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Cabot Microelectronics Corporation

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FY2009 Annual Report · Cabot Microelectronics Corporation
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2 0 0 9   A N N UA L  R EP O R T

Successful Execution in a 
Challenging Economy

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Financial Highlights: 

In millions, except per share and percentage amounts

Revenue

Gross profit margin, as a percent

Operating income

Net income

Diluted earnings per share

Total assets

Stockholders’ equity

Cash and short-term investments

Cash provided by operations

After tax return on invested capital, as a percent

FY09

FY08

Change

$291.4

$375.1

(22.3)%

44.1

16.0

11.2

0.48

515.1

470.7

200.0

44.7

4.0

46.5

49.4

38.3

1.64

477.4

434.2

226.4

70.8

15.3

(5.2)

(67.6)

(70.8)

(70.7)

7.9

8.4

(11.7)

(36.9)

(73.9)

Business Driver:

As a primarily consumables-based business, our revenue is driven by wafer-starts.

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Cabot Microelectronics Quarterly Revenue

(1) Based on 8” equivalent IC wafer-starts, as reported by Semiconductor International Capacity Statistics

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Cabot Microelectronics is the world’s leading supplier 

of chemical mechanical planarization (CMP) slurries and 

a growing CMP pad supplier to the semiconductor 

industry. Our CMP consumables products are used to 

level, smooth and remove excess material from the 

multiple layers of material that are deposited upon 

silicon wafers in the production of most semiconductor 

devices. This enables our customers to manufacture 

smaller, faster and more complex devices. We also 

produce slurries for the data storage industry that are 

used to polish certain hard disk drive components, and 

we are pursuing a number of other demanding surface 

modification applications through our engineered 

surface finishes business.

Our company…

While we were adversely impacted by the severe 

economic recession in fiscal 2009, we continued to 

successfully execute on our strategic initiatives, and 

maintained and even enhanced our customer facing 

activities. Notwithstanding the challenging environ-

ment, we increased revenue from our CMP pad 

business by 17 percent, completed our successful 

acquisition and initial integration of Epoch Material Co., 

Ltd., introduced next generation products in all major 

application areas and achieved over $12 million in 

operating expense savings compared to fiscal 2008.

1

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(Left) 
William P. Noglows, 
Chairman, President & CEO

(Right) 
William S. Johnson, 
Vice President & CFO      

To Our Stockholders, Customers, Suppliers and Employees:

Despite the challenging economic and industry envi-
ronments in fiscal 2009, we ended the year with opti-
mism and excitement for the future growth of Cabot 
Microelectronics. We are pleased that our flexible 
business model, solid balance sheet and experi-
enced management team enabled us to successfully 
execute on our strategies and key initiatives during 
the worst economic downturn in generations, and we 
believe we will emerge from this recession with an 
even stronger competitive position. While there are 
still mixed economic signals, a number of industry 
analysts are predicting double-digit semiconductor 
revenue growth for calendar 2010, which bodes well 
for our business. 

In addition, we have promising growth oppor-
tunities within our CMP pads business, as well 
as with our new CMP slurry products. 

Further, we are capturing significant synergies asso-
ciated with our Epoch acquisition, and we continue 
to pursue our vision to be the trusted industry part-
ner of our customers.

During fiscal 2009 we continued to execute on our 
primary strategy of strengthening and growing 
our core CMP consumables business. Within this 
strategy, we are focused on our key initiatives of 
Technology Leadership, Operations Excellence and 
Connecting with Customers. Through the execution 
of this primary strategy and related key initiatives, 
we made significant progress across many areas of 
our business during fiscal 2009, which I would now 
like to highlight.

First, we successfully completed our acquisition of 
Epoch Material Co., Ltd., a Taiwan-based copper 
CMP slurry supplier, in February 2009. 

In addition to expanding our physical presence 
in the world’s largest CMP consumables market, 
we believe this strategic acquisition enhances 
our ability to serve our customers, develop 
leading edge copper CMP products and lever-
age our global supply chain infrastructure. 

Since this acquisition falls right within our core busi-
ness, synergies are plentiful; we have already achieved 
significant savings and we are finding more as we 
proceed with the integration. During fiscal 2009, Epoch 
positively impacted our gross profit margin and earn-
ings per share, despite the global recession and 
expenses associated with purchase accounting rules.

Second, notwithstanding the severe downturn, we 
increased revenue from our CMP pad business by 
17 percent in fiscal 2009. 

By expanding our product portfolio from CMP 
slurries into this important adjacent area, we 
effectively increased our total addressable 
market by over 70 percent. 

In recognition of our unique pad technology, which 
is designed for extended pad life and low defectivity 
of semiconductor wafers, we received an “Editors’ 
Choice Best Products” award from Semiconductor 
International Magazine this year and a supplier 
award from Taiwan Semiconductor Manufacturing 

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Mission: To create value by developing reliable and innovative solutions, through close 

customer collaboration, that solve today’s challenges and help enable tomorrow’s 

technology.

Vision: The trusted industry partner, providing high quality solutions with speed, and 

delivering superior cost of ownership.  

Company (TSMC). In addition, through our opera-
tions excellence efforts, we positively impacted our 
profitability by continuing to improve our pad manu-
facturing yields every quarter since we began high 
volume manufacturing. Also contributing to our 
success in pads was our installation of on-site pad 
finishing capability at TSMC, which exemplifies our 
close customer relationships.

Third, during fiscal 2009, we also introduced next 
generation products across all major application 
areas. In particular, we are excited about our new 
barrier polishing slurry which is being evaluated by 
over 20 customers, as well as our new copper polish-
ing slurry that is designed for low cost, high through-
put and tunability. We also recently commercialized 
our first aluminum CMP slurry, which is being utilized 
in emerging high-k metal gate applications. Addi-
tionally, we have developed a next generation pad 
platform that is currently in alpha sampling with 
select, strategic customers. 

We have a full and productive new product 
pipeline, which is driving a higher and higher 
portion of our total sales.

In addition to our primary strategy to strengthen and 
grow our core CMP consumables business, our sec-
ondary strategy is to advance our engineered sur-
face finishes business (ESF). Under this strategy, we 
continue to work on cultivating our two ESF acquisi-
tions, QED Technologies and Surface Finishes, as well 
as supplementing these efforts with our own organic 
development in a few focused areas, including 
optics, electronic substrates and solar applications.

Looking forward to fiscal 2010, we intend to 
continue to pursue potential acquisitions that 
we believe will exhibit a high degree of strate-
gic fit with our company, and we are focusing 
on opportunities that would allow us to lever-
age our world-class supply chain management, 
quality systems and global infrastructure. 

In pursuing these potential opportunities, we hope 
to bring more products to our existing customer 
base, such as we have accomplished with Epoch, and 
drive sustainable long-term growth for our company.

Also during fiscal 2010, we plan to continue to grow 
our CMP pad business and increase sales of our 
other new products, while continuing to collaborate 
with our customers to develop next generation prod-
ucts and maintain our full product pipeline. In addi-
tion, we aim to continue to prudently manage our 
costs, drive productivity improvements and capital-
ize on Epoch acquisition synergies.

I would like to thank our stockholders, customers, 
suppliers and employees for your support and con-
tinued confidence in our company. We are optimistic 
and encouraged about the road ahead. Our product 
line is robust, we have a talented team of dedicated 
and experienced employees, and we believe we 
have the financial strength to take advantage of 
potential opportunities as they arise.

Sincerely,

WILLIAM P. NOGLOWS

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Cabot Microelectronics Corporation 2009 Annual Report

At Cabot Microelectronics, our employees’ experience 

and commitment are key elements of our success. 

We have a highly capable global team of employees 

who have a deep understanding of our technology, our 

business, and our customers. Therefore, when we began 

to experience the impact of the global recession, we 

chose to preserve our valued intellectual capital. Our 

strategy was to bridge to a recovery, so rather than 

make dramatic staff reductions, we opted for reducing 

work schedules globally and implementing other cost 

reduction initiatives such as temporarily suspending 

certain employee benefits, as well as restricting hiring 

and limiting travel that was not customer facing. Using 

this flexible approach and responding quickly to 

changing conditions, we were able to minimize the 

impact of the severe downturn without sacrificing our 

operations, quality or development activity. This 

approach also allowed us to respond to an unprece-

dented rebound in demand during the second half of 

our fiscal year, reinforcing the benefit of this strategy.

Our people…

We recognize that this has been a challenging year not 

only for the company, but also for our employees. We 

greatly appreciate their continued commitment to our 

company and the successful execution of our strategies, 

even as we have asked them to do more with less. 

During this period of limited resources, our employees 

have demonstrated their resourcefulness and have come 

together as a global team to solve challenges and 

share collective insights. As a result, we believe we are 

well positioned to emerge from this recession a more 

streamlined, collaborative and focused organization.

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Form 10-K

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UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
WASHINGTON, D.C. 20549 
FORM 10-K 

(cid:95)(cid:95)(cid:95)(cid:95) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) 
OF THE SECURITIES EXCHANGE ACT OF 1934 

FOR THE FISCAL YEAR ENDED SEPTEMBER 30, 2009 
or 
(cid:134)(cid:134)(cid:134)(cid:134) TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF 
THE SECURITIES EXCHANGE ACT OF 1934 
For the transition period from ________ to ________ 

COMMISSION FILE NUMBER 000-30205 

CABOT MICROELECTRONICS CORPORATION 
(Exact name of registrant as specified in its charter) 

DELAWARE 
(State of Incorporation) 

870 NORTH COMMONS DRIVE 
AURORA, ILLINOIS 
(Address of principal executive offices) 

36-4324765 
(I.R.S. Employer Identification No.) 

60504 
(Zip Code) 

Registrant’s telephone number, including area code: (630) 375-6631 

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

Title of each class 
Common Stock, $0.001 par value 

Name of each exchange on which registered 
The NASDAQ Stock Market LLC 

Securities registered pursuant to Section 12(g) of the Act:  None 

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.       Yes [ X ]    No [  ] 

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes [  ]    No [ X ]   

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 [ X ]    No [  ]   

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required 
to be submitted and posted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter 
period that the registrant was required to submit and post such files).     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 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. [ X ] (cid:3)(cid:3)(cid:3)(cid:3)

Indicate  by  check  mark  whether  the  registrant  is  a  large  accelerated  filer,  an  accelerated  filer,  a  non-accelerated  filer,  or  a  smaller  reporting  company.   
See definition of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one): 

Large accelerated filer 

[ X ]   

Accelerated filer 

[  ] 

Non-accelerated filer 

[  ] 

Smaller reporting company 

[  ] 

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

The aggregate market value of the registrant’s Common Stock held beneficially or of record by stockholders who are not affiliates of the registrant, based upon 
the  closing  price  of  the  Common  Stock  on  March  31,  2009,  as  reported  by  the  NASDAQ  Global  Select  Market,  was  approximately  $552,778,600.   For  the 
purposes hereof, “affiliates” include all executive officers and directors of the registrant. 

As of October 31, 2009, the Company had 23,445,722 shares of Common Stock outstanding. 

DOCUMENTS INCORPORATED BY REFERENCE 
Portions of the registrant’s definitive Proxy Statement for the Annual Meeting of Stockholders to be held on March 2, 2010, are incorporated by reference in Part 
III of this Form 10-K to the extent stated herein. 

This Form 10-K includes statements that constitute “forward-looking statements” within the meaning of federal securities regulations.  For more detail regarding 
“forward-looking statements” see Item 7 of Part II of this Form 10-K. 

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CABOT MICROELECTRONICS CORPORATION 
FORM 10-K 
FOR THE FISCAL YEAR ENDED SEPTEMBER 30, 2009 

Business  

Item 1. 
Item 1A.  Risk Factors 
Item 1B.  Unresolved Staff Comments 
Item 2. 
Item 3. 
Item 4. 

Properties  
Legal Proceedings 
Submission of Matters to a Vote of Security Holders  
Executive Officers of the Registrant 

Item 5. 

Item 6. 
Item 7. 

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer 
Purchases of Equity Securities 
Selected Financial Data  
Management’s Discussion and Analysis of Financial Condition and Results of 
Operations 

Item 7A.  Quantitative and Qualitative Disclosures about Market Risk  
Financial Statements and Supplementary Data  
Item 8. 
Changes in and Disagreements with Accountants on Accounting and Financial 
Item 9. 
Disclosure  
Item 9A.  Controls and Procedures  
Item 9B.  Other Information  

PART I. 

PART II. 

PART III. 

Item 10.  Directors, Executive Officers and Corporate Governance  
Item 11. 
Item 12. 

Executive Compensation  
Security Ownership of Certain Beneficial Owners and Management and Related  
Stockholder Matters 
Certain Relationships and Related Transactions and Director Independence 
Principal Accountant Fees and Services 

Item 13. 
Item 14. 

PART IV. 

Item 15. 

Exhibits and Financial Statement Schedules 
Exhibit Index 
Signatures 

2 

Page 

3 
12 
15 
16 
16 
17 
17 

19 
21 

22 
34 
35 

67 
67 
68 

68 
68 

69 
69 
69 

69 
70 
74 

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PART I 

ITEM 1.  BUSINESS 

OUR COMPANY  

Cabot Microelectronics Corporation (“Cabot Microelectronics”, “the Company”, “us”, “we”, or “our”), which was 
incorporated in the state of Delaware in 1999, is the leading supplier of high-performance polishing slurries used in the 
manufacture of advanced integrated circuit (IC) devices within the semiconductor industry, in a process called chemical 
mechanical planarization (CMP).  CMP is a polishing process used by IC device manufacturers to planarize or flatten many 
of the multiple layers of material that are deposited upon silicon wafers in the production of advanced ICs.  Our products  
play a critical role in the production of the most advanced IC devices, thereby enabling our customers to produce smaller, 
faster and more complex IC devices with fewer defects. 

  We currently operate predominantly in one industry segment–the development, manufacture and sale of CMP 
consumables.  We develop, produce and sell CMP slurries for polishing many of the conducting and insulating materials  
used in IC devices, and also for polishing certain components in hard disk drives, specifically rigid disk substrates and 
magnetic heads.  In addition, we develop, manufacture and sell CMP polishing pads, which are used in conjunction with 
slurries in the CMP process.  We are also pursuing a number of other demanding surface modification applications outside  
of the semiconductor and hard disk drive industries for which we believe our capabilities and knowledge may provide value 
in improved surface performance or productivity. 

In February 2009, we acquired Epoch Material Co., Ltd. (Epoch), which previously was a consolidated subsidiary of 
Eternal Chemical Co., Ltd. (Eternal).  Epoch is a Taiwan-based company specializing in the development, manufacture and 
sale of copper CMP slurries and CMP cleaning solutions to the semiconductor industry, and color filter slurries to the liquid 
crystal display (LCD) industry.  We believe the acquisition of Epoch provides an excellent opportunity to strengthen and 
grow our core CMP consumables business, primarily in the area of copper CMP slurries, and enhances our ability to 
innovate, deliver and support high-performing, world-class products to our customers around the world. 

CMP PROCESS WITHIN IC DEVICE MANUFACTURING 

IC devices are components in a wide range of electronic systems for computing, communications, manufacturing  

and transportation.  Individual consumers most frequently encounter IC devices as microprocessors in their personal 
computers and as memory chips in computers, cell phones and digital cameras.  The multi-step manufacturing process for  
IC devices typically begins with a circular wafer of pure silicon, with the first manufacturing step referred to as a “wafer 
start”. A large number of identical IC devices, or dies, are manufactured on each wafer at the same time.  The first steps in 
the manufacturing process build transistors and other electronic components on the silicon wafer.  These are isolated from 
each other using a layer of insulating material, most often silicon dioxide, to prevent electrical signals from bridging from 
one transistor to another.  These components are then wired together using conducting materials such as aluminum or copper 
in a particular sequence to produce a functional IC device with specific characteristics.  When the conducting wiring on one 
layer of the IC device is completed, another layer of insulating material is added.  The process of alternating insulating and 
conducting layers is repeated until the desired wiring within the IC device is achieved.  At the end of the process, the wafer  
is cut into the individual dies, which are then packaged to form individual chips.   

Demand for CMP products for IC devices is primarily based on the number of wafer starts by semiconductor 
manufacturers and the complexity of the IC devices they produce.  To enhance the performance of IC devices, IC  
device manufacturers have progressively increased the number and density of electronic components and wiring in each  
IC device.  As a result, the number of wires and the number of discrete wiring layers have increased.  As the complexity of 
IC devices has increased, the demand for CMP products has also increased.  As semiconductor technology has advanced and 
performance requirements of IC devices have increased, the percentage of IC devices that utilize CMP in the manufacturing 
process has increased steadily over time.  We believe that CMP is used in the majority of all IC devices made today, and we 
expect that the use of CMP will continue to increase in the future.   

In the CMP polishing process, CMP consumables are used to level, smooth and remove excess material from the 

surfaces of the layers of IC devices via a combination of chemical reactions and mechanical abrasion, leaving minimal 
residue or defects on the surface, and leaving only the material necessary for circuit integrity.  CMP slurries are liquid 
solutions generally composed of high-purity deionized water and a proprietary mix of chemical additives and engineered 

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abrasives that chemically and mechanically interact at an atomic level with the surface material of the IC device.  CMP pads 
are engineered polymeric materials designed to distribute and transport the slurry to the surface of the wafer and distribute it 
evenly across the wafer.  Grooves are cut into the surface of the pad to facilitate distribution of the slurry.  During the CMP 
process the wafer is typically held on a rotating carrier, which is pressed down against a rotating polishing table and spun in  
a circular motion.  The portion of the table that comes in contact with the wafer is covered by a polishing pad.  A CMP slurry 
is continuously applied to the polishing pad to facilitate and enhance the polishing process.  Hard disk drive manufacturers 
use similar processes to smooth the surface of substrate disks before depositing magnetic media onto the disk. 

An effective CMP process is achieved through technical optimization of the CMP consumables in conjunction with an 

appropriately designed CMP process.  Prior to introducing new or different CMP slurries or pads into its manufacturing 
process, an IC device manufacturer generally requires the product to be qualified in its processes through an extensive series 
of tests and evaluations.  These qualifications are intended to ensure that the CMP consumable product will function properly 
within our customer’s overall manufacturing process.  These tests may require minor changes to the CMP process or the 
CMP slurry or pad.  While this qualification process varies depending on numerous factors, it is generally quite costly and 
may take six months or longer to complete.  IC device manufacturers usually take into account the cost, time required and 
impact on production when they consider implementing or switching to a new CMP slurry or pad. 

CMP enables IC device manufacturers to produce smaller, faster and more complex IC devices with a greater density  

of transistors and other electronic components than is possible without CMP.  By enabling IC device manufacturers to make 
smaller IC devices, CMP also allows them to increase the number of IC devices that fit on a wafer.  This increase in the 
number of IC devices per wafer in turn increases the throughput, or the number of IC devices that can be manufactured in a 
given time period, and thereby reduces the cost per device.  CMP also helps reduce the number of defective or substandard 
IC devices produced, which increases the device yield.  Improvements in throughput and yield reduce an IC device 
manufacturer’s unit production costs, and reducing costs is one of the highest priorities of a semiconductor manufacturer  
as the return on its significant investment in manufacturing capacity can be enhanced by lower unit costs.  More broadly, 
sustained growth in the semiconductor industry traditionally has been fueled by enhanced performance and lower unit costs, 
making IC devices more affordable in an expanding range of applications.   

PRECISION POLISHING 

Through our Engineered Surface Finishes (ESF) business, we are applying our technical expertise in CMP consumables 

and polishing techniques developed for the semiconductor industry to demanding applications in other industries where 
shaping, enabling and enhancing the performance of surfaces is critical to success.  We believe we can deliver improvements 
in production efficiencies, figure precision and surface finish for a variety of difficult-to-polish materials. 

  Many of the production processes currently used in precision machining and polishing have been based on traditional, 
labor-intensive techniques, which are being replaced by computer-controlled, deterministic processes.  Our wholly-owned 
subsidiary, QED Technologies International, Inc. (QED), is a leading provider of deterministic finishing technology for the 
precision optics industry.  We believe precision optics are pervasive, serving several existing large and growing markets  
such as semiconductor equipment, aerospace, defense, security and telecommunications, and also offer growth potential in 
new applications. 

OUR PRODUCTS 

CMP CONSUMABLES FOR IC DEVICES  

  We develop, produce and sell CMP slurries for a wide range of polishing applications of materials that conduct electrical 
signals, including tungsten, copper and tantalum (commonly referred to as “copper barrier” or “barrier”).  Slurries for 
polishing tungsten are used heavily in the production of memory devices for a multitude of end applications such as 
computers, MP3 players, cellphones, gaming devices, digital photography and digital video recorders, as well as in mature 
logic applications such as those used in automobiles.  Our most advanced slurries for tungsten polishing are designed to be 
customized to provide customers greater flexibility, improved performance and a reduced cost of ownership.  Our slurries  
for polishing copper and barrier materials are used primarily in the production of advanced IC logic devices such as 
microprocessors for computers, and devices for graphic systems, gaming systems and communication devices.  These 
products include different slurries for polishing the copper film and the thin barrier layer used to separate copper from the 
adjacent insulating material.  We offer multiple products for each technology node to enable different integration schemes 
depending on specific customer needs. 

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  We also develop, manufacture and sell slurry products used to polish the dielectric insulating materials that separate 
conductive layers within logic and memory IC devices.  Our core slurry products for these materials are used for a wide 
variety of high volume applications.  Our advanced dielectrics products are designed to meet the more stringent and complex 
performance requirements of lower-volume, more specialized dielectric polishing applications at advanced technology nodes.   

  We develop, produce and sell CMP polishing pads, which are consumable materials that work in conjunction with CMP 
slurries in the CMP polishing process.  We believe that CMP polishing pads represent a natural adjacency to our CMP slurry 
business, since the technologies are closely related and utilize the same technical and sales infrastructure.  We believe our 
unique pad material and our continuous pad manufacturing process enable us to produce a pad with a longer pad life, greater 
consistency from pad-to-pad, and enhanced performance, resulting in lower cost of ownership for our customers.  We are 
producing and selling pads that can be used on a variety of polishing tools, over a broad range of applications including 
tungsten, copper and dielectrics, over a range of technology nodes, and on both 200mm and 300mm wafers. 

CMP CONSUMABLES FOR THE DATA STORAGE INDUSTRY 

  We develop and produce CMP slurries for polishing the materials that coat rigid disks and magnetic heads used in hard 
disk drives for computer and other data storage applications, which represent an extension of our core CMP slurry technology 
and manufacturing capabilities established for the semiconductor industry.  We believe CMP significantly improves the 
surface finish of these coatings, resulting in greater storage capacity of the hard disk drive systems, and also improves the 
production efficiency of manufacturers of hard disk drives by helping increase their throughput and yield.   

PRECISION OPTICS PRODUCTS 

Through our QED subsidiary, we design and produce precision polishing and metrology systems for advanced optic 

applications that allow customers to attain near-perfect shape and surface finish on a range of optical components such  
as mirrors, lenses and prisms.  Historically, advanced optics have been produced using labor-intensive artisan processes,  
and variability has been common.  QED has created an automated polishing system that enables rapid, deterministic and 
repeatable surface correction to the most demanding levels of precision in dramatically less time than with traditional  
means.  QED’s polishing systems use Magneto-Rheological Finishing (MRF), a proprietary surface figuring and finishing 
technology, which employs magnetic fluids and sophisticated computer technology to polish a variety of shapes and 
materials.  Its metrology systems use Subaperture Stitching Interferometry (SSI) technology that captures precise metrology 
data for large and/or strongly curved optical parts and an Aspheric Stitching Interferometer (ASI), which is designed to 
measure increasingly complex shapes, including non-spherical surfaces, or aspheres. 

STRATEGY 

  We collaborate with our customers to design and manufacture products that offer innovative and reliable solutions to  
our customers’ challenges and we strive to consistently and reliably deliver and support these products around the world.   
We continue to focus on the execution of our primary strategy of strengthening and growing our core CMP consumables 
business within the semiconductor and hard disk drive industries.  We are also leveraging our expertise in CMP process  
and slurry formulation to expand our ESF business in the optics, electronic substrates and solar markets.  

STRENGTHEN AND GROW OUR CORE CMP CONSUMABLES BUSINESS 

As the leader in the CMP slurry industry, we intend to grow our core CMP consumables business through 

implementation of our three strategic initiatives–maintaining our technological leadership, achieving operations excellence 
and connecting with our customers.  We believe our strong financial position allows us to fund growth opportunities in our 
core CMP consumables business through internally developed technologies as well as through potential acquisitions of 
technologies and businesses such as our acquisition of Epoch in fiscal 2009. 

Technology Leadership:  We believe that technology is vital to success in our CMP consumables business and we devote 

significant resources to research and development.  We continue to develop and produce new CMP products to address 
existing and new CMP applications.  We need to stay ahead of the rapid technological advances in the semiconductor and 
data storage industries in order to deliver a broad line of CMP consumables products that meet or exceed our customers’ 
evolving needs.  We have established research and development facilities in the United States, Japan and Singapore in  
order to meet our customers’ technology needs on a global basis.  In addition, we have recently integrated our existing 
development capability in Taiwan with Epoch’s research and development capability to provide us with an opportunity  
to collaborate more effectively with our customers in the Asia Pacific region. 

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Operations Excellence:  We believe that product quality is critical to success in our business.  Our customers demand 
increasing performance of our products in terms of product quality and consistency.  We strive to drive out variation in our 
products and processes in order to increase quality, productivity and efficiency, and improve the uniformity and consistency 
of performance of our CMP consumable products.  Our global manufacturing sites are managed to ensure we have the 
people, training and systems needed to support the unique industry demands for product quality.  To support our operations 
excellence initiative, we have adopted the concepts of Six Sigma across our Company.  Six Sigma is a systematic, data-
driven approach and methodology for improving quality by reducing variability.  We believe our Six Sigma initiatives  
have contributed to significant, sustained improvement in productivity in our operations over the past five fiscal years.   
We also have extended our Six Sigma initiative to include joint projects with customers and vendors.  We continue to make 
improvements to our supply chain to improve the quality and consistency of our products, processes and raw materials, as 
well as to expand our production capacity. 

Connecting With Our Customers:  We believe that building close relationships with our customers is a key to achieving 

long-term success in our business.  We collaborate with our customers on joint projects to identify and develop new and 
better CMP consumables, to integrate our products into their manufacturing processes, and to assist them with supply, 
warehousing and inventory management.  Our customers demand a highly reliable supply source, and we believe we have  
a competitive advantage because of our ability to timely deliver high-quality products and service from the early stages of 
product development through the commercial use of our products.  We have devoted significant resources to enhance our 
close customer relationships and we are committed to continuing this effort.  We strategically locate our research facilities, 
manufacturing operations and the related technical and customer support teams to be responsive to our customers’ needs.   

The following are some examples of the successful execution of our strategic initiatives during fiscal 2009. 

•  The acquisition of Epoch significantly increased our physical presence in Taiwan, the largest CMP market in the 

world.  We are currently working to capture synergies in the following areas: 

o  We are leveraging our research and development facilities in Taiwan to better utilize the strengths within 

our overall research and development team. 

o  We have transitioned most of our storage and distribution needs in Taiwan to Epoch’s automated 

warehouse facility rather than relying on a third party service provider. 

o  We have transitioned to selling directly Epoch’s products outside of Taiwan through the use of our own 

extensive global sales and logistics network rather than by using third-party distributors. 
•  We continued to grow our pad business, despite the global economic recession and its adverse effect on the 

semiconductor industry, increasing pad revenue from $15 million in fiscal 2008 to nearly $18 million in fiscal 2009.  
We are now selling polishing pads to over 20 customers for commercial use in more than 30 different applications. 
o  We continued to improve our pad manufacturing yields in fiscal 2009.  We have improved our pad yields 

every quarter since we began high volume commercial production. 

o  We completed the installation of on-site pad finishing capability at Taiwan Semiconductor Manufacturing 

Company (TSMC). 

o  We received an “Editors’ Choice Best Products” award for our D100 polishing pad from Semiconductor 

International Magazine. 

•  We have captured customer feedback through a variety of avenues, including customer-supplied scorecards and 

Company-initiated surveys.  We use the feedback from our customers to drive further improvements in all facets  
of our business to increase customer satisfaction. 

o  Our customer satisfaction performance, based on customer-supplied scorecards and our own surveys,  

has continued to improve year after year. 

o  We have received several customer awards recognizing the Company as a key supplier, including a 

supplier award from TSMC that we were honored to receive in November 2008.  

LEVERAGE OUR EXPERTISE INTO NEW MARKETS—ENGINEERED SURFACE FINISHES BUSINESS 

In addition to strengthening and growing our core CMP business, we continue to pursue development of our ESF 

business.  We believe we can leverage our expertise in CMP consumables for the semiconductor industry to develop products 
for demanding polishing applications in other industries that are synergistic to our CMP consumables business.  We are 
focusing on several business areas including precision optics, electronic substrates and solar power. 

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Similar to our core CMP business, our ESF business is technology driven.  For example, we believe our QED subsidiary 

is the technology leader in deterministic finishing for the precision optics industry.  In fiscal 2008, QED was awarded a 
prestigious “R&D 100 award” by R&D Magazine for QED’s development of its SSI-A system.  SSI-A is a precision 
metrology system that is capable of measuring complex optical surfaces, including those that are non-spherical.  In fiscal 
2009, QED enhanced this capability through the introduction of its ASI technology, which allows customers to measure  
more complex shapes. 

INDUSTRY TRENDS 

SEMICONDUCTOR INDUSTRY 

  We believe the semiconductor industry continues to demonstrate several clear trends: the semiconductor business is 
cyclical; there is constant pressure to reduce costs; and the customer base is consolidating. 

The cyclical nature of the semiconductor industry is closely tied to the global economy as well as to supply and demand 
within the industry.  We began to see the adverse effects of a global economic recession in our fourth quarter of fiscal 2008.  
In response to this global economic downturn, and in light of excess inventories of IC devices, semiconductor manufacturers 
reduced their production of IC devices through the first calendar quarter of 2009, which significantly reduced their demand 
for our products.  During the last six months of our fiscal 2009, the industry began to replenish inventories and also 
experienced some improvement in underlying demand, which positively affected the demand for our products.  We believe 
the improvement in underlying demand was likely partially driven by government-sponsored stimulus plans, most visibly in 
China.  There are indications that this global economic recession has ended; however, the timing and pace of a recovery are 
uncertain.  We are confident that semiconductor industry demand will grow over the long term based on growth in underlying 
wafer starts.  We also believe that our Company is well positioned to operate successfully over a range of demand 
environments as we have successfully navigated our business through a number of industry cycles in the past. 

As the demand for more advanced and lower cost electronic devices grows, there is increased pressure on IC device 
manufacturers to reduce their costs.  Many manufacturers reduce costs by pursuing ever-increasing scale in their operations.  
In addition, manufacturers seek ways to optimize their production yield while minimizing their production costs regardless  
of the number of units they produce.  They look for CMP consumables products with improved quality and performance  
that reduce their overall cost of ownership, and they pursue price reductions on the materials they buy.  This pressure on 
manufacturers to reduce costs has also led to a continued increase in the use of foundries where semiconductor companies 
can outsource some or all of their manufacturing to reduce their fixed costs.  This approach also leads to increasing scale  
and lower costs for these foundries. 

