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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549



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FORM 10-Q



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

For the quarterly period ended June 30, 2006



| ̈ | 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: 000-33001



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NATUS MEDICAL
INCORPORATED

(Exact name of registrant as specified in its charter)



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|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Delaware                                                       |  | 77-0154833                          
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)

1501 Industrial Road, San Carlos, CA 94070

(Address of principal executive offices) (Zip Code)

(650) 802-0400

(Registrants telephone number, including area code)



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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 and Exchange Act of 1934 during the preceding 12 months (or for 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 is a large accelerated filer, an accelerated filer or a
non-accelerated filer. See definition of accelerated filer and large accelerated filer in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer ̈Accelerated Filer  x    Non-accelerated filer ̈

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

The number of issued and outstanding shares of the registrants Common Stock, $0.001 par value, as of August 5, 2006, was 18,617,066.



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##### Table of Contents

NATUS MEDICAL INCORPORATED

TABLE OF CONTENTS



|           |  |                                                                                                                       |  |         
|---------- |  | --------------------------------------------------------------------------------------------------------------------- |  | --------
|           |  |                                                                                                                       |  | Page No.
|PART I.    |  | FINANCIAL INFORMATION                                                                                                 |  | 3       
|           |  |                                                                                                                      
|Item 1.    |  | Financial Statements                                                                                                  |  | 3       
|           |  |                                                                                                                      
|           |  | Condensed Consolidated Balance Sheets as of June 30, 2006 (unaudited) and December 31, 2005                           |  | 3       
|           |  |                                                                                                                      
|           |  | Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2006 and 2005 (unaudited) |  | 4       
|           |  |                                                                                                                      
|           |  | Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2006 and 2005 (unaudited)           |  | 5       
|           |  |                                                                                                                      
|           |  | Notes to Condensed Consolidated Financial Statements                                                                  |  | 6       
|           |  |                                                                                                                      
|Item 2.    |  | Managements Discussion and Analysis of Financial Condition and Results of Operations                                 |  | 19      
|           |  |                                                                                                                      
|Item 3.    |  | Quantitative and Qualitative Disclosures about Market Risk                                                            |  | 30      
|           |  |                                                                                                                      
|Item 4.    |  | Controls and Procedures                                                                                               |  | 30      
|           |  |                                                                                                                      
|PART II.   |  | OTHER INFORMATION                                                                                                     |  | 31      
|           |  |                                                                                                                      
|Item 1A.   |  | Risk Factors                                                                                                          |  | 31      
|           |  |                                                                                                                      
|Item 2.    |  | Unregistered Sales of Equity Securities and Use of Proceeds                                                           |  | 42      
|           |  |                                                                                                                      
|Item 4.    |  | Submission of Matters to a Vote of Security Holders                                                                   |  | 42      
|           |  |                                                                                                                      
|Item 6.    |  | Exhibits                                                                                                              |  | 42      
|           | 
|Signatures |  | 43                                                                                                                   



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##### Table of Contents

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

NATUS MEDICAL INCORPORATED AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except share amounts)



|                                                                                                                        |  |               |         |   |                     |   |         |  
|----------------------------------------------------------------------------------------------------------------------- |  | ------------- | ------- | - | ------------------- | - | ------- | -
|                                                                                                                        |  | June 30, 2006 |         |   | December 31,2005(1) |  
|                                                                                                                        |  | (unaudited)   |         |   |                     |  
|ASSETS                                                                                                                  |  |               |         |   |                     |   |         |  
|Current assets:                                                                                                         |  |               |         |   |                     |   |         |  
|Cash and cash equivalents                                                                                               |  | $             | 9,493   |   |                     | $ | 40,046  |  
|Short-term investments                                                                                                  |  |               |        |   |                     |   | 12,163  |  
|Accounts receivable, net of allowance for doubtful accounts of $471 and $173                                            |  |               | 12,303  |   |                     |   | 8,460   |  
|Inventories, net                                                                                                        |  |               | 8,321   |   |                     |   | 3,482   |  
|Prepaid expenses and other current assets                                                                               |  |               | 598     |   |                     |   | 1,041   |  
|                                                                                                                        |  |               |         |   |                     |   |         |  
|Total current assets                                                                                                    |  |               | 30,715  |   |                     |   | 65,192  |  
|                                                                                                                        |  |              
|Property and equipment, net                                                                                             |  |               | 9,229   |   |                     |   | 2,116   |  
|Intangible assets                                                                                                       |  |               | 28,873  |   |                     |   | 6,174   |  
|Goodwill                                                                                                                |  |               | 21,675  |   |                     |   | 3,836   |  
|Other non-current assets                                                                                                |  |               | 849     |   |                     |   | 78      |  
|                                                                                                                        |  |               |         |   |                     |   |         |  
|Total assets                                                                                                            |  | $             | 91,341  |   |                     | $ | 77,396  |  
|                                                                                                                        |  |               |         |   |                     |   |         |  
|LIABILITIES AND STOCKHOLDERS EQUITY                                                                                    |  |               |         |   |                     |   |         |  
|Liabilities:                                                                                                            |  |               |         |   |                     |   |         |  
|Accounts payable                                                                                                        |  | $             | 3,066   |   |                     | $ | 1,817   |  
|Accrued liabilities                                                                                                     |  |               | 8,926   |   |                     |   | 5,441   |  
|Current portion of note payable                                                                                         |  |               | 2,500   |   |                     |   |        |  
|Deferred revenue                                                                                                        |  |               | 1,672   |   |                     |   | 439     |  
|Deferred tax liabilities                                                                                                |  |               | 290     |   |                     |   |        |  
|                                                                                                                        |  |               |         |   |                     |   |         |  
|Total current liabilities                                                                                               |  |               | 16,454  |   |                     |   | 7,697   |  
|                                                                                                                        |  |               |         |   |                     |   |         |  
|Non-current deferred tax liabilities                                                                                    |  |               | 2,001   |   |                     |   | 734     |  
|Non-current portion of note payable                                                                                     |  |               | 5,250   |   |                     |   |        |  
|                                                                                                                        |  |               |         |   |                     |   |         |  
|Total liabilities                                                                                                       |  |               | 23,705  |   |                     |   | 8,431   |  
|                                                                                                                        |  |               |         |   |                     |   |         |  
|Commitments and contingencies                                                                                           |  |               |         |   |                     |   |         |  
|                                                                                                                        |  |              
|Stockholders equity:                                                                                                   |  |               |         |   |                     |   |         |  
|Common Stock, $0.001 par value, 120,000,000 shares authorized; shares issued and outstanding: 18,615,540 and 18,444,753 |  |               | 101,905 |   |                     |   | 99,634  |  
|Accumulated deficit                                                                                                     |  |               | (34,058 | ) |                     |   | (30,750 | )
|Accumulated other comprehensive income (loss)                                                                           |  |               | (211    | ) |                     |   | 81      |  
|                                                                                                                        |  |               |         |   |                     |   |         |  
|Total stockholders equity                                                                                              |  |               | 67,636  |   |                     |   | 68,965  |  
|                                                                                                                        |  |               |         |   |                     |   |         |  
|Total liabilities and stockholders equity                                                                              |  | $             | 91,341  |   |                     | $ | 77,396  |  
|                                                                                                                        |  |               |         |   |                     |   |         |  

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|(1) | Derived from the consolidated audited financial statements at December 31, 2005.
|--- | --------------------------------------------------------------------------------

The accompanying notes are an integral part of these condensed consolidated financial statements.



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NATUS MEDICAL INCORPORATED AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share amounts)



|                                                                               |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|------------------------------------------------------------------------------ |  | -------------------------- | ------ | ------------------------ | ---- | - | ------ |  | - | ------ | - |  | - | ------
|                                                                               |  | Three Months EndedJune 30, |        | Six Months EndedJune 30,
|                                                                               |  | 2006                       |        |                          | 2005 |   | 2006   |  |   | 2005  
|Revenue                                                                        |  | $                          | 19,966 |                          |      | $ | 10,168 |  | $ | 39,349 |   |  | $ | 19,870
|Cost of revenue                                                                |  |                            | 7,216  |                          |      |   | 3,919  |  |   | 14,509 |   |  |   | 7,790 
|                                                                               |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Gross profit                                                                   |  |                            | 12,750 |                          |      |   | 6,249  |  |   | 24,840 |   |  |   | 12,080
|                                                                               |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Operating expenses:                                                            |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Marketing and selling                                                          |  |                            | 4,993  |                          |      |   | 2,834  |  |   | 10,156 |   |  |   | 5,439 
|Research and development                                                       |  |                            | 2,459  |                          |      |   | 1,078  |  |   | 4,949  |   |  |   | 2,070 
|General and administrative                                                     |  |                            | 2,779  |                          |      |   | 1,187  |  |   | 4,933  |   |  |   | 2,551 
|Acquired in-process research and development                                   |  |                            |       |                          |      |   |       |  |   | 5,900  |   |  |   |      
|                                                                               |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Total operating expenses                                                       |  |                            | 10,231 |                          |      |   | 5,099  |  |   | 25,938 |   |  |   | 10,060
|                                                                               |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Income (loss) from operations                                                  |  |                            | 2,519  |                          |      |   | 1,150  |  |   | (1,098 | ) |  |   | 2,020 
|                                                                               |  |                            |        |                         
|Other income (expense), net                                                    |  |                            | (18    | )                        |      |   | 276    |  |   | (131   | ) |  |   | 468   
|                                                                               |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Income (loss) before provision for income tax                                  |  |                            | 2,501  |                          |      |   | 1,426  |  |   | (1,229 | ) |  |   | 2,488 
|                                                                               |  |                            |        |                         
|Provision for income tax                                                       |  |                            | 1,130  |                          |      |   | 162    |  |   | 2,079  |   |  |   | 315   
|                                                                               |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Net income (loss)                                                              |  | $                          | 1,371  |                          |      | $ | 1,264  |  | $ | (3,308 | ) |  | $ | 2,173 
|                                                                               |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Earnings (loss) per share:                                                     |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Basic                                                                          |  | $                          | 0.07   |                          |      | $ | 0.07   |  | $ | (0.18  | ) |  | $ | 0.13  
|                                                                               |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Diluted                                                                        |  | $                          | 0.07   |                          |      | $ | 0.07   |  | $ | (0.18  | ) |  | $ | .0.12 
|                                                                               |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Weighted average shares used in the calculation of net income (loss) per share |  |                            |        |                          |      |   |        |  |   |        |   |  |   |       
|Basic                                                                          |  |                            | 18,597 |                          |      |   | 17,377 |  |   | 18,541 |   |  |   | 17,267
|Diluted                                                                        |  |                            | 19,923 |                          |      |   | 18,756 |  |   | 18,541 |   |  |   | 18,527

The accompanying notes are an integral part of these condensed consolidated financial statements.



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NATUS MEDICAL INCORPORATED AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)



|                                                                                                     |  |                           |         |   |      |   |         |  
|---------------------------------------------------------------------------------------------------- |  | ------------------------- | ------- | - | ---- | - | ------- | -
|                                                                                                     |  | Six Months Ended June 30, |        
|                                                                                                     |  | 2006                      |         |   | 2005 |  
|Operating activities:                                                                                |  |                           |         |   |      |   |         |  
|Net income (loss)                                                                                    |  | $                         | (3,308  | ) |      | $ | 2,173   |  
|Adjustments to reconcile net income (loss) to net cash provided by operating activities:             |  |                           |         |   |      |   |         |  
|Acquired in-process research and development                                                         |  |                           | 5,900   |   |      |   |        |  
|Accounts receivable reserves                                                                         |  |                           | 60      |   |      |   | 22      |  
|Inventory reserves                                                                                   |  |                           | 160     |   |      |   | 69      |  
|Depreciation and amortization                                                                        |  |                           | 2,003   |   |      |   | 1,065   |  
|Warranty reserves                                                                                    |  |                           | 300     |   |      |   | 30      |  
|Share based compensation                                                                             |  |                           | 546     |   |      |   |        |  
|Changes in operating assets and liabilities, net of assets and liabilities acquired in acquisitions: |  |                           |         |   |      |   |         |  
|Accounts receivable                                                                                  |  |                           | 275     |   |      |   | 1,628   |  
|Inventories                                                                                          |  |                           | (2,779  | ) |      |   | 561     |  
|Other assets                                                                                         |  |                           | 284     |   |      |   | 106     |  
|Accounts payable                                                                                     |  |                           | 110     |   |      |   | (603    | )
|Accrued liabilities Accounts payable                                                                 |  |                           | (3,437  | ) |      |   | (277    | )
|Deferred revenue                                                                                     |  |                           | 413     |   |      |   | (50     | )
|                                                                                                     |  |                           |         |   |      |   |         |  
|Net cash provided by operating activities                                                            |  |                           | 527     |   |      |   | 4,724   |  
|                                                                                                     |  |                           |         |   |      |   |         |  
|Investing activities:                                                                                |  |                           |         |   |      |   |         |  
|Acquisition of business, net of cash acquired                                                        |  |                           | (51,380 | ) |      |   |         |  
|Acquisition of property and equipment                                                                |  |                           | (1,570  | ) |      |   | (565    | )
|Deposits and other assets                                                                            |  |                           | 525     |   |      |   |        |  
|Purchases of short-term investments                                                                  |  |                           |        |   |      |   | (85,260 | )
|Sales of short-term investments                                                                      |  |                           | 12,165  |   |      |   | 92,077  |  
|                                                                                                     |  |                           |         |   |      |   |         |  
|Net cash provided by (used in) investing activities                                                  |  |                           | (40,260 | ) |      |   | 6,252   |  
|                                                                                                     |  |                           |         |   |      |   |         |  
|Financing activities:                                                                                |  |                           |         |   |      |   |         |  
|Proceeds from stock option exercises and ESPP                                                        |  |                           | 1,040   |   |      |   | 570     |  
|Borrowing on credit facility                                                                         |  |                           | 10,000  |   |      |   |        |  
|Excess tax benefits on the exercise of stock options                                                 |  |                           | 685     |   |      |   |        |  
|Payments on borrowings                                                                               |  |                           | (2,250  | ) |      |   |        |  
|                                                                                                     |  |                           |         |   |      |   |         |  
|Net cash provided by financing activities                                                            |  |                           | 9,475   |   |      |   | 570     |  
|                                                                                                     |  |                           |         |   |      |   |         |  
|Exchange rate effect on cash and cash equivalents                                                    |  |                           | (295    | ) |      |   | (602    | )
|                                                                                                     |  |                           |         |   |      |   |         |  
|Net increase (decrease) in cash and cash equivalents                                                 |  |                           | (30,553 | ) |      |   | 10,944  |  
|Cash and cash equivalents, beginning of period                                                       |  |                           | 40,046  |   |      |   | 16,239  |  
|                                                                                                     |  |                           |         |   |      |   |         |  
|Cash and cash equivalents, end of period                                                             |  | $                         | 9,493   |   |      | $ | 27,183  |  
|                                                                                                     |  |                           |         |   |      |   |         |  
|Supplemental disclosure of cash flow information:                                                    |  |                           |         |   |      |   |         |  
|Cash paid for interest                                                                               |  | $                         | 339     |   |      | $ |        |  
|                                                                                                     |  |                           |         |   |      |   |         |  
|Cash paid for income taxes                                                                           |  | $                         | 410     |   |      | $ | 77      |  
|                                                                                                     |  |                           |         |   |      |   |         |  

The accompanying notes are an integral part of these condensed consolidated financial statements.



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NATUS MEDICAL INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

1- Basis of
Presentation

The accompanying interim condensed consolidated financial statements of Natus Medical Incorporated (Natus,
we, us, or the Company) have been prepared in accordance with accounting principles generally accepted in the United Sates of America (GAAP). Except as updated below, the accounting policies followed
in the preparation of the interim condensed consolidated financial statements are consistent in all material respects with those presented in Note 1 to the consolidated financial statements included in the Companys Annual Report on Form 10-K
for the year ended December 31, 2005.

Interim financial reports are prepared in accordance with the rules and regulations of the
Securities and Exchange Commission; accordingly, they do not include all of the information and notes required by GAAP for annual financial statements. The interim financial information is unaudited, but reflects all normal adjustments that are, in
the opinion of management, necessary for fair presentation of our financial position, results of operations and cash flows for the interim periods presented. Operating results for the three and six months ended June 30, 2006 are not necessarily
indicative of the results that may be expected for the year ending December 31, 2006.

The accompanying condensed consolidated financial
statements include the accounts of the Company and its wholly owned subsidiaries; significant intercompany transactions have been eliminated in consolidation.

Shipping Terms

Note 1 to the consolidated financial statements included in the Companys
Annual Report on Form 10-K for the year ended December 31, 2005 contains the Companys revenue recognition policies. Those policies remain unchanged, except that shipping terms for some neurology and sleep-diagnostic systems are FOB
destination, reflecting that title and risk of loss are assumed by the purchaser upon delivery.

