AT HOME CORP
S-3/A, 1999-04-29
COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
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<PAGE>   1
 
   
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON APRIL 28, 1999
    
                                                      REGISTRATION NO. 333-72669
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
   
                               AMENDMENT NO. 2 TO
    
 
                                    FORM S-3
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                              AT HOME CORPORATION
           (EXACT NAME OF THE REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                                            <C>
                   DELAWARE                                      77-0408542
       (STATE OR OTHER JURISDICTION OF              (I.R.S. EMPLOYER IDENTIFICATION NO.)
        INCORPORATION OR ORGANIZATION)
</TABLE>
 
                              425 BROADWAY STREET
                         REDWOOD CITY, CALIFORNIA 94063
                                 (650) 569-5000
 (ADDRESS AND TELEPHONE NUMBER OF THE REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
 
                               KENNETH A. GOLDMAN
                            CHIEF FINANCIAL OFFICER
                              AT HOME CORPORATION
                              425 BROADWAY STREET
                         REDWOOD CITY, CALIFORNIA 94063
                                 (650) 569-5000
   (NAME, ADDRESS AND TELEPHONE NUMBER OF THE REGISTRANT'S AGENT FOR SERVICE)
 
                                   COPIES TO:
 
<TABLE>
<S>                                            <C>
           GORDON K. DAVIDSON, ESQ.                       JANE D. GOLDSTEIN, ESQ.
          WILLIAM R. SCHREIBER, ESQ.                            ROPES & GRAY
             THOMAS J. HALL, ESQ.                         ONE INTERNATIONAL PLACE
              FENWICK & WEST LLP                      BOSTON, MASSACHUSETTS 02110-2624
             TWO PALO ALTO SQUARE                              (617) 951-7000
         PALO ALTO, CALIFORNIA 94306
                (650) 494-0600
</TABLE>
 
        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
     From time to time after this registration statement becomes effective.
 
    If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box.  [ ]
 
    If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, check the following box.  [X]
 
    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering.  [ ]
 
    If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]
 
    If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.  [ ]
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT FILES
A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT
SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF THE
SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION, ACTING
PURSUANT TO SECTION 8(A), MAY DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
PROSPECTUS
                                  AT HOME LOGO
 
                              AT HOME CORPORATION
                    919,000 SHARES OF SERIES A COMMON STOCK
 
                           -------------------------
 
   
At Home's Series A common stock currently trades on the Nasdaq National Market.
    
   
Last reported sale price on April 27, 1999: $154.25 per share.
    
   
Trading Symbol: ATHM
    
 
                           -------------------------
 
                                  THE OFFERING
 
   
Under this prospectus, the selling stockholders named on pages 27 and 28 of this
prospectus are offering and selling shares of our Series A common stock that
they acquired as a result of our acquisition of Narrative Communications Corp.
    
 
                           -------------------------
 
   
THIS INVESTMENT INVOLVES A HIGH DEGREE OF RISK.  PLEASE CAREFULLY CONSIDER THE
"RISK FACTORS" BEGINNING ON PAGE 4 OF THIS PROSPECTUS.
    
 
NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED THESE SECURITIES OR PASSED UPON THE
ADEQUACY OR ACCURACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
 
   
                 The date of this prospectus is April   , 1999
    
 
THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. THE
SELLING STOCKHOLDERS MAY NOT SELL THESE SECURITIES UNTIL THE REGISTRATION
STATEMENT FILED WITH THE SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS
PROSPECTUS IS NOT AN OFFER TO SELL THESE SECURITIES AND IT IS NOT SOLICITING AN
OFFER TO BUY THESE SECURITIES IN ANY STATE WHERE THE OFFER OR SALE IS NOT
PERMITTED.
<PAGE>   3
 
                           -------------------------
 
                               TABLE OF CONTENTS
                           -------------------------
 
   
<TABLE>
<S>                                <C>
Prospectus Summary...............    3
Risk Factors.....................    4
Recent Events....................   18
Relationships With Our Cable
  Partners.......................   19
Use of Proceeds..................   23
Dividend Policy..................   23
Selling Stockholders.............   24
Plan of Distribution.............   30
Legal Matters....................   33
Experts..........................   33
Forward-Looking Statements.......   33
Where You Can Find More
  Information....................   33
</TABLE>
    
 
                                        2
<PAGE>   4
 
                               PROSPECTUS SUMMARY
 
   
     This summary highlights information contained elsewhere in this prospectus.
This summary is not complete and does not contain all the information you should
consider before buying shares in this offering. You should read the entire
prospectus carefully. Unless the context otherwise requires, the terms we, our,
us, the company and At Home refer to At Home Corporation, a Delaware
corporation.
    
 
                                  THE COMPANY
 
   
     We are the leading provider of broadband Internet services to consumers
over the cable television infrastructure. Our primary offering, the @Home
service, allows residential subscribers to connect their personal computers
through cable television wiring infrastructures to a high-speed Internet
backbone network developed and managed by us.
    
 
   
     Our @Media group has established the @Home launch screen as the leading
broadband Internet portal, providing a gateway to compelling multimedia and
electronic commerce offerings on the Internet. For businesses, our @Work
services provide a platform for Internet, intranet and extranet connectivity
solutions and networked business applications over both cable infrastructures
and digital telecommunications lines.
    
 
   
     See "Recent Events" for a summary of some of our recent transactions and
events. @Home, @Home Network, @Media, @Work and the @ball logo are our
registered trademarks, and @Work Internet is our service mark. This prospectus
also includes trademarks of other companies.
    
 
   
                                  THE OFFERING
    
 
   
     All of the shares offered under this prospectus were originally issued by
us to former Narrative stockholders in connection with our acquisition of
Narrative. The shares offered under this prospectus represent less than 1% of
our outstanding shares of Series A common stock as of March 31, 1999. These
shares are being offered on a continuous basis under Rule 415 of the Securities
Act of 1933 during the period commencing on the effective date of the
registration statement of which this prospectus is a part and ending on December
30, 1999, or as specified in our rights agreement dated December 30, 1998 with
the Narrative stockholders.
    
 
<TABLE>
<S>                                       <C>
Series A common stock that may be
  offered by selling stockholders.......  919,000 shares
Series A common stock to be outstanding
  after this offering...................  107,312,141 shares*
Series B common stock to be outstanding
  after this offering...................  15,400,000 shares*
Series K common stock to be outstanding
  after this offering...................  2,609,707 shares*
Use of proceeds.........................  We will not receive any proceeds.
Nasdaq National Market symbol...........  ATHM
</TABLE>
 
- -------------------------
   
* Based on the number of shares outstanding as of March 31, 1999.
    
 
                                        3
<PAGE>   5
 
                                  RISK FACTORS
 
     An investment in our common stock involves a high degree of risk. You
should carefully consider the following risk factors and the other information
in this prospectus before investing in our common stock. Our business and
results of operations could be seriously harmed by any of the following risks.
The trading price of our common stock could decline due to any of these risks,
and you may lose all or part of your investment.
 