The number of semiconductor manufacturers continues to decline both through mergers and acquisitions as well as 
through alliances among different companies.  Smaller manufacturers do not have the resources to compete with the large 
manufacturers on the global basis needed in today’s market.  Many of our customers are forming consortia and research and 
development alliances to better manage the high cost of their development activities.   

CMP CONSUMABLES INDUSTRY  

Demand for CMP consumables is primarily driven by wafer starts, so the CMP consumables industry reflects the 
cyclicality of the semiconductor industry. Our financial results for fiscal 2009 clearly demonstrated this cyclicality.  In the 
first half of our fiscal 2009, we saw the adverse effects of the global economic recession as our revenues for the first six 
months of fiscal 2009 decreased over 42% from the comparable period of fiscal 2008.  However, we saw an upturn in our 
revenue during the second half of fiscal 2009 due to semiconductor manufacturers replenishing their inventories and due  
to increased underlying demand, partially driven by various economic stimulus plans.  Over the long term, we anticipate  
the worldwide market for CMP consumables used by IC device manufacturers will grow as a result of expected long term 
growth in wafer starts, growth in the percentage of IC devices produced that require CMP, an increase in the number of CMP 
polishing steps required to produce these devices and the introduction of new materials in the manufacture of semiconductor 
devices. 

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  We expect the anticipated growth in demand will be somewhat mitigated by increased efficiencies in CMP consumable 
usage as customers seek to reduce their costs.  Semiconductor manufacturers look for ways to lower the cost of CMP 
consumables in their production operations, including diluting slurry or reducing the slurry flow rate during production to 
reduce the total amount of slurry used, and extending the polishing time before replacing pads. 

As semiconductor technology continues to advance, we believe that CMP technical solutions are becoming more 
complex, and leading-edge technologies almost always require some customization by customer, tool set and process 
integration approach.  Leading-edge device designs are introducing more materials and processes into next generation chips, 
and these new materials and processes must be considered in developing CMP solutions.  As a result, customers are selecting 
suppliers earlier in their development processes and are maintaining preferred supplier relationships through production.   
We believe that close collaboration between customers and suppliers offers the best opportunity for optimal CMP solutions.  
We also believe that research and development programs are critically important as we develop innovative, high-performing 
and more cost-effective CMP solutions. 

COMPETITION 

  We compete in the CMP consumables industry, which is characterized by rapid advances in technology and demanding 
product quality and consistency requirements.  We face competition from other CMP consumables suppliers, and we also 
may face competition in the future from significant changes in technology or emerging technologies.  However, we believe 
we are well positioned to continue our leadership in the CMP slurry industry.  We believe we have the scale, capabilities and 
infrastructure that are required for success, and we work closely with the largest customers in the semiconductor industry to 
meet their growing expectations. 

Our CMP slurry competitors range from small companies that compete with a single product and/or in a single 
geographic region to divisions of global companies with multiple lines of IC manufacturing products.  However, we believe 
we have more CMP slurry business than any other provider.  In our view, we are the only CMP slurry supplier today which 
serves a broad range of customers by offering and supporting a full line of CMP slurry products for all major applications 
over a range of technologies, and that has a proven track record of supplying these products globally in high volumes with  
the attendant required high level of technical support services.   

The CMP polishing pad market has been dominated by a single entity that has held this position for a number of years.  

A number of other companies are attempting to enter this market, providing potentially viable product alternatives.  We 
believe our pad materials and our continuous pad manufacturing process have enabled us to produce a pad with a longer pad 
life with more consistency for our customers, thus reducing their total pad cost.  We believe this has fueled significant growth 
in sales of our pad products.  We are currently developing our next generation of pad products which we believe could offer 
our customers an even better solution over a broader range of applications. 

Our QED subsidiary operates in the precision optics industry.  There are few direct competitors of QED because its 
technology is relatively new and unique.  We believe QED’s technology provides a competitive advantage to customers in 
the precision optics industry which still relies heavily on traditional artisan-based methods of fabrication.   

CUSTOMERS, SALES AND MARKETING 

  Within the semiconductor industry, our customers are primarily producers of logic IC devices, producers of memory  
IC devices and IC foundries.  Often, logic and memory companies outsource some or all of the production of physical 
devices to foundries, which provide contract manufacturing services, in order to avoid the high cost of constructing and 
operating a fab or in cases where they need additional capacity.   

Based upon our own observations and customer survey results, we believe the following factors influence our customers’ 
CMP buying decisions: overall cost of ownership, which represents the cost to purchase, use and maintain a product; product 
quality and consistency; product yield and performance; engineering support; and delivery/supply assurance.  We believe that 
greater customer sophistication in the CMP process, more demanding integration schemes, additional and unique polishing 
materials and cost pressures will add further demands on CMP consumable suppliers. When these factors are combined with 
our customers’ desires to gain purchasing leverage and lower their cost of ownership, we believe that only the most reliable, 
innovative, cost effective, service driven CMP consumables suppliers will thrive.   

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  We use an interactive approach to build close relationships with our customers in a variety of areas and we have 
customer-focused teams located in each major region of sales.  Our sales process begins long before the actual sale of  
our products and occurs on a number of levels.  Due to the long lead times from research and development to product 
commercialization and sales, we have research teams that collaborate with customers on emerging applications years before 
the products are required by the market.  We also have development teams that coordinate with our customers, using our 
research and development facilities and capabilities to design CMP products tailored to their precise needs.  Next, our 
applications engineers work with customers to integrate our products into their manufacturing processes.  Finally, as  
part of our sales process, our logistics and sales personnel provide supply, warehousing and inventory management for  
our customers.   

  We market our products primarily through direct sales to our customers, although we use distributors in select areas.   
We believe this strategy is one way we can achieve our goal of connecting with our customers.  Our Epoch subsidiary’s 
products sold outside of Taiwan used to be sold primarily through distributors; as we continue to integrate the Epoch 
business, we now sell the majority of these products directly through our global sales channels. 

Our QED subsidiary supports customers in the semiconductor equipment, aerospace, defense, security and 
telecommunications markets.  QED counts among its worldwide customers leading precision optics manufacturers,  
major semiconductor original equipment manufacturers, the United States government and its contractors. 

In fiscal 2009, our five largest customers accounted for approximately 42% of our revenue, with TSMC accounting for 
approximately 17% of our revenue.  For additional information on concentration of customers, refer to Note 2 of “Notes to the 
Consolidated Financial Statements” included in Item 8 of Part II of this Form 10-K.  

RESEARCH, DEVELOPMENT AND TECHNICAL SUPPORT 

  We believe that technology is vital to success in our CMP business as well as in our ESF business, and we plan to 
continue to devote significant resources to research, development and technical support (R&D), and balance our efforts 
between the shorter-term market needs and the longer-term investments required of us as a technology leader.  We develop 
and formulate new and enhanced CMP consumables and new CMP processes tailored to our customers’ needs.  We work 
closely with our customers at their facilities to identify their specific technology and manufacturing challenges and to 
translate these challenges into viable CMP process solutions. 

Our technology efforts are currently focused on five main areas that span the early conceptual stage of product 
development involving new materials, processes and designs several years in advance of commercialization, through to 
continuous improvement of already commercialized products in daily use in our customers’ manufacturing facilities.   
These five areas are:  

•  Research related to fundamental CMP technology; 
•  Development and formulation of new and enhanced CMP consumables products, including collaborating on joint 

development projects with our customers;  

•  Process development to support rapid and effective commercialization of new products; 
•  Technical support of CMP products in our customers’ manufacturing facilities; and 
•  Evaluation of new polishing and metrology applications outside of the semiconductor industry. 

Our research in CMP slurries and pads addresses a breadth of complex and interrelated performance criteria that relate  
to the functional performance of the chip, our customers’ manufacturing yield, and their overall cost of ownership. We design 
slurries and pads that are capable of polishing one or more materials, sometimes at the same time, that make up the semi-
conductor circuitry.  Additionally, our products must achieve the desired surface conditions at high polishing rates, high 
processing yields and low consumables costs in order to earn acceptable system economics for our customers.  As 
dimensions become smaller and as materials and designs increase in complexity, these challenges require significant 
investments in R&D. 

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Beyond CMP for the semiconductor and data storage industries, we also commit internal R&D resources to our ESF 
business.  We believe that a number of application areas we are currently developing represent natural adjacencies to our core 
CMP business and technology, such as precision optics, electronic substrates and solar power.  Products under development 
include products used to polish silicon and silicon-carbide wafers to improve the surface quality of these wafers and reduce 
the customers’ total cost of ownership.   

  We believe that competitive advantage lies in technology leadership, and that our investments in R&D provide us with 
leading-edge polishing and metrology capabilities to support the most advanced and challenging customer technology 
requirements on a global basis.  In fiscal 2009, 2008 and 2007, we incurred approximately $48.2 million, $49.2 million and 
$50.0 million, respectively, in R&D expenses.  We believe our Six Sigma initiatives in our R&D efforts realized over $3 
million in cost savings in fiscal 2009, allowing us to conduct more research at a lower cost.  Investments in property, plant 
and equipment to support our R&D efforts are capitalized and depreciated over their useful lives.  We operate a R&D facility 
in Aurora, Illinois, that is staffed by a team that includes experts from the semiconductor industry and scientists from key 
disciplines required for the development of high-performance CMP consumable products.  This facility features a Class 1 
clean room and advanced equipment for product development, including 300 mm polishing and metrology capabilities, the 
experimental results from which we believe correlate closely with what our customers experience when using our products in 
their factories.  In addition, we operate a technology center in Japan, which includes 300 mm polishing, metrology and slurry 
development capability, which we believe enhances our ability to provide optimized CMP solutions to our customers in the 
Asia Pacific region.  Epoch also has R&D capability, including a clean room with 200 mm polishing capability.  These 
facilities underscore our commitment both to continuing to invest in our technology infrastructure to maintain our technology 
leadership, and to becoming even more responsive to the needs of our customers.  Other examples of this commitment 
include our QED research facility in Rochester, New York, as well as our laboratory in Singapore that provides additional 
slurry formulation capability to support the data storage industry. 

RAW MATERIALS SUPPLY 

  Metal oxides, such as silica and alumina, are significant raw materials we use in many of our CMP slurries.  In the 
interest of supply assurance, our strategy is to secure multiple sources of raw materials and qualify and monitor those sources 
as necessary to ensure our supply of raw materials remains uninterrupted.  Also, we have entered into multi-year supply 
agreements with a number of suppliers for the purchase of raw materials, including agreements with Cabot Corporation for 
the purchase of certain amounts and types of fumed silica and fumed alumina.  For additional information regarding these 
agreements, refer to “Tabular Disclosure of Contractual Obligations”, included in “Management’s Discussion and Analysis 
of Financial Condition and Results of Operations”, in Item 7 of Part II of this Form 10-K.   

INTELLECTUAL PROPERTY 

Our intellectual property is important to our success and ability to compete.  As of October 31, 2009, we had 188 active 
U.S. patents and 94 pending U.S. patent applications.  In most cases we file counterpart foreign patent applications.  Many of 
these patents are important to our continued development of new and innovative products for CMP and related processes, as 
well as for new businesses.  Our patents have a range of duration and we do not expect to lose any material patent through 
expiration in the next five years.  We attempt to protect our intellectual property rights through a combination of patent, 
trademark, copyright and trade secret laws, as well as employee and third party nondisclosure and assignment agreements.  
We vigorously and proactively pursue parties that attempt to compromise our investments in research and development by 
infringing our intellectual property.  For example, in January 2007, we filed a legal action against DuPont Air Products 
NanoMaterials LLC (DA Nano), a competitor of ours, charging that DA Nano’s manufacture and marketing of certain CMP 
slurries infringe five CMP slurry patents that we own, and that litigation is ongoing.  In addition, in the third quarter of fiscal 
2006, we were successful in an action we brought before the United States International Trade Commission (ITC) concerning 
Cheil Industries, Inc. (Cheil) which resulted in the prohibition of the importation and sale within the United States of certain 
CMP slurries that infringe certain of our patents, and we have litigation currently ongoing in Korea against Cheil regarding 
the same patent family. 

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  Most of our intellectual property has been developed internally, but we also may acquire intellectual property from 
others to enhance our intellectual property portfolio.  These enhancements may be via licenses or assignments or we may 
acquire certain proprietary technology and intellectual property when we make acquisitions, such as through our acquisitions 
of Epoch, QED and Surface Finishes Co.  We believe these technology rights continue to enhance our competitive advantage 
by providing us with future product development opportunities and expanding our already substantial intellectual property 
portfolio. 

ENVIRONMENTAL MATTERS 

Our facilities are subject to various environmental laws and regulations, including those relating to air emissions, 
wastewater discharges, the handling and disposal of solid and hazardous wastes, and occupational safety and health.  We 
believe that our facilities are in substantial compliance with applicable environmental laws and regulations.  By utilizing  
Six Sigma in our environmental management system process, we believe we have improved operating efficiencies while 
protecting the environment.  Our operations in the United States, Japan and Taiwan are ISO 14001 Certified, which requires 
that we implement and operate according to various procedures that demonstrate our dedication to waste reduction, energy 
conservation and other environmental concerns.  We are committed to maintaining these certifications and are actively 
pursuing ISO 14001 certification for our operations in Singapore.  We will also obtain additional certifications, as applicable, 
in the areas in which we do business.  We have incurred, and will continue to incur, capital and operating expenditures and 
other costs in complying with these laws and regulations in both the United States and abroad.  However, we currently do not 
anticipate that the future costs of environmental compliance will have a material adverse effect on our business, financial 
condition or results of operations. 

EMPLOYEES 

  We believe we have a world-class team of employees who make our Company successful.  As of October 31, 2009,  
we employed 882 individuals, including 460 in operations, 219 in research and development and technical, 93 in sales and 
marketing and 110 in administration.  None of our employees are covered by collective bargaining agreements.  We have not 
experienced any work stoppages and in general consider our relations with our employees to be good.  

FINANCIAL INFORMATION ABOUT GEOGRAPHIC AREAS 

  We sell our products worldwide.  Our geographic coverage allows us to utilize our business and technical expertise from 
a worldwide workforce, provides stability to our operations and revenue streams to offset geography-specific economic 
trends, and offers us an opportunity to take advantage of new markets for products.  

For more financial information about geographic areas, see Note 19 of “Notes to the Consolidated Financial Statements”, 

included in Item 8 of Part II of this Form 10-K. 

AVAILABLE INFORMATION 

Our annual reports on Form 10-K, quarterly reports on Form 10-Q, definitive proxy statements on Form 14A, current 

reports on Form 8-K, and any amendments to those reports are made available free of charge on our Company website, 
www.cabotcmp.com, as soon as reasonably practicable after such reports are filed with the Securities and Exchange 
Commission (SEC).  Statements of changes in beneficial ownership of our securities on Form 4 by our executive officers  
and directors are made available on our Company website by the end of the business day following the submission to the 
SEC of such filings.  In addition, the SEC’s website (http://www.sec.gov) contains reports, proxy statements, and other 
information that we file electronically with the SEC. 

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ITEM 1A.  RISK FACTORS 

  We do not believe there have been any material changes in our risk factors since the filing of our Annual Report on  
Form 10-K for the fiscal year ended September 30, 2008 other than the risks related to worldwide economic and industry 
conditions, as described below.  We may update our risk factors in our SEC filings from time to time for clarification 
purposes or to include additional information, at management’s discretion, even when there have been no material changes. 

RISKS RELATING TO OUR BUSINESS 

DEMAND FOR OUR PRODUCTS FLUCTUATES AND OUR BUSINESS MAY BE ADVERSELY AFFECTED  
BY WORLDWIDE ECONOMIC AND INDUSTRY CONDITIONS 

Our business is affected by economic and industry conditions and our revenue is dependent upon semiconductor 
demand.  Semiconductor demand, in turn, is impacted by semiconductor industry cycles, and these cycles can dramatically 
affect our business.  These cycles may be characterized by decreases in product demand, excess customer inventories, and 
accelerated erosion of prices.  Our business has been significantly impacted by the global economic recession.  We first 
began to see significant adverse effects of this in our fourth quarter of fiscal 2008 as the reduction in end user demand for  
IC devices caused semiconductor manufacturers to reduce their production, which reduced the demand for our CMP 
consumables products.  We believe weakness of the U.S. and global economy and stress in the financial markets have 
persisted, and this caused a significant decrease in demand for our products during fiscal 2009, as our revenue decreased 
22.3% from revenue earned in fiscal 2008.  Although demand for our products increased significantly during the second  
half of fiscal 2009 from the level achieved during the first half of the fiscal year, it is uncertain if this increase in demand  
will continue.  If global economic conditions remain uncertain or deteriorate further, we may experience additional material 
adverse impacts on our results of operations and financial condition. 

Continued adverse global economic conditions may have other negative effects on our Company such as: 
•  The ability of our customers to pay their obligations to us may be adversely affected causing a negative impact  
on our cash flows and our results of operations as evidenced by the bankruptcy filing of a small number of our 
customers in fiscal 2009. 

•  The carrying value of our goodwill and other intangible assets may decline in value, which could harm our financial 

position and results of operations. 

•  Our suppliers may not be able to fulfill their obligations to us, which could harm our production process and our 

business. 

Some additional factors that affect demand for our products include customers’ production of logic versus memory 
devices, their transition from 200 mm to 300 mm wafers, customers’ specific integration schemes, share gains and losses  
and pricing changes by us and our competitors.   

WE HAVE A NARROW PRODUCT RANGE AND OUR PRODUCTS MAY BECOME OBSOLETE, OR 
TECHNOLOGICAL CHANGES MAY REDUCE OR LIMIT INCREASES IN THE CONSUMPTION OF  
CMP SLURRIES AND PADS 

Our business is substantially dependent on a single class of products, CMP slurries, which account for the majority of 
our revenue.  Our business in CMP pads is also developing and growing.  Our business would suffer if these products became 
obsolete or if consumption of these products decreased.  Our success depends on our ability to keep pace with technological 
changes and advances in the semiconductor industry and to adapt, improve and customize our products for advanced IC 
applications in response to evolving customer needs and industry trends.  Since its inception, the semiconductor industry  
has experienced rapid technological changes and advances in the design, manufacture, performance and application of IC 
devices, and our customers continually pursue lower cost of ownership of materials consumed in their manufacturing 
processes, including CMP slurries and pads.  We expect these technological changes and advances, and this drive toward 
lower costs, will continue in the future.  Potential technology developments in the semiconductor industry, as well as our 
customers’ efforts to reduce consumption of CMP slurries and pads and possible reuse or recycling of slurries, could render 
our products less important to the IC device manufacturing process. 

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A SIGNIFICANT AMOUNT OF OUR BUSINESS COMES FROM A LIMITED NUMBER OF LARGE 
CUSTOMERS AND OUR REVENUE AND PROFITS COULD DECREASE SIGNIFICANTLY IF WE LOST  
ONE OR MORE OF THESE CUSTOMERS 

Our customer base is concentrated among a limited number of large customers.  One or more of these principal 

customers could stop buying CMP consumables from us or could substantially reduce the quantity of CMP consumables they 
purchase from us.  Our principal customers also hold considerable purchasing power, which can impact the pricing and terms 
of sale of our products.  Any deferral or significant reduction in CMP consumables sold to these principal customers, or a 
significant number of smaller customers, could seriously harm our business, financial condition and results of operations.   

In fiscal 2009, our five largest customers accounted for approximately 42% of our revenue, with Taiwan Semiconductor 

Manufacturing Company (TSMC) accounting for approximately 17% of our revenue.  In fiscal 2008, our five largest 
customers accounted for approximately 44% of our revenue; with TSMC accounting for approximately 17% of our revenue. 

OUR BUSINESS COULD BE SERIOUSLY HARMED IF OUR COMPETITORS DEVELOP SUPERIOR SLURRY 
PRODUCTS, OFFER BETTER PRICING TERMS OR SERVICE, OR OBTAIN CERTAIN INTELLECTUAL 
PROPERTY RIGHTS 

Competition from other CMP slurry manufacturers could seriously harm our business and results of operations.  

Competition from other providers of CMP slurries could continue to increase, and opportunities exist for other companies to 
emerge as potential competitors by developing their own CMP slurry products.  Increased competition has and may continue 
to impact the prices we are able to charge for our slurry products as well as our overall business.  In addition, our competitors 
could have or obtain intellectual property rights which could restrict our ability to market our existing products and/or to 
innovate and develop new products. 

ANY PROBLEM OR DISRUPTION IN OUR SUPPLY CHAIN, INCLUDING SUPPLY OF OUR MOST 
IMPORTANT RAW MATERIALS, OR IN OUR ABILITY TO MANUFACTURE AND DELIVER OUR 
PRODUCTS TO OUR CUSTOMERS,  COULD ADVERSELY AFFECT OUR RESULTS OF OPERATIONS 

  We depend on our supply chain to enable us to meet the demands of our customers.  Our supply chain includes the raw 
materials we use to manufacture our products, our production operations, and the means by which we deliver our products to 
our customers.  Our business could be adversely affected by any problem or interruption in our supply of the key raw 
materials we use in our CMP slurries and pads, including fumed silica, which we use for certain of our slurries, or any 
problem or interruption that may occur during production or delivery of our products, such as weather-related problems or 
natural disasters. 

For instance, Cabot Corporation continues to be our primary supplier of particular amounts and types of fumed silica.  
We believe it would be difficult to promptly secure alternative sources of key raw materials, including fumed silica, in the 
event one of our suppliers becomes unable to supply us with sufficient quantities of raw materials that meet the quality and 
technical specifications required by our customers.  In addition, contractual amendments to the existing agreements with, or 
non-performance by, our suppliers, including any significant financial distress our suppliers may suffer, could adversely 
affect us.  Also, if we change the supplier or type of key raw materials we use to make our CMP slurries or pads, or are 
required to purchase them from a different manufacturer or manufacturing facility or otherwise modify our products, in 
certain circumstances our customers might have to requalify our CMP slurries and pads for their manufacturing processes 
and products.  The requalification process could take a significant amount of time and expense to complete and could 
motivate our customers to consider purchasing products from our competitors, possibly interrupting or reducing our sales  
of CMP consumables to these customers. 

WE ARE SUBJECT TO RISKS ASSOCIATED WITH OUR FOREIGN OPERATIONS 

  We currently have operations and a large customer base outside of the United States.  Approximately 84%, 81% and 79% 
of our revenue was generated by sales to customers outside of the United States for fiscal 2009, 2008 and 2007, respectively.  
We encounter risks in doing business in certain foreign countries, including, but not limited to, adverse changes in economic and 

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political conditions, fluctuation in exchange rates, compliance with a variety of foreign laws and regulations, as well as difficulty 
in enforcing business and customer contracts and agreements, including protection of intellectual property rights.   

WE MAY PURSUE ACQUISITIONS OF, INVESTMENTS IN, AND STRATEGIC ALLIANCES WITH OTHER 
ENTITIES, WHICH COULD DISRUPT OUR OPERATIONS AND HARM OUR OPERATING RESULTS IF 
THEY ARE UNSUCCESSFUL 

  We expect to continue to make investments in companies, either through acquisitions, investments or alliances, in  
order to supplement our internal growth and development efforts.  Acquisitions and investments, including our acquisition  
of Epoch Material Co., Ltd., a Taiwan-based company, the first closing of which we completed in the fiscal quarter ended 
March 31, 2009, involve numerous risks, including the following: difficulties in integrating the operations, technologies, 
products and personnel of acquired companies; diversion of management’s attention from normal daily operations of the 
business; increased risk associated with foreign operations; potential difficulties in entering markets in which we have limited 
or no direct prior experience and where competitors in such markets have stronger market positions; potential difficulties in 
operating new businesses with different business models; potential difficulties with regulatory or contract compliance in 
areas in which we have limited experience; initial dependence on unfamiliar supply chains or relatively small supply partners; 
insufficient revenues to offset increased expenses associated with acquisitions; potential loss of key employees of the 
acquired companies; or inability to effectively cooperate and collaborate with our alliance partners. 

Further, we may never realize the perceived or anticipated benefits of a business combination or investments in other 
entities.  Acquisitions by us could have negative effects on our results of operations, in areas such as contingent liabilities, 
gross profit margins, amortization charges related to intangible assets and other effects of accounting for the purchases of 
other business entities.  Investments in and acquisitions of technology-related companies are inherently risky because these 
businesses may never develop, and we may incur losses related to these investments.  In addition, we may be required to 
write down the carrying value of these acquisition or investments to reflect other than temporary declines in their value, 
which could harm our business and results of operations.   

BECAUSE WE HAVE LIMITED EXPERIENCE IN BUSINESS AREAS OUTSIDE OF CMP SLURRIES, 
EXPANSION OF OUR BUSINESS INTO NEW PRODUCTS AND APPLICATIONS MAY NOT BE SUCCESSFUL 

An element of our strategy has been to leverage our current customer relationships and technological expertise to  
expand our CMP business from CMP slurries into other areas, such as CMP polishing pads.  Additionally, pursuant to our 
Engineered Surface Finishes business, we are pursuing a number of surface modification applications, such as high precision 
optics.  Expanding our business into new product areas could involve technologies, production processes and business 
models in which we have limited experience, and we may not be able to develop and produce products or provide services 
that satisfy customers’ needs or we may be unable to keep pace with technological or other developments.  Also, our 
competitors may have or obtain intellectual property rights which could restrict our ability to market our existing products 
and/or to innovate and develop new products. 

BECAUSE WE RELY HEAVILY ON OUR INTELLECTUAL PROPERTY, OUR FAILURE TO ADEQUATELY 
OBTAIN OR PROTECT IT COULD SERIOUSLY HARM OUR BUSINESS 

Protection of intellectual property is particularly important in our industry because we develop complex technical 

formulas for CMP products that are proprietary in nature and differentiate our products from those of our competitors.   
Our intellectual property is important to our success and ability to compete. We attempt to protect our intellectual property 
rights through a combination of patent, trademark, copyright and trade secret laws, as well as employee and third-party 
nondisclosure and assignment agreements.  Due to our international operations, we pursue protection in 
different jurisdictions, which may provide varying degrees of protection, and we cannot provide assurance that we can 
obtain adequate protection in each such jurisdiction.  Our failure to obtain or maintain adequate protection of our intellectual 
property rights for any reason, including through the patent prosecution process or in the event of litigation related to such 
intellectual property, such as the current litigation between us and DuPont Air Products Nanomaterials described above in 
Part I, Item 1 under the heading “Intellectual Property” and in Part I, Item 3 under the heading “Legal Proceedings”, could 
seriously harm our business.  In addition, the costs of obtaining or protecting our intellectual property could negatively affect 
our operating results. 

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WE MAY NOT BE ABLE TO MONETIZE OUR INVESTMENTS IN AUCTION RATE SECURITIES IN THE 
SHORT TERM AND WE COULD EXPERIENCE A DECLINE IN THEIR MARKET VALUE, WHICH COULD 
ADVERSELY AFFECT OUR FINANCIAL RESULTS 

  We owned auction rate securities (ARS) with an estimated fair value of $8.1 million ($8.3 million par value) at 
September 30, 2009, which were classified as Other Long-Term Assets on our Consolidated Balance Sheet.  If auctions 
involving our ARS continue to fail, if issuers of our ARS are unable to refinance the underlying securities, if issuers are 
unable to pay debt obligations and related bond insurance fails, or if credit ratings decline or other adverse developments 
occur in the credit markets, then we may not be able to monetize these securities in the foreseeable future.  We may also  
be required to further adjust the carrying value of these instruments through an impairment charge that may be deemed  
other-than-temporary which would adversely affect our financial results. 

OUR INABILITY TO ATTRACT AND RETAIN KEY PERSONNEL COULD CAUSE OUR BUSINESS  
TO SUFFER 

If we fail to attract and retain the necessary managerial, technical and customer support personnel, our business and  
our ability to maintain existing and obtain new customers, develop new products and provide acceptable levels of customer 
service could suffer.  We compete with other industry participants for qualified personnel, particularly those with significant 
experience in the semiconductor industry.  The loss of services of key employees could harm our business and results of 
operations. 

RISKS RELATING TO THE MARKET FOR OUR COMMON STOCK  

THE MARKET PRICE MAY FLUCTUATE SIGNIFICANTLY AND RAPIDLY 

The market price of our common stock has fluctuated and could continue to fluctuate significantly as a result of  
factors such as: economic and stock market conditions generally and specifically as they may impact participants in the 
semiconductor and related industries; changes in financial estimates and recommendations by securities analysts who  
follow our stock; earnings and other announcements by, and changes in market evaluations of, us or participants in the 
semiconductor and related industries; changes in business or regulatory conditions affecting us or participants in the 
semiconductor and related industries; announcements or implementation by us, our competitors, or our customers of 
technological innovations, new products or different business strategies; and trading volume of our common stock. 

ANTI-TAKEOVER PROVISIONS UNDER OUR CERTIFICATE OF INCORPORATION AND BYLAWS AND 
OUR RIGHTS PLAN MAY DISCOURAGE THIRD PARTIES FROM MAKING AN UNSOLICITED BID FOR 
OUR COMPANY 

Our certificate of incorporation, our bylaws, our rights plan and various provisions of the Delaware General Corporation 

Law may make it more difficult to effect a change in control of our Company.  For example, our amended and restated 
certificate of incorporation authorizes our Board of Directors to issue up to 20 million shares of blank check preferred stock 
and to attach special rights and preferences to this preferred stock, which may make it more difficult or expensive for another 
person or entity to acquire control of us without the consent of our Board of Directors.  Also our amended and restated 
certificate of incorporation provides for the division of our Board of Directors into three classes as nearly equal in size as 
possible with staggered three-year terms.   

  We have adopted change in control arrangements covering our executive officers and other key employees.  These 
arrangements provide for a cash severance payment, continued medical benefits and other ancillary payments and benefits 
upon termination of service of a covered employee’s employment following a change in control, which may make it more 
expensive to acquire our Company. 

ITEM 1B.  UNRESOLVED STAFF COMMENTS 

  None. 

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ITEM 2.  PROPERTIES  

Our principal U.S. facilities that we own consist of: 

(cid:131) 

(cid:131) 

(cid:131) 

(cid:131) 
(cid:131) 

a global headquarters and research and development facility in Aurora, Illinois, comprising approximately 200,000 
square feet; 
a commercial dispersion plant and distribution center in Aurora, Illinois, comprising approximately 175,000 square 
feet;  
a commercial polishing pad manufacturing plant and offices in Aurora, Illinois, comprising approximately 48,000 
square feet; 
an additional 13.2 acres of vacant land in Aurora, Illinois; and 
a facility in Addison, Illinois, comprising approximately 15,000 square feet. 

In addition, we lease a facility in Rochester, New York, comprising approximately 21,000 square feet. 

Our principal foreign facilities that we or our subsidiaries own consist of: 

(cid:131) 

(cid:131) 

(cid:131) 

a commercial dispersion plant, automated warehouse, research and development facility and offices in  
Kaohsiung County, Taiwan, comprising approximately 170,000 square feet; 
a commercial dispersion plant and distribution center in Geino, Japan, comprising approximately 113,000  
square feet; 
a development and technical support facility in Geino, Japan, comprising approximately 20,000 square feet. 

