Because Medicare beneficiaries comprise a large percentage of the populations for
which our products are 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.

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Medicare’s Part A program pays hospitals for inpatient services, such as cardiothoracic surgery, under the

Inpatient Prospective Payment System, or IPPS, which provides a predetermined payment based on the patient’s
discharge diagnoses and surgical procedure(s). Discharge diagnoses are grouped into Medicare Severity
Diagnosis Related Groupings (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 and/or
LAA exclusion device are used during a concomitant open-heart procedure, Medicare’s hospital reimbursement
is based upon the patient’s primary surgical procedure. Reimbursement for sole-therapy minimally invasive AF
ablation treatment is also influenced by the patient’s severity of illness. Currently, we believe hospital
reimbursement rates for sole therapy and concomitant therapy cardiac surgical tissue ablation are adequate to
cover the cost of our products. Medicare’s coding, coverage, and payment policies 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
report Current Procedural Terminology, or CPT, codes to receive a professional fee. Surgeons have a choice of
CPT codes to report sole-therapy and concomitant therapy cardiac tissue ablation. At this time, there are no CPT
codes for the physician to report surgical exclusion of the left atrial appendage.

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. It is our understanding that there has
recently been an increase in certain payors declining reimbursement for sole-therapy minimally invasive AF
ablation treatment. Physicians, in combination with their industry organizations and societies, are responding and
working to secure reimbursement for the procedure to the extent the payor has denied reimbursement.

The FDA generally does not regulate the practice of medicine. Doctors may use our products in
circumstances where they deem it medically appropriate, such as for the treatment of AF or the reduction in
stroke risk, even though the FDA may not have approved or cleared our products for those indications. 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.

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. In December 2011,
following FDA approval, we began to market our Synergy System for the treatment of patients with persistent
and long-standing persistent AF during open-heart concomitant coronary artery bypass grafting and/or valve
replacement or repair procedures of AF during open-heart, concomitant procedures. Prior to obtaining the
expanded approval, we marketed the Synergy System under a 510(k) clearance for the ablation of cardiac tissue.
We currently market our minimally invasive clamps in the United States under a 510(k) clearance for the
ablation of cardiac tissue. Our multifunctional pen and multifunctional linear pen are 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. Our cryoablation products are cleared for the
cryosurgical treatment of cardiac arrhythmias. 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. We market our AtriClip system for exclusion of the left atrial
appendage under direct visualization in

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conjunction with other open-heart procedures. Although our Synergy Ablation System received FDA approval
for the treatment of patients with persistent and long-standing persistent AF during open-heart concomitant
coronary artery bypass grafting and/or valve replacement or repair procedures, we may not market our other
products for the treatment of AF or the reduction of stroke without obtaining additional approvals from the FDA.

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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•

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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 approval of 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.

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
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 which we believe did not require us to seek additional 510(k)
clearance.

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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 further 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 application must
be submitted before initiating a new clinical study. Some trials require a feasibility study followed by a pivotal
trial. An IDE supplement is utilized as a means of obtaining approval to initiate a pivotal trial following the
conclusion of a feasibility trial. IDE applications 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 is approved by the FDA and each center’s
Institutional Review Board (IRB) 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
center’s IRB approval is required. Under its regulations, the agency responds to an IDE application (amendment
or supplement) for a new trial within 30 days. The FDA may approve the IDE unconditionally, grant an approval
with certain conditions, or identify deficiencies that must be addressed prior to the approval of the study. It is
common for the FDA to require additional information before approving an IDE, and thus final FDA approval on
a submission commonly extends 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 and centers that may participate. Feasibility trials are typically structured to obtain
information on safety and to evaluate the clinical efficacy to determine the number of subjects required to
demonstrate statistical significance in a pivotal trial.

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’ written 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 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

13

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, but not
necessarily limited to, 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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the 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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During 2011 we submitted sixteen MDRs related to complications during procedures utilizing our products

to the FDA. Of these MDRs, five related to our RF clamps, four related to reusable cryoablation devices, four
related to our AtriClip devices, one related to our multifunctional pen, one related to our cryoablation generator
and one related to our Lumitip dissector. There may have been other incidents, including patient deaths, which
have occurred during procedures utilizing our products, although we are not aware of any such incidents during
the period noted above.

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, among others:

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

•

•

•

•

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

operating restrictions, partial suspension or total shutdown of production;

suspension or termination of our clinical trials;

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.

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

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significant and consist of the imposition of fines and penalties. The FCA also allows a private individual or entity
with knowledge of past or present fraud against the federal government to sue on behalf of the government to
recover the civil penalties and treble damages. The U.S. Department of Justice, or DOJ, on behalf of the
government, has previously alleged that the marketing and promotional practices of pharmaceutical and medical
device manufacturers included the off-label promotion of products or the payment of prohibited kickbacks to
doctors violated the FCA resulting in the submission of improper claims to federal and state healthcare
entitlement programs such as Medicaid. In certain cases, 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.

In October 2008 we received a letter from the DOJ informing us that they were conducting an investigation

for potential FCA and common law violations relating to our surgical ablation devices for the period beginning
January 1, 2005. Other manufacturers of medical devices adopted for the treatment of AF reported receiving
similar letters. Specifically, the letter stated that the DOJ was investigating our marketing practices utilized in
connection with our surgical ablation system to treat AF, a specific use outside the FDA’s 510(k) clearance, and
was also investigating whether we instructed hospitals to bill Medicare for cardiac surgical ablation using
incorrect billing codes. On February 2, 2010, we entered into a settlement agreement with the DOJ, the Office of
Inspector General of the Department of Health and Human Services, or OIG, and Elaine Bennett (also known as
Elaine George), the relator in the related qui tam complaint (the “Relator”), which definitively resolved all claims
related to the DOJ investigation and qui tam complaint, which has been dismissed. We did not and will not admit
wrongdoing in connection with the settlement. Additionally, we entered into a five-year corporate integrity
agreement with the OIG. For a discussion of the terms of the settlement, 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 cannot provide any assurance that regulatory or enforcement authorities will
view these arrangements as being in compliance with applicable laws.

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 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 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

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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. We are compliant with the International Organization for Standardization, (ISO)
13485:2003 Quality Management System. 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 technologies and products 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 the 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 generally 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 products 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. 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, 2011 we had the following portfolio of patents or patent applications covering our

proprietary technologies and products:

•

•

•

•

•

41 issued or approved United States patents expiring between 2015 and 2030;

22 United States non-provisional patent applications;

3 United States provisional patent applications;

11 issued foreign patents; and

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

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Additionally, as of December 31, 2011 we had twelve trademark registrations covering our product

branding.

Manufacturing

We manufacture a substantial majority of the disposable and implantable 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 Synergy 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 any of our supplies from them.
During 2007, we entered into a development, manufacturing and supply agreement with MicroPace Pty Ltd of
Australia to develop, manufacture and supply our ORLab system. Under the terms of the agreement, as amended,
we are obligated to meet certain minimum purchase commitments 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.

As a result of regulatory changes in Europe and the United States, our ASU and ASB are currently
undergoing compliance verification to determine if they meet new medical device safety standards. In Europe,
these new safety standards are effective during the second quarter of 2012. Although we believe our existing
ASU and ASB will meet the revised European safety standards, if they do not, we will not be able to sell or loan
them in Europe. The ASU and ASB are needed to use our disposable RF devices. Similar standards are expected
to become effective in the U.S. during 2013. We are in the process of designing and developing a generator to
replace the current ASU and ASB and anticipate it will be completed and available mid-2013 in Europe and by
the end of 2013 in the U.S.

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. Our
current quality system is developed to comply with QSR and ISO standards.

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During February 2011 the FDA conducted an inspection of our West Chester, Ohio facility and

manufacturing processes. As a result of the inspection, we received a Form FDA 483, Inspectional Observations,
which outlined deficiencies observed by the FDA investigators. We have taken corrective and preventive actions
where appropriate and in October 2011 we received from the FDA an Establishment Inspection Report which
was classified by the FDA as “Voluntary Action Indicated.”

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, as we currently believe we are in
compliance with such laws and regulations, we do not expect that continued compliance will have a material
impact on our business.

Consulting Relationships

We have developed consulting relationships with a number of scientists and doctors throughout the world to

develop our research and development, clinical and training and education teams. We work closely with these
thought leaders to understand unmet needs and emerging applications for the treatment of AF.

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.”

Royalty Agreements

We have certain royalty agreements in place with terms that include payment of royalties based on product

revenue from sales of current products, certain other inventions, improvements or ideas. During 2011 we had
royalty agreements with rates of 5% of product revenue related to our AtriClip system and 1.5% of product
revenue related to our Lumitip dissector. The agreement for the Lumitip dissector also calls for minimum royalty
payments and limits the maximum aggregate in royalties during the term of the agreement. Parties to royalty
agreements have the right at any time to terminate the agreement immediately for cause. Royalty expense for
each of the years ended December 31, 2011, 2010 and 2009 was $0.5 million, $0.3 million and $0.2 million,
respectively.

Employees

As of December 31, 2011 we had approximately 240 full-time employees. None of the employees were

represented by a labor union or covered by a collective bargaining agreement. We have never experienced any
employment-related work stoppages and consider our employee relations to be good although we cannot provide
any assurance that we will not experience such work stoppages in the future.

Available Information

Our principal executive offices are located at 6217 Centre Park Drive, West Chester, Ohio and our

telephone number is 513-755-4100. 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

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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 practicable after they are filed or furnished, as the case may be, 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

If our products do not achieve widespread market acceptance in the United States, our operating results
will be harmed and we may not achieve profitability.

Our success will depend, in large part, on the medical community’s acceptance of our principal products in

the United States, which is the largest revenue market in the world for medical devices. The U.S. medical
community’s acceptance of our products will depend upon our ability to demonstrate the safety and efficacy,
advantages, long-term clinical performance and cost-effectiveness of our products as compared to other products.
In addition, acceptance of 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 products. Market acceptance and
adoption of our products for the treatment of AF also depends on the level of reimbursement to doctors and
hospitals for the use of our products.

We cannot predict whether the U.S. medical community will accept our products or, if accepted, the extent
of their use. Negative publicity resulting from isolated incidents involving our products or other products related
to those we sell could have a significant adverse effect on the overall acceptance of our products. If we encounter
difficulties developing a market for our products in the United States, we may not be able to increase our revenue
enough to achieve profitability, and our business and operating results will be seriously harmed.

We rely on our ablation and ablation related products as our primary sources of revenue. If we are not
successful in selling these products, or if these products become obsolete, our operating results will be
harmed.

Our ablation products, such as our clamps and related products, generate a large majority of our revenue.

We expect that sales of these products will continue to account for a majority of our revenue for the foreseeable
future and that our future revenue will depend on the increasing acceptance by the medical community of our
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. We may not be able to maintain or increase
market acceptance of our products for a number of additional reasons, including those set forth elsewhere in this
“Risk Factors” section. In addition, our products may become obsolete prior to the end of their anticipated useful
lives or we may introduce new products or next-generation products prior to the end of the useful life of a prior
generation, either of which may require us to dispose of existing inventory and related capital instruments and/or
write off their value or accelerate their depreciation. Since we believe that doctors are using our ablation and
ablation related products only for the surgical treatment of AF, if doctors do not use our products to treat AF, we
would lose substantially all of our revenue.

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Current worldwide economic conditions may have reduced demand for procedures using our products or
otherwise resulted in adverse implications on our business, operating results and financial condition.

General worldwide economic conditions deteriorated beginning in late 2007 due to the effects of, among
other developments, 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 and capital spending, adverse business conditions and liquidity concerns. Although there may
be signs of an improving economic environment, the deteriorated economic environment continues and may
continue for the next several years. Because many procedures using our products are elective, they can be
deferred by patients. In addition, patients may not be as willing under current economic conditions 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.

Beyond patient demand, any continuing 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 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 any continuing 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 U.S. and internationally could harm our business. Some health care providers in the U.S.
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. Some
healthcare providers have sought to consolidate and create new companies with greater market power, including
hospitals. As the healthcare industry consolidates, competition to provide products and services has become and
will continue to become more intense. This has resulted and likely will continue to result in greater pricing
pressures and the exclusion of certain suppliers from important marketing segments.

We face significant uncertainty in the industry due to government healthcare reform.

The Patient Protection and Affordable Care Act, as amended, (the “Patient Act”) as well as other healthcare
reform may have a significant impact on our business. The impact of the Patient Act on the health care industry
is extensive and includes, among other things, the federal government assuming a larger role in the health care
system, expanding healthcare coverage of United States citizens and mandating basic healthcare benefits. In
addition, any health care reforms enacted in the future may, like the Patient Act, be phased in over a number of
years but, if enacted, could reduce our revenue, increase our costs, or require us to revise the ways in which we
conduct business or put us at risk for loss of business. In addition, our results of operations, financial position and
cash flows could be materially adversely affected by changes under the Patient Act and changes under any
federal or state legislation adopted in the future.

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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.

Restrictions in our ability to train doctors in the use of our products could reduce the market acceptance
of our products or result in injuries to patients or other adverse events that could possibly lead to litigation
that could harm us or could reduce our revenue.

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 products. While we educate and train doctors as to the skills
involved in the proper use of our products, it is not our policy to educate or train them to use any products for the
surgical treatment of AF, unless the product is approved for the treatment of AF. Until December 2011 doctors
learned to use our products for the treatment of AF through independent training programs sponsored by
hospitals and universities and through independent peer-to-peer training among doctors. In December 2011 our
Synergy System was cleared for the treatment of certain AF patients during certain open-heart procedures. We
are initiating a comprehensive physician training program to train all existing users of the Synergy System over
an eighteen month period as well as a training and education program for all new users on the use of our Synergy
System. 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 to obtain training for themselves or to train others
in the use of our products. In addition, our inability to directly train doctors in off-label use exposes us to a risk
that our products may not be used correctly and may also expose us to a greater risk of product liability for
injuries sustained during procedures utilizing our products.

Unless and until we obtain additional FDA approval for our products, we will not be able to promote many
of our products to treat AF or the reduction in stroke risk, and our ability to maintain and grow our
business could be harmed.

Although our Synergy System recently received FDA approval for the treatment of AF for certain patients

and certain procedures, we have not received FDA clearance or approval to promote many of our products for the
treatment of AF or the reduction in stroke risk. See “Business—Government Regulation.” Unless and until we
obtain FDA clearance or approval for the use of our products for the treatment of AF or reduction in stroke risk
we, and others acting on our behalf, may not promote our 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 products will be
granted or that current or future clearances or approvals 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 and until we are able to complete the clinical trials required to support future submissions to the
FDA, and unless and until the data generated by such trials supports the use of our products as safe and
effective for the treatment of AF or reduction in stroke risk, 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 additional FDA approvals to promote our products for the treatment of AF or reduction in
stroke risk, we will need to demonstrate in clinical trials that our products are safe and effective for such use. We
cannot assure you that any of our clinical trials will be completed in a timely manner or successfully or that the
results obtained will be acceptable to the FDA. In addition, if the results obtained from our clinical trials, any
other clinical studies, or clinical or commercial experience indicate that any of our products are not safe or

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effective, or not as safe or effective as other treatment options, the FDA may not approve our products for the
treatment of AF or reduction in stroke risk, adoption of the use of our products 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 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 and the publication of articles concerning our products failed to adequately disclose their
financial relationships with us and our previously settled DOJ investigation. We believe that this publicity has
had and may continue to have a negative impact on our clinical studies, business, results of operations and
financial condition. We also believe that future unfavorable publicity could cause other adverse effects, including
a decline in the price of our stock.

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 or
reduction in stroke risk, which, with the exception of our Synergy System’s recent AF approval, are considered
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. Unless the products are FDA cleared, we may not make claims
about the safety or effectiveness of our products for the treatment of AF or reduction in stroke risk 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.

These limitations present a material risk that the FDA or other federal or state law enforcement authorities

could determine that the nature and scope of our sales, marketing and/or product support activities, though
designed to comply with all FDA requirements, 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. Investigations
concerning the promotion of off-label uses and related issues, including our settlement with the DOJ (see further
discussion in Item 3, “Legal Proceedings” of this Form 10-K), are typically expensive, disruptive and
burdensome and generate negative publicity. If our promotional activities are found to be in violation of the law,
we may face significant fines and penalties and may be required to substantially change our sales, promotion,
grant and educational activities. There is also a possibility that we could be enjoined from selling some or all of
our products for any non-FDA approved use. In addition, as a result of an enforcement action against us or our
executive officers, we could be excluded from participation in government healthcare programs such as Medicare
and Medicaid. Also, our failure to comply with the terms of the settlement agreement with the DOJ or the related
corporate integrity agreement could result in additional action by the DOJ or the OIG, in fines or penalties or in
restrictions on our sales, promotion, grant or educational activities.

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’ businesses.

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 products were

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used. 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 participants, injury to our reputation and
loss of revenue. Any of these events could negatively affect our earnings and financial condition.

Competition from existing and new products and procedures may decrease our market share and cause
our revenue 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
its participants. We cannot assure you that our products will compete effectively against drugs, catheter-based
ablation, implantable devices, other ablation systems, other products or techniques to exclude the left atrial
appendage, or other surgical AF treatments, which may be more well-established among doctors and hospitals.
We anticipate that new or existing competitors may develop competing products, procedures and/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. Some of our competitors have greater financial, manufacturing, marketing and
research and development capabilities than we have or may obtain FDA approval for the use of their products
before we do. The introduction of new products, procedures, clinical solutions or our competitors obtaining FDA
approvals may result in price reductions, reduced margins or loss of market share and may render our products
obsolete, which could adversely affect our net revenue 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 generally entered into confidentiality agreements and
intellectual property assignment agreements with our employees, consultants, investigators and advisors, such
agreements may be breached, 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. Additionally, as is common in the medical device industry, some of these individuals were
previously employed at other medical equipment or biotechnology companies, including our competitors.
Although no claims are currently pending against us, we may be subject to claims that these individuals or we
have inadvertently or otherwise used or disclosed trade secrets or other proprietary information of their former
employers.

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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 extensive litigation and administrative proceedings over
patent and other intellectual property rights 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.

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. Litigation also puts our patent applications at risk of being rejected and our patents at risk of being
invalidated or interpreted narrowly, and may provoke third parties to assert claims against us. Any of these
events could negatively affect our earnings and financial condition.

In the event of a patent dispute, 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 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.

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 history of net losses and we may never become profitable.

We have incurred net losses each year since our inception, including net losses of $5.5 million in 2011, $3.8

million in 2010, $16.5 million in 2009, $10.2 million in 2008, $11.3 million in 2007, $13.7 million in 2006 and
$12.7 million in 2005. As of December 31, 2011, we had an accumulated deficit of $103.2 million.

Our net losses have resulted principally from costs and expenses relating to sales and promotional efforts,

research and development, seeking regulatory clearances and approvals, goodwill impairment, litigation and
settlement costs associated with the DOJ investigation and general operating expenses. We expect to continue to
make substantial expenditures and to potentially 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

25

succeed in increasing our revenue sufficiently to offset these higher expenses. Our losses have had, and are
expected to continue to have, an adverse impact on our working capital, total assets and accumulated deficit, and
we may never become profitable.