   
     RISKS RELATED TO OUR BUSINESS
    
 
   
WE HAVE INCURRED AND EXPECT TO INCUR SUBSTANTIAL LOSSES
    
 
   
     We were incorporated in March 1995, commenced operations in August 1995,
and have incurred net losses from operations in each fiscal period since our
inception. As of December 31, 1998, we had an accumulated deficit of $227.2
million. In addition, we currently intend to increase capital expenditures and
operating expenses in order to expand our network and to market and provide our
services to a growing number of potential subscribers. As a result, we expect to
incur additional net losses before cost and amortization of distribution
agreements and amortization of goodwill and other intangible assets for at least
the next three quarters.
    
 
   
OUR BUSINESS IS UNPROVEN, AND WE MAY NOT ACHIEVE PROFITABILITY
    
 
     The profit potential of our business model is unproven. Our @Home service
was available only in portions of 59 geographic markets as of December 31, 1998
and may not achieve broad consumer or commercial acceptance. Although
approximately 2,053 primarily small- and medium-sized business organizations
have agreed to utilize @Work services as of December 31, 1998, our @Work
services may not achieve broad commercial acceptance and the current rate of
deployment for @Work services may not be sustained. We have difficulty
predicting whether the pricing models for our Internet services will prove to be
viable, whether demand for our Internet services will materialize at the prices
our cable partners charge for the @Home service or the prices we or our cable
partners charge for @Work services, or whether current or future pricing levels
will be sustainable. If these pricing levels are not achieved or sustained or if
our services do not achieve or sustain broad market acceptance, our business,
operating results and financial condition will be significantly harmed. We may
never achieve favorable operating results or profitability.
 
GROWTH OF THE @HOME SERVICE MAY BE INHIBITED BY FACTORS BEYOND OUR CONTROL
 
   
     As of December 31, 1998, we had approximately 331,000 cable modem
subscribers, including recently acquired Internet subscribers that are being
converted to the @Home service. Our ability to increase the number of
subscribers to the @Home service to achieve our business plans and generate
future revenues will depend on many factors which are beyond our control. For
instance, some of our cable partners have not achieved the subscriber levels
that we had originally anticipated. Other factors include:
    
 
   
     - the rate at which our current and future cable partners upgrade their
       cable infrastructures for two-way data services
    
 
     - our ability and the ability of our cable partners to coordinate timely
       and effective marketing campaigns with the availability of cable
       infrastructure upgrades
 
     - the success of our cable partners in marketing and installing the @Home
       service in their local cable areas
 
                                        4
<PAGE>   6
 
     - the prices that our cable partners set for the @Home service and for its
       installation
 
     - the speed at which our cable partners can complete the installations
       required to initiate service for new subscribers
 
   
     - the commercial availability of self-installable, two-way modems that
       comply with the recently adopted interface standards known as DOCSIS, and
       the success of our roll-out of these products with the @Home service
    
 
     - the quality of customer and technical support provided by us and our
       cable partners
 
     - the quality of content on the @Home service
 
   
WE NEED TO ADD SUBSCRIBERS AT A RAPID RATE FOR OUR BUSINESS TO SUCCEED, BUT WE
MAY NOT ACHIEVE OUR SUBSCRIBER GROWTH GOALS
    
 
   
     Our actual revenues or the rate at which we will add new subscribers may
differ from our forecasts. We may not be able to increase our subscriber base
enough to meet our internal forecasts or the forecasts of industry analysts or
to a level that meets the expectations of investors. The rate at which
subscribers have increased during 1998 does not necessarily indicate the rate at
which subscribers may be expected to grow in the future. In particular, while we
have recently forecast that our number of subscribers could grow to over 1.1
million by December 31, 1999 from approximately 331,000 subscribers at December
31, 1998, we may not achieve this level of subscriber growth.
    
 
   
OUR SUBSCRIBER GROWTH DEPENDS ON THE ACTIONS OF OUR CABLE PARTNERS, AND IS
LIMITED BY PRICE AND INSTALLATION CONSTRAINTS
    
 
   
     We believe subscriber growth has been constrained, and will continue to be
constrained, by the cost and time required to install the @Home service for each
residential consumer. In addition, our growth has been constrained by the rate
at which our cable partners have upgraded their systems, and most of our cable
partners are not obligated to upgrade their cable infrastructures or market the
@Home service. Moreover, the @Home service is currently priced at a premium to
many other online services, and large numbers of subscribers may not be willing
to pay a premium for the @Home service.
    
 
   
IF WE CANNOT MAINTAIN THE SCALABILITY, SPEED AND SECURITY OF OUR NETWORK,
CUSTOMERS WILL NOT ACCEPT OUR SERVICES
    
 
   
     Due to the limited deployment of our services, the ability of our network
to connect and manage a substantial number of online subscribers at high
transmission speeds is unknown. Therefore, we face risks related to our
network's ability to be scaled up to its expected subscriber levels while
maintaining superior performance. Our network may be unable to achieve or
maintain a high speed of data transmission, especially as our subscribers
increase. In recent periods, the performance of our network has experienced some
deterioration in some markets as a result of subscriber abuse of the @Home
service. While we seek to eliminate this abuse by limiting users' upstream
bandwidth, our failure to achieve or maintain high-speed data transmission would
significantly reduce consumer demand for our services. In addition, while we
have taken steps to prevent users from sharing files via the @Home service and
to protect against bulk unsolicited e-mail, public concerns about security,
privacy and reliability of the cable network, or actual problems with the
security, privacy or reliability of our network, may inhibit the acceptance of
our Internet services.
    
 
                                        5
<PAGE>   7
 
   
IF NEW TWO-WAY CABLE MODEMS ARE NOT DEPLOYED TIMELY AND SUCCESSFULLY, WE MAY NOT
BE ABLE TO GROW OUR SUBSCRIBER BASE AS QUICKLY
    
 
   
     Each of our subscribers currently must obtain a cable modem from a cable
partner to access the @Home service. The North American cable industry has
recently adopted interface standards known as DOCSIS for hardware and software
to support the delivery of data services over the cable infrastructure utilizing
compatible cable modems. Some of our cable partners have chosen to delay some
deployments of the @Home service until the widespread commercial availability of
DOCSIS-compliant cable modems. Our subscriber growth could be constrained and
our business could be significantly harmed if our cable partners choose to slow
the deployment of the @Home service further. Cable modems that are
DOCSIS-compliant are not expected to be available in significant quantities
until at least the second quarter of 1999. If our cable partners are not able to
obtain a sufficient quantity of DOCSIS-compliant modems, our growth will be
limited.
    
 
OUR MARKETS ARE HIGHLY COMPETITIVE
 
   
     The markets for consumer and business Internet services and online content
are extremely competitive, and we expect that competition will intensify in the
future. Our most direct competitors in these markets are other providers of
cable-based Internet services, national long-distance and local exchange
carriers, Internet and online service providers, and Internet content
aggregators.
    