Our principal foreign facilities that we lease consist of: 

(cid:131) 

(cid:131) 

an office, research and development laboratory and polishing pad manufacturing plant in Hsin-Chu, Taiwan, 
comprising approximately 31,000 square feet; 
a commercial manufacturing plant, research and development facility and business office in Singapore, comprising 
approximately 24,000 square feet. 

  We believe that our facilities are suitable and adequate for their intended purpose and provide us with sufficient capacity 
and capacity expansion opportunities and technological capability to meet our current and expected demand in the 
foreseeable future.   

ITEM 3.  LEGAL PROCEEDINGS 

  While we are not involved in any legal proceedings that we believe will have a material impact on our consolidated 
financial position, results of operations or cash flows, we periodically become a party to legal proceedings in the ordinary 
course of business.  For example, in January 2007, we filed a legal action against DuPont Air Products NanoMaterials LLC 
(DA Nano), a CMP slurry competitor, in the United States District Court for the District of Arizona, charging that DA 
Nano’s manufacturing and marketing of CMP slurries infringe five CMP slurry patents that we own.  The affected DA Nano 
products include certain products used for tungsten CMP.  We filed our infringement complaint as a counterclaim in response 
to an action filed by DA Nano in the same court in December 2006 that seeks declaratory relief and alleges non-infringement, 
invalidity and unenforceability regarding some of the patents at issue in our complaint against DA Nano.  DA Nano filed its 
complaint following our refusal of its request that we license to it our patents raised in its complaint.  DA Nano’s complaint 
does not allege any infringement by our products of intellectual property owned by DA Nano.  On July 25, 2008, the District 
Court issued its patent claim construction, or “Markman” Order (“Markman Order”) in the litigation.  In a Markman ruling,  
a district court hearing a patent infringement case interprets and rules on the scope and meaning of disputed patent claim 
language regarding the patents in suit.  We believe that a Markman decision is often a significant factor in the progress and 
outcome of patent infringement litigation.  In the Markman Order, the District Court adopted interpretations that we believe 
are favorable to Cabot Microelectronics on all claim terms that were in dispute in the litigation.  On January 27, 2009, we 
filed a motion for summary judgment on DA Nano’s infringement of certain of the patents at issue in the suit, and on that 
same date, DA Nano filed a motion for summary judgment on non-infringement and invalidity of certain of the patents at 
issue in the suit.  On November 16, 2009, the District Court issued its ruling on all of these respective summary judgment 
motions.  In its summary judgment ruling, the District Court denied a motion filed by DA Nano for summary judgment of  

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invalidity of three of our patents at issue in the case, which are fundamental patents in the field of tungsten CMP.  The 
District Court also denied DA Nano’s motion for summary judgment of non-infringement of these patents.  In addition, the 
District Court denied DA Nano’s motion for summary judgment of non-infringement of another one of our patents at issue  
in the suit that is considered to be a foundational CMP patent.  The District Court also denied Cabot Microelectronics’ 
motion for summary judgment of infringement of the tungsten patents, stating that despite the weight of the record on DA 
Nano’s infringement, summary judgment is not the forum to decide issues of fact that remain.  We believe that the recently 
issued summary judgment ruling supports our position on the merits of the case with regard to the evidence of DA Nano’s 
infringement of our tungsten patents and the lack of evidence of invalidity of these patents.  Although no trial date has yet 
been set, as part of the summary judgment ruling, the District Court has ordered the parties to submit pretrial filings by 
December 16, 2009, and as a result of this and the ruling on the summary judgment motions, we now expect the case to 
proceed in a timely manner, with trial possibly scheduled for the first half of calendar 2010.  While the outcome of this and 
any legal matter cannot be predicted with certainty, we continue to believe that our claims and defenses in the pending action 
are meritorious, and we intend to continue to pursue and defend them vigorously.   

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS 

None. 

EXECUTIVE OFFICERS OF THE REGISTRANT 

 Set forth below is information concerning our executive officers and their ages as of October 31, 2009.  

NAME 

AGE 

POSITION 

William P. Noglows 
H. Carol Bernstein  
Yumiko Damashek 
William S. Johnson 
David H. Li 
Daniel J. Pike 
Stephen R. Smith 
Clifford L. Spiro 
Adam F. Weisman 
Daniel S. Wobby 
Thomas S. Roman 

51 
49 
53 
52 
36 
46 
50 
55 
47 
46 
48 

  Chairman of the Board, President and Chief Executive Officer 
  Vice President, Secretary and General Counsel 
  Vice President, Japan and Operations Asia 
  Vice President and Chief Financial Officer  
  Vice President, Asia Pacific Region 
  Vice President, Corporate Development 
  Vice President, Marketing  
  Vice President, Research and Development 
  Vice President, Business Operations 
  Vice President, Global Sales 
  Principal Accounting Officer and Corporate Controller 

WILLIAM P. NOGLOWS has served as our Chairman, President and Chief Executive Officer since November 2003.   
Mr. Noglows had previously served as a director of our Company from January 2000 until April 2002.  Prior to joining  
us, Mr. Noglows served as an Executive Vice President of Cabot Corporation from 1998 to June 2003.  Prior to that,  
Mr. Noglows held various management positions at Cabot Corporation including General Manager of Cabot Corporation’s  
Cab-O-Sil Division, where he was one of the primary founders of our Company when our business was a division of Cabot 
Corporation, and was responsible for identifying and encouraging the development of the CMP application.  Mr. Noglows 
received his B.S. in Chemical Engineering from the Georgia Institute of Technology.  Mr. Noglows is also a director of 
Littelfuse, Inc. 

H. CAROL BERNSTEIN has served as our Vice President, Secretary and General Counsel since August 2000.   
From January 1998 until joining us, Ms. Bernstein served as the General Counsel and Director of Industrial Technology 
Development of Argonne National Laboratory, which is operated by the University of Chicago for the United States 
Department of Energy.  From May 1985 until December 1997, she served in various positions with the IBM Corporation, 
culminating in serving as an Associate General Counsel, and was the Vice President, Secretary and General Counsel of 
Advantis Corporation, an IBM joint venture.  Ms. Bernstein received her B.A. from Colgate University and her J.D.  
from Northwestern University; she is a member of the Bar of the states of Illinois and New York. 

YUMIKO DAMASHEK has served as our Vice President, Japan and Operations Asia since June 2008.  Previously,  
Ms. Damashek served as Managing Director of Japan since November 2005.  Prior to joining us, Ms. Damashek served as 

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President for Celerity Japan, Inc.  Prior to that, she held various leadership positions at Global Partnership Creation, Inc. and 
Millipore Corporation.  Ms. Damashek received her B.A. from the University of Arizona and her M.B.A. from San Diego 
State University. 

WILLIAM S. JOHNSON has served as our Vice President and Chief Financial Officer since April 2003.  Prior to joining 
us, Mr. Johnson served as Executive Vice President and Chief Financial Officer for Budget Group, Inc. from August 2000 to 
March 2003.  Before that, Mr. Johnson spent 16 years at BP Amoco in various senior finance and management positions, the 
most recent of which was President of Amoco Fabrics and Fibers Company.  Mr. Johnson received his B.S. in Mechanical 
Engineering from the University of Oklahoma and his M.B.A. from the Harvard Business School. 

DAVID H. LI has served as our Vice President, Asia Pacific Region since June 2008.  Prior to that, Mr. Li served as 
Managing Director of Korea and China since February 2007.  Previously, Mr. Li served as our Global Business Director  
for Tungsten and Advanced Dielectrics from 2005 to February 2007.  Mr. Li held a variety of leadership positions for us in 
operations, sourcing and investor relations between 1998 and 2005.  Prior to joining us, Mr. Li worked for UOP in marketing 
and process engineering.  Mr. Li received a B.S. in Chemical Engineering from Purdue University and an M.B.A. from 
Northwestern University–Kellogg School of Management. 

DANIEL J. PIKE has served as our Vice President of Corporate Development since January 2004 and prior to that was our 
Vice President of Operations from December 1999.  Mr. Pike served as Division Director of Global Operations for Cabot 
Corporation from 1996 to 1999.  Prior to that, Mr. Pike worked for FMC Corporation in various marketing and finance 
positions.  Mr. Pike received his B.S. in Chemical Engineering from the University of Buffalo and his M.B.A. from the 
Wharton School of Business of the University of Pennsylvania.  

STEPHEN R. SMITH has served as our Vice President of Marketing since September 2006, and previously was our  
Vice President of Marketing and Business Management since April 2005 and our Vice President of Sales and Marketing  
from October 2001.  Prior to joining us, Mr. Smith served as Vice President, Sales & Business Development for Buildpoint 
Corporation from 2000 to October 2001.  Prior to that, Mr. Smith spent 17 years at Tyco Electronics Group, formerly known  
as AMP Incorporated, in various management positions.  Mr. Smith earned a B.S. in Industrial Engineering from Grove City 
College and an M.B.A. from Wake Forest University. 

CLIFFORD L. SPIRO has served as Vice President of Research and Development since December 2003.  Prior to joining 
us, Dr. Spiro served as Vice President of Research and Development at Ondeo-Nalco from 2001 through November 2003.  
Prior to that, Dr. Spiro held research and development management and senior technology positions at the General Electric 
Company from 1980 through 2001, the most recent of which was Global Manager–Technology for Business Development.  
Dr. Spiro received his B.S. in Chemistry from Stanford University and his Ph.D. in Chemistry from the California Institute  
of Technology.  Dr. Spiro is a director of Strategic Diagnostic Corporation. 

ADAM F. WEISMAN has served as our Vice President of Business Operations since September 2006, and prior to that  
was our Vice President of Operations.  Before joining us, Mr. Weisman held various engineering and senior operations 
management positions with the General Electric Company from 1988 through 2004, including having served as the General 
Manager of Manufacturing for GE Plastics–Superabrasives, and culminating in serving as the Executive Vice President of 
Operations for GE Railcar Services.  Prior to joining GE, he worked as an engineering team leader and pilot plant manager 
for E.I. Du Pont de Nemours & Company.  Mr. Weisman holds a B.S. in Ceramic Engineering from Alfred University.   

DANIEL S. WOBBY has served as our Vice President of Global Sales since June 2008.  Prior to that, Mr. Wobby served as 
Vice President, Asia Pacific Region since September 2005.  Previously, Mr. Wobby served as Vice President, Greater China 
and Southeast Asia starting in February 2004 and as Corporate Controller and Principal Accounting Officer from 2000 to 
2004.  From 1989 to 2000, Mr. Wobby held various accounting and operations positions with Cabot Corporation culminating 
in serving as Director of Finance.  Mr. Wobby earned a B.S. in Accounting from St. Michael’s College and an M.B.A. from 
the University of Chicago. 

THOMAS S. ROMAN has served as our Corporate Controller and Principal Accounting Officer since February 2004 and 
previously served as our North American Controller.  Prior to joining us in April 2000, Mr. Roman was employed by FMC 
Corporation in various financial reporting, tax and audit positions.  Before that, Mr. Roman worked for Gould Electronics 
and Arthur Andersen LLP.  Mr. Roman is a C.P.A. and earned a B.S. in Accounting from the University of Illinois and an 
M.B.A. from DePaul University’s Kellstadt Graduate School of Business. 

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PART II 

ITEM 5.  MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND 
ISSUER PURCHASES OF EQUITY SECURITIES 

Our common stock has traded publicly under the symbol “CCMP” since our initial public offering in April 2000, 
currently on the NASDAQ Global Select Market, and formerly the NASDAQ National Market.  The following table sets 
forth the range of quarterly high and low closing sales prices for our common stock. 

Fiscal 2008 

Fiscal 2009 

Fiscal 2010 

First Quarter 
Second Quarter 
Third Quarter 
Fourth Quarter 

First Quarter 
Second Quarter 
Third Quarter 
Fourth Quarter 
First Quarter (through October 31, 2009) 

HIGH 

LOW 

46.44 
36.00 
37.64 
42.80 

32.39 
26.96 
31.50 
36.04 
35.47 

35.27 
30.48 
31.24 
31.55 

20.23 
19.01 
24.52 
26.94 
31.98 

As of October 31, 2009, there were approximately 1,048 holders of record of our common stock.  No dividends were 

declared or paid in either fiscal 2009 or fiscal 2008 and we have no current plans to pay cash dividends in the future. 

ISSUER PURCHASES OF EQUITY SECURITIES 

In January 2008, we announced that our Board of Directors had authorized a share repurchase program for up to $75.0 

million of our outstanding common stock.  Shares are repurchased from time to time, depending on market conditions, in 
open market transactions, at management’s discretion.  We fund share repurchases from our existing cash balance.  The 
program, which became effective on the authorization date, may be suspended or terminated at any time, at the Company’s 
discretion.  We view the program as a flexible and effective means to return cash to shareholders.  No shares were 
repurchased under this program during the fiscal quarter or fiscal year ended September 30, 2009. 

Separate from this share repurchase program, a total of 14,425 shares were purchased during fiscal 2009 pursuant to  
the terms of our Second Amended and Restated Cabot Microelectronics Corporation 2000 Equity Incentive Plan (EIP) as 
shares withheld from award recipients to cover payroll taxes on the vesting of shares of restricted stock granted under the 
EIP.  No shares were purchased under the EIP during the fiscal quarter ended September 30, 2009. 

EQUITY COMPENSATION PLAN INFORMATION 

See Part II, Item 12 of this Form 10-K for information regarding shares of common stock that may be issued under the 

Company’s existing equity compensation plans. 

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STOCK PERFORMANCE GRAPH 

The following graph illustrates the cumulative total stockholder return on our common stock during the period from 

September 30, 2004 through September 30, 2009 and compares it with the cumulative total return on the NASDAQ 
Composite Index and the Philadelphia Semiconductor Index.  The comparison assumes $100 was invested on September 30, 
2004 in our common stock and in each of the foregoing indices and assumes reinvestment of dividends, if any.  The 
performance shown is not necessarily indicative of future performance.  See “Risk Factors”, in Part I, Item 1A above. 

COMPARISON OF 5 YEAR CUMULATIVE TOTAL RETURN*
Among Cabot Microelectronics Corporation, The NASDAQ Composite Index
And The PHLX Semiconductor Index

$160

$140

$120

$100

$80

$60

$40

$20

$0

9 / 0 4 12 / 0 4

3 / 0 5

6 / 0 5

9 / 0 5 12 / 0 5

3 / 0 6

6 / 0 6

9 / 0 6 12 / 0 6

3 / 0 7

6 / 0 7

9 / 0 7 12 / 0 7

3 / 0 8

6 / 0 8

9 / 0 8 12 / 0 8

3 / 0 9

6 / 0 9

9 / 0 9

Cabot Microelectronics Corporation

NASDAQ Composite

PHLX Semiconductor

*$100 invested on 9/30/04 in stock or index, including reinvestment of dividends.
Fiscal year ending September 30.

9/04 

12/04 

3/05 

6/05 

9/05 

12/05 

3/06 

6/06 

9/06 

12/06 

3/07 

Cabot Microelectronics Corporation 
NASDAQ Composite 
Philadelphia Semiconductor 

100.00 
100.00 
100.00 

110.54 
114.42 
115.19 

86.57 
105.44 
113.31 

79.97 
108.35 
121.78 

81.05 
113.78 
128.30 

80.80 
117.06 
133.37 

102.34 
124.82 
126.36 

83.61 
116.42 
116.59 

79.50 
121.50 
123.32 

93.63 
130.63 
122.83 

92.44 
131.33 
121.61 

6/07 

9/07 

12/07 

3/08 

6/08 

9/08 

12/08 

3/09 

6/09 

9/09 

Cabot Microelectronics Corporation 
NASDAQ Composite 
Philadelphia Semiconductor 

97.90 
140.48 
138.45 

117.93 
143.37 
140.56 

99.06 
140.35 
132.62 

88.69 
120.46 
114.17 

91.45 
121.34 
118.46 

88.50 
109.15 
98.45 

71.92 
82.86 
74.38 

66.29 
80.72 
80.22 

78.04 
97.22 
90.50 

96.17 
112.55 
109.93 

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ITEM 6.  SELECTED FINANCIAL DATA 

The following selected financial data for each year of the five-year period ended September 30, 2009, has been derived 

from the audited consolidated financial statements.   

The information set forth below is not necessarily indicative of results of future operations and should be read in 

conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations and the 
consolidated financial statements and notes to those statements included in Items 7 and 8 of Part II of this Form 10-K,  
as well as Risk Factors included in Item 1A of Part I of this Form 10-K. 

CABOT MICROELECTRONICS CORPORATION 
SELECTED FINANCIAL DATA—FIVE YEAR SUMMARY 
(Amounts in thousands, except per share amounts) 

Consolidated Statement of Income Data: 
  Revenue 
  Cost of goods sold 
  Gross profit 
  Operating expenses: 

  Research, development and technical 
  Selling and marketing  
  General and administrative  
  Purchased in-process research and development 

  Total operating expenses 

  Operating income 
  Other income, net 

Income before income taxes 

  Provision for income taxes 

  Net income 

Basic earnings per share 

2009 

$291,372  
162,918  
128,454  

48,150 
22,239 
40,632 
1,410 
112,431 
16,023 
599 
16,622 
5,435 

Year Ended September 30, 
2007 

2006 

2008 

$375,069  
200,596  
174,473  

$338,205  
178,224  
159,981  

$320,795  
171,758  
149,037  

49,155 
28,281 
47,595 
— 
125,031 
49,442 
5,448 
54,890 
16,552 

49,970 
24,310 
39,933 
— 
114,213 
45,768 
3,606 
49,374 
15,538 

48,070 
21,115 
34,319 
1,120 
104,624 
44,413 
4,111 
48,524 
15,576 

2005* 

$270,484  
141,282  
129,202  

43,010 
16,989 
25,427 
— 
85,426 
43,776 
2,747 
46,523 
14,050 

$  11,187 

$  38,338 

$  33,836 

$  32,948 

$  32,473 

$      0.48 

$      1.64 

$      1.42 

$      1.36 

$      1.32 

Weighted average basic shares outstanding 

23,079 

23,315  

23,748  

24,228 

24,563 

Diluted earnings per share 

$      0.48 

$      1.64  

$      1.42  

$      1.36 

$      1.32 

Weighted average diluted shares outstanding 

23,096 

23,348  

23,754  

24,228 

24,612 

Cash dividends per share 

$        — 

$        — 

$        — 

$        — 

$        — 

*  We adopted the standards of accounting for share-based payments, effective October 1, 2005.  Consequently, the fiscal year ended September 30, 2005 

had no share-based compensation expense. 

2009 

2008 

As of September 30, 
2007 

2006 

2005 

Consolidated Balance Sheet Data: 
  Current assets 
  Property, plant and equipment, net 
  Other assets 

  Total assets 

  Current liabilities 
  Other long-term liabilities 

  Total liabilities 

  Stockholders’ equity 

  Total liabilities and stockholders’ equity 

$330,592 
115,843 
31,002  

$477,437 

$  37,801 
5,403 
43,204 
434,233 

$477,437 

$310,754 
118,454 
25,921  

$455,129 

$  36,563 
5,362 
41,925 
413,204 

$455,129 

$261,505 
130,176 
20,452  

$412,133 

$  38,833 
5,529  
44,362  
367,771 

$412,133 

$245,807 
135,784 
5,172  

$386,763 

$  35,622 
12,057 
47,679 
339,084 

$386,763 

$316,852 
122,782 
75,510 

$515,144 

$  39,536 
4,879 
44,415 
470,729 

$515,144 

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ITEM 7.  MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF 
OPERATIONS 

The following “Management’s Discussion and Analysis of Financial Condition and Results of Operations”, as well as 
disclosures included elsewhere in this Form 10-K, include “forward-looking statements” within the meaning of the Private 
Securities Litigation Reform Act of 1995.  This Act provides a safe harbor for forward-looking statements to encourage 
companies to provide prospective information about themselves so long as they identify these statements as forward-looking  
and provide meaningful cautionary statements identifying important factors that could cause actual results to differ from the 
projected results.  All statements other than statements of historical fact we make in this Form 10-K are forward-looking.   
In particular, the statements herein regarding future sales and operating results; Company and industry growth, contraction  
or trends; growth or contraction of the markets in which the Company participates; international events or various economic 
factors; product performance; the generation, protection and acquisition of intellectual property, and litigation related to such 
intellectual property; new product introductions; development of new products, technologies and markets; the acquisition of or 
investment in other entities; uses and investment of the Company’s cash balance; the construction of facilities by the Company; 
and statements preceded by, followed by or that include the words “intends”, “estimates”, “plans”, “believes”, “expects”, 
“anticipates”, “should”, “could” or similar expressions, are forward-looking statements.  Forward-looking statements reflect our 
current expectations and are inherently uncertain.  Our actual results may differ significantly from our expectations.  We assume 
no obligation to update this forward-looking information.  The section entitled “Risk Factors” describes some, but not all, of the 
factors that could cause these differences.   

The following discussion and analysis should be read in conjunction with our historical financial statements and the 

notes to those financial statements which are included in Item 8 of Part II of this Form 10-K.  

OVERVIEW  

Cabot Microelectronics Corporation (“Cabot Microelectronics”, “the Company”, “us”, “we”, or “our”) is the leading 
supplier of high-performance polishing slurries used in the manufacture of advanced integrated circuit (IC) devices within the 
semiconductor industry, in a process called chemical mechanical planarization (CMP).  CMP is a polishing process used by 
IC device manufacturers to planarize or flatten many of the multiple layers of material that are deposited upon silicon wafers 
in the production of advanced ICs.  Our products play a critical role in the production of the most advanced IC devices, 
thereby enabling our customers to produce smaller, faster and more complex IC devices with fewer defects.  Demand for our 
CMP products is primarily driven by the number of wafers processed by semiconductor manufacturers, the first 
manufacturing step of which is referred to as a “wafer start”.   

  We operate predominantly in one industry segment–the development, manufacture and sale of CMP consumables.   
We develop, produce and sell CMP slurries for polishing many of the conducting and insulating materials used in IC devices, 
and also for polishing the disk substrates and magnetic heads used in hard disk drives.  We also develop, manufacture and 
sell CMP polishing pads, which are used in conjunction with slurries in the CMP process.  We also continue to pursue our 
Engineered Surface Finishes (ESF) business where we believe we can leverage our expertise in CMP consumables for the 
semiconductor industry to develop products for demanding polishing applications in other industries. 

The global economic recession had a significant impact on our business in fiscal 2009.  We first began to see the adverse 
impact of the recession in our fourth quarter of fiscal 2008 as our semiconductor customers reduced their production, and the 
downturn in our business continued through the first half of fiscal 2009.  We believe a combination of improved underlying 
demand and inventory replenishment within the semiconductor industry positively impacted demand for our products during 
the second half of fiscal 2009 as our revenues improved significantly from the revenues recorded in the first half of the fiscal 
year.  However, we remain cautious regarding future demand trends over the near term as we are entering a calendar period 
of typically softer seasonal demand within the semiconductor industry.  Since we cannot predict the exact timing and 
magnitude of an economic recovery, we plan to continue to manage our business to maintain flexibility and respond quickly 
to changing trends.  There are many other factors that make it difficult for us to predict future revenue trends for our business, 
including: the duration of the global economic downturn and the timing and pace of a recovery; the cyclical nature of the 
semiconductor industry; the short order to delivery time for our products and the associated lack of visibility to future 
customer orders; quarter to quarter changes in our revenue regardless of industry strength; and potential future acquisitions 
by us. 

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In February 2009, we acquired Epoch Material Co., Ltd. (Epoch), a consolidated subsidiary of Eternal Chemical Co., 
Ltd. (Eternal).  Epoch is a Taiwan-based company specializing in the development, manufacture and sale of copper CMP 
slurries and CMP cleaning solutions to the semiconductor industry, and color filter slurries to the liquid crystal display (LCD) 
industry.  Epoch has a strong presence in Taiwan, which we believe is the largest geographic market for CMP consumables, 
strong customer relationships in the Asia Pacific region, a significant fixed asset base and strong technical capabilities.  
Under the share purchase agreement, we paid $59.4 million on the closing date of February 27, 2009 to obtain 90% of 
Epoch’s stock and we paid $0.7 million in transaction costs.  We expect to pay an additional $6.6 million to Eternal in 
August 2010 to acquire the remaining 10% ownership interest and we have placed the $6.6 million in an escrow account in 
Taiwan to be held for this purpose until the payment date.  During this interim period, Eternal continues to hold the 
remaining 10% ownership interest in Epoch.  However, Eternal has waived rights to any interest in the earnings of Epoch 
during the interim period, including any associated dividends.  Consequently, we have recorded a $6.6 million current 
liability in accrued expenses and other current liabilities on our Consolidated Balance Sheet at September 30, 2009, rather 
than recording a minority interest in Epoch, and we have recorded 100% of Epoch’s results of operations from February 27, 
2009 through the end of our fiscal year in our Consolidated Statement of Income.  See Note 3 of the Notes to the 
Consolidated Financial Statements for a complete discussion of this acquisition. 

Despite the adverse impact of the global economic recession in fiscal 2009 on our slurry products for semiconductor 
applications, revenue from our CMP polishing pads grew by 17% from fiscal 2008.  Our Six Sigma efforts have enabled us  
to improve the manufacturing yields in our pad business each quarter since we began high-volume manufacturing in the 
fourth quarter of fiscal 2007.  We ended fiscal 2009 selling pads to over 20 customers for over 30 applications, and we have 
more than 30 other potential applications in various stages of testing, evaluation and qualification by our customers. 

Revenue for fiscal 2009 was $291.4 million, which represented a decrease of 22.3% from the $375.1 million reported  

for fiscal 2008.  We believe the decrease in revenue from fiscal 2008 reflects the adverse impact of the global economic 
recession.  Revenue for the first half of fiscal 2009 was $108.4 million, representing a decrease of over 42% from the  
$187.9 million of revenue during the first half of fiscal 2008.  Revenue for the second half of fiscal 2009 was $183.0 million, 
representing a 69% increase from the first half of fiscal 2009 and a 2% decrease from the $187.2 million of revenue in the 
second half of fiscal 2008.  We believe that the significant increase in revenue during the second half of fiscal 2009 compared 
to the first half is primarily due to improvement in underlying demand for semiconductors, inventory replenishment, as noted 
above, as well as traditional seasonal industry strength.  In addition, we generated $13.0 million in revenue from Epoch 
products between the date of acquisition and September 30, 2009. 

Gross profit expressed as a percentage of revenue for fiscal 2009 was 44.1%, which represents a decrease from the 
46.5% reported for fiscal 2008.  The decrease in our gross profit margin primarily represents the underutilization of our 
manufacturing capacity on the significant decrease in sales driven by the global economic recession.  We continue to make 
improvements in our manufacturing processes and in the quality of our products through our Six Sigma efforts to improve 
our margins and better serve our customers.  Due the continuing uncertainty in the U.S. and global economy, we are not 
providing guidance on gross profit margin for fiscal 2010. 

Operating expenses of $112.4 million, which include research, development and technical, selling and marketing, and 
general and administrative expenses, decreased 10.1%, or $12.6 million, from the $125.0 million reported for fiscal 2008.  
The decrease was primarily due to lower staffing-related costs, lower professional fees, including fees related to the 
enforcement of our intellectual property, and lower travel expenses.  These cost savings were partially offset by incremental 
expenses related to Epoch, including a $1.4 million write-off of in-process research and development expenses required by 
purchase accounting rules.  The reduction in operating expenses was positively impacted by the focused cost reduction 
actions that we implemented during the first half of fiscal 2009.  In fiscal 2010, we expect our full year operating expenses  
to be in the range of $120 million to $125 million, which will include a full year of Epoch expenses and the end of certain 
temporary cost saving initiatives that we implemented in fiscal 2009. 

Diluted earnings per share of $0.48 in fiscal 2009 decreased 70.5%, or $1.16, from $1.64 reported in fiscal 2008 as a 
result of the factors discussed above.  The Epoch acquisition had an accretive effect on our earnings per share in fiscal 2009. 

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CRITICAL ACCOUNTING POLICIES AND ESTIMATES  

This “Management’s Discussion and Analysis of Financial Condition and Results of Operations”, as well as disclosures 

included elsewhere in this Form 10-K, are based upon our audited consolidated financial statements, which have been 
prepared in accordance with accounting principles generally accepted in the United States.  The preparation of these financial 
statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and 
expenses, and related disclosure of contingencies.  On an ongoing basis, we evaluate the estimates used, including those 
related to bad debt expense, warranty obligations, inventory valuation, valuation and classification of auction rate securities, 
impairment of long-lived assets and investments, business combinations, goodwill, other intangible assets, share-based 
compensation, income taxes and contingencies.  We base our estimates on historical experience, current conditions and on 
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, as well 
as for identifying and assessing our accounting treatment with respect to commitments and contingencies.  Actual results may 
differ from these estimates under different assumptions or conditions.  We believe the following critical accounting policies 
involve significant judgments and estimates used in the preparation of our consolidated financial statements. 

ALLOWANCE FOR DOUBTFUL ACCOUNTS 

  We maintain an allowance for doubtful accounts for estimated losses resulting from the potential inability of our 
customers to make required payments.  Our allowance for doubtful accounts is based on historical collection experience, 
adjusted for any specific known conditions or circumstances.  While historical experience may provide a reasonable estimate 
of uncollectible accounts, actual results may differ from what was recorded.  The global economic recession has had adverse 
effects on our ability to collect accounts receivable from some of our customers.  The recession also caused a small number 
of our customers to file for bankruptcy or insolvency.  We recorded a $0.9 million increase in our allowance for doubtful 
accounts during fiscal 2009 to account for these bankruptcies and the increased risk regarding customer collections due to  
the continued uncertainty in the global economy.  We will continue to monitor the financial solvency of our customers and,  
if the global economic recession continues, we may have to record additional increases to our allowances for doubtful 
accounts.  As of September 30, 2009, our allowance for doubtful accounts represented 2.3% of gross accounts receivable.   
If we had increased our estimate of bad debts to 3.3% of gross accounts receivable, our general and administrative expenses 
would have increased by $0.5 million. 

WARRANTY RESERVE 

  We maintain a warranty reserve that reflects management’s best estimate of the cost to replace product that does not 
meet customers’ specifications and performance requirements, and costs related to such replacement.  The warranty reserve is 
based upon a historical product replacement rate, adjusted for any specific known conditions or circumstances.  Should actual 
warranty costs differ substantially from our estimates, revisions to the estimated warranty liability may be required.  As of 
September 30, 2009, our warranty reserve represented 0.4% of the current quarter revenue.  If we had increased our warranty 
reserve estimate to 1.4% of the current quarter revenue, our cost of goods sold would have increased by $1.0 million. 