Our federal tax net operating loss and general business credit carryforwards generated prior to the initial
public offering of our common stock will be limited or may expire, which could result in greater future
income tax expense and adversely impact future cash flows 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 Section 382 of the Internal Revenue Code of 1986. Section 382 imposes limitations (“Section 382
limitation”) on a company’s ability to use net operating loss and general business credit carryforwards if a
company experiences a more-than-50-percent ownership change over a three-year testing period. The
Section 382 limitation could limit the availability of our net operating loss and general business credit
carryforwards to offset any future taxable income, which may increase our future income tax expense and
adversely impact future cash flows. We had federal income tax net operating loss and general business credit
carryforwards at August 5, 2005 that, if not utilized to reduce our taxable income, will begin to expire in 2021. In
addition, if the company were to experience a second ownership change of more than 50 percentage points in a
future period, the company’s NOL carryforward at the date of the original ownership change would be subject to
a second Section 382 limitation. In addition, the company’s NOLs generated subsequent to the original
ownership change would be subject to the second Section 382 limitation. Since December 31, 2005 the company
has generated additional net operating loss and general business credit carryforwards of $35.7 million and $2.4
million, respectively, which, if not utilized to reduce our taxable income, will begin to expire in 2026.

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, cash equivalents and investments, including additional cash generated
from a 2012 amendment to our credit facility, will be sufficient to meet our projected capital requirements for at
least the next 12 months. Our current loan agreement (the “Agreement”) with Silicon Valley Bank (the “Bank”),
as amended, includes a term loan and a revolving credit facility under which we can borrow a maximum of $20
million. We have borrowed the maximum amount of $10 million under the term loan. We can borrow the lesser
of the amount available pursuant to a borrowing base formula and $10.0 million under the revolving loan facility.
Based on our current borrowing base, we have availability of approximately $7.0 million. The Agreement is
secured by all of our assets, including intellectual property, and the term loan and revolving loan mature on
February 1, 2017 and April 30, 2014, respectively. Interest on the term loan accrues at a rate of 6.75% per year,
and interest on the revolving loans will accrue at a fluctuating rate equal to the Bank’s announced prime rate of
interest plus between 0.25% and 1.25%, depending on our Liquidity Ratio (as defined in the Agreement).

We may be unable to comply with the covenants of our credit facility.

Our Agreement contains covenants that include, among others, covenants that limit our ability to dispose of
assets, enter into mergers or acquisitions, incur indebtedness, incur liens, pay dividends or make distributions on
our capital stock, make investments or loans, and enter into certain affiliate transactions, in each case subject to
customary exceptions for a credit facility of this size and type. Additional covenants apply when we have
outstanding borrowings under the revolving loan facility or when we achieve specific covenant milestones. The
occurrence of an event of default could result in an increase to the applicable interest rate by 3.0%, an
acceleration of all obligations under the Agreement, an obligation to repay all obligations in full, and a right by
the Bank to exercise all remedies available to it under the Agreement and related agreements including the
Guaranty and Security Agreement. If we are unable to pay those amounts, the Bank could proceed against the
collateral granted to it pursuant to the credit facility.

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If we need to raise additional funds, 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.

We depend upon single and limited source third-party suppliers and third-party logistics providers,
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. It
would be a time consuming and lengthy process to secure these products from an alternative supplier. 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. We also rely on a third party to handle our warehousing and logistics functions
for EMEA markets on our behalf and a single supplier (a CRO), to administer our clinical trials and related
activities.

Our reliance on 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 or a replacement warehousing and logistics provider, 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,
materials or warehousing and logistics, 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. Any disruption to our relationship with our CRO could
result in a delay in our clinical trials, which could also delay product approvals.

Additionally, as a result of regulatory changes in Europe and the United States, our ASU and ASB are
currently undergoing compliance verification to determine if they meet new medical device safety standards. In
Europe, these new safety standards are effective during the second quarter of 2012. Although we believe our
existing ASU and ASB will meet the revised European safety standards, if they do not, we will not be able to sell
or loan them in Europe. The ASU and ASB are needed to use our disposable RF devices. Similar standards are
expected to become effective in the U.S. during 2013. We are in the process of designing and developing a

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generator to replace the current ASU and ASB and anticipate it will be completed and available mid-2013 in
Europe and by the end of 2013 in the U.S. If the existing generator is not available and our existing ASU and
ASB do not meet the revised safety guidelines, it would have a material and substantial impact on the sale of RF
devices in both the U.S. and Europe.

An inability to forecast future revenue 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 choose to maintain excess inventory of our products or
component parts. Managing our inventory levels is important to our cash position and results of operations and is
more challenging in the current economic environment. 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. While we rely on our information technology systems for inventory management and to
effectively manage accounting and financial functions, our information technology systems may fail to
adequately perform these functions or may experience an interruption. 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 revenue.
An inability to forecast future revenue or estimated life cycles of products may result in inventory-related charges
that would negatively affect our gross margins and results of operations.

During 2011 we experienced a substantial increase in our manufacturing costs, primarily overhead,

manufacturing inefficiencies and scrap expense, which had a negative impact on our gross margin. While we are
working to implement improvements to reduce our scrap rates and improve our manufacturing efficiencies, if we
are unable to do so, our gross margins will continue to be negatively impacted by these increased manufacturing
expenses, which may result in increased net losses.

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 System regulation, 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 we sell. The FDA may evaluate our compliance
with the QSR, among other ways, through periodic announced or unannounced inspections which could disrupt
our operations and interrupt our manufacturing. If in conducting an inspection of our manufacturing facility or
the manufacturing facility of any of our third-party component manufacturers, critical suppliers or third-party
sterilization facility, FDA investigators observe conditions or practices believed to violate the QSR, the
investigators may document their observations on a Form FDA-483 that is issued at the conclusion of the
inspection. A manufacturer that receives an FDA-483 may respond in writing and explain any corrective actions
taken in response to the inspectional observations. The FDA will typically review the facility’s written response
and may re-inspect to determine the facility’s compliance with the QSR and other applicable regulatory
requirements. Failure to take adequate and timely corrective actions to remedy objectionable conditions listed on
an FDA-483 could result in the FDA taking administrative or enforcement actions. Among these may be the
FDA’s issuance of a Warning Letter to a manufacturer, which informs it that the FDA considers the observed
violations to be of “regulatory significance” that, if not corrected, could result in further enforcement action.
FDA enforcement actions—which include seizure, injunction and criminal prosecution—could result in total or
partial suspension of a facility’s production and/or distribution, product recalls, fines, suspension of the FDA’s
review of product applications and the FDA’s issuance of adverse publicity. Thus, an adverse inspection could
force a shutdown of our manufacturing operations or a recall of our products. Adverse inspections could also
delay FDA approval of our products and could have an adverse effect on our production, sales and profitability.

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During February 2011, in connection with an inspection of our West Chester, Ohio facility, the FDA issued
a Form FDA-483, which outlined deficiencies observed by the FDA investigators. We have formally responded
in writing to the FDA and taken other corrective and preventative actions. During October 2011 we received
from the FDA an Establishment Inspection Report and the FDA has noted “voluntary action indicated.” While
we believe we have addressed the findings in the Form 483 and will remain in good standing with the FDA, our
actions are subject to the FDA’s verification, and, if the FDA does not verify our actions, we could receive a
warning letter and/or be subject to any of the sanctions described above, among others. These sanctions, if
imposed, could materially harm our operating results and financial condition.

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;

pre-clinical laboratory and animal testing;

clinical trials in humans;

product safety, effectiveness and quality;

product manufacturing, storage and distribution;

pre-market 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.

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If a serious failure to comply with applicable regulatory requirements was determined, it could result in
enforcement action by the FDA or other state or federal agencies, including the DOJ, which may include any of
the following sanctions, among others:

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

•

•

•

•

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

operating restrictions, partial suspension or total shutdown of production;

suspension or termination of our clinical trials;

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

•

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.

Modifications to our products may require new clearances or approvals or require us to cease promoting
or to recall the modified products until such clearances or approvals are obtained and the FDA may not
agree with our conclusions regarding whether new clearances or approvals were required.

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 made modifications to our products
but do not believe such modifications required us to submit an additional 510(k). The FDA may not agree with
our decisions regarding whether new clearances or approvals were required. For example, at the time our Isolator
clamps received 510(k) clearance for the ablation of cardiac tissue, through our internal and external regulatory
review process, we determined that a new 510(k) was not needed for our Isolator Synergy clamps to change their
intended use from the ablation of soft tissue to the ablation of cardiac tissue. The FDA reviewed this decision and
indicated that a 510(k) was required to be filed for us to market our Isolator Synergy clamps for cardiac tissue
ablation instead of soft tissue ablation. During 2010 we filed a 510(k) and received clearance in November 2010
to market our Isolator Synergy clamps for the ablation of cardiac tissue.

If the FDA disagrees with us and requires us to submit a new 510(k), PMA or a different type of PMA
supplement for then existing modifications, we may be required to cease promoting or to recall the modified

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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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•

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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, which
protects medical records and other personal health information by limiting their use and disclosure,
giving individuals the right to access, amend and seek accounting reasonably necessary to accomplish
the intended purpose, and, although we are not a covered entity under HIPAA, as a business associate of
covered entities through our contractual agreements with them, we are required to implement and
maintain policies, procedures and reasonable and appropriate security measures to protect individually
identifiable health information we receive from covered entities;

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

similar and other regulations outside the United States.

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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. In October 2008, the DOJ initiated an investigation of our marketing and
promotional practices. Although we admitted to no wrongdoing and believe there was no wrongdoing on the part
of us or our employees, during 2010 this investigation resulted in a financial settlement of $4.4 million (which
includes interest based on payment terms). Additionally, we incurred substantial legal costs through the
investigation and settlement process.

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 Medicare, 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.

Adverse changes in payors’ policies toward coverage and reimbursement for surgical AF treatment would
harm our ability to promote and sell our 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 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
(other than the Synergy System for its cleared indications) 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 revenue.

We have limited long-term clinical data regarding the safety and efficacy of our 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.

Important factors upon which the efficacy of our products will be measured include long-term data on the

number of patients that continue to experience AF or stroke following treatment with our products and the

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number of patients that have serious complications resulting from AF treatment or stroke reduction using our
products. Our clinical trials may produce limited data regarding the efficacy of our products 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 because it may not be scientifically meaningful and
may not demonstrate that procedures utilizing our products are an attractive option when compared against data
from alternative procedures and products. In addition, the long-term effects of ablation system procedures and
left atrial appendage exclusion are not known. Negative long-term data would affect the use of our products and
harm our business and prospects.

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 revenue 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 failure, or the failure of our distributors, 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, or if any of these countries are affected by a
natural disaster or other catastrophe, our ability to conduct our international operations or collect on international
accounts receivable could be limited and our 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, but not limited to:

•

•

•

•

•

•

•

•

•

•

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;

consequences arising from natural disasters and other similar catastrophes, such as hurricanes, tornados,
earthquakes, floods and tsunamis;

potentially adverse tax consequences, tariffs and other trade barriers;

the need to hire additional personnel to promote our products 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.

In addition, our business practices in foreign countries comply with U.S. law, including the Foreign Corrupt

Practices Act (“FCPA”). We have a compliance program in place designed to reduce the likelihood of potential
violations of the FCPA and other U.S. laws. If violations were to occur, they could subject us to fines and other
penalties as well as increased compliance costs.

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.

33

Our manufacturing operations are conducted at a single location, and any disruption at our
manufacturing facility could increase our expenses.

All of our manufacturing operations are conducted at a single location in West Chester, Ohio. While we take

precautions at this location, we do not maintain a backup manufacturing facility, making us dependent on our
current facility for the continued operation of our business. A natural or other disaster could cause substantial
delays in our manufacturing operations, damage or destroy our manufacturing equipment and cause us to incur
additional expenses. The insurance we maintain may not be adequate to cover our losses in any particular case.
With or without insurance, damage to our facility or our other property, due to a natural disaster or casualty
event, could have a material adverse effect on our business, financial condition and results of operations.

We rely on independent distributors to market and sell our products in certain markets outside of the
United States, and a failure of our independent distributors to successfully market our products in these
markets or any disruption in their ability to do so may adversely impact our sales.

We depend on third-party distributors to sell our products in certain markets outside of the United States and

if these distributors do not perform, we may be unable to increase or maintain our level of international revenue.
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 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 or direct personnel.
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. The ability of these third-party distributors to market and sell our products
could also be adversely affected by unexpected events, including, but not limited to, power failures, nuclear
events, natural or other disasters and war or terrorist activities. 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 products outside of the United States may
decrease and we may fail to achieve or maintain significant sales outside of the United States.

Our revenue generated from sales outside of the United States is 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 and related products. 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 products, and these efforts are
expected to continue. To the extent that the use of an ablation device such as our Isolator clamp has historically
received reimbursement under a foreign healthcare payment system, if any, such reimbursement, if any, 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 products outside of the United States may decrease and we may fail to achieve or
maintain significant sales outside of the United States.

34

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 certain other officers and key 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 Chief Executive Officer, Chief Financial Officer, Chief Operating Officer and Vice President, General
Manager International, 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 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 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 can be 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 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.

35

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 have and has had a history of substantial fluctuation due
to a variety of factors, including, but not limited to:

•

•

•

•

•

•

doctor and patient acceptance of the surgical treatment of AF or reduction in stroke risk using our
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, 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 and
Financial Industry Regulatory Authority;

• 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;

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 revenue 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.

36

The ownership of our common stock is highly concentrated. Your interests may conflict with the interests
of our existing stockholders and sales of a significant number of shares may cause our stock price to
decline.

Our executive officers and directors and their affiliates beneficially owned approximately 30% of our
outstanding common stock as of December 31, 2011. Accordingly, these stockholders have significant influence
over the outcome of corporate actions requiring stockholder approval. The interests of these stockholders may be
different than the interests of other stockholders on these matters. This concentration of ownership could also
have the effect of delaying or preventing a change in our control or otherwise discouraging a potential acquirer
from attempting to obtain control of us, which, in turn, could reduce the price of our common stock. If our
common stockholders sell substantial amounts of our common stock in the public market, through a registration
statement or otherwise, or the market perceives that such sales may occur, the market price of our common stock
could decline.

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 or new initiatives. 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
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.

37

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 (the “Exchange Act”), and the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act”). We are also
subject to certain provisions of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (the
“Dodd-Frank 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 is
required. While the Dodd-Frank Act requires the SEC to adopt certain rules and regulations relating to our public
disclosures, corporate governance and executive compensation, among other things, we expect such rules and
regulations will require significant attention from management. Compliance with all of these laws, rules and
regulations 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

The Company maintains its headquarters in West Chester, Ohio in a facility of approximately 29,100 square
feet, which contains office space in addition to space for other technical and support functions and manufacturing.
The monthly rent for this space is approximately $26,700. In addition, the Company has two leases in West Chester,
Ohio totaling 22,300 square feet of manufacturing, distribution and office space. The Company currently pays
monthly rent for these properties of approximately $12,800. All West Chester leases will expire in August 2013.
Internationally, the Company maintains office space in the Netherlands. The monthly rent for this lease is
approximately $8,400 and the lease will expire in October 2013. The Company believes that its existing facilities are
adequate to meet its immediate needs and that suitable additional space will be available in the future on
commercially reasonable terms as needed.

ITEM 3. LEGAL PROCEEDINGS

The Company is not party to any material pending or threatened litigation. We may from time to time

become a party to additional legal proceedings.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

38

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 2011 and 2010:

2011
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
First Quarter
Second Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fourth Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2010
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
First Quarter
Second Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fourth Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Price Range

High

Low

$11.52
$14.50
$14.44
$12.17

$ 9.62
$11.58
$ 9.05
$ 8.54

Price Range

High

Low

$ 6.12
$ 6.76
$ 8.60
$10.27

$ 4.56
$ 4.84
$ 6.05
$ 7.89

As of March 1, 2012, the closing price of our common stock on the NASDAQ Global Market was $10.32

per share, and the number of stockholders of record was 50.

Dividend Policy

The Company has not declared or paid any dividends on its capital stock since incorporation. Furthermore,

pursuant to the credit facility, the Company is currently subject to certain restrictions on its ability to pay
dividends. The Company currently expects to retain future earnings, if any, for use in the operation and
expansion of the business and does not anticipate paying any cash dividends in the foreseeable future.

39

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 January 1, 2007 and ending on December 31, 2011.

COMPARISON OF 5 YEAR 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

1/07

12/07

12/08

12/09

12/10

12/11

ATRICURE, INC.

NASDAQ COMPOSITE

NASDAQ MEDICAL EQUIPMENT

*$100 invested on 1/1/07 in stock or index, including reinvestment of dividends.
Fiscal year ending December 31.

* This graph assumes that $100.00 was invested on January 1, 2007 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 . . . . . . . . . . . . . . . . . . . . . . .

$146.64
$110.26
$136.67

$24.83
$65.65
$74.41

$ 67.56
$ 95.19
$101.38

$114.88
$112.10
$108.94

$124.16
$110.81
$122.28

12/31/07

12/31/08

12/31/09

12/31/10

12/31/11

40

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, 2011, 2010 and
2009 and the balance sheet data as of December 31, 2011 and 2010 are derived from our audited financial
statements included in this Form 10-K. The statement of operations data for the years ended December 31, 2008
and 2007 and the balance sheet data as of December 31, 2009, 2008 and 2007 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:
Revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gross profit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gross margin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other (expense) income . . . . . . . . . . . . . . . . . . . . . . . . .
Income tax expense (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 . . . . . . . . . . . . . . . . .
Accumulated deficit . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stockholders’ equity . . . . . . . . . . . . . . . . . . . . . . . . . . .

Year Ended December 31,

2011

2010

2009(1)

2008

2007

(in thousands, except per share data)

$ 64,402
17,406
46,996

$ 59,006
13,618
45,388

$ 54,534
12,751
41,783

$ 55,257
13,225
42,033

$ 48,309
10,137
38,172

73.0%

76.9%

76.6%

76.1%

79.0%

51,727
(694)
31
(5,456)
(0.35)
15,672

48,580
(581)
19
(3,792)
(0.25)
15,095

57,295
(1,042)
(59)
(16,495)
(1.13)
14,564

53,031
774
(57)
(10,167)
(0.72)
14,191

50,740
1,315
—
(11,253)
(0.84)
13,382

$ 14,183

$ 12,571 $ 15,722

—
20,384
33,859
4,926
(103,217)
15,615

—
17,613
33,716
662
(97,762)
16,736

—
19,545
34,982
2,670
(93,970)
17,090

$ 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

(1) As a result of a reduction in our market capitalization during the first quarter of 2009, we believed an
indication of impairment existed and, as such, performed an interim analysis of our goodwill as of
March 31, 2009 as required by FASB Accounting Standards Codification (“ASC”) 350, “Goodwill and
Other Intangible Assets” (“ASC 350”). The analysis concluded that the carrying value of our goodwill
exceeded the estimated fair value, and, as such, a full impairment loss of $6.8 million was recognized during
2009. Also during 2009, we recorded $4.0 million in expense related to a settlement with the DOJ.
See Note 10, “Commitments and Contingencies,” to our Consolidated Financial Statements.

41

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 Item 1A “Risk Factors,”
the cautionary statement regarding forward-looking statements at the beginning of Part I and elsewhere in this
Form 10-K.