 
   
     We compete with other cable-based services. Our competitors in the
cable-based services market are those companies that have developed their own
cable-based services and market those services to unaffiliated cable system
operators that are planning to deploy data services. In particular, Time Warner
Inc. and MediaOne Group, which recently agreed to merge with our cable partner
Comcast Corporation, have deployed high-speed Internet access services over
their existing local cable networks through their own cable-based Internet
service, Road Runner. Road Runner features a variety of proprietary content from
Time Warner Publications. Time Warner's substantial libraries of multimedia
content could provide Road Runner with a significant competitive advantage. In
June 1998, Microsoft Corporation and Compaq Computer Corporation each invested
$212.5 million in Road Runner and announced that Microsoft will provide software
for the Road Runner service and that Compaq will produce cable-ready personal
computers to be used with the service. Time Warner and MediaOne plan to market
the Road Runner service through their own cable systems as well as to other
cable system operators nationwide. Although we do not presently compete directly
with the Road Runner service for subscribers because Road Runner is offered over
different cable systems from those which carry the @Home service, we do compete
with the Road Runner service in seeking to establish distribution arrangements
with cable system operators. Furthermore, if and when our existing cable
partners cease to be subject to their exclusivity obligations, we may compete
with Road Runner and potentially other Internet service providers for
distribution over the cable systems of our cable partners. In addition, other
cable system operators, including Adelphia Communications Corporation, have
launched their own cable-based Internet services that could compete with our
services.
    
 
   
     We also compete with other high-speed telecommunications technologies. Long
distance inter-exchange carriers, such as AT&T, MCI Worldcom and Sprint have
deployed large-scale Internet access networks and sell connectivity to business
and residential customers. The regional Bell operating companies and other local
exchange carriers have also entered this field and are providing price
competitive services. Many of these carriers
    
 
                                        6
<PAGE>   8
 
   
are offering diversified packages of telecommunications services, including
Internet access, to residential customers and could bundle these services
together, which could put us at a competitive disadvantage. Many of these
competitors are offering or may soon offer technologies that will compete with
some or all of our high-speed data service offerings. These technologies include
integrated services digital network, or ISDN and asymmetric digital subscriber
line, or ADSL. In January 1998, technology companies including Compaq, Intel and
Microsoft together with numerous telecommunications providers announced an
initiative to develop a simplified version of ADSL, referred to as ADSL Lite,
which is intended to reduce the complexity and expense of installing Internet
services based on ADSL. Also, in October 1998, the International
Telecommunications Union adopted an ADSL standard called GLite. Widespread
commercial acceptance of ADSL technologies could significantly reduce the
potential subscriber base for our Internet services.
    
 
   
     We compete with other online services. We also compete with Internet
service providers that provide basic Internet access to residential consumers
and businesses, generally using existing telephone network infrastructures.
While not offering the advantages of broadband access, these services are widely
available and inexpensive. In addition, we compete with online service providers
such as America Online, Inc. that provide, over the Internet and on proprietary
online services, content and applications ranging from news and sports to
consumer videoconferencing. These services currently are designed for broad
consumer access over telecommunications-based transmission media, which enables
the provision of data services to the large group of consumers who have personal
computers with modems. America Online and Bell Atlantic have recently entered
into an agreement under which America Online will offer its Internet services
using Bell Atlantic's advanced digital subscriber line infrastructure. Online
service providers also provide basic Internet connectivity, ease of use and
consistency of environment. In addition to developing their own content or
supporting proprietary third-party content developers, online services often
establish relationships with traditional broadcast and print media outlets to
bundle their content into the service.
    
 
     We compete with content aggregators and Internet portals. Finally, we
compete with content aggregators and Internet portals that seek to capture
audience flow by providing ease-of-use and offering content that appeals to a
broad audience. Leading companies in this area include America Online, Yahoo!
Inc. and Lycos, Inc. In this market, competition affects existing and potential
relationships with both content providers and subscribers. The principal bases
of competition in attracting content providers include quality of demographics,
audience size, cost-effectiveness of the medium and ability to create
differentiated experiences using aggregator tools. The principal bases of
competition in attracting subscribers include richness and variety of content
and ease of access of the desired content. Many online service providers, such
as America Online, have the advantage of large customer bases, industry
experience, many content partnerships and significant resources.
 
     Many of our competitors have more resources than we do. Many of our
competitors and potential competitors have substantially greater financial,
technical and marketing resources, larger subscriber bases, longer operating
histories, greater name recognition and more established relationships with
advertisers and content and application providers than we do. These competitors
may be able to undertake more extensive marketing campaigns, adopt more
aggressive pricing policies and devote substantially more resources to
developing Internet services or online content than we could. We may not be able
to compete successfully against current or future competitors, and competitive
pressures could significantly harm us. Further,
 
                                        7
<PAGE>   9
 
as a strategic response to changes in the competitive environment, we and our
cable partners may make pricing, service or marketing decisions or enter into
acquisitions or new ventures that could significantly harm us.
 
   
OUR DEPENDENCE ON OUR NETWORK EXPOSES US TO A SIGNIFICANT RISK OF SYSTEM FAILURE
    
 
     Our operations are dependent upon our ability to support our highly complex
network infrastructure and avoid damage from fires, earthquakes, floods, power
losses, telecommunications failures and similar events. The occurrence of a
natural disaster or other unanticipated problem at our network operations center
or at a number of our regional data centers could cause interruptions in our
services. Additionally, failure of our cable partners or companies from which we
obtain data transport services to provide the data communications capacity that
we require, for example as a result of natural disaster, or operational
disruption, could cause interruptions in the services we provide. Any damage or
failure that causes interruptions in our operations could harm our business.
 
   
YEAR 2000 ISSUES COULD AFFECT THE PERFORMANCE OF OUR SYSTEMS
    
 
     If our internal and network information systems do not correctly recognize
and process date information beyond the year 1999, we may not be able to conduct
operations. To address these Year 2000 issues, we and our majority shareholder,
TCI, have initiated a comprehensive program to address Year 2000 readiness in
our systems and with our customers' and suppliers' systems. The program has been
designed to gather information regarding the Year 2000 compliance of products
and services that we require to deploy our residential and commercial Internet
services. Under the program, assessment and remediation are proceeding in
tandem, and we intend to have our critical systems in Year 2000 compliance by
June 30, 1999. These activities encompass all major categories of systems that
we use, including network management, customer service and business operations.
The costs incurred to date related to the program have not been material. We
currently expect that the total cost of our Year 2000 readiness program will not
exceed $750,000 in 1999. The total cost estimate does not include potential
costs related to any customer or other claims or the costs of internal software
or hardware replaced in the normal course of business. The total cost estimate
is based on the current assessment of our Year 2000 readiness needs and is
subject to change as the program proceeds.
 
     As part of our normal course of operations, we are currently in the process
of transitioning to or implementing new computer software for our accounting,
billing, network management, human resources and other management information
systems. We are assessing and testing these systems for Year 2000 compliance and
will implement changes to these systems, if necessary. The successful
implementation of these new systems is crucial to the efficient operation of our
business. However, we may not implement our new systems in an efficient and
timely manner, and the new systems may not be adequate to support our
operations. Problems with installation or initial operation of the new systems
could cause substantial difficulties in operations planning, business management
and financial reporting, which could significantly harm our business. The cost
of bringing our new systems into Year 2000 compliance, if necessary, is not
expected to have a material effect on our financial condition or results of
operations.
 