INVENTORY VALUATION 

  We value inventory at the lower of cost or market and write down the value of inventory for estimated obsolescence  
or if inventory is deemed unmarketable.  An inventory reserve is maintained based upon a historical percentage of actual 
inventories written off applied against the inventory value at the end of the period, adjusted for known conditions and 
circumstances.  We exercise judgment in estimating the amount of inventory that is obsolete.  Should actual product 
marketability and fitness for use be affected by conditions that are different from those projected by management, revisions  
to the estimated inventory reserve may be required.  If we had increased our reserve for obsolete inventory at September 30, 
2009 by 10%, our cost of goods sold would have increased by $0.2 million. 

VALUATION AND CLASSIFICATION OF AUCTION RATE SECURITIES 

  As of September 30, 2009, we owned two auction rate securities (ARS) with an estimated fair value of $8.1 million  
($8.3 million par value) which are classified as other long-term assets on our Consolidated Balance Sheet.  In general, ARS 
investments are securities with long-term nominal maturities for which interest rates are reset through a Dutch auction every 
seven to 35 days.  Historically, these periodic auctions provided a liquid market for these securities.  General uncertainties in 
the global credit markets during 2008 caused widespread ARS auction failures as the number of securities submitted for sale 
exceeded the number of securities buyers were willing to purchase.  As a result, the short-term liquidity of the ARS market 
has been adversely affected since then. 

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  As discussed in Notes 4 and 8 of the Notes to the Consolidated Financial Statements, we have recorded a temporary 
impairment of $0.2 million, net of tax, in the value of one of our ARS in other comprehensive income.  The calculation  
of fair value and the balance sheet classification for our ARS requires critical judgments and estimates by management 
including an appropriate discount rate and the probability that a security may be monetized through a future successful 
auction, of a refinancing of the underlying debt, or of payments made by the bond insurance carrier.  In fiscal 2009, we 
adopted new accounting pronouncements regarding the classification and valuation of financial instruments.  These 
pronouncements discuss the recognition and presentation of other-than-temporary impairments and the determination of  
fair value of financial instruments when the volume of activity significantly drops.  An other-than-temporary impairment 
must be recorded when a credit loss exists; that is when the present value of the expected cash flows from a debt security is 
less than the amortized cost basis of the security.  We performed two discounted cash flow analyses, one using a discount  
rate based on a market index comprised of tax exempt variable rate demand obligations and one using a discount rate based 
on the LIBOR swap curve, and we applied a risk factor to reflect current liquidity issues in the ARS market.  We then 
assigned probabilities of holding each security for less than or equal to one year, five years, and to maturity to calculate a  
fair value for each security.  We also considered the strength of the insurance backing and the probability of failure by the 
insurance carrier in the case of default by the issuer of the securities.  The impairment we have maintained is considered 
temporary as it relates to the loss of liquidity in the ARS market and does not represent a credit loss.  We do not intend to sell 
the securities at a loss and we believe we will not be required to sell the securities at a loss in the future.  If auctions involving 
our remaining ARS continue to fail, if issuers of our ARS are unable to refinance the underlying securities, if the issuing 
municipalities are unable to pay their debt obligations and the bond insurance fails, or if credit ratings decline or other 
adverse developments occur in the credit markets, we may not be able to monetize our remaining securities in the near term 
and may be required to further adjust the carrying value of these instruments through an impairment charge that may be 
deemed other-than-temporary. 

IMPAIRMENT OF LONG-LIVED ASSETS AND INVESTMENTS 

  We assess the recoverability of the carrying value of long-lived assets, including finite lived intangible assets, whenever 
events or changes in circumstances indicate that the assets may be impaired.  We must exercise judgment in assessing 
whether an event of impairment has occurred.  For purposes of recognition and measurement of an impairment loss, long-
lived assets are grouped with other assets and liabilities at the lowest level for which identifiable cash flows are largely 
independent of the cash flows of other assets and liabilities.  We must exercise judgment in this grouping.  If the sum of the 
undiscounted future cash flows expected to result from the identified asset group is less than the carrying value of the asset 
group, an impairment provision may be required.  The amount of the impairment to be recognized is calculated by 
subtracting the fair value of the asset group from the net book value of the asset group.  Determining future cash flows and 
estimating fair values require significant judgment and are highly susceptible to change from period to period because they 
require management to make assumptions about future sales and cost of sales generally over a long-term period.  As a result 
of assessments performed during fiscal 2009, we recorded $1.2 million in impairment expense, primarily related to the write-
off of certain research and development equipment.  See Note 6 of the Notes to the Consolidated Financial Statements for 
more information on this write-off. 

  We evaluate the estimated fair value of investments annually or more frequently if indicators of potential impairment 
exist, to determine if an other-than-temporary impairment in the value of the investment has taken place.   

BUSINESS COMBINATIONS  

  We have accounted for all business combinations under the purchase method of accounting.  As discussed in more detail 
in Note 2 of the Notes to the Consolidated Financial Statements, we will be required to adopt new accounting standards for 
business combinations commencing after October 1, 2009.  We currently allocate the purchase price of acquired entities to 
the tangible and intangible assets acquired, liabilities assumed, and in-process research and development (IPR&D) based on 
their estimated fair values.  We engage independent third-party appraisal firms to assist us in determining the fair values of 
assets and liabilities acquired.  This valuation requires management to make significant estimates and assumptions, especially 
with respect to long-lived and intangible assets.  Contingent consideration is not recorded as a liability until the outcome of 
the contingency is determinable.  Goodwill represents the excess of the purchase price over the fair value of net assets and 
amounts assigned to identifiable intangible assets.  Purchased IPR&D, for which technological feasibility has not yet been 
established and no future alternative uses exist, is expensed immediately. 

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Critical estimates in valuing certain of the intangible assets include but are not limited to: future expected cash flows 

related to acquired developed technologies and patents and assumptions about the period of time the technologies will 
continue to be used in the Company’s product portfolio; expected costs to develop the IPR&D into commercially viable 
products and estimated cash flows from the products when completed; and discount rates.  Management’s estimates of value  
are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable.  Assumptions 
may be incomplete or inaccurate, and unanticipated events and circumstances may occur which may cause actual realized 
values to be different from management’s estimates. 

GOODWILL AND INTANGIBLE ASSETS 

Purchased intangible assets with finite lives are amortized over their estimated useful lives and are evaluated for 

impairment using a process similar to that used to evaluate other long-lived assets.  Goodwill and indefinite lived intangible 
assets are not amortized and are tested annually in the fourth fiscal quarter or more frequently if indicators of potential 
impairment exist, using a fair-value-based approach. 

The recoverability of goodwill is measured at the reporting unit level, which is defined as either an operating segment  

or one level below an operating segment.  We have consistently determined the fair value of our reporting units using a 
discounted cash flow analysis of our projected future results.  The recoverability of indefinite lived intangible assets is 
measured using the royalty savings method.  Factors requiring significant judgment include assumptions related to future 
growth rates, discount factors, royalty rates and tax rates, among others.  Changes in economic and operating conditions that 
occur after the annual impairment analysis or an interim impairment analysis that impact these assumptions may result in 
future impairment charges. 

Our wholly-owned subsidiary, QED Technologies International, Inc. (QED), was impacted by the global recession more 

significantly than other areas of our business based on the decline in revenue from fiscal 2008.  As a result, we performed 
impairment reviews for QED throughout the fiscal year.  QED has goodwill of $5.0 million, indefinite lived intangible assets 
of $1.2 million and intangible assets subject to amortization of $3.6 million at September 30, 2009.  Our annual impairment 
analysis for QED in the fourth quarter of fiscal 2009 included current estimates of future cash flows.  Management combines 
current projections of market and economic data with estimates of our mix of products sold, production costs and operating 
expenses.  We discounted the resulting projected cash flows over a range of discount rates between 14% and 16%, based 
upon an analysis of weighted average cost of capital of peer companies of QED.  Although we determined that the goodwill 
and intangible assets of QED were not impaired, a hypothetical 10% decline in our cash flow projections would have resulted 
in the calculated fair value of QED being less than its carrying value.  This would have required us to complete additional 
goodwill impairment testing and may have resulted in an impairment.   

As a result of the review performed in the fourth quarter of fiscal 2009, we determined that there was no impairment of 

our goodwill and intangible assets as of September 30, 2009.   

SHARE-BASED COMPENSATION 

  We record share-based compensation expense for all share-based awards, including stock option grants, restricted stock 
and restricted stock unit awards and employee stock purchases.  We calculate share-based compensation expense using the 
straight-line approach based on awards expected to ultimately vest, which requires the use of an estimated forfeiture rate.  
Our estimated forfeiture rate is primarily based on historical experience, but may be revised in future periods if actual 
forfeitures differ from the estimate.  We use the Black-Scholes option-pricing model to estimate the grant date fair value of 
our stock options and employee stock purchases.  This model requires the input of highly subjective assumptions, including 
the price volatility of the underlying stock, the expected term of our stock options and the risk-free interest rate.  A small 
change in the underlying assumptions can have a relatively large effect on the estimated valuation.  We estimate the expected 
volatility of our stock based on a combination of our stock’s historical volatility and the implied volatilities from actively-
traded options on our stock.  We calculate the expected term of our stock options using the simplified method, due to our 
limited amount of historical option exercise data, and we add a slight premium to this expected term for employees who meet 
the definition of retirement eligible pursuant to terms of their award agreements during the contractual term.  The simplified 
method uses an average of the vesting term and the contractual term of the option to calculate the expected term.  The risk-
free rate is derived from the U.S. Treasury yield curve in effect at the time of grant. 

The fair value of our restricted stock and restricted stock unit awards represents the closing price of our common stock 

on the date of grant. 

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ACCOUNTING FOR INCOME TAXES 

  We recognize deferred tax assets and liabilities using enacted tax rates for the effect of temporary differences between 
the book and tax bases of recorded assets and liabilities.  Deferred tax assets must be reduced by a valuation allowance if it  
is more likely than not that a portion of the deferred tax asset will not be realized.  We have determined that it is more likely 
than not that our future taxable income will be sufficient to realize our deferred tax assets.  Significant changes to the 
estimates and judgments that support the calculation of deferred tax assets and liabilities may result in an increase or decrease 
to our tax provision in a subsequent period. 

On October 1, 2007, we adopted the standards for the accounting for uncertain tax positions.  We apply a “more-likely-
than-not” threshold for the recognition and derecognition of uncertain tax positions.  The evaluation of uncertain tax positions 
is based on factors including, but not limited to, changes in tax law, effectively settled issues under audit, new audit activity 
and changes in facts or circumstances surrounding a tax position.  We evaluate these tax positions on a quarterly basis. 

COMMITMENTS AND CONTINGENCIES 

  We have entered into certain unconditional purchase obligations, which include noncancelable purchase commitments 
and take-or-pay arrangements with suppliers.  We review our agreements on a quarterly basis and make an assessment of  
the likelihood of a shortfall in purchases and determine if it is necessary to record a liability.  In addition, we are subject to 
the possibility of various loss contingencies arising in the ordinary course of business such as a legal proceeding or claim.  
An estimated loss contingency is accrued when it is probable that an asset has been impaired or a liability has been incurred 
and the amount of the loss can be reasonably estimated.  We regularly evaluate current information available to us to 
determine whether such accruals should be adjusted and whether new accruals are required. 

EFFECTS OF RECENT ACCOUNTING PRONOUNCEMENTS 

See Note 2 to the Consolidated Financial Statements for a description of recent accounting pronouncements including the 

expected dates of adoption and effects on our results of operations, financial position and cash flows. 

RESULTS OF OPERATIONS 

The following table sets forth, for the periods indicated, the percentage of revenue of certain line items included in our 

historical statements of income: 

Year Ended September 30, 
2009 
2007 
2008 

100.0%  100.0%  100.0% 
52.7    
53.5    
47.3    
46.5    

55.9    
44.1    

16.5    
7.6    
14.0    

13.1    
7.5    
12.7    

14.8    
7.2    
11.8    
0.5       —       —      

5.5    
0.2    
5.7    
1.9      

13.2    
1.4    
14.6    
4.4      

13.5    
1.1    
14.6    
4.6      

3.8% 

10.2% 

10.0% 

Revenue 
Cost of goods sold 
Gross profit   

Research, development and technical 
Selling and marketing 
General and administrative 
Purchased in-process research and development  

Operating income 
Other income, net 
Income before income taxes 
Provision for income taxes 

Net income 

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YEAR ENDED SEPTEMBER 30, 2009, VERSUS YEAR ENDED SEPTEMBER 30, 2008 

REVENUE 

Revenue was $291.4 million in fiscal 2009, which represented a decrease of 22.3%, or $83.7 million, from fiscal 2008.  

Of this decrease, $97.7 million was due to decreased sales volume driven by the significant weakening of demand for our 
products due to the global economic recession that we experienced during the first half of fiscal 2009, and $8.5 million due  
Sto product mix.  These decreases in revenue were partially offset by $13.0 million in revenue from Epoch products, a $5.7 
million revenue increase due to the effect of foreign exchange rate changes and $3.8 million due to a higher weighted-
average selling price for our CMP consumable products.  Despite the negative effects of the global economic recession on 
our slurry products for semiconductor applications and on our ESF business, our revenue from CMP polishing pads and 
slurries for data storage applications increased from the prior year.  We believe a combination of improved underlying 
demand and inventory replenishment within the semiconductor industry positively impacted demand for our products during 
the second half of fiscal 2009 as our revenues improved significantly from the revenues recorded in the first half of the fiscal 
year.  However, we remain cautious regarding future demand trends over the near term as we are entering a calendar period 
of typically lower seasonal demand within the semiconductor industry and we cannot predict the exact timing and magnitude 
of an economic recovery. 

COST OF GOODS SOLD 

Total cost of goods sold was $162.9 million in fiscal 2009, which represented a decrease of 18.8%, or $37.7 million, 

from fiscal 2008.  The decrease in cost of goods sold was primarily due to $53.2 million from decreased sales volume due  
to the global economic recession, $9.8 million from lower fixed manufacturing costs and $5.9 million due to higher 
manufacturing yields in our CMP slurry and pad production.  These decreases were partially offset by a $16.0 million 
increase due to a higher-cost product mix, a $9.2 million increase due to lower utilization of our manufacturing capacity  
on the decreased level of sales, a $4.6 million increase due to the effect of foreign exchange rate changes and a $2.0 million 
increase in certain other manufacturing variances.   

  We implemented a number of cost saving initiatives during the first half of fiscal 2009.  For example, we shortened  
work schedules in our manufacturing operations on a global basis to more closely match production with demand, but we 
maintained the flexibility to increase our production levels to meet the increased customer demand for our products that  
we experienced during the second half of fiscal 2009.  Given the continued uncertainty in the global economic and industry 
environments, we plan to continue to manage our business to maintain flexibility and to respond quickly to changing 
economic trends. 

  Metal oxides, such as silica and alumina, are significant raw materials that we use in many of our CMP slurries.  In an 
effort to mitigate our risk to rising raw material costs and to increase supply assurance and quality performance requirements, 
we have entered into multi-year supply agreements with a number of suppliers.  For more financial information about our 
supply contracts, see “Tabular Disclosure of Contractual Obligations” included in Item 7 of Part II of this Form 10-K. 

Our need for additional quantities or different kinds of key raw materials in the future has required, and will continue  
require, that we enter into new supply arrangements with third parties.  Future arrangements may result in costs which are 
different from those in the existing agreements.  In addition, energy costs may also impact the cost of raw materials, 
packaging, freight and labor costs.  We also expect to continue to invest in our operations excellence initiative to improve 
product quality, reduce variability and improve product yields in our manufacturing process. 

GROSS PROFIT 

Our gross profit as a percentage of revenue was 44.1% in fiscal 2009 as compared to 46.5% for fiscal 2008.  The decrease  
in gross profit expressed as a percentage of revenue was primarily due to the underutilization of our manufacturing capacity on 
the significantly lower level of sales and a higher-cost product mix, partially offset by lower fixed manufacturing costs and 
favorable production yields.  Due to continued uncertainty in the global economic and industry environments, we are not 
providing guidance on gross profit margin for fiscal 2010.  

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RESEARCH, DEVELOPMENT AND TECHNICAL 

Total research, development and technical expenses were $48.2 million in fiscal 2009, which represented a decrease of 
2.0%, or $1.0 million, from fiscal 2008.  The decrease was primarily related to $1.7 million in lower staffing-related costs, $0.7 
million in lower depreciation expense and $0.4 million in lower travel-related costs.  These cost decreases were partially offset 
by $1.2 million in pre-tax impairments recorded in fiscal 2009 on certain research and development equipment and $0.4 million 
in higher expenses for laboratory supplies.  

Our research, development and technical efforts are focused on the following main areas:  

•  Research related to fundamental CMP technology;  
•  Development and formulation of new and enhanced CMP consumable products, including collaborating on joint 

development projects with our customers;  

•  Process development to support rapid and effective commercialization of new products; 
•  Technical support of CMP products in our customers’ manufacturing facilities; and  
•  Evaluation of new polishing and metrology applications outside of the semiconductor industry. 

SELLING AND MARKETING 

Selling and marketing expenses were $22.2 million in fiscal 2009, which represented a decrease of 21.4%, or $6.0 million, 

from fiscal 2008.  The decrease was primarily due to $3.9 million in lower staffing related costs, $1.0 million in lower travel-
related costs, $0.3 million in lower advertising and trade show costs and $0.3 million in lower professional fees.   

GENERAL AND ADMINISTRATIVE 

General and administrative expenses were $40.6 million in fiscal 2009, which represented a decrease of 14.6%, or $7.0 
million, from fiscal 2008.  The decrease resulted primarily from $4.0 million in lower staffing-related costs, primarily related to 
our annual bonus program and lower share-based compensation expense, and $3.7 million in lower professional fees, including 
costs to enforce our intellectual property.  These cost savings were partially offset by a $0.9 million increase in our allowance 
for doubtful accounts due to customer bankruptcies and increased risks relating to customer collections due to the continued 
uncertainty in the global economy.  See Part I, Item 3 entitled “Legal Proceedings” and Note 17 of the Notes to the 
Consolidated Financial Statements for more information on the enforcement of our intellectual property. 

PURCHASED IN-PROCESS RESEARCH AND DEVELOPMENT 

Purchased in-process research and development (IPR&D) expense was $1.4 million in fiscal 2009, related to the acquisition 

of Epoch in the second quarter of fiscal 2009.  We did not make any acquisitions in fiscal 2008. 

OTHER INCOME, NET  

Other income was $0.6 million in fiscal 2009, which represented a decrease of 89.0%, or $4.9 million, from fiscal 2008.  

The decrease in other income was primarily due to $4.5 million in lower interest income resulting from lower interest rates on 
our lower average balances of cash and short-term investments.  We monetized the majority of our short-term investments in 
ARS during fiscal 2008 and reinvested these funds into money market investments which earn interest at lower rates.  See Notes 
4 and 8 of the Notes to the Consolidated Financial Statements for more information on our ARS. 

PROVISION FOR INCOME TAXES 

Our effective income tax rate was 32.7% in fiscal 2009 compared to 30.2% in fiscal 2008.  The increase in the effective tax 
rate in fiscal 2009 was primarily due to increased tax expense related to share-based compensation and a decrease in tax-exempt 
interest income, partially offset by increased research and experimentation tax credits.   

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NET INCOME 

Net income was $11.2 million in fiscal 2009, which represented a decrease of 70.8%, or $27.2 million, from fiscal 2008 as a 

result of the factors discussed above.  The acquisition of Epoch was accretive to earnings in fiscal 2009. 

YEAR ENDED SEPTEMBER 30, 2008, VERSUS YEAR ENDED SEPTEMBER 30, 2007 

REVENUE 

Revenue was $375.1 million in fiscal 2008, which represented an increase of 10.9%, or $36.9 million, from fiscal 2007.  

Of this increase, $17.2 million was due to increased sales volume including increased contribution from our polishing pad 
business, $15.2 million was due to a higher weighted average selling price for our CMP consumable products, resulting from 
a higher-priced product mix, and $4.5 million was due to the effect of foreign exchange rate changes.  Our polishing pad 
business represented $14.6 million of the revenue growth in fiscal 2008 as we won new business by gaining additional 
customer adoptions of our pads. 

COST OF GOODS SOLD 

Total cost of goods sold was $200.6 million in fiscal 2008, which represented an increase of 12.6%, or $22.4 million, 

from fiscal 2007.  Of this increase, $9.1 million was due to increased sales volume, $9.0 million was due to increased fixed 
manufacturing costs, primarily in our pad business, $5.3 million was due to lower manufacturing yields, particularly in our 
pad business, $5.1 million was due to the effects of foreign exchange rate changes, $2.2 million was due to certain other 
manufacturing variances and $1.5 million was due to increased freight, packaging and other costs.  These increases were 
partially offset by a $7.5 million benefit of higher utilization of our manufacturing capacity on the increased sales volume  
and by a $2.3 million benefit of a lower-cost product mix.  

GROSS PROFIT 

Our gross profit as a percentage of revenue was 46.5% in fiscal 2008 as compared to 47.3% for fiscal 2007.  The decrease  

in gross profit expressed as a percentage of revenue was primarily due to higher fixed production costs and lower manufacturing 
yields, both primarily associated with our pad business, and higher manufacturing variances partially offset by a favorable 
product mix and higher utilization of our manufacturing capacity on the increased volume of sales in fiscal 2008.  The 
manufacturing yields in our pad business improved over the course of fiscal 2008, and the yields in this business may 
continue to fluctuate as we optimize our manufacturing process. 

RESEARCH, DEVELOPMENT AND TECHNICAL 

Total research, development and technical expenses were $49.2 million in fiscal 2008, which represented a decrease of 
1.6%, or $0.8 million, from fiscal 2007.  The decrease was primarily due to $0.7 million in lower clean room materials and 
laboratory supplies and $0.5 million in lower professional fees partially offset by $0.2 million in higher staffing related costs  
and $0.2 million in increased depreciation expense.  

SELLING AND MARKETING 

Selling and marketing expenses were $28.3 million in fiscal 2008, which represented an increase of 16.3%, or $4.0 million, 
from fiscal 2007.  The increase was primarily due to $2.3 million in higher staffing related costs, including employee separation 
costs, $0.6 million in increased professional fees, $0.3 million in higher travel related costs and $0.3 million in higher 
depreciation expense.   

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GENERAL AND ADMINISTRATIVE 

General and administrative expenses were $47.6 million in fiscal 2008, which represented an increase of 19.2%, or $7.7 

million, from fiscal 2007.  The increase resulted primarily from $5.3 million in higher professional fees, including costs to 
enforce our intellectual property, and $2.3 million in higher staffing related costs.   

OTHER INCOME, NET  

Other income was $5.4 million in fiscal 2008 compared to $3.6 million in fiscal 2007.  The increase was primarily due to 
the absence of a $2.1 million pre-tax impairment of our equity investment in NanoProducts Corporation (NPC) and the absence 
of $0.4 million of other expense related to our investment in NPC.  This increase was partially offset by a $0.6 million decrease 
in interest income as we monetized the majority of our short-term investments in ARS during fiscal 2008 and reinvested these 
funds into money market investments which earn interest at lower rates.  See Notes 4 and 8 of the Notes to the Consolidated 
Financial Statements for more information on our ARS. 

PROVISION FOR INCOME TAXES 

Our effective income tax rate was 30.2% in fiscal 2008 compared to 31.5% in fiscal 2007.  The decrease in the effective tax 

rate in fiscal 2008 was primarily due to increased research and experimentation tax credits and reduced tax expense related to 
share-based compensation, partially offset by lower tax-exempt interest income. 

NET INCOME 

Net income was $38.3 million in fiscal 2008, which represented an increase of 13.3%, or $4.5 million, from fiscal 2007 as a 

result of the factors discussed above. 

LIQUIDITY AND CAPITAL RESOURCES 

  We had cash flows from operating activities of $44.7 million in fiscal 2009, $70.8 million in fiscal 2008 and $64.6 
million in fiscal 2007.  Our cash provided by operating activities in fiscal 2009 originated from $11.2 million in net income and 
$37.5 million in non-cash items, partially offset by a $4.0 million decrease in cash flow due to a net increase in working capital.  
The decrease in cash from operations in fiscal 2009 from fiscal 2008 was primarily due to decreased net income in fiscal 2009 
due to the global economic recession, increased accounts receivable due to substantial revenue growth in the second half of 
fiscal 2009 and the timing of accounts payable and accrued liability payments, including the payment of our annual bonus 
related to fiscal 2008.  These were partially offset by a decrease in our inventory levels in fiscal 2009 and a decrease in cash  
used for prepaid expenses and other assets. 

  We used $69.0 million in investing activities in fiscal 2009, representing $60.5 million used for our acquisition of  
Epoch, net of $6.2 million in cash acquired, and $8.5 million in purchases of property, plant and equipment.  Cash flows 
provided by investing activities in fiscal 2008 were $130.3 million.  Net sales of short-term investments were $149.5 million  
as we monetized the majority of our ARS during fiscal 2008 (as discussed below).  This cash inflow was partially offset by 
$19.2 million in cash used for purchases of property, plant and equipment primarily for the purchase and installation of a 300-
millimeter polishing tool and related metrology equipment for our Asia Pacific technology center and building improvements 
and equipment to increase our pad production capabilities.  In fiscal 2007, cash used in investing activities was $62.3 million.  
We used $47.0 million for net purchases of short-term investments.  Purchases of property, plant and equipment, including  
the expansion of our pad manufacturing capabilities in the U.S. and Taiwan as well as purchases for QED, were $10.0 million.  
We also used $3.0 million to acquire a license of patents and we paid $2.5 million for the earnout payment to the prior owners  
of QED, related to its revenue performance during the 12 months following our acquisition.  See Note 3 and Note 7 of the Notes 
to the Consolidated Financial Statements for more information on business combinations and intangible assets.  We estimate 
that our total capital expenditures in fiscal 2010 will be approximately $13.0 million.  

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In fiscal 2009, cash flows provided by financing activities were $0.7 million.  We received $2.2 million from the 

issuance of common stock related to the exercise of stock options under our Second Amended and Restated Cabot 
Microelectronics Corporation 2000 Equity Incentive Plan (EIP), as amended and restated September 23, 2008, and shares 
issued under our Cabot Microelectronics 2007 Employee Stock Purchase Plan (Employee Stock Purchase Plan), as amended 
and restated January 19, 2009.  These cash inflows were partially offset by $1.1 million in principal payments on capital 
leases and $0.3 million in repurchases of common stock pursuant to the terms of our EIP for shares withheld to cover payroll 
taxes on the vesting of restricted stock granted under the EIP.  In fiscal 2008, cash flows used in financing activities were 
$35.2 million.  We used $39.0 million to repurchase common stock under our share repurchase programs and we made $1.1 
million in principal payments under capital lease obligations.  These cash outflows were partially offset by $4.9 million 
received from the issuance of common stock related to the exercise of stock options and shares issued under our 2007 
Employee Stock Purchase Plan.  In fiscal 2007, cash flows used in financing activities were $3.2 million.  This resulted from 
$10.0 million in purchases of common stock under our share repurchase program and $1.0 million in principal payments 
under capital lease obligations, partially offset by $7.8 million in net proceeds from the issuance of stock, primarily from the 
exercise of stock options.   

In January 2008, the Board of Directors authorized a share repurchase program for up to $75.0 million of our outstanding 

common stock.  Shares are repurchased from time to time, depending on market conditions, in open market transactions, at 
management’s discretion.  We fund share repurchases from our existing cash balance.  We view the program as a flexible  
and effective means to return cash to stockholders.  The program became effective on the authorization date and may be 
suspended or terminated at any time, at the Company’s discretion.  No shares were repurchased under this program during 
fiscal 2009.  There was $50.0 million remaining on this authorization as of September 30, 2009. 

  We have an unsecured revolving credit facility of $50.0 million with an option to increase the facility to $80.0 million.  
Pursuant to an amendment we entered into in October 2008, the agreement extends to November 2011, with an option to 
renew for two additional one-year terms.  Under this agreement, interest accrues on any outstanding balance at either the 
lending institution’s base rate or the Eurodollar rate plus an applicable margin.  We also pay a non-use fee.  The amendment 
did not include any other material changes to the terms of the credit agreement.  Loans under this facility are intended 
primarily for general corporate purposes, including financing working capital, capital expenditures and acquisitions.  The 
credit agreement also contains various covenants.  No amounts are currently outstanding under this credit facility and we 
believe we are currently in compliance with the covenants. 

As discussed in Note 3 of the Notes to the Consolidated Financial Statements, we completed the acquisition of Epoch 
during our second quarter of fiscal 2009.  The total cash outlay was $60.5 million representing $59.4 million in cash paid  
to Epoch’s shareholders on the first closing date of February 27, 2009, $0.7 million in cash paid for transaction costs and  
$6.6 million held in an escrow account to be paid to Eternal on the second closing date, in August 2010, partially offset by 
$6.2 million in cash acquired with Epoch. 

At September 30, 2009, we owned two ARS with an estimated fair value of $8.1 million ($8.3 million par value).   
We successfully monetized at par value the majority of ARS we owned in fiscal 2008 and reinvested these funds in money 
market accounts.  We believe that we will be able to monetize the remaining two ARS at par, either through successful 
auctions, refinancing of the underlying debt by the issuers, payment by the bond insurance carrier, or holding the securities  
to maturity.  However, we believe it is not likely that our ARS will be monetized within the next operating cycle, which for 
us is generally one year, so we have classified these securities as long-term assets. 

  We believe that our current balance of cash and long-term investments, cash generated by our operations and available 
borrowings under our revolving credit facility will be sufficient to fund our operations, expected capital expenditures, merger 
and acquisition activities, and share repurchases for the foreseeable future.  However, we plan to further expand our business; 
therefore, we may need to raise additional funds in the future through equity or debt financing, strategic relationships or other 
arrangements.  The current uncertainty in the capital and credit markets may hinder our ability to secure additional financing 
in the type or amount necessary to pursue these objectives. 

OFF-BALANCE SHEET ARRANGEMENTS 

At September 30, 2009 and 2008, we did not have any unconsolidated entities or financial partnerships, such as entities 

often referred to as structured finance or special purpose entities, which might have been established for the purpose of 
facilitating off-balance sheet arrangements. 

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TABULAR DISCLOSURE OF CONTRACTUAL OBLIGATIONS 

The following summarizes our contractual obligations at September 30, 2009, and the effect such obligations are 

expected to have on our liquidity and cash flow in future periods. 

CONTRACTUAL OBLIGATIONS   
(In millions) 

Capital lease obligations 
Operating leases  
Acquisition related 
Purchase obligations  
Other long-term liabilities  
Total contractual obligations 

Total 

$  2.5 
6.5 
6.6 
29.0 
3.6 
$48.2 

Less Than 
1 Year 

1–3 
Years 

3–5 
Years 

After 5 
Years 

$  1.2 
2.3 
6.6 
23.9 
   — 
$34.0 

$1.3 
3.0 
       — 
2.3 
— 
$6.6 

     $ — 
0.8 
        — 
2.0 
   — 
$2.8 

    $ — 
0.4 
        — 
0.8 
3.6 
$4.8 

CAPITAL LEASE OBLIGATIONS 

In December 2001, we entered into a fumed alumina supply agreement with Cabot Corporation under which we agreed 
to pay Cabot Corporation for the expansion of a fumed alumina manufacturing facility in Tuscola, Illinois.  The arrangement 
for the facility has been treated as a capital lease for accounting purposes and the present value of the minimum quarterly 
payments resulted in an initial $9.8 million lease obligation and related leased asset.  The initial term of the agreement 
expired in December 2006, but it was renewed for another five-year term ending in December 2011.   

