Cabot Microelectronics Corporation Receives Best Service Supplier Award from Shanghai Huahong Grace Semiconductor Manufacturing

Cabot Microelectronics Corporation Receives Best Service Supplier Award from
Shanghai Huahong Grace Semiconductor Manufacturing Corporation and Outstanding
Supplier Award from Shanghai Huali Microelectronics Corporation

Aurora, IL, March 20, 2014 (GLOBE NEWSWIRE) -- Cabot Microelectronics
Corporation (Nasdaq: CCMP), the world's leading supplier of chemical
mechanical planarization (CMP) polishing slurries and a growing CMP pad
supplier to the semiconductor industry, announced today that it has received a
Best Service Supplier Award from Shanghai Huahong Grace Semiconductor
Manufacturing Corporation (HHGrace) and an Outstanding Supplier Award from
Shanghai Huali Microelectronics Corporation (Huali) for its performance in
2013, for providing CMP solutions deemed essential to HHGrace's and Huali's
success. Cabot Microelectronics was recognized for its exceptional
performance and extraordinary, industry-leading commitment, including in the
areas of quality, cost, availability, technology, customer service, safety and
environmental sustainability.

"We are very pleased to have earned HHGrace's Best Service Supplier Award  and 
Huali's Outstanding Supplier Award," stated David Li, Cabot  Microelectronics' 
Vice President  of the  Asia  Pacific Region.  "We believe  this  recognition 
exemplifies our commitment to support our customers in China, an important and
growing region for the semiconductor industry,  and to be a long term  trusted 
partner, consistently  delivering high-quality,  high-performing and  reliable 
CMP products and solutions."

ABOUT CABOT MICROELECTRONICS CORPORATION

Cabot Microelectronics Corporation, headquartered in Aurora, Illinois, is  the 
world's leading  supplier of  CMP polishing  slurries and  a growing  CMP  pad 
supplier to  the  semiconductor  industry.  The  company's  products  play  a 
critical role in  the production of  advanced semiconductor devices,  enabling 
the manufacture of smaller, faster and more complex devices by its customers.
The company's mission is to create value by developing reliable and innovative
solutions, through close customer collaboration, that solve today's challenges
and help enable tomorrow's technology.  Since becoming an independent  public 
company in 2000, the company has  grown to approximately 1,050 employees on  a 
global basis. For more information about Cabot Microelectronics  Corporation, 
visit  www.cabotcmp.com  or  contact  Trisha  Tuntland,  Manager  of  Investor 
Relations at 630-499-2600.

SAFE HARBOR STATEMENT

This news release may include statements that constitute "forward looking
statements" within the meaning of federal securities regulations. These
forward-looking statements include statements related to: 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, regulatory or legislative activity, 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; natural disasters; the acquisition of or investment in other
entities; uses and investment of the company's cash balance; financing
facilities and related debt, payment of principal and interest, and compliance
with covenants and other terms; the company's capital structure; and the
construction and operation of facilities by Cabot Microelectronics
Corporation. These forward-looking statements involve a number of risks,
uncertainties, and other factors, including those described from time to time
in Cabot Microelectronics' filings with the Securities and Exchange Commission
(SEC), that could cause actual results to differ materially from those
described by these forward-looking statements. In particular, see "Risk
Factors" in the company's quarterly report on Form 10-Q for the quarter ended
December 31, 2013 and in the company's annual report on Form 10-K for the
fiscal year ended September 30, 2013, both filed with the SEC. Cabot
Microelectronics assumes no obligation to update this forward-looking
information.

CONTACT: Trisha Tuntland
         Manager, Investor Relations
         (630)499-2600

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