     We have also initiated formal communications with many of our significant
suppliers to determine the extent to which we are vulnerable to these suppliers'
failure to remedy their own Year 2000 issues. We have already received
assurances of Year 2000 compliance from a number of those suppliers. Most of the
suppliers have no contractual obligations
 
                                        8
<PAGE>   10
 
under existing contracts to provide us with this information. We are taking
steps with respect to new supplier agreements to seek assurance that the
suppliers' products and internal systems are Year 2000 compliant. Despite these
assurances, we may still experience supplier-related Year 2000 problems.
 
   
     Although we currently expect that the Year 2000 issue will not pose
significant operational problems, delays in the implementation of new
information systems or a failure to fully identify all Year 2000 dependencies in
our existing system and in the systems of our suppliers could harm our business.
Therefore, we are developing, but do not yet have, contingency plans for
continuing operations in the event these problems arise.
    
 
OUR LIMITED EXPERIENCE WITH INTERNATIONAL EXPANSION MAY PREVENT US FROM GROWING
OUR BUSINESS OUTSIDE THE UNITED STATES
 
     A key component of our strategy is expansion into international markets. To
date, we have developed distribution relationships only with United States,
Canadian and Dutch cable system operators. We have extremely limited experience
in developing localized versions of our products and services and in developing
relationships with international cable system operators. We may not be
successful in expanding our product and service offerings into foreign markets.
In addition to the uncertainty regarding our ability to generate revenues from
foreign operations and expand our international presence, we face specific risks
related to providing Internet services in foreign jurisdictions, including:
 
     - regulatory requirements, including the regulation of Internet access
 
     - legal uncertainty regarding liability for information retrieved and
       replicated in foreign jurisdictions
 
     - potential inability to use European customer information due to new
       European governmental regulations
 
OUR BUSINESS MAY BE IMPACTED BY CABLE UNBUNDLING PROPOSALS AND OTHER GOVERNMENT
REGULATION AND LEGAL UNCERTAINTIES
 
   
     Federal regulation could harm our business. Currently, our services are not
directly subject to regulations of the Federal Communication Commission or any
other federal or state communications regulatory agency. However, changes in the
regulatory environment relating to the Internet market, including regulatory
changes that affect telecommunications costs, limit usage of subscriber-related
information or increase the likelihood or scope of competition from the regional
Bell operating companies or other telecommunications companies, could affect our
pricing or ability to market our services successfully. For example, regulation
of cable television rates may affect the speed at which our cable partners
upgrade their cable systems to carry our services. Similarly, legislation
considered in the last Congress, which would have restricted the use of
subscriber information by interactive computer services for marketing and other
purposes, could harm the marketing of our services or our revenue from
advertising.
    
 
   
     Local franchise authorities could seek to regulate our services. Many of
our United States cable partners' local cable affiliates have elected to
classify the provision of the @Home service as additional cable services under
their respective local franchise agreements, and to pay franchise fees under
those agreements. Local franchise authorities may attempt to subject cable
systems to higher or other franchise fees or taxes or otherwise require cable
operators to obtain additional franchises in connection with their distribution
of the @Home service. There are thousands of franchise authorities, and it
    
 
                                        9
<PAGE>   11
 
would be difficult or impossible for us or our cable partners to operate under a
unified set of franchise requirements.
 
   
     The FCC could require our cable partners to grant our competitors access to
the cable infrastructure. America Online, MindSpring Enterprises, Inc.,
Consumers Union and other parties have requested the FCC to require cable
operators to provide Internet and online service providers with unbundled access
to the cable infrastructure. If the FCC were to require third-party access to
the cable infrastructure, Internet and online service providers could
potentially provide services over the cable infrastructure of our cable partners
that compete with our services. If the FCC or another governmental agency were
to classify our cable partners as common carriers of Internet services, or if
they were to seek this classification as a means of protecting themselves
against liabilities, our rights as the exclusive residential high-speed Internet
service provider over the systems of our United States cable partners could be
lost. In addition, if we or our United States cable partners were classified as
common carriers, these cable partners could be subject to government-regulated
tariff schedules for the amounts they could charge for our services.
    
 
     Local agencies may require third party access. The third party access issue
has also been raised in proceedings before local governments. Portland and
Multnomah County, Oregon have imposed a third-party access requirement on TCI as
a condition of its merger with AT&T. AT&T and TCI have challenged this action in
Federal District Court. Other municipalities, including Los Angeles, are
considering imposing third-party access requirements on cable operators. This
issue is likely to be raised in franchise renewal proceedings and in connection
with transfers of cable systems between cable operators.
 
     Canadian regulation could affect our business. Rogers and Shaw have
informed us that, due to Canadian regulations, they are required to provide
access to their respective networks to third-party Internet service providers.
Although no third party currently uses Rogers' or Shaw's networks for the
purpose of offering Internet services, these Canadian regulations preclude us
from having an exclusive contractual right to access these networks.
 
     Deregulation of telephone companies could enhance their ability to compete
against our service. The FCC also is considering whether to provide the Bell
operating companies and other incumbent local exchange carriers with significant
relief from existing access, resale, unbundling, pricing, and cost recovery
rules and policies. This relief, which would ignore local access and transport
boundaries, would be designed to encourage the deployment and operations by
these carriers of high-capacity, packet-switched networks and other advanced
telecommunications facilities and related services, including Internet access
services. Deregulation of telephone company advanced services could enhance the
ability of these companies to compete against the delivery of @Home's services
by our cable partners.
 
WE COULD FACE LIABILITY FOR DEFAMATORY OR INDECENT CONTENT
 
   
     Claims could be made against Internet and online service providers under
both United States and foreign law for defamation, negligence, copyright or
trademark infringement, or other theories based on the nature and content of the
materials disseminated through their networks. Several private lawsuits seeking
to impose this liability are currently pending. In addition, legislation has
been proposed that imposes liability for or prohibits the transmission over the
Internet of indecent content. The imposition upon Internet and online service
providers of potential liability for information carried on or disseminated
through their systems could require us to implement measures to reduce our
exposure to
    
 
                                       10
<PAGE>   12
 
this liability. This may require that we expend substantial resources or
discontinue service or product offerings. The increased attention focused upon
liability issues as a result of these lawsuits and legislative proposals could
impact the growth of Internet use. Furthermore, some foreign governments, such
as Germany, have enacted laws and regulations governing content distributed over
the Internet that are more strict than those currently in place in the United
States. One or more of these factors could significantly harm our business.
 