Comprehensive Income (Loss)

The following are the components of comprehensive income (loss) (in thousands):



|                                                        |  |                            |       |   |                          |   |       |      |  |   |        |   |  |   |       |  
|------------------------------------------------------- |  | -------------------------- | ----- | - | ------------------------ | - | ----- | ---- |  | - | ------ | - |  | - | ----- | -
|                                                        |  | Three Months EndedJune 30, |       |   | Six Months EndedJune 30, |  
|                                                        |  | 2006                       |       |   | 2005                     |   |       | 2006 |  |   | 2005   |  
|Net income (loss)                                       |  | $                          | 1,371 |   |                          | $ | 1,264 |      |  | $ | (3,308 | ) |  | $ | 2,173 |  
|Unrealized gain (loss) on available-for-sale securities |  |                            |      |   |                          |   |      |      |  |   |       |   |  |   | 4     |  
|Foreign currency translation adjustment                 |  |                            | (142  | ) |                          |   | (225  | )    |  |   | (295   | ) |  |   | (602  | )
|                                                        |  |                            |       |   |                          |   |       |      |  |   |        |   |  |   |       |  
|Comprehensive income (loss)                             |  | $                          | 1,229 |   |                          | $ | 1,009 |      |  | $ | 3,013  |   |  | $ | 1,575 |  
|                                                        |  |                            |       |   |                          |   |       |      |  |   |        |   |  |   |       |  

Stockholders Equity

The following are the changes in stockholders equity (in thousands):



|                                                         |  |                            |        |   |                          |   |        |      |  |   |        |   |  |   |        |  
|-------------------------------------------------------- |  | -------------------------- | ------ | - | ------------------------ | - | ------ | ---- |  | - | ------ | - |  | - | ------ | -
|                                                         |  | Three Months EndedJune 30, |        |   | Six Months EndedJune 30, |  
|                                                         |  | 2006                       |        |   | 2005                     |   |        | 2006 |  |   | 2005   |  
|Beginning Balance                                        |  | $                          | 65,842 |   |                          | $ | 53,973 |      |  | $ | 68,965 |   |  | $ | 52,728 |  
|Net income (loss)                                        |  |                            | 1,371  |   |                          |   | 1,264  |      |  |   | (3,308 | ) |  |   | 2,173  |  
|Proceeds from stock option exercises and ESPP            |  |                            | 360    |   |                          |   | 402    |      |  |   | 1,040  |   |  |   | 570    |  
|Share-based compensation expense                         |  |                            | 189    |   |                          |   |       |      |  |   | 546    |   |  |   |       |  
|Tax benefit upon exercise of non-qualified stock options |  |                            | 15     |   |                          |   |       |      |  |   | 685    |   |  |   |       |  
|Comprehensive income (loss)                              |  |                            | (141   | ) |                          |   | (778   | )    |  |   | (292   | ) |  |   | (610   | )
|                                                         |  |                            |        |   |                          |   |        |      |  |   |        |   |  |   |        |  
|Ending balance                                           |  | $                          | 67,636 |   |                          | $ | 54,861 |      |  | $ | 67,636 |   |  | $ | 54,861 |  
|                                                         |  |                            |        |   |                          |   |        |      |  |   |        |   |  |   |        |  



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2- Basic and Diluted Net Income (Loss) Per Common Share

The Company computes net income (loss) per share in accordance with Statement of Financial Accounting Standards (SFAS) No. 128, Earnings
per Share. Basic net income (loss) per share is based upon the weighted average number of common shares outstanding during the period. Diluted net income (loss) per share is based upon the weighted average number of common shares outstanding and
dilutive common stock equivalents outstanding during the period. Common stock equivalents are options and restricted stock under the Companys stock awards plans and are calculated under the treasury stock method. Common equivalent shares from
unexercised stock options are excluded from the computation when there is a loss as their effect is anti-dilutive, or if the exercise price of such options is greater than the average market price of the stock for the period.

For the three months ended June 30, 2006, common stock equivalents of approximately 1,325,900 shares were included in the weighted average shares
outstanding used to calculate diluted income per share. For the six months ended June 30, 2006, common stock equivalents of approximately 1,439,278 shares were not used to calculate diluted net loss per share because of their anti-dilutive effect.
For the three months ended June 30, 2006, common stock equivalents of approximately 18,000 shares were excluded from the calculation of diluted income per share because the exercise price of such options were greater than the average market price of
the stock for the period. For the three and six months ended June 30, 2005, common stock equivalents of approximately 1,379,000 shares and 1,260,000 shares, respectively, were included in the weighted average shares outstanding used to calculate
diluted income per share. For the three and six months ended June 30, 2005, common stock equivalents of approximately 560,000 shares were excluded from the calculation of diluted income per share because the exercise price of such options was
greater than the average market price of the stock for the respective periods.

3- Business Combinations

Bio-logic Systems Corp.

On
January 5, 2006, the Company acquired Bio-logic Systems Corp. (Bio-logic) pursuant to an Agreement and Plan of Merger dated as of October 16, 2005. The Company made this acquisition to supplement its hearing screening business with the
addition of Bio-logics diagnostic hearing products as well as to open up new market opportunities in the areas of EEG diagnosis and monitoring of neurological dysfunction and sleep disorders. Pursuant to the terms of the merger agreement, each
outstanding share of Bio-logic common stock was converted into the right to receive $8.77 in cash. Each outstanding option to acquire Bio-logic common stock was cancelled, with the holder of the option receiving for each share covered by the option
an amount equal to the excess (if any) of $8.77 over the exercise price per share of the option. The total purchase price was approximately $69.3 million, including the payment of $68.8 million to the former stockholders and option holders of
Bio-logic and approximately $430,000 of direct costs associated with the acquisition.

In accordance with SFAS 141, Business Combinations,
the acquisition has been accounted for as a purchase business combination. Under the purchase method of accounting, the assets acquired and liabilities assumed from Bio-logic at the date of acquisition are recorded at their respective fair values as
of the acquisition date in our consolidated financial statements. The excess of the purchase price over the fair value of the acquired net assets has been recorded as goodwill in the amount of $18.4 million. No portion of this goodwill is expected
to be deductible for tax purposes. Bio-logics results of operations are included in our consolidated financial statements from the date of acquisition.

The determination of estimated fair value required management to make significant estimates and assumptions. The Company hired independent third parties to assist in the valuation of intangible assets, in-process
research and development, buildings, and land. As more fully described in Note 10  Income Taxes, during the three months ended June 30, 2006 the Company released $5.0 million of its valuation allowance for deferred tax assets as a
result of an evaluation of the Companys tax loss carryforwards. The preliminary purchase price allocation was adjusted by



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##### Table of Contents

increasing the release of valuation allowance for deferred tax assets by $5.0 million, to $9.9 million, with an
offsetting reduction of goodwill of $5.0 million, to $18.4 million. The following table summarizes the preliminary purchase price allocation of the fair value of the assets acquired and liabilities assumed at the date of acquisition, as adjusted:



|                                                      |  |   |         |  
|----------------------------------------------------- |  | - | ------- | -
|Cash                                                  |  | $ | 17,875  |  
|Accounts receivable                                   |  |   | 4,179   |  
|Property and equipment                                |  |   | 6,412   |  
|Identifiable intangible assets:                       |  |   |         |  
|Core technology                                       |  |   | 17,100  |  
|Developed technology                                  |  |   | 4,200   |  
|Tradenames                                            |  |   | 2,500   |  
|Goodwill                                              |  |   | 18,364  |  
|Other assets                                          |  |   | 3,094   |  
|Release of valuation allowance for deferred tax asset |  |   | 9,930   |  
|Deferred tax liabilities                              |  |   | (11,716 | )
|Change of control and restructuring liabilities       |  |   | (3,000  | )
|Other liabilities assumed                             |  |   | (5,583  | )
|In-process research and development                   |  |   | 5,900   |  
|                                                      |  |   |         |  
|Total purchase price                                  |  | $ | 69,255  |  
|                                                      |  |   |         |  

Intangible assets included in the purchase allocation consist of: (1) core technology of $17.1
million assigned a weighted average economic life of 19 years, (2) developed technology of $4.2 million assigned a weighted average economic life of 10 years, and (3) tradenames valued at $2.5 million that have an indefinite life. The core
technology is being amortized on a combination of straightline and graded methods of amortization depending upon the extent to which the technology has changed over time. The developed technology is being amortized on a graded method.

There are several methods that can be used to determine the estimated fair value of the acquired intangible assets and in-process research and
development (IPR&D). The Company utilized the multi-period excess earnings method (MPEE), which is based on the principle that the value of an intangible asset is equal to the present value of the incremental after-tax
cash flows attributable only to the subject intangible assets after deducting contributory asset charges. The incremental after-tax cash flows attributable to the subject intangible assets are then discounted to their present value. The projections
are based on factors such as relevant market size and acceptance of the technology, patent protection, historical pricing of similar products and expected industry trends. The MPEE method was applied to six discreet Bio-logic product lines and the
IPR&D. We used discount rates ranging from 20% to 23% in valuing the acquired core technology and developed technology, and 28% for the IPR&D.

The IPR&D represents a development project for an ambulatory recorder/amplifier for the Bio-logic Ceegraph and Sleepscan systems. At the date of the acquisition there was a significant risk associated with the
technological viability of the device. Failure to bring this product to market in a timely manner could result in a loss of market share or a lost opportunity to capitalize on this new technology. In accordance with FIN 4, Applicability of FASB
Statement No. 2 to Business Combinations Accounted for by the Purchase Method, these IPR&D intangible assets were written off by a charge to income immediately subsequent to the acquisition because the ambulatory recorder/amplifier does not
have any alternative future use. This charge is not deductible for tax purposes. The development project is ongoing and activity with respect to the project is not material to our research and development expenses.

The following unaudited pro forma combined results of operations of Natus for the three and six months ended June 30, 2005, and the six months ended June
30, 2006 are presented as if the acquisition of Bio-logic had occurred on the first day of the periods presented.

Unaudited Pro Forma
Financial Information



|                                                                              |  |                                       |        |                          |   |        |      |  |   |       
|----------------------------------------------------------------------------- |  | ------------------------------------- | ------ | ------------------------ | - | ------ | ---- |  | - | ------
|                                                                              |  | Three Months EndedJune 30,            |        | Six Months EndedJune 30,
|                                                                              |  | 2005                                  |        | 2006                     |   |        | 2005
|                                                                              |  | (in thousands, except per share data)
|Revenue                                                                       |  | $                                     | 17,622 |                          | $ | 39,452 |      |  | $ | 35,268
|Net income (loss)                                                             |  | $                                     | 1,572  |                          | $ | (5,880 | )    |  | $ | 2,607 
|Pro forma diluted earnings (loss) per share                                   |  | $                                     | 0.08   |                          | $ | (0.32  | )    |  | $ | 0.14  
|Shares used in computing pro forma basic or diluted earnings (loss) per share |  |                                       | 18,756 |                          |   | 18,541 |      |  |   | 18,527



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The unaudited pro forma results are provided for comparative purposes only and are not necessarily
indicative of what actual results would have been had we acquired Bio-logic on such dates, nor do they give effect to synergies, cost savings, and other changes expected to result from the acquisitions. Accordingly the pro forma financial results do
not purport to be indicative of results of operations as of the date hereof, for any period ended on the date hereof, or for any other future date or period.

For the period from January 1, 2006 through January 4, 2006, the following material, nonrecurring items are included in the pro forma results of operations (in thousands):



|                                                                 |  |   |      
|---------------------------------------------------------------- |  | - | -----
|Accruals related to integration plan (See Note 12)               |  | $ | 2,927
|Employer payroll taxes upon acceleration of stock option vesting |  |   | 487  

Neometrics

In July 2003, the Company purchased substantially all of the assets of Neometrics, Inc. for $3.6 million in cash plus the assumption of certain
liabilities. During the first quarter 2006, the Company resolved certain claims related to the acquisition and received $400,000 cash from the sellers as a settlement. The amount was recorded as a reduction of goodwill.

Natus Neonatal, Ltd.

During
the first quarter 2006, the Company ceased selling through a direct sales force in the U.K. and began to sell through a distributor. Related to this action the Company wrote off approximately $75,000 of goodwill associated with the Companys
U.K. subsidiary. At June 30, 2006 the U.K. subsidiary has no employees and insignificant assets or liabilities other than cash and accounts receivable.

Amortization of Intangible Assets Acquired Through Business Combinations

Amortization of
intangible assets associated with the Companys acquisitions of Neometrics, Fischer-Zoth, and Bio-logic for the three months ended June 30, 2006 and 2005 was $568,000 and $173,000, respectively, and for the six months ended June 30, 2006 and
2005 was $1,1 million and $346,000, respectively.

4- Inventories

Inventories consisted of (in thousands):



|                                |  |              |       |                  |   |      
|------------------------------- |  | ------------ | ----- | ---------------- | - | -----
|                                |  | June 30,2006 |       | December 31,2005
|Raw materials and subassemblies |  | $            | 3,716 |                  | $ | 1,695
|Finished goods                  |  |              | 4,605 |                  |   | 1,787
|                                |  |              |       |                  |   |      
|Total                           |  | $            | 8,321 |                  | $ | 3,482
|                                |  |              |       |                  |   |      

The balances at June 30, 2006 and December 31, 2005 reflect valuation reserves of approximately
$695,000 and $143,000, respectively, related primarily to specific inventory that has a cost basis that is potentially greater than its net realizable value.



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5- Property and Equipment

Property and equipment consisted of (in thousands):



|                                   |  |              |        |   |                  |   |        |  
|---------------------------------- |  | ------------ | ------ | - | ---------------- | - | ------ | -
|                                   |  | June 30,2006 |        |   | December 31,2005 |  
|Land                               |  | $            | 3,729  |   |                  | $ |       |  
|Building                           |  |              | 2,200  |   |                  |   |       |  
|Leasehold improvements             |  |              | 507    |   |                  |   | 499    |  
|Office furniture and equipment     |  |              | 3,699  |   |                  |   | 3,223  |  
|Computer software and hardware     |  |              | 3,529  |   |                  |   | 2,925  |  
|Demonstration and loaned equipment |  |              | 2,876  |   |                  |   | 2,273  |  
|                                   |  |              |        |   |                  |   |        |  
|                                   |  |              | 16,540 |   |                  |   | 8,920  |  
|Accumulated depreciation           |  |              | (7,311 | ) |                  |   | (6,804 | )
|                                   |  |              |        |   |                  |   |        |  
|Total                              |  | $            | 9,229  |   |                  | $ | 2,116  |  
|                                   |  |              |        |   |                  |   |        |  

Approximately $6.4 million of the increase in the cost basis of property and equipment from
December 31, 2005 to June 30, 2006 resulted from the acquisition of Bio-logic

6- Wells Fargo Credit Facility

On January 4, 2006, the Company entered into (i) a Credit Agreement with Wells Fargo Bank, National Association (the Credit Agreement), (ii) a
Term Commitment Note in favor of Wells Fargo (the Note) and (iii) a security Agreement in favor of Wells Fargo (collectively, the Credit Facility Documents).

Pursuant to the Credit Facility Documents, on January 5, 2006, Wells Fargo advanced $10 million to the Company, which obligation is represented by the
Note and secured by a security interest in the Companys assets. The proceeds of such advance were used solely to assist in financing the acquisition of Bio-logic. The outstanding principal balance under the Note as of the close of business on
January 30, 2006 is payable in installments over forty-eight (48) months, with a final installment consisting of all remaining unpaid principal due and payable in full on December 31, 2009. The outstanding principal balance under the Note will bear
interest, at either a floating rate or a fixed rate at the election of the Company as follows: (i) a fluctuating rate per annum one-quarter percent (0.25%) above the Prime Rate (as defined in the Note) in effect from time to time, or (ii) a fixed
rate per annum determined by Wells Fargo to be two and one-half percent (2.50%) above LIBOR (as defined in the Note) in effect on the first day of applicable one-, two- or three-month Fixed Rate Terms (as defined in the Note). The Note can be
prepaid without penalty, (i) at any time if the Company elects to have interest determined under a fluctuating rate, or (ii) at the completion of any one-, two- or three-month Fixed Rate Term.

The Credit Agreement contains covenants, including covenants relating to liquidity and other financial measures and provides for events of default,
including failure to pay any principal or interest when due, failure to perform or observe covenants, bankruptcy or insolvency events and the occurrence of a material adverse effect. The Company is in compliance with all covenants currently in
effect.

During the three months ended June 30, 2006 the Company made additional principal payments of $1.0 million in advance of their
scheduled payment.

Balances on the Note were as follows (in thousands):



|                                    |  |                                 |        |  
|----------------------------------- |  | ------------------------------- | ------ | -
|                                    |  | Three Months EndedJune 30, 2006 |       
|Note payable                        |  | $                               | 7,750  |  
|Less current portion                |  |                                 | (2,500 | )
|                                    |  |                                 |        |  
|Non-current portion of note payable |  | $                               | 5,250  |  
|                                    |  |                                 |        |  



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7- Reserve For Product Warranties

The Company provides a one-year warranty on all medical device products. The Company also sells extended service agreements on its medical device
products. Service for domestic customers is provided by Company-owned service centers that perform all service, repair and calibration services. Service for international customers is provided by a combination of Company-owned facilities and
third-party vendors on a contract basis.

The Company has accrued a warranty reserve, included in accrued liabilities on the accompanying
balance sheets, for the expected future costs of servicing products during the initial one-year warranty period. Amounts are added to the reserve on a per-unit basis by reference to historical experience in honoring warranty obligations. On new
products, where the Company does not have historical experience of the cost to honor warranties, additions to the reserve are based on a combination of factors including the standard cost of the product and other judgments, such as the degree to
which the product incorporates new technology. As warranty costs are incurred, the reserve is reduced.

Activity in the warranty reserve
during the three and six months ended June 30, 2006 and 2005 consisted of (in thousands):



|                                |  |                            |      |   |                          |   |     |      |  |   |      |   |  |   |      |  
|------------------------------- |  | -------------------------- | ---- | - | ------------------------ | - | --- | ---- |  | - | ---- | - |  | - | ---- | -
|                                |  | Three Months EndedJune 30, |      |   | Six Months EndedJune 30, |  
|                                |  | 2006                       |      |   | 2005                     |   |     | 2006 |  |   | 2005 |  
|Balance - beginning of period   |  | $                          | 746  |   |                          | $ | 241 |      |  | $ | 554  |   |  | $ | 253  |  
|Warranty accrued for the period |  |                            | 74   |   |                          |   | 37  |      |  |   | 300  |   |  |   | 74   |  
|Repairs for the period          |  |                            | (117 | ) |                          |   | (54 | )    |  |   | (151 | ) |  |   | (103 | )
|                                |  |                            |      |   |                          |   |     |      |  |   |      |   |  |   |      |  
|Balance  end of period         |  | $                          | 703  |   |                          | $ | 224 |      |  | $ | 703  |   |  | $ | 224  |  
|                                |  |                            |      |   |                          |   |     |      |  |   |      |   |  |   |      |  

8- Other income (expense), net

Other income (expense), net consisted of (in thousands):



|                                      |  |                            |      |                          |      |   |      |  |   |      |   |  |   |    
|------------------------------------- |  | -------------------------- | ---- | ------------------------ | ---- | - | ---- |  | - | ---- | - |  | - | ---
|                                      |  | Three Months EndedJune 30, |      | Six Months EndedJune 30,
|                                      |  | 2006                       |      |                          | 2005 |   | 2006 |  |   | 2005
|Interest income                       |  | $                          | 75   |                          |      | $ | 253  |  | $ | 244  |   |  | $ | 436
|Interest expense                      |  |                            | (174 | )                        |      |   |      |  |   | (339 | ) |  |   |    
|Foreign currency exchange gain (loss) |  |                            | (10  | )                        |      |   |     |  |   | (138 | ) |  |   |   
|Other                                 |  |                            | 91   |                          |      |   | 23   |  |   | 102  |   |  |   | 32 
|                                      |  |                            |      |                          |      |   |      |  |   |      |   |  |   |    
|Total other income (expense), net     |  | $                          | (18  | )                        |      | $ | 276  |  | $ | (131 | ) |  | $ | 468
|                                      |  |                            |      |                          |      |   |      |  |   |      |   |  |   |    

9- Share-based Compensation

Share-Based Compensation Prior to January 1, 2006, the Company accounted for employee share-based compensation using the intrinsic
value method supplemented by pro forma disclosures in accordance with Accounting Principles Board (APB) No. 25 and Statement of Financial Accounting Standards (SFAS) No. 123, Accounting for Stock-Based
Compensation, as amended by SFAS No. 148, Accounting for Stock-Based compensation  Transition and Disclosures.Since the Company granted options with exercise prices equal to the fair value of the Companys stock on the
date of grant, no intrinsic value and therefore no expense was recorded for these options under APB 25.

