CABOT CORP
10-K, 1999-12-29
MISCELLANEOUS CHEMICAL PRODUCTS
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                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                   FORM 10-K

[X]           ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934
                  FOR THE FISCAL YEAR ENDED SEPTEMBER 30, 1999

                                       OR

[ ]         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 1-5667

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

<TABLE>
<S>                                              <C>
                    DELAWARE                                          04-2271897
          (State or other jurisdiction                               (IRS Employer
       of incorporation or organization)                          Identification No.)
                75 STATE STREET
             BOSTON, MASSACHUSETTS                                       02109
    (Address of Principal Executive Offices)                          (Zip Code)
</TABLE>

                                 (617) 345-0100
              (Registrant's telephone number, including area code)

          SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:
                    COMMON STOCK, $1.00 PAR VALUE PER SHARE:

<TABLE>
<S>                                              <C>
         67,144,305 SHARES OUTSTANDING                           BOSTON STOCK EXCHANGE
              AT NOVEMBER 30, 1999                              NEW YORK STOCK EXCHANGE
                                                                   PACIFIC EXCHANGE
</TABLE>

                        PREFERRED STOCK PURCHASE RIGHTS

     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 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 the Registrant's knowledge, in the definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K.  [ ]

     The aggregate market value of the Registrant's common stock held
beneficially or of record by shareholders who are not directors or executive
officers of the Registrant at November 30, 1999, was approximately
$1,149,428,400.

                      DOCUMENTS INCORPORATED BY REFERENCE

     Portions of the Registrant's Annual Report to Stockholders for fiscal year
1999 are incorporated by reference in Parts II and IV, and portions of the
Registrant's definitive Proxy Statement for its 2000 Annual Meeting of
Stockholders are incorporated by reference in Part III.
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                                     PART I

ITEM 1.  BUSINESS

                                    GENERAL

     Cabot's business was founded in 1882 and incorporated in the State of
Delaware in 1960. The Company has businesses in chemicals, performance
materials, specialty fluids, microelectronics materials, and liquefied natural
gas. The Company and its affiliates have manufacturing facilities in the United
States and more than 20 other countries.

     The term "Cabot" as used in this Report refers to Cabot Corporation. The
terms "Company" and "Registrant" mean Cabot and its consolidated subsidiaries.

     The description of the Company's businesses is as of September 30, 1999,
unless otherwise noted. Information regarding the Company's revenues and profits
by business segment and geographic area appears on pages 21 through 24 and in
Note Q of the Notes to the Company's Consolidated Financial Statements on pages
49 through 51 of the Company's Annual Report to Stockholders for the fiscal year
ended September 30, 1999 ("Annual Report"), which are incorporated herein by
reference.

     During the fiscal year ended September 30, 1999, Cabot repurchased
approximately 2 million shares of its common stock, $1.00 par value per share
(the "Common Stock"), for the purpose of reducing the total number of shares
outstanding as well as offsetting shares issued under the Company's employee
incentive compensation programs.

     Additional information regarding significant events affecting the Company
during its fiscal year ended September 30, 1999, appears in Management's
Discussion and Analysis of Financial Condition and Results of Operations on
pages 21 through 29 of the Annual Report.

                                CHEMICALS GROUP

CARBON BLACK

     The Company manufactures and sells carbon black, which consists of fine
particles. The Company's carbon black products are grouped generally into three
categories: tire blacks, industrial product blacks and special blacks. Tire
blacks are used as reinforcing agents in tires, and are marketed to tire
companies for use in tires both for commercial and passenger vehicles.
Industrial product blacks are used as reinforcing agents in industrial products
such as extruded profiles, hoses and molded goods. Industrial product blacks are
marketed to the automotive, construction and rubber manufacturing industries,
among others. Special blacks, which are non-rubber grades of carbon black, are
used to provide pigmentation, conductivity and ultraviolet protection, among
other things, in many specialty applications such as inks, plastics, cables and
coatings.

     The Company believes that it is the leading manufacturer of carbon black in
the world, with an estimated one-quarter of the worldwide production capacity
and market share of carbon black. The Company competes in the manufacture of
carbon black primarily with two companies having an international presence and
with at least 20 other companies in various regional markets in which it
operates (see "General," below).

     Carbon black plants owned by Cabot or a subsidiary are located in
Argentina, Australia, Brazil, Canada, China, the Czech Republic, England, France
(two plants), India, Indonesia (two plants), Italy, Japan, the Netherlands,
Spain and the United States (four plants). Affiliates of the Company own carbon
black plants in Colombia, Japan (two plants), Malaysia, Mexico and Venezuela.
Headquarters for the Company's carbon black business are located in Billerica,
Massachusetts, with regional headquarters in Atlanta, Georgia (North America),
Sao Paulo, Brazil (South America), Suresnes, France (Europe), and Kuala Lumpur,
Malaysia (Pacific Asia). Some of the plants listed above are built on leased
land (see "Properties," below). Because of economic conditions in Asia,
production at the Company's Merak facility, one of the two it owns in Indonesia,
is currently halted. See Note B of the Notes to the Company's Consolidated
Financial Statements on pages 38 and 39 of the Annual Report.
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     The principal raw materials used in the manufacture of carbon black are
carbon black oils, a portion of the residual oil pool which is derived from
petroleum refining operations and from the distillation of coal tars and the
production of ethylene throughout the world. The availability of raw materials
has not been and is not expected to be a significant factor for the Company's
carbon black business. Raw material costs are influenced by the cost and
availability of oil worldwide and the availability of various types of carbon
black oils. During the second half of fiscal year 1999, the price of raw
materials for the carbon black business increased significantly.

     Sales are generally made by employees of the Company or its affiliates in
the countries where carbon black plants are located. Export sales are generally
made through distributors or sales representatives in conjunction with Company
employees. In fiscal year 1999, the Company's plastics business took over the
marketing of carbon black to the plastics industry. Sales are made under various
trademarks owned by Cabot. (See "General," below.)

     The Company's carbon black business continues to pursue a dual strategy of
cost improvement and new product development. Management continues to support
carbon black new product development initiatives that have significant customer
involvement or sponsorship. The Company's management continues to believe that
if the Company can achieve a combination of effective cost and capacity
management and commercialization of new product initiatives, the Company's
carbon black business should have earnings growth opportunities over the next
several years.

FUMED SILICA

     The Company manufactures and sells fumed silica and dispersions thereof
under various trademarks. Fumed silica is an ultra-fine, high-purity particle
used as a reinforcing, thickening, thixotropic, suspending or anti-caking agent
in a wide variety of products produced for the automotive, construction and
consumer products industries, including adhesives, sealants, cosmetics, inks,
silicone rubber, coatings and pharmaceuticals. The headquarters for the
Company's fumed silica business are located in Naperville, Illinois. This
business has two North American fumed silica manufacturing plants, which are
located in Tuscola, Illinois and Midland, Michigan. The Midland plant was
completed in September 1999 and began operations in November 1999. The Company
is in the process of qualifying all grades of fumed silica for production at the
Midland plant. The Company leases a manufacturing plant in Wales and owns a
manufacturing plant in Germany; prior to October 1997, the plant in Germany was
owned by a joint venture in which the Company held a 50% interest. In addition,
a joint venture owned 50% by the Company and 50% by an Indian entity owns a
plant in India, which began operations in the spring of 1998. Raw materials for
the production of fumed silica are various chlorosilane feedstocks. The
feedstocks are either purchased or toll converted for owners of the materials.
The Company has long-term procurement contracts or arrangements in place for the
purchase of feedstock for this business, which it believes will enable it to
meet its raw material requirements for the foreseeable future. In addition, the
Company buys some materials in the spot market in order to help ensure
flexibility and minimize costs. Sales of fumed silica products are made by
Company employees and through distributors and sales representatives. There are
four principal producers of fumed silica in the world (see "General," below).
The Company believes it is the leading producer and seller of this chemical in
the United States and second worldwide.

PLASTICS

     During fiscal year 1999, the Company combined its existing plastics
business, which consisted of concentrates and compounds, with a portion of the
special blacks category of the Company's carbon black business. The Company's
plastics segment now markets carbon black, and produces and markets black and
white thermoplastic concentrates and specialty compounds, to the plastics
industry. Major applications for the materials produced and sold by the
Company's plastics business include pipe and tubing, packaging and agricultural
film, automotive components, cable sheathing and special packaging for use in
the electronics industry. Customers use the carbon black marketed by the
plastics business to provide color, UV protection, electrical conductivity and
opacity in plastics. Sales are made under various Cabot trademarks, each of
which is either registered or pending in one or more countries (see "General"
below). Sales are made by Company
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employees and through sales representatives and distributors primarily in Europe
(concentrates, compounds and carbon black), North America (carbon black) and
Asia (concentrates, compounds and carbon black). The thermoplastic concentrates
and compounds sold are produced in Company facilities in Europe and Hong Kong.
The carbon black sold is produced in Company facilities in Europe, North America
and Asia. The plastics business is headquartered in Leuven, Belgium. In Europe,
the Company is one of the five leading producers of thermoplastic concentrates.
Other than carbon black feedstock, the primary raw materials used in this
business are titanium dioxide, thermoplastic resins and mineral fillers. The
price of thermoplastic resins has increased rapidly during the second half of
fiscal 1999. Such price fluctuations are not unusual in the plastics industry,
but the temporary effect has been to cause customers to increase their
inventories and, hence, to increase the sales volumes for this business. The
Company expects that as the price of thermoplastic resins levels off, the level
of orders will decrease. Raw materials are, in general, readily available.

INKJET COLORANTS

     Inkjet colorants are pigment-based black colorants, which are designed to
replace traditional pigment dispersions and dyes used in inkjet printing
applications. Products produced by the Company's inkjet colorants business,
formed in 1996, target various printing markets, including home and office
printers, wide format printers, and commercial and industrial printing
applications. The Company's colorants have become integral components in several
inkjet printing systems introduced to the market during fiscal year 1999. Sales
are made by Company employees and through distributors and sales
representatives. The headquarters of the Company's inkjet colorants business are
located in Billerica, Massachusetts. Raw materials for the inkjet colorants
business include carbon black, as well as other products, some of which are
custom manufactured, from various sources. The Company does not anticipate any
difficulties in obtaining those raw materials which are custom manufactured for
its inkjet business, and believes that all other raw materials for this business
are in adequate supply.

                             PERFORMANCE MATERIALS

     The Company produces tantalum, niobium (columbium) and their alloys for the
electronic materials and refractory metals industries, and cesium, germanium,
rubidium and tellurium for a wide variety of industries including the fiber
optics and specialty chemicals industries. Tantalum, which accounts for the
majority of this business' sales, is produced in various forms including powder
and wire for electronic capacitors. Tantalum and niobium and their alloys are
also produced in wrought form for non-electronic applications such as chemical
process equipment and the production of superalloys, and for various other
industrial and aerospace applications. Tantalum produced by the Company is also
used in ballistic munitions by the defense industry. The headquarters and
principal manufacturing facility for this business are in Boyertown,
Pennsylvania. An affiliate of the Company has a manufacturing plant in Japan.
Raw materials are obtained by the Company from ores mined principally in Africa,
Australia, Brazil and Canada and from by-product tin slags from tin smelting
mainly in Malaysia and Thailand. Raw materials are currently in adequate supply.
The Company is presently seeking new sources of tantalum supply, or an expansion
of current sources, to support future demand. Sales in the United States are
made by Company employees, with export sales to Europe handled by Company
employees, independent European sales representatives and an affiliated company.
Sales in Japan and other parts of Asia are handled primarily through employees
of the Company's Japanese affiliate. There are currently two principal groups
producing tantalum and niobium in the western world, with an emerging competitor
in China. The Company believes that it, together with its Japanese affiliate, is
the leading producer of electronic grade tantalum powder products, with
competitors having greater production in some other product lines (see
"General," below).

                                SPECIALTY FLUIDS

     The Company's specialty fluids business produces and markets cesium formate
as a drilling and completion fluid for use in high pressure and high temperature
oil and gas well operations. Cesium formate is a solids-free high-density fluid
that has a low viscosity, permitting it to flow readily in oil and gas wells.
The

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Company expects the fluid to be especially beneficial to operators of wells
where the oil or gas is difficult to reach. Based on current information, the
fluid is resistant to high temperatures, does not damage producing reservoirs
and is readily biodegradable. The Company has been shipping the fluid to
Aberdeen, Scotland for application in its target market, the North Sea.
Commercial testing of the Company's cesium formate in this region during the
fourth quarter of fiscal year 1999 yielded positive results. The Company expects
those initial test results to boost industry confidence in the fluid, leading to
additional applications. The specialty fluids business has its headquarters in
The Woodlands, Texas, and has a mine and a cesium formate manufacturing facility
in Manitoba, Canada. The Company built a large inventory of cesium formate in
preparation for initial testing and, as a result, has temporarily halted
production at its manufacturing facility as it waits for testing to be completed
and commercial rentals/leases to begin. The Company expects to make cesium
formate sales through existing oil field service companies, with periodic direct
sales to oil and gas operating entities. Customers will either rent or purchase
cesium formate from the Company. Those who rent cesium formate will be required
to purchase any of the product that is not returned to the Company after the job
is completed. The principal raw material used in this business is pollucite ore,
which the Company obtains from its mine. The Company has an adequate supply of
this cesium-rich ore, with approximately 80% of the world's known cesium
reserves. Because each job for which cesium formate is used requires a large
volume of the product, the specialty fluids business must carry a large
inventory. Based on its current information, the Company expects to reclaim
between 60% and 90% of the cesium formate used in each job, which will be
returned to inventory for use in additional well operations. The Company's
specialty fluids business also markets tantalum and spodumene to the electronics
and pyroceramics industries. Sales of those products are made either by Company
employees or its agent.

                           MICROELECTRONICS MATERIALS

     The Company manufactures and sells high-purity polishing compounds, made
from fine metal oxide particles and a variety of chemistries. The polishing
materials are used in the manufacture of multi-layer integrated circuit chips
and other electronic devices by the semiconductor industry. These products are
sold under various Cabot trademarks (see "General", below). Sales of polishing
compounds are made by Company employees and through distributors and sales
representatives. Raw materials, a significant portion of which are manufactured
by the Company's fumed silica business, are readily available. The Company has a
dispersion manufacturing facility and laboratory in Aurora, Illinois, and a
dispersion manufacturing facility in Barry, Wales. A third dispersion
manufacturing facility in Geino, Japan began production in April 1999, with
sales commencing in May 1999. In addition, the Company has dispersions mixed for
it by a contract manufacturer in Hammond, Indiana. The headquarters and
technology center for the Company's microelectronics materials business are
located in Aurora, Illinois. The Aurora, Illinois facilities provide quality
control management, operations management, marketing support and customer sales
and service for the Company's microelectronics materials business. Cabot plans
an initial public offering of approximately 15% of its microelectronics
materials business, which it expects will occur in the first half of calendar
year 2000. The Company anticipates that the offering will be followed by a
distribution of its remaining shares of this business to the Cabot shareholders.

                             LIQUEFIED NATURAL GAS

     The Company, through its wholly owned subsidiary, Cabot LNG Corporation,
purchases liquefied natural gas ("LNG") from foreign suppliers, and stores and
resells it in both vapor and liquid form in the northeast United States through
a terminal facility in Everett, Massachusetts. The headquarters for this
business are located in Boston, Massachusetts.

     The Company's LNG supplies currently come primarily from two suppliers.
Sonatrading, an affiliate of Sonatrach, the Algerian national oil and gas
company, supplies LNG and Sonatrach provides the associated marine
transportation, both under long-term contracts. Cabot and Sonatrach have each
agreed to assure performance of the obligations of their respective affiliates
under these agreements. The Company also purchases LNG from Atlantic LNG Company
of Trinidad and Tobago ("Atlantic LNG"), described below,

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under a long-term supply contract. The Company received its first delivery of
LNG from Atlantic LNG aboard its LNG tanker the Matthew in May 1999. During the
past two years, the Company also purchased LNG from the North West Shelf project
in Australia, Sonatrach and Enagas under short-term arrangements.

     The Company markets LNG to local gas distribution companies, natural gas
marketers and electric generators. These markets are characterized by
substantial price competition and numerous competitors, including natural gas
suppliers and suppliers of alternative fuels. Prices are stronger in the winter
months because of heating demands in New England.

     A consortium of companies consisting of Amoco Trinidad (LNG) B.V., British
Gas Trinidad LNG Limited, Cabot Trinidad LNG Limited ("Cabot Trinidad," a wholly
owned subsidiary of Cabot LNG Corporation), NGC Trinidad and Tobago LNG Limited
and Repsol International Finance B.V. are shareholders of Atlantic LNG, a
corporation formed to construct, own and operate a new LNG liquefaction plant in
the Republic of Trinidad and Tobago. Cabot Trinidad owns 10% of Atlantic LNG.
The plant is designed to export 385 million cubic feet of natural gas per day in
the form of LNG. Cabot LNG Corporation and Enagas, S.A., the largest importer
and wholesaler of natural gas in Spain, have entered into contracts with
Atlantic LNG under which Cabot LNG Corporation will purchase 60% and Enagas,
S.A. will purchase the remaining 40% of the LNG to be produced by Atlantic LNG's
new plant. Shipments of LNG from the Trinidad facility began in April 1999 and
the liquefaction plant was declared commercial in August 1999.

     In June 1997, Atlantic LNG concluded a $600 million limited recourse
financing with a consortium of international banks to provide funds for the
construction of the new liquefaction plant, for which the Company, as well as
the other Atlantic LNG shareholders or their respective affiliates, have issued
limited completion guarantees. Those guarantees will expire when Atlantic LNG
completes the funding of a debt reserve account. Atlantic LNG expects that
funding to occur near the end of the first quarter or the beginning of the
second quarter of fiscal year 2000. Atlantic LNG shareholders are presently
evaluating an expansion of the facility.

     The Company completed the refurbishment of its LNG tanker, the Matthew, and
brought it into service in January 1999. The Company uses the Matthew to
transport LNG supplies from the Trinidad facility. The Company has also expanded
its terminal in Everett to vaporize an additional 150 million cubic feet of
natural gas per day, an approximate 50% increase in capacity. That expansion was
completed in November 1998.

                                    GENERAL

     The Company owns and is a licensee of various patents, which expire at
various times, covering many of its products, as well as processes and product
uses. Although the products made and sold under these patents and licenses are
important to the Company, the loss of any particular patent or license would not
materially affect the Company's business, taken as a whole. The Company sells
its products under a variety of trademarks, the loss of any one of which would
not materially affect the Company's business, taken as a whole.

     With the exception of the Company's LNG business, described above, the
Company's businesses are generally not seasonal in nature, although they
experience some decline in sales in the fourth fiscal quarter due to European
summer plant shutdowns. The Company believes that as of September 30, 1999,
approximately $98 million of backlog orders for its businesses were firm,
compared to firm backlog orders as of September 30, 1998, of approximately $88
million. All of the 1999 backlog orders are expected to be filled during fiscal
year 2000.

     Many of the Company's chemicals and materials are used in products
associated with the automotive industry such as tires, extruded profiles, hoses,
molded goods, capacitors and paints. The Company's financial results are
affected by the cyclical nature of the automotive industry, although a large
portion of the market is for replacement tires and other parts which are less
subject to automobile industry cycles. The Company has long-term carbon black
supply contracts with certain of its North American tire customers. Those
contracts are designed to provide such customers with a secure supply of carbon
black and reduce the volatility in the Company's carbon black volumes and
margins caused, in part, by automobile industry cycles.

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     Five major tire and rubber customers, one fumed silica customer, two
capacitor materials customers and one microelectronics customer represent a
material portion of the total net sales and operating revenues of the Company's
businesses; the loss of one or more of these customers might materially
adversely affect the Company's businesses taken as a whole.

     Competition in the Company's businesses, other than its LNG business, is
based on price, service, quality, product performance and technical innovation.
Competition in the LNG business is based primarily on price and, to a lesser
degree, service. Competitive conditions also necessitate carrying an inventory
of raw materials and finished goods in order to meet customers' needs for prompt
delivery of products. Competition in quality, service, product performance and
technical innovation is particularly significant for the fumed silica,
industrial products, special blacks, inkjet colorants, microelectronics
materials and tantalum businesses. The Company's competitors, other than in the
LNG business and the carbon black business, vary by product group. Both the
natural gas and the electric businesses in the northeast United States are in
the process of being deregulated and restructured, thereby making them subject
to greater competition. This restructuring is causing significant changes in the
Company's LNG customer base, including a shift in the responsibility for gas
supplies from the local gas distribution companies to natural gas marketers. To
date, those changes have not had any appreciable effect on the Company's LNG
business.

                                     OTHER

     The Company owns approximately 41.4% of the common stock of Aearo
Corporation (formerly Cabot Safety Holdings Corporation) after the restructuring
of the Company's safety products and specialty composites business in July 1995.
The Company has two representatives serving on the Board of Directors of Aearo
Corporation and its principal subsidiaries ("Aearo"). Aearo manufactures and
sells personal safety products, as well as energy absorbing, vibration damping
and impact absorbing products for industrial noise control and environmental
enhancement.

                               OTHER INFORMATION

EMPLOYEES

     As of September 30, 1999, the Company had approximately 4,450 employees.
Approximately 450 employees in the United States are covered by collective
bargaining agreements. The Company believes that its relations with its
employees are satisfactory.

RESEARCH AND DEVELOPMENT

     The Company develops new and improved products and processes and greater
operating efficiencies through Company-sponsored research and technical service
activities including those initiated in response to customer requests.
Expenditures by the Company for such activities are shown on page 32 of the
Annual Report which is incorporated herein by reference.

SAFETY, HEALTH AND ENVIRONMENT

     The Company's operations are subject to various environmental laws and
regulations. Over the past several years, the Company has expended considerable
sums to add, improve, maintain and operate facilities for environmental
protection.

     The Company has been named as a potentially responsible party under the
Comprehensive Environmental Response, Compensation, and Liability Act of 1980
(the "Superfund law") with respect to several sites (see "Legal Proceedings,"
below). During the next several years, as remediation of various environmental
sites is carried out, the Company expects to spend a significant portion of its
$39 million environmental reserve for costs associated with such remediation.
Additions are made to the reserve based on the Company's continuing analysis of
its share of costs likely to be incurred at each site. The sites are primarily
associated with divested businesses.
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     In 1996, the International Agency for Research on Cancer ("IARC") revised
its evaluation of carbon black from Group 3 (insufficient evidence to make a
determination regarding carcinogenicity) to Group 2B (known animal carcinogen,
possible human carcinogen), based solely on results of studies of female rat
responses to the inhalation of carbon black. The Company has communicated this
change in IARC's evaluation of carbon black to its customers and employees and
has made changes to its material safety data sheets and elsewhere, as
appropriate. The Company continues to believe that available evidence, taken as
a whole, indicates that carbon black is not carcinogenic to humans, and does not
present a health hazard when handled in accordance with good housekeeping and
safe workplace practices as described in the Company's material safety data
sheets.

     In October 1999, the California Office of Environmental Health Hazard
Assessment ("OEHHA") published a Notice of Intent to add "carbon black (airborne
particles of respirable size)" to its list of chemicals known to the State to
cause cancer, promulgated pursuant to the California Safe Drinking Water and
Toxic Enforcement Act, commonly referred to as Proposition 65. OEHHA stated it
was taking this action in light of IARC's 1996 reclassification of carbon black.
Proposition 65 requires businesses to give warnings to individuals before they
knowingly or intentionally expose them to chemicals subject to its requirements,
and it prohibits businesses from knowingly discharging or releasing the
chemicals into water or onto land where they could contaminate drinking water.
The Company is working with the International Carbon Black Association and
various customers and carbon black user groups to respond to the decision by
OEHHA to add carbon black to the list of chemicals subject to Proposition 65.

*FORWARD LOOKING INFORMATION

     Included herein are statements relating to management's projections of
future profits, the possible achievement of the Company's financial goals and
objectives, and management's expectations for the Company's product development
program. Actual results may differ materially from the results anticipated in
the statements included herein due to a variety of factors including market
supply and demand conditions, fluctuations in currency exchange rates, cost of
raw materials, patent rights of others, Year 2000 disruptions, demand for the
Company's customers' products and competitors' reactions to market conditions.
Timely commercialization of products under development by the Company may be
disrupted or delayed by technical difficulties, market acceptance or
competitors' new products, as well as difficulties in moving from the
experimental stage to the production stage. Actual results in the future may
differ materially from these projected results due to actual developments in the
global financial markets. The methods used by the Company to assess and mitigate
risks should not be considered projections of future events or losses.

FINANCIAL INFORMATION ABOUT SEGMENTS, FOREIGN AND DOMESTIC OPERATIONS AND EXPORT
SALES

     Segment financial data are set forth on pages 21 through 24, and in the
portion of Note Q of the Notes to the Company's Consolidated Financial
Statements that appears on pages 49 and 50, of the Annual Report, and both are
incorporated herein by reference. A significant portion of the Company's
revenues and operating profits is derived from overseas operations. The
profitability of the Company's segments, other than the Company's LNG segment,
is affected by fluctuations in the value of the U.S. dollar relative to foreign
currencies. The Company's overseas operations do not currently include any
energy related businesses. (See the portion of Note Q of the Notes to the
Company's Consolidated Financial Statements appearing on page 51 of the Annual
Report for further information relating to sales and profits by geographic area,
and "Management's Discussion and Analysis of Financial Condition and Results of
Operations", appearing on pages 21 through 29 of the Annual Report, both
incorporated herein by reference.) Currency fluctuations and nationalization and
expropriation of assets are risks inherent in international operations. The
Company has taken steps it deems prudent in its international operations to
diversify and otherwise to protect against these risks, including the use of
foreign currency financial instruments to reduce the risk associated with
changes in the value of certain foreign currencies compared to the U.S. dollar.
(See "Management's Discussion and Analysis of Financial Condition and Results of
Operations -- Risk Management" and Note P of the Notes to the Company's
Consolidated Financial Statements, on pages 25 and 26, and 48 and 49,
respectively, of the Annual Report.)

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ITEM 2.  PROPERTIES

     The Company owns, leases and operates office, production, storage,
distribution, marketing and research and development facilities in the United
States and in foreign countries.

     The principal facilities of the Company's business units are described
generally in Item 1 above.

     The principal facilities owned by the Company in the United States are: (i)
the administrative offices and manufacturing plants of its carbon black
operations in Louisiana, Massachusetts, Texas and West Virginia; (ii) its
research and development facilities in Illinois, Massachusetts and Pennsylvania;
(iii) the administrative offices and manufacturing plants of its fumed silica
and microelectronics materials businesses in Illinois, and its performance
materials business in Pennsylvania; and (iv) its LNG terminal and storage
facility in Massachusetts.

     The Company's principal foreign owned facilities are held through
subsidiaries and consist primarily of manufacturing facilities, together with
administrative facilities and research and development facilities. The largest
of such facilities are located in Australia, China, the Czech Republic, England,
France, India, Indonesia and Italy, and are used by the Company's carbon black
business. Portions of the owned facilities in the Czech Republic, France, Japan
and Spain, and all of the owned facilities in China, Hong Kong, India, Indonesia
and the Netherlands are located on leased land.