   
     RISKS RELATED TO OUR RELATIONSHIPS WITH OUR CABLE PARTNERS
    
 
   
WE DEPEND ON OUR CABLE PARTNERS TO UPGRADE TO THE TWO-WAY CABLE INFRASTRUCTURE
NECESSARY TO SUPPORT THE @HOME SERVICE; THE AVAILABILITY AND TIMING OF THESE
UPGRADES ARE UNCERTAIN
    
 
   
     Transmission of the @Home service and cable-based @Work services depends on
the availability of high-speed two-way hybrid fiber coaxial cable
infrastructure. However, only a portion of existing cable plant in the United
States and in some international markets has been upgraded to two-way hybrid
fiber coaxial cable, and even less is capable of high-speed two-way
transmission. As of December 31, 1998, approximately 23% of our North American
cable partners' cable infrastructure is capable of delivering the @Home service.
Our cable partners have announced and begun to implement major infrastructure
investments in order to deploy two-way hybrid fiber coaxial cable. However,
these investments have placed a significant strain on the financial, managerial,
operating and other resources of our cable partners, most of which are already
highly leveraged. Therefore, these infrastructure investments have been, and we
expect will continue to be, subject to change, delay or cancellation. Although
our commercial success depends on the successful and timely completion of these
infrastructure upgrades, most of our cable partners are under no obligation to
upgrade systems or to introduce, market or promote our services. The failure of
our cable partners to complete these upgrades in a timely and satisfactory
manner, or at all, would prevent us from delivering high-performance Internet
services and would significantly harm our business.
    
 
   
OUR CABLE PARTNERS ARE NOT GENERALLY OBLIGATED TO CARRY OUR SERVICES, AND THE
EXCLUSIVITY OBLIGATIONS THAT PREVENT THEM FROM CARRYING COMPETING SERVICES MAY
BE TERMINATED
    
 
   
     Our cable partners are subject to exclusivity obligations that prohibit
them from obtaining high-speed, greater than 128 kilobits per second,
residential consumer Internet services from any source other than us. However,
most of our cable partners are under no affirmative obligation to carry any of
our services, and the exclusivity obligations of our principal cable partners,
TCI, Comcast, Cox and Cablevision, expire on June 4, 2002, and may be terminated
sooner under some circumstances. For example, our principal cable partners may
terminate all their exclusivity obligations upon a change in law that materially
impairs some of their rights. Also, Comcast or Cox may terminate all exclusivity
obligations of our principal cable partners at any time if there is a change of
control of TCI that results in the incumbent directors of TCI no longer
constituting a majority of TCI's board within 12 months after the change of
control. AT&T, TCI, Comcast and Cox have agreed, however, that AT&T's
acquisition of TCI did not constitute a change of control under the terms of
their original agreement.
    
 
   
     Depending on their subscriber penetration rates, as of June 4, 1999 and as
of each anniversary of that date, Cox or Comcast has the right to terminate the
exclusivity provisions of our principal cable partners if AT&T and its
affiliates do not meet @Home
    
 
                                       11
<PAGE>   13
 
   
subscriber penetration levels. On June 4, 1999, we expect that Cox will have
this right, but Cox has agreed to waive this right for 1999 so long as proposed
governance changes are approved by our stockholders prior to July 22, 1999. Our
board approved these governance changes on April 16, 1999. We are submitting the
proposed changes to our stockholders at our 1999 annual meeting of stockholders.
Our stockholders agreement requires AT&T, Comcast and Cox to vote their shares
in favor of the changes. These governance changes will generally require board
action to be approved by a majority of our board, including the board
representatives of AT&T and either Cox or Comcast. In addition, as further
consideration for Cox's waiver of its right to terminate exclusivity as of June
4, 1999, AT&T has agreed to increase its subscriber acquisition goal for the
next twelve months above its current goal for that period. Termination the
exclusivity obligations by Cox or Comcast could significantly harm our business
and cause an immediate drop in our stock price.
    
 
   
     Finally, Comcast may terminate its own exclusivity obligations upon its
election after June 4, 1999 if it permits a portion of its equity in us to be
repurchased by us at Comcast's original cost. Comcast has informed us that it
has entered into an agreement with Microsoft Corporation under which Microsoft
can require Comcast to terminate its exclusivity obligations after June 4, 1999.
Although Microsoft has stated in the agreement that it has no present intention
to do so, Microsoft may be more likely than Comcast to terminate Comcast's
exclusivity obligations.
    
 
   
WE ARE CONTROLLED BY TCI AND AT&T
    
 
   
     TCI, which recently merged with AT&T, controls approximately 71% of our
voting power and currently has the power to elect a majority of our board
members and to control all matters requiring the approval of our stockholders.
TCI's Series B common stock carries ten votes per share and gives TCI the right
to elect five Series B directors, one of which is designated by Comcast and one
of which is designated by Cox. Currently, four of our 10 directors are
directors, officers or employees of TCI or its affiliates, including AT&T. Under
our current corporate governance structure, as long as TCI owns at least
7,700,000 shares of our Series B common stock and holds a majority of our voting
power, our board may take action only if approved by the board and by a majority
of the Series B directors, three of the five of which are designees of TCI. This
allows TCI to block actions of our board, even through the TCI directors may not
then constitute a majority of the board. In addition, TCI can expand the board
at any time and fill the vacancies with TCI designees to control a majority of
the board. After our 1999 stockholder's meeting, if the proposed governance
changes are adopted, TCI will no longer have the ability to expand the board and
fill vacancies, and approval of at least 75%, or four of the five, of our Series
B directors will be required for most board actions. As a result of the proposed
governing changes we will not be able to take any corporate actions without the
approval of TCI's Series B directors and one, or in some cases both, of the
directors designated by Comcast and Cox.
    
 
     Notwithstanding these provisions, all of our directors owe fiduciary duties
to our stockholders. AT&T now owns TCI and therefore controls us. Even if and
when we complete the Excite merger, TCI or AT&T will continue to own more than
50% of our voting power.
 
                                       12
<PAGE>   14
 
   
WE DEPEND ON TCG FOR LOCAL TELECOMMUNICATIONS SERVICES FOR OUR @WORK SERVICES
    
 
   
     We depend on TCG, which is owned by AT&T, to provide local
telecommunications services and co-location within TCG's facilities on favorable
economic terms. This relationship enables us to provide @Work services to an
entire metropolitan area in which TCG has facilities. If we were required to
obtain comparable telecommunications services from local exchange carriers, we
would effectively be limited to providing @Work services to commercial customers
within a ten-mile radius of one of our points of presence. As a result, we would
be required to build multiple points of presence to service an entire
metropolitan area, which would substantially increase our capital costs to enter
new markets and which could make market entry uneconomical. If we were required
to pay standard local exchange carrier rates, the ongoing operating costs for
our @Work services would be substantially higher. The loss of our strategic
relationship with TCG would significantly harm our ability to deploy our @Work
services. In addition, TCG has acquired a provider of Internet-related services
to businesses and corporate customers and will compete directly with the @Work
Internet service. To the extent TCG acquires or enters into strategic
relationships with other Internet service providers, TCG may reduce its support
of the @Work services. Although there are alternative suppliers for TCG's
services, it could take a significant period of time for us to establish similar
relationships, and equivalent terms might not be available.
    