Effective January 1, 2006,
the Company adopted SFAS 123R, Share-Based Payment, using the modified prospective approach and, accordingly, prior periods have not been restated to reflect the impact of SFAS 123R. Under SFAS 123R, share-based awards granted prior to its
adoption will be expensed over the remaining portion of their vesting period. These awards are being expensed under the single-option straightline method using the same fair value measurements that were used in calculating pro forma share-based
compensation expense under SFAS 123. However, in adopting SFAS 123R, the Company reviewed the inputs for volatility under the Black-Scholes valuation methodology and determined that the volatility inputs originally used for grants of options in 2004
and 2005 were higher than they should have been, which had the effect of overstating the pro forma cost of those options presented in supplemental



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schedules. Accordingly, the Company is now using a historical volatility of 36% to determine the fair value of those
options, rather than 71% as originally reported. This change did not have a material impact on the reported pro forma expense associated with those options. For share-based awards granted on or after January 1, 2006, the Company is amortizing
share-based compensation expense under the single-option straightline method over the requisite service period, which is generally a four-year vesting period.

For the three and six months ended June 30, 2006, the Company recorded share-based compensation expense of $189,000 and $546,000, respectively, which reduced gross profit by $18,000 and $42,000, respectively,
increased operating expenses by $171,000 and $504,000, respectively, decreased net income for the three months ended June 30, 2006 by $103,000, and increased net loss for the six months ended June 30, 2006 by $299,000. The impact on basic
and diluted net income per share for the three months ended June 30, 2006 was to decrease net income per share by $0.01, and for the six months ended June 30, 2006, to increase the loss per share by $0.02. For the three and six months
ended June 30, 2005, the Company did not recognize any share-based compensation expense under the intrinsic value method. On a pro forma basis, the Companys share-based compensation during the three and six months ended June 30, 2005
was $413,000 and $798,000, respectively.

Under SFAS No. 123R, the value of each option is estimated on the date of grant using an
option pricing model, such as Black-Scholes, which was developed for use in estimating the value of freely traded options. Similar to other option pricing models, it requires the input of highly subjective assumptions, including stock price
volatility. Because (1) the Companys employee stock options have characteristics significantly different from those of traded options and (2) changes in the subjective input assumptions can materially affect the estimated fair value.

SFAS 123R requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures
differ from initial estimates. Share-based compensation expense was recorded net of estimated forfeitures for the three and six months ended June 30, 2006, such that expense was recorded only for those share-based awards that are expected to
vest. Under APB 25, to the extent awards were forfeited prior to vesting, the previously recognized expense was reversed in the period of forfeiture. Upon adoption of SFAS 123R and for the three and six months ended June 30, 2006, the Company
did not record a cumulative adjustment to account for the expected forfeitures of share-based awards granted to non-employees prior to January 1, 2006 (primarily consultants to the Company), for which the Company previously recorded an expense,
as this adjustment is not material.

Stock Plans  In July 2000, the Board of Directors of the Company adopted the 2000 Stock
Option Plan (the 2000 Plan) to be effective upon the closing of the Companys initial public offering and reserved 1,500,000 shares of common stock for issuance thereunder. Each year beginning January 1, 2002, the aggregate
number of shares reserved for issuance under the 2000 Plan will automatically increase by the lesser of (i) 1,500,000 shares, (ii) 7% of the shares of common stock outstanding at the end of the preceding year, or (iii) an amount
determined by the Board of Directors. In March 2005 and June 2005, respectively, the Board of Directors and the stockholders of the Company approved the Amended and Restated 2000 Stock Awards Plan (the Restated Plan). The Restated Plan
was amended to broaden the types of equity awards available for grant thereunder. In particular, the Restated Plan now allows for the grant of restricted stock awards, stock bonuses, stock appreciation rights and restricted stock units. On
January 1, 2006, the number of shares reserved for issuance under the Restated Plan increased by 1,291,133 shares. The Restated Plan provides for the granting of: (i) incentive stock options to employees, and (ii) nonqualified stock
options, restricted stock, stock bonuses, stock appreciation rights and restricted stock units to employees, directors and consultants.

Under the Restated Plan, incentive stock options may be issued at not less than the fair market value of the stock on the date of grant, as determined by the Board of Directors. Options issued under the Restated Plan become exercisable as
determined by the Board of Directors and expire no more than 10 years after the date of grant. Most options vest ratably over four years. For those optionees who at the time the option is granted own stock representing more than 10% of the voting
power of all classes of stock of the Company, stock options may be issued at not less than 110% of the fair market value of the stock on the date of grant, and the options expire five years after the date of grant.

The Company also has adopted the 1991 Stock Option Plan (the 1991 Plan) and the 2000 Supplemental Stock Option Plan (the Supplemental
Plan), which provided for the granting of incentive stock options to employees and nonqualified stock options to employees and consultants. Options outstanding under the 1991 Plan and the Supplemental



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Plan generally were governed by the same terms as those under the 2000 Plan. At the time of the Companys initial
public offering, the 1991 Plan and Supplemental Plan were terminated such that no new options may be granted under these plans. Outstanding options at the date of the initial public offering remained outstanding pursuant to their original terms.

In July 2000, the Company adopted the 2000 Director Stock Option Plan (the Director Plan) to be effective upon the closing of
the Companys initial public offering. The Director Plan provides for an initial grant to new nonemployee directors of options to purchase 30,000 shares of common stock. Subsequent to the initial grants, each nonemployee director is granted
options to purchase 10,000 shares of common stock at the next meeting of the Board of Directors following the annual meeting of stockholders, if on the date of the annual meeting the Director has served on the Board of Directors for six months. In
June 2006, the Board of Directors amended the Directors Plan to reduce the number of shares granted to nonemployee directors upon their appointment to the Board from 30,000 shares to 22,500 shares and to reduce the annual option grants awarded under
the Director Plan from 10,000 shares to 7,500 shares. In addition, the Board reduced the term of all options granted under the Director Plan from 10 years to six years. The amendments did not require stockholder approval. The Company reserved a
total of 400,000 shares of common stock for issuance under the Director Plan, plus an annual increase to be added on the first day of the Companys fiscal year beginning on January 1, 2002 equal to the lesser of (i) 100,000 shares,
(ii) 0.5% of the shares of common stock outstanding on the last day of the preceding fiscal year, or (iii) an amount determined by the Board of Directors. On January 1, 2006, the number of shares reserved for issuance under the
Director Plan increased by 92,224 shares.

Employee Stock Purchase Plan  In July 2000, the Board of Directors approved the
adoption of the 2000 Employee Stock Purchase Plan (the ESPP) effective upon the closing of the Companys initial public offering and reserved 1,000,000 shares of the Companys common stock for issuance thereunder. Each year,
beginning January 1, 2002, the aggregate number of shares reserved for issuance under the ESPP will automatically increase by a number of shares equal to the lesser of (i) 650,000 shares, (ii) 4% of the shares of common stock
outstanding on the last day of the preceding fiscal year, or (iii) an amount determined by the Board of Directors. Under the ESPP, eligible employees can elect to have salary withholdings of up to 15% of the sum of their W-2 cash compensation
and 401(k) contributions withheld during the offering period, to purchase shares of common stock.

On December 29, 2005, the Board of
Directors of the Company approved certain amendments to the ESPP to (i) terminate the ongoing 24-month offering periods as of December 31, 2005, (ii) provide for future six-month offering periods to commence on January 1, 2006
(ending on April 30, 2006), and each November 1 and May 1 (respectively ending on each April 30 and October 31) thereafter until further amended, and (iii) further provide that the purchase price for each offering
period commencing after December 31, 2005 shall be 85% of the fair market value on the date of purchase rather than 85% of the lower of the fair market value on the first day of the offering period or the last day of the offering period. On
January 1, 2006, the number of shares reserved for issuance under the ESPP increased by 650,000 shares.

Stock Option Activity
 Stock option activity under the Companys stock awards plans for the six months ended June 30, 2006 is summarized as follows (in thousands, except per share amounts and as noted):



|                                   |  |        |   |  |                                |       |                                                    |      |                          |   |       
|---------------------------------- |  | ------ | - |  | ------------------------------ | ----- | -------------------------------------------------- | ---- | ------------------------ | - | ------
|                                   |  | Shares |   |  | WeightedAverage PricePer Share |       | WeightedAverageRemainingContractualLife (in years) |      | AggregateIntrinsic Value
|Outstanding at December 31, 2005   |  | 2,675  |   |  | $                              | 5.81  |                                                    |     |                          |   |      
|Options granted                    |  | 520    |   |  |                                | 12.56 |                                                    |     |                          |   |      
|Options exercised                  |  | (161   | ) |  |                                | 5.48  |                                                    |     |                          |   |      
|Options canceled/forfeited/expired |  | (41    | ) |  |                                | 8.36  |                                                    |     |                          |   |      
|                                   |  |        |   |  |                                |       |                                                    |      |                          |   |       
|Outstanding at June 30, 2006       |  | 2,993  |   |  |                                | 6.97  |                                                    | 7.27 |                          | $ | 10,853
|                                   |  |        |   |  |                                |       |                                                    |      |                          |   |       
|Exercisable at June 30, 2006       |  | 1,415  |   |  |                                | 5.19  |                                                    | 6.70 |                          | $ | 7,070 
|                                   |  |        |   |  |                                |       |                                                    |      |                          |   |       

The aggregate intrinsic value in the above table represents the total pretax intrinsic value (the
aggregate difference between the closing stock price of the Companys common stock on June 30, 2006 and the exercise price for in-the-



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money options) that would have been received by the option holders if all options had been exercised on June 30,
2006. The total intrinsic value of options exercised in the three and six months ended June 30, 2006 was $368,000 and $2.2 million respectively. The weighted average grant date fair value of options granted in the three and six months ended
June 30, 2006 was $11.44 and $12.56, respectively, and for the three and six months ended June 30, 2005 was $7.98 and $9.89, respectively.

Cash received from options exercises and purchases under the ESPP for the three and six months ended June 30, 2006 was $360,000 and $1.0 million, respectively and for the three and six months ended June 30,
2005 was $402,000 and $570,000, respectively.

Restricted Stock Activity  The following table summarizes the activity for
restricted stock awards during the six months ended June 30, 2006 (in thousands):



|                              |  |        |  |                                      |      
|----------------------------- |  | ------ |  | ------------------------------------ | -----
|                              |  | Shares |  | WeightedAverage GrantDate Fair Value
|Unvested at December 31, 2005 |  |       |  |                                      |     
|Granted                       |  | 60     |  | $                                    | 11.32
|Vested                        |  |       |  |                                      |     
|Cancelled                     |  |       |  |                                      |     
|                              |  |        |  |                                      |      
|Unvested at June 30, 2006     |  | 60     |  | $                                    | 11.32
|                              |  |        |  |                                      |      

The weighted average remaining contractual life for unvested restricted stock awards and units at
June 30, 2006 was 3.7 years. No restricted stock awards vested during the three or six months ended June 30, 2006.

Black-Scholes Inputs  The fair value of option grants was estimated using the Black-Scholes option pricing model with the following weighted average assumptions:



|                         |  |                            |   |  |                          |   |  |      |   |  |      |  
|------------------------ |  | -------------------------- | - |  | ------------------------ | - |  | ---- | - |  | ---- | -
|                         |  | Three Months EndedJune 30, |   |  | Six Months EndedJune 30, |  
|                         |  | 2006                       |   |  | 2005                     |   |  | 2006 |   |  | 2005 |  
|Expected dividend yield  |  | 0.0                        |   |  | 0.0                      |   |  | 0.0  |   |  | 0.0  |  
|Risk-free interest rate  |  | 5.1                        | % |  | 3.1                      | % |  | 5.1  | % |  | 3.1  | %
|Expected volatility      |  | 36                         | % |  | 64                       | % |  | 36   | % |  | 64   | %
|Expected term (in years) |  | 5.2                        |   |  | 2.5                      |   |  | 5.2  |   |  | 2.5  |  
|Forfeiture rate          |  | 20                         | % |  | 20                       | % |  | 20   | % |  | 20   | %

The Company has no history or expectation of paying dividends on its common stock.

The risk-free interest rate is based on the U.S. Treasury yield for a term consistent with the expected life of the awards in effect at the time of
grant.

Expected volatility is based exclusively on historical volatility data of the Companys stock.

The expected term of stock options granted is based exclusively on historical data and represents the period of time that stock options granted are
expected to be outstanding. The expected term is calculated for and applied to one group of stock options, as the Company does not currently expect substantially different exercise or post-vesting termination behavior among its employee population.
The Company uses the simplified method for calculating expected term allowed by SEC Staff Accounting Bulletin 107.

Prior to June 2006 the
Board of Directors of the Company approved grants of options that had a term of 10 years. In June 2006 the Board of Directors determined that future grants of options, including options granted to employees and directors on or after June 15,
2006, will have a term of six years. For the three months ended June 30, 2006, this change



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##### Table of Contents

in policy had an immaterial impact upon the Black-Scholes input for expected term; however, the Company expects that over
time this new policy will have the effect of reducing the input for expected term, which will reduce the fair value of future options calculated under the Black-Scholes method.

Share-based compensation expense recognized in the statement of operations for the three and six months ended June 30, 2006 is based on awards
ultimately expected to vest. SFAS 123R requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company used a pre-vesting forfeiture rate of
20% in the calculation of share-based compensation expense for the three and six months ended June 30, 2006, based on weighted average historical forfeiture rates. Under the provisions of SFAS 123R, the Company will record additional expense if
the actual forfeiture rate is lower than estimated, and will record a recovery of prior expense if the actual forfeiture is higher than estimated. In the Companys pro forma information required under SFAS 123 for the periods prior to the
adoption of SFAS 123R, the Company accounted for forfeitures as they occurred.

Because the ESPP does not have a look back feature, the
compensation expense associated with the Plan is not measured by the use of the Black-Scholes pricing model, but rather by measuring the difference between the fair market value of the Companys stock on the last day of the offering period and
the purchase price for the offering period, which is 85% of the fair market value. During the three and six months ended June 30, 2006, the Company recorded $15,000 and $37,000, respectively, of compensation expense associated with the ESPP.

Three and Six Months ended June 30, 2005 Had compensation expense for the Companys stock option awards been
determined based on the Black-Scholes fair value method at grant dates, consistent with the fair value method of SFAS No. 123, the Company would have recorded additional compensation expense and its net income (loss) and earnings (loss) per
share would have been equal to the pro forma amounts presented in the following table:



|                                                                                                                |  |                                 |       |   |                               |   |       |  
|--------------------------------------------------------------------------------------------------------------- |  | ------------------------------- | ----- | - | ----------------------------- | - | ----- | -
|                                                                                                                |  | Three Months EndedJune 30, 2005 |       |   | Six Months EndedJune 30, 2005 |  
|Net income (loss), as reported                                                                                  |  | $                               | 1,264 |   |                               | $ | 2,173 |  
|Less: Compensation expense for stock options determined under the fair value method, net of related tax effects |  |                                 | (413  | ) |                               |   | (798  | )
|                                                                                                                |  |                                 |       |   |                               |   |       |  
|Pro forma net income (loss)                                                                                     |  | $                               | 851   |   |                               | $ | 1,375 |  
|                                                                                                                |  |                                 |       |   |                               |   |       |  
|Basic and diluted earnings (loss) per share: As reported                                                        |  | $                               | 0.08  |   |                               | $ | 0.13  |  
|                                                                                                                |  |                                 |       |   |                               |   |       |  
|Pro forma                                                                                                       |  | $                               | 0.05  |   |                               | $ | 0.08  |  
|                                                                                                                |  |                                 |       |   |                               |   |       |  

10- Income Taxes

Provision for Income Tax

The
Company recorded a provision for income tax of $1.1 million for the quarter ended June 30, 2006, compared to a provision of $162,000 for the same period in 2005. Our effective tax rates for the quarters ended June 30, 2006 and 2005 were
45.2% and 11.4%, respectively. Taking into account the $5.9 million IPR&D charge associated with the acquisition of Bio-logic that was recorded during the three months ended March 31, 2006, which is on an after-tax basis, our effective tax
rates in the six-month periods ended June 30, 2006 and 2005 were 44.5% and 12.7%, respectively.

Prior to the acquisition of
Bio-logic, the Company generated tax losses and maintained a full valuation allowance on its deferred tax assets. Tax expense historically consisted of: (i) a provision for the U.S. Federal corporate alternative minimum tax, (ii) minimal
domestic state taxes, and (iii) foreign taxes at statutory rates. The Company released its valuation allowance through goodwill as part of the purchase accounting for Bio-logic. Since there are no longer any unrecognized deferred tax assets,
the 2006 effective tax rate in the three and six months ended June 30, 2006 increased to near the statutory rates in the jurisdictions in which we file tax returns. The effective tax rate is higher than the statutory rate of approximately 40.5%
because of non-deductible expenses in our book income, including share-based compensation expense.



15



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Deferred Income Taxes

The Company accounts for income taxes in accordance with SFAS No. 109, Accounting for Income Taxes, which requires that deferred tax assets
and liabilities be recognized using enacted tax rates for the effect of temporary differences between the book and tax bases of recorded assets and liabilities. SFAS No. 109 also requires that deferred tax assets be reduced by a valuation
allowance if it is more likely than not that some or all of the deferred tax assets will not be realized. Prior to the acquisition of Bio-logic we provided for a full valuation allowance for our deferred tax assets, which were valued at
approximately $9.9 million. Because of the application of purchase accounting rules associated with the acquisition of Bio-logic, a valuation allowance is no longer provided for the Companys deferred tax assets, as the Company now believes
that it is more likely than not that those deferred tax assets will be fully realized.

