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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549





FORM 10-Q







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

For the quarterly period ended March 31, 2011

or



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

For the transition period from
 to

Commission File Number 000-51470





LOGO

AtriCure, Inc.

(Exact name of Registrant as specified in its charter)







|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Delaware                                                       |  | 34-1940305                          
|(State or other jurisdiction of
incorporation or organization) |  | (I.R.S. Employer Identification No.)

6217 Centre Park Drive

West Chester, OH 45069

(Address of principal executive offices)

(513) 755-4100

(Registrants telephone number, including area code)



(Former name, former address and former fiscal year, if changed
since last report)





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  x    NO   ̈

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

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





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

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

Indicate the number of shares outstanding of each of the issuers classes of common stock, as of the latest practicable date.



|                              |  |                              
|----------------------------- |  | -----------------------------
|Class                         |  | Outstanding at April 30, 2011
|Common Stock, $.001 par value |  | 16,070,797                   









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Table of Contents



|                              |  |                                                                                                    |    |      |    | 
|----------------------------- |  | -------------------------------------------------------------------------------------------------- | -- | ---- | -- | 
|                              |  |                                                                                                    |    | Page |   
|PART I. FINANCIAL INFORMATION |  |                                                                                                    |    |     
|                              |  |                                                                                                   
|Item 1.                       |  | Financial Statements                                                                               |    |      |    | 
|                              |  |                                                                                                   
|                              |  | Condensed Consolidated Balance Sheets as of March 31, 2011 and December 31, 2010                   |    |      | 3  | 
|                              |  | Condensed Consolidated Statements of Operations for the Three Months Ended March 31, 2011 and 2010 |    |      | 4  | 
|                              |  | Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2011 and 2010 |    |      | 5  | 
|                              |  | Notes to Condensed Consolidated Financial Statements                                               |    |      | 6  | 
|                              |  |                                                                                                   
|Item 2.                       |  | Managements Discussion and Analysis of Financial Condition and Results of Operations              |    |      | 20 | 
|                              |  |                                                                                                   
|Item 3.                       |  | Quantitative and Qualitative Disclosures About Market Risk                                         |    |      | 24 | 
|                              |  |                                                                                                   
|Item 4.                       |  | Controls and Procedures                                                                            |    |      | 24 | 
|                              | 
|PART II. OTHER INFORMATION    |  |                                                                                                    |    |     
|                              |  |                                                                                                   
|Item 1.                       |  | Legal Proceedings                                                                                  |    |      | 25 | 
|                              |  |                                                                                                   
|Item 1A.                      |  | Risk Factors                                                                                       |    |      | 25 | 
|                              |  |                                                                                                   
|Item 6.                       |  | Exhibits                                                                                           |    |      | 26 | 
|                              | 
|Signatures                    |  |                                                                                                    | 27 |     
|                              | 
|Exhibit Index                 |  |                                                                                                    | 28 |     



2



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PART I. FINANCIAL INFORMATION



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

ATRICURE, INC. AND SUBSIDIARY

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)



|                                                                                                                               |  |               |             |   |                  |   |             |  
|------------------------------------------------------------------------------------------------------------------------------ |  | ------------- | ----------- | - | ---------------- | - | ----------- | -
|                                                                                                                               |  | March 31,2011 |             |   | December 31,2010 |  
|Assets                                                                                                                         |  |               |             |   |                  |   |             |  
|Current assets:                                                                                                                |  |               |             |   |                  |   |             |  
|Cash and cash equivalents                                                                                                      |  | $             | 7,685,746   |   |                  | $ | 4,230,709   |  
|Short-term investments                                                                                                         |  |               | 7,973,664   |   |                  |   | 8,340,028   |  
|Accounts receivable, less allowance for doubtful accounts of $14,827 and $8,764, respectively                                  |  |               | 9,270,705   |   |                  |   | 9,480,064   |  
|Inventories, net                                                                                                               |  |               | 6,015,338   |   |                  |   | 5,680,033   |  
|Other current assets                                                                                                           |  |               | 3,003,966   |   |                  |   | 2,917,571   |  
|                                                                                                                               |  |               |             |   |                  |   |             |  
|Total current assets                                                                                                           |  |               | 33,949,419  |   |                  |   | 30,648,405  |  
|Property and equipment, net                                                                                                    |  |               | 2,554,327   |   |                  |   | 2,723,227   |  
|Intangible assets                                                                                                              |  |               | 72,500      |   |                  |   | 89,375      |  
|Other assets                                                                                                                   |  |               | 154,095     |   |                  |   | 254,707     |  
|                                                                                                                               |  |               |             |   |                  |   |             |  
|Total Assets                                                                                                                   |  | $             | 36,730,341  |   |                  | $ | 33,715,714  |  
|                                                                                                                               |  |               |             |   |                  |   |             |  
|                                                                                                                               |  |              
|Liabilities and Stockholders Equity                                                                                           |  |               |             |   |                  |   |             |  
|Current liabilities:                                                                                                           |  |               |             |   |                  |   |             |  
|Accounts payable                                                                                                               |  | $             | 4,437,344   |   |                  | $ | 4,511,516   |  
|Accrued liabilities                                                                                                            |  |               | 5,557,897   |   |                  |   | 6,330,405   |  
|Current maturities of long-term debt and capital lease obligations                                                             |  |               | 1,533,066   |   |                  |   | 2,193,356   |  
|                                                                                                                               |  |               |             |   |                  |   |             |  
|Total current liabilities                                                                                                      |  |               | 11,528,307  |   |                  |   | 13,035,277  |  
|Long-term debt and capital lease obligations                                                                                   |  |               | 6,053,836   |   |                  |   | 661,624     |  
|Other liabilities                                                                                                              |  |               | 3,113,395   |   |                  |   | 3,282,883   |  
|                                                                                                                               |  |               |             |   |                  |   |             |  
|Total Liabilities                                                                                                              |  |               | 20,695,538  |   |                  |   | 16,979,784  |  
|                                                                                                                               |  |              
|Commitments and contingencies (Note 7)                                                                                         |  |               |             |   |                  |   |             |  
|                                                                                                                               |  |              
|Stockholders Equity:                                                                                                          |  |               |             |   |                  |   |             |  
|Common stock, $.001 par value, 90,000,000 shares authorized and 16,069,345 and 15,663,585 issued and outstanding,
respectively |  |               | 16,069      |   |                  |   | 15,664      |  
|Additional paid-in capital                                                                                                     |  |               | 114,958,174 |   |                  |   | 114,402,234 |  
|Accumulated other comprehensive income                                                                                         |  |               | 95,199      |   |                  |   | 79,625      |  
|Accumulated deficit                                                                                                            |  |               | (99,034,639 | ) |                  |   | (97,761,593 | )
|                                                                                                                               |  |               |             |   |                  |   |             |  
|Total Stockholders Equity                                                                                                     |  |               | 16,034,803  |   |                  |   | 16,735,930  |  
|                                                                                                                               |  |               |             |   |                  |   |             |  
|Total Liabilities and Stockholders Equity                                                                                     |  | $             | 36,730,341  |   |                  | $ | 33,715,714  |  
|                                                                                                                               |  |               |             |   |                  |   |             |  

See accompanying notes to condensed consolidated financial statements.