 
WE MAY FACE ADDITIONAL COMPETITION FROM AT&T
 
   
     AT&T operates businesses that could compete with our services,
notwithstanding any exclusivity obligations that may apply to it due to its
ownership of TCI. First, AT&T operates a consumer Internet service known as AT&T
WorldNet. Although AT&T WorldNet is currently a telephone dial-up service that
does not utilize broadband technologies, AT&T may be able to use non-cable-based
data transport mechanisms to offer high-speed residential Internet services that
compete with our @Home service. Second, AT&T owns TCG, which operates an
Internet service for business customers that competes with our @Work service.
Our @Work business depends to a significant extent on our agreement with TCG for
local access telecommunications services. If TCG ceases to cooperate with us,
our @Work business would be harmed. Because our @Work business is not subject to
the cable partners' exclusivity obligations, AT&T or TCG are not limited in
their ability to compete with our @Work business. In addition, AT&T and Time
Warner recently announced the formation of a significant strategic relationship
that will include a joint venture to offer AT&T-branded cable telephony service
to residential and small business customers over Time Warner's existing cable
television systems in 33 states. The relationship between AT&T and Time Warner
could ultimately extend to other broadband services, including cable Internet
services, that compete with our @Home service. AT&T may take actions that
benefit TCG, WorldNet or other services of AT&T or other parties to our
detriment.
    
 
   
WARRANTS ISSUED TO OUR CABLE PARTNERS MAY RESULT IN ADDITIONAL DILUTION TO OUR
STOCKHOLDERS
    
 
   
     We have entered into agreements with Cablevision Systems Corporation,
Rogers, Shaw and other cable partners under which we have issued warrants to
purchase a total of 23,619,036 shares of our Series A common stock. Under these
agreements, warrants to purchase 12,386,125 shares of our Series A common stock
at an average price of $2.26 per share were exercisable as of December 31, 1998.
To the extent that Cablevision, Rogers, Shaw or other cable partners become
eligible to and exercise their warrants, our stockholders would experience
substantial dilution. We also may issue additional stock, or
    
 
                                       13
<PAGE>   15
 
   
warrants to purchase stock, at prices less than fair market value in connection
with efforts to expand distribution of the @Home service.
    
 
     RISKS RELATING TO THE PROPOSED MERGER WITH EXCITE, INC.
 
   
WE WILL ISSUE A FIXED RATIO OF 1.0419 PRE-SPLIT SHARES OF OUR SERIES A COMMON
STOCK PER EXCITE SHARE EVEN IF THERE ARE CHANGES IN THE MARKET VALUE OF EXCITE
COMMON STOCK OR OUR SERIES A COMMON STOCK BEFORE THE CLOSING OF THE MERGER
    
 
     There will be no adjustment to this exchange ratio if the market price of
either Excite common stock or our Series A common stock fluctuates. The specific
dollar value of our Series A common stock that Excite stockholders will receive
upon completion of the merger will depend on the market value of our Series A
common stock at the time of the merger. The share prices of both Excite common
stock and our Series A common stock are subject to price fluctuations in the
market for publicly-traded equity securities and have each experienced
significant volatility. We cannot predict the market prices for either Excite
common stock or our Series A common stock at any time before the completion of
the merger or the market price for our Series A common stock after the
completion of the merger.
 
   
OUR PRO FORMA ACCOUNTING FOR THE EXCITE MERGER MAY CHANGE
    
 
   
     We have allocated the total estimated purchase price for the Excite merger
on a preliminary basis to assets and liabilities based on our best estimates of
the fair values of these assets and liabilities, with the excess costs over the
net assets acquired allocated to goodwill and other intangible assets. This
allocation is subject to change pending a final analysis of the fair values of
the assets acquired and liabilities assumed. The impact of these changes could
be material to our future results of operations.
    
 
   
WE WILL FACE TECHNICAL, OPERATIONAL AND STRATEGIC CHALLENGES THAT MAY PREVENT US
FROM SUCCESSFULLY INTEGRATING EXCITE WITH US
    
 
     The merger involves risks related to the integration and management of
acquired technology, operations and personnel. Our integration of Excite will be
a complex, time consuming and expensive process and may disrupt our business if
not completed in a timely and efficient manner. Following the merger, we must
operate as a combined organization utilizing common information and
communication systems, operating procedures, financial controls and human
resources practices. We and Excite may encounter substantial difficulties, costs
and delays involved in integrating the operations of our companies, including:
 
     - potential incompatibility of business cultures
 
     - perceived adverse changes in business focus
 
     - potential conflicts in sponsor, advertising or content relationships
 
     - the loss of key employees and diversion of the attention of management
       from other ongoing business concerns
 
   
THE MERGER COULD HARM KEY THIRD PARTY RELATIONSHIPS
    
 
     The present and potential relationships of us and Excite with sponsors,
content providers, advertisers, users and subscribers may be harmed by the
proposed merger. Uncertainties regarding sponsorship, joint venture overlap and
new service development
 
                                       14
<PAGE>   16
 
following the merger may cause these parties to delay decisions regarding these
relationships. Any changes in these relationships could harm our business.
 
   
WE AND EXCITE MAY LOSE CONTRACTUAL RIGHTS DUE TO THE MERGER
    
 
     We and Excite have contracts with many suppliers, customers and other
business partners. Some of these contracts require us and Excite to obtain the
consent, waiver or approval of these other parties in connection with the
proposed merger. If consent, waiver or approval cannot be obtained, we or Excite
may lose the right to use intellectual property or other rights that are
necessary for smooth operation of the @Home or Excite services. We and Excite
have agreed to seek to secure the necessary consents, waivers and approvals.
However, we and Excite may not be able to obtain all of the necessary consents,
waivers and approvals. Failure to do so could harm our business.
 
   
     In addition, both we and Excite have granted exclusive rights to third
parties with regard to content, sponsorship or other strategic relationships.
Some of these rights conflict with rights granted by the other party. We may not
successfully resolve these conflicts and failure to do so could harm our
business.
    
 
     ADDITIONAL RISKS RELATING TO EXCITE'S BUSINESS
 
EXCITE HAS NOT BEEN AND MAY NEVER BE PROFITABLE
 
     Excite has incurred significant operating expenses since it was formed. As
of December 31, 1998, Excite had an accumulated deficit of $135.6 million.
Although Excite has had significant revenue growth in recent periods, it may not
be able to sustain this growth in future periods. Excite may never achieve
profitability.
 
   
EXCITE MAY NO LONGER RECEIVE REVENUES AND USERS FROM NETCENTER
    
 
   
     In April 1998, Excite entered into a two-year agreement with Netscape to
provide, host and sell advertising for co-branded content channels, a co-branded
Web search service and a co-branded Web directory service to be offered on
Netscape's Netcenter online service. In April 1999, Excite announced that it had
notified Netscape that it intends to terminate the agreement due to the
acquisition of Netscape by American Online, a competitor of Excite. As a result,
unless the parties renegotiate this agreement or enter into a new agreement,
this agreement will terminate during the second quarter of 1999. If this
agreement is terminated, Excite's revenues could be harmed if it does not
successfully generate new revenues to replace the revenues it was receiving
under this agreement.
    
 
   
EXCITE FACES COMPETITION FROM NETSCAPE DESPITE THE NEWCENTER AGREEMENT
    
 
   
     Most of the services offered on Netcenter compete directly with Excite's
services. Therefore, if Excite and Netscape agree to renegotiate the existing
agreement or enter into a new agreement and Excite continues to devote
significant resources towards programming or selling and marketing the
co-branded portions of Netcenter, these efforts could potentially harm Excite's
own subscriber base, harm Excite's ability to perform similar activities for the
Excite service and have the effect of helping to support a competing business.
    