In its Form 10-K for the year ended
December 31, 2005 the Company reported that it had total Federal and state net operating loss carryforwards of approximately $20.4 million and $7.0 million, respectively, available to reduce future taxable income. The Company also reported
federal and state credit carryforwards of approximately $700,000 and $475,000, respectively. In connection with the acquisition of Bio-logic on January 5, 2006, during the three months ended March 31, 2006 the Company initiated an analysis
of its deferred tax assets to determine whether and the extent to which any of its operating loss and credit carryforwards will be limited. Based on this preliminary analysis, the Company released $4.9 million of valuation allowance for its deferred
tax assets as part of the purchase accounting for Bio-logic.

During the three months ended June 30, 2006, the Company completed a
formal study of its tax loss carryforwards and determined that the loss carryforwards will be limited by approximately $650,000. The Company expects to benefit from approximately $19.7 million of federal tax loss carryforwards and $7.0 million of
state loss carryforwards. During the three months ended June 30, 2006 the Company released an additional $5.0 million of valuation allowance for its deferred tax assets, which resulted in adjustments to the purchase accounting for Bio-logic. At
June 30, 2006, the Companys deferred tax assets and liabilities consist of net current deferred tax liabilities of approximately $290,000 and net non-current deferred tax liabilities of approximately $2.0 million.

11- Segment, Customer and Geographic Information

The Company currently operates in one reportable segment, the Medical Devices and Related Supplies segment. With the exception of our Neometrics newborn screening data management systems (Neometrics Product
Line), the nature of the Companys products and production processes as well as type of customers and distribution methods are consistent among all product lines, including the product lines the Company gained through its acquisition of
Bio-logic. The Neometrics Product Line is differentiated from our other product lines in that it is not a medical device or related supply product, is not currently regulated by the FDA and revenue is recognized under the percentage of completion
basis. For the three and six months ended June 30, 2006, the Neometrics Product Line did not meet the quantitative thresholds for segment reporting and is therefore included in the all other reconciling line.

The accounting policies of the Companys reportable segment are the same as those presented in Note 1 to the consolidated financial statements
included in the Companys Annual Report on Form 10-K for the year ended December 31, 2005, as updated in this interim report. The Company allocates resources to and evaluates the performance of its reportable segment based on operating
income, excluding items that the Company considers non-recurring to the Companys operations, which for the six months ended June 30, 2006 consists of a $5.9 million charge for in-process research and development recognized in connection
with the Companys acquisition of Bio-logic. For management reporting purposes, corporate expenses are charged predominantly to the Medical Devices and Related Supplies segment. The asset totals disclosed by the segment are directly managed by
the segment and include accounts receivable, inventory, certain fixed assets, intangible assets and goodwill, and certain other assets. Assets that are not allocated specifically to the segment primarily include cash and cash equivalents, short-term
investments and deferred tax assets.



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The table below presents information about the Companys reportable segment (in thousands):



|                                             |  |                            |        |                          |   |        |  |   |        |   |  |   |        |  
|-------------------------------------------- |  | -------------------------- | ------ | ------------------------ | - | ------ |  | - | ------ | - |  | - | ------ | -
|                                             |  | Three Months EndedJune 30, |        | Six Months EndedJune 30, |  
|                                             |  | 2006                       |        | 2005                     |   | 2006   |  |   | 2005   |  
|Revenue:                                     |  |                            |        |                          |   |        |  |   |        |   |  |   |        |  
|Medical devices and related supplies         |  | $                          | 19,161 |                          | $ | 9,522  |  | $ | 37,988 |   |  | $ | 18,749 |  
|All other                                    |  |                            | 805    |                          |   | 646    |  |   | 1,361  |   |  |   | 1,121  |  
|                                             |  |                            |        |                          |   |        |  |   |        |   |  |   |        |  
|Total consolidated revenue                   |  | $                          | 19,966 |                          | $ | 10,168 |  | $ | 39,349 |   |  | $ | 19,870 |  
|                                             |  |                            |        |                          |   |        |  |   |        |   |  |   |        |  
|Operating income (loss):                     |  |                            |        |                          |   |        |  |   |        |   |  |   |        |  
|Medical devices and related supplies         |  | $                          | 2,243  |                          | $ | 1,142  |  | $ | 4,564  |   |  | $ | 2,288  |  
|All other                                    |  |                            | 276    |                          |   | 8      |  |   | 238    |   |  |   | (268   | )
|                                             |  |                            |        |                          |   |        |  |   |        |   |  |   |        |  
|Segment sub-total                            |  |                            | 2,519  |                          |   | 1,150  |  |   | 4,802  |   |  |   | 2,020  |  
|Acquired in-process research and development |  |                            |       |                          |   |       |  |   | (5,900 | ) |  |   |       |  
|                                             |  |                            |        |                          |   |        |  |   |        |   |  |   |        |  
|Total income (loss) from operations          |  | $                          | 2,519  |                          | $ | 1,150  |  | $ | (1,098 | ) |  | $ | 2,020  |  
|                                             |  |                            |        |                          |   |        |  |   |        |   |  |   |        |  



|                                     |  |              |        |                  |   |       
|------------------------------------ |  | ------------ | ------ | ---------------- | - | ------
|                                     |  | June 30,2006 |        | December 31,2005
|Assets:                              |  |              |        |                  |   |       
|Medical devices and related supplies |  | $            | 78,012 |                  | $ | 20,955
|All other                            |  |              | 3,836  |                  |   | 4,232 
|Corporate assets                     |  |              | 9,493  |                  |   | 52,209
|                                     |  |              |        |                  |   |       
|Total consolidated assets            |  | $            | 91,341 |                  | $ | 77,396
|                                     |  |              |        |                  |   |       

The following is revenue and long-lived asset information by geographic region (in thousands):



|                  |  |                            |        |                          |   |        |  |      |        |  |   |       
|----------------- |  | -------------------------- | ------ | ------------------------ | - | ------ |  | ---- | ------ |  | - | ------
|                  |  | Three Months EndedJune 30, |        | Six Months EndedJune 30,
|                  |  | 2006                       |        | 2005                     |   | 2006   |  | 2005
|Revenue:          |  |                            |        |                          |   |        |  |      |        |  |   |       
|United States     |  | $                          | 14,675 |                          | $ | 6,416  |  | $    | 28,639 |  | $ | 12,500
|Foreign countries |  |                            | 5,291  |                          |   | 3,752  |  |      | 10,710 |  |   | 7,370 
|                  |  |                            |        |                          |   |        |  |      |        |  |   |       
|Totals            |  | $                          | 19,966 |                          | $ | 10,168 |  | $    | 39,349 |  | $ | 19,870
|                  |  |                            |        |                          |   |        |  |      |        |  |   |       



|                   |  |              |        |             |   |       
|------------------ |  | ------------ | ------ | ----------- | - | ------
|                   |  | June 30,2006 |        | Dec 31,2005
|Long-lived assets: |  |              |        |             |   |       
|United States      |  | $            | 53,987 |             | $ | 5,988 
|Foreign countries  |  |              | 5,790  |             |   | 6,138 
|                   |  |              |        |             |   |       
|Totals             |  | $            | 59,777 |             | $ | 12,126
|                   |  |              |        |             |   |       

Long-lived assets include property and equipment (net), intangible assets and goodwill. During the
three and six months ended June 30, 2006, no single customer or foreign country contributed to more than 10% of revenue.

12-
Restructuring Reserve

On January 9, 2006, the Company initiated an integration plan (the Plan) related to the
acquisition of Bio-logic. Under the Plan, the Company reduced the size of its combined workforce by approximately 23 employees, representing approximately 10% of the workforce of the Company. Under the Plan, the Company seeks to eliminate redundant
costs resulting from the acquisition of Bio-logic and improve efficiencies in operations. A majority of notifications to employees was completed during the week of January 9, 2006, and substantially all of the staff reductions were completed by
June 30, 2006.



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The Plan has been accounted for in accordance with FASB, Emerging Issues Task Force Issue 95-3,
Recognition of Liabilities in Connection with a Purchase Business Combination. All costs associated with the Plan were recognized as a liability assumed as of the consummation date of the merger. Substantially all of the costs associated with
the Plan will result in the outlay of cash.

Following is a reconciliation of the beginning and ending restructuring reserve balances
related to the Plan (in thousands):



|                                |  |                  |   |                 |   |       |  |   |                |   |  |   |    
|------------------------------- |  | ---------------- | - | --------------- | - | ----- |  | - | -------------- | - |  | - | ---
|                                |  | BeginningBalance |   | ExpensesAccrued |   | Paid  |  |   | Ending Balance
|Six months ending June 30, 2006 |  |                  |   |                 |   |       |  |   |                |   |  |   |    
|Employee termination benefits   |  | $                |  |                 | $ | 2,827 |  | $ | (2,711         | ) |  | $ | 116
|Other                           |  |                  |  |                 |   | 100   |  |   |               |   |  |   | 100
|                                |  |                  |   |                 |   |       |  |   |                |   |  |   |    
|Totals                          |  | $                |  |                 | $ | 2,927 |  | $ | (2,711         | ) |  | $ | 216
|                                |  |                  |   |                 |   |       |  |   |                |   |  |   |    

13- Indemnification

In November 2002, the FASB issued FIN No. 45, Guarantors Accounting and Disclosure Requirements for Guarantees, Including Indirect Guarantee of
Indebtedness of Others. The Company has determined that certain agreements it has entered into, described below, fall within the scope of FIN 45.

Under its bylaws, the Company has agreed to indemnify its officers and directors for certain events or occurrences arising as a result of the officer or director serving in such capacity. The Company has a directors and officers
liability insurance policy that limits the Companys exposure and enables it to recover a portion of any amounts paid resulting from the indemnification of its directors and officers. In addition, the Company enters into indemnification
agreements with other parties in the ordinary course of business. In some cases the Company has obtained liability insurance providing coverage that limits its exposure for these other indemnified matters. The Company has not incurred material costs
to defend lawsuits or settle claims related to these indemnification agreements. The Company believes the estimated fair value of these indemnification agreements is minimal and has not recorded a liability for these agreements as of June 30,
2006.



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ITEM 2. Managements Discussion and Analysis of Financial Condition and Results of Operations

Natus®, AABR®, AOAE®, ALGO®, Cochlea-Scan®, Echo-Screen®, Ear Couplers®, Flexicoupler®,
MiniMuffs® and neoBLUE® are registered trademarks of Natus Medical Incorporated. EchoLink,
Neometrics, and Accuscreen are non-registered trademarks of Natus. Solutions for Newborn CareSMis a
non-registered service mark of Natus. Bio-logic®,
AuDX®, ABaer®, Ceegraph®, MASTER®, Navigator®, Sleepscan®, and Traveler® are
registered trademarks of Bio-logic Systems Corp. CHAMP and Smartpack are non-registered trademarks of Bio-logic.

Overview

The following Managements Discussion and Analysis of Financial Condition and Results of Operations
(MD&A) supplements the MD&A in the Companys Annual Report on Form 10-K for the year ended December 31, 2005, and presumes that readers have read or have access to the discussion and analysis in the Companys
Annual Report. Managements discussion and analysis should be read in conjunction with the Companys condensed consolidated financial statements and accompanying footnotes, the discussion of certain risks and uncertainties contained in
Item 1A of this report, and the cautionary information regarding forward-looking statements at the end of this section. MD&A includes the following sections:



| |  |  | Our Business. A general description of the Companys business;
| | - |  | --------------------------------------------------------------



| |  |  | 2006 Second Quarter Overview. A summary of key information concerning the financial results for the three and six months ended June 30, 2006;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Application of Critical Accounting Policies. A discussion of the accounting policies that are most important to the portrayal of the Companys financial condition and
results of operations and which require critical judgments and estimates;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Results of Operations. An analysis of the Companys results of operations for the periods presented in the financial statements;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------



| |  |  | Liquidity and Capital Resources. An analysis of capital resources, sources and uses of cash, investing and financing activities, off-balance sheet arrangements, contractual
obligations and interest rate hedging;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Recently Issued Accounting Pronouncements. A recap of recently issued accounting pronouncements that may have an impact upon the Companys results of operations,
financial position or cash flows; and
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Cautionary Information Regarding Forward-Looking Statements. Cautionary information about forward-looking statements.
| | - |  | ---------------------------------------------------------------------------------------------------------------------

Our Business

Natus is a
leading provider of healthcare products used for screening, detection, treatment, monitoring and tracking of common medical ailments such as hearing impairment, neurological dysfunction, epilepsy, sleep disorders, newborn jaundice and newborn
metabolic testing. We design our products to deliver accurate results in a rapid and reliable manner. In addition, our products address guidelines for standard medical practices as adopted by various medical-industry associations such as the
American Academy of Pediatrics (AAP) and the Joint Committee on Infant Hearing (JCIH).

Currently, our principal
product lines consist of our ALGO and ABaer screening products for newborn hearing screening, our AuDX and Echo-Screen OAE device for hearing screening in newborns and hearing monitoring in young children and adults, our Navigator products for
diagnostic hearing assessment in children and adults, our neoBLUE LED line of phototherapy devices for the treatment of newborn jaundice, our Ceegraph VISION product line for diagnostic electroencephalograph (EEG) monitoring, our
Sleepscan VISION product line for EEG monitoring of sleep disorders, and our Neometrics newborn screening data management systems (MSDS).



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Our revenue is generated almost exclusively from the sale of devices and systems, which are generally
non-recurring, and related supplies and services, which are generally recurring. Devices and systems revenue results from the sale of our ALGO, ABaer, Echo-Screen, AuDX, Navigator, neoBLUE, Ceegraph, and Sleepscan devices, and installation of our
Neometrics newborn screening data management systems. Supplies and services revenue results from sales of disposable supplies used with the abovementioned devices, the Nascor product line, software maintenance agreements for our Neometrics
data management systems, as well as extended service agreements on our medical devices.

In the United States we sell our product lines
primarily through a direct sales force. Our diagnostic hearing devices are sold in the U.S. through distributors. We sell our products internationally in over 80 other countries through distributors. We intend to continue expansion of our
international operations because we believe international markets represent a significant growth opportunity. International sales made to distributors are characterized by lower gross profits due to the discount from our list prices that the
distributors receive. International sales contributed to 27% of our revenue during the three and six months ended June 30, 2006, compared to 37% of our revenue during the respective periods in 2005. The reduction in international sales as a
percent of total sales in the 2006 periods, as compared to 2005, was attributable to our acquisition of Bio-logic, as their international sales comprise a lower percentage of their total sales than Natus. We anticipate that international revenue
will increase as a percent of revenue in the future.

2006 Second Quarter Overview

During the three months ended June 30, 2006, Natus recognized $20.0 million of revenue, an increase of $9.8 million or 96% from $10.2 million in the
comparable quarter of the previous year. Revenue from sales outside the U.S. increased 41% to $5.3 million for the second quarter 2006, compared with $3.8 million in the comparable quarter in 2005.

Our gross profit improved to 63.9% for the three months ended June 30, 2006, compared with 61.5% for the second quarter of 2005. For the three
months ended June 30, 2006, total operating expenses increased by $5.1 million, or approximately 100%, to $10.2 million, compared with $5.1 million for the second quarter of 2005.

Net income for the three months ended June 30, 2006 was $1.4 million, or $0.07 per diluted share, compared to net income of $1.3 million, or $0.07
per diluted share, reported in the same period in the prior year.

In order to more fully understand the comparison of the results of
operations for the second quarter of 2006 as compared to the same period in 2005, it is important to note that we acquired Bio-logic on January 5, 2006, which had a material impact on our results of operations for the three months ended June
30, 2006.

Application of Critical Accounting Policies

We prepare our financial statements in accordance with accounting principles generally accepted in the United Sates of America (GAAP). In so doing, we must often make estimates and use assumptions that can
be subjective, and consequently our actual results could differ from those estimates. For any given individual estimate or assumption we make, there may also be other estimates or assumptions that are reasonable.

During the six months ended June 30, 2006, there were no changes in the application of critical accounting policies as described in our Form 10-K
for the year ended December 31, 2005, except for those related to share-based compensation expense associated with our adoption of SFAS 123R as of January 1, 2006, as more fully described below.



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Revenue Recognition

We recognize revenue, net of discounts, from sales of medical devices and supplies, including sales to distributors, when a purchase order has been
received, when title transfers, when the selling price is fixed or determinable, and when collection of the resulting receivable is reasonably assured. Terms of sale for most domestic sales are FOB origin, reflecting that title and risk of loss are
assumed by the purchaser at the shipping point, however, terms of sale for some neurology and sleep-diagnostic systems are FOB destination, reflecting that title and risk of loss are assumed by the purchaser upon delivery. Terms of sales to
international distributors are EXW, reflecting that goods are shipped ex works, in which title and risk of loss are assumed by the distributor at the shipping point. Revenue from the Neometrics newborn screening data management systems,
which are generally highly configurable, is recognized on the percentage of completion basis over the development and implementation period of the associated installation, which typically ranges from six to 18 months. Revenue from extended service
and maintenance agreements, for both medical devices and data management systems, is recognized ratably over the service period. Advance payments from customers are recorded as deferred revenue and recognized as revenue as otherwise described above.
We generally do not provide rights of return on products. We accept trade-ins of our own and competitive medical devices. Trade-ins are recorded as a reduction of the replacement medical device sale. Provisions are made for initial standard warranty
obligations of one year, and post-sale training and customer support at the time the related revenue is recognized.

More than 90% of the
hospitals in the U.S. are members of group purchasing organizations (GPOs), which negotiate volume purchase prices for member hospitals, group practices, and other clinics. We have entered into agreements with several GPOs that typically
contain preferential terms for the GPO and its members, including provisions for some, if not all, of the following:



| |  |  | Negotiated pricing for all group members;
| | - |  | -----------------------------------------



| |  |  | Volume discounts and other preferential terms on their members direct purchases from us;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | Promotion of Natus products by the GPO to its members;
| | - |  | -------------------------------------------------------



| |  |  | Payment of marketing fees by Natus to the GPO, usually based on purchasing experience of group members; and
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | Non-recourse cancellation provisions.
| | - |  | -------------------------------------

We do not sell our
products to GPOs. Hospitals, group practices and other clinics that are members of a GPO purchase products directly from us under the terms negotiated by the GPO. Negotiated pricing and discounts are recognized as a reduction of the selling price of
our products. Revenue from sales to members of GPOs is otherwise consistent with our general revenue recognition policies as previously described.