OPERATING LEASES 

  We lease certain vehicles, warehouse facilities, office space, machinery and equipment under cancelable and 
noncancelable operating leases, most of which expire within ten years of their respective commencement dates and may be 
renewed by us.  Operating lease obligations also include certain costs associated with our pad finishing operation located at 
Taiwan Semiconductor Manufacturing Company, which are accounted for as operating lease payments. 

ACQUISITION RELATED 

As discussed in Note 3 of the Notes to the Consolidated Financial Statements, we completed the first closing of the 
acquisition of Epoch during the second quarter of fiscal 2009.  Under the share repurchase agreement, we paid $59.4 million 
to obtain 90% of Epoch’s stock.  We expect to pay an additional $6.6 million to Eternal on the second closing date to 
purchase the remaining 10% ownership interest, in August 2010, and we have placed the $6.6 million in an escrow account 
for this purpose to be held until then.  The escrow account is recorded as short-term restricted cash at September 30, 2009 and 
is included with prepaid expenses and other current assets on our Consolidated Balance Sheet.  During this interim period, 
Eternal will continue to hold the remaining 10% ownership interest in Epoch; however, Eternal has waived rights to any 
interest in Epoch earnings during the interim period, including any associated dividends.  Consequently, we have recorded a 
$6.6 million current liability on our Consolidated Balance Sheet at September 20, 2009 in accrued expenses and other current 
liabilities rather than recording a minority interest in Epoch. 

PURCHASE OBLIGATIONS 

  We have entered into multi-year supply agreements with Cabot Corporation for the purchase of certain fumed metal 
oxides.  We purchase fumed silica primarily under a fumed silica supply agreement with Cabot Corporation that became 
effective in January 2004, and was amended in September 2006 and in April 2008, the latter of which extended the 
termination date of the agreement from December 2009 to December 2012 and also changed the pricing and some other  
non-material terms of the agreement to the benefit of both parties.  The agreement will automatically renew unless either 
party gives certain notice of non-renewal.  We are generally obligated to purchase fumed silica for at least 90% of our six-
month volume forecast for certain of our slurry products, to purchase certain non-material minimum quantities every six 
months, and to pay for the shortfall if we purchase less than these amounts.  We currently anticipate meeting all minimum 
forecasted purchase volume requirements.  Since December 2001, we have purchased fumed alumina primarily under a 
fumed alumina supply agreement with Cabot Corporation that has an original term ending in December 2006 and was 
renewed for another five-year term ending in December 2011.  Prices charged for fumed alumina from Cabot Corporation are 
pursuant to the terms of the supply agreement and may fluctuate based upon the actual costs incurred by Cabot Corporation 

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in the manufacture of fumed alumina.  Under these agreements, Cabot Corporation continues to be the exclusive supplier of 
certain quantities and types of fumed silica and fumed alumina for certain products we produced as of the effective dates of 
these agreements.  Subject to certain terms, these agreements prohibit Cabot Corporation from selling certain types of fumed 
silica and fumed alumina to third parties for use in CMP applications, as well as engaging itself in CMP applications.  If 
Cabot Corporation fails to supply us with our requirements for any reason, including if we require product specification 
changes that Cabot Corporation cannot meet, we have the right to purchase products meeting those specifications from other 
suppliers.  We also may purchase fumed alumina and fumed silica from other suppliers for certain products, including those 
commercialized after certain dates related to these agreements and their amendments.  Purchase obligations include an 
aggregate amount of $6.4 million of contractual commitments related to our Cabot Corporation agreements for fumed silica 
and fumed alumina.  

OTHER LONG-TERM LIABILITIES 

Other long-term liabilities at September 30, 2009 consist of liabilities related to our Japan retirement allowance and our 

liability for uncertain tax positions. 

ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK 

EFFECT OF CURRENCY EXCHANGE RATES AND EXCHANGE RATE RISK MANAGEMENT 

  We conduct business operations outside of the United States through our foreign operations.  Some of our foreign 
operations maintain their accounting records in their local currencies.  Consequently, period to period comparability of results  
of operations is affected by fluctuations in exchange rates.  The primary currencies to which we have exposure are the Japanese 
Yen and the New Taiwan Dollar and, to a lesser extent, the British Pound and the Euro.  From time to time we enter into forward 
contracts in an effort to manage foreign currency exchange exposure.  However, we may be unable to hedge these exposures 
completely.  During fiscal 2009, we recorded $0.2 in foreign currency translation gains that are included in other income on our 
Consolidated Statement of Income.  We also recorded $10.3 million in currency translation gains, net of tax, that are included in 
other comprehensive income on our Consolidated Balance Sheet.  These gains primarily are the result of general weakening of 
the U.S. dollar relative to the Japanese Yen.  Approximately 23% of our revenue is transacted in currencies other than the U.S. 
dollar.  However, we also incur expenses in foreign countries that are transacted in currencies other than the U.S. dollar, so the 
net exposure on the Consolidated Statement of Income is limited.  We do not currently enter into forward exchange contracts or 
other derivative instruments for speculative or trading purposes. 

MARKET RISK AND SENSITIVITY ANALYSIS RELATED TO FOREIGN EXCHANGE RATE RISK 

  We have performed a sensitivity analysis assuming a hypothetical 10% adverse movement in foreign exchange rates. As of 
September 30, 2009, the analysis demonstrated that such market movements would not have a material adverse effect on our 
consolidated financial position, results of operations or cash flows over a one-year period.  Actual gains and losses in the future 
may differ materially from this analysis based on changes in the timing and amount of foreign currency rate movements and our 
actual exposures. 

MARKET RISK RELATED TO INVESTMENTS IN AUCTION RATE SECURITIES 

At September 30, 2009, we owned two auction rate securities (ARS) with a total estimated fair value of $8.1 million ($8.3 

million par value) which were classified as other long-term assets on our Consolidated Balance Sheet.  Beginning in 2008, 
general uncertainties in the global credit markets caused widespread ARS auction failures as the number of securities submitted 
for sale exceeded the number of securities buyers were willing to purchase.  As a result, the short-term liquidity of the ARS 
market has been adversely affected.  For more information on our ARS, see “Risk Factors” set forth in Part I, Item 1A, “Critical 
Accounting Policies and Estimates” in Management’s Discussion and Analysis of Financial Condition and Results of Operations 
in Part II, Item 7, and Notes 4 and 8 of the Notes to the Consolidated Financial Statements in Part II, Item 8 of this Annual 
Report on Form 10-K.  

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ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA 

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS AND FINANCIAL STATEMENT SCHEDULE 

Consolidated Financial Statements: 

Report of Independent Registered Public Accounting Firm 
Consolidated Statements of Income for the years ended September 30, 2009, 2008 and 2007 
Consolidated Balance Sheets at September 30, 2009 and 2008 
Consolidated Statements of Cash Flows for the years ended September 30, 2009, 2008 and 2007 
Consolidated Statements of Changes in Stockholders’ Equity for the years ended September 30, 2009, 
     2008 and 2007 
Notes to Consolidated Financial Statements  
Selected Quarterly Operating Results 

Financial Statement Schedule: 

Schedule II—Valuation and Qualifying Accounts 

Page 

36 
38 
39 
40 

41 
42 
64 

65 

  All other schedules are omitted, because they are not required, are not applicable, or the information is included in the 
consolidated financial statements and notes thereto. 

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Report of Independent Registered Public Accounting Firm 

To the Stockholders and Board of Directors of 
Cabot Microelectronics Corporation:   

In our opinion, the consolidated financial statements listed in the accompanying index present fairly, in all material respects, 
the financial position of Cabot Microelectronics Corporation and its subsidiaries at September 30, 2009 and 2008, and the 
results of their operations and their cash flows for each of the three years in the period ended September 30, 2009 in 
conformity with accounting principles generally accepted in the United States of America.  In addition, in our opinion, the 
financial statement schedule listed in the accompanying index presents fairly, in all material respects, the information set 
forth therein when read in conjunction with the related consolidated financial statements.  Also in our opinion, the Company 
maintained, in all material respects, effective internal control over financial reporting as of September 30, 2009, based on 
criteria established in Internal Control–Integrated Framework issued by the Committee of Sponsoring Organizations of the 
Treadway Commission (COSO).  The Company’s management is responsible for these financial statements and financial 
statement schedule, for maintaining effective internal control over financial reporting and for its assessment of the 
effectiveness of internal control over financial reporting, included in Management’s Report on Internal Control Over 
Financial reporting appearing under Item 9A.  Our responsibility is to express opinions on these financial statements, on the 
financial statement schedule, and on the Company’s internal control over financial reporting based on our integrated 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 audits to obtain reasonable assurance about whether the 
financial statements are free of material misstatement and whether effective internal control over financial reporting was 
maintained in all material respects.  Our audits of the financial statements included examining, on a test basis, evidence 
supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant 
estimates made by management, and evaluating the overall financial statement presentation.  Our audit of internal control 
over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk 
that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based  
on the assessed risk.  Our audits also included performing such other procedures as we considered necessary in the 
circumstances.  We believe that our audits provide a reasonable basis for our opinions. 

As discussed in Note 16 to the consolidated financial statements, the Company changed the manner in which it accounts for 
uncertain tax positions on October 1, 2007, in accordance with standards for accounting for uncertainty in income taxes. 

A company’s internal control over financial reporting is a process designed 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 (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and 
dispositions of the assets of the company; (ii) 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 (iii) 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.  Also, 
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. 

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As described in Management’s Report on Internal Control Over Financial Reporting appearing under Item 9A, management 
has excluded certain elements of the internal control over financial reporting of Epoch (90% owned subsidiary) from its 
assessment of internal control over financial reporting as of September 30, 2009 because it was acquired by the Company in  
a business combination on February 27, 2009, midway through fiscal 2009.  Subsequent to the acquisition, certain corporate-
level controls were applied to elements of Epoch’s internal control over financial reporting.  Those elements that were not 
subject to such corporate-level controls have been excluded from management’s assessment of the effectiveness of internal 
control over financial reporting as of September 30, 2009.  We have also excluded these elements of the internal control  
over financial reporting of Epoch from our audit of the Company’s internal control over financial reporting.  The excluded 
elements represent controls over accounts that are 3% and 4% of consolidated total assets and consolidated net sales, 
respectively, as of and for the year ended September 30, 2009. 

PRICEWATERHOUSECOOPERS LLP 
Chicago, IL 
November 24, 2009 

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CABOT MICROELECTRONICS CORPORATION 
CONSOLIDATED STATEMENTS OF INCOME 
(In thousands, except per share amounts) 

Revenue 

Cost of goods sold  

Gross profit 

Operating expenses: 

Research, development and technical 
Selling and marketing 
General and administrative 
Purchased in-process research and development 

Total operating expenses 

Operating income 

Other income, net 
Income before income taxes 

Provision for income taxes 

Year Ended September 30, 
2009    
2007 
2008 

$291,372 

$375,069 

$338,205 

162,918 

200,596 

178,224 

128,454 

174,473 

159,981 

48,150 
22,239 
40,632 
1,410 
112,431 

49,155 
28,281 
47,595 
— 
125,031 

49,970 
24,310 
39,933 
— 
114,213 

16,023 

49,442 

45,768 

599 
16,622 

5,448 
54,890 

3,606 
49,374 

5,435 

16,552 

15,538 

Net income 

$   11,187  $   38,338  $   33,836 

Basic earnings per share 

$       0.48  $       1.64  $       1.42 

Weighted-average basic shares outstanding 

23,079 

23,315 

23,748 

Diluted earnings per share 

$       0.48  $       1.64  $       1.42 

Weighted-average diluted shares outstanding 

23,096 

23,348 

23,754 

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

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CABOT MICROELECTRONICS CORPORATION 
CONSOLIDATED BALANCE SHEETS 
(In thousands, except share and per share amounts) 

Current assets: 

ASSETS 

Cash and cash equivalents 
Short-term investments 
Accounts receivable, less allowance for doubtful accounts of $1,277 at 

September 30, 2009, and $403 at September 30, 2008 

Inventories 
Prepaid expenses and other current assets 
Deferred income taxes 

Total current assets 

Property, plant and equipment, net 
Goodwill  
Other intangible assets, net 
Deferred income taxes 
Other long-term assets 

Total assets 

LIABILITIES AND STOCKHOLDERS’ EQUITY 

Current liabilities: 

Accounts payable 
Capital lease obligations 
Accrued expenses and other current liabilities 

Total current liabilities 

Capital lease obligations, net of current portion 
Other long-term liabilities 

Total liabilities 

Commitments and contingencies (Note 17) 

Stockholders’ equity: 

Common stock: 

September 30, 

2009 

2008 

$199,952 
— 

$221,467 
4,950 

53,538 
44,940 
14,428 
3,994 
316,852 

122,782 
39,732 
18,741 
7,953 
9,084 
$515,144 

$  15,182 
1,210 
23,144 
39,536 

1,308 
3,571 
44,415 

41,630 
47,466 
10,714 
4,365 
330,592 

115,843 
7,069 
8,712 
11,178 
4,043 
$477,437 

$  13,885 
1,129 
22,787 
37,801 

2,518 
2,885 
43,204 

Authorized: 200,000,000 shares, $0.001 par value 
Issued:  26,143,116 shares at September 30, 2009, and  

25,906,990 shares at September 30, 2008 

Capital in excess of par value of common stock 
Retained earnings 
Accumulated other comprehensive income 
Treasury stock at cost, 2,698,234 shares at September 30, 2009, 

and 2,683,809 shares at September 30, 2008 

Total stockholders’ equity 

26 
213,031 
334,309 
13,690 

26 
198,022 
323,122 
3,054 

(90,327)  
470,729 

(89,991)  
434,233 

Total liabilities and stockholders’ equity 

$515,144 

$477,437 

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

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CABOT MICROELECTRONICS CORPORATION 
CONSOLIDATED STATEMENTS OF CASH FLOWS 
(In thousands) 

Year Ended September 30, 
2008 

2009 

2007 

Cash flows from operating activities: 
Net income 
Adjustments to reconcile net income to net cash provided by operating activities: 

$     11,187  $    38,338  $    33,836 

Depreciation and amortization 
Purchased in-process research and development 
Impairment of investment 
Provision for doubtful accounts 
Share-based compensation expense 
Deferred income tax expense (benefit) 
Non-cash foreign exchange gain 
Loss on disposal of property, plant and equipment 
Impairment of property, plant and equipment 
Other 

Changes in operating assets and liabilities: 

Accounts receivable 
Inventories 
Prepaid expenses and other assets 
Accounts payable 
Accrued expenses, income taxes payable and other liabilities 

Net cash provided by operating activities 
Cash flows from investing activities: 

Additions to property, plant and equipment 
Proceeds from the sale of property, plant and equipment 
Acquisitions of businesses including earnout payment, net of cash acquired 
Acquisition of patent license 
Purchases of short-term investments 
Proceeds from the sale of short-term investments 

Net cash provided by (used in) investing activities 
Cash flows from financing activities: 
Repurchases of common stock 
Net proceeds from issuance of stock 
Principal payments under capital lease obligations 

Net cash provided by (used in) financing activities 
Effect of exchange rate changes on cash 
Increase (decrease) in cash  

Cash and cash equivalents at beginning of year 
Cash and cash equivalents at end of year 
Supplemental disclosure of cash flow information: 

Cash paid for income taxes 
Cash paid for interest 

Supplemental disclosure of non-cash investing and financing activities: 

Purchase of property, plant and equipment in accrued 
     liabilities and accounts payable at the end of the period 
Issuance of restricted stock 
Assets acquired under capital lease 

24,832 
1,410 
— 
856 
12,802 
(2,064) 
(2,731) 
235 
1,245 
938 

(8,519) 
8,084 
4,889 
(464) 
(8,003) 
44,697 

25,951 
— 
— 
(97) 
15,067 
(6,753) 
(2,592) 
598 
4 
1,738 

11,849 
(9,268) 
(4,921) 
(2,472) 
3,397 
70,839 

24,170 
— 
2,052 
87 
12,846 
(6,533) 
(539) 
237 
52 
256 

(3,437) 
3,658 
(525) 
1,170 
(2,696) 
64,634 

(8,493) 
1 
(60,520) 
— 
— 
50 
(68,962) 

(19,232) 
42 
— 
— 
(233,775) 
383,290 
130,325 

(10,013) 
172 
(2,500) 
(3,000) 
(155,175) 
108,225 
(62,291) 

(336) 
2,206 
(1,129) 
741 
2,009 
(21,515) 
221,467 
$ 199,952 

(39,001) 
4,889 
(1,072) 
(35,184) 
930 
166,910 
54,557 
$ 221,467 

(9,995) 
7,759 
(999) 
(3,235) 
484 
(408) 
54,965 
$   54,557 

$     4,283 
$        338 

$   26,459 
$        420 

$   22,657 
$        468 

$        429 
$     4,209 
$         — 

$        391 
$     4,850 
$          44 

$        419 
$     4,792 
$          — 

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

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CABOT MICROELECTRONICS CORPORATION 
CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY 
(In thousands) 

Balance at September 30, 2006 
Issuance of Cabot Microelectronics   
     restricted stock under deposit share plan 
Issuance of Cabot Microelectronics stock  
     under Employee Stock Purchase Plan 

Share-based compensation expense 

Exercise of stock options 
Repurchases of common stock under share  
     repurchase plans, at cost 

Net income 

Foreign currency translation adjustment 

Total comprehensive income 

SFAS 158 transition adjustment 

Common 
Stock 

Capital 
In Excess 
Of Par 

Retained 
Earnings 

Accumulated 
Other 
Comprehensive 
Income 

Comprehensive 
Income 
(net of tax) 

Treasury 
Stock 

Total 

$24 

$157,463   

$251,007   

$    272 

  $(40,995)    $367,771 

176   

1,459   

12,846   

6,124   

176 

1,459 

12,846 

6,124 

(9,995)   

(9,995) 

35,287 

  (464) 

33,836   

$33,836 

1,451 

$35,287 

1,451 

(464) 

Balance at September 30, 2007 

$24 

$178,068   

$284,843   

$ 1,259 

  $(50,990)    $413,204 

165   

1,596   

15,067   
3,126   

    2 

Issuance of Cabot Microelectronics  
     restricted stock under deposit share plan 
Issuance of Cabot Microelectronics stock  
     under Employee Stock Purchase Plan 

Share-based compensation expense 
Exercise of stock options 
Repurchases of common stock under share  
     repurchase plans, at cost 

Net income 

Foreign currency translation adjustment 

Unrealized loss on investments 

Minimum pension liability adjustment 

Total comprehensive income 

Cumulative effect of adoption FIN 48 

38,338   

(59)  

2,341 

(151) 

(395) 

$38,338 

2,341 

(151) 

(395) 

$40,133 

165 

1,596 

15,067 
3,128 

(39,001)   

(39,001) 

40,133 

(59) 

Balance at September 30, 2008 

$26 

$198,022   

$323,122   

$ 3,054 

  $(89,991)    $434,233 

Share-based compensation expense 
Repurchases of common stock—other,  
     at cost 

Exercise of stock options 
Issuance of Cabot Microelectronics     
     restricted stock under deposit share plan 
Issuance of Cabot Microelectronics stock    
     under Employee Stock Purchase Plan 

Net income 

Foreign currency translation adjustment 

Minimum pension liability adjustment 

Total comprehensive income 

12,802   

680   

170   

1,357   

11,187   

10,275 

361 

$11,187 

10,275 

361 

$21,823 

(336)   

12,802 

(336) 

680 

170 

1,357 

21,823 

Balance at September 30, 2009 

$26 

$213,031   

$334,309 

$13,690 

  $(90,327) 

  $470,729 

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

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CABOT MICROELECTRONICS CORPORATION 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 
(In thousands, except share and per share amounts) 

1. BACKGROUND AND BASIS OF PRESENTATION   

  Cabot Microelectronics Corporation (“Cabot Microelectronics”, “the Company”, “us”, “we” or “our”) supplies high-
performance polishing slurries used in the manufacture of advanced integrated circuit (IC) devices within the semiconductor 
industry, in a process called chemical mechanical planarization (CMP).  CMP polishes surfaces at an atomic level, thereby 
enabling IC device manufacturers to produce smaller, faster and more complex IC devices with fewer defects.  We believe 
we are the world’s leading supplier of CMP slurries for IC devices.  We also develop, manufacture and sell CMP slurries for 
polishing certain components in hard disk drives, specifically rigid disk substrates and magnetic heads, and we believe we are 
one of the leading suppliers in this area.  In addition, we develop, produce and sell CMP polishing pads, which are used in 
conjunction with slurries in the CMP process.  We also pursue a number of demanding surface modification applications 
outside of the semiconductor and hard disk drive industries for which our capabilities and knowledge may provide value in 
improved surface performance or productivity.  

The audited consolidated financial statements have been prepared by us pursuant to the rules of the Securities and 
Exchange Commission (SEC) and accounting principles generally accepted in the United States of America.  We operate 
predominantly in one industry segment–the development, manufacture, and sale of CMP consumables.  Certain 
reclassifications of prior fiscal year amounts have been made to conform to the current period presentation. 

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 

PRINCIPLES OF CONSOLIDATION 

The consolidated financial statements include the accounts of Cabot Microelectronics and its subsidiaries.  All 

intercompany transactions and balances between the companies have been eliminated as of September 30, 2009. 

USE OF ESTIMATES 

The preparation of financial statements and related disclosures in conformity with accounting principles generally 
accepted in the United States of America requires management to make judgments, assumptions and estimates that affect the 
amounts reported in the consolidated financial statements and accompanying notes.  The accounting estimates that require 
management’s most difficult and subjective judgments include, but are not limited to, those estimates related to bad debt 
expense, warranty obligations, inventory valuation, valuation and classification of auction rate securities, impairment of  
long-lived assets and investments, business combinations, goodwill, other intangible assets, share-based compensation, 
income taxes and contingencies.  We base our estimates on historical experience, current conditions and on various other 
assumptions that we believe are reasonable under the circumstances.  However, future events are subject to change and 
estimates and judgments routinely require adjustment.  Actual results may differ from these estimates under different 
assumptions or conditions. 

CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS 

  We consider investments in all highly liquid financial instruments with original maturities of three months or less to  
be cash equivalents.  Short-term investments include securities generally having maturities of 90 days to one year.  As of 
September 30, 2008, we held $4,950 of short-term investments which were classified as available-for-sale securities.  These 
investments were reclassified to other long-term assets in fiscal 2009.  See Note 4 for a more detailed discussion of financial 
instruments. 

ACCOUNTS RECEIVABLE AND ALLOWANCE FOR DOUBTFUL ACCOUNTS 

Trade accounts receivable are recorded at the invoiced amount and do not bear interest.  We maintain an allowance for 

doubtful accounts for estimated losses resulting from the potential inability of our customers to make required payments.  
Our allowance for doubtful accounts is based on historical collection experience, adjusted for any specific known conditions 
or circumstances such as customer bankruptcies and increased risk due to economic conditions.  Uncollectible account 

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balances are charged against the allowance when we believe that it is probable that the receivable will not be recovered.   
See Schedule II under Part IV, Item 15 of this Form 10-K for more information on our allowance for doubtful accounts. 

CONCENTRATION OF CREDIT RISK 

Financial instruments that subject us to concentrations of credit risk consist principally of accounts receivable.  We perform 

ongoing credit evaluations of our customers’ financial conditions and generally do not require collateral to secure accounts 
receivable.  Our exposure to credit risk associated with nonpayment is affected principally by conditions or occurrences within 
the semiconductor industry and global economy.  We historically have not experienced material losses relating to accounts 
receivable from individual customers or groups of customers. 

The portions of revenue from customers who represented more than 10% of revenue were as follows: 

Taiwan Semiconductor Manufacturing Co. (TSMC) 

17% 

17% 

17% 

TSMC accounted for 14.0% and 8.0% of net accounts receivable at September 30, 2009 and 2008, respectively. 

Year Ended September 30, 
2007 
2008 
2009  

FAIR VALUES OF FINANCIAL INSTRUMENTS 

The recorded amounts of cash, accounts receivable, and accounts payable approximate their fair values due to their 
short-term, highly liquid characteristics.  The fair value of our long-term auction rate securities (ARS) is determined through 
discounted cash flow analyses.  See Note 4 for a more detailed discussion of the fair value of financial instruments. 

INVENTORIES 

Inventories are stated at the lower of cost, determined on the first-in, first-out (FIFO) basis, or market.  Finished goods 
and work in process inventories include material, labor and manufacturing overhead costs.  We regularly review and write 
down the value of inventory as required for estimated obsolescence or unmarketability.  An inventory reserve is maintained 
based upon a historical percentage of actual inventories written off applied against inventory value at the end of the period, 
adjusted for known conditions and circumstances. 

PROPERTY, PLANT AND EQUIPMENT 

Property, plant and equipment are recorded at cost.  Depreciation is based on the following estimated useful lives of the 

assets using the straight-line method: 

Buildings 
Machinery and equipment 
Furniture and fixtures 
Information systems 
Assets under capital leases 

15–25 years 
3–10 years 
5–10 years 
3–5 years 
Term of lease or estimated useful life 

Expenditures for repairs and maintenance are charged to expense as incurred.  Expenditures for major renewals and 

betterments are capitalized and depreciated over the remaining useful lives.  As assets are retired or sold, the related cost  
and accumulated depreciation are removed from the accounts and any resulting gain or loss is included in the results of 
operations.  Costs related to the design and development of internal use software are capitalized.  

IMPAIRMENT OF LONG-LIVED ASSETS 

Reviews are regularly performed to determine whether facts and circumstances exist that indicate the carrying amount of 

assets may not be recoverable or the useful life is shorter than originally estimated.  Asset recoverability assessment begins 
by comparing the projected undiscounted cash flows associated with the related asset or group of assets over their remaining 
lives against their respective carrying amounts.  Impairment, if any, is based on the excess of the carrying amount over the 
fair value of those assets.  If assets are determined to be recoverable, but their useful lives are shorter than originally 
estimated, the net book value of the asset is depreciated over the newly determined remaining useful life.   

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GOODWILL AND INTANGIBLE ASSETS 

  We amortize intangible assets with finite lives over their estimated useful lives, which range from two to ten years.  
Intangible assets with finite lives are reviewed for impairment using a process similar to that used to evaluate other long-lived 
assets.  Goodwill and indefinite lived intangible assets are not amortized and are tested annually in the fourth fiscal quarter or 
more frequently if indicators of potential impairment exist, using a fair-value-based approach.  Goodwill impairment testing 
requires a comparison of the fair value of each reporting unit to the carrying value.  If the carrying value exceeds fair value, 
goodwill is considered impaired.  The amount of the impairment is the difference between the carrying value of goodwill and 
the “implied” fair value.  The fair value of the reporting unit is determined using a discounted cash flow analysis of our 
projected future results.  The recoverability of indefinite lived intangible assets is measured using the royalty savings method, 
which requires a comparison between the fair value of the discounted royalty savings and the carrying value of the assets.  
We determined that goodwill and other intangible assets were not impaired as of September 30, 2009.  See Note 7 for a more 
detailed discussion of the impairment review in fiscal 2009. 

WARRANTY RESERVE 

  We maintain a warranty reserve that reflects management’s best estimate of the cost to replace product that does not 
meet customers’ specifications and performance requirements.  The warranty reserve is based upon a historical product return 
rate, adjusted for any specific known conditions or circumstances.  Adjustments to the warranty reserve are recorded in cost 
of goods sold.   

FOREIGN CURRENCY TRANSLATION 

Certain operating activities in Asia and Europe are denominated in local currency, considered to be the functional 
currency.  Assets and liabilities of these operations are translated using exchange rates in effect at the end of the year, and 
revenue and costs are translated using weighted average exchange rates for the year.  The related translation adjustments  
are reported in comprehensive income in stockholders’ equity.   

FOREIGN EXCHANGE MANAGEMENT 

  We transact business in various foreign currencies, primarily the Japanese Yen, New Taiwan Dollar, British Pound and the 
Euro.  Our exposure to foreign currency exchange risks has not been significant because a large portion of our business is 
denominated in U.S. dollars.  Periodically we enter into forward foreign exchange contracts in an effort to mitigate the risks 
associated with currency fluctuations on certain foreign currency balance sheet exposures.  Our foreign exchange contracts do 
not qualify for hedge accounting under the accounting rules for derivative instruments.  See Note 10 for more a more detailed 
discussion of derivative financial instruments.   

INTERCOMPANY LOAN ACCOUNTING 

  We maintain intercompany loan agreements with our wholly-owned subsidiary, Nihon Cabot Microelectronics K.K. 
(“the K.K.”), under which we provided funds to the K.K. to finance the purchase of certain assets from our former Japanese 
branch at the time of the establishment of this subsidiary, for the purchase of land adjacent to our Geino, Japan, facility, for 
the construction of our Asia Pacific technology center, and for the purchase of a 300 millimeter polishing tool and related 
metrology equipment, all of which are part of the K.K., as well as for general business purposes.  Since settlement of the 
notes is expected in the foreseeable future, and our subsidiary has been consistently making timely payments on the loans,  
the loans are considered foreign-currency transactions.  Therefore the associated foreign exchange gains and losses are 
recognized as other income or expense rather than being deferred in the cumulative translation account in other 
comprehensive income.   

PURCHASE COMMITMENTS 

  We have entered into unconditional purchase obligations, which include noncancelable purchase commitments and  
take-or-pay arrangements with suppliers.  We review our agreements and make an assessment of the likelihood of a shortfall 
in purchases and determine if it is necessary to record a liability. 

REVENUE RECOGNITION 

Revenue from CMP consumable products is recognized when title is transferred to the customer, which usually occurs 
upon shipment, but depends on the terms and conditions of the particular customer arrangement, provided acceptance and 

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collectability are reasonably assured.  Revenue related to inventory held on consignment at a customer site is recognized as 
the products are consumed by the customer.  

  Within our Engineered Surface Finishes (ESF) business, sales of equipment are recorded as revenue upon delivery.  
Amounts allocated to installation and training are deferred until those services are provided. 

Revenues are reported net of any value-added tax or other such tax assessed by a governmental authority on our revenue-

producing activities. 

SHIPPING AND HANDLING 

Costs related to shipping and handling are included in cost of goods sold. 

RESEARCH, DEVELOPMENT AND TECHNICAL 

Research, development and technical costs are expensed as incurred and consist primarily of staffing costs, materials and 

supplies, depreciation, utilities and other facilities costs. 

INCOME TAXES 

Current income taxes are determined based on estimated taxes payable or refundable on tax returns for the current year.  

Deferred income taxes are determined using enacted tax rates for the effect of temporary differences between the book and 
tax bases of recorded assets and liabilities.  The effect on deferred tax assets and liabilities of a change in tax rates is 
recognized in income in the period that includes the enactment date.  Provisions are made for both U.S. and any foreign 
deferred income tax liability or benefit.  We recognize the tax benefit of an uncertain tax position only if it is more likely  
than not that the tax position will be sustained by the taxing authorities, based on the technical merits of the position.   
See Note 16 for additional information on income taxes. 