3



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ATRICURE, INC. AND SUBSIDIARY

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)



|                                                      |  |                              |            |   |      |   |            |  
|----------------------------------------------------- |  | ---------------------------- | ---------- | - | ---- | - | ---------- | -
|                                                      |  | Three Months Ended March 31, |           
|                                                      |  | 2011                         |            |   | 2010 |  
|Revenue                                               |  | $                            | 15,637,081 |   |      | $ | 13,951,800 |  
|Cost of revenue                                       |  |                              | 3,744,277  |   |      |   | 3,272,636  |  
|                                                      |  |                              |            |   |      |   |            |  
|Gross profit                                          |  |                              | 11,892,804 |   |      |   | 10,679,164 |  
|                                                      |  |                             
|Operating expenses:                                   |  |                              |            |   |      |   |            |  
|Research and development expenses                     |  |                              | 2,944,347  |   |      |   | 2,657,928  |  
|Selling, general and administrative expenses          |  |                              | 10,022,652 |   |      |   | 9,711,522  |  
|                                                      |  |                              |            |   |      |   |            |  
|Total operating expenses                              |  |                              | 12,966,999 |   |      |   | 12,369,450 |  
|                                                      |  |                              |            |   |      |   |            |  
|Loss from operations                                  |  |                              | (1,074,195 | ) |      |   | (1,690,286 | )
|                                                      |  |                             
|Other income (expense):                               |  |                              |            |   |      |   |            |  
|Interest expense                                      |  |                              | (308,514   | ) |      |   | (263,013   | )
|Interest income                                       |  |                              | 4,250      |   |      |   | 6,654      |  
|Other                                                 |  |                              | 109,914    |   |      |   | (64,496    | )
|                                                      |  |                              |            |   |      |   |            |  
|                                                      |  |                             
|Loss before income tax (expense) benefit              |  |                              | (1,268,545 | ) |      |   | (2,011,141 | )
|Income tax (expense) benefit                          |  |                              | (4,501     | ) |      |   | 1,790      |  
|                                                      |  |                              |            |   |      |   |            |  
|                                                      |  |                             
|Net loss                                              |  | $                            | (1,273,046 | ) |      | $ | (2,009,351 | )
|                                                      |  |                              |            |   |      |   |            |  
|                                                      |  |                             
|Basic and diluted net loss per share                  |  | $                            | (0.08      | ) |      | $ | (0.13      | )
|                                                      |  |                              |            |   |      |   |            |  
|                                                      |  |                             
|Weighted average shares outstandingbasic and diluted |  |                              | 15,396,307 |   |      |   | 14,997,009 |  

See accompanying notes
to condensed consolidated financial statements.



4



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ATRICURE, INC. AND SUBSIDIARY

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW

(Unaudited)



|                                                                            |  |                              |            |   |      |   |            |  
|--------------------------------------------------------------------------- |  | ---------------------------- | ---------- | - | ---- | - | ---------- | -
|                                                                            |  | Three Months Ended March 31, |           
|                                                                            |  | 2011                         |            |   | 2010 |  
|Cash flows from operating activities:                                       |  |                              |            |   |      |   |            |  
|Net loss                                                                    |  | $                            | (1,273,046 | ) |      | $ | (2,009,351 | )
|Adjustments to reconcile net loss to net cash used in operating activities: |  |                              |            |   |      |   |            |  
|Share-based compensation expense                                            |  |                              | 803,407    |   |      |   | 812,035    |  
|Depreciation                                                                |  |                              | 512,871    |   |      |   | 560,338    |  
|Write-off of deferred financing costs and discount on long-term debt        |  |                              | 153,101    |   |      |   |           |  
|Loss on disposal of equipment                                               |  |                              | 44,450     |   |      |   |           |  
|Amortization of deferred financing costs                                    |  |                              | 26,151     |   |      |   | 25,168     |  
|Amortization of discount on long-term debt                                  |  |                              | 21,707     |   |      |   | 53,607     |  
|Amortization of intangible assets                                           |  |                              | 16,875     |   |      |   | 70,375     |  
|Change in allowance for doubtful accounts                                   |  |                              | 6,063      |   |      |   | (17,490    | )
|Changes in assets and liabilities:                                          |  |                              |            |   |      |   |            |  
|Accounts receivable                                                         |  |                              | 179,718    |   |      |   | (1,486,934 | )
|Inventories                                                                 |  |                              | (292,105   | ) |      |   | (622,077   | )
|Other current assets                                                        |  |                              | (76,899    | ) |      |   | (95,315    | )
|Accounts payable                                                            |  |                              | (69,300    | ) |      |   | 1,138,677  |  
|Accrued liabilities                                                         |  |                              | (938,856   | ) |      |   | (1,272,706 | )
|Other non-current assets and non-current liabilities                        |  |                              | 14,289     |   |      |   | (132,855   | )
|                                                                            |  |                              |            |   |      |   |            |  
|Net cash used in operating activities                                       |  |                              | (871,574   | ) |      |   | (2,976,528 | )
|                                                                            |  |                             
|Cash flows from investing activities:                                       |  |                              |            |   |      |   |            |  
|Purchases of property and equipment                                         |  |                              | (388,734   | ) |      |   | (397,076   | )
|Purchases of available-for-sale securities                                  |  |                              | (3,281,340 | ) |      |   | (3,373,381 | )
|Maturities of available-for-sale securities                                 |  |                              | 3,650,000  |   |      |   | 1,999,398  |  
|Net proceeds from the sale of equipment                                     |  |                              | 89,476     |   |      |   |           |  
|                                                                            |  |                              |            |   |      |   |            |  
|Net cash provided by (used in) investing activities                         |  |                              | 69,402     |   |      |   | (1,771,059 | )
|                                                                            |  |                             
|Cash flows from financing activities:                                       |  |                              |            |   |      |   |            |  
|Payments on debt and capital leases                                         |  |                              | (2,895,313 | ) |      |   | (556,383   | )
|Proceeds from borrowings of debt                                            |  |                              | 7,500,000  |   |      |   |           |  
|Payment of debt fees                                                        |  |                              | (25,719    | ) |      |   | (5,349     | )
|Proceeds from stock option exercises                                        |  |                              | 221,382    |   |      |   | 22,356     |  
|Shares repurchased for payment of taxes on stock awards                     |  |                              | (468,445   | ) |      |   |           |  
|                                                                            |  |                              |            |   |      |   |            |  
|Net cash provided by (used in) financing activities                         |  |                              | 4,331,905  |   |      |   | (539,376   | )
|                                                                            |  |                              |            |   |      |   |            |  
|                                                                            |  |                             
|Effect of exchange rate changes on cash and cash equivalents                |  |                              | (74,696    | ) |      |   | 37,043     |  
|                                                                            |  |                             
|Net increase (decrease) in cash and cash equivalents                        |  |                              | 3,455,037  |   |      |   | (5,249,920 | )
|                                                                            |  |                             
|Cash and cash equivalentsbeginning of period                               |  |                              | 4,230,709  |   |      |   | 8,905,425  |  
|                                                                            |  |                              |            |   |      |   |            |  
|                                                                            |  |                             
|Cash and cash equivalentsend of period                                     |  | $                            | 7,685,746  |   |      | $ | 3,655,505  |  
|                                                                            |  |                              |            |   |      |   |            |  
|                                                                            |  |                             
|Supplemental cash flow information:                                         |  |                              |            |   |      |   |            |  
|Cash paid for interest                                                      |  | $                            | 57,175     |   |      | $ | 124,820    |  
|Cash paid for taxes                                                         |  | $                            | 15,000     |   |      | $ | 21,639     |  
|Non-cash investing and financing activities:                                |  |                              |            |   |      |   |            |  
|Purchases of property and equipment in current liabilities                  |  | $                            | 25,575     |   |      | $ | 64,433     |  
|Assets acquired through capital lease                                       |  | $                            | 26,655     |   |      | $ |           |  

See accompanying notes
to condensed consolidated financial statements.



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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

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 in the United States and internationally. International sales were $3,514,538 and $2,901,626 during the three months ended March 31, 2011 and 2010, respectively.