We must exercise judgment when assessing the sufficiency of our allowance for estimated uncollectible accounts receivable. Our estimates are based on our historical collection experience within the markets in which we operate, assessment of
our average accounts receivable aging days, and any other specific information of which we may be aware, such as bankruptcy filings or liquidity problems of our customers. Any future determination that our allowance for estimated uncollectible
accounts receivable is understated could result in increased operating expense and reduce our results of operations.

Inventory is
carried at the lower of cost or market value

As a medical device manufacturer, we may be exposed to a number of factors that could
result in portions of our inventory becoming either obsolete or in excess of anticipated usage. These factors include, but are not limited to: technological changes in our markets, competitive pressures in products and prices, and our own
introduction of new product lines.

We regularly evaluate our ability to realize the value of our inventory based on a combination of
factors, including historical usage rates, forecasted sales, product life cycles, and market acceptance of new products. When we identify inventory that is obsolete or in excess of anticipated usage we write it down to realizable salvage value or
provide for inventory valuation reserves. The estimates we use in projecting future product demand may prove to be incorrect. Any future determination that our inventory is overvalued could result in increases to our cost of sales and decreases to
our operating margins and results of operations.



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Carrying value of intangible assets

We amortize intangible assets with finite lives over their useful lives; any future changes that would limit their useful lives or any determination that
these assets are carried at amounts greater than their fair value could result in additional charges. We carry goodwill and any other intangible assets with indefinite lives at original cost but do not amortize them. Any future determination that
these assets are carried at amounts greater than their fair value could result in additional charges, which could significantly impact our operating results.

We test our goodwill and indefinite-lived intangible assets for impairment at least annually as of October 1st of each year; this assessment is also performed whenever there is a change in circumstances that
indicates the carrying value of these assets may be impaired. Similarly, we test our definite-lived intangible assets for impairment whenever changes in circumstances indicate the carrying value of these assets may be impaired. Impairment indicators
include, but are not limited to, net book value as compared to market capitalization, significant negative industry and economic trends, and significant underperformance relative to historical and projected future operating results. Impairment is
considered to have occurred when the estimated undiscounted future cash flows related to the asset are less than its carrying value. Estimates of future cash flows involve consideration of many factors including the marketability of new products,
product acceptance and lifecycle, competition, appropriate discount rates, and operating margins. If these estimates or their related assumptions change in the future, we may be required to record impairment charges, which could have a significant
impact on our operating results.

Liability for product warranties

Our medical device products are covered by standard one-year product warranty plans. A liability has been established for the expected cost of servicing
our medical device products during these service periods. We base the liability in part upon our historical experience; however, estimates of the costs to honor our warranties are often difficult to determine due to uncertainty surrounding the
extent to which new products will require servicing and the costs that will be incurred to service those products. Until we have historical experience of the cost to honor warranties on new products, we base additions to the reserve on a combination
of factors including the standard cost of the product, experience with similar products, and other judgments, such as the degree to which the product incorporates new technology. The estimates we use in projecting future product warranty costs may
prove to be incorrect. Any future determination that our product warranty reserves are understated could result in increases to our cost of sales and reductions in our operating profits and results of operations.

Share-based compensation

On
January 1, 2006, the Company adopted the provision of Financial Accounting Standards Board (FASB) Statement of Financial Accounting Standard (SFAS) No. 123R, Share-Based Payment, using the modified
prospective approach. With the adoption of SFAS 123R, the Company is required to record the fair value of share-based compensation awards as expenses in the consolidated statement of operations. In order to determine the fair value of stock options
on the date of grant, the Company applies the Black-Scholes option-pricing model. Inherent in this model are assumptions related to expected dividend yield, risk-free interest rate, expected stock-price volatility, expected term, and forfeiture
rate. While the risk-free interest rate and dividend yield are less subjective assumptions, typically based on factual data derived from public sources, the expected stock-price volatility, expected life, and forfeiture rate assumptions require a
greater level of judgment which makes them critical accounting estimates. Following is a summary of the criteria the Company considers when making these estimates:



| |  |  | Expected volatility is based exclusively on historical volatility data of the Companys common stock, measured by reference to the average of the high and low price of the
stock on the same day of each week.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The expected term of stock options granted is based exclusively on historical data and represents the period of time that stock options granted are expected to be outstanding. The
expected term is calculated for and applied to one group of stock options, as the Company does not currently expect substantially different exercise or post-vesting termination behavior among its employee population. The Company uses the simplified
method for calculating expected term allowed by Securities and Exchange Commission (SEC) Staff Accounting Bulletin (SAB) No. 107.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | Share-based compensation expense is based on awards ultimately expected to vest. SFAS 123R requires forfeitures to be estimated at the time of grant and revised, if necessary, in
subsequent periods if actual forfeitures differ from those estimates. The Company bases its pre-vesting forfeiture rate on weighted average historical forfeiture rates. Under the provisions of SFAS 123R, the Company will record additional expense if
the actual forfeiture rate is lower than estimated, and will record a recovery of prior expense if the actual forfeiture is higher than estimated.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

Results of Operations

The following table sets forth, for the periods indicated, selected consolidated statements of operations data as a percentage of total revenue. Our historical operating results are not necessarily indicative of the
results for any future period.



|                                                |  |                            |   |  |                          |   |  |       |    |  |       |  
|----------------------------------------------- |  | -------------------------- | - |  | ------------------------ | - |  | ----- | -- |  | ----- | -
|                                                |  | Three Months EndedJune 30, |   |  | Six Months EndedJune 30, |  
|                                                |  | 2006                       |   |  | 2005                     |   |  | 2006  |    |  | 2005  |  
|Revenue                                         |  | 100.0                      | % |  | 100.0                    | % |  | 100.0 | %  |  | 100.0 | %
|Cost of revenue                                 |  | 36.1                       |   |  | 38.5                     |   |  | 36.9  |    |  | 39.2  |  
|                                                |  |                            |   |  |                          |   |  |       |    |  |       |  
|Gross profit                                    |  | 63.9                       |   |  | 61.5                     |   |  | 63.1  |    |  | 60.8  |  
|                                                |  |                            |   |  |                          |   |  |       |    |  |       |  
|Operating expenses:                             |  |                            |   |  |                          |   |  |       |    |  |       |  
|Marketing and selling                           |  | 25.0                       |   |  | 27.9                     |   |  | 25.8  |    |  | 27.4  |  
|Research and development                        |  | 12.3                       |   |  | 10.6                     |   |  | 12.6  |    |  | 10.4  |  
|General and administrative                      |  | 13.9                       |   |  | 11.7                     |   |  | 12.5  |    |  | 12.8  |  
|Acquired in-process research and development    |  |                           |   |  |                         |   |  | 15.0  |    |  |      |  
|                                                |  |                            |   |  |                          |   |  |       |    |  |       |  
|Total operating expenses                        |  | 51.2                       |   |  | 50.2                     |   |  | 65.9  |    |  | 50.6  |  
|                                                |  |                            |   |  |                          |   |  |       |    |  |       |  
|Income (loss) from operations                   |  | 12.7                       |   |  | 11.3                     |   |  | (2.8  | )  |  | 10.2  |  
|Other income (expense), net                     |  | (0.1                       | ) |  | 2.7                      |   |  | (0.3  | )  |  | 2.3   |  
|                                                |  |                            |   |  |                          |   |  |       |    |  |       |  
|Income (loss) before provision for income taxes |  | 12.6                       |   |  | 14.0                     |   |  | (3.1  | )  |  | 12.5  |  
|Income tax provision                            |  | 5.7                        |   |  | 1.6                      |   |  | 5.3   |    |  | 1.6   |  
|                                                |  |                            |   |  |                          |   |  |       |    |  |       |  
|Net income (loss)                               |  | 6.9                        | % |  | 12.4                     | % |  | (8.4  | )% |  | 10.9  | %
|                                                |  |                            |   |  |                          |   |  |       |    |  |       |  

Three and Six Months Ended June 30, 2006 and 2005

Bio-logic Acquisition

In order to
more fully understand the comparison of the results of operations for the three and six months ended June 30, 2006, as compared to the respective periods in 2005, it is important to note that we acquired Bio-logic on January 5, 2006 which
had a material impact on our financial position and results of operations for the 2006 periods.

Consolidated Results

Our revenue increased $9.8 million, or 96%, to $20.0 million in the three months ended June 30, 2006, from $10.2 million in the same period in 2005.
Bio-logic contributed to $8.6 million of the increase. Our revenue increased $19.5 million, or 98%, to $39.3 million in the six months ended June 30, 2006, from $19.9 million in the same period in 2005. Bio-logic contributed to $18.0 million of
the increase.

Revenue from devices and systems was $10.9 million in the three months ended June 30, 2006, up from $4.3 million in the
same period in 2005. Revenue from Bio-logics hearing diagnostic, neurology and sleep diagnostic product lines contributed to $6.3 million of the increase. Revenue from devices and systems was $21.6 million in the six months ended June 30,
2006, from $8.7 million in the same period in 2005. Revenue from Bio-logics hearing diagnostic, neurology and sleep diagnostic product lines contributed to $13.4 million of the increase

Revenue from supplies and services increased $3.0 million, or 52%, to $8.7 million in the three months ended June 30, 2006, from $5.7 million in the
same period in 2005. Sales of supplies used with Bio-logics hearing screening and diagnostic devices contributed to $2.2 million of the increase, with the remainder coming primarily from supplies used with our ALGO and Echo-Screen devices.
Revenue from supplies and services increased $6.1 million or 55%, to $17.1



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million in the six months ended June 30, 2006 from $11.0 million in the same period in 2005. Sales of supplies used
with Bio-logics hearing screening and diagnostic devices contributed to $4.7 million of the increase, with the remainder coming primarily from supplies used with our ALGO and Echo-Screen devices. Revenue from supplies and services was 43% and
44%, respectively, of total revenue in the three and six month ended June 30, 2006, compared to 57% and 55%, in the respective periods in 2005. The decrease in supplies and services revenue as a percent of total in the 2006 periods, compared to
the respective periods in 2005, is associated with the product mix of Bio-logic. No end-customer accounted for more than 10% of our revenue in the three or six months ended June 30, 2006 or 2005.

Revenue from sales outside the U.S. was $5.3 million and $10.7 million, respectively, for the three and six months ended June 30, 2006, from $3.8
million and $7.4 million in the same periods in 2005. Bio-logic contributed to $1.6 million and $4.0 million, respectively, of the increase in three and six months ended June 30, 2006.

Our gross profit increased $6.5 million, or 105%, to $12.8 million in the three months ended June 30, 2006, from $6.2 million in 2005. Our gross
profit increased $12.8 million, or 106%, to $24.8 million in the six months ended June 30, 2006, from $12.0 million in 2005. Gross profit as a percentage of revenue improved to 63.9% and 63.1%, respectively, in the three and six months ended
June 30, 2006, from 61.5% and 60.8% in the respective periods in 2005. The improvement in our gross profit percentage in 2006 was primarily attributable to the results of Bio-logic and product mix.

Total operating costs increased by $5.1 million to $10.2 million in the three months ended June 30, 2006, from $5.1 million in the same period in
2005. Total operating costs increased by $15.9 million, to $25.9 million, in the six months ended June 30, 2006, from $10.1 million in the same period in 2005. The increases were primarily attributable to a $5.9 million charge for in-process
research and development associated with our acquisition of Bio-logic, as well as $4.0 million and $8.3 million, respectively, of Bio-logic operating costs in the three and six months ended June 30, 2006. During the three and six months ended
June 30, 2006, we also recorded $189,000 and $546,000, respectively, of employee share-based compensation expense related to our adoption of SFAS 123R on January 1, 2006, which is included in cost of sales and operating expenses. We did
not record employee equity based compensation in 2005. The net increase in total operating costs from factors other than the foregoing was primarily attributable to an increase in outside consulting fees of $572,000 and $697,000, respectively, in
the three and six months ended June 30, 2006, and to a lesser extent, increased domestic sales compensation in the 2006 periods.

Our
marketing and selling expenses increased $2.2 million, or 76%, to $5.0 million in the three months ended June 30, 2006, from $2.8 million in the same period in 2005. Marketing and selling expenses increased $4.7 million, or 87%, to $10.2
million in the six months ended June 30, 2006, from $5.4 million in the same period in 2005. The increases in both periods were primarily attributable to Bio-logic, which contributed to $2.1 million and $4.7 million, respectively, of the
increase in the three and six months ended June 30, 2006, compared to the same periods in 2005.

Our research and development expenses
increased $1.4 million, or 128%, to $2.5 million in the three months ended June 30, 2006, from $1.1 million in the same period in 2005. Research and development expenses increased $2.9 million, to $4.9 million, in the six months ended
June 30, 2006, compared to $2.0 million in the comparable period in 2005. Bio-logic contributed to $1.0 million and $2.7 million, respectively, of the increase for the three and six months ended June 30, 2006, with the remainder of the
increase coming primarily from salaries and outside consulting costs.

Our general and administrative expenses increased $1.6 million, or
134%, to $2.8 million in the three months ended June 30, 2006, from $1.2 million in the same period in 2005. General and administrative expenses increased by $2.4 million, or 93%, to $4.9 million for the six months ended June 30, 2006,
compared to $2.6 million reported in the same period in 2005. Bio-logic contributed to $475,000 and $917,000, respectively, of the increase in the three and six months ended June 30, 2006. Employee share-based compensation expense was $110,000
and $247,000 for the three and six months ended June 30, 2006, while we had no employee share-based compensation expense in 2005. Outside consulting costs also increased by $400,000 and $525,000, respectively, in the three and six months ended
June 30, 2006, compared to the same periods in 2005.

Other income (expense) net consists of investment income and net capital gains
and losses from our investment portfolio, interest expense, net currency exchange gains and losses, and other miscellaneous income and expenses. We reported a net other expense of ($18,000) in the three months ended June 30, 2006, compared to
net other income of $276,000 in the same period in 2005. Net other expense for the six months ended June 30, 2006 was ($131,000)



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compared to net other income of $468,000 in the same period in 2005. The reduction in other income (expense) resulted
primarily from the decrease in our investment portfolio and an increase in interest expense related to our note payable, both of which were related to our acquisition of Bio-logic for $69.3 million.

We recorded a provision for income tax of $1.1 million for the quarter ended June 30, 2006, compared to a provision of $162,000 for the same period
in 2005. For the six months ended June 30, 2006 we recorded a provision for income tax of $2.1 million, compared to $315,000 recorded in the same period in 2005. Our effective tax rates for the quarters ended June 30, 2006 and 2005 were
45.2% and 11.4%, respectively. Taking into account the $5.9 million IPR&D charge associated with the acquisition of Bio-logic that was recorded during the three months ended March 31, 2006, which is on an after-tax basis, our effective tax
rates in the six-month periods ended June 30, 2006 and 2005 were 44.5% and 12.7%, respectively.

Prior to the acquisition of
Bio-logic, the Company generated tax losses and maintained a full valuation allowance on its deferred tax assets. Tax expense historically consisted of: (i) a provision for the U.S. Federal corporate alternative minimum tax, (ii) minimal
domestic state taxes, and (iii) foreign taxes at statutory rates. The Company released its valuation allowance through goodwill as part of the purchase accounting for Bio-logic. Since there are no longer any unrecognized deferred tax assets,
the 2006 effective tax rate in the three and six months ended June 30, 2006 increased to near the statutory rates in the jurisdictions in which we file tax returns. The effective tax rate is higher than the statutory rate of approximately 40.5%
because of non-deductible expenses in our book income, including share-based compensation expense.

Segment Results

We currently operate in one reportable segment, our Medical Devices and Related Supplies segment. Additional financial information about our segment is
set forth in Note 11  Segment, Customer and Geographic Information, of our condensed consolidated financial statements contained in this report.

Medical Devices and Related Supplies Segment

Revenue from the medical devices and related supplies
segment increased by $9.7 million, or 100%, to $19.3 million in the three months ended June 30, 2006, from $9.6 million in the same period in 2005. For the six months ended June 30, 2006, revenue from our medical devices and related
supplies segment increased by $19.2 million, or 102%, to $38 million from $18.8 million in the same period in 2005. Bio-logic contributed to $8.6 million and $18 million of the increase, respectively, for the three and six month periods, as did an
increase in sales of our neoBLUE phototherapy lights.

The medical device and related supplies segment reported income from operations of
$2.3 million in the three months ended June 30, 2006, including approximately $1.0 million of depreciation and amortization costs, compared to $1.1 million in the same period in 2005. The segment reported income from operations of $4.6 million
in the six months ended June 30, 2006, including approximately $1.9 million of depreciation and amortization costs, compared to $2.3 million in the same period in 2005. The results in 2006 were favorably impacted by the operations of Bio-logic.

All Other

A
reconciliation of segment operating results to consolidated operating results, is set forth in Note 11  Segment, Customer, and Geographic Information of our consolidated financial statements contained in this report.

Liquidity and Capital Resources

Liquidity is our ability to generate sufficient cash flows from operating activities to meet our obligations and commitments. In addition, liquidity includes the ability to obtain appropriate financing or to raise capital. Therefore,
liquidity cannot be considered separately from capital resources that consist of our current funds and the potential to increase those funds in the future. We plan to use our capital resources in meeting our commitments and in achieving our business
objectives.



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As of June 30, 2006, we had cash, cash equivalents, and short-term investments of $9.5 million,
stockholders equity of $67.6 million, and working capital of $15.4 million, compared with cash, cash equivalents, and short-term investments of $52.2 million, stockholders equity of $69.0 million, and working capital of $57.5 million as
of December 31, 2005. The reduction in our cash, cash equivalents and short-term investments is related to our acquisition of Bio-logic on January 5, 2006 for approximately $69.3 million of which we used $51.4 million of our cash.

In anticipation of the acquisition of Bio-logic we raised $7.1 million in a private placement of our stock in October 2005. We also
borrowed $10 million on a senior secured credit facility in January 2006. The outstanding principal balance under this facility as of the close of business on January 30, 2006 is payable in installments over 48 months, with a final installment
consisting of all remaining unpaid principal due and payable in full on December 31, 2009.

The credit facility contains covenants,
including covenants relating to liquidity and other financial measurements and provides for events of default, including failure to pay any principal or interest when due, failure to perform or observe covenants, bankruptcy or insolvency events and
the occurrence of a material adverse effect. We are in compliance with all covenants currently in effect.

