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Aspen

azpn · NASDAQ Technology
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Ticker azpn
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Employees 1001-5000
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FY2005 Annual Report · Aspen
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Headquarters
Aspen Technology, Inc.
10 Canal Park
Cambridge, Massachusetts 02141
USA

Phone: 617.949.1000
Fax: 617.949.1030
www.aspentech.com
info@aspentech.com

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Driving Process Profitability

 
 
 
 
 
Officers, Board of Directors and Corporate Information

Executive Officers

Corporate Offices

Corporate Information

Mark E. Fusco
President and Chief Executive Officer

Frederic G. Hammond
Senior Vice President and General Counsel

Aspen Technology, Inc.
Headquarters
10 Canal Park
Cambridge, Massachusetts 02141 USA
1.617.949.1000

Questions regarding taxpayer identification numbers,
transfer procedures, and other stock account 
matters should be addressed to the Transfer Agent 
& Registrar at:

Charles F. Kane
Senior Vice President, Finance 
and Chief Financial Officer

Manolis Kotzabasakis
Senior Vice President, Sales  
and Business Development

C. Steven Pringle
Senior Vice President, Global 
Consulting Services

Blair Wheeler
Senior Vice President, Marketing

Board of Directors

Stephen M. Jennings, Chairman
Director, Monitor Group

Donald P. Casey
Chairman
Mazu Networks, Inc.

Aspen Technology, Inc.
Houston, Texas USA
1.281.584.1000

Aspen Technology, Inc.
New Providence, New Jersey USA
1.908.516.9500

Aspen Technology, Inc.
Gaithersburg, Maryland USA
1.301.944.2500

Aspen Technology, Inc.
Calgary, Alberta, Canada
1.403.303.1000

AspenTech Europe SA/NV
La Hulpe, Belgium
32.(0)2.701.94.50

AspenTech Ltd.
Cambridge, UK
44.(0)1223.819700

Mark E. Fusco
President and Chief Executive Officer 
Aspen Technology, Inc.

Aspen Technology España, S.A.
Barcelona, Spain
34.93.5569400

Gary E. Haroian
Consultant

Douglas A. Kingsley
Managing Director, Advent International

Joan C. McArdle
Senior Vice President 
Massachusetts Capital Resource Company

Michael Pehl
Partner, Advent International

AspenTech (Beijing) Ltd.
Beijing, PR China
86.10.84538600

AspenTech Japan Co., Ltd.
Tokyo 102-0083 Japan
81.(0)3.3262.1710

Independent Public Accountants

Deloitte & Touche LLP
200 Berkeley Street
Boston, Massachusetts 02116 USA

Legal Counsel

Wilmer Cutler Pickering Hale and Dorr LLP
60 State Street
Boston, Massachusetts 02109 USA

American Stock Transfer & Trust Co.
6201  15th Avenue
Brooklyn, New York 11219 USA
1.800.937.5449
www.amstock.com
info@amstock.com

The Annual Meeting of Shareholders will be held on
December 1, 2005, at 10:00 a.m. at the offices of:

Wilmer Cutler Pickering Hale and Dorr LLP
60 State Street
Boston, Massachusetts 02109 USA

Shareholders may obtain a copy of the Company’s
Annual Report on Form 10K, for the fiscal year ended
June 30, 2005, filed with the Securities and Exchange
Commission, by sending a written request to:

Investor Relations
Aspen Technology, Inc.
10 Canal Park
Cambridge, Massachusetts 02141-2201 USA
1.888.996.7080
1.617.949.1624

Projections, estimates, and business plans in this 
publication are forward-looking statements that involve
risks and uncertainties. Actual future market growth,
capital expenditures, costs, earnings, events, financial
performance, and plans could differ materially due to,
for example, changes in market conditions, the outcome
of commercial negotiations, changes in operating
conditions and costs, technology developments, 
and other factors discussed in this document and in
Item 1 of the Company’s Form 10K for the year ended
June 30, 2005. 

AspenTech, aspenONE, and the aspen leaf are 
trademarks or registered trademarks of 
Aspen Technology, Inc., Cambridge, Massachusetts USA.

Copyright © 2005
Aspen Technology, Inc.
All rights reserved.

Since  AspenTech  was  founded  in  1981,  we  have  focused  on  delivering  substantial  and

measurable value to our customers by helping them to model, optimize and control their

operations. Our large and loyal customer base has captured hundreds of millions of dollars

of value by using AspenTech solutions. With a rigorous R&D process, an award-winning

customer  support  staff  and  a  global  professional  services  organization,  AspenTech  is

committed to ensuring that our customers maximize their potential.

“During a recent hurricane, several major crude pipelines were shut down. 
With aspenONETM Planning, Scheduling & Blending for Petroleum, we had a 45-day
view of our intermediate feedstock inventory, which allowed the refineries to run

many different scenarios to ensure that they could keep their units running. 

This visibility into their supply chain helped them maintain throughput during 

a very challenging time.”

Phil Koenig, Manager of Engineering and Analytical Services
Marathon Petroleum Company

To Our Shareholders:

In the ten months since I joined AspenTech as President and CEO,
my goal has been to re-establish a foundation for long-term growth
and value. I am pleased to report that we made substantial progress
toward this goal, and I am confident that AspenTech is poised to
drive growth and profitability as we enter fiscal 2006.

In my last shareholder letter, I talked about the considerable time and
money the Company had spent addressing a number of extraneous
challenges over the past three years. Additionally, the Company had
a considerable amount of debt on its balance sheet, which created
concerns about AspenTech’s financial position. Today, we have a 
balance sheet with almost no debt and we have made significant
progress in resolving major external distractions. As a result, we are
now able to focus on the Company’s strategic direction and invest in
projects that we believe will drive returns for shareholders in the future.

Setting the Stage for Growth
AspenTech has a wealth of assets—including a large blue chip customer
base, industry-leading solutions and a significant value proposition—but
the Company has not done an optimal job of leveraging these assets
to drive attractive financial performance. To address this issue, we have
made a number of changes that will help AspenTech generate improved
operating performance in the future. 

First, we have added several new executives to our management
team. These professionals have implemented substantial changes
that have already started to have a positive impact on our execution.

Second, we executed a significant reorganization of the Company 
at the end of our third quarter that aligned all of our customer-facing

AspenTech         1

“We use AspenTech not only because of its state-of-the-art technology today,

but also because we believe AspenTech will be a leader in its field in the future.”

Henry Sperle, Executive Vice President
Borealis A/S

operations around two key vertical markets: Energy and Chemicals.
We believe these changes will help us to get closer to our customers,
improve product development and improve accountability across all
functional departments.

Finally, we are integrating our operating infrastructure. AspenTech
has grown primarily by acquiring over 20 companies during its history,
resulting in many disparate offices and inefficient business processes.
In order to reduce costs and improve the efficiency of our business,
we have reduced our workforce, closed multiple office locations
around the world and consolidated our R&D efforts. The combination
of a new, more agile organizational structure and a streamlined 
infrastructure provides AspenTech with a foundation to execute better
in the future.

Making Progress on Our Goals
I am extremely pleased to report that these changes have enabled
AspenTech to make progress against the top priorities we presented
to investors when I joined the Company in January 2005.

Strengthened balance sheet
We paid off approximately $58 million of debt at the end of fiscal
2005 and are now in a position to grow our cash balance over the
course of fiscal 2006. With a good cash position, a nearly debt-free
balance sheet and plans to increase cash flow with improved profitability,
AspenTech has the solid financial foundation our customers need 
to invest in our solutions with confidence.

2         2005 Annual Report

Reduced cost infrastructure
During fiscal 2005, we made significant strides toward reducing
our expense run rate as part of our ongoing effort to drive down
costs over time. Our lower expense base will be an important factor
in helping the Company to drive earnings and cash flow in the
coming fiscal year.

Improved services business
AspenTech’s services revenues showed improvement in fiscal
2005, and grew sequentially in the fourth quarter for the first time
in over a year. Perhaps even more important, our services gross
margins improved from 37% to 43% over the past three quarters.
The continued improvement of our services profitability should be 
a key driver of future earnings in the business.

Improved quarterly performance
We met our bottom-line financial guidance to investors for the third
and fourth quarters of fiscal 2005. We also made significant progress
in lowering our ongoing operating expenses. I see room for additional
improvement, and I believe that AspenTech is poised to return to
profitability in fiscal 2006.

Growing Adoption of Integrated Solutions
While I am very pleased with the results of these four initiatives, I am
also excited by our prospects for selling integrated solutions.

AspenTech has a broad portfolio of best-in-class products. Over the
past several years, we have invested a significant amount of R&D
resources to bring these products together to deliver our vision of

AspenTech         3

"If AspenTech simulation tools were not available to us, there would be a significant

delay between the time when we want to make a decision and when we can

actually make a decision. And that’s losing money and opportunity."

Doug Evans
Director, Process Technology and Reliability
Petro-Canada

integrated solutions to the process industries. Unlike point solutions,
which are generally implemented on a departmental basis, our integrated
solutions will help process manufacturers solve broader, more complex
business problems and capture better operational and financial benefits
by enabling them to make better, faster decisions across broader
segments of their business. By solving more complex business problems
for our customers with integrated solutions, we believe we can expand
our market share and grow our revenues over time. 

The Future
In summary, AspenTech enters fiscal 2006 in a much stronger 
operational and financial position. We resolved multiple external distractions,
made progress in streamlining and simplifying our organization,
reduced our costs and gained momentum with our integrated solution
offerings. With these accomplishments in place, AspenTech begins
an exciting new phase in the Company’s history.

I look forward to continuing our progress in fiscal 2006 and thank you
for your continued support.

Sincerely,

Mark E. Fusco
President and Chief Executive Officer

4         2005 Annual Report

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UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
Washington, D.C. 20549 

FORM 10-K 
FOR ANNUAL AND TRANSITION REPORTS PURSUANT TO
SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

(Mark One) 
⌧⌧

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

For the fiscal year ended June 30, 2005. 
or 

""

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

For the transition period from 

to

Commission file number: 0-24786 

Aspen Technology, Inc. 
(Exact Name of Registrant as Specified in Its Charter) 

Delaware 
(State or Other Jurisdiction of Incorporation or Organization)

04-2739697 
(I.R.S. Employer Identification Number) 

Ten Canal Park
Cambridge, Massachusetts 
(Address of Principal Executive Offices) 

02141 
(Zip Code) 

Registrant’s telephone number, including area code: 
(617) 949-1000 

Securities registered pursuant to Section 12(b) of the Act: 

None 

Securities registered pursuant to Section 12(g) of the Act: 

Common stock, $0.10 par value per share 

Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the
Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required 
to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes ⌧ No "

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, 

and will not be contained, to the best of the Registrant’s knowledge, in definitive proxy or information statements 
incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ⌧

Indicate by check mark whether the registrant is an accelerated filer (as defined in Exchange Act Rule 12b-2). 

Yes ⌧ No "

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). 

Yes " No ⌧

As of December 31, 2004, the aggregate market value of common stock (the only outstanding class of common equity of

the Registrant) held by nonaffiliates of the Registrant was $264,799,529, based on a total of 42,640,826 shares of common 
stock held by nonaffiliates and on a closing price of $6.21 on December 31, 2004 for the common stock as reported on the
Nasdaq National Market. 

As of September 9, 2005, 43,187,397 shares of common stock were outstanding. 

Documents Incorporated by Reference 

The Registrant intends to file a definitive proxy statement pursuant to Regulation 14A within 120 days of the end of the 
fiscal year ended June 30, 2005. Portions of such proxy statement are incorporated by reference in Part III of this Form 10-K. 

 
 
TABLE OF CONTENTS 

Item 1.
Item 2.
Item 3.
Item 4.

PART I 
Business. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Legal Proceedings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Submission of Matters to a Vote of Security Holders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PART II

Item 5. 

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer 

Item 6.
Item 7. 

Item 7A.
Item 8.
Item 9. 

Purchases of Equity Securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selected Financial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Management’s Discussion and Analysis of Financial Condition and Results of 

Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Quantitative and Qualitative Disclosures About Market Risk . . . . . . . . . . . . . . . . . . . . . .
Financial Statements and Supplementary Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changes in and Disagreements with Accountants on Accounting and Financial 

Disclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Item 9A.
Item 9B.

Controls and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Item 10.
Item 11.
Item 12. 

PART III 
Directors and Executive Officers of the Registrant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Executive Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Security Ownership of Certain Beneficial Owners and Management and Related 

Stockholder Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Item 13.
Item 14.

Certain Relationships and Related Transactions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Principal Accountant Fees and Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PART IV 
Exhibits, Financial Statement Schedules, and Reports on Form 8-K. . . . . . . . . . . . . . . . .
Item 15.
Signatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Aspen, aspenONE, Aspen Plus, HYSYS, AspenTech and DMCPlus are our registered trademarks. 

Aspen IP.21, Aspen MIMI, Aspen PIMS, Aspen Icarus, Aspen SmartStep, Aspen Plant Scheduler, Aspen 
Supply Planner, Aspen Advisor, Aspen Orion and Aspen Zyqad are our trademarks. 

This Form 10-K 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, which are intended to be 
covered by the safe harbors created thereby. For this purpose, any statements contained herein that are 
not statements of historical fact may be deemed to be forward-looking statements. Without limiting the 
foregoing, the words “believes,” “anticipates,” “plans,” “expects” and similar expressions are intended to 
identify forward-looking statements. Readers are cautioned that all forward-looking statements involve 
risks and uncertainties, many of which are beyond our control, including the factors set forth under 
“Item 1. Business—Factors that may affect our operating results and stock price.” Although we believe 
that the assumptions underlying the forward-looking statements contained herein are reasonable, any of 
the assumptions could be inaccurate and there can be no assurance that actual results will be the same as 
those indicated by the forward-looking statements included in this Form 10-K. In light of the significant 
uncertainties inherent in the forward-looking statements included herein, the inclusion of such information
should not be regarded as a representation by us or any other person that our objectives and plans will be 
achieved. Moreover, we assume no obligation to update these forward-looking statements to reflect actual 
results, changes in assumptions or changes in other factors affecting such forward-looking statements. 

2 

 
Item 1.

Business

PART I 

This Form 10-K, as well as all other reports filed with or furnished to the Securities and Exchange 

Commission (SEC), are available free of charge through our Internet site (http://www.aspentech.com) as 
soon as practicable after we electronically file such material with, or furnish it to, the SEC. The public may 
read and copy any materials we file with the SEC at the SEC’s Public Reference Room at 450 Fifth Street, 
NW, Washington, DC 20549. The public may obtain information on the operation of the Public Reference 
Room by calling the SEC at 1-800-SEC-0330. The SEC maintains an Internet site (http://www.sec.gov) that 
contains reports, proxy and information statements, and other information regarding issuers that file 
electronically with the SEC. 

We are a leading supplier of integrated software and services to the process industries, which consist 
of oil and gas, petroleum, chemicals, pharmaceuticals and other industries that manufacture and produce 
products from a chemical process. Our software and services are designed to improve a variety of business 
activities, including plant and process design, economic evaluation, production, production planning and 
scheduling, and managing operational performance. These solutions can help our customers improve their
competitiveness and profitability by increasing revenues, reducing operating costs, reducing working 
capital requirements and decreasing capital expenditures. 

Our products are tailored to address the industry challenges in each major vertical market that we 

serve. In each industry our solutions are focused on three primary business areas: engineering and 
innovation, plant operations, and supply chain management. In our fiscal year ended June 30, 2005 our 
engineering and innovation solutions accounted for approximately 67% of our software license revenue. 
Our plant operations and supply chain management solutions accounted for approximately 33% of 
software license revenue. 

• Our engineering and innovation solutions are desktop applications and services that help companies 

design and improve their plants and processes. Our customers use our engineering software and
services to model and improve the way they develop and deploy manufacturing assets to improve 
return on capital. Our engineering products are tailored to address the industry challenges in each
major vertical market that we serve. Our customers use our engineering software to design and 
manage their intellectual property in order to reduce cost of investment, improve physical plant 
operating performance and bring new products to market more quickly. Our principal engineering 
products include Aspen Plus, Aspen HYSYS and Aspen Icarus. 

• Our plant operations solutions include desktop applications, IT infrastructure and services that 

enable companies to model, manage and control their plants more efficiently, helping them to make 
better-informed, more profitable decisions. These solutions help companies make decisions that can 
reduce fixed and variable costs in the plant, improve product yields, procure the right raw materials 
and evaluate opportunities for cost savings and efficiencies in their operations. Our principal 
products for plant operations include Aspen DMC Plus, Aspen Advisor, and Aspen InfoPlus.21.

• Our supply chain management solutions include desktop applications, IT infrastructure and services
that enable manufacturers to operate their plants and supply chains more efficiently, from customer 
demand through manufacturing to delivery of the finished product. These solutions help companies 
to reduce inventory carrying costs, respond more quickly to changes in market conditions and 
improve customer service. Our principal products for plant operations include Aspen PIMS, Aspen
Orion and Aspen Plant Scheduler 

While the majority of our revenue historically has come from selling individual applications focused 
on engineering and innovation, plant operations and supply chain management, our customers increasingly 
are focused on improving their operations by deploying integrated software systems that bridge the gap 

3 

between their enterprise information technology, or IT, business systems and their plant floor systems by 
drawing on capabilities that span multiple applications and business areas. In order to meet this need and 
address competitive offerings we have unified our solutions under the aspenONE brand with differentiated 
aspenONE vertical solutions targeted at specific segments of the process industries. Our aspenONE 
solutions broaden the scope of optimization across a manufacturer’s operations by expanding the use of 
process models in the operations environment and linking engineering, plant and business systems to
improve our customers’ visibility into their manufacturing operations. Much like the enterprise resource 
planning, or ERP, market evolved from providing individual, best-in-class applications to providing a 
streamlined integrated solution suite, the market for integrated solutions focused on plant operations is 
evolving out of process manufacturers’ need to have a more integrated solution to manage day-to-day 
operations. 

Our industry-specific aspenONE solutions encompass our existing engineering, plant operations and 

supply chain management solutions for each vertical market that we serve. In addition, as part of our 
aspenONE solution strategy we are strengthening the integration between our applications and adding
new capabilities to better address the most critical operational business processes in each industry.
Customers can already use existing aspenONE modules to obtain real-time operational data and to 
forecast or simulate the economic impact of potential decisions. Over time the number of business 
processes that can be addressed by aspenONE modules will increase for each vertical market that we serve. 

Our customer base of over 1,500 process manufacturers includes 46 of the world’s 50 largest chemical 

companies, 24 of the world’s 25 largest petroleum refiners, 18 of the world’s 20 largest pharmaceutical 
companies and 17 of the world’s 20 largest engineering and construction firms that serve the process 
industries. We have established a network of strategic relationships to leverage our internal sales and 
marketing efforts, enhance the breadth of our solutions and expand our implementation capabilities. This 
network includes relationships with companies such as Accenture, Intergraph, Microsoft and 
Schlumberger. 

Industry Background 

The process industries consist of oil and gas, petroleum, chemicals, pharmaceuticals and other 

industries that provide products from a chemical process. Process manufacturers face a number of
significant challenges that are specific to each industry. To succeed in an increasingly competitive global 
environment, process manufacturers must simultaneously reduce costs and increase efficiency, 
responsiveness and customer satisfaction. Because process manufacturing tends to be asset-intensive, 
increases in profitability in these industries depend substantially upon reducing the costs of raw materials, 
energy and capital. Given the large production volumes typical in the process industries and the relatively 
low profit margins characteristic of many sectors within the process industries, even relatively small
reductions in raw material or energy requirements or small improvements in input costs, throughput or
product yields can significantly increase the profitability of the process manufacturing enterprise. 

The process industries face significant challenges because of the complex activities and supply chains 

that must be managed when purchasing raw materials, manufacturing products, and delivering final 
products to customers. Factors that make it difficult for these companies to optimize these processes and 
make optimal economic decisions include the following: 

• products are manufactured in continuous processes that are unpredictable and difficult to model; 

• production sequence and raw material specification both have a major impact on feasibility and 

profitability; 

• multiple, interdependent products are made simultaneously, making production planning

complicated; 

4 

• manufacturing plants are sophisticated and extremely capital intensive; and 

• transportation logistics are complex. 

In addition to these factors that are common to most segments of the process industry, each vertical 

market has its own set of unique challenges that must be addressed in order to manage operations 
effectively. 

Oil and Gas 

The upstream oil and gas sector is driven by the high cost of capital investment, which is being 
exacerbated as the search for new reserves takes companies to more remote, politically unstable locations 
and ever deeper oceans. The high cost of investment places a premium on getting the most out of any 
expenditure. An improperly placed well that fails to economically remove all surrounding reserves or a 
poorly designed transmission system that requires excessive pressurization or maintenance can have a 
significant impact on profitability for years to come. In addition, managing oil and gas assets is complicated 
since these assets are highly complex and interconnected. Companies must achieve high output while 
minimizing investment, optimize facilities to match a constantly varying slate of crudes and gases, and 
ensure the efficient transmission of materials through large, interconnected, and environmentally sensitive 
pipeline infrastructure. 

To further complicate the challenge, every decision occurs against the backdrop of rapidly fluctuating 
open market oil and gas prices. Unlike other segments of the process industries, where raw material price 
movements are smoothed through long-term contracts, oil and gas prices can oscillate rapidly from week to 
week or even day to day. This puts enormous pressure on companies to profit from rising prices while they 
can. Delayed decisions and prolonged production ramp-ups can spell the difference between selling into a 
rising or falling market. 

Specifically, oil and gas companies face the following distinct challenges in managing their operations:

• managing assets as an interrelated system;

• ensuring consistently profitable price nominations and product contracts; 

• maximizing production with minimal capital investment; 

• responding faster to gas and oil price fluctuations and operating disruptions; and 

• ensuring regulatory compliance without adding administrative overhead. 

Petroleum 

In the downstream petroleum industry, operating margins are reaching record highs. One result of
this current market environment is that many refiners are keeping increasingly lower amounts of inventory
on hand—making them especially susceptible to changes in demand or market disruptions. Due to the 
many mergers and acquisitions that characterized the 1990s, petroleum companies must often make 
decisions with legacy IT systems that have become obsolete in the face of market volatility and new 
environmental regulations. They lack visibility into quality and production information, and can make poor 
buy vs. make vs. trade decisions because of poor, or partial, visibility into market dynamics and inventory 
levels. For example, deciding which crude to buy for a refinery necessitates knowing how much it will cost 
to transport it to the refinery, what kinds of products the refinery is set up to produce, and prevailing
volumes of and prices for the product in retail, commercial, and unbranded channels. Another 
consideration is how much it will cost to get the refined products to market. Options for trading, swapping, 
and exchanging crudes, intermediates, and products all along the chain only add to the complexity of 
economic evaluation. The situation is exacerbated by a proliferation of regional product specifications; a 

5 

volatile market, increasingly stringent environmental regulations, and changing supply and demand 
patterns. 

Running more barrels through the refinery at top capacity makes it difficult to keep the physical assets 
in prime condition and can create safety and reliability issues. Refiners are faced with the need to optimize 
the design of processes and achieve more reliable and stable operations. Process engineers are challenged 
with making timely business decisions while meeting the business objectives of designing and operating 
efficient, safe and profitable process plants. Understanding the complex interactions among equipment, 
feedstock, refined products and business objectives is key to unlocking tremendous potential at the plant 
level. 

Specifically, petroleum companies face the following distinct challenges in managing their operations:

• managing the reduced supply chain flexibility created by clean fuels legislation and the proliferation

of product specifications; 

• responding effectively to changing supply/demand balances and supply patterns; and 

• optimizing the use of energy to minimize the impact of high energy costs. 

Chemicals 

The chemical industry produces bulk chemicals that are true commodities with little or nothing to
differentiate one company’s offering from another. The market is global and highly competitive. Producers 
routinely invest to build highly specialized, continuous process plants that reduce production costs to a 
minimum. They must continue to invest over a plant’s lifetime to ensure it remains cost-competitive with
newer units. The most successful companies find ways to differentiate themselves through product quality, 
customer responsiveness and price. 

Chemical companies face a number of strategic challenges. They need to maximize the returns from 
their expensive assets. They must manage wide swings in feedstock (raw material) costs and, increasingly, 
rising energy costs. Due to global industrial consolidation, they face increasingly concentrated and 
powerful competitors and customers, placing enormous pressures on their operating margins. This 
pressure has eroded the advantages once enjoyed by companies with established market, technology or 
regional positions. In the face of such intense pressure, producers have only a limited ability to raise prices. 

To respond to these pressures many large chemical manufacturers are examining the “patchwork” of 

point solutions that they currently use to design facilities, optimize individual units, or improve their 
distribution systems. To achieve the significant, long-term cost reductions manufacturers are seeking, these 
solutions must address operational costs as a single, interrelated whole, the same way ERP systems 
squeezed costs from the interrelated transactions that define back office business processes. 

Specifically, chemical producers face the following distinct challenges in managing their operations:

• identifying and correcting cost variations when they occur;

• operating assets as one interrelated system rather than as individual components; 

• reducing plant lifecycle costs while improving operating performance; 

•  minimizing inventory without hurting customer service; 

• responding more quickly and profitably to unexpected opportunities and disruptions; and 

• ensuring regulatory compliance without adding administrative overhead. 

6 

Pharmaceuticals 

Changing industry dynamics are driving pharmaceutical companies to improve their operational 

capabilities to ensure future profitability. As a result, many pharmaceutical companies are now viewing 
manufacturing and distribution not only as a means of meeting demanding quality and supply criteria but 
also as a means of achieving competitive advantage by improving their operational efficiency. By unlocking 
the economic value hidden in their industrial operations, manufacturers can reduce costs substantially. 

Pharmaceutical companies face a number of strategic challenges. Regulatory agencies are demanding 
strict, detailed material, process, and personnel tracking. At the same time, companies are facing increased 
competition from generic drugs and must increasingly speed products to market to maximize profits. 
Rising competition from analogs and generics is driving pharmaceutical companies to aim for 100% on-
time and in-full delivery in order to avoid market share erosion. Producers typically carry 6 to 12 months of 
product inventories to ensure availability. 

Specifically, pharmaceutical companies face the following distinct challenges in managing their 

operations: 

• complying with strict regulatory requirements;

• improving manufacturing agility to take advantage of new approaches and processes; 

• reduce time required to scale-up production; 

• improving customer service; and 

• reducing the complexity of IT systems. 

Historically, technology solutions have played a major role in helping process companies to drive 

productivity improvements. In the 1980s, this increase in efficiency came from the use of distributed 
control systems, or DCS, to automate the management of plant hardware. Process manufacturers initially 
automated their production processes by deploying DCS, which used computer hardware systems, 
communication networks and industrial instruments to measure, record and automatically control process 
variables. 

In the 1990s, productivity was enhanced by the adoption of ERP systems to streamline administrative 

functions. Process manufacturers have automated key business processes by implementing ERP systems, 
which are software solutions that optimize the flow of business information across the enterprise. Although 
DCS and ERP solutions are important components of a solution to improve manufacturing enterprise 
performance, they do not incorporate either the detailed chemical engineering knowledge essential to 
optimize the design and operation of related manufacturing processes or the plant performance data 
required to support more intelligent real-time decision making. 

Following multiple mergers and acquisitions among process manufacturing companies, the global 

operations of process manufacturers became more complicated and difficult to manage, since they were 
managing more plant assets than ever before. As these companies expand, they require enterprise 
information technology, or IT, solutions that provide clear visibility to support mission-critical business
decisions and that enable operational improvement across the entire organization. 

With the widespread adoption of ERP systems, many companies are capturing a significant amount of 

information about their operational performance. However, ERP systems act as a “cash register” for 
companies and tell them what has happened in the past. Although these systems are improving 
information flow and streamlining transactions, their influence on day-to-day operational activities is 
limited. To improve their operating performance, process manufacturers are demanding tools that enable 
them to improve their highly complex production methods and processes. To meet these objectives, 
intelligent decision-support products must provide an accurate understanding of a plant’s capabilities, as 
well as accurate planning and collaborative forecasting information. 

7 

Moreover, as process manufacturers have become more adept at using products that optimize 
individual engineering, plant operations supply chain management business processes, they increasingly 
are seeking additional performance improvements by integrating these products, both with one another 
and with DCS, ERP and other enterprise systems, to provide real-time, intelligent decision support. To 
achieve these objectives, companies are implementing solutions that integrate related business processes 
within a single production facility and across multiple sites. In addition. by adding planning and scheduling
functionality companies are extending these solutions by optimizing their supply chains to reduce cycle 
times substantially, adjusting production quickly to meet changing customer requirements, synchronizing 
key business processes with plants and customers across numerous geographies and time zones, and 
quoting delivery dates more accurately and reliably. Traditional solutions and emerging software 
integration vendors lack the deep process knowledge essential to solve the complex problems faced by 
process manufacturers attempting to achieve true optimization of their enterprises, from design to 
production to management of the extended supply chain. 

The AspenTech Advantage 

Process manufacturers use our solutions to improve their profitability and competitiveness, not only 

by reducing raw material and energy use, cycle time, inventory cost and time to market, but increasingly by 
synchronizing and streamlining key business processes. Our competitive advantage is based on the 
following key attributes: 

Substantial process industry expertise.  By developing software for the process industries for more than 
20 years, we believe we have amassed the world’s largest collection of process industry domain knowledge 
to develop and implement solutions for our customers. Our employees have pioneered many of the most 
significant advances that today are considered industry-standard software applications across a wide variety 
of engineering, plant operations and supply chain applications. Our services and development staff are 
recognized experts in delivering value to our customers based on the practical experience they have gained 
from supporting IT installations for more than 1,500 process manufacturers worldwide. 

This significant base of chemical engineering expertise, process manufacturing experience and 

industry know-how serves as the foundation for the proprietary solution methods, physical property models 
and data estimation techniques embedded in our software solution. We continually enhance our software
applications through extensive interaction with our customers, some of which have worked with our 
products for more than twenty years. To complement our software expertise, we have assembled a staff of 
approximately 250 project engineers to provide implementation, advanced process control, real-time 
optimization, supply chain management and other consulting services. We believe this consulting team is 
the largest and most experienced of any competitive independent solution provider that serves the process 
industries. 

Large and valuable customer base.  We view our customer base of more than 1,500 process 
manufacturers as an important strategic asset and as evidence of one of the strongest franchises in the 
industry. We count among our customers 46 of the world’s 50 largest chemical companies, 24 of the world’s 
25 largest petroleum refiners, and 18 of the world’s 20 largest pharmaceutical companies. We also have
numerous leading customers in other vertical markets. In addition, 17 of the 20 largest engineering and 
construction firms that serve these industries use our design software. These relationships enable us to 
identify and develop or acquire solutions that best meet the needs of our customers, and they are a 
valuable part of our efforts to penetrate the process industries with new software solutions. We believe 
significant opportunities exist for continued penetration of strategic enterprise-wide products, particularly 
for our plant operations and supply chain management products. As process manufacturers increasingly 
focus on integration and optimization of their operations, we expect many of our existing customers to be 
among the first to implement our newly-developed enterprise solutions. 

8 

Rapid, high return on investment.  We believe that customers purchase our products because our

products provide rapid, demonstrable and significant returns on investment. Because of the large 
production volumes and relatively low profit margins typical in many of the process industries, even small 
improvements in productivity can generate substantial recurring benefits. First-year savings can exceed the
software and implementation costs of our products. Our integrated solutions, whether applied across a 
plant, an enterprise or an extended supply chain, can yield even greater returns. In addition, our products 
generate important organizational efficiencies and operational improvements, the dollar benefits of which 
can be difficult to quantify. 

Complete, integrated solution.  While some vendors offer stand-alone products that compete with one 

or more of our products, we believe we are the only provider that offers a comprehensive solution to 
process manufacturers that addresses key business processes in manufacturing operations across the 
enterprise. Our solutions can be used on a stand-alone basis, integrated with one another or integrated 
with third-party applications. Customers can initially choose to implement a point solution or our 
integrated solution, which is scalable as the customer’s needs evolve. The breadth of our solutions expand
the overall value we can bring to our customers and represent an important source of competitive
differentiation. 

Strategy 

Our strategy is to build on our position as a market and technology leader by continuing to enhance 

and integrate our broad portfolio of engineering, plant operations and supply chain management solutions 
and to deliver new solutions targeted to the specific needs of the vertical industries we serve. To implement 
this strategy we intend to: 

Build on our technology leadership by delivering an integrated suite of scalable vertical industry solutions.

We intend to build on our proven technology leadership and installed base by delivering integrated 
solutions targeted at specific vertical segments, which provide a broader set of capabilities and deliver a 
higher value proposition to existing and prospective customers. With the release of our aspenONE 
solutions in Fall, 2005 we have already reoriented our packaging, positioning and product release strategy. 
In the future we plan to realize further research and development efficiencies through the rationalization
of underlying products, increased integration and increased use of shared components across our 
applications. 

Maintain and strengthen our market leadership for point solutions.  We intend to maintain and 
strengthen our competitive position for stand-alone applications in engineering, plant operations and 
supply chain management by continuing to develop and enhance our existing offerings to respond to
competitive pressures and our customers needs. Over the past year we have delivered substantial new 
functionality in each major product area and further enhancements are planned for forthcoming product
releases. 

Invest selectively in new, high-value solutions.  We intend to invest in a few specific modules that we 
believe will unlock new sources of value for customers in selected segments of the process industries. These 
investments are intended to accelerate the development and commercialization of highly focused modules 
that incorporate technology from our engineering & innovation, plant operations and supply chain 
management products. These applications include:

• aspenONE Planning, Scheduling & Blending: an integrated solution that improves planning and 

scheduling production at refineries; 

• aspenONE Inventory Management & Operations Scheduling: a solution that helps petroleum 

companies manage the operational risk and financial exposure that result from lack of visibility into 

9 

current and projected inventories, and allowing them to make the best buy vs. make vs. trade
operational decisions. 

• aspenONE Energy Management: a solution that enables customers in multiple industries to 

manage and optimize the way they use and source energy for single or multiple production sites. 

• aspenONE Ethylene Scheduling: an integrated solution that optimizes the business process of

procuring feedstocks and scheduling ethylene plants. 

Leverage strategic alliance relationships.  Alliances are an important part of our strategy to help us 

accelerate the time it takes to bring products to market and provide us with additional resources to 
implement enterprise solutions. We have technology alliances with Accenture, Intergraph, Microsoft and
Schlumberger. We intend to continue to work with a select number of strategic alliances that will help us 
increase our sales and implementation effectiveness. 

Products: Software and Services 

We provide software and services that enable our customers to make improvements to their 

manufacturing operations across the enterprise. Our engineering & innovation software products are used 
on the engineer’s desktop and typically require a minimal amount of services. These solutions are typically 
sold on a term basis and represented approximately 67% of our fiscal 2005 software license revenue. Our 
plant operations and supply chain management products are used throughout the plant and across the 
supply chain and typically are services-intensive due to their complex nature. These solutions represented 
approximately 33% of our fiscal 2005 software license revenue. 

Our major global process industry customers are increasingly looking to partner with a few strategic 
software providers that can help them operate efficiently and profitably. To ensure that we continue as one 
of these core software providers, we are focusing our development efforts on completing the 
transformation of our stand-alone, point technologies into scalable industry-specific modules under the 
aspenONE brand framework. The following table highlights examples of the integrated aspenONE 
modules we are developing within each business area as well as the products that those modules are built 
on and typical customer benefits. 

Business 
Area
Engineering and 
Innovation

Sample
aspenONE Modules 

• Simulation & Optimization 
•  Conceptual Design
•  EconomicEvaluation 
•  Integrated Engineering 
• Equipment Design & Rating 

Related 
Products 

•  Aspen Plus 
•  Aspen HYSYS 
•  Aspen Icarus 

Plant 
 Operations 

•  Energy Management 
• Production Management &

Supply Chain
 Management

Execution 

• Planning, Scheduling & Blending
•  Advanced Process Control 
•  Real-Time Optimization 
•  Performance Management 

• Sales & Operations Planning 
• Plant Planning & Scheduling 
•  Collaborative Demand 

Management 

• Inventory Management &
Operations Scheduling 

•  Aspen DMC+ 
•  Aspen SmartStep 
•  Aspen PIMS 
•  Aspen Orion 
•  Aspen InfoPlus.21 
•  Aspen Advisor 

• Aspen Plant Scheduler
• Aspen Supply Planner 
•  Aspen PIMS 
•  Aspen Orion 

10 

Typical 
Customer Benefits 

• Reduced capital and operating costs 
• Reduced time to ramp-up manufacturing 
• Lowered manufacturing costs 
• Increased asset utilization 
• Increased production flexibility and agility
• More efficient execution of capital 

projects. 

• Improved asset efficiency
• Reduced energy costs 
• Reduced costs of regulatory compliance
•  Increased throughput 
• Improved product consistency 
• Decreased planning costs 
• Reduced inventory carrying costs 

• Improved asset efficiency
• Improved responses to customer 

requirements 

• Improved responses to changes in market 

conditions 

• Reduced inventory carrying costs 

We design our products to capture process knowledge in a consistent, accurate and reliable form 
based on models that customers can use as the basis for decision making. These models and the associated 
knowledge captured in the supporting IT systems provide real-time, intelligent decision support across the 
entire process manufacturing enterprise. Our software products can be linked with a customer’s existing
ERP products and DCS to further improve a customer’s ability to gather, analyze and use this information 
across the process manufacturing lifecycle. Our products provide decision support tools that use real-time 
plant information to determine the best economic alternative for the enterprise. These decisions cannot be 
adequately made by simply analyzing historical data from ERP systems or from disparate software 
applications that are not integrated together. By modeling future operational behavior, using consistent
data and models of their facilities, we are able to show our customers the path to capturing economic value 
and materially improve profitability. 

• Engineering and Innovation. In the process industries, maximizing profit begins with optimal design. 

Process manufacturers must be able to address a variety of challenging questions relating to 
strategic planning, collaborative engineering and de-bottlenecking and process improvement—from 
where they should locate their facilities, to how they can make their products at the lowest cost, to 
what is the best way to operate for maximum efficiency. To address these issues, they must improve 
asset optimization to enable faster, better execution of complex projects. Our engineering solutions 
help companies maximize their return on plant assets and enable collaboration with engineers on
common models and projects. 

Our engineering tools are based on an open environment and are implemented on Microsoft’s 

operating systems. Implementation of our engineering products does not typically require substantial 
consulting services, although services may be provided for customized model designs and process synthesis. 

Plant Operations.  Our plant operations products focus on optimizing companies’ day-to-day process 

industry activities, enabling them to make better, more profitable decisions and improve plant 
performance. 

The process industries’ typical production cycle offers many opportunities for optimizing profits.
Process manufacturers must be able to address a wide range of issues driving execution efficiency and cost, 
from selecting the right feedstock and raw materials, to production scheduling, to identifying the right 
balance among customer satisfaction, costs and inventory. Our plant operations products support the 
execution of the optimal operating plan in real time. 

Supply Chain Management.

In the process industries, the selection of the right raw material has a 

significant impact on product quality and profitability. Because many products in the process industries can 
be made from a variety of raw materials using different techniques, there typically is far greater complexity 
in process manufacturing than in discrete manufacturing. In this environment, process manufacturers must 
be able to make quick decisions as to which feedstock is the most profitable. Our supply chain 
management products help to capture economic value for customers by increasing margins from optimal 
feedstock selection, reducing raw material and logistics costs and reducing inventory-carrying costs. 

Our supply chain management products enable companies to reduce inventory and increase asset 
efficiency by giving them the tools to optimize their supply chain decisions from choosing the right raw 
materials to delivering finished product in the most cost-effective manner. The ever-changing nature of the 
process industries means new profit opportunities can appear at any time. To identify and seize these 
opportunities, process manufacturers must be able to increase their access to data and information across 
the value chain, optimize planning and collaborate across the value chain, and detect and exploit supply 
chain opportunities. Our supply chain management products help companies develop their optimal 
operating plans based on real-time demand and market trends. 

11 

Professional Services 

We offer professional services to provide our customers with complete solutions. These services 
include implementation and configuration services, consulting services and advanced modeling and design 
services. Our implementation and configuration services are primarily associated with the deployment of 
our plant operations and supply chain management solutions. Customers have historically used our 
engineering and innovation solutions without implementation assistance. However, we are beginning to 
offer more engineering-related services to customers, so services relating to engineering may represent a 
higher percentage of our consulting revenue in the future. Customers that purchase plant operations and 
supply chain management products frequently require implementation assistance from us and our 
partners. 

Customers who obtain consulting services from us typically engage us to provide such services over 
periods of up to 24 months. We generally charge customers for consulting services, ranging from supply 
chain to on-site advanced process control and optimization services, on a fixed-price basis or time-and-
materials basis. 

As of September 1, 2005, we employed a staff of approximately 250 project engineers to provide 
consulting services to our customers. We believe this large team of experienced and knowledgeable project 
engineers provides an important source of competitive differentiation. We primarily hire as project 
engineers individuals who have obtained doctoral or master’s degrees in chemical engineering or a related 
discipline or who have significant relevant industry experience. Our employees include experts in fields 
such as thermophysical properties, distillation, adsorption processes, polymer processes, industrial reactor 
modeling, the identification of empirical models for process control or analysis, large-scale optimization, 
supply distribution systems modeling and scheduling methods. 

Historically, most licensees of our planning and scheduling products and a limited number of licensees

of our process information management and supply chain management systems have obtained 
implementation consulting services from third-party vendors. Our strategy is to continue to develop and 
expand relationships with third-party consultants in order to provide a secondary channel of consulting
services. 

Strategic Alliances 

We have established strategic alliances with a few select companies that offer a complementary set of 
technologies, services and industry expertise that help us commercialize and accelerate the adoption of our 
integrated aspenONE solutions. These alliances include Accenture, Intergraph, Microsoft and 
Schlumberger. 

In addition to these strategic alliances, we are focused on developing new channel partners that can 
help us increase sales in regions and markets that we do not effectively reach with our direct sales force. 
Historically, most of our license sales have been generated through our direct sales force. 

Technology and Product Development 

Our base of chemical engineering expertise, process manufacturing experience and industry know-
how serves as the foundation for the proprietary solution methods, physical property models and industry-
specific business process knowledge embedded in our software solutions. Our software and services 
solutions combine three of our core competencies: 

• We support sophisticated empirical models generated from advanced mathematical algorithms 

developed by our employees. In addition, we support rigorous models of chemical manufacturing 
processes and the equipment used in those processes. We have used these advanced algorithms to 
develop proprietary models that provide highly accurate representations of the chemical and 

12 

physical properties of a broad range of materials typically encountered in the chemicals, petroleum 
and other process industries. 