     The principal facilities leased by subsidiaries in locations outside the
United States are: (i) administrative offices and manufacturing facilities of
the fumed silica and microelectronics materials businesses in Wales; (ii)
administrative offices, research and development facilities, and warehouses of
the carbon black operations in France, Malaysia and England; and (iii)
administrative offices and manufacturing facilities of the specialty fluids
business in Canada. In addition, the Company holds mining rights in Canada.

     The principal facilities leased by the Company in the United States are:
(i) its corporate headquarters in Massachusetts; (ii) the administrative offices
and manufacturing facilities of its microelectronics materials business in
Illinois; and (iii) the headquarters of its North American carbon black business
in Georgia. The Company expects to move its corporate headquarters to a new
location within the same city in September 2000. That new space will also be
leased.

     The Company's administrative offices are generally suitable and adequate
for their intended purposes. Existing manufacturing facilities of the Company
are sufficient to meet the Company's anticipated requirements for the
foreseeable future.

ITEM 3.  LEGAL PROCEEDINGS

     The Company is a defendant in various lawsuits and environmental
proceedings wherein substantial amounts are claimed. The following is a
description of the significant proceedings pending as of September 30, 1999,
unless otherwise specified.

  Environmental Proceedings

     In November 1997, Cabot was sued in the District Court of Potter County,
Texas by K N Energy, Inc. ("KNE") and various related entities for environmental
remediation costs at approximately 45 gas plants and compressor stations located
in New Mexico, Oklahoma and Texas. Cabot sold its subsidiaries that owned those
properties in two separate transactions in 1989, and, in doing so, undertook
certain contractual obligations with respect to environmental conditions at the
properties. KNE alleges to be the assignee of those contract rights and,
pursuant thereto, has attempted to require Cabot to pay for costs KNE has
incurred and will incur in the future to remediate environmental contamination
alleged to be on those properties. In July 1998, an arbitration panel ordered
Cabot to pay $3.38 million for past response costs incurred by KNE as well as an
unspecified amount for prejudgment interest and arbitration costs. KNE contends
that the interest on the past cost award and costs of arbitration amount to
approximately $729,000. Cabot has disputed the interest and a portion of the
cost figures, but has paid KNE the amount awarded for past response costs and
the portion of the arbitration costs not in dispute. The panel also ordered
Cabot to pay up to 80% of future

                                        8
<PAGE>   10

groundwater remediation costs at six of the sites as such costs are incurred by
KNE. Finally, the panel ordered KNE to ensure that future remedial actions are
cost-effective and based on health risks, with a preference for natural
attenuation of contamination. Cabot has appealed the panel's award of future
costs. Future remediation costs are estimated to be in a range from less than $2
million to up to $5 million. Cabot and KNE continue to explore settlement of
this matter.

     In 1994, Cabot and the State of Florida agreed to a settlement of a 1983
state court lawsuit requiring Cabot to pay the State $650,000 in past costs
associated with a site in Gainesville, Florida. Cabot also paid the United
States Environmental Protection Agency ("EPA") $416,000 for costs incurred by
EPA at the site. The site included a parcel of land on which Cabot previously
owned and operated a pine tar distillation plant. Cabot has completed the
implementation of a soil and groundwater remedy at the site in accordance with
applicable requirements and is currently operating and maintaining the
groundwater collection system at the site and monitoring site conditions. It is
uncertain whether Cabot may be required to perform additional investigations or
remedial work in the future at this site.

     Beginning in May 1986, the Department of Environmental Protection of the
State of New Jersey ("NJDEP") issued directives under the New Jersey Spill
Compensation and Control Act to Cabot and other potentially responsible parties
("PRPs") to fund a remedial investigation for the cleanup of a six acre site in
Old Bridge Township near Perth Amboy, New Jersey. Cabot and other PRPs
contributed funds for a remedial investigation and feasibility study which was
conducted by a consultant to NJDEP. In January 1996, ten companies, including
Cabot, entered into an Administrative Consent Order with NJDEP which required
them to perform an additional study of the site and to handle minor remedial
work. Most of the work required by the 1996 order is complete, and the companies
have submitted the results of their soils investigation to NJDEP. NJDEP has not
determined what, if anything, will be required to address site soils. In 1997,
the companies entered into an Administrative Consent Order with NJDEP whereby
they agreed to contribute funds toward the cost of an interim groundwater remedy
involving the collection of contaminated groundwater at the site and its
conveyance to a local sewer authority over a two year period pending a final
decision concerning long-term groundwater cleanup. The companies are currently
collecting data and evaluating whether a remedy of natural attenuation for
groundwater contamination associated with the site may be acceptable. Until
additional studies are complete, it is not possible to identify what
remediation, if any, will be required at the site. Cabot, along with certain
other PRPs ("Plaintiff PRPs") filed litigation against the current owner of the
property (Spiral Metal), the United States of America, and several other parties
in U. S. District Court for the District of New Jersey in January 1999. The
purpose of the litigation is to obtain deed restrictions on the property
(allowing for non-residential clean-up standards to be applied) from the current
owner and to obtain monetary contributions from the United States and the other
parties which would be applied to future response costs at the site. The
Plaintiff PRPs have commenced settlement discussions with the defendants and the
litigation has essentially been stayed for a designated period to focus the
parties' resources on the settlement discussions. Union Carbide Corp. and Oakite
Products, two PRPs, filed separate related actions, which include contribution
claims against the Plaintiff PRPs. The court has consolidated the three actions,
all of which are subject to the stay on litigation activity pending settlement
discussions.

     In 1986, Cabot sold a manufacturing facility in Reading, Pennsylvania to
NGK Metals, Inc. ("NGK"). In doing so, Cabot agreed to share with NGK the costs
of certain environmental remediation of the Reading plant site. After the sale,
EPA issued an order to NGK requiring it to address soil and groundwater
contamination at the site. In 1996 and 1997, NGK's contractor completed the soil
remediation component of the work. In August 1997, after completion of the soil
cleanup project, the contractor notified NGK that it had incurred substantial
additional costs over the base contract for the work and that NGK was
responsible for these extra costs. NGK, with support from Cabot, disputed this
claim, and in 1998, the contractor brought suit against Cabot, NGK and their
oversight consultant seeking to recover its cost overruns from the project.
Cabot and NGK resolved the dispute with the contractor in late 1999 by agreeing
to pay the contractor a portion of the extra costs. During the soil cleanup
project, an area of additional contamination was discovered by NGK's
consultants. The groundwater remediation component of the work is currently
being designed.

     Cabot is one of approximately 25 parties identified by EPA as PRPs under
the Superfund law with respect to the cleanup of Fields Brook (the "Brook"), a
tributary of the Ashtabula River in northeast Ohio.
                                        9
<PAGE>   11

From 1963 to 1972, Cabot owned two manufacturing facilities located beside the
Brook. Pursuant to an EPA administrative order, 13 companies, including Cabot,
are performing the design and other preliminary work relating to remediation of
sediment in the Brook and soil in the floodplain and wetlands areas adjacent to
the Brook. In 1997, EPA and the companies reached agreement on the remedy for
these areas; EPA made certain changes to that remedy in response to its finding
low levels of previously undetected radioactive material in the Brook. In
addition, EPA's cost recovery claims through the end of 1989 have been settled,
and the companies have negotiated consent decrees with EPA, the State of Ohio
and the Natural Resource Trustees that settle the governments' claims for past
costs and natural resource damages and obligates the companies to implement the
agreed remedy. Those consent decrees were entered by the United States District
Court for the Northern District of Ohio on July 7, 1999. Cabot's share of the
settlement amount is approximately $585,000; Cabot's estimated share of future
remediation costs is approximately $5.6 million. The companies, including Cabot,
that have paid for work at the site are seeking to recover a share of those
costs from other responsible parties.

     During the summer of 1998, Cabot joined a group of companies in forming the
Ashtabula River Cooperative Group ("ARCG") which collectively agreed on an
allocation for funding private party shares of a public/private partnership
established to conduct dredging and remediation of the Ashtabula River (the
"River") in Ashtabula, Ohio. The Ashtabula River Partnership ("ARP") was formed
to address contaminants in the River through a quicker and less expensive
approach than traditionally available under the formal Superfund process. The
ARP also expects to employ substantial public funds from both the federal and
state governments for the project. In September 1999, the ARP issued a
Comprehensive Management Plan ("CMP") proposing a "deep dredging" program for
addressing contaminated River sediment. The CMP estimates the deep dredging
project would cost approximately $42 million, although the ARCG's experts
believe the costs are likely to be significantly higher. Under the statutory
formula available for funding this project, approximately 68% of its cost is to
be borne by the federal government, leaving 32% of the cost for non-federal
participants. The State of Ohio has pledged a contribution of $7 million to the
project. The ARCG expects to be asked to bear a substantial percentage of the
remaining costs. The ARCG and its consultants are working with the ARP to refine
the project in an effort to reduce project costs and uncertainties.

     In 1994, Detrex Chemical Industries, Inc. filed third-party complaints
against eight companies, including Cabot, in connection with material allegedly
sent to the Koski/Reserve Environmental Services ("RES") landfill in Ashtabula,
Ohio. Cabot and other third-party defendants filed complaints against five
additional companies that sent waste to the site. In May 1998, Cabot and certain
other defendants agreed to settle their liability for this matter by agreeing to
fund and conduct a portion of the remedy at the landfill site and to loan RES
$1.2 million to fund cleanup activities of RES on other portions of the site.
Cabot is one of five of the settling defendants that agreed to conduct the work;
the others made one-time cash payments to resolve their liabilities at the site.
Cabot anticipates that the cost of the settlement to Cabot, including the loan
to RES, is approximately $600,000.

     Cabot is the holder of a Nuclear Regulatory Commission ("NRC") license for
certain slag waste material deposited on industrial property on Tulpehocken
Street in Reading, Pennsylvania in the late 1960s by a predecessor of Cabot that
had leased a portion of the site to process tin slags. The slag material
contains low levels of uranium and thorium, thus subjecting it to NRC
jurisdiction. A consultant for Cabot has prepared a site decommissioning plan
for the slag material which concludes that the levels of radioactivity in the
slag are low enough that the material can be safely left in place and still meet
NRC requirements for license termination without restrictions. Cabot's
decommissioning plan proposing this in-place remedy was filed with the NRC in
late August 1998. The current owner of the Tulpehocken Street site, the City of
Reading and the Reading Redevelopment Authority have filed requests for a
hearing with the NRC concerning Cabot's decommissioning plan, alleging various
deficiencies with the plan. Cabot has discussed its decommissioning plan with
these parties and continues to explore settlement discussions with them
concerning their claims. The NRC has asked Cabot for additional information
concerning its plan, and Cabot is in the process of obtaining the information
the NRC has requested.

     In July 1991, EPA instituted litigation against a number of parties, not
including Cabot, seeking to recover its costs incurred in connection with an
investigation of the Berks Associates Superfund Site in
                                       10
<PAGE>   12

Douglassville, Pennsylvania. Cabot was joined in this litigation as a
third-party defendant. The litigation has been stayed pending settlement
negotiations. In April 1996, EPA proposed that ten companies, including Cabot,
undertake the remaining remediation required at the site and indicated it would
be willing to reconsider, to some extent, the remediation technology to be used.
After further study, the EPA agreed that the alternative remedy is feasible. The
companies' consultant estimates the cost to implement the alternative remedy at
the site is approximately $13 million to $18 million. EPA is in the process of
negotiating a Consent Decree with the companies, including Cabot, concerning
implementation of the alternative remedy. EPA also has claimed approximately $16
million in past costs at the site, and the companies are also negotiating this
claim with EPA.

     In 1994, five plaintiffs filed suit in the U.S. District Court for the
Eastern District of Pennsylvania against 24 defendants, including Cabot, under
the Superfund law and state law seeking recovery of remediation costs at the
Berks Landfill site, which is located in the vicinity of Reading, Pennsylvania.
The plaintiffs claim that the former Cabot beryllium alloy plant located in
Reading, Pennsylvania sent waste to the Berks Landfill. The plaintiffs claim to
have incurred approximately $3 million on investigations and interim remedial
measures at the site. In 1997, EPA issued a Record of Decision ("ROD") for the
site. The ROD selected as a remedy the repair and maintenance of an existing cap
at the landfill, the operation and maintenance of a leachate management system,
long-term monitoring of groundwater and implementation of deed restrictions at
the site. EPA estimated the 30-year present net worth of these measures at
approximately $6 million. In 1998, EPA issued Unilateral Administrative Orders
("UAOs") to a number of the companies requiring them to implement the ROD. Cabot
did not receive a UAO. In September 1999, EPA wrote Cabot and a number of other
companies informing them that it was considering offering them a de minimis
settlement for their liability at the site. The letter indicated Cabot's share
of this settlement would be $187,500. EPA subsequently withdrew this offer.
Cabot is in negotiations with the plaintiffs concerning a possible settlement of
their claims related to the site. If a settlement with the plaintiffs can be
agreed to, Cabot anticipates that it would include an indemnity against any
claims by EPA for costs related to the site.

     In 1994, EPA issued a Unilateral Administrative Order to Cabot and 11 other
respondents pursuant to the Superfund law with respect to the Revere Chemical
Site (a/k/a Echo Site) in Nockamixon Township, Bucks County, Pennsylvania (the
"Revere Chemical Site"). The order required the respondents to design and
implement several remedial measures at the Revere Chemical Site. Cabot responded
to EPA's order by indicating that it should not have been named as a respondent
and by raising several objections to the order. Certain other recipients of the
order proceeded to conduct the work required by EPA, and Cabot understands that
work has been mostly completed. Cabot has been informed by the parties
performing the work that the total cost of remediation activities at the site is
estimated to be approximately $12 million, not including certain unreimbursed
costs claimed by EPA. Cabot has initiated communications with the parties that
conducted the work in order to explore whether settlement of Cabot's potential
liability at the site may be feasible. Those discussions are on-going. In August
1999, Cabot received a letter from the U.S. Department of Justice ("DOJ"), which
stated that EPA had asked the DOJ to bring an enforcement action against Cabot
for its failure to comply with the EPA order. Cabot has entered into settlement
discussions with the DOJ and EPA in an attempt to resolve that dispute.

     In July 1998, EPA informed Cabot that it will be undertaking corrective
action under the Resource Conservation and Recovery Act at Cabot's facility in
Boyertown, Pennsylvania. The Army Corps of Engineers performed a site visit in
September 1998 to initiate this action. It is unclear at this time what
corrective action, if any, will be required at the site and what costs Cabot may
incur as a result. Cabot is aware that EPA is investigating certain areas
surrounding the Boyertown facility with a view to determining what conditions
exist in those areas and whether those conditions are related to Cabot's
Boyertown facility. EPA's investigation was prompted by media reports of
complaints by area farmers of health impacts and damage to livestock and crops.
As of November 24, 1999, EPA had neither taken any formal action nor alleged
that Cabot has any responsibility for conditions in the area. In addition, the
Pennsylvania Department of Environmental Protection has requested that Cabot
conduct additional groundwater investigations at the Boyertown facility to
supplement studies conducted in the early 1990s. In November 1999, Cabot
received a letter from an attorney

                                       11
<PAGE>   13

representing certain farmers in the area threatening litigation concerning
environmental contamination alleged to be caused by the Boyertown plant.

     In October 1998, the Direction Regionale de L'Industrie, de la Recherche et
de L'Environment ("DRIRE") and the Prefecture de la Seine-Maratime (the
"Prefecture") notified United Chemical France S.A. ("UCF"), a French subsidiary
of Cabot, that DRIRE planned to seek an order (the "Proposed Order") from the
Prefecture requiring UCF to undertake an initial investigation of a waste dump
allegedly operated by UCF from the mid-1960s to the early 1980s in the Town of
Notre Dame de Gravenchon. The Prefecture issued a draft order to UCF dated
November 19, 1998, requiring an investigation of the former waste dump. UCF
responded to the draft order by submitting formal comments, noting that it is
not the proper party to address conditions at the dump as it is currently being
used by the Town of Notre Dame de Gravenchon for waste disposal. In early 1999,
UCF voluntarily provided the DRIRE with information concerning UCF's use of the
landfill. UCF has had no further communications with the DRIRE since that date.
When Cabot purchased UCF in 1985, the seller indemnified Cabot for matters
relating to events occurring prior to the sale, including environmental matters.
Cabot has notified the seller that Cabot believes that the indemnification would
cover costs related to the Proposed Order.

     In January 1999, DRIRE notified Cabot France S.A., a French subsidiary of
Cabot, that the DRIRE was investigating groundwater pollution in the Montee des
Pins area where Cabot France S.A.'s carbon black plant in Berre l'Etang, France
is located. The DRIRE convened meetings of various industries in the area and
asked them to work together on a study of groundwater conditions in the area.
Ten companies, including Cabot France S.A., are working together to fund and
undertake the initial study requested by the DRIRE. Cabot estimates that its
share of this initial study will cost less than $10,000. It is not possible at
this point to predict whether groundwater remediation will be required, how much
it will cost or what Cabot France S.A.'s share of such groundwater remediation
will be.

     Cabot, along with a number of other companies, is a PRP under the Superfund
law with respect to the King of Prussia Technical Corp. site in Winslow
Township, New Jersey. Work on site remediation was completed several years ago
except for ongoing operation and maintenance of groundwater treatment
facilities. Cabot and four other companies involved have agreed on the portions
of the costs to be borne by each company. In a December 22, 1998 letter to Cabot
and the other four companies, EPA demanded approximately $4.1 million in past
costs at the site. Cabot expects that this dispute will be resolved through
settlement negotiations between the group of companies and EPA for significantly
less than the $4.1 million demand. The prior agreement among Cabot and the four
other companies fixes each party's respective share of any costs to be paid to
EPA.

     On June 5, 1999, there was a break in the pipeline used to transport carbon
black feedstock from a nearby port to a Ravenna, Italy carbon black facility
owned by Cabot Italiana S.p.A., a wholly-owned subsidiary of Cabot. The break
was in a portion of the pipeline adjacent to a neighboring facility. As a
result, a substantial amount of carbon black feedstock was released at the
neighboring facility. An investigation of the facts to determine
responsibilities is ongoing, but preliminary information from the investigation
indicates the pipeline was damaged from drilling activity conducted by a third
party. In the interim, emergency remediation efforts were undertaken by the
Company following the spill. Claims have been asserted against the Company by
the owner of the facility where the spill occurred and by the owners of a sewer
system into which some of the oil flowed. In addition, the Company has asserted
a claim against the third parties that the Company believes damaged the pipeline
and, thus, caused the spill. The municipal environmental authorities have issued
an order to the Company and the parties believed to have damaged the pipeline
ordering them to undertake further activities to address conditions caused by
the spill. The Company and the other parties have challenged issuance of the
order, and the matter is being heard by the administrative courts in Italy. The
parties believed to have damaged the pipeline have to date refused to accept
responsibility for the spill. The Company has notified its insurers and they are
involved in the matter. At this point, the Company does not know the likely
course that legal proceedings will take, and does not have an estimate of the
costs, if any, that the Company will ultimately bear.

                                       12
<PAGE>   14

     The Louisiana Department of Environmental Quality ("LADEQ") notified Cabot
in a January 5, 1995 letter of its potential liability with respect to the Great
National Oil/Ida Gas site in Ida, Louisiana (the "Ida Site") and requested
information regarding Cabot's activities related to the Ida Site or involvement
with the Hartsell Oil Company of Rodessa, Louisiana. Cabot responded on February
15, 1995 by indicating that during the 1982 to 1984 time period, Cabot's
Arcadia, Louisiana facility sold used oil to Hartsell for reprocessing. Cabot's
Arcadia facility was sold to Haynes International, Inc. ("Haynes") in December
1986. Cabot believes that it is entitled to indemnity from Haynes pursuant to
the acquisition agreement by which Haynes acquired the facility. Haynes has
denied Cabot's request for indemnification but also requested additional
information concerning this claim. In 1997, Cabot and eight other parties
received a demand letter from LADEQ for oversight costs incurred in connection
with the site from July 1989 to December 1996. Cabot paid its pro-rata share of
those costs in April 1997, which payment was an immaterial amount. Cabot has
received no further written communications concerning the Ida Site.

     Cabot has received various requests for information and notifications that
it may be a PRP at several other Superfund sites.

     As of September 30, 1999, approximately $39 million was reserved for
environmental matters by the Company. This amount represents the Company's
current best estimate of costs likely to be incurred based on its analysis of
the extent of cleanup required, alternative cleanup methods available, abilities
of other responsible parties to contribute and its interpretation of laws and
regulations applicable to each site.

  Other Proceedings

     The Company has various other lawsuits, claims and contingent liabilities
arising in the ordinary course of its business. In the opinion of the Company,
although final disposition of all of its suits and claims may impact the
Company's financial statements in a particular period, they should not, in the
aggregate, have a material adverse effect on the Company's financial position.
(See Note O of the Notes to the Company's Consolidated Financial Statements on
pages 47 and 48 of the Annual Report.)

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

     None.

EXECUTIVE OFFICERS OF THE REGISTRANT

     Set forth below for each person who was an executive officer of Cabot at
the end of the 1999 fiscal year, is information, as of November 30, 1999,
regarding his or her age, position(s) with Cabot, the periods during which he or
she served as an officer and his or her business experience during at least the
past five years:

<TABLE>
<CAPTION>
         NAME           AGE      OFFICES HELD/BUSINESS EXPERIENCE                   DATES HELD
         ----           ---      --------------------------------                   ----------
<S>                     <C>   <C>                                      <C>
William T. Anderson...  44    Cabot Corporation
                                Controller                             September 1997 to present
                              Acting Corporate Controller and
                                Assistant Controller                   February 1997 to September 1997
                              Assistant Controller                     July 1995 to February 1997
                              Private Eyes Sunglass Corporation
                                Chief Operating Officer                1991 to 1995
                              Chief Financial Officer                  1990 to 1991
Samuel W. Bodman......  61    Cabot Corporation
                              Chairman of the Board                    October 1988 to present
                              President                                February 1991 to February 1995
                                                                       January 1987 to October 1988
                              Chief Executive Officer                  February 1988 to present
</TABLE>

                                       13
<PAGE>   15

<TABLE>
<CAPTION>
         NAME           AGE      OFFICES HELD/BUSINESS EXPERIENCE                   DATES HELD
         ----           ---      --------------------------------                   ----------
<S>                     <C>   <C>                                      <C>
Kennett F. Burnes.....  56    Cabot Corporation
                              President                                February 1995 to present
                              Chief Operating Officer                  March 1996 to present
                              Executive Vice President                 October 1988 to February 1995
Robert L. Culver......  51    Cabot Corporation
                              Executive Vice President and
                                Chief Financial Officer                April 1997 to present
                              Northeastern University
                              Senior Vice President and
                                Treasurer                              October 1990 to April 1997
Catharine M. de         41    Cabot Corporation
  Lacy................
                              Vice President                           April 1998 to present
                              Allied Signal, Inc.
                              Vice President, Health, Safety,
                                Environment and Remediation            April 1995 to April 1998
                              Occidental Petroleum Corporation
                              Vice President, Health, Safety,
                                Environment and Risk Management        April 1993 to April 1995
William P. Noglows....  41    Cabot Corporation
                              Executive Vice President                 March 1998 to present
                              Vice President                           February 1994 to March 1998
                              Director of Global Manufacturing         November 1997 to present
                              General Manager, Cab-O-Sil
                                Division                               November 1992 to November 1997
Robert Rothberg.......  50    Cabot Corporation
                              Vice President and
                                General Counsel                        October 1993 to present
Roland R. Silverio....  52    Cabot Corporation
                              Vice President                           May 1998 to present
                              Director of Human Resources/
                                Organizational Effectiveness           May 1998 to present
                              Director of Organizational Development   January 1998 to May 1998
                                                                       October 1992 to October 1995
                              Manager of Training and Development      July 1990 to October 1992
                              The Franklin Group
                              Managing Partner                         October 1995 to January 1998
Donald R. Young.......  42    Cabot Corporation
                              Executive Vice President                 March 1998 to present
                              Vice President                           September 1993 to March 1998
                              General Manager,
                                Carbon Black                           October 1996 to present
                              Director of Carbon Black Marketing and
                                General Manager of Global Tire Sector  January 1996 to October 1996
                              General Manager, Pacific Asia
                                Carbon Black                           August 1993 to December 1995
                              Director of Cogeneration Projects,
                                Carbon Black                           September 1992 to August 1993
</TABLE>

                                       14
<PAGE>   16

                                    PART II

ITEM 5.  MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER
MATTERS

     Cabot's Common Stock is listed for trading (symbol CBT) on the New York,
Boston, and Pacific stock exchanges. As of September 30, 1999, there were
approximately 1,900 holders of record of Cabot's Common Stock. The price range
in which the stock has traded, as reported on the composite tape, and the
quarterly cash dividends for the past two years are shown below.

STOCK PRICE AND DIVIDEND DATA

<TABLE>
<CAPTION>
                                             DECEMBER    MARCH      JUNE     SEPTEMBER     YEAR
                                             --------    ------    ------    ---------    ------
<S>                                          <C>         <C>       <C>       <C>          <C>
FISCAL 1999
Cash dividends per share...................   $ 0.11     $ 0.11    $ 0.11     $ 0.11      $ 0.44
Price range of common stock:
  High.....................................   $31.69     $29.81    $28.50     $25.44      $31.69
  Low......................................   $22.63     $19.75    $21.31     $21.63      $19.75
  Close....................................   $27.94     $21.25    $24.19     $23.75      $23.75
</TABLE>

<TABLE>
<CAPTION>
                                             DECEMBER    MARCH      JUNE     SEPTEMBER     YEAR
                                             --------    ------    ------    ---------    ------
<S>                                          <C>         <C>       <C>       <C>          <C>
FISCAL 1998
Cash dividends per share...................   $ 0.10     $ 0.10    $ 0.11     $ 0.11      $ 0.42
Price range of common stock:
  High.....................................   $28.19     $39.94    $38.81     $33.38      $39.94
  Low......................................   $23.63     $25.25    $31.06     $21.75      $21.75
  Close....................................   $27.63     $36.88    $32.31     $24.94      $24.94
</TABLE>

                                       15
<PAGE>   17

ITEM 6.  SELECTED FINANCIAL DATA

     Cabot Corporation Selected Financial Data:

<TABLE>
<CAPTION>
                                                             YEARS ENDED SEPTEMBER 30
                                                ---------------------------------------------------
                                                 1999       1998       1997       1996       1995
                                                -------    -------    -------    -------    -------
                                                  (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                             <C>        <C>        <C>        <C>        <C>
Financial Highlights
Net sales and other operating revenues........  $1,695     $1,644     $1,625     $1,856     $1,830
                                                ------     ------     ------     ------     ------
  Income before cumulative effect of
     accounting changes.......................  $   97     $  122     $   93     $  194     $  172
                                                ------     ------     ------     ------     ------
  Long-term debt..............................  $  419     $  316     $  286     $  322     $  306
  Minority interest...........................      32         25         23         27          8
  Stockholders' equity........................     706        706        728        745        685
                                                ------     ------     ------     ------     ------
          Total capitalization................  $1,157     $1,047     $1,037     $1,094     $  999
                                                ------     ------     ------     ------     ------
          Total assets........................  $1,842     $1,805     $1,826     $1,857     $1,654
                                                ------     ------     ------     ------     ------
Income per common share:
  Basic.......................................  $ 1.47     $ 1.80     $ 1.33     $ 2.74     $ 2.29
  Diluted.....................................  $ 1.31     $ 1.61     $ 1.19     $ 2.42     $ 2.03
  Cash dividends (declared and paid)..........  $ 0.44     $ 0.42     $ 0.40     $ 0.36     $ 0.30
                                                ------     ------     ------     ------     ------
Weighted average common shares outstanding in
  millions....................................      73         75         77         79         84
                                                ------     ------     ------     ------     ------
</TABLE>

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

     The information required appears in the Annual Report on pages 21 through
29 and is incorporated herein by reference.

ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

     The information required appears in the Annual Report on pages 25 and 26
and is incorporated herein by reference.

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

     The information required appears in the Annual Report on pages 30 through
53 and is incorporated herein by reference.

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

     None.

                                       16
<PAGE>   18

                                    PART III

ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

     The information required regarding the executive officers of Cabot is
included in Part I in the unnumbered item captioned "Executive Officers of the
Registrant." Certain information required regarding the directors of Cabot is
contained in the Registrant's Proxy Statement for the 2000 Annual Meeting of
Stockholders ("Proxy Statement") under the heading "Certain Information
Regarding Directors." Certain information required regarding the failure of any
person subject to Section 16 of the Securities Exchange Act of 1934, as amended
(the "Exchange Act"), to timely file reports required by Section 16(a) of the
Exchange Act is contained in the Proxy Statement under the heading "Compliance
with Section 16(a) of the Exchange Act." All of such information is incorporated
herein by reference.

ITEM 11.  EXECUTIVE COMPENSATION

     The information required is contained in the Proxy Statement under the
heading "Executive Compensation." All of such information is incorporated herein
by reference.

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

     The information required is contained in the Proxy Statement under the
heading "Beneficial Stock Ownership of Directors, Executive Officers and Persons
Owning More than Five Percent of Common Stock." All of such information is
incorporated herein by reference.

ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     The information required is contained in the Proxy Statement under the
heading "Certain Relationships and Related Transactions." All of such
information is incorporated herein by reference.

                                       17
<PAGE>   19

                                    PART IV

ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

     (a) Financial Statements.  The following are incorporated herein by
reference in this Report from the indicated pages of the Company's Annual
Report:

<TABLE>
<CAPTION>
                        DESCRIPTION                           PAGE
                        -----------                           -----
<S>                                                           <C>
(1) Consolidated Balance Sheets at September 30, 1999 and
    1998....................................................  30-31
(2) Consolidated Statements of Income for each of the three
    fiscal years in the period ended September 30, 1999.....     32
(3) Consolidated Statements of Cash Flows for each of the
    three fiscal years in the period ended September 30,
    1999....................................................     33
(4) Consolidated Statements of Changes in Stockholders'
    Equity..................................................  34-35
(5) Notes to Consolidated Financial Statements..............  36-51
(6) Statement of Management Responsibility and Report of
    Independent Accountants relating to the Consolidated
    Financial Statements listed above.......................     52
</TABLE>

     (b) Reports on Form 8-K.  None.

     (c) Exhibits.  (Not included in copies of the Form 10-K sent to
         stockholders.)

     The exhibit numbers in the following list correspond to the numbers
assigned to such exhibits in the Exhibit Table of Item 601 of Regulation S-K.
The Company will furnish to any stockholder, upon written request, any exhibit
listed below, upon payment by such stockholder to the Company of the Company's
reasonable expenses in furnishing such exhibit.

<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                             DESCRIPTION
  -------                            -----------
<S>          <C>
 3(a)        -- Certificate of Incorporation of Cabot Corporation
             restated effective October 24, 1983, as amended February 14,
                1985, December 3, 1986, February 19, 1987, November 18,
                1988, November 24, 1995 and March 12, 1996 (incorporated
                herein by reference to Exhibit 3(a) of Cabot's Annual
                Report on Form 10-K for the year ended September 30,
                1996, file reference 1-5667, filed with the Commission on
                December 24, 1996).
 3(b)        -- The By-laws of Cabot Corporation as of January 11, 1991
             (incorporated herein by reference to Exhibit 3(b) of Cabot's
                Annual Report on Form 10-K for the year ended September
                30, 1991, file reference 1-5667, filed with the
                Commission on December 27, 1991).
 4(a)        -- Rights Agreement, dated as of November 10, 1995, between
             Cabot Corporation and The First National Bank of Boston as
                Rights Agent (incorporated herein by reference to Exhibit
                1 of Cabot's Registration Statement on Form 8-A, file
                reference 1-5667, filed with the Commission on November
                13, 1995).
 4(b)(i)     -- Indenture, dated as of December 1, 1987, between Cabot
             Corporation and The First National Bank of Boston, Trustee
                (incorporated herein by reference to Exhibit 4 of
                Amendment No. 1 to Cabot's Registration Statement on Form
                S-3, Registration No. 33-18883, filed with the Commission
                on December 10, 1987).
 4(b)(ii)    -- First Supplemental Indenture dated as of June 17, 1992,
             to Indenture, dated as of December 1, 1987, between Cabot
                Corporation and The First National Bank of Boston,
                Trustee (incorporated by reference to Exhibit 4.3 of
                Cabot's Registration Statement on Form S-3, Registration
                Statement No. 33-48686, filed with the Commission on June
                18, 1992).
</TABLE>

                                       18
<PAGE>   20

<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                             DESCRIPTION
  -------                            -----------
<S>          <C>
 4(b)(iii)   -- Second Supplemental Indenture, dated as of January 31,
             1997, between Cabot Corporation and State Street Bank and
                Trust Company, Trustee (incorporated herein by reference
                to Exhibit 4 of Cabot's Quarterly Report on Form 10-Q for
                the quarterly period ended December 31, 1996, file
                reference 1-5667, filed with the Commission on February
                14, 1997).
 4(b)(iv)    -- Third Supplemental Indenture, dated as of November 20,
             1998, between Cabot Corporation and State Street Bank and
                Trust Company, Trustee (incorporated herein by reference
                to Exhibit 4.1 of Cabot's Current Report on Form 8-K,
                dated November 20, 1998, file reference 1-5667, filed
                with the Commission on November 20, 1998).
10(a)        -- Credit Agreement, dated as of January 3, 1997, among
             Cabot Corporation, the banks listed therein and Morgan
                Guaranty Trust Company of New York, as Agent
                (incorporated herein by reference to Exhibit 10 of
                Cabot's Quarterly Report on Form 10-Q for the quarterly
                period ended March 31, 1997, file reference 1-5667, filed
                with the Commission on May 14, 1997).
10(b)(i)*    -- Equity Incentive Plan, as amended (incorporated herein by
             reference to Exhibit 99 of Cabot's Registration Statement on
                Form S-8, Registration No. 33-28699, filed with the
                Commission on May 12, 1989).
10(b)(ii)*   -- 1996 Equity Incentive Plan (incorporated herein by
             reference to Exhibit 28 of Cabot's Registration Statement on
                Form S-8, Registration No. 333-03683, filed with the
                Commission on May 14, 1996).
10(b)(iii)*  -- 1999 Equity Incentive Plan (incorporated herein by
             reference to Exhibit 10.1 of Cabot's Quarterly Report on
                Form 10-Q for the quarterly period ended March 31, 1999,
                file reference 1-5667, filed with the Commission on May
                17, 1999).
10(c)        -- Note Purchase Agreement between John Hancock Mutual Life
             Insurance Company, State Street Bank and Trust Company, as
                trustee for the Cabot Corporation Employee Stock
                Ownership Plan, and Cabot Corporation, dated as of
                November 15, 1988 (incorporated by reference to Exhibit
                10(c) of Cabot's Annual Report on Form 10-K for the year
                ended September 30, 1988, file reference 1-5667, filed
                with the Commission on December 29, 1988).
10(d)(i)*    -- Supplemental Cash Balance Plan (incorporated herein by
             reference to Exhibit 10(e)(i) of Cabot's Annual Report on
                Form 10-K for the year ended September 30, 1994, file
                reference 1-5667, filed with the Commission on December
                22, 1994).
10(d)(ii)*   -- Supplemental Employee Stock Ownership Plan (incorporated
             herein by reference to Exhibit 10(e)(ii) of Cabot's Annual
                Report on Form 10-K for the year ended September 30,
                1994, file reference 1-5667, filed with the Commission on
                December 22, 1994).
10(d)(iii)*  -- Supplemental Retirement Incentive Savings Plan
             (incorporated herein by reference to Exhibit 10(e)(iii) of
                Cabot's Annual Report on Form 10-K for the year ended
                September 30, 1994, file reference 1-5667, filed with the
                Commission on December 22, 1994).
10(d)(iv)*   -- Supplemental Employee Benefit Agreement with John G.L.
             Cabot (incorporated herein by reference to Exhibit 10(f) of
                Cabot's Annual Report on Form 10-K for the year ended
                September 30, 1987, file reference 1-5667, filed with the
                Commission on December 28, 1987).
10(d)(v)*    -- Cabot Corporation Deferred Compensation Plan dated
             January 1, 1995 (incorporated herein by reference to Exhibit
                10(e)(v) of Cabot's Annual Report on Form 10-K for the
                year ended September 30, 1995, file reference 1-5667,
                filed with the Commission on December 29, 1995).
10(d)(vi)*   -- Amendment 1997-I to Cabot Corporation Deferred
             Compensation Plan dated June 30, 1997 (incorporated herein
                by reference to Exhibit 10(d)(vi) of Cabot's Annual
                Report on Form 10-K for the year ended September 30,
                1997, file reference 1-5667, filed with the Commission on
                December 24, 1997).
</TABLE>

                                       19
<PAGE>   21

<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                             DESCRIPTION
  -------                            -----------
<S>          <C>
10(e)        -- Group Annuity Contract No. GA-6121 between The Prudential
             Insurance Company of America and State Street Bank and Trust
                Company, dated June 28, 1991 (incorporated herein by
                reference to Exhibit 10(h) of Cabot's Annual Report on
                Form 10-K for the year ended September 30, 1991, file
                reference 1-5667, filed with the Commission on December
                27, 1991).
10(f)*       -- Non-employee Directors' Stock Compensation Plan
             (incorporated herein by reference to Exhibit A of Cabot's
                Proxy Statement for its 1992 Annual Meeting of
                Stockholders, file reference 1-5667, filed with the
                Commission on December 27, 1991).
10(g)        -- Agreement for the Sale and Purchase of Liquefied Natural
             Gas and Transportation Agreement, dated April 13, 1976,
                between L'Entreprise Nationale pour la Recherche, la
                Production, le Transport, la Transformation et la
                Commercialisation des Hydrocarbures ("Sonatrach") and
                Distrigas Corporation, and Amendment No. 3 to said
                Agreement, dated February 21, 1988 (incorporated herein
                by reference to Exhibit 10(j) of Cabot's Annual Report on
                Form 10-K for the year ended September 30, 1994, file
                reference 1-5667, filed with the Commission on December
                22, 1994).
10(h)        -- Agreement for the Sale and Purchase of Liquefied Natural
             Gas, dated December 11, 1988, between Sonatrading Amsterdam
                B.V. ("Sonatrading") and Distrigas Corporation and
                Transportation Agreement, dated December 11, 1988,
                between Sonatrach and Distrigas Corporation (incorporated
                herein by reference to Exhibit 10(p) of Cabot's Annual
                Report on Form 10-K for the year ended September 30,
                1989, file reference 1-5667, filed with the Commission on
                December 28, 1989).
10(i)        -- Mutual Assurances Agreements among Cabot Corporation,
             Sonatrach, Distrigas Corporation and Sonatrading dated
                February 21, 1988 and December 11, 1988, respectively
                (incorporated herein by reference to Exhibit 10.1 of
                Cabot's Current Report on Form 8-K dated July 17, 1992,
                file reference 1-5667, filed with the Commission July 17,
                1992).
10(j)(i)     -- Asset Transfer Agreement, dated as of June 13, 1995,
             among Cabot Safety Corporation, Cabot Canada Ltd., Cabot
                Safety Limited, Cabot Corporation, Cabot Safety Holdings
                Corporation and Cabot Safety Acquisition Corporation
                (incorporated herein by reference to Exhibit 2(a) of
                Cabot Corporation's Current Report on Form 8-K, dated
                July 11, 1995, file reference 1-5667, filed with the
                Commission July 26, 1995).
10(j)(ii)    -- Stockholders' Agreement, dated as of July 11, 1995, among
             Vestar Equity Partners, L.P., Cabot CSC Corporation, Cabot
                Safety Holdings Corporation, Cabot Corporation and
                various other parties thereto (incorporated herein by
                reference to Exhibit 2(b) of Cabot Corporation's Current
                Report on Form 8-K, dated July 11, 1995, file reference
                1-5667, filed with the Commission July 26, 1995).
10(k)*       -- Cabot Corporation Senior Management Severance Protection
             Plan, effective January 9, 1998 (incorporated herein by
                reference to exhibit 10(a) of Cabot's Quarterly Report on
                Form 10-Q for the quarterly period ended December 31,
                1997, file reference 1-5667, filed with the Commission
                February 17, 1998).
10(l)*       -- Cabot Corporation Key Employee Severance Protection Plan,
             effective January 9, 1998 (incorporated herein by reference
                to exhibit 10(b) of Cabot's Quarterly Report on Form 10-Q
                for the quarterly period ended December 31, 1997, file
                reference 1-5667, filed with the Commission February 17,
                1998).
10(m)*       -- Cabot Corporation Short-Term Incentive Compensation Plan
             (incorporated herein by reference to Exhibit 10.2 of Cabot's
                Quarterly Report on Form 10-Q for the quarterly period
                ended March 31, 1999, file reference 1-5667, filed with
                the Commission on May 17, 1999).
12           -- Statement Re: Computation of Ratios of Earnings to Fixed
                Charges, filed herewith.
13           -- Pages 21 through 53 of the 1999 Annual Report to
             Stockholders of Cabot Corporation, a copy of which is
                furnished for the information of the Securities and
                Exchange Commission. Portions of the Annual Report not
                incorporated herein by reference are not deemed "filed"
                with the Commission.
</TABLE>

                                       20
<PAGE>   22

<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                             DESCRIPTION
  -------                            -----------
<S>          <C>
21           -- List of Significant Subsidiaries, filed herewith.
23           -- Consent of PricewaterhouseCoopers LLP, filed herewith.
24           -- Power of attorney for signing of this Annual Report on
                Form 10-K, filed herewith.
27.1         -- Financial Data Schedule for fiscal year ended September
             30, 1999, filed herewith.
27.2         -- Restated Financial Data Schedule for fiscal year ended
                September 30, 1998, filed herewith.
27.3         -- Restated Financial Data Schedule for fiscal year ended
                September 30, 1997, filed herewith.
</TABLE>

- ---------------
* Management contract or compensatory plan or arrangement.

     (d) Schedules.  The Schedules have been omitted for the reason that they
are not required or are not applicable, or the required information is shown in
the financial statements or notes thereto.

                                       21
<PAGE>   23

                                   SIGNATURES

     Pursuant to the requirements of Section 13 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.

                                          CABOT CORPORATION (Registrant)

                                          By:     /s/ SAMUEL W. BODMAN
                                            ------------------------------------
                                                     SAMUEL W. BODMAN,
                                                 Chairman of the Board and
                                                  Chief Executive Officer

Date:  December 29, 1999

     Pursuant to the requirement 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.

<TABLE>
<CAPTION>
                    SIGNATURES                                   TITLE                     DATE
                    ----------                                   -----                     ----
<C>                                                  <S>                             <C>
               /s/ SAMUEL W. BODMAN                  Director, Chairman of the       December 29, 1999
- ---------------------------------------------------  Board and Chief Executive
                 SAMUEL W. BODMAN                    Officer (principal executive
                                                     officer)

                         *                           Director and President          December 29, 1999
- ---------------------------------------------------
                 KENNETT F. BURNES

               /s/ ROBERT L. CULVER                  Executive Vice President and    December 29, 1999
- ---------------------------------------------------  Chief Financial Officer
                 ROBERT L. CULVER                    (principal financial officer)

              /s/ WILLIAM T. ANDERSON                Controller                      December 29, 1999
- ---------------------------------------------------  (principal accounting officer)
                WILLIAM T. ANDERSON

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                  JANE C. BRADLEY

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                  JOHN G.L. CABOT

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                 JOHN S. CLARKESON

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                ARTHUR L. GOLDSTEIN

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                ROBERT P. HENDERSON

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                  ARNOLD S. HIATT
</TABLE>

                                       22
<PAGE>   24

<TABLE>
<CAPTION>
                    SIGNATURES                                   TITLE                     DATE
                    ----------                                   -----                     ----
<C>                                                  <S>                             <C>
                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                  GAUTAM S. KAJI

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
               RODERICK C.G. MACLEOD

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                 JOHN H. MCARTHUR

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                  JOHN F. O'BRIEN

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                  DAVID V. RAGONE

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
               CHARLES P. SIESS, JR.

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                  LYDIA W. THOMAS

                         *                           Director                        December 29, 1999
- ---------------------------------------------------
                 MARK S. WRIGHTON

             *By: /s/ SARAH W.S. KISH
   ---------------------------------------------
                  SARAH W.S. KISH
                AS ATTORNEY-IN-FACT
</TABLE>

                                       23
<PAGE>   25

                                 EXHIBIT INDEX

<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                             DESCRIPTION
  -------                            -----------
<S>          <C>
 3(a)        -- Certificate of Incorporation of Cabot Corporation
             restated effective October 24, 1983, as amended February 14,
                1985, December 3, 1986, February 19, 1987, November 18,
                1988, November 24, 1995 and March 12, 1996 (incorporated
                herein by reference to Exhibit 3(a) of Cabot's Annual
                Report on Form 10-K for the year ended September 30,
                1996, file reference 1-5667, filed with the Commission on
                December 24, 1996).
 3(b)        -- The By-laws of Cabot Corporation as of January 11, 1991
             (incorporated herein by reference to Exhibit 3(b) of Cabot's
                Annual Report on Form 10-K for the year ended September
                30, 1991, file reference 1-5667, filed with the
                Commission on December 27, 1991).
 4(a)        -- Rights Agreement, dated as of November 10, 1995, between
             Cabot Corporation and The First National Bank of Boston as
                Rights Agent (incorporated herein by reference to Exhibit
                1 of Cabot's Registration Statement on Form 8-A, file
                reference 1-5667, filed with the Commission on November
                13, 1995).
 4(b)(i)     -- Indenture, dated as of December 1, 1987, between Cabot
             Corporation and The First National Bank of Boston, Trustee
                (incorporated herein by reference to Exhibit 4 of
                Amendment No. 1 to Cabot's Registration Statement on Form
                S-3, Registration No. 33-18883, filed with the Commission
                on December 10, 1987).
 4(b)(ii)    -- First Supplemental Indenture dated as of June 17, 1992,
             to Indenture, dated as of December 1, 1987, between Cabot
                Corporation and The First National Bank of Boston,
                Trustee (incorporated by reference to Exhibit 4.3 of
                Cabot's Registration Statement on Form S-3, Registration
                Statement No. 33-48686, filed with the Commission on June
                18, 1992).
 4(b)(iii)   -- Second Supplemental Indenture, dated as of January 31,
             1997, between Cabot Corporation and State Street Bank and
                Trust Company, Trustee (incorporated herein by reference
                to Exhibit 4 of Cabot's Quarterly Report on Form 10-Q for
                the quarterly period ended December 31, 1996, file
                reference 1-5667, filed with the Commission on February
                14, 1997).
 4(b)(iv)    -- Third Supplemental Indenture, dated as of November 20,
             1998, between Cabot Corporation and State Street Bank and
                Trust Company, Trustee (incorporated herein by reference
                to Exhibit 4.1 of Cabot's Current Report on Form 8-K,
                dated November 20, 1998, file reference 1-5667, filed
                with the Commission on November 20, 1998).
10(a)        -- Credit Agreement, dated as of January 3, 1997, among
             Cabot Corporation, the banks listed therein and Morgan
                Guaranty Trust Company of New York, as Agent
                (incorporated herein by reference to Exhibit 10 of
                Cabot's Quarterly Report on Form 10-Q for the quarterly
                period ended March 31, 1997, file reference 1-5667, filed
                with the Commission on May 14, 1997).
10(b)(i)*    -- Equity Incentive Plan, as amended (incorporated herein by
             reference to Exhibit 99 of Cabot's Registration Statement on
                Form S-8, Registration No. 33-28699, filed with the
                Commission on May 12, 1989).
10(b)(ii)*   -- 1996 Equity Incentive Plan (incorporated herein by
             reference to Exhibit 28 of Cabot's Registration Statement on
                Form S-8, Registration No. 333-03683, filed with the
                Commission on May 14, 1996).
10(b)(iii)*  -- 1999 Equity Incentive Plan (incorporated herein by
             reference to Exhibit 10.1 of Cabot's Quarterly Report on
                Form 10-Q for the quarterly period ended March 31, 1999,
                file reference 1-5667, filed with the Commission on May
                17, 1999).
</TABLE>
<PAGE>   26

<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                             DESCRIPTION
  -------                            -----------
<S>          <C>
10(c)        -- Note Purchase Agreement between John Hancock Mutual Life
             Insurance Company, State Street Bank and Trust Company, as
                trustee for the Cabot Corporation Employee Stock
                Ownership Plan, and Cabot Corporation, dated as of
                November 15, 1988 (incorporated by reference to Exhibit
                10(c) of Cabot's Annual Report on Form 10-K for the year
                ended September 30, 1988, file reference 1-5667, filed
                with the Commission on December 29, 1988).
10(d)(i)*    -- Supplemental Cash Balance Plan (incorporated herein by
             reference to Exhibit 10(e)(i) of Cabot's Annual Report on
                Form 10-K for the year ended September 30, 1994, file
                reference 1-5667, filed with the Commission on December
                22, 1994).
10(d)(ii)*   -- Supplemental Employee Stock Ownership Plan (incorporated
             herein by reference to Exhibit 10(e)(ii) of Cabot's Annual
                Report on Form 10-K for the year ended September 30,
                1994, file reference 1-5667, filed with the Commission on
                December 22, 1994).
10(d)(iii)*  -- Supplemental Retirement Incentive Savings Plan
             (incorporated herein by reference to Exhibit 10(e)(iii) of
                Cabot's Annual Report on Form 10-K for the year ended
                September 30, 1994, file reference 1-5667, filed with the
                Commission on December 22, 1994).
10(d)(iv)*   -- Supplemental Employee Benefit Agreement with John G.L.
             Cabot (incorporated herein by reference to Exhibit 10(f) of
                Cabot's Annual Report on Form 10-K for the year ended
                September 30, 1987, file reference 1-5667, filed with the
                Commission on December 28, 1987).
10(d)(v)*    -- Cabot Corporation Deferred Compensation Plan dated
             January 1, 1995 (incorporated herein by reference to Exhibit
                10(e)(v) of Cabot's Annual Report on Form 10-K for the
                year ended September 30, 1995, file reference 1-5667,
                filed with the Commission on December 29, 1995).
10(d)(vi)*   -- Amendment 1997-I to Cabot Corporation Deferred
             Compensation Plan dated June 30, 1997 (incorporated herein
                by reference to Exhibit 10(d)(vi) of Cabot's Annual
                Report on Form 10-K for the year ended September 30,
                1997, file reference 1-5667, filed with the Commission on
                December 24, 1997).
10(e)        -- Group Annuity Contract No. GA-6121 between The Prudential
             Insurance Company of America and State Street Bank and Trust
                Company, dated June 28, 1991 (incorporated herein by
                reference to Exhibit 10(h) of Cabot's Annual Report on
                Form 10-K for the year ended September 30, 1991, file
                reference 1-5667, filed with the Commission on December
                27, 1991).
10(f)*       -- Non-employee Directors' Stock Compensation Plan
             (incorporated herein by reference to Exhibit A of Cabot's
                Proxy Statement for its 1992 Annual Meeting of
                Stockholders, file reference 1-5667, filed with the
                Commission on December 27, 1991).
10(g)        -- Agreement for the Sale and Purchase of Liquefied Natural
             Gas and Transportation Agreement, dated April 13, 1976,
                between L'Entreprise Nationale pour la Recherche, la
                Production, le Transport, la Transformation et la
                Commercialisation des Hydrocarbures ("Sonatrach") and
                Distrigas Corporation, and Amendment No. 3 to said
                Agreement, dated February 21, 1988 (incorporated herein
                by reference to Exhibit 10(j) of Cabot's Annual Report on
                Form 10-K for the year ended September 30, 1994, file
                reference 1-5667, filed with the Commission on December
                22, 1994).
10(h)        -- Agreement for the Sale and Purchase of Liquefied Natural
             Gas, dated December 11, 1988, between Sonatrading Amsterdam
                B.V. ("Sonatrading") and Distrigas Corporation and
                Transportation Agreement, dated December 11, 1988,
                between Sonatrach and Distrigas Corporation (incorporated
                herein by reference to Exhibit 10(p) of Cabot's Annual
                Report on Form 10-K for the year ended September 30,
                1989, file reference 1-5667, filed with the Commission on
                December 28, 1989).
</TABLE>
<PAGE>   27

<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                             DESCRIPTION
  -------                            -----------
<S>          <C>
10(i)        -- Mutual Assurances Agreements among Cabot Corporation,
             Sonatrach, Distrigas Corporation and Sonatrading dated
                February 21, 1988 and December 11, 1988, respectively
                (incorporated herein by reference to Exhibit 10.1 of
                Cabot's Current Report on Form 8-K dated July 17, 1992,
                file reference 1-5667, filed with the Commission July 17,
                1992).
10(j)(i)     -- Asset Transfer Agreement, dated as of June 13, 1995,
             among Cabot Safety Corporation, Cabot Canada Ltd., Cabot
                Safety Limited, Cabot Corporation, Cabot Safety Holdings
                Corporation and Cabot Safety Acquisition Corporation
                (incorporated herein by reference to Exhibit 2(a) of
                Cabot Corporation's Current Report on Form 8-K, dated
                July 11, 1995, file reference 1-5667, filed with the
                Commission July 26, 1995).
10(j)(ii)    -- Stockholders' Agreement, dated as of July 11, 1995, among
             Vestar Equity Partners, L.P., Cabot CSC Corporation, Cabot
                Safety Holdings Corporation, Cabot Corporation and
                various other parties thereto (incorporated herein by
                reference to Exhibit 2(b) of Cabot Corporation's Current
                Report on Form 8-K, dated July 11, 1995, file reference
                1-5667, filed with the Commission July 26, 1995).
10(k)*       -- Cabot Corporation Senior Management Severance Protection
             Plan, effective January 9, 1998 (incorporated herein by
                reference to exhibit 10(a) of Cabot's Quarterly Report on
                Form 10-Q for the quarterly period ended December 31,
                1997, file reference 1-5667, filed with the Commission
                February 17, 1998).
10(l)*       -- Cabot Corporation Key Employee Severance Protection Plan,
             effective January 9, 1998 (incorporated herein by reference
                to exhibit 10(b) of Cabot's Quarterly Report on Form 10-Q
                for the quarterly period ended December 31, 1997, file
                reference 1-5667, filed with the Commission February 17,
                1998).
10(m)*       -- Cabot Corporation Short-Term Incentive Compensation Plan
             (incorporated herein by reference to Exhibit 10.2 of Cabot's
                Quarterly Report on Form 10-Q for the quarterly period
                ended March 31, 1999, file reference 1-5667, filed with
                the Commission on May 17, 1999).
12           -- Statement Re: Computation of Ratios of Earnings to Fixed
                Charges, filed herewith.
13           -- Pages 21 through 53 of the 1999 Annual Report to
             Stockholders of Cabot Corporation, a copy of which is
                furnished for the information of the Securities and
                Exchange Commission. Portions of the Annual Report not
                incorporated herein by reference are not deemed "filed"
                with the Commission.
21           -- List of Significant Subsidiaries, filed herewith.
23           -- Consent of PricewaterhouseCoopers LLP, filed herewith.
24           -- Power of attorney for signing of this Annual Report on
                Form 10-K, filed herewith.
27.1         -- Financial Data Schedule for fiscal year ended September
             30, 1999, filed herewith.
27.2         -- Restated Financial Data Schedule for fiscal year ended
                September 30, 1998, filed herewith.
27.3         -- Restated Financial Data Schedule for fiscal year ended
                September 30, 1997, filed herewith.
</TABLE>

- ---------------
* Management contract or compensatory plan or arrangement.

