EXHIBIT 99.2
                                                                    ------------

                                SPIRE CORPORATION
               UNAUDITED PRO FORMA COMBINED FINANCIAL INFORMATION

     The following unaudited pro forma combined statements of operations of
Spire Corporation (the "Company" or "Spire") for the three-months ended March
31, 2003 and for the year ended December 31, 2002, gives effect to the
acquisition of Bandwidth Semiconductor, LLC ("Bandwidth") as if the transaction
had occurred on January 1, 2002.


     The accompanying unaudited pro forma combined financial information
reflects Spire's acquisition of Bandwidth pursuant to a Purchase Agreement,
effective May 23, 2003. In accordance with Statement of Financial Accounting
Standards No. 141, Business Combinations, and Statement of Financial Accounting
Standards No. 142, Goodwill and Other Intangible Assets, Spire used the purchase
method of accounting for a business combination to account for the acquisition
as well as the related accounting and reporting regulations for goodwill and
other intangibles. Under these methods of accounting, the assets and liabilities
of Bandwidth were recorded at their respective fair values. The financial
position, results of operations and cash flows of Bandwidth are included in
Spire's financial statements prospectively as of the completion of the
acquisition.

     The following unaudited pro forma combined financial statements of the
Company have been prepared by management in accordance with generally accepted
accounting principles in the United States and do not reflect any operating
efficiencies and cost savings that Spire believes are achievable.


     The unaudited pro forma combined financial information is presented for
illustrative purpose only and is not necessarily indicative of the operating
results that would have occurred if the acquisition had been consummated at the
beginning of the periods presented, nor is it necessarily indicative of future
operating results. The pro forma adjustments are based upon available
information and upon certain assumptions described in the notes to the unaudited
pro forma combined financial statements that Spire management believes are
reasonable in the circumstances. The accompanying condensed combined pro forma
financial information should be read in conjunction with the historical
consolidated financial statements and accompanying notes thereto of Spire
included in its Annual Report on Form 10-KSB for the year ended December 31,
2003 and Bandwidth financial statements included elsewhere herein.
























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                                SPIRE CORPORATION
                   PRO FORMA COMBINED STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 2002


                                                Spire           Bandwidth         Pro Forma
                                             Corporation       Semiconductor     Adjustments         Note        Pro Forma
                                             ------------      ------------      ------------       ------      ------------
                                                                                                                 (Unaudited)
                                                                                                    
Sales and revenues                           $ 14,822,209      $  2,203,993      $    (52,300)         C        $ 16,973,902
                                             ------------      ------------      ------------                   ------------
Cost of sales                                  10,624,474         3,820,978           839,447        A,C,D        15,284,899


Research and development                          337,034           655,416           143,954          A           1,136,404

Selling, general and administrative             5,775,412         1,906,865            20,565          A           7,702,842
                                             ------------      ------------      ------------                   ------------
                                               16,736,920         6,383,259         1,003,966                     24,124,145
Total costs and expenses
                                             ------------      ------------      ------------                   ------------
Loss from operations                           (1,914,711)       (4,179,266)       (7,150,243)
                                                                                                                  (1,056,266)

Interest income (expense), net                     18,433          (426,483)         (250,292)        A,B           (658,342)

Gain on sale of license and fixed assets        4,464,929            50,043              --                        4,514,972
                                             ------------      ------------      ------------                   ------------
Net earnings (loss) before tax                  2,568,651        (4,555,706)       (3,293,613)
                                                                                                                  (1,306,558)

Income tax expense                               (332,000)             --             332,000          E                --
                                             ------------      ------------      ------------                   ------------

Net earnings (loss)                          $  2,236,651      $ (4,555,706)     $   (974,558)                  $ (3,293,613)
                                             ============      ============      ============                   ============





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                                SPIRE CORPORATION
                   PRO FORMA COMBINED STATEMENT OF OPERATIONS
                    FOR THE THREE-MONTHS ENDED MARCH 31, 2003


                                                Spire           Bandwidth         Pro Forma
                                             Corporation       Semiconductor     Adjustments         Note        Pro Forma
                                             ------------      ------------      ------------       ------      ------------
                                              (Unaudited)       (Unaudited)                                      (Unaudited)
                                                                                                    
Sales and revenues                           $  2,959,093      $    434,235      $    (14,080)        C         $  3,379,248
                                             ------------      ------------      ------------                   ------------

Cost of sales                                   2,287,068           624,651           207,622       A,C,D          3,119,341

Research and development                           96,097           112,059            35,989         A              244,145

Selling, general and administrative             1,357,066           688,520             5,141         A            2,050,727
                                             ------------      ------------      ------------                   ------------

Total costs and expenses                        3,740,231         1,425,230           248,752                      5,414,213
                                             ------------      ------------      ------------                   ------------

Loss from operations                             (781,138)         (990,995)         (262,832)                    (2,034,965)

Interest income (expense), net                      7,429           (20,129)          (62,984)       A, B            (75,684)

Gain on sale of license and fixed assets             --                --                --                             --
                                             ------------      ------------      ------------                   ------------

Net loss before tax                              (773,709)       (1,011,124)         (325,816)                    (2,110,649)

Income tax expense                                   --                --                --                             --
                                             ------------      ------------      ------------                   ------------

Net loss                                     $   (773,709)     $ (1,011,124)     $   (325,816)                  $ (2,110,649)
                                             ============      ============      ============                   ============















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                                SPIRE CORPORATION
                NOTES TO PRO FORMA COMBINED FINANCIAL STATEMENTS
 FOR THE THREE-MONTHS ENDED MARCH 31, 2003 AND THE YEAR ENDED DECEMBER 31, 2002


Note A:  Reflects the elimination of the historical depreciation expense of
         $163,957 for the year ended December 31, 2002 and $40,989 for the three
         months ended March 31, 2003 on the Hudson New Hampshire building and
         improvements and the recording of the revised depreciation expense of
         $678,079 for the year ended December 31, 2002 and $169,520 for the
         three months ended March 31, 2003 based on the net asset value under
         the capital lease over the shorter of the 5-year life of the lease or
         the assets expected useful life and the recording of interest expense
         of $230,104 for the year ended December 31, 2002 and $53,044 for the
         three months ended March 31, 2003 associated with the capital lease.

Note B:  Reflects interest expense of $20,188 for the year ended December 31,
         2002 and $9,940 for the quarter ended March 31, 2003 associated with
         the forgiveness of the Bedford, Massachusetts operating lease by Spire.

Note C:   Reflects the elimination of the intercompany sales and cost of sales
         activity between Spire and Bandwidth of $52,300 and $16,976,
         respectively, for the year ended December 31, 2002 and $14,080 and
         $6,484, respectively, for the three months ended March 31, 2003.

Note D:  Reflects the elimination of $506,820 for the year ended December 31,
         2002 and $126,705 for the three months ended March 31, 2003 of the
         sublease income recorded by Spire received from Bandwidth associated
         with the Bedford, Massachusetts sublease agreement.

Note E:  Reflects the pro forma tax effect of the proposed pro forma adjustments
         outlined above.











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