• We develop software that models key customer manufacturing and business processes and 

automates the workflow of these processes. This software integrates our broad product line so that
the data used in manufacturing processes are seamlessly passed between the applications used in 
each step of the business processes. 

• We have invested significantly in supply chain software, which embeds sophisticated technology 
allowing customers to optimize their extended supply chain activities. In addition, this software 
embeds key knowledge about the details of how manufacturing and supply chain operations 
function in the process industries. 

Our product development activities are currently focused on strengthening the integration between

our applications and adding new capabilities that address specific mission-critical operational business 
processes in each industry. We intend to continue to increase the efficiency of our research and 
development operations through the consolidation of research and development locations and increased 
use of shared components across our applications. In addition, we will continue to enhance our integrated
industry-specific aspenONE solutions by adding new functionality, and more standardized integration with
third-party applications. See, for example, “Strategy—Invest selectively in new, high-value solutions” 
above. During fiscal 2003, 2004 and 2005, we incurred research and development costs of $65.1 million, 
$59.0 million and $47.2 million, respectively, which represented 18.8%, 17.7% and 17.5% of total revenue, 
respectively. As of September 1, 2005, we employed a product development staff of approximately 320
people. 

Customers 

Our software solutions are installed at the facilities of more than 1,500 customers worldwide. These 

customers include process manufacturers and the engineering and construction firms that provide services 
to them. The following table sets forth a partial selection of our customers from which we generated at 
least $300,000 of revenues in fiscal 2004 or 2005. For fiscal 2005, the percentage our license revenue 
derived from specific vertical markets were as follows: 33% from oil and gas and petroleum, 35% from 
chemicals, 22% from engineering and construction design firms, and 10% from other segments of the 
process industries, the largest of which were pharmaceutical and consumer package goods. 

Oil and Gas / Petroleum 

BP 
Chevron Corporation 
Citgo Petroleum Corporation
ENI S.p.A 
Exxon Mobil
PDVSA 
Petrobras 
Petro-Canada 
Reliance Industries Ltd. 
Repsol YPF 
Saudi Aramco 
Shell Oil Company 
SK Corp Ltd. 
Sinopec 
StatOil 

13 

Sunoco Inc. 
Total 
Valero 

Chemicals 

Air Liquide 
DSM 
BASF AG 
BP 
Braskem SA
The Dow Chemical Company 
Eastman
Mitsubishi Rayon Engineering 
Mitsui Chemicals 
Nova Chemicals, Ltd. 
Owens Corning 
Shell 
Sumitomo Chemicals 

Engineering and Construction 

ABB 
Bechtel Group 
Chiyoda Corporation 
Fluor Enterprises
Foster Wheeler 
Halliburton Energy Services, Inc. 
Jacobs Engineering Group, Inc. 
Lurgi GmbH 
Parsons 
Worley International Ltd. 

Pharmaceuticals 

Akzo Nobel 
Aventis Pharma 
Bayer Corporation 
GlaxoSmithKline, Inc. 
Merck & Co. 
Novartis Pharma A 
Pfizer 

Consumer Goods 

Cargil 
PepsiCo 
Procter & Gamble 

14 

Sales and Marketing 

We employ a value-based sales approach, offering our customers a comprehensive suite of software 

and service products that enhance the efficiency and productivity of their process manufacturing 
operations. We have increasingly focused on selling our products as a strategic investment for our 
customers and therefore devote an increasing portion of our sales efforts at senior management levels, 
including senior decision makers in manufacturing, operations and technology. Our aspenONE solution
strategy supports this value-based approach by broadening the scope of optimization across the entire 
spectrum of operations and expanding the use of process models in the operations environment by linking 
engineering, plant and business systems to improve our customers’ visibility into their manufacturing 
operations. We believe our development of new vertical-specific integrated solutions will help us to better 
address the top concerns of senior executives. 

Because the complexity and cost of our products often result in extended sales cycles, we believe that 

the development of long-term, consultative relationships with our customers is essential to a successful 
selling strategy. To develop these relationships, we focus our worldwide sales force on a defined set of 
strategic accounts. In North America we have organized our sales force around specific vertical markets. In
the rest of the world the sales force is organized around specific countries or regions.

In order to market the specific functionality and other complex technical features of our software 

products, each sales account manager and global account manager works with specialized teams of 
technical sales engineers and product specialists organized for each sales and marketing effort. Our 
technical sales engineers typically have advanced degrees in chemical engineering or related disciplines 
and actively consult with a customer’s plant engineers. Product specialists share their detailed knowledge 
of the specific features of our software solutions as they apply to the unique business processes of different 
vertical industries. 

We currently have three direct sales offices in cities in the United States and 21 direct sales offices in 
cities outside of the United States, including Barcelona, Beijing, Brussels, Calgary, Cambridge (England), 
Dusseldorf, Singapore and Tokyo. In geographic areas of lower customer concentration, we use sales 
agents and other resellers to leverage our direct sales force and to provide local coverage and first-line
support. Our overall sales force, which consists of quota carrying sales account managers, sales services 
personnel, business support engineers, partner organization personnel, industry business unit 
professionals, marketing personnel and support staff, consisted of approximately 300 persons on 
September 1, 2005. 

We supplement our direct sales efforts with a variety of marketing initiatives, including public 

relations activities, customer relationship programs, internet marketing, campaigns to promote awareness 
among industry analysts, user groups and events. 

We also license our software products at a substantial discount to universities that agree to use our 
products in teaching and research. We believe that students’ familiarity with our products will stimulate 
future demand once the students enter the workplace. Currently, more than 650 universities use our 
software products in undergraduate instruction. 

Competition 

Our markets are highly competitive and are characterized by rapid technological change. We expect 
the intensity of competition in our markets to increase in the future as existing competitors enhance and 
expand their product and service offerings and as new participants enter the market. Increased 
competition may result in price reductions, reduced profitability and loss of market share. We cannot 
assure you that we will be able to compete successfully against existing or future competitors. Some of our
customers and companies with which we have strategic relationships also are, or in the future may be, 
competitors of ours. 

15 

Many of our competitors have greater financial, marketing and other resources than we have in a 

particular market segment or overall. Competitors with greater financial resources may be able to offer 
lower prices, additional products or services, or other incentives that we cannot match or offer. These
competitors may be in a stronger position to respond quickly to new technologies and may be able to 
undertake more extensive marketing campaigns. They also may adopt more aggressive pricing policies and 
make more attractive offers to potential customers, employees and strategic partners. 

Many of our competitors have established, and in the future may establish, cooperative relationships 

with third parties to improve their product offerings and to increase the availability of their products to the 
marketplace. In addition, competitors may make strategic acquisitions to increase their ability to gain 
market share or improve the quality or marketability of their products. These cooperative relationships 
and strategic acquisitions could reduce our market share, require us to lower our prices, or both. 

Our primary competitors differ between our three principal product areas: 

• Our engineering & innovation software competes with products of businesses such as ABB, Aveva 

Group (formerly Cadcentre), Chemstations, Simulation Sciences (a division of Invensys),
Honeywell, MDC Technology, Process Systems Enterprise, Shell Global Solutions and WinSim 
(formerly ChemShare). As we expand our engineering solutions into the collaborative process 
lifecycle management market we may face competition from companies that we have not typically
competed against in the past, such as Agile, Invensys, Parametric Technology, SAP, Siemens and 
EDS. 

• Our plant operations software competes with products of companies such as ABB, Honeywell, 

Invensys, OSIsoft, Rockwell, components of SAP’s offering and Siemens. 

• Our supply chain management software competes with products of companies such as Honeywell, 

i2 Technologies, Manugistics and components of SAP’s supply chain offering. 

In addition, we face competition in all areas of our business from large companies in the process 

industries that have internally developed their own proprietary software solutions. 

We believe the key competitive differentiator in our industry is the value, or return on investment, 
that our software and services provide. We seek to develop and offer an integrated suite of targeted, high-
value vertical industry solutions that can be implemented with relatively limited service requirements. We 
believe this approach provides us with a competitive advantage over many of our competitors, which offer 
software products that are more service-based. The principal competitive factors in our industry also
include: 

• breadth and depth of software offerings; 

• domain expertise of sales and service personnel; 

• extent of consistent global support; 

•  performance and reliability;

•  price; and 

• time to market. 

Intellectual Property 

We regard our software as proprietary and rely on a combination of copyright, patent, trademark and 

trade secret laws, license and confidentiality agreements, and software security measures to protect our 
proprietary rights. We have obtained or applied for patent protection in the United States with respect to 
some of our intellectual property, but generally do not rely on patents as a principal means of protecting 
intellectual property. We have registered or applied to register some of our significant trademarks in the 
United States and in selected other countries. 

16 

We generally enter into non-disclosure agreements with our employees and customers, and 

historically have restricted access to our software products’ source codes, which we regard as proprietary 
information. In a few cases, we have provided copies of the source codes for products to customers solely 
for the purpose of special product customization and have deposited copies of the source codes for 
products in third-party escrow accounts as security for ongoing service and license obligations. In these 
cases, we rely on non-disclosure and other contractual provisions to protect our proprietary rights. 

The laws of many countries in which our products are licensed may not protect our products and 
intellectual property rights to the same extent as the laws of the United States. The laws of many countries 
in which we license our products protect trademarks solely on the basis of registration. We currently 
possess a limited number of trademark registrations in selected foreign jurisdictions and have applied for 
foreign copyright and patent registrations, which correspond to the United States trademarks, copyrights 
and patents described above, to protect our products in foreign jurisdictions where we conduct business. 

The steps we have taken to protect our proprietary rights may not be adequate to deter 

misappropriation of our technology or independent development by others of technologies that are 
substantially equivalent or superior to our technology. Any misappropriation of our technology or
development of competitive technologies could harm our business. We could incur substantial costs in
protecting and enforcing our intellectual property rights. 

Moreover, from time to time third parties may assert patent, trademark, copyright and other 

intellectual property rights to technologies that are important to our business. In such an event, we may be 
required to incur significant costs in litigating a resolution to the asserted claims. The outcome of any 
litigation might require that we pay damages or obtain a license of a third party’s proprietary rights in 
order to continue licensing our products as currently offered. If such a license were required, it might not 
be available on terms acceptable to us, or at all. 

We believe that the success of our business depends more on the quality of our proprietary software 

products, technology, processes and know-how than on trademarks, copyrights or patents. While we
consider our intellectual property rights to be valuable, we do not believe that our competitive position in
the industry is dependent simply on obtaining legal protection for our software products and technology. 
Instead, we believe that the success of our business depends primarily on our ability to maintain a 
leadership position in developing our proprietary software products, technology, information, processes 
and know-how. Nevertheless, we attempt to protect our intellectual property rights with respect to our 
products and development processes through trademark, copyright and patent registrations, both foreign 
and domestic, whenever appropriate as part of our ongoing research and development activities. 

Employees 

As of September 1, 2005, we had a total of 1,319 full-time employees. Of this total, 727 were located in 

the United States and 592 were located internationally. None of our employees is represented by a labor 
union, except that approximately 19 employees of Hyprotech UK Ltd belong to Prospect Union. We have
experienced no work stoppages and believe that our employee relations are good. 

Factors that may affect our operating results and stock price 

Investing in our common stock involves a high degree of risk. You should carefully consider the risks 

and uncertainties described below before purchasing our common stock. The risks and uncertainties 
described below are not the only ones facing our company. Additional risks and uncertainties may also
impair our business operations. If any of the following risks actually occur, our business, financial 
condition or results of operations would likely suffer. In that case, the trading price of our common stock 
could fall, and risks related to our business you may lose all or part of the money you paid to buy our 
common stock.

17 

Risks Related to our Business 

Fluctuations in our quarterly revenues, operating results and cash flow may cause the market price of our 
common stock to fall. 

Our revenues, operating results and cash flow have fluctuated in the past and may fluctuate 
significantly in the future as a result of a variety of factors, many of which are outside of our control, 
including: 

• demand for our products and services; 

• our customers’ purchasing patterns; 

• the length of our sales cycle;

• changes in the mix of our license revenues and service revenues;

• the timing of introductions of new solutions and enhancements by us and our competitors;

• seasonal weakness in the first quarter of each fiscal year (which for us is the quarter ended 

September 30), primarily caused by a slowdown in business in some of our international markets; 

• the timing of our investments in new product development; 

• the mix of domestic and international sales; 

• changes in our operating expenses; and 

• fluctuating economic conditions, particularly as they affect companies in the oil and gas, chemicals, 

petrochemicals and petroleum industries. 

We ship software products within a short period after receipt of an order and typically do not have a 

material backlog of unfilled orders for software products. Consequently, revenues from software licenses in
any quarter are substantially dependent on orders booked and shipped in that quarter. Historically, a 
majority of each quarter’s revenues from software licenses has come from license agreements that have
been entered into in the final weeks of the quarter. Therefore, even a short delay in the consummation of
an agreement may cause our revenues to fall below expectations of public market analysts and investors for 
that quarter. 

Since our expense levels are based in part on anticipated revenues, we may be unable to adjust our 
spending quickly enough to compensate for any revenue shortfall and any revenue shortfall would likely 
have a disproportionately adverse effect on our operating results. We expect that the factors listed above 
will continue to affect our operating results for the foreseeable future. Because of the factors listed above, 
we believe that period-to-period comparisons of our operating results are not necessarily meaningful and 
should not be relied upon as indications of future performance. 

If, due to one or more of the foregoing factors or an unanticipated cause, our operating results fail to 
meet the expectations of public market analysts and investors in a future quarter, the market price of our 
common stock would likely decline. 

Our lengthy sales cycle makes it difficult to predict quarterly revenue levels and operating results. 

Because license and implementation fees for our software products are substantial and the decision to 
purchase our products typically involves members of our customers’ senior management, the sales process 
for our solutions is lengthy and can exceed one year. Accordingly, the timing of our license revenues is 
difficult to predict, and the delay of an order could cause our quarterly revenues to fall substantially below 
our expectations and those of public market analysts and investors. Moreover, to the extent that we 
succeed in shifting customer purchases away from individual software products and toward more costly 

18 

integrated suites of software and services, our sales cycle may lengthen, which could increase the likelihood
of delays and cause the effect of a delay to become more pronounced. Delays in sales could cause 
significant shortfalls in our revenues and operating results for any particular period. 

We derive a majority of our total revenues from customers in the oil and gas, chemicals, petrochemicals and
petroleum industries, which are highly cyclical, and our operating results may suffer if these industries experience 
an economic downturn. 

We derive a majority of our total revenues from companies in the oil and gas, chemicals, 

petrochemicals and petroleum industries. Accordingly, our future success depends upon the continued 
demand for manufacturing optimization software and services by companies in these process 
manufacturing industries. The oil and gas, chemicals, petrochemicals and petroleum industries are highly 
cyclical and highly reactive to the price of oil, as well as general economic conditions. In the past, 
worldwide economic downturns and pricing pressures experienced by oil and gas, chemical, petrochemical 
and petroleum companies have led to consolidations and reorganizations. These downturns, pricing 
pressures and restructurings have caused delays and reductions in capital and operating expenditures by 
many of these companies. These delays and reductions have reduced demand for products and services like 
ours. A recurrence of these industry patterns, as well as general domestic and foreign economic conditions
and other factors that reduce spending by companies in these industries, could harm our operating results 
in the future. 

We have identified six material weaknesses in our internal control over financial reporting as of June 30, 2005 
that, if not remedied effectively, could result in material misstatements in our financial statements for future 
periods. 

Our management is responsible for establishing and maintaining adequate internal control over 
financial reporting for our company, as defined in Rule 13a-15(f) or 15d-15(f) promulgated under the 
Securities Exchange Act of 1934, as amended, which we refer to as the Exchange Act. Our management 
assessed the effectiveness of our internal control over financial reporting as of June 30, 2005, and 
identified six material weaknesses. A material weakness is defined by the Public Company Accounting 
Oversight Board (United States) as a significant deficiency, or combination of significant deficiencies, that
results in more than a remote likelihood that a material misstatement of the annual or interim financial 
statements will not be prevented or detected. A significant deficiency is a control deficiency, or 
combination of control deficiencies, that results in more than a remote likelihood that a misstatement of 
the financial statements that is more than inconsequential will not be prevented or detected. A control 
deficiency exists when the design or operation of a control does not allow management or employees, in
the normal course of performing their assigned functions, to prevent or detect misstatements on a timely 
basis.

The material weaknesses identified by management as of June 30, 2005 consisted of: 

• inadequate staffing and ineffective training and communication within our accounting and finance

organization; 

• ineffective revenue recognition controls;

• inadequate financial statement preparation and review procedures; 

• ineffective and inadequate controls over the accounts receivable function; 

• inadequate controls over the accounting for taxes; and 

• inadequate controls over bank accounts. 

19 

For further information about these material weaknesses, please see “Item 8. Financial Statements and 
Supplementary Data—Management Report on Internal Control over Financial Reporting.”  Because of 
these material weaknesses, management concluded that, as of June 30, 2005, our internal control over 
financial reporting was not effective based on criteria set forth by the Committee of Sponsoring 
Organizations of the Treadway Commission in Internal Control-Integrated Framework. 

We are implementing a number of remedial measures designed to address the material weaknesses 
identified as of June 30, 2005. We expect to complete implementation of these remedial initiatives during
fiscal 2006. If these remedial initiatives are insufficient to address the six identified material weaknesses, or 
if additional material weaknesses or significant deficiencies in our internal control are discovered in the 
future, we may fail to meet our future reporting obligations on a timely basis, our financial statements may 
contain material misstatements, our operating results may be harmed, we may fail to meet our future 
reporting obligations on a timely basis, we may be subject to class action litigation, and our common stock 
may be delisted from the Nasdaq National Market. For example, the identified material weaknesses 
resulted in material post-closing adjustments in our financial statements for the year ended June 30, 2005, 
and any unremedied material weakness could result in similar adjustments in future financial statements. 
Any failure to address the identified material weaknesses or any additional material weaknesses or 
significant deficiencies in our internal control could also adversely affect the results of the periodic
management evaluations and annual auditor attestation reports regarding the effectiveness of our 
“internal control over financial reporting” that are required when the SEC’s rules under Section 404 of the 
Sarbanes-Oxley Act of 2002, which is applicable to us beginning with the filing of this Form 10-K. Internal 
control deficiencies could also cause investors to lose confidence in our reported financial information. We
can give no assurance that the measures we have taken to date or any future measures will remediate the 
material weaknesses identified or that any additional material weaknesses will not arise in the future due to 
a failure to implement and maintain adequate internal control over financial reporting or circumvention of 
these controls. In addition, even if we are successful in strengthening our controls and procedures, those 
controls and procedures may not be adequate to prevent or identify irregularities or facilitate the fair 
presentation of our financial statements or SEC reports. 

We face risks related to securities litigation and investigations that could have a material adverse effect on our 
business, financial condition and results of operations. 

Following the announcement in October 2004 of an investigation by the audit committee of our board 

of directors into the accounting treatment of certain software license transactions in prior fiscal years, we 
and certain of our current and former officers and directors were named as defendants in a securities class 
action lawsuit filed in Massachusetts federal district court, alleging violations of the Exchange Act and 
claiming material misstatements concerning our financial condition. Defending against existing and 
potential litigation relating to the restatement of our consolidated financial statements will likely require 
significant attention and resources of management. Regardless of the outcome, such litigation and 
investigation will result in significant legal expenses and may cause our customers, employees and investors 
to lose confidence in our company. 

On October 29, 2004, we announced that we had received a subpoena from the U.S. Attorney’s Office 

for the Southern District of New York requesting documents relating to transactions to which the 
Company was a party during the 2000 to 2002 time frame, associated documents dating from January 1, 
1999, and additional materials. We have cooperated fully with the subpoena requests and in the 
investigation by the U.S. Attorney’s Office. However, we may in the future become the subject of 
investigation by other regulatory agencies such as the SEC. 

We may be required to indemnify certain of our current or former directors and officers who are 
named as defendants in some of these lawsuits, and such indemnification commitments may be costly. Our 
director and officer liability insurance policies provide only limited liability protection relating to the 

20 

securities class action lawsuit against us and certain of our officers and directors and may not cover 
director and officer indemnification. If these policies do not adequately cover expenses and certain
liabilities relating to this lawsuit, or if we are unable to achieve a favorable settlement of this lawsuit, our 
financial condition could be materially harmed. Increased premiums could materially harm our financial 
results in future periods. The inability to obtain this coverage due to prohibitively expensive premiums 
would make it more difficult to retain and attract officers and directors and expose us to potentially self-
funding any potential future liabilities ordinarily mitigated by director and officer liability insurance. 

New accounting standards or interpretations of existing accounting standards could adversely affect our operating 
results. 

Generally accepted accounting principles, or GAAP, in the United States are subject to interpretation

by the Financial Accounting Standards Board, or FASB, the American Institute of Certified Public
Accountants, or AICPA, the SEC and various bodies formed to promulgate and interpret appropriate 
accounting principles. A change in these principles or interpretations could have a significant effect on our 
reported financial results, and could affect the reporting of transactions completed before the 
announcement of a change. 

For example, we recognize software license revenue in accordance with Statement of Position, or 
SOP, 97-2, Software Revenue Recognition, as amended by SOP 98-9, Software Revenue Recognition with 
Respect to Certain Transactions. The accounting profession continues to discuss certain provisions of 
relevant accounting literature with the objective of providing additional guidance on potential 
interpretations related to software revenue recognition and “multiple element arrangements” in which a 
single contract includes a software license, a maintenance services agreement and/or other “elements” that
are bundled together in a total offering to the customer. These discussions and the issuance of 
interpretations, once finalized, could lead to unanticipated changes in our current revenue accounting
practices, which could change the timing of revenue recognition. 

Certain factors have in the past and may in the future cause us to defer recognition for license fees 
beyond delivery, such as the inclusion of material non-standard terms in our licensing agreements. Because 
of these factors and other specific requirements under US GAAP for software revenue recognition, we 
must have very precise terms in our software arrangements in order to recognize revenue when we initially 
deliver software or perform services. Negotiation of mutually acceptable terms and conditions can extend 
our sales cycle, and we may accept terms and conditions that do not permit revenue recognition at the time 
of delivery. 

In December 2004, the FASB issued Statement of Financial Accounting Standards, or SFAS, 
No. 123R, Share-Based Payment. SFAS No. 123R is a revision of SFAS No. 123, Accounting for Stock-
Based Compensation, and supersedes Accounting Principles Board Opinion No. 25, Accounting for Stock
Issued to Employees, and its related implementation guidance. SFAS No. 123R focuses primarily on 
accounting for transactions in which an entity obtains employee services in share-based payment 
transactions. SFAS No. 123R requires entities to recognize stock compensation expense for awards of 
equity instruments to employees based on the grant-date fair value of those awards (with limited 
exceptions). SFAS No. 123R is effective for our first annual reporting period that begins after June 15, 
2005. We expect to adopt SFAS No. 123R using its modified prospective application method. Adoption of 
SFAS No. 123R is expected to increase stock compensation expense. Assuming the continuation of current
programs, our preliminary estimate is that additional stock compensation expense for fiscal 2006 will be in
the range of $5 million to $6 million. In addition, SFAS No. 123R requires that the excess tax benefits 
related to stock compensation be reported as a financing cash inflow rather than as a reduction of taxes 
paid in cash from operations. 

21 

We face increased competition as a result of the sale of our operator training business and Hyprotech intellectual 
property to Honeywell International and the settlement of proceedings with KBC Advanced Technologies, in
addition to competition we have faced in the past, and if we do not compete successfully, we may lose market
share. 

As a result of the consent decree we entered into with the Federal Trade Commission, or FTC, and 

the related transactions with Honeywell and Bentley Systems described in “Item 7. Management’s 
Discussion and Analysis of Financial Condition and Results of Operations,” we transferred our AXSYS 
product line, our operator training business, and rights to the intellectual property of the Hyprotech
product line. The ability of Honeywell to compete against our Hyprotech engineering product, the loss of 
our operator training business, the ability of Bentley Systems to compete against our Zyqad product line, 
and the increased costs of our support obligations to Honeywell under the two year support agreement 
may have a material adverse effect on our operations. The Hyprotech engineering products are material to 
our current business and strategy, and any decrease in our revenues from these products may have a 
material adverse impact on our results of operations. Because Honeywell may license the Hyprotech
engineering products on more favorable terms than we may offer, sell the Hyprotech engineering products 
to companies that are customers of both Honeywell and us, and bundle the Hyprotech engineering 
products with its other products for the process industries, Honeywell may harm our ability to compete in 
the marketplace, including our ability to negotiate license renewals with our current customers.

In addition, as part of our settlement with KBC Advanced Technologies, we agreed to recognize 

KBC’s right to develop, market and license HYSYS.Refinery, KBC’s refinery-wide simulation product 
which competes with our refinery-wide simulation product, Aspen RefSYS. As a result of this settlement, 
increased competition from KBC may harm our market share and our revenues. 

In addition, our markets in general are highly competitive. Our engineering software competes with

products of other businesses such as ABB, Aveva Group (formerly Cadcentre), Bentley Systems, 
Chemstations, MDC Technology, Process Systems Enterprise, Simulation Sciences (a division of Invensys)
and WinSim (formerly ChemShare). Our plant operations software competes with products of companies 
such as ABB, Honeywell, Invensys, OSIsoft, Rockwell, components of SAP’s offering and Siemens. Our 
supply chain management software competes with products of companies such as Honeywell, 
i2 Technologies, Manugistics and components of SAP’s supply chain offering. As we expand our 
engineering solutions into other markets we may face competition from companies that we have not 
typically competed against in the past or competition from companies in areas where we have not 
competed in the past, such as ABB, Agile, EDS, Honeywell, Invensys, Parametric Technology, SAP and 
Siemens. We also face competition in all areas of our business from large companies in the process 
industries that have internally developed their own proprietary software solutions. 

Many of our competitors have greater financial, marketing and other resources than we have. In

addition, many of our competitors have established, and may in the future continue to establish, 
cooperative relationships with third parties to improve their product offerings and to increase the 
availability of their products to the marketplace. In addition, competitors may make strategic acquisitions 
to increase their ability to gain market share or improve the quality or marketability of their products. 
These cooperative relationships and strategic acquisitions could reduce our market share, require us to 
lower our prices, or both. Increased competition may result in price reductions, reduced profitability and 
loss of market share. We cannot assure you that we will be able to compete successfully against existing or 
future competitors. 

22 

If economic conditions and the markets for our products do not continue to improve, sales of our product lines,
particularly our manufacturing and supply chain product suites, will be adversely affected. 

Adverse changes in the economy and global economic and political uncertainty have previously caused 

delays and reductions in information technology spending by our customers and a consequent
deterioration of the markets for our products and services, particularly our manufacturing/supply chain 
product suites. If adverse economic conditions worsen or do not continue to improve, we will experience 
further reductions, delays, and postponements of customer purchases that will negatively impact our 
revenue and operating results. If economic and political conditions and the market for our products do not 
continue to improve and our revenues decline, our business could be harmed, and we may not be able to 
further reduce our costs to align them with these decreased revenues. 

If we do not continue to make the technological advances required by the marketplace, our business could be 
seriously harmed. 

Enterprises are requiring their application software vendors to provide greater levels of functionality 
and broader product offerings. Moreover, competitors continue to make rapid technological advances in 
computer hardware and software technology and frequently introduce new products, services and
enhancements. We must continue to enhance our current product line and develop and introduce new 
products and services that keep pace with increasingly sophisticated customer requirements and the 
technological developments of our competitors. Our business and operating results could suffer if we 
cannot successfully respond to the technological advances of others or if our new products or product 
enhancements and services do not achieve market acceptance. 

Under our business plan, we are investing significantly in the development of new business process 

products that are intended to anticipate and meet the emerging needs of our target markets. We have
initiated implementation of a product strategy that would unify our software solutions under the 
aspenONE brand with differentiated aspenONE vertical solutions targeted at specific process industries.
We cannot assure you that our new product development will result in products that will meet market 
needs and achieve significant market acceptance. 

If we are unable to successfully market our products to senior executives of potential customers, our revenue 
growth may be limited. 

With the development of our integrated manufacturing/supply chain solutions and our EOM 

solutions, we frequently must focus on selling the strategic value of our technology to the highest executive 
levels of customer organizations, typically the chief executive officer, chief financial officer or chief 
information officer. If we are not successful at selling and marketing to senior executives, our revenue 
growth and operating results could be materially and adversely affected. 

If we are unable to develop or maintain strategic alliance relationships, our revenue growth may be harmed. 

An element of our growth strategy is to establish strategic alliances with a selected third-party systems 

integrators that market and integrate our products. If our current systems integrators terminate their 
existing relationships with us, or if we do not adequately train a sufficient number of other systems 
integrators, or if potential systems integrators focus their efforts on integrating or co-selling competing 
products to the process industries, our future revenue growth could be limited and our operating results 
could be materially and adversely affected. If our systems integrators fail to implement our solutions for 
our customers properly, the reputations of our products and services and our company could be harmed 
and we might be subject to claims by our customers. We intend to continue to establish business 
relationships with technology companies to accelerate the development and marketing of our products and 

23 

services. To the extent that we are unsuccessful in maintaining our existing relationships and developing 
new relationships, our revenue growth may be materially and adversely affected. 

We may suffer losses on fixed-price engagements. 

We derive a substantial portion of our total revenues from service engagements and a significant 

percentage of these engagements have been undertaken on a fixed-price basis. Under these fixed-price 
engagements, we bear the risk of cost overruns and inflation, and as a result, any of these engagements 
may be unprofitable. In the past, we have had cost overruns on fixed-price service engagements. In
addition, to the extent that we are successful in shifting customer purchases to our integrated suites of 
software and services and we price those engagements on a fixed-price basis, the size of our fixed-price 
engagements may increase, which could cause the impact of an unprofitable fixed-price engagement to 
have a more pronounced impact on our operating results. 

Our business may suffer if we fail to address the challenges associated with international operations. 

We derived approximately 50% of our total revenues from customers outside the United States in the 

fiscal years ended June 30, 2003 and 2004, and approximately 60% of our total revenues from customers 
outside the United States in the fiscal year ended June 30, 2005. We anticipate that revenues from 
customers outside the United States will continue to account for a significant portion of our total revenues 
for the foreseeable future. Our operations outside the United States are subject to additional risks, 
including: 

• unexpected changes in regulatory requirements, exchange rates, tariffs and other barriers; 

• political and economic instability; 

• less effective protection of intellectual property; 

• difficulties in managing distributors and representatives; 

• difficulties in staffing and managing foreign subsidiary operations; 

• difficulties and delays in translating products and product documentation into foreign languages;

• difficulties and delays in negotiating software licenses compliant with accounting revenue

recognition requirements in the United States;

•  difficulties in collecting trade accounts receivable in other countries; and 

• potentially adverse tax consequences. 

The impact of future exchange rate fluctuations on our operating results cannot be accurately 
predicted. In recent years, we have increased the extent to which we denominate arrangements with
international customers in the currencies of the countries in which the software or services are provided. 
From time to time we have engaged in, and may continue to engage in, hedges of a significant portion of 
installment contracts denominated in foreign currencies. Any hedging policies implemented by us may not
be successful, and the cost of these hedging techniques may have a significant negative impact on our 
operating results. 

24 

We may not be able to protect our intellectual property rights, which could make us less competitive and cause us
to lose market share. 

We regard our software as proprietary and rely on a combination of copyright, patent, trademark and 

trade secret laws, license and confidentiality agreements, and software security measures to protect our 
proprietary rights. We have registered or have applied to register several of our significant trademarks in 
the United States and in certain other countries. We generally enter into non-disclosure agreements with
our employees and customers, and historically have restricted access to our software products’ source 
codes, which we regard as proprietary information. In a few cases, we have provided copies of the source 
code for some of our products to customers solely for the purpose of special product customization and 
have deposited copies of the source code for some of our products in third-party escrow accounts as 
security for ongoing service and license obligations. In these cases, we rely on non-disclosure and other 
contractual provisions to protect our proprietary rights. 

The steps we have taken to protect our proprietary rights may not be adequate to deter 

misappropriation of our technology or independent development by others of technologies that are 
substantially equivalent or superior to our technology. Any misappropriation of our technology or
development of competitive technologies could harm our business, and could force us to incur substantial 
costs in protecting and enforcing our intellectual property rights. The laws of some countries in which our 
products are licensed do not protect our products and intellectual property rights to the same extent as the 
laws of the United States.

Third-party claims that we infringe upon the intellectual property rights of others may be costly to defend or settle 
and could damage our business. 

We cannot be certain that our software and services do not infringe issued patents, copyrights, 
trademarks or other intellectual property rights of third parties. Litigation regarding intellectual property 
rights is common in the software industry, and we may be subject to legal proceedings and claims from 
time to time, including claims of alleged infringement of intellectual property rights of third parties by us 
or our licensees concerning their use of our software products and integration technologies and services. 
Although we believe that our intellectual property rights are sufficient to allow us to market our software 
without incurring liability to third parties, third parties may bring claims of infringement against us. 
Because our software is integrated with our customers’ networks and business processes, as well as other 
software applications, third parties may bring claims of infringement against us, as well as our customers 
and other software suppliers, if the cause of the alleged infringement cannot easily be determined. Such 
claims may be with or without merit. Claims of alleged infringement may have a material adverse effect on
our business and may discourage potential customers from doing business with us on acceptable terms, if at 
all. Defending against claims of infringement may be time-consuming and may result in substantial costs 
and diversion of resources, including our management’s attention to our business. Furthermore, a party
making an infringement claim could secure a judgment that requires us to pay substantial damages. A 
judgment could also include an injunction or other court order that could prevent us from selling our 
software or require that we re-engineer some or all of our products. Claims of intellectual property
infringement also might require us to enter costly royalty or license agreements. We may be unable, 
however, to obtain royalty or license agreements on terms acceptable to us or at all. Our business,
operating results and financial condition could be harmed significantly if any of these events occurred, and 
the price of our common stock could be adversely affected. Furthermore, former employers of our current
and future employees may assert that our employees have improperly disclosed confidential or proprietary 
information to us. In addition, we have agreed, and may agree in the future, to indemnify certain of our 
customers against claims that our software infringes upon the intellectual property rights of others. We 
could incur substantial costs in defending ourselves and our customers against infringement claims. In the 
event of a claim of infringement, we, as well as our customers, may be required to obtain one or more 

25 

licenses from third parties, which may not be available on acceptable terms, if at all. Defense of any lawsuit 
or failure to obtain any such required licenses could harm our business, operating results and financial
condition and the price of our common stock. In addition, although we carry general liability insurance, 
our current insurance coverage may not apply to, and likely would not protect us from, all liability that may 
be imposed under these types of claims. 

Because some of our software products incorporate technology licensed from, or provided by, third parties, the loss
of our right to use that technology or defects in that third party technology could harm our business. 

Some of our software products contain technology that is licensed from, or provided by, third parties. 
Any significant interruption in the supply or support of any such third-party software could adversely affect 
our sales, unless and until we can replace the functionality provided by the third-party software. Because 
some of our software incorporates software developed and maintained by third parties, we depend on 
these third parties to deliver and support reliable products, enhance our current software, develop new 
software on a timely and cost-effective basis and respond to emerging industry standards and other 
technological changes. In other instances we provide third-party software with our current software, and 
we depend on these third parties to deliver reliable products, provide underlying product support and 
respond to emerging industry standards and other technological changes. The failure of these third parties 
to meet these criteria could harm our business. 

Our software is complex and may contain undetected errors. 

Like many other complex software products, our software has on occasion contained undetected
errors or “bugs.” Because new releases of our software products are initially installed only by a selected 
group of customers, any errors or “bugs” in those new releases may not be detected for a number of 
months after the delivery of the software. These errors could result in loss of customers, harm to our 
reputation, adverse publicity, loss of revenues, delay in market acceptance, diversion of development 
resources, increased insurance costs or claims against us by customers. 

We may be subject to significant expenses and damages because of liability claims. 

The sale and implementation of certain of our software products and services, particularly in the areas 

of advanced process control and optimization, may entail the risk of product liability claims. Our software 
products and services are often integrated with our customers’ networks and software applications and are 
used in the design, operation and management of manufacturing processes at large facilities, often for 
mission critical applications. Any errors, defects, performance problems or other failure of our software 
could result in significant claims against us for damages or for violations of environmental, safety and other 
laws and regulations. In addition, the failure of our software to perform to customer expectations could 
give rise to warranty claims. Our agreements with our customers generally contain provisions designed to 
limit our exposure to potential product liability claims. It is possible, however, that the limitation of liability 
provisions in our agreements may not be effective as a result of federal, state or local laws or ordinances or 
unfavorable judicial decisions. A substantial product liability claim against us could materially and
adversely harm our operating results and financial condition. Even if our software is not at fault, a product 
liability claim brought against us could be time consuming, costly to defend and harmful to our operations. 
In addition, although we carry general liability insurance, our current insurance coverage may be 
insufficient to protect us from all liability that may be imposed under these types of claims. 

Implementation of our products can be difficult and time-consuming, and customers may be unable to implement 
our products successfully or otherwise achieve the benefits attributable to our products. 

Our products are intended to work with complex business processes. Some of our software, such as 

customized scheduling applications and integrated supply chain products, must integrate with the existing

26 

computer systems and software programs of our customers. This can be complex, time-consuming and 
expensive. As a result, some customers may have difficulty in implementing or be unable to implement 
these products successfully or otherwise achieve the benefits attributable to these products. Customers may 
also make claims against us relating to the functionality, performance or implementation of this software. 
Delayed or ineffective implementation of the software products or related services may limit our ability to 
expand our revenues and may result in customer dissatisfaction, harm to our reputation and may result in 
customer unwillingness to pay the fees associated with these products. 

If we are not successful in attracting and retaining management team members and other highly qualified 
individuals in our industry, we may not be able to successfully implement our business strategy. 

Our ability to establish and maintain a position of technology leadership in the highly competitive 

software market depends in large part upon our ability to attract and retain highly qualified managerial, 
sales and technical personnel. We have recently had a number of changes in our senior management. We
announced the resignation of our senior vice president of global sales in August 2004 and the resignation 
of our president and chief executive officer in November 2004, and we also announced the retirement from 
our board of directors of Lawrence B. Evans, our founder who was serving as chairman of our board, in 
January 2005. Mark Fusco, who became our president and chief executive officer on January 3, 2005, had 
been serving as a member of our board of directors for one year and has not previously served as the chief 
executive officer of a publicly traded company. In addition, several of our executive officers have not 
entered into employment agreements with us. In the future, we may experience the departure of senior 
executives due to competition for talent from start-ups and other companies. 

Our future success depends on a continued, successful management transition and will also depend on 

our continuing to attract, retain and motivate highly skilled employees. Competition for employees in our 
industry is intense. We may be unable to retain our key employees or attract, assimilate or retain other 
highly qualified employees in the future. We have from time to time in the past experienced, and we expect 
to continue to experience in the future, difficulty in hiring and retaining highly skilled employees with
appropriate qualifications. 

Recently enacted and proposed changes in securities laws and regulations will increase our costs.

The Sarbanes-Oxley Act, which became law in July 2002, and new rules subsequently implemented by 

the SEC and the Nasdaq National Market have imposed various new requirements on public companies,
including requiring changes in corporate governance practices. Our management and other personnel will 
need to continue to devote a substantial amount of time to these new compliance initiatives. Moreover, 
these rules and regulations have increased our annual legal and financial compliance costs, have made 
some activities more time-consuming and costly, and could expose us to additional liability. In our fiscal 
year ended June 30, 2005, we incurred approximately $1.4 million in Sarbanes-Oxley related expenses. In
addition, these rules and regulations may make retention and recruitment of qualified persons to serve on 
our board of directors or executive management more difficult. We continue to evaluate and monitor 
regulatory and legislative developments and cannot reliably estimate the timing or magnitude of all costs 
we may incur as a result of the Sarbanes-Oxley Act or other related legislation or regulation. 

27 

Our common stock may experience substantial price and volume fluctuations. 

Risks Related to our Common Stock 

The equity markets have from time to time experienced extreme price and volume fluctuations,

particularly in the high technology sector, and those fluctuations have often been unrelated to the 
operating performance of particular companies. In addition, factors such as our financial performance,
announcements of technological innovations or new products by us or our competitors, as well as market 
conditions in the computer software or hardware industries, may have a significant impact on the market 
price of our common stock. 

In the past, following periods of volatility in the market price of a public company’s securities, 
securities class action litigation has often been instituted against companies. We currently have a putative 
class action lawsuit pending against us in U.S. District Court, District of Massachusetts, as described above 
under “We face risks related to securities litigation and investigations that could have a material adverse 
effect on our business, financial condition and results of operations.”  This type of litigation could result in
substantial costs and a diversion of management’s attention and resources. 

Our common stockholders may experience further dilution as a result of provisions contained in our outstanding
Series D convertible preferred stock and warrants. 

The terms of our outstanding securities may result in substantial dilution to existing common 

stockholders. In August 2003, we issued 300,300 shares of Series D-1 convertible preferred stock, or 
Series D-1 preferred, and delivered cash and 63,064 shares of Series D-2 convertible preferred stock, or 
Series D-2 preferred, in consideration for the surrender of all of our outstanding Series B-I and B-II 
convertible preferred stock, or Series B preferred. Each share of our Series D-1 preferred and Series D-2
preferred, which we refer to collectively as Series D preferred, is currently convertible, at the holder’s 
option, into 100 shares of our common stock and may be converted into additional shares of our common 
stock upon certain events as a result of antidilution provisions in our charter. In addition, we issued 
warrants to purchase up to 7,267,286 shares of common stock, which we refer to as the WD warrants, and 
exchanged existing warrants to purchase 791,044 shares of common stock for warrants to purchase 791,044 
shares of common stock, which we refer to as the WB warrants. The WD warrants and WB warrants are 
currently exercisable for an aggregate of 8,058,330 shares of our common stock and may be converted into 
additional shares upon certain events as a result of antidilution provisions in the warrants. The Series D
preferred, together with the WD warrants and WB warrants, were issued to several investment 
partnerships managed by Advent International Corporation and to holders of our Series B preferred. We
refer to these transactions as the Series D financing. 

In addition to the Series D preferred and the WD and WB warrants, we currently have additional
warrants outstanding that are exercisable to purchase 1,023,474 shares of common stock at an exercise 
price of $9.76 per share and 9,720 shares of common stock at an exercise price of $120.98. Our common
stockholders would be subject to substantial dilution if the Series D preferred is converted into common 
stock or if our outstanding warrants are exercised for common stock.