     (d) Schedules.  The Schedules have been omitted for the reason that they
are not required or are not applicable, or the required information is shown in
the financial statements or notes thereto.

<PAGE>   1

                                                                      EXHIBIT 12

                 CABOT CORPORATION AND CONSOLIDATED SUBSIDIARIES

      STATEMENT REGARDING COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
                      (Amounts in millions, except ratios)


<TABLE>
<CAPTION>
                                                                         Years ended September 30
                                                              -----------------------------------------------

                                                               1999      1998       1997      1996      1995
                                                              ------    ------     ------    ------    ------
Earnings:
<S>                                                           <C>       <C>        <C>       <C>       <C>
   Pre-tax income from continuing operations                  $135.7    $168.0     $117.0    $279.8    $256.0
   Distributed income of affiliated companies                   19.9       7.5       10.4      11.2      11.7
   Add fixed charges:
     Interest on indebtedness                                   45.8      42.0       43.2      41.7      35.6
     Portion of rents representative of
       the interest factor                                       4.8       5.1        4.9       4.8       5.5
                                                              ------    ------     ------    ------    ------

  Income as adjusted                                          $206.2    $222.6     $175.5    $337.5    $308.8

Fixed charges:
  Interest on indebtedness                                    $ 45.8    $ 42.0     $ 43.2    $ 41.7    $ 35.6
  Capitalized interest                                            --        --         --        --        --
  Portion of rents representative of
       the interest factor                                       4.8       5.1        4.9       4.8       5.5
                                                              ------    ------     ------    ------    ------

  Total fixed charges                                         $ 50.6    $ 47.1     $ 48.1   $ 46.5    $  41.1

  Ratio of earnings to fixed charges                             4.1       4.7        3.6      7.3        7.5
                                                              ======    ======     ======   ======    =======
</TABLE>



<PAGE>   1
                                                                      EXHIBIT 13


MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS

Cabot Corporation is organized into five reportable segments: Chemicals Group,
Performance Materials ("CPM"), Specialty Fluids ("CSF"), Microelectronics
Materials ("MMD"), and Liquefied Natural Gas ("LNG"). The Chemicals Group is
comprised of the carbon black, fumed silica, plastics, and inkjet colorants
businesses.

         The following discussion of results includes segment sales and
operating profit before taxes ("PBT"). Segment PBT is a measure used by Cabot's
chief operating decision-makers to measure the Company's consolidated operating
results and assess segment performance. (Refer to Note Q of the consolidated
financial statements for a definition of PBT and additional segment
information.)

         Cabot's calculation of segment PBT may not be consistent with the
calculation of PBT of other public companies and segment PBT should not be
viewed by investors as an alternative to Generally Accepted Accounting
Principles ("GAAP") measures of income.

         The following analysis of financial condition and operating results
should be read in conjunction with Cabot's consolidated financial statements and
accompanying notes. Unless a calendar year is specified, all references in this
discussion to years are to Cabot's fiscal years ended September 30.

OVERVIEW

Cabot reported earnings per share of $1.31 versus $1.61 in 1998. The earnings
shortfall is largely the result of reduced margins in Cabot's carbon black
business, lower LNG profits, and $26 million of charges related to cost
reduction initiatives. Carbon black accounts for more than 50% of Cabot's total
PBT. Profitability in the carbon black business was negatively affected by lower
selling prices that more than offset the benefit of lower feedstock costs. In
LNG, lower natural gas selling prices more than offset volume improvements. CPM,
MMD, and Inkjet Colorants all reported improvements in financial performance in
1999.

         In July 1999, Cabot announced several initiatives focused on improving
shareholder value. These included cost reduction initiatives across its
businesses aimed at reducing annual costs by $30 million to $35 million, plans
for an initial public offering of approximately 15% of MMD, and management's
intention to review the ownership structures of LNG and CPM. Currently, Cabot
expects the MMD initial public offering to occur in the second calendar quarter
of 2000. Management continues to examine various alternatives to optimize the
performance and value in its liquefied natural gas and performance materials
businesses.

         Cabot continues to pursue its strategy of managing costs, and
developing new products and businesses based on its core competencies. Cabot is
also committed to achieving productivity improvements and further refining its
business portfolio in order to achieve its objectives of increasing earnings and
stock price performance.

RESULTS OF OPERATIONS

Cabot's sales for 1999, 1998 and 1997 were $1,695 million, $1,644 million and
$1,625 million, respectively. Higher volumes increased sales 9% in 1999, while
lower selling prices decreased sales by 4%. Negative currency exchange effects
also reduced revenue by 2%. Sales increased $19 million in 1998 due to increased
volumes and greater firm sales commitments in LNG, which more than offset the
effects of lower carbon black selling prices and negative currency effects.

         Cabot has been developing and commercializing new high-value,
differentiated products. Five-year new products (defined as products first sold
in commercial quantities within the last five years) accounted for approximately
13% of revenues, excluding LNG, in 1999.

CHEMICALS GROUP: CARBON BLACK, FUMED SILICA, PLASTICS, INKJET COLORANTS

<TABLE>
<CAPTION>
                                            SEGMENT SALES     SEGMENT PBT
- -------------------------------------------------------------------------
<S>                                         <C>               <C>
DOLLARS IN MILLIONS

   1999                                         $1,204          $ 188
   1998                                          1,279            221
   1997                                          1,326            209
=========================================================================
</TABLE>

Sales for the Chemicals Group were $1,204 million in 1999, compared with $1,279
million in 1998 and $1,326 million in 1997. Lower volumes reduced sales by 1% in
1999. Lower selling prices also reduced sales for the year by 3%, reflecting a
competitive pricing environment in several of Cabot's chemical businesses.
Finally, the negative effects of a stronger U.S. dollar reduced sales by 2%. PBT
decreased 15% to $188 million in 1999 from $221 million in 1998. Lower volumes
and selling prices more than offset the benefit of lower average raw material
costs. In 1998, sales fell 4% and PBT improved 6%. Chemicals Group volume gains
partially offset the effects of lower year-to-year carbon black selling prices
and a stronger U.S. dollar. Increased profitability in the fumed silica and
plastics businesses improved segment results in 1998.

         Carbon black sales were down 6% from last year. Carbon black volumes
were flat and prices were down 6% year-over-year. Carbon black selling prices
decreased due to both dramatic oil


                                                                              21
<PAGE>   2
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS (CONTINUED)


price declines during the first half of the year and a generally weak pricing
environment in certain markets. Oil price declines did, however, improve the
total cost of acquiring feedstock materials in 1999. Feedstock costs were
reduced by 11% compared with 1998. Lower feedstock costs were more than offset
by reduced selling prices, causing a 9% reduction in PBT in 1999.

         Fumed silica sales and PBT were relatively flat compared with the prior
year. Volumes were down 2% caused in part by softened demand in the silicone
rubber market. Selling prices increased 2%, driven by higher sales of treated
products and increased sales of new products.

         Plastics sales declined 6%. Volumes were relatively flat and prices
decreased 6%. Pricing in the plastics industry has come under pressure in recent
years with the addition of industry capacity. Lower carbon black feedstock costs
also put downward pressure on prices. PBT declined 9% for the year, as the
effects of lower raw material costs could not offset a reduction in prices and
increases in conversion costs.

         Inkjet colorants contributed an incremental $6 million to PBT in the
form of reduced losses. Cabot colorants were included in a third inkjet printer
platform and a fourth is expected in the second quarter of 2000.


<TABLE>
<CAPTION>
Sales by segment 1999                    in percent
- ---------------------                    ----------
<S>                                        <C>
Chemicals Group.........................     67
Liquefied Natural Gas...................     15
Performance Materials...................     11
Microelectronics Materials..............      6
Specialty Fluids........................      1
</TABLE>

OUTLOOK FOR 2000

The Chemicals Group expects volume growth in all businesses and price pressure
is expected to moderate in certain markets, however, the overall business
environment will likely remain very competitive in 2000. Recent cost initiatives
are aimed primarily at improving profitability in Cabot's Chemicals Group
businesses.

         The carbon black business expects modest volume growth and continued
pressure on prices. Feedstock costs have increased substantially from mid-1999
lows, which has caused additional margin squeeze. Recent market conditions,
including the consolidation in the tire and auto industries, underscore the need
for continuing cost reduction efforts. Reduced conversion costs and operating
expenses will help offset margin squeeze in 2000.

         Sales volume for fumed silica is expected to grow as a result of the
continued strength of the automotive industry, construction growth and sales of
new products. To meet overall increasing global demand, Cabot completed a fumed
silica plant in Midland, Michigan. The plant began production in November 1999
and has an annual capacity of 16 million pounds.

         Plastics volumes have recently rebounded due to a combination of
increasing polymer prices and new business growth. Variable margins, however,
have suffered due to the inability to fully recover recent carbon black
feedstock and polymer price increases. Selling price increases, which have been
put in effect in the first quarter of 2000, and ongoing cost reductions, should
contribute to an improvement in operating results next year.

         Inkjet colorants should contribute modestly to earnings in 2000.

   PERFORMANCE MATERIALS(1)

<TABLE>
<CAPTION>
                                          SEGMENT SALES     SEGMENT PBT
- -----------------------------------------------------------------------
<S>                                       <C>               <C>
DOLLARS IN MILLIONS

   1999                                       $187             $34
   1998                                        175              25
   1997                                        153              16
=======================================================================
</TABLE>

(1)      Financial information includes distributor sales and equity in net
         income of joint ventures.

Performance Materials sales were $187 million in 1999, compared with $175
million in 1998 and $153 million in 1997. Volumes increased 4% in 1999 due to
increased demand for tantalum capacitors by wireless communication companies,
coupled with a resurgence of the personal computer market. Volumes also
increased due to higher sales of Cabot's intermediate products. Improved prices
increased revenue by 3%. Improvements in volumes, prices, conversion, and
operating expenses offset increases in tantalum ore costs, resulting in a 36%
improvement in profitability. In 1998, improved financial performance was
largely the result of improved volumes, offset by increased new product
development spending.

OUTLOOK FOR 2000

The strength in the electronics industry is expected to contribute to improved
tantalum powder volumes in 2000. Higher capacitance powders produced by this
segment are currently sold out and on allocations with customers. Increases in
average selling prices are also anticipated due to a richer product mix.
However, lower contractual volumes for CPM's intermediate products are expected
to negatively impact financial results in 2000.


22
<PAGE>   3
SPECIALTY FLUIDS

<TABLE>
<CAPTION>
                                          SEGMENT SALES     SEGMENT PBT
- -----------------------------------------------------------------------
<S>                                       <C>               <C>
DOLLARS IN MILLIONS

   1999                                       $ 12              $(3)
   1998                                         13               (2)
   1997                                         11               (4)
=======================================================================
</TABLE>

Specialty Fluids sales in 1999 were $12 million, versus $13 million in 1998 and
$11 million in 1997. Although this business is primarily focused on
commercializing cesium formate oilfield fluids, sales to date have been
generated primarily from the production and sales of spodumene and tantalum.
Customer trials of cesium formate drilling and completion fluids by the oil and
gas industry were inhibited in 1999 by an oil industry downturn. During 1999,
Cabot temporarily suspended production at the cesium formate plant due to an
inventory overload of cesium formate. Management expects production will resume
as cesium formate gains market acceptance.

<TABLE>
<CAPTION>
Sales by geographic region 1999         in percent
- -------------------------------         ----------
<S>                                        <C>
North America.........................      51
Europe................................      35
South America.........................      10
Asia Pacific..........................       4
</TABLE>

OUTLOOK FOR 2000

CSF continues to aggressively market cesium formate drilling fluids. Success in
this segment will be driven by market acceptance from the oil and gas drilling
sectors, which are gradually recovering from the industry downturn and are
expected to continue to recover over the next 12 months. Cesium formate was used
successfully in three North Sea completion operations. Each completion operation
was performed for a different major oil company. As fiscal 2000 progresses, CSF
expects to demonstrate that cesium brine fluids can provide value in a wider
variety of applications in the oil drilling business.

MICROELECTRONICS MATERIALS

<TABLE>
<CAPTION>
                                          SEGMENT SALES     SEGMENT PBT
- -----------------------------------------------------------------------
<S>                                       <C>               <C>
DOLLARS IN MILLIONS

   1999                                       $ 96             $ 22
   1998                                         57                9
   1997                                         34                1
=======================================================================
</TABLE>

Microelectronics Materials sales were $96 million in 1999, compared with $57
million in 1998 and $34 million in 1997. The segment experienced strong volume
gains of 53% and average price increases of 14%. The substantial volumes growth
in 1999 resulted from the introduction of new products and strength in MMD's
existing product portfolio. Increased adoption of chemical mechanical
planarization in the semiconductor industry has driven the growth of this
business over the last three years. MMD completed a new facility in Geino,
Japan, during the year to provide additional capacity to keep pace with growing
demand. In 1998, volumes grew 61%.

         PBT increased to $22 million in 1999, primarily due to improved volumes
and increased adoption of higher value new products, offset somewhat by
increased selling, technical, and administrative expenses. PBT was $9 million in
1998, up from $1 million in 1997 due to increased volumes and improved plant
utilization, offset somewhat by higher spending on research and development and
market development initiatives.

OUTLOOK FOR 2000

MMD's performance is expected to improve in 2000, with higher average prices and
volume growth anticipated from new product sales. In 1999, MMD introduced its
new LUSTRATM polishing slurry for the rigid disk market and EPICTM polishing
pads. Sales of rigid disk slurries have been better than anticipated and are
expected to contribute significantly to MMD's financial performance in 2000.
Significant investment spending will continue, including plans to expand North
American manufacturing and to purchase land in Korea for a new facility.

LIQUEFIED NATURAL GAS

<TABLE>
<CAPTION>
                                          SEGMENT SALES     SEGMENT PBT
- -----------------------------------------------------------------------
<S>                                       <C>               <C>
DOLLARS IN MILLIONS

   1999                                       $ 265           $ 7
   1998                                         211            15
   1997                                         200             7
=======================================================================
</TABLE>

Sales for LNG were $265 million in 1999, compared with $211 million in 1998 and
$200 million in 1997. LNG volumes increased 46% in 1999. Commencement of LNG
shipments from Trinidad, which began during the third quarter, allowed Cabot to
increase volumes in 1999. LNG supplied the New England gas market with 88
million British Thermal Units ("BTU"s) in 1999 versus 60 million BTUs in 1998.
However, lower natural gas selling prices caused by warmer than normal weather
reduced revenues for the year by 20%.

         PBT was $7 million in 1999 versus $15 million in 1998. Lower natural
gas selling prices offset the earnings effect of improved volumes and gas costs.
The increase in earnings in 1998 was primarily due to a more ample and assured
supply of LNG than in previous years, which enabled management to contract firm
sales commitments for a greater amount of LNG during the winter season.


                                                                              23
<PAGE>   4
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS (CONTINUED)


OUTLOOK FOR 2000

Improved performance in LNG is expected in 2000 due to availability of natural
gas from Trinidad and higher gas selling prices. Cabot has sold forward a
significant portion of its expected cargoes in 2000 and, therefore, anticipates
that LNG will generate about $20 million in PBT.

COMPANY SUMMARY

INCOME BEFORE INCOME TAXES, INCOME TAXES, AND EQUITY IN NET INCOME OF AFFILIATED
COMPANIES

Income before income taxes was $136 million in 1999, down 19% from $168 million
in 1998 and up 16% from $117 million in 1997. Earnings for 1999 were
significantly reduced by several charges related to capacity utilization and
cost reduction initiatives. The cost reduction initiatives included $16 million
for severance and termination benefits for approximately 265 employees, of which
$7 million was paid in 1999, and a charge of $10 million for the retirement of
certain long-lived plant assets, primarily at the Australian carbon black
facility and European plastics masterbatch operations. Cabot expects the
initiatives to be substantially completed by the end of fiscal year 2000.

OPERATING EXPENSES*

DOLLARS IN MILLIONS

<TABLE>
<CAPTION>
1997            1998             1999
- ----            ----             ----
<S>             <C>              <C>
284             296              281

* Includes research and technical, and selling and administrative expenses.
</TABLE>

         Gross margin decreased $30 million versus 1998, as significant declines
in carbon black and LNG selling prices offset lower carbon black feedstock costs
and volume improvements. In 1998 gross margin increased $39 million primarily
due to improved volumes, higher LNG selling prices and lower carbon black
feedstock costs, which offset the effects of lower year-over-year carbon black
selling prices and unfavorable currency exchange rates.

         Operating expenses include research and technical service, and selling
and administrative expenses. Research and technical service spending was $73
million for 1999, down 9% from $80 million in 1998. The decrease reflected
reduced spending in the carbon black and CPM businesses, which was somewhat
offset by increased spending in MMD and fumed silica new product development
programs. Cabot is committed to the development of new differentiated products
for its businesses. Cabot anticipates research and technical service spending to
remain near $65 million in 2000 for these and other initiatives. Selling and
administrative expenses were $208 million in 1999 versus $216 million in 1998.
The decrease in 1999 reflects cost improvement efforts across Cabot's
businesses.

         Interest expense was $46 million in 1999 compared with $42 million in
1998 and $43 million in 1997.

         Other charges, net, decreased from $15 million in 1998 to $7 million in
1999. The decrease was primarily due to nonrecurring costs related to a divested
business in 1998 and a reduction in foreign currency exchange losses. Results in
1998 included the effects of a significant devaluation of the Indonesian rupiah.

         Cabot's overall effective income tax rate was 36% in 1999, 1998 and
1997. The underlying factors affecting Cabot's overall effective tax rates are
summarized in Note M of the consolidated financial statements.

         Cabot's share of the earnings of investments in equity affiliates was
$13 million in 1999 compared with $17 million in 1998 and $20 million in 1997.

NET INCOME

Net income in 1999 was $97 million ($1.31 per diluted common share) compared to
$122 million ($1.61 per diluted common share) in 1998 and $93 million ($1.19 per
diluted common share) in 1997.

         The following table summarizes the impact of special items on diluted
earnings per common share:

<TABLE>
<CAPTION>
                                                 1999       1998       1997
- ---------------------------------------------------------------------------
<S>                                             <C>        <C>        <C>
SPECIAL ITEMS
Sale of K N Energy, Inc. stock                  $ 0.09     $ 0.77        --
Carbon black asset impairment                    --         (0.51)       --
Tantalum ore recovery charge                     --         (0.21)       --
Cost reduction initiatives/programs              (0.23)     --        $(0.15)
- ----------------------------------------------------------------------------
Earnings per common
  share - diluted                               $(0.14)    $ 0.05     $(0.15)
============================================================================
</TABLE>

Excluding special items, net income would have been $107 million in 1999, $118
million in 1998 and $104 million in 1997. For a more detailed discussion of
special items, refer to Note B of the consolidated financial statements.


24
<PAGE>   5
RISK MANAGEMENT

Cabot's objective in managing its exposure to interest rate changes, foreign
currency rate changes, and commodity price changes is to limit the impact of the
changes on earnings. To achieve its objectives, Cabot identifies these risks and
manages them through its regular operating and financing activities and, when
deemed appropriate, through the use of derivative financial instruments. The
Chemicals Group enters into contracts with customers and suppliers that are
designed to limit the risk of certain foreign currency rate and commodity price
changes. Cabot enters into certain contracts in the carbon black business in
which the price of the product is adjusted based on certain price movements in
feedstock. LNG enters into certain supply contracts where the purchase price of
LNG is adjusted based on the final selling price. Certain contracts in Cabot's
foreign subsidiaries are denominated in U.S. dollars or a currency other than
the functional currency of the subsidiary. Additionally, Cabot attempts to limit
its net monetary exposure in currencies of hyper-inflationary countries,
primarily in South America.

         Cabot determines its worldwide exposures to interest rate changes,
foreign currency rate changes, and commodity price changes and reduces the
impact of rate and price changes through the use of derivative financial
instruments. These financial instruments are designated as hedges of underlying
exposures associated with specific assets, liabilities, or firm commitments or
anticipated transactions and are monitored to determine if they remain effective
hedges. Market risk exposure to other financial instruments is not material to
earnings, cash flow, or fair values.

         Cabot manages market risks pursuant to policies aimed at protecting
Cabot against risks and prohibiting speculation on market movements. Actions
taken by Cabot's businesses to provide such protection are reviewed and approved
by Cabot's Risk Management Committee, which is charged with enforcing Cabot's
risk management policy.

Interest Rates

Cabot's objective in managing its exposure to interest rate changes is to reduce
the impact of interest rate changes on earnings and cash flows and to lower its
overall borrowing costs. To achieve its objectives, Cabot uses interest rate
swaps to hedge and/or lower financing costs and to adjust fixed and variable
rate debt positions. Cabot maintains a percentage of fixed and variable rate
debt within defined parameters.

Foreign Currency

Cabot's international operations are subject to certain opportunities and risks,
including currency fluctuations and government actions. Operations in each
country are closely monitored so Cabot can respond to changing economic and
political environments and to fluctuations in foreign currencies. Accordingly,
Cabot utilizes foreign currency option contracts and forward contracts to hedge
its exposure of firm commitments or anticipated transactions, and receivables
and payables primarily denominated in currencies other than the functional
currencies. Cabot also monitors its foreign exchange exposures to ensure the
overall effectiveness of its foreign currency hedge positions. Cabot has foreign
currency instruments primarily denominated in the EURO, Japanese yen, British
pound sterling, Swedish krona, Canadian dollar, and Australian dollar.

Commodities

Cabot is exposed to commodity price fluctuations that can affect its sales
revenues and supply costs. From time to time, Cabot enters into commodity
futures contracts, commodity price swaps, and/or option contracts to hedge a
portion of firmly committed and anticipated transactions against such natural
gas price fluctuations. Cabot monitors its exposure to ensure overall
effectiveness of its hedge positions.

Value-At-Risk

Cabot utilizes a Value-at-Risk ("VAR") model to determine the maximum potential
loss in the fair value of its interest rate, foreign exchange, and commodity
sensitive derivative financial instruments within a 95% confidence interval.
(See Note P of the consolidated financial statements for risk management.)
Cabot's computation was based on the interrelationships between movements in
interest rates, foreign currencies, and commodities. These interrelationships
were determined by observing historical interest rate, foreign currency, and
commodity market changes over corresponding periods. The assets and liabilities,
firm commitments and anticipated transactions, which are hedged by derivative
financial instruments, were excluded from the model. The VAR model estimates
were made assuming normal market conditions and a 95% confidence level. There
are various modeling techniques that can be used in the


                                                                              25
<PAGE>   6
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS (CONTINUED)


VAR computation. Cabot's computations are based on the Monte Carlo simulation.
The VAR model is a risk analysis tool and does not purport to represent actual
gains or losses in fair value that will be incurred by Cabot. The VAR model
estimated a maximum loss in market value of $20 million from October 1, 1999,
through September 30, 2000, for derivative instruments held as of September 30,
1999.

         At no time during the year did actual changes in market value exceed
the VAR amounts during the reporting period.

         In 1998, Cabot was unable to aggregate its derivative financial
instruments for the VAR model. Cabot's VAR models estimated a maximum loss in
market value for each type of derivative instrument held as of September 30,
1998. The results of the VAR models were as follows:

<TABLE>
<CAPTION>
                                    MAXIMUM LOSS           PERIOD
                                    ------------           ------
<S>                                 <C>                <C>
   Foreign currency                 $ 0.4 million       two weeks
   Interest rate                    $12.0 million      six months
   Commodity                        $ 1.0 million       one month
</TABLE>

         Management does not foresee or expect any significant changes in the
management of hedging instruments relating to interest rate, foreign currency,
or commodity exposures or in the strategies it employs to manage such exposures
in the near future.

         Since Cabot utilizes interest rate, foreign currency, and commodity
sensitive derivative instruments for hedging, a loss in fair value for those
instruments is generally offset by increases in the value of the underlying
transaction.

EURO CONVERSION

On January 1, 1999, certain members of the European Union established fixed
conversion rates between their existing currencies and the EURO. The transition
period is anticipated to extend between January 1, 1999, and July 1, 2002. Cabot
has assessed the impact of the conversion on information technology systems,
currency exchange rate risk, derivatives and other financial instruments,
continuity of material contracts, as well as income tax and accounting issues.
Cabot does not expect the conversion during the transition period to have a
material impact on Cabot's consolidated financial statements.

CASH FLOW AND LIQUIDITY

Cash generated in 1999 from operating activities was $208 million, compared with
$237 million in 1998 and $144 million in 1997 (see the consolidated statements
of cash flows). The change in 1999 is primarily due to an increase in working
capital. The change in working capital was primarily due to the consolidation of
the company's Shanghai carbon black joint venture and increased business
activity at Cabot LNG in the fourth quarter this year compared with the fourth
quarter last year.

         Capital spending on property, plant and equipment, and investments and
acquisitions for 1999, 1998 and 1997 was $172 million, $247 million and $181
million, respectively. The major components of the 1999 and 1998 capital program
included new business expansion and normal plant operating capital projects,
Cabot's equity share of a natural gas liquefaction project in Trinidad,
refurbishment of Cabot's LNG tanker, and capacity expansion in Cabot's fumed
silica and MMD businesses.

         Capital expenditures for 2000 are expected to approximate $150 million
and include projects for maintenance and replacement, and MMD plant expansion.
Although Cabot expects to continue to invest in new business opportunities, this
represents a decrease in the rate of capital spending from 1999.

         During the next several years, Cabot also expects to spend a
significant portion of its $39 million environmental reserve in connection with
remediation at various environmental sites. These sites are primarily associated
with divested businesses.