SHARE-BASED COMPENSATION 

  We record share-based compensation expense for all share-based awards, including stock option grants, restricted stock 
and restricted stock unit awards and employee stock purchases.  We calculate share-based compensation expense using the 
straight-line approach based on awards ultimately expected to vest, which requires the use of an estimated forfeiture rate.  
Our estimated forfeiture rate is primarily based on historical experience, but may be revised in future periods if actual 
forfeitures differ from the estimate.  We use the Black-Scholes option-pricing model to estimate the grant date fair value of 
our stock options and employee stock purchases.  This model requires the input of highly subjective assumptions, including 
the option’s expected term, the price volatility of the underlying stock, the risk-free interest rate and the expected dividend 
rate, if any.  A small change in the underlying assumptions can have a relatively large effect on the estimated valuation.   
We estimate the expected volatility of our stock based on a combination of our stock’s historical volatility and the implied 
volatilities from actively-traded options on our stock.  We calculate the expected term of our stock options using the simplied 
method, due to our limited amount of historical option exercise data, and we add a slight premium to this expected term for 
employees who would meet the definition of retirement eligible pursuant to the terms of their grant agreements during the 
contractual term of the grant.  The simplified method uses an average of the vesting term and the contractual term of the 
option to calculate the expected term.  The risk-free rate is derived from the U.S. Treasury yield curve in effect at the time  
of grant. 

For additional information regarding our share-based compensation plans, refer to Note 12. 

EARNINGS PER SHARE 

Basic earnings per share (EPS) is calculated by dividing net income available to common stockholders by the weighted 
average number of common shares outstanding during the period.  Diluted EPS is calculated by using the weighted average 
number of common shares outstanding during the period increased to include the weighted average dilutive effect of  
“in-the-money” stock options and unvested restricted stock shares using the treasury stock method.  

COMPREHENSIVE INCOME 

Comprehensive income primarily differs from net income due to foreign currency translation adjustments. 

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EFFECTS OF RECENT ACCOUNTING PRONOUNCEMENTS 

In December 2007, the Financial Accounting Standards Board (FASB) issued new standards for the accounting for business 

combinations.  The new standards retain the purchase method of accounting for acquisitions, but require a number of changes, 
including changes in the way assets and liabilities are recognized in purchase accounting.  They also change the recognition  
of assets acquired and liabilities assumed arising from contingencies, require the capitalization of in-process research and 
development at fair value, and require acquisition-related costs to be charged to expense as incurred.  The new standards are 
effective for us October 1, 2009 and will apply prospectively to business combinations completed on or after that date.   

In December 2007, the FASB revised the standards for the accounting and reporting of minority equity interests in 
subsidiaries.  Minority interests will be recharacterized as noncontrolling interests and will be reported as a component of  
equity separate from the parent’s equity, and purchases or sales of equity interests that do not result in a change of control will  
be accounted for as equity transactions.  In addition, net income attributable to the noncontrolling interest will be included in 
consolidated net income on the face of the statement of operations and, upon loss of control, the interest sold, as well as any 
interest retained, will be recorded at fair value with any gain or loss recognized in earnings.  The new standards are effective for 
us beginning October 1, 2009 and will apply prospectively, except for the presentation and disclosure requirements, which will 
apply retrospectively.  We are currently assessing the potential impact that the adoption of these standards would have on our 
results of operations, financial position or cash flows.  Currently, there are no minority interests in any of our subsidiaries. 

In May 2009, the FASB established general standards of accounting for and disclosure of events that occur after the  

balance sheet date but before financial statements are issued or available to be issued, commonly referred to as subsequent 
events.  These standards are effective for interim and annual periods ending on or after June 15, 2009.  We performed an 
evaluation of subsequent events through November 24, 2009, the date the financial statements were issued.  There were no 
subsequent events that required disclosure under these accounting standards. 

In June 2009, the FASB issued new standards prescribing the information that a reporting entity must provide in its 
financial reports about the transfer of financial assets.  The new standards amend previous guidance by removing the concept  
of a qualifying special-purpose entity and removing the exception from applying the provisions of accounting for variable 
interest entities that are qualifying special-purpose entities.  The new standards are effective for transfers of financial assets 
occurring on or after January 1, 2010.  We do not believe the adoption of these new standards will have a material impact on  
our results of operations, financial position or cash flows. 

In June 2009, the FASB issued new standards regarding the recognition of a controlling financial interest in a variable 
interest entity (VIE).  The primary beneficiary of a VIE is defined as the enterprise that has both: 1) the power to direct the 
activities of a VIE that most significantly impact the entity’s economic performance; and 2) the obligation to absorb losses of  
the entity that could potentially be significant to the VIE or the right to receive benefits from the entity that could potentially  
be significant to the VIE.  The new standards also require ongoing reassessments of whether an enterprise is the primary 
beneficiary of a VIE.  The new standards are effective for annual reporting periods beginning after November 15, 2009 and  
for interim reporting periods within the first annual reporting period.  We do not believe the adoption of these new standards  
will have a material impact on our results of operations, financial position or cash flows.  We do not currently have any interest 
or arrangements that are considered variable interest entities. 

3.  BUSINESS COMBINATIONS 

All business combinations have been accounted for under the purchase method of accounting.  Accordingly, the assets 

and liabilities of the acquired entities are recorded at their estimated fair values at the date of acquisition.  Goodwill 
represents the excess of the purchase price over the fair value of net assets and amounts assigned to identifiable intangible 
assets.  Purchased in-process research and development (IPR&D), for which technological feasibility has not yet been 
established and no future alternative uses exist, is expensed immediately. 

On February 27, 2009, we completed the acquisition of Epoch Material Co., Ltd. (Epoch), which previously was a 
consolidated subsidiary of Eternal Chemical Co., Ltd. (Eternal).  Epoch is a Taiwan-based company specializing in the 
development, manufacture and sale of copper CMP slurries and CMP cleaning solutions to the semiconductor industry, and 
color filter slurries to the liquid crystal display (LCD) industry.  We paid $59,391 to obtain 90% of Epoch’s stock, plus $728 
of transaction costs, from our available cash balance.  We expect to pay an additional $6,600 to Eternal in August 2010 to 

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acquire the remaining 10% of Epoch’s stock and we have placed $6,600 in an escrow account in Taiwan to be held for this 
purpose until the payment date.  The escrow account is recorded as current restricted cash at September 30, 2009 and is 
included with prepaid expenses and other current assets on our Consolidated Balance Sheet.  During this interim period, 
Eternal will continue to hold the remaining 10% ownership interest in Epoch.  However, Eternal has waived rights to any 
interest in the earnings of Epoch during the interim period, including any associated dividends.  Consequently, we have 
recorded a $6,600 current liability in accrued expenses and other current liabilities on our Consolidated Balance Sheet at 
September 30, 2009, rather than recording a minority interest in Epoch, and we have recorded 100% of Epoch’s results of 
operations from February 27, 2009 through the end of our fiscal year in our Consolidated Statement of Income. 

The purchase price for Epoch was allocated to tangible assets, liabilities assumed, identified intangible assets acquired, as 
well as IPR&D, based on our estimation of their fair values.  The excess of the purchase price over the aggregate fair values was 
recorded as goodwill and is generally fully deductible for tax purposes.  The following table summarizes the final purchase price 
allocation. 

Current assets 
Long-term assets 
In-process research and development 
Identified intangible assets 
Goodwill 

Total assets acquired 
Total liabilities assumed 
Net assets acquired 

$11,453 
13,965 
1,410 
11,510 
29,877 
68,215 
1,496 
$66,719 

The following unaudited pro forma consolidated results of operations have been prepared as if the acquisition of Epoch had 

occurred on October 1, 2008 and 2007: 

Revenues 
Net income 
Net income per share: 
     Basic 
     Diluted 

Fiscal Year Ended 
September 30, 

2009 

2008 

$296,120  $410,309 
$  10,205  $  47,327 

$      0.44  $      2.03 
$      0.44  $      2.03 

The unaudited pro forma consolidated results of operations do not purport to be indicative of the results that would have 
been achieved if the acquisition had actually occurred as of the dates indicated, or of those results that may be achieved in the 
future.  The unaudited pro forma consolidated results of operations include adjustments to net income to give effect to: 
expensing of IPR&D on October 1, 2008 and 2007; amortization of intangible assets acquired; depreciation of property,  
plant and equipment acquired; and income taxes.   

4.  FAIR VALUE OF FINANCIAL INSTRUMENTS 

On October 1, 2008, we adopted various accounting standards issued by the FASB for the fair value measurement of  

all financial assets and financial liabilities.  These standards established a common definition for fair value in generally 
accepted accounting principles, established a framework for measuring fair value and expanded disclosure about such fair 
value measurements.  These standards also clarified the application of fair value measurement in an inactive market and 
illustrated how an entity would determine fair value when the market for a financial asset is not active.  These standards  
allow measurement at fair value of eligible financial assets and financial liabilities that are not otherwise measured at fair value 
on an instrument-by-instrument basis (the “fair value option”).  We did not elect the fair value option for any financial assets or 
financial liabilities that were not previously required to be measured at fair value under other generally accepted accounting 
principles.  As permitted by these fair value standards, we intend to adopt the provisions that relate to non-financial assets  
and non-financial liabilities in fiscal 2010.  We do not believe the adoption of these new provisions will have a material 
impact on our results of operations, financial position or cash flows. 

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Fair value is defined as the price that would be received from the sale of an asset or paid to transfer a liability (an exit 

price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market 
participants on the measurement date.  The FASB established a three-level hierarchy for disclosure based on the extent and 
level of judgment used to estimate fair value.  Level 1 inputs consist of valuations based on quoted market prices in active 
markets for identical assets or liabilities.  Level 2 inputs consist of valuations based on quoted prices for similar assets or 
liabilities, quoted prices for identical assets or liabilities in an inactive market, or other observable inputs.  Level 3 inputs 
consist of valuations based on unobservable inputs that are supported by little or no market activity.  Effective April 1, 2009, 
we adopted new fair value standards issued by the FASB which require disclosures about fair value of financial instruments in 
interim reporting periods as well as in annual financial statements and require fair value disclosures in summarized financial 
information at interim periods.   

The following table presents financial assets that we measured at fair value on a recurring basis at September 30, 2009.  
As permitted under the relevant standards, we have chosen to not measure any of our financial liabilities at fair value as we 
believe our financial liabilities approximate their fair value due to their short-term, highly liquid characteristics.  We have 
classified the following assets in accordance with the fair value hierarchy set forth in the applicable standards.  In instances 
where the inputs used to measure the fair value of an asset fall into more than one level of the hierarchy, we have classified 
them based on the lowest level input that is significant to the determination of the fair value. 

Cash and cash equivalents 
Auction rate securities (ARS) 
Total 

Level 1 
$199,952 
— 
$199,952 

Level 2 
$— 
— 
$— 

Level 3 
  $     — 
8,116 
  $8,116 

Total 
Fair Value 
$199,952 
8,116 
$208,068 

Our cash and cash equivalents consist of various bank accounts used to support our operations and investments in 
institutional money-market funds which are traded in active markets.  The recorded amounts of cash, accounts receivable  
and accounts payable approximate their fair values due to their short-term, highly liquid characteristics.  The fair value of our 
long-term ARS is determined through two discounted cash flow analyses, one using a discount rate based on a market index 
comprised of tax exempt variable rate demand obligations and one using a discount rate based on the LIBOR swap curve,  
adding a risk factor to reflect current liquidity issues in the ARS market. 

Effective April 1, 2009, we adopted accounting standards issued by the FASB regarding the classification and valuation of 
financial instruments, including the recognition and presentation of other-than-temporary impairments for investment securities 
we purchase and the determination of fair value of financial instruments when the volume of trading activity significantly 
decreases.  A debt security is considered to be impaired when the fair value of the debt security is less than its amortized cost at 
the balance sheet date.  An other-than-temporary impairment must be recorded when a credit loss exists; that is when the present 
value of the expected cash flows from a debt security is less than the amortized cost basis of the security.  An impairment is 
considered to be other-than-temporary when: 1) an entity intends to sell a debt security that is impaired; 2) when it is more likely 
than not that an entity will be required to sell the security before the recovery of its amortized cost basis; or 3) when a credit loss 
exists.  An entity must recognize an impairment related to any of the three of these circumstances currently in earnings. 

  We applied these new standards to the valuation of our investment in ARS at September 30, 2009.  Our ARS investments at 
September 30, 2009 consisted of two tax exempt municipal debt securities with a total par value of $8,350.  We experienced our 
first failed auction in February 2008, and since that time the auctions of our two ARS have continued to fail.  Despite the failed 
auctions, there have been no defaults of the underlying securities and interest income on these holdings continues to be received 
on scheduled interest payment dates.  Our ARS, when purchased, were generally issued by A-rated municipalities.  Although the 
credit ratings of both municipalities have been downgraded since our original investment, the ARS are credit enhanced with 
bond insurance and currently carry a credit rating of AAA.   

Since an active market for ARS does not currently exist, we determine the fair value of these investments using a Level 3 
discounted cash flow analysis and also consider other factors such as the reduced liquidity in the ARS market and nature of the 
insurance backing.  Key inputs to our discounted cash flow model include projected cash flows from interest and principal 
payments and the weighted probabilities of future successful auctions or debt refinancing by the issuer.  We also incorporate 
certain Level 2 market indices into the discounted cash flow analysis, including published rates such as the LIBOR rate, the 
LIBOR swap curve and a municipal swap index published by the Securities Industry and Financial Markets Association.   

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Based on our fair value assessment, we determined that one ARS continues to be impaired as of September 30, 2009.  This 
security has a fair value of $3,166 (par value $3,400) and has been classified as a long-term asset in Other Long-Term Assets on 
the Consolidated Balance Sheet.  We assessed the impairment in accordance with the applicable standards and determined that 
the impairment was due to the lack of liquidity in the ARS market rather than to credit risk.  We have maintained the $234 
temporary impairment that we first recorded in fiscal 2008.  In addition, we believe that this ARS is not permanently impaired 
because in the event of default by the municipality, the insurance provider would pay interest and principal following the 
original repayment schedule, and we do not intend to sell the security nor do we believe we will be required to sell the security 
before the value recovers, which may be at maturity.  During our second fiscal quarter ended March 31, 2009, we were able to 
successfully monetize at par value $50 of this security as the municipality refinanced a portion of its debt.  We determined that 
the fair value of the other ARS was not impaired as of September 30, 2009.  See Note 8 for more information on these 
investments.   

5.  INVENTORIES 

Inventories consisted of the following: 

Raw materials 
Work in process 
Finished goods 
Total 

6.  PROPERTY, PLANT AND EQUIPMENT 

Property, plant and equipment consisted of the following: 

Land  
Buildings 
Machinery and equipment 
Furniture and fixtures 
Information systems 
Capital leases 
Construction in progress 
Total property, plant and equipment 
Less: accumulated depreciation and amortization 

of assets under capital leases 
Net property, plant and equipment 

September 30, 

2009 
$20,082 
3,080 
  21,778 
$44,940 

2008 
$21,378 
4,628 
  21,460 
$47,466 

September 30, 

2009 

2008 

$   19,550  $   17,661 
70,602 
128,311 
5,488 
15,348 
9,820 
1,278 
248,508 

84,625 
143,795 
5,782 
17,898 
9,820 
2,497 
283,967 

 (161,185) 
(132,665) 
$ 122,782  $ 115,843 

Depreciation expense, including amortization of assets recorded under capital leases, was $22,310, $23,114 and $21,365 

for the years ended September 30, 2009, 2008 and 2007, respectively. 

In fiscal 2009, we recorded $1,245 in impairment expense primarily related to the decision to write-off certain research 
and development equipment in accordance with the applicable accounting standards for the impairment and disposal of long-
lived assets.  Of this amount, $22 and $1,223 was included in cost of goods sold and research, development and technical 
expense, respectively.  Impairment expense for fiscal 2007 and 2008 was not material.   

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7.  GOODWILL AND OTHER INTANGIBLE ASSETS 

Goodwill was $39,732 as of September 30, 2009 and $7,069 as of September 30, 2008.  The increase in goodwill 
resulted from the $29,877 of goodwill from the acquisition of Epoch as discussed in Note 3, plus $2,786 due to foreign 
exchange fluctuations of the New Taiwan Dollar related to Epoch goodwill. 

The components of other intangible assets are as follows: 

September 30, 2009 
Gross 
Carrying 
Accumulated 
Amount  Amortization  Amount  Amortization 

September 30, 2008 
Gross 
Carrying 

Accumulated 

Other intangible assets subject to amortization: 
Product technology 
Acquired patents and licenses 
Trade secrets and know-how 
Customer relationships, distribution rights and other 
Total other intangible assets subject to amortization 
Total other intangible assets not subject to amortization* 
Total other intangible assets 

$  8,135 
8,000 
2,550 
  11,287 
  29,972 
  1,190 
$31,162 

$  1,978 
5,825 
2,550 
    2,068 
  12,421 

$12,421 

$  5,380 
8,000 
2,550 
    1,457 
  17,387 
    1,190 
$18,577 

$1,210 
4,716 
2,550 
 1,389 
 9,865 

$9,865 

* Total other intangible assets not subject to amortization primarily consist of trade names. 

Changes in the amounts recorded as other intangible assets included $11,510 of intangible assets added as a result of  
our acquisition of Epoch and an increase of $1,075 due to foreign exchange fluctuations of the New Taiwan Dollar on the 
Epoch intangible assets.  We acquired $2,520 in product technology assets with an average useful life of seven years and  
we acquired $8,990 in fair value of customer relationships and other intangible assets with a weighted average useful life  
of approximately nine years.  We also purchased $1,410 of IPR&D related to one project.  The amount allocated to IPR&D  
was determined through established valuation techniques and was expensed upon acquisition because technological 
feasibility had not yet been established and no alternative future uses existed.   

Goodwill and indefinite lived intangible assets are tested for impairment annually in the fourth fiscal quarter or more 
frequently if indicators of potential impairment exist, using a fair-value-based approach.  The recoverability of goodwill  
is measured at the reporting unit level, which is defined as either an operating segment or one level below an operating 
segment.  We have consistently determined the fair value of our reporting units using a discounted cash flow analysis of our 
projected future results.  The recoverability of indefinite lived intangible assets is measured using the royalty savings method.  
The use of discounted projected future results is based on assumptions that are consistent with our estimates of future growth 
within the strategic plan used to manage the underlying business.  Factors requiring significant judgment include assumptions 
related to future growth rates, discount factors, royalty rates and tax rates, among others.  Changes in economic and operating 
conditions that occur after the annual impairment analysis or an interim impairment analysis that impact these assumptions 
may result in future impairment charges. 

  Our wholly-owned subsidiary, QED Technologies International, Inc. (QED), was impacted by the global recession more 
significantly than other areas of our business based on the decline in revenue from fiscal 2008.  As a result, we performed 
impairment reviews for QED throughout the fiscal year.  QED has goodwill of $5,000, indefinite lived intangibles assets of 
$1,170 and intangible assets subject to amortization of $3,631 at September 30, 2009.  Our annual impairment analysis for 
QED in the fourth quarter of fiscal 2009 included current estimates of future cash flows.  Management combines current 
projections of market and economic data with estimates of our mix of products sold, production costs and operating expenses.  
We discounted the resulting projected cash flows over a range of discount rates between 14% and 16%, based upon an  
analysis of weighted average cost of capital of peer companies of QED.  Although we determined that the goodwill and  
intangible assets of QED were not impaired, a hypothetical 10% decline in our cash flow projections would have resulted  
in the calculated fair value of QED being less than its carrying value.  This would have required us to complete additional 
goodwill impairment testing and may have resulted in an impairment.   

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  As a result of the review performed in the fourth quarter of fiscal 2009, we determined that there was no impairment of 
our goodwill and intangible assets as of September 30, 2009.   

Amortization expense was $2,522, $2,837 and $2,805 for fiscal 2009, 2008 and 2007, respectively.  Estimated future 

amortization expense for the five succeeding fiscal years is as follows: 

Fiscal Year 
2010 
2011 
2012 
2013 
2014 

8.  OTHER LONG-TERM ASSETS 

 Other long-term assets consisted of the following: 

Long-term investments 
Other long-term assets 
Total 

  Estimated 

Amortization 
Expense   
$2,384 
2,377 
2,377 
2,377 
2,336 

September 30, 
2009 
2008 
$3,216 
$8,116 
     968 
     827 
$9,084 
$4,043 

  As discussed in Note 4 of this Form 10-K, our two ARS that we owned as of September 30, 2009 are classified as long-term 
investments.  The securities are credit enhanced with bond insurance to a AAA credit rating and all interest payments continue to 
be received on a timely basis.  Although we believe these securities will ultimately be collected in full, we believe that it is not 
likely that we will be able to monetize the securities in our next business cycle (which for us is generally one year).  One of these 
securities with a fair value and par value of $4,950 had been classified as a short-term investment at September 30, 2008.  Since 
the auctions on this security have continued to fail for more than one year, we reclassified the $4,950 to other long-term assets 
on our Consolidated Balance Sheet during the quarter ended March 31, 2009.  We maintain a $234 pretax reduction ($151 net  
of tax) in fair value on the other ARS that we had recognized as of September 30, 2008.  We assessed the impairment and 
determined that the impairment was temporary as it was related to the illiquid ARS market rather than credit risk.  In addition, 
we continue to believe this decline in fair value is temporary based on the nature of the underlying debt, the presence of bond 
insurance, our expectation that the issuer may refinance its debt, the fact that all interest payments have been received, and our 
intention not to sell the security nor be required to sell the security until the value recovers, which may be at maturity, given our 
current cash position, our expected future cash flow, and our unused debt capacity. 

9.  ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES 

Accrued expenses and other current liabilities consisted of the following: 

Accrued compensation 
Goods and services received, not yet invoiced 
Warranty accrual 
Taxes, other than income taxes 
Acquisition related 
Other 
Total 

September 30, 
2008 
2009 

$  8,462  $16,206 
2,060 
2,806 
863 
360 
998 
1,175 
— 
6,600 
   3,741 
   2,660 
$23,144  $22,787 

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The decrease in accrued compensation resulted primarily from the payment of our annual bonus related to fiscal year ended 

September 30, 2008 and a reduction in the bonus accrual for fiscal 2009 compared to the prior fiscal year.  As discussed in  
Note 3 of this Form 10-K, we completed the acquisition of Epoch during the quarter ended March 31, 2009.  The terms of this 
acquisition required us to place $6,600 in an escrow account representing the cash we expect to pay in August 2010 for the 
remaining 10% ownership interest in Epoch.  This expected payment is recorded as a current liability in accrued expenses and 
other current liabilities on our Consolidated Balance Sheet as of September 30, 2009. 

10. DERIVATIVE FINANCIAL INSTRUMENTS 

On January 1, 2009, we adopted new accounting standards regarding disclosures about derivative instruments and hedging 

activities.  These standards require enhanced disclosures about (a) how and why derivative instruments are used, (b) how 
derivative instruments and related hedged items are accounted for, and (c) how derivative instruments and related hedged 
items affect our financial position, financial performance and cash flows.   

Periodically we enter into forward foreign exchange contracts in an effort to mitigate the risks associated with currency 
fluctuations on certain foreign currency balance sheet exposures.  Our foreign exchange contracts do not qualify for hedge 
accounting; therefore, the gains and losses resulting from the impact of currency exchange rate movements on our forward 
foreign exchange contracts are recognized as other income or expense in the accompanying consolidated income statements 
in the period in which the exchange rates change.  We do not use derivative financial instruments for trading or speculative 
purposes.  In addition, all derivatives, whether designated in hedging relationships or not, are required to be recorded on the 
balance sheet at fair value.  At September 30, 2009, we had one forward foreign exchange contract selling Japanese Yen 
related to an intercompany note with one of our subsidiaries in Japan and for the purpose of hedging the risk associated with 
a net transactional exposure in Japanese Yen. 

The fair value of our derivative instrument included in the Consolidated Balance Sheet was as follows: 

Derivatives not 
designated as hedging 
instruments 
Foreign exchange 
contracts 

Balance Sheet 
Location 

Prepaid expenses and 
other current assets 
Accrued expenses and 
other current liabilities 

Asset Derivatives 

Liability Derivatives 

Fair Value at 
September 30, 
2009 

Fair Value at 
September 30, 
2008 

Fair Value at 
September 30, 
2009 

Fair Value at 
September 30, 
2008 

$— 

$— 

$26 

$— 

$  — 

$242 

$— 

$— 

The following table summarizes the effect of our derivative instrument on our Consolidated Statement of Income (Loss) for 

the fiscal years ended September 30, 2009, 2008 and 2007: 

Gain (Loss) Recognized in Statement of Income (Loss) 

Fiscal Year Ended 

Derivatives not  
designated as  
hedging instruments 
Foreign exchange contracts 

Statement of Income 
(Loss) Location 
Other income, net 

September 30, 
2009 
$(2,573) 

September 30, 
2008 
$(928) 

September 30, 
2007 
$261 

11.  REVOLVING CREDIT FACILITY 

  We have an unsecured revolving credit facility of $50,000 with an option to increase the facility up to $80,000.  Pursuant 
to an amendment we entered into in October 2008, this agreement extends to November 2011, with an option to renew for 
two additional one-year terms.  Under this agreement, interest accrues on any outstanding balance at either the lending 
institution’s base rate or the Eurodollar rate plus an applicable margin.  We also pay a non-use fee.  This amendment did not 
include any other material changes to the terms of the credit agreement.  Loans under this facility are intended primarily for 

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general corporate purposes, including financing working capital, capital expenditures and acquisitions.  The credit agreement 
also contains various covenants.  No amounts are currently outstanding under this credit facility and we believe we are 
currently in compliance with its covenants.   

12.  SHARE-BASED COMPENSATION PLANS 

EQUITY INCENTIVE PLAN 

In March 2004, our stockholders approved our Second Amended and Restated Cabot Microelectronics Corporation 2000 
Equity Incentive Plan (the “EIP”), as amended and restated September 23, 2008, which is administered by the Compensation 
Committee of the Board of Directors and is intended to provide enough shares to give us ongoing flexibility to attract, retain  
and reward our employees, directors, consultants and advisors.  The EIP allows for the granting of four types of equity incentive 
awards: stock options, restricted stock, restricted stock units and substitute awards.  Substitute awards are those awards that, in 
connection with an acquisition, may be granted to employees, directors, consultants or advisors of the acquired company, in 
substitution for equity incentives held by them in the seller or the acquired company.  No substitute awards have been granted  
to date.  The EIP authorizes up to 9,500,000 shares of stock to be granted thereunder, including up to 1,900,000 shares in the 
aggregate of restricted stock or restricted stock units and up to 1,750,000 incentive stock options (ISO).  Shares issued under  
our share-based compensation plans are issued from new shares rather than from treasury shares.   

Non-qualified stock options issued under the EIP are generally time-based and provide for a ten-year term, with options 
generally vesting equally over a four-year period, with first vesting on the first anniversary of the award date.  Compensation 
expense related to our stock option awards was $9,507, $12,381 and $11,141 in fiscal 2009, 2008 and 2007, respectively.  
For additional information on our accounting for share-based compensation, see Note 2 to the consolidated financial 
statements.  Under the EIP, employees and non-employees may also be granted ISOs to purchase common stock at not  
less than the fair value on the date of the grant.  No ISOs have been granted to date.   

Under the EIP, employees and non-employees may be awarded shares of restricted stock or restricted stock units, which 
generally vest over a four-year period, with first vesting on the anniversary of the grant date.  In general, shares of restricted 
stock and restricted stock units may not be sold, assigned, transferred, pledged, disposed of or otherwise encumbered.  
Holders of restricted stock, and restricted stock units, if specified in the award agreements, have all the rights of stockholders, 
including voting and dividend rights, subject to the above restrictions, although the current holders of restricted stock units do 
not have such rights.  Restricted shares under the EIP also may be purchased and placed “on deposit” by executive officers 
pursuant to the 2001 Deposit Share Plan.  Shares purchased under this Deposit Share Plan receive a 50% match in restricted 
shares (“Award Shares”).  These Award Shares vest at the end of a three-year period, and are subject to forfeiture upon early 
withdrawal of the deposit shares.  Compensation expense related to our restricted stock and restricted stock unit awards and 
restricted shares matched at 50% pursuant to the Deposit Share Plan was $2,893, $2,022 and $954 for fiscal 2009, 2008 and 
2007, respectively.   

Since fiscal 2007, as permitted by the EIP, the Compensation Committee of our Board of Directors has awarded a blend 
of non-qualified stock option grants and restricted stock awards (restricted stock units for our non-United States employees) 
to eligible employees and non-employee directors according to an approximate three-to-one ratio of non-qualified stock 
options granted to shares of restricted stock or restricted stock units awarded.  Prior to this time, only non-qualified stock 
options were awarded.  Our Compensation Committee began awarding a blend of stock options and restricted stock to 
address the financial impact of the expensing of equity-based compensation, as well as to provide a more competitive balance 
of equity incentives being awarded to our employees and non-employee directors under the EIP.  

EMPLOYEE STOCK PURCHASE PLAN  

In March 2008, our stockholders approved our 2007 Cabot Microelectronics Employee Stock Purchase Plan (the “ESPP”), 

which amended the ESPP for the primary purpose of increasing the authorized shares of common stock to be purchased under 
the ESPP from 475,000 designated shares to 975,000 shares.  The ESPP allows all full and certain part-time employees of Cabot 
Microelectronics and its subsidiaries to purchase shares of our common stock through payroll deductions.  Employees can elect 
to have up to 10% of their annual earnings withheld to purchase our stock, subject to a maximum number of shares that a 
participant may purchase and a maximum dollar expenditure in any six-month offering period, and certain other criteria.  The 
provisions of the ESPP allow shares to be purchased at a price no less than the lower of 85% of the closing price at the beginning 
or end of each semi-annual stock purchase period.  Prior to January 1, 2009, the shares were purchased at the maximum 15% 

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discount.  In conjunction with certain cost reduction initiatives we implemented in the second quarter of fiscal 2009, the ESPP 
was amended as of February 2009 and the 15% discount was suspended.  Consequently, effective with the six-month period 
beginning January 1, 2009, the ESPP shares were purchased at a price equal to the lower of the closing price at the beginning  
or end of each semi-annual offering period.  A new amendment to the ESPP has been approved which will provide for the 
reinstatement of the 15% discount effective January 1, 2010.  A total of 57,815, 54,625, and 54,180 shares were issued under the 
ESPP during fiscal 2009, 2008 and 2007, respectively.  Compensation expense related to the ESPP was $324, $508 and $446 in 
fiscal 2009, 2008 and 2007, respectively. 

DIRECTORS’ DEFERRED COMPENSATION PLAN 

The Directors’ Deferred Compensation Plan, as amended and restated September 23, 2008, became effective in March 
2001 and applies only to our non-employee directors.  The cumulative number of shares deferred under the plan was 43,671 
and 40,092 as of September 30, 2009 and 2008, respectively.  Compensation expense related to our Directors’ Deferred 
Compensation Plan was $78, $156 and $305 for fiscal 2009, 2008 and 2007, respectively.   