Each share of Series D preferred is entitled to a cumulative dividend of 8.0% of the stated value per 

share of such Series D preferred per year, payable at the discretion of the board of directors or upon 
conversion of the Series D preferred to common stock or redemption of the Series D preferred. 
Accumulated dividends, when and if declared by our board, could be paid in cash or, subject to specified 
conditions, common stock. If we elect to pay dividends in shares of common stock, we will issue a number 
of shares of common stock equal to the quotient obtained by dividing the dividend payment by the volume 
weighted average of the sale prices of the common stock on the Nasdaq National Market for 20 
consecutive trading days, ending on the fourth trading day prior to the required dividend payment date. 

28 

We are obligated to register for public sale shares of common stock issuable pursuant to our outstanding Series D 
preferred and warrants, and sales of those shares may result in a decrease in the price of our common stock. 

We have granted rights to require that we register under the Securities Act the shares of common 
stock issuable upon the conversion of, or as dividends on, the Series D preferred and upon the exercise of 
either the WB warrants or WD warrants: 

• Series D-1 preferred. The holders of the Series D-1 preferred have the right to demand that we file 
on their behalf up to four registration statements covering shares of common stock issuable upon
(a) conversion of the Series D-1 preferred and (b) exercise of the WD warrants issued to the 
holders of the Series D-1 preferred. 

• Series D-2 preferred. We previously filed a registration statement that covers all of the shares of 

common stock issuable upon (a) conversion of the Series D-2 preferred and (b) exercise of the WB
and WD warrants issued to the initial holders of the Series D-2 preferred. 

In addition, to the extent we elect to pay dividends on the Series D preferred in shares of our common

stock, we are required to register such shares. Any sale of common stock into the public market by the 
holders of the Series D preferred pursuant to a registration statement could cause a decline in the trading 
price of our common stock. 

We may need to raise capital in the future and may not be able to secure adequate funds on terms acceptable to us
or at all. 

We expect that our current cash balances, cash-equivalents, short-term investments, proceeds from 
the anticipated increased sale of installment contracts, funds available under our bank line of credit, and 
cash flows from operations will be sufficient to meet our working capital and capital expenditure 
requirements for at least the next twelve months. We may need to obtain additional financing thereafter or 
earlier, however, if our current plans and projections prove to be inaccurate or our expected cash flows
prove to be insufficient to fund our operations because of lower-than-expected revenues, fewer sales of 
installment contracts, unanticipated expenses, including those related to the class action lawsuits or their 
outcome or settlement, or other unforeseen difficulties. 

Our sales of receivables are an important part of our cash management program. We currently have

arrangements to sell long-term contracts to three financial institutions, General Electric Capital
Corporation, Bank of America and Silicon Valley Bank. These contracts represent amounts due over the 
life of existing term licenses. Under the three arrangements, we sold installments receivable of 
$97.6 million during the fiscal year ended June 30, 2005. In addition, on June 15, 2005, we securitized 
outstanding installment software license receivables totaling $71.2 million. Such securitization was 
structured in manner so that the securitization qualified as a sale. We received $43.8 million of cash and 
retained an interest in the sold receivables valued at $16.6 million. The proceeds of this transaction were 
used to retire a portion of our 51⁄4% convertible subordinated debentures due June 15, 2005, which we 
refer to as the convertible debentures. During the fiscal year ended June 30, 2005, our installments 
receivable balance decreased to $24.9 million at June 30, 2005 from $90.8 million at June 30, 2004. Our 
ability to continue these arrangements or replace them with similar arrangements is important to maintain
adequate funding. If there is insufficient interest from third parties in purchasing our installments
receivable contracts, our ability to generate cash required to meet our financial obligations may be 
impaired. If we cannot generate sufficient cash to meet these obligations through the sales of our 
installments receivable contracts, we may be required to incur additional indebtedness or raise additional 
capital. 

Our ability to obtain additional financing will depend on a number of factors, including market 
conditions, our operating performance and investor interest. These factors may make the timing, amount, 

29 

terms and conditions of any financing unattractive. In addition, the uncertain outcome of the class action 
lawsuit impairs our ability to obtain additional financing. Until this lawsuit is resolved, or if any resolution 
is materially adverse to us, we expect our ability to obtain additional financing will be substantially
impaired. If adequate funds are not available or are not available on acceptable terms, we may have to 
forego strategic acquisitions or investments, reduce or defer our development activities, or delay our 
introduction of new products and services. Any of these actions may seriously harm our business and 
operating results. 

The holders of our Series D preferred and WB and WD warrants own a substantial portion of our capital stock 
that may afford them significant influence over our affairs. 

As of June 30, 2005, the Series D preferred (as converted to common stock) represented 41.5% of our 

outstanding common stock and the WB and WD warrants were exercisable for a number of shares 
representing 9.2% of our outstanding common stock (ignoring certain limitations on the ability to convert 
such shares or exercise such warrants). As a result, the holders of the Series D preferred and the WB and 
WD warrants, if acting together, would have the ability to delay or prevent a change in control of our 
company that may be favored by other stockholders and otherwise exercise significant influence over all 
corporate actions requiring stockholder approval, irrespective of how our other stockholders may vote, 
including: 

• any amendment of our certificate of incorporation or bylaws; 

• the approval of some mergers and other significant corporate transactions, including a sale of 

substantially all of our assets; or 

• the defeat of any non-negotiated takeover attempt that might otherwise benefit the public 

stockholders. 

In addition, the holders of the Series D-1 preferred have elected three of our non-employee board 

members. Accordingly, the holders of our Series D-1 preferred may be able to exert substantial influence 
over matters submitted for board approval. 

Our corporate documents and provisions of Delaware law may prevent a change in control or management that
stockholders may consider desirable. 

Section 203 of the Delaware General Corporation Law and our charter and by-laws contain provisions 

that might enable our management to resist a takeover of our company. These provisions could have the 
effect of delaying, deferring, or preventing a change in control of our company or a change in our 
management that stockholders may consider favorable or beneficial. These provisions could also 
discourage proxy contests and make it more difficult for you and other stockholders to elect directors and 
take other corporate actions. These provisions could also limit the price that investors might be willing to 
pay in the future for shares of our common stock.

30 

Item 2.

Properties

Our principal offices occupy approximately 110,000 square feet of office space in Cambridge, 
Massachusetts. The lease of this office space expires on September 30, 2012. We have agreements to sub-
lease approximately 14,000 square feet of this space that expire throughout 2008. We are actively seeking 
to sub-lease an additional 50,000 square feet of this space. We also lease space for our Houston, Texas 
facilities. This lease encompasses approximately 90,000 square feet and expires in July 2016. In addition to 
these two facilities we and our subsidiaries also lease office space in Gaithersburg, Maryland; 
Lawrenceville, New Jersey; New Providence, New Jersey; Midlothian, Virginia; Bothell, Washington; 
Buenos Aires, Argentina; LaHulpe, Belgium; Sao Paulo, Brazil; Calgary, Alberta, Canada; Beijing, China;
Cambridge, England; Warrington, England; Dusseldorf, Germany; Wiesbaden, Germany; Pune, India; 
Pisa, Italy; Tokyo, Japan; Kuala Lumpur, Malaysia; Mexico City, Mexico; Best, The Netherlands;
Singapore; Seoul, South Korea; Barcelona, Spain; and other locations where additional sales and customer 
support offices are located. We believe that our existing and planned facilities are adequate for our needs 
for the foreseeable future and that, if additional space is needed, such space will be available on acceptable
terms. 

Item 3.

Legal Proceedings

U.S. Attorney’s Office Investigation 

On October 29, 2004, we announced that we had received a subpoena from the U.S. Attorney’s Office 

for the Southern District of New York requesting documents relating to transactions to which we were a 
party during 2000 to 2002, associated documents dating from January 1, 1999, and additional materials. We 
have cooperated fully with the subpoena requests and in the investigation by the U.S. Attorney’s Office. 

Class Action Lawsuits 

In November 2004, two putative class action lawsuits were filed against us in the United States District 

Court District of Massachusetts, captioned, respectively, Fener v. Aspen Technology, Inc., et. al., Civil 
Action No. 04-12375 (D. Mass.) (filed November 9, 2004) and Stockmaster v. Aspen Technology, Inc., 
et. al., Civil Action No. 04-12387 (D. Mass.) (filed November 10, 2004), which we refer to as the 
class actions. The class actions allege, among other things, that we violated Section 10(b) of the Exchange 
Act and Rule 10b-5 promulgated thereunder in connection with various statements about our financial 
condition for fiscal years 2000 through 2004. On February 2, 2005, the court consolidated the cases under 
the caption Aspen Technology, Inc. Securities Litigation, Civil Action No. 04-12375 (D. Mass.), and 
appointed The Operating Engineers and Construction Industry and Miscellaneous Pension Fund (Local
66) and City of Roseville Employees’ Retirement System as lead plaintiff. On August 26, 2005, the 
plaintiffs filed a consolidated amended complaint containing allegations materially similar to the prior 
complaints and purporting to represent a putative class of persons who purchased our common stock 
between December 7, 1999 and March 15, 2005. The defendants have sixty days from the filing of the
consolidated amended complaint to move, answer or otherwise respond to the complaint. We believe that 
plaintiffs’ claims lack merit and intend to litigate the dispute vigorously. We are currently unable to
determine whether resolution of these matters will have a material adverse impact on our financial 
position or results of operations, or reasonably estimate the amount of the loss, if any, that may result from
resolution of these matters. However, the ultimate outcome could have a material adverse effect on our 
financial position or results of operations. 

Derivative Action 

On December 1, 2004, a purported derivative action was filed in the United States District Court of 
Massachusetts, captioned Caviness v. Evans, et. al., Civil Action No. 04-12524 (D. Mass.). The complaint, 
as subsequently amended, alleged, among other things, that the former and current director and officer 

31 

defendants caused us to issue false and misleading financial statements, and brought derivative claims for 
the following: 

• breach of fiduciary duty for insider trading; 

• breach of fiduciary duty; 

• abuse of control; 

•  gross mismanagement;

• waste of corporate assets; and 

•  unjust enrichment. 

We moved to dismiss the complaint pursuant to Fed. R. Civ. P. 23.1 for failure to make a demand on our 
board of directors and for failing to allege particularized facts showing why plaintiff’s failure to make a 
demand should be excused. On August 18, 2005, the court granted our motion and dismissed the case with
prejudice. 

On April 12, 2005, we received a letter dated March 22, 2005 alleging that our officers and directors 

failed to disclose and misrepresented that we inappropriately recognized revenues in the 2000 to 2002
fiscal years, and that we should commence suit for relief, including requiring certain present and former 
officers to return remuneration paid to them while in breach of their fiduciary duties to our company. We 
are currently unable to determine whether resolution of this matter will have a material adverse impact on 
our financial position or results of operations, or reasonably estimate the amount of the loss, if any, that 
may result from resolution of this matter. However, the ultimate outcome could have a material adverse 
effect on our financial position or results of operations. 

Item 4.

Submission of Matters to a Vote of Security Holders

We held our annual meeting of stockholders for 2004 on May 26, 2005 to elect two Class II directors 

to hold office until our 2007 annual meeting of stockholders. Holders of our common stock and Series D-2 
preferred voted together on Proposal One, the election of directors, at the annual meeting. Holders of our 
Series D-1 preferred are entitled to elect their own designees to our board of directors and are not entitled 
to vote with the holders of our common stock and Series D-2 preferred in the general election of directors 
at the annual meeting. Holders of our common stock, Series D-1 preferred and Series D-2 preferred voted 
together on Proposal Two, the adoption of our 2005 stock incentive plan. 

Proxies for the meeting were solicited in accordance with Section 14(a) of the Exchange Act pursuant

to a proxy statement dated April 18, 2005. There was no solicitation in opposition to the persons 
nominated by the board of directors, and both of the board’s nominees were elected. The votes cast by 
proxy or in person with respect to the election of directors, as determined by the final report of the 
inspectors, are set forth below. There were no abstentions or broker non-votes with respect to the election
of directors. 

Nominee 
Mark E. Fusco. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Gary E. Haroian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Votes for 
Nominee 
40,226,804 
39,133,305

Votes 

  Withheld
1,016,770
2,110,269

Mr. Fusco, a director since December 2003 and our President and Chief Executive Officer since 
January 2005, was formerly a Class III director and was reappointed by our board as a Class II director to 
fill the seat vacated by David L. McQuillin, who resigned as a director and as our President and Chief 
Executive Officer in November 2004. Michael Pehl, the designee of the Series D-1 holders serving as a 
Class II director, was re-elected by the Series D-1 holders to hold office until our 2007 annual meeting of 

32 

 
 
 
stockholders. The following directors of the company continued in office after the annual meeting:
Donald P. Casey, Stephen M. Jennings, Douglas A. Kingsley, and Joan C. McArdle. 

Stockholders also approved the adoption of our 2005 stock incentive plan, which provides for the 
reservation of 4,000,000 shares of common stock (subject to equitable adjustment in the event of stock 
splits and similar events) for issuance under the plan. A total of 49,744,624 votes were cast in favor of this 
proposal, a total of 9,867,499 votes were cast against this proposal and a total of 465,465 votes abstained. 

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity

PART II

Securities 

Market Information 

Our common stock is traded on the Nasdaq National Market under the symbol “AZPN.”  The 

following table sets forth, for the periods indicated, the high and low sales prices per share of our common 
stock as reported by the Nasdaq National Market. 

Fiscal 2004:
First Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Second Quarter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fourth Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fiscal 2005:
First Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Second Quarter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fourth Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  High

Low 

$ 5.26 
10.84 
12.32 
9.45 

$2.27 
3.89 
7.55 
5.49 

$ 7.40 
7.78 
6.78 
5.97 

$4.44 
5.25 
5.08 
4.27 

Holders 

As of September 1, 2005, there were approximately 1,113 holders of our common stock. 

Dividends 

We have never declared or paid cash dividends on our common stock. We currently intend to retain 

all of our earnings, if any, in the foreseeable future, except to the extent we pay quarterly dividends on our 
preferred stock in cash rather than in common stock. In addition, under the terms of our January 2003 loan 
arrangement with Silicon Valley Bank, we are prohibited from paying any dividends on our stock, with the 
exception of dividends paid in common stock or dividends on our preferred stock paid in cash, provided 
that we are not in default under the loan arrangement. Any future determination relating to our dividend
policy will be made at the discretion of our board of directors and will depend on a number of factors, 
including our future earnings, capital requirements, financial condition and future prospects and such 
other factors as the board of directors may deem relevant. 

33 

Securities Authorized for Issuance Under Equity Compensation Plans 

The following table provides information about the securities authorized for issuance under our equity 

compensation plans as of June 30, 2005:

Equity Compensation Plan Information 

(A) 

(B) 

Number of securities to
be issued upon exercise
of outstanding options,
warrants and rights 

Weighted-average
exercise price of
outstanding options,
warrants and rights

(C) 
Number of securities 
remaining available
for future issuance
under equity compensation
plans (excluding securities
reflected in column (A)) 

Plan category 
Equity compensation plans approved 
by security holders. . . . . . . . . . . . . . . .

Equity compensation plans not 

approved by security holders. . . . . . .  
Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

11,037,716

— 
11,037,716

$8.56

— 
$8.56

10,096,779

— 
10,096,779

Amounts reflected in column (A) include an aggregate of 54,021 shares that are issuable upon 
exercise of outstanding options that we assumed in connection with various acquisitions. The weighted 
average exercise price of the excluded options is $10.93. 

Equity compensation plans approved by security holders consist of our 1988 non-qualified stock 
option plan, our 1995 stock option plan, our 1995 directors plan, our 1998 employees’ stock purchase plan, 
our 1996 special stock option plan our 2001 stock option plan and our 2005 stock incentive plan. As of 
June 30, 2005, no awards had been granted under the 2005 stock incentive plan. 

The securities remaining available for future issuance under equity compensation plans approved by 

our security holders consist of: 

• 2,834,058 shares of common stock issuable under our 1998 employees’ stock purchase plan;

• 2,285,494 shares of common stock issuable under our 1995 stock option plan, pursuant to which the 
number of shares attributable to the exercise of options granted under such plan plus the number of 
shares then issuable upon exercise of outstanding options granted under such plan shall at no time 
exceed 3,600,000, increased automatically at each of July 1, 1998, July 1, 1999 and July 1, 2000 by an
amount equal to 5% of the common stock outstanding on the preceding June 30, provided that the 
number of shares purchasable under incentive stock options issued under our 1995 stock option 
plan may not exceed 6,000,000;

• 406,579 shares of common stock issuable under our 1995 director plan; 

• 101,441 shares of common stock issuable under our 1996 special stock option plan;

• 469,207 shares of common stock issuable under our 2001 stock option plan, pursuant to which the 

number of shares attributable to the exercise of options granted under such plan plus the number of 
shares then issuable upon exercise of outstanding options granted under such plan shall at no time 
exceed 4,000,000, increased automatically at each of July 1, 2002, July 1, 2003 and July 1, 2004 by 
the number equal to 5% of the common stock outstanding on the preceding June 30, rounded down
to the largest even multiple of 10,000, provided that the number of shares purchasable under 
incentive stock options issued under our 2001 stock option plan may not exceed 8,000,000 shares; 

• 4,000,000 shares of common stock issuable under our 2005 stock incentive plan, the adoption of 

which was approved by our stockholders on May 26, 2005. 

Each of the options outstanding under these equity compensation plans has a term of ten years. 

Options issuable under the 2005 stock incentive plan will have a maximum term of seven years. 

34 

 
 
Recent Sales of Unregistered Securities

None. 

Item 6.

Selected Financial Data

The following selected consolidated financial data have been derived from our consolidated financial

statements. This data should be read in conjunction with the Consolidated Financial Statements and Notes 
thereto, and “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of 
Operations.” 

The consolidated statement of operations data for the years ended June 30, 2003, 2004 and 2005 and 
the consolidated balance sheet data as of June 30, 2004 and 2005 are derived from consolidated financial 
statements audited by Deloitte & Touche LLP. 

2001

Year Ended June 30, 
2003
(In thousands, except per share data) 

2004

2002

2005

Consolidated Statement of Operations Data: 
Revenues: 
Software licenses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service and other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cost of revenues: 
Cost of software licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of service and other . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of technology related intangible assets . . . . .
Impairment of technology related intangible and 

$134,952  $ 136,377  $  162,354  $ 158,661   $ 129,233
140,334
269,567

184,102  
346,456  

179,445 
314,397 

174,335  
332,996  

186,005
322,382

11,856 
115,795 
2,926 

11,830
118,772
5,042

13,916  
106,868  
8,219  

15,577  
99,183  
7,270  

16,864
82,638
7,112

computer software development assets . . . . . . . . . . . . . .
Total cost of revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . .

—
130,577 

1,169
136,813

8,704  
137,707  

3,250  
125,280  

—
106,614

Gross profit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating costs:
Selling and marketing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Research and development . . . . . . . . . . . . . . . . . . . . . . . . . .
General and administrative . . . . . . . . . . . . . . . . . . . . . . . . . .
Long-lived asset impairment charges . . . . . . . . . . . . . . . . . .
Restructuring charges and FTC legal costs . . . . . . . . . . . . .
Charges for in-process research and development . . . . . . .
Loss (gain) on sales and disposals of assets . . . . . . . . . . . . .
Total operating costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

183,820 

185,569

208,749  

207,716  

162,953

113,808 
69,138 
28,238 
—
6,969 
9,915 
99
228,167 

114,755
74,176
29,673
—
14,914
14,900
(346)
248,072

105,879  
65,143  
29,644  
105,543  
41,080  
—  
(52)
347,237  

100,028  
58,955  
32,727  
967  
20,085  
—  
(879 ) 
211,883  

96,187
47,236
49,175
—
24,907
—
13,635
231,140

Income (loss) from operations . . . . . . . . . . . . . . . . . . . . . . .

(44,347) 

(62,503) 

(138,488 ) 

(4,167 ) 

(68,187)

Interest income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Write-off of investments . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign currency exchange gain (loss) . . . . . . . . . . . . . . . . .
Income (loss) before provision for (benefit from) income
taxes and equity in earnings from joint ventures. . . . . . .
(Provision for) benefit from income taxes . . . . . . . . . . . . . .
Equity in earnings from joint ventures . . . . . . . . . . . . . . . . .
Net income (loss) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accretion of preferred stock discount and dividend . . . . . .
Net income (loss) applicable to common stock holders . . .
Basic and diluted net income (loss) per share . . . . . . . . . . .
Weighted average shares outstanding—Basic and diluted.

10,075 
(5,469) 
(5,000) 
(81)

6,209
(5,591) 
(8,923) 
(1,424)

8,191  
(7,132 ) 
—  
(195 ) 

7,296  
(4,940 ) 
—  
252  

6,168
(4,195)
—
618

(44,822) 
7,164 
849 
(36,809) 

(72,232) 
(3,599) 
(166) 
(75,997) 
(6,301)

(137,624 ) 
(1,076 ) 
(514 ) 
(139,214 ) 
(9,184 ) 

(65,596)
(3,776)
—
(69,372)
(14,450)
$ (36,809)  $ (82,298)  $ (148,398 )  $ (28,164 )  $ (83,822)
(1.98)
$
42,381

(1,559 ) 
(19,896 ) 
(351 ) 
(21,806 ) 
(6,358 ) 

(1.23) $

(0.69) $

(2.55) $

(3.86) $

29,941 

38,476 

40,575 

32,308

—

35 

 
2001 

2002

June 30, 
2003
(In thousands) 

2004 

2005

Consolidated Balance Sheet Data: 
Cash and cash-equivalents . . . . . . . . . . . . . . . . . . .   $ 36,633
100,366
Working capital . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total assets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
393,229
88,149 
Long-term obligations, less current maturities. .  
Redeemable convertible preferred stock . . . . . .
—
169,151
Total stockholders’ equity (deficit) . . . . . . . . . . .

$ 33,571  $ 51,567  $107,677
15,880
351,734
1,952 
106,761
28,363

43,607 
537,840 
92,135 
—
222,037

36,788 
374,266 
89,911 
57,537
30,955

$ 68,149
3,976
244,242
338
121,210
(49,085)

In July 2001, we adopted the FASB’s SFAS No. 142, “Goodwill and Other Intangible Assets.” Under 

this statement, goodwill and certain other intangible assets determined to have an indefinite life were no 
longer amortized as of the date of adoption. General and administrative costs for the year ended June 30, 
2001 include amortization of goodwill and acquired assembled workforce of $2.6 million. 

The amounts included in service and other revenues and cost of service and other for the 

reimbursement of out-of-pocket expenses, as required by Emerging Issues Task Force Issue No. 01-14, 
“Income Statement Characterization of Reimbursements Received for ‘Out-of-Pocket’ Expenses 
Incurred” for the years ended June 30, 2001, 2002, 2003, 2004 and 2005 were $16.3 million, $18.8 million, 
$19.0 million, $16.9 million and $10.8 million, respectively. 

Basic and diluted net income (loss) per share and weighted average shares outstanding in the 
preceding table have been computed as described in note 2(i) to the Consolidated Financial Statements 
included elsewhere in this Form 10-K. We have never declared or paid cash dividends on our common 
stock. 

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Overview 

Since our founding in 1981, we have developed and marketed software and services to companies in

the process industries. In addition to internally generated growth, we have acquired a number of 
businesses, including Hyprotech on May 31, 2002. We acquired Hyprotech in a transaction accounted for
as a purchase. Our operating results include the operating results of Hyprotech only for periods 
subsequent to the date of acquisition. 

Divestitures 

In June 2002, we received a letter from the FTC notifying us that it had commenced an investigation 

of the competitive effects of the Hyprotech acquisition. On August 7, 2003, the FTC announced that it had 
authorized its staff to file a civil administrative complaint alleging that our acquisition of Hyprotech was 
anti-competitive in violation of Section 5 of the Federal Trade Commission Act and Section 7 of the 
Clayton Act. The FTC staff filed its complaint the same day. On December 21, 2004, the FTC approved a 
consent decree with us, which consent decree constitutes a complete and final settlement of the FTC’s 
complaint against us relating to our acquisition of Hyprotech in May 2002. The FTC’s approval also 
constitutes approval of the transactions contemplated by the purchase and sale agreement that we and our 
subsidiaries Hyprotech Company, AspenTech Canada Ltd., AspenTech Ltd. and Hyprotech UK Ltd. 
entered into on October 6, 2004 with Honeywell and its subsidiaries Honeywell Control Systems Limited 
and Honeywell Limited-Honeywell Limitee, as well as the transactions contemplated by the purchase and 
sale agreement that we entered into with Bentley Systems. 

36 

 
 
The sale of the AXSYS product line to Bentley Systems was completed on July 21, 2004. We do not 

retain any rights to the AXSYS product line, and, through July 20, 2006, we are prohibited from soliciting 
business to replace AXSYS licenses held by certain customers, although we may accept Zyqad orders from 
such customers so long as we do not violate our nonsolicitation obligations. 

The sale of our operator training business and ownership of rights to the intellectual property to the 

Hyprotech engineering products to Honeywell were completed on December 23, 2004. Under the terms of 
the transactions with Honeywell: 

• we retain a perpetual, worldwide, royalty-free license to the entire Hyprotech engineering software 
product line and have the right to continue to develop and sell the Hyprotech engineering products, 
other than AXSYS, which was sold to Bentley Systems; 

• we agreed not to compete in the operator training business for three years; we retain our customer 

licenses for HYSYS and related products; 

• we entered into a two-year support agreement to provide Honeywell with source code to new 

releases of the Hyprotech products provided to customers under standard software maintenance
services agreements;

• we agreed to a cash payment of $6.0 million from Honeywell to us, $1.2 million of which is subject 

to holdback and may be released to us, less any adjustments for uncollected billed accounts 
receivable and unbilled accounts receivable; and 

• we transferred and Honeywell assumed, as of the closing date, $4.0 million in accounts receivable 

relating to the operator training business. 

Significant Events—Year Ended June 30, 2005

Three Months Ended June 30, 2005 

In May 2005, we executed a plan to reduce our operating costs, primarily involving the reduction of 
headcount. This resulted in a restructuring charge totaling $3.8 million, included in restructuring charges 
and FTC legal costs (as described below). 

On June 15, 2005, we paid $58.2 million to retire all of the outstanding principal amount of our
outstanding convertible debentures, together with interest accrued thereon. We funded this payment with 
(a) $8.6 million of our existing cash, (b) $5.8 million obtained from our sales of installments receivable 
under our existing receivables programs with Silicon Valley Bank and GE Capital Corporation, and 
(c) $43.8 million through the sale of additional installments receivable under the arrangement described 
below. 

On June 15, 2005, we securitized outstanding installment software license receivables totaling
$71.2 million. Such securitization was structured in manner so that the securitization qualified as a sale. 
We received $43.8 million of cash and retained an interest in the sold receivables valued at $16.6 million. 
We also retained certain limited recourse obligations relative to the receivables valued at approximately 
$1.0 million. Overall, the transaction (including $2.1 million in aggregate fees and expenses, including fees 
of the lenders’ agent and fees of our outside legal counsel and financial advisors) resulted in a loss of 
$13.9 million in the quarter ended June 30, 2005 and was recorded as a loss on sales and disposals of assets. 

Three Months Ended March 31, 2005 

On March 15, 2005 we announced completion of our audit committee investigation and the filing of 
our restated annual report on Form 10-K/A for the fiscal year ended June 30, 2004, and the filing of our 
quarterly reports on Form 10-Q for the quarters ended September 30, 2004 and December 31, 2004. 

37 

Three Months Ended December 31, 2004 

On December 21, 2004, the FTC approved our proposed consent decree, which constituted a 

complete and final settlement of the FTC’s complaint against us relating to our acquisition of Hyprotech in 
May 2002. The FTC’s approval also constitutes approval of the transactions contemplated by the purchase 
and sale agreement that we and our subsidiaries Hyprotech Company, AspenTech Canada Ltd., 
AspenTech Ltd. and Hyprotech UK Ltd. entered into on October 6, 2004 with Honeywell and its 
subsidiaries Honeywell Control Systems Limited and Honeywell Limited-Honeywell Limitee. 

On December 23, 2004, we and our subsidiaries completed the transactions with Honeywell 

contemplated by this purchase agreement, which relates to the sale of our operator training business and 
ownership of rights to the intellectual property to the Hyprotech engineering products to Honeywell 
International. Under the terms of the transactions: 

• we retain a perpetual, worldwide, royalty-free license to the entire Hyprotech engineering software 
product line and have the right to continue to develop and sell the Hyprotech engineering products, 
other than AXSYS, which was sold to Bentley Systems; 

• we retain our customer licenses for HYSYS and related products; 

• our Aspen RefSYS and Aspen Oil & Gas solutions were not transferred as part of the transactions; 

• we agreed to a cash payment of approximately $6.0 million from Honeywell in consideration of the 
transfer of our operator training services business, our covenant not to compete in the operator 
training business for three years, and the transfer of ownership of the intellectual property of our
Hyprotech engineering products, $1.2 million of which payment will be released to us in June 2005
(less any adjustments for uncollected billed accounts receivable and unbilled accounts receivable); 

• we transferred and Honeywell assumed, as of the closing date, $4.0 million in accounts receivable 

relating to the operator training business; and 

• we entered into a two-year support agreement with Honeywell under which we agreed to provide 
Honeywell with source code to new releases of the Hyprotech products provided to customers 
under standard software maintenance services agreements. 

The Honeywell transaction resulted in a deferred gain of $0.2 million, which is subject to a potential 
increase of $1.2 million upon resolution of the holdback payment and will be amortized over the two-year 
life of the support agreement. 

Three Months Ended September 30, 2004 

During the three months ended September 30, 2004, we recorded $21.7 million in restructuring 

charges. Of this amount, $14.4 million related to headcount reductions and facility consolidations
associated with the June 2004 restructuring plan that did not qualify for accrual at June 30, 2004, as well as 
$7.3 million in revisions to prior restructuring accruals, offset in part by a $0.2 million adjustment related 
to accretion of the discounted restructuring accrual. 

On July 21, 2004, we completed the sale of the AXSYS product line to Bentley Systems as set forth in

the FTC consent decree. We did not retain any rights to the AXSYS product line, and, through July 20, 
2006, are prohibited from soliciting business to replace AXSYS licenses held by certain customers, 
although we may accept Zyqad orders from such customers so long as we do not violate our non-
solicitation obligations. We recorded a gain of $0.3 million in the accompanying consolidated condensed 
statement of operations for the three months ended September 30, 2004 associated with the sale of this 
product line. 

38 

Summary of Restructuring Accruals 

Fiscal 2005 Restructuring Plan 

In May 2005 we initiated a plan to consolidate several corporate functions and to reduce our 

operating expenses. The plan to reduce operating expenses primarily resulted in headcount reductions, and
also included the termination of a contract and the consolidation of facilities. These actions resulted in an
aggregate restructuring charge of $3.8 million, recorded in the fourth quarter of fiscal 2005. 

As of June 30, 2005, there was $2.5 million remaining in accrued expenses relating to the remaining 

severance obligations and lease payments. During the year ended June 30, 2005, the following activity was 
recorded (in thousands): 

Fiscal 2005 Restructuring Plan
Restructuring charge . . . . . . . . . . . . . . . . . . . . . . . . .
Fiscal 2005 payments . . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2005 . . . . . . . . . . . . . . .
Expected final payment date . . . . . . . . . . . . . . . . . . .

Fiscal 2004 Restructuring Plan 

Closure/ 
Consolidation
of Facilities 
84
$
—
84
May 2007

$

Employee 
Severance, 
Benefits, and
Related Costs
3,465
$
(1,005)
2,460
July 2006

$

Contract 
Termination 
Costs 
$ 300

(300)   

$ —

Total 
$ 3,849
(1,305)
$ 2,544

In June 2004, we initiated a plan to reduce our operating expenses in order to better align our 
operating cost structure with the then-current economic environment and to improve our operating 
margins. The plan to reduce operating expenses resulted in the consolidation of facilities, headcount 
reductions, and the termination of operating contracts. These actions resulted in an aggregate 
restructuring charge of $23.5 million, recorded in the fourth quarter of fiscal 2004. During the year ended 
June 30, 2005, we recorded $14.4 million related to headcount reductions and facility consolidations 
associated with the June 2004 restructuring plan that did not qualify for accrual at June 30, 2004. In 
addition, we recorded $0.4 million in restructuring charges related to the accretion of the discounted 
restructuring accrual and a $0.8 million decrease to the accrual related to changes in estimates of 
severance benefits and sub-lease terms. 

39 

 
 
 
 
As of June 30, 2005, there was $8.7 million remaining in accrued expenses relating to the remaining 

severance obligations and lease payments. During the year ended June 30, 2005, the following activity was 
recorded (in thousands): 

Fiscal 2004 Restructuring Plan
Restructuring charge . . . . . . . . . . . . . . .  
Fiscal 2004 payments . . . . . . . . . . . . .
Impairment of assets . . . . . . . . . . . . .
Accrued expenses, June 30, 2004 . . . . .
Restructuring charge . . . . . . . . . . . . .
Impairment of assets . . . . . . . . . . . . .
Fiscal 2005 payments . . . . . . . . . . . . .
Restructuring charge—Accretion . .
Change in estimate—Revised 

assumptions . . . . . . . . . . . . . . . . . . .  

Accrued expenses, June 30, 2005 . . . . .
Expected final payment date . . . . . . . . .

Fiscal 2003 Restructuring Plan 

Closure/ 
Consolidation 
of Facilities and 
Contract exit costs 

Employee 
Severance, 
Benefits, and 
Related Costs 

$

$

20,484 
(8,435)
—
12,049
9,132
—
(12,915)
446 

1,191
(280)
—
911
4,349
—
(4,534)
3 

$

(287)
8,425
September 2012

$

(497)
232
December 2006

Asset 
Impairments 
$ 1,776
—
(1,776)  
—
968
(968)  
—
— 

Total 
$  23,451
(8,715)
(1,776)
12,960
14,449
(968)
(17,449)
449

—

(784)
$ — $ 8,657

In October 2002, we initiated a plan to further reduce operating expenses in response to first quarter 

revenue results that were below expectations and to general economic uncertainties. In addition, we 
revised revenue expectations for the remainder of the fiscal year and beyond, primarily related to the 
manufacturing/supply chain product line, which had been affected the most by the economic conditions. 
The plan to reduce operating expenses resulted in headcount reductions, consolidation of facilities, and 
discontinuation of development and support for certain non-critical products. These actions resulted in an
aggregate restructuring charge of $28.1 million. During fiscal 2004, we recorded a $4.9 million decrease to 
the accrual related to revised assumptions associated with lease exit costs, particularly the buyout of a 
remaining lease obligation, and severance obligations. During fiscal 2005, we recorded a $6.9 million 
increase to the accrual primarily due to a change in the estimate of the facility vacancy term, extending to 
the term of the lease. 

40 

 
 
 
 
 
As of June 30, 2005, there was $11.9 million remaining in accrued expenses relating to the remaining 

severance obligations and lease payments. The components of the restructuring plan are as follows (in
thousands): 

Fiscal 2003 Restructuring Plan
Restructuring charge . . . . . . . . . . . . . . . . . .
Additional impairment of assets. . . . . . .
Fiscal 2003 payments . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2003 . . . . . . . .
Fiscal 2004 payments . . . . . . . . . . . . . . . .
Change in estimate—Revised 

assumptions . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2004 . . . . . . . .
Fiscal 2005 payments . . . . . . . . . . . . . . . .
Change in estimate—Revised 

assumptions . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2005 . . . . . . . .
Expected final payment date . . . . . . . . . . . .

Fiscal 2002 Restructuring Plan 

$

Closure/ 
Consolidation 
of Facilities 

17,347
—
(3,548)
13,799
(2,567)

(4,507)
6,725
(2,213)

Employee 
Severance, 
Benefits, and 
Related Costs
10,028
$
—
(7,297)
2,731
(2,170)

(269)
292
(63)

Impairment
  of Assets and
Disposition 
Costs 

$

714  
866
—
1,580
(770)

(134)
676
(403)

$

7,186
11,698
September 2012

$

(69)
160
Dec 2005

$

(195)
78
Jan 2006

Total 
$ 28,089
866
(10,845)
18,110
(5,507)

(4,910)
7,693
(2,679)

6,922
$ 11,936

In the fourth quarter of fiscal 2002, we initiated a plan to reduce operating expenses and to 

restructure operations around our two primary product lines, engineering software and 
manufacturing/supply chain software. We reduced worldwide headcount by approximately 10%, or 200
employees, closed and consolidated facilities, and disposed of certain assets, resulting in an aggregate 
restructuring charge of $13.2 million. During fiscal 2004, we recorded a $1.5 million decrease to the accrual 
related to revised assumptions associated with lease exit costs, particularly the buyout of a remaining lease 
obligation, and severance obligations. During fiscal 2005, we recorded a $0.2 million increase to the accrual 
due to changes in estimates of sublease assumptions and severance settlements. 

As of June 30, 2005, there was $0.9 million remaining in accrued expenses relating to the remaining 

severance obligations and lease payments. The components of the restructuring plan are as follows (in
thousands): 

Fiscal 2002 Restructuring Plan
Restructuring charge . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fiscal 2002 payments . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2002 . . . . . . . . . . . . . . . . . .
Fiscal 2003 payments . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2003 . . . . . . . . . . . . . . . . . .
Fiscal 2004 payments . . . . . . . . . . . . . . . . . . . . . . . . . .
Change in estimate—Revised assumptions . . . . . . .
Accrued expenses, June 30, 2004 . . . . . . . . . . . . . . . . . .
Fiscal 2005 payments . . . . . . . . . . . . . . . . . . . . . . . . . .
Change in estimate—Revised assumptions . . . . . . .
Accrued expenses, June 30, 2005 . . . . . . . . . . . . . . . . . .
Expected final payment date . . . . . . . . . . . . . . . . . . . . . .

Closure/ 
Consolidation 
of Facilities 

$

$

4,901 
—
4,901
(695)
4,206
(1,302)
(1,221)
1,683
(994)
93
782
September 2012

Employee 
Severance, 
Benefits, and 
Related Costs 

$

$

8,285 
(1,849)
6,436
(4,748)
1,688
(1,060)
(320)
308
(284)
87
111
December 2005

Total 
$13,186
(1,849)
11,337
(5,443)
5,894
(2,362)
(1,541)
1,991
(1,278)
180
893

$

41 

 
 
 
 
 
 
 
 
 
 
 
Fiscal 1999 Restructuring Plan 

In the fourth quarter of fiscal 1999, we undertook certain actions to restructure our business. The 
restructuring resulted from a lower than expected level of license revenues which adversely affected fiscal 
year 1999 operating results. The license revenue shortfall resulted primarily from delayed decision making
driven by economic difficulties among customers in certain of our core vertical markets. The restructuring 
plan resulted in a pre-tax restructuring charge totaling $17.9 million. During fiscal 2004, we recorded a 
$0.4 million decrease to the accrual related to revised assumptions associated with lease exit costs.

As of June 30, 2005, there was no balance remaining in accrued expenses relating to the restructuring. 

The components of the restructuring plan are as follows (in thousands): 

Employee 
Severance, 

Benefits, and Write-off 
Related Costs
$  4,324
—
(2,386)
1,938
(1,462)
476
(126)
350
— 
(350)
—

Total
of Assets  Other 
$ 17,867
$  259
$  3,060
(8,601)
(101)
(3,060)
(2,467)
(57 )
—
6,799
101
—
(2,967)
(97 )
—
—
4
3,832
— (1,610)
—
2,222
4
—
— 
— 
(250)
(4 )
—
(1,597)
375
—
—

—
—

—
—

—
—

147
522

—
—  
—

—
—  
—

—
— 
—

(4)
(428)
90
(43)
(47)
$ — $ — $ — $ —

Fiscal 1999 Restructuring Plan
Restructuring and other charges . . . . . . . . . . . . . .
Write-off of assets, and other . . . . . . . . . . . . . . .
Fiscal 1999 payments . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 1999 . . . . . . . . . . . . . .
Fiscal 2000 payments . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2000 . . . . . . . . . . . . . .
Fiscal 2001 payments . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2001 . . . . . . . . . . . . . .
Change in estimate—Revised assumptions . . .
Fiscal 2002 payments . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2002 . . . . . . . . . . . . . .

Fiscal 2003 net sublease receipts (lease 

payments) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2003 . . . . . . . . . . . . . .
Fiscal 2004 payments, net of sublease receipts 
(lease payments) . . . . . . . . . . . . . . . . . . . . . . . .
Change in estimate—sub-lease assumptions . .
Accrued expenses, June 30, 2004 . . . . . . . . . . . . . .
Fiscal 2005 payments . . . . . . . . . . . . . . . . . . . . . .
Change in estimate—sub-lease assumptions . .
Accrued expenses, June 30, 2005 . . . . . . . . . . . . . .

Closure/ 
Consolidation
of Facilities 
$10,224 
(5,440)
(24)
4,760
(1,408)
3,352
(1,484)
1,868
(250)
(1,243)
375

147
522

(4)
(428)
90
(43)
(47)
$ —

42 

 
 
Critical Accounting Estimates and Judgments 

Our consolidated financial statements are prepared in accordance with accounting principles generally 

accepted in the United States of America. The preparation of our financial statements requires 
management to make estimates and judgments that affect the reported amounts of assets, liabilities, 
revenues, expenses and related disclosures. We base our estimates on historical experience and various 
other assumptions that we believe to be reasonable under the circumstances, the results of which form the 
basis for making judgments about the carrying values of assets and liabilities that are not readily apparent 
from other sources. Actual results may differ from these estimates under different assumptions or 
conditions. The significant accounting policies that we believe are the most critical to aid in fully 
understanding and evaluating our reported financial results include the following: 

• revenue recognition for both software licenses and fixed-fee consulting services; 

• impairment of long-lived assets, goodwill and intangible assets; 

• accrual of legal fees associated with outstanding litigation; 

• accounting for income taxes; 

• allowance for doubtful accounts; and 

• accounting for securitization of installments receivable. 

Revenue Recognition—Software Licenses 

We recognize software license revenue in accordance with SOP No. 97-2, “Software Revenue 
Recognition,” as amended by SOP No. 98-4 and SOP No. 98-9, as well as the various interpretations and 
clarifications of those statements. These statements require that four basic criteria must be satisfied before 
software license revenue can be recognized:

• persuasive evidence of an arrangement between ourselves and a third party exists;

• delivery of our product has occurred; 

• the sales price for the product is fixed or determinable; and 

• collection of the sales price is probable. 

Our management uses its judgment concerning the satisfaction of these criteria, particularly the 
criteria relating to the determination of whether the fee is fixed and determinable and the criteria relating
to the collectibility of the receivables, particularly the installments receivable, relating to such sales. In
addition, our management uses its judgment in applying these two criteria to reseller transactions where, 
specifically, revenue is only recognized upon delivery to the end user, since the determination of whether 
the fee is fixed or determinable and whether collection if probable is more difficult. Should changes and 
conditions cause management to determine that these criteria are not met for certain future transactions, 
all or substantially all of the software license revenue recognized for such transactions could be deferred. 