<TABLE>
<CAPTION>
Capital expenditures 1999              in percent
- -------------------------              ----------
<S>                                      <C>
process improvement..................      35
maintenance improvement..............      25
new business expansion...............      20
compliance...........................      10
infrastructure.......................      10
</TABLE>


         In 1999, Cabot sold 1 million shares of K N Energy, Inc. ("KNE") and
recognized a $10 million gain from the sale of those equity securities. In 1998,
Cabot sold 2 million shares of KNE and recognized a $90 million gain from the
sale of those equity securities.

         Cash used in 1999 in financing activities was $69 million, compared
with $131 million in 1998 and $15 million in 1997.

         On September 11, 1998, Cabot's Board of Directors authorized the
repurchase of 4 million shares of Cabot's common stock. As of September 30,
1999, approximately 2 million shares remained available for purchase under the
Board authorization.

         During 1999, Cabot repurchased 1.6 million shares of its common stock
for $39 million. During 1998, 3.8 million shares were repurchased for $101
million. During 1997, 3.5 million shares were repurchased for $85 million. Cabot
has predominately used the proceeds of asset sales to finance share repurchases
over the last three years.

         On June 30, 1999, Cabot purchased from a financial institution, loans
to Cabot employees totaling $18 million in connection with the purchase of
restricted shares of Cabot Corporation common stock, awarded under the Company's
1996 Equity Incentive Plan.


26
<PAGE>   7
         During 1999, Cabot paid cash dividends of $0.44 per share. In November
1999, the Board of Directors approved an $0.11 per share dividend payable in the
first calendar quarter of 2000.

         Cabot's ratio of total debt (including short-term debt, net of cash) to
capital increased from 43% at September 30, 1998, to 44% at September 30, 1999.

         On September 29, 1998, Cabot filed a shelf registration statement with
the Securities and Exchange Commission ("SEC") for up to $500 million of debt
securities that may be issued from time to time. The SEC declared the
registration statement effective on October 13, 1998.

         In December 1998, Cabot issued $100 million of medium-term notes. As of
September 30, 1999, the notes mature as follows: $40 million in one year, $30
million in six years, and $30 million in 19 years. The notes have a
weighted-average interest rate of 6.6%. Proceeds from the issuance were used to
reduce short-term debt.

         Cabot maintains a credit agreement under which it may borrow up to $300
million at floating rates. The facility is available through January 3, 2002.
Cabot had no borrowings outstanding under this agreement at September 30, 1999.
Management expects cash from operations and present financing arrangements,
including Cabot's unused line of credit and shelf registration, to be sufficient
to meet cash requirements for the foreseeable future.

                            SOURCES AND USES OF CASH

IN MILLIONS OF DOLLARS
<TABLE>
<CAPTION>
                                        SOURCES OF CASH       USES OF CASH
                                        1998       1999      1998      1999
                                        ----       ----      ----      ----
<S>                                     <C>        <C>       <C>       <C>
Other                                      6          8
Sales of assets                          136         21
Borrowings                               116        103
Operations                               237        208

Other                                                                    18
Share repurchases, net                                         81        35
Dividends                                                      32        32
Debt repayment                                                134        88
Capital expenditures and investments                          247       172
</TABLE>

YEAR 2000 READINESS DISCLOSURE

Cabot's Year 2000 plan has three key areas of focus and is overseen by the
Executive Steering Committee. Cabot's Program Management Office was established
to coordinate Year 2000 efforts with regional teams in Asia Pacific, Europe,
North America, and South America. These teams have been in place and working for
more than a year. Cabot's Year 2000 efforts have progressed on schedule.

         The first key area of focus was Cabot's core business systems software,
PC hardware and desktop software, and manufacturing plant devices and software.
Cabot's plan with respect to this area includes the inventory of all core
business systems software, PC hardware and desktop software, and plant devices
and software that have clocking devices or computer codes that will be impacted
by the change of date to Year 2000; assessment for priority as to mission
critical systems; upgrading or replacing such hardware and software as required;
testing and placing into an operational state; and developing contingency plans.
The current status and plans for each component of this area are as follows:

         Core Business Systems: This component includes all software and
hardware systems that record relevant data for business operations and summarize
revenue, cost, cash flows, capital, and other information. Cabot completed the
inventory, assessment, remediation, and testing of core business systems, with
two exceptions as detailed below.

         Global business systems renewal projects have been completed. These
projects included the rollout of AspenTech's manufacturing production support
systems, the migration of Cabot's Asia Pacific and European facilities to the
JDEdwards and Marcam suites of business software, and the upgrade to PeopleSoft
Human Resources globally. A small amount of data conversion and acceptance
testing will be completed in December 1999 for laboratory information management
systems in Asia Pacific and South America, and for a shop floor bar coding
system in one North American facility.

         PC Hardware and Desktop Software: Cabot has completed the inventory,
assessment, remediation and testing phases for its PC hardware, including
replacement or repair of desktop hardware and mission critical software.

         Manufacturing Plant Devices and Software: Cabot completed the inventory
and assessments of plant embedded devices and software during the second quarter
of 1999. Replacement or repair of plant devices and software, and final testing
in all manufacturing facilities was substantially completed by September 30,
1999.

         Contingency plans for this key area have been developed and will be
reviewed and revised up through the change to the millennium.

         The second key area of focus was Cabot's supply chain. This included
identifying key suppliers whose supply disruption could have an adverse impact
on Cabot's ability to produce and ship product; working with these suppliers to
decrease the chances supply will be disrupted; identifying alternative sources
or contingency plans as needed; and attempting to obtain writ-


                                                                              27
<PAGE>   8
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS (CONTINUED)


ten assurances that purchased products and services are Year 2000 ready. Even in
cases where Cabot has received assurances that delays or disruptions will not be
encountered by third parties, Cabot is not in a position to determine with
certainty whether the assurances will prove accurate, given the uncertainties
associated with the Year 2000 issue. The current status and plans for this area
are as follows:

         Key suppliers were identified. Letters and questionnaires were sent to
those suppliers and a review of their responses was completed in the third
quarter of 1999. Contingency plans for this key area have been developed.

         The final key area of focus was internal and external communications,
and included ongoing status reporting to management, coordinated responses to
external customer requests for information on Cabot's Year 2000 status, and
timely delivery of information on Year 2000 to Cabot employees worldwide. The
current status and plans for this area are as follows:

         An internal status reporting mechanism is in place. Coordinated
responses are being delivered to key customers. An employee awareness program
has continued throughout 1999.

         Overall, Cabot met its established Year 2000 program goals:

         -        To complete activities related to mission critical core
                  business systems, PC hardware, and desktop software by June
                  30, 1999.

         -        To substantially complete activities related to manufacturing
                  embedded devices, manufacturing control systems, and supplier
                  readiness by September 30, 1999, and

         -        To substantially complete contingency plans by September 30,
                  1999.

         During the final three months of 1999, Cabot focused on Year 2000 by
refining contingency plans as needed; reviewing and amending Year 2000
documentation as needed; and performing ongoing reviews of supplier readiness.

         The cost of implementing system and program changes necessary to
address Year 2000 issues did not have a material effect on Cabot's results of
operations or financial condition. Cabot has identified Year 2000 expenses as
costs incurred specifically to modify hardware or software to be Year 2000
compliant where such modifications do not add other functionality. The vast
majority of Cabot's projects over the last year were considered to be part of
Cabot's ongoing global business systems renewal initiatives. Cabot recognizes
that a benefit of these initiatives was Year 2000 compliance. However, these
initiatives were not undertaken primarily for Year 2000 compliance and,
therefore, were not treated as Year 2000 costs. The Year 2000 compliance effort
was supported by a reallocation of existing information technology and human
resources. Cabot does not specifically track all costs associated with employees
working on Year 2000 projects. Cabot budgeted and spent approximately $2 million
during 1999 on direct Year 2000 remediation efforts, in addition to the global
business system renewal efforts. There can be no assurance that there will not
be increased costs associated with the implementation of such changes.

         The above plans and status represent Cabot's expectations based on
current Year 2000 plans and work progress, however, there is no assurance that
such expectations will be realized. While Cabot believes that prudent steps have
been taken to assure that there is an effective program, Cabot cannot guarantee
that the plans and funds expended will correct all Year 2000 errors or that the
information systems will not generate Year 2000 errors when operating with third
party computer systems or data.

         Cabot cannot reliably predict the source, nature, or extent of any Year
2000 disruptions that may be experienced in the U.S. or other countries where it
operates and, therefore, cannot predict reliably the effect any such disruptions
may have on Cabot, its operations or financial condition. Cabot does not know
what is the most likely "worse case scenario" as a result of Year 2000
disruptions, but believes that the effects on Cabot are not substantially
different from those facing industry generally. Cabot believes that the most
likely causes of disruption are one or more of the following: disruptions in the
banking system, disruptions in the supply of electricity to Cabot's plants that
could delay production of Cabot's products, and disruptions in transporta-


28
<PAGE>   9
tion services that could delay shipments from Cabot's suppliers or to Cabot's
customers. In addition, Cabot does not know whether any of its customers will
experience Year 2000 disruptions, either directly or as a result of disruptions
in their customers' or other suppliers' businesses or in the economy generally,
but any such disruptions might reduce demand for Cabot's products and adversely
affect Cabot. Cabot believes that if none of the third parties with which it
deals, directly or indirectly, experience disruptions or delays related to the
Year 2000 problem, it will be able to continue to operate with little or no
disruption or delay.

NEW ACCOUNTING STANDARDS

In June 1998, the Financial Accounting Standards Board ("FASB") issued Statement
of Financial Accounting Standards No. 133, "Accounting for Derivative
Instruments and Hedging Activities" ("SFAS No. 133"). Among other provisions, it
requires that entities recognize all derivatives as either assets or liabilities
in the statement of financial position and measure those instruments at fair
value. Gains and losses resulting from changes in the fair values of those
derivatives would be accounted for depending on the use of the derivative and
whether it qualifies for hedge accounting. SFAS No. 133 is effective for all
fiscal quarters of fiscal years beginning after June 15, 2000. Cabot is
currently evaluating the effect of implementing SFAS No. 133.

In March 1998, the Accounting Standards Executive Committee ("AcSEC") issued
Statement of Position 98-1, "Accounting for the Costs of Computer Software
Developed or Obtained for Internal Use" ("SOP 98-1"), which is effective for
fiscal years beginning after December 15, 1998. This standard requires
capitalization of certain internal-use computer software costs. Cabot engages in
ongoing update, enhancement, and replacement of its computer systems. Currently,
Cabot capitalizes significant external costs associated with services and
software incurred in connection with these activities. To date, internal
resources associated with these activities have not been significant,
therefore, adoption of this standard on October 1, 1999, is not expected to have
a material impact on Cabot's consolidated financial statements.

         In April 1998, AcSEC issued Statement of Position 98-5, "Accounting for
the Costs of Start-Up Activities" ("SOP 98-5"), which is effective for fiscal
years beginning after December 15, 1998. SOP 98-5 provides guidance on the
financial reporting of start-up costs and organization costs, requiring those
costs to be expensed as incurred. Adoption of this standard on October 1, 1999,
is not expected to have a material impact on Cabot's consolidated financial
statements.

FORWARD-LOOKING INFORMATION

Included herein are statements relating to management's projections of future
profits, the possible achievement of Cabot's financial goals and objectives,
management's expectations for Cabot's product development program, Year 2000
risks, and the impact of the EURO conversion. Actual results may differ
materially from the results anticipated in the statements included herein due to
a variety of factors, including market supply and demand conditions,
fluctuations in currency exchange rates, cost of raw materials, patent rights of
others, Year 2000 disruptions, demand for Cabot's customers' products, and
competitors' reactions to market conditions. Timely commercialization of
products under development by Cabot 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. The
risk management discussion and the estimated amounts generated from the analyses
are forward-looking statements of market risk, assuming certain adverse market
conditions occur. Actual results in the future may differ materially from these
projected results due to actual developments in the global financial markets.
The methods used by Cabot to assess and mitigate risks should not be considered
projections of future events or losses.


                                                                              29
<PAGE>   10

CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------------
  SEPTEMBER 30                                                                               1999        1998
- -----------------------------------------------------------------------------------------------------------------
  DOLLARS IN MILLIONS
<S>                                                                                       <C>             <C>
  ASSETS
  Current assets:
    Cash and cash equivalents                                                             $    35         $    40
    Accounts and notes receivable, net of reserve for doubtful accounts of $5 and $5          321             284
    Inventories (Note C)                                                                      259             251
    Prepaid expenses and other current assets                                                  27              26
    Deferred income taxes (Note M)                                                             17              18
- -----------------------------------------------------------------------------------------------------------------
     Total current assets                                                                     659             619
- -----------------------------------------------------------------------------------------------------------------



  Investments:
    Equity (Notes B and D)                                                                     72              91
    Other (Notes D and N)                                                                      47              72
- -----------------------------------------------------------------------------------------------------------------
     Total investments                                                                        119             163
- -----------------------------------------------------------------------------------------------------------------

  Property, plant and equipment (Note E)                                                    2,039           1,914
  Accumulated depreciation and amortization                                                (1,015)           (936)
- -----------------------------------------------------------------------------------------------------------------
     Net property, plant and equipment                                                      1,024             978
- -----------------------------------------------------------------------------------------------------------------


  Other assets:
    Intangible assets, net of accumulated amortization of $16 and $11 (Note B)                 20              24
    Deferred income taxes (Note M)                                                              6               4
    Other assets                                                                               14              17
- -----------------------------------------------------------------------------------------------------------------
     Total other assets                                                                        40              45
- -----------------------------------------------------------------------------------------------------------------




  Total assets                                                                            $ 1,842         $ 1,805
=================================================================================================================
</TABLE>

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

30
<PAGE>   11
CONSOLIDATED BALANCE SHEETS



<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------
  SEPTEMBER 30                                                                 1999           1998
- ---------------------------------------------------------------------------------------------------
  DOLLARS IN MILLIONS

<S>                                                                          <C>            <C>
  LIABILITIES AND STOCKHOLDERS' EQUITY


  Current liabilities:
    Notes payable to banks                                                   $   186        $   253
    Current portion of long-term debt (Note G)                                    11             11
    Accounts payable and accrued liabilities (Notes F and H)                     252            269
    Deferred income taxes (Note M)                                                 1              3
- ---------------------------------------------------------------------------------------------------
     Total current liabilities                                                   450            536
- ---------------------------------------------------------------------------------------------------

  Long-term debt (Note G)                                                        419            316
  Deferred income taxes (Note M)                                                  68             82
  Other liabilities (Notes H, J, and O)                                          167            140

  Commitments and contingencies (Note O)

  Minority interest                                                               32             25

  Stockholders' equity (Notes D, G, J, and K):
  Preferred stock:
    Authorized:  2,000,000 shares of $1 par value
     Series A Junior Participating Preferred Stock
      Issued and outstanding: none
     Series B ESOP Convertible Preferred Stock 7.75% Cumulative
      Issued:  75,336 shares (aggregate redemption value of $65 and $67)          75             75
  Less cost of shares of preferred treasury stock                                (17)           (14)
  Common stock:
    Authorized: 200,000,000 shares of $1 par value
      Issued and outstanding: 67,123,892 and 67,241,624 shares                    67             67
  Additional paid-in capital                                                       5              5
  Retained earnings                                                              734            672
  Unearned compensation                                                          (30)           (26)
  Deferred employee benefits                                                     (59)           (60)
  Notes receivable for restricted stock                                          (25)            --
  Accumulated other comprehensive loss                                           (44)           (13)
- ---------------------------------------------------------------------------------------------------
     Total stockholders' equity                                                  706            706
- ---------------------------------------------------------------------------------------------------
  Total liabilities and stockholders' equity                                 $ 1,842        $ 1,805
===================================================================================================
</TABLE>

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

                                                                              31
<PAGE>   12
CONSOLIDATED STATEMENTS OF INCOME



<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------
  YEARS ENDED SEPTEMBER 30                                                       1999           1998          1997
- --------------------------------------------------------------------------------------------------------------------
  DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS
<S>                                                                            <C>            <C>            <C>
  Revenues:
    Net sales and other operating revenues                                     $ 1,695        $ 1,644        $ 1,625
    Interest and dividend income (Notes D and P)                                     4              5              7
- --------------------------------------------------------------------------------------------------------------------
     Total revenues                                                              1,699          1,649          1,632
====================================================================================================================

  Costs and expenses:
    Cost of sales                                                                1,213          1,133          1,155
    Selling and administrative expenses                                            208            216            204
    Research and technical service                                                  73             80             80
    Interest expense (Notes G and P)                                                46             42             43
    Special items (Note B)                                                          26             85             18
    Gain on sale of equity securities (Note D)                                     (10)           (90)            --
    Other charges, net                                                               7             15             15
- --------------------------------------------------------------------------------------------------------------------
     Total costs and expenses                                                    1,563          1,481          1,515
====================================================================================================================

  Income before income taxes                                                       136            168            117
  Provision for income taxes (Note M)                                              (49)           (60)           (42)
  Equity in net income of affiliated companies (Note D)                             13             17             20
  Minority interest in net income                                                   (3)            (3)            (2)
- --------------------------------------------------------------------------------------------------------------------
     Net Income                                                                     97            122             93
====================================================================================================================

  Dividends on preferred stock, net of tax benefit of $2, $2, and $2                (3)            (4)            (3)
- --------------------------------------------------------------------------------------------------------------------
     Income applicable to common shares                                        $    94        $   118        $    90
====================================================================================================================

  Weighted-average common shares outstanding, in millions (Notes K and L):
    Basic                                                                           64             66             68
    Diluted                                                                         73             75             77

  Income per common share (Note L):
    Basic                                                                      $  1.47        $  1.80        $  1.33
    Diluted                                                                    $  1.31        $  1.61        $  1.19
====================================================================================================================
</TABLE>

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

32
<PAGE>   13
CONSOLIDATED STATEMENTS OF CASH FLOWS



<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------
  YEARS ENDED SEPTEMBER 30                                                            1999          1998         1997
- ---------------------------------------------------------------------------------------------------------------------
  DOLLARS IN MILLIONS
<S>                                                                                   <C>          <C>          <C>
  CASH FLOWS FROM OPERATING ACTIVITIES
    Net income                                                                        $  97        $ 122        $  93
    Adjustments to reconcile net income to cash provided by operating activities:
     Depreciation and amortization                                                      125          115          110
     Deferred tax expense (benefit)                                                      (3)          12          (13)
     Equity in net income of affiliated companies, net of dividends received              6          (10)          (9)
     Special items                                                                       19           60           18
     Gain on sale of equity securities                                                  (10)         (90)          --
     Other, net                                                                          15           12            8
     Changes in assets and liabilities, net of the effect
      of the consolidation of equity affiliates:
       Decrease (increase) in accounts and notes receivable                             (38)           8          (29)
       Decrease (increase) in inventories                                                (7)          (3)           3
       Increase (decrease) in accounts payable and accrued liabilities                   (2)          31          (23)
       Decrease in income taxes payable                                                 (14)          (2)         (24)
       Increase (decrease) in other liabilities                                          29           (8)          (1)
       Other, net                                                                        (9)         (10)          11
- ---------------------------------------------------------------------------------------------------------------------
  Cash provided by operating activities                                                 208          237          144
=====================================================================================================================

  CASH FLOWS FROM INVESTING ACTIVITIES
    Additions to property, plant and equipment                                         (166)        (188)        (163)
    Proceeds from sales of property, plant and equipment                                  1            6            1
    Purchases of equity securities                                                       --          (20)         (11)
    Proceeds from sales of equity securities                                             20          130           --
    Investments and acquisitions, excluding cash acquired                                (6)         (39)          (7)
    Proceeds from sale of business                                                       --           --           35
    Cash from consolidation of equity affiliates and other                                8            2           --
- ---------------------------------------------------------------------------------------------------------------------
  Cash used in investing activities                                                    (143)        (109)        (145)
=====================================================================================================================

  CASH FLOWS FROM FINANCING ACTIVITIES
    Proceeds from long-term debt                                                        103           63           90
    Repayments of long-term debt                                                        (11)        (134)         (21)
    Increase (decrease) in short-term debt, net                                         (77)          53           17
    Purchases of preferred and common stock                                             (46)        (106)         (87)
    Sales and issuances of preferred and common stock                                    11           25           18
    Cash dividends paid to stockholders                                                 (32)         (32)         (32)
    Purchase of notes receivable for restricted stock, net of repayments received       (17)          --           --
- ---------------------------------------------------------------------------------------------------------------------
  Cash used in financing activities                                                     (69)        (131)         (15)
=====================================================================================================================

  Effect of exchange rate changes on cash                                                (1)           4           (3)
- ---------------------------------------------------------------------------------------------------------------------
  Increase (decrease) in cash and cash equivalents                                       (5)           1          (19)
  Cash and cash equivalents at beginning of year                                         40           39           58
- ---------------------------------------------------------------------------------------------------------------------
  Cash and cash equivalents at end of year                                            $  35        $  40        $  39
=====================================================================================================================
</TABLE>

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

                                                                              33
<PAGE>   14
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY



<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
                                                                                          PREFERRED
                                                                                      STOCK, NET OF                         COMMON
  YEARS ENDED SEPTEMBER 30                                                           TREASURY STOCK   COMMON STOCK  TREASURY STOCK
- ----------------------------------------------------------------------------------------------------------------------------------
  DOLLARS IN MILLIONS
<S>                                                                                  <C>              <C>           <C>
  1997
  Balance at October 1, 1996                                                                   $ 67           $136          $(634)
==================================================================================================================================
  Net income
  Foreign currency translation adjustments
  Change in unrealized gain on available-for-sale securities
- ----------------------------------------------------------------------------------------------------------------------------------
  Total comprehensive income
- ----------------------------------------------------------------------------------------------------------------------------------
  Common dividends paid
  Issuance of stock under employee compensation plans, net of tax benefit of $4                                                12
  Issuance of common stock to CRISP                                                                                             2
  Purchase and retirement of common stock                                                                                     (85)
  Purchase of treasury stock-preferred                                                           (2)
  Preferred dividends paid to Employee Stock Ownership Plan, net of tax
  Principal payment by Employee Stock Ownership Plan under guaranteed loan
  Amortization of unearned compensation
==================================================================================================================================
  Balance at September 30, 1997                                                                $ 65           $136          $(705)
==================================================================================================================================
  1998
  Net income
  Foreign currency translation adjustments
  Change in unrealized gain on available-for-sale securities
- ----------------------------------------------------------------------------------------------------------------------------------
  Total comprehensive income
- ----------------------------------------------------------------------------------------------------------------------------------
  Common dividends paid
  Issuance of stock under employee compensation plans, net of tax benefit of $5                                                16
  Issuance of common stock to CRISP                                                                                             2
  Purchase and retirement of common stock                                                                      (69)           687
  Purchase of treasury stock-preferred                                                           (4)
  Preferred dividends paid to Employee Stock Ownership Plan, net of tax
  Principal payment by Employee Stock Ownership Plan under guaranteed loan
  Amortization of unearned compensation
==================================================================================================================================
  Balance at September 30, 1998                                                                $ 61           $ 67          $  --
==================================================================================================================================
  1999
  Net income
  Foreign currency translation adjustments
  Change in unrealized gain on available-for-sale securities
- ----------------------------------------------------------------------------------------------------------------------------------
  Total comprehensive income
- ----------------------------------------------------------------------------------------------------------------------------------
  Common dividends paid
  Issuance of stock under employee compensation plans, net of tax benefit of $5                                  2
  Issuance of common stock to CRISP
  Purchase and retirement of common stock                                                                       (2)
  Purchase of treasury stock-preferred                                                           (3)
  Preferred dividends paid to Employee Stock Ownership Plan, net of tax
  Principal payment by Employee Stock Ownership Plan under guaranteed loan
  Amortization of unearned compensation
  Notes receivable for restricted stock, net
==================================================================================================================================
  Balance at September 30, 1999                                                                $ 58           $ 67          $  --
==================================================================================================================================
</TABLE>

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

34
<PAGE>   15
<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------
                                   ACCUMULATED                                     NOTES
                                         OTHER                  DEFERRED      RECEIVABLE          TOTAL            TOTAL
   ADDITIONAL        RETAINED    COMPREHENSIVE       UNEARNED   EMPLOYEE  FOR RESTRICTED   STOCKHOLDERS'   COMPREHENSIVE
   PAID-IN CAPITAL   EARNINGS    INCOME (LOSS)   COMPENSATION   BENEFITS           STOCK          EQUITY          INCOME
- ------------------------------------------------------------------------------------------------------------------------
<S>                  <C>         <C>             <C>            <C>       <C>              <C>             <C>


             $  24     $1,177            $  56          $ (17)     $ (64)          $  --           $ 745
========================================================================================================================
                           93                                                                                      $  93
                                           (45)                                                                      (45)
                                            24                                                                        24
- -----------------------------------------------------------------------------------------------------------=============
                                                                                                                   $  72
- -----------------------------------------------------------------------------------------------------------=============
                          (28)
                13                                        (11)
                 2


                           (4)
                                                                       2
                                                           10
========================================================================================================================
             $  39     $1,238            $  35          $ (18)     $ (62)          $  --           $ 728
========================================================================================================================


                          122                                                                                      $ 122
                                           (11)                                                                      (11)
                                           (37)                                                                      (37)
- -----------------------------------------------------------------------------------------------------------=============
                                                                                                                   $  74
- -----------------------------------------------------------------------------------------------------------=============
                          (29)
                27                                        (18)
                 3
               (64)     (656)

                          (3)
                                                                      2
                                                           10
========================================================================================================================
             $   5     $  672             $(13)         $ (26)     $ (60)          $  --           $ 706
========================================================================================================================

                           97                                                                                      $  97
                                           (17)                                                                      (17)
                                           (14)                                                                      (14)
- -----------------------------------------------------------------------------------------------------------=============
                                                                                                                   $  66
- -----------------------------------------------------------------------------------------------------------=============
                          (29)
                34                                        (16)
                 5
               (39)        (3)

                           (3)
                                                                     1
                                                           12
                                                                                     (25)
========================================================================================================================
             $   5     $  734            $ (44)         $ (30)     $ (59)          $ (25)          $ 706
========================================================================================================================
</TABLE>

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


                                                                              35
<PAGE>   16

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



NOTE A SIGNIFICANT ACCOUNTING POLICIES

The consolidated financial statements have been prepared in conformity with
generally accepted accounting principles. The significant accounting policies of
Cabot Corporation ("Cabot") are described below.

PRINCIPLES OF CONSOLIDATION

The consolidated financial statements include the accounts of Cabot and
majority-owned and controlled U.S. and non-U.S. subsidiaries. Investments in
majority-owned affiliates where control does not exist and investments in 20% to
50% owned affiliates are accounted for using the equity method. Intercompany
transactions have been eliminated.

CASH EQUIVALENTS

Cash equivalents include all highly liquid investments with a maturity of three
months or less at date of acquisition.