Results of Operations

Year Ended December 31, 2011 compared to December 31, 2010

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

amounts and as percentages of total revenue:

Year Ended December 31,

2011

2010

Amount

% of
Revenue

Amount

% of
Revenue

Revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$64,402
17,406

(dollars in thousands)
100.0% $59,006
27.0% 13,618

100.0%
23.1%

Gross profit
Operating expenses:

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

46,996

73.0% 45,388

76.9%

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

Total operating expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss from operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other expense:

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

Other expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11,857
39,870

51,727
(4,731)

18.4% 11,531
61.9% 37,049

80.3% 48,580
-7.3% (3,192)

(814)
16
104

(694)

-1.2%
0.0%
0.1%

-1.1%

(862)
22
259

(581)

Loss before income tax expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Income tax expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(5,425)
31

-8.4% (3,773)
19
-0.1%

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

$ (5,456)

-8.5% $ (3,792)

19.5%
62.8%

82.3%
-5.4%

-1.5%
0.1%
0.4%

-1.0%

-6.4%
0.0%

-6.4%

Revenue. Revenue increased $5.4 million, or 9.1% (8.5% on a constant currency basis), from $59.0 million
in 2010 to $64.4 million in 2011. Revenue from sales to customers in the United States increased $1.4 million, or
3.0%, and revenue from sales to international customers increased $4.0 million, or 34.7% (31.1% on a constant
currency basis). The increase in sales to customers in the United States was primarily due to increased sales of
the AtriClip system of $3.2 million, a new product offering that was released at the end of the second quarter of
2010. This increase was partially offset by a reduction in revenue from ablation-related products, which we
believe was primarily due to a reduction in minimally invasive standalone cardiac ablation procedures. The
increase in international revenue was primarily due to:

•

an increase in sales to European customers, primarily in our direct markets, including the benefit of
transitioning the Benelux region to a direct market during the third quarter of 2010;

42

•

•

an increase in sales in Asia; and

foreign currency exchange fluctuations.

Cost of revenue and gross margin. Cost of revenue increased $3.8 million, from $13.6 million in 2010 to
$17.4 million in 2011. The increase in cost of revenue was primarily due to an increase in revenue, an increased
mix of capital equipment sales, an increase in scrap and manufacturing variances and costs associated with the
discontinuance of manufacturing our Coolrail and Cryo1 devices. As a percentage of revenue, cost of revenue
increased from 23.1% for the year ended December 31, 2010 to 27.0% for the year ended December 31, 2011.
Gross margin for 2011 and 2010 was 73.0% and 76.9%, respectively. The decrease in gross margin was primarily
due to:

•

•

•

•

increased manufacturing costs, scrap and inefficiencies driven primarily by new products and the
anticipation of transitioning to the manufacturing of PMA approved products;

an increased mix of AtriClip and disposable cryo ablation device sales, which have lower gross margins
than our other single-use products;

costs associated with the discontinuance of the manufacturing of our Coolrail and Cryo1 devices, which
have been replaced with our Multifunctional Linear Pen and cryoICE devices, respectively; and

an increased mix of international sales.

Research and development expenses. Research and development expenses increased $0.3 million, from

$11.5 million in 2010 to $11.9 million in 2011. As a percentage of revenue, research and development expenses
decreased from 19.5% in 2010 to 18.4% in 2011. The increase in research and development expenses was
primarily due to:

•

•

•

a $0.9 million increase in third party clinical and regulatory consulting costs, due primarily to an
increase in clinical and regulatory activities;

a $0.4 million increase in clinical trial spending, primarily due to an increase in enrollment related
expense related to the DEEP AF and ABLATE AF clinical trials during 2011; and

a $0.9 million reduction in external product design and development expenses, due primarily to a
reduction in development and research related activities and new product introductions as compared to
2010.

Selling, general and administrative expenses. Selling, general and administrative expenses increased $2.8
million, or 7.6%, from $37.0 million in 2010 to $39.9 million in 2011. The increase was primarily attributable to
a $2.4 million increase in sales and marketing expenses, primarily due to a $2.0 million increase in headcount-
related and travel expenses driven by an increase in average worldwide sales and marketing headcount of seven
sales and marketing personnel in support of our growth initiatives.

Net interest expense. Net interest expense was $0.8 million for 2011 and 2010. Net interest expense
primarily represents interest expense related to amounts outstanding on our term loan, amortization of the debt
discount related to the warrants issued in conjunction with the term loan and amortization of debt issuance costs.

Other income (expense). Other income (expense) consists primarily of foreign currency transaction gains
(losses), grant income and non-employee option expense related to the fair market value change for fully vested
options outstanding for consultants which are accounted for as free-standing derivatives. In 2011, other income
of $0.1 million included:

•

•

•

$51,689 of grant income;

$30,081 of income related to foreign currency transaction gains; and

$22,649 for certain non-employee option income due to a decrease in the fair market value of the
options.

43

In 2010, other income of $0.3 million included:

•

•

•

$0.6 million of grant income, primarily due to a non-recurring, one-time grant from the United States
Internal Revenue Service of $0.5 million;

$0.2 million of expenses related to foreign currency transaction losses, due to partial settlements of
intercompany balances; and

$0.2 million for certain non-employee option expenses due to an increase in the fair market value of the
options.

Year Ended December 31, 2010 compared to December 31, 2009

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

amounts and as percentages of total revenue:

Year Ended December 31,

2010

2009

Amount

% of
Revenue

Amount

% of
Revenue

Revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$59,006
13,618

(dollars in thousands)
100.0% $ 54,534
23.1% 12,751

100.0%
23.4%

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

45,388

76.9% 41,783

76.6%

Research and development expenses . . . . . . . . . . . . . . . . . . . . . . . .
Selling, general and administrative expenses . . . . . . . . . . . . . . . . . .
Goodwill impairment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Settlement reserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11,531
37,049
—
—

19.5% 11,415
62.8% 35,113
6,812
—
3,955
—

20.9%
64.4%
12.5%
7.3%

Total operating expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss from operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other expense:

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

Other expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

48,580
(3,192)

82.3% 57,295
-5.4% (15,512)

105.1%
-28.4%

(862)
22
259

(581)

-1.5%
0.1%
0.4%

(812)
51
(281)

-1.0% (1,042)

-1.5%
0.1%
-0.5%

-1.9%

Loss before income tax expense (benefit) . . . . . . . . . . . . . . . . . . . . . . . .
Income tax expense (benefit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(3,773)
19

-6.4% (16,554)
(59)
0.0%

-30.4%
-0.1%

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

$ (3,792)

-6.4% $(16,495)

-30.2%

Revenue. Revenue increased $4.5 million, or 8.2%, from $54.5 million in 2009 to $59.0 million in 2010.
Revenue from sales to customers in the United States increased $3.4 million or 7.7% and revenue from sales to
international customers increased $1.1 million or 10.3%. The increase in sales to customers in the United States
was primarily due to increased sales of our disposable cryoablation devices of $2.5 million (a new product
offering that was initially released at the end of the first quarter of 2009) and sales of the AtriClip system of $2.4
million (a new product offering that was released at the end of the second quarter of 2010). International revenue
increased $1.1 million, primarily due to an increase in sales to European customers due to new products
(cryoablation products and the AtriClip system), increased market penetration, particularly in direct markets, and
an increase in average selling prices (due to increased growth from direct markets as well as the transition of the
Benelux market to a direct market). Neutralizing the impact of foreign currency exchange rate fluctuations, total
revenue increased 8.9% as compared to the reported 8.2%, and international revenue grew 14.0% as compared to
the reported 10.3%.

44

Cost of revenue. Cost of revenue increased $0.9 million, from $12.8 million in 2009 to $13.6 million in

2010. The increase in cost of revenue was primarily due to an increase in revenue. As a percentage of revenue,
cost of revenue decreased from 23.4% for the year ended December 31, 2009 to 23.1% for the year ended
December 31, 2010. The decrease in cost of revenue as a percentage of revenue was primarily due to an increase
in average selling prices for products sold internationally, partially offset by an increase in revenue from newer
products which have a higher product cost as a percentage of revenue than our existing products.

Research and development expenses. Research and development expenses increased $0.1 million, from

$11.4 million in 2009 to $11.5 million in 2010. As a percentage of revenue, research and development expenses
decreased from 20.9% in 2009 to 19.5% in 2010. Expenses related to clinical and regulatory activities, including
third party consulting costs and costs associated with clinical trial enrollment, increased $1.3 million. The
increase was primarily due to:

•

•

•

a $1.9 million increase in third party clinical and regulatory consulting costs due to transitioning to a
third party to manage most of our clinical and regulatory activities;

a $0.4 million reduction in clinical trial enrollment related expenses primarily due to a reduction in
enrollment related expense related to the EXCLUDE clinical trial during 2010 as compared to 2009; and

a $1.0 million reduction in product development and research related expenses in 2010 as compared to
2009 due primarily to a reduction in personnel related costs and third party consulting costs.

Selling, general and administrative expenses. Selling, general and administrative expenses increased $1.9

million, from $35.1 million in 2009 to $37.0 million in 2010. The increase was primarily due to:

•

•

•

a $2.9 million increase in headcount-related and travel expenses due to an increase in average headcount
of approximately ten percent (or approximately twenty people), primarily associated with an increase in
sales and marketing personnel;

a $0.9 million reduction in legal expenses due to resolution of the DOJ investigation and a related class
action lawsuit; and

a $0.8 million reduction in share-based compensation due primarily to a large non-recurring expense of
$0.6 million in 2009.

Goodwill impairment. As a result of a reduction in our market capitalization during the first quarter of
2009, we believed an indication of impairment existed and we performed an interim analysis of our goodwill as
of March 31, 2009. The analysis concluded that the carrying value of our goodwill exceeded the estimated fair
value and we recognized a full impairment loss of $6.8 million as of March 31, 2009.

Settlement reserve. During 2009, in conjunction with the DOJ investigation and related qui tam complaint

we recorded a settlement reserve of $4.0 million, which represents the net present value of the settlement amount.
See Note 10, “Commitments and Contingencies,” to our Consolidated Financial Statements.

Net interest expense. Net interest expense was $0.8 million for 2010 and 2009. Net interest expense for
2009 included $0.1 million in expense associated with the write-off of deferred financing costs in connection
with the termination of a credit facility and interest expense and warrant amortization associated with the partial
year of a new credit facility, which was entered into effective May 1, 2009. Net interest expense increased during
2010 as a result of an increase in average net debt outstanding for the year, partially offset by the non-recurring
$0.1 million write-off of deferred financing fees during 2009.

Other income. Other income consists of foreign currency transaction losses, grant income and

non-employee option expense related to the fair market value change for fully vested options outstanding for
consultants which are accounted for as free-standing derivatives. In 2010, other income of $0.3 million included:

•

$0.6 million of grant income, primarily due to a non-recurring, one-time grant from the United States
Internal Revenue Service of $0.5 million;

45

•

•

$0.2 million of expenses related to foreign currency transaction losses, due to partial settlements of
intercompany balances; and

$0.2 million for certain non-employee option expenses due to an increase in the fair market value of the
options.

In 2009, other expense of $0.3 million included:

•

•

$0.2 million related to foreign currency transaction losses associated with partial settlements of
intercompany balances; and

$0.1 million of certain non-employee option expense due to an increase in the fair market value of the
options.

Liquidity and Capital Resources

As of December 31, 2011 we had cash, cash equivalents and short-term investments of $14.2 million and
short-term and long-term debt of $6.4 million, resulting in a net cash position of $7.8 million. Substantially all
cash is held by United States institutions. We had net working capital of $20.4 million and an accumulated deficit
of $103.2 million as of December 31, 2011.

Cash flows used in operating activities. Net cash used in operating activities was $2.0 million during

2011. The primary changes in cash used in operations were as follows:

•

•

the net loss of $5.5 million, offset by $5.0 million of non-cash expenses, including $2.9 million of share-
based compensation, $1.9 million of depreciation and amortization, $0.2 million gain on disposal of
assets and $0.2 million for the write-off of deferred financing costs and discount on long-term debt; and

a net use of cash related to changes in operating assets and liabilities of $1.5 million due primarily to the
following:

•

•

•

an increase in accounts receivable of $0.2 million due primarily to an increase in sales during the
fourth quarter of 2011 as compared to the latter half of the fourth quarter of 2010;

an increase in inventory of $0.9 million due primarily to increased inventory levels in support of
new products and anticipated revenue growth;

a $1.0 million reduction in accrued liabilities primarily due to the payment of 2010 related
compensation.

Cash flows provided by investing activities. Net cash provided by investing activities was $2.7 million

during 2011. The primary sources of cash were:

•

•

•

net investment proceeds of $3.9 million;

proceeds of $0.3 million from the sale of intellectual property; and

a use of cash of $1.5 million related to the purchase of equipment, which consists primarily of loans of
our generators (i.e. our ablation and sensing unit) to our customers.

Cash flows provided by financing activities. Net cash provided by financing activities during 2011 was

$4.8 million, which was primarily due to net proceeds from the first modification to the SVB term loan
borrowing of $5.0 million and proceeds from stock option exercises of $1.6 million, partially offset by shares
repurchased for payment of taxes on stock awards of $0.8 million.

Credit facility. On May 1, 2009 we entered into a Loan and Security Agreement (the “Agreement”) with

Silicon Valley Bank (“SVB”) that provided for a term loan and a revolving credit facility under which we could

46

borrow a maximum of $10.0 million. We could borrow up to $10.0 million under the revolving loan facility with
the availability subject to a borrowing base formula. On May 1, 2009, we borrowed the maximum amount of
$6.5 million under the term loan. In connection with the term loan, SVB received a warrant to purchase 371,732
shares of our common stock at $1.224 per share, exercisable for a term of ten years (the “Warrant”). The Warrant
was immediately exercisable and was exercised via a net share settlement exercise on October 6, 2009, resulting
in the issuance of 276,143 shares of our common stock. The Agreement also included up to a $1.0 million
sublimit for stand-by letters of credit.

On November 4, 2009, effective September 30, 2009, we entered into a Consent, Waiver and First Loan

Modification Agreement with SVB, which amended, among other things, the financial covenants in the
Agreement. On March 26, 2010, we entered into a Waiver and Second Loan Modification Agreement with SVB,
which amended, among other things, the financial covenants in the Agreement and waived a compliance
violation which occurred during February 2010.

On September 13, 2010 we entered into an Amended and Restated Loan and Security Agreement with SVB

and an Export-Import Bank Loan and Security Agreement (the “Amended Agreement”). The Amended
Agreement increased our credit facility from $10.0 million to approximately $14.0 million. The Amended
Agreement also increased our borrowing capacity under the revolving loan facility by expanding total
availability, eliminating a term loan reserve requirement, adding a sublimit secured by certain of our foreign
accounts receivable and inventory up to $2.0 million and adding incremental borrowing availability secured by a
portion of our domestic inventory. Interest on the term loan accrued at a rate of 10.0% per year, and interest on
the revolving loan accrued at a fluctuating rate equal to SVB’s announced prime rate of interest, subject to a floor
of 4.0%, plus between 1.0% and 2.0%, depending on our Adjusted Quick Ratio (as defined in the Agreement).
Principal on the term loan was being paid over 36 months of equal principal payments of approximately
$181,000, plus applicable interest. The Amended Agreement was to mature on April 30, 2012 and was secured
by all of our assets, including intellectual property.

On March 15, 2011 we entered into a First Loan Modification Agreement (the “First Loan Modification
Agreement”) and an Export-Import Bank First Loan Modification Agreement (the “First Ex-Im Agreement” and,
collectively with the First Loan Modification Agreement, the “First Modification Agreements”) which set forth
certain amendments to our credit facility with SVB. The First Loan Modification Agreement provided for a new
$7.5 million term loan. The proceeds from the term loan were used to repay the existing SVB term loan of $2.5
million. The balance was invested in short-term investments. The new term loan has a five-year term, and
principal payments in the amount of $125,000, together with accrued interest, are due and payable monthly. The
modified term loan accrues interest at a fixed rate of 6.75%.

The First Modification Agreements also provided for a two-year extension of the maturity date of the
existing revolving credit facility from April 30, 2012 to April 30, 2014. The applicable borrowing rate was
reduced to 0.25% to 1.25% above the prime rate. The maximum borrowing amount under the revolving facility
remained at $10.0 million.

On February 2, 2012 the Company and SVB entered into a Second Loan Modification Agreement (the
“Second Loan Modification Agreement”) and an Export-Import Bank Second Loan Modification Agreement (the
“Second Ex-Im Agreement” and, collectively with the Second Loan Modification Agreement, the “Second
Modification Agreements”) which set forth certain amendments to the Company’s credit facility with SVB. The
Second Modification Agreements provided for a new $10.0 million term loan in addition to the $10.0 million
revolving loan. The proceeds from the term loan were used to repay the amount outstanding under the existing
SVB term loan of $6.1 million. The balance was invested in cash and cash equivalents and short-term
investments. The new term loan has a five year term, and principal payments in the amount of $166,667, together
with accrued interest, are due and payable monthly. The modified term loan accrues interest at a fixed rate of
6.75%.

47

The Second Modification Agreements also provided for a change to a Liquidity Ratio covenant to replace
the existing Adjusted Quick Ratio covenant. The applicable borrowing rate on the revolving facility is 0.25% to
1.25%, as determined by the Liquidity Ratio.

The Amended Agreement, as modified, contains covenants that include, among others, covenants that limit
our ability to dispose of assets, enter into mergers or acquisitions, incur indebtedness, incur liens, pay dividends
or make distributions on our capital stock, make investments or loans, and enter into certain affiliate transactions,
in each case subject to customary exceptions for a credit facility of this size and type. Additional covenants apply
when we have outstanding borrowings under the revolving loan facility or when we achieve specific covenant
milestones. Financial covenants under the credit facility, as amended, include a minimum EBITDA, a limitation
on capital expenditures, and a minimum adjusted quick ratio. Further, a minimum fixed charge ratio applies
when we achieve specific covenant milestones. The occurrence of an event of default could result in an increase
to the applicable interest rate by 3.0%, an acceleration of all obligations under the Amended Agreement, an
obligation to repay all obligations in full, and a right by SVB to exercise all remedies available to it under the
Amended Agreement and related agreements including the Guaranty and Security Agreement. As of, and for the
period ended, December 31, 2011 we were in compliance with all of the financial covenants of our amended and
modified credit facility. In addition, if the guarantee by the Export-Import Bank of the United States ceases to be
in full force and effect, we must repay all loans under the Export-Import agreement.

As of December 31, 2011 we had no borrowings under the revolving credit facility and borrowing

availability of approximately $8.9 million. Also, as of December 31, 2011, $6.4 million was outstanding under
the term loan, which included $1.5 million classified as current maturities of long-term debt.

The Warrant that was issued with the initial SVB Agreement had been recorded as a discount on long-term

debt at its fair value and was being amortized over the term of the loan. Accelerated amortization expense of
$78,873 was recorded in March 2011 due to the credit facility modification.

In addition to the accelerated amortization of the Warrant, we also recorded $74,228 of expense related to

deferred financing costs and other fees as a result of the credit facility modification in March 2011.

As of December 31, 2011 the effective interest rate on borrowings under the modified term loan, including

debt issuance costs, was 8.0%. On June 20, 2011, we cancelled an outstanding letter of credit for $250,000 issued
to our corporate credit card program provider which was due to expire on July 31, 2011. As of December 31,
2011 no letters of credit were outstanding.

Uses of liquidity and capital resources. Our future capital requirements depend on a number of factors,
including the rate of market acceptance of our current and future products, the resources we devote to developing
and supporting our products, future expenses to expand and support our sales and marketing efforts, costs
relating to changes in regulatory policies or laws that affect our operations and costs of filing, costs associated
with clinical trials and securing regulatory approval for new products, costs associated with required training
programs and post-approval clinical studies, costs associated with prosecuting, defending and enforcing our
intellectual property rights, and possible acquisitions and joint ventures. Global economic turmoil may adversely
impact our revenue, access to the capital markets or future demand for our products.

In July 2011 we filed a shelf registration statement with the SEC, which will allow us to sell any
combination of senior or subordinated debt securities, common stock, preferred stock, warrants, depositary
shares and units in one or more offerings should we choose to do so in the future.