Following this acquisition our
cash reserves and working capital have been significantly reduced. However, we believe that our current cash, cash equivalents, and short-term investment balances, and any cash generated from operations will be sufficient to meet our ongoing
operating and capital requirements for the foreseeable future. We intend to continue to acquire additional technologies, products or businesses, and these acquisitions could be significant. These actions would likely affect our future capital
requirements and the adequacy of our available funds. We may be required to raise additional funds through public or private financings, strategic relationships, or other arrangements. Any additional equity financing may be dilutive to stockholders,
and debt financing, if available, may involve restrictive covenants and increase our cost of capital. In April 2006 we filed a shelf registration statement on Form S-3 with the SEC for our sale of up to $100 million of our common stock.

During the three months ended June 30, 2006, the Company completed a formal study of its tax loss carryforwards and determined that the loss
carryforwards will be limited by approximately $650,000. The Company expects to benefit from approximately $19.7 million and $7.0 million, respectively, of federal and state tax loss carryforwards. Additionally, the Company expects to benefit from
approximately $700,000 and $475,000, respectively, of federal and state tax credit carryforwards. The tax effected value of the tax loss and credit carryforwards is approximately $10 million dollars. The Company expects that it will realize the
benefit of these deferred tax assets over the next two or more years, where it expects to pay taxes at a rate of less than 15%.

Net cash
provided by operations was $527,000 for the six months ended June 30, 2006 compared to $4.7 million for the same period in 2005. In the 2006 period, the Company reduced accrued liabilities by $3.4 million, which were primarily related to the
acquisition of Bio-logic, including $2.7 million of obligations related to change of control provisions in Bio-logic employment agreements, as well as other integration plan and acquisition-related costs. In addition we increased our inventory by
$2.8 million in the 2006 period, primarily associated with our acquisition of Bio-logic. The Company expects that for the remainder of the year its operations will provide additional cash resources.

Excluding purchases and sales of short-term investments, and approximately $51.4 million of the Companys cash used to acquire Bio-logic, cash used
in investing activities in the six months ended June 30, 2006 was $1.0 million, primarily to acquire equipment, offset by a reduction in deposits and other assets. This compares to $565,000 of cash used in investing activities for the six
months ended June 30, 2005.

Cash provided by financing activities was $9.5 million in the six months ended June 30, 2006,
compared to $570,000 in the same period in 2006. We borrowed $10 million on a note under a senior secured credit facility with Wells Fargo Bank related to our acquisition of Bio-logic during the 2006 period. Principal on the note is payable in 48
equal monthly installments. We expect to generate sufficient cash from our operations to meet the debt service on this note. Other sources of cash from financing activities were primarily from purchases of our stock pursuant to our stock option
plans and our employee stock purchase plan in the amount of $1.0 million and $570,000 in the six months ended June 30, 2006 and 2005, respectively. We also realized an excess tax benefit of $565,00 on the exercise of employee stock options for
the six months ended June 30, 2006 that was recorded as an increase to stockholders equity.



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Our future liquidity and capital requirements will depend on numerous factors, including the:



| |  |  | Amount and timing of revenue;
| | - |  | -----------------------------



| |  |  | Extent to which our existing and new products gain market acceptance;
| | - |  | ---------------------------------------------------------------------



| |  |  | Extent to which we make acquisitions;
| | - |  | -------------------------------------



| |  |  | Cost and timing of product development efforts and the success of these development efforts;
| | - |  | --------------------------------------------------------------------------------------------



| |  |  | Cost and timing of marketing and selling activities; and
| | - |  | --------------------------------------------------------



| |  |  | Availability of borrowings under line of credit arrangements and the availability of other means of financing.
| | - |  | --------------------------------------------------------------------------------------------------------------

In the normal course of business, we enter into obligations and commitments that require future contractual payments. The commitments result primarily
from firm, noncancellable purchase orders placed with contract vendors that manufacture some of the components used in our medical devices and related disposable supply products, as well as commitments for leased office, manufacturing, and warehouse
facilities. In addition, during the six months ended June 30, 2006, we borrowed $10.0 million on a senior credit facility with Wells Fargo Bank, reflected as note payable in the table below. The impact that our contractual
obligations and commercial commitments as of June 30, 2006 are expected to have on our liquidity and cash flow in future periods is as follows:



|                                   |  |                        |        |                 |   |          |  |          |       |                  |   |   |  |   |  
|---------------------------------- |  | ---------------------- | ------ | --------------- | - | -------- |  | -------- | ----- | ---------------- | - | - |  | - | -
|                                   |  | Payments Due by Period
|                                   |  | Total                  |        | Less than1 Year |   | 1-3Years |  | 3-5Years |       | More than5 Years
|Unconditional purchase obligations |  | $                      | 8,173  |                 | $ | 8,140    |  | $        | 33    |                  | $ |  |  | $ | 
|Note payable                       |  |                        | 7,750  |                 |   | 2,500    |  |          | 5,250 |                  |   |  |  |   | 
|Operating lease obligations        |  |                        | 1,840  |                 |   | 484      |  |          | 1,356 |                  |   |  |  |   | 
|                                   |  |                        |        |                 |   |          |  |          |       |                  |   |   |  |   |  
|Total                              |  | $                      | 17,763 |                 | $ | 11,124   |  | $        | 6,639 |                  | $ |  |  | $ | 
|                                   |  |                        |        |                 |   |          |  |          |       |                  |   |   |  |   |  

Unconditional purchase obligations relate primarily to purchase orders with our suppliers for
materials used in our production processes. The table above does not include obligations under employment agreements for services rendered in the normal course of business.

Recent Accounting Pronouncements

In December 2004, the FASB issued SFAS No. 123R,
Share-Based Payment. On March 29, 2005, the SEC issued SAB No. 107, which provides guidance regarding the adoption of SFAS No. 123R and disclosures in Managements Discussion and Analysis.

The Company adopted SFAS No. 123R on January 2006 using the modified prospective method, whereby the Company will expense the remaining portion of
the requisite service period under previously granted unvested awards outstanding as of January 1, 2006 and new share-based payment awards granted or modified after January 1, 2006. The Company expects that implementation of SFAS
No. 123R will result in additional expense related to share-based compensation of approximately $1.4 million before tax in 2006. The actual expense in 2006 will depend on a number of factors, including the extent to which existing unvested
awards expire pursuant to the terms of the awards, the fair value of future awards at the time of grant, and the number of share-based awards granted in 2006.

In June 2005, the FASB issued SFAS No. 154, Accounting Changes and Error Corrections, a replacement of APB Opinion No. 20, Accounting Changes, and SFAS No. 3, Reporting Accounting Changes in Interim
Financial Statements. SFAS 154 changes the requirements for the accounting for and reporting of a change in accounting principle. Previously, most voluntary changes in accounting principles required recognition of a cumulative effect adjustment
within net income of the period of the change. SFAS 154 requires retrospective application to prior periods financial statements, unless it is impracticable to determine either the period-specific effects or the cumulative effect of the
change. SFAS 154 is effective for accounting changes made in fiscal years beginning after December 15, 2005; however, it does not change the transition provisions of any existing accounting pronouncements. The Company does not expect that this
statement will have a material impact on our results of operations, financial position, or cash flows.



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In February 2006, the FASB issued SFAS No. 155, Accounting for Certain Hybrid Financial
Instruments  an amendment of FASB Statements No. 133 and 140. SFAS No. 155 permits fair value remeasurement for any hybrid financial instrument that contains an embedded derivative that otherwise would require bifurcation,
clarifies which interest-only strips and principal-only strips are not subject to the requirements of FASB Statement No. 133, and establishes a requirement to evaluate interests in securitized financial assets to identify interests that are
freestanding derivatives or that are hybrid financial instruments that contain an embedded derivative requiring bifurcation. In addition, SFAS No. 155 clarifies that concentrations of credit risk in the form of subordination are not embedded
derivatives and amends SFAS No. 140 to eliminate the prohibition on a qualifying special purpose entity from holding a derivative financial instrument that pertains to a beneficial interest other than another a derivative financial instrument.
SFAS No. 155 is effective for all financial instruments acquired or issued after the beginning of an entitys first fiscal year that begins after September 15, 2006. The Company will adopt SFAS No. 155 as of January 1, 2007,
and does not expect that this statement will have a material impact on our results of operations, financial position, or cash flows.

In
March 2006, the FASB issued SFAS No. 156, Accounting for Servicing of Financial Assetsan amendment of FASB Statement No. 140. SFAS No. 156 requires that an entity separately recognize a servicing asset or a servicing
liability when it undertakes an obligation to service a financial asset under a servicing contract in certain situations. Such servicing assets or servicing liabilities are required to be initially measured at fair value, if practicable. SFAS
No. 156 also allows an entity to choose either the amortization method or the fair value measurement method to account for servicing assets and servicing liabilities within the scope of this Statement. SFAS No. 156 is effective after the
beginning of an entitys first fiscal year that begins after September 15, 2006. The Company will adopt SFAS No. 156 as of January 1, 2007, and does not expect that this statement will have a material impact on our results of
operations, financial position, or cash flows.

In June 2006, the FASB issued FASB Interpretation (FIN) No. 48,
Accounting for Uncertainty in Income Taxes.FIN No. 48 is an interpretation of FASB Statement No. 109, Accounting for Income Taxes, and must be adopted by the Company no later than January 1, 2007. FIN 48
prescribes a comprehensive model for recognizing, measuring, presenting, and disclosing in the financial statements uncertain tax positions that the Company has taken or expects to take in its tax returns. The Company is evaluating the impact of
adopting FIN 48.

Cautionary Information Regarding Forward Looking Statements

This report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the
Securities Exchange Act of 1934 about Natus Medical Incorporated (Natus, we, us, or our Company). These statements include, among other things, statements concerning our expectations, beliefs, plans,
intentions, future operations, financial condition and prospects, and business strategies. The words may, will, continue, estimate, project, intend, believe,
expect, anticipate, and other similar expressions generally identify forward-looking statements. Forward-looking statements in this Item 2 include, but are not limited to, statements regarding the following: our ability
to service our debt; our effective tax rate in 2006, the cost of share-based compensation expense under SFAS 123R, our expectations of future profitability and the generation of positive operating cash flows, the effectiveness and advantages of our
products, factors relating to demand for and economic advantages of our products, our plan to develop and acquire additional technologies, products or businesses, our expectation regarding growth in international sales, our marketing, technology
enhancement, and product development strategies, our intention to enter into agreements with group purchasing organizations, our intention to introduce new products and extend existing product lines, our intention to seek strategic partners, our
belief that we bring products to market efficiently, development of technologies into successful products, our estimate of the length of time for patents to issue, identity of our competition and factors for competition, our compliance with
regulatory requirements and laws, and our plan to seek approval to sell our products in additional countries.

Forward-looking
statements are not guarantees of future performance and are subject to substantial risks and uncertainties that could cause the actual results predicted in the forward-looking statements as well as our future financial condition and results of
operations to differ materially from our historical results or currently anticipated results. Investors should carefully review the information contained under the caption Risk Factors contained in Part II, Item 1A of this report
for a description of risks and uncertainties. All forward-looking statements are based on information available to us on the date hereof, and we assume no obligation to update forward-looking statements.



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ITEM 3. Quantitative and Qualitative Disclosures about Market Risk

We develop products in the U.S. and
sell those products primarily in the U.S., Europe, Asia, and Oceania. As a result, our financial results could be affected by factors such as changes in foreign currency exchange rates or weak economic conditions in foreign markets. Most of our
sales in Europe and Asia are denominated in U.S. dollars. With the acquisition of Fischer-Zoth in September 2004, a portion of our sales is denominated in the Euro. As our sales in currencies other than the U.S. dollar increase, our exposure to
foreign currency fluctuations may increase.

In addition, changes in exchange rates also may affect the end-user prices of our products
compared to those of our foreign competitors, who may be selling their products based on local currency pricing. These factors may make our products less competitive in some countries.

If the U.S. dollar uniformly increased or decreased in strength by 10% relative to the currencies in which our sales were denominated, our net income
would have correspondingly increased or decreased by an immaterial amount for the three months ended June 30, 2006. Our interest income is sensitive to changes in the general level of interest rates in the U.S., particularly since the majority
of our investments are in short-term instruments. However, as substantially all of our short-term investments and cash-equivalents carry a fixed rate of interest, a hypothetical decrease of 10% in market interest rates would not result in a material
decrease in interest income earned on investments held at June 30, 2006 through the date of maturity on those investments.

The fair
value of our available-for-sale securities and cash equivalents is also sensitive to changes in the general level of interest rates in the U.S., and the fair value of our portfolio will fall if market interest rates increase. However, since we
generally have the ability to hold these investments to maturity, these declines in fair value may never be realized. If market interest rates were to increase by 10% from levels at June 30, 2006, the fair value of our portfolio would decline
by an immaterial amount.

All of the potential changes noted above are based on sensitivity analyses performed on our financial position as
of June 30, 2006. Actual results may differ as our analysis of the effects of changes in interest rates does not account for, among other things, sales of securities prior to maturity and repurchase of replacement securities, the change in mix
or quality of the investments in the portfolio, and changes in the relationship between short-term and long-term interest rates.

We invest
our excess cash in short-term investments that carry relatively short maturities because our intent is to have cash resources available for potential acquisitions of additional technologies, products, or businesses, and these acquisitions could be
significant.

ITEM 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our companys management, with the participation of our chief executive officer and our chief financial officer, has evaluated the effectiveness of
our disclosure controls and procedures as of June 30, 2006.

Under the rules of the Securities and Exchange Commission,
disclosure controls and procedures are controls and other procedures that are designed to ensure that information required to be disclosed in the reports that we file or submit under the Securities Exchange Act of 1934, such as this
Quarterly Report on Form 10-Q, is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the Securities and Exchange Commission. Disclosure controls and procedures include, without limitation,
controls and procedures designed to ensure that information required to be disclosed by us in our reports that we file or submit under the Securities Exchange Act of 1934 is accumulated and communicated to our management, including our chief
executive officer and chief financial officer, as appropriate, to allow timely decisions regarding required disclosure.



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Based on such evaluation, our chief executive officer and chief financial officer have concluded that, as
of June 30, 2006, our disclosure controls and procedures were effective.

Changes in Internal Control Over Financial Reporting

Under the rules of the Securities and Exchange Commission, internal control over financial reporting is defined as a
process designed by, or under the supervision of, an issuers principal executive and principal financial officers, and effected by the issuers board of directors, management and other personnel, to provide reasonable assurances regarding
the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

There have not been any changes in our internal control over financial reporting during the quarter ended June 30, 2006 that have materially affected, or are reasonably likely to materially affect, our internal
control over financial reporting.

PART II. OTHER INFORMATION

ITEM 1A. Risk Factors

On January 5, 2006 we completed our acquisition of Bio-logic. There are numerous risks
associated with the acquisition

The acquisition of Bio-logic may not result in improved operating results for us, or in our achieving
financial condition superior to that which we would have achieved had we not completed the acquisition. The acquisition could fail to produce the benefits that we anticipate, or could have other adverse effects that we currently do not foresee. In
addition, some of the assumptions that we have relied upon, such as achievement of operating synergies, may not be realized. In this event, the acquisition could result in reduced earnings of Natus as compared to the earnings that would have been
achieved by Natus if the acquisition had not occurred.

We used virtually all of our existing cash resources to complete the acquisition,
and have also incurred indebtedness under a new credit facility for a portion of the purchase price. This usage of cash has had an adverse impact on our liquidity, and will force us to place more reliance on cash flow from operations for our
liquidity. If our cash flow from operations is not sufficient for our needs, our business could be adversely affected. If we are required to seek additional external financing to support our need for cash, we may not have access to financing on
terms that are acceptable to us, or at all. Alternatively, we may obtain additional financing on terms that are dilutive to existing holders of our common stock or that include covenants that restrict our business, or both.

We entered into a senior secured borrowing facility to obtain a portion of the funds needed to complete the acquisition. The loan causes us to incur
interest charges for such time as the loan is outstanding. In addition, the loan contains various covenants by us that directly or indirectly restrict our ability to engage in activities that we may otherwise believe to be in the best interests of
the Company. The loan is secured by the assets of the Company, and this security interest may have a negative effect on our ability to engage in financing or other activities in future periods.

If we fail to successfully manage the combined operations of Natus and Bio-logic, we may not realize the potential benefits of the acquisition.
Bio-logics primary offices are located in Mundelein, Illinois and it also has employees and contractors in, among other places, Israel and Poland. The geographical distance between Bio-logics and our facilities may further adversely
affect our ability to manage these operations. If we fail to manage these disparate operations effectively, our results of operations could be harmed, employee morale could decline, key employees could leave, and customers could cancel existing
orders or choose not to place new ones. In addition, we may not achieve the synergies or other benefits of the acquisition that we anticipate. We may encounter the following difficulties, costs and delays involved in managing these operations:



| |  |  | Failure to successfully manage relationships with customers and other important business partners;
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | Failure of customers to continue using the products and services of the combined company;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | The loss of key employees;
| | - |  | --------------------------



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| |  |  | Challenges encountered in managing larger, more geographically dispersed operations;
| | - |  | ------------------------------------------------------------------------------------



| |  |  | Diversion of the attention of management from other ongoing business concerns; and
| | - |  | ----------------------------------------------------------------------------------



| |  |  | Potential impairment charges incurred to write down the carrying amount of intangible assets generated as a result of the acquisition.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------

We have a history of losses, variable quarterly results, and seasonality in the sale of our products, and may not maintain profitability in the future

Since our inception, we have incurred significant net losses, including net losses for the years 2003 and 2004, and we may incur net losses in the
future. As of June 30, 2006, we had an accumulated deficit of approximately $34.0 million. Additionally, our revenue and operating results have varied significantly from quarter to quarter in the past and may continue to fluctuate in the
future. The following are among the factors that could cause our revenue, operating results and margins to fluctuate significantly from quarter to quarter:



| |  |  | Budgeting cycle of our customers, particularly government entities;
| | - |  | -------------------------------------------------------------------



| |  |  | Size and timing of specific sales, such as large purchases of our devices and systems or our supplies and services by government agencies or hospital systems;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Trade-in allowances or other concessions in connection with the introduction of new products or improvements to existing products;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------



| |  |  | Length and unpredictability of our sales cycle; and
| | - |  | ---------------------------------------------------



| |  |  | Marked changes caused by rapidly evolving technology.
| | - |  | -----------------------------------------------------

In
addition, we experience seasonality in our revenue. For example, our sales typically decline from our fourth fiscal quarter to our first fiscal quarter, due to patterns in the capital budgeting and purchasing cycles of our current and prospective
customers, many of which are government agencies. We may also experience declining sales in the third fiscal quarter due to summer holiday and vacation schedules. We anticipate that we will continue to experience these seasonal fluctuations, which
may lead to fluctuations in our quarterly operating results. We believe that you should not rely on our results of operations for interim periods as an indication of our expected results in any future period.