ACCOUNTING FOR SHARE-BASED COMPENSATION 

  We record share-based compensation expense for all share-based awards, including stock option grants, restricted stock 
and restricted stock unit awards and employee stock purchases.  We calculate share-based compensation expense using the 
straight-line approach based on awards ultimately expected to vest, which requires the use of an estimated forfeiture rate.  
Our estimated forfeiture rate is primarily based on historical experience, but may be revised in future periods if actual 
forfeitures differ from the estimate.  We use the Black-Scholes model to estimate the grant date fair value of our stock 
options and employee stock purchases.  This model requires the input of highly subjective assumptions, including the price 
volatility of the underlying stock, the expected term of our stock options and the risk-free interest rate.  We estimate the 
expected volatility of our stock options based on a combination of our stock’s historical volatility and the implied volatilities 
from actively-traded options on our stock.  We calculate the expected term of our stock options using the simplified method, 
due to our limited amount of historical option exercise data, and we add a slight premium to this expected term for employees 
who meet the definition of retirement eligible pursuant to their grants during the contractual term of the grant.  The simplified 
method uses an average of the vesting term and the contractual term of the option to calculate the expected term.  The risk-
free rate is derived from the U.S. Treasury yield curve in effect at the time of grant. 

The fair value of our share-based awards was estimated using the Black-Scholes model with the following weighted-

average assumptions: 

Year Ended September 30, 
2008 

2009 

2007 

Stock Options 
Weighted-average grant date fair value 
Expected term (in years) 
Expected volatility 
Risk-free rate of return 
Dividend yield 

ESPP 
Weighted-average grant date fair value 
Expected term (in years) 
Expected volatility 
Risk-free rate of return 
Dividend yield 

$11.63 
6.50 
   50% 
2.1% 
— 

$17.74 
6.51 

$18.12 
6.56 

43% 
3.5% 
— 

52% 
4.4% 
— 

$  6.38 
0.50 
   48% 
1.2% 
— 

$  8.74 
0.50 

$  8.30 
0.50 

33% 
3.4% 
— 

30% 
5.1% 
— 

The Black-Scholes model is primarily used in estimating the fair value of short-lived exchange traded options that have 

no vesting restrictions and are fully transferable.  Because employee stock options and employee stock purchases have certain 
characteristics that are significantly different from traded options, and because changes in the subjective assumptions can 
materially affect the estimated value, our use of the Black-Scholes model for estimating the fair value of stock options and 
employee stock purchases may not provide an accurate measure.  Although the value of our stock options and employee 
stock purchases are determined in accordance with applicable accounting standards using an option-pricing model, those 
values may not be indicative of the fair values observed in a willing buyer/willing seller market transaction. 

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The fair value of our restricted stock and restricted stock unit awards represents the closing price of our common stock 

on the date of grant.  Share-based compensation expense related to restricted stock and restricted stock unit awards is 
recorded net of expected forfeitures. 

SHARE-BASED COMPENSATION EXPENSE 

Total share-based compensation expense for the year ended September 30, 2009, 2008 and 2007, is as follows: 

Income statement classifications: 
  Cost of goods sold 
  Research, development and technical 
  Selling and marketing 
  General and administrative 
  Tax benefit 

Total share-based compensation expense, net of tax 

Year Ended September 30, 
2007 
2008 
2009 
$     775 
$  1,119 
$      982 
1,131 
1,226 
1,079 
1,293 
1,492 
1,207 
9,647 
11,230 
9,534 
   (4,574) 
    (4,588) 
    (5,367) 
$  8,258 
$  9,700 
$   8,228 

The costs presented in the preceding table for share-based compensation expense may not be representative of the total 
effects on reported income for future years.  Factors that may impact future years include, but are not limited to, changes to 
our historical approaches to long-term incentives such as described above, the timing and number of future grants of share-
based awards, the vesting period and contractual term of share-based awards and types of equity awards granted.  Further, 
share-based compensation may be impacted by changes in the fair value of future awards through variables such as 
fluctuations in and volatility of our stock price, as well as changes in employee exercise behavior and forfeiture rates.   

STOCK OPTION ACTIVITY 

A summary of stock option activity under the EIP as of September 30, 2009, and changes during the fiscal 2009 are 

presented below: 

Weighted 
Average 
Remaining 
Contractual 
Term (in years) 

Aggregate 
Intrinsic 
Value 
(in thousands) 

Weighted 
Average 
Exercise 
Price 
$40.74 
22.71 
31.47 
  43.11 

Stock 
Options 
4,092,395 
522,120 
(21,617) 
 (223,985) 

Outstanding at September 30, 2008 

Granted 
Exercised 
Forfeited or canceled 

Outstanding at September 30, 2009 

4,368,913 

  $38.51 

Exercisable at September 30, 2009 

3,184,021 

  $42.15 

Expected to vest at September 30, 2009  1,026,327 

  $28.73 

5.7 

4.8 

8.1 

$10,888 

$  3,025 

$  6,815 

The aggregate intrinsic value in the table above represents the total pretax intrinsic value (i.e., for all in-the-money stock 
options, the difference between our closing stock price of $34.86 on the last trading day of fiscal 2009 and the exercise price, 
multiplied by the number of shares) that would have been received by the option holders had all option holders exercised 
their options on the last trading day of fiscal 2009.  The total intrinsic value of options exercised was $68, $871 and $1,863 
for fiscal 2009, 2008 and 2007, respectively.   

The total cash received from options exercised was $680, $3,128 and $6,124 for fiscal 2009, 2008 and 2007, respectively.   
The actual tax benefit realized for the tax deductions from options exercised was $24, $310 and $665 for fiscal 2009, 2008 
and 2007, respectively.  The total fair value of stock options vested during fiscal years 2009, 2008 and 2007 was $12,560, 
$11,848 and $10,204, respectively.  As of September 30, 2009, there was $9,649 of total unrecognized share-based 

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compensation expense related to unvested stock options under the EIP.  That cost is expected to be recognized over a 
weighted-average period of 2.3 years.   

RESTRICTED STOCK 

A summary of the status of the restricted stock awards and restricted stock unit awards outstanding under the EIP as of 

September 30, 2009, and changes during fiscal 2009, are presented below: 

Nonvested at September 30, 2008 

Granted 
Vested 
Forfeited 

Nonvested at September 30, 2009 

Restricted  Weighted 
Average 
Grant Date 
Fair Value 
$34.60 
22.82 
33.22 
33.91 
  $28.38 

Stock  
Awards 
and Units 
234,378 
184,468 
(74,393) 
  (12,850) 
  331,603 

As of September 30, 2009, there was $5,781 of total unrecognized share-based compensation expense related to 
nonvested restricted stock awards and restricted stock units under the EIP.  That cost is expected to be recognized over a 
weighted-average period of 2.5 years.  The total fair values of restricted stock awards and restricted stock units vested during 
fiscal years 2009, 2008 and 2007 were $2,471, $1,449 and $293, respectively.   

13.  SAVINGS PLAN 

Effective in May 2000, we adopted the Cabot Microelectronics Corporation 401(k) Plan (the “401(k) Plan”), which is  

a qualified defined contribution plan, covering all eligible U.S. employees meeting certain minimum age and eligibility 
requirements, as defined by the 401(k) Plan.  Participants may make elective contributions of up to 60% of their eligible 
compensation.  All amounts contributed by participants and earnings on these contributions are fully vested at all times.   
The 401(k) Plan provides for matching and fixed non-elective contributions by the Company.  Prior to April 1, 2009, the 
Company matched 100% of the first four percent of the participant’s eligible compensation and 50% of the next two percent 
of the participant’s eligible compensation that is contributed, subject to limitations required by government regulations.   
On April 1, 2009, in conjunction with certain cost reduction initiatives we implemented in fiscal 2009, the 401(k) Plan  
was amended to suspend the matching contribution made by the Company.  A new amendment to the 401(k) Plan has been 
approved which provides for the reinstatement of the previous matching contribution effective January 1, 2010.  Under the 
401(k) Plan, all U.S. employees, even those who do not contribute to the 401(k) Plan, receive a contribution by the Company 
in an amount equal to four percent of eligible compensation, and thus are participants in the 401(k) Plan.  This four percent 
contribution was not affected by the Company’s cost reduction initiatives.  Participants are 100% vested in all Company 
contributions at all times.  The Company’s expense for the 401(k) Plan totaled $2,813, $3,780 and $3,643 for the fiscal years 
ended September 30, 2009, 2008 and 2007, respectively.  

14.   OTHER INCOME, NET 

Other income, net, consisted of the following:  

Interest income 
Interest expense 
Other income (expense) 
Total other income, net 

2007 

Year Ended September 30, 
2009 
2008 
$1,057  $5,559  $  6,117 
(480) 
(395) 
(365) 
     (93) 
   (2,031) 
     284 
$   599  $5,448  $  3,606 

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The decrease in other income in fiscal 2009 was primarily due to lower interest rates earned on our lower average cash 
and ARS balances compared to fiscal 2008.  We monetized the majority of our investments in ARS during fiscal 2008 and 
reinvested these funds into money market investments which earn interest at lower rates.  The other expense in fiscal 2007 
was primarily related to a $2,052 pretax write-off of our minority equity investment in NanoProducts Corporation recorded  
in the third quarter of fiscal 2007. 

15.  STOCKHOLDERS’ EQUITY  

The following is a summary of our capital stock activity over the past three years: 

September 30, 2006 
     Exercise of stock options 
     Restricted stock under EIP, net of forfeitures 
     Restricted stock under Deposit Share Plan 
     Common stock under ESPP 
     Repurchases of common stock under share repurchase plans 

September 30, 2007 
     Exercise of stock options 
     Restricted stock under EIP, net of forfeitures 
     Restricted stock under Deposit Share Plan 
     Common stock under ESPP 
     Repurchases of common stock under share repurchase plans 

September 30, 2008 
     Exercise of stock options 
     Restricted stock under EIP, net of forfeitures 
     Restricted stock under Deposit Share Plan, net of forfeitures 
     Common stock under ESPP 
     Repurchases of common stock—other 

Number of Shares 

Common 
Stock 

  Treasury 

Stock 

25,254,719 
189,457 
129,371 
8,003 
54,180 

25,635,730 
99,159 
110,767 
6,709 
54,625 

25,906,990 
21,617 
146,881 
9,813 
57,815 

  1,297,167 

330,170 

  1,627,337 

  1,056,472 

  2,683,809 

14,425 

September 30, 2009 

26,143,116 

  2,698,234 

COMMON STOCK 

Each share of common stock entitles the holder to one vote on all matters submitted to a vote of Cabot Microelectronics’ 
stockholders.  Common stockholders are entitled to receive ratably the dividends, if any, as may be declared by the Board of 
Directors.  The number of authorized shares of common stock is 200,000,000 shares. 

STOCKHOLDER RIGHTS PLAN 

In March 2000 the Board of Directors of Cabot Microelectronics approved a stock rights agreement and declared a 
dividend distribution of one right to purchase one one-thousandth of a share of Series A Junior Participating Preferred Stock 
for each outstanding share of common stock to stockholders of record on April 7, 2000.  The rights become exercisable based 
upon certain limited conditions related to acquisitions of stock, tender offers and certain business combination transactions. 

SHARE REPURCHASES 

In October 2005 we announced that our Board of Directors had authorized a share repurchase program for up to $40,000 
of our outstanding common stock.  We completed this share repurchase authorization during the quarter ended December 31, 
2007.  In January 2008, we announced that our Board of Directors had authorized a new share repurchase program for up to 
$75,000 of our outstanding common stock.  Shares are repurchased from time to time, depending on market conditions, in 

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open market transactions, at management’s discretion.  We fund share repurchases from our existing cash balance.  The 
program, which became effective on the authorization date, may be suspended or terminated at any time, at the Company’s 
discretion.  We did not repurchase any shares under the share repurchase program in fiscal 2009.  During fiscal 2008, we 
repurchased a total of 1,056,472 shares of common stock under these programs at a cost of $39,001.  During fiscal 2007,  
we repurchased 330,170 shares of common stock at a cost of $9,995.  For additional information on share repurchases, see 
“Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities”.   

Separate from this share repurchase program, a total of 14,425 shares were purchased during fiscal 2009 pursuant to the 
terms of our EIP as shares withheld from award recipients to cover payroll taxes on the vesting of shares of restricted stock 
granted under the EIP. 

16.  INCOME TAXES 

Income before income taxes was as follows: 

Domestic 
Foreign 
Total 

Taxes on income consisted of the following: 

U.S. federal and state: 
Current 
Deferred 
Total 

Foreign: 
Current 
Deferred 
Total 

Total U.S. and foreign 

Year Ended September 30, 
2009 
2007 
2008 
$  2,909  $44,912  $36,681 
13,713 
12,693 
9,978 
$16,622  $54,890  $49,374 

Year Ended September 30, 
2009 
2007 
2008 

$   2,688  $20,814  $17,821 
   (2,163) 
  (6,176) 
  (6,874) 
$      525  $13,940  $11,645 

$   4,811  $  2,491  $  4,250 
          99 
      (357) 
       121 
4,910 
3,893 
2,612 
$   5,435  $16,552  $15,538 

The provision for income taxes at our effective tax rate differed from the provision for income taxes at the statutory rate 

as follows: 

Federal statutory rate 
U.S. benefits from research and  
        experimentation activities  
State taxes, net of federal effect 
Tax-exempt interest income 
Share-based compensation 
Domestic production deduction 
Other, net 

Provision for income taxes 

Year Ended September 30, 
2009 
2007 
2008 
35.0% 
35.0% 
35.0% 

(5.0) 
0.6 
(1.9) 
2.9 
(0.2) 
   1.3 
32.7% 

(2.2) 
0.7 
(3.2) 
0.5 
(0.5) 
 (0.1) 
30.2% 

(0.9) 
0.6 
(4.1) 
1.1 
(0.2) 
   — 
31.5% 

The increase in the effective tax rate in fiscal 2009 was primarily due to an increase in tax expense related to share-based 

compensation as a percentage of pretax income and a decrease in tax-exempt interest income, partially offset by increased 
research and experimentation tax credits as a percentage of pretax income.   

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On October 1, 2007, we adopted the standards for the accounting for uncertainty in income taxes, which prescribe a 

threshold for the financial statement recognition and measurement of tax positions taken or expected to be taken on a tax return.  
Under these standards, we may recognize the tax benefit of an uncertain tax position only if it is more likely than not that the tax 
position will be sustained by the taxing authorities, based on the technical merits of the position.  Upon adoption, we recognized 
a $59 reduction to our beginning retained earnings balance and we reclassified $450 from current income taxes payable to a non-
current tax liability for unrecognized tax benefits, including interest and penalties.  We made this reclassification to a non-
current liability because settlement was not expected to occur within one year of the balance sheet date.   

The following table presents the changes in the balance of gross unrecognized tax benefits during the fiscal year ended 

September 30, 2009: 

Balance September 30, 2008 
Additions for tax positions relating to the current fiscal year 
Additions for tax positions relating to prior fiscal years 
Settlements with taxing authorities 
Lapse of statute of limitations 
Balance September 30, 2009 

$  316 
— 
79 
(10) 
(136) 
$  249 

  We recognize interest and penalties related to uncertain tax positions as income tax expense in our financial statements.  
Interest and penalties accrued on our Consolidated Balance Sheet were $25 and $41 at September 30, 2009 and 2008, 
respectively, and interest and penalties charged to expense were not material.  During the fiscal quarter ended June 30, 2009,  
we reduced our liability for unrecognized tax benefits by $136 as the federal statute of limitations relating to our fiscal 2005  
tax return had expired, which had a favorable impact on our effective tax rate. 

  We believe the tax periods open to examination by the U.S. federal government include fiscal years 2006 through 2008.  
We believe the tax periods open to examination by U.S. state and local governments include fiscal years 2004 through 2008  
and the tax periods open to examination by foreign jurisdictions include fiscal years 2002 through 2008.  We do not anticipate  
a significant change to the total amount of unrecognized tax benefits within the next 12 months. 

Significant components of deferred income taxes were as follows: 

Deferred tax assets: 

Employee benefits 
Inventory 
Depreciation and amortization 
Product warranty 
Bad debt reserve 
Share-based compensation expense 
Other, net 

Total deferred tax assets 

Deferred tax liabilities: 

Translation adjustment 
Other, net 

Total deferred tax liabilities 

September 30, 
2009 
2008 

2,501 
2,251 
173 
452 
15,783 
408 

$  1,626  $  2,171 
2,420 
1,582 
353 
144 
11,931 
449 
$23,194  $19,050 

$  7,938  $  1,483 
2,024 
$11,247  $  3,507 

3,309 

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17.  COMMITMENTS AND CONTINGENCIES 

LEGAL PROCEEDINGS 

  While we are not involved in any legal proceedings that we believe will have a material impact on our consolidated 
financial position, results of operations or cash flows, we periodically become a party to legal proceedings in the ordinary 
course of business.  For example, in January 2007, we filed a legal action against DuPont Air Products NanoMaterials LLC 
(DA Nano), a CMP slurry competitor, in the United States District Court for the District of Arizona, charging that DA 
Nano’s manufacturing and marketing of CMP slurries infringe five CMP slurry patents that we own.  The affected DA Nano 
products include certain products used for tungsten CMP.  We filed our infringement complaint as a counterclaim in response 
to an action filed by DA Nano in the same court in December 2006 that seeks declaratory relief and alleges non-infringement, 
invalidity and unenforceability regarding some of the patents at issue in our complaint against DA Nano.  DA Nano filed its 
complaint following our refusal of its request that we license to it our patents raised in its complaint.  DA Nano’s complaint 
does not allege any infringement by our products of intellectual property owned by DA Nano.  On July 25, 2008, the District 
Court issued its patent claim construction, or “Markman” Order (“Markman Order”) in the litigation.  In a Markman ruling,  
a district court hearing a patent infringement case interprets and rules on the scope and meaning of disputed patent claim 
language regarding the patents in suit.  We believe that a Markman decision is often a significant factor in the progress and 
outcome of patent infringement litigation.  In the Markman Order, the District Court adopted interpretations that we believe 
are favorable to Cabot Microelectronics on all claim terms that were in dispute in the litigation.  On January 27, 2009, we 
filed a motion for summary judgment on DA Nano’s infringement of certain of the patents at issue in the suit, and on that 
same date, DA Nano filed a motion for summary judgment on non-infringement and invalidity of certain of the patents at 
issue in the suit.  On November 16, 2009, the District Court issued its ruling on all of these respective summary judgment 
motions.  In its summary judgment ruling, the District Court denied a motion filed by DA Nano for summary judgment of 
invalidity of three of our patents at issue in the case, which are fundamental patents in the field of tungsten CMP.  The 
District Court also denied DA Nano’s motion for summary judgment of non-infringement of these patents.  In addition, the 
District Court denied DA Nano’s motion for summary judgment of non-infringement of another one of our patents at issue  
in the suit that is considered to be a foundational CMP patent.  The District Court also denied Cabot Microelectronics’ 
motion for summary judgment of infringement of the tungsten patents, stating that despite the weight of the record on DA 
Nano’s infringement, summary judgment is not the forum to decide issues of fact that remain.  We believe that the recently 
issued summary judgment ruling supports our position on the merits of the case with regard to the evidence of DA Nano’s 
infringement of our tungsten patents and the lack of evidence of invalidity of these patents.  Although no trial date has yet 
been set, as part of the summary judgment ruling, the District Court has ordered the parties to submit pretrial filings by 
December 16, 2009, and as a result of this and the ruling on the summary judgment motions, we now expect the case to 
proceed in a timely manner, with trial possibly scheduled for the first half of calendar 2010.  While the outcome of this  
and any legal matter cannot be predicted with certainty, we continue to believe that our claims and defenses in the pending 
action are meritorious, and we intend to continue to pursue and defend them vigorously.    

PRODUCT WARRANTIES  

  We maintain a warranty reserve that reflects management’s best estimate of the cost to replace product that does not 
meet customers’ specifications and performance requirements, and costs related to such replacement.  The warranty reserve is 
based upon a historical product replacement rate, adjusted for any specific known conditions or circumstances.  Additions 
and deductions to the warranty reserve are recorded in cost of goods sold.  Our warranty reserve requirements changed during 
fiscal 2009 as follows: 

Balance as of September 30, 2008 
Reserve for product warranty during the reporting period 
Settlement of warranty 
Balance as of September 30, 2009 

$     863 
1,067 
    (1,570) 
$     360 

INDEMNIFICATION 

In the normal course of business, we are a party to a variety of agreements pursuant to which we may be obligated to 
indemnify the other party with respect to certain matters.  Generally, these obligations arise in the context of agreements 
entered into by us, under which we customarily agree to hold the other party harmless against losses arising from items such 
as a breach of certain representations and covenants including title to assets sold, certain intellectual property rights and 

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certain environmental matters.  These terms are common in the industries in which we conduct business.  In each of these 
circumstances, payment by us is subject to certain monetary and other limitations and is conditioned on the other party 
making an adverse claim pursuant to the procedures specified in the particular agreement, which typically allow us to 
challenge the other party’s claims. 

  We evaluate estimated losses for such indemnifications under the accounting standards related to contingencies and 
guarantees.  We consider such factors as the degree of probability of an unfavorable outcome and the ability to make a 
reasonable estimate of the amount of loss.  To date, we have not experienced material costs as a result of such obligations 
and, as of September 30, 2009, have not recorded any liabilities related to such indemnifications in our financial statements 
as we do not believe the likelihood of such obligations is probable. 

LEASE COMMITMENTS 

  We lease certain vehicles, warehouse facilities, office space, machinery and equipment under cancelable and 
noncancelable leases, all of which expire within four years from now and may be renewed by us.  Lease commitments also 
include certain costs associated with our pad finishing operation located at Taiwan Semiconductor Manufacturing Company, 
which are accounted for as operating lease payments.  Rent expense under such arrangements during fiscal 2009, 2008 and 
2007 totaled $1,883, $1,726 and $1,612, respectively. 

In December 2001 we entered into a fumed alumina supply agreement with Cabot Corporation under which we agreed  
to pay Cabot Corporation for the expansion of a fumed alumina manufacturing facility in Tuscola, Illinois.  The arrangement 
for the facility has been treated as a capital lease for accounting purposes and the present value of the minimum quarterly 
payments resulted in an initial $9,776 lease obligation and related leased asset.  The initial term of the agreement expired  
in December 2006, but it was renewed for another five-year term ending in December 2011.   

Future minimum rental commitments under noncancelable leases as of September 30, 2009 are as follows: 

Fiscal Year 
2010 
2011 
2012 
2013 
2014 
Thereafter 

Amount related to interest 
Capital lease obligation 

  Operating  Capital 
$1,354 
1,354 
10 
3 
— 
— 

$2,252 
1,789 
1,239 
381 
382 
428 
$6,471 

2,721 
    (203) 
  $2,518 

PURCHASE OBLIGATIONS 

Purchase obligations include our take-or-pay arrangements with suppliers, and purchase orders and other obligations 

entered into in the normal course of business regarding the purchase of goods and services.   

  We purchase fumed silica primarily under a fumed silica supply agreement with Cabot Corporation that became effective 
in January 2004, and was amended in September 2006 and in April 2008, the latter of which extended the termination date of 
the agreement from December 2009 to December 2012 and also changed the pricing and some other non-material terms of 
the agreement to the benefit of both parties.  The agreement will automatically renew unless either party gives notice of non-
renewal.  We are generally obligated to purchase fumed silica for at least 90% of our six-month volume forecast for certain  
of our slurry products, to purchase certain non-material minimum quantities every six months, and to pay for the shortfall if 
we purchase less than these amounts.  We currently anticipate meeting minimum forecasted purchase volume requirements.  
We also operate under a fumed alumina supply agreement with Cabot Corporation which runs through December 2011.  
Purchase obligations include $6,381 of contractual commitments for fumed silica and fumed alumina under these contracts.  

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18.  EARNINGS PER SHARE 

The standards of accounting for earnings per share require companies to provide a reconciliation of the numerator and 

denominator of the basic and diluted earnings per share computations.  Basic and diluted earnings per share were calculated  
as follows: 

Year Ended September 30, 
2008 

2007 

2009 

Numerator: 

Earnings available to common shares  

$       11,187  $       38,338  $       33,836 

Denominator: 
  Weighted-average common shares 

(Denominator for basic calculation) 
  Weighted-average effect of dilutive securities: 

Share-based compensation 

  Diluted weighted-average common shares 
(Denominator for diluted calculation) 

23,078,967 

23,315,072 

23,748,158 

17,457 
23,096,424 

33,195 
23,348,267 

6,044 
23,754,202 

Earnings per share: 
  Basic 
  Diluted 

$          0.48 
$          0.48 

$          1.64  $           1.42 
$          1.64  $           1.42 

For the twelve months ended September 30, 2009, 2008, and 2007, approximately 3.9 million, 2.7 million and 3.0 
million shares, respectively, attributable to outstanding stock options were excluded from the calculation of diluted earnings 
per share because the exercise price of the options was greater than the average market price of our common stock and, 
therefore, their inclusion would have been anti-dilutive. 

19.  FINANCIAL INFORMATION BY INDUSTRY SEGMENT AND GEOGRAPHIC AREA 

  We operate predominantly in one industry segment–the development, manufacture, and sale of CMP consumables.  

Revenues are attributed to the United States and foreign regions based upon the customer location and not the geographic 

location from which our products were shipped.  Financial information by geographic area was as follows: 

Year Ended September 30, 
2008 

2009 

2007 

Revenue: 

United States  
Asia 
Europe 

Total 

Property, plant and equipment, net: 

United States  
Asia 
Europe 

Total 

$  46,781 
227,142 
17,449 
$291,372 

$  62,462 
60,319 
1 
$122,782 

$  71,395 
276,387 
27,287 
$375,069 

$  70,972 
44,864 
7 
$115,843 

$  70,110 
239,254 
28,841 
$338,205 

$  75,618 
41,786 
1,050 
$118,454 

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The following table shows revenue from sales to customers in foreign countries that accounted for more than ten percent 

of our total revenue in fiscal 2009, 2008 and 2007: 

Year Ended September 30, 
2009 
2007 
2008 

Revenue: 

Taiwan  
Japan 
Korea 
   *  Denotes less than ten percent of total 

$92,023  $109,282  $97,583 
44,535 
47,642 
44,307 
* 
43,653 
30,873 

The following table shows net property, plant and equipment in foreign countries that accounted for more than ten 

percent of our total net property, plant and equipment in fiscal 2009, 2008 and 2007: 

Property, plant and equipment, net: 

Japan 
Taiwan 
   *  Denotes less than ten percent of total 

Year Ended September 30, 
2007 
2008 
2009 

$43,362  $42,732  $37,850 
* 
16,430 

* 

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SELECTED QUARTERLY OPERATING RESULTS 

The following table presents our unaudited financial information for the eight quarterly periods ended September 30, 
2009.  This unaudited financial information has been prepared in accordance with accounting principles generally accepted in 
the United States of America, applied on a basis consistent with the annual audited financial statements and in the opinion of 
management, include all necessary adjustments, which consist only of normal recurring adjustments necessary to present 
fairly the financial results for the periods.  The results for any quarter are not necessarily indicative of results for any future 
period. 

CABOT MICROELECTRONICS CORPORATION 
SELECTED QUARTERLY OPERATING RESULTS 
(Unaudited and in thousands, except per share amounts) 

Sept. 30, 
2009 

  June 30,    March 31,    Dec. 31, 
2009 

2009 

2008 

  Sept. 30,    June 30, 

  March 31,    Dec. 31, 

2008 

2008 

2008 

2007 

Revenue 
Cost of goods sold 

$96,513     $86,443     $45,399     $63,017     $90,156     $97,047     $94,488     $93,378  
48,605  

49,775     46,143    

51,638    

52,212    

32,689    

34,311    

48,141 

Gross profit 

46,738     40,300    

12,710    

28,706    

42,015    

45,409    

42,276    

44,773  

Operating expenses: 
    Research, development and technical 
    Selling and marketing 
    General and administrative 
    Purchased in-process research  

and development 
Total operating expenses 

12,514     10,901    
5,207   
5,798 
9,043   
9,673 

12,621    
5,261 
10,590 

12,114    
5,973 
11,326 

12,572    
7,914 
11,258 

12,730    
7,176 
12,642 

12,432    
6,907 
12,856 

11,421  
6,284  
10,839  

— 
27,985 

 (90)   
  25,061   

1,500    
29,972 

—    

—    

—    

29,413 

31,744 

32,548 

 — 
32,195 

— 
28,544  

Operating income (loss) 
Other income (expense), net 

18,753     15,239    
(42)   

(712)   

(17,262)   
477 

(707)   
876 

10,271    
885 

12,861    
1,239 

10,081    
1,689 

16,229  
1,635  

Income (loss) before income taxes 
Provision (benefit) for income taxes 

18,041     15,197    
6,183   
5,871 

(16,785)   
(6,672)   

169    
53 

11,156    
2,939 

14,100    
4,120 

11,770    
3,828 

17,864  
5,665  

Net income (loss) 

$12,170     $  9,014     $(10,113)    $     116     $  8,217     $  9,980     $  7,942     $12,199  

Basic earnings (loss) per share 

$    0.53     $    0.39     $    (0.44)    $    0.01     $    0.36     $    0.43     $    0.34     $    0.51  

Weighted average basic shares  

outstanding 

23,137     23,113    

23,107    

23,020    

23,023    

23,132    

23,402    

23,716  

Diluted earnings (loss) per share 

$    0.52     $    0.39     $    (0.44)    $    0.01     $    0.36     $    0.43     $    0.34     $    0.51  

Weighted average diluted shares 

outstanding 

23,248     23,154    

23,107    

23,026    

23,085    

23,163    

23,416    

23,768  

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SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS 

The following table sets forth activities in our allowance for doubtful accounts: 

Allowance For Doubtful 
Accounts 

Year ended: 
September 30, 2009 
September 30, 2008 
September 30, 2007 

Balance At 
Beginning of 
Year 

$403 
635 
551 

Additions Charged 
To Expenses 

Deductions and 
Adjustments 

Balance At 
End Of Year 

$856 
(99) 
87 

$   18 
(133) 
(3) 

$1,277 
403 
635 

  We maintain a warranty reserve that reflects management’s best estimate of the cost to replace product that does not 
meet customers’ specifications and performance requirements, and costs related to such replacement.  The warranty reserve is 
based upon a historical product replacement rate, adjusted for any specific known conditions or circumstances.  Additions 
and deductions to the warranty reserve are recorded in cost of goods sold.  Charges to expenses and deductions, shown 
below, represent the net change required to maintain an appropriate reserve.   

Warranty Reserves 
Year ended: 
September 30, 2009 
September 30, 2008 
September 30, 2007 

Balance At 
Beginning 
of Year 

$863 
527 
924 

MANAGEMENT RESPONSIBILITY 

Reserve For 
Product Warranty 
During the 
Reporting Period 

  Adjustments To  

Pre-existing 
Warranty 
Reserve 

Settlement of 
Warranty 

Balance At 
End Of 
Year 

$1,067 
962 
106 

$      — 
— 
(314) 

$(1,570) 
(626) 
(189) 

$360 
863 
527 

The accompanying consolidated financial statements were prepared by the Company in conformity with accounting 
principles generally accepted in the United States of America.  The Company’s management is responsible for the integrity 
of these statements and of the underlying data, estimates and judgments.   