We believe that our current cash, cash equivalents and short-term investments, along with the cash we
expect to generate or use for operations or access via our credit facility, as amended in February 2012, will be
sufficient to meet our anticipated cash needs for working capital and capital expenditures for at least the next
twelve months. Significant cash needs over the next twelve months include debt service of approximately

48

$2.0 million ($0.2 million per month plus interest as amended in February 2012) on our outstanding term loan,
along with payments under our settlement agreement with the DOJ and Relator of approximately $0.8 million
over the next twelve months, and payments under the distributor termination agreement and consulting
agreements of approximately $0.2 million. 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

DOJ Settlement

On February 2, 2010 we entered into a settlement agreement among the Company, the DOJ, the OIG and the

Relator in the DOJ investigation and qui tam complaint (“Settlement Agreement”). The Settlement Agreement
and dismissal of the qui tam complaint definitively resolve all claims related to the DOJ investigation and qui
tam complaint. We have not admitted nor will we admit to any wrongdoing in connection with the settlement.

The Settlement Agreement provided that we would pay a settlement amount of approximately $3.8 million

(total payments based on the settlement inclusive of interest are approximately $4.2 million) and legal fees to
counsel for the Relator of $0.2 million. Payment of the settlement amount is being made over a five-year period.
A majority of the amount payable is payable during the fourth and fifth years. Payments of the Relator’s legal
fees are being made in ratable quarterly payments over four years with the first payment made in February 2010.

As part of the resolution, we also entered into a five-year Corporate Integrity Agreement with OIG. This

agreement acknowledges the existence of our corporate compliance program and provides for certain other
compliance-related activities during the five-year term of the agreement. Those activities include specific written
standards, monitoring, training, education, independent review, disclosure and reporting requirements.

Purchase Agreement

On June 15, 2007 we entered into a purchase agreement with MicroPace Pty Ltd Inc., (“MicroPace”). The
agreement, as amended, provides for MicroPace to produce a derivative of one of their products tailored for the
cardiac surgical environment, known as the “MicroPace ORLab™” for worldwide distribution by AtriCure.
Pursuant to the terms of the amended agreement, in order for us to retain exclusive distribution rights, we are
required to purchase a minimum of 40 units during the period December 1, 2010 through December 31, 2011 to
extend exclusivity through 2012 and an additional 40 units during 2012 to extend exclusivity through
December 31, 2013. We purchased a total of 56 units between December 1, 2010 and December 31, 2011,
thereby extending exclusive distribution rights through December 31, 2012. Units purchased in excess of yearly
minimums reduce future minimum purchase requirements.

Distributor Termination

In July 2010 we terminated a distributor agreement with a European distributor. Under the terms of the
agreement, we paid the distributor €200,000 (approximately $260,000), repurchased saleable disposable product
inventory for approximately €107,000 (approximately $140,000), and paid €75,000 (approximately $98,000) for
capital equipment. Additionally, we entered into a consulting agreement with the distributor to provide ongoing
consulting services through September 30, 2012. In exchange for these services, beginning October 1, 2010, the

49

distributor will earn €50,000 (approximately $65,000) per quarter for a total of €400,000 (approximately
$520,000). Additionally, during the third quarter of 2010 the distributor earned €30,000 (approximately $40,000)
for consulting services.

The following sets forth our approximate aggregate obligations at December 31, 2011 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) . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DOJ settlement(2)
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating leases(3)
Royalty obligations(4)
. . . . . . . . . . . . . . . . . . . . . . . . . .
Obligations to fund research grants . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
Purchase obligations(5)
. . . . . . .
Distributor termination/consulting agreement

$ 7,391,520
3,087,500
1,365,545
1,177,309
454,950
330,000
195,000

$1,932,055
787,500
766,891
577,309
454,950
330,000
195,000

$3,500,184
2,300,000
598,654
400,000

$1,959,281

—
—
200,000

—
—
—

—
—
—

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

$14,601,824

$5,043,705

$6,798,838

$2,159,281

(1) Long-term debt represents principal repayment related to our term loan that matures in 2016. Interest on the

term loan accrues at a rate of 6.75% per year and is included above. Capital leases consist of principal and
interest payments related to computer equipment. Our credit facility was modified on February 2, 2012 and
provided for a new $10,000,000 term loan. The new term loan has a five year term, and principal payments
in the amount of $166,667, together with accrued interest, are due and payable monthly. The modified term
loan accrues interest at a fixed rate of 6.75%.

(2) The DOJ settlement provides that we pay a settlement amount of $3,955,405, which represents the net
present value of the settlement amount to be paid to the DOJ, the Relator, and Relator’s counsel (total
payments based on the settlement inclusive of interest are $4,350,000 and payable over five years).

(3) Represents lease commitments under various operating leases.
(4) Represents minimum payments required under the terms of a royalty agreement, not to exceed in aggregate
$2.0 million in royalties from January 1, 2010 through December 31, 2015. Through 2011, $0.4 million had
been paid. Also represented is another royalty agreement which is a total royalty of 5% of product sales and
was estimated using 2011 sales. See Note 10, “Commitments and Contingencies” to our Consolidated
Financial Statements.

(5) Represents estimated minimum number of ORLab units (24) to be purchased from MicroPace in order to

maintain exclusive distribution rights.

Off-Balance-Sheet Arrangements

As of December 31, 2011 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, revenue and expenses, and disclosures of contingent assets and

50

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—We follow FASB ASC 718 “Compensation—Stock

Compensation” (“ASC 718”) to record share-based compensation for all employee share-based payment awards,
including stock options, restricted stock, performance shares and stock purchases related to an employee stock
purchase plan, based on estimated fair values. Our employee share-based compensation expense recognized
under ASC 718 for the years ended December 31, 2011, 2010 and 2009 was $2.9 million, $2.8 million and
$3.9 million, respectively, on a before and after tax basis.

FASB ASC 718 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. FASB ASC 718 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 and the peer group’s expected stock price volatility over the term of the awards and actual and
projected employee stock option exercise behaviors. For non-employee options, the fair value at the date of grant
is subject to adjustment at each vesting date based upon the fair value of our common stock.

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” or the “Plan”) which is available to all eligible
employees as defined by 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.

We have historically issued stock options to non-employee consultants as a form of compensation for
services provided to us. We account for the options granted to non-employees prior to their vesting date in
accordance with ASC 505-50, “Equity-Based Payments to Non-Employees.” Because these options do not
contain specific performance provisions, there is no measurement date of fair value until the options vest.
Therefore, the fair value of the options granted and outstanding prior to their vesting date is remeasured each
reporting period. During the years ended December 31, 2011, 2010 and 2009, respectively, $7,698, $19,154 and
$19,675 of compensation expense was recorded as a result of the remeasurement of the fair value of these
unvested stock options.

Because the options require settlement by our delivery of registered shares and because the tax withholding

provisions in the awards allow the options to be partially net-cash settled, these options, when vested, are no
longer eligible for equity classification and are, thus, subsequently accounted for as derivative liabilities under
FASB ASC 815 until the awards are ultimately either exercised or forfeited. Accordingly, the vested

51

non-employee options are classified as liabilities and remeasured at fair value through earnings at each reporting
period. During the years ended December 31, 2011, 2010 and 2009, $22,649, ($164,959) and $(140,620),
respectively, of income (expense) was recorded as a result of the remeasurement of the fair value of these stock
options.

As of December 31, 2011 and 2010, respectively, fully vested stock options to acquire 33,603 and 41,049

shares of common stock held by non-employee consultants remained unexercised and a liability of $208,007 and
$268,478 was included in accrued liabilities in the Consolidated Balance Sheets as of December 31, 2011 and
2010, respectively.

Revenue Recognition—Revenue is generated primarily from the sale of our disposable surgical devices.

Pursuant to our standard terms of sale, revenue is recognized when title to the goods and risk of loss transfers to
customers and there are no remaining obligations that will affect 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. No installation, calibration or testing of this equipment is performed by AtriCure subsequent to
shipment to the customer in order to render it operational. Product revenue includes shipping revenue of
$0.7 million, $0.7 million and $0.7 million in 2011, 2010 and 2009, respectively. Cost of freight for shipments
made to customers is included in cost of revenue. Sales and other value-added taxes collected from customers
and remitted to governmental authorities are excluded from revenue. We sell our products primarily through a
direct sales force and through a wholly-owned subsidiary, AtriCure Europe B.V. Terms of sale are generally
consistent for both end-users and distributors except that payment terms are generally net 30 days for end-users
and net 60 days for distributors.

We account for revenue in accordance with FASB ASC 605, “Revenue Recognition” (“ASC 605”). We
determine the timing of revenue recognition based upon factors such as passage of title, installation, payment
terms and ability to return products. We recognize revenue when all of the following criteria are met: (i) there is
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.

Allowance for Uncollectible Accounts Receivable—We evaluate the collectability of accounts receivable in

order to determine the appropriate reserve for doubtful accounts. In determining the amount of the reserve, we
consider the aging of account balances, historical credit losses, customer-specific information, and other relevant
factors. An increase to the allowance for doubtful accounts results in a corresponding increase in expense.
Periodically, 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 cost method

(“FIFO”) and consist of raw materials, work in process and finished goods. A reserve for inventory is estimated
and recorded 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. 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 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 using the straight-line method for financial reporting purposes and applied 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

52

is three to seven years and leasehold improvements and equipment leased 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 our switchbox units

and cryosurgical consoles) that are loaned at no cost to direct customers that use our disposable products. These
generators are depreciated over a period of one to three years, which approximates their useful lives, and such
depreciation is included in cost of revenue. The estimated useful lives of this equipment are based on anticipated
usage by our customers and the timing and impact of our expected new technology rollouts. To the extent we
experience changes in the usage of this equipment or the introductions of new technologies, the estimated useful
lives of this equipment may change in a future period. Depreciation related to these generators was $1.3 million,
$1.4 million and $1.1 million in 2011, 2010 and 2009, 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 FASB ASC 360, “Property, Plant and Equipment” (“ASC 360”).
We recorded charges of $56,416, $28,523 and $5,517 for the impairment of property and equipment in 2011,
2010 and 2009, respectively.

Intangible Assets—Intangible assets with determinable useful lives are amortized on a straight-line basis

over the estimated periods benefited, which have ranged from four to eight years.

Income Taxes—Income taxes are computed using the asset and liability method in accordance with FASB

ASC 740, “Income Taxes” (“ASC 740”), 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 of the valuation allowance for deferred tax assets requires us to make significant estimates and

judgments about future operating results. Our 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 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.

Recent Accounting Pronouncements

In October 2009 the FASB issued new guidance in ASC 985, “Software,” which amends the accounting and

disclosure for revenue recognition. These amendments, effective for fiscal years beginning on or after June 15,
2010 (early adoption is permitted), modify the criteria for recognizing revenue in multiple element arrangements
and the scope of what constitutes a non-software deliverable. The Company’s adoption of the provisions of ASC
985 did not have a material impact on its consolidated financial position and results of operations.

In January 2010 the FASB issued new guidance in ASC 820, “Fair Value Measurements and Disclosures,”

which requires reporting entities to make new disclosures about recurring or nonrecurring fair value
measurements including (i) significant transfers into and out of Level 1 and Level 2 fair value measurements and
(ii) information on purchases, sales, issuances and settlements on a gross basis in the reconciliation of Level 3
fair value measurements. This new guidance is effective for interim and annual reporting periods beginning after

53

December 15, 2009, except for Level 3 reconciliation disclosures which are effective for interim and annual
periods beginning after December 15, 2010. The Company has incorporated the additional disclosures required
for fair value measurements.

In May 2011 the FASB issued Accounting Standards Update (“ASU”) 2011-04, “Fair Value Measurement.”

The ASU is the result of joint efforts by the FASB and IASB to develop a single, converged fair value
framework, that is, converged guidance on how (not when) to measure fair value and on what disclosures to
provide about fair value measurements. While the ASU is largely consistent with existing fair value measurement
principles in U.S. GAAP, it expands ASC 820’s existing disclosure requirements for fair value measurements
and makes other amendments. Some of the amendments could change how the fair value measurement guidance
in ASC 820 is applied. The ASU is effective for interim and annual reporting periods beginning after
December 15, 2011. The Company plans to adopt the additional disclosure requirements during the first quarter
of 2012.

In June 2011 the FASB issued new guidance in ASU 2011-05, “Presentation of Comprehensive Income,”
which revises the manner in which entities present comprehensive income in their financial statements. This new
guidance requires entities to report components of comprehensive income in either (1) a continuous statement of
comprehensive income or (2) two separate but consecutive statements. It is effective for interim and annual
reporting periods beginning after December 15, 2011. The Company plans to adopt the new presentation
guidance during the first quarter of 2012.

54

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The Company has 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 FASB ASC 718 and are subject to
FASB ASC 815, which requires fully 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 reporting period until the awards are settled or expire. Income (expense) recorded based on
the remeasurement of these options was approximately $23,000, ($0.2) million and ($0.1) million for 2011, 2010
and 2009, respectively. As of December 31, 2011, stock options to acquire 33,603 shares of common stock held
by non-employee consultants remained unexercised, and a liability of $0.2 million was included in accrued
liabilities in the accompanying Consolidated Balance Sheet. The Company is exposed to the volatility of the
market price of its stock. If the market price of AtriCure stock was $1 higher as of December 31, 2011, the
Company would have recorded approximately $33,000 in additional expense related to these awards.

The Company is 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 the term loan with Silicon Valley Bank bear interest at a rate of 6.75% per year. Interest on the
revolving loan will accrue at a fluctuating rate equal to the Bank’s announced prime rate of interest, subject to a
floor of 4.0%, plus between 0.25% to 1.25%, depending on the Company’s Liquidity Ratio (as defined in the
Amended Agreement). As of February 2, 2012, our effective borrowing rate was 8.0% and the carrying value and
fair value of the outstanding balance under the term loan was $10.0 million. Based upon this debt level, a 10%
increase in the interest rate would not have resulted in a material impact to our financial results.

For the years ended December 31, 2011 and 2010, products sold by AtriCure Europe, B.V. accounted for

13.5% and 11.1%, respectively, of the Company’s total revenue. Since such revenue was primarily denominated
in Euros, the Company is exposed to exchange rate fluctuations between the Euro and the U.S. Dollar. To date,
the effect of the foreign exchange rate fluctuations on AtriCure’s financial results has not been significant. For
the years ended December 31, 2011 and 2010, foreign currency transaction gains (losses) of $30,081 and
($171,227), respectively, were recorded in connection with partial settlements of the intercompany receivable
balance with the subsidiary. For revenue 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 products are priced in Euros, the Company will receive less in
U.S. Dollars than was received before the rate increase went into effect. If products are priced 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 the
Company’s 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 revenue and expenses.

The Company currently invests its cash primarily in money market accounts, U.S. government agencies and

securities, corporate bonds and commercial paper. Although the Company believes its cash to be invested in a
conservative manner, with cash preservation being the primary investment objective, the value of the
securities held will fluctuate with changes in the financial markets including, among other things, changes in
interest rates, credit quality and general volatility. This risk is managed by investing in high quality investment
grade securities with short-term maturities.

Financial instruments that potentially subject the Company to credit risk consist of cash and cash equivalent
balances. Certain of AtriCure’s cash and cash equivalents balances exceed FDIC insured limits or are invested in
money market accounts with investment banks that are not FDIC insured. The Company places its cash and cash
equivalents in what it believes to be credit-worthy financial institutions. As of December 31, 2011 $9,912,360 of
the cash and cash equivalents balance was in excess of the FDIC limits.

55

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 and Comprehensive Income (Loss) . . . . . . . . . . . . .
Consolidated Statements of Cash Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Notes to Consolidated Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

57
58
59
60
61
62

Financial Statement Schedule:

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

85

56

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, 2011 and 2010, and the related consolidated statements of operations,
stockholders’ equity and comprehensive income (loss), and cash flows for each of the three years in the period
ended December 31, 2011. 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 the Company at December 31, 2011 and 2010, and the results of their operations and their cash flows
for each of the three years in the period ended December 31, 2011, 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, 2011, 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, 2012 expressed an unqualified
opinion on the Company’s internal control over financial reporting.

/s/ Deloitte & Touche LLP
Cincinnati, Ohio
March 12, 2012

57

ATRICURE, INC. AND SUBSIDIARY

CONSOLIDATED BALANCE SHEETS
DECEMBER 31, 2011 and 2010

2011

2010

Assets
Current assets:

Cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Short-term investments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accounts receivable, less allowance for doubtful accounts of $36,694 and

$8,764, respectively . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Property and equipment, net
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

9,758,903
4,423,763

$

4,230,709
8,340,028

9,513,894
6,563,138
933,028

31,192,726
2,350,760
44,791
270,613

9,480,064
5,680,033
2,917,571

30,648,405
2,723,227
89,375
254,707

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

$ 33,858,890

$ 33,715,714

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

5,270,084
3,995,880
1,542,848

10,808,812
4,925,775

$

4,511,516
6,330,405
2,193,356

13,035,277
661,624

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

2,509,599

3,282,883

Total Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18,244,186

16,979,784

Commitments and contingencies (Note 10)

Stockholders’ Equity:

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

16,369,221 and 15,663,585 issued and outstanding, respectively . . . . . . .
Additional paid-in capital
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accumulated other comprehensive (loss) income . . . . . . . . . . . . . . . . . . . . .
Accumulated deficit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16,369
118,852,948
(37,517)
(103,217,096)

15,664
114,402,234
79,625
(97,761,593)

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

15,614,704

16,735,930

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

$ 33,858,890

$ 33,715,714

See accompanying notes to consolidated financial statements.

58

ATRICURE, INC. AND SUBSIDIARY

CONSOLIDATED STATEMENTS OF OPERATIONS
YEARS ENDED DECEMBER 31, 2011, 2010 and 2009

2011

2010

2009

Revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$64,402,409
17,405,985

$59,006,188
13,618,454

$ 54,533,558
12,750,745

Gross profit

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

46,996,424

45,387,734

41,782,813

Operating expenses:

Research and development expenses . . . . . . . . . . . . . . . . . . . . .
Selling, general and administrative expenses . . . . . . . . . . . . . .
Goodwill impairment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Settlement reserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11,856,821
39,870,139
—
—

11,530,820
37,048,715

—
—

11,414,889
35,112,006
6,812,389
3,955,405

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

51,726,960

48,579,535

57,294,689

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

(4,730,536)

(3,191,801)

(15,511,876)

Other income (expense):

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

(814,427)
15,930
104,418

(861,573)
22,219
258,582

(812,326)
51,089
(280,514)

Loss before income tax expense (benefit) . . . . . . . . . . . . . . . . . . . . .
Income tax expense (benefit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(5,424,615)
30,888

(3,772,573)
19,050

(16,553,627)
(58,639)

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

$ (5,455,503) $ (3,791,623) $(16,494,988)

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

$

(0.35) $

(0.25) $

(1.13)

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

15,671,993

15,095,250

14,563,710

See accompanying notes to consolidated financial statements.

59

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY AND COMPREHENSIVE INCOME (LOSS)
YEARS ENDED DECEMBER 31, 2011, 2010, and 2009

ATRICURE, INC. AND SUBSIDIARY

Common Stock

Shares

Amount

Additional
Paid-in
Capital

Accumulated
Deficit

Accumulated
Other
Comprehensive
Income (Loss)

Total
Stockholders’
Equity

Comprehensive
Income (Loss)

Balance—December 31, 2008 . . . . . . 14,274,884 $14,275 $106,636,653 $ (77,474,982)

$ (56,789)

$ 29,119,157

Issuance of common stock under
equity incentive plans . . . . . .
Issuance of common stock under

employee stock purchase
plan . . . . . . . . . . . . . . . . . . . . .