We anticipate that it will become increasingly difficult for us to manage our expenses as we:



| |  |  | Continue to invest in research and development to enhance our hearing-screening and phototherapy product lines, the technologies we acquired from Bio-logic, and other products and
technologies;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Develop additional applications for our current technology;
| | - |  | -----------------------------------------------------------



| |  |  | Increase our marketing and selling activities, particularly outside the U.S.;
| | - |  | -----------------------------------------------------------------------------



| |  |  | Develop additional infrastructure and hire required management and other employees to keep pace with our growth
| | - |  | ---------------------------------------------------------------------------------------------------------------

As a result of these factors, we may need to generate proportionately higher revenue to maintain profitability. We cannot be certain that we will be able
to sustain profitability in the future.

Our operations may be restricted by the terms of our debt, which could adversely affect us

The credit facility that we entered into to finance a portion of the purchase price of Bio-logic includes a number of restrictive covenants. These
covenants could adversely affect us by limiting our ability to plan for or react to market conditions or to meet our capital needs. These covenants will, among other things, restrict our ability to:



| |  |  | Incur more debt;
| | - |  | ----------------



| |  |  | Create liens;
| | - |  | -------------



| |  |  | Pay dividends and make distributions or repurchase stock;
| | - |  | ---------------------------------------------------------



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| |  |  | Make large capital expenditures; and
| | - |  | ------------------------------------



| |  |  | Merge, consolidate, or make other changes to our corporate structure, or transfer or sell assets.
| | - |  | -------------------------------------------------------------------------------------------------

In addition, our credit agreement requires us to maintain certain financial ratios and meet other financial covenants. Our failure to comply with these
ratios or covenants would cause a default that, if not cured or waived, could result in our being required to repay the borrowing under our credit facility before its due date. If we are unable to make this repayment or otherwise refinance the
borrowing, the lender under our credit agreement could foreclose on our assets. If we refinance the borrowing on less favorable terms, our results of operations and financial condition could be adversely impacted by increased costs and rates. In
addition, our failure to maintain covenants related to our credit agreement could have an impact on our other contractual arrangements that require us to maintain third-party credit-related covenants.

We may be unable to service our debt or maintain sufficient liquidity and working capital

Our ability to make scheduled payments on or to refinance our obligations with respect to our debt will depend on our financial and operating performance.
We cannot assure you that our business will generate sufficient cash flow from operations or that future borrowings will be available to us to enable us to service our debt or to fund our other liquidity and working capital needs. If we are unable
to meet our debt obligations or fund our other liquidity and working capital needs, we may need to restructure or refinance all or a portion of our debt or sell certain of our assets. We cannot assure you that we would be able to restructure or
refinance any of our debt on commercially reasonable terms, if at all, which could cause us to default on our debt obligations and impair our liquidity. Any refinancing of our debt could be at higher interest rates and may require us to comply with
less favorable covenants, which could further restrict our business operations.

In the past, we have relied on sales of our newborn screening products
for the majority of our revenue, and these products will continue to contribute to a substantial portion of our revenue; a decline in sales of these products could cause our revenue to fall

We expect that the revenue from our newborn hearing screening products will continue to account for a substantial portion of our revenue for at least the
next year. Any factors adversely affecting the pricing of our newborn hearing screening devices and related supplies, or demand for our newborn hearing screening products, including physician acceptance or the selection of competing products, could
cause our revenue to decline and our business to suffer.

Our markets are very competitive and in the United States we sell certain of our products in a
mature market

We face competition from other companies in all of our product lines. Our competitors range from small, privately-held
companies to multinational corporations, and their product offerings vary in scope and breadth. We do not believe that any single competitor is dominant in any of our product lines.

The markets for certain of our products in the U.S., including the newborn hearing screening and EEG monitoring markets, are mature and we are unlikely
to see significant growth for such products in the U.S. In the U.S. we derive a significant portion of our revenue from the sale of disposable supplies that are used with our hearing screening devices. Because these disposable supply products can
generate high margins, we expect that our products, particularly our hearing screening disposable supply products, could face increasing competition, including competitors offering lower prices, which could have an adverse affect on our revenue and
margins.

We believe that our primary competitive strength relates to the functionality and reliability of our products. Our competitors
may have certain competitive advantages, which include the ability to devote greater resources to the development, promotion and sale of their products. Consequently, we may need to increase our efforts, and related expenses for research and
development, to maintain or improve our position.

We expect recurring sales to our existing customers to generate a majority of our
revenue in the future, and if our existing customers do not continue to purchase products from us, our revenue may decline.



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Our business could be harmed if our competitors establish cooperative relationships with large medical device vendors
or rapidly acquire market share through industry consolidation

Large medical device vendors may acquire or establish cooperative
relationships with our current competitors. We expect that the medical device industry will continue to consolidate. New competitors or alliances among competitors may emerge and rapidly acquire significant market share, which would harm our
business and financial prospects.

Our operating results may decline if we do not succeed in developing, acquiring and marketing additional products or
improving our existing products

We intend to develop and acquire additional products and technologies for the screening, detection,
treatment, monitoring and tracking of common medical ailments. Developing and acquiring new products, and improving our existing products, to meet the needs of current and future customers requires significant investments in research and
development. If we fail to successfully sell new products, update our existing products, or timely react to changes in technology, our operating results may decline as our existing products reach the end of their commercial life cycles.

If we fail in our efforts to educate clinicians, government agency personnel, and third-party payors on the effectiveness of our products, we will not achieve
future sales growth

It is critical to the success of our sales efforts that we educate a sufficient number of clinicians, hospital
administrators, and government agencies about our products and the costs and benefits of their use. The commercial success of our products depends upon clinician, government agency and other third-party payor confidence in the economic and clinical
benefits of our products as well as their comfort with the efficacy, reliability, sensitivity and specificity of our products. We believe that clinicians will not use our products unless they determine, based on published peer-reviewed journal
articles and experience, that our products provide an accurate and cost-effective alternative to other means of testing or treatment. Our customers may choose to use competitive products, which may be less expensive or may provide faster results
than our devices. Clinicians are traditionally slow to adopt new products, testing practices and clinical treatments, partly because of perceived liability risks and the uncertainty of third-party reimbursement. If more clinicians, government
agencies and hospital administrators do not adopt our products, we may not maintain profitability. Factors that may adversely affect the medical communitys acceptance of our products include:



| |  |  | Publication of clinical study results that demonstrate a lack of efficacy or cost-effectiveness of our products;
| | - |  | ----------------------------------------------------------------------------------------------------------------



| |  |  | Changing governmental and physician group guidelines;
| | - |  | -----------------------------------------------------



| |  |  | Performance, quality, price and total cost of ownership of our products relative to other competitive products;
| | - |  | ---------------------------------------------------------------------------------------------------------------



| |  |  | Our ability to maintain and enhance our existing relationships and to form new relationships with leading physicians, physician organizations, hospitals, state laboratory personnel,
and third-party payors;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Changes in state and third-party payor reimbursement policies for our products; and
| | - |  | -----------------------------------------------------------------------------------



| |  |  | Rescission of laws requiring universal newborn hearing screening and metabolic screening.
| | - |  | -----------------------------------------------------------------------------------------

Demand for some of our products depends on the capital spending policies of our customers, and changes in these policies could harm our business

A majority of customers for our products are hospitals, physician offices, and clinics. Many factors, including public policy spending provisions,
available resources, and economic cycles have a significant effect on the capital spending policies of these entities and therefore the amount that they can spend on our equipment products. If budget resources limit the capital spending of our
customers, they will be unlikely to either purchase any new equipment from us or upgrade to any of our newer equipment products. These factors can have a significant effect on the demand for our products.



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Our plan to expand our international operations will result in increased costs and is subject to numerous risks; if
our efforts are not successful, this could harm our business

The domestic market for our newborn hearing screening products is mature
and we plan to expand our international sales and marketing efforts to increase sales of our products in foreign countries. We have only begun over the past five years to significantly develop our distributor network outside the U.S. We may not
realize corresponding growth in revenue from growth in international unit sales, due to the lower average selling prices we receive on sales outside of the U.S. Even if we are able to successfully expand our international selling efforts, we cannot
be certain that we will be able to create or increase demand for our products outside of the U.S. Our international operations are subject to other risks, which include:



| |  |  | Impact of possible recessions in economies outside the U.S.;
| | - |  | ------------------------------------------------------------



| |  |  | Political and economic instability, including instability related to war and terrorist attacks in the U.S. and abroad;
| | - |  | ----------------------------------------------------------------------------------------------------------------------



| |  |  | Contractual provisions governed by foreign law, such as local law rights to sales commissions by terminated distributors;
| | - |  | -------------------------------------------------------------------------------------------------------------------------



| |  |  | Decreased health care spending by foreign governments that would reduce international demand for our produces;
| | - |  | --------------------------------------------------------------------------------------------------------------



| |  |  | A strengthening of the U.S. dollar relative to foreign currencies that could make our products less competitive because most of our international sales are denominated in the U.S.
dollar;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Greater difficulty in accounts receivable collection and longer collection periods;
| | - |  | -----------------------------------------------------------------------------------



| |  |  | Difficulties of staffing and managing foreign operations;
| | - |  | ---------------------------------------------------------



| |  |  | Reduced protection for intellectual property rights in some countries and potentially conflicting intellectual property rights of third parties under the laws of various foreign
jurisdictions;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Difficulty in obtaining and maintaining foreign regulatory approval; and
| | - |  | ------------------------------------------------------------------------



| |  |  | Attitudes by clinicians, and cost reimbursement policies, towards use of disposable supplies that are potentially unfavorable to our business.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------

If guidelines mandating universal newborn screening do not continue to develop in foreign countries and governments do not mandate testing of all newborns as we
anticipate, or if those guidelines have a long phase-in period, our revenues may not grow

We estimate that approximately 90% to 95% of
the children born in the U.S. are currently being tested for hearing impairment prior to discharge from the hospital. To date, there has been only limited adoption of newborn hearing screening prior to hospital discharge by foreign governments, and
the phase-in period varies from several months to several years. The widespread adoption of these guidelines depends, in part, on our ability to educate foreign government agencies, neonatologists, pediatricians, third-party payors, and hospital
administrators about the benefits of universal newborn screening as well as the use of our products to perform the screening and monitoring. Our revenues may not grow if governments do not require universal newborn screening prior to hospital
discharge, or if physicians or hospitals are slow to comply with those guidelines, or if governments provide for a lengthy phase-in period for compliance.

Because we rely on distributors or sub-distributors to sell our products in most of our markets outside of the U.S., our revenue could decline if our existing distributors reduce the volume of purchases from us, or if our relationship
with any of these distributors is terminated

We currently rely on our distributors or sub-distributors for a majority of our sales
outside the U.S. Our reliance on international distributors has increased because of our decisions in 2004 and 2005 to close our Japanese and U.K. sales subsidiaries and sell through distributors in those countries, and because of our acquisition of
Fischer-Zoth, which sells its products through distributors in Europe and Asia. Some distributors also assist us with regulatory approvals and education of clinicians and government agencies. We intend to continue our efforts to increase our sales
in Europe, Japan



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and other developed countries. If we fail to sell our products through our international distributors, we would
experience a decline in revenues unless we begin to sell our products directly in those markets. We cannot be certain that we will be able to attract new international distributors to market our products effectively or provide timely and
cost-effective customer support and service. Even if we are successful in selling our products through new distributors, the rate of growth of our revenue could be harmed if our existing distributors do not continue to sell a large dollar volume of
our products. None of our existing distributors are obligated to continue selling our products.

We may be subject to foreign laws
governing our relationships with our international distributors. These laws may require us to make payments to our distributors if we terminate our relationship for any reason, including for cause. Some countries require termination payments under
local law or legislation that may supersede our contractual relationship with the distributor. These payments could be equal to a year or more of gross profit on sales of our products that the distributor would have earned. We have terminated our
relationship with certain distributors in the past. To date, we have not been required to make any material termination payments under local laws. Any required payments would adversely affect our operating results.

In order to accurately recognize revenue on long-term development and implementation contracts associated with our Neometrics newborn screening data management
systems, we must be able to accurately estimate the total cost of completing a project. In arriving at these estimates, we must make assumptions about future costs that may prove to be inaccurate

We recognize revenue from our Neometrics newborn screening data management systems, which are generally highly configurable, on the percentage of
completion basis over the development and implementation period of the associated installation. The development and implementation period typically ranges from six to nine months. In order to determine percentage of completion, we must be able to
accurately estimate the total cost of the development and implementation process. If our estimates of the future costs to be incurred are understated, our future gross profit would be negatively impacted, and the impact could be material to our
results of operations.

Our operating results may suffer because of foreign currency exchange rate fluctuations and may require us to engage in foreign
currency hedging

Substantially all of our sales contracts to our U.S. based customers provide for payment in U.S. dollars. In addition,
sales to most of our international distributors provide for payment in U.S. dollars. However, substantially all of the revenue and expenses of our foreign subsidiaries are denominated in the applicable foreign currency. To date we have not
undertaken any foreign currency hedging transactions and, as a result, our future revenue and expenses may be unpredictable due to exchange rate fluctuations that could result in foreign exchange gains and losses associated with the translation of
assets denominated in foreign currencies.

If health care providers are not adequately reimbursed for procedures conducted with our devices or supplies,
or if reimbursement policies change adversely, we may not be successful marketing and selling new products or technologies

Clinicians,
hospitals and government agencies are unlikely to purchase our products if clinicians are not adequately reimbursed for the procedures conducted with our devices or supplies. Unless a sufficient amount of conclusive, peer-reviewed clinical data
about our products has been published, third-party payors, including insurance companies and government agencies, may refuse to provide reimbursement. Furthermore, even if reimbursement is provided, it may not be adequate to fully compensate the
clinicians or hospitals. Some third-party payors may refuse adequate reimbursement unless the infant has demonstrable risk factors. If health care providers cannot obtain sufficient reimbursement from third-party payors for our products or the
screenings conducted with our products, it is unlikely that our products will ever achieve significant market acceptance. Acceptance of our products in international markets will depend upon the availability of adequate reimbursement or funding
within prevailing health care payment systems. Reimbursement, funding and health care payment systems vary significantly by country. We may not obtain approvals for reimbursement in a timely manner or at all.

Adverse changes in reimbursement policies in general could harm our business. We are unable to predict changes in the reimbursement methods used by
third-party health care payors, particularly those in countries and regions outside the U.S. For example, some payors are moving toward a managed care system in which providers contract to provide



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comprehensive health care for a fixed cost per person. In a managed care system the cost of our products may not be
incorporated into the overall payment for childbirth and newborn care or there may not be adequate reimbursement for our products separate from reimbursement for the procedure. Unless the cost of screening or treatment is reimbursed as a standard
component of newborn care, universal screening is unlikely to occur and the number of infants likely to be screened with our products will be substantially reduced.

If we lose our relationship with any supplier of key product components or our relationship with a supplier deteriorates or key components are not available in sufficient quantities, our manufacturing could be
delayed and our business could suffer

We contract with third parties for the supply of some of the components used in our products and
the production of our disposable products. Some of our suppliers are not obligated to continue to supply us. We have relatively few sources of supply for some of the components used in our products and in some cases we rely entirely on sole-source
suppliers. In addition, the lead-time involved in the manufacturing of some of these components can be lengthy and unpredictable. For example, during 2002, we experienced delays on the part of a supplier to provide us with volume production of our
Flexicoupler supplies, and in 2005, we relied on a single supplier of cables used in our ALGO hearing screening devices to help us complete a field replacement program of those cables. If these or other suppliers become unwilling or unable to supply
us with components meeting our requirements, it might be difficult to establish additional or replacement suppliers in a timely manner, or at all. This would cause our product sales to be disrupted and our revenue and operating results to suffer.

Replacement or alternative sources might not be readily obtainable due to regulatory requirements and other factors applicable to our
manufacturing operations. Incorporation of components from a new supplier into our products may require a new or supplemental filing with applicable regulatory authorities and clearance or approval of the filing before we could resume product sales.
This process may take a substantial period of time, and we may not be able to obtain the necessary regulatory clearance or approval. This could create supply disruptions that would harm our product sales and operating results.

Our sales efforts through group purchasing organizations and sales to high volume purchasers may reduce our average selling prices, which would reduce our revenue and
gross profits from these sales

We have entered, and may in the future enter, into agreements with customers who purchase high volumes
of our products. Our agreements with these customers may contain discounts from our normal selling prices and other special pricing considerations, which could cause our revenue and profits to decline. In addition, we have entered into agreements to
sell our products to members of group purchasing organizations, or GPOs, which negotiate volume purchase prices for medical devices and supplies for member hospitals, group practices and other clinics. While we make sales directly to GPO members,
the GPO members receive volume discounts from our normal selling price and may receive other special pricing considerations from us. Sales to members of one GPO, Novation LLC, accounted for approximately 15%, 20%, and 22%, of our total revenue in
the twelve months ended December 31, 2005, 2004 and 2003, respectively. Sales to members of GPOs accounted for approximately 28%, 46%, and 39% of our total revenue during the 12 months ended December 31, 2005, 2004, and 2003, respectively.
Other of our existing customers may be members of GPOs with which we do not have agreements. Our sales efforts through GPOs may conflict with our direct sales efforts to our existing customers. If we enter into agreements with new GPOs and some of
our existing customers begin purchasing our products through those GPOs, our revenue and profits could decline.

If material weaknesses in the adequacy
of our internal control over financial reporting are identified and reported as a result of the assessment required by Section 404 of the Sarbanes-Oxley Act of 2002, investors could lose confidence in the reliability of our financial statements

As directed by Section 404 of the Sarbanes-Oxley Act of 2002, the Securities and Exchange Commission adopted rules requiring
public companies to include a report of management on the companys internal control over financial reporting in their annual reports on Form 10-K, and the first such report of our management is contained in our Annual Report on Form 10-K for
the year ended December 31, 2005.

