Aspen Technology Announces Financial Results for Fourth-Quarter Fiscal Year 2006 and Completion of Stock Option Review and Restatement

September 28, 2006

CAMBRIDGE, Mass.--(BUSINESS WIRE)--Sept. 28, 2006--Aspen Technology, Inc. (Nasdaq: AZPN), a leading provider of software and services to the process industries, today announced financial results for its quarter and fiscal year ended June 30, 2006.

"Our fourth quarter financial results demonstrate that we finished fiscal 2006 with strong revenue, profitability and cash flow," stated Mark Fusco, chief executive officer of AspenTech. "We were pleased that we were able to complete our internal stock option review and related restatement process and to file our Annual Report on Form 10-K with the SEC today, as previously anticipated. We remain focused on executing against our growth strategies, bringing our aspenONE solutions to market and delivering value to our customers."

Fourth Quarter Fiscal 2006 Results

For the quarter ended June 30, 2006, AspenTech reported total revenue of $79.2 million, an increase of 10% from the prior year period. Top line results were driven by license revenue of $44.4 million, which increased 20% from the prior year period. Services revenue was even with the prior year period at $34.8 million.

For the quarter ended June 30, 2006, AspenTech's income from operations, determined in accordance with generally accepted accounting principles (GAAP), was $8.3 million, or an operating margin of 11%. GAAP operating expenses in the fourth quarter fiscal 2006 included $1.7 million of non-cash stock-based compensation, $1.5 million of payroll tax-related charges resulting from the stock option review, $1.7 million of non-cash amortization of intangibles associated with previous acquisitions and $0.7 million of restructuring charges and loss on sales and disposals of assets, all of which combined to reduce the company's GAAP operating margin by approximately 700 basis points.

For the quarter ended June 30, 2005, the company reported a GAAP loss from operations of $22.8 million. GAAP operating expenses in the fourth quarter fiscal 2005 included $0.7 million of non-cash stock-based compensation, $1.8 million of non-cash amortization of intangibles associated with previous acquisitions and $17.9 million of restructuring charges and loss on sales and disposals of assets

GAAP income applicable to common shareholders was $2.9 million in the fourth quarter of fiscal 2006, compared to a loss of $30.0 million in the same period last year. GAAP income applicable to common shareholders included the impact of $3.9 million of accretion of preferred stock dividend and discount in the fourth quarter of fiscal 2006, and $3.7 million in the prior year period.

GAAP diluted income per share applicable to common shareholders was $0.05 for the quarter ended June 30, 2006, compared with a diluted loss per share applicable to common shareholders of $0.70 in the same period last year. Of note, fourth quarter fiscal 2006 GAAP earnings per share were adversely impacted by $0.03 due to payroll tax-related charges resulting from the stock option review.

As previously reported, AspenTech had cash and cash equivalents of $86.3 million at June 30, 2006, an increase of 23% compared to the end of the prior quarter, and the company remains essentially debt-free. The increase in cash was primarily the result of strong cash flow from operations during the quarter.

Full Year Fiscal 2006 Results

For the fiscal year ended June 30, 2006, AspenTech reported total revenue of $293.3 million, an increase of 9% from the prior fiscal year. Top line growth was driven by license revenue of $152.7 million, which increased 18% from the prior fiscal year. Services revenue was even with the prior fiscal year at $140.6 million.

For the fiscal year ended June 30, 2006, AspenTech's GAAP income from operations was $21.9 million, or an operating margin of 7%. GAAP operating expenses in fiscal 2006 included $6.9 million of non-cash stock-based compensation, $2.3 million of payroll tax-related charges resulting from the stock option review, $7.1 million of non-cash, amortization of intangibles associated with previous acquisitions, and $4.9 million of restructuring charges and loss on sales and disposals of assets - all of which combined to reduce the company's operating margin by approximately 700 basis points.

For the fiscal year ended June 30, 2005, AspenTech's GAAP loss from operations was $68.8 million. GAAP operating expenses in fiscal 2005 included $1.5 million of non-cash stock-based compensation, $0.2 million of payroll tax-related charges resulting from the stock option review, $7.1 million of non-cash, amortization of intangibles associated with previous acquisitions, and $39.3 million of restructuring charges and loss on sales and disposals of assets.

GAAP income applicable to common shareholders was $3.0 million in fiscal 2006, compared to a loss of $85.2 million in the prior fiscal year. GAAP income applicable to common shareholders includes the impact of $15.4 million for the accretion of preferred stock dividend and discount in fiscal 2006, and $14.5 million in the prior fiscal year.

GAAP diluted income per share applicable to common shareholders was $0.06 for the fiscal year ended June 30, 2006, compared with a diluted loss per share applicable to common shareholders of $2.01 in the prior fiscal year.