Non-employee stock option fair
market value adjustment

. . . .

Share-based employee

compensation expense . . . . . .
Issuance of common stock under
warrants . . . . . . . . . . . . . . . . .

Unrealized gain on

investments . . . . . . . . . . . . . .
Foreign currency translation . . .
Net loss . . . . . . . . . . . . . . . . . . . .

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

684,790

685

(357,801)

117,471

117

280,918

—

—

—

—

19,675

3,865,921

276,143

276

454,721

—
—
—

—
—
—

—
—
—

—

—

—

—

—

—
—

(16,494,988)

—

—

—

—

—

(357,116)

281,035

19,675

3,865,921

454,997

2,685
198,394
—

2,685
198,394
(16,494,988)

2,685
198,394
(16,494,988)

$(16,293,909)

Balance—December 31, 2009 . . . . . . 15,353,288

15,353

110,900,087

(93,969,970)

144,290

17,089,760

Issuance of common stock under
equity incentive plans . . . . . .
Issuance of common stock under

employee stock purchase
plan . . . . . . . . . . . . . . . . . . . . .

Non-employee stock option fair
market value adjustment

. . . .

Share-based employee

compensation expense . . . . . .

Unrealized loss on

investments . . . . . . . . . . . . . .
Foreign currency translation . . .
Net loss . . . . . . . . . . . . . . . . . . . .

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

213,709

214

231,874

96,588

97

498,423

—

—

—
—
—

—

—

—
—
—

19,154

2,752,696

—
—
—

—

—

—

—

—
—

(3,791,623)

—

—

—

—

(3,006)
(61,659)
—

232,088

498,520

19,154

2,752,696

(3,006)
(61,659)
(3,791,623)

Balance—December 31, 2010 . . . . . . 15,663,585

15,664

114,402,234

(97,761,593)

79,625

16,735,930

Issuance of common stock under
equity incentive plans . . . . . .
Issuance of common stock under

employee stock purchase
plan . . . . . . . . . . . . . . . . . . . . .

Non-employee stock option fair
market value adjustment

. . . .

Share-based employee

compensation expense . . . . . .

Reclassification of

non-employee option
liability . . . . . . . . . . . . . . . . . .

Unrealized gain on

investments . . . . . . . . . . . . . .
Foreign currency translation . . .
Net loss . . . . . . . . . . . . . . . . . . . .

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

631,685

631

860,290

73,951

74

668,974

—

—

—

—
—
—

—

—

—

—
—
—

7,698

2,931,290

(17,538)

—
—
—

—

—

—

—

—

—
—

(5,455,503)

—

—

—

—

—

2,075
(119,217)

—

860,921

669,048

7,698

2,931,290

(17,538)

2,075
(119,217)
(5,455,503)

Balance—December 31, 2011 . . . . . . 16,369,221 $16,369 $118,852,948 $(103,217,096))

$ (37,517)

$ 15,614,704

(3,006)
(61,659)
(3,791,623)

$ (3,856,288)

2,075
(119,217)
(5,455,503)

$ (5,572,645)

See accompanying notes to consolidated financial statements.

60

ATRICURE, INC. AND SUBSIDIARY

CONSOLIDATED STATEMENTS OF CASH FLOWS
YEARS ENDED DECEMBER 31, 2011, 2010 and 2009

Cash flows from operating activities:

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustments to reconcile net loss to net cash (used in) provided by operating

$ (5,455,503) $ (3,791,623) $(16,494,988)

2011

2010

2009

activities:

Share-based compensation expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of deferred financing costs . . . . . . . . . . . . . . . . . . . . . . . . . . .
Write-off of deferred financing costs and discount on long-term debt . . . . .
Amortization of discount on long-term debt . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization/accretion on investments . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss (gain) on disposal of equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gain on sale of intellectual property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change in allowance for doubtful accounts . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill impairment
Settlement reserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Changes in assets and liabilities:

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

2,938,988
1,877,564
96,916
153,101
21,707
44,584
61,256
56,415
(300,000)
28,183
—
—

(198,947)
(923,512)
(16,986)
787,499
(975,896)
(181,795)

2,771,850
2,165,006
111,065
—
185,314
198,278
—
(36,604)
—
(15,636)
—
—

(2,299,937)
(850,147)
524,339
893,281
(237,071)
348,451

3,885,596
2,132,300
87,473
102,485
169,106
281,500
—
5,517
—
(9,581)
6,812,389
3,955,405

(685,986)
1,504,706
169,163
(1,550,090)
140,624
(85,671)

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

(1,986,426)

(33,434)

419,948

Cash flows from investing activities:

Purchases of equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds from sale of equipment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchases of available-for-sale securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maturities of available-for-sale securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds from sale of intellectual property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change in restricted cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . .

(1,522,311)
89,476
(12,649,107)
16,506,154
300,000
—

(1,813,812)
5,238
(11,124,852)
9,598,491
—
—

(1,360,459)
2,000
(8,015,866)
1,201,877
—
6,000,000

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

2,724,212

(3,334,935)

(2,172,448)

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds from stock option exercises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shares repurchased for payment of taxes on stock awards . . . . . . . . . . . . . . . . . .

(4,046,497)
7,500,000
(80,930)

(2,227,431)

—
(67,619)

(7,493,269)
6,500,000
(235,110)

669,048
1,588,065
(782,506)

498,520
353,356
—

281,035
33,335
—

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

4,847,180

(1,443,174)

(914,009)

Effect of exchange rate changes on cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net increase (decrease) in cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . .
Cash and cash equivalents—beginning of period . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(56,772)
5,528,194
4,230,709

136,827
(4,674,716)
8,905,425

123,483
(2,543,026)
11,448,451

Cash and cash equivalents—end of period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 9,758,903

$ 4,230,709

$ 8,905,425

Supplemental cash flow information:

Cash paid for interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cash paid for income taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Non-cash investing and financing activities:

Accrued purchases of property and equipment . . . . . . . . . . . . . . . . . . . . . . .
Receivable related to sale of property and equipment
. . . . . . . . . . . . . . . . .
Assets acquired through capital lease . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warrant issued in conjunction with credit facility . . . . . . . . . . . . . . . . . . . .

$

405,272
30,480

$

417,516
29,639

$

460,927
17,300

43,765
—
59,560
—

61,976
89,469
—
—

15,746
—
105,651
455,000

See accompanying notes to consolidated financial statements.

61

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” or “AtriCure”) was incorporated in the State of
Delaware on October 31, 2000. The Company develops, manufactures and sells devices designed primarily for
the surgical ablation of cardiac tissue and devices for the exclusion of the left atrial appendage. The Company
sells its products to hospitals and medical centers globally. International sales were $15,470,989, $11,488,302
and $10,414,357 in 2011, 2010 and 2009, 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
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 places its investments primarily in U.S. Government agencies and
securities, corporate bonds and commercial paper with maturities less than one year. 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.

Revenue Recognition—The Company accounts for revenue in accordance with Financial Accounting
Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 605, “Revenue Recognition” (“ASC
605”). The Company determines 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) there is 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.

Revenue is generated from the sale of the Company’s surgical devices. Our surgical devices consist

primarily of individual disposable handpieces and equipment generators. Our customers need the combination of
the generator and the handpieces to have a functional system. The Company believes that the generator and
handpiece are considered a single unit of accounting under ASC 605 because neither the generator nor handpiece
have value to the customer on a standalone basis. Therefore, because the customer needs both the generator and
handpiece to have a functional system, revenue is recognized upon the later of delivery of the generator or the
handpiece.

Pursuant to the Company’s standard terms of sale, revenue is 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. 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 revenue includes shipping and handling revenue of $664,277, $656,571 and $669,328 in 2011, 2010
and 2009, respectively. Cost of freight for shipments made to customers is included in cost of revenue. Sales and
other value-added taxes collected from customers and remitted to governmental authorities are excluded from
revenue. 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 except that payment terms are generally
net 30 days for end-users and net 60 days for distributors.

62

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Sales Returns and Allowances—The Company maintains a provision for sales returns and allowances to

account for potential returns of defective or damaged products, products shipped in error and price adjustments.
The Company estimates such provision quarterly based primarily on a specific identification basis, in addition to
estimating a general reserve. Increases to the provision result in a reduction of revenue.

Allowance for Uncollectible Accounts Receivable—The Company evaluates the collectability of accounts
receivable in order to determine 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. An increase to the allowance for doubtful accounts results in a corresponding increase
in 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 cost method

(“FIFO”) and consist of raw materials, work in process and finished goods. A reserve for inventory is estimated
and recorded 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 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 using the straight-line method of depreciation for financial reporting purposes and
applied 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 equipment leased 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
switchbox units and cryosurgical consoles) that are loaned at no cost to direct customers that use the Company’s
disposable products. These generators are depreciated over a period of one to three years, which approximates
their useful lives, and such depreciation is included in cost of revenue. The estimated useful lives of this
equipment are based on anticipated usage by our customers and the timing and impact of expected new
technology rollouts by the Company. To the extent the Company experiences changes in the usage of this
equipment or introductions of new technologies, the estimated useful lives of this equipment may change in a
future period. Depreciation related to these generators was $1,293,922, $1,369,200 and $1,125,786 in 2011, 2010
and 2009, respectively. As of December 31, 2011 and 2010, the net carrying amount of loaned equipment
included in net property and equipment in the Consolidated Balance Sheets was $1,204,422 and $1,630,163,
respectively.

Impairment of Long-Lived Assets—The Company reviews property and equipment for impairment using

its best estimates based on reasonable and supportable assumptions and projections. In 2011, the Company
recorded charges for the impairment of property and equipment within cost of revenue and operating expense of
$11,737 and $44,679, respectively. In 2010, the Company recorded a gain of $65,127 on the sale of property and

63

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

equipment and a charge within operating expense of $28,523 for the impairment of property and equipment. In
2009, the Company recorded a charge within operating expense of $5,517 for the impairment of property and
equipment.

Intangible Assets—Intangible assets with determinable useful lives are amortized on a straight-line basis

over the estimated periods benefited, which have ranged from four to eight years.

Grant Income—The Company periodically is awarded grants to support research and development
activities. The Company recognizes income under the grants as funds are earned (not as they are awarded by
awarding agencies). The Company recorded grant income, as a component of other income, of $51,689,
$594,762 and $0 during 2011, 2010 and 2009, respectively.

Income Taxes—Income taxes are computed using the asset and liability method in accordance with FASB

ASC 740 “Income Taxes” (“ASC 740”), 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 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 2,948,684, 3,408,304 and 3,164,636 stock options,
restricted stock and performance based shares as of December 31, 2011, 2010, and 2009, respectively, because
they 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.

Comprehensive Loss and Accumulated Other Comprehensive Income (Loss)—In addition to net loss,
comprehensive loss includes foreign currency exchange rate adjustments and unrealized gains and losses on
investments. The comprehensive loss for the years ended December 31, 2011, 2010 and 2009 was $5,572,645,
$3,856,288 and $16,293,909, respectively.

64

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Accumulated other comprehensive income (loss) consisted of the following:

Unrealized
Gains (Losses)
on Short-Term
and Long-Term
Investments

Foreign
Currency
Translation
Adjustment

Other
Comprehensive
Income (Loss)

Balance as of December 31, 2008 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current-period change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ —

2,685

$ (56,789)
198,394

$ (56,789)
201,079

Balance as of December 31, 2009 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current-period change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Balance as of December 31, 2010 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current-period change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2,685
(3,006)

(321)
2,075

141,605
(61,659)

79,946
(119,217)

144,290
(64,665)

79,625
(117,142)

Balance as of December 31, 2011 . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 1,754

$ (39,271)

$ (37,517)

Foreign Currency Transaction Losses—The Company recorded foreign currency transaction gains (losses)

of $30,081, ($171,227) and ($140,593) for the years ended December 31, 2011, 2010 and 2009, respectively, in
connection with partial settlements of its intercompany balance with its subsidiary.

Research and Development Costs—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.
Research and development costs totaled $11,856,821, $11,530,820 and $$11,414,889 for the years ended
December 31, 2011, 2010 and 2009, respectively.

Share-Based Employee Compensation—The Company follows FASB ASC 718 “Compensation-Stock
Compensation” (“ASC 718”), to record share-based compensation for all employee share-based payment awards,
including stock options, restricted stock, performance shares and stock purchases related to an employee stock
purchase plan, based on estimated fair values. The Company’s share-based compensation expense recognized
under ASC 718 for the years ended December 31, 2011, 2010 and 2009 was $2,931,290, $2,752,696 and
$3,865,922, respectively, on a before and after tax basis.

FASB ASC 718 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. FASB ASC 718 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. For non-employee options, the fair value at the date of grant
is subject to adjustment at each vesting date based upon the fair value of the Company’s common stock.

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.

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The Company also has an employee stock purchase plan (“ESPP” or the “Plan”) which is available to all

eligible employees as defined by 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.

The Company has historically issued stock options to non-employee consultants as a form of compensation
for services provided to the Company. The Company accounts for the options granted to non-employees prior to
their vesting date in accordance with ASC 505-50, “Equity-Based Payments to Non-Employees.” Because these
options do not contain specific performance provisions, there is no measurement date of fair value until the
options vest. Therefore, the fair value of the options granted and outstanding prior to their vesting date is
remeasured each reporting period. During the years ended December 31, 2011, 2010 and 2009, $7,698, $19,154
and $19,675, respectively, of expense was recorded as a result of the remeasurement of these unvested stock
options.

Because the non-employee options require settlement by the Company’s delivery of registered shares and

because the tax withholding provisions in the awards allow the options to be partially net-cash settled, these
options, when vested, are no longer eligible for equity classification and are, thus, subsequently accounted for as
derivative liabilities under FASB ASC 815 until the awards are ultimately either exercised or forfeited.
Accordingly, the vested non-employee options are classified as liabilities and remeasured at fair value through
earnings at each reporting period. During the years ended December 31, 2011, 2010 and 2009, $22,649,
($164,959) and $(140,620), respectively, of income (expense) was recorded as a result of the remeasurement of
the fair value of these fully vested stock options.

Fully vested options to acquire 33,603 and 41,049 shares of common stock held by non-employee

consultants remained unexercised as of December 31, 2011 and 2010, respectively. A liability of $208,007 and
$268,478 was included in accrued liabilities in the Consolidated Balance Sheets as of December 31, 2011 and
2010, respectively.

Use of Estimates—The preparation of the financial statements in conformity with GAAP 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
revenue and expense during the reporting period. Actual results could differ from those estimates.

Fair Value Disclosures—The book value of the Company’s financial instruments, including cash and cash

equivalents, accounts receivable, short-term investments, short and long-term other assets, accounts payable,
accrued expenses, other liabilities and fixed interest rate debt, approximate their fair values.

2. RECENT ACCOUNTING PRONOUNCEMENTS

In October 2009 the FASB issued new guidance in Accounting Standards Codification (“ASC”) 985,
“Software,” which amends the accounting and disclosure for revenue recognition. These amendments, effective
for fiscal years beginning on or after June 15, 2010 (early adoption is permitted), modify the criteria for
recognizing revenue in multiple element arrangements and the scope of what constitutes a non-software
deliverable. The Company’s adoption of the provisions of ASC 985 did not have a material impact on its
consolidated financial position and results of operations.

In January 2010 the FASB issued new guidance in ASC 820, “Fair Value Measurements and Disclosures,”

which requires reporting entities to make new disclosures about recurring or nonrecurring fair value
measurements including (i) significant transfers into and out of Level 1 and Level 2 fair value measurements and

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(ii) information on purchases, sales, issuances and settlements on a gross basis in the reconciliation of Level 3
fair value measurements. This new guidance is effective for interim and annual reporting periods beginning after
December 15, 2009, except for Level 3 reconciliation disclosures which are effective for interim and annual
periods beginning after December 15, 2010. The Company has incorporated the additional disclosures required
for fair value measurements.

In May 2011 the FASB issued Accounting Standards Update (“ASU”) 2011-04, “Fair Value Measurement.”

The ASU is the result of joint efforts by the FASB and IASB to develop a single, converged fair value
framework, that is, converged guidance on how (not when) to measure fair value and on what disclosures to
provide about fair value measurements. While the ASU is largely consistent with existing fair value measurement
principles in U.S. GAAP, it expands ASC 820’s existing disclosure requirements for fair value measurements
and makes other amendments. Some of the amendments could change how the fair value measurement guidance
in ASC 820 is applied. The ASU is effective for interim and annual reporting periods beginning after
December 15, 2011. The Company plans to adopt the additional disclosure requirements during the first quarter
of 2012.

In June 2011 the FASB issued new guidance in ASU 2011-05, “Presentation of Comprehensive Income,”
which revises the manner in which entities present comprehensive income in their financial statements. This new
guidance requires entities to report components of comprehensive income in either (1) a continuous statement of
comprehensive income or (2) two separate but consecutive statements. It is effective for interim and annual
reporting periods beginning after December 15, 2011. The Company plans to adopt the new presentation
guidance during the first quarter of 2012.

3. FAIR VALUE

FASB ASC 820, “Fair Value Measurements and Disclosures,” (“ASC 820”) defines fair value 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 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 that the Company has the
ability to access at the measurement date. An active market for the asset or liability is a market in which
transactions for the asset or liability occur with sufficient frequency and volume to provide pricing
information on an ongoing basis. The valuation under this approach does not entail a significant degree
of judgment.

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. The valuation technique for the Company’s Level 2 assets is based on quoted market prices
for similar assets from observable pricing sources at the reporting date.

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. Unobservable inputs shall be used to measure fair value to the
extent that observable inputs are not available, thereby allowing for situations in which there is little, if
any, market activity for the asset or liability at the measurement date. The fair value of the Company’s
Level 3 derivatives are estimated on the grant date using the Black-Scholes model and they are revalued
at the end of each reporting period using the Black-Scholes model.

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

In accordance with ASC 820, 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, 2011:

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 . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
Commercial paper
U.S. government agencies and securities . . .
Corporate bonds . . . . . . . . . . . . . . . . . . . . . .

$

—
—

2,507,283

—

Total assets . . . . . . . . . . . . . . . . . . . . . . . . . .

$2,507,283

$7,417,124
399,842
—
1,516,638

$9,333,604

$ —
—
—
—

$ —

Total

$ 7,417,124
399,842
2,507,283
1,516,638

$11,840,887

Liabilities:
Derivative instruments . . . . . . . . . . . . . . . . .

Total liabilities . . . . . . . . . . . . . . . . . . . . . . .

$

$

—

—

$

$

—

—

$208,007

$208,007

$

$

208,007

208,007

In accordance with ASC 820, 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, 2010:

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 . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
Commercial paper
U.S. government agencies and securities . . .
Corporate bonds . . . . . . . . . . . . . . . . . . . . . .

$

—
—

5,836,594
704,207

Total assets . . . . . . . . . . . . . . . . . . . . . . . . . .

$6,540,801

$1,222,618
2,399,038
—
—

$3,621,656

$ —
—
—
—

$ —

Total

$ 1,222,618
2,399,038
5,836,594
704,207

$10,162,457

Liabilities:
Derivative instruments . . . . . . . . . . . . . . . . .

Total liabilities . . . . . . . . . . . . . . . . . . . . . . .