Revenue Recognition—Fixed-Fee Consulting Services

We recognize revenue associated with fixed-fee service contracts in accordance with the proportional 
performance method, measured by the percentage of costs (primarily labor) incurred to date as compared 
to the estimated total costs (primarily labor) for each contract. When a loss is anticipated on a contract, the 
full amount of the anticipated loss is provided currently. Our management uses its judgment concerning
the estimation of the total costs to complete the contract, considering a number of factors including the 
experience of the personnel that are performing the services and the overall complexity of the project. We 
have a significant amount of experience in the estimation of the total costs to complete a contract and have 

43 

not typically recorded material losses related to these estimates. We do not expect the accuracy of our 
estimates to change significantly in the future. Should changes and conditions cause actual results to differ 
significantly from management’s estimates, revenue recognized in future periods could be adversely 
affected. 

Impairment of Long-lived Assets, Goodwill and Intangible Assets 

In accordance with SFAS No. 144, “Accounting for the Impairment or Disposal of Long-Lived
Assets,” we review the carrying value of long-lived assets when circumstances dictate that they should be 
reevaluated, based upon the expected future operating cash flows of our business. These future cash flow 
estimates are based on historical results, adjusted to reflect our best estimate of future markets and 
operating conditions, and are continuously reviewed based on actual operating trends. Historically, actual 
results have occasionally differed from our estimated future cash flow estimates. In the future, actual 
results may differ materially from these estimates, and accordingly cause a full impairment of our long-
lived assets. 

In accordance with SFAS No. 142, “Goodwill and Other Intangible Assets,” we conduct at least an 

annual assessment on January 1st of the carrying value of our goodwill assets. We obtain a third-party 
valuation of the reporting units associated with the goodwill assets, which is based on either estimates of 
future income from the reporting units or estimates of the market value of the units, based on comparable 
recent transactions. These estimates of future income are based upon historical results, adjusted to reflect 
our best estimate of future markets and operating conditions, and are continuously reviewed based on 
actual operating trends. Historically, actual results have occasionally differed from our estimated future 
cash flow estimates. In the future, actual results may differ materially from these estimates. In addition, the 
relevancy of recent transactions used to establish market value for our reporting units is based on
management’s judgment. 

During the year ended June 30, 2004, we recorded $4.2 million in charges related to the impairment of 
certain long-lived assets and technology related intangible and computer software development assets. The 
timing and size of future impairment charges involves the application of management’s judgment and 
estimates and could result in the impairment of all or substantially all of our long-lived assets, intangible 
assets and goodwill, which totaled $59.0 million as of June 30, 2005. 

Accrual of Legal Fees Associated with Outstanding Litigation

We accrue estimated future legal fees associated with outstanding litigation for which management 
has determined that it is probable that a loss contingency exists. This requires management to estimate the 
amount of legal fees that will be incurred in the defense of the litigation. These estimates are based heavily 
on our expectations of the scope, length to complete and complexity of the claims. Historically, as these 
factors have changed after our original estimates, we have adjusted our estimates accordingly. In the 
future, additional adjustments may be recorded as the scope, length or complexity of outstanding litigation
changes. 

Accounting for Income Taxes

As part of the process of preparing our consolidated financial statements we are required to estimate 

our income taxes in each of the jurisdictions in which we operate. This process involves estimating our 
actual current tax liabilities together with the assessment of temporary differences resulting from differing 
treatment of items, such as deferred revenue, for tax and accounting purposes. These differences result in
deferred tax assets and liabilities, which are included within our consolidated balance sheet. Tax assets also 
result from net operating losses, research and development tax credits and foreign tax credits. We must 
then assess the likelihood that our deferred tax assets will be recovered from future taxable income and to 

44 

the extent we believe that recovery is not likely, we must establish a valuation allowance. To the extent we 
establish a valuation allowance or increase or decrease this allowance in a period, the impact will be 
included in the tax provision in our statement of operations. 

Significant management judgment is required in determining our deferred tax assets and liabilities 
and any valuation allowance recorded against these amounts. The valuation allowance is based on our 
estimates of taxable income by jurisdiction in which we operate and the period over which our deferred tax 
assets will be recoverable. In the event that actual results differ from these estimates or we adjust these 
estimates in future periods we may need to establish an additional valuation allowance which could result 
in a tax provision equal to the carrying value of our deferred tax assets. During the year ended June 30, 
2004, we recorded a $14.6 million valuation allowance against our U.S. domiciled net deferred tax assets. 
This charge, however, had no impact on our cash flows.

Allowance for Doubtful Accounts 

We make judgments as to our ability to collect outstanding receivables and provide allowances for the 
portion of receivables for which collection is doubtful. Provisions are made based upon a specific review of
all significant outstanding invoices. In determining these provisions, we analyze our historical collection
experience and current economic trends. If the historical data we use to calculate the allowance provided 
for doubtful accounts do not reflect the future ability to collect outstanding receivables, additional 
provisions for doubtful accounts may be required for all or substantially all of certain receivable balances. 

Accounting for Securitization of Installments Receivable 

We made judgments with respect to several variables associated with our June 2005 securitization
transaction that had a significant impact on the valuation of our retained interest in the sold receivables, as
well as the calculation of the loss on the transaction. These judgments include the discount rate used to 
value the retained interest in the sold receivables and estimates of rates of default. In determining these 
factors, we looked at comparable transactions with respect to fair market discount rates, and analyzed our 
historical collection experience to default rates and collection timing. If the historical collection data do 
not reflect the future ability to collect outstanding receivables, an impairment of a substantial portion of
our retained interest may result. 

45 

Results of Operations 

The following table sets forth the percentages of total revenues represented by certain consolidated 

statement of operations data for the periods indicated:

Year Ended June 30, 
2004

2005

2003 

Revenues: 
Software licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service and other. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cost of revenues: 
Cost of software licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of service and other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of technology related intangible assets . . . . . . . . . . . . . . . . . . . . .
Impairment of technology related intangible and computer software

development assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total cost of revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Gross margin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating costs:
Selling and marketing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Research and development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General and administrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long-lived asset impairment charges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restructuring charges and FTC legal costs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss (gain) on sales and disposals of assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total operating costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

46.9 % 47.6 % 47.9%
52.4
53.1
100.0
100.0

52.1
100.0

4.0
30.8
2.4

2.5  
39.7

60.3

30.5
18.8
8.6
30.5
11.9
(0.0)
100.3

4.7
29.7
2.2

1.0  
37.6

62.4

30.1
17.7
9.8
0.3
6.0
(0.3)
63.6

6.3
30.7
2.6

— 
39.6

60.4

35.7
17.5
18.2
—
9.2
5.1
85.7

Income (loss) from operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(40.0)

(1.2)

(25.3)

Interest income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest expense. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other income (expense), net. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Income (loss) before provision for income taxes and equity in earnings from 
joint ventures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5
(2.1 )
(0.1)

2.1
(1.5 )
0.1

2.3
(1.6)
0.3

(39.7 )%  (0.5 )% (24.3)%

Comparison of Fiscal 2005 to Fiscal 2004

Revenues.  Revenues are derived from software licenses, consulting services and maintenance and 

training. Total revenues for fiscal 2005 decreased 19.0% to $269.6 million from $333.0 million in fiscal 
2004. Total revenues from customers outside the United States were $162.7 million or 60.3% of total 
revenues and $190.8 million or 57.3% of total revenues for fiscal 2005 and 2004, respectively. The 
geographical mix of revenues can vary from period to period. 

Software license revenues represented 47.9% and 47.6% of total revenues for fiscal 2005 and 2004, 

respectively. Revenues from software licenses in fiscal 2005 decreased 18.5% to $129.2 million from 
$158.7 million in fiscal 2004. Software license revenues are attributable to software license renewals 
covering existing users, the expansion of existing customer relationships through licenses covering
additional users, licenses of additional software products, and, to a lesser extent, to the addition of new 
customers. We believe that the decrease was primarily due to distractions caused by the ongoing 
uncertainty of the FTC proceedings, our audit committee investigation, changes in sales management and 
delays in purchasing from customers. 

46 

 
Revenues from service and other consist of consulting services, post-contract support on software
licenses, training and sales of documentation. Revenues from service and other for fiscal 2005 decreased 
19.5% to $140.3 million from $174.3 million for fiscal 2004. These decreases were attributable primarily to 
the consulting services business. Consulting services decreased due to the general low-level of licenses of 
our supply chain products during the two most recent fiscal years. Our consulting services are more heavily 
linked to the implementation of our supply chain products than they are to our other products. We believe 
that the decrease was also due to distractions caused by the ongoing uncertainty of the FTC proceedings 
and our audit committee investigation. 

Cost of Software Licenses. Cost of software licenses consists of royalties, amortization of previously 
capitalized software costs, costs related to delivery of software, including disk duplication and third-party 
software costs, printing of manuals and packaging. Cost of software licenses for fiscal 2005 increased 8.3%
to $16.9 million from $15.6 million in fiscal 2004. Cost of software licenses as a percentage of revenues 
from software licenses increased to 13.0% for fiscal 2005 from 9.8% for fiscal 2004. The cost increase is 
primarily due to an increase in amortization of computer software development costs of $0.9 million. The 
increase in the amortization of computer software development costs is related to several significant 
product releases, including aspenONE in December 2004. 

Cost of Service and Other. Cost of service and other consists of the cost of execution of application

consulting services, technical support expenses and the cost of training services. Cost of service and other 
for fiscal 2005 decreased 16.7% to $82.6 million from $99.2 million for fiscal 2004. Cost of service and 
other, as a percentage of revenues from service and other, increased to 58.9% for fiscal 2005 from 56.9% 
for fiscal 2004. The decrease in cost is primarily due to decreased payroll costs of $10.7 million related to 
reductions in headcount, as well as a decrease in reimbursable expenses of $5.5 million. 

Amortization of Technology Related Intangible Assets. Amortization of technology related intangible 

assets consists of the amortization from intangible assets obtained in acquisitions. These assets are 
generally being amortized over a period of three to five years. Amortization expense for fiscal 2005 
decreased 2.2% to $7.1 million from $7.3 million for fiscal 2004. 

Selling and Marketing. Selling and marketing expenses for fiscal 2005 decreased 3.8% to 

$96.2 million from $100.0 million for fiscal 2004, while increasing as a percentage of total revenues to 
35.7% from 30.1%. The decrease in cost is primarily due to a decrease in payroll and benefit costs of 
$6.0 million attributable to the headcount reductions effected in the June 2004 restructuring plan, offset by 
an increase in advertising costs of $2.6 million related to AspenWorld, which took place in October 2004. 

Research and Development. Research and development expenses consist of personnel and outside

consultancy costs required to conduct our product development efforts. Research and development 
expenses for fiscal 2005 decreased 19.9% to $47.2 million from $59.0 million for fiscal 2004, and decreased 
as a percentage of total revenues to 17.5% from 17.7%. The decrease is primarily attributable to a
$5.6 million decrease in salary and benefit costs and a $2.7 million decrease in facilities related costs 
associated with the June 2004 restructuring plan, and a $2.1 million decrease in consulting costs. 

We capitalized software development costs that amounted to 17.8% of our total research and
development costs during fiscal 2005, as compared to 11.4% in fiscal 2004. These percentages will vary 
from quarter to quarter, depending upon the stage of development for the various projects in a given
period. This increase is primarily due to the significant amount of effort associated with the development 
and release of aspenONE in December 2004 and aspenONE 2004.1 in May 2005. 

General and Administrative. General and administrative expenses consist primarily of salaries of

administrative, executive, financial and legal personnel, and outside professional fees. General and 
administrative expenses for fiscal 2005 increased 50.3% to $49.2 million from $32.7 million for fiscal 2004, 
and increased as a percentage of total revenues to 18.2% from 9.8%. This increase is due to a $7.1 million

47 

increase in legal, accounting and consulting costs associated with the internal investigation by the audit 
committee, $3.8 million in litigation defense and settlement costs related to KBC, a $1.9 million increase in
audit and consulting fees associated with the Sarbanes-Oxley Act, specifically our Section 404 efforts, and 
$3.4 million in contract and employment termination costs. 

Long-Lived Asset Impairment Charges.

In fiscal 2004, this amount consisted of $1.0 million in
impairment charges based on our decision to discontinue certain internal capital projects that had 
previously been put on hold. In addition, certain fixed assets that supported research and development 
efforts were considered impaired as a result of the product consolidation decisions made in the April 2004
product review. 

Restructuring Charges and FTC Legal Costs. During fiscal 2005, we recorded $24.9 million in
restructuring charges and FTC legal costs. Of this amount, $14.4 million related to headcount reductions
and facility consolidations associated with the June 2004 restructuring plan that did not qualify for accrual 
at June 30, 2004, $3.8 million related to the May 2005 restructuring charge, $0.4 million related to the 
accretion of discounted restructuring accruals, and $6.5 million related to adjustments to prior 
restructuring accruals, all offset by $0.2 million in legal costs related to the FTC challenge of our 
acquisition of Hyprotech. 

In May 2005, we initiated a plan to consolidate several corporate functions and to reduce our 

operating expenses. The plan to reduce operating expenses primarily resulted in headcount reductions, and
also included the termination of a contract and the consolidation of facilities. These actions resulted in an
aggregate restructuring charge of $3.8 million, recorded in the fourth quarter of fiscal 2004. The 
components of the restructuring plan are as follows:

Closure/consolidation of facilities: Approximately $0.1 million of the restructuring charge relates
to the termination of a facility lease. The facility lease had a remaining term of two years. The amount 
accrued is an estimate of the remaining obligation under the lease, reduced by expected income from 
the sublease of the underlying properties. 

Employee severance, benefits and related costs: Approximately $3.4 million of the restructuring 

charge relates to the reduction in headcount. Approximately 130 employees, or 10% of the workforce,
were eliminated under the restructuring plan. The employees were primarily located in North 
America and Europe. All business units were affected, including services, sales and marketing, 
research and development, and general and administrative. 

Contract termination costs: Approximately $0.3 million of the restructuring charge relates to 

charges associated with the termination of a contract for a future user conference. The contract was 
terminated in June 2005. 

Loss (Gain) on Sales of Assets.  Loss (gain) on sales of assets was a $13.6 million loss in fiscal 2005 as 

compared to $0.9 million gain in fiscal 2004. This decrease is primarily due to the loss of $13.9 million 
incurred on the securitization of installments receivable. 

Interest Income.  Interest income is generated from investment of excess cash and from the license of 

software pursuant to installment contracts. Under these installment contracts, we offer a customer the 
option to make annual payments for its term licenses instead of a single license fee payment at the 
beginning of the license term. Historically, a substantial majority of the asset optimization customers have 
elected to license these products through installment contracts. Included in the annual payments is an 
implicit interest rate established by us at the time of the license. As we sell more perpetual licenses for 
value chain solutions, these sales are being paid for in forms that are generally not installment contracts. If 
the mix of sales moves away from installment contracts, interest income in future periods will be reduced. 

48 

We sell a portion of the installment contracts to unrelated financial institutions. The interest earned

by us on the installment contract portfolio in any one year is the result of the implicit interest rate 
established by us on installment contracts and the size of the contract portfolio. Interest income was 
$6.2 million for fiscal 2005 as compared to $7.3 million in fiscal 2004. This decrease primarily is due to the 
increased sale of receivables and lower license revenues, resulting in the decrease of installments 
receivable balance. 

Interest Expense.

Interest expense was incurred under our convertible debentures, amounts owed to 

Accenture, and capital lease obligations. Interest expense in fiscal 2005 decreased to $4.2 million from 
$4.9 million in fiscal 2004. This decrease in interest expense results from the elimination of interest bearing 
debt, such as the retirement of a portion of the convertible debentures in January 2004, March 2004 and 
May 2004, and the retirement of the remaining portion in June 2005. 

Foreign currency exchange gain (loss). Foreign currency exchange gains and losses are primarily 

incurred through the revaluation of receivables denominated in foreign currencies. In fiscal 2005 we
recorded a foreign currency exchange gain of $0.6 million, compared to a $0.3 million gain in fiscal 2004. 
This increase was due to favorable exchange rate fluctuations and effective hedging of foreign receivable 
balances. 

Provision for/Benefit from Income Taxes. We recorded a provision for income taxes of $3.8 million for 
fiscal 2005, primarily related to foreign taxes. We recorded a provision for income taxes of $19.9 million for 
fiscal 2004. The provision for fiscal 2004 includes a $14.6 million valuation allowance against U.S.
domiciled net deferred tax assets and a $6.8 million provision primarily related to foreign taxes. 
Additionally, as part of a change in the Japan-US tax treaty, the Japanese withholding tax law was repealed 
effective July 1, 2004 and provided approximately $1.5 million of income tax relief to the Company as of 
the enactment date of the tax law change which occurred in the quarter ended March 31, 2004. We 
provided a full valuation allowance against the net operating losses generated during fiscal 2004 and 2005. 

Under SFAS No. 109, a deferred tax asset related to the future benefit of a tax loss carryforward 
should be recorded unless we make a determination that it is “more likely than not” that such deferred tax 
asset would not be realized. Accordingly, a valuation allowance would be provided against the deferred tax 
asset to the extent that we cannot demonstrate that it is “more likely than not” that the deferred tax asset 
will be realized. In determining the amount of valuation allowance required, we consider numerous
factors, including historical profitability, estimated future taxable income, the volatility of the historical 
earnings, and the volatility of earnings of the industry in which we operate. We periodically review our 
deferred tax asset to determine if such asset is realizable. In fiscal 2004, we concluded, in accordance with
SFAS No. 109, that we should record a valuation allowance on a significant portion of our deferred tax 
asset under the “more likely than not” test and therefore increased the amount of the valuation allowance. 
See Note 9 to Consolidated Financial Statements. 

Equity in earnings from joint ventures. Equity in earnings from joint ventures was a $0.4 million loss in

fiscal 2004. These losses relate to net losses incurred by certain joint ventures in which we have an equity 
interest. These investments were liquidated during fiscal 2005, and there were no material gains or losses 
realized. 

Comparison of Fiscal 2004 to Fiscal 2003

Revenues. Total revenues for fiscal 2004 decreased 3.9% to $333.0 million from $346.5 million in 
fiscal 2003. Total revenues from customers outside the United States were $190.8 million or 57.3% of total 
revenues and $186.7 million or 53.9% of total revenues for fiscal 2004 and 2003, respectively. 

Software license revenues represented 47.6% and 46.9% of total revenues for fiscal 2004 and 2003, 

respectively. Revenues from software licenses in fiscal 2004 decreased 2.3% to $158.7 million from 

49 

$162.4 million in fiscal 2003. This decrease is primarily due to a modest decrease in demand for products 
from our engineering product line. 

Revenues from service and other for fiscal 2004 decreased 5.3% to $174.3 million from $184.1 million

for fiscal 2003. This decrease is attributable primarily to the consulting services business. Consulting
services decreased due to a year over year $2.1 million decline in reimbursable expenses, and due to the 
general low-level of licenses of our manufacturing/supply chain products during the two most recent fiscal
years. Our consulting services are more heavily linked to the implementation of our manufacturing/supply 
chain products than they are to our engineering products. 

Cost of Software Licenses. Cost of software licenses for fiscal 2004 increased 11.9% to $15.6 million 

from $13.9 million in fiscal 2003. Cost of software licenses as a percentage of revenues from software 
licenses increased to 9.8% for fiscal 2004 from 8.6% for fiscal 2003. The cost increase is primarily due to an 
increase in royalty costs of $0.9 million and amortization of computer software development costs of 
$0.9 million. The increase in royalties is attributable to higher license revenues and the increase in the 
amortization of computer software development costs is due to two significant product releases, AES 12.1 
and AMS 6.0, during the first part of this fiscal year. 

Cost of Service and Other. Cost of service and other for fiscal 2004 decreased 7.2% to $99.2 million
from $106.9 million for fiscal 2003. Cost of service and other, as a percentage of revenues from service and 
other, decreased to 56.9% for fiscal 2004 from 58.0% for fiscal 2003. The decrease in cost is primarily due 
to decreased payroll costs of $2.5 million related to reductions in headcount, as well as a decrease in 
reimbursable expenses of $2.1 million. The costs of service and other as a percentage of service and other 
revenues are generally consistent from period to period, showing a modest decrease as our utilization rates 
have increased. 

Amortization of Technology Related Intangible Assets.  Amortization expense for fiscal 2004 decreased 

11.5% to $7.3 million from $8.2 million for fiscal 2003. The decrease is primarily due to the discontinued 
amortization of $5.3 million of intangible assets for which an impairment was recorded in the three months
ended December 31, 2002. 

Impairment of Technology Related Intangible and Computer Software Development Assets.  Impairment 
of technology related intangible and computer software development assets consists of impairment charges 
related to assets that are directly involved in the production of revenue. In the fourth quarter of fiscal 2004, 
we recorded an impairment charge of $3.3 million related to management’s decision to discontinue 
development of certain next generation manufacturing/supply chain products. Management’s decision was 
based on concerns about the future revenue projections for these products, and the assessment of costs 
remaining to bring these products to market. In fiscal 2003, we recorded an impairment charge of 
$8.7 million related to computer software development costs and intangible assets that were related to 
products that management either decided would not be sold or determined that their carrying values were 
in excess of their fair values. The assets that will no longer be used were identified by management’s 
decisions to discontinue future development efforts associated with certain products. The carrying values 
of the remaining assets were compared to the fair values of those assets resulting in an impairment. The 
fair values were determined by forecasting the future net cash flows associated with the products. 

Selling and Marketing.  Selling and marketing expenses for fiscal 2004 decreased 5.5% to 

$100.0 million from $105.9 million for fiscal 2003, while decreasing as a percentage of total revenues to 
30.1% from 30.5%. The decrease is primarily due to a decrease in advertising costs of $5.0 million related 
to AspenWorld, which took place in fiscal 2003, and a decrease in payroll and benefit costs of $0.8 million 
attributable to the headcount reductions effected in the October 2002 restructuring plan. 

Research and Development.  Research and development expenses for fiscal 2004 decreased 9.5% to 
$59.0 million from $65.1 million for fiscal 2003, and decreased as a percentage of total revenues to 17.7% 

50 

from 18.8%. The decrease is primarily attributable to a $1.7 million decrease in depreciation and 
amortization related to assets written-off in December 2002, a $1.0 million decrease in salary and benefit 
costs associated with the reductions in headcount from the October 2002 restructuring plan, a $1.0 million
decrease in consulting costs, and a $0.7 million decrease in travel costs.

We capitalized software development costs that amounted to 11.4% of our total research and
development costs during fiscal 2004, as compared to 14.6% in fiscal 2003. These percentages will vary 
from quarter to quarter, depending upon the stage of development for the various projects in a given
period. This decrease is primarily due to the completion of product development activity related to two 
significant product releases during the first part of fiscal 2004. 

General and Administrative. General and administrative expenses for fiscal 2004 increased 10.4% to 

$32.7 million from $29.6 million for fiscal 2003, and increased as a percentage of total revenues to 9.8% 
from 8.6%. This increase is due to a $6.5 million increase in legal costs associated with legal defense and 
loss contingencies associated with the KBC litigation and with the settlement of other litigation. This is 
offset by a $3.0 million decrease in salary and benefit costs associated with the reductions in headcount 
from the October 2002 restructuring plan. 

Long-Lived Asset Impairment Charges.  In fiscal 2004, this amount consisted of $1.0 million in
impairment charges based on our decision to discontinue certain internal capital projects that had 
previously been put on hold. In addition, certain fixed assets that supported research and development 
efforts were considered impaired as a result of the product consolidation decisions made in the April 2004
product review. In October 2002, we determined that the goodwill should be tested for impairment as a 
result of lowered revenue expectations and the overall decline in our market value. This amounted to a 
$74.2 million aggregate impairment charge, recorded in the fiscal 2003 consolidated statement of 
operations. Concurrent with the goodwill impairment review, we determined that several other assets were 
also impaired. This resulted in an additional $31.4 million in impairment charges in fiscal 2003, related to 
the intellectual property purchased from Accenture in February 2002, internal capital projects and fixed 
assets. 

Restructuring Charges and FTC Legal Costs.  During fiscal 2004, we recorded $20.1 million in
restructuring charges and FTC legal costs. Of this amount, $23.5 million is associated with a June 2004
restructuring plan, which is offset by $8.3 million in adjustments to prior restructuring accruals and 
deferred rent balances, and $4.9 million consists of legal costs related to the FTC challenge of our 
acquisition of Hyprotech. 

In June 2004, we initiated a plan to reduce our operating expenses in order to better align our expense 

structure with the current economic environment and to improve our operating margins. This plan
coincided with a reduction in our revenue projections for fiscal 2005. The plan to reduce operating 
expenses resulted in the consolidation of facilities, headcount reductions, and the termination of operating
contracts. These actions resulted in an aggregate restructuring charge of $23.5 million. This is offset by $8.3
million in adjustments to the prior restructuring accruals and deferred rent balances, primarily related to 
the buy-out of the remaining obligation for our Houston, Texas facility, of which portions had previously 
been vacated and included in previous restructuring plans. The components of the restructuring plan are as 
follows: 

Closure/consolidation of facilities: Approximately $20.5 million of the restructuring charge 

relates to the termination of facility leases and other lease related costs. The facility leases had 
remaining terms ranging from several months to eight years. The amount accrued is an estimate of the 
remaining obligation under the lease or actual costs to buy-out leases, reduced by expected income 
from the sublease of the underlying properties. 

51 

Employee severance, benefits and related costs: Approximately $1.2 million of the restructuring 
charge relates to the reduction in headcount. Approximately 35 employees, or 2% of the workforce, 
were eliminated under the restructuring plan. A majority of the employees were located in North 
America, although Europe was affected, as well. All business units were affected, including services, 
sales and marketing, research and development, and general and administrative. 

Impairment of assets: Approximately $1.8 million of the restructuring charge relates to charges 

associated with the impairment of fixed assets associated with the closed/consolidated facilities. These 
assets were reviewed for impairment in accordance with SFAS No. 144, and were considered to be 
impaired because their carrying values were in excess of their fair values. The fair values were 
determined based on a quoted market price from a third party. 

Loss (Gain) on Sales of Assets.  Loss (gain) on sales of assets was a $0.9 million gain in fiscal 2004 as

compared to $0.1 million gain in fiscal 2003. This increase is due primarily to a $0.5 million gain on the sale 
of receivables and a $0.2 million gain on the sale of land in Houston, Texas in fiscal 2004. 

Interest Income.  Interest income was $7.3 million for fiscal 2004 as compared to $8.2 million in fiscal 

2003. This decrease primarily is due to the aggressive collection of receivables and the increased sale of 
receivables, resulting in the decrease of installments receivable balance. 

Interest Expense.  Interest expense in fiscal 2004 decreased to $4.9 million from $7.1 million in fiscal 

2003. This decrease in interest expense results from the elimination of interest bearing debt, such as the 
payment of the obligation to Accenture in August 2003 and the repurchase and retirement of a portion of 
the convertible debentures in September 2003, January 2004, March 2004 and May 2004. 

Foreign currency exchange gain (loss).  In fiscal 2004 we recorded a foreign currency exchange gain of 

$0.3 million, compared to a $0.2 million loss in fiscal 2003. This increase was due to favorable exchange 
rate fluctuations and effective hedging of foreign receivable balances.

Provision for/Benefit from Income Taxes.  We recorded a provision for income taxes of $19.9 million

for fiscal 2004. The provision for fiscal 2004 includes a $14.6 million valuation allowance against U.S. 
domiciled net deferred tax assets and a $6.8 million provision primarily related to foreign taxes. 
Additionally, as part of a change in the Japan-US tax treaty, the Japanese withholding tax law was repealed 
effective July 1, 2004 and provided approximately $1.5 million of income tax relief to the Company as of 
the enactment date of the tax law change which occurred in the quarter ended March 31, 2004. We 
provided a full valuation allowance against the net operating losses generated during fiscal 2003 and 2004. 

Equity in earnings from joint ventures. Equity in earnings from joint ventures was a $0.4 million loss in

fiscal 2004 as compared to a $0.5 million loss in fiscal 2003. These losses relate to net losses incurred by 
certain joint ventures in which we have an equity interest. 

Quarterly Results

Our operating results and cash flow have fluctuated in the past and may fluctuate significantly in the 

future as a result of a variety of factors, including purchasing patterns, timing of introductions of new 
solutions and enhancements by us and our competitors, and fluctuating economic conditions. Because 
license fees for our software products are substantial and the implementation of our solutions often involve 
the services of engineers over an extended period of time, the sales process for our solutions is lengthy and 
can exceed one year. Accordingly, software revenues are difficult to predict, and the delay of any order 
could cause our quarterly revenues to fall substantially below expectations. Moreover, to the extent that we 
succeed in shifting customer purchases away from point solutions and toward integrated solutions, the 
likelihood of delays in ordering may increase and the effect of any delay may become more pronounced. 

52 

We ship software products within a short period after receipt of an order and usually do not have a 
material backlog of unfilled orders of software products. Consequently, revenues from software licenses, 
including license renewals, in any quarter are substantially dependent on orders booked and shipped in 
that quarter. Historically, a majority of each quarter’s revenues from software licenses has been derived 
from license agreements that have been consummated in the final weeks of the quarter. Therefore, even a 
short delay in the consummation of an agreement may cause revenues to fall below expectations for that 
quarter. Since our expense levels are based in part on anticipated revenues, we may be unable to adjust 
spending in a timely manner to compensate for any revenue shortfall and any revenue shortfall would 
likely have a disproportionately adverse effect on net income. We expect that these factors will continue to 
affect our operating results for the foreseeable future. 

53 

The following table presents selected quarterly consolidated statement of operations data for fiscal 
2004 and 2005. These data are unaudited but, in our opinion, reflect all adjustments necessary for a fair 
presentation of these data in accordance with US GAAP. 

Fiscal 2004 Quarter Ended
Dec. 31 Mar. 31

Sep. 30

June 30

Sep. 30

Fiscal 2005 Quarter Ended
Dec. 31  Mar. 31 

June 30

(In thousands, except per share data) 

Revenues: 
Software licenses. . . . . . . . . . . . . . . .
Service and other . . . . . . . . . . . . . . .
Total revenues . . . . . . . . . . . . . . .

Cost of revenues: 
Cost of software licenses . . . . . . . . .
Cost of service and other . . . . . . . . .
Amortization of technology related 
intangible assets . . . . . . . . . . . . . .
Impairment of technology related 

intangible and computer software 
development assets . . . . . . . . . . .
Total cost of revenues . . . . . . . . .

$38,144  $ 38,856  $ 36,636  $  45,025  $  25,273  $ 36,732   $  31,097   $  36,131
34,323
70,454

34,893  
71,625  

37,997 
63,270 

44,245 
89,270 

44,939 
81,575 

42,265 
80,409 

33,121  
64,218  

42,886 
81,742 

3,617 
24,382 

4,315 
24,246 

3,854 
25,345 

3,791 
25,210 

3,941 
22,108 

4,731  
21,913  

4,035  
19,215  

4,157
19,402

1,832 

1,842 

1,806 

1,790 

1,774 

1,778  

1,778  

1,782

— 
29,831 

— 
30,403 

— 
31,005 

3,250 
34,041 

— 
27,823 

—  
28,422  

—  
25,028  

—
25,341

Gross profit . . . . . . . . . . . . . . . . . . . .

50,578 

51,339 

50,570 

55,229 

35,447 

43,203  

39,190  

45,113

Operating costs:
Selling and marketing. . . . . . . . . . . .
Research and development . . . . . . .
General and administrative . . . . . . .
Long-lived asset impairment 

charges . . . . . . . . . . . . . . . . . . . . .
Restructuring charges and FTC legal 
costs . . . . . . . . . . . . . . . . . . . . . . . .
Loss (gain) on sales and disposals of 
assets . . . . . . . . . . . . . . . . . . . . . . .
Total operating costs . . . . . . . . . .
Income (loss) from operations . . . .
Interest income, net . . . . . . . . . . . . .
Other income (expense), net . . . . . .
Income (loss) before provision for 

taxes and equity in earnings from 
joint ventures . . . . . . . . . . . . . . . .
Benefit from (provision for) income 
taxes. . . . . . . . . . . . . . . . . . . . . . . .

Equity in earnings from joint

ventures. . . . . . . . . . . . . . . . . . . . .
Net income (loss) . . . . . . . . . . . . . . .
Accretion of preferred stock 

discount and dividend . . . . . . . . .

Net income (loss) applicable to 

23,957 
16,006 
6,872 

23,651 
14,294 
6,607 

23,841 
14,234 
6,399 

28,579 
14,421 
12,849 

22,375 
12,183 
10,427 

23,401  
11,574  
12,694  

24,299  
11,552  
12,746  

26,112
11,927
13,308

— 

— 

— 

967 

— 

—  

—  

—

— 2,000 

— 18,085 

21,508 

219  

(97 ) 

3,277

(302)
46,533 
4,045 
682 
(691)

(377)
46,175 
5,164 
855 
246 

(206)
44,268 
6,302 
419 
256 

6 
74,907 
(19,678)
400 
441 

(362)
66,131 
(30,684)
654 
(393)

5  
47,893  
(4,690 ) 
657  
351  

13,911
81 
48,581  
68,535
(9,391 )  (23,422)
185
676

477  
(16 ) 

4,036 

6,265 

6,977 

(18,837)

(30,423)

(3,682 ) 

(8,930 )  (22,561)

(411)

(1,578)

(341)

(17,566)

340 

573  

(1,133 ) 

(3,556)

—
3,625 

(100)
4,587 

—
6,636 

(251)
(36,654)

— 
(30,083)

—  

—
(3,109 )  (10,063 )  (26,117)

—  

3,852 

(3,352)

(3,400)

(3,458)

(3,528)

(3,589 ) 

(3,630 ) 

(3,703)

common stockholders . . . . . . . . .

$ 7,477  $  1,235  $  3,236  $ (40,112) $ (33,611) $ (6,698 )  $ (13,693 )  $ (29,820)

Basic income (loss) per share
applicable to common 
shareholders . . . . . . . . . . . . . . . . .

Basic weighted average shares

$  0.19 $  0.03 $  0.08 $ 

(0.97) $ 

(0.80) $ (0.16)  $ 

(0.32 )  $ 

(0.69)

outstanding . . . . . . . . . . . . . . . . . .

39,772 

40,175 

41,049 

41,328 

41,796 

42,153  

42,639  

42,942

Diluted income (loss) per share

applicable to common 
shareholders . . . . . . . . . . . . . . . . .

Diluted weighted average shares

$  0.15 $  0.02 $  0.06 $ 

(0.97) $ 

(0.80) $ (0.16)  $ 

(0.32 )  $ 

(0.69)

outstanding . . . . . . . . . . . . . . . . . .

59,437 

50,315 

51,907 

41,328 

41,796 

42,153  

42,639  

42,942

54 

 
 
 
 
 
 
Liquidity and Capital Resources 

In fiscal 2005, operating activities provided $25.9 million of cash primarily due to the securitization of

installments receivable, offset by losses from operations, and payments made related to restructuring 
activities, the FTC litigation and the audit committee investigation. In fiscal 2003 and 2004, operating 
activities provided $22.2 million and $40.9 million of cash, respectively. 

In fiscal 2005, investing activities used $11.8 million of cash primarily as a result of the capitalization 
of computer software development costs and the ordinary purchases of property and equipment, partially 
offset by the proceeds from the sale of a building in June 2005. In fiscal 2003 and 2004, investing activities 
provided $6.8 million of cash and used $7.6 million of cash, respectively. 

In fiscal 2005, financing activities used $53.7 million of cash primarily due to payment made to retire 
all of the outstanding principal amount of our convertible debentures, partially offset by by the proceeds 
from a securitization transaction, exercise of stock options and issuance of stock under our employee stock 
purchase plan. In fiscal 2003 and 2004, financing activities used $11.6 million of cash and provided 
$22.2 million of cash, respectively. 

Historically, we have financed our operations principally through cash generated from public offerings 

of our convertible debentures and common stock, private offerings of our preferred stock and common 
stock, operating activities, and the sale of installment contracts to third parties. 

On June 15, 2005, we paid $58.2 million to retire all of the outstanding principal amount of our

convertible debentures, together with interest accrued thereon. We funded this payment with 
(a) $8.6 million of our existing cash, (b) $5.8 million obtained from our sales of installments receivable 
under our existing receivables programs with Silicon Valley Bank and GE Capital Corporation, and 
(c) $43.8 million through the sale of additional installments receivable under the arrangement described 
below. 

On June 15, 2005, we securitized outstanding installment software license receivables totaling
$71.2 million. Such securitization was structured in manner so that the securitization qualified as a sale.  
We received $43.8 million of cash and retained an interest in the sold receivables valued at $16.6 million. 
We also retained certain limited recourse obligations relative to the receivables valued at approximately 
$1.0 million. Overall, the transaction (including $2.1 million in aggregate fees and expenses, including fees 
of the lenders’ agent and fees of our outside legal counsel and financial advisors) resulted in a loss of 
$13.9 million in the quarter ended June 30, 2005 and was recorded as a loss on sales and disposals of assets. 
We expect that we would have received approximately $21.8 million, $18.3 million and $14.0 million of
cash flows from these installments receivable during fiscal years 2006, 2007 and 2008, if not for the
securtization of the receivables. 

In August 2003, we issued and sold 300,300 shares of Series D-1 preferred, along with WD warrants to 

purchase up to 6,006,006 shares of common stock, for an aggregate purchase price of $100.0 million. 
Concurrently, we paid $30.0 million and issued 63,064 shares of Series D-2 preferred, along with WB and 
WD warrants to purchase up to 1,261,280 shares of common stock, to repurchase all of the outstanding 
Series B preferred. The Series D preferred earns cumulative dividends at an annual rate of 8%, that are 
payable when and if declared by the board, in cash or, subject to certain conditions, common stock. Each
share of Series D preferred currently is convertible into 100 shares of common stock, subject to anti-
dilution and other adjustments. As a result, the shares of Series D preferred currently are convertible into 
an aggregate of 36,336,400 shares of common stock. The Series D preferred is subject to redemption at the 
option of the holders as follows: 50% on or after August 14, 2009 and 50% on or after August 14, 2010. 

We have had arrangements to sell installments receivable to three financial institutions, General
Electric Capital Corporation, Bank of America and Silicon Valley Bank. We sold certain installment 
contracts for aggregate proceeds of approximately $54.9 million and $97.6 million during fiscal 2004 and 

55 

2005, respectively. As of June 30, 2005, there was approximately $64 million in additional availability under 
the arrangements. We expect to continue to have the ability to sell receivables, as the collection of the sold 
receivables will reduce the outstanding balance, and the availability under the arrangements can be 
increased. At June 30, 2005, we had a partial recourse obligation that was within the range of $0.7 million
to $2.7 million. 

In January 2003, we executed a loan arrangement with Silicon Valley Bank. This arrangement 

provides a line of credit of up to the lesser of (1) $15.0 million or (2) 70% of eligible domestic receivables, 
and a line of credit of up to the lesser of (1) $10.0 million or (2) 80% of eligible foreign receivables. The 
lines of credit bear interest at the bank’s prime rate (6.00% at June 30, 2005) plus 0.5%. We are required 
to maintain a $4.0 million compensating cash balance with the bank, or be subject to an unused line fee 
and collateral handling fees. The lines of credit will initially be collateralized by nearly all of our assets, and 
upon achieving certain net income targets, the collateral will be reduced to a lien on our accounts 
receivable. We are required to meet certain financial covenants, including minimum tangible net worth,
minimum cash balances and an adjusted quick ratio. As of June 30, 2005, there were $8.5 million in letters 
of credit outstanding under the line of credit, and there was $9.7 million available for future borrowing. As 
of June 30, 2005, we were in default of the tangible net worth and adjusted quick ratio covenants. On 
September 13, 2005, we executed an amendment to the loan arrangement that adjusted the terms of the 
financial covenants and cured the default as of June 30, 2005. The loan arrangement expires in July 2006. 

As of June 30, 2005, we had cash and cash-equivalents totaling $68.1 million. Our commitments as of 
June 30, 2005 consisted of debt obligations and leases for our headquarters and other facilities. Other than
these, there were no other commitments for capital or other expenditures. Our obligations related to these 
items at June 30, 2005 are as follows (in thousands): 

Operating leases . . . . . . . . . . . . . .  
Debt obligations . . . . . . . . . . . . . .
Total commitments . . . . . . . . . . . .  

2006
$10,910 
1,042 
$11,952 

2007
$9,467 
198 
$9,665 

2008
$7,777 
140
$7,917 

2009 
$7,589 
—
$7,589 

2010
$7,123
—
$7,123

Thereafter 
$ 21,262
— 
$ 21,262

Total 
$ 64,128
1,380
$ 65,508

We believe our current cash balances, together with availability of sales of our installment contracts 
and cash flows from our operations will be sufficient to meet our working capital and capital expenditure 
requirements for at least fiscal 2006. However, we may need to obtain additional financing thereafter or 
earlier, if our current plans and projections prove to be inaccurate or our expected cash flows prove to be 
insufficient to fund our operations because of lower-than-expected revenues, unanticipated expenses or 
other unforeseen difficulties. In addition, we may seek to take advantage of favorable market conditions by 
raising additional funds from time to time through public or private security offerings, debt financings,
strategic alliances or other financing sources. Our ability to obtain additional financing will depend on a 
number of factors, including market conditions, our operating performance and investor interest. These 
factors may make the timing, amount, terms and conditions of any financing unattractive. They may also 
result in our incurring additional indebtedness or accepting stockholder dilution. If adequate funds are not 
available or are not available on acceptable terms, we may have to forego strategic acquisitions or 
investments, reduce or defer our development activities, or delay our introduction of new products and 
services. Any of these actions may seriously harm our business and operating results. 

Inflation 

Inflation has not had a significant impact on our operating results to date and we do not expect 

inflation to have a significant impact during fiscal 2006. 