INVENTORIES

Inventories are stated at the lower of cost or market. The cost of most U.S.
inventories is determined using the last-in, first-out ("LIFO") method. The cost
of other U.S. and all non-U.S. inventories is determined using the average cost
method or the first-in, first-out ("FIFO") method. (Note C)

INVESTMENTS

Investments include investments in equity affiliates, investments in equity
securities, and investments accounted for under the cost method. Investments in
equity securities are classified as available-for-sale and are recorded at their
fair market values. Accordingly, any unrealized holding gains or losses, net of
taxes, are excluded from income and recognized as a separate component of other
comprehensive income within stockholders' equity. The fair value of equity
securities is determined based on market prices at the balance sheet dates. The
cost of equity securities sold is determined by the specific identification
method. (Notes D and K)

PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment are recorded at cost. Depreciation of property,
plant and equipment is generally calculated on the straight-line method for
financial reporting purposes. The depreciable lives for buildings, machinery and
equipment, and other fixed assets are 20 to 25 years, 10 to 20 years, and 3 to
20 years, respectively. The cost and accumulated depreciation for property,
plant and equipment sold, retired, or otherwise disposed of are relieved from
the accounts, and resulting gains or losses are reflected in income. (Note E)

INTANGIBLE ASSETS

Intangible assets are comprised of the cost of business acquisitions in excess
of the fair value assigned to the net tangible assets acquired and the costs of
technology, licenses, and patents purchased in business acquisitions. The excess
of cost over the fair value of net assets acquired is amortized on the
straight-line basis during the shorter of the estimated useful life or 40 years.
Other intangibles are amortized over their estimated useful lives. Included in
other charges is amortization expense of $5 million for 1999, 1998 and 1997.
(Note B)

IMPAIRMENT OF LONG-LIVED ASSETS

Cabot reviews long-lived assets for impairment whenever events or changes in
business circumstances indicate that the carrying amount of the assets may not
be fully recoverable. Each impairment test is based on comparison of
undiscounted cash flows to the recorded value of the asset. If an impairment is
indicated, the asset is written down to its fair value. (Note B)

FOREIGN CURRENCY TRANSLATION

Substantially all assets and liabilities of foreign operations are translated
into U.S. dollars at exchange rates in effect at the balance sheet dates.
Unrealized currency translation adjustments are accumulated as a separate
component of other comprehensive income and stockholders' equity. Income and
expense items are translated at average exchange rates during the year. Foreign
currency gains and losses arising from transactions are reflected in net income.
Included in other charges for 1999, 1998 and 1997, are foreign exchange losses
of $1 million, $7 million and $6 million, respectively. The financial statements
of foreign operations that operate in hyper-inflationary economies are
translated at either current or historical exchange rates, as appropriate. These
currency adjustments are included in net income. (Note K)

FINANCIAL INSTRUMENTS

Derivative financial instruments are used by Cabot to manage its interest rates,
foreign currency exposures, and commodity prices. Interest rate swaps are
employed to achieve Cabot's interest rate objectives. The interest differential
to be paid or received under the related interest rate swap agreements is
recognized over the life of the related debt and is included in interest income
or expense. Realized gains and losses on foreign currency instruments, that are
effective as hedges of investments in foreign operations, are recognized in
income as the instruments mature. Realized and unrealized gains and losses on
forward currency contracts, which are not hedges of committed transactions of
assets and liabilities, are recognized in income in other charges, net. Realized
gains and losses on foreign currency instruments, which are hedges of committed
transactions, are

36
<PAGE>   17
recognized at the time the underlying transaction is completed. Commodity
futures, forward contracts, price swaps, and option contracts are used by Cabot
on occasion to hedge the procurement of raw materials, primarily liquefied
natural gas, and to hedge the purchase and sale of feedstock. Realized gains and
losses on commodity futures, forwards, swaps, and options contracts on
qualifying hedges are included as a component of raw materials or sales revenue,
as appropriate, and are recognized when the related materials are purchased or
sold. (Note P)

REVENUE RECOGNITION

Revenues are recognized when finished products are shipped to unaffiliated
customers or services have been rendered, with an appropriate provision for
uncollectible accounts.

INCOME TAXES

Deferred income taxes are determined based on the estimated future tax effects
of differences between financial statement carrying amounts and the tax bases of
existing assets and liabilities. Provisions are made for the U.S. income tax
liability and additional non-U.S. taxes on the undistributed earnings of
non-U.S. subsidiaries, except for amounts Cabot has designated to be
indefinitely reinvested. (Note M)

EQUITY INCENTIVE PLANS

In accordance with the provisions of Statement of Financial Accounting Standards
No. 123, "Accounting for Stock-Based Compensation" ("SFAS No. 123"), Cabot has
elected to account for stock-based compensation plans consistent with Accounting
Principles Board Opinion No. 25, "Accounting for Stock Issued to Employees"
("APB No. 25"), and related interpretations in accounting. Cabot discloses the
summary of pro forma effects to reported net income and earnings per share for
1999, 1998 and 1997, as if Cabot had elected to recognize compensation cost
based on the fair value of the options granted at grant date, as prescribed by
SFAS No. 123. (Note J)

     Under Cabot's Equity Incentive Plans, common stock may be granted at a
discount to certain key employees. Generally, restricted stock awards cannot be
sold or otherwise encumbered during the three years following the grant. Upon
issuance of stock under the plan, unearned compensation equivalent to the
difference between the market value on the date of the grant and the discounted
price is charged to a separate component of stockholders' equity and
subsequently amortized over the vesting period.

YEAR 2000 COSTS

Costs of modifying hardware and software for Year 2000 compliance are expensed
as they are incurred.

COMPREHENSIVE INCOME

As of October 1, 1998, Cabot adopted Statement of Financial Accounting Standards
No. 130, "Reporting Comprehensive Income" ("SFAS No. 130"). The adoption of this
Statement had no impact on net income or stockholders' equity. SFAS No. 130
establishes new rules for the reporting and display of comprehensive income and
its components. Accumulated Other Comprehensive Income (Loss), which is
disclosed in the stockholders' equity section of the consolidated balance sheet,
includes unrealized gains or losses on available-for-sale securities,
translation adjustments on investments in foreign subsidiaries, and translation
adjustments on foreign securities. Prior to the adoption of SFAS No. 130, Cabot
reported such unrealized gains or losses and translation adjustments separately
in the stockholders' equity section of the consolidated balance sheet. Amounts
in the prior year financial statements have been reclassified to conform to SFAS
No. 130. (Note K)

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

Effective September 30, 1999, Cabot adopted Statement of Financial Accounting
Standards No. 132, "Employers' Disclosure about Pensions and Other
Postretirement Benefits" ("SFAS No. 132"). The provisions of SFAS No. 132 revise
employers' disclosures regarding pension and other postretirement benefit plans,
but do not change the measurement or recognition of such plans. (Note H)

FINANCIAL INFORMATION BY SEGMENT

Beginning with this annual report, Cabot adopted Statement of Financial
Accounting Standards No. 131, "Disclosures about Segments of an Enterprise and
Related Information" ("SFAS No. 131"). SFAS No. 131 supersedes SFAS No. 14,
"Financial Reporting for Segments of a Business Enterprise," replacing the
"industry segment" approach with the "management" approach. The new framework
for segment reporting is intended to give analysts and other financial statement
users a view of Cabot "through the eyes of management." It designates Cabot's
internal management reporting structure as the basis for determining Cabot's
reportable segments, as well as the basis for determining the information to be
disclosed for those segments. SFAS No. 131 also requires certain disclosures
about products and services, geographic areas, and major customers. The adoption
of SFAS No. 131 did not affect results of operations or financial position, but
did affect the disclosure of segment information. (Note Q)


                                                                              37
<PAGE>   18
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)



ENVIRONMENTAL CLEANUP MATTERS

Cabot expenses environmental costs related to existing conditions resulting from
past or current operations and from which no current or future benefit is
discernible. Cabot determines its liability on a site-by-site basis and records
a liability at the time when it is probable and can be reasonably estimated.
Cabot's estimated liability is reduced to reflect the anticipated participation
of other potentially responsible parties in those instances where it is probable
that such parties are legally responsible and financially capable of paying
their respective shares of the relevant costs. The estimated liability of Cabot
is not discounted or reduced for possible recoveries from insurance carriers.
(Note O)

USE OF ESTIMATES

The preparation of consolidated financial statements, in conformity with
generally accepted accounting principles, requires management to make certain
estimates and assumptions that affect the reported amount of assets and
liabilities and the disclosure of contingent assets and liabilities, at the date
of the consolidated financial statements, and the reported amounts of revenues
and expenses during the reported period. Actual results could differ from those
estimates.

RECLASSIFICATIONS

Certain amounts in 1998 and 1997 have been reclassified to conform to the 1999
presentation. Additionally, global focus in manufacturing, primarily in the
chemicals businesses, resulted in reclassifications related to revenues, cost of
sales, selling and administrative expenses, and research and technical service
to achieve consistent definitions for cost classifications across all businesses
and regions. The reclassifications resulted in the following adjustments in the
statements of income:


<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------
  YEARS ENDED SEPTEMBER 30                        1999         1998         1997
- -------------------------------------------------------------------------------
  DOLLARS IN MILLIONS
<S>                                               <C>          <C>          <C>
  Decrease in revenue                              $ 5          $ 4          $ 5
  Increase in cost of sales                         13           12           11
  Decrease in selling
    and administrative expense                      17           14           13
  Decrease in research
    and technical service                            1            2            3
- --------------------------------------------------------------------------------
</TABLE>



NOTE B SPECIAL ITEMS AND BUSINESS DEVELOPMENTS

During 1999, Cabot began implementation of initiatives to reduce costs and
improve operating efficiencies. In connection with these efforts, Cabot recorded
a $26 million charge for capacity utilization and cost reduction initiatives.
These initiatives included $16 million for severance and termination benefits
for approximately 265 employees, of which $7 million was paid out in 1999, and a
charge of $10 million for the retirement of certain long-lived plant assets,
primarily at the Australian carbon black facility and European plastics
masterbatch operations. These expenses are included as special items in the
consolidated statements of income. Cabot expects these initiatives to be
substantially completed by the end of fiscal year 2000.

     On November 14, 1995, Cabot modified its joint venture agreement for its
carbon black venture in Shanghai, China. This amendment provided for the
expansion of the facility and the increase of Cabot's ownership interest to 70%,
to take effect as the expansion was funded. On October 1, 1998, Cabot's
ownership in the venture increased to 70% and accordingly, is now accounted for
on a consolidated basis.

     During 1996, Cabot acquired an 80% ownership interest in P.T. Continental
Carbon Indonesia ("PTCCI"), an Indonesian carbon black plant located in Merak,
Indonesia. During 1998, the financial and economic circumstances in Indonesia
resulted in a significant decline in demand for carbon black in the region. As a
result, management halted production at this plant. In accordance with Statement
of Financial Accounting Standards No. 121, "Accounting for the Impairment of
Long-Lived Assets" ("SFAS No. 121"), Cabot recognized in the third quarter of
1998, an impairment loss of $60 million for the difference between the carrying
value of PTCCI's long-lived assets of $77 million and the estimated fair value.
The charge related to the Chemicals Group consisted of $34 million for property,
plant and equipment and other assets and $26 million for goodwill and other
intangible assets. Cabot will continue to maintain the facility and assess the
demand for carbon black in the region as a basis for future decisions to restart
production.

     During 1997, Cabot entered into an agreement to process tantalum ore
residues accumulated from Cabot's past production of tantalum. Cabot expected
the process to produce economic recoveries of tantalum and capitalized prepaid
expenses of approximately $25 million associated with the agreement. However,
the tantalum recovery rate was substantially lower than expected. Therefore, in
the third quarter of 1998, management discontinued the project, resulting in a
charge of $25 million related to operations of the Performance Materials
segment.

     On December 18, 1997, Cabot signed an agreement, effective October 1, 1997,
to acquire the remaining 50% interest in its fumed silica joint venture in
Rheinfelden, Germany, for approximately $20 million. The acquisition was
accounted for using the purchase method of accounting. Accordingly, the purchase
price was allocated to the net assets acquired based on their estimated fair
values. The excess of purchase price over fair value of net assets acquired,
approximately $11 million, was recorded as goodwill and is being amortized over
15 years.


38
<PAGE>   19
     During 1997, earnings were reduced by the recognition of special charges
totaling $18 million comprised of asset impairments of $10 million and employee
severance costs of $8 million related to the Chemicals Group and Performance
Materials segments.



NOTE C INVENTORIES

Inventories, net of reserves, were as follows:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
  SEPTEMBER 30                                          1999                1998
- --------------------------------------------------------------------------------
  DOLLARS IN MILLIONS
<S>                                                     <C>                 <C>
  Raw materials                                          $72                $ 68
  Work in process                                         55                  63
  Finished goods                                          91                  76
  Other                                                   41                  44
- --------------------------------------------------------------------------------
  Total                                                  $259               $251
================================================================================
</TABLE>

     Inventories valued under the LIFO method comprised approximately 27% and
32% of 1999 and 1998 total inventory, respectively. At September 30, 1999 and
1998, the estimated current cost of these inventories exceeded their stated
valuation determined on the LIFO basis by approximately $45 million and $32
million, respectively.



NOTE D INVESTMENTS

At September 30, 1999 and 1998, investments in common stock accounted for using
the equity method amounted to $72 million and $91 million, respectively.
Dividends received from equity affiliates were $19 million in 1999, $7 million
in 1998, and $11 million in 1997.

     The combined results of operations and financial position of Cabot's
equity-basis affiliates are summarized below:

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------
  SEPTEMBER 30                                             1999             1998
- -------------------------------------------------------------------------------

  DOLLARS IN MILLIONS
<S>                                                        <C>              <C>
  CONDENSED INCOME STATEMENT
    INFORMATION:
  Net sales                                                $622             $618
  Gross profit                                              228              238
  Net income                                                 39               26
  CONDENSED BALANCE SHEET
    INFORMATION:
  Current assets                                           $274             $281
  Non-current assets                                        396              419
  Current liabilities                                       247              222
  Non-current liabilities                                   280              307
  Net assets                                                143              171
================================================================================
</TABLE>

Other investments include available-for-sale equity securities. The cost and
fair value of available-for-sale equity securities are summarized as follows:


<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------
  SEPTEMBER 30                                              1999           1998
- -------------------------------------------------------------------------------
  DOLLARS IN MILLIONS
<S>                                                         <C>            <C>
  Cost                                                      $ 20           $ 31
  Cumulative unrealized holding gains                          5             26
  Foreign currency translation adjustment
    on foreign denominated securities                         (1)           (3)
- -------------------------------------------------------------------------------
  Fair value                                                $ 24           $ 54
================================================================================
</TABLE>

     Unrealized holding gains were credited to accumulated other comprehensive
income in stockholders' equity net of deferred taxes of $2 million and $9
million at September 30, 1999 and 1998, respectively. Foreign currency
translation adjustments on foreign securities are included in accumulated other
comprehensive income within stockholders' equity as part of foreign currency
translation adjustments. Gains related to sales of available-for-sale equity
securities were $10 million and $90 million in 1999 and 1998, respectively.
Sales of available-for-sale equity securities were not significant for the year
ended September 30, 1997.



NOTE E PROPERTY, PLANT & EQUIPMENT

Property, plant and equipment is summarized as follows:


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
  SEPTEMBER 30                                              1999            1998
- --------------------------------------------------------------------------------
  DOLLARS IN MILLIONS

<S>                                                       <C>             <C>
  Land and improvements                                   $   74          $   74
  Buildings                                                  297             291
  Machinery and equipment                                  1,394           1,277
  Other                                                       80              74
  Construction in progress                                   194             198
- --------------------------------------------------------------------------------
  Total property, plant and equipment                      2,039           1,914
  Less: accumulated depreciation                           1,015             936
- --------------------------------------------------------------------------------
  Net property, plant and equipment                       $1,024          $  978
================================================================================
</TABLE>

     Depreciation expense was $120 million, $110 million and $105 million for
the years ended September 30, 1999, 1998 and 1997, respectively.


                                                                              39
<PAGE>   20
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)



NOTE F ACCOUNTS PAYABLE & ACCRUED LIABILITIES

Accounts payable and accrued liabilities consisted of the following:


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
  SEPTEMBER 30                                             1999             1998
- --------------------------------------------------------------------------------
  DOLLARS IN MILLIONS

<S>                                                        <C>              <C>
  Accounts payable                                         $157             $148
  Accrued employee compensation                              28               22
  Other accrued liabilities                                  67               99
- --------------------------------------------------------------------------------
  Total                                                    $252             $269
================================================================================
</TABLE>


NOTE G DEBT

Unsecured long-term debt consisted of the following:


<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------
  SEPTEMBER 30                                              1999           1998
- -------------------------------------------------------------------------------
  DOLLARS IN MILLIONS
<S>                                                        <C>            <C>
  FIXED RATE NOTES (STATED RATE):
    Notes due 2002-2022, 8.1%                              $ 105          $ 105
    Notes due 2004-2011, 7.1%                                 90             90
    Note due 2027, 7.3%                                       25             25
    Note due 2027, put option 2004, 6.6%                      25             25
    Notes due 2000-2018, 6.6%                                100             --
    Guarantee of ESOP notes, due 2013, 8.3%                   59             60
    Notes due 1999-2002, 6.0%                                  6             --
    Notes due 1999-2002, 7.2%                                  5             --
    Foreign term loan, due 2000, 8.7%                          2              7
    Other, due beginning in 2000 with
     various rates from 3.0% to 18.5%                          8              7

  VARIABLE RATE NOTE (END OF YEAR RATE):
    Foreign term loan, due 2001,
     floating rate 4.7%                                        5              8
- -------------------------------------------------------------------------------
                                                             430            327
  Less: current portion of long-term debt                    (11)           (11)
- -------------------------------------------------------------------------------
  Total                                                    $ 419          $ 316
===============================================================================
</TABLE>

     In June 1992, Cabot filed a registration statement on Form S-3 with the
Securities and Exchange Commission covering $300 million of debt securities. In
1992, $105 million of medium-term notes were issued to refinance $105 million of
notes payable. The medium-term notes have a weighted-average maturity of 19
years and a weighted-average interest rate of 8.1%.

     In February 1997, Cabot issued $90 million of medium-term notes. The notes
have a weighted-average maturity of 11 years and a weighted-average interest
rate of 7.1%.

     In October 1997, Cabot issued a total of $50 million in medium-term notes.
These notes included a $25 million note, with an interest rate of 7.3% due in
2027, and a $25 million note, with an interest rate of 6.6% due in 2027, with a
put option in 2004.

     In September 1998, Cabot filed a shelf registration statement on Form S-3
with the Securities and Exchange Commission covering $500 million of debt
securities. This registration includes the remaining $55 million not then issued
under the 1992 registration.

     In December 1998, Cabot issued $100 million in medium-term notes. The notes
have a weighted-average maturity of 6 years and a weighted-average interest rate
of 6.6%.

     In November 1988, Cabot's Employee Stock Ownership Plan ("ESOP") borrowed
$75 million from an institutional lender in order to finance its purchase of
75,000 shares of Cabot's Series B ESOP Convertible Preferred Stock. This debt
bears interest at 8.3% per annum, and is to be repaid in equal quarterly
installments through December 31, 2013. Cabot, as guarantor, has reflected the
outstanding balance of $59 million and $60 million as a liability in the
consolidated balance sheet at September 30, 1999 and 1998, respectively. An
equal amount, representing deferred employee benefits, has been recorded as a
reduction to stockholders' equity.

     Cabot may borrow up to $300 million at floating rates under the terms of a
revolving credit and term loan facility. The agreement contains specific
covenants, including certain maximum indebtedness limitations and minimum cash
flow requirements, that would limit the amount available for future borrowings.
Commitment fees are paid based on the used and unused portions of the facility.
The facility is available through January 3, 2002. No amounts were outstanding
under this credit agreement at September 30, 1999 or 1998.

     The aggregate principal amounts of long-term debt due in each of the five
fiscal years 2000 through 2004 and thereafter are $11 million, $50 million, $30
million, $5 million, $40 million and $294 million, respectively.

     At September 30, 1999 and 1998, the fair market value of long-term
borrowings was approximately $417 million and $334 million, respectively.

     The weighted-average interest rate on short-term borrowing was
approximately 6.0% as of September 30, 1999 and 1998.


40
<PAGE>   21
NOTE H EMPLOYEE BENEFIT PLANS

         The following provides a reconciliation of benefit obligations, plan
assets, the funded status, and weighted-average assumptions of the defined
benefit pension and postretirement benefit plans:

<TABLE>
<CAPTION>
                                                                             PENSION BENEFITS               POSTRETIREMENT BENEFITS
                                                                          ----------------------            -----------------------
SEPTEMBER 30                                                               1999             1998             1999             1998
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                                                       <C>              <C>              <C>              <C>
DOLLARS IN MILLIONS
CHANGE IN BENEFIT OBLIGATION:
Benefit obligation at beginning of year                                    $220             $193              $90              $80
Service cost                                                                  7                8                1                1
Interest cost                                                                13               11                6                6
Plan participants' contribution                                               1                1               --               --
Amendments                                                                   --               13               --               (1)
Foreign currency exchange rate changes                                       (3)               2               --               --
Gain (loss) from changes in actuarial assumptions                            (1)               8               (1)              10
Special termination benefit                                                   1               --               --               --
Benefits paid                                                               (17)             (16)              (6)              (6)
- -----------------------------------------------------------------------------------------------------------------------------------
Benefit obligation at end of year                                          $221             $220              $90              $90
===================================================================================================================================
CHANGE IN PLAN ASSETS:
Fair value of plan assets at beginning of year                             $238             $222              $--              $--
Actual return on plan assets                                                 40               24               --               --
Employer contribution                                                         5                5                6                6
Plan participants' contribution                                               1                1               --               --
Foreign currency exchange rate changes                                       (4)               2               --               --
Benefits paid                                                               (17)             (16)              (6)              (6)
- -----------------------------------------------------------------------------------------------------------------------------------
Fair value of plan assets at end of year                                   $263             $238              $--              $--
===================================================================================================================================
Funded status                                                               $42              $18             $(90)            $(90)
Unrecognized transition amount                                               --               (3)              --               --
Unrecognized prior service cost                                              (3)               1               (3)              (1)
Unrecognized net (gain) loss                                                (51)             (34)              17               20
- -----------------------------------------------------------------------------------------------------------------------------------
Recognized liability                                                       $(12)            $(18)            $(76)            $(71)
===================================================================================================================================
AMOUNTS RECOGNIZED IN THE CONSOLIDATED BALANCE SHEETS
   CONSIST OF:
Prepaid benefit cost                                                        $15              $11              $--              $--
Other liabilities                                                           (27)             (29)             (76)             (71)
- -----------------------------------------------------------------------------------------------------------------------------------
Net amount recognized                                                      $(12)            $(18)            $(76)            $(71)
===================================================================================================================================
WEIGHTED-AVERAGE RATES:
Discount rate                                                               6.2%             6.3%             7.0%             6.3%
Expected rate of return on plan assets                                      8.1%             8.1%             N/A              N/A
Assumed rate of increase in compensation                                    4.3%             4.6%             N/A              N/A
Assumed annual rate of increase in health care benefits                     N/A              N/A              6.3%             5.5%
</TABLE>



Net periodic defined benefit pension and other postretirement benefit costs
include the following components:


<TABLE>
<CAPTION>
                                                            PENSION BENEFITS                         POSTRETIREMENT BENEFITS
                                                    ---------------------------------           -----------------------------------
YEARS ENDED SEPTEMBER 30                                1999          1998           1997           1999          1998         1997
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                                 <C>               <C>            <C>        <C>              <C>           <C>
DOLLARS IN MILLIONS
Service cost                                             $7             $8             $8             $1            $1            $1
Interest cost                                            13             11             14              6             6             6
Expected return on plan assets                          (16)           (16)           (17)            --            --            --
Amortization of transition asset                         (1)            (1)             1             --            --            --
Amortization of prior service cost                       --             --             (1)            --            --            --
Recognized losses (gains)                                 1              2             (1)             1            --            --
- -----------------------------------------------------------------------------------------------------------------------------------
Net periodic benefit cost                                $4             $4             $4             $8            $7            $7
===================================================================================================================================
</TABLE>



                                                                              41
<PAGE>   22
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)



   Cabot provides both defined benefit and defined contribution plans for its
   employees. Defined benefit pension plans include, but are not limited to, the
   Cabot Cash Balance Plan ("CBP") and several foreign pension plans. Defined
   contribution plans include the Cabot Retirement Incentive Savings Plan
   ("CRISP"), Cabot Employee Savings Plan ("CESP"), and the Cabot Employee Stock
   Ownership Plan ("ESOP").

        Cabot also has postretirement benefit plans that provide certain health
   care and life insurance benefits for retired employees. Substantially all
   U.S. employees become eligible for these benefits if they have met certain
   age and service requirements at retirement. Cabot funds the plans as claims
   or insurance premiums come due.


   DEFINED BENEFIT PENSION PLANS

   The worldwide defined benefit pension plan assets are comprised principally
   of investments in equity securities and government bonds. Prior service costs
   are amortized over the remaining 4 to 15 years, while the net transition
   assets are amortized over 1 to 4 years.

        The benefit obligation for certain foreign defined benefit pension plans
   with benefit obligations in excess of plan assets were $23 million and $32
   million, as of September 30, 1999 and 1998, respectively. The fair value of
   plan assets for the aforementioned plans were $16 million and $23 million, as
   of September 30, 1999 and 1998, respectively.

        Measurement of defined benefit pension expense is based on assumptions
   used to value the defined benefit pension liability at the beginning of the
   year.


   DEFINED CONTRIBUTION PLANS

   The total contribution recognized as an expense for the CRISP was $5 million
   in 1999 and $4 million for both 1998 and 1997. Information regarding the ESOP
   can be found in Note I.


   POSTRETIREMENT BENEFIT PLANS

   Postretirement benefit plans include health care and life insurance plans.
   Measurement of postretirement benefit expense is based on assumptions used to
   value the postretirement liability at the beginning of the year. Assumed
   health care trend rates have a significant effect on the amounts reported for
   the health care plans. A 1-percentage-point change in the 1999 assumed health
   care cost trend rate would have the following effects:

<TABLE>
<CAPTION>
                                                       1-PERCENTAGE-POINT
                                                   ----------------------------
   SEPTEMBER 30                                    INCREASE            DECREASE
- -------------------------------------------------------------------------------
<S>                                                <C>                 <C>
   DOLLARS IN MILLIONS
   Effect on total of service and interest
     cost components                                  $1                $(1)
   Effect on postretirement benefit obligation        $8                $(8)
================================================================================
</TABLE>



   NOTE I EMPLOYEE STOCK OWNERSHIP PLAN

   PLAN DESCRIPTION

   In September 1988, Cabot established an Employee Stock Ownership Plan
   ("ESOP"), a defined contribution plan, as an integral part of the retirement
   program that was designed for participants to share in the growth of Cabot.
   All employees of Cabot and its participating subsidiaries, except those
   individuals subject to collective bargaining agreements and employed by the
   Performance Materials segment, are eligible to participate beginning on the
   later of the first day of employment or the date the employee is included in
   an employee group that participates in the plan.

        In November 1988, Cabot placed 75,336 shares of its Series B ESOP
   Convertible Preferred Stock in the ESOP for cash at a price of $1,000 per
   share. Each share of the Series B ESOP Convertible Preferred Stock is
   convertible into 87.5 shares of Cabot's common stock, subject to certain
   events and anti-dilution adjustment provisions, and carries voting rights on
   an "as converted" basis. The trustee for the ESOP has the right to cause
   Cabot to redeem shares sufficient to provide for periodic distributions to
   plan participants. Cabot has the option to redeem the shares for $1,000 per
   share, convert the shares to common stock, or a combination thereof.