Basis of PresentationThe accompanying interim financial statements have been prepared in accordance with the rules
and regulations of the Securities and Exchange Commission (SEC). The accompanying interim financial statements are unaudited, but in the opinion of the Companys management, contain all of the normal, recurring adjustments
considered necessary to present fairly the financial position, results of operations and cash flows for the periods presented in conformity with generally accepted accounting principles applicable to interim periods. Certain information and footnote
disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (GAAP) have been omitted or condensed. The Company believes the disclosures herein are
adequate to make the information presented not misleading. Results of operations are not necessarily indicative of the results expected for the full fiscal year or for any future period.

The accompanying Condensed Consolidated Financial Statements should be read in conjunction with the audited financial statements of the
Company included in the Companys Annual Report on Form 10-K for the year ended December 31, 2010 filed with the SEC.

Principles of ConsolidationThe Condensed 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 Condensed 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. The Companys surgical devices consist primarily of individual disposable handpieces and equipment generators. The
Companys 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. Typically, no installation, calibration or testing of this equipment is performed by the Company subsequent
to shipment to the customer in order to render it operational.



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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)



Product revenue includes shipping and handling revenue of $174,007 and $153,765 for the
three months ended March 31, 2011 and 2010, 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.

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 reductions given to customers. The Company estimates such provision quarterly based primarily on a
specific identification basis. Increases to the provision result in a reduction of revenue.

Allowance for Doubtful
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.



|                         |  |               |           |   |                  |   |           |  
|------------------------ |  | ------------- | --------- | - | ---------------- | - | --------- | -
|                         |  | March 31,2011 |           |   | December 31,2010 |  
|Raw materials            |  | $             | 2,798,903 |   |                  | $ | 2,583,030 |  
|Work in process          |  |               | 769,742   |   |                  |   | 698,462   |  
|Finished goods           |  |               | 2,498,375 |   |                  |   | 2,430,047 |  
|Reserve for obsolescence |  |               | (51,682   | ) |                  |   | (31,506   | )
|                         |  |               |           |   |                  |   |           |  
|Inventories, net         |  | $             | 6,015,338 |   |                  | $ | 5,680,033 |  
|                         |  |               |           |   |                  |   |           |  

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 $366,807 and $328,629 for the three months ended March 31, 2011 and 2010, respectively. As of March 31, 2011 and December 31, 2010, the net carrying amount of loaned equipment
included in net property and equipment in the Condensed Consolidated Balance Sheets was $1,510,949 and $1,630,163, respectively.

Impairment of Long-Lived AssetsThe Company reviews property and equipment and definite-lived intangibles for impairment using its best estimates based on reasonable and supportable
assumptions and projections in accordance with FASB ASC 360, Property, Plant and Equipment (ASC 360). The Company did not recognize any impairment of long-lived assets for the three months ended March 31, 2011 and 2010.



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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)



Intangible AssetsIntangible assets with determinable useful lives
are amortized on a straight-line basis over the estimated periods benefited, which range 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 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 3,260,880 and 3,549,218 options, restricted stock and performance based shares as of March 31, 2011 and 2010, 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 losses, the comprehensive loss includes foreign currency exchange rate adjustments and
unrealized gains and losses on investments. The comprehensive loss for the three months ended March 31, 2011 and 2010 was $1,257,472 and $2,100,240, respectively.

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



|                                         |  |                                                  |       |   |                                      |   |        |                                     |  |   |        | 
|---------------------------------------- |  | ------------------------------------------------ | ----- | - | ------------------------------------ | - | ------ | ----------------------------------- |  | - | ------ | 
|                                         |  | UnrealizedGains (Losses)on Short-TermInvestments |       |   | ForeignCurrencyTranslationAdjustment |   |        | AccumulatedOtherComprehensiveIncome | 
|Balance as of December 31, 2010          |  | $                                                | (321  | ) |                                      | $ | 79,946 |                                     |  | $ | 79,625 | 
|January 1, 2011 to March 31, 2011 change |  |                                                  | 2,332 |   |                                      |   | 13,242 |                                     |  |   | 15,574 | 
|                                         |  |                                                  |       |   |                                      |   |        |                                     |  |   |        | 
|Balance as of March 31, 2011             |  | $                                                | 2,011 |   |                                      | $ | 93,188 |                                     |  | $ | 95,199 | 
|                                         |  |                                                  |       |   |                                      |   |        |                                     |  |   |        | 

Foreign Currency Transaction Gains (Losses)The Company recorded foreign currency
transaction gains (losses) of $96,031 and ($64,207) for the three months ended March 31, 2011 and 2010, respectively, in connection with partial settlements of its intercompany balance with its subsidiary.

Research and DevelopmentResearch and development costs are expensed as incurred. These costs include compensation and
other internal and external costs associated with the development and research related to new products or concepts, preclinical studies, clinical trials and the cost of products used in trials and tests.

Share-Based CompensationThe Company follows FASB ASC 718 Compensation-Stock Compensation (ASC
718), to record share-based compensation for all share-based payment awards, including stock options, restricted stock, performance shares and employee 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 three months ended March 31, 2011 and 2010 was $803,407 and $812,035 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 Condensed 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.



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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)



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.

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 three months ended March 31, 2011 and 2010, $6,169 and $2,867, respectively, 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 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 three months ended March 31, 2011 and 2010, $6,271 and $290,
respectively, of expense was recorded as a result of the remeasurement of the fair value of these fully vested stock options. As of March 31, 2011 and December 31, 2010, respectively, fully vested options to acquire 37,103 and 41,049
shares of common stock held by non-employee consultants remained unexercised and a liability of $274,749 and $268,478 was included in accrued liabilities in the Condensed Consolidated Balance Sheets as of March 31, 2011 and December 31,
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 fair 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 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 has evaluated the provisions of ASC 985 and has determined that it does 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 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.



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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)



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 investments 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.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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 March 31, 2011:



|                                        |  |                                                             |           |  |                                             |   |           |                                               |  |   |         |  |  |   |            | 
|--------------------------------------- |  | ----------------------------------------------------------- | --------- |  | ------------------------------------------- | - | --------- | --------------------------------------------- |  | - | ------- |  |  | - | ---------- | 
|                                        |  | Quoted Prices inActive Markets forIdentical Assets(Level 1) |           |  | Significant OtherObservable Inputs(Level 2) |   |           | Significant OtherUnobservableInputs (Level 3) |  |   | Total   | 
|Assets:                                 |  |                                                             |           |  |                                             |   |           |                                               |  |   |         |  |  |   |            | 
|Money market funds                      |  | $                                                           |          |  |                                             | $ | 5,243,225 |                                               |  | $ |        |  |  | $ | 5,243,225  | 
|Commercial paper                        |  |                                                             |          |  |                                             |   | 3,697,703 |                                               |  |   |        |  |  |   | 3,697,703  | 
|U.S. government agencies and securities |  |                                                             | 4,875,880 |  |                                             |   |          |                                               |  |   |        |  |  |   | 4,875,880  | 
|                                        |  |                                                             |           |  |                                             |   |           |                                               |  |   |         |  |  |   |            | 
|Total assets                            |  | $                                                           | 4,875,880 |  |                                             | $ | 8,940,928 |                                               |  | $ |        |  |  | $ | 13,816,808 | 
|                                        |  |                                                             |           |  |                                             |   |           |                                               |  |   |         |  |  |   |            | 
|Liabilities:                            |  |                                                             |           |  |                                             |   |           |                                               |  |   |         |  |  |   |            | 
|Derivative instruments                  |  | $                                                           |          |  |                                             | $ |          |                                               |  | $ | 274,749 |  |  | $ | 274,749    | 
|                                        |  |                                                             |           |  |                                             |   |           |                                               |  |   |         |  |  |   |            | 
|Total liabilities                       |  | $                                                           |          |  |                                             | $ |          |                                               |  | $ | 274,749 |  |  | $ | 274,749    | 
|                                        |  |                                                             |           |  |                                             |   |           |                                               |  |   |         |  |  |   |            | 