Restatement of certain prior period financials completed

As previously disclosed, in connection with the preparation of AspenTech's financial statements for the fiscal year ended June 30, 2006, a subcommittee of independent directors reviewed the company's accounting treatment for stock option grants since its initial public offering in fiscal 1995. Based upon the subcommittee's review, the Audit Committee and company management determined that certain option grants during fiscal years 1995 through 2004 were accounted for improperly, and concluded that stock-based compensation associated with the grants was misstated in fiscal years 1995 through 2005 and in the nine months ended March 31, 2006.

The restatement effects of stock-based compensation charges resulted in charges totaling $1.0 million for the nine months ended March 31, 2006, $0.5 million for the year ended June 30, 2005, and $7.2 million for the year ended June 30, 2004. The restatement also resulted in $50.1 million of charges for periods prior to fiscal 2004, which is reflected in the July 1, 2003 beginning accumulated deficit.

As previously disclosed, the restated financial statements also reflect the correction of errors relating to prior periods that were not previously recorded because the company believed they were not material either individually or in the aggregate. These adjustments increased net income by approximately $2.5 million for the first three quarters of fiscal 2006, while increasing net loss by an aggregate of $1.9 million in fiscal years 2003, 2004 and 2005.

The effects of the restatement of financial results for prior fiscal periods are described in further detail in the company's annual report on Form 10-K filed with the SEC earlier today.

Conference Call and Webcast

AspenTech will host a conference call and webcast today, September 28, 2006, at 6:00 pm (EDT) to discuss the company's financial results, business outlook, and related corporate and financial matters. The live dial-in number is 877-239-3024, conference ID code 7759540. Interested parties may also listen to a live webcast of the call by logging on to the Investor Relations section of AspenTech's website, http://www.aspentech.com/corporate/investor.cfm, and clicking on the "webcast" link. A replay of the call will be archived on AspenTech's website and will also be available via telephone at 800-642-1687 or 706-645-9291, conference ID code 7759540, through October 5, 2006.

About AspenTech

Aspen Technology, Inc. provides industry-leading software and professional services that help process companies improve efficiency and profitability by enabling them to model, manage and control their operations. The new generation of integrated aspenONE solutions is aligned with the key industry business processes, providing manufacturers the capabilities they need to optimize operational performance, make real-time decisions and synchronize the plant and supply chain. Over 1,500 leading companies already rely on AspenTech's software, including Bayer, BASF, BP, Chevron Corporation, DuPont, ExxonMobil, Fluor, GlaxoSmithKline, Sanofi-Aventis, Shell and Total. For more information, visit www.aspentech.com.

AspenTech, aspenONE and the aspen leaf logo are trademarks of Aspen Technology, Inc., Cambridge, Mass.

                        ASPEN TECHNOLOGY, INC.
                 CONSOLIDATED STATEMENT OF OPERATIONS
                 (in thousands except per share data)

                               Three Months Ended      Year Ended
                               June 30,  June 30,  June 30,  June 30,
                                 2006      2005      2006      2005
                               --------- --------- --------- ---------
                                             (Unaudited)
REVENUES:
 Software licenses             $ 44,387  $ 36,995  $152,686  $129,621
 Service and other               34,776    34,802   140,564   140,373
                               --------- --------- --------- ---------
  Total revenues                 79,163    71,797   293,250   269,994
                               --------- --------- --------- ---------

COST OF REVENUES:
 Cost of software licenses        4,168     4,157    16,805    16,864
 Cost of service and other       18,794    19,357    72,492    82,744
 Amortization of technology
  related intangible assets       1,739     1,782     7,070     7,112
                               --------- --------- --------- ---------
  Total cost of revenues         24,701    25,296    96,367   106,720
                               --------- --------- --------- ---------

 Gross profit                    54,462    46,501   196,883   163,274

OPERATING COSTS:
 Selling and marketing           23,178    26,128    84,010    96,275
 Research and development        10,245    11,933    44,139    47,276
 General and administrative      12,019    13,303    41,916    49,277
 Restructuring charges              265     3,330     3,993    24,960
 Loss on sales and disposals
  of assets                         418    14,590       898    14,314
                               --------- --------- --------- ---------
  Total operating costs          46,125    69,284   174,956   232,102
                               --------- --------- --------- ---------

 Income (loss) from operations    8,337   (22,783)   21,927   (68,828)

 Other income (expense), net        (79)     (396)    1,076      (481)
 Interest income, net             1,422       219     4,049     2,034
                               --------- --------- --------- ---------

 Income (loss) before income
  tax provision                   9,680   (22,960)   27,052   (67,275)

 Income tax provision            (2,865)   (3,292)   (8,706)   (3,499)
                               --------- --------- --------- ---------

 Net income (loss)                6,815   (26,252)   18,346   (70,774)

  Accretion of preferred stock
   discount and dividend         (3,874)   (3,703)  (15,383)  (14,450)
                               --------- --------- --------- ---------