        The issued shares of Series B ESOP Convertible Preferred Stock receive
   preferential and cumulative quarterly dividends, and are ranked as to
   dividends and liquidation prior to Cabot's Series A Junior Participating
   Preferred Stock and common stock. At September 30, 1999, 6 million shares of
   Cabot's common stock were reserved for conversion of the Series B ESOP
   Convertible Preferred Stock.


   CONTRIBUTIONS

   On the last business day of each calendar quarter, 750 shares of the Series B
   preferred stock are released and allocated to participants' accounts. The
   allocation to each participant is based on the value of Cabot's preferred
   stock, the number of shares allocated as dividends, and the total eligible
   compensation. Effective January 1, 1997, the participant's respective
   contribution allocation cannot fall below 4% of the participant's eligible
   compensation. If the amount of the participant allocation were to fall below
   4%, Cabot would make an additional contribution to bring the total value to
   4% for the participant. Additionally, allocations in excess of 8% are used
   first to fund the CRISP employer match and any surplus would then be
   allocated to ESOP participants. The allocation is made to the account of each
   participant who is employed on that date, or has retired, died, or become
   totally and permanently disabled during the quarter. Cabot recognized
   expenses related to the ESOP of $2 million in 1999 and $1 million in both
   1998 and 1997.


42
<PAGE>   23
NOTE J EQUITY INCENTIVE PLANS

Cabot has an Equity Incentive Plan for key employees. Under the plan adopted in
1988, Cabot was able to grant participants various types of stock and
stock-based awards. During the period from 1988 through 1991, the awards granted
consisted of stock options, performance appreciation rights ("PARs"), and tandem
units that may be exercised as stock options or PARs. These awards were granted
at the fair market value of Cabot's common stock at date of grant, vested
ratably on each of the next four anniversaries of the award, and generally
expire ten years from the date of grant. From 1992 through 1995, awards
consisted of Cabot common stock, which employees could elect to receive in the
form of restricted stock purchased at a price equal to 50% of the fair market
value on the date of the award, nonqualified stock options at fair market value
of Cabot's common stock on the date of the award, or a combination of one-half
of each. Effective in March 1996, no new awards were permitted under this plan.

In December 1995, the Board of Directors adopted, and in March 1996, Cabot
stockholders approved, the 1996 Equity Incentive Plan. Under this plan, Cabot
can make various types of stock and stock-based awards, the terms of which are
determined by Cabot's compensation committee. Awards under the 1996 plan have
been made primarily as part of Cabot's Long-Term Incentive Program. These awards
consist of restricted stock, which could be purchased at a price equal to 40% of
the fair market value on the date of the award, or nonqualified stock options
exercisable at the fair market value of Cabot's common stock on the date of the
award. Variations of the restricted stock awards were made to international
employees in order to try to provide results comparable to U.S. employees. The
awards generally vest on the third anniversary of the grant for participants
then employed by Cabot, and the options generally expire five years from the
date of grant. In November 1998, the Board of Directors adopted, and in March
1999, Cabot stockholders approved, the 1999 Equity Incentive Plan. This plan is
similar to the 1996 Equity Incentive Plan with the exception of the discount
price, which was established at a price equal to 30% of the fair market value on
the date of the award.

Cabot had 6 million shares of common stock reserved for issuance under the 1996
and 1999 plans. There were approximately 3 million shares available for future
grants at September 30, 1999, under both plans. Compensation expense recognized
during 1999, 1998, and 1997 for restricted stock grants was $12 million, $10
million and $10 million, respectively.


RESTRICTED STOCK

The following table summarizes the plans' restricted stock activity for the last
three fiscal years:

<TABLE>
<CAPTION>
                                                                       WEIGHTED-
                                                                         AVERAGE
                                                       RESTRICTED       PURCHASE
                                                          STOCK            PRICE
- --------------------------------------------------------------------------------
<S>                                                    <C>              <C>
SHARES IN THOUSANDS
Outstanding at September 30, 1996                        2,287            $10.93
Granted                                                    865             14.33
Vested                                                    (696)            10.84
Canceled                                                  (203)            10.57
- --------------------------------------------------------------------------------

Outstanding at September 30, 1997                        2,253             11.87
Granted                                                  1,026             21.47
Vested                                                    (670)            10.15
Canceled                                                  (108)            11.96
- --------------------------------------------------------------------------------

Outstanding at September 30, 1998                        2,501             16.27
Granted                                                  1,034              9.19
Vested                                                    (733)            11.48
Canceled                                                  (135)             9.60
- --------------------------------------------------------------------------------

Outstanding at September 30, 1999                        2,667            $11.08
================================================================================
</TABLE>


STOCK-BASED COMPENSATION

The following table summarizes the plans' stock option activity from
September 30, 1996 through September 30, 1999:


<TABLE>
<CAPTION>
                                                                       WEIGHTED-
                                                                         AVERAGE
                                                          STOCK         EXERCISE
                                                        OPTIONS            PRICE
- --------------------------------------------------------------------------------
<S>                                                     <C>            <C>
   OPTIONS IN THOUSANDS

   Outstanding at September 30, 1996                      1,700           $ 9.77
   Granted                                                   91            23.88
   Exercised                                               (300)            8.99
   Canceled                                                 (34)           15.79
- --------------------------------------------------------------------------------

   Outstanding at September 30, 1997                      1,457            10.67
   Granted                                                  281            35.31
   Exercised                                               (393)            9.21
   Canceled                                                 (23)           18.98
- --------------------------------------------------------------------------------

   Outstanding at September 30, 1998                      1,322            16.26
   Granted                                                  582            27.00
   Exercised                                               (209)            9.73
   Canceled                                                 (50)           27.96
- --------------------------------------------------------------------------------

   Outstanding at September 30, 1999                      1,645           $20.53
================================================================================
</TABLE>




         Options outstanding at September 30, 1999, were as follows:

<TABLE>
<CAPTION>
                           OPTIONS OUTSTANDING                 OPTIONS EXERCISABLE
                                  WEIGHTED-AVERAGE
                                                                            WEIGHTED-
                    THOUSANDS                 REMAINING      THOUSANDS       AVERAGE
RANGE OF           OF OPTIONS   EXERCISE     CONTRACTUAL     OF OPTIONS      EXERCISE
EXERCISE PRICE    OUTSTANDING    PRICE        LIFE YEARS     EXERCISABLE      PRICE
- -------------------------------------------------------------------------------------
<S>               <C>           <C>          <C>             <C>            <C>
$7.59 -  8.50       634         $ 7.79           1.65           634          $ 7.79
20.00 - 26.70       180          23.20           1.88            98           22.64
27.00 - 35.31       831          29.67           4.68            --           --
- -------------------------------------------------------------------------------------
Total options     1,645                                         732
=====================================================================================
</TABLE>

         The estimated weighted-average fair value of the options granted during
fiscal 1999, 1998 and 1997 were $8.24, $11.00 and $6.37, respectively, on the
date of grant using the Black-


                                                                              43



<PAGE>   24
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)


Scholes option-pricing model and the following weighted-average assumptions:



<TABLE>
<CAPTION>
   YEARS ENDED SEPTEMBER 30                  1999            1998            1997
   ------------------------------------------------------------------------------
<S>                                      <C>             <C>             <C>
   Expected stock price volatility             35%             34%             26%
   Risk free interest rate                    5.4%            5.6%            6.5%
   Expected life of options               4 YEARS         4 years         4 years
   Expected annual dividends             $   0.44        $   0.42        $   0.40
   ==============================================================================
</TABLE>



        Had the fair value based method been adopted, Cabot's pro forma net
   income and pro forma net income per common share for fiscal 1999, 1998 and
   1997 would have been as follows:


<TABLE>
<CAPTION>
   YEARS ENDED SEPTEMBER 30                 1999            1998            1997
   -----------------------------------------------------------------------------
<S>                                     <C>             <C>             <C>
   Net income - pro forma
     (in millions)                      $     96        $    121        $     93
   Net income per common
     share - pro forma:
       Basic                            $   1.45        $   1.80        $   1.32
       Diluted                          $   1.29        $   1.60        $   1.18
   =============================================================================
</TABLE>



        The effects of applying the fair value based method in this pro forma
   disclosure are not indicative of future amounts. The fair value based method
   does not apply to awards prior to 1995 and additional awards in future years
   are anticipated.


   NOTE K STOCKHOLDERS' EQUITY

   The following table summarizes Cabot's stock activity:

<TABLE>
<CAPTION>
   YEARS ENDED SEPTEMBER 30                        1999        1998        1997
   ----------------------------------------------------------------------------
<S>                                                <C>         <C>         <C>
   PREFERRED SHARES IN THOUSANDS,
   COMMON SHARES IN MILLIONS
   PREFERRED STOCK
   Beginning of year                                 75          75          75
   ----------------------------------------------------------------------------
     End of year                                     75          75          75
   ============================================================================
   PREFERRED TREASURY STOCK
   Beginning of year                                  9           7           6
   Purchased preferred treasury stock                 1           2           1
   ----------------------------------------------------------------------------
     End of year                                     10           9           7
   ============================================================================
   COMMON STOCK
   Beginning of year                                 67         136         136
   Issued common stock                                2          --          --
   Purchased and retired
     common stock                                    (2)         --          --
   Retirement of treasury stock                      --         (69)         --
   ----------------------------------------------------------------------------
     End of year                                     67          67         136
   ============================================================================
   COMMON TREASURY STOCK
   Beginning of year                                 --          67          65
   Purchased                                         --           4           3
   Issued                                            --          (2)         (1)
   Retirement of treasury stock                      --         (69)         --
   ----------------------------------------------------------------------------
     End of year                                     --          --          67
   ============================================================================
</TABLE>


        In May 1999, Cabot adopted a stock purchase assistance plan whereby
   Cabot may extend credit to purchase restricted shares of Cabot Corporation
   common stock awarded under Cabot's 1999 Equity Incentive Plan to those
   participants in Cabot's 1999 Long-Term Incentive Program. The notes bear
   interest at 6% per annum on a principal amount of up to 30% of the aggregate
   fair market value of such purchased stock on the day of grant. Interest is
   payable quarterly and principal is due on various dates through May 2002. On
   June 30, 1999, Cabot purchased, from a financial institution, loans to Cabot
   employees totaling $18 million. These loans were made to help finance the
   purchase of restricted shares of Cabot Corporation common stock under Cabot's
   Long-Term Incentive Program. As of September 30, 1999, the notes outstanding
   totaled approximately $25 million and are included as a separate component of
   stockholders' equity.

        In September 1998, the Board of Directors authorized Cabot to purchase
   up to 4 million shares of Cabot's common stock, superseding the previous
   authorization issued in May 1997. As of September 30, 1999, Cabot had
   purchased approximately 2 million shares under the new authorization.

        On September 11, 1998, the Board of Directors adopted a resolution to
   retire and restore to the status of authorized, but unissued, both the entire
   balance of shares of common stock classified as common treasury stock and all
   subsequent acquisitions/purchases effective September 30, 1998. For the year
   ended September 30, 1998, a total of 69 million shares of Cabot's common
   stock had been retired.

        In November 1995, Cabot declared a dividend of one Preferred Stock
   Purchase Right ("Right") for each outstanding share of Cabot's common stock.
   Each Right entitles the holder, upon the occurrence of certain specified
   events, to purchase from Cabot one one-hundredth of a share of Series A
   Junior Participating Preferred Stock at a purchase price of $200 per share.
   The Right further provides that each Right will entitle the holder, upon the
   occurrence of certain other specified events, to purchase from Cabot its
   common stock having a value of twice the exercise price of the Right, and
   upon the occurrence of certain other specified events, to purchase from
   another person into which Cabot was merged or which acquired 50% or more of
   Cabot's assets or earnings power, common stock of such other person having a
   value of twice the exercise price of the Right. The Right may generally be
   redeemed by Cabot at a price of $0.01 per Right. The Rights are not presently
   exercisable and will expire on November 10, 2005.




44

<PAGE>   25
COMPREHENSIVE INCOME

      The pretax, tax, and after-tax effects of the components of other
comprehensive income are shown below:

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30                        PRETAX        TAX        AFTER-TAX
- ----------------------------------------------------------------------------------
DOLLARS IN MILLIONS
<S>                                             <C>           <C>        <C>
1997
Foreign currency translation
  adjustments                                    $(45)         $--         $(45)
Unrealized holding gain arising
  during period on marketable
  equity securities                                38          (14)          24
- ----------------------------------------------------------------------------------
Other comprehensive income (loss)                $ (7)        $(14)        $(21)
==================================================================================
1998

Foreign currency translation
  adjustments                                    $(11)         $--         $(11)
UNREALIZED GAIN ON MARKETABLE
  EQUITY SECURITIES:
  Unrealized holding gain arising
    during period                                  28          (14)          14
  Less: reclassification adjustment
    for gain realized in net income               (90)          39          (51)
- ----------------------------------------------------------------------------------
  Change in unrealized gain                       (62)          25          (37)
- ----------------------------------------------------------------------------------
Other comprehensive income (loss)                $(73)        $ 25         $(48)
==================================================================================

1999
Foreign currency translation
  adjustments                                    $(17)         $--         $(17)
UNREALIZED GAIN ON MARKETABLE
  EQUITY SECURITIES:
  Unrealized holding loss arising
    during period                                 (10)           3           (7)
  Less: reclassification adjustment
    for gain realized in net income               (11)           4           (7)
- ----------------------------------------------------------------------------------
  Change in unrealized gain                       (21)           7          (14)
- ----------------------------------------------------------------------------------
Other comprehensive income (loss)                $(38)        $  7         $(31)
==================================================================================
</TABLE>


      The balance of related after-tax components comprising accumulated other
comprehensive income (loss) are summarized below:

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30                       1999          1998          1997
- --------------------------------------------------------------------------------
DOLLARS IN MILLIONS
<S>                                           <C>           <C>           <C>
Foreign currency translation
  adjustment                                   $(47)         $(30)         $(19)
Unrealized gain on marketable
  equity securities                               3            17            54
- --------------------------------------------------------------------------------
Accumulated other
  comprehensive income (loss)                  $(44)         $(13)         $ 35
================================================================================
</TABLE>


NOTE L EARNINGS PER SHARE

Basic and diluted earnings per share ("EPS") were calculated as follows:

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30                              1999         1998         1997
- -------------------------------------------------------------------------------------
DOLLARS IN MILLIONS (EXCEPT PER SHARE AMOUNTS)
<S>                                                  <C>          <C>          <C>
BASIC EPS:
  Income available to common
    shares (numerator)                               $  94        $ 118        $  90
=====================================================================================
  Weighted-average common
    shares outstanding                                  67           68           70
  Less: contingently issuable shares                    (3)          (2)          (2)
- -------------------------------------------------------------------------------------
  Adjusted weighted-average
    shares (denominator)                                64           66           68
=====================================================================================
  Basic EPS                                          $1.47        $1.80        $1.33
=====================================================================================
DILUTED EPS:
  Income available to common
    shares                                           $  94        $ 118        $  90
  Dividends on preferred stock                           3            4            3
  Less: income impact of assumed
    conversion of preferred stock                       (2)          (2)          (2)
- -------------------------------------------------------------------------------------
  Income available to common
    shares plus assumed
    conversions (numerator)                          $  95        $ 120        $  91
=====================================================================================
  Weighted-average common
    shares outstanding                                  67           68           70
  Effect of dilutive securities:
    Stock-based compensation(a)                          6            7            7
- -------------------------------------------------------------------------------------
  Adjusted weighted-average
    shares (denominator)                                73           75           77
=====================================================================================
  Diluted EPS                                        $1.31        $1.61        $1.19
=====================================================================================
</TABLE>

(a)   Options to purchase 1 million shares of common stock with a
      weighted-average exercise price of $29.54 were outstanding at September
      30, 1999, but were not included in the computation of diluted EPS, because
      the options' exercise price was greater than the average market price of
      the common shares.


NOTE M INCOME TAXES

Income before income taxes was as follows:

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30                      1999          1998          1997
- --------------------------------------------------------------------------------
DOLLARS IN MILLIONS
<S>                                           <C>           <C>           <C>
Domestic                                      $ 40          $ 46          $ 30
Foreign                                         96           122            87
- --------------------------------------------------------------------------------
Total                                         $136          $168          $117
================================================================================
</TABLE>


                                                                              45
<PAGE>   26
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)


        Taxes on income consisted of the following:

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30                     1999           1998           1997
- --------------------------------------------------------------------------------
DOLLARS IN MILLIONS
<S>                                          <C>            <C>            <C>
U.S. FEDERAL AND STATE:
Current                                      $ 12           $ (1)          $  8
Deferred                                       (2)             6             (9)
- --------------------------------------------------------------------------------
Total                                        $ 10           $  5           $ (1)
================================================================================
FOREIGN:
Current                                      $ 40           $ 50           $ 47
Deferred                                       (1)             5             (4)
- --------------------------------------------------------------------------------
Total                                        $ 39           $ 55           $ 43
================================================================================
Total U.S. and foreign                       $ 49           $ 60           $ 42
================================================================================
</TABLE>


      The provision for income taxes at Cabot's effective tax rate differed from
the provision for income taxes at the statutory rate as follows:

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30                           1999        1998        1997
- --------------------------------------------------------------------------------
DOLLARS IN MILLIONS
<S>                                                <C>         <C>         <C>
Computed tax expense at the
  federal statutory rate                           $ 47        $ 59        $ 41
FOREIGN INCOME:
  Impact of taxation at different
    rates, repatriation and other                     3           3           1
  Impact of foreign losses for
    which a current tax benefit
    is not available                                  4           4           4
State taxes, net of federal effect                    1           1           1
Foreign sales corporation                            (2)         (2)         (1)
U.S. and state benefits from research
  and experimentation activities                     (3)         (4)         (1)
Other, net                                           (1)         (1)         (3)
- --------------------------------------------------------------------------------
  Provision for income taxes                       $ 49        $ 60        $ 42
================================================================================
</TABLE>


      Significant components of deferred income taxes were as follows:


<TABLE>
<CAPTION>
SEPTEMBER 30                                              1999             1998
- --------------------------------------------------------------------------------
DOLLARS IN MILLIONS
<S>                                                      <C>              <C>
DEFERRED TAX ASSETS:
  Depreciation and amortization                          $  41            $  30
  Pension and other benefits                                60               57
  Environmental matters                                     14               13
  Special charges                                           12                5
  Investments                                               11               11
  State and local taxes                                      4                4
  Net operating loss and other
    tax carryforwards                                       16               12
  Other                                                     29               32
- --------------------------------------------------------------------------------
    Subtotal                                               187              164
- --------------------------------------------------------------------------------
  Valuation allowances                                     (18)             (11)
================================================================================
    Total deferred tax assets                            $ 169            $ 153
===============================================================================
DEFERRED TAX LIABILITIES:
  Depreciation and amortization                          $  83            $  79
  Pension and other benefits                                14               14
  Special charges                                            4             --
  Investments                                                2               11
  Other                                                    112              112
- --------------------------------------------------------------------------------
    Total deferred tax liabilities                       $ 215            $ 216
================================================================================
</TABLE>

      The valuation allowance at September 30, 1999 and 1998 represents
management's best estimate of the ultimate realization of the net deferred tax
amounts. The deferred tax valuation allowance increased in 1999 by $7 million
due to the uncertainty of the ultimate realization of certain future foreign tax
benefits and net operating losses reflected as deferred tax assets.

      Approximately $53 million of net operating losses and other tax
carryforwards remain at September 30, 1999. Of this amount, $36 million will
expire in the years 2000 through 2006; $17 million can be carried forward
indefinitely. The benefits of these carryforwards are dependent upon taxable
income during the carryforward period in those foreign jurisdictions where they
arose. Accordingly, a valuation allowance has been provided where management has
determined that it is more likely than not that the carryforwards will not be
utilized.

      Other accrued liabilities include a U.S. and foreign income tax benefit of
$15 million for 1999, and a U.S. and foreign income tax liability of $1 million
for 1998.

      U.S. income tax returns for fiscal years 1994, 1995 and 1996 are currently
under examination by the Internal Revenue Service. Assessments, if any, are not
expected to have a material adverse effect on the financial statements.


46
<PAGE>   27
     Provisions have not been made for U.S. income taxes or foreign withholding
taxes on approximately $130 million of undistributed earnings of foreign
subsidiaries, as these earnings are considered indefinitely reinvested. These
earnings could become subject to U.S. income taxes and foreign withholding taxes
(subject to a reduction for foreign tax credits) if they were remitted as
dividends, were loaned to Cabot or a U.S. subsidiary, or if Cabot should sell
its stock in the subsidiaries. However, Cabot believes that U.S. foreign tax
credits would largely eliminate any U.S. income tax and offset any foreign
withholding tax that might otherwise be due.

NOTE N SUPPLEMENTAL CASH FLOW INFORMATION
- --------------------------------------------------------------------------------
Cash payments for interest and taxes were as follows:

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30           1999        1998       1997
- --------------------------------------------------------------------------------
DOLLARS IN MILLIONS
<S>                              <C>         <C>        <C>
Income taxes paid                $   59      $   41     $   66
Interest paid                    $   36      $   40     $   39
================================================================================
</TABLE>

     During 1999, Cabot made a charitable contribution of equity securities
worth $1 million and issued restricted stock for notes receivable of $8 million.

NOTE O COMMITMENTS & CONTINGENCIES
- --------------------------------------------------------------------------------
LEASE COMMITMENTS

Cabot leases certain transportation vehicles, warehouse facilities, office
space, machinery, and equipment under operating cancelable and non-cancelable
leases, most of which expire within ten years and may be renewed by Cabot.
Rent expense under such arrangements for 1999, 1998 and 1997, totaled $14
million, $15 million and $15 million, respectively. Future minimum rental
commitments under non-cancelable leases are as follows:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
DOLLARS IN MILLIONS
<S>                                                     <C>
2000                                                    $   12
2001                                                        16
2002                                                        12
2003                                                        12
2004                                                        12
2005 and thereafter                                         76
- --------------------------------------------------------------------------------
Total future minimum rental commitments                 $  140
================================================================================
</TABLE>

OTHER LONG-TERM COMMITMENTS

Cabot has entered into long-term purchase agreements for various key raw
materials. The purchase commitments covered by these agreements aggregate
approximately $114 million for the periods 2000 to 2003.

     Cabot has also entered into a purchase agreement for liquefied natural gas
("LNG") that expires in 2003. The purchase commitments covered by this agreement
have a firm take provision of nine LNG cargoes per winter season at current
prices subject to the supplier's shipping capacity. Cabot has entered into a
second long-term agreement with a liquefaction plant in Trinidad to purchase LNG
whereby the purchase commitments have a firm take provision of up to
approximately 30 LNG cargoes per year at current prices expiring in 2019.

     During 1995, Cabot entered into an agreement to participate as a 10% owner
in a liquefaction plant in Trinidad, and to purchase approximately 60% of the
natural gas produced by the plant. At September 30, 1999, Cabot's investment in
this project was approximately $21 million and is included in other investments.
Deliveries of liquefied natural gas from Trinidad commenced in the third quarter
of 1999.

     Also during 1995, Cabot entered into long-term supply agreements of more
than six years with certain North American tire customers. The contracts are
designed to provide such customers with agreed-upon amounts of carbon black at
prices based on an agreed-upon formula.

CONTINGENCIES

Cabot is a defendant, or potentially responsible party, in various lawsuits
and environmental proceedings wherein substantial amounts are claimed or at
issue.

     During 1998, a charge to environmental expenses was made for costs incurred
for remediation of environmental issues related to a business divested in 1989.
As of September 30, 1999, Cabot has approximately $39 million reserved for
environmental matters primarily related to divested businesses. The amount
represents Cabot's current best estimate of its share of costs likely to be
incurred at those sites where costs are reasonably estimable based on its
analysis of the extent of cleanup required, alternative cleanup methods
available, abilities of other responsible parties to contribute, and its
interpretation of applicable laws and regulations applicable to each site. Cabot
reviews the adequacy of this reserve as circumstances change at individual
sites. Cabot is unable to reasonably estimate the amount of possible loss in
excess of the accrued amount. Operating results included charges for
environmental expense of $4 million for both 1999 and 1998. There were no
charges for 1997.


                                                                              47
<PAGE>   28
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

     In the opinion of Cabot, although final disposition of these suits and
claims may impact Cabot's financial statements in a particular period, they will
not, in the aggregate, have a material adverse effect on Cabot's financial
position.

     Cabot is contingently liable under a limited guarantee of its proportionate
share for the project financing of the liquefaction plant in Trinidad. The plant
began commercial production in August 1999, however, Cabot's guarantee will not
expire until the plant's debt reserve fund reaches a predetermined level and the
plant meets production quotas for 90 consecutive days. The plant is expected to
meet both of these requirements no later than the first calendar quarter of
2000. At September 30, 1999, approximately $570 million was outstanding under
the joint venture's debt agreement. Cabot's 10% share amounted to $57 million.

NOTE P RISK MANAGEMENT
- --------------------------------------------------------------------------------

Cabot Corporation is a global company divided into five reportable segments. The
Chemicals Group, Performance Materials, Specialty Fluids and Microelectronics
Materials segments manufacture, market, and distribute commodity and specialty
chemicals and materials. These products span several markets including
automotive, electronics, transportation, aerospace, defense, pharmaceuticals,
silicone rubber, packaging, agriculture, construction, inkjet printing, and oil
and gas drilling services. In addition, Cabot's Liquefied Natural Gas segment
operates a liquefied natural gas importing, storing, and distribution business
serving markets that include gas and electric utilities, natural gas marketers,
and independent power producers. In total, Cabot and its affiliates operate 45
plants in over 20 countries.

MARKET RISK

Cabot uses derivative financial instruments primarily to reduce exposure to
fluctuations in interest rates, foreign exchange rates, commodity prices, and
other market risks. When entered into, these financial instruments are
designated as hedges of underlying exposures associated with specific assets,
liabilities, firm commitments or anticipated transactions, and are monitored to
determine if they remain effective hedges. The notional amounts of derivatives
do not represent actual amounts exchanged by the parties and thus, are not a
measure of the exposure of Cabot through its use of derivatives. The amounts
exchanged are calculated by reference to the notional amounts and by other terms
of the derivatives, such as interest rates, exchange rates, commodity prices, or
other financial indices.

     Counter-parties to the derivative agreements expose Cabot to credit loss in
the event of nonperformance. However, Cabot has established counter-party credit
guidelines and only enters into transactions with financial institutions of
investment grade or better. Cabot considers the risk of counter-party default to
be minimal.

     Because of the correlation between the hedging instrument and the
underlying exposure being hedged, fluctuations in the value of the instruments
are generally offset by changes in the value of the underlying exposures.

INTEREST RATE

Cabot maintains a percentage of fixed and variable rate debt within defined
parameters. Cabot uses interest rate swaps to hedge its exposure on fixed and
variable rate debt positions. Variable rates are predominantly linked to the
London Interbank Offered Rate ("LIBOR"), as determined at either three or six
month intervals. The fixed interest rate provided by the swap on variable rate
debt is 7.4%.