56 

 
 
 
 
New Accounting Pronouncements 

In December 2004, the FASB issued SFAS No. 123R, Share-Based Payment. SFAS No. 123R is a

revision of SFAS No. 123, Accounting for Stock-Based Compensation, and supersedes Accounting 
Principles Board Opinion No. 25, Accounting for Stock Issued to Employees, and its related 
implementation guidance. SFAS No. 123R focuses primarily on accounting for transactions in which an
entity obtains employee services in share-based payment transactions. SFAS No. 123R requires entities to 
recognize stock compensation expense for awards of equity instruments to employees based on the grant-
date fair value of those awards (with limited exceptions). SFAS No. 123R is effective for our first annual 
reporting period that begins after June 15, 2005. We expect to adopt SFAS No. 123R using its modified 
prospective application method. Adoption of SFAS No. 123R is expected to increase stock compensation 
expense. Assuming the continuation of current programs, our preliminary estimate is that additional stock 
compensation expense for fiscal 2006 will be in the range of $5 million to $6 million. In addition, SFAS 
No. 123R requires that the excess tax benefits related to stock compensation be reported as a financing 
cash inflow rather than as a reduction of taxes paid in cash from operations. 

Item 7A.  Quantitative and Qualitative Disclosures about Market Risk

Information relating to quantitative and qualitative disclosure about market risk is set forth in notes 
2(c), 2(d), 2(h), 2(j) and 11 to our consolidated financial statements included elsewhere in this Form 10-K
and below under the captions “Investment Portfolio” and “Foreign Exchange Hedging.” 

Investment Portfolio 

We do not use derivative financial instruments in our investment portfolio. We place our investments 

in instruments that meet high credit quality standards, as specified in our investment policy guidelines. In
addition, we limit the amount of credit exposure to any one issuer and the types of instruments approved 
for investment. We do not expect any material loss with respect to our investment portfolio. The following
table provides information about our investment portfolio. For investment securities, the table presents 
principal cash flows and related weighted average interest rates by expected maturity dates. 

Principal (Notional) Amounts by Expected Maturity in U.S. Dollars

Cash Equivalents. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weighted Average Interest Rate . . . . . . . . . . . . . .
Investments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Weighted Average Interest Rate . . . . . . . . . . . . . .
Total Portfolio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weighted Average Interest Rate . . . . . . . . . . . . . .

Impact of Foreign Currency Rate Changes 

Fair Value
at 
June 30,
2005

$68,149 

3.31%

$ —
—
$68,149 

3.31%

Maturing in Fiscal Year Ending June 30, 

2006

  2007   2008   2009 
(In thousands, except interest rates) 
$ 68,149 — —  — 
3.31% — — — 
— — — — 
— — — — 
$ 68,149 — —  — 
3.31% — — — 

2010 and
  Thereafter

— 
— 
— 
— 
— 
— 

During fiscal 2005, the U.S. dollar weakened against currencies for countries in which we have local

operations, primarily in Europe, Canada and the Asia-Pacific region. The translation of our foreign 
entities’ assets and liabilities did not have a material impact on our consolidated operating results. Foreign
exchange forward contracts are only obtained to hedge certain customer installments receivable amounts 
or obligations denominated in a foreign currency.

57 

 
 
Foreign Exchange Hedging 

We enter into foreign exchange forward contracts to reduce our exposure to currency fluctuations on
customer installments receivable denominated in foreign currencies. The objective of these contracts is to 
limit the impact of foreign currency exchange rate movement on our operating results. We do not use 
derivative financial instruments for speculative or trading purposes. We had $23.0 million of foreign 
exchange forward contracts denominated in Japanese, British, Swiss, Canadian and Euro currencies which 
represented underlying customer installments receivable transactions at the end of fiscal 2005. The 
underlying customer installments receivable transactions consist of assets carried on our balance sheet and 
assets that were transferred to our subsidiary as part of the securitization of installments receivable, for 
which we have assumed the exposure associated with changes in foreign exchange rates. At each balance 
sheet date, the foreign exchange forward contracts and the related installments receivable denominated in 
foreign currencies are revalued based on the current market exchange rates. Resulting gains and losses are 
included in earnings or deferred as a component of other comprehensive income. These deferred gains 
and losses are recognized in income in the period in which the underlying anticipated transaction occurs. 
Gains and losses related to these instruments for fiscal 2005 were not material to our financial position. 
We do not anticipate any material adverse effect on our consolidated financial position, operating results 
or cash flows resulting from the use of these instruments. There can be no assurance, however, that these 
strategies will be effective or that transaction losses can be limited or forecasted accurately. 

The following table provides information about our forward contracts, at the end of fiscal 2005, to sell 

foreign currencies for U.S. dollars. All of these contracts relate to customer accounts and installments 
receivable. The table presents the value of the contracts in U.S. dollars at the contract exchange rate as of 
the contract maturity date. The average contract rate approximates the weighted average contractual 
foreign currency exchange rate and the forward position in U.S. dollars approximates the fair value on the 
contract at the end of fiscal 2005. 

Currency 

Euro. . . . . . . . . . . . . . . . .
Japanese Yen . . . . . . . . .
Canadian Dollar . . . . . .
British Pound Sterling .
Swiss Franc. . . . . . . . . . .
Total . . . . . . . . . . . . . .

Average 
Contract 
Rate

Forward
Amount in
U.S. Dollars

0.79 
106.01 
1.24 
0.54 
1.23 

$ 13,744
3,183
2,848
2,267
977
$ 23,019

Contract Origination Date

ContractMaturity Date

(In thousands) 

Various: June 04-June 05
Various: April 02-June 05

Various: July 05-June 06 
Various: July 05-June 06
Various: July 04-June 05 Various: July 05-April 06
Various: July 05-June 06
Various: July 04-June 05
Various: July 05
Various: July 04-June 05

Item 8.

Financial Statements and Supplementary Data

Management’s report on internal control over financial reporting is filed as part of this Form 10-K
beginning on page M-1 (immediately following page 69), and our consolidated financial statements are 
filed as a part of this Form 10-K beginning on page  
F-1 (immediately following page M-5). 

Item 9.

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None. 

Item 9A.  Controls and Procedures

Our management, with the participation of our chief executive officer and chief financial officer, 

evaluated the effectiveness of our disclosure controls and procedures as of June 30, 2005. The term 
“disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange 

58 

 
Act, means controls and other procedures of a company that are designed to ensure that information
required to be disclosed by a company in the reports that it files or submits under the Exchange Act is 
recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and 
forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to 
ensure that information required to be disclosed by a company in the reports that it files or submits under 
the Exchange Act is accumulated and communicated to the company’s management, including its principal 
executive and principal financial officers, as appropriate to allow timely decisions regarding required 
disclosure. Management recognizes that any controls and procedures, no matter how well designed and 
operated, can provide only reasonable assurance of achieving their objectives and management necessarily 
applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Based 
on the evaluation of our disclosure controls and procedures as of June 30, 2005, and due to the material 
weaknesses in our internal control over financial reporting described above under “Item 8. Financial 
Statements and Supplementary Data—Management Report on Internal Control over Financial 
Reporting,” our chief executive officer and chief financial officer concluded that, as of such date, our 
disclosure controls and procedures were not effective at the reasonable assurance level. 

Management’s report on our internal control over financial reporting (as defined in 

Rules 13a-15(f) and 15d-15(f) under the Exchange Act), including the description of material weaknesses 
in our internal control over financial reporting as of June 30, 2005 and the remedial measures we are 
undertaking to address those material weaknesses, and the independent registered public accounting firm’s
related audit report are included in Item 8 of this Form 10-K and are incorporated herein by reference. 

No change in our internal control over financial reporting occurred during the fiscal quarter ended 

June 30, 2005 that has materially affected, or is reasonably likely to materially affect, our internal control 
over financial reporting.

Item 9B.  Other Information

None. 

59 

Item 10.  Directors and Executive Officers of the Registrant

PART III 

The information required under this Item is incorporated herein by reference to our definitive proxy 

statement pursuant to Regulation 14A, to be filed with the SEC not later than October 28, 2005. 

Item 11.  Executive Compensation

The information required under this Item is incorporated herein by reference to our definitive proxy 

statement pursuant to Regulation 14A, to be filed with the SEC not later than October 28, 2005. 

Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

See “Securities Authorized for Issuance Under Equity Compensation Plans” under “Item 5. Market 

for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities,” 
in Part II of this Form 10-K.

The information required under this Item is incorporated herein by reference to our definitive proxy 

statement pursuant to Regulation 14A, to be filed with the SEC not later than October 28, 2005, under the 
heading “Share Ownership of Principal Stockholders and Management.” 

Item 13.  Certain Relationships and Related Transactions

The information required under this Item is incorporated herein by reference to our definitive proxy 

statement pursuant to Regulation 14A, to be filed with the SEC not later than October 28, 2005, under the 
heading “Related Party Transactions.” 

Item 14.  Principal Accountant Fees and Services

The information required under this Item is incorporated herein by reference to our definitive proxy 

statement pursuant to Regulation 14A, to be filed with the SEC not later than October 28, 2005, under the 
heading “Independent Registered Public Accounting Firm.” 

Item 15.  Exhibits and Financial Statement Schedules, and Reports on Form 8-K

(a)(1)

Financial Statements

PART IV 

Description   
Reports of Independent Registered Public Accounting Firm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Consolidated Financial Statements: 
Balance Sheets as of June 30, 2004 and 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Statements of Operations for the years ended June 30, 2003, 2004 and 2005 . . . . . . . . . . . . . . . . . . . .
Statements of Stockholders’ Equity (Deficit) and Comprehensive Income (Loss) for the years 

F-2

F-6
F-7

ended June 30, 2003, 2004 and 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Statements of Cash Flows for the years ended June 30, 2003, 2004 and 2005 . . . . . . . . . . . . . . . . . . . .
Notes to Consolidated Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-8
F-10
F-11

(a)(2) 

Financial Statement Schedules 

Description   
Schedule II—Valuation and Qualifying Accounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

S-1

60 

All other schedules are omitted because they are not required or the required information is shown in 

the consolidated financial statements or notes thereto. 

(a)(3) 

Exhibits 

3.1 (1) 

Certificate of Incorporation of Aspen Technology, Inc., as amended. 

3.2 (2) 

By-laws of Aspen Technology, Inc. 

4.1 (3) 

Specimen Certificate for Shares of Aspen Technology, Inc.’s common stock, $.10 par value.

4.2(2) 

4.3(4) 

4.4(5) 

4.5(6) 

4.6(7) 

4.7(8) 

Rights Agreement dated as of March 12, 1998 between Aspen Technology, Inc. and 
American Stock Transfer and Trust Company, as Rights Agent, including related forms of 
the following: (a) Certificate of Designation of Series A Participating Cumulative Preferred 
Stock of Aspen Technology, Inc.; and (b) Right Certificate. 

Amendment No. 1 dated as of October 26, 2001 to Rights Agreement dated as of March 12, 
1998 between Aspen Technology, Inc. and American Stock Transfer & Trust Company, as 
Rights Agent. 

Amendment No. 2 dated as of February 6, 2002 to Rights Agreement dated as of March 12, 
1998 between Aspen Technology, Inc. and American Stock Transfer & Trust Company. 

Amendment No. 3 dated as of March 19, 2002 to Rights Agreement dated as of March 12, 
1998 between Aspen Technology, Inc. and American Stock Transfer & Trust Company. 

Amendment No. 4 dated as of May 9, 2002 to Rights Agreement dated as of March 17, 1998
between Aspen Technology, Inc. and American Stock Transfer & Trust Company, as Rights 
Agent. 

Amendment No. 5 dated as of June 1, 2003 to Rights Agreement dated as of March 17, 1998
between Aspen Technology, Inc. and American Stock Transfer & Trust Company, as Rights 
Agent. 

4.8(10)

Form of Warrant of Aspen Technology, Inc. dated as of May 9, 2002. 

4.9 (1) 

Form of WD Common Stock Purchase Warrant of Aspen Technology, Inc. dated as of
August 14, 2003. 

4.10 (1) 

Form of WB Common Stock Purchase Warrant of Aspen Technology, Inc. dated as of
August 14, 2003. 

10.1 (11)  Lease Agreement dated as of January 30, 1992 between Aspen Technology, Inc. and 
Teachers Insurance and Annuity Association of America regarding Ten Canal Park, 
Cambridge, Massachusetts. 

10.2(12)

10.3(12)

First Amendment to Lease Agreement dated May 5, 1997 between Aspen Technology, Inc. 
and Beacon Properties, L.P., successor-in-interest to Teachers Insurance and Annuity 
Association of America, regarding Ten Canal Park, Cambridge, Massachusetts. 

Second Amendment to Lease Agreement dated as of August 14, 2000 between Aspen
Technology, Inc. and EOP-Ten Canal Park, L.L.C., successor-in-interest to Beacon 
Properties, L.P. regarding Ten Canal Park, Cambridge, Massachusetts.

10.4(11)

System License Agreement between Aspen Technology, Inc. and the Massachusetts Institute 
of Technology, dated March 30, 1982, as amended. 

61 

10.5(11) Vendor Program Agreement, dated March 29, 1990, between Aspen Technology, Inc. and 

General Electric Capital Corporation.

10.6 (13)  Rider No. 1, dated December 14, 1994, to Vendor Program Agreement between Aspen

Technology, Inc. and General Electric Capital Corporation. 

10.7 (11)†  Letter Agreement, dated March 25, 1992, between Aspen Technology, Inc. and Sanwa 

Business Credit Corporation. 

10.8(17) Third Amendment, effective as of March 28, 2003, to the Letter Agreement by and between

Aspen Technology, Inc. and Fleet Business Credit, LLC (formerly Sanwa Business Credit 
Corporation). 

10.9

Amended and Restated Direct Finance and Services Addendum, dated December 30, 2004
between Aspen Technology, Inc. and Fleet Business Credit, LLC. 

10.10(14)

Loan and Security Agreement, dated as of January 30, 2003, by and among Silicon Valley 
Bank and Aspen Technology, Inc., AspenTech, Inc. and Hyprotech Company.

10.11 (14)  Export-Import Bank Loan and Security Agreement, dated as of January 30, 2003, by and 

among Silicon Valley Bank, Aspen Technology, Inc. and AspenTech, Inc. 

10.12 (29)  Export-Import Bank Borrower Agreement, dated as of April 1, 2005, by and between Aspen

Technology, Inc. and AspenTech Inc. in favor of the Export-Import Bank of the United 
States and Silicon Valley Bank. 

10.13 (29)  Promissory Note (Ex-Im), dated April 1, 2005, by and between Aspen Technology, Inc. and 

AspenTech, Inc. in favor of Silicon Valley Bank. 

10.14(14)

Form of Negative Pledge Agreement, dated as of January 30, 2003, in favor of Silicon Valley 
Bank, executed by Aspen Technology, Inc., AspenTech, Inc. and Hyprotech Company. 

10.15 (14)  Security Agreement, dated as of January 30, 2003, by and between Silicon Valley Bank and 

AspenTech Securities Corporation. 

10.16 (14)  Unconditional Guaranty, dated as of January 30, 2003, by AspenTech Securities 

Corporation in favor of Silicon Valley Bank. 

10.17 (15)  First Loan Modification Agreement, effective as of June 27, 2003, by and among Silicon 

Valley Bank, Aspen Technology, Inc. and AspenTech, Inc. 

10.18(15)

Pledge Agreement, effective as of June 27, 2003, by Aspen Technology, Inc. in favor of
Silicon Valley Bank. 

10.19 (30)  First Loan Modification Agreement (Exim), dated as of September 10, 2004, by and among 

Aspen Technology, Inc., AspenTech, Inc. and Silicon Valley Bank. 

10.20 (30)  Second Loan Modification Agreement, dated as of September 10, 2004, by and among 

Aspen Technology, Inc., AspenTech, Inc. and Silicon Valley Bank. 

10.21 (29)  Fourth Loan Modification Agreement, dated April 1, 2005 by and among Silicon Valley 

Bank, Aspen Technology, Inc. and AspenTech, Inc.

10.22 (29)  Third Loan Modification Agreement (Exim), dated as of April 1, 2005, by and among 

Silicon Valley Bank, Aspen Technology, Inc. and AspenTech, Inc.

10.23 (31)  Sixth Loan Modification Agreement, dated as of June 15, 2005, by and among Aspen

Technology, Inc., 

62 

10.24 (31)  Fourth Loan Modification Agreement—EXIM, dated as of June 15, 2005, by and among 

Aspen Technology, Inc., Aspentech, Inc. and Silicon Valley Bank

10.25(31)

Partial Release and Acknowledgement Agreement, dated as of June 15, 2005, by and among 
Aspen Technology, Inc., Aspentech, Inc. and Silicon Valley Bank

10.26 (31)  Loan Agreement, dated as of June 15, 2005, among Aspen Technology, Inc., Aspen 

Technology Receivables II LLC, Guggenheim Corporate Funding, LLC and the lenders 
named therein

10.27 (31)  Security Agreement, dated as of June 15, 2005, between Aspen Technology Receivables II

LLC and Guggenheim Corporate Funding, LLC 

10.28 (31)  Purchase and Sale Agreement, dated as of June 15, 2005, between Aspen Technology, Inc. 

and Aspen Technology Receivables I LLC 

10.29 (31)  Purchase and Resale Agreement, dated as of June 15, 2005, between Aspen Technology 

Receivables I LLC and Aspen Technology Receivables II LLC 

10.30(28) Non-Recourse Receivables Purchase Agreement, dated December 31, 2003, between Silicon

Valley Bank and Aspen Technology, Inc. 

10.31 (30)  Second Amendment to Non-Recourse Receivables Purchase Agreement, dated as of 
September 30, 2004, by and between Silicon Valley Bank and Aspen Technology, Inc. 

10.32(32) Third Amendment to Non-Recourse Receivables Purchase Agreement, dated as of 

December 31, 2004, by and between Silicon Valley Bank and Aspen Technology, Inc. 

10.33(33)

Fifth Amendment to Non-Recourse Receivables Purchase Agreement, dated as of 
March 31, 2005, by and between Silicon Valley Bank and Aspen Technology, Inc. 

10.34(16)

Securities Purchase Agreement dated June 1, 2003 by and among Aspen Technology, Inc. 
and the Purchasers listed therein.

10.35(16) Repurchase and Exchange Agreement dated as of June 1, 2003 by and among Aspen

Technology, Inc. and the Holders named therein.

10.36(1) 

Investor Rights Agreement dated as of August 14, 2003 by and among Aspen
Technology, Inc. and the Stockholders Named therein. 

10.37(1)  Management Rights Letter dated as of August 14, 2003 by and among Aspen

Technology, Inc. and the entities named therein. 

10.38 (18)  Amended and Restated Registration Rights Agreement dated as of March 19, 2002 between

Aspen Technology, Inc. and the Purchasers named therein. 

10.39 (11)  Equity Joint Venture Contract between Aspen Technology, Inc. and China Petrochemical 

Technology Company.

10.40 (32)+  Purchase and Sale Agreement, dated October 6, 2004, by and among Aspen 

Technology, Inc., Hyprotech Company, AspenTech Canada Ltd., and Hyprotech UK Ltd.
(collectively, the “AspenTech Parties”) and Honeywell International Inc., Honeywell 
Control Systems Limited and Honeywell Limited-Honeywell Limitee (collectively, the 
“Honeywell Parties”). 

10.41(32)+  Amendment No. 1 to the Purchase and Sale Agreement, dated October 6, 2004 by and 

among the AspenTech Parties and the Honeywell Parties. 

63 

10.42(32)+  Hyprotech License Agreement, dated as of December 23, 2004, by and between Aspen

Technology, Inc. and Honeywell International, Inc. 

10.43(32)+  Hyprotech License Agreement, dated as of December 23, 2004, by and between AspenTech

Canada Ltd. and Honeywell Limited-Honeywell Limitee. 

10.44(32)+  Hyprotech License Agreement, dated as of December 23, 2004, by and between Hyprotech

Company and Honeywell Limited-Honeywell Limitee. 

10.45(32)+  Hyprotech License Agreement, dated as of December 23, 2004, by and between

AspenTech Ltd. and Honeywell Control Systems Limited. 

10.46(32)+  Hyprotech License Agreement, dated as of December 23, 2004, by and between Hyprotech

UK Ltd. and Honeywell Control Systems Limited. 

10.47 (11)*  1988 Non-Qualified Stock Option Plan, as amended.

10.48 (19)*  1995 Stock Option Plan. 

10.49 (31)*  Amended and Restated 1995 Directors Stock Option Plan. 

10.50 (19)*  1995 Employees’ Stock Purchase Plan. 

10.51 (20)*  1998 Employees’ Stock Purchase Plan. 

10.52(21)* Amendment No. 1 to 1998 Employees’ Stock Purchase Plan. 

10.53 (22)*  1996 Special Stock Option Plan. 

10.54 (21)*  2001 Stock Option Plan. 

10.55 (34) 

2005 Stock Incentive Plan. 

10.56(11)* Form of Employee Confidentiality and Non-Competition Agreement. 

10.57(35) Employment Agreement, dated as of December 7, 2004, between Aspen Technology, Inc. 

and Mark Fusco. 

10.58 (11)*  Noncompetition, Confidentiality and Proprietary Rights Agreement between Aspen

Technology, Inc. and Lawrence B. Evans. 

10.59 (15)*  Employment and Transition Agreement, dated as of June 30, 2003, by and between Aspen

Technology, Inc. and Lawrence B. Evans. 

10.60(21)* Change in Control Agreement between Aspen Technology, Inc. and David McQuillin dated 

August 12, 1997. 

10.61(23)* Severance Agreement between Aspen Technology, Inc. and David L. McQuillin dated 

September 30, 2002. 

10.62(14)* Employment Agreement, dated as of November 26, 2002, by and between Aspen

Technology, Inc. and David L. McQuillin. 

10.63 (26)*  Letter Agreement, dated June 24, 2003, by and between Aspen Technology, Inc. and David 

L. McQuillin.

10.64(24)* Change in Control Agreement between Aspen Technology, Inc. and Stephen J. Doyle dated 

August 12, 1997. 

10.65(14)* Employment Agreement, dated as of November 26, 2002, by and between Aspen

Technology, Inc. and Stephen J. Doyle. 

64 

10.66(26)* Letter Agreement, dated June 24, 2003, by and between Aspen Technology, Inc. and 

Stephen J. Doyle.

10.67(36) Agreement and General Release delivered as of June 27, 2005, by Aspen Technology, Inc. to 

Stephen J. Doyle.

10.68 (26)*  Employment Agreement, dated April 1, 2002, by and between Aspen Technology, Inc. and 

C. Steven Pringle. 

10.69 (3)*

Letter Agreement, dated June 24, 2003, by and between Aspen Technology, Inc. and 
C. Steven Pringle. 

10.70 (26)*  Offer Letter, dated June 16, 2003, by and between Aspen Technology, Inc. and Charles 

F. Kane. 

10.71(26)* Letter Agreement, dated June 24, 2003, by and between Aspen Technology, Inc. and 

Manolis Kotzabasakis. 

10.72(15)* Letter Amendment, dated August 18, 2003, by and between Aspen Technology, Inc. and 

David L. McQuillin. 

10.73(15)* Letter Amendment, dated August 18, 2003, by and between Aspen Technology, Inc. and 

Stephen J. Doyle.

10.74(15)* Letter Amendment, dated August 18, 2003, by and between Aspen Technology, Inc. and 

C. Steve Pringle. 

10.75(15)* Letter Amendment, dated August 18, 2003, by and between Aspen Technology, Inc. and 

Charles F. Kane. 

10.76(15)* Letter Amendment, dated August 18, 2003, by and between Aspen Technology, Inc. and 

Manolis Kotzabasakis. 

10.77(25)

Securities Purchase Agreement dated as of May 9, 2002 between Aspen Technology, Inc. 
and the Purchasers listed therein, and related Amendment dated June 5, 2002. 

10.78(18) Amended and Restated Securities Purchase Agreement dated as of March 19, 2002 between

Aspen Technology, Inc. and the Purchasers named therein. 

10.79  

Seventh Loan Modification Agreement, dated as of September 13, 2005, by and among 
Aspen Technology, Inc. and Silicon Valley Bank. 

14.1 

21.1  

23.1 

24.1 

31.1 

31.2 

32.1 

Code of Conduct and Business Ethics. 

Subsidiaries of Aspen Technology, Inc. 

Consent of Deloitte & Touche LLP. 

Power of Attorney (included in signature page to Form 10-K). 

Certification of President and Chief Executive Officer pursuant to Exchange Act 
Rules 13a-14 and 15d-14, as adopted pursuant to Section 302 of Sarbanes-Oxley Act of 2002.

Certification of Senior Vice President and Chief Financial Officer pursuant to Exchange Act
Rules 13a-14 and 15d-14, as adopted pursuant to Section 302 of Sarbanes-Oxley Act of 2002.

Certification of President and Chief Executive Officer pursuant to 18 U.S.C. Section 1350, 
as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 

65 

32.2 

Certification of Senior Vice President and Chief Financial Officer pursuant to 18 U.S.C. 
Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 

(1)  Previously filed as an exhibit to the Current Report on Form 8-K of Aspen Technology, Inc. dated 

August 21, 2003 (filed on August 22, 2003), and incorporated herein by reference. 

(2)  Previously filed as an exhibit to the Current Report on Form 8-K of Aspen Technology, Inc. dated 

March 12, 1998 (filed on March 27, 1998), and incorporated herein by reference. 

(3)  Previously filed as an exhibit to Amendment No. 1 to the Registration Statement on Form 8-A of 

Aspen Technology, Inc. (filed on June 12, 1998), and incorporated herein by reference. 

(4)  Previously filed as an exhibit to Amendment No. 2 to the Registration Statement on Form 8-A of 

Aspen Technology, Inc. filed on November 8, 2001, and incorporated herein by reference. 

(5)  Previously filed as an exhibit to Amendment No. 3 to the Registration Statement on Form 8-A of 

Aspen Technology, Inc. filed on February 12, 2002, and incorporated herein by reference. 

(6)  Previously filed as an exhibit to Amendment No. 4 to the Registration Statement on Form 8-A of 

Aspen Technology, Inc. filed on March 20, 2002, and incorporated herein by reference. 

(7)  Previously filed as an exhibit to Amendment No. 5 to the Registration Statement on Form 8-A of 

Aspen Technology, Inc. filed on May 31, 2002, and incorporated herein by reference. 

(8)  Previously filed as an exhibit to Amendment No. 6 to Form 8-A of Aspen Technology, Inc. filed on 

June 2, 2003, and incorporated herein by reference.

(9)  Previously filed as an exhibit to the Current Report on Form 8-K of Aspen Technology, Inc. dated 

June 17, 1998 (filed on June 19, 1998), and incorporated herein by reference. 

(10) Previously filed as an exhibit to the Current Report on Form 8-K of Aspen Technology, Inc. dated 

June 5, 2002 (filed on June 7, 2002), and incorporated herein by reference. 

(11) Previously filed as an exhibit to the Registration Statement on Form S-1 of Aspen Technology, Inc.
(Registration No. 33-83916) (filed on September 13, 1994), and incorporated herein by reference. 

(12) Previously filed as an exhibit to the Annual Report on Form 10-K of Aspen Technology, Inc. for the 

fiscal year ended June 30, 2000, and incorporated herein by reference. 

(13) Previously filed as an exhibit to the Registration Statement on Form S-1 of Aspen Technology, Inc.
(Registration No. 33-88734) (filed on January 29, 1995), and incorporated herein by reference. 

(14) Previously filed as an exhibit to the Quarterly Report on Form 10-Q of Aspen Technology, Inc. for the 

fiscal quarter ended December 31, 2002, and incorporated herein by reference. 

(15) Previously filed as an exhibit to the Annual Report on Form 10-K of Aspen Technology, Inc. for the 

fiscal year ended June 30, 2003, and incorporated herein by reference. 

(16) Previously filed as an exhibit to the Current Report on Form 8-K of Aspen Technology, Inc. filed on 

June 2, 2003, and incorporated herein by reference.

(17) Previously filed as an exhibit to the Quarterly Report on Form 10-Q of Aspen Technology, Inc. for the 

fiscal quarter ended March 31, 2002, and incorporated herein by reference. 

(18) Previously filed as an exhibit to the Current Report on Form 8-K filed by Aspen Technology, Inc. on

March 19, 2002, and incorporated herein by reference. 

(19) Previously filed as an exhibit to the Registration Statement on Form S-8 of Aspen Technology, Inc.
(Registration No. 333-11651) (filed on September 9, 1996), and incorporated herein by reference. 

66 

(20) Previously filed as an exhibit to the Registration Statement on Form S-8 of Aspen Technology, Inc.
(Registration No. 333-44575) (filed on January 20, 1998), and incorporated herein by reference. 

(21) Previously filed as an exhibit to the Definitive Proxy Statement on Schedule 14A of Aspen 

Technology, Inc. filed November 13, 2000, and incorporated herein by reference. 

(22) Previously filed as an exhibit to the Annual Report on Form 10-K of Aspen Technology, Inc. for the 

fiscal year ended June 30, 1997, and incorporated herein by reference. 

(23) Previously filed as an exhibit to the Annual Report on Form 10-K of Aspen Technology, Inc. for the 

fiscal year ended June 30, 2002, and incorporated herein by reference. 

(24) Previously filed as an exhibit to the Registration Statement on Form S-8 of Aspen Technology, Inc.
(Registration No. 333-42536) (filed on July 28, 2000), and incorporated herein by reference. 

(25) Previously filed as an exhibit to the Current Report on Form 8-K of Aspen Technology, Inc. dated 

May 31, 2002 (filed on May 31, 2002), and incorporated herein by reference. 

(26) Previously filed as an exhibit to the Current Report on Form 8-K of Aspen Technology, Inc. dated 

July 11, 2003 (filed on July 11, 2003), and incorporated herein by reference. 

(27) Previously filed as an exhibit to the Definitive Proxy Statement on Schedule 14A of Aspen 

Technology Inc. filed on July 11, 2003 and incorporated herein by reference. 

(28) Previously filed as an exhibit to the Quarterly Report on Form 10-Q of Aspen Technology, Inc. for the 

fiscal quarter ended December 31, 2003, and incorporated herein by reference. 

(29) Previously filed as an exhibit to the Quarterly Report on Form 10-Q of Aspen Technology, Inc. for the 

fiscal quarter ended March 31, 2005, and incorporated herein by reference. 

(30) Previously filed as an exhibit to the Quarterly Report on Form 10-Q of Aspen Technology, Inc. for the 

fiscal quarter ended September 30, 2004, and incorporated herein by reference. 

(31) Previously filed as an exhibit to the Current Report on Form 8-K of Aspen Technology, Inc. dated 

June 15, 2005 (filed on June 20, 2005), and incorporated herein by reference. 

(32) Previously filed as an exhibit to the Quarterly Report on Form 10-Q of Aspen Technology, Inc. for the 

fiscal quarter ended December 31, 2004, and incorporated herein by reference. 

(33) Previously filed as an exhibit to the Quarterly Report on Form 10-Q of Aspen Technology, Inc. for the 

fiscal quarter ended March 31, 2005, and incorporated herein by reference. 

(34) Previously filed as an exhibit to the Current Report on Form 8-K of Aspen Technology, Inc. dated 

May 26, 2005 (filed on June 2, 2005), and incorporated herein by reference. 

(35) Previously filed as an exhibit to the Current Report on Form 8-K of Aspen Technology, Inc. dated 

December 21, 2004 (filed on December 23, 2004), and incorporated herein by reference. 

(36) Previously filed as an exhibit to the Current Report on Form 8-K of Aspen Technology, Inc. dated 

July 1, 2005 (filed on July 8, 2005), and incorporated herein by reference. 

†  Confidential treatment requested as to certain portions

*  Management contract or compensatory plan

67 

(b) Reports on Form 8-K 

On April 7, 2005, we filed a current report on Form 8-K reporting under Item 1.01 that (1) we, 

together with our subsidiary AspenTech, Inc., entered into amendments to our loan and security 
agreement and our Export-Import Bank loan and security agreement, each dated as of January 30, 2003, 
with Silicon Valley Bank, and obtained certain waivers from Silicon Valley Bank relating to these loan
agreements, and (2) we entered into an amendment to our non-recourse receivables purchase agreement, 
dated as of December 31, 2003, with Silicon Valley Bank. 

On May 5, 2005, we filed a current report on Form 8-K reporting under Items 2.02 and 9.01 that we 
had issued a press release announcing our financial results for our fiscal quarter ended March 31, 2005, the 
third quarter of our fiscal year ended June 30, 2005. 

On June 2, 2005 we filed a current report on Form 8-K reporting under Items 1.01, 8.01 and 9.01 that
on May 26, 2005, we held our annual meeting of stockholders for 2004, at which our stockholders elected 
Mark E. Fusco and Gary E. Haroian to serve as Class II directors until our 2007 Annual Meeting of 
stockholders and approved the adoption of our 2005 stock incentive plan. 

On June 20, 2005, we filed a current report on Form 8-K reporting under Items 1.01 and 9.01 that we 

retired all of the outstanding principal amount of our outstanding convertible debentures, together with 
interest accrued thereon and entered into the financing transaction described in that current report. 

68 

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the 
registrant has duly caused this Form 10-K to be signed on its behalf by the undersigned, thereunto duly 
authorized. 

ASPEN TECHNOLOGY, INC. 

Date: September 13, 2005

By: /s/ MARK FUSCO

Mark Fusco 
President and Chief Executive Officer 

Date: September 13, 2005

By: /s/ CHARLES F. KANE

Charles F. Kane 
Senior Vice President and Chief Financial
Officer 

We, the undersigned officers and directors of Aspen Technology, Inc., hereby severally constitute and 

appoint Mark Fusco, Charles F. Kane and Frederic G. Hammond, and each of them singly, our true and 
lawful attorneys with full power to them, and each of them singly, to sign for us and in our names in the 
capacities indicated below, the Annual Report on Form 10-K (the “Annual Report”) filed herewith and 
any and all amendments to the Annual Report and generally to do all such things in our names and on our
behalf in our capacities as officers and directors to enable Aspen Technology, Inc. to comply with the 
provisions of the Securities Exchange Act of 1934 and all requirements of the Securities and Exchange 
Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or
any of them, to said Annual Report on Form 10-K and any and all amendments thereto. 

Pursuant to the requirements of the Securities Exchange Act of 1934, this Form 10-K has been signed 

below by the following persons on behalf of the Registrant and in the capacities indicated as of 
September 13, 2005. 

Signature

Title

/s/   MARK FUSCO
Mark Fusco 

/s/   CHARLES F. KANE
Charles F. Kane

/s/   STEPHEN M. JENNINGS
Stephen M. Jennings 

/s/   DONALD P. CASEY
Donald P. Casey 

/s/   GARY E. HAROIAN
Gary E. Haroian 

/s/   DOUGLAS A. KINGSLEY
Douglas A. Kingsley 

/s/   JOAN C. MCARDLE
Joan C. McArdle 

/s/   MICHAEL PEHL
Michael Pehl

President and Chief Executive Officer (Principal  
Executive Officer) 

Senior Vice President and Chief Financial Officer  
(Principal Financial and Accounting Officer) 

Chairman of the Board of Directors 

Director 

Director 

Director 

Director 

Director 

69 

Management Report on Internal Control over Financial Reporting 

Our management is responsible for establishing and maintaining adequate internal control over 

financial reporting for our company. Internal control over financial reporting is defined in
Rule 13a-15(f) or 15d-15(f) promulgated under the Securities Exchange Act of 1934, as amended, which
we refer to as the Exchange Act, as a process designed by, or under the supervision of, a company’s 
principal executive and principal financial officers and effected by the company’s board of directors, 
management and other personnel, to provide reasonable assurance regarding the reliability of financial 
reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles and includes those policies and procedures that:

• pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the 

transactions and dispositions of the assets of the company; 

• provide reasonable assurance that transactions are recorded as necessary to permit preparation of 
financial statements in accordance with generally accepted accounting principles, and that receipts 
and expenditures of the company are being made only in accordance with authorizations of 
management and directors of the company; and 

• provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, 

use or disposition of the company’s assets that could have a material effect on the financial 
statements. 

Because of its inherent limitations, internal control over financial reporting may not prevent or detect
misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risk that 
controls may become inadequate because of changes in conditions, or that the degree of compliance with
the policies or procedures may deteriorate.

Material Weaknesses 

A material weakness is a significant deficiency (as defined in PCAOB Auditing Standard No. 2), or 

combination of significant deficiencies, that results in more than a remote likelihood that a material 
misstatement of the annual or interim financial statements will not be prevented or detected. 

Our management assessed the effectiveness of our internal control over financial reporting as of 
June 30, 2005, which identified the following material weaknesses in our internal control over financial
reporting as of June 30, 2005:

• Inadequate staffing and ineffective training and communication within the accounting and finance

organization. We did not have (a) a sufficient number of experienced personnel in our accounting 
and finance organization to provide reasonable assurance that transactions were being recorded as
necessary to permit preparation of financial statements in accordance with generally accepted 
accounting principles and (b) training of and communication to employees regarding their duties 
and control responsibilities within the accounting and finance organization was inadequate to
ensure that process and control activities were being carried out appropriately. These are 
considered to be deficiencies in the operation of entity-level controls and the ineffectiveness of such
controls can have the effect of either increasing or decreasing assets, liabilities, revenue and 
expenses. 

•  Ineffective revenue recognition controls. We did not have adequate controls to provide reasonable 
assurance that all elements of contractual arrangements with customers were being recorded in
accordance with generally accepted accounting principles. Specifically, we did not have adequate 
controls to ensure that (a) non-routine arrangements with customers are documented, 

M-1 

(b) documentation of vendor specific objective evidence of services was sufficient, (c) concessions 
were being granted in situations where contracts were being renewed with customers, (d) reseller 
arrangements were identified and accounted for properly, (e) commissions to foreign agents or
resellers were being recorded in the proper period, and (f) maintenance revenue was valid and 
recorded accurately. In addition, reconciliation of revenue-related balance sheet accounts was not 
performed on a timely basis. As a result of these identified deficiencies, material revenue-related 
post-closing adjustments were posted to our books and records and financial statements. These 
adjustments, which are reflected in our financial statements as of, and for the year ended, June 30, 
2005 (as set forth in Item 8 of this Form 10-K), had the effect of decreasing revenue, accounts 
receivable and accrued expenses, and increasing deferred revenue. If we cannot consistently
monitor concessions granted to existing customers, the identified deficiencies could jeopardize our 
ability to justify that we have fixed and determinable fees, which could preclude us from recognizing 
“upfront” revenue on long-term contracts. 

• Inadequate financial statement preparation and review procedures. We did not have effective 

operational controls and procedures that provided reasonable assurance that financial statements
could be prepared in accordance with generally accepted accounting principles. Specifically, we did 
not have adequate controls and procedures with respect to the (a) review of draft financial 
statements, (b) supervision of personnel within the accounting and finance organization, 
(c) identification and recording of new accounts to the general ledger chart of accounts, 
(d) reconciliation of general ledger account balances to supporting detail, (e) recording and analysis 
of capitalized software development costs, foreign denominated receivables, bad debt reserves, 
royalties and other accruals, and (f) documentation of non-routine transactions. As a result of these
identified weaknesses, material post-closing adjustments were posted to our books and records and 
financial statements. These adjustments, which are reflected in our financial statements as of, and 
for the year ended, June 30, 2005 (as set forth in Item 8 of this Form 10-K), caused changes in
assets, liabilities, revenues and expenses. 

• Ineffective and inadequate controls over the accounts receivable function. We did not have effective 
controls over our accounts receivable function. Specifically, we did not have adequate controls to 
(a) determine the creditworthiness of new and existing customers, (b) ensure accurate invoices were 
being submitted to customers, (c) ensure invoice payments were being recorded timely and 
accurately in our records, and (d) determine if bad debt reserves were sufficient. These are both
design and operational weaknesses. As a result of these identified weakenesses, material post-
closing adjustments were posted to our books and records and financial statements. These 
adjustments, which are reflected in our financial statements as of, and for the year ended, June 30, 
2005 (as set forth in Item 8 of this Form 10-K), caused changes in accounts receivable, cash, 
revenue, and general and administrative expenses. 

• Inadequate controls over the accounting for taxes. We did not have either design or operational 

controls over the accounting for income taxes and sales and use taxes that provided reasonable 
assurance that the relevant tax accounts could be prepared in accordance with generally accepted
accounting principles. As a result of these identified weaknesses, material post-closing adjustments 
were posted to our books and records and financial statements. These adjustments, which are 
reflected in our financial statements as of, and for the year ended, June 30, 2005 (as set forth in
Item 8 of this Form 10-K), caused changes to income taxes payable, deferred income tax assets and 
liabilities, the related income tax provision, and accruals for sales and use tax liabilities. 

• Inadequate controls over bank accounts. We did not have controls that operated effectively to 

provide reasonable assurance that cash balances were appropriately reflected on the balance sheet. 
Specifically, we did not have adequate controls to ensure that all cash accounts would be included in
the financial statements and would be reconciled timely. As a result of these identified weaknesses, 

M-2 

post-closing adjustments were posted to our books and records and financial statements. These 
adjustments, which are reflected in our financial statements as of, and for the year ended, June 30, 
2005 (as set forth in Item 8 of this Form 10-K), caused changes to cash, accounts receivable, and 
other income (expense). 

In making this assessment, our management used the criteria set forth by the Committee of 
Sponsoring Organizations of the Treadway Commission in Internal Control-Integrated Framework. 
Because of the material weaknesses described above, management believes that, as of June 30, 2005, our
internal control over financial reporting was not effective based on those criteria. 

If the remedial measures we intend to implement, as described below, are insufficient to address these 
material weaknesses, our financial statements in future periods may contain material misstatements in the 
accounts noted above. 

Deloitte & Touche LLP, our independent registered public accounting firm, has issued a report on

our assessment of our internal control over financial reporting. This report appears on page F-3.

Remediation 

In October 2004, the audit committee of our board of directors began an investigation into the 
accounting treatment of a number of transactions we entered into with alliance partners and other 
customers during our fiscal years ended June 30, 2000 through 2002. Based on a report by the audit 
committee to our board in connection with the investigations and on a report by Deloitte & Touche LLP,
our independent registered public accounting firm, to the audit committee in connection with the 
preparation of the restated financial statements included in an amendment to our Annual Report on 
Form 10-K/A filed with the SEC on March 15, 2005, we concluded that as of December 31, 2004, and again
as of March 31, 2005, material weaknesses existed in the design and operation of our internal controls over 
accounting for taxes and financial reporting with respect to software license revenue recognition. As a 
result of these material weaknesses, our management implemented a number of remedial measures prior
to June 30, 2005. Among other things, we:

• hired additional accounts receivable, tax and internal audit personnel, including a Director of 

Internal Audit and a Director of Tax; 

• implemented a fixed asset accounting and tracking system and completed a physical inventory of all 

property and equipment; 

• established a cross-functional group to manage and monitor software license arrangements that also 

involve consulting services, in order to better assess revenue recognition implications; 

• formulated checklists to define revenue recognition criteria and to document related transactional 

information; 

• implemented a policy requiring quarterly certifications from all of our sales personnel, in order to
assist management in detecting issues that may affect revenue recognition and the accuracy of our 
financial statements; 

• initiated additional training of our sales organization regarding revenue recognition rules and best

practices; 

• initiated additional training of all our employees on the standards and expectations set forth in our 

Code of Conduct and Business Ethics. 

