PDF Solutions Reports First Quarter 2007 Results

Total Quarterly Revenue Exceeds $20 Million


SAN JOSE, Calif., April 25, 2007 (PRIME NEWSWIRE) -- PDF Solutions, Inc. (Nasdaq:PDFS) the leading provider of process-design integration technologies to enhance IC manufacturability, today announced financial results for its first fiscal quarter ended March 31, 2007.

Revenue for the first fiscal quarter of 2007 totaled $22.1 million, an increase of 12%, compared with revenue of $19.9 million for the first fiscal quarter of 2006. Gain share revenue for the first fiscal quarter of 2007 totaled $4.9 million, compared to $5.0 million for the first fiscal quarter of 2006. On a GAAP basis, net loss for the first fiscal quarter of 2007 totaled approximately $2.4 million, or $0.08 per basic share, compared with net income of $268,000, or $0.01 per diluted share, for the first fiscal quarter of 2006.

In addition to using GAAP results in evaluating PDF Solutions' business, management also believes it is useful to measure results using a non-GAAP measure of net income, which excludes stock-based compensation expense, amortization of acquired intangible assets and their related income tax effects. Using this non-GAAP measure, net income for the first fiscal quarter of 2007 totaled approximately $3.9 million, or $0.14 per diluted share, compared with non-GAAP net income of approximately $3.3 million, or $0.12 per diluted share, for the first fiscal quarter of 2006.

As previously announced, PDF will hold a live conference call beginning at 3:00 p.m. Pacific Time/6:00 p.m. Eastern Time today to discuss these results. A live web cast of this conference call will be available on PDF Solutions' website at http://ir.pdf.com/medialist.cfm. A web cast replay will be available at the same website address beginning approximately two hours after completion of the live call. Further, a copy of this press release, including the disclosure and reconciliation of certain non-GAAP financial measures to the comparable GAAP measure, which non-GAAP measures may be used periodically by PDF Solutions' management when discussing financial results with investors and analysts, will be available on PDF Solutions' website at http://www.pdf.com/news_archive.phtml following the date of this release.

Information Regarding Use of Non-GAAP Financial Measures

In addition to providing results that are determined in accordance with Generally Accepted Accounting Principles in the United States of America (GAAP), PDF Solutions also provides certain non-GAAP financial measures that exclude the effects of stock-based compensation expense, amortization of acquired intangible assets, and their related income tax effects. PDF Solutions' management believes that the presentation of these measures provides useful supplemental information to investors regarding PDF's operating results. These non-GAAP financial measures are used by management internally to measure the company's profitability and performance. PDF's management believes that excluding the effects of stock-based compensation expense, amortization of acquired intangible assets, and their related income tax effects, provides a useful supplemental measure of the company's ongoing operations in light of the fact that neither category of expense has a current effect on the future uses of cash nor do they have use with regards to the generation of current or future revenues. These non-GAAP results should not be considered an alternative to, or a substitute for, GAAP financial information, and may be different from similarly titled non-GAAP measures used by other companies. In particular, these non-GAAP financial measures are not a substitute for GAAP measures of income as a measure of performance, or to cash flows from operating, investing and financing activities as a measure of liquidity. Since management uses these non-GAAP financial measures internally to measure profitability and performance, PDF has included these non-GAAP measures to give investors an opportunity to see the company's financial results as viewed by management. A reconciliation of the non-GAAP financial measures to the comparable GAAP financial measure is provided at the end of the company's financial statements presented below.

About PDF Solutions

PDF Solutions, Inc. (Nasdaq:PDFS) is a leading provider of process-design integration technologies for manufacturing integrated circuits (ICs). PDF Solutions' software, methodologies and services enable semiconductor companies to create IC designs that can be more easily manufactured using manufacturing processes that are more capable. By simulating deep sub-micron product and process interactions, the PDF solution offers clients reduced time to market, increased IC yield and performance, and enhanced product reliability and profitability. PDF Solutions also offers the industry leading Yield Management System (YMS) software, dataPOWER(r), and Fault Detection and Classification (FDC) software, Maestria(r), to enhance yield improvement and production control activities at leading fabrication facilities around the world. Headquartered in San Jose, Calif., PDF Solutions operates worldwide with additional offices in Europe, Japan and China. For more information, visit www.pdf.com.