     During the second quarter of 1999, Cabot settled its LIBOR basket swap. The
loss associated with the settlement was not material. At September 30, 1999 and
1998, the notional principal amounts of the interest rate swap agreements were
$100 million, expiring in 2007, and $150 million, expiring in 2004 and 2007. The
notional amount is the amount used for the calculation of interest payments that
are exchanged over the life of the swap transaction and equal to the amount of
principal exchanged at maturity. For 1999, 1998 and 1997, the gains or losses in
interest income or expense associated with these agreements were immaterial. The
fair value of the swaps was $(4) million and $(18) million as of September 30,
1999 and 1998, respectively.

FOREIGN CURRENCY

Cabot's international operations are subject to certain opportunities and risks,
including currency fluctuations and government actions. Cabot closely monitors
its operations in each country so it can respond to changing economic and
political environments and to fluctuations in foreign currencies. Accordingly,
Cabot utilizes foreign currency option contracts and forward contracts to hedge
its exposure on firm commitments and anticipated transactions, primarily for
receivables and payables denominated in currencies other than the entities'
functional currencies. Cabot also monitors its foreign exchange exposures to
ensure the overall effectiveness of its foreign currency hedge positions.
Foreign currency instruments generally have maturities that do not exceed twelve
months.


48
<PAGE>   29
     Cabot has foreign currency instruments primarily denominated in the EURO,
Japanese yen, British pound sterling, Swedish krona, Canadian dollar, and
Australian dollar. At September 30, 1999 and 1998, Cabot had $95 million and $72
million in foreign currency instruments outstanding, respectively. For 1999,
1998 and 1997, the net realized gains or (losses) associated with these types of
instruments were $(3) million, $2 million and $5 million, respectively. The net
unrealized loss as of September 30, 1999, and net unrealized gain as of
September 30, 1998, based on the fair market value of the instruments, were not
material to each respective period.

COMMODITIES

     Cabot is exposed to commodity price fluctuations that can affect its sales
revenues and supply costs. Cabot, from time to time, enters into commodity
futures contracts, commodity price swaps, and/or option contracts to hedge a
portion of firmly committed and anticipated transactions against natural gas
price fluctuations. Cabot monitors its exposure to ensure overall effectiveness
of its hedge positions.

     At September 30, 1998, the notional principal amounts of futures contracts
were $6 million, maturing through February 1999. These contracts were executed
on September 30, 1998, therefore, no gain or loss, realized or unrealized, was
recorded in 1998. In 1999, Cabot realized gains associated with these futures of
$2 million. During 1999, Cabot entered into option contracts that also expired
during the year. Cabot realized losses associated with these options of $2
million.

     At September 30, 1999, the notional principal amounts for commodity futures
contracts, commodity price swaps, and option contracts were $115 million,
maturing through August 2000. No material realized gain or loss was recognized
in 1999.

CONCENTRATION OF CREDIT

Financial instruments that subject Cabot to concentrations of credit risk
consist principally of trade receivables. Tire manufacturers comprise a
significant portion of Cabot's trade receivable balance. At September 30, 1999
and 1998, Cabot had trade receivables of approximately $55 million and $54
million, respectively, from tire manufacturers. Although Cabot's exposure to
credit risk associated with nonpayment by tire manufacturers is affected by
conditions or occurrences within the tire industry, the majority of trade
receivables from the tire manufacturers were current at September 30, 1999, and
no such manufacturer exceeded 5% of Cabot's receivables at that date.

NOTE Q FINANCIAL INFORMATION BY SEGMENT & GEOGRAPHIC AREA
- --------------------------------------------------------------------------------

SEGMENT INFORMATION

During 1999, Cabot reorganized into 19 market-focused strategic business units
("SBUs"), each having responsibility for individual global marketing strategies,
day-to-day business operations, and new product development. Under SFAS No. 131,
these SBUs aggregate into five reportable segments: Chemicals Group (which
includes carbon black, fumed silica, plastics, and inkjet colorants),
Performance Materials, Specialty Fluids, Microelectronics Materials, and
Liquefied Natural Gas. Cabot was organized into SBUs to better direct its
technical strengths and focus on key markets. Cabot's business segment reporting
under SFAS No. 131 is consistent with the changes in its financial reporting
structure incorporated in Cabot's management reporting during 1999. Segment
information for 1998 and 1997 has been restated to conform to the current
presentation. A description of Cabot's five business segments and their
products, services, and markets served is shown on page 20.

     The accounting policies of the segments are the same as those described in
the summary of "Significant Accounting Policies." Exceptions are noted as
follows and are incorporated in the following tables. Revenues from external
customers for certain operating segments within the Chemicals Group include 100%
of equity affiliate sales. Transfers of ore to Performance Materials from
Specialty Fluids are generally valued at market-based prices, and revenues
generated by these transfers are shown as segment revenues from external
customers. Cabot evaluates the performance of its segments and allocates
resources based on segment profit or loss before tax ("PBT"), including equity
in net income of affiliated companies, but excluding special items (Note B),
gains on the sale of equity securities, and foreign currency transaction gains
and losses. Corporate costs, costs related to divested businesses, and interest
expense are not allocated to operating segments. Cash, short-term investments,
investments other than equity basis, income taxes receivable, deferred taxes,
and headquarters' assets are included in Unallocated and Other. Expenditures for
additions to long-lived assets include total equity and other investments
(including available-for-sale securities), property, plant and equipment, and
intangible assets.


49
<PAGE>   30
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

Financial information by segment was as follows:

<TABLE>
<CAPTION>
                                                                                    MICRO-
                                              CHEMICALS  PERFORMANCE  SPECIALTY   ELECTRONICS   LIQUEFIED   SEGMENT  UNALLOCATED
YEARS ENDED SEPTEMBER 30                        GROUP     MATERIALS     FLUIDS     MATERIALS   NATURAL GAS   TOTAL   AND OTHER(1)
- ----------------------------------------------------------------------------------------------------------------------------------
DOLLARS IN MILLIONS
<S>                                           <C>        <C>          <C>         <C>          <C>          <C>      <C>
1999
Revenues from external customers(2)             $1,204      $187         $ 12          $96         $265      $1,764      $ (69)
Depreciation and amortization                      104         8            4            3            4         123          2
Equity in net income of affiliated companies         8         5           --           --           --          13         --
Profit (loss) before taxes(3)                      188        34           (3)          22            7         248       (112)
Assets(4)                                        1,244       205           50           70          167       1,736        106
Investment in equity-basis affiliates               52        20           --           --           --          72         --
Total expenditures for additions to
   long-lived assets(5)                         $  114      $  9         $  3          $17         $ 22      $  165      $   7
==================================================================================================================================
1998
Revenues from external customers(2)             $1,279      $175         $ 13          $57         $211      $1,735      $ (91)
Depreciation and amortization                      100         7            3            2            2         114          1
Equity in net income of affiliated companies        12         5           --           --           --          17         --
Profit (loss) before taxes(3)                      221        25           (2)           9           15         268       (100)
Assets(4)                                        1,242       207           39           45          139       1,672        133
Investment in equity-basis affiliates               75        15           --           --            1          91         --
Total expenditures for additions to
   long-lived assets(5)                         $  156      $ 11         $  4          $ 9         $ 44      $  224      $  23
==================================================================================================================================
1997
Revenues from external customers(2)             $1,326      $153         $ 11          $34         $200      $1,724      $ (99)
Depreciation and amortization                       97         6            2            2            2         109          1
Equity in net income of affiliated companies        18         2           --           --           --          20         --
Profit (loss) before taxes(3)                      209        16           (4)           1            7         229       (112)
Assets(4)                                        1,252       202           31           31           96       1,612        214
Investment in equity-basis affiliates               71        15           --           --           --          86         --
Total expenditures for additions to
   long-lived assets(5)                         $  133      $ 13         $ 14          $ 2         $  7         169      $  12
==================================================================================================================================
</TABLE>

<TABLE>
<CAPTION>

                                                 CONSOLIDATED
YEARS ENDED SEPTEMBER 30                            TOTAL
- -------------------------------------------------------------
DOLLARS IN MILLIONS
<S>                                              <C>
1999
Revenues from external customers(2)                $1,695
Depreciation and amortization                         125
Equity in net income of affiliated companies           13
Profit (loss) before taxes(3)                         136
Assets(4)                                           1,842
Investment in equity-basis affiliates                  72
Total expenditures for additions to
   long-lived assets(5)                            $  172
=============================================================
1998
Revenues from external customers(2)                $1,644
Depreciation and amortization                         115
Equity in net income of affiliated companies           17
Profit (loss) before taxes(3)                         168
Assets(4)                                           1,805
Investment in equity-basis affiliates                  91
Total expenditures for additions to
   long-lived assets(5)                            $  247
=============================================================
1997
Revenues from external customers(2)                $1,625
Depreciation and amortization                         110
Equity in net income of affiliated companies           20
Profit (loss) before taxes(3)                         117
Assets(4)                                           1,826
Investment in equity-basis affiliates                  86
Total expenditures for additions to
   long-lived assets(5)                            $  181
=============================================================
</TABLE>

(1)  Unallocated and Other includes certain corporate items and eliminations
     that are not allocated to the operating segments.

(2)  Revenues from external customers for certain operating segments within
     Chemicals Group include 100% of equity affiliate sales. Specialty Fluids
     sales include transfers of ore to Performance Materials at market-based
     prices. Unallocated and Other reflects an adjustment for these equity
     affiliate sales and interoperating segment revenues and includes royalties
     paid by equity affiliates:

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30                1999           1998          1997
- --------------------------------------------------------------------------------
<S>                                   <C>           <C>          <C>
Equity affiliate sales                $ (69)        $ (92)       $  (103)
Royalties paid by equity affiliates       7             8             10
Interoperating segment revenues          (7)           (7)            (6)
- --------------------------------------------------------------------------------
   Total                              $ (69)        $ (91)       $   (99)
================================================================================
</TABLE>

(3)  Profit or loss before taxes for Unallocated and Other includes:

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30                                   1999       1998       1997
- --------------------------------------------------------------------------------------
<S>                                                       <C>        <C>        <C>
Interest expense                                          $ (46)     $ (42)     $ (43)
Gain on sale of equity securities                            10         90         --
Corporate governance costs/other expenses, net(a)           (32)       (31)       (27)
Costs related to divested businesses                         --         (5)        --
Corporate expenses incurred on behalf of the segments        (4)        (7)        (2)
Equity in net income of affiliated companies                (13)       (17)       (20)
Foreign currency transaction gains (losses)(b)               (1)        (3)        (2)
Special charges (Note B)                                    (26)       (85)       (18)
- --------------------------------------------------------------------------------------
   Total                                                  $(112)     $(100)     $(112)
======================================================================================
</TABLE>

          (a) Corporate governance costs/other expenses, net, includes corporate
     headquarters costs reduced by investment income.

          (b) Net of other hedging activity.

(4)  Unallocated and Other assets include cash, short-term investments,
     investments other than equity basis, income taxes receivable, deferred
     taxes, and headquarters' assets.

(5)  Expenditures for additions to long-lived assets include total equity and
     other investments (including available-for-sale securities), property,
     plant and equipment, and intangible assets.


50
<PAGE>   31
GEOGRAPHIC AREA INFORMATION

Sales are attributed to the United States and to all foreign countries based on
customer location (region of sale) and not on the geographic location from which
goods were shipped (region of manufacture). Revenues from external customers
attributable to an individual country, other than the United States, were not
material for disclosure. The only other country, besides the United States, with
material long-lived assets was Indonesia, with approximately 4%, 5% and 11% of
Cabot's total in 1999, 1998 and 1997, respectively. No customer represents 10%
or more of Cabot's revenues.

     Revenues from external customers and long-lived asset information by
geographic area are summarized as follows:

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30              UNITED STATES  ALL FOREIGN COUNTRIES  CONSOLIDATED TOTAL
- ----------------------------------------------------------------------------------------------
DOLLARS IN MILLIONS
<S>                                   <C>            <C>                    <C>
1999
Revenues from external customers           $ 883            $812               $ 1,695
Long-lived assets(1)                         525             638                 1,163
==============================================================================================
1998
Revenues from external customers           $ 787            $857               $ 1,644
Long-lived assets(1)                         515             650                 1,165
==============================================================================================
1997
Revenues from external customers           $ 727            $898               $ 1,625
Long-lived assets(1)                         568             626                 1,194
==============================================================================================
</TABLE>

(1)  Long-lived assets include total equity and other investments, (including
     available-for-sale securities), net property, plant and equipment, and net
     intangible assets.

NOTE R UNAUDITED QUARTERLY FINANCIAL INFORMATION
- --------------------------------------------------------------------------------

Unaudited financial results, by quarter for the fiscal years ended September 30,
1999 and 1998, are summarized below and should be read in conjunction with
Management's Discussion and Analysis of Financial Condition and Results of
Operations. Certain 1999 and 1998 items have been reclassified to reflect global
changes in Cabot's organization during the year.

<TABLE>
<CAPTION>
                                                DECEMBER    MARCH        JUNE     SEPTEMBER     YEAR
- -------------------------------------------------------------------------------------------------------
DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS
<S>                                             <C>         <C>         <C>       <C>           <C>
FISCAL 1999
Net sales                                          $408     $435        $422        $430        $1,695
Cost of sales                                       277      308         298         330         1,213
Net income                                           32       33(a)       22(b)       10(c)         97
Income applicable to common shares                 $ 31     $ 32        $ 22        $  9        $   94
========================================================================================================
Income per common share (diluted)                  $0.43    $0.45       $0.30       $0.13       $ 1.31
========================================================================================================
FISCAL 1998
Net sales                                          $434     $456        $376        $378        $1,644
Cost of sales                                       306      315         250         262         1,133
Net income                                           32       38          33(d)       19           122
Income applicable to common shares                 $ 31     $ 37        $ 32        $ 18        $  118
- --------------------------------------------------------------------------------------------------------
Income per common share (diluted)                  $0.41    $0.50       $0.44       $0.26       $ 1.61
========================================================================================================
</TABLE>

     (a)  Includes a $5 million pretax gain from the sale of K N Energy, Inc.
          common stock.


     (b)  Includes a $16 million pretax charge for cost reduction initiatives.
          Also includes a $5 million pretax gain from the sale of K N Energy,
          Inc. common stock.

     (c)  Includes a $10 million pretax charge for cost reduction initiatives.

     (d)  Includes a $60 million pretax asset impairment charge related to an
          Indonesian carbon black facility and a $25 million pretax charge
          related to a tantalum ore recovery project. Also includes a $90
          million pretax gain from the sale of K N Energy, Inc. common stock.


                                                                              51
<PAGE>   32
MANAGEMENT RESPONSIBILITY

The accompanying financial statements were prepared by Cabot Corporation in
conformity with generally accepted accounting principles. Cabot's management is
responsible for the integrity of these statements and of the data, estimates and
judgments that underlie them.

     Cabot Corporation maintains a system of internal accounting controls
designed to provide reasonable assurance that its assets are safeguarded from
loss or unauthorized use, that transactions are properly authorized and
recorded, and that financial records are reliable and adequate for public
reporting. The standard of reasonable assurance is based on management's
judgment that the cost of such controls should not exceed their associated
benefits. The system is monitored and evaluated on an ongoing basis by
management in conjunction with its internal audit staff, independent
accountants, and the Audit Committee of the Board of Directors.

     PricewaterhouseCoopers LLP, independent accountants, were engaged by Cabot
to audit these financial statements. Their audit was conducted in accordance
with generally accepted auditing standards and included a study and evaluation
of Cabot's system of internal accounting controls, selected tests of that
system, and related audit procedures as they consider necessary to render their
opinion.

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

/s/ Samuel W. Bodman

Samuel W. Bodman
Chief Executive Officer


/s/ Robert L. Culver

Robert L. Culver
Chief Financial Officer


/s/ William T. Anderson

William T. Anderson
Chief Accounting Officer



REPORT OF INDEPENDENT ACCOUNTANTS

TO THE DIRECTORS AND STOCKHOLDERS OF CABOT CORPORATION


In our opinion, the accompanying consolidated balance sheets and the related
consolidated statements of income and cash flows present fairly, in all material
respects, the financial position of Cabot Corporation and its subsidiaries at
September 30, 1999, and 1998, and the results of their operations and their cash
flows for each of the three years in the period ended September 30, 1999, in
conformity with generally accepted accounting principles. These financial
statements are the responsibility of the Company's management; our
responsibility is to express an opinion on these financial statements based on
our audits. We conducted our audits of these statements in accordance with
generally accepted auditing standards, which require that we plan and perform
the audit to obtain reasonable assurance about whether the financial statements
are free of material misstatement. An audit includes 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. We
believe that our audits provide a reasonable basis for the opinion expressed
above.


/s/ PricewaterhouseCoopers LLP


Boston, Massachusetts

October 25, 1999


52
<PAGE>   33
SELECTED FINANCIAL DATA-FIVE YEAR SUMMARY

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30                                       1999          1998          1997          1996          1995
- ------------------------------------------------------------------------------------------------------------------------------
DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS AND OTHER DATA
<S>                                                           <C>           <C>           <C>           <C>           <C>
CONSOLIDATED INCOME
Revenues:
Net sales and other operating revenues                        $ 1,695       $ 1,644       $ 1,625       $ 1,856       $ 1,830
Interest and dividend income                                        4             5             7             9            11
- ------------------------------------------------------------------------------------------------------------------------------
     Total revenues                                             1,699         1,649         1,632         1,865         1,841
- ------------------------------------------------------------------------------------------------------------------------------
Costs and expenses:
Cost of sales                                                   1,213         1,133         1,155         1,310         1,259
Selling and administrative expenses                               208           216           204           207           235
Research and technical service                                     73            80            80            79            59
Interest expense                                                   46            42            43            42            36
Special items                                                      26            85            18            --            --
Gain on sale of assets                                            (10)          (90)           --           (67)          (33)
Other charges, net                                                  7            15            15            14            29
- ------------------------------------------------------------------------------------------------------------------------------
     Total costs and expenses                                   1,563         1,481         1,515         1,585         1,585
- ------------------------------------------------------------------------------------------------------------------------------
Income before income taxes                                        136           168           117           280           256
Provision for income taxes                                        (49)          (60)          (42)          (98)         (101)
Equity in net income of affiliated companies                       13            17            20            18            17
Minority interest in net income                                    (3)           (3)           (2)           (6)           --
- ------------------------------------------------------------------------------------------------------------------------------
     Net income                                               $    97       $   122       $    93       $   194       $   172
==============================================================================================================================
COMMON SHARE DATA
Net income                                                    $  1.31       $  1.61       $  1.19       $  2.42       $  2.03
Dividends                                                        0.44          0.42          0.40          0.36          0.30
Stock prices - High                                             31.69         39.94         29.38         31.38         28.94
               Low                                              19.75         21.75         21.50         22.88         12.82
               Close                                            23.75         24.94         26.94         27.88         26.57
Average shares outstanding - millions                              73            75            77            79            84
Shares outstanding at year-end - millions                          67            67            69            72            75
CONSOLIDATED FINANCIAL POSITION
Total current assets                                          $   659       $   619       $   613       $   710       $   678
Net property, plant and equipment                               1,024           978           922           903           707
Other assets                                                      159           208           291           244           269
- ------------------------------------------------------------------------------------------------------------------------------
     Total assets                                             $ 1,842       $ 1,805       $ 1,826       $ 1,857       $ 1,654
- ------------------------------------------------------------------------------------------------------------------------------
Total current liabilities                                     $   450       $   536       $   543       $   528       $   403
Long-term debt                                                    419           316           286           322           306
Other long-term liabilities                                       267           247           269           262           260
Stockholders' equity                                              706           706           728           745           685
- ------------------------------------------------------------------------------------------------------------------------------
     Total liabilities and stockholders' equity               $ 1,842       $ 1,805       $ 1,826       $ 1,857       $ 1,654
- ------------------------------------------------------------------------------------------------------------------------------
Working capital                                               $   209       $    83       $    70       $   182       $   275
- ------------------------------------------------------------------------------------------------------------------------------
SELECTED FINANCIAL RATIOS
Income as a percentage of sales                                     6%            7%            6%           11%            9%
Return on average stockholders' equity                             13%           16%           12%           28%           26%
Net debt to capitalization ratio                                   44%           43%           43%           40%           29%
==============================================================================================================================
</TABLE>


                                                                              53

<PAGE>   1

                                                                      EXHIBIT 21


                                CABOT CORPORATION

                            Significant Subsidiaries

                            As of September 30, 1999



NAME                                         JURISDICTION
Cabot Carbon Limited                         England
Cabot G.B. Limited                           England
Cabot B.V.                                   The Netherlands
Cabot International Capital Corporation      Delaware






<PAGE>   1

                                                                      EXHIBIT 23


                       CONSENT OF INDEPENDENT ACCOUNTANTS

     We hereby consent to the incorporation by reference in the Registration
Statement on Form S-3 (No. 333-64787) and on Forms S-8 (Nos. 033-28699,
033-52940, 033-53659, 333-03683, 333-06629,333-19103, 333-19099, and 333-82353)
of Cabot Corporation of our report dated October 25, 1999 relating to the
financial statements, which appears in the Annual Report to Shareholders, which
is incorporated in this Annual Report on Form 10-K.



                                           PricewaterhouseCoopers LLP



Boston, Massachusetts
December 28, 1999




<PAGE>   1


                                                                      EXHIBIT 24

                                POWER OF ATTORNEY

         We, the undersigned directors and officers of Cabot Corporation, hereby
severally constitute and appoint Robert Rothberg and Sarah W.S. Kish, and each
of them, our true and lawful attorneys with full power to (i) sign for us and in
our names in the capacities indicated below Annual Reports on Form 10-K pursuant
to Section 13 or 15(d) of the Securities Exchange Act of 1934 of Cabot
Corporation for the fiscal year ended September 30, 1999, and any and all
amendments thereto, hereby ratifying and confirming our signatures as they may
be signed by our said attorneys, or any of them, to said Reports and to any and
all amendments to said Reports; and (ii) to file such Reports and amendments
with the Securities and Exchange Commission and with applicable stock exchanges
on behalf of Cabot Corporation.

         WITNESS our hands and common seal on the date set forth below.

SIGNATURE                          TITLE                       DATE


/s/  Kennett F. Burnes             Director and President      November 12, 1999
- ----------------------------
Kennett F. Burnes


/s/  Jane C. Bradley               Director                    November 12, 1999
- ----------------------------
Jane C. Bradley


/s/  John G.L. Cabot               Director                    November 12, 1999
- ----------------------------
John G.L. Cabot


/s/  John S. Clarkeson             Director                    November 12, 1999
- ----------------------------
John S. Clarkeson


/s/  Arthur L. Goldstein           Director                    November 12, 1999
- ----------------------------
Arthur L. Goldstein


/s/  Robert P. Henderson           Director                    November 12, 1999
- ----------------------------
Robert P. Henderson


/s/  Arnold S. Hiatt               Director                    November 12, 1999
- ----------------------------
Arnold S. Hiatt


/s/  Gautam S. Kaji                Director                    November 12, 1999
- ----------------------------
Gautam S. Kaji


<PAGE>   2

SIGNATURE                          TITLE                       DATE


/s/  Roderick C.G. MacLeod         Director                    November 12, 1999
- ----------------------------
Roderick C.G. MacLeod


/s/  John H. McArthur              Director                    November 12, 1999
- ----------------------------
John H. McArthur


/s/  John F. O'Brien               Director                    November 12, 1999
- ----------------------------
John F. O'Brien


/s/  David V. Ragone               Director                    November 12, 1999
- ----------------------------
David V. Ragone


/s/  Charles P. Siess, Jr.         Director                    November 12, 1999
- ----------------------------
Charles P. Siess, Jr.


/s/  Lydia W. Thomas               Director                    November 12, 1999
- ----------------------------
Lydia W. Thomas


/s/  Mark S. Wrighton              Director                    November 12, 1999
- ----------------------------
Mark S. Wrighton







                                       2

<TABLE> <S> <C>

<ARTICLE> 5

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<CASH>                                              35
<SECURITIES>                                         0
<RECEIVABLES>                                      326
<ALLOWANCES>                                         5
<INVENTORY>                                        259
<CURRENT-ASSETS>                                   659
<PP&E>                                           2,039
<DEPRECIATION>                                   1,015
<TOTAL-ASSETS>                                   1,842
<CURRENT-LIABILITIES>                              450
<BONDS>                                            419
                                0
                                         58
<COMMON>                                            67
<OTHER-SE>                                         581
<TOTAL-LIABILITY-AND-EQUITY>                     1,842
<SALES>                                          1,695
<TOTAL-REVENUES>                                 1,699
<CGS>                                            1,213
<TOTAL-COSTS>                                    1,213
<OTHER-EXPENSES>                                    96
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  46
<INCOME-PRETAX>                                    136
<INCOME-TAX>                                        49
<INCOME-CONTINUING>                                 97
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                        97
<EPS-BASIC>                                       1.47
<EPS-DILUTED>                                     1.31


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<RESTATED>

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1998
<PERIOD-START>                             OCT-01-1997
<PERIOD-END>                               SEP-30-1998
<CASH>                                              40
<SECURITIES>                                         0
<RECEIVABLES>                                      289
<ALLOWANCES>                                         5
<INVENTORY>                                        251
<CURRENT-ASSETS>                                   619
<PP&E>                                           1,914
<DEPRECIATION>                                     936
<TOTAL-ASSETS>                                   1,805
<CURRENT-LIABILITIES>                              536
<BONDS>                                            316
                                0
                                         61
<COMMON>                                            67
<OTHER-SE>                                         578
<TOTAL-LIABILITY-AND-EQUITY>                     1,805
<SALES>                                          1,644
<TOTAL-REVENUES>                                 1,649
<CGS>                                            1,133
<TOTAL-COSTS>                                    1,133
<OTHER-EXPENSES>                                    90
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  42
<INCOME-PRETAX>                                    168
<INCOME-TAX>                                        60
<INCOME-CONTINUING>                                122
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       122
<EPS-BASIC>                                       1.80
<EPS-DILUTED>                                     1.61


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<RESTATED>

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<CASH>                                              39
<SECURITIES>                                         0
<RECEIVABLES>                                      295
<ALLOWANCES>                                         6
<INVENTORY>                                        247
<CURRENT-ASSETS>                                   613
<PP&E>                                           1,760
<DEPRECIATION>                                     838
<TOTAL-ASSETS>                                   1,826
<CURRENT-LIABILITIES>                              543
<BONDS>                                            286
                                0
                                         66
<COMMON>                                           136
<OTHER-SE>                                         526
<TOTAL-LIABILITY-AND-EQUITY>                     1,826
<SALES>                                          1,625
<TOTAL-REVENUES>                                 1,632
<CGS>                                            1,155
<TOTAL-COSTS>                                    1,155
<OTHER-EXPENSES>                                   113
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  43
<INCOME-PRETAX>                                    117
<INCOME-TAX>                                        42
<INCOME-CONTINUING>                                 93
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                        93
<EPS-BASIC>                                       1.33
<EPS-DILUTED>                                     1.19


</TABLE>


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