The Company’s management establishes and maintains a system of internal accounting controls designed to provide 

reasonable assurance that its assets are safeguarded from loss or unauthorized use, transactions are properly authorized and 
recorded, and that financial records can be relied upon for the preparation of the consolidated financial statements.  This 
system includes written policies and procedures, a code of business conduct and an organizational structure that provides for 
appropriate division of responsibility and the training of personnel.  This system is monitored and evaluated on an ongoing 
basis by management in conjunction with its internal audit function.  

The Company’s management assesses the effectiveness of its internal control over financial reporting on an annual basis. 

In making this assessment, management uses the criteria set forth by the Committee of Sponsoring Organizations of the 
Treadway Commission in Internal Control–Integrated Framework.  Management acknowledges, however, that all internal 
control systems, no matter how well designed, have inherent limitations and can provide only reasonable assurance with 
respect to financial statement preparation and presentation.  In addition, the Company’s independent registered public 
accounting firm evaluates the Company’s internal control over financial reporting and performs such tests and other 
procedures as it deems necessary to reach and express an opinion on the fairness of the financial statements. 

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In addition, the Audit Committee of the Board of Directors provides general oversight responsibility for the financial 
statements.  Composed entirely of Directors who are independent and not employees of the Company, the Committee meets 
periodically with the Company’s management, internal auditors and the independent registered public accounting firm to 
review the quality of financial reporting and internal controls, as well as results of auditing efforts.  The internal auditors  
and independent registered public accounting firm have full and direct access to the Audit Committee, with and without 
management present. 

/s/ William P. Noglows 

William P. Noglows 
Chief Executive Officer 

/s/ William S. Johnson 

William S. Johnson 
Chief Financial Officer 

/s/ Thomas S. Roman 

Thomas S. Roman 
Principal Accounting Officer 

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ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL 
DISCLOSURE 

None. 

ITEM 9A. CONTROLS AND PROCEDURES 

EVALUATION OF DISCLOSURE CONTROLS AND PROCEDURES 

Our management, with the participation of our Chief Executive Officer (CEO) and Chief Financial Officer (CFO),  

has evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in  
Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (“the Exchange Act”)), as of September 30, 2009.  
Based on that evaluation, our CEO and CFO have concluded that our disclosure controls and procedures were effective to 
provide reasonable assurance that information required to be disclosed in our Exchange Act reports is recorded, processed, 
summarized and reported within the time periods specified by the SEC, and that material information relating to the 
Company is made known to senior management, including the CEO and CFO, as appropriate to allow timely decisions 
regarding required disclosure. 

  While we believe the present design of our disclosure controls and procedures is effective enough to make known to our 
senior management in a timely fashion all material information concerning our business, we intend to continue to improve 
the design and effectiveness of our disclosure controls and procedures to the extent necessary in the future to provide our 
senior management with timely access to such material information, and to correct any deficiencies that we may discover  
in the future, as appropriate. 

MANAGEMENT’S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING 

Our management is responsible for establishing and maintaining adequate internal control over financial reporting for  
the Company.  Internal control over financial reporting is defined in Rule 13a-15(f) or Rule 15d-15(f) promulgated under  
the Securities Exchange Act of 1934 as a process designed by, or under the supervision of, the Company’s CEO and CFO  
to provide reasonable assurance regarding the reliability of our financial reporting and the preparation of financial statements 
for external purposes in accordance with generally accepted accounting principles in the United States of America.  Internal 
control over financial reporting includes policies and procedures that: pertain to the maintenance of records that in reasonable 
detail accurately and fairly reflect our transactions and dispositions of the Company’s assets; provide reasonable assurance 
that transactions are recorded as necessary for preparation of our financial statements in accordance with generally accepted 
accounting principles; provide reasonable assurance that receipts and expenditures of Company assets are made in 
accordance with management authorization; and provide reasonable assurance that unauthorized acquisition, use or 
disposition of Company assets that could have a material effect on our financial statements would be prevented or detected 
on a timely basis.  Because of its inherent limitations, internal control over financial reporting may not prevent or detect 
misstatements.  Also, 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. 

Our management evaluated the effectiveness of our internal control over financial reporting based on the framework in 
Internal Control–Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission 
(COSO).  Based on this evaluation, our management concluded that the Company’s internal control over financial reporting 
was effective as of September 30, 2009.  The effectiveness of the Company’s internal control over financial reporting as of 
September 30, 2009 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as 
stated in their attestation report which appears under Item 8 of this Annual Report on Form 10-K. 

We acquired Epoch Material Co., Ltd. (Epoch) in a business combination on February 27, 2009, midway through our 
fiscal year.  Subsequent to the acquisition, we applied certain corporate-level controls to elements of Epoch’s internal control 
over financial reporting.  Management has excluded from its assessment of internal control over financial reporting those 
elements that were not subject to our internal controls.  The excluded elements represent controls over accounts that are 3%  
and 4% of consolidated total assets and consolidated net sales, respectively, as of and for the fiscal year ended September 30, 
2009.  We will report on our assessment of our combined operations within one year, as permitted by the Sarbanes-Oxley Act 
of 2002 and the applicable SEC rules and regulations concerning business combinations.   

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CHANGES IN INTERNAL CONTROL OVER FINANCIAL REPORTING 

There were no changes in our internal control over financial reporting that occurred during our most recent fiscal quarter 

that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. 

INHERENT LIMITATIONS ON EFFECTIVENESS OF CONTROLS 

Because of inherent limitations, our disclosure controls or our internal control over financial reporting may not prevent 

all errors and all fraud.  A control system, no matter how well conceived and operated, can provide only reasonable, not 
absolute, assurance that the objectives of the control system are met.  Further, the design of a control system must reflect the 
fact that there are resource constraints, and the benefits of controls must be considered relative to their costs.  Because of the 
inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and 
instances of fraud, if any, within the Company have been detected.  These inherent limitations include the realities that 
judgments in decision-making can be faulty, and that breakdowns can occur because of a simple error or mistake.  
Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people or by 
management override of the controls.  The design of any system of controls also is based in part upon certain assumptions 
about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals 
under all potential future conditions; over time, controls may become inadequate because of changes in conditions, or the 
degree of compliance with policies or procedures may deteriorate.  Because of the inherent limitations in a cost-effective 
control system, misstatements due to error or fraud may occur and not be detected. 

ITEM 9B. OTHER INFORMATION 

None. 

PART III 

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE 

The information required by Item 10 of Form 10-K with respect to identification of directors, the existence of a 

separately-designated standing audit committee, identification of members of such committee and identification of an audit 
committee financial expert is incorporated by reference from the information contained in the sections captioned “Election  
of Directors” and “Board Structure and Compensation” in our definitive Proxy Statement for the Annual Meeting of 
Stockholders to be held March 2, 2010 (the “Proxy Statement”).  In addition, for information with respect to the executive 
officers of our Company, see “Executive Officers” at the end of Part I of this Form 10-K and the section captioned “Section 
16(a) Beneficial Ownership Reporting Compliance” in the Proxy Statement.  Information required by Item 405 of Regulation 
S-K is incorporated by reference from the information contained in the section captioned “Section 16(a) Beneficial 
Ownership Reporting Compliance” in the Proxy Statement. 

  We have adopted a code of business conduct for all of our employees and directors, including our principal executive 
officer, other executive officers, principal financial officer and senior financial personnel.  A copy of our code of business 
conduct is available free of charge on our Company website at www.cabotcmp.com.  We intend to post on our website any 
material changes to, or waivers from our code of business conduct, if any, within two days of any such event.  

ITEM 11. EXECUTIVE COMPENSATION 

The information required by Item 11 of Form 10-K is incorporated by reference from the information contained in the 

section captioned “Executive Compensation” in the Proxy Statement. 

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ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND 
RELATED STOCKHOLDER MATTERS 

EQUITY COMPENSATION PLAN INFORMATION 

Shown below is information as of September 30, 2009, with respect to the shares of common stock that may be issued 

under Cabot Microelectronics’ existing equity compensation plans.  

(a) 

(b) 

(c) 

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

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

  Number of securities remaining 

available for future issuance under 
equity compensation plans (excluding 
securities reflected in column (a))  

4,451,617 (1) 

$38.51 (1) 

3,515,549 (2) 

— 

— 

— 

Plan category 
Equity compensation 
plans approved by 
security holders 

Equity compensation 
plans not approved 
by security holders 

Total 

4,451,617 (1) 

$38.51 (1) 

3,515,549 (2) 

(1)  Column (a) includes 43,671 shares that non-employee directors, who defer their compensation under our Directors’ 
Deferred Compensation Plan, have the right to acquire pursuant thereto, and 39,033 shares that non-U.S. employees 
have the right to acquire upon the vesting of the equivalent restricted stock units that they have been awarded under 
our equity incentive plan.  Column (b) excludes both of these from the weighted average exercise price. 
(2)  Column (c) includes 545,272 shares available for future issuance under our Employee Stock Purchase Plan.      

The other information required by Item 12 of Form 10-K is incorporated by reference from the information contained in 

the section captioned “Stock Ownership” in the Proxy Statement. 

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE 

The information required by Item 13 of Form 10-K is incorporated by reference from the information contained in the 

section captioned “Certain Relationships and Related Transactions” in the Proxy Statement. 

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES 

The information required by Item 14 of Form 10-K is incorporated by reference from the information contained in the 

section captioned “Fees of Independent Auditors and Audit Committee Report” in the Proxy Statement. 

PART IV 

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES  

(a)  The following Financial Statements and Financial Statement Schedule are included in Item 8 herein:  

1.  Financial Statements: 

Report of Independent Registered Public Accounting Firm 
Consolidated Statements of Income for the years ended September 30, 2009, 2008 and 2007 
Consolidated Balance Sheets at September 30, 2009 and 2008  
Consolidated Statements of Cash Flows for the years ended September 30, 2009, 2008 and 2007 

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 Consolidated Statements of Changes in Stockholders’ Equity for the years ended September 30, 2009, 2008 and 2007 
Notes to the Consolidated Financial Statements 

2.  Financial Statement Schedule:  Schedule II—Valuation and Qualifying Accounts 

3.  Exhibits–The following exhibits are filed as part of, or incorporated by reference into, this Report on Form 10-K: 

Exhibit    
Number  

Description 

3.2 (15)  

Amended and Restated By-Laws of Cabot Microelectronics Corporation. 

3.3 (1) 

3.4 (2) 

4.1 (2) 

4.2 (3) 

4.3 (4) 

10.1 (16) 

10.2 (16) 

10.4 (16) 

10.5 (16) 

10.6 (16) 

Form of Amended and Restated Certificate of Incorporation of Cabot Microelectronics 
Corporation. 

Form of Certificate of Designation, Preferences and Rights of Series A Junior Participating 
Preferred Stock. 

Form of Cabot Microelectronics Corporation Common Stock Certificate. 

Rights Agreement. 

Amendment to Rights Agreement. 

Second Amended and Restated Cabot Microelectronics Corporation 2000 Equity Incentive Plan, 
as amended and restated September 23, 2008.* 

Form of Second Amended and Restated Cabot Microelectronics Corporation 2000 Equity 
Incentive Plan Non-Qualified Stock Option Grant Agreement (directors).* 

Form of Second Amended and Restated Cabot Microelectronics Corporation 2000 Equity 
Incentive Plan Non-Qualified Stock Option Grant Agreement (U.S. employees (including 
executive officers)).* 

Form of Second Amended and Restated Cabot Microelectronics Corporation 2000 Equity 
Incentive Plan Restricted Stock Award Agreement (employees (including executive officers)).* 

Form of Second Amended and Restated Cabot Microelectronics Corporation 2000 Equity 
Incentive Plan Restricted Stock Award Agreement for Directors.* 

10.15 (18) 

Cabot Microelectronics Corporation 2007 Employee Stock Purchase Plan, as Amended and 
Restated January 19, 2009.* 

10.22 (16) 

Cabot Microelectronics Corporation 401(k) Plan, as amended.* 

10.23 (16) 

Form of Amended and Restated Change in Control Severance Protection Agreement.** 

10.28 (16) 

Directors’ Deferred Compensation Plan, as amended September 23, 2008.*   

10.29 (6) 

Amended and Restated Credit Agreement dated November 24, 2003 among Cabot Microelectronics 
Corporation, Various Financial Institutions and LaSalle Bank National Association, as 
Administrative Agent, and National City Bank of Michigan/Illinois, as Syndication Agent. 

10.30 (5) 

Form of Deposit Share Agreement.*** 

10.31 (5) 

Amendment No. 1 to Fumed Metal Oxide Agreement, between Cabot Microelectronics Corporation 
and Cabot Corporation.+ 

10.32 (5) 

Fumed Alumina Supply Agreement.+ 

10.33 (16) 

Adoption Agreement, as amended September 23, 2008, of Cabot Microelectronics Corporation 
Supplemental Employee Retirement Plan.* 

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10.34 (10) 

Code of Business Conduct. 

10.36 (6) 

Directors’ Cash Compensation Umbrella Program.* 

10.37 (7) 

Employment and Transition Agreement dated November 3, 2003.* 

10.38 (7) 

Employment Offer Letter dated November 2, 2003.* 

10.39 (7) 

Employment Offer Letter dated November 17, 2003.* 

10.40 (8) 

10.41 (8) 

Amendment No. 2 to Fumed Metal Oxide Agreement, between Cabot Microelectronics Corporation 
and Cabot Corporation. 

Amendment No. 3 to Fumed Metal Oxide Agreement, between Cabot Microelectronics Corporation 
and Cabot Corporation. 

10.42 (8) 

Fumed Silica Supply Agreement.+ 

10.43 (8) 

General Release, Waiver and Covenant Not to Sue.* 

10.44 (9) 

Amendment as of January 17, 2005 to Four Grant Agreements for Non-Qualified Stock Option 
Awards with Grant Dates of March 13, 2001, March 12, 2002, March 11, 2003 and March 9, 2004, 
respectively.* 

10.45 (9) 

Amendment as of January 29, 2005 to Three Grant Agreements for Non-Qualified Stock Option 
Awards with Grant Dates of March 13, 2001, March 12, 2002 and March 11, 2003, respectively.* 

10.46 (13) 

Non-Employee Directors’ Compensation Summary as of March, 2007.* 

10.47 (11) 

10.48 (11) 

10.49 (12) 

10.50 (14) 

Asset Purchase Agreement by and among Cabot Microelectronic Corporation, QED Technologies 
International, Inc., QED Technologies, Inc., Don Golini and Lowell Mintz dated June 15, 2006. 

Technology Asset Purchase Agreement dated June 15, 2006 by and among Cabot Microelectronics 
Corporation, QED Technologies International, Inc., and Byelocorp Scientific, Inc.  

Amendment No. 1 to Fumed Silica Supply Agreement, between Cabot Microelectronics Corporation 
and Cabot Corporation.+ 

Amendment No. 2 to Fumed Silica Supply Agreement, between Cabot Microelectronics 
Corporation and Cabot Corporation.+ 

10.51 (16) 

First Amendment to the Employment Offer Letter dated November 2, 2003.* 

10.52 (16) 

First Amendment to the Employment Offer Letter dated November 23, 2003.* 

10.53 (16) 

Cabot Microelectronics Corporation Supplemental Employee Retirement Plan, as amended.* 

10.54 (16) 

Cabot Microelectronics Corporation Annual Incentive and Sales Incentive Programs.* 

10.55 (17) 

10.56 (18) 

Share Purchase Agreement dated December 19, 2008 among Cabot Microelectronics Global 
Corporation, Eternal Chemical Co., Ltd., Major Co-Sellers, and Epoch Material Co., Ltd.+ 

First Amendment to Amended and Restated Credit Agreement dated October 30, 2008 among 
Cabot Microelectronics Corporation, Bank of America, N.A., as Administrative Agent, Issuing 
Bank, and Swing Line Bank, and JPMorgan Chase Bank, N.A., as Syndication Agent. 

10.57 (19) 

Adoption Agreement, as amended April 1, 2009, of Cabot Microelectronics Corporation 401(k) 
Plan.* 

21.1 

23.1 

Subsidiaries of Cabot Microelectronics Corporation. 

Consent of Independent Registered Public Accounting Firm. 

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24.1 

31.1 

31.2 

32.1 

Power of Attorney. 

Certification of Chief Executive Officer as adopted pursuant to Section 302 of the Sarbanes-Oxley 
Act of 2002. 

Certification of Chief Financial Officer as adopted pursuant to Section 302 of the  Sarbanes-Oxley 
Act of 2002. 

Certification  pursuant  to  18  U.S.C.  Section  1350,  as  adopted  pursuant  to  Section  906  of  the 
Sarbanes-Oxley Act of 2002. 

(1)   Filed as an exhibit to, and incorporated by reference from the Registrant’s Registration Statement on Form S-1 

(No. 333-95093) filed with the Commission on March 27, 2000. 

(2)   Filed as an exhibit to, and incorporated by reference from the Registrant’s Registration Statement on Form S-1 

(No. 333-95093) filed with the Commission on April 3, 2000. 

(3)   Filed as an exhibit to, and incorporated by reference from the Registrant’s Registration Statement on Form S-1 

(No. 333-95093) filed with the Commission on April 4, 2000. 

(4)   Filed as an exhibit to, and incorporated by reference from the Registrant’s Current Report on Form 8-K (No. 000-

30205) filed with the Commission on October 6, 2000. 

(5)   Filed as an exhibit to, and incorporated by reference from the Registrant’s Quarterly Report on Form 10-Q (No. 

000-30205) filed with the Commission on February 12, 2002. 

(6)   Filed as an exhibit to, and incorporated by reference from the Registrant’s Annual Report on Form 10-K (No. 000-

30205) filed with the Commission on December 10, 2003. 

(7)   Filed as an exhibit to, and incorporated by reference from the Registrant’s Quarterly Report on Form 10-Q (No. 

000-30205) filed with the Commission on February 12, 2004. 

(8)   Filed as an exhibit to, and incorporated by reference from the Registrant’s Quarterly Report on Form 10-Q (No. 

000-30205) filed with the Commission on May 7, 2004. 

(9)   Filed as an exhibit to, and incorporated by reference from the Registrant’s Quarterly Report on Form 10-Q (No. 

000-30205) filed with the Commission on May 9, 2005. 

(10) Filed as an exhibit to, and incorporated by reference from the Registrant’s Annual Report on Form 10-K (No. 000-

30205) filed with the Commission on December 7, 2005. 

(11) Filed as an exhibit to, and incorporated by reference from the Registrant’s Quarterly Report on Form 10-Q (No. 

000-30205) filed with the Commission on August 9, 2006. 

(12) Filed as an exhibit to, and incorporated by reference from the Registrant’s Annual Report on Form 10-K (No. 000-

30205) filed with the Commission on November 29, 2006. 

(13) Filed as an exhibit to, and incorporated by reference from the Registrant’s Current Report on Form 8-K (No. 000-

30205) filed with the Commission on March 8, 2007. 

(14) Filed as an exhibit to, and incorporated by reference from the Registrant’s Quarterly Report on Form 10-Q (No. 

000-30205) filed with the Commission on August 8, 2008. 

(15) Filed as an exhibit to, and incorporated by reference from the Registrant’s Current Report on Form 8-K (No. 000-

30205) filed with the Commission on September 24, 2008. 

(16) Filed as an exhibit to, and incorporated by reference from the Registrant’s Annual Report on Form 10-K (No. 000-

30205) filed with the Commission on November 25, 2008. 

72 

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(17) Filed as an exhibit to, and incorporated by reference from the Registrant’s Quarterly Report on Form 10-Q (No. 

000-30205) filed with the Commission on February 5, 2009. 

(18) Filed as an exhibit to, and incorporated by reference from the Registrant’s Quarterly Report on Form 10-Q (No. 

000-30205) filed with the Commission on May 8, 2009. 

(19) Filed as an exhibit to, and incorporated by reference from the Registrant’s Quarterly Report on Form 10-Q (No. 

000-30205) filed with the Commission on August 7, 2009. 

*     Management contract, or compensatory plan or arrangement.  

**  Substantially similar change in control severance protection agreements have been entered into with 
William P. Noglows, H. Carol Bernstein, William S. Johnson, Daniel J. Pike, Thomas S. Roman, Stephen 
R. Smith, Clifford L. Spiro, Adam F. Weisman, Daniel S. Wobby, Yumiko Damashek and David H. Li, 
with differences only in the amount of payments and benefits to be received by such persons. 

***  Substantially similar deposit share agreements have been entered into with William P. Noglows, H. 
Carol Bernstein, William S. Johnson, Daniel J. Pike, Thomas S. Roman, Stephen R. Smith, Clifford L. 
Spiro, Adam F. Weisman and Daniel S. Wobby with differences only in the amount of initial deposit made 
and deposit shares purchased by such persons. 

+  This Exhibit has been filed separately with the Commission pursuant to the grant of a confidential 
treatment request.  The confidential portions of this Exhibit have been omitted and are marked by an 
asterisk. 

73 

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Pursuant to the requirements of section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused 

this report to be signed on its behalf by the undersigned thereunto duly authorized: 

SIGNATURES 

Date: November 24, 2009 

Date: November 24, 2009 

Date: November 24, 2009 

CABOT MICROELECTRONICS CORPORATION 

/s/ WILLIAM P. NOGLOWS  
William P. Noglows  
Chairman of the Board, President and Chief Executive Officer 
[Principal Executive Officer] 

/s/ WILLIAM S. JOHNSON 
William S. Johnson  
Vice President and Chief Financial Officer 
[Principal Financial Officer] 

/s/ THOMAS S. ROMAN 
Thomas S. Roman 
Corporate Controller 
[Principal Accounting Officer] 

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following 

persons on behalf of the registrant and in the capacities and on the dates indicated: 

Date: November 24, 2009 

Date: November 24, 2009   

Date: November 24, 2009   

Date: November 24, 2009   

Date: November 24, 2009   

Date: November 24, 2009   

  /s/ WILLIAM P. NOGLOWS 
  William P. Noglows  
Chairman of the Board, President and Chief Executive Officer 
[Director] 

/s/ ROBERT J. BIRGENEAU* 
Robert J. Birgeneau 
[Director] 

/s/ JOHN P. FRAZEE, JR.*  
John P. Frazee, Jr. 
[Director] 

/s/ H. LAURANCE FULLER*  
H. Laurance Fuller 
[Director] 

/s/ BARBARA A. KLEIN*  
Barbara A. Klein 
[Director] 

/s/ EDWARD J. MOONEY*             
Edward J. Mooney 
[Director] 

74 

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Date: November 24, 2009   

Date: November 24, 2009   

/s/ STEVEN V. WILKINSON*  
Steven V. Wilkinson 
[Director] 

/s/ BAILING XIA*             
Bailing Xia 
[Director] 

* by H. Carol Bernstein as Attorney-in-fact pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act 
of 1934. 

75 

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Exhibit 31.1 

     I, William P. Noglows, certify that: 

CERTIFICATION 

     1. I have reviewed this annual report on Form 10-K of Cabot Microelectronics Corporation; 

     2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report; 

     3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 

in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the 
periods presented in this report; 

     4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and 

procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as 
defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: 

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be 
designed under our supervision, to ensure that material information relating to the registrant, including its 
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in 
which this report is being prepared; 

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting 
to be designed under our supervision, 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; 

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our 
conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered 
by this report based on such evaluation; and 

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during the registrant’s fourth fiscal quarter that has materially affected, or is reasonably likely to materially 
affect, the registrant’s internal control over financial reporting; and 

     5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control 
over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors: 

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial 
reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize 
and report financial information; and 

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in 

the registrant’s internal control over financial reporting. 

Date: November 24, 2009 

/s/ WILLIAM P. NOGLOWS 
William P. Noglows  
Chief Executive Officer 

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Exhibit 31.2 

     I, William S. Johnson, certify that: 

CERTIFICATION 

     1. I have reviewed this annual report on Form 10-K of Cabot Microelectronics Corporation; 

     2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report; 

     3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 

in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the 
periods presented in this report; 

     4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and 

procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as 
defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: 

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be 
designed under our supervision, to ensure that material information relating to the registrant, including its 
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in 
which this report is being prepared; 

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting 
to be designed under our supervision, 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; 

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our 
conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered 
by this report based on such evaluation; and 

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during the registrant’s fourth fiscal quarter that has materially affected, or is reasonably likely to materially 
affect, the registrant’s internal control over financial reporting; and 

     5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control 
over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors: 

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial 
reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize 
and report financial information; and 

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in 

the registrant’s internal control over financial reporting. 

Date: November 24, 2009 

/s/ WILLIAM S. JOHNSON 
William S. Johnson  
Chief Financial Officer 

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Exhibit 32.1 

CERTIFICATION PURSUANT TO 
18 U.S.C. SECTION 1350, 
AS ADOPTED PURSUANT TO 
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 

In connection with the Annual Report of Cabot Microelectronics Corporation (the “Company”) on Form 10-K for the fiscal 
year ended September 30, 2009, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), 
each of the undersigned officers of the Company certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 
906 of the Sarbanes-Oxley Act of 2002, that:  

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and  

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of 
operations of the Company.  

Date: November 24, 2009 

Date: November 24, 2009 

/s/ WILLIAM P. NOGLOWS 
William P. Noglows 
Chief Executive Officer  

/s/ WILLIAM S. JOHNSON 
William S. Johnson 
Chief Financial Officer  

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OFFICERS

BOARD OF DIRECTORS

CORPORATE INFORMATION

William P. Noglows
Chairman, President and
Chief Executive Officer

H. Carol Bernstein
Vice President, Secretary
and General Counsel

Yumiko Damashek
Vice President,
Japan and Asia Operations

William S. Johnson
Vice President and
Chief Financial Officer

David H. Li
Vice President, Asia Pacific Region

Daniel J. Pike
Vice President,
Corporate Development

Thomas S. Roman
Corporate Controller

Stephen R. Smith
Vice President, Marketing

Clifford L. Spiro
Vice President,
Research and Development

Carmelina M. Stoklosa
Treasurer and Director, Finance

Adam F. Weisman
Vice President, Business Operations

Daniel S. Wobby
Vice President, Global Sales

William P. Noglows
Chairman, President and 
Chief Executive Officer, 
Cabot Microelectronics
Corporation

Robert J. Birgeneau
Chancellor,
University of California, 
Berkeley

John P. Frazee, Jr.
Former Chairman and
Chief Executive Officer,
Centel Corporation

H. Laurance Fuller
Former Co-Chairman,
BP Amoco PLC

Barbara A. Klein
Former Chief Financial Officer,
CDW Computer Centers, Inc.

Edward J. Mooney
Former Chairman and
Chief Executive Officer,
Nalco Chemical Company

Steven V. Wilkinson
Former Partner,
Arthur Andersen LLP

Bailing Xia
Chairman and 
Chief Executive Officer, 
Summer Leaf, Inc.

HEADQUARTERS
Cabot Microelectronics Corporation
870 N. Commons Drive
Aurora, IL 60504
630.375.6631 phone
800.811.2756 toll free
630.499.2666 fax
www.cabotcmp.com

INVESTOR INFORMATION
Contact our offices by mail at
the address above, by telephone
at 630.499.2600 or at
www.cabotcmp.com.

STOCK INFORMATION
Cabot Microelectronics is traded on
the NASDAQ Global Select Market
under the symbol CCMP.

STOCK TRANSFER AGENT
AND REGISTRAR
Computershare Trust Company, N.A.
P.O. Box 43078
Providence, RI 02940.3078
781.575.3400
www.computershare.com

INDEPENDENT AUDITORS
PricewaterhouseCoopers LLP
Chicago, IL

STOCKHOLDERS’ MEETING
The Annual Meeting of Stockholders
will be held at 8 a.m. Central
Time on March 2, 2010, at 
Cabot Microelectronics Corporation
870 N. Commons Drive
Aurora, IL

FORM 10-K
A copy of the Cabot Microelectronics 
Annual Report on Form 10-K for the fiscal 
year ended September 30, 2009, filed 
with the Securities and Exchange Com-
mi s sion, is enclosed and also available 
without charge at www.cabotcmp.com.

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As a pioneer in CMP slurries, our original Semi-Sperse® products 

were first adopted in the 1980s. With continuous improvement 

of some of these slurries, enhanced versions are still in use and 

key to our customer solutions today, such as our flagship Semi-

Sperse W2000 product for tungsten CMP. Over the years, we 

have also successfully introduced a number of new slurry plat-

forms to meet our customers’ evolving CMP needs, while reduc-

ing their overall cost of ownership. For example, our portfolio 

of iDIEL® dielectrics slurries utilizes engineered particles and 

unique chemistries to achieve improved planarity while signifi-

cantly reducing defectivity. Our line of WIN® tungsten slurries 

is designed to enable significant planarization improvements for 

65nm applications and beyond. Our next generation Epoch® 

line of copper slurries provides maximum flexibility to meet 

specific customer integration requirements. Additionally, our 

new line of Sentinel™ slurries for barrier applications is low-k 

compatible and designed to meet broad technical requirements. 

Serving the data storage industry, our Lustra® and Transele® 

product lines improve the surface finish and planarity of certain 

hard disk drive components.

Our products…

We are also a growing supplier of CMP polishing pads for a 

wide range of applications and technology nodes. Our Epic® 

D100 pad is designed for longer pad life, greater pad-to-pad 

consistency and lower defectivity compared to the industry’s 

conventional pads, resulting in a much lower cost of ownership 

for our customers.

Through our Engineered Surface Finishes business, we provide a 

number of precision polishing products, services and equipment 

across a range of industries. For example, we sell automated 

polishing and metrology systems, which enable rapid, determin-

istic and repeatable surface correction for the most demanding 

precision optics applications.

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Cabot Microelectronics Corporation

870 N. Commons Drive

Aurora, IL 60504

www.cabotcmp.com

Cabot  Microelectronics  is  committed  to  conducting  its  business  operations  in  a  manner  that  preserves  the 
environment, which includes minimizing waste, conserving energy and preventing pollution. Our commitment 
goes beyond regulatory compliance and ISO certifications. In fiscal 2009, we successfully lessened our impact 
on the environment in the following ways:

32%

22%

72%

12%

7%

IN C R E A S E IN 
PA P E R R E C Y C L IN G

R E D U C T IO N IN 
WAT E R U S A G E

R E D U C T IO N IN 
L A N D F I L L WA S T E

R E D U C T IO N IN 
C O 2 E M I S S IO N S

R E D U C T IO N IN 
E L E C T R I C I T Y U S A G E

Additionally, we are partnering with our customers to help them achieve their environmental goals. As we look 
to the future, we plan to further reduce the environmental impact of doing business by strongly encouraging 
our  suppliers  to  share  our  environmental  vision,  and  we  plan  to  measure  the  progress  of  these  preferred 
suppliers. Through our own environmental initiatives, as well as through joint programs with our customers and 
suppliers,  we  strive  to  continue  to  be  a  trusted  business  partner  and  model  corporate  citizen  with  respect 
to environmental issues.

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