$

$

—

—

$

$

—

—

$268,478

$268,478

$

$

268,478

268,478

The fair value of the Level 3 liabilities is estimated using the Black-Scholes model including the following

assumptions:

As of December 31, 2011

As of December 31, 2010

Risk-free interest rate . . . . . . . . . . . . . . . . . .
Expected life of option (years) . . . . . . . . . . .
Expected volatility of stock . . . . . . . . . . . . .
Dividend yield . . . . . . . . . . . . . . . . . . . . . . .

0.12% - 0.86%
0.97 - 5.11
71.00%
0.00%

0.12% - 1.86%
0.16 - 4.71
65.00%
0.00%

The Company has historically issued stock options to non-employee consultants as a form of compensation

for services provided to the Company. When these non-employee options fully vest, the awards no longer fall
within the scope of ASC 505-50. Because the options require settlement by the Company’s delivery of registered
shares and because the tax withholding provisions in the awards allow the options to be partially net-cash settled,
these vested options are no longer eligible for equity classification and are accounted for as derivative liabilities

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

under FASB ASC 815 (“Derivatives and Hedging”) until the awards are ultimately either exercised or forfeited.
Accordingly, the vested non-employee options are classified as liabilities and remeasured at fair value through
earnings at each reporting period. 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, during 2009, the Company’s estimate of volatility was weighted 50% and 50% between the
Company’s implied volatility and the implied volatility of a group of comparable companies, respectively.
During 2010, the Company’s estimate of volatility was weighted 75% and 25% between the Company’s implied
volatility and the implied volatility of a group of comparable companies, respectively. Beginning January 1,
2011, the Company’s estimate of volatility was based solely on the Company’s trading history.

The following table represents the company’s Level 3 fair value measurements using significant other

unobservable inputs for derivative instruments as of December 31:

2011

2010

2009

Beginning Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total gains/losses (realized/unrealized) included in earnings . . . . . . . . .
Purchases (exercises) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reclassification from equity to liability when fully vested . . . . . . . . . . .
Expiration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$268,478
(22,649)
(55,361)
17,538
—

$ 180,288
164,959
(76,769)
—
—

$ 40,368
140,620
—
—
(700)

Ending Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$208,007

$ 268,478

$ 180,288

Losses included in earnings (or changes in net assets attributable to the

change in unrealized losses relating to assets held at reporting date) . . . . .

$ 22,649

$(164,959) $(140,620)

4. INVESTMENTS

As of December 31, 2011, the Company had no long-term investments. Short-term investments as of

December 31, 2011 consisted of the following:

U.S. Government agencies and securities . . . . . . . . . . . . . . .
Commercial paper
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Corporate bonds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cost Basis

$2,506,486
399,732
1,515,791

Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$4,422,009

Unrealized
Gains

$ 797
110
847

$1,754

Fair Value

$2,507,283
399,842
1,516,638

$4,423,763

As of December 31, 2010, the Company had no long-term investments. Short-term investments as of

December 31, 2010 consisted of the following:

U.S. Government agencies and securities . . . . . . . . . . . .
Commercial paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Corporate bonds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cost Basis

$5,836,623
1,799,214
704,503

Total

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

$8,340,340

Unrealized
Gains (Losses)

$ (29)
13
(296)

$(312)

Fair Value

$5,836,594
1,799,227
704,207

$8,340,028

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The Company has not experienced any significant realized gains or losses on its investments in the periods

presented in the Consolidated Statements of Operations.

5. INTANGIBLE ASSETS AND GOODWILL

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

Trade
Name

Total

Net carrying amount as of December 31, 2008 . . . . . . . . . .
Amortization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 344,778
(214,000)

$ 82,292
(12,500)

$142,083
(55,000)

$ 569,153
(281,500)

Net carrying amount as of December 31, 2009 . . . . . . . . . .
Amortization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

130,778
(130,778)

Net carrying amount as of December 31, 2010 . . . . . . . . . .
Amortization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Net carrying amount as of December 31, 2011 . . . . . . . . . .

$

—
—

—

69,792
(12,500)

57,292
(12,501)

87,083
(55,000)

32,083
(32,083)

287,653
(198,278)

89,375
(44,584)

$ 44,791

$ — $ 44,791

Amortizable intangible assets are being amortized over eight years for a non-compete arrangement. Trade
name usage and proprietary manufacturing technology intangible assets were amortized over four and five year
periods, respectively. For the years ended December 31, 2011, 2010 and 2009, amortization expense related to
intangible assets with definite lives was $44,584, $198,278 and $281,500, respectively.

Future amortization expense related to intangible assets with definite lives is projected as follows:

Year

2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2013 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2014 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2015 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Amortization

12,500
12,500
12,500
7,291

Total

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

$44,791

In December 2011 the Company entered into a patent purchase agreement with Nu Energy Solutions LLC in

which it received proceeds of $300,000 in connection with the sale of certain intellectual property. Pursuant to
the agreement, the Company agreed to sell its Bipolar Tissue Grasping Apparatus and Tissue Welding Method
patent. The Company recorded the gain on sale of $300,000 in research and development expenses in the
Consolidated Statements of Operations.

As a result of a reduction in the Company’s market capitalization during the first quarter of 2009, the
Company believed an indication of impairment existed and performed a Step 1 analysis of its goodwill in
accordance with FASB ASC 350 as of March 31, 2009. The Step 1 process concluded that the carrying value of
the Company’s single reporting unit exceeded its estimated fair value.

To estimate the fair value of the reporting unit for Step 1, the Company utilized the market valuation

approach. Under the market valuation approach the estimated fair value of the reporting unit is based on the
Company’s market capitalization using the closing market price of the Company’s stock and number of shares

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

outstanding as of March 31, 2009. The Company also considered a control premium that represents the estimated
amount an investor would pay for a controlling interest in the Company. An income approach was also used to
corroborate the results of the Step 1 test. The discounted cash flow method was used to measure the fair value of
the Company’s equity under the income approach. Determining the fair value using a discounted cash flow
method includes assumptions about future market conditions and operating results. The judgments were based
upon historical experience, current market trends and projected estimated future revenue and profit margins. The
Company believed that these estimates and assumptions were reasonable and that different estimates and
assumptions could have resulted in a different outcome. Determining the control premium to apply to the
reporting unit is a subjective process that involves the use of estimates and judgments. The income approach
supported the interim Step 1 test result using the market valuation approach in determining that the carrying
value of the reporting unit exceeded the fair value.

The Company performed Step 2 of the goodwill impairment test during the three months ended June 30,

2009. Based on the results of this test, the Company concluded its goodwill was fully impaired and that the
impairment of $6,812,389 (which represented the cumulative impairment since inception) on a before and after
tax basis was appropriately recorded as of March 31, 2009. This impairment was recorded as an increase in
operating expenses, loss from operations, and net loss in the Consolidated Statement of Operations during the
three months ended March 31, 2009.

The following table provides a summary of the Company’s changes in the net carrying amount of goodwill:

Net carrying amount as of December 31, 2008 . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill impairment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 6,812,389
(6,812,389)

Net carrying amount as of December 31, 2009, 2010 and 2011 . . . . . . . . . . . .

$

—

6. INVENTORIES

Inventories consisted of the following at December 31:

Raw materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Work in process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finished goods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$3,233,118
509,198
2,820,822

$2,574,799
698,462
2,406,772

Inventories, net

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

$6,563,138

$5,680,033

2011

2010

7. PROPERTY AND EQUIPMENT

Property and equipment consisted of the following at December 31:

2011

2010

Machinery, equipment and vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Computer and other office equipment
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Furniture and fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leasehold improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment under capital leases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Construction in progress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 6,423,779
1,235,903
347,450
149,672
267,408
206,971

$ 7,032,214
1,519,574
303,669
69,094
207,847
169,014

Total

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Less accumulated depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8,631,183
(6,280,423)

9,301,412
(6,578,185)

Property and equipment, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 2,350,760

$ 2,723,227

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Property and equipment depreciation expense was $1,877,564, $2,165,006 and $2,132,300 for the years

ended December 31, 2011, 2010 and 2009, respectively.

8. ACCRUED LIABILITIES

Accrued liabilities consisted of the following at December 31:

2011

2010

Accrued commissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued settlement reserve (current portion) . . . . . . . . . . . . . . . . . . . . . . .
Other accrued liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued taxes and value-added taxes payable . . . . . . . . . . . . . . . . . . . . . .
Accrued vacation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued non-employee stock options . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued payroll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued bonus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued class action settlement reserve . . . . . . . . . . . . . . . . . . . . . . . . . . .

$1,297,361
703,473
656,147
449,243
353,232
208,007
166,694
161,723
—

$1,178,854
486,975
758,127
348,845
257,235
268,478
137,399
894,492
2,000,000

Total

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

$3,995,880

$6,330,405

9. INDEBTEDNESS

Long-term debt and capital leases consisted of the following at December 31:

Credit facility (net of discount on debt in 2010) . . . . . . . . . . . . . . . . . . . . .
Capital leases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$6,375,000
93,623

$2,788,309
66,671

Total debt and capital leases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Less: Current maturities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6,468,623
1,542,848

2,854,980
2,193,356

Total long-term debt and capital leases . . . . . . . . . . . . . . . . . . . . . . . .

$4,925,775

$ 661,624

2011

2010

On May 1, 2009 the Company and SVB entered into a Loan and Security Agreement (the “Agreement”) that

provided for a term loan and a revolving credit facility under which the Company could borrow a maximum of
$10,000,000. The Company could borrow up to $10,000,000 under the revolving loan facility with the
availability subject to a borrowing base formula. On May 1, 2009 the Company borrowed the maximum amount
of $6,500,000 under the term loan. In connection with the term loan, SVB received a warrant to purchase
371,732 shares of the Company’s common stock at $1.224 per share, exercisable for a term of ten years (the
“Warrant”). The Warrant was immediately exercisable and was exercised via a net share settlement exercise on
October 6, 2009, resulting in the issuance of 276,143 shares of the Company’s common stock. The Agreement
also included up to a $1,000,000 sublimit for stand-by letters of credit.

On November 4, 2009, effective September 30, 2009, the Company entered into a Consent, Waiver and First

Loan Modification Agreement with SVB, which amended, among other things, the financial covenants in the
Agreement. On March 26, 2010, the Company entered into a Waiver and Second Loan Modification Agreement
with SVB, which amended, among other things, the financial covenants in the Agreement and waived a
compliance violation which occurred during February 2010.

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

On September 13, 2010 the Company entered into an Amended and Restated Loan and Security Agreement

with SVB and an Export-Import Bank Loan and Security Agreement (the “Amended Agreement”). The
Amended Agreement increased the Company’s credit facility from $10,000,000 to approximately $14,000,000.
The Amended Agreement also increased the Company’s borrowing capacity under the revolving loan facility by
expanding total availability, eliminating a Term Loan reserve requirement, adding a sublimit secured by certain
of the Company’s foreign accounts receivable and inventory up to $2,000,000 and adding incremental borrowing
availability secured by a portion of the Company’s domestic inventory. Interest on the term loan accrued at a rate
of 10.0% per year, and interest on the revolving loan accrued at a fluctuating rate equal to SVB’s announced
prime rate of interest, subject to a floor of 4.0%, plus between 1.0% and 2.0%, depending on the Company’s
Adjusted Quick Ratio (as defined in the Agreement). Principal on the term loan was being paid over 36 months
in equal principal payments of $180,556 plus applicable interest. The Amended Agreement was to mature on
April 30, 2012 and was secured by all of the Company’s assets, including intellectual property.

On March 15, 2011 the Company and SVB entered into a First Loan Modification Agreement (the “First

Loan Modification Agreement”) and an Export-Import Bank First Loan Modification Agreement (the “First
Ex-Im Agreement” and, collectively with the First Loan Modification Agreement, the “ First Modification
Agreements”) which set forth certain amendments to the Company’s credit facility with SVB. The First Loan
Modification Agreement provided for a new $7,500,000 term loan. The proceeds from the term loan were used to
repay the amount outstanding under the existing SVB term loan of $2,500,000. The balance was invested in
short-term investments. The new term loan has a five-year term, and principal payments in the amount of
$125,000, together with accrued interest, are due and payable monthly. The modified term loan accrues interest
at a fixed rate of 6.75%.

The First Modification Agreements also provide for a two-year extension of the maturity date of the existing

revolving credit facility from April 30, 2012 to April 30, 2014. The applicable borrowing rate was reduced to
0.25% to 1.25% above the prime rate. The maximum borrowing amount under the revolving facility remained at
$10,000,000.

On February 2, 2012 the Company and SVB entered into a Second Loan Modification Agreement (the
“Second Loan Modification Agreement”) and an Export-Import Bank Second Loan Modification Agreement (the
“Second Ex-Im Agreement” and, collectively with the Second Loan Modification Agreement, the “Second
Modification Agreements”) which set forth certain amendments to the Company’s credit facility with SVB. The
Second Modification Agreements provided for a new $10,000,000 term loan in addition to the $10,000,000
revolving loan. The proceeds from the term loan were used to repay the amount outstanding under the existing
SVB term loan of $6,125,000. The balance was invested in cash and cash equivalents and short-term
investments. The new term loan has a five year term, and principal payments in the amount of $166,667, together
with accrued interest, are due and payable monthly. The modified term loan accrues interest at a fixed rate of
6.75%.

The Second Modification Agreements also provided for a change to a Liquidity Ratio covenant to replace
the existing Adjusted Quick Ratio covenant. The applicable borrowing rate on the revolving facility is 0.25% to
1.25%, as determined by the Liquidity Ratio.

The Amended Agreement, as modified, contains covenants that include, among others, covenants that limit

the Company’s and its subsidiaries’ ability to dispose of assets, enter into mergers or acquisitions, incur
indebtedness, incur liens, pay dividends or make distributions on the Company’s capital stock, make investments
or loans, and enter into certain affiliate transactions, in each case subject to customary exceptions for a credit
facility of this size and type. Additional covenants apply when the Company has outstanding borrowings under
the revolving loan facility or when the Company achieves specific covenant milestones. Financial covenants

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

under the credit facility, as amended, include a minimum EBITDA, a limitation on capital expenditures, and a
minimum adjusted quick ratio. Further, a minimum fixed charge ratio applies when the Company achieves
specific covenant milestones. The occurrence of an event of default could result in an increase to the applicable
interest rate by 3.0%, an acceleration of all obligations under the Amended Agreement, an obligation of the
Company to repay all obligations in full and a right by SVB to exercise all remedies available to it under the
Amended Agreement and related agreements including the Guaranty and Security Agreement. As of and for the
period ended December 31, 2011, the Company was in compliance with all of the financial covenants of the
amended and modified credit facility. In addition, if the guarantee by the Export-Import Bank of the United
States ceases to be in full force and effect, the Company must repay all loans under the Export-Import agreement.

As of December 31, 2011 the Company had no borrowings under the revolving credit facility and borrowing

availability of $8,870,413. Also as of December 31, 2011, the Company had $6,375,000 outstanding under its
term loan, which includes $1,500,000 classified as current maturities of long-term debt.

The Warrant that was issued with the initial SVB agreement had been recorded as a discount on long-term

debt at its relative fair value and was being amortized over the term of the loan. Accelerated amortization
expense of $78,873 was recorded in March 2011 due to the credit facility modification. For the years ended
December 31, 2011 and 2010, amortization expense related to the debt discount totaled $21,707 and $185,314,
respectively.

In addition to the accelerated amortization of the Warrant, the Company also recorded $74,228 of expense

related to deferred financing costs and other fees as a result of the credit facility modification in March 2011.

As of December 31, 2011 the effective interest rate on borrowings under the modified term loan, including

debt issuance costs, was 8.0%. On June 20, 2011, the Company cancelled an outstanding letter of credit for
$250,000 issued to its corporate credit card program provider which was to expire on July 31, 2011. As of
December 31, 2011 no letters of credit were outstanding.

As of December 31, 2011 the Company had capital leases for computer equipment that expire at various

terms through 2015. The cost of the assets under lease was $267,408. The assets are depreciated over their
estimated useful lives, which equal the terms of the leases. Accumulated amortization on the capital leases was
$165,743 at December 31, 2011.

Maturities on long-term debt, including capital lease obligations are as follows:

2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2013 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2014 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2015 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2016 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$1,542,848
1,525,263
1,516,310
1,509,202
375,000

Total maturities on long-term debt and capital lease . . . . . . . . . . . . . . . . .

$6,468,623

As of December 31, 2010, the Company had no borrowings under its revolving credit facility and borrowing

availability of $8,136,523. Also as of December 31, 2010, the Company had $2,888,889 outstanding under its
term loan, which included $2,166,667 classified as current maturities of long-term debt. As of December 31,
2010 the Company had an outstanding letter of credit of $250,000 issued to its corporate credit card program
provider.

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

10. 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 2014. Future minimum
lease payments under non-cancelable operating leases are as follows:

2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2013 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2014 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 766,891
581,804
16,850

Total

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

$1,365,545

Rent expense was approximately $685,247, $668,219 and $793,845 in 2011, 2010, and 2009, respectively.

Royalty Agreements. The Company has certain royalty agreements in place with terms that include the
payment of royalties based on product revenue from sales of current products. One royalty agreement, which was
effective January 1, 2010, has a rate of 1.5% of product sales and includes minimum quarterly payments of
$50,000 through 2015 and a maximum of $2,000,000 in total royalties over the term of the agreement. Another
royalty agreement, which was effective in 2003 and has a term of at least twenty years, has royalty rates of 5% of
product sales. Parties to the royalty agreements have the right at any time to terminate the agreement immediately
for cause. Royalty expense of $505,247, $331,652 and $205,082 was recorded as part of cost of revenue for the
years ended December 31, 2011, 2010 and 2009, respectively.

Purchase Agreement. On June 15, 2007 the Company entered into a purchase agreement with MicroPace

Pty Ltd Inc., (“MicroPace”). The agreement, as amended, provides for MicroPace to produce 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 40 units
during the period December 1, 2010 through December 31, 2011 to extend exclusivity through 2012 and an
additional 40 units during 2012 to extend exclusivity through December 31, 2013. A total of 56 units were
purchased by the Company between December 1, 2010 and December 31, 2011, thereby extending exclusive
distribution rights through December 31, 2012. Units purchased in excess of yearly minimums reduce future
minimum purchase requirements.

Distributor Termination. In July 2010 the Company terminated a distributor agreement with a European

distributor. Under the terms of the agreement, the Company paid the distributor €200,000 (approximately
$260,000), repurchased saleable disposable product inventory for approximately €107,000 (approximately
$140,000) and paid €75,000 (approximately $98,000) for capital equipment. Additionally, the Company entered
into a consulting agreement with the distributor to provide ongoing consulting services through September 30,
2012. In exchange for these services, beginning October 1, 2010, the distributor will earn €50,000
(approximately $65,000) per quarter for a total of €400,000 (approximately $520,000). Additionally, during the
third quarter of 2010 the distributor earned €30,000 (approximately $40,000) for consulting services.

Legal. The Company is not party to any material pending or threatened litigation, except as described

below:

Class Action Lawsuits

AtriCure, Inc. 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

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

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 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. Although the Company admitted no wrongdoing, as of December 31, 2009, the Company recorded
a liability of $2,000,000, which represented an estimate of the potential defense and/or settlement costs. In
addition, the Company recorded a related receivable of $2,000,000 from its insurance carrier for the potential
defense and/or settlement costs, as recovery was expected beyond a reasonable doubt. On October 22, 2010, the
parties signed a Definitive Stipulation of Settlement agreement for $2,000,000, which was subject to notice to the
class as well as approval by the court, which occurred in May 2011. The Company’s insurance carrier paid the
claim in full in June 2011.