 Income (loss) applicable to
  common shareholders          $  2,941  $(29,955) $  2,963  $(85,224)
                               ========= ========= ========= =========

EARNINGS PER SHARE:
 Income (loss) per share
  applicable to common
  shareholders - Basic         $   0.06  $  (0.70) $   0.07  $  (2.01)
                               ========= ========= ========= =========
 Income (loss) per share
  applicable to common
  shareholders - Diluted       $   0.05  $  (0.70) $   0.06  $  (2.01)
                               ========= ========= ========= =========

 Weighted average shares
  outstanding - Basic            46,989    42,942    44,627    42,381
                               ========= ========= ========= =========
 Weighted average shares
  outstanding - Diluted          58,646    42,942    53,771    42,381
                               ========= ========= ========= =========
 Supplemental information -

                               Three Months Ended      Year Ended
                               June 30,  June 30,  June 30,  June 30,
                                 2006      2005      2006      2005
                               --------- --------- --------- ---------
                                             (Unaudited)

Stock-based compensation costs included in the Statements of
 Operations
 Effective July 1, 2005, AspenTech adopted SFAS 123R, "Share-Based
  Payment," and uses the modified prospective method to value its
  share-based payments. Accordingly, for the three months and year
  ended June 30, 2006, stock-based compensation was accounted for
  under SFAS 123R while for the three months and year ended June 30,
  2005, stock-based compensation was accounted for under APB 25,
  "Accounting for Stock Issued to Employees," as permitted by SFAS
  123. The amounts in the attached Statements of Operations include
  stock-based compensation as follows:



  Cost of service and other    $    339  $     27  $  1,244  $    128
  Selling and marketing             566        20     2,126        94
  Research and development          342        13     1,056        61
  General and administrative        408       650     2,449     1,241
                               --------- --------- --------- ---------

  Total stock-based
   compensation                $  1,655  $    710  $  6,875  $  1,524
                               ========= ========= ========= =========



Payroll tax-related charges resulting from the stock option review
 included in the Statements of Operations
 As a result of the completion of the stock option review conducted by
  the subcommittee of independent directors, AspenTech has incurred
  certain payroll withholding and other tax charges. The amounts in
  the attached Statements of Operations include payroll and other tax
  charges related to the stock option review, as follows:

  Cost of service and other    $    556  $     11  $    840  $     61
  Selling and marketing             397         8       600        42
  Research and development          262         5       395        27
  General and administrative        287         6       433        31
                               --------- --------- --------- ---------

  Total payroll and other tax
   costs associated with the
   stock option review         $  1,502  $     30  $  2,268  $    161
                               ========= ========= ========= =========
                        ASPEN TECHNOLOGY, INC.
                CONSOLIDATED CONDENSED BALANCE SHEETS
                            (in thousands)

                                                   June 30,  June 30,
                                                     2006      2005
                                                   --------- ---------
ASSETS                                                 (Unaudited)
Current assets:
 Cash and cash equivalents                         $ 86,272  $ 68,149
 Accounts receivable, net                            55,654    52,102
 Unbilled services                                    8,518     9,826
 Current portion of long-term installments
  receivable, net                                    12,123     5,355
 Deferred tax asset                                       -       692
 Prepaid expenses and other current assets            8,813    11,299
                                                   --------- ---------

  Total current assets                              171,380   147,423
                                                   --------- ---------

Long-term installments receivable, net               35,681    18,445
Retained interest in sold receivables, net           19,010    16,667
Equipment and leasehold improvements, net             8,351    10,956
Computer software development costs, net             15,456    17,411
Intangible assets, net                               20,048    26,852
Purchased intellectual property, net                    165       730
Deferred tax asset                                    1,595     1,354
Other assets                                          2,552     2,656
                                                   --------- ---------

  Total assets                                     $274,238  $242,494
                                                   ========= =========


LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
Current liabilities:
 Current portion of long-term debt                 $    247  $  1,042
 Accounts payable and accrued expenses               81,646    85,679
 Deferred revenue                                    64,238    57,846
                                                   --------- ---------
  Total current liabilities                         146,131   144,567
                                                   --------- ---------

Long-term debt, less current maturities                 149       338
Deferred revenue, less current portion                2,609     2,093
Deferred tax liability                                1,309     2,760
Other liabilities                                    20,446    23,143

Redeemable preferred stock                          125,475   121,210

Total stockholders' equity (deficit)                (21,881)  (51,617)
                                                   --------- ---------

  Total liabilities and stockholders' equity
   (deficit)                                       $274,238  $242,494
                                                   ========= =========

CONTACT: Media:
Aspen Technology, Inc.
Patrick Pecorelli, 617-949-1220
patrick.pecorelli@aspentech.com
or
Investors:
Integrated Corporate Relations
Kori Doherty, 617-217-2084
kdoherty@icrinc.com

SOURCE: Aspen Technology, Inc.