While the remedial measures taken prior to June 30, 2005 enhanced our control environment, they 
were not sufficient in and of themselves, or were not in place for a sufficient period of time, to remediate 
the internal material weaknesses noted in management’s assessment of the effectiveness of our internal 

M-3 

control over financial reporting.  Management therefore has identified the following additional measures 
that they believe will remedy reduce to less than remote or an inconsequential amount the likelihood of 
errors resulting from the material weaknesses described above. We began implementing these measures 
prior to the filing of the Form 10-K, and we expect to implement the remaining measures during fiscal 
2006. 

In order to improve our staffing and training and communication within our accounting and finance

organization: 

• we have hired additional general ledger personnel, including an Accounts Receivable Manager, and 

plan to hire an Assistant Controller, a Sales Tax Analyst and additional revenue recognition 
accounting personnel; and 

• we have begun to consolidate our North American accounting operations into a single shared

service center at our Cambridge, Massachusetts headquarters, which will reduce our geographic 
dispersion and improve management’s oversight of the accounting and finance functions.

In order to improve our revenue recognition controls, we intend to: 

• increase the number of internal personnel and external agencies engaged in the collections process, 
and pursue all appropriate legal measures, in order to collect on outstanding accounts receivable in 
a more timely manner;

• improve our procedures for identifying, approving and recording foreign agent commissions;

• enhance our procedures for identifying and confirming inventory held by resellers; 

• implement a policy of requiring that each customer provide a written confirmation of acceptance of

ongoing maintenance; and 

• increase the frequency of training on revenue recognition accounting for accounting, finance and 
operations personnel, and expand the scope of such training to include additional finance and 
operations personnel. 

In order to improve our financial statement preparation and review procedures, we intend to:

• schedule and hold periodic meetings of cross-functional teams to improve communication and

provide additional training; 

• enhance our existing monthly closing meetings to include a formal planning and financial review

process, and extend attendance at those meetings to a broader group of senior financial 
management and staff;

• implement formalized policies and procedures to ensure that accounts, including bank accounts, are 

identified and added to our general ledger chart of accounts on a timely basis; 

• enhance our existing policies and procedures related to general ledger account reconciliations to 
ensure all accounts are reconciled timely and accurately, including establishment of a formal 
escalation method to ensure that senior financial management are notified of accounts that have
not been reconciled or that have unreconciled variances;

• implement formal policies and procedures to ensure that our accounting and analysis of intangible

assets, reserves and accruals are adequately supported and documented; and 

• implement procedures for the timely preparation of memoranda to support all non-routine

transactions. 

M-4 

In order to improve controls over the accounts receivable function, we intend to: 

• improve the process, procedures and documentation standards for determining the creditworthiness 

of new and existing customers; 

• implement formal policies and procedures to ensure that accurate invoices are submitted to 

customers and that all invoices paid by customers are recorded accurately and timely in our records; 
and 

• improve our bad debt policy to clarify when reserves and write-offs are required, and implement 
detailed analytical and review procedures designed to assess the proper valuation of our accounts 
receivable reserves. 

In order to improve controls over the accounting for taxes, we intend to: 

• implement formal policies and procedures for determining and documenting income tax and sales 
tax liabilities and deferred income tax assets and liabilities, as well as for preparing income tax 
provision calculations; and 

• increase the level of review of all quarterly and annual tax accounts and calculations. 

In order to improve controls over bank accounts, we intend to enhance our existing policies and 

procedures related to the maintenance, accounting and reconciliation of bank accounts. Among other 
things, we will require a periodic evaluation of our existing bank accounts to determine if there are
accounts that can be closed or consolidated and if bank signatory authorizations have been updated 
appropriately.

If the remedial measures described above are insufficient to address any of the six identified material 

weaknesses, our financial statements may contain material misstatements. Among other things, any
unremedied material weakness could result in material post-closing adjustments in future financial
statements. Furthermore, any such unremedied material weakness could have the effects described in 
“Item 1. Business—Factors that may affect our operating results and stock price—We have identified six 
material weaknesses in our internal control over financial reporting as of June 30, 2005 that, if not
remedied effectively, could result in material misstatements in our financial statements for future periods.” 

M-5 

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS 

Reports of Independent Registered Public Accounting Firm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-2

Consolidated Financial Statements: 

Balance Sheets as of June 30, 2004 and 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Statements of Operations for the years ended June 30, 2003, 2004 and 2005 . . . . . . . . . . . . . . . . . . . .

Statements of Stockholders’ Equity (Deficit) and Comprehensive Income (Loss) for the years 

ended June 30, 2003, 2004 and 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Statements of Cash Flows for the years ended June 30, 2003, 2004 and 2005 . . . . . . . . . . . . . . . . . . . .

Notes to Consolidated Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-6

F-7

F-8

F-10

F-11

F-1 

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Board of Directors and Stockholders of Aspen Technology, Inc.: 
Cambridge, Massachusetts 

We have audited the accompanying consolidated balance sheets of Aspen Technology, Inc. and 
subsidiaries (the “Company”) as of June 30, 2004 and 2005, and the related consolidated statements of 
operations, stockholders’ equity (deficit) and comprehensive income (loss), and cash flows for each of the 
three years in the period ended June 30, 2005. Our audits also included the financial statement 
schedule listed in the Index at Item 15(a)(2). These financial statements and financial statement 
schedule are the responsibility of the Company’s management. Our responsibility is to express an opinion 
on the financial statements and financial statement schedule based on our audits. 

We conducted our audits in accordance with the standards of the Public Company Accounting 
Oversight Board (United States). Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material misstatement. An audit 
includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial 
statements. An audit also includes assessing the accounting principles used and significant estimates made 
by management, as well as evaluating the overall financial statement presentation. We believe that our 
audits provide a reasonable basis for our opinion. 

In our opinion, such consolidated financial statements present fairly, in all material respects, the 

financial position of the Company as of June 30, 2004 and 2005, and the results of its operations and its
cash flows for each of the three years in the period ended June 30, 2005, in conformity with accounting
principles generally accepted in the United States of America. Also, in our opinion, such financial 
statement schedule, when considered in relation to the basic consolidated financial statements taken as a 
whole, presents fairly, in all material respects, the information set forth therein.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight 

Board (United States), the effectiveness of the Company’s internal control over financial reporting as of 
June 30, 2005, based on criteria established in Internal Control—Integrated Framework issued by the 
Committee of Sponsoring Organizations of the Treadway Commission, and our report dated 
September 13, 2005 expressed an unqualified opinion on management’s assessment of the effectiveness of 
the Company’s internal control over financial reporting and an adverse opinion on the effectiveness of the 
Company’s internal control over financial reporting.

/s/ DELOITTE & TOUCHE LLP 

Boston, Massachusetts
September 13, 2005

F-2 

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Board of Directors and Stockholders of Aspen Technology, Inc.: 
Cambridge, Massachusetts 

We have audited management’s assessment, included in the accompanying Management’s Report on 
Internal Control over Financial Reporting, that Aspen Technology, Inc. and subsidiaries (the “Company”) 
did not maintain effective internal control over financial reporting as of June 30, 2005, because of the
effect of the material weaknesses identified in management’s assessment based on criteria established in 
Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the 
Treadway Commission. The Company’s management is responsible for maintaining effective internal 
control over financial reporting and for its assessment of the effectiveness of internal control over financial 
reporting. Our responsibility is to express an opinion on management’s assessment and an opinion on the 
effectiveness of the Company’s internal control over financial reporting based on our audit. 

We conducted our audit in accordance with the standards of the Public Company Accounting 
Oversight Board (United States). Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether effective internal control over financial reporting was maintained in
all material respects. Our audit included obtaining an understanding of internal control over financial 
reporting, evaluating management’s assessment, testing and evaluating the design and operating 
effectiveness of internal control, and performing such other procedures as we considered necessary in the 
circumstances. We believe that our audit provides a reasonable basis for our opinions. 

A company’s internal control over financial reporting is a process designed by, or under the 

supervision of, the company’s principal executive and principal financial officers, or persons performing 
similar functions, and effected by the company’s board of directors, management, and other personnel to 
provide reasonable assurance regarding the reliability of financial reporting and the preparation of 
financial statements for external purposes in accordance with generally accepted accounting principles. A 
company’s internal control over financial reporting includes those policies and procedures that (1) pertain
to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and 
dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded 
as necessary to permit preparation of financial statements in accordance with generally accepted
accounting principles, and that receipts and expenditures of the company are being made only in
accordance with authorizations of management and directors of the company; and (3) provide reasonable 
assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the 
company’s assets that could have a material effect on the financial statements. 

Because of the inherent limitations of internal control over financial reporting, including the 

possibility of collusion or improper management override of controls, material misstatements due to error 
or fraud may not be prevented or detected on a timely basis. Also, projections of any evaluation of the 
effectiveness of the internal control over financial reporting to future periods are subject to the risk that 
the controls may become inadequate because of changes in conditions, or that the degree of compliance 
with the policies or procedures may deteriorate. 

A material weakness is a significant deficiency, or combination of significant deficiencies, that results 

in more than a remote likelihood that a material misstatement of the annual or interim financial 
statements will not be prevented or detected. The following material weaknesses have been identified and 
included in management’s assessment: 

1.

Inadequate staffing and ineffective training and communication within the accounting and finance 
organization. The Company does not have a sufficient number of experienced personnel in the 
accounting and finance organization to provide reasonable assurance that transactions are recorded as 
necessary to permit preparation of financial statements in accordance with generally accepted 

F-3 

2.

3.

4.

accounting principles. In addition, training of and communication to employees regarding their duties 
and control responsibilities within the accounting and finance organization is inadequate to ensure 
process and control activities are carried out appropriately. These weaknesses are considered to be 
deficiencies in the operation of such entity level controls and the ineffectiveness of such controls can
have the effect of either increasing or decreasing assets, liabilities, revenues or expenses. 

Ineffective revenue recognition controls. In order to accurately record revenue, the Company must 
account for all elements of specific contractual arrangements. Controls are not operating in a manner 
to provide reasonable assurance that all the elements of specific contractual arrangements with
customers are accounted for in accordance with generally accepted accounting principles. Specifically, 
there are not adequate controls to ensure (a) non-routine arrangements with customers are 
documented; (b) documentation of vendor specific objective evidence of services is sufficient;
(c) concessions are being granted in situations where contracts are being renewed with customers;
(d) reseller arrangements are identified and accounted for properly; (e) commissions to foreign agents 
or resellers have been recorded in the proper period; and (f) maintenance revenue is valid and
recorded accurately. In addition, reconciliations of revenue related balance sheet accounts are not
performed on a timely basis. As a result of these identified deficiencies, revenue related material post-
closing adjustments have been posted to the Company’s books and records and its financial 
statements. These adjustments, which are reflected in the accompanying financial statements for the 
year ended June 30, 2005, had the effect of decreasing revenue, decreasing accounts receivable, 
increasing deferred revenue and decreasing accrued expenses. Such deficiencies could continue to 
result in post closing adjustments and, if the Company cannot maintain its ability to consistently 
monitor concessions granted to existing customers, this could jeopardize its ability to justify that it has 
fixed and determinable fees and will therefore be unable to recognize revenue up front on long-term 
contracts. 

Inadequate financial statement preparation and review procedures. The Company does not have effective 
operational procedures and controls that provide reasonable assurance that financial statements can 
be prepared in accordance with generally accepted accounting principles. Such ineffective controls 
and procedures include (a) ineffective review of draft financial statements; (b) lack of supervision of
personnel within the accounting and finance organization; (c) ineffective processes to identify and 
record new accounts to the general ledger chart of accounts; (d) reconciliation of general ledger 
account balances to supporting detail; (e) ineffective processes to record and analyze capitalized 
software development costs, foreign denominated receivables, bad debt reserves, royalties and other 
accruals, and (f) insufficient documentation of non-routine transactions. As a result of these identified
weaknesses, material post-closing adjustments have been posted to the Company’s books and records 
and its financial statements. These adjustments, which are reflected in the accompanying financial 
statements for the year ended June 30, 2005, caused both increases and decreases in assets, liabilities, 
revenues and expenses. Such weaknesses could continue to impact the balances in all of the accounts 
previously mentioned. 

Ineffective and inadequate controls over the accounts receivable function. The Company does not have
effective procedures and controls over its accounts receivable function to provide reasonable 
assurance that (a) new customers are creditworthy and existing customers continue to be creditworthy; 
(b) accurate invoices are submitted to customers; (c) all invoices paid are recorded timely and 
accurately in its records; and (d) bad debt reserves are sufficient. These are both design and 
operational weaknesses. As a result of these identified weaknesses, material post-closing adjustments 
have been posted to the Company’s books and records and its financial statements. These 
adjustments, which are reflected in the accompanying financial statements for the year ended June 30, 
2005, caused increases or decreases to accounts receivable, cash, accrued expenses, revenue and 

F-4 

5.

6.

general and administrative expenses. Such weaknesses could continue to impact the balances in all of 
the accounts previously mentioned. 

Inadequate controls over the accounting for taxes. The Company has neither designed nor operated 
controls over the accounting for income and sales and use taxes that provide reasonable assurance 
that the relevant tax accounts can be prepared in accordance with generally accepted accounting 
principles. As a result of these identified weaknesses, material post-closing adjustments have been 
posted to the Company’s books and records and its financial statements. These adjustments, which are 
reflected in the accompanying financial statements for the year ended June 30, 2005, caused changes 
to income taxes payable, deferred income tax assets and liabilities, the related income tax provision 
and accruals for sales tax liabilities. Such weaknesses could continue to impact the balances in all of 
the accounts previously mentioned. 

Inadequate controls over bank accounts. The Company does not have controls that have operated 
effectively to provide reasonable assurance that cash balances are appropriately reflected on the 
balance sheet. Specifically, controls have not operated effectively over (a) the timely reconciliation of 
certain cash accounts; and (b) whether all cash accounts have been included in the financial 
statements. As a result of these identified weaknesses, post-closing adjustments have been posted to 
the Company’s books and records and its financial statements. These adjustments, which are reflected 
in the accompanying financial statements for the year ended June 30, 2005, caused changes to cash, 
accounts receivable, and other income (expense). Such weaknesses could continue to impact the 
balances in all of the accounts previously mentioned as well as others.

These material weaknesses were considered in determining the nature, timing, and extent of audit tests 
applied in our audit of the consolidated financial statements and financial statement schedule as of and for 
the year ended June 30, 2005, of the Company and this report does not affect our report on such financial 
statements and financial statement schedule. 

In our opinion, management’s assessment that the Company did not maintain effective internal
control over financial reporting as of June 30, 2005, is fairly stated, in all material respects, based on the 
criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring 
Organizations of the Treadway Commission. Also in our opinion, because of the effect of the material 
weaknesses described above on the achievement of the objectives of the control criteria, the Company has
not maintained effective internal control over financial reporting as of June 30, 2005, based on the criteria 
established in Internal Control—Integrated Framework issued by the Committee of Sponsoring 
Organizations of the Treadway Commission.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight 
Board (United States), the consolidated financial statements and financial statement schedule as of and for 
the year ended June 30, 2005, of the Company and our report dated September 13, 2005 expressed an 
unqualified opinion on those financial statements and financial statement schedule. 

/s/ DELOITTE & TOUCHE LLP 

Boston, Massachusetts
September 13, 2005

F-5 

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS 

ASSETS 

Current assets: 
Cash and cash equivalents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accounts receivable, net of allowance for doubtful accounts of $3,697 in 2004 and $4,653 in 2005. . . . . . . . . . . . .
Unbilled services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current portion of long-term installments receivable, net of unamortized discount of $962 in 2004 and 

$345 in 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred tax asset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prepaid expenses and other current assets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long-term installments receivable, net of unamortized discount of $14,161 in 2004 and $2,846 in 2005. . . . . . . . .
Retained interest in sold receivables, net of unamortized discount of $2,941 in 2005 . . . . . . . . . . . . . . . . . . . . . . .
Property and leasehold improvements, at cost: 
Building and improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Computer equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchased software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Furniture and fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leasehold improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Less—Accumulated depreciation and amortization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Computer software development costs, net of accumulated amortization of $29,806 in 2004 and $37,734 in 2005 .
Purchased intellectual property, net of accumulated amortization of $966 in 2004 and $1,531 in 2005. . . . . . . . . .
Other intangible assets, net of accumulated amortization of $28,161 in 2004 and $35,339 in 2005 . . . . . . . . . . . . .
Goodwill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred tax asset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT) 

Current liabilities:
Current portion of long-term obligations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accounts payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unearned revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred tax liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long-term obligations, less current portion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred revenue, less current portion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred tax liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Commitments and contingencies (Notes 10, 11, 12 and 13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Series D redeemable convertible preferred stock, $0.10 par value— Authorized—367,000 shares in 2004 and
2005 Issued and outstanding—363,364 shares in 2004 and 2005 (Liquidation preference of $140,381 as of 
June 30, 2005) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Stockholders’ equity (deficit): 
Common stock, $0.10 par value—Authorized—120,000,000 shares Issued—41,716,887 shares in 2004 and

43,299,816 shares in 2005 Outstanding—41,483,423 shares in 2004 and 43,066,352 shares in 2005 . . . . . . . . . . .
Additional paid-in capital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accumulated deficit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accumulated other comprehensive income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Treasury stock, at cost—233,464 shares of common stock in 2004 and 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total stockholders’ equity (deficit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

June 30, 

2004 

2005 

(In thousands, 
except share data)

$ 107,677
50,874
15,518

$ 68,149
52,254
9,826

25,244 
31
10,084
209,428
65,527
—

1,828
15,074
30,756
7,713
7,924
63,295 
44,631
18,664 
16,863 
1,295
19,571
14,736
2,492
3,158
$  351,734 

$ 58,595
7,689
75,426
18,051
33,462
325
193,548
1,952
5,363
4,220
11,527

—

5,355 
692
11,483
147,759
19,425
16,667

—
11,888
25,683
6,907
6,346
50,824 
39,436
11,388 
17,411 
730
12,123
14,729
1,354
2,656
$  244,242 

$

1,042
5,086
79,321
23,480
34,854
—
143,783
338
2,093
2,760
23,143

—

106,761 

121,210

4,173
338,804
(314,906)
805
(513)
28,363
$  351,734 

4,330
345,278
(398,727)
547
(513)
(49,085)
$  244,242 

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

F-6 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

Years Ended June 30, 
2004 
(In thousands, except per share data) 

2003

2005

Revenues: 
Software licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Service and other. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cost of revenues: 
Cost of software licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of service and other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of technology related intangible assets . . . . . . . . . . . . . .
Impairment of technology related intangible and computer software
development assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total cost of revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 162,354 
184,102
346,456 

$158,661 
174,335
332,996 

$129,233
140,334
269,567

13,916
106,868
8,219

15,577
99,183
7,270

16,864
82,638
7,112

8,704
137,707

3,250
125,280

—
106,614

Gross profit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

208,749 

207,716 

162,953

Operating costs:
Selling and marketing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Research and development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General and administrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long-lived asset impairment charges. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restructuring charges and FTC legal costs. . . . . . . . . . . . . . . . . . . . . . .
Loss (gain) on sales and disposals of assets . . . . . . . . . . . . . . . . . . . . . .
Total operating costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

105,879
65,143 
29,644
105,543
41,080
(52)
347,237

100,028
58,955 
32,727
967
20,085
(879)
211,883

96,187
47,236
49,175
—
24,907
13,635
231,140

Income (loss) from operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(138,488)

(4,167)

(68,187)

Interest income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest expense. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign currency exchange gain (loss). . . . . . . . . . . . . . . . . . . . . . . . . . .
Income (loss) before provision for income taxes and equity in

earnings from joint ventures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provision for income taxes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equity in earnings (losses) from joint ventures . . . . . . . . . . . . . . . . . . .
Net income (loss) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accretion of preferred stock discount and dividend . . . . . . . . . . . . . . .
Net income (loss) attributable to common shareholders . . . . . . . . . . .
Basic and diluted net income (loss) per share attributable to 

common shareholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic and diluted weighted average shares outstanding . . . . . . . . . . . .

8,191 
(7,132) 
(195)

7,296 
(4,940) 
252

6,168
(4,195)
618

(137,624)
(1,076)
(514)
(139,214)
(9,184)

(65,596)
(3,776)
—
(69,372)
(14,450)
$(148,398) $ (28,164) $ (83,822)

(1,559)
(19,896)
(351)
(21,806)
(6,358)

$

(3.86)  $

(0.69)  $

38,476

40,575

(1.98)
42,381

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

F-7 

 
 
 
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T

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

Cash flows from operating activities: 
Net income (loss) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating

activities: 

Depreciation and amortization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss on securitization of installments receivable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stock compensation — modification of stock options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Asset impairment charges and write-offs under restructuring charges . . . . . . . . . . . . . . . . . .
(Gain) loss on the disposal of property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gain on repurchase of convertible debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred income taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Research and development costs subject to common stock settlement . . . . . . . . . . . . . . . . . .
Changes in assets and liabilities: 
Accounts receivable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unbilled services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prepaid expenses and other current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long-term installments receivable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accounts payable and accrued expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unearned revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net cash provided by operating activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cash flows from investing activities:
Purchase of property and leasehold improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds from sale of property. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Capitalized computer software development costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Increase) decrease in other assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Decrease in short-term investments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cash used in the purchase of businesses, net of cash acquired. . . . . . . . . . . . . . . . . . . . . . . . .
Net cash provided by (used in) investing activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cash flows from financing activities:
Issuance of Series D redeemable convertible preferred stock and common stock warrants,

net of issuance costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Retirement of Series B redeemable convertible preferred stock . . . . . . . . . . . . . . . . . . . . . . .
Payment of Series B redeemable convertible preferred stock dividend . . . . . . . . . . . . . . . . . .
Payment of amounts owed to Accenture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Issuance of common stock under employee stock purchase plans . . . . . . . . . . . . . . . . . . . . . .
Exercise of stock options and warrants. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Payments of long-term debt and capital lease obligations . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repurchase of convertible debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net cash provided by (used in) financing activities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Effect of exchange rate changes on cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . .
Increase (decrease) in cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cash and cash equivalents, beginning of year. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cash and cash equivalents, end of year . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplemental disclosure of cash flow information: 
Income taxes paid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Interest paid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Supplemental disclosure of non-cash financing activities: 
Accretion of discount on Series D redeemable convertible preferred stock . . . . . . . . . . . . . .
Modification of Series B convertible preferred stock to Series B redeemable convertible

preferred stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Issuance of common stock in settlement of Series B convertible preferred stock dividend. . .
Supplemental disclosure of cash flows related to acquisitions:
The Company acquired certain companies as described in Note 4. These acquisitions are 

summarized as follows:

2003 

Years Ended June 30, 
2004 
(In thousands)

2005 

$ (139,214 )

$ (21,806 )

$ (69,372)

31,480
—
—
112,897
288
—
30
1,082

19,159
16,714
7,658
(5,753)
(10,240)
(12,984 )
(2,689 )
3,815
22,243

(5,235)
—
(7,661)
1,135
18,535
—
6,774

26,959
—
—
6,018
(170)
(299)
4,204
—

26,881
604
3,457
15,233
4,179
(10,424 )
(9,418 )
(4,482 )
40,936

(2,711)
1,096
(8,247)
2,432
—
(200)
(7,630)

—
—
—
(8,433)
3,293
150
(6,603)
—
(11,593)
572
17,996
33,571
$ 51,567

89,341
(30,000)
(296)
(10,068)
3,022
4,121
(4,733)
(29,196)
22,191
613
56,110
51,567
$ 107,677

$
$

$

1,695 
5,902 

$
$

6,569 
5,967 

— $

3,181

$ 57,537 
2,662 
$

$
$

$

$

— 
598 

525
(200)
325 

24,987
13,906
1,171
1,190
(271)
—
(1,276)
—

(1,205)
5,704
(1,422)
39,394
(1,878)
5,431
(2,122)
11,651
25,888

(5,160)
1,954
(8,545)
(59)
—
—
(11,810)

—
—
—
—
1,853
3,607
(2,436)
(56,745)
(53,721)
115
(39,528)
107,677
$ 68,149

$
$

$

$
$

$

$

2,700
4,116

3,758

—
—

—
—
—

Fair value of assets acquired, excluding cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Payments in connection with the acquisitions, net of cash acquired . . . . . . . . . . . . . . . . . . . .
Liabilities assumed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

$

$

3,027
—
3,027 

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

F-10

 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 

(1) Operations 

Aspen Technology, Inc. (the Company) and its subsidiaries are a leading supplier of integrated 

software and services to the process industries, which consist of oil and gas, petroleum, chemicals, 
pharmaceutical and other industries that manufacture and produce products from a chemical process. The 
Company develops software to design, operate, manage and optimize its customers’ key business processes. 

(2) Significant Accounting Policies 

(a) Principles of Consolidation 

The accompanying consolidated financial statements include the results of operations of the Company 

and its wholly owned subsidiaries. All material intercompany balances and transactions have been 
eliminated in consolidation.

(b) Management Estimates 

The preparation of financial statements in conformity with accounting principles generally accepted in 

the United States of America requires management to make estimates and assumptions. These estimates 
and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets 
and liabilities at the date of the financial statements and the reported amounts of revenues and expenses 
during the reporting period. Actual results could differ from those estimates. 

(c) Cash and Cash Equivalents and Short-Term Investments 

Cash and cash equivalents consist of short-term, highly liquid investments with original maturities of 

three months or less. Cash and cash equivalents as of June 30, 2004 and 2005 were as follows (in
thousands): 

Description   
Cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Money market funds. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . .

(d) Derivative Instruments and Hedging 

June 30, 2004

June 30, 2005

Total 
Market
Value 
$ 75,498
32,179
$107,677

Total 
Amortized 
Cost 
$ 75,498
32,179
$107,677

Total 
Market
Value 
$57,127
11,022
$68,149

Total 
Amortized
Cost 
$57,127
11,022
$68,149

The Company follows the provisions of Statement of Financial Accounting Standards (SFAS) 
No. 133, “Accounting for Derivative Instruments and Hedging Activities.” SFAS No. 133, as amended by 
SFAS No. 138, requires that all derivatives, including foreign currency exchange contracts, be recognized 
on the balance sheet at fair value. Derivatives that are not hedges must be adjusted to fair value through 
earnings. If a derivative is a hedge, depending on the nature of the hedge, changes in the fair value of the 
derivative are either offset against the change in fair value of assets, liabilities or firm commitments 
through earnings or recognized in other comprehensive income until the hedged item is recognized in 
earnings. The ineffective portion of a derivative’s change in fair value is immediately recognized in
earnings. 

F-11

 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(2) Significant Accounting Policies (Continued) 

Forward foreign exchange contracts are used primarily by the Company to hedge certain balance 

sheet exposures resulting from changes in foreign currency exchange rates. Such exposures have
historically resulted from portions of the Company’s installments receivable that are denominated in 
currencies other than the U.S. dollar, primarily the Euro, Japanese Yen, Canadian Dollar and the British 
Pound Sterling. In addition, the Company incurred a potential exposure as part of the June 2005 
securitization of installments receivable, in that the Company is obligated to cover the exposure in the 
installments receivable that were transferred to its subsidiary, resulting from changes in foreign currency 
exchange rates. 

The foreign exchange contracts are entered into to hedge recorded installments receivable, both held 

and securitized, made in the normal course of business, and accordingly are not speculative in nature. As 
part of its overall strategy to manage the level of exposure to the risk of foreign currency exchange rate 
fluctuations, the Company hedges the majority of its installments receivable denominated in foreign 
currencies. 

The Company’s obligation to cover the potential exposure in the securitized installments receivable
represents an embedded derivative. The Company calculates the value of this obligation at each balance 
sheet date, and if the value of the obligation represents an obligation, the fair value is recorded as a 
liability. To the extent that valuation of this obligation represents an asset to the Company, no entry is 
recorded. As of June 30, 2005, the value of this embedded derivative represented an asset to the Company, 
and as such, no entry was recorded. 

In addition, in May 2002, as part of the acquisition of Hyprotech Ltd. and related subsidiaries of AEA 

Technology plc (collectively, Hyprotech), the Company initiated loans with two foreign subsidiaries. The 
two loans, denominated in British pounds and Canadian dollars, were intended to be a natural hedge 
against foreign currency risk associated with installment receivable contracts acquired with Hyprotech that 
were denominated in a currency other than their functional currency. The loan denominated in British 
pounds was repaid in December 2003 and the loan denominated in Canadian dollars was repaid in 
January 2004. 

At June 30, 2005, the Company had effectively hedged $23.0 million of installments receivable and 

accounts receivable denominated in foreign currency. The Company does not hold or transact in financial
instruments for purposes other than to hedge foreign currency risk. The gross value of the held and 
securitized long-term installments receivable that were denominated in foreign currency was $21.7 million 
at June 30, 2004 and $28.5 million at June 30, 2005. The installments receivable as of June 2005 mature at 
various times through December 2010. There have been no material gains or losses recorded relating to 
hedge contracts for the periods presented. 

The Company records its foreign currency exchange contracts at fair value in its consolidated balance 
sheet and the related gains or losses on these hedge contracts are recognized in earnings. Gains and losses 
resulting from the impact of currency exchange rate movements on forward foreign exchange contracts are 
designated to offset certain accounts and installments receivable and are recognized as other income or 
expense in the period in which the exchange rates change and offset the foreign currency losses and gains 
on the underlying exposures being hedged. During fiscal 2003, 2004 and 2005 the net gain recognized in 
the consolidated statements of operations was not material. A small portion of the forward foreign 
currency exchange contract is designated to hedge the future interest income of the related receivables. 
The ineffective portion of a derivative’s change in fair value is recognized currently through earnings  

F-12

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(2) Significant Accounting Policies (Continued) 

regardless of whether the instrument is designated as a hedge. The gains and losses resulting from the 
impact of currency rate movements on forward currency exchange contracts are recognized in other 
comprehensive income for this portion of the hedge. During fiscal 2003, 2004 and 2005, net loss deferred in 
other comprehensive income was not material. 

The following table provides information about the Company’s foreign currency derivative financial 

instruments outstanding as of June 30, 2005. The information is provided in U.S. dollar amounts, as 
presented in the Company’s consolidated financial statements. The table presents the notional amount (at 
contract exchange rates) and the weighted average contractual foreign currency rates: 

Currency   

Euro. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Japanese Yen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Canadian Dollar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
British Pound Sterling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Swiss Franc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Notional 
Amount

$ 13,744
3,183
2,848
2,267
977
$ 23,019

Estimated 
Fair 
Value*

Average
Contract
Rate 

(In thousands) 
$ 13,050
3,048
2,857
2,054
947
$ 21,956

0.79
106.01
1.24
0.54
1.23

Payments on the hedged receivables due during fiscal 2006 equal $9.7 million.

*

The estimated fair value is based on the estimated amount at which the contracts could be settled 
based on the forward rates as of June 30, 2005. The market risk associated with these instruments 
resulting from currency exchange rate movements is expected to offset the market risk of the 
underlying installments being hedged. The credit risk is that the Company’s banking counterparties 
may be unable to meet the terms of the agreements. The Company minimizes such risk by limiting its 
counterparties to major financial institutions. In addition, the potential risk of loss with any one party 
resulting from this type of credit risk is monitored. Management does not expect any loss as a result of 
default by other parties. However, there can be no assurances that the Company will be able to 
mitigate market and credit risks described above. 

(e) Depreciation and Amortization 

The Company provides for depreciation and amortization, primarily computed using the straight-line 

method, by charges to operations in amounts estimated to allocate the cost of the assets over their 
estimated useful lives, as follows: 

Asset Classification 
Building and improvements. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Computer equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchased software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Furniture and fixtures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leasehold improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Estimated Useful Life 

7-30 years
3 years
3-5 years
3-10 years

Life of lease or asset, whichever is shorter

F-13

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(2) Significant Accounting Policies (Continued) 

Depreciation expense was $16.4 million, $13.1 million and $9.8 million for the years ended June 30, 

2003, 2004 and 2005, respectively. 

(f) Revenue Recognition 

The Company recognizes revenue in accordance with Statement of Position (SOP) No. 97-2, 
“Software Revenue Recognition,” as amended and interpreted. License revenue, including license 
renewals, consists principally of revenue earned under fixed-term and perpetual software license 
agreements and is generally recognized upon shipment of the software if collection of the resulting 
receivable is probable, the fee is fixed or determinable, and vendor-specific objective evidence (VSOE) of 
fair value exists for all undelivered elements. The Company determines VSOE based upon the price 
charged when the same element is sold separately. Maintenance and support VSOE represents a 
consistent percentage of the license fees charged to customers. Consulting services VSOE represents 
standard rates that the Company charges its customers when the Company sells its consulting services 
separately. For an element not yet being sold separately, VSOE represents the price established by 
management having the relevant authority when it is probable that the price, once established, will not
change before the separate introduction of the element into the marketplace. Revenue under license 
arrangements, which may include several different software products and services sold together, are 
allocated to each element based on the residual method in accordance with SOP 98-9, “Modification of 
SOP 97-2, Software Revenue Recognition, with Respect to Certain Transactions.” Under the residual 
method, the fair value of the undelivered elements is deferred and subsequently recognized when earned. 
The Company has established sufficient VSOE for professional services, training and maintenance and 
support services. Accordingly, software license revenues are recognized under the residual method in 
arrangements in which software is licensed with professional services, training and maintenance and 
support services. The Company uses installment contracts as a standard business practice and has a history 
of successfully collecting under the original payment terms without making concessions on payments, 
products or services. 

The Company has a practice of licensing its products through resellers in certain regions. For software 

licensed through these distribution channels, revenue is recognized at the time of delivery to the end 
customer, when persuasive evidence of an arrangements exists, the fee is fixed or determinable and 
collection is reasonably assured. 

Maintenance and support services are recognized ratably over the life of the maintenance and support 

contract period. Maintenance and support services include telephone support and unspecified rights to 
product upgrades and enhancements. These services are typically sold for a one-year term and are sold 
either as part of a multiple element arrangement with software licenses or are sold independently at time 
of renewal. The Company does not provide specified upgrades to its customers in connection with the 
licensing of its software products.

Service revenues from fixed-price contracts are recognized using the proportional performance 
method, measured by the percentage of costs (primarily labor) incurred to date as compared to the 
estimated total costs (primarily labor) for each contract. When a loss is anticipated on a contract, the full 
amount thereof is provided currently. Service revenues from time and expense contracts and consulting
and training revenue are recognized as the related services are performed. Services that have been
performed but for which billings have not been made are recorded as unbilled services, and billings that  

F-14

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(2) Significant Accounting Policies (Continued) 

have been recorded before the services have been performed are recorded as unearned revenue in the 
accompanying consolidated balance sheets. In accordance with the Emerging Issues Task Force (EITF) 
Issue No. 01-14, “Income Statement Characterization of Reimbursements Received for ‘Out-of-Pocket’ 
Expenses Incurred,” reimbursement received for out-of-pocket expenses is recorded as revenue and not as 
a reduction of expenses. 

(g) Computer Software Development Costs 

Certain computer software development costs are capitalized in the accompanying consolidated 
balance sheets. Capitalization of computer software development costs begins upon the establishment of 
technological feasibility. In accordance with SFAS No. 86, “Accounting for the Costs of Computer 
Software to be Sold, Leased, or otherwise Marketed,” the Company defines the establishment of 
technological feasibility as the completion of a detail program design. Amortization of capitalized 
computer software development costs is provided on a product-by-product basis using the straight-line 
method, beginning upon commercial release of the product, and continuing over the remaining estimated 
economic life of the product, not to exceed three years. Total amortization expense charged to operations
was approximately $5.1 million, $6.5 million and $8.0 in fiscal 2003, 2004 and 2005, respectively. During the 
years ended June 30, 2003 and 2004, the Company recorded impairment charges associated with the 
capitalized computer software development costs of certain products, totaling $2.9 million and 
$3.3 million, respectively (see Note 2(m)).

(h) Foreign Currency Translation 

The financial statements of the Company’s foreign subsidiaries are translated in accordance with
SFAS No. 52, “Foreign Currency Translation.”  The determination of functional currency is based on the 
subsidiaries’ relative financial and operational independence from the Company. Foreign currency
exchange gains or losses for certain wholly owned subsidiaries are credited or charged to the accompanying
consolidated statements of operations since the functional currency of the subsidiaries is the U.S. dollar. 
Foreign currency transaction gains or losses are credited or charged to the accompanying consolidated 
statements of operations as incurred. Gains and losses from foreign currency translation related to entities 
whose functional currency is their local currency are credited or charged to the accumulated other 
comprehensive income (loss) account, included in stockholders’ equity in the accompanying consolidated 
balance sheets. 

(i) Net Income (Loss) per Share 

Basic earnings per share was determined by dividing net income (loss) attributable to common

shareholders by the weighted average common shares outstanding during the period. Diluted earnings per 
share was determined by dividing net income (loss) attributable to common shareholders by diluted 
weighted average shares outstanding. Diluted weighted average shares reflects the dilutive effect, if any, of
potential common shares. To the extent their effect is dilutive, potential common shares include common 
stock options and warrants, based on the treasury stock method, convertible debentures and preferred 
stock, based on the if-converted method, and other commitments to be settled in common stock. The  

F-15

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(2) Significant Accounting Policies (Continued) 

calculations of basic and diluted net income (loss) per share attributable to common shareholders and
basic and diluted weighted average shares outstanding are as follows (in thousands, except per share data): 

Net income (loss) attributable to common shareholders . . . . . . . . . . .
Basic weighted average common shares outstanding . . . . . . . . . . . . . .
Weighted average potential common shares . . . . . . . . . . . . . . . . . . . . .
Diluted weighted average shares outstanding . . . . . . . . . . . . . . . . . . . .
Basic net income (loss) per share attributable to 

2003

2005

Years Ended June 30, 
2004
$(148,398) $(28,164) $(83,822)
42,381
—
42,381

40,575
—
40,575

38,476
—
38,476

common shareholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 

(3.86)  $ 

(0.69 )  $ 

(1.98)

Diluted net income (loss) per share attributable to 

common shareholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

(3.86)  $

(0.69)  $

(1.98)

The following potential common shares were excluded from the calculation of dilutive weighted 

average shares outstanding as their effect would be anti-dilutive (in thousands): 

Convertible preferred stock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options and warrants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convertible debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Obligation subject to common stock settlement . . . . . . . . . . . . . . . . . . . . . . . . . .
Preferred stock dividend, to be settled in common stock. . . . . . . . . . . . . . . . . . .
Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Years Ended June 30, 
2004
36,336 
21,457 
1,071  
—  
1,197  
60,061 

2003
3,135 
9,965 
1,628 
1,159 
121 
16,008 

2005
36,336
20,129
—
—
3,727
60,192

(j) Concentration of Credit Risk 

Financial instruments that potentially subject the Company to concentrations of credit risk are

principally cash and cash equivalents, accounts receivable and installments receivable. The Company 
places its cash and cash equivalents and investments in highly rated institutions. Concentration of credit 
risk with respect to receivables is limited to certain customers (end users and distributors) to which the 
Company makes substantial sales. To reduce risk, the Company routinely assesses the financial strength of
its customers, hedges specific foreign installments receivable and routinely sells its installments receivable 
to financial institutions with limited recourse and without recourse. As a result, the Company believes that 
the accounts and installments receivable credit risk exposure is limited. As of June 30, 2004 and 2005, the 
Company had no customers that represented 10% of total accounts and installments receivable. 

(k) Allowance for Doubtful Accounts 

The Company makes judgments as to its ability to collect outstanding receivables and provide 
allowances for the portion of receivables when it is probable that a loss has been incurred. Provisions are 
made based upon a specific review of all significant outstanding invoices and an analysis of historical write-
off rates. In determining these provisions, the Company analyzes its historical collection experience and 
current economic trends. 

F-16

 
 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(2) Significant Accounting Policies (Continued) 

(l) Financial Instruments 

Financial instruments consist of cash and cash equivalents, accounts receivable, installments 

receivable, and foreign exchange contracts. The estimated fair value of these financial instruments 
approximates their carrying value and, except for accounts receivable and installments receivable, is based 
primarily on market quotes. 

(m) Intangible Assets, Goodwill and Impairment of Long-Lived Assets 

Intangible assets subject to amortization consist of the following at June 30, 2004 and 2005

(in thousands): 

Asset Class 
Acquired technology. . . . . . . . . . . . . . . . . .
Uncompleted contracts . . . . . . . . . . . . . . .
Trade name . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Estimated
Useful Life
3-5 years
4 years
10 years
3-12 years

June 30, 2004

June 30, 2005

Gross 
Carrying 
Amount
$ 44,737
2,005
758
232
$ 47,732

Accumulated
Amortization
$ 25,434
1,888
644
195
$ 28,161

Gross  
Carrying  
Amount
$ 44,467
2,005
758
232
$ 47,462

Accumulated
Amortization
$ 32,428 
1,988
720
203
$ 35,339 

Aggregate amortization expense for intangible assets subject to amortization was $7.4 million, 
$7.6 million and $7.3 million for the years ended June 30, 2003, 2004 and 2005, respectively, and is 
expected to be $7.1 million, $5.0 million and none in each of the next three fiscal years, respectively. 

The changes in the carrying amount of the goodwill by reporting unit for the years ended June 30, 

2004 and 2005 were as follows (in thousands):

Asset Class 
Carrying amount as of June 30, 2003 . . . . . . . . . . . . . . . . . . .
Goodwill acquired during fiscal 2004. . . . . . . . . . . . . . . . . . .
Effect of exchange rates used for translation . . . . . . . . . . . .
Carrying amount as of June 30, 2004 . . . . . . . . . . . . . . . . . . .
Effect of exchange rates used for translation . . . . . . . . . . . .
Carrying amount as of June 30, 2005 . . . . . . . . . . . . . . . . . . .

Reporting Unit 

License
$2,358
—
6
2,364
(1)
$2,363

Consulting 
Services 
$147
366
—
513
—
$513

Maintenance
 and  
Training 
$11,828
—
31
11,859

(6)  

$11,853

Total 
$ 14,333
366
37
14,736
(7)
$ 14,729

In October 2002, management determined that goodwill should be tested for impairment as a result of 

the following factors: 

• The Company experienced a significant decline in demand for products in its manufacturing/supply-
chain product line beginning at the end of the quarter ended September 30, 2002 and continuing
through the end of the quarter ended December 31, 2002. While these products had been
underperforming for several quarters, the lack of demand during this quarter was significant. 
Discussions with potential customers revealed that investment in this area would not be  

F-17

 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(2) Significant Accounting Policies (Continued) 

forthcoming in the near future and purchases would continue to be delayed indefinitely. As a result, 
management reduced revenue projections for several of these products. The underperforming 
manufacturing/supply-chain products included Aspen Metals, PetroVantage, Aspen Bulk, Aspen
Buy & Sell, AEP and MIMI. 

