Cabot Corporation Increases Price for Fumed Metal Oxides Globally

September 1, 2015

BOSTON –  Effective October 1, 2015, or as contracts permit, Cabot Corporation will  increase prices        5 percent  globally, for CAB-O-SIL® fumed  and colloidal silicas, CAB-O-SPERSE® aqueous dispersions  and SpectrAl® fumed alumina products.

The  price increase is required due to escalating raw materials and operating costs,  including packaging, currency devaluation and logistics. The price adjustments  will enable Cabot to continue to invest in product innovation, world-class  production and supply capabilities to service customers on a global basis. It will  also help ensure that Cabot can continue to provide customers with high-quality  products, technology innovations and the highest level of customized service  and technical support available.

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