On December 12, 2008 AtriCure, Inc. and certain of its current executive officers were named in a putative

class action lawsuit which is now captioned In re AtriCure, Inc. Securities Litigation, filed in the U.S. District
Court for the Southern District of Ohio, Western Division. The plaintiffs allege violations of Sections10(b) and
20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder and seek unspecified
damages against AtriCure, Inc. and certain of its current executive officers. The plaintiffs allege, 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 caused the filing of false claims for
reimbursement. The class period alleged ran from May 10, 2007 through October 31, 2008. In July 2009 the
Company filed a motion to dismiss, and in September 2009 the plaintiffs filed their memorandum in opposition
to the Company’s motion to dismiss, to which the Company responded on November 9, 2009. On March 29,
2010, the court granted in part and denied in part the Company’s motion to dismiss and, in particular, dismissed
the claim that the Company caused the filing of false claims for reimbursement. On October 7, 2010, the court
ordered final approval of the settlement for $2,750,000, which was funded by the Company’s insurance carrier.

Department of Justice Investigation

On October 27, 2008 the Company received a letter from the Department of Justice (“DOJ”) informing the

Company that it was conducting an investigation for potential False Claims Act (“FCA”) and common law
violations relating to its surgical ablation devices. Specifically, the letter stated that the DOJ was investigating the
Company’s marketing practices utilized in connection with its surgical ablation system to treat AF, a specific use
outside the FDA’s 510(k) clearance. The letter also stated that the DOJ was investigating whether the Company
instructed hospitals to bill Medicare for cardiac surgical ablation using incorrect billing codes. The Company
cooperated with the investigation and operated its business in the ordinary course during the investigation. As of
December 31, 2009, the Company reached a tentative settlement with the DOJ to resolve the investigation and
recorded a liability and charged operating expenses for a total of $3,955,405, which represented the net present
value of the proposed settlement amount to be paid to the DOJ, the Relator, and Relator’s counsel (total
payments based on the settlement inclusive of interest were estimated to be $4,350,000, payable over five years).

On February 2, 2010 the settlement was finalized pursuant to the preliminary terms and the Company
entered into a settlement agreement with the DOJ, the Office of the Inspector General (“OIG”), and the Relator in
the qui tam complaint discussed below. The settlement agreement definitively resolved all claims related to the
DOJ investigation. The Company did not admit nor will it admit to any wrongdoing in connection with the
settlement. As of December 31, 2011 the Company had made $1,262,500 in payments (including interest), and
had a liability related to this settlement totaling $2,933,620, of which $703,473 was classified as current.

As part of the resolution, the Company also entered into a five year Corporate Integrity Agreement with the
OIG. This agreement acknowledges the existence of the Company’s corporate compliance program and provides

76

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

for certain other compliance-related activities during the five year term of the agreement. Those activities include
specific written standards, monitoring, training, education, independent review, disclosure and reporting
requirements.

Qui Tam Complaint

On July 10, 2009 a copy of a qui tam complaint against the Company was unsealed. The qui tam complaint,

filed in the U.S. District Court for the Southern District of Texas, was originally filed by the Relator in August
2007. The complaint, which was related to the DOJ investigation, alleged a cause of action under the FCA
relating to the Company’s alleged marketing practices in connection with its surgical cardiac ablation devices. In
August 2009 the DOJ declined to intervene in the qui tam complaint. The qui tam complaint was settled in
February 2010 in accordance with the DOJ settlement agreement above.

The Company may from time to time become a party to additional legal proceedings.

11. INCOME TAXES

The Company files federal, state, and foreign income tax returns in jurisdictions with varying statutes of

limitations. Income taxes are computed using the asset and liability method in accordance with FASB ASC 740
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 does not expect any significant unrecognized tax benefits to
arise over the next twelve months.

The detail of deferred tax assets and liabilities at December 31 is as follows:

2011

2010

Deferred tax assets:

Net operating loss carryforward . . . . . . . . . . . . . . . . . . . . . . . . . .
Research and development credit carryforward . . . . . . . . . . . . . .
Equity compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accruals and reserves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fixed assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other, net

$ 20,819,351
3,597,046
3,473,109
832,021
294,453
270,978
28,458
1,008

$ 19,568,885
3,265,636
3,093,142
891,977
208,721
16,687
265,075
1,540

Subtotal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Less valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

29,316,424
(29,316,424)

27,311,663
(27,311,663)

Total

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

$

—

$

—

The Company’s provision for income taxes is as follows:

Current income tax expense (benefit) . . . . . . . . . . . . . . .
Deferred tax benefit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Increase in valuation allowance . . . . . . . . . . . . . . . . . . .

$

30,888
(2,004,762)
2,004,762

$

19,050
(1,117,681)
1,117,681

$

(58,639)
(4,027,943)
4,027,943

Total income tax expense (benefit) . . . . . . . . . . . . .

$

30,888

$

19,050

$

(58,639)

2011

2010

2009

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The Company has a federal net operating loss carryforward of $58,017,143 which will begin to expire in
2021 and state net operating loss carryforwards of $25,247,497 which have varying expirations ranging from
5 years to 20 years. The Company also has a foreign net operating loss carryforward of approximately
$6,629,171 which will begin to expire in 2016. Additionally, the Company has a federal research and
development credit carryforward of $3,597,046 which will begin to expire in 2022.

The Company’s 2011, 2010 and 2009 effective income tax rates differ from the federal statutory rate as

follows:

Federal tax at statutory rate . . . . .
Federal R&D credit
. . . . . . . . . . .
Valuation allowance . . . . . . . . . . .
Goodwill impairment . . . . . . . . . .
DOJ Settlement
. . . . . . . . . . . . . .
State income taxes . . . . . . . . . . . .
Foreign NOL rate change . . . . . . .
Foreign tax rate differential . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . .

2011

2010

2009

34.00% $(1,844,367)
(331,410)
6.11
2,011,772
(37.09)
—
—
—
—
2.90
—
(1.49)
(5.00)

—
80,583
271,478

(157,168)

34.00% $(1,290,415)
(342,747)
9.03
(29.45)
1,117,681
—
—
(3.12)
(3.29)
(3.63)
(4.04)

118,504
124,915
137,929
153,183

—
—

34.00% $(5,628,232)
(307,050)
1.85
4,027,943
(24.33)
1,305,885
(7.89)
640,326
(3.87)
(295,697)
1.79
(49,140)
0.30
131,903
(0.80)
115,423
(0.70)

Effective tax rate . . . . . . . . . . . . .

(0.57)% $

30,888

(0.50)% $

19,050

0.35% $

(58,639)

The Company’s pre-tax book loss for AtriCure, Inc. and its subsidiary, AtriCure Europe B.V., was

($4,529,238) and ($895,367), respectively, for 2011, ($2,240,034) and ($1,532,539), respectively, for 2010 and
($15,001,246) and ($1,552,381), respectively, for 2009.

On January 1, 2007 the Company adopted the provisions of FIN 48 (codified as ASC 740). Application of
the provisions did not result in any change to the Company’s tax account balances. The Company has continued
to examine its tax positions and has concluded that each meets the more-likely-than-not recognition threshold of
ASC 740 and is appropriately measured. 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. All of the
Company’s federal, state and foreign income tax returns open under the statutes of limitations remain subject to
examination.

12. CONCENTRATIONS

During fiscal 2011, 2010 and 2009 approximately 20.9%, 19.4% and 22.0%, respectively, of the Company’s

total net revenue was derived from its top ten customers. During 2011, 2010, and 2009 no customer accounted
for more than 10% of the Company’s revenue.

The Company maintains cash and cash equivalents balances which at times exceed FDIC limits. As of
December 31, 2011, $9,912,360 of the cash and cash equivalents balance was in excess of the FDIC limits.

13. RELATED PARTY

During February 2009 the Company entered into a consulting agreement with Enable Medical

Technologies, an entity founded and owned by Michael D. Hooven, the Company’s co-founder and also one of

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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

its directors. Under the terms of the agreement, Enable Medical Technologies provided research and
development consulting services related to product and procedural development activities. Under the agreement,
Enable Medical Technologies received $216,000 as a development fee and, upon completion of certain
milestones, earned an additional $15,000. The agreement expired in July 2009.

14. EMPLOYEE BENEFIT PLANS

The Company sponsors the AtriCure, Inc. 401(k) Plan, a defined contribution plan covering substantially all

employees of the Company (the “Plan”). The Plan was amended effective January 1, 2009 primarily to reflect
modifications to the definition of compensation and employee eligibility. The Plan was amended again effective
September 1, 2011 to reflect modifications to the Plan due to a change in Plan Administrator. Eligible employees
may contribute up to $16,500 of their pre-tax annual compensation (up to $22,000 for participants over age 50).
During 2011, the Company made matching contributions of 25% of the first 6% of employee contributions to the
Plan. Employer contributions to the Plan were suspended during 2010 and 2009. The Company’s matching
contributions expensed during 2011 were $221,453. Additional amounts may be contributed to the Plan at the
discretion of the Company’s board of directors. No such discretionary contributions were made during 2011,
2010 or 2009.

15. 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”).

During the fourth quarter of 2009 the Company identified a computational error in the calculation of its
employee share-based compensation expense for current and prior year periods after upgrading to a new version
of the Company’s third-party equity software. The well-known equity accounting software incorrectly calculated
share-based compensation expense by inappropriately applying forfeiture rates over the vesting periods of the
share awards. The correction of the error during the fourth quarter of 2009 resulted in changes to the timing of
share-based compensation expense over the vesting period of the awards during the relevant periods, but did not
change the cumulative share-based compensation expense related to those awards. Because share-based
compensation expense is a non-cash item, there is no impact to net cash provided by operations in any period.
The cumulative impact of the error was $495,629, which was included in operating expenses within the 2009
Consolidated Statement of Operations.

The Company believes the correction of this error is not material to its previously issued historical

consolidated financial statements and the Company does not plan to restate prior periods that were impacted by
this error.

2001 Plan and 2005 Plan

The 2001 Plan is no longer used for granting incentives. 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 (currently the Compensation 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.

79

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Options granted under the 2001 Plan and the 2005 Plan 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.

As of December 31, 2011 5,812,198 shares of common stock had been 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 the 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, 2011 an additional 509,067 shares were authorized for issuance under the 2005 Plan,

representing 3.25% of the outstanding shares on that date. As of December 31, 2011 there were 1,006,592 shares
available for future grants under the plans.

Activity under the plans during 2011 was as follows:

Stock Options

Outstanding at January 1, 2011 . . . . . . . . . . . . . . . . . . . . . . .
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cancelled or forfeited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exercised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Number of
Shares
Outstanding

2,787,354
263,500
(78,089)
(436,992)

Outstanding at December 31, 2011 . . . . . . . . . . . . . . . . . . . .

2,535,773

Weighted
Average
Exercise
Price

$ 7.82
$12.26
$ 8.06
$ 3.63

$ 9.00

Vested and expected to vest . . . . . . . . . . . . . . . . . . . . . . . . . .

2,513,923

$ 8.98

Exercisable at December 31, 2011 . . . . . . . . . . . . . . . . . . . .

1,969,803

$ 9.07

Weighted
Average
Remaining
Contractual
Term

Aggregate
Intrinsic
Value

5.72

5.69

4.94

$6,666,735

$6,634,987

$5,001,966

Restricted Stock

Outstanding at January 1, 2011 . . . . . . . . . . . . . . . . . . . . . . .
Awarded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Forfeited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Released . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Number of
Shares
Outstanding

371,700
188,500
(37,587)
(119,702)

Outstanding at December 31, 2011 . . . . . . . . . . . . . . . . . . . .

402,911

Weighted
Average
Grant Date
Fair Value

$ 4.39
$11.61
$ 5.75
$ 4.27

$ 7.68

80

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Activity under the plans during 2010 was as follows:

Stock Options

Outstanding at January 1, 2010 . . . . . . . . . . . . . . . . . . . . . . .
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cancelled or forfeited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exercised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Number of
Shares
Outstanding

2,533,977
447,750
(109,369)
(85,004)

Outstanding at December 31, 2010 . . . . . . . . . . . . . . . . . . . .

2,787,354

Weighted
Average
Exercise
Price

$ 8.20
$ 5.58
$10.32
$ 4.16

$ 7.82

Vested and expected to vest . . . . . . . . . . . . . . . . . . . . . . . . . .

2,750,555

$ 7.85

Exercisable at December 31, 2010 . . . . . . . . . . . . . . . . . . . .

2,024,371

$ 8.23

Weighted
Average
Remaining
Contractual
Term

Aggregate
Intrinsic
Value

5.96

5.92

5.00

$8,490,966

$8,335,814

$5,667,075

Restricted Stock

Outstanding at January 1, 2010 . . . . . . . . . . . . . . . . . . . . . . .
Awarded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Forfeited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Released . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Number of
Shares
Outstanding

360,909
162,600
(5,300)
(146,509)

Outstanding at December 31, 2010 . . . . . . . . . . . . . . . . . . . .

371,700

Weighted
Average
Grant Date
Fair Value

$ 3.26
$ 5.69
$ 3.17
$ 3.09

$ 4.39

The total intrinsic value of options exercised during the years ended December 31, 2011, 2010 and 2009 was

$3,403,031, $311,542 and $65,403, respectively. As a result of the Company’s tax position, no tax benefit was
recognized related to the stock option exercises. For 2011, 2010 and 2009, $1,588,065, $353,356 and $33,335,
respectively, in cash proceeds was included in the Company’s Consolidated Statements of Cash Flows as a result
of the exercise of stock options. The total fair value of performance shares vested during 2011 was $1,243,200.
The total fair value of restricted stock vested during 2011, 2010 and 2009 was $1,456,941, $980,683 and
$1,246,247, respectively.

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 and
restricted stock grants.

The Company recognized expense related to stock options and restricted stock for 2011, 2010, and 2009 of

$2,617,402, $2,178,338 and $3,577,317, respectively. As of December 31, 2011 there was $5,481,943 of
unrecognized compensation costs related to non-vested stock option and restricted stock arrangements
($2,860,355 relating to stock options and $2,621,588 relating to restricted stock). This cost is expected to be
recognized over a weighted-average period of 2.1 years for stock options and 1.5 years for restricted stock.

The Company has issued performance shares to certain employees and consultants to incent and reward
them for the achievement of specified performance over various service periods. The participants receive awards
for a specified number of shares of the Company’s common stock at the beginning of the award period, which
entitles the participants to the shares at the end of the award period if achievement of the specified metrics and
service requirements occurs. During the first quarter of 2011 111,000 performance shares (gross) were released

81

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

related to the participants’ achievement of certain specified metrics. During the first quarter of 2012 10,000
shares of common stock were issued due to the participants meeting all of the specified metrics. In accordance
with FASB ASC 718, the Company estimates the number of shares to be granted based upon the probability that
the performance metric and service period will be achieved. The fair value of the estimated award, based on the
market value of the Company’s stock on the date of award, is expensed over the award period. The probability of
meeting the specified metrics is reviewed quarterly. During 2011 and 2010 the Company recognized expense
related to the performance shares of $40,400 and $380,337, respectively. As of December 31, 2011 there was no
unrecognized compensation cost related to non-vested share-based compensation arrangements associated with
performance shares.

Employee Stock Purchase Plan (ESPP)

During the second quarter of 2008 the Company established its 2008 Employee Stock Purchase Plan
(“ESPP”) which is available to eligible employees as defined 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 not purchase more
than $25,000 of the Company’s common 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 calendar year, not to exceed 600,000 shares, or (ii) a
lesser amount determined by the Board of Directors. At December 31, 2011, there were 862,902 shares available
for future issuance under the ESPP, including 313,272 shares approved for issuance by the Company’s Board of
Directors effective January 1, 2011. Share-based compensation expense with respect to the ESPP was $273,488,
$194,021 and $103,191 for 2011 and 2010, and 2009, respectively.

Valuation and Expense Information Under FASB ASC 718

The following table summarizes share-based compensation expense related to employee share-based

compensation under FASB ASC 718 for 2011, 2010 and 2009. This expense was allocated as follows:

Cost of revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Research and development expenses . . . . . . . . . . . . . . . . .
Selling, general and administrative expenses . . . . . . . . . . .

$ 161,331
473,781
2,296,178

$ 146,154
537,221
2,069,321

$ 284,817
757,660
2,823,444

Total

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

$2,931,290

$2,752,696

$3,865,921

2011

2010

2009

In calculating compensation expense, the fair value of the options is estimated on the grant date using the

Black-Scholes model including the following assumptions:

2011

2010

2009

Risk-free interest rate . . . . . . . . . . .
Expected life of option (years) . . . .
Expected volatility of stock . . . . . . .
Weighted-average volatility . . . . . .
Dividend yield . . . . . . . . . . . . . . . . .

1.59 - 2.78%
6.00 to 6.25

1.79 - 2.88%
6.00 to 6.25
71.00 - 72.00% 66.00 - 71.00% 53.50 - 62.00%
69.30%
0.00%

2.07 - 3.08%
6.00 to 6.25

60.43%
0.00%

71.58%
0.00%

82

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

For grants made before December 31, 2010 the Company’s estimate of volatility was weighted between the

Company’s trading history and other companies in the industry. Beginning January 1, 2011 the Company’s
estimate of volatility is based solely on the Company’s trading history. 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. The Company uses this method because it does not have
sufficient historical exercise data to provide a reasonable basis upon which to estimate the expected term due to
the limited period of time its equity shares have been publicly traded.

The fair value of restricted stock awards is based on the market value of the Company’s stock on the date of

the awards.

Based on the assumptions noted above, the weighted average estimated fair value per share of the stock

options and restricted stock granted for 2011, 2010 and 2009 was as follows:

Stock options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restricted stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 8.01
11.61

$3.59
5.69

$1.53
2.48

2011

2010

2009

Non-Employee Stock Compensation

The Company has issued nonstatutory common stock options to consultants to purchase shares of common
stock as a form of compensation for services provided to the Company. Such options vest over a service period
ranging from immediately to four years. After January 1, 2006 all stock options to non-employee consultants
have a four year vesting period and 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, was determined using
the Black-Scholes model. There were no non-employee stock options granted during 2011 and 2010. The values
attributable to the non-vested portion of the non-employee stock options have been amortized over the service
period on a graded vesting method and the vested portion of these stock options was remeasured at each vesting
date.

The Company accounts for the options granted to non-employees prior to their vesting date in accordance

with ASC 505-50, Equity-Based Payments to Non-Employees. Because these options do not contain specific
performance provisions, there is no measurement date of fair value until the options vest. Therefore, the fair
value of the options granted and outstanding prior to their vesting date is remeasured each reporting period. Stock
compensation expense with respect to unvested non-employee stock options totaled $7,698, $19,154 and $19,675
for 2011, 2010 and 2009, respectively.

Once these non-employee stock option grants have fully vested, the awards no longer fall within the scope

of ASC 505-50. Because the stock options require settlement by the Company’s delivery of registered shares and
because the tax withholding provisions in the awards allow the stock options to be partially net-cash settled, these
vested stock options are no longer eligible for equity classification and are, thus, accounted for as derivative
liabilities under FASB ASC 815 until the stock options are ultimately either exercised or forfeited. Accordingly,
the vested non-employee stock options are classified as liabilities and remeasured at fair value through earnings
at each reporting period. During 2011, 2010 and 2009, $22,649, ($164,959) and ($140,620), respectively, of
income (expense) was recorded as a result of the remeasurement of the fair value of these stock options. As of
December 31, 2011 and 2010, respectively, fully vested stock options to acquire 33,603 and 41,049 shares of

83

ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

common stock held by non-employee consultants remained unexercised and a liability of $208,007 and $268,478
was included in accrued liabilities in the Consolidated Balance Sheets as of December 31, 2011 and 2010,
respectively.