The PDF Solutions, Inc. logo is available at http://www.primenewswire.com/newsroom/prs/?pkgid=3199

DataPOWER, Maestria and PDF Solutions are registered trademarks of PDF Solutions, Inc.



                          PDF SOLUTIONS, INC.
           CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)
                            (In thousands)

                                               March 31,   December 31,
                                              ---------      ---------
                                                 2007           2006
                                              ---------      ---------
                  ASSETS

 Current assets:
   Cash and cash equivalents                  $  32,083      $  36,451
   Short-term investments                        18,419         16,402
   Accounts receivable, net of allowances        35,099         27,575
   Prepaid expenses and other current assets      2,720          2,796
   Deferred tax assets                            3,087          2,581
                                              ---------      ---------
      Total current assets                       91,408         85,805
 Property and equipment, net                      3,742          3,916
 Goodwill                                        60,997         60,034
 Intangible assets, net                          11,004         13,605
 Deferred tax assets                              6,603          4,994
 Other assets                                       533            503
                                              ---------      ---------
      Total assets                            $ 174,287      $ 168,857
                                              =========      =========

   LIABILITIES AND STOCKHOLDERS' EQUITY

 Current liabilities:
    Current portion of long-term debt         $     289      $     302
    Accounts payable                              2,554          3,182
    Accrued compensation and related benefits     5,364          3,325
    Other accrued liabilities                     2,283          3,843
    Taxes payable                                 1,533          4,767
    Deferred revenues                             6,572          3,705
    Billings in excess of recognized revenue        888             95
                                              ---------      ---------
       Total current liabilities                 19,483         19,219
 Long-term debt                                   1,173          1,198
 Long-term taxes payable                          4,757             --
 Other liabilities                                  177            221
                                              ---------      ---------
        Total liabilities                        25,590         20,638
                                              ---------      ---------

 Stockholders' equity:
      Common stock                                    4              4
      Additional paid-in-capital                169,580        167,323
      Treasury stock, at cost                    (5,549)        (5,549)
      Accumulated deficit                       (16,774)       (13,890)
      Accumulated other comprehensive income      1,436            331
                                              ---------      ---------
        Total stockholders' equity              148,697        148,219
                                              ---------      ---------
        Total liabilities and stockholders'
         equity                               $ 174,287      $ 168,857
                                              =========      =========

                          PDF SOLUTIONS, INC.
      CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)
               (In thousands, except per share amounts)

                                                 Three Months Ended
                                                --------------------
                                                      March 31,
                                                  2007        2006
                                                --------    --------

 Revenue:
   Design-to-silicon-yield solutions:
     Integrated solutions                       $ 13,764    $ 12,229
     Software licenses                             3,485       2,612
   Gain share                                      4,893       5,016
                                                --------    --------
     Total revenue                                22,142      19,857
                                                --------    --------
 Cost and expenses:
   Cost of design-to-silicon-yield solutions:
     Direct costs of design-to-silicon-yield
      solutions:
     Integrated solutions                          7,708       6,429
     Software licenses                                59          11
   Amortization of acquired core technology        1,575       1,266
   Research and development                        8,370       6,256
   Selling, general and administrative             5,844       4,956
   Amortization of other acquired intangible
     assets                                        1,013         235
                                                --------    --------
     Total costs and expenses                     24,569      19,153
                                                --------    --------

 Income (loss)from operations                     (2,427)        704
 Interest and other income, net                      496         635
                                                --------    --------
 Income (loss) before taxes                       (1,931)      1,339

 Tax provision                                       424       1,071
                                                --------    --------
 Net income (loss)                              $ (2,355)   $    268
                                                ========    ========

 Net income (loss) per share:
   Basic                                        $  (0.08)   $   0.01
                                                ========    ========
   Diluted                                      $  (0.08)   $   0.01
                                                ========    ========
 Weighted average common shares:
   Basic                                          27,980      26,542
                                                ========    ========
   Diluted                                        27,980      28,223
                                                ========    ========