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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)



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 inActive Markets forIdentical Assets(Level 1) |           |  | Significant OtherObservable Inputs(Level 2) |   |           | Significant OtherUnobservableInputs(Level 3) |  |   | Total   | 
|Assets:                                 |  |                                                             |           |  |                                             |   |           |                                              |  |   |         |  |  |   |            | 
|Money market funds                      |  | $                                                           |          |  |                                             | $ | 1,222,618 |                                              |  | $ |        |  |  | $ | 1,222,618  | 
|Commercial paper                        |  |                                                             |          |  |                                             |   | 2,399,038 |                                              |  |   |        |  |  |   | 2,399,038  | 
|U.S. government agencies and securities |  |                                                             | 5,836,594 |  |                                             |   |          |                                              |  |   |        |  |  |   | 5,836,594  | 
|Corporate bonds                         |  |                                                             | 704,207   |  |                                             |   |          |                                              |  |   |        |  |  |   | 704,207    | 
|                                        |  |                                                             |           |  |                                             |   |           |                                              |  |   |         |  |  |   |            | 
|Total assets                            |  | $                                                           | 6,540,801 |  |                                             | $ | 3,621,656 |                                              |  | $ |        |  |  | $ | 10,162,457 | 
|                                        |  |                                                             |           |  |                                             |   |           |                                              |  |   |         |  |  |   |            | 
|Liabilities:                            |  |                                                             |           |  |                                             |   |           |                                              |  |   |         |  |  |   |            | 
|Derivative instruments                  |  | $                                                           |          |  |                                             | $ |          |                                              |  | $ | 268,478 |  |  | $ | 268,478    | 
|                                        |  |                                                             |           |  |                                             |   |           |                                              |  |   |         |  |  |   |            | 
|Total liabilities                       |  | $                                                           |          |  |                                             | $ |          |                                              |  | $ | 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 March 31, 2011 |  | As of December 31, 2010
|Risk free interest rate         |  | 0.66% - 1.77%        |  | 0.12% - 1.86%          
|Expected life of option (years) |  | 1.73 - 4.02          |  | 0.16 - 4.71            
|Expected volatility of stock    |  | 71.00%               |  | 65.00%                 
|Dividend yield                  |  | 0.00%                |  | 0.00%                  

The Company has
historically issued stock options to non-employee consultants as a form of compensation for services provided to the Company. Once these non-employee options have vested, 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, thus, accounted for as derivative liabilities 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, before December 31, 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 is based solely on the Companys trading history. In accordance with ASC 820, the following table represents the companys Level 3 fair value measurements using significant
other unobservable inputs for derivative instruments as of March 31, 2011:



|                                                                                                                                                 |  |   |         |  
|------------------------------------------------------------------------------------------------------------------------------------------------ |  | - | ------- | -
|Beginning Balance                                                                                                                                |  | $ | 268,478 |  
|Total losses (realized/unrealized) included in earnings                                                                                          |  |   | 6,271   |  
|Purchases                                                                                                                                        |  |   |        |  
|Issuances                                                                                                                                        |  |   |        |  
|Settlements                                                                                                                                      |  |   |        |  
|                                                                                                                                                 |  |   |         |  
|Ending Balance                                                                                                                                   |  | $ | 274,749 |  
|                                                                                                                                                 |  |   |         |  
|Losses included in earnings (or changes in net assets attributable to the change in unrealized losses relating to assets held at
reporting date) |  | $ | (6,271  | )
|                                                                                                                                                 |  |   |         |  



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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)



In accordance with ASC 820, the following table represents the companys Level 3
fair value measurements using significant other unobservable inputs for derivative instruments as of December 31, 2010:



|                                                                                                                                                 |  |   |          |  
|------------------------------------------------------------------------------------------------------------------------------------------------ |  | - | -------- | -
|Beginning Balance                                                                                                                                |  | $ | 180,288  |  
|Total losses (realized/unrealized) included in earnings                                                                                          |  |   | 164,959  |  
|Purchases, issuances and settlements                                                                                                             |  |   | (76,769  | )
|                                                                                                                                                 |  |   |          |  
|Ending Balance                                                                                                                                   |  | $ | 268,478  |  
|                                                                                                                                                 |  |   |          |  
|Losses included in earnings (or changes in net assets attributable to the change in unrealized losses relating to assets held at
reporting date) |  | $ | (164,959 | )
|                                                                                                                                                 |  |   |          |  

4. INTANGIBLE ASSETS

Intangible assets with definite lives are amortized over their estimated useful lives. The following table provides a summary of the Companys intangible assets with definite lives:



|                                            |  |                                    |          |   |                      |   |         |            |  |   |         |   |  |   |          |  
|------------------------------------------- |  | ---------------------------------- | -------- | - | -------------------- | - | ------- | ---------- |  | - | ------- | - |  | - | -------- | -
|                                            |  | ProprietaryManufacturingTechnology |          |   | Non-CompeteAgreement |   |         | Trade Name |  |   | Total   |  
|Net carrying amount as of December 31, 2009 |  | $                                  | 130,778  |   |                      | $ | 69,792  |            |  | $ | 87,083  |   |  | $ | 287,653  |  
|Amortization                                |  |                                    | (130,778 | ) |                      |   | (12,500 | )          |  |   | (55,000 | ) |  |   | (198,278 | )
|                                            |  |                                    |          |   |                      |   |         |            |  |   |         |   |  |   |          |  
|Net carrying amount as of December 31, 2010 |  |                                    |         |   |                      |   | 57,292  |            |  |   | 32,083  |   |  |   | 89,375   |  
|Amortization                                |  |                                    |         |   |                      |   | (3,125  | )          |  |   | (13,750 | ) |  |   | (16,875  | )
|                                            |  |                                    |          |   |                      |   |         |            |  |   |         |   |  |   |          |  
|Net carrying amount as of March 31, 2011    |  | $                                  |         |   |                      | $ | 54,167  |            |  | $ | 18,333  |   |  | $ | 72,500   |  
|                                            |  |                                    |          |   |                      |   |         |            |  |   |         |   |  |   |          |  

Amortizable intangible assets are being amortized over eight years for a non-compete arrangement, four years
for trade name usage and five years for proprietary manufacturing technology. Amortization expense related to intangible assets with definite lives was $16,875 and $70,375 for the three months ended March 31, 2011 and 2010, respectively.

Estimated future amortization expense related to intangible assets with definite lives is as follows:



|      |  |              |        |  |  |                                        
|----- |  | ------------ | ------ |  |  | ---------------------------------------
|Year  |  | Amortization |        |  | 
|2011  |  | $            | 27,708 |  |  | April 1, 2011 through December 31, 2011
|2012  |  |              | 12,500 |  |  |                                        
|2013  |  |              | 12,500 |  |  |                                        
|2014  |  |              | 12,500 |  |  |                                        
|2015  |  |              | 7,292  |  |  |                                        
|      |  |              |        |  |  |                                        
|Total |  | $            | 72,500 |  |  |                                        
|      |  |              |        |  |  |                                        

5. ACCRUED LIABILITIES

Accrued liabilities consisted of the following:



|                                                 |  |               |           |  |                  |   |           | 
|------------------------------------------------ |  | ------------- | --------- |  | ---------------- | - | --------- | 
|                                                 |  | March 31,2011 |           |  | December 31,2010 |  
|Accrued class action settlement reserve          |  | $             | 2,000,000 |  |                  | $ | 2,000,000 | 
|Accrued commissions                              |  |               | 924,692   |  |                  |   | 1,178,854 | 
|Other accrued liabilities                        |  |               | 742,552   |  |                  |   | 808,876   | 
|Accrued taxes                                    |  |               | 552,264   |  |                  |   | 435,495   | 
|Accrued DOJ settlement reserve (current portion) |  |               | 527,966   |  |                  |   | 486,975   | 
|Accrued bonus                                    |  |               | 285,526   |  |                  |   | 894,492   | 
|Accrued non-employee stock options               |  |               | 274,749   |  |                  |   | 268,478   | 
|Accrued vacation                                 |  |               | 250,148   |  |                  |   | 257,235   | 
|                                                 |  |               |           |  |                  |   |           | 
|Total                                            |  | $             | 5,557,897 |  |                  | $ | 6,330,405 | 
|                                                 |  |               |           |  |                  |   |           | 



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ATRICURE, INC. AND SUBSIDIARY

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)



6. INDEBTEDNESS

On May 1, 2009, the Company and Silicon Valley Bank (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. Upon issuance of the term
loan and the Warrant, the Company allocated the related proceeds between these two financial instruments based on their relative fair values in accordance with FASB ASC 470, Debt. Proceeds of $455,000 were allocated to the Warrant and
recorded as additional paid-in-capital, and the remaining proceeds of $6,045,003 were recorded as the initial net carrying value of the debt. 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.

