Cabot Corporation Jefferies 2014 Global Industrials Conference

Eduardo Cordeiro August 13, 2014

This presentation contains forward-looking statements based on management’s current expectations, estimates and projections. All statements that address expectations or projections about the future, including our actions that will drive earnings growth, demand for our products, our expected capital expenditures in fiscal 2014, and our future financial performance, are forward-looking statements. These statements are not guarantees of future performance and are subject to risks, uncertainties, potentially inaccurate assumptions, and other factors, some of which are beyond our control and difficult to predict. If known or unknown risks materialize, or should underlying assumptions prove inaccurate, our actual results could differ materially from past results and from those expressed in the forward-looking statement. Important factors that could cause our results to differ materially from those expressed in the forward-looking statements include, but are not limited to lower than expected demand for our products; the loss of one or more of our important customers; our inability to complete capacity expansions or other development projects , including at our mine in Manitoba, as planned; the timing of implementation of environmental regulations; our failure to develop new products or to keep pace with technological developments; patent rights of others; the timely commercialization of products under development (which may be disrupted or delayed by technical difficulties, market acceptance, competitors' new products, as well as difficulties in moving from the experimental stage to the production stage); changes in raw material costs; demand for our customers' products; competitors' reactions to market conditions; delays in the successful integration of structural changes, including acquisitions or joint ventures; the laws, regulations, policies and economic conditions, including inflation, interest and foreign currency exchange rates, of countries where we do business; and severe weather events that cause business interruptions, including plant and power outages or disruptions in supplier or customer operations. These factors are discussed more fully in the reports we file with the Securities and Exchange Commission, particularly our latest annual report on Form 10-K.

This presentation includes references to adjusted earnings per share (EPS), adjusted EBITDA, and adjusted EBITDA margins, which are non-GAAP measures. A reconciliation of adjusted EPS to EPS from continuing operations, the most directly comparable GAAP financial measure, is provided in the tables accompanying this presentation. The definition of adjusted EBITDA is included in our third quarter earnings release and filed on our Current Report on Form 8-K dated July 30, 2014 and a reconciliation of adjusted EBITDA from segment EBIT and adjusted EBITDA margins for fiscal 2013 and year-to-date fiscal 2014 is provided in the investor section of our website at http://investor.cabot-corp.com, under the Non-GAAP Reconciliations section.

Forward Looking Statements, Use of Non-GAAP Financial Measures & Definitions of Terms Used

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About Cabot

NYSE: CBT

Founded 1882

Global specialty chemicals and performance materials company

42 manufacturing sites in 21 countries

Core technical competencies in fine particles and surface modification

FY2013 sales: $3.5 billion

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Reinforcement Materials Segment

RUBBER BLACKS BUSINESS

Global leader in carbon black

Strong footprint in Asia, Europe, and the Americas

Industry leading technology for high performing and energy efficient tires

YTD 2014 adjusted EBITDA margins of 16%

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* YTD 2014 represents the nine months ended June 30, 2014

Performance Materials Segment

SPECIALTY CARBONS AND COMPOUNDS AND FUMED METAL OXIDES BUSINESSES

Leadership positions in specialty carbons and fumed silica

Strong, global asset base

Focus on applications development and providing customized solutions for our customers

YTD 2014 adjusted EBITDA margins of 22%

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* YTD 2014 represents the nine months ended June 30, 2014

Advanced Technologies Segment

SPECIALTY FLUIDS, INKJET, ELASTOMER COMPOSITES, AND AEROGEL BUSINESSES

Cutting-edge technologies with leadership positions

Focus on customer partnerships and commercial growth

YTD 2014 adjusted EBITDA margins of 36%

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* YTD 2014 represents the nine months ended June 30, 2014

Purification Solutions Segment

ACTIVATED CARBON BUSINESS

World’s largest and most experienced producer of activated carbon

Purification for air, water, food & beverage, pharmaceuticals and more

Growth tied to macro-trends in environmental, food, and water

US regulation to drive significant growth in North American air and gas sector

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Industry Profile Serving various industries through our portfolio of leading businesses

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Cabot Manufacturing Locations

42 manufacturing sites in 21 countries, all with local management teams

manufacturing sites affiliates regional headquarters

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Strategy and Strategic Levers

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“Deliver earnings growth through leadership in performance materials.”

Strategic levers

Margin Improvement Capacity and Emerging

Market Expansion

Portfolio Management New Product and New Business Development

Strong Portfolio of Leading Businesses

*EBITDA Margin presented on adjusted basis **Recast to reflect Security Materials business in discontinued operations following divestiture of business

2013 EBITDA

EBITDA Margin

Reinforcement Materials

$269 14%

Performance Materials

$181 20%

Advanced Technologies

$78 35%

Purification Solutions

$50 14%

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Reinforcement Materials volumes higher in 2014 from improved demand, the addition of new capacity in China, and our acquisition in Mexico; Adjusted EBITDA margin improved to 16%

Performance Materials improved performance from higher volumes in our key end markets; on track for record EBIT performance in 2014

Advanced Technologies EBIT results improved from higher volumes in Specialty Fluids and higher royalties and technology payments in Elastomer Composites

Purification Solutions air and gas sector remains challenging; confident in long-term outlook due to the expected 2015 MATS implementation

YTD 2014 Highlights YTD 2014 Adjusted EBITDA $446 million; 13% Above YTD 2013

* YTD 2014 represents the nine months ended June 30, 2014 **Recast to reflect Security Materials business in discontinued operations following divestiture of business

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Capital Allocation

Capital Expenditures: Expect between $175-$200 million in FY2014

Dividend: Paid consistently for 20+ years; increased 10% in 2014

Debt: BBB+ / Baa2; recently reaffirmed investment grade rating

Share Repurchases: Repurchased 2.7 million shares since 2010

M&A: Focusing on integration of Norit and NHUMO

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Investment Highlights

Portfolio of high performing businesses with leading market positions

Technology and product innovation leadership

Broad geographic footprint with leading emerging market positions

Diversity of product and end market mix

Strong, stable balance sheet – S&P BBB+ / Moody’s Baa2 ratings

Global Leader in Specialty Chemicals

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Thank You NYSE: CBT

Investor Relations Contact:

Erica McLaughlin

Vice President, Investor Relations

(617) 342-6090

erica.mclaughlin@cabotcorp.com

Appendix

Non-GAAP Financial Measures Adjusted EPS

Adjusted EPS = Net Income per diluted common share from continuing operations

– After-tax certain items per share

Adjusted net income per share Certain items are items that management does not consider representative of the Company’s fundamental operating results.

Net income per share from continuing operations Less: After-tax certain items per share Adjusted earnings per share

2008

$1.21 $0.06 $1.15

2009

($1.21) ($1.06) ($0.15)

2010

$1.94 ($0.46) $2.40

2011

$2.77 $0.34 $2.43

2012

$2.83 ($0.49) $3.32

INVESTOR RELATIONS OVERVIEW 17

2013

$2.32 ($0.59) $2.91

Non-GAAP Financial Measures Adjusted EBITDA and Adjusted EBITDA Margin

Please see the investor section of our website for 2013 and 2014 reconciliations of Adjusted EBITDA and Adjusted EBITDA Margins.

INVESTOR RELATIONS OVERVIEW 18