                           PDF SOLUTIONS, INC.
                    IMPACT of NON-GAAP ADJUSTMENTS ON
                 REPORTED NET INCOME (LOSS) (UNAUDITED)
                (In thousands, except per share amounts)

                                      Three Months Ended
                                         March 31, 2007
                             -----------------------------------------
                                    As
                                 reported    Adjustments    Non-GAAP
                                 --------    -----------    --------
 Revenue:
   Design to-silicon-yield
    solutions:
     Integrated solutions         $13,764                   $13,764
     Software licenses              3,485                     3,485
   Gain share                       4,893                     4,893
                                  -------    -------        -------
     Total revenue                 22,142         --         22,142
                                  -------    -------        -------

 Cost of design-to-silicon-
   yield solutions:
   Direct cost of design-to-
     silicon-yield
     solutions:
     Integrated solutions           7,708       (493)(a)      7,215
     Software licenses                 59                        59
   Amortization of acquired
     core technology                1,575     (1,575)(b)         --
 Research and development           8,370       (562)(a)      7,808
 Selling, general and
   administrative                   5,844       (782)(a)      5,062
 Amortization of other acquired
   intangible assets                1,013     (1,013)(b)         --
                                  -------    -------        -------
   Total costs and expenses        24,569     (4,425)        20,144
                                  -------    -------        -------


 Income (loss)  from operations    (2,427)     4,425          1,998
 Interest and other income            496                       496
                                  -------    -------        -------
 Income (loss) before taxes        (1,931)     4,425          2,494


 Tax provision (benefit)              424     (1,810)(a,b)   (1,386)
                                  -------    -------        -------
 Net income (loss)                $(2,355)   $ 6,235        $ 3,880
                                  =======    =======        =======

 Net income (loss) per share
   - diluted                      $ (0.08)   $  0.22        $  0.14
                                  =======    =======        =======
 Weighted average common shares
   - diluted                       27,980     28,590         28,590(c)
                                  =======    =======        =======

                          PDF SOLUTIONS, INC.
                   IMPACT of NON-GAAP ADJUSTMENTS ON
                REPORTED NET INCOME (LOSS) (UNAUDITED)
               (In thousands, except per share amounts)

                                        Three Months Ended
                                          March 31, 2006
                             -----------------------------------------
                                     As
                                  reported   Adjustments    Non-GAAP
                                  --------   -----------    --------
 Revenue:
   Design to-silicon-yield
     solutions:
     Integrated solutions           $12,229                 $12,229
     Software licenses                2,612                   2,612
   Gain share                         5,016                   5,016
                                    -------   -------       -------
     Total revenue                   19,857        --        19,857
                                    -------   -------       -------
 Cost and expenses:
   Cost of design-to-silicon
     -yield solutions:
   Direct cost of design-to-
     silicon-yield solutions:
     Integrated solutions             6,429      (621)(a)     5,808
     Software licenses                   11                      11
     Amortization of acquired
       core technology                1,266    (1,266)(b)        --
   Research and development           6,256      (618)(a)     5,638
   Selling, general and
     administrative                   4,956      (929)(a)     4,027
   Amortization of other acquired
     intangible assets                  235      (235)(b)        --
                                    -------   -------       -------
   Total costs and expenses          19,153    (3,669)       15,484
                                    -------   -------       -------

   Income (loss)  from operations       704     3,669         4,373
   Interest and other income            635                     635
                                    -------   -------       -------
   Income (loss) before taxes         1,339     3,669         5,008


   Tax provision (benefit)            1,071       673(a,b)    1,744
                                    -------   -------       -------
   Net income (loss)                $   268   $ 2,996       $ 3,264
                                    =======   =======       =======

   Net income (loss) per share
     - diluted                      $  0.01   $  0.11       $  0.12
                                    =======   =======       =======
   Weighted average common
     shares - diluted                28,223    28,223        28,223
                                    =======   =======       =======
 Notes:
 (a)  The non-GAAP adjustments represent the reversal of stock-based
      compensation, net of taxes.
 (b)  The non-GAAP adjustments represent the reversal of amortization
      of intangible assets, net of taxes.
 (c) The shares used in computing non-GAAP net income for the three
     months ended March 31, 2007 and 2006 include the dilutive impact
     of common stock options.


            

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