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. This amendment increased the Companys credit facility from $10,000,000 to
approximately $14,000,000 . The amendment 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 portion accrued at a rate of
10.0% per year, and interest on the revolving loan would accrue 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 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 Loan Modification Agreement) and an Export-Import Bank First Loan Modification Agreement (the Ex-Im Agreement and, collectively with the Loan Modification Agreement, the Modification
Agreements) which set forth certain amendments to the Companys credit facility with SVB. The 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 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 0.75% above the prime rate. The maximum borrowing amount under
the revolving facility remained at $10,000,000.

The Agreement, as amended, 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 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
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 Agreement and related agreements including the Guaranty and Security Agreement. As of March 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 March 31, 2011, the Company had no borrowings under the
revolving credit facility and had borrowing availability of approximately $7.7 million. Also, as of March 31, 2011, $7,500,000 was outstanding under the term loan, which included $1,500,000 classified as current maturities of long-term debt.



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(Unaudited)



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. Amortization expense for the three months ended March 31, 2011 was $100,580, which included $78,873 of accelerated amortization expense due to the
credit facility modification in March 2011.

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.

The effective interest rate on borrowings under the modified term loan, including debt issuance costs, is 7.9%. As of March 31, 2011, the Company had an outstanding letter of credit of $250,000
issued to its corporate credit card program provider which expires on July 31, 2011.

As of March 31, 2011 the
Company had capital leases for computer and office equipment that expire at various terms through 2015, and the cost of the assets under lease was $234,503. These assets are depreciated over the estimated useful lives of the assets, which equal the
term of the lease. Accumulated amortization on the capital leases was $143,252 at March 31, 2011.

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



|                                   |  |   |           |  |  |                                        
|---------------------------------- |  | - | --------- |  |  | ---------------------------------------
|2011                               |  | $ | 1,149,488 |  |  | April 1, 2011 through December 31, 2011
|2012                               |  |   | 1,535,630 |  |  |                                        
|2013                               |  |   | 1,517,288 |  |  |                                        
|2014                               |  |   | 1,507,501 |  |  |                                        
|2015                               |  |   | 1,501,995 |  |  |                                        
|2016                               |  |   | 375,000   |  |  |                                        
|                                   |  |   |           |  |  |                                        
|Total maturities on long-term debt |  | $ | 7,586,902 |  |  |                                        
|                                   |  |   |           |  |  |                                        

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.

7. 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.

Royalty Agreements

The Company has certain royalty agreements in place with terms that include 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 $127,650 and $52,204 was recorded as part of cost of revenue for the three months ended March 31, 2011 and 2010, 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 21 units were purchased by the Company between December 1, 2010 and March 31, 2011, and 19 units remain to be purchased by
December 31, 2011 in order to retain exclusive distribution rights through December 31, 2012. Units purchased in excess of yearly minimums in a year reduce future minimum purchase requirements.



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Life Support Technology, LST b.v.

In September of 2007, multiple proceedings between the Company and Life Support Technology, LST b.v., or LST., a former distributor of
AtriCure products in Europe, were settled. The settlement agreement provided for the Company to pay LST 257,360 (euros) in 16 payments of 16,085, with the final payment made in January 2011.

Distributor Termination

On July 2, 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 $256,000),
repurchased saleable disposable product inventory for 107,196 (approximately $137,000), and paid 75,000 (approximately $96,000) 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 $70,000) per quarter for a total of 400,000
(approximately $560,000). Additionally, the distributor earned 10,000 (approximately $14,000) per month for consulting services during the third quarter of 2010.

Legal

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 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 our 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 for $2,000,000, which is subject to notice to the class as well as approval by the court for which a
hearing is scheduled to occur on May 27, 2011. The Company expects to recover all of the $2,000,000 loss through an insurance claim and has recorded a $2,000,000 asset within current assets which represents the amount considered probable of
recovery from the insurance claim.

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 Sections 10(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 the DOJ 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 atrial fibrillation (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, 2010, 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).



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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 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 March 31, 2011, the Company had made $812,500 in payments (including interest), and has a liability related to this settlement totaling $2,781,549, of which
$527,964 is 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 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
TamComplaint

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.

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

8. INCOME TAX PROVISION

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
Companys provision for income taxes for continuing operations in interim periods is computed by applying its estimated annual effective rate against its loss before income tax (expense) benefit for the period. In addition, non-recurring or
discrete items are recorded during the period in which they occur. The effective tax rate for the three months ended March 31, 2011 and 2010 was (0.35%) and 0.09%, respectively.

The Company currently has not had to accrue interest and penalties related to unrecognized income 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 Condensed Consolidated Statements of Operations and within the related tax liability in the Condensed Consolidated
Balance Sheets.

9. 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).

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.

Options granted under the 2001 Plan and the 2005 Plan generally expire ten 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 over four years 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.



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As of March 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
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 March 31, 2011 there were 1,042,497 shares available for future grants under the plans.

Activity under the Plans during the three months ended March 31, 2011 was as follows:



|                               |  |                            |           |   |                              |   |       |                                         |  |  |                         |  |  |   |           | 
|------------------------------ |  | -------------------------- | --------- | - | ---------------------------- | - | ----- | --------------------------------------- |  |  | ----------------------- |  |  | - | --------- | 
|Stock Options                  |  | Number ofSharesOutstanding |           |   | WeightedAverageExercisePrice |   |       | WeightedAverageRemainingContractualTerm |  |  | AggregateIntrinsicValue | 
|Outstanding at January 1, 2011 |  |                            | 2,787,354 |   |                              | $ | 7.82  |                                         |  |  |                         |  |  |   |           | 
|Granted                        |  |                            | 152,000   |   |                              | $ | 11.20 |                                         |  |  |                         |  |  |   |           | 
|Cancelled or forfeited         |  |                            | (6,181    | ) |                              | $ | 3.18  |                                         |  |  |                         |  |  |   |           | 
|Exercised                      |  |                            | (181,791  | ) |                              | $ | 1.22  |                                         |  |  |                         |  |  |   |           | 
|                               |  |                            |           |   |                              |   |       |                                         |  |  |                         |  |  |   |           | 
|Outstanding at March 31, 2011  |  |                            | 2,751,382 |   |                              | $ | 8.46  |                                         |  |  | 6.24                    |  |  | $ | 8,939,616 | 
|                               |  |                            |           |   |                              |   |       |                                         |  |  |                         |  |  |   |           | 
|Vested and expected to vest    |  |                            | 2,719,615 |   |                              | $ | 8.46  |                                         |  |  | 6.20                    |  |  | $ | 8,827,601 | 
|                               |  |                            |           |   |                              |   |       |                                         |  |  |                         |  |  |   |           | 
|Exercisable at March 31, 2011  |  |                            | 1,987,781 |   |                              | $ | 8.84  |                                         |  |  | 5.32                    |  |  | $ | 5,907,331 | 
|                               |  |                            |           |   |                              |   |       |                                         |  |  |                         |  |  |   |           | 



|                               |  |                            |         |   |                                     |   |       | 
|------------------------------ |  | -------------------------- | ------- | - | ----------------------------------- | - | ----- | 
|Restricted Stock               |  | Number ofSharesOutstanding |         |   | WeightedAverageGrant DateFair Value |  
|Outstanding at January 1, 2011 |  |                            | 371,700 |   |                                     | $ | 4.39  | 
|Granted                        |  |                            | 156,000 |   |                                     | $ | 11.20 | 
|Forfeited                      |  |                            | (1,400  | ) |                                     | $ | 2.58  | 
|Released                       |  |                            | (26,802 | ) |                                     | $ | 5.24  | 
|                               |  |                            |         |   |                                     |   |       | 
|Outstanding at March 31, 2011  |  |                            | 499,498 |   |                                     | $ | 6.48  | 
|                               |  |                            |         |   |                                     |   |       | 