• There was a significant decline in the fair market value of the Company’s common stock and thus its 

market capitalization. The Company’s market capitalization was approximately $260 million on 
July 1, 2002. By December 31, 2002, the market capitalization had decreased to a low of 
approximately $108 million. In addition, during this six month period the Company’s market 
capitalization reached a low of approximately $22 million on October 11, 2002. 

An independent third party valued the Company’s three reporting units: license, consulting services, and 
maintenance and training. The valuation was based on an income approach, using a five-year present value 
calculation of income, and a market approach, using comparable company valuations. Based on this
analysis, it was determined that the full values of the goodwill associated with the license reporting unit and
consulting services reporting unit were impaired. This resulted in a $74.2 million aggregate impairment
charge included on the accompanying consolidated statement of operations as long-lived asset impairment 
charges. It was also determined that the fair value of the maintenance and training reporting unit exceeded 
its carrying value, resulting in no impairment of its goodwill. At December 31, 2003 and 2004, the 
Company conducted its annual impairment test and determined that goodwill was not impaired. The 
Company’s next annual impairment test will occur on December 31, 2005. 

The Company evaluates it long-lived assets, which include property and leasehold improvements, 
intangible assets and capitalized software development costs for impairment as events and circumstances 
indicate that the carrying amount may not be recoverable and at a minimum at each balance sheet date. 
The Company evaluates the realizability of its long-lived assets based on profitability and undiscounted 
cash flow expectations for the related asset or subsidiary. 

Fiscal 2004 During the fourth quarter of fiscal 2004, the Company completed a comprehensive 

review of its product offerings, in an effort to reduce duplicative efforts and cut costs. As a result, 
management decided to discontinue development of certain products, which resulted in an impairment of 
technology related intangible and computer software development assets of $3.3 million, related to the 
impairment of certain computer software development costs. These products were considered part of the 
next-generation manufacturing/supply chain products. Management’s decision was based on concerns
about the future revenue projections for these products, and the assessment of costs remaining to bring 
these products to market. 

During the fourth quarter of fiscal 2004, the Company recorded long-lived asset impairment charges 
of $1.0 million. This was partially due to management’s decision, as part of the Company’s June 2004 cost-
cutting initiatives that resulted in the June 2004 restructuring plan, to discontinue certain internal capital 
projects that had previously been put on hold. In addition, certain fixed assets that supported research and
development efforts were considered impaired as a result of the consolidation decisions made in the fourth 
quarter product offering review. 

Fiscal 2003 Concurrent with the restructuring plan and goodwill impairment test that was initiated in 

October 2002, as discussed previously, the Company cancelled certain internal capital projects and 
discontinued development and support for certain non-critical products, resulting in the evaluation of the  

F-18

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(2) Significant Accounting Policies (Continued) 

realizibility of long-lived assets and the recording of an impairment charge related to various long-lived 
assets. The Company recorded an impairment of technology related intangible and computer software 
development assets of $8.7 million, and long-lived asset impairment charges of $31.4 million. The 
impairment of technology related intangible and computer software development assets consisted of 
computer software development costs and intangible assets that were considered to be impaired because 
they will either no longer be used or their carrying values were in excess of their fair values. The assets that 
will no longer be used were identified by management’s decisions to discontinue future development 
efforts associated with certain products. The carrying values of the remaining assets were compared to the 
fair values of those assets resulting in an impairment. The fair values were determined by forecasting the 
future net cash flows associated with the products. 

The long-lived asset impairment charges primarily consisted of a $23.6 million charge related to the 

intellectual property purchased from Accenture in February 2002. The fair value of this asset was 
determined by forecasting the future net cash flows associated with the asset and then was compared to its 
carrying value. This intellectual property is used primarily in the development of manufacturing/supply 
chain software products, within the license line of business. The revenue expectations for the 
manufacturing/supply chain product line were significantly reduced by management, which prompted the 
review for impairment. The remaining $7.8 million charge consisted of fixed assets and internal capital 
projects that were considered to be impaired because they will either no longer be used or their carrying 
values were in excess of their fair values. The assets that will no longer be used were identified by 
management’s decisions to discontinue future development efforts associated with certain products. The 
carrying values of the remaining assets were compared to the fair values of those assets resulting in an
impairment. The fair values were determined by forecasting the future net cash flows associated with the 
products. 

(n) Comprehensive Income (Loss) 

Comprehensive income (loss) is defined as the change in equity of a business enterprise during a 
period from transactions and other events and circumstances from non-owner sources. Comprehensive
income (loss) is disclosed in the accompanying consolidated statements of stockholders’ equity and 
comprehensive income (loss). The components of accumulated other comprehensive income (loss) as of 
June 30, 2004 and 2005 are made up of cumulative translation adjustments. 

(o) Fair Value of Stock Options 

The Company issues stock options to its employees and outside directors and provides employees the 
right to purchase stock pursuant to stockholder approved stock option and employee stock purchase plans, 
which are described more fully in Note 8. The Company accounts for these plans under the recognition
and measurement principles of Accounting Principles Board Opinion No. 25, “Accounting for Stock Issued 
to Employees,” and has elected the disclosure-only alternative under SFAS No. 123, “Accounting for 
Stock-Based Compensation,” as amended by SFAS No. 148. No material stock-based employee 
compensation cost is reflected in net income (loss), as all options granted under those plans had an
exercise price equal to the market value of the underlying common stock on the date of grant. 

F-19

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(2) Significant Accounting Policies (Continued) 

For pro forma disclosures, the estimated fair value of the options is amortized over the vesting period, 
typically four years, and the estimated fair value of the stock purchases under the employee stock purchase 
plan is recorded during the six-month purchase period. The following table illustrates the effect on net
income and earnings per share if the Company had applied the fair value recognition provisions of FASB 
Statement No. 123 to stock-based employee compensation (in thousands, except per share data): 

Net income (loss) attributable to common shareholders (in 

thousands) 
—As reported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Less: Stock-based compensation expense determined under fair 

value based method for all awards, net of related tax effects . . .
Add: Stock-based compensation expense included in reported net 
income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pro forma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Net income (loss) attributable to common shareholders per share 

—Basic and diluted— 
As reported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pro forma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2003

2004

2005

$ (148,398) $ (28,164) $ (83,822)

(14,566) 

(15,246 ) 

(8,991)

—

1,171
$ (162,964) $ (43,410) $ (91,642)

—

$

(3.86)  $
(4.24) 

(0.69)  $
(1.07) 

(1.98)
(2.16)

The fair value of each option grant is estimated on the date of grant using the Black-Scholes option

pricing model with the following assumptions used for grants during the applicable period: 

Risk free interest rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected dividend yield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected volatility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weighted average fair value per option . . . . . . . . . . . . . . . . . . . . .

2003

2004

2005

2.78-4.15% 3.27-3.50%  3.49-4.17%

None
5 Years

None 
5-7 Years 

125%

$2.63

99% 

$2.51 

None
5 Years 

100%

$4.74 

The fair value of the shares issued under the employee stock purchase plan is estimated on the date of 

grant using the Black-Scholes option pricing model with the following assumptions used for grants during
the applicable period: 

Risk free interest rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected dividend yield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected volatility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weighted average fair value per option . . . . . . . . . . . . . . . . . . . .

(p) Income Taxes 

2004 

2003
1.16-1.64% 3.49-3.50% 3.49-4.17%
None
6 months

None
6 months

None
6 months

2005

125%

$0.96

99%

$4.46

100%

$1.96

Deferred income taxes are recognized based on temporary differences between the financial

statement and tax bases of assets and liabilities. Deferred tax assets and liabilities are measured using the  

F-20

 
 
 
 
 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(2) Significant Accounting Policies (Continued) 

statutory tax rates and laws expected to apply to taxable income in the years in which the temporary 
differences are expected to reverse. Valuation allowances are provided against net deferred tax assets if, 
based upon the available evidence, it is more likely than not that some or all of the deferred tax assets will 
not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future 
taxable income and the timing of the temporary differences becoming deductible. Management considers, 
among other available information, scheduled reversals of deferred tax liabilities, projected future taxable 
income, limitations of availability of net operating loss carryforwards, and other matters in making this
assessment. 

Income taxes are provided on undistributed earnings of foreign subsidiaries where such earnings are 

expected to be remitted to the U.S. parent company. The Company determines annually the amount of 
unremitted earnings of foreign subsidiaries to invest indefinitely in its non-U.S. operations. Unrecognized
provisions for taxes on undistributed earnings of foreign subsidiaries, which are considered permanently 
invested, are not material to the Company’s consolidated financial position or results of operations. 

(q) Legal Fees 

The Company accrues estimated future legal fees associated with outstanding litigation for which 

management has determined that it is probable that a loss contingency exists. Liabilities for loss
contingencies arising from claims, assessments, litigation and other sources are recorded when it is 
probable that a liability has been incurred and the amount of the claim assessment or damages can be 
reasonably estimated. 

(r) Advertising costs 

The Company charges advertising costs to expense as the costs are incurred. The Company recorded 
advertising expenses of $14.1 million, $4.0 million and $7.3 million during the years ended June 30, 2003, 
2004 and 2005, respectively. As of June 30, 2004 and 2005, the Company had $0.8 million and no prepaid 
advertising on the accompanying consolidated balance sheets. 

(s) Recently Issued Accounting Pronouncements 

In December 2004, the FASB issued SFAS No. 123R, “Share-Based Payment.”  SFAS No. 123R is a 

revision of SFAS No. 123, “Accounting for Stock-Based Compensation,” and supersedes Accounting
Principles Board Opinion No. 25, “Accounting for Stock Issued to Employees,” and its related 
implementation guidance. SFAS No. 123R focuses primarily on accounting for transactions in which an
entity obtains employee services in share-based payment transactions. SFAS No. 123R requires entities to 
recognize stock compensation expense for awards of equity instruments to employees based on the grant-
date fair value of those awards (with limited exceptions). SFAS No. 123R is effective for the Company’s 
first annual reporting period that begins after June 15, 2005. The Company expects to adopt SFAS 
No. 123R using the Statement’s modified prospective application method. Adoption of SFAS No. 123R is
expected to increase stock compensation expense. Assuming the continuation of current programs, the 
Company’s preliminary estimate is that additional stock compensation expense for fiscal 2006 will be in the 
range of $5 million to $6 million. In addition, SFAS No. 123R requires that the excess tax benefits related 
to stock compensation be reported as a financing cash inflow rather than as a reduction of taxes paid in 
cash from operations. 

F-21

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(3) Restructuring Charges and FTC Legal Costs 

Restructuring charges and FTC legal costs consist of the following (in thousands):

Restructuring charges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FTC legal costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2003 
$28,122 
12,958 
$ 41,080 

Years ended June 30, 
2004
$ 15,193 
4,892 
$ 20,085 

2005
$ 25,065
(158)
$ 24,907

During fiscal 2005, the Company recorded $24.9 million in restructuring charges and legal costs 

related to the challenge by the Federal Trade Commission (FTC) to the Compay’s acquisition of
Hyprotech. Of this amount, $14.4 million related to headcount reductions and facility consolidations 
associated with the June 2004 restructuring plan that did not qualify for accrual at June 30, 2004, $3.8
million related to the May 2005 restructuring charge, $0.4 million related to the accretion of discounted 
restructuring accruals, and $6.5 million related to adjustments to prior restructuring accruals, all offset by 
$0.2 million reduction in legal cost estimates related to the FTC’s challenge of the Company’s acquisition 
of Hyprotech. 

(a) Fiscal 2005 Restructuring Plan

In May 2005, the Company initiated a plan to consolidate several corporate functions and to reduce its 
operating expenses. The plan to reduce operating expenses primarily resulted in headcount reductions, and
also included the termination of a contract and the consolidation of facilities. These actions resulted in an
aggregate restructuring charge of $3.8 million, recorded in the fourth quarter of fiscal 2005. 

As of June 30, 2005, there was $2.5 million remaining in accrued expenses relating to the remaining 

severance obligations and lease payments. During the year ended June 30, 2005, the following activity was 
recorded (in thousands): 

Fiscal 2005 Restructuring Plan
Restructuring charge . . . . . . . . . . . . . . . . . . . . . . . .
Fiscal 2005 payments . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2005 . . . . . . . . . . . . . .
Expected final payment date . . . . . . . . . . . . . . . . . .

Employee  
Closure/  
Severance,
Consolidation
Benefits, and
of Facilities 
Related Costs
3,465
84
$
$
(1,005)
— $
2,460
84
$
July 2006
May 2007

$

Contract 
Termination  
Costs 
$  300
(300)
$ —

Total 
$  3,849
(1,305)
$ 2,544

Closure/consolidation of facilities: Approximately $0.1 million of the restructuring charge related to 

the termination of a facility lease. The facility lease had a remaining term of two years. The amount
accrued is an estimate of the remaining obligation under the lease, reduced by expected income from the 
sublease of the underlying properties. 

Employee severance, benefits and related costs: Approximately $3.4 million of the restructuring charge 

related to the reduction in headcount. Approximately 130 employees, or 10% of the workforce, were 
eliminated under the restructuring plan. The employees were primarily located in North America and 
Europe. All business units were affected, including services, sales and marketing, research and 
development, and general and administrative. 

F-22

 
 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(3) Restructuring Charges and FTC Legal Costs (Continued) 

Contract termination costs: Approximately $0.3 million of the restructuring charge related to charges 
associated with the termination of a contract for a future user conference. The contract was terminated in 
June 2005. 

(b) Fiscal 2004 Restructuring Plan 

In June 2004, the Company initiated a plan to reduce its operating expenses in order to better align its 

operating cost structure with the current economic environment and to improve operating margins. The 
plan to reduce operating expenses resulted in the consolidation of facilities, headcount reductions, and the
termination of operating contracts. These actions resulted in an aggregate restructuring charge of 
$23.5 million, recorded in the fourth quarter of fiscal 2004. During the year ended June 30, 2005, the 
Company recorded $14.4 million related to headcount reductions and facility consolidations associated 
with the June 2004 restructuring plan that did not qualify for accrual at June 30, 2004. In addition, the 
Company recorded $0.4 million in restructuring charges related to the accretion of the discounted
restructuring accrual and a $0.8 million decrease to the accrual related to changes in estimates of 
severance benefits and sub lease terms. 

As of June 30, 2005, there was $8.7 million remaining in accrued expenses relating to the remaining 

severance obligations and lease payments. During the year ended June 30, 2005, the following activity was 
recorded (in thousands): 

Fiscal 2004 Restructuring Plan
Restructuring charge . . . . . . . . . . . . . . .  
Fiscal 2004 payments . . . . . . . . . . . . .
Impairment of assets . . . . . . . . . . . . .
Accrued expenses, June 30, 2004 . . . . .
Restructuring charge . . . . . . . . . . . . .
Impairment of assets . . . . . . . . . . . . .
Fiscal 2005 payments . . . . . . . . . . . . .
Restructuring charge—Accretion . .
Change in estimate—Revised 

assumptions . . . . . . . . . . . . . . . . . . .  

Accrued expenses, June 30, 2005 . . . . .
Expected final payment date . . . . . . . . .

Closure/  
Consolidation  
of Facilities and 
Contract exit costs 

Employee 
Severance,
Benefits, and 
Related Costs 

$

$

20,484 
(8,435)
—
12,049
9,132
—
(12,915)
446 

1,191
(280)
—
911
4,349
—
(4,534)
3 

$

(287)
8,425
September 2012

$

(497)
232
December 2006

Asset 
Impairments 
$ 1,776
—
(1,776)  
—
968
(968)  
—
— 

Total 
$  23,451
(8,715)
(1,776)
12,960
14,449
(968)
(17,449)
449

—

(784)
$ — $ 8,657

Closure/consolidation of facilities: Approximately $20.5 million and $9.1 million of the fiscal 2004 and 
2005 restructuring charges, respectively, related to the termination of facility leases and other lease related 
costs. The costs recorded in fiscal 2005 related to termination activities did not qualify for accrual as of 
June 30, 2004. The facility leases had remaining terms ranging from several months to eight years. The 
amount accrued is an estimate of the remaining obligation under the lease or actual costs to buy-out leases, 
reduced by expected income from the sublease of the underlying properties. 

Employee severance, benefits and related costs: Approximately $1.2 million and $4.4 million of the
fiscal 2004 and 2005 restructuring charges, respectively, related to the reduction in headcount. In the  

F-23

 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(3) Restructuring Charges and FTC Legal Costs (Continued) 

aggregate, approximately 147 employees, or 9% of the workforce, were eliminated under the restructuring 
plan implemented by management. The fiscal 2005 restructuring charge related to employees had not been 
notified in a manner that would allow for accrual as of June 30, 2004. Such notification occurred in the 
quarter ended September 30, 2004. A majority of the employees were located in North America, although 
Europe was affected as well. All business units were affected, including services, sales and marketing, 
research and development, and general and administrative. 

Impairment of assets: Approximately $1.8 million and $1.0 million of the fiscal 2004 and 2005

restructuring charges, respectively, related to charges associated with the impairment of fixed assets 
associated with the closed and consolidated facilities. These assets were reviewed for impairment in
accordance with SFAS No. 144, and were considered to be impaired because their carrying values were in
excess of their fair values. 

(c) Fiscal 2003 Restructuring Plan 

During fiscal 2003, the Company recorded $41.1 million in net restructuring charges and FTC legal 

costs. Of this amount, $28.1 million is associated with an October 2002 restructuring plan, and 
$13.0 million is legal costs related to the FTC’s challenge of the Company’s acquisition of Hyprotech.

In October 2002, management initiated a plan to further reduce operating expenses in response to 

first quarter revenue results that were below expectations and to general economic uncertainties. In
addition, the Company revised revenue expectations for the remainder of the fiscal year and beyond, 
primarily related to the manufacturing/supply chain product line, which had been affected the most by the 
current economic conditions. The plan to reduce operating expenses resulted in headcount reductions, 
consolidation of facilities, and discontinuation of development and support for certain non-critical
products. These actions resulted in an aggregate restructuring charge of $28.1 million. During fiscal 2004, 
the Company recorded a $4.9 million decrease to the accrual related to revised assumptions associated 
with lease exit costs, particularly the buyout of a remaining lease obligation, and severance benefit
obligations. During fiscal 2005, the Company recorded a $6.9 million increase to the accrual primarily due 
to a change in the estimate of the facility vacancy term, extending to the term of the lease. 

F-24

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(3) Restructuring Charges and FTC Legal Costs (Continued) 

As of June 30, 2005, there was $11.9 million remaining in accrued expenses relating to the remaining 

severance obligations and lease payments. The components of the restructuring plan are as follows (in
thousands): 

Fiscal 2003 Restructuring Plan
Restructuring charge . . . . . . . . . . . . . . . . . .
Additional impairment of assets. . . . . . .
Fiscal 2003 payments . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2003 . . . . . . . .
Fiscal 2004 payments . . . . . . . . . . . . . . . .
Change in estimate—Revised 

assumptions . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2004 . . . . . . . .
Fiscal 2005 payments . . . . . . . . . . . . . . . .
Change in estimate—Revised 

assumptions . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2005 . . . . . . . .
Expected final payment date . . . . . . . . . . . .

$

Closure/  
Consolidation  
of Facilities 

17,347
—
(3,548)
13,799
(2,567)

(4,507) 
6,725
(2,213)

$

Employee  
Severance,
Benefits, and 
Related  
Costs 
10,028
—
(7,297)
2,731
(2,170)

(269)
292
(63)

Impairment
of Assets and 
Disposition  
Costs 

$

714  
866
—
1,580
(770)

(134 ) 
676
(403)

Total 
$ 28,089
866
(10,845)
18,110
(5,507)

(4,910)
7,693
(2,679)

$

7,186 
11,698
September 2012

$

(69)
160
Dec 2005

$

(195 ) 
78
Jan 2006

6,922
$ 11,936

Closure/consolidation of facilities: Approximately $17.4 million of the restructuring charge related to 
the termination of facility leases and other lease related costs. Of this amount, approximately $8.7 million 
was recorded in the three months ended December 31, 2002 and approximately $8.7 million was recorded 
as a result of the June 2003 increase to the accrual. The facility leases had remaining terms ranging from 
several months to eight years. The amount accrued is an estimate of the remaining obligation under the 
lease or actual costs to buy-out leases, reduced by expected income from the sublease of the underlying
properties. The June 2003 increase to the accrual is primarily due to revised estimates related to sublease 
assumptions, as actual sublease rates have been significantly less than originally estimated and the 
Company has experienced delays contracting with sub-lessors. The revisions to the accrual that occurred in
fiscal 2004 relate to revisions made to sublease assumptions and to the buyout of a remaining lease 
obligation and the revisions to the accrual that occurred in fiscal 2005 relate to revised estimates with
respect to the facility vacancy term. 

Employee severance, benefits and related costs: Approximately $10.0 million of the restructuring
charge related to the reduction in headcount. Of this amount, approximately $8.2 million was recorded in 
the three months ended December 31, 2002 and approximately $1.8 million was recorded as a result of the 
June 2003 increase to the accrual. Approximately 400 employees, or 20% of the workforce, were 
eliminated under the restructuring plan implemented by management. All geographic regions and business 
units were affected, including services, sales and marketing, research and development, and general and 
administrative. The revisions to the accrual that occurred in fiscal 2004 relate to revisions of estimates of 
severance terms and benefit levels. 

F-25

 
 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(3) Restructuring Charges and FTC Legal Costs (Continued) 

Impairment of assets and disposition costs: Approximately $0.7 million of the restructuring charge 
related to charges associated disposing of certain products and assets. This consisted of costs related to 
preparing certain development groups for divestment or closure, offset by a gain related to the cancellation
of a note payable to a European government. The note payable was related to the research and 
development group that was divested as part of the restructuring plan. The revisions to the accrual that 
occurred in fiscal 2004 relate to changes in estimates of ongoing costs of disposal activities. 

(d) Fiscal 2002 Restructuring Plan 

In the fourth quarter of fiscal 2002, management initiated a plan to reduce operating expenses and to 

restructure operations around the Company’s two primary product lines, engineering software and 
manufacturing/supply chain software. The Company reduced worldwide headcount by approximately 10%, 
or 200 employees, closed and consolidated facilities, and disposed of certain assets, resulting in an
aggregate restructuring charge of $13.2 million. During fiscal 2004, the Company recorded a $1.5 million
decrease to the accrual related to revised assumptions associated with lease exit costs, particularly the 
buyout of a remaining lease obligation, and severance obligations. During fiscal 2005, the Company 
recorded a $0.2 million increase to the accrual due to changes in estimates of sublease assumptions and 
severance settlements. 

As of June 30, 2005, there was $0.9 million remaining in accrued expenses relating to the remaining 

severance obligations and lease payments. The components of the restructuring plan are as follows (in
thousands): 

Fiscal 2002 Restructuring Plan
Restructuring charge . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fiscal 2002 payments . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2002 . . . . . . . . . . . . . . . . . .
Fiscal 2003 payments . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2003 . . . . . . . . . . . . . . . . . .
Fiscal 2004 payments . . . . . . . . . . . . . . . . . . . . . . . . . .
Change in estimate—Revised assumptions . . . . . . .
Accrued expenses, June 30, 2004 . . . . . . . . . . . . . . . . . .
Fiscal 2005 payments . . . . . . . . . . . . . . . . . . . . . . . . . .
Change in estimate—Revised assumptions . . . . . . .
Accrued expenses, June 30, 2005 . . . . . . . . . . . . . . . . . .
Expected final payment date . . . . . . . . . . . . . . . . . . . . . .

Closure/  
Consolidation  
of Facilities 

$

$

4,901 
—
4,901
(695)
4,206
(1,302)
(1,221)
1,683
(994)
93
782
September 2012

Employee  
Severance,
Benefits, and  
Related  
Costs 

$

$

8,285 
(1,849)
6,436
(4,748)
1,688
(1,060)
(320)
308
(284)
87
111
December 2005

Total 
$13,186
(1,849)
11,337
(5,443)
5,894
(2,362)
(1,541)
1,991
(1,278)
180
893

$

Closure/consolidation of facilities: Approximately $4.9 million of the restructuring charge related to 

the termination of facility leases and other lease-related costs. The facility leases had remaining terms 
ranging from several months to nine years. The amount accrued is an estimate of the actual costs to buy-
out leases or to sublease the underlying properties. The revisions to the accrual that occurred in fiscal 2004
relate to revisions made to sublease assumptions, as actual sublease rates have been significantly less than

F-26

 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(3) Restructuring Charges and FTC Legal Costs (Continued) 

originally estimated and the Company has experienced delays contracting with sub-lessors, and to the 
buyout of a remaining lease obligation. 

Employee severance, benefits and related costs: Approximately $8.3 million of the restructuring charge 

related to the reduction in headcount. Approximately 200 employees, or 10% of the workforce, were 
eliminated under the changes to the business plan implemented by management. Business units impacted 
included sales and marketing, services, research and development, and general and administrative, across 
all geographic areas. The revisions to the accrual that occurred in fiscal 2004 relate to revisions of 
estimates of severance terms and benefit levels. 

Write-off of assets: Approximately $1.2 million of the restructuring charge related to the write-off of 

prepaid royalties related to third-party software products that the Company will no longer support and sell. 

(f) Fiscal 1999 Restructuring Plan 

In the fourth quarter of fiscal 1999, the Company experienced a significant slow down in certain of its

businesses due to difficulties that customers in its core vertical markets of refining, chemicals and
petrochemicals were experiencing. These markets were experiencing a significant decrease in pricing for 
their products, which significantly reduced their revenues and related cash inflows. In turn, these 
companies began to reduce their capital spending and lengthened the evaluation and decision-making 
cycle for purchases. The impact of this on the Company was dramatic, lowering license revenues from 
expected levels by a significant amount. Based on these reduced revenues, Company management made 
significant changes to the business plan, resulting in a restructuring plan. The restructuring plan resulted in
a pre-tax restructuring charge totaling $17.9 million. During fiscal 2004, the Company recorded a 
$0.4 million decrease to the accrual related to revised assumptions associated with lease exit costs.

F-27

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(3) Restructuring Charges and FTC Legal Costs (Continued) 

As of June 30, 2005, there was no balance remaining in accrued expenses relating to the restructuring. 

The components of the restructuring plan are as follows (in thousands): 

Fiscal 1999 Restructuring Plan
Restructuring and other charges . . . . . . . . . . . . . .
Write-off of assets, and other . . . . . . . . . . . . . . .
Fiscal 1999 payments . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 1999 . . . . . . . . . . . . . .
Fiscal 2000 payments . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2000 . . . . . . . . . . . . . .
Fiscal 2001 payments . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2001 . . . . . . . . . . . . . .
Change in estimate—Revised assumptions . . .
Fiscal 2002 payments . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2002 . . . . . . . . . . . . . .

Fiscal 2003 net sublease receipts (lease 

payments) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses, June 30, 2003 . . . . . . . . . . . . . .
Fiscal 2004 payments, net of sublease receipts 
(lease payments) . . . . . . . . . . . . . . . . . . . . . . . .
Change in estimate—sub-lease assumptions . .
Accrued expenses, June 30, 2004 . . . . . . . . . . . . . .
Fiscal 2005 payments . . . . . . . . . . . . . . . . . . . . . .
Change in estimate—sub-lease assumptions . .
Accrued expenses, June 30, 2005 . . . . . . . . . . . . . .

Closure/ 
Consolidation 
of Facilities 
$10,224 
(5,440)
(24)
4,760
(1,408)
3,352
(1,484)
1,868
(250)
(1,243)
375

147
522

(4)
(428)
90
(43)
(47)
$ —

Employee 
Severance,
Benefits, and
Related  
Costs 
$  4,324
—
(2,386)
1,938
(1,462)
476
(126)
350
— 
(350)
—

Write-off 
of Assets 
$  3,060 
(3,060) 
— 
— 
— 
— 
— 
— 
—  
— 
— 

Other 
$  259 
(101 ) 
(57 ) 
101 
(97 ) 
4 
— 
4 
— 
(4 ) 
— 

Total
$ 17,867
(8,601)
(2,467)
6,799
(2,967)
3,832
(1,610)
2,222
(250)
(1,597)
375

—
—

—
— 
—

— 
— 

— 
—  
— 

— 
— 

— 
— 
— 

$ — $ — 

$  —  

147
522

(4)
(428)
90
(43)
(47)
$  —

Closure/consolidation of facilities: Approximately $10.2 million of the restructuring charge related to 

the termination of facility leases and other lease-related costs. The facility leases had remaining terms 
ranging from one month to six years. The amount accrued reflects the Company’s best estimate of actual 
costs to buy out the leases in certain cases or the net cost to sublease the properties in other cases. 
Included in this amount is the write-off of certain assets, primarily building and leasehold improvements 
and revisions to certain obligations that relate to the closing of facilities. The adjustments to the accrual 
during fiscal 2002 and 2004 are due to changes in some of the original sublease assumptions, as actual sub-
lease terms have been longer than originally estimated. 

Employee severance, benefits and related costs: Approximately $4.3 million of the restructuring charge 

related to the reduction in workforce. Approximately 200 employees, or 12% of the workforce, were 
eliminated as the Company rationalized its product and service offerings against customer needs in various
markets. 

Write-off of assets: Approximately $3.1 million of the restructuring and other charge related to the 
write-off of certain assets that had been determined to be of no further value to the Company as a direct  

F-28

 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(3) Restructuring Charges and FTC Legal Costs (Continued) 

consequence of the change in the business plans that have been made as a result of the restructuring. 
These business plan changes are the result of management’s assessment and rationalization of certain non-
core products and activities acquired in recent years. The write-off was based on management’s assessment 
of the current fair value of certain assets, including intangible assets, and their resale value, if any.

(4) Acquisitions and Dispositions 

(a) Dispositions During Fiscal Year 2005

In December 2004, as part of the Company’s FTC settlement, the Company completed the sale of its 

operator training business and ownership of rights to the intellectual property to the Hyprotech
engineering products to Honeywell International. In addition, in July 2004 the Company completed the 
sale of its AXSYS product line to Bentley Systems, which was also a condition to the FTC settlement. See 
discussion of both dispositions in Note 12(a). 

(b) Acquisitions During Fiscal Year 2004 

In July 2003, the Company acquired 100% of APC Consulting, Inc., a consulting services provider
based in Houston, Texas, for a purchase price of approximately $0.5 million in cash. This acquisition was 
accounted for as a purchase, and accordingly, the results of operations from the date of acquisition are 
included in the Company’s consolidated statements of operations commencing as of the acquisition date. 

The purchase price was allocated to the fair market value of assets acquired and liabilities assumed, as 

follows (in thousands): 

Description   
Goodwill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquired technology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Customer contracts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Net fair value of tangible assets acquired, less liabilities assumed . . . . . . . . . . . . . . . . . . .
Total purchase price . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Life

—
3 years
1 year

Amount 
$366
79
70
515 
10
$525

Pro forma information related to this acquisition is not presented, as the effect of this acquisition was 

not material. 

(c) Acquisitions and Dispositions During Fiscal Year 2003 

In January 2003, the Company acquired a portion of the salesforce of Soteica S.R.L. and purchased 
the exclusive marketing rights held by Soteica. Soteica was a sales agent of Hyprotech that held exclusive 
rights to market Hyprotech products in certain South and Latin American countries, including Argentina,
Brazil, Mexico and Venezuela. The purchase price consists of 12 quarterly payments of $0.3 million
beginning in April 2003, the net present value of which is $3.0 million. Allocation of the purchase price was 
based on an independent appraisal of the fair value of the net assets acquired. 

F-29

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(4) Acquisitions and Dispositions (Continued) 

The purchase price was allocated to the fair market value of assets acquired and liabilities assumed, as 

follows (in thousands): 

Description   
Marketing rights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Net fair value of tangible assets acquired, less liabilities assumed . . . . . . . . . . . . . . . .
Total purchase price . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Life
2 months
—

Amount 
80
$
2,947
3,027 
—
$3,027

Pro forma information related to this acquisition is not presented, as the effect of this acquisition is 

not material. 

On January 31, 2003, the Company completed the sale of the assets and liabilities associated with the 

Aspen Metals products. These products were originally acquired by the Company in the December 2000 
acquisition of Broner Systems. The Company received an aggregate of £300,000 ($494,000 as of 
January 31, 2003), which was paid in four semi-annual installments from June 2003 to January 2005. 

(d) Purchase Price Allocation

Allocations of the purchase prices for all acquisitions were based on estimates of the fair value of the 

net assets acquired. The fair market value of significant intangible assets acquired was based on 
independent appraisals. In making each of these purchase price allocations, the Company considered 
present value calculations of income, an analysis of project accomplishments and remaining outstanding 
items and an assessment of overall contributions, as well as project risks. The values assigned to purchased 
in-process technology were determined by estimating the costs to develop the acquired technologies into 
commercially viable products, estimating the resulting net cash flows from the projects, and discounting the 
net cash flows to their present values. The revenue projections used to value the in-process research and
development were based on estimates of relevant market sizes and growth factors, expected trends in
technology, and the nature and expected timing of new product introductions by the Company and its 
competitors. The resulting net cash flows from the projects are based on estimates of cost of sales, 
operating expenses, and income taxes from the projects. The rates utilized to discount the net cash flows to 
their present value were based on estimated costs of capital calculations. Due to the nature of the forecasts 
and the risks associated with the projected growth and profitability of the developmental projects, discount 
rates of 20 to 40 percent were considered appropriate for the in-process research and development. Risks 
related to the completion of technology under development include the inherent difficulties and 
uncertainties in achieving technological feasibility, anticipated levels of market acceptance and 
penetration, market growth rates and risks related to the impact of potential changes in future target 
markets. 

(5) Line of Credit 

In January 2003, the Company executed a Loan Arrangement with Silicon Valley Bank. This 

arrangement provides a line of credit of up to the lesser of (i) $15.0 million or (ii) 70% of eligible domestic 
receivables, and a line of credit of up to the lesser of (i) $10.0 million or (ii) 80% of eligible foreign 
receivables. The lines of credit bear interest at the bank’s prime rate (6.00% at June 30, 2005) plus 0.5%.  

F-30

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(5) Line of Credit (Continued) 

The Company needs to maintain a $4.0 million compensating cash balance with the bank, or it is subject to 
an unused line fee and collateral handling fees. The lines of credit initially were collateralized by nearly all 
of the assets of the Company, and upon the Company’s achieving certain net income targets, the collateral 
would be reduced to a lien on the accounts receivable. The Company is required to meet certain financial
covenants, including minimum tangible net worth, minimum cash balances and an adjusted quick ratio. 

As of June 30, 2005, there were $8.5 million in letters of credit outstanding under the line of credit, 
and there was $9.7 million available for future borrowing. As of June 30, 2005, the Company was in default 
of the tangible net worth and adjusted quick ratio covenants. On September 13, 2005, the Company 
executed an amendment to the Loan Arrangement that adjusted the terms of certain financial covenants,
and cured the default as of June 30, 2005. The Loan Arrangement expires in July 2006. 

(6) Long-Term Obligations 

Long-term obligations consist of the following at June 30, 2004 and 2005 (in thousands):

51/4% Convertible subordinated debentures, mature on June 15, 2005 . . . . . . . . . . . . . .
Note payable to Soteica incurred in connection with salesforce acquisition, payable in 
quarterly installments of approximately $273 plus interest at 6% per year, through 
January 2006 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Note payable of a UK subsidiary due in monthly installments of approximately $50 

plus interest at 9% per year, through March 2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Capital lease obligations due in various monthly installments of principal plus 

interest, maturing through February 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mortgage payable of a UK subsidiary due in annual installments of approximately 

$100 plus interest at 6% per year . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Less—Current portion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2004
$56,745 

2005
$  —

1,819 

766 

406  

803

577

—

811 
60,547 
58,595 
$ 1,952  

—
1,380
1,042
$  338

Maturities of these long-term obligations are as follows (in thousands): 

Years Ending June 30, 
2006 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Amount
$1,042
198
140
$1,380

In June 1998, the Company sold $86.3 million of the Debentures to qualified institutional buyers.

During fiscal 2004, the Company used a portion of the proceeds from the Series D-1 and Series D-2
redeemable convertible preferred stock financing to repurchase and retire $29.5 million of the Debentures. 
In June 2005, the Company paid $58.2 million to retire all of the outstanding principal amount of the 
Debentures, together with interest accrued thereon.

F-31

 
 
 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(6) Long-Term Obligations (Continued) 

The Company recorded interest expense associated with these debentures of $5.1 million, $4.5 million

and $2.9 million in the years ended June 30, 2003, 2004 and 2005, respectively. 

(7) Preferred Stock 

The Company’s Board of Directors is authorized, subject to any limitations prescribed by law, without 

further stockholder approval, to issue, from time to time, up to an aggregate of 10,000,000 shares of 
preferred stock in one or more series. Each such series of preferred stock shall have such number of 
shares, designations, preferences, voting powers, qualifications and special or relative rights or privileges, 
which may include, among others, dividend rights, voting rights, redemption and sinking fund provisions,
liquidation preferences and conversion rights, as shall be determined by the Board of Directors in a 
resolution or resolutions providing for the issuance of such series. Any such series of preferred stock, if so
determined by the Board of Directors, may have full voting rights with the common stock or limited voting
rights and may be convertible into common stock or another security of the Company. 

Series B redeemable convertible preferred stock 

In February and March 2002, the Company sold 40,000 shares of Series B-I convertible preferred 

stock (Series B-I Preferred), and 20,000 shares of Series B-II convertible preferred stock (Series B-II
Preferred and, collectively with Series B-I Preferred, the Series B Preferred) together with (i) warrants to 
purchase 507,584 shares of common stock at an initial exercise price of $23.99 per share and (ii) warrants 
to purchase 283,460 shares of common stock at an initial exercise price of $20.64 per share, to three 
institutional investors for an aggregate purchase price of $60.0 million. The Company received 
approximately $56.6 million in net cash proceeds after closing costs. 

The Company allocated the net consideration received from the sale of the Series B Preferred 

between the Series B Preferred and the warrants on the basis of the relative fair values at the date of 
issuance, allocating $8.0 million to the warrants. The warrants are exercisable at any time prior to the fifth 
anniversary of their issue date. The fair value of the common shares into which the Series B Preferred was 
convertible on the date of issuance exceeded the proceeds allocated to the Series B Preferred by 
$3.2 million, resulting in a beneficial conversion feature that was recognized as an increase in additional 
paid-in-capital and as a discount to the Series B Preferred. This additional discount was immediately 
accreted through a charge to accumulated deficit in fiscal 2002. The remaining discount on the Series B 
Preferred was being accreted to its redemption value over the earliest period of redemption. 

The Series B Preferred accrued dividends at an annual rate of 4% that were payable quarterly, 
commencing June 30, 2002, in either cash or common stock, at the Company’s option (subject to the 
satisfaction of specified conditions). During fiscal 2003, the Company issued 731,380 shares of common 
stock in settlement of its dividend obligations through March 31, 2003. In July 2003, the Company issued 
120,740 shares of common stock in settlement of its dividend obligations for the three months ended 
June 30, 2003.

In June 2003, the Company amended the terms of the Series B Preferred in conjunction with the 

Series D-1 and Series D-2 redeemable convertible preferred stock financing. This amendment gave the 
holders of the Series B Preferred the right to redeem their Series B Preferred shares for cash in certain 
circumstances that were outside of the Company’s control. As a result of this redemption feature, the 
carrying value of the Series B Preferred was reclassified outside of stockholders’ equity on the  

F-32

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(7) Preferred Stock (Continued) 

accompanying consolidated balance sheet. In August 2003, the Company repurchased all of the 
outstanding shares of Series B Preferred. 

Series D redeemable convertible preferred stock 

In August 2003, the Company issued and sold 300,300 shares of Series D-1 redeemable convertible 
preferred stock (Series D-1 Preferred), along with warrants to purchase up to 6,006,006 shares of common 
stock at a price of $3.33 per share, in a private placement to several investment partnerships managed by 
Advent International Corporation for an aggregate purchase price of $100.0 million. Concurrently, the 
Company paid cash of $30.0 million and issued 63,064 shares of Series D-2 convertible preferred stock 
(Series D-2 Preferred), along with warrants to purchase up to 1,261,280 shares of common stock at a price 
of $3.33 per share, to repurchase all of the outstanding Series B Preferred. In addition, the Company 
exchanged existing warrants to purchase 791,044 shares of common stock at an exercise price ranging from 
$20.64 to $23.99 held by the holders of the Series B Preferred, for new warrants to purchase 791,044 shares 
of common stock at an exercise price of $4.08. These transactions are referred to collectively as the 
Series D Preferred financing. 

The Company incurred $10.7 million in costs related to the issuance of the Series D-1 and D-2 

Preferred (together, the Series D Preferred) and allocated the net proceeds received between the Series D 
Preferred and the warrants on the basis of the relative fair values at the date of issuance, allocating 
$15.5 million of proceeds to the warrants. The warrants are exercisable at any time prior to the seventh 
anniversary of their issue date. The remaining discount on the Series D Preferred is being accreted to its 
redemption value over the earliest period of redemption. 

The value of total consideration paid to the holders of the Series B Preferred, consisting of cash, 
Series D-2 Preferred and warrants, was less than the carrying value of the Series B Preferred at the time of 
retirement. This resulted in a gain of $6.5 million, which the Company recorded in the accretion of 
preferred stock discount and dividend line of the accompanying consolidated condensed statement of 
operations. 

Each share of Series D Preferred is entitled to vote on all matters in which holders of common stock 

are entitled to vote, receiving a number of votes equal to the number of shares of common stock into which
it is then convertible. In addition, holders of Series D-1 Preferred, as a separate class, are entitled to elect a 
certain number of directors, based on a formula as defined in the Series D Preferred Certificate of 
Designations. The holders of the Series D-1 Preferred are entitled to elect a number of the Company’s 
directors calculated as a ratio of the Series D-1 Preferred voting power as compared to the total voting
power of the Company’s common stock. The Series D-1 Preferred holders have elected three of the 
Company’s current directors. 

The Series D Preferred earns cumulative dividends at an annual rate of 8%, which are payable when
and if declared by the Board of Directors, in cash or, subject to certain conditions, common stock. As of 
June 30, 2005, the Company has accrued $19.4 million in dividends on the Series D Preferred. 