 
   
     At the end of the term of the original Netscape agreement, Netscape would
have retained a license to use Excite's Internet search technology. Netscape
will not have a
    
 
                                       15
<PAGE>   17
 
   
license to Excite's technology as a result of Excite's election to terminate
this agreement. However, if this provision remains in any new or renegotiated
agreement, then after the term of any new agrement expires, Netscape could
retain a license to use Excite's Internet search technology and could either use
this license to compete with Excite or sublicense Excite's Internet technology
to a third party. Either event would subject Excite to increased competition.
    
 
   
EXCITE DEPENDS ON SPONSORSHIP AGREEMENTS FOR REVENUES
    
 
   
     Excite derived approximately 25% of its 1998 advertising revenues from
third parties to provide sponsored services and placements on Excite's web
sites. These sponsorships typically last for a longer period of time than
traditional banner advertisement purchases. If these sponsorship arrangements do
not meet the advertisers' expectations as to new customers or increased sales or
brand awareness, the sponsors may not renew their arrangements with Excite. It
may also be difficult for Excite to obtain additional sponsors if potential new
sponsors compete with existing sponsors. If Excite does not renew its existing
sponsorships or obtain new sponsors, its business would be harmed.
    
 
   
PRIVACY CONCERNS REGARDING THE USAGE OF DEMOGRAPHIC INFORMATION COULD PREVENT US
AND EXCITE FROM BENEFITTING FROM SELLING TARGETED ADVERTISING
    
 
   
     Excite's and some of our services, as well as those of Excite's subsidiary
MatchLogic, use cookies to help deliver targeted advertising and help compile
demographic information about users. Cookies are bits of information on a user's
drive and are passed between a Web server and the user's Web browser. These
cookies can be placed on a user's hard drive without the user's consent or
knowledge. Due to privacy concerns, some commentators and governmental bodies
have suggested that the use of cookies be limited. In addition, many versions of
Web browsers permit users to block or delete cookies. Any reduction or
limitation in the use of cookies could prevent Excite or MatchLogic from
utilizing their ad targeting capabilities, which could result in lower
advertising rates.
    
 
   
POTENTIAL LITIGATION WITH RESPECT TO INTELLECTUAL PROPERTY RIGHTS COULD HARM
EXCITE'S BUSINESS
    
 
   
     Many parties, including competitors of Excite, are actively developing
search, indexing and related Internet technologies. Some of these parties have
taken steps to protect these technologies, and Excite believes that others will
follow. Therefore, Excite believes that disputes regarding the ownership of
these technologies are likely to arise in the future. Excite may not be able to
defend any litigation successfully. Even if successful, defending litigation can
be costly and divert management resources.
    
 
                                       16
<PAGE>   18
 
EXCITE'S MARKET IS INTENSELY COMPETITIVE
 
     Excite competes with a number of companies both for users and advertisers.
Excite expects this competition will intensify, particularly because there are
few barriers to entry in Excite's market. Excite's competitors include:
 
   
     - Web portal companies like Infoseek's Go Network, Lycos, Netscape's
       Netcenter, Yahoo!, Alta Vista, HotBot, CYNet's Snap service and LookSmart
    
 
   
     - Online service providers like America Online and Microsoft's MSN service
    
 
   
     - Large media companies like CBS, NBC, Time-Warner and USA Networks, Inc.,
       who have announced initiatives to develop Web services or partner with
       Web companies
    
 
     - Other smaller companies providing Web-based and advertising supported
       content
 
     MatchLogic competes with AdForce and indirectly with DoubleClick Inc.,
which each offer advertising solutions for advertisers and Web sites. MatchLogic
also competes with NetGravity, Inc., which provides advertising management
software.
 
     Many providers of Internet services have been entering into distribution
arrangements and other strategic relationships with other Internet service
companies or with other third parties. For example, CBS and America Online have
announced a strategic relationship. If these relationships are successful,
Excite's competitors could receive more users and page views, which could make
their services more attractive to advertisers.
 
     Excite also competes with traditional advertising media, such as print,
radio and television, for a share of advertisers' total advertising budgets. If
advertisers do not perceive Internet advertising to be as effective as
traditional media, Excite's business could be harmed.
 
EXCITE DEPENDS ON A NUMBER OF THIRD PARTY RELATIONSHIPS
 
     Excite depends on a number of third party relationships to provide users
and content for its services. Examples of some of these important relationships
include:
 
     - Relationships with respect to the positioning of Excite's service on Web
       browsers or other high-traffic Web sites
 
     - Arrangements under which third parties provide content for Excite's
       services
 
     - Arrangements under which third parties provide services such as games or
       email
 
   
     - Relationships with Internet service providers and other third parties to
       provide communications infrastructure for Excite
    
 
   
     If Excite cannot renew these relationships on favorable terms, or if these
relationships terminate, Excite would have to enter into new relationships.
Excite may not be able to replace any of its important third party relationships
on reasonable terms, if at all. If Excite cannot replace any important
relationship, it could lose users or advertisers, which could harm Excite's
revenues. Even if Excite replaces any relationships or enters into new
relationships, Excite could incur increased costs such as distribution license
fees or selling and marketing expenses in order to pay for these relationships.
    
   
    
 
                                       17
<PAGE>   19
 
   
                                 RECENT EVENTS
    
 
   
     Acquisition of Excite, Inc. On January 19, 1999, we agreed to acquire
Excite, Inc. and to issue shares of our Series A common stock, including shares
issuable upon the exercise of Excite options and warrants, valued at
approximately $7.1 billion at the time of the announcement of the acquisition.
Excite is a global Internet media company that attracts approximately 17 million
visitors monthly to its www.excite.com and www.webcrawler.com portal Web sites.
Excite is based in Redwood City, California. Under the merger agreement, we will
issue approximately 1.0419 shares of our Series A common stock in exchange for
each outstanding share of Excite common stock. As a result, assuming no exercise
of Excite or our outstanding options and warrants, former shareholders of Excite
will own approximately 30% of the outstanding shares of our Series A common
stock. The acquisition will be accounted for as a purchase and is expected to
close in the second quarter of 1999. Although our board and Excite's board have
approved the transaction, the acquisition is subject to several conditions,
including approval by both companies' stockholders.
    
 
   
     Backbone capacity contract with AT&T. On January 5, 1999, we announced that
we had entered an agreement with AT&T to create a nationwide Internet Protocol
network utilizing AT&T's backbone to cost-effectively support broadband services
throughout North America over the next 20 years. This new backbone facility,
which is scheduled to be deployed in mid-1999, represents a 100-fold increase in
our backbone capacity and initially will enable us to support up to five million
broadband users. AT&T will first provide us with 2 OC-48 channels, each with the
capacity to transport 2.5 gigabits per second of data, over a 15,000 mile
optical network. The agreement provides for significant expansion of capacity
that allows us to take advantage of the rapid evolution of data transport
technology.
    
