Cabot Corporation Increases Prices for Specialty Carbons Globally

August 17, 2015

BOSTON – Effective September 17, 2015, or as contracts allow, Cabot Corporation will  increase prices, up to 6 percent globally, for specialty carbon products. This  price increase is required due to escalating operating, logistics, currency devaluation and environmental  compliance costs.

Cabot makes  every effort to manage costs and optimize cost structures and productivity.  However, persistently rising operational costs make this a necessary action. The increase will help ensure that Cabot remains a reliable, long-term  supplier of high quality products and services. It will also enable continued  investment in the development of new products and applications to support its customers.  Cabot is dedicated to ensuring supply security and the highest service  standards for its customers, delivering innovative new products and processes,  and achieving its sustainability targets.

ABOUT CABOT CORPORATION

Cabot Corporation (NYSE: CBT) is a global specialty chemicals and  performance materials company, headquartered in Boston, Massachusetts. The  company is a leading provider of rubber and specialty carbons, activated carbon, inkjet colorants, cesium formate drilling fluids, fumed silica, and aerogel. For more information on Cabot, please visit the  company’s website at: http://www.cabotcorp.com.

Safe  Harbor Statement under the Private Securities Litigation Reform Act of 1995:  Statements in the press release regarding Cabot's business that are not  historical facts are forward looking statements that involve risks and  uncertainties. For a discussion of such risks and uncertainties, which could  cause actual results to differ from those contained in the forward looking  statements, see "Risk Factors" in the Company's Annual Report on Form  10-K.

Contact: Vanessa Craigie
Media Relations
(617) 342-6015