Each share of Series D Preferred is convertible at any time into a number of shares of common stock 

equal to its stated value divided by the then-effective conversion price. The stated value is currently 
$333.00 per share and is subject to adjustment in the event of any stock dividend, stock split, reverse stock 
split, recapitalization, or like occurrences. The current conversion price is $3.33 per share. As a result, each  

F-33

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(7) Preferred Stock (Continued) 

share of Series D Preferred currently is convertible into 100 shares of common stock, and in the aggregate, 
the Series D Preferred currently is convertible into 36,336,400 shares of common stock. The Series D 
Preferred have anti-dilution rights that will adjust the conversion ratio downwards in the event that the 
Company issues certain additional securities at a price per share less than the conversion price then in
effect. 

The Series D Preferred is subject to redemption at the option of the holders as follows: 50% on or 
after August 14, 2009 and 50% on or after August 14, 2010. The shares will be redeemed for cash at a price 
of $333.00 per share, plus accumulated but unpaid dividends. 

The Series D Preferred is subject to redemption at the option of the Company, at any time after 
August 2006 at a price of $416.25 per share plus any accumulated and unpaid dividends if, among other 
things, the average trading price of the Company’s common stock exceeds $7.60 per share for 45
consecutive days. If the Company makes such an election, the holders of the Series D Preferred may elect 
to convert their Series D Preferred shares into shares of common stock rather than have them redeemed. 

In the accompanying consolidated statements of operations, the accretion of preferred stock discount 

and dividend consist of the following (in thousands): 

Beneficial conversion feature related to issuance of Series B Preferred . .
Accrual of dividend on Series B Preferred . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accretion of discount on Series B Preferred . . . . . . . . . . . . . . . . . . . . . . . . .
Gain on retirement of Series B preferred, net of warrant modification 

charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Accrual of dividend on Series D preferred . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accretion of discount on Series D preferred . . . . . . . . . . . . . . . . . . . . . . . . .

2003 
$  — 
(2,400)
(6,784)

Years Ended June 30, 
2004
$  —  
(296) 
(643) 

2005
$  —
—
—

6,452 
—
— (8,690) 
— (3,181) 

—
(10,691)
(3,758)
$ (9,184 )  $ (6,358 )  $(14,449)

(8) Common Stock 

(a) Warrants 

In connection with the August 1997 acquisition of NeuralWare, Inc., the Company converted warrants 

to purchase NeuralWare common stock into warrants to purchase 10,980 shares of the Company’s 
common stock. Warrants to purchase 1,260 shares expired through June 30, 2005. All remaining warrants 
are currently exercisable with an exercise price of $120.98 per share. 

In connection with the February and March 2002 sales of Series B Preferred, the Company issued
warrants with five-year lives to purchase 791,044 shares of common stock at an exercise price ranging from 
$20.64 to $23.99 per share, as noted previously in Note 7. In August 2003, in conjunction with the Series D 
Preferred financing, these warrants were exchanged for new warrants to purchase 791,044 shares of 
common stock at an exercise price of $4.08 per share. As of June 30, 2005, none of these warrants had been 
exercised. 

F-34

 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(8) Common Stock (Continued) 

In connection with the May 2002 sale of common stock to private investors, the Company issued 
warrants to purchase up to 3,208,333 shares of common stock at a price of $13.20 per share. During fiscal 
2003 the second class of warrants to purchase up to 2,458,333 shares of common stock expired unexercised. 
In August 2003, the remaining warrants were canceled, and new warrants were issued to purchase
1,152,665 shares at an exercise price of $9.76 per share, due to the impact of the Series D Preferred 
financing on the warrants’ anti-dilution provisions. In January 2004, warrants to purchase 129,191 shares of 
common stock were exercised in a cashless exercise, resulting in the issuance of 17,922 shares of common 
stock. As of June 30, 2005, warrants to purchase 1,023,474 shares of common stock at an exercise price of 
$9.76 were exercisable. 

In connection with the August 2003 Series D Preferred financing, the Company issued warrants with
seven-year lives to purchase 7,267,286 shares of common stock at an exercise price of $3.33 per share. As 
of June 30, 2005, none of these warrants had been exercised. 

(b) Stock Options 

In May 2005, the shareholders approved the establishment of the 2005 Stock Incentive Plan (the 2005
Plan), which provides for the reservation of up to 4,000,000 shares of common stock for issuance under the 
2005 Plan. The 2005 Plan provides for the grant of incentive and nonqualified stock options and other 
stock-based awards, including the grant of shares based upon certain conditions, the grant of securities
convertible into common stock and the grant of stock appreciation rights. Restricted stock and other stock-
based awards granted under the 2005 Plan may not exceed, in the aggregate, 2,000,000 shares of common 
stock. As of June 30, 2005, there were 4,000,000 shares of common stock available for issuance subject to 
awards under the 2005 Plan. 

In December 2000, the shareholders approved the establishment of the 2001 Stock Option Plan (the 
2001 Plan), which provides for the issuance of incentive stock options and nonqualified options. Under the
2001 Plan the Board of Directors may grant stock options to purchase up to an aggregate of 4,000,000 
shares of common stock. At July 1, 2002, July 1, 2003 and July 1, 2004, the 2001 Plan was expanded to 
cover an additional 5% of the outstanding shares on the preceding June 30, rounded down to the neared 
number divisible by 10,000. In no event, however, may the number of shares subject to incentive options 
under the 2001 Option Plan exceed 8,000,000 unless the 2001 Plan is amended, and approved, by the 
shareholders. As of June 30, 2005, there were 469,207 shares of common stock available for grant under 
the 2001 Plan. 

In November 1995, the Board of Directors approved the establishment of the 1995 Stock Option Plan

(the 1995 Plan) and the 1995 Directors Stock Option Plan (the 1995 Directors Plan), which provided for 
the issuance of incentive stock options and nonqualified options. Under these plans, the Board of 
Directors may grant stock options to purchase up to an aggregate of 3,827,687 (as adjusted) shares of 
common stock. In December 1996, the shareholders of the Company approved the establishment of the 
1996 Special Stock Option Plan (the 1996 Plan). This plan provides for the issuance of incentive stock
options and nonqualified options to purchase up to 500,000 shares of common stock. The exercise price of 
options are granted at a price not less than 100% of the fair market value of the common stock on the date 
of grant. Stock options become exercisable over varying periods and expire no later than 10 years from the 
date of grant. As of June 30, 2005, there were 2,285,494 shares of common stock available for grant under  

F-35

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(8) Common Stock (Continued) 

the 1995 Plan, 406,579 shares available for grant under the 1995 Directors Plan, and 101,441 shares 
available for grant under the 1996 Plan. 

The following is a summary of stock option activity under all stock option plans in fiscal 2003, 2004

and 2005:

Outstanding, June 30, 2002 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options granted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options exercised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options terminated. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outstanding, June 30, 2003 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options granted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options exercised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options terminated. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outstanding, June 30, 2004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options granted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options exercised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options terminated. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outstanding, June 30, 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exercisable, June 30, 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Number of 
 Shares
6,991,245
3,158,555
(56,934)
(1,678,484)
8,414,382
6,278,204
(1,321,997)
(1,005,496)
12,365,093
4,076,825
(1,271,047)
(4,133,155)
11,037,716
7,094,332

Weighted
Average
Exercise
Price 
$15.29
2.88
2.56
11.26
11.35
3.04
3.12
16.55
7.52
6.18
2.84
7.49
$ 8.56
$10.37

F-36

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(8) Common Stock (Continued) 

The following tables summarize information about stock options outstanding and exercisable under 
the 1995 Plan, the 1995 Directors’ Plan, the 1996 Plan, the Petrolsoft Plan and the 2001 Plan at June 30, 
2005:

Range of Exercise Prices 
$2.21-$4.33 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.33-8.67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.67-13.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13.00-17.34 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17.34-21.67 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21.67-26.01 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26.01-30.34 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30.34-34.68 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34.68-39.01 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
39.01-43.34 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
June 30, 2005 . . . . . . . . . . . . . . . . . . . . . . . . . .
Exercisable, June 30, 2004 . . . . . . . . . . . . . . .
Exercisable, June 30, 2003 . . . . . . . . . . . . . . .

(c) Employee Stock Purchase Plans 

Options 
Outstanding 
at June 30, 
 2005
3,937,475
4,497,488
149,593
1,966,517
17,438
134,500
234,040
36,649
27,000
37,016
11,037,716

Weighted
Average 
Remaining
Contractual
Life
6.8
8.2
6.2
3.3
1.8
1.9
2.2
3.6
5.0
4.5
6.2

Weighted
Average  
Exercise 
 Price 
$ 2.81
6.46
10.05
14.23
20.64
24.00
28.98
31.23
38.29
40.04
$ 8.56

Options 
Exercisable 
at June 30, 
 2005
2,571,387
1,968,318
101,467
1,966,517
17,438
134,500
234,040
36,649
27,000
37,016
7,094,332
7,464,123
5,372,666

Weighted
Average
Exercise 
Price 
$ 2.82
6.83
10.50
14.23
20.64
24.00
28.98
31.23
38.29
40.04
$10.37
$10.48
$13.72

In October 1997, the Company’s Board of Directors approved the 1998 Employee Stock Purchase 
Plan, under which the Board of Directors may grant stock purchase rights for a maximum of 1,000,000 
shares through September 30, 2007. In December 2000 and 2003, the shareholders voted to increase the 
number of shares eligible under the 1998 Employee Stock Purchase Plan by 2,000,000 and 3,000,000 
shares, respectively. 

Participants are granted options to purchase shares of common stock on the last business day of each 
semi-annual payment period for 85% of the market price of the common stock on the first or last business 
day of such payment period, whichever is less. The purchase price for such shares is paid through payroll 
deductions, and the current maximum allowable payroll deduction is 10% of each eligible employee’s 
compensation. Under the plan, the Company issued 759,771 shares in 2003, 976,960 shares in 2004, and 
315,751 shares in 2005. As of June 30, 2005, there were 2,834,058 shares available for future issuance under 
the 1998 Employee Stock Purchase Plan as amended. In addition, on July 1, 2005, the Company issued 
100,600 shares under the 1998 Employee Stock Purchase Plan. 

(d) Stockholder Rights Plan 

During fiscal 1998, the Board of Directors of the Company adopted a Stockholder Rights Agreement 

(the Rights Plan) and distributed one Right for each outstanding share of Common Stock. The Rights 
were issued to holders of record of Common Stock outstanding on March 12, 1998. Each share of 
Common Stock issued after March 12, 1998 will also include one Right, subject to certain limitations. Each 
Right when it becomes exercisable will initially entitle the registered holder to purchase from the Company  

F-37

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(8) Common Stock (Continued) 

one one-hundredth (1/100th) of a share of Series A Preferred Stock at a price of $175.00 (the Purchase 
Price). 

The Rights will become exercisable and separately transferable when the Company learns that any 

person or group has acquired beneficial ownership of 15% or more of the outstanding Common Stock or 
on such other date as may be designated by the Board of Directors following the commencement of, or 
first public disclosure of an intent to commence, a tender or exchange offer for outstanding Common
Stock that could result in the offeror becoming the beneficial owner of 15% or more of the outstanding 
Common Stock. In such circumstances, holders of the Rights will be entitled to purchase, for the Purchase 
Price, a number of hundredths of a share of Series A Preferred Stock equivalent to the number of shares of 
Common Stock (or, in certain circumstances, other equity securities) having a market value of twice the 
Purchase Price. Beneficial holders of 15% or more of the outstanding Common Stock, however, would not 
be entitled to exercise their Rights in such circumstances. As a result, their voting and equity interests in
the Company would be substantially diluted if the Rights were to be exercised. 

The Rights expire in March 2008, but may be redeemed earlier by the Company at a price of $.01 per 

Right, in accordance with the provisions of the Rights Plan. 

The Company amended the Rights Plan in June 2003 so that the terms of the Rights Plan would not 
be applicable to the securities issued as part of the Series D preferred financing or to any securities issued 
in the future pursuant to the preemptive rights granted as part of this financing. 

(9) Income Taxes 

The Company accounts for income taxes under the provisions of SFAS No. 109, “Accounting for 

Income Taxes.” Under the liability method specified by SFAS No. 109, a deferred tax asset or liability is 
measured based on the difference between the financial statement and tax bases of assets and liabilities, as
measured by the enacted tax rates. 

Income (loss) before provision for (benefit from) income taxes consists of the following (in 

thousands): 

2003

Years Ended June 30, 
2004
$ (69,793) $(2,377)  $(65,374)
(222)
$ (137,624) $ (1,559)  $(65,596)

(67,831)

818 

2005

Domestic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Foreign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-38

 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(9) Income Taxes (Continued) 

The provisions for (benefit from) income taxes shown in the accompanying consolidated statements of 

operations are composed of the following (in thousands):

Federal— 
Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Deferred . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
State— 
Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Deferred . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Foreign—
Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Deferred . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Years Ended June 30, 
2004

2005

2003

$ — 
1,076 

$  —  
20,333 

$  —
45

— 
— 

748 
1,823 

784
—

— 
— 
$1,076  

13,934  
(16,942 ) 
$  19,896 

4,300
(1,352)
$  3,776

The provision for (benefit from) income taxes differs from that based on the federal statutory rate due 

to the following (in thousands): 

2005

2003

Years Ended June 30, 
2004
$(46,792) $ (530)  $(22,303)
547
1,697 
—
— 
1,671
(4,620) 
(1,397)
(1,193) 
(1,070) 
(819)
12,410
— 
13,667
25,612 
$ 3,776
$19,896 

—
17,129
7,236
(522)
48
—
23,977
$ 1,076

Federal tax at statutory rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
State income tax, net of federal tax benefit . . . . . . . . . . . . . . . . . . . . . . . . .
Tax effect resulting from foreign goodwill impairment . . . . . . . . . . . . . . .
Tax effect resulting from foreign activities . . . . . . . . . . . . . . . . . . . . . . . . . .
Tax credits generated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Permanent differences, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expiration of tax attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provision for income taxes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-39

 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(9) Income Taxes (Continued) 

The approximate tax effect of each type of temporary difference and carry forward is as follows (in 

thousands): 

Deferred tax assets: 
Revenue related . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Federal and state tax credits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Federal and state loss carryforwards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign loss carryforwards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restructuring accruals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other reserves and accruals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Property, plant and equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other temporary differences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Deferred tax liabilities:
Intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Property, plant and equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Net deferred tax assets (liabilities). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

June 30, 

2004

2005

$ 1,286 
18,768
23,405
6,583
22,771
10,455
9,526
—
1,704
94,498 
(90,944)
3,554 

$

456
14,023
42,288
7,150
21,004
13,552
5,838
2,089
256
106,657
(104,611)
2,046

(4,219)
(1,032)
(325)
(5,576 ) 
$ (2,022) $

(2,761)
—
—
(2,761)
(715)

As of June 30, 2005, the Company had net operating loss (NOL) carryforwards for U.S. federal and 

state income tax purposes of approximately $117 million and $62 million, respectively, and foreign net 
operating loss carryforwards of approximately $23 million. The Company had federal tax credits and state
tax credits of approximately $12 million and $2 million, respectively. The tax credits and NOL 
carryforwards expire at various dates from 2006 through 2025. The Company has determined that it 
underwent an ownership change (as defined under section 382 of the Internal Revenue Code of 1986, as 
amended) during the year ended June 30, 2004. As such, the recognition of the Company’s federal NOLs 
and tax credits may be limited. Moreover, an ownership change might have also occurred under the laws of
certain states and foreign countries in which the Company has generated NOLs and tax credits. 
Accordingly, it is possible that these NOL and tax credits could also be limited under rules similar to those 
of section 382. Due to the uncertainty surrounding the realization and timing of these tax attributes, the 
Company has recorded a valuation allowance of approximately $90.9 million and $104.6 million as of 
June 30, 2004 and 2005, respectively. 

F-40

 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(10) Operating Leases

The Company leases its facilities and various office equipment under noncancellable operating leases 

with terms in excess of one year. Rent expense charged to operations was approximately $13.9 million, 
$11.7 million and $9.3 million for the years ended June 30, 2003, 2004 and 2005, respectively. Future 
minimum lease payments under these leases as of June 30, 2005 are as follows (in thousands):

Years Ending June 30, 2006 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2009 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Thereafter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Amount
$10,910
9,467
7,777
7,589
7,123
21,262
$ 64,128

(11) Sale of Installments Receivable 

(a) Traditional Activities 

Installments receivable represent the present value of future payments related to the financing of 
noncancellable term and perpetual license agreements that provide for payment in installments, generally 
over a one- to five-year period. A portion of each installment agreement is recognized as interest income in
the accompanying consolidated statements of operations. The interest rates utilized for the years ended 
June 30, 2003, 2004, and 2005 ranged from 7.0% to 8.0%. 

The Company has arrangements to sell certain of its installments receivable to three financial 
institutions. The Company sold, with limited recourse, certain of its installment contracts for aggregate 
proceeds of $54.9 million and $97.6 million during fiscal 2004 and 2005, respectively. The financial 
institutions have certain recourse to the Company upon nonpayment by the customer under the
installments receivable. The amount of recourse is determined pursuant to the provisions of the 
Company’s contracts with the financial institutions. Collections of these receivables reduce the Company’s 
recourse obligations, as defined. Generally, no gain or loss is recognized on the sale of the receivables due 
to the consistency of the discount rates used by the Company and the financial institutions. 

At June 30, 2005, there was approximately $64 million of additional availability under the 

arrangements. The Company expects that there will be continued ability to sell installments receivable, as 
the collection of the sold receivables will reduce the outstanding balance and the availability under the 
arrangements can be increased. The Company’s potential recourse obligation related to these contracts is 
within the range of $0.7 million to $2.7 million. In addition, the Company is obligated to pay additional 
costs to the financial institutions in the event of default by the customer. 

(b) Securitization of Installments Receivable 

Initial Transaction 

On June 15, 2005, the Company securitized outstanding installment software license receivables 
totaling $71.2 million. Such securitization was structured in manner so that the securitization qualified as a 
sale. The Company received $43.8 million of cash and retained an interest in the sold receivables valued at  

F-41

 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(11) Sale of Installments Receivable (Continued) 

$16.6 million. It also retained certain limited recourse obligations relative to the receivables valued at 
approximately $0.9 million. Overall, the transaction (including $2.1 million in aggregate fees and expenses, 
including fees of the lenders’ agent and fees of the Company’s outside legal counsel and financial advisors) 
resulted in a loss of $13.9 million in the quarter ended June 30, 2005 and was recorded as a loss on sales 
and disposals of assets in the accompanying consolidated statement of operations. 

The amount of the loss was based on the previous carrying amount of the financial assets involved in 
the transfer, allocated between the assets sold and the retained interests based on their relative fair value 
at the date of transfer. 

As noted above, the retained interest in the sold receivables was recorded at its fair market value of 

$16.6 million at the time of the transaction and was initially and as of June 30, 2005 classified as a long-
term asset on the Company’s consolidated balance sheet. The Company estimates fair value based on the 
present value of future expected cash flows based on using management’s best estimates of key 
assumptions, principally credit losses, and discount rates commensurate with the risks involved. 

The Company retained the servicing rights relative to the receivables and receives annual servicing 

fees of $0.1 million per year. The benefits of servicing are just adequate to compensate the servicer for its 
responsibilities, and thus no servicing asset or liability has been recorded. 

In connection with the above transaction, the Company incurred an obligation to guaranty that the 

proceeds from all foreign denominated installments receivable included in the securitized pool will be 
equal to the U.S. dollar value on the initial contract date. The fair value of this obligation, as of the 
transaction date and as of June 30, 2005, was not material and has thus been accorded no value. 

Ongoing Retained Interests 

Key economic assumptions used in subsequently measuring the carrying value of the Company’s 

retained interests in the software license receivables at June 30, 2005 and the effect on the fair value of 
those interests from adverse changes in those assumptions are as follows (dollars in thousands): 

Balance sheet carrying value of retained interest in sold receivables 

Expected credit losses (annual rate): 

Impact on fair value of 10% adverse change
Impact on fair value of 20% adverse change

Residual cash flow discount rate (annual rate): 
Impact on fair value of 10% adverse change
Impact on fair value of 20% adverse change

$ 16,667 

$ 
$ 

0.82%
(48)
(96)

16.0%

$  (923)
$ (1,790)

These sensitivities are hypothetical and presented for illustrative purposes only. Changes in fair value 
based on a 10% variation in assumptions generally cannot be extrapolated because the relationship of the 
change in assumption to the change in fair value may not be linear. Also, the effect of a variation in a 
particular assumption is calculated without changing any other assumption; in reality, changes in one 
assumption may result in changes in another, which may magnify or counteract the sensitivities. Further,
this analysis does not assume any impact resulting from management’s intervention to mitigate these 
variations. 

F-42

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(12) Commitments and Contingencies 

(a) FTC Settlement 

On December 21, 2004, the FTC approved the Company’s proposed consent decree, which

constituted a complete and final settlement of the FTC’s complaint against the Company relating to its 
acquisition of Hyprotech in May 2002. The FTC’s approval also constituted approval of the transactions
contemplated by the purchase and sale agreement that the Company and its subsidiaries Hyprotech 
Company, AspenTech Canada Ltd., AspenTech Ltd. and Hyprotech UK Ltd. entered into on October 6,
2004 with Honeywell International, Inc. and its subsidiaries Honeywell Control Systems Limited and 
Honeywell Limited-Honeywell Limitee. The Company previously completed the sale of its AXSYS 
product line to Bentley Systems Incorporated on July 21, 2004, as set forth in the FTC consent decree. The 
Company recorded a $0.3 million gain related to this sale. 

On December 23, 2004, the Company and its subsidiaries completed the transactions with Honeywell 

contemplated by the October 6, 2004 purchase agreement, which relates to the sale of the Company’s 
operator training business and ownership of rights to the intellectual property to the Hyprotech
engineering products to Honeywell International. Under the terms of the transactions: 

• the Company retains a perpetual, worldwide, royalty-free license to the entire Hyprotech

engineering software product line and has the right to continue to develop and sell the Hyprotech
engineering products, other than AXSYS which was sold to Bentley Systems;

• the Company retains its customer licenses for HYSYS and related products; 

• the Company retains all rights in its Aspen RefSYS and Aspen Oil & Gas solutions; 

• the Company agreed to a cash payment of approximately $6.0 million from Honeywell in

consideration of the transfer of the Company’s operator training services business, the Company’s 
covenant not-to-compete in the operator training business for three years, and the transfer of 
ownership of the intellectual property of the Company’s Hyprotech engineering products, $1.2 
million of which is subject to holdback and may be released, less any adjustments for uncollected
billed accounts receivable and unbilled accounts receivable; 

• the Company transferred and Honeywell assumed, as of the closing date, approximately $4 million 

in accounts receivable relating to the operator training business; and 

• the Company entered into a two-year support agreement with Honeywell under which the Company 
agrees to provide Honeywell with source code to new releases of the Hyprotech products provided 
to customers under standard software maintenance services agreements. 

The Honeywell transaction resulted in a deferred gain of $0.2 million, which is subject to a potential 
increase of $1.2 million upon resolution of the holdback payment and will be amortized over the two-year 
life of the support agreement. 

(b) KBC Settlement 

On October 1, 2004, the Company, together with its subsidiaries AspenTech, Inc. and Hyprotech 
Company, entered into a Settlement Agreement with KBC Advanced Technologies Plc, KBC Advanced 
Technologies Inc. and AEA Technology Plc. Pursuant to the settlement agreement, the parties agreed to 
settle (1) the arbitration proceedings in England relating to a contract dispute involving the parties and  

F-43

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(12) Commitments and Contingencies (Continued) 

(2) the legal proceedings filed by KBC in state district court in Houston, Texas against the Company and 
Hyprotech Company. 

As part of the settlement, KBC recognized the Company’s right to develop, market and license Aspen 
RefSYS, and the Company recognized KBC’s right to develop, market and license HYSYS.Refinery, their 
respective refinery-wide simulation products. The Company licensed commercial, object code, copies of 
Aspen HYSYS, Aspen PIMS, and Aspen Orion to KBC for use as part of KBC’s consulting services 
business, without the right to sublicense. In addition, the Company paid KBC $3.75 million in lieu of costs 
incurred in the dispute. 

(c) Litigation 

U.S. Attorney’s Office Investigation 

On October 29, 2004, the Company announced that it had received a subpoena from the U.S. 

Attorney’s Office for the Southern District of New York requesting documents relating to transactions to 
which the Company was a party during the 2000 to 2002 time frame, associated documents dating from 
January 1, 1999, and additional materials. The Company has cooperated fully with the subpoena requests 
and in the investigation by the U.S. Attorney’s Office. 

Class Action Suits 

In November 2004, two putative class action lawsuits were filed against the Company in the United 

States District Court District of Massachusetts, captioned, respectively, Fener v. Aspen Technology, Inc., 
et. al., Civil Action No. 04-12375 (D. Mass.) (filed Nov. 9, 2004) and Stockmaster v. Aspen
Technology, Inc., et. al., Civil Action No. 04-12387 (D. Mass.) (filed Nov. 10, 2004) (the “Class Actions”). 
The Class Actions allege, among other things, that the Company violated Section 10(b) of the Exchange 
Act and Rule 10b-5 promulgated thereunder in connection with various statements about its financial 
condition for fiscal years 2000 through 2004. On February 2, 2005, the Court consolidated the cases under 
the caption Aspen Technology, Inc. Securities Litigation, Civil Action No. 04-12375 (D. Mass.), and 
appointed The Operating Engineers and Construction Industry and Miscellaneous Pension Fund (Local
66) and City of Roseville Employees’ Retirement System as lead plaintiff, purporting to represent a 
putative class of persons who purchased Aspen Technology, Inc. common stock between January 25, 2000
and October 29, 2004. On August 26, 2005, the plaintiffs filed a consolidated amended complaint 
containing allegations materially similar to the prior complaints and expanding the class action period to 
December 7, 1999 through March 15, 2005. The defendants have sixty days from the filing of the
consolidated amended complaint to move, answer or otherwise respond to the complaint. The Company 
believes that plaintiffs’ claims lack merit and intends to litigate the dispute vigorously. The Company is 
currently unable to determine whether resolution of these matters will have a material adverse impact on 
its financial position or results of operations, or reasonably estimate the amount of the loss, if any, that 
may result from resolution of these matters. However, the ultimate outcome could have a material adverse 
effect on the Company’s financial position or results of operations. 

Derivative Action 

On December 1, 2004, a purported derivative action was filed in the United States District Court of 

Massachusetts, captioned Caviness v. Evans, et. al., Civil Action No. 04-12524 (D. Mass.) (the “Derivative  

F-44

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(12) Commitments and Contingencies (Continued) 

Action”). The complaint, as subsequently amended, alleges, among other things, that the former and 
current director and officer defendants caused the Company to issue false and misleading financial 
statements, and brings derivative claims for the following:  (1) breach of fiduciary duty for insider trading; 
(2) breach of fiduciary duty; (3) abuse of control; (4) gross mismanagement; (5) waste of corporate assets;
(6) unjust enrichment. The Company moved to dismiss the complaint pursuant to Fed. R. Civ. P. 23.1 for
failure to make a demand on the board of directors of the Company and for failing to allege particularized 
facts showing why plaintiff’s failure to make a demand should be excused. On August 18, 2005, the Court 
granted the Company’s motion and dismissed the case with prejudice. 

On April 12, 2005, the Company received a letter dated March 22, 2005 alleging that the officers and 

directors of AspenTech failed to disclose and misrepresented that the Company inappropriately 
recognized revenues in the 2000-2002 fiscal years, and that the Company should commence suit for relief 
equivalent to that sought in the Derivative Action, including requiring certain present and former officers 
of the Company to return remuneration paid to them while in breach of their fiduciary duties to the 
Company. The Company is currently unable to determine whether resolution of this matter will have a 
material adverse impact on its financial position or results of operations, or reasonably estimate the 
amount of the loss, if any, that may result from resolution of this matter. However, the ultimate outcome 
could have a material adverse effect on the Company’s financial position or results of operations. 

(d) Other 

The Company has entered into an employment agreement with its president and chief executive 
officer providing for the payment of cash and other benefits in certain situations involving his voluntary or 
involuntary termination, including following a change in control. Payment under this agreement would 
consist of a lump sum equal to approximately two times (1) his annual base salary plus (2) the average of 
his annual bonus for the three preceding fiscal years. The agreement also provides that the payments 
would be increased in the event that it would subject him to excise tax as a parachute payment under the 
Internal Revenue Code. The increase would be equal to the additional tax liability imposed on him as a 
result of the payment. 

The Company has entered into agreements with two other executive officers, providing for severance 

payments in the event that such an executive is terminated by the Company other than for cause. Payments 
under these agreements consist of continuation of base salary for a period of 12 months. The Company has 
also entered into an agreement with its former chairman and founder pursuant to which, in the event of a 
change in control, all amounts due to him for the remainder of the term of his agreement become
immediately due and payable. 

(13) Retirement and Profit Sharing Plans

The Company maintains a defined contribution retirement plan under Section 401(k) of the Internal

Revenue Code covering all eligible employees, as defined. Under the plan, a participant may elect to defer 
receipt of a stated percentage of his or her compensation, subject to limitation under the Internal Revenue 
Code, which would otherwise be payable to the participant for any plan year. The Company may make 
discretionary contributions to this plan, including making matching contributions equal to 25% of pretax 
employee contributions up to a maximum of 6% of an employee’s salary. During the fiscal years ended  

F-45

ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(13) Retirement and Profit Sharing Plans (Continued) 

June 30, 2003, 2004 and 2005, the Company made matching contributions of approximately $0.1 million,
$1.0 million and $1.0 million, respectively. These contributions were immediately vested. 

(14) Joint Ventures and Other Investments 

In May 1993, the Company entered into an Equity Joint Venture agreement with China 

Petrochemical Technology Company to form a limited liability company governed by the laws of the 
People’s Republic of China. This joint venture has the nonexclusive right to distribute the Company’s 
products within the People’s Republic of China. The Company invested $0.3 million on August 6, 1993, 
which represented a 25% equity interest in the joint venture. The joint venture was dissolved during fiscal 
2005. 

In November 1993, the Company invested approximately $0.1 million in a Cyprus-based company, 
representing approximately a 14% equity interest. In December 1995, the Company exercised its option to 
increase its equity interest to 22.5%, acquiring additional shares for approximately $0.1 million. In fiscal 
2001, a third party invested in the entity and purchased a portion of the existing shareholders’ equity 
interests. As a result of this transaction, the Company’s equity interest increased to 31.58%. In
December 2004, the Company surrendered its share in the company as part of a contract restructuring, 
resulting in a loss of $0.1 million which was recorded in general and administrative expenses. 

In the accompanying consolidated statements of operations for the years ended June 30, 2003 and 
2004, the Company has recognized losses of approximately $0.5 million and $0.4 million, respectively, as its 
portion of the losses from these joint ventures. 

In November 2000, the Company invested $0.6 million in a global chemical business-to-business e-
commerce company supporting major chemical companies in Asia. This investment entitles the Company 
to a minority interest in this company and is accounted for using the cost method and, accordingly, is being 
valued at cost unless a permanent impairment in its value occurs or the investment is liquidated. As of 
June 30, 2005, the Company has determined that an other than temporary impairment has not occurred. 
This investment is included in other assets in the accompanying consolidated balance sheet as of June 30, 
2004. 

(15) Accrued Expenses and Other Liabilities 

Accrued expenses in the accompanying consolidated balance sheets consist of the following (in 

thousands): 

Royalties and outside commissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquisition and legal-related . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Payroll and payroll-related . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restructuring accruals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Payable to financing companies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Income and other taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

June 30, 

2004
$14,512
7,333
14,191
16,612
1,333
7,801
13,644 
$ 75,426 

2005
$12,486
1,643
12,389
8,833
16,187
12,038
15,745
$ 79,321

F-46

 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(15) Accrued Expenses and Other Liabilities (Continued) 

Other liabilities in the accompanying consolidated balance sheets consist of the following

(in thousands): 

Restructuring accruals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Deferred rent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Royalties and outside commissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

June 30, 

2004
$ 6,122 
3,913 
1,492
$ 11,527 

2005
$15,197
5,255
2,691
$ 23,143

(16) Related Party Transactions

During the year ended June 30, 2003, the Company recorded license revenue of $2.8 million

associated with sales to Accenture. During this period, Accenture owned approximately 1.6 million shares
of the Company’s common stock. 

A director of the Company provided advisory services to the Company as a director of PetroVantage 
during fiscal 2003. Separately, during fiscal 2003, the director provided general consulting services to the 
Company, for which the Company made payments totaling approximately $230,000 during the fiscal year. 

(17) Segment and Geographic Information 

The Company follows the provisions of SFAS No. 131, “Disclosures about Segments of an Enterprise 
and related Information,” which establishes standards for reporting information about operating segments 
in annual financial statements and requires selected information about operating segments in interim 
financial reports issued to stockholders. It also established standards for disclosures about products and 
services, and geographic areas. Operating segments are defined as components of an enterprise about 
which separate financial information is available that is evaluated regularly by the chief operating decision
maker, or decision making group, in deciding how to allocate resources and in assessing performance. The 
Company’s chief operating decision maker is the Chief Executive Officer of the Company. 

The Company is organized geographically and by line of business. The Company has three major line
of business operating segments: license, consulting services and maintenance and training. The Company
also evaluates certain subsets of business segments by vertical industries as well as by product categories. 
While the Executive Management Committee evaluates results in a number of different ways, the line of 
business management structure is the primary basis for which it assesses financial performance and 
allocates resources. 

The license line of business is engaged in the development and licensing of software. The consulting
services line of business offers implementation, advanced process control, real-time optimization and other 
consulting services in order to provide its customers with complete solutions. The maintenance and 
training line of business provides customers with a wide range of support services that include on-site 
support, telephone support, software updates and various forms of training on how to use the Company’s 
products. 

The accounting policies of the line of business operating segments are the same as those described in 

the summary of significant accounting policies. The Company does not track assets or capital expenditures  

F-47

 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(17) Segment and Geographic Information (Continued)

by operating segments. Consequently, it is not practical to show assets, capital expenditures, depreciation 
or amortization by operating segments. 

The following table presents a summary of operating segments (in thousands):

Year ended June 30, 2003— 
Revenues from external customers . . . . . . . . . . . . . . . . .
Controllable expenses. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controllable margin(1) . . . . . . . . . . . . . . . . . . . . . . . . . . .
Year ended June 30, 2004— 
Revenues from external customers . . . . . . . . . . . . . . . . .
Controllable expenses. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controllable margin(1) . . . . . . . . . . . . . . . . . . . . . . . . . . .
Year ended June 30, 2005— 
Revenues from external customers . . . . . . . . . . . . . . . . .
Controllable expenses. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controllable margin(1) . . . . . . . . . . . . . . . . . . . . . . . . . . .

License

Consulting
 Services 

Maintenance
and Training 

Total 

$ 162,354
65,394
$ 96,960

$158,661
64,963
$ 93,698

$129,233
63,077
$ 66,156

$ 103,741
81,943
$ 21,798

$ 96,512
67,214
$ 29,298

$ 65,248
53,729
$ 11,519

 $80,361
12,361
$68,000

$77,823
14,323
$63,500

$75,086
16,299
$58,787

$ 346,456
159,698
$186,758

$332,996
146,500
$186,496

$269,567
133,105
$136,462

(1) The Controllable Margins reported reflect only the expenses of the line of business and do not 

represent the actual margins for each operating segment since they do not contain an allocation for 
selling and marketing, general and administrative, development and other corporate expenses 
incurred in support of the line of business. 

Profit Reconciliation: 

2003

Years Ended June 30 
2004 
(In thousands) 
$186,496
(89,129)
(78,111)
(4,217)
(20,085)
879
2,608

$ 186,758
(91,353)
(78,618)
(114,247)
(41,080)
52
864

2005

$136,462
(80,261)
(85,846)
—
(24,907)
(13,635)
2,591

$(137,624) $ (1,559) $ (65,596)

Total controllable margin for reportable segments. . . . . . . . . . . . . . . .
Selling and marketing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General and administrative and overhead . . . . . . . . . . . . . . . . . . . . . . .
Asset impairment charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restructuring charges and FTC legal costs. . . . . . . . . . . . . . . . . . . . . . .
Gain (loss) on sales and disposals of assets . . . . . . . . . . . . . . . . . . . . . .
Interest and other income and expense. . . . . . . . . . . . . . . . . . . . . . . . . .
Income (loss) before (provision for) benefit from income taxes and 
equity in earnings from joint ventures . . . . . . . . . . . . . . . . . . . . . . . . .

F-48

 
 
 
 
ASPEN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

(17) Segment and Geographic Information (Continued)

Geographic Information:

Domestic and export sales as a percentage of total revenues are as follows:

United States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Europe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2005

Years Ended June 30, 
2004 

2003 
46.6 % 42.8 % 39.7%
33.0 
30.2 
4.6 
3.9 
19.3 
19.6 
100.0 %  100.0 % 100.0%

37.2
5.8
17.3

During the years ended June 30, 2003, 2004 and 2005 there were no customers that individually 

represented greater than 10% of the Company’s total revenue. 

Revenues, income (loss) from operations and identifiable assets for the Company’s North American, 
European and Asian operations are as follows (in thousands). The Company has intercompany distribution
arrangements with its subsidiaries. The basis for these arrangements, disclosed below as transfers between
geographic locations, is cost plus a specified percentage for services and a commission rate for sales 
generated in the geographic region. 

Year ended June 30, 2003— 
Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifiable assets . . . . . . . . . . . . . . . . . . . . .
Year ended June 30, 2004— 
Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifiable assets . . . . . . . . . . . . . . . . . . . . .
Year ended June 30, 2005— 
Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifiable assets . . . . . . . . . . . . . . . . . . . . .

North 
America 

Europe

Asia 

Eliminations 

Consolidated

$259,108 
$524,090 

$106,725 
$ 64,917 

$12,876 
$ (6,959)

$  (32,253) 
$(266,789)

 $ 346,456
$315,259

$240,830 
$604,560 

$ 83,427 
$ 32,786 

$16,825 
$ (4,229)

$ 
(8,086) 
$(331,713)

 $ 332,996
$301,404

$180,038 
$585,086 

$ 75,035 
7,689 
$

$17,916 
$ (4,577)

$ 
(3,422) 
$(388,220)

 $ 269,567
$199,978

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Officers, Board of Directors and Corporate Information

Executive Officers

Corporate Offices

Corporate Information

Mark E. Fusco
President and Chief Executive Officer

Frederic G. Hammond
Senior Vice President and General Counsel

Aspen Technology, Inc.
Headquarters
10 Canal Park
Cambridge, Massachusetts 02141 USA
1.617.949.1000

Questions regarding taxpayer identification numbers,
transfer procedures, and other stock account 
matters should be addressed to the Transfer Agent 
& Registrar at:

Charles F. Kane
Senior Vice President, Finance 
and Chief Financial Officer

Manolis Kotzabasakis
Senior Vice President, Sales  
and Business Development

C. Steven Pringle
Senior Vice President, Global 
Consulting Services

Blair Wheeler
Senior Vice President, Marketing

Board of Directors

Stephen M. Jennings, Chairman
Director, Monitor Group

Donald P. Casey
Chairman
Mazu Networks, Inc.

Aspen Technology, Inc.
Houston, Texas USA
1.281.584.1000

Aspen Technology, Inc.
New Providence, New Jersey USA
1.908.516.9500

Aspen Technology, Inc.
Gaithersburg, Maryland USA
1.301.944.2500

Aspen Technology, Inc.
Calgary, Alberta, Canada
1.403.303.1000

AspenTech Europe SA/NV
La Hulpe, Belgium
32.(0)2.701.94.50

AspenTech Ltd.
Cambridge, UK
44.(0)1223.819700

Mark E. Fusco
President and Chief Executive Officer 
Aspen Technology, Inc.

Aspen Technology España, S.A.
Barcelona, Spain
34.93.5569400

Gary E. Haroian
Consultant

Douglas A. Kingsley
Managing Director, Advent International

Joan C. McArdle
Senior Vice President 
Massachusetts Capital Resource Company

Michael Pehl
Partner, Advent International

AspenTech (Beijing) Ltd.
Beijing, PR China
86.10.84538600

AspenTech Japan Co., Ltd.
Tokyo 102-0083 Japan
81.(0)3.3262.1710

Independent Public Accountants

Deloitte & Touche LLP
200 Berkeley Street
Boston, Massachusetts 02116 USA

Legal Counsel

Wilmer Cutler Pickering Hale and Dorr LLP
60 State Street
Boston, Massachusetts 02109 USA

American Stock Transfer & Trust Co.
6201  15th Avenue
Brooklyn, New York 11219 USA
1.800.937.5449
www.amstock.com
info@amstock.com

The Annual Meeting of Shareholders will be held on
December 1, 2005, at 10:00 a.m. at the offices of:

Wilmer Cutler Pickering Hale and Dorr LLP
60 State Street
Boston, Massachusetts 02109 USA

Shareholders may obtain a copy of the Company’s
Annual Report on Form 10K, for the fiscal year ended
June 30, 2005, filed with the Securities and Exchange
Commission, by sending a written request to:

Investor Relations
Aspen Technology, Inc.
10 Canal Park
Cambridge, Massachusetts 02141-2201 USA
1.888.996.7080
1.617.949.1624

Projections, estimates, and business plans in this 
publication are forward-looking statements that involve
risks and uncertainties. Actual future market growth,
capital expenditures, costs, earnings, events, financial
performance, and plans could differ materially due to,
for example, changes in market conditions, the outcome
of commercial negotiations, changes in operating
conditions and costs, technology developments, 
and other factors discussed in this document and in
Item 1 of the Company’s Form 10K for the year ended
June 30, 2005. 

AspenTech, aspenONE, and the aspen leaf are 
trademarks or registered trademarks of 
Aspen Technology, Inc., Cambridge, Massachusetts USA.

Copyright © 2005
Aspen Technology, Inc.
All rights reserved.

Since  AspenTech  was  founded  in  1981,  we  have  focused  on  delivering  substantial  and

measurable value to our customers by helping them to model, optimize and control their

operations. Our large and loyal customer base has captured hundreds of millions of dollars

of value by using AspenTech solutions. With a rigorous R&D process, an award-winning

customer  support  staff  and  a  global  professional  services  organization,  AspenTech  is

committed to ensuring that our customers maximize their potential.

Headquarters
Aspen Technology, Inc.
10 Canal Park
Cambridge, Massachusetts 02141
USA

Phone: 617.949.1000
Fax: 617.949.1030
www.aspentech.com
info@aspentech.com

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Driving Process Profitability