16. SEGMENT AND GEOGRAPHIC INFORMATION

The Company considers reporting segments in accordance with FASB ASC 280, “Segment Reporting.” The
Company develops, manufactures, and sells devices designed primarily for the surgical ablation of cardiac tissue
for the treatment of atrial fibrillation and systems designed for the exclusion of the left atrial appendage. 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 reportable segment.

Geographic revenue was as follows:

Revenue:

2011

2010

2009

United States . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
International

$48,931,420
15,470,989

$47,517,886
11,488,302

$44,119,201
10,414,357

Total

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

$64,402,409

$59,006,188

$54,533,558

Substantially all of the Company’s long-lived assets are located in the United States.

17. 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,

2011

2010

2011

2010

2011

2010

2011

2010

$15,637
11,893
(1,074)
(1,273)

$13,952
10,679
(1,690)
(2,009)

$16,780
12,277
(771)
(947)

$14,192
11,229
(666)
(765)

$15,222
11,085
(1,191)
(1,156)

$14,473
11,174
(831)
(1,029)

$16,764
11,741
(1,695)
(2,079)

$16,389
12,306
(238)
12

Operating Results:
Revenue . . . . . . . . . . . . . . . .
Gross profit . . . . . . . . . . . . .
Loss from operations . . . . . .
Net income (loss)
. . . . . . . .
Net income (loss) per share

(basic and diluted) . . . . . .

$ (0.08) $ (0.13) $ (0.06) $ (0.05) $ (0.07) $ (0.07) $ (0.13) $

0.00

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.

84

SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS

Allowance for doubtful accounts receivable
Year ended December 31, 2011 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2010 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2009 . . . . . . . . . . . . . . . . . . . . .

Reserve for sales returns and allowances
Year ended December 31, 2011 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2010 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2009 . . . . . . . . . . . . . . . . . . . . .

Allowance for inventory valuation
Year ended December 31, 2011 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2010 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2009 . . . . . . . . . . . . . . . . . . . . .

Valuation allowance for deferred tax assets
Year ended December 31, 2011 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2010 . . . . . . . . . . . . . . . . . . . . .
Year ended December 31, 2009 . . . . . . . . . . . . . . . . . . . . .

Beginning
Balance

Additions

Deductions

Ending
Balance

$

$

$

$

$

8,764
24,400
40,480

53,353
3,445
71,251

28,836
7,987
—

$

906
23,623
16,080

52,000
55,353
—

$ 65,353
3,445
67,806

31,506
183,170
183,895

$ 311,274
46,617
25,346

$136,468
198,281
26,071

$

$

$

36,694
8,764
24,400

40,000
53,353
3,445

206,312
31,506
183,170

$27,311,663
26,193,982
22,166,000

$2,004,762
1,117,681
4,028,000

$ — $29,316,425
27,311,663
26,194,000

—
—

85

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.

Changes in Internal Control over Financial Reporting

There were no changes in the Company’s internal control over financial reporting that occurred during the
quarter ended December 31, 2011 that have materially affected, or are reasonably likely to materially affect, the
Company’s internal control over financial reporting.

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, 2011. No matter how well designed, because of inherent limitations
in all control systems, internal control over financial reporting may not prevent or detect misstatements should
they occur. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that

86

controls may become inadequate because of changes in conditions, or that the degree of compliance with the
control procedures may deteriorate. 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, 2011. Deloitte & Touche LLP, the Company’s
independent registered public accounting firm has audited the consolidated financial statements included in this
Annual Report on Form 10-K and, as part of its audit, has issued an attestation report on the effectiveness of the
Company’s internal control over financial reporting. The attestation report can be found on the following page as
part of this Item 9A.

87

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, 2011, 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, 2011, 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, 2011 of the Company and our report dated March 12, 2012 expressed an unqualified
opinion on those financial statements and financial statement schedule.

/s/ Deloitte & Touche LLP
Cincinnati, Ohio
March 12, 2012

88

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
2012 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission within 120 days
after the end of 2011 (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 following table summarizes information about our equity compensation plans as of December 31, 2011.

Plan Category

Number of securities to
be issued upon exercise
of outstanding options,
warrants and rights (1)
(a)

Weighted-average
exercise price of
outstanding options,
warrants and rights(2)
(b)

Number of securities
remaining available for
future issuance under
equity compensation
plans (excluding
securities reflected in
column (a))
(c)

Equity compensation plans approved by

security holders(3) . . . . . . . . . . . . . . . . . . . . . .

2,948,684

Equity compensation plans not approved by

security holders . . . . . . . . . . . . . . . . . . . . . . .

—

Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2,948,684

$9.00

—

$9.00

1,006,592

—

1,006,592

(1) Represents outstanding stock options, restricted stock and performance shares as of December 31, 2011.
(2) The weighted average exercise price is calculated without taking into account restricted stock and

performance shares that will become issuable, without any cash consideration or other payment, as vesting
requirements and/or performance goals are achieved.

(3) Amounts include awards under our 2001 Stock Option Plan and 2005 Equity Incentive Plan but exclude

shares purchased under our 2008 Employee Stock Purchase Plan.

The remaining 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.

89

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 in this Form 10-K or incorporated by reference in this Form 10-K:

Exhibit No.

Description

3.1

3.2

4.1

4.2

4.3

4.4

4.5

4.6

10.1#

10.2

10.3

10.4

10.5#

10.6#

Amended and Restated Certificate of Incorporation (incorporated by reference to our Registration
Statement on Form S-1 (Registration No. 333-124197), filed on April 20, 2005).

Second Amended and Restated Bylaws (incorporated by reference to our Registration Statement
on Form S-1 (Registration No. 333-124197) filed on April 20, 2005).

Amended and Restated Investors’ Rights Agreement, dated June 6, 2002 between AtriCure, Inc.
and each of the signatory Investors (incorporated by reference to Amendment No. 1 to our
Registration Statement on Form S-1 (Registration No. 333-124197), filed on June 14, 2005).

Amendment No. 1 to Amended and Restated Investors’ Rights Agreement, dated March 8, 2005
between AtriCure, Inc. and each of the signatory Investors (incorporated by reference to
Amendment No. 1 to our Registration Statement on Form S-1 (Registration No. 333-124197),
filed on June 14, 2005).

Specimen common stock certificate (incorporated by reference to Amendment No. 2 to our
Registration Statement on Form S-1 (Registration No. 333-124197), filed on July 7, 2005).

Warrant to purchase AtriCure, Inc. common stock issued to Silicon Valley Bank on May 1, 2009
(incorporated by reference to our Quarterly Report on Form 10-Q, filed on August 10, 2009).

Form of Senior Indenture dated as of July 1, 2011 between AtriCure, Inc. and U.S. Bank National
Association, as Trustee incorporated by reference to our Registration Statement on Form S-3
(Registration No. 333-175288), filed on July 1, 2011.

Form of Subordinated Indenture dated as of July 1, 2011 between AtriCure, Inc. and U.S. Bank
National Association, as Trustee incorporated by reference to our Registration Statement on
Form S-3 (Registration No. 333-175288), filed on July 1, 2011.

2001 Stock Option Plan (incorporated by reference to Amendment No. 1 to our Registration
Statement on Form S-1 (Registration No. 333-124197), filed on June 14, 2005).

Agreement, dated as of July 18, 2006, by and between AtriCure, Inc. and the Cleveland Clinic
(incorporated by reference to our Current Report on Form 8-K, filed on July 20, 2006).

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 (incorporated by reference to our Annual Report
on Form 10-K filed on March 16, 2009).

Amendment No. 2, effective as of December 28, 2009, to Agreement dated as of July 18, 2006 by
and between AtriCure, Inc. and the Cleveland Clinic (incorporated by reference to our Annual
Report on Form 10-K filed on March 30, 2010).

Employment Agreement, dated as of January 5, 2007, between AtriCure, Inc. and Julie A. Piton
(incorporated by reference to our Current Report on Form 8-K, filed on January 9, 2007).

Amendment of Employment Agreement, dated as of April 17, 2007, between AtriCure, Inc. and
Julie A. Piton (incorporated by reference to our Current Report on Form 8-K, filed on April 20,
2007).

90

Exhibit No.

Description

10.7#

10.8#

10.9#

10.10#

10.11#

10.12

10.13

10.14#

10.15#

10.16

10.17

10.18

10.19

10.20

10.21

10.22

Amendment No. 2 to Employment Agreement, effective as of January 1, 2010, between AtriCure,
Inc. and Julie A. Piton (incorporated by reference to our Current Report on Form 8-K, filed on
March 12, 2010).

Employment Agreement, dated as of February 9, 2007, between AtriCure, Inc. and David J.
Drachman (incorporated by reference to our Current Report on Form 8-K, filed on February 14,
2007).

Amendment No. 1 to Employment Agreement, effective as of January 1, 2010, between AtriCure,
Inc. and David J. Drachman (incorporated by reference to our Current Report on Form 8-K, filed
on March 12, 2010).

Employment Agreement, dated as of October 1, 2011, between AtriCure, Inc. and Patricia
Kennedy (incorporated by reference to our Quarterly Report on Form 10-Q, filed on November 4,
2011).

Employment Agreement, dated as of January 16, 2012, between AtriCure, Inc. and Andrew L. Lux
(incorporated by reference to our Current Report on Form 8-K, filed on January 17, 2012).

2005 Equity Incentive Plan, as amended on September 19, 2007 (incorporated by reference to
Exhibit 10.1 to the Registrant’s Form S-8 Registration Statement (File No. 333-152014) filed on
June 30, 2008).

2008 Employee Stock Purchase Plan (incorporated by reference to Exhibit 10.1 to the Registrant’s
Form S-8 Registration Statement (File No. 333-152013) filed on June 30, 2008).

Form of Performance Share Agreement (incorporated by reference to our Current Report on
Form 8-K, filed on October 31, 2008).

Amended Form of Performance Share Agreement (incorporated by reference to our Current
Report on Form 8-K, filed on March 30, 2009).

Settlement Agreement as of February 2, 2010 by and among the United States of America, acting
through the United States Department of Justice and on behalf of the Office of Inspector General
of the Department of Health and Human Services, the Company and the Relator (incorporated by
reference to our Current Report on Form 8-K, filed on February 5, 2010).

Corporate Integrity Agreement between the Office of Inspector General of the Department of
Health and Human Services and AtriCure, Inc. (incorporated by reference to our Current Report
on Form 8-K, filed on February 5, 2010).

Amended and Restated Loan and Security Agreement, dated as of September 13, 2010, between
Silicon Valley Bank and AtriCure, Inc. (incorporated by reference to our Current Report on
Form 8-K, filed on September 17, 2010).

Export-Import Bank Loan and Security Agreement, dated as of September 13, 2010, between
Silicon Valley Bank and AtriCure, Inc. (incorporated by reference to our Current Report on
Form 8-K, filed on September 17, 2010).

First Loan Modification Agreement, dated as of March 15, 2011, between Silicon Valley Bank and
AtriCure, Inc. (incorporated by reference to our Current Report on Form 8-K, filed on March 16,
2011).

Export-Import Bank First Loan Modification Agreement, dated as of March 15, 2011, between
Silicon Valley Bank and AtriCure, Inc. (incorporated by reference to our Current Report on
Form 8-K, filed on March 16, 2011).

Second Loan Modification Agreement, dated as of February 2, 2012, between Silicon Valley Bank
and AtriCure, Inc. (incorporated by reference to our Current Report on Form 8-K, filed on
February 2, 2012).

91

Exhibit No.

Description

10.23

21

23.1

31.1

31.2

32.1

32.2

Export-Import Bank Second Loan Modification Agreement, dated as of February 2, 2012, between
Silicon Valley Bank and AtriCure, Inc. (incorporated by reference to our Current Report on
Form 8-K, filed on February 2, 2012).

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.

101.INS*

XBRL Instance Document

101.SCH*

XBRL Taxonomy Extension Schema Document

101.CAL*

XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF *

XBRL Taxonomy Definition Linkbase Document

101.LAB*

XBRL Taxonomy Extension Label Linkbase Document

101.PRE *

XBRL Taxonomy Extension Presentation Linkbase Document

†

#
*

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.
XBRL (Extensible Business Reporting Language) information is furnished and not filed or a part of a
registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, is
deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, and otherwise is not
subject to liability under these sections.

92

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 12, 2012

Date: March 12, 2012

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 12, 2012.

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

93

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

94

Exhibit No.

Description

EXHIBIT INDEX

3.1

3.2

4.1

4.2

4.3

4.4

4.5

4.6

10.1#

10.2

10.3

10.4

10.5#

10.6#

10.7#

Amended and Restated Certificate of Incorporation (incorporated by reference to our Registration
Statement on Form S-1 (Registration No. 333-124197) filed on April 20, 2005)).

Second Amended and Restated Bylaws (incorporated by reference to our Registration Statement
on Form S-1 (Registration No. 333-124197) filed on April 20, 2005).

Amended and Restated Investors’ Rights Agreement, dated June 6, 2002 between AtriCure, Inc.
and each of the signatory Investors (incorporated by reference to Amendment No. 1 to our
Registration Statement on Form S-1 (Registration No. 333-124197), filed on June 14, 2005).

Amendment No. 1 to Amended and Restated Investors’ Rights Agreement, dated March 8, 2005
between AtriCure, Inc. and each of the signatory Investors (incorporated by reference to
Amendment No. 1 to our Registration Statement on Form S-1 (Registration No. 333-124197),
filed on June 14, 2005).

Specimen common stock certificate (incorporated by reference to Amendment No. 2 to our
Registration Statement on Form S-1 (Registration No. 333-124197), filed on July 7, 2005).

Warrant to purchase AtriCure, Inc. common stock issued to Silicon Valley Bank on May 1, 2009
(incorporated by reference to our Quarterly Report on Form 10-Q, filed on August 10, 2009).

Form of Senior Indenture dated as of July 1, 2011 between AtriCure, Inc. and U.S. Bank National
Association, as Trustee incorporated by reference to our Registration Statement on Form S-3
(Registration No. 333-175288), filed on July 1, 2011.

Form of Subordinated Indenture dated as of July 1, 2011 between AtriCure, Inc. and U.S. Bank
National Association, as Trustee incorporated by reference to our Registration Statement on
Form S-3 (Registration No. 333-175288), filed on July 1, 2011.

2001 Stock Option Plan (incorporated by reference to Amendment No. 1 to our Registration
Statement on Form S-1 (Registration No. 333-124197), filed on June 14, 2005).

Agreement, dated as of July 18, 2006, by and between AtriCure, Inc. and the Cleveland Clinic
(incorporated by reference to our Current Report on Form 8-K, filed on July 20, 2006).

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 (incorporated by reference to our Annual Report
on Form 10-K filed on March 16, 2009).

Amendment No. 2, effective as of December 28, 2009, to Agreement dated as of July 18, 2006 by
and between AtriCure, Inc. and the Cleveland Clinic (incorporated by reference to our Annual
report on Form 10-K filed on March 16, 2009).

Employment Agreement, dated as of January 5, 2007, between AtriCure, Inc. and Julie A. Piton
(incorporated by reference to our Current Report on Form 8-K, filed on January 9, 2007).

Amendment of Employment Agreement, dated as of April 17, 2007, between AtriCure, Inc. and
Julie A. Piton (incorporated by reference to our Current Report on Form 8-K, filed on April 20,
2007).

Amendment No. 2 to Employment Agreement, effective as of January 1, 2010, between AtriCure,
Inc. and Julie A. Piton (incorporated by reference to our Current Report on Form 8-K, filed on
March 12, 2010).

95

Exhibit No.

Description

10.8#

10.9#

10.10#

10.11#

10.12

10.13

10.14#

10.15#

10.16

10.17

10.18

10.19

10.20

10.21

10.22

Employment Agreement, dated as of February 9, 2007, between AtriCure, Inc. and David J.
Drachman (incorporated by reference to our Current Report on Form 8-K, filed on February 14,
2007).

Amendment No. 1 to Employment Agreement, effective as of January 1, 2010, between AtriCure,
Inc. and David J. Drachman (incorporated by reference to our Current Report on Form 8-K, filed
on March 12, 2010).

Employment Agreement, dated as of October 1, 2011, between AtriCure, Inc. and Patricia
Kennedy (incorporated by reference to our Quarterly Report on Form 10-Q, filed on November 4,
2011).

Employment Agreement, dated as of January 16, 2012, between AtriCure, Inc. and Andrew L. Lux
(incorporated by reference to our Current Report on Form 8-K, filed on January 17, 2012).

2005 Equity Incentive Plan (incorporated by reference to Exhibit 10.1 to the Registrant’s
Form S-8 Registration Statement (File No. 333-152014) filed on June 30, 2008).

2008 Employee Stock Purchase Plan (incorporated by reference to Exhibit 10.1 to the Registrant’s
Form S-8 Registration Statement (File No. 333-152013) filed on June 30, 2008).

Form of Performance Share Agreement (incorporated by reference to our Current Report on
Form 8-K, filed on October 31, 2008).

Amended Form of Performance Share Agreement (incorporated by reference to our Current
Report on Form 8-K, filed on March 30, 2009).

Settlement Agreement as of February 2, 2010 by and among the United States of America, acting
through the United States Department of Justice and on behalf of the Office of Inspector General
of the Department of Health and Human Services, the Company and the Relator (incorporated by
reference to our Current Report on Form 8-K, filed on February 5, 2010).

Corporate Integrity Agreement between the Office of Inspector General of the Department of
Health and Human Services and AtriCure, Inc. (incorporated by reference to our Current Report
on Form 8-K, filed on February 5, 2010).

Amended and Restated Loan and Security Agreement, dated as of September 13, 2010, between
Silicon Valley Bank and AtriCure, Inc. (incorporated by reference to our Current Report on
Form 8-K, filed on September 17, 2010).

Export-Import Bank Loan and Security Agreement, dated as of September 13, 2010, between
Silicon Valley Bank and AtriCure, Inc. (incorporated by reference to our Current Report on
Form 8-K, filed on September 17, 2010).

First Loan Modification Agreement, dated as of March 15, 2011, between Silicon Valley Bank and
AtriCure, Inc. (incorporated by reference to our Current Report on Form 8-K, filed on March 16,
2011).

Export-Import Bank First Loan Modification Agreement, dated as of March 15, 2011, between
Silicon Valley Bank and AtriCure, Inc. (incorporated by reference to our Current Report on Form
8-K, filed on March 16, 2011).

Second Loan Modification Agreement, dated as of February 2, 2012, between Silicon Valley Bank
and AtriCure, Inc. (incorporated by reference to our Current Report on Form 8-K, filed on
February 2, 2012).

96

Exhibit No.

Description

10.23

21

23.1

31.1

31.2

32.1

32.2

Export-Import Bank Second Loan Modification Agreement, dated as of February 2, 2012, between
Silicon Valley Bank and AtriCure, Inc. (incorporated by reference to our Current Report on
Form 8-K, filed on February 2, 2012).

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.

101.INS *

XBRL Instance Document

101.SCH*

XBRL Taxonomy Extension Schema Document

101.CAL*

XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF *

XBRL Taxonomy Definition Linkbase Document

101.LAB*

XBRL Taxonomy Extension Label Linkbase Document

101.PRE *

XBRL Taxonomy Extension Presentation Linkbase Document

†

#
*

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.
XBRL (Extensible Business Reporting Language) information is furnished and not filed or a part of a
registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, is
deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, and otherwise is not
subject to liability under these sections.

97

[THIS PAGE INTENTIONALLY LEFT BLANK]

AF