The total intrinsic value of options exercised during the three months ended March 31, 2011 and 2010
was $1,589,942 and $27,221, respectively. As a result of the Companys tax position, no tax benefit was recognized related to the stock option exercises. For the three months ended March 31, 2011 and 2010, respectively, $221,382 and
$22,356 in cash proceeds was included in the Companys Condensed Consolidated Statements of Cash Flows as a result of the exercise of stock options. The total fair value of performance shares vested during the three months ended March 31,
2011 and 2010 was $1,243,200 and $0, respectively. The total fair value of restricted stock vested during the three months ended March 31, 2011 and 2010 was $304,783 and $37,584, 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 the three months ended March 31, 2011 and 2010 of $721,357 and $677,867, respectively. As of March 31, 2011 there was $5,989,261 of unrecognized compensation costs
related to non-vested stock option and restricted stock arrangements ($3,073,827 relating to stock options and $2,915,434 relating to restricted stock). This cost is expected to be recognized over a weighted average period of 2.5 years for stock
options and 1.8 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 related to
participants achievement of certain specified metrics. As of March 31, 2011 the



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Company has the potential to issue 10,000 shares of common stock based upon the participant 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 the three months ended March 31, 2011 and 2010, the Company recognized expense related to performance shares of $0 and $90,764, respectively. As of
March 31, 2011, there was no unrecognized compensation cost related to non-vested share-based compensation arrangements associated with these 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 March 31, 2011, there were 936,852 shares available for
future issuance under the ESPP, including 313,272 additional 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 $75,880 and $40,537 for
the three months ended March 31, 2011 and 2010, 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 the three months ended March 31, 2011 and 2010. This expense was allocated as follows:



|                                                            |  |                              |         |  |      |   |         | 
|----------------------------------------------------------- |  | ---------------------------- | ------- |  | ---- | - | ------- | 
|                                                            |  | Three Months Ended March 31, |        
|                                                            |  | 2011                         |         |  | 2010 |  
|Cost of revenue                                             |  | $                            | 40,207  |  |      | $ | 40,111  | 
|Research and development expenses                           |  |                              | 126,330 |  |      |   | 102,142 | 
|Selling, general and administrative expenses                |  |                              | 630,700 |  |      |   | 666,915 | 
|                                                            |  |                              |         |  |      |   |         | 
|Total share-based compensation expense related to employees |  | $                            | 797,237 |  |      | $ | 809,168 | 
|                                                            |  |                              |         |  |      |   |         | 

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:



|                                |  |                              |       |   |      |  |       |  
|------------------------------- |  | ---------------------------- | ----- | - | ---- |  | ----- | -
|                                |  | Three Months Ended March 31, |      
|                                |  | 2011                         |       |   | 2010 | 
|Risk free interest rate         |  |                              | 2.78  | % |      |  | 2.88  | %
|Expected life of option (years) |  |                              | 6.25  |   |      |  | 6.25  |  
|Expected volatility of stock    |  |                              | 72.00 | % |      |  | 69.00 | %
|Weighted-average volatility     |  |                              | 72.00 | % |      |  | 69.00 | %
|Dividend yield                  |  |                              | 0.00  | % |      |  | 0.00  | %

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 fair value of restricted stock awards is based on the market value of the Companys stock on the date of the
awards.



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Based on the assumptions noted above, the weighted average estimated fair value per
share of the stock options and restricted stock granted for the respective periods was as follows:



|                 |  |                              |       |  |      |   |      | 
|---------------- |  | ---------------------------- | ----- |  | ---- | - | ---- | 
|                 |  | Three Months Ended March 31, |      
|                 |  | 2011                         |       |  | 2010 |  
|Stock options    |  | $                            | 7.42  |  |      | $ | 3.61 | 
|Restricted stock |  | $                            | 11.20 |  |      | $ | 5.60 | 

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 the three months ended March 31, 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 $6,169 and $2,867, for the three months ended March 31, 2011 and 2010, respectively.

Once these non-employee stock options have 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 (Derivatives and Hedging) 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 the three months ended March 31, 2011 and 2010, $6,271 and $290, respectively, of expense was recorded as a result of the remeasurement
of the fair value of these stock options. As of March 31, 2011 and December 31, 2010, respectively, fully vested stock options to acquire 37,103 and 41,049 shares of common stock held by non-employee consultants remained unexercised and a
liability of $274,749 and $268,478 was included in accrued liabilities in the Condensed Consolidated Balance Sheets as of March 31, 2011 and December 31, 2010, respectively.

10. 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 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 operating segment.

Geographic revenue was as follows:



|              |  |                              |            |  |      |   |            | 
|------------- |  | ---------------------------- | ---------- |  | ---- | - | ---------- | 
|              |  | Three Months Ended March 31, |           
|              |  | 2011                         |            |  | 2010 |  
|United States |  | $                            | 12,122,543 |  |      | $ | 11,050,174 | 
|International |  |                              | 3,514,538  |  |      |   | 2,901,626  | 
|              |  |                              |            |  |      |   |            | 
|Total         |  | $                            | 15,637,081 |  |      | $ | 13,951,800 | 
|              |  |                              |            |  |      |   |            | 

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



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|Item 2. | 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 Condensed Consolidated Financial Statements and notes thereto contained in Item 1 of Part I of this Form 10-Q and our audited financial statements and notes thereto as of and for the year ended December 31, 2010 included in
our Form 10-K filed with the Securities and Exchange Commission (SEC) to provide an understanding of our results of operations, financial condition and cash flows.

Forward-Looking Statements

This Form 10-Q, 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 quarterly report on Form 10-Q, and in our annual report on Form 10-K for the year ended December 31, 2010. Forward-looking statements convey our current expectations or forecasts of future events. All statements contained in
this Form 10-Q 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-Q. 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.

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 and systems designed to exclude the left atrial appendage. We have two 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 our Isolator® Synergy bipolar
ablation clamp system, or Isolator 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 Isolator and cryoablation systems to treat atrial
fibrillation, or AF, in an estimated 100,000 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 cardiac
surgical procedures and also during sole-therapy minimally invasive cardiac ablation procedures. During a concomitant open procedure, the surgeon ablates cardiac tissue and/or treats 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 standard treatment alternative for AF patients who may be candidates for sole-therapy minimally invasive surgical procedures.
To date, none of our products have been approved or cleared by the Food and Drug Administration, or FDA, for the treatment of AF or the reduction in stroke. However, we are conducting clinical trials to investigate the safety and effectiveness of
our products for the treatment of AF. 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.