While we have expended significant resources in developing the necessary documentation and testing
procedures required by Section 404, there is a risk that in the future we will not comply with all of the requirements imposed by



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Section 404. If we do not continue to maintain an effectively designed and operating system of internal control, we
may be unable to comply with the requirements of Section 404 in the future. This could result in an adverse reaction in the financial markets due to a loss of confidence in the reliability of our financial statements.

Our ability to market and sell products depends upon receipt of domestic and foreign regulatory approval of our products and manufacturing operations. Our failure to
obtain or maintain regulatory approvals and compliance could negatively affect our business

Our products and manufacturing operations
are subject to extensive regulation in the United States by the Food and Drug Administration, or the FDA, and by similar regulatory agencies in many other countries in which we do business. Unless an exemption applies, each medical device that we
propose to market in the U.S. must first receive one of the following types of FDA premarket review authorizations:



| |  |  | Clearance via Section 510(k) of the Food, Drug, and Cosmetics Act of 1938, as amended; or
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | Premarket approval via Section 515 of the Food, Drug, and Cosmetics Act if the FDA has determined that the medical device in question poses a greater risk of injury.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------

The FDAs 510(k) clearance process usually takes from three to 12 months, but can take longer. The process of obtaining
premarket approval via Section 515 is much more costly, lengthy and uncertain. Premarket approval generally takes from one to three years, but can take even longer. The FDA may not grant either 510(k) clearance or premarket approval for any
product we propose to market. Furthermore, if the FDA concludes that future products using our technology do not meet the requirements to obtain 510(k) clearance, we would have to seek premarket approval via Section 515. The FDA may impose the
more burdensome premarket approval requirement on modifications to our existing products or future products, which in either case could be costly and cause us to divert our attention and resources from the development of new products or the
enhancement of existing products.

Domestic regulation of our products and manufacturing operations, other than that which is administered
by the FDA, includes the Environmental Protection Act, the Occupational Safety and Health Act, and state and local counterparts to these acts.

Our
business may suffer if we are required to revise our labeling or promotional materials, or the FDA takes an enforcement action against us for off-label uses

We are prohibited by the FDA from promoting or advertising our medical device products for uses not within the scope of our clearances or approvals, or from making unsupported promotional claims about the benefits of
our products. If the FDA determines that our claims are outside the scope of our clearances, or are unsupported, it could require us to revise our promotional claims or take enforcement action against us. If we were subject to such an action by the
FDA, our sales could be delayed, our revenue could decline, and our reputation among clinicians could be harmed.

Our business would be harmed if the
FDA determines that we have failed to comply with applicable regulations or we do not pass an inspection

We are subject to inspection
and market surveillance by the FDA concerning compliance with pertinent regulatory requirements. If the FDA finds that we have failed to comply with these requirements, the Agency can institute a wide variety of enforcement actions, ranging from a
public warning letter to more severe sanctions such as:



| |  |  | Fines, injunctions and civil penalties;
| | - |  | ---------------------------------------



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



| |  |  | Issuance of public notices or warnings;
| | - |  | ---------------------------------------



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



| |  |  | Refusal of our requests for 510(k) clearance or premarket approval of new products;
| | - |  | -----------------------------------------------------------------------------------



| |  |  | Withdrawal of 510(k) clearance or premarket approvals already granted; or
| | - |  | -------------------------------------------------------------------------



| |  |  | Criminal prosecution.
| | - |  | ---------------------



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If we fail to obtain and maintain necessary foreign regulatory approvals in order to market and sell our products
outside of the U.S., we may not be able to sell our products in other countries

Our products that are regulated domestically by the FDA
are also regulated outside the U.S. by foreign governmental agencies similar to the FDA and are subject to regulatory requirements similar to those of the FDA. The time and cost required to obtain market authorization from other countries and the
requirements for licensing a product in another country may differ significantly from FDA requirements. We may not be able to obtain these approvals without incurring significant expenses or at all, and we may not be able to maintain these approvals
once they have been obtained.

If we, or our suppliers, fail to comply with applicable regulations, sales of our products could be delayed and our
revenue could be harmed

Every manufacturer of a finished medical device, including Natus and some of our contract manufacturers and
suppliers, is required to demonstrate and maintain compliance with the FDAs quality system regulation and comparable regulations of states and other countries. The FDA enforces the quality system regulation through periodic inspections. We, or
our contract manufacturers, may fail to pass future quality system regulation inspections. If we, or our contract manufacturers, fail one of these inspections in the future, our operations could be disrupted and our manufacturing and sales delayed
significantly until we can demonstrate adequate compliance. If we or our contract manufacturers fail to take adequate corrective action in a timely fashion in response to a quality system regulation inspection, the FDA could shut down our or our
contract manufacturers manufacturing operations or require us, among other things, to recall our products, either of which would harm our business.

Governmental, environmental, health and safety regulations could adversely affect our operations

Our operations are subject
to complex and stringent environmental, health, safety and other governmental laws and regulations. Existing laws and regulations may be revised or reinterpreted, or new laws and regulations may become applicable to us, that may have a negative
effect on our business and results of operations.

We may not be successful in integrating the businesses that we acquire, or such businesses may not be
accretive to earnings or perform as projected

We acquired intellectual property assets and technology patents from Pemstar Pacific
Consultants during 2002; we acquired the assets of Neometrics Inc. and affiliated entities during 2003; we acquired Fischer-Zoth in 2004; and we acquired Bio-logic in early 2006. We expect to make additional acquisitions of products, technology
assets or businesses in the future as part of our efforts to increase revenue and expand our product offerings. In addition to direct costs, acquisitions pose a number of risks, including:



| |  |  | Inability to effectively integrate acquired products into our business;
| | - |  | -----------------------------------------------------------------------



| |  |  | Loss of key personnel of the acquired company;
| | - |  | ----------------------------------------------



| |  |  | Failure to realize expected synergies;
| | - |  | --------------------------------------



| |  |  | Failure of acquired products to achieve projected sales;
| | - |  | --------------------------------------------------------



| |  |  | Failure to maintain customers of, or other relationships existing with respect to, the acquired business;
| | - |  | ---------------------------------------------------------------------------------------------------------



| |  |  | Failure to successfully develop the acquired technology into the desired products or enhancements;
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | Assumption of unknown liabilities;
| | - |  | ----------------------------------



| |  |  | Failure to understand and compete effectively in markets and with products or technologies with which we have limited previous experience; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Write-off of goodwill and intangible assets related to such acquisitions.
| | - |  | -------------------------------------------------------------------------



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Our acquisitions of products, technology assets, or businesses may have a negative impact on our business
if we fail to achieve the anticipated financial, strategic, and other benefits of acquisitions or investments, and our operating results may suffer because of this.

Future changes in technology or market conditions could result in adjustments to our recorded asset balance for intangible assets, resulting in additional charges that could significantly impact our operating
results

At December 31, 2005, we had significant intangible assets, including goodwill and other acquired intangible assets. As a
result of our acquisition of Bio-logic in January 2006, these assets have increased significantly. The determination of related estimated useful lives and whether these assets are impaired involves significant judgments. Our ability to accurately
predict future cash flows related to these intangible assets might be hindered by events over which we have no control. Due to the highly competitive nature of the medical device industry, new technologies could impair the value of our intangible
assets if they create market conditions where our products are no longer competitive. Any future determination that these assets are carried at greater than their fair value could result in additional charges, which could significantly impact our
operating results.

We may not be able to preserve the value of our intellectual property because we may not be able to protect access to our
intellectual property or we may lose our intellectual property rights due to expiration of our licenses or patents

If we fail to
protect our intellectual property rights or if our intellectual property rights do not adequately cover the technology we employ, other medical device companies could sell products with features similar to ours, and this could reduce demand for our
products. We protect our intellectual property through a combination of patent, copyright, trade secret and trademark laws. Despite our efforts to protect our proprietary rights, others may attempt to copy or otherwise improperly obtain and use our
products or technology. Policing unauthorized use of our technology is difficult and expensive, and we cannot be certain that the steps we have taken will prevent misappropriation. Our means of protecting our proprietary rights may be inadequate.
Enforcing our intellectual property rights could be costly and time consuming and may divert our managements attention and resources. Failing to enforce our intellectual property rights could also result in the loss of those rights.

Our operating results would suffer if we were subject to a protracted infringement claim or a significant damage award

The medical technology industry has, in the past, been characterized by a substantial amount of litigation and related administrative proceedings
regarding patents and intellectual property rights. We expect that medical screening products may become increasingly subject to third-party infringement claims as the number of competitors in our industry segment grows and the functionality of
products in different industry segments overlaps. Third parties such as individuals, educational institutions or other medical device companies may claim that we infringe their intellectual property rights. Any claims, with or without merit, could
have any of the following negative consequences:



| |  |  | Result in costly litigation and damage awards;
| | - |  | ----------------------------------------------



| |  |  | Divert our managements attention and resources;
| | - |  | ------------------------------------------------



| |  |  | Cause product shipment delays or suspensions; or
| | - |  | ------------------------------------------------



| |  |  | Require us to seek to enter into royalty or licensing agreements.
| | - |  | -----------------------------------------------------------------

A successful claim of infringement against us could result in a substantial damage award and materially harm our financial condition. Our failure or inability to license the infringed or similar technology, or design and build
non-infringing products, could prevent us from selling our products and adversely affect our business and financial results.

Product liability suits
against us could result in expensive and time consuming litigation, payment of substantial damages and an increase in our insurance rates

The sale and use of our products could lead to the filing of a product liability claim by someone claiming to have been injured using one of our products or claiming that one of our products failed to perform properly. A product



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liability claim could result in substantial damages and be costly and time consuming to defend, either of which could
materially harm our business or financial condition. Our product liability insurance may not protect our assets from the financial impact of defending a product liability claim. Any product liability claim brought against us, with or without merit,
could increase our product liability insurance rates or prevent us from securing any coverage in the future.

We license intellectual property rights
from third parties and would be adversely affected if our licensors do not appropriately defend their proprietary rights or if we breach any of the agreements under which we license commercialization rights to products or technology from others

We license rights from third parties for products and technology that are important to our business. If our licensors are unsuccessful
in asserting and defending their proprietary rights, including patent rights and trade secrets, we may lose the competitive advantages we have through selling products that we license from third parties. Additionally, if it is found that our
licensors infringe on the proprietary rights of others, we may be prohibited from marketing our existing products that incorporate those proprietary rights. Under our licenses, we are subject to commercialization and development, sublicensing,
royalty, insurance and other obligations. If we fail to comply with any of these requirements, or otherwise breach a license agreement, the licensor may have the right to terminate the license in whole or to terminate the exclusive nature of the
license.

We depend upon key employees in a competitive market for skilled personnel, and, without additional employees, we cannot grow or maintain
profitability

Our products and technologies are complex, and we depend substantially on the continued service of our senior management
team. The loss of any of our key employees could adversely affect our business and slow our product development process. Our future success also will depend, in part, on the continued service of our key management personnel, software engineers, and
other research and development employees and our ability to identify, hire, and retain additional personnel, including customer service, marketing, and sales staff. Hiring research and development, engineering, sales, marketing and customer service
personnel in our industry is very competitive due to the limited number of people available with the necessary technical skills and understanding of pediatric audiology, neonatal jaundice management, and neonatal metabolic screening. We may be
unable to attract and retain personnel necessary for the development of our business.

We could lose the ability to use net operating loss
carryforwards, which may adversely affect our financial results

U.S. income tax law imposes limitations on the ability of corporations
to use net operating loss carryforwards if the corporation experiences a more than 50% change in ownership during any three-year period. We may take actions, such as the issuance of additional stock, which would cause an ownership change to occur.
Accordingly, we may be limited to the amount of our tax loss carryforwards we can use in any given year, so even if we have substantial net income, we may not be able to use our net operating loss carryforwards before they expire. In addition, the
net operating loss carryforwards are subject to examination by the Internal Revenue Service (IRS), and are thus subject to adjustment or disallowance resulting from any such IRS examination.

During the second quarter of 2006 we completed a formal study to determine whether and the extent to which any of our tax loss and credit carryforwards
will be limited. Based on the results of that study, we determined that approximately $650,000 of federal tax loss carryforwards existing as of December 31, 2005 will be limited.

As of December 31, 2005, we had total federal and state net operating loss carryforwards of approximately $19.7 million and $7.0 million,
respectively, available to reduce future taxable income. These net operating loss carryforwards, if not utilized to offset taxable income in future periods, will expire in various amounts beginning in 2008 through 2025 for state and/or federal
income tax purposes. If we have net tax losses in the future, we may not be able to utilize some or all of our net operating loss carryforwards before they expire.

If we are unable to fully utilize our net operating loss carryforwards, our future tax payments could be higher and our financial condition may suffer.



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Our stockholder rights plan and anti-takeover provisions in our charter documents and under Delaware law may make it
more difficult to acquire a large portion of our securities, to initiate a tender offer or a proxy contest, or to acquire us, even though such events may be beneficial to our stockholders

We maintain a stockholder rights plan that is designed to deter unsolicited takeover activity with respect to our Company. In addition, provisions of our
restated certificate of incorporation, bylaws, and Delaware law, including provisions providing for a staggered board of directors, could make it more difficult for a third party to remove our management. Further, these provisions may make it more
difficult to acquire a large portion of our securities to initiate a tender offer or a proxy contest or acquire us, even if doing so would benefit our stockholders.

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds

Not applicable

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

On June 15, 2006, we held our Annual
Meeting of Stockholders. We solicited votes by proxy pursuant to proxy solicitation materials first distributed to our stockholders on or about May 10, 2006. The following is a brief description of the matters voted on at the meeting and a
statement of the number of votes cast for, against or withheld and the number of abstentions:

1. Election of Doris Engibous and
William M. Moore directors until the Annual Meeting of Stockholders in 2009 or until their successors are elected.



|                 |  |            |  |          
|---------------- |  | ---------- |  | ---------
|Nominee          |  | In Favor   |  | Withheld 
|Doris Engibous   |  | 17,538,233 |  | 107,779  
|William M. Moore |  | 13,546,938 |  | 4,099,074

2. The ratification of the appointment of Deloitte & Touche LLP as independent
public accountants of the Company for the year ending December 31, 2006:



|           |  |           |  |        
|---------- |  | --------- |  | -------
|For        |  | Against   |  | Abstain
|14,110,237 |  | 3,520,816 |  | 14,959 

Other directors whose terms of office as Directors continued after the meeting are:



|                 |  |             
|---------------- |  | ------------
|Director         |  | Term Expires
|Robert A. Gunst  |  | 2007        
|James B. Hawkins |  | 2007        
|Kenneth Ludlum   |  | 2008        
|Mark D. Michael  |  | 2008        

ITEM 6. Exhibits

(a) Exhibits



|            |  |                                                                                                                                                                                      |  |                           |  |             |  |           |  |          
|----------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | ------------------------- |  | ----------- |  | --------- |  | ---------
|            |  |                                                                                                                                                                                      |  | Incorporated By Reference
|Exhibit No. |  | Exhibit                                                                                                                                                                              |  | Filing                    |  | Exhibit No. |  | File No.  |  | File Date
|10.1        |  | Amendment No. 2 to Credit Agreement dated as of January 4, 2006 by and between Natus Medical Incorporated and Wells Fargo Bank, National Association                                 |  | 8-K                       |  | 10.01       |  | 000-33001 |  | 6/14/06  
|            |  |                                                                                                                                                                                      |  |                           | 
|10.2        |  | Form of Restricted Stock Purchase Agreement under the Amended and Restated 2000 Stock Awards Plan                                                                                    |  |                           |  |             |  |           |  |          
|            |  |                                                                                                                                                                                      |  |                           | 
|10.3        |  | 2000 Director Stock Option Plan as amended through June 15, 2006                                                                                                                     |  |                           |  |             |  |           |  |          
|            |  |                                                                                                                                                                                      |  |                           | 
|31.1        |  | Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                                                               |  |                           |  |             |  |           |  |          
|            |  |                                                                                                                                                                                      |  |                           | 
|31.2        |  | Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                                                               |  |                           |  |             |  |           |  |          
|            |  |                                                                                                                                                                                      |  |                           | 
|32.1        |  | Certification of Principal Executive Officer and Principal Financial Officer pursuant to 18 U.S.C. Section 1350 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.



|                      |  |                            |  |                                                                                                                  
|--------------------- |  | -------------------------- |  | -----------------------------------------------------------------------------------------------------------------
|                      |  | NATUS MEDICAL INCORPORATED
|                      |  |                           
|Dated: August 9, 2006 |  | By:                        |  | /S/    JAMES B.
HAWKINS                                                                                          
|                      |  |                            |  | James B. Hawkins                                                                                                 
|                      |  |                            |  | President and Chief Executive Officer (Principal Executive Officer)                                              
|                      |  |                           
|Dated: August 9, 2006 |  | By:                        |  | /S/    STEVEN J.
MURPHY                                                                                          
|                      |  |                            |  | Steven J. Murphy, Vice President Finance and Chief Financial Officer (Principal Financial and Accounting
Officer)



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NATUS MEDICAL INCORPORATED

INDEX TO EXHIBITS



|            |  |                                                                                                                                                                                      |  |                           |  |             |  |           |  |           
|----------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | ------------------------- |  | ----------- |  | --------- |  | ----------
|            |  |                                                                                                                                                                                      |  | Incorporated By Reference
|Exhibit No. |  | Exhibit                                                                                                                                                                              |  | Filing                    |  | Exhibit No. |  | File No.  |  | File Date 
|10.1        |  | Amendment No. 2 to Credit Agreement dated as of January 4, 2006 by and between Natus Medical Incorporated and Wells Fargo Bank, National Association                                 |  | 8-K                       |  | 10.01       |  | 000-33001 |  | 06/14/2006
|            |  |                                                                                                                                                                                      |  |                           | 
|10.2        |  | Form of Restricted Stock Purchase Agreement under the Amended and Restated 2000 Stock Awards Plan                                                                                    |  |                           |  |             |  |           |  |           
|            |  |                                                                                                                                                                                      |  |                           | 
|10.3        |  | 2000 Director Stock Option Plan as amended through June 15, 2006                                                                                                                     |  |                           |  |             |  |           |  |           
|            |  |                                                                                                                                                                                      |  |                           | 
|31.1        |  | Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                                                               |  |                           |  |             |  |           |  |           
|            |  |                                                                                                                                                                                      |  |                           | 
|31.2        |  | Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                                                               |  |                           |  |             |  |           |  |           
|            |  |                                                                                                                                                                                      |  |                           | 
|32.1        |  | Certification of Principal Executive Officer and Principal Financial Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 |  |                           |  |             |  |           |  |           



44