Recent Developments

During the third quarter of 2010 our DEEP AF clinical trial was approved by the FDA. DEEP AF is 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. The 30-patient trial will be conducted at six U.S. medical
centers. Enrollment in the trial was initiated in December 2010 and is anticipated to be completed during the third quarter of 2011. There are currently 11 patients enrolled in the trial. During the first quarter of 2011, the trial was modified to
include the use of the AtriClip system to exclude the left atrial appendage.

In December 2010, we submitted our final
clinical module to the FDA, including the supplementary data, in support of a PMA approval. During February 2011 we were notified by the FDA that our PMA achieved fileable status and received expedited review status. In March 2011, we received a
major deficiency letter related to the ABLATE PMA which highlights items on which the FDA requests clarification. We plan to work interactively with the agency to respond to these questions. Additionally, the FDA began its PMA manufacturing review,
which resulted in the issuance of a Form FDA 483, Inspectional Observations, which outlined deficiencies observed by the FDA inspectors. An approval of the ABLATE PMA would allow us to market our Isolator system for the treatment of patients with
permanent AF during open-heart procedures.



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During April 2011 we received clearance from the FDA for our Isolator
Synergy Access device for the ablation of cardiac tissue. We plan to initiate a commercial release of Isolator
Synergy Access during the second quarter of 2011.

Results of Operations

Three months ended March 31, 2011 compared to three months ended March 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:



|                                             |  |                              |        |   |              |  |       |        |  |   |              |   |  |  |       |   
|-------------------------------------------- |  | ---------------------------- | ------ | - | ------------ |  | ----- | ------ |  | - | ------------ | - |  |  | ----- | --
|                                             |  | Three Months Ended March 31, |       
|                                             |  | 2011                         |        |   | 2010         | 
|                                             |  | Amount                       |        |   | % ofRevenues |  |       | Amount |  |   | % ofRevenues |  
|                                             |  | (dollars in thousands)       |       
|Revenue                                      |  | $                            | 15,637 |   |              |  | 100.0 | %      |  | $ | 13,952       |   |  |  | 100.0 | % 
|Cost of revenue                              |  |                              | 3,744  |   |              |  | 23.9  | %      |  |   | 3,273        |   |  |  | 23.5  | % 
|                                             |  |                              |        |   |              |  |       |        |  |   |              |   |  |  |       |   
|Gross profit                                 |  |                              | 11,893 |   |              |  | 76.1  | %      |  |   | 10,679       |   |  |  | 76.5  | % 
|Operating expenses:                          |  |                              |        |   |              |  |       |        |  |   |              |   |  |  |       |   
|Research and development expenses            |  |                              | 2,944  |   |              |  | 18.8  | %      |  |   | 2,658        |   |  |  | 19.1  | % 
|Selling, general and administrative expenses |  |                              | 10,023 |   |              |  | 64.1  | %      |  |   | 9,711        |   |  |  | 69.6  | % 
|                                             |  |                              |        |   |              |  |       |        |  |   |              |   |  |  |       |   
|Total operating expenses                     |  |                              | 12,967 |   |              |  | 82.9  | %      |  |   | 12,369       |   |  |  | 88.7  | % 
|                                             |  |                              |        |   |              |  |       |        |  |   |              |   |  |  |       |   
|Loss from operations                         |  |                              | (1,074 | ) |              |  | (6.9  | %)     |  |   | (1,690       | ) |  |  | (12.1 | %)
|Other income (expense):                      |  |                              |        |   |              |  |       |        |  |   |              |   |  |  |       |   
|Interest expense                             |  |                              | (308   | ) |              |  | (2.0  | %)     |  |   | (263         | ) |  |  | (1.9  | %)
|Interest income                              |  |                              | 4      |   |              |  | 0.0   | %      |  |   | 7            |   |  |  | 0.0   | % 
|Other                                        |  |                              | 110    |   |              |  | 0.7   | %      |  |   | (65          | ) |  |  | (0.5  | %)
|                                             |  |                              |        |   |              |  |       |        |  |   |              |   |  |  |       |   
|Total other expense                          |  |                              | (194   | ) |              |  | (1.2  | %)     |  |   | (321         | ) |  |  | (2.3  | %)
|Loss before income tax (expense) benefit     |  |                              | (1,268 | ) |              |  | (8.1  | %)     |  |   | (2,011       | ) |  |  | (14.4 | %)
|Income tax (expense) benefit                 |  |                              | (5     | ) |              |  | (0.0  | %)     |  |   | 2            |   |  |  | (0.0  | %)
|                                             |  |                              |        |   |              |  |       |        |  |   |              |   |  |  |       |   
|Net loss                                     |  | $                            | (1,273 | ) |              |  | (8.1  | %)     |  | $ | (2,009       | ) |  |  | (14.4 | %)
|                                             |  |                              |        |   |              |  |       |        |  |   |              |   |  |  |       |   

Revenue.Total revenue increased 12.1%, from $14.0 million for the three months ended March 31, 2010 to $15.6
million for the three months ended March 31, 2011. Revenue from sales to customers in the United States increased $1.1 million, or 9.7%, and revenue from sales to international customers increased $0.6 million, or 21.1%. The increase in sales
to customers in the United States was primarily due to increased sales of the AtriClip system of $1.5 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 due primarily to a reduction in minimally invasive standalone cardiac ablation procedures. The increase in international revenue was primarily due to an increase in sales to customers in
our European and Asian markets due to new products (cryoablation products and the AtriClip system) and an increase in average selling price resulting from transitioning to a direct market in the Benelux region and increased unit sales in our other
direct markets. Foreign currency exchange rate fluctuations did not have an impact on the reported revenue increases.

Cost of revenue and
gross margin.Cost of revenue increased $0.5 million, from $3.3 million for the three months ended March 31, 2010 to $3.7 million for the three months ended March 31, 2011. The increase in cost of revenue was primarily due to an
increase in revenue. As a percentage of revenue, cost of revenue increased from 23.5% for the three months ended March 31, 2010 to 23.9% for the three months ended March 31, 2011. Gross margin for the three months ended March 31, 2011
and 2010 was 76.1% and 76.5%, respectively. The decrease in gross margin was primarily due to an increased mix of revenue from the AtriClip system, which has a lower gross margin than our other disposable products.

Research and development expenses.Research and development expenses increased $0.3 million, from $2.7 million for the three months ended
March 31, 2010 to $2.9 million for the three months ended March 31, 2011. As a percentage of revenue, research and development expenses decreased from 19.1% for the three months ended March 31, 2010 to 18.8% for the three months ended
March 31, 2011. The increase in expense was primarily due to a $0.2 million increase in clinical trial related expenditures associated with patient enrollment in DEEP AF and the ABLATE AF Registry.

Selling, general and administrative expenses. Selling, general and administrative expenses increased $0.3 million or 3.2%, from $9.7 million for
the three months ended March 31, 2010 to $10.0 million for the three months ended March 31, 2011. The increase was primarily attributable to a $0.6 million increase in headcount-related and travel expenses driven by an increase in average
worldwide sales and marketing headcount of 10 sales and marketing personnel in support of our growth initiatives. This increase was partially offset by a reduction in marketing and professional education activities of $0.4 million.



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Net interest expense. Net interest expense was $0.3 million for the three months ended
March 31, 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. Interest expense for the three months ended March 31, 2011 includes $0.2 million in expense related to the write-off of deferred financing costs and discount on long-term debt.

Other income (expense).Other income (expense) consists primarily of foreign currency transaction gains/losses, grant income, and non-employee
option expense/income related to the fair market value change for fully vested options outstanding for consultants, which are accounted for as free-standing derivatives. Other income (expense) for the three months ended March 31, 2011 and 2010
totaled $109,913 and $(64,496), respectively. For the three months ended March 31, 2011 and 2010, foreign currency transaction gains (losses) were $96,031 and ($64,207), respectively. Grant income for the three months ended March 31, 2011
was $20,153. Other income (expense) for the three months ended March 31, 2011 and 2010 included expense of $6,271 and $289, respectively, associated with an increase in value of certain non-employee stock options.

Liquidity and Capital Resources

As of March 31, 2011, we had cash, cash equivalents and short-term investments of $15.7 million and short-term and long-term debt of $7.6 million, resulting in a net cash position of $8.1 million. We
had unused borrowing capacity of approximately $7.7 million under our revolving credit facility. We had net working capital of $22.4 million and an accumulated deficit of $99.0 million as of March 31, 2011.

Cash flows used in operating activities.Net cash used in operating activities for the three months ended March 31, 2011 was $0.9 million.
The primary uses of cash were as follows:



| |  |  | The net loss of $1.3 million, offset by $1.6 million of non-cash expenses, including $0.8 million in share-based compensation, $0.5 million in
depreciation 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 $1.2 million, due primarily to the following:
| | - |  | -------------------------------------------------------------------------------------------------------------------------



| |  |  | a decrease in accounts receivable of $0.2 million, due primarily to a decrease in sales during the first quarter of 2011 as compared to the fourth
quarter of 2010;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | an increase in inventory of $0.3 million due primarily to a build-up of inventory levels in support of new products and anticipated revenue growth; and
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | a decrease in accrued and other liabilities of $1.0 million, primarily due to employee incentive payments related to 2010 performance.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------

Cash flows provided by investing activities.Net cash provided by investing activities was $0.1 million for the
three months ended March 31, 2011. The primary investing cash activities were as follows:



| |  |  | A use of cash of $0.4 million related to the purchase of equipment, which consisted primarily of loans of our generators (i.e. our ablation and sensing
unit) to our customers, offset by net proceeds from the sale of equipment of $0.1 million; and
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Net investment maturities of $0.4 million.
| | - |  | ------------------------------------------

Cash flows provided by financing activities. For the three months ended March 31, 2011, net cash provided by financing activities was $4.3 million, which was primarily due to net proceeds from
the modified SVB term loan borrowing of $5.0 million and proceeds from stock option exercises of $0.2 million, partially offset by shares repurchased for payment of taxes on stock awards of $0.5 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 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.



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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. This amendment increased our credit facility from $10.0 million to approximately $14.0 million. The amendment 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 portion accrued at a rate of 10.0% per year, and interest on the revolving loan would accrue 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 amortized over 36 months of equal
principal payments of approximately $181,000, plus applicable interest. The 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 Loan Modification Agreement) and an Export-Import Bank First
Loan Modification Agreement (the Ex-Im Agreement and, collectively with the Loan Modification Agreement, the Modification Agreements) which set forth certain amendments to our credit facility with SVB. The 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 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 0.75% above the prime rate. The maximum borrowing amount under the revolving facility remained at $10.0 million.

The Agreement, as amended, 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 Agreement, an obligation to repay all obligations in full, and a right by SVB to exercise all remedies available to it under the Agreement and related agreements
including the Guaranty and Security Agreement. As of March 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 March 31, 2011, we had no
borrowings under the revolving credit facility and had borrowing availability of approximately $7.7 million. Also, as of March 31, 2011, $7.5 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. Amortization expense for the three months ended March 31, 2011 was $100,580, which included $78,873 of accelerated amortization expense due to the credit facility modification in
March 2011.

The effective interest rate on borrowings under the modified term loan, including debt issuance costs, is 7.9%. As of
March 31, 2011, we had an outstanding letter of credit of $250,000 issued to our corporate credit card program provider which expires on July 31, 2011.

Uses of liquidity and capital resources. Our future capital requirements depend on a number of factors, including possible acquisitions and joint ventures, the rate of market acceptance of our
current and future 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, and costs associated with prosecuting, defending and enforcing our intellectual property rights. Global economic turmoil may
adversely impact our revenue, access to the capital markets or future demand for our products.

We 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 revolving credit facility, will be sufficient to meet our anticipated cash needs for working capital and



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capital expenditures for at least the next twelve months. Significant cash needs over the next twelve months include debt service of approximately $1.2 million ($125,000 per month plus interest)
on our outstanding term loan, payments under our settlement agreement with the DOJ and Relator of $0.6 million, and payments under the distributor termination and consulting agreement of approximately $0.3 million. If our 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, clinical activities and selling and
marketing efforts.

Off-Balance-Sheet Arrangements

As of March 31, 2011, we had operating lease agreements not recorded on the Condensed Consolidated Balance Sheet. Operating leases are utilized in the normal course of business.

Seasonality

During the first quarter,
we have historically experienced an increase in our operating expenses and operating loss due to higher selling, general and administrative expenses related primarily to our participation in and attendance at large industry events. During the third
quarter, we typically experience a decline in revenue that we attribute primarily to the elective nature of the procedures in which our products are used, which we believe arises from fewer people choosing to undergo elective procedures during the
summer months.

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 (GAAP). 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 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. Our Annual Report on Form 10-K for the fiscal
year ended December 31, 2010 includes additional information about the Company, our operations, our financial position, our critical accounting policies and accounting estimates and should be read in conjunction with this Quarterly Report.

Recent Accounting Pronouncements

See Note 2 in the Notes to the Condensed Consolidated Financial Statements for a discussion of recent accounting pronouncements.



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

As of March 31, 2011, there were no material changes to the information provided under Item 7A-Quantitative and Qualitative Disclosures About Market Risk in the Companys Form 10-K for the
year ended December 31, 2010.



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

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.



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##### Table of Contents

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during the three months ended March 31, 2011
that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II. OTHER INFORMATION



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

Information with
respect to legal proceedings can be found under the heading Legal in Note 7, Commitments and Contingencies to the Condensed Consolidated Financial Statements in Part I, Item 1 of this Quarterly Report on Form 10-Q, and
is incorporated herein by reference.



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

In addition to the other
information set forth in this report, careful consideration should be given to the factors discussed in Part I, Item 1A. Risk Factors in our Form 10-K for the year ended December 31, 2010, all of which could materially affect our
business, financial condition or future results. The risks described are not the only risks facing us. Additional risks and uncertainties not currently known to us, or that we currently deem to be immaterial, also may adversely affect our business,
financial condition and/or operating results. There have been no material changes with respect to the risk factors disclosed in our Annual Report on Form 10-K for the year ended December 31, 2010.



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##### Table of Contents

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



|            |  |                                                                                                                                                       
|----------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit
No. |  | Description                                                                                                                                           
|            | 
|31.1        |  | Rule 13a-14(a) Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                     
|            | 
|31.2        |  | Rule 13a-14(a) Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                     
|            | 
|32.1        |  | 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
|            | 
|32.2        |  | 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



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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.



|                   |  |                                                                                                                    
|------------------ |  | -------------------------------------------------------------------------------------------------------------------
|                   |  | AtriCure, Inc.                                                                                                     
|                   |  | (REGISTRANT)                                                                                                       
|                   | 
|Date: May 13, 2011 |  | /s/    David J.
Drachman                                                                                           
|                   |  | David J. Drachman                                                                                                  
|                   |  | President and Chief Executive Officer
(Principal Executive Officer)                                                
|                   | 
|Date: May 13, 2011 |  | /s/    Julie A.
Piton                                                                                              
|                   |  | Julie A. Piton                                                                                                     
|                   |  | Vice President, Finance and Administration and Chief Financial Officer
(Principal Financial and Accounting Officer)



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EXHIBIT INDEX



|            |  |                                                                                                                                                       
|----------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit
No. |  | Description                                                                                                                                           
|            | 
|31.1        |  | Rule 13a-14(a) Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                     
|            | 
|31.2        |  | Rule 13a-14(a) Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                     
|            | 
|32.1        |  | 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
|            | 
|32.2        |  | 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



28