 
   
     Accounting change for some of our warrants. Following discussions with the
staff of the Securities and Exchange Commission, we have recorded as intangible
assets and are amortizing ratably over their remaining lives amounts which were
previously expensed in connection with our Cablevision distribution agreement.
We had recorded non-cash charges to operations of $172.6 million and $74.5
million in the fourth quarter of 1997 and the first quarter of 1998 related to
the agreement. We have reversed these previously expensed amounts and recorded
the entire $247.1 million as intangible assets, which are being amortized
ratably over their remaining lives. We will carry these intangible assets in our
financial statements at the lower of its amortized cost or fair value. These
adjustments to our financial statements for the year ended December 31, 1997 and
for the first three quarters of 1998 resulted in an increase to assets and
stockholders' equity at the end of each of these periods. The reversal of the
previously recorded charges to operations, less the amortization of the
intangible asset, resulted in a decrease to our previously reported net losses
for the fourth quarter of 1997 and the first quarter of 1998 and an increase in
the previously reported net losses for the second and third quarters of 1998.
    
 
   
     Acquisition of Narrative Communications Corp. On December 30, 1998, we
acquired Narrative for approximately 1.3 million shares of Series A common
stock, including shares issuable upon the exercise of outstanding Narrative
options, valued at approximately $93.8 million at the time of the acquisition.
Narrative, a market leader in rich media advertising and direct marketing
solutions for the World Wide Web, is based in Waltham, Massachusetts and has
nearly 50 employees. Narrative had a net loss of approximately $5.7 million on
revenues of approximately $202,000 in 1997 and had a net loss of $5.8 million on
revenues of approximately $621,000 through December 30, 1998, the
    
 
                                       18
<PAGE>   20
 
   
purchase date. The acquisition was accounted for as a purchase, and
approximately $92.4 million of the purchase price was allocated to goodwill and
other intangible assets and will be amortized over the respective useful lives
of those assets, estimated to be 3.5 years. The remainder of the purchase price,
$2.7 million, was charged to operations in the fourth quarter of 1998 as
purchased in-process research and development.
    
 
   
     Offering of convertible subordinated debentures. On December 28, 1998, we
issued $437.0 million of convertible subordinated debentures in a private
offering within the United States to qualified institutional investors. The
issue price of each $1,000 debenture was $524.64, or 52.464% of principal amount
at maturity, and the effective annual interest rate on the debentures, excluding
amortization of the issuance cost, is approximately 4%. Each debenture is
convertible at the option of the holder at any time prior to maturity into 6.55
shares of our Series A common stock. The debentures mature on December 28, 2018,
and interest on the debentures at the rate of 0.5246% per year on the principal
amount due at maturity is payable semiannually commencing June 28, 1999. We
raised approximately $222.4 million of net proceeds from the offering. We intend
to use the net proceeds of the offering for general corporate purposes,
including working capital and capital expenditures, including those associated
with domestic and international expansion and additional backbone capacity. A
portion of the net proceeds also may be used to acquire or invest in
complementary businesses or products or to obtain the right to complementary
technologies.
    
 
   
                     RELATIONSHIPS WITH OUR CABLE PARTNERS
    
 
   
     The success of our business depends on our relationships with our cable
partners, most of which have agreed to provide our high-speed residential
Internet access services on an exclusive basis. In return, we have agreed not to
provide a variety of Internet services in the areas covered by our cable
partners. Our agreements with our cable partners are complex. The following is a
summary of some of the key aspects of these agreements.
    
 
   
THE EXCLUSIVITY OBLIGATIONS OF OUR CABLE PARTNERS ARE LIMITED
    
 
   
     The exclusivity obligations of our cable partners are subject to exceptions
that would permit our principal cable partners and their affiliates to engage in
some activities which could compete, directly or indirectly, with our
activities. For example, each of these cable partners and its affiliates is
permitted to:
    
 
   
     - engage in any business other than the provision of high-speed residential
       consumer Internet services, including competing with our @Work operations
    
 
   
     - maintain voting equity interests of 10% or less in public companies that
       directly compete with our @Home service and related Internet backbone
       connectivity services
    
 
   
     - acquire an interest in any business that competes with our high-speed
       residential consumer Internet services, so long as the competitive
       business is not its primary business
    
 
   
     - acquire equity securities of public companies that compete with us,
       provided that it does not control, or is not under common control with,
       these companies
    
 
   
     - operate a competing business in any cable system territory where the
       exclusivity obligations have been terminated
    
 
                                       19
<PAGE>   21
 
   
OUR CABLE PARTNERS MAY OFFER SOME SERVICES DESPITE THEIR EXCLUSIVITY OBLIGATIONS
    
 
   
     Most of our cable partners' exclusivity obligations are limited to
high-speed residential Internet services and do not extend to various excluded
services that they may offer without us. These excluded services include:
    
 
   
     - telephony services
    
 
   
     - services that are primarily work-related, such as @Work services
    
 
   
     - residential Internet services that do not use the cable partners' cable
       television infrastructures, regardless of data transmission speed
    
 
   
     - local Internet services that do not require use of an Internet backbone
       outside a single metropolitan area
    
 
   
     - services that are utilized primarily to connect students to schools,
       colleges or universities
    
 
   
     - Internet telephony, Internet video telephony or Internet video
       conferencing
    
 
   
     - limited Internet services primarily intended for display on a television
       such as some types of Internet-based digital set-top services
    
 
   
     - Internet services that are primarily downstream services where the user
       cannot send upstream commands in real-time
    
 
   
     - streaming video services that include video segments longer than 10
       minutes in duration
    
 
   
     In addition, our cable partners can engage in limited testing, trials and
similar activities with respect to businesses subject to their exclusivity
obligations. By engaging in the excluded services, most cable partners can
compete, directly or indirectly, with our activities, including our @Work
services.
    
 
   
WE ARE PROHIBITED FROM OFFERING THE EXCLUDED SERVICES
    
 
   
     Until the later of June 4, 2002 or when a principal cable partner is no
longer in compliance with its exclusivity obligations, we may not offer the
excluded services described above using a principal cable partner's cable plant,
or to residences in the geographic areas served by its cable systems, without
its consent. These restrictions apply even if we have integrated an excluded
service with the @Home service in another geographic area. In the case of
streaming video transmissions that include video segments longer than 10 minutes
in duration, we face increased obligations to our principal cable partners that
remain in compliance with their exclusivity obligations. Specifically, we have
agreed not to allow these video transmissions using their cable infrastructure,
or in the geographic areas served by their cable systems, without their consent.
Therefore, we may never have access to the cable infrastructures of our
principal cable partners for excluded services, and we must negotiate a separate
agreement, including a new revenue split, if applicable, with each of the
principal cable partners for each excluded service that we seek to provide over
their cable infrastructures.
    
 
   
WE DEPEND ON OUR CABLE PARTNERS FOR DISTRIBUTION; THIS CREATES CONFLICTS OF
INTEREST
    
 
   
     Through their cable systems, our cable partners provide the principal
distribution network for our services, and they share the revenue from the @Home
services that are derived from our subscribers. Given our contractual and
business relationships with our
    
 
                                       20
<PAGE>   22
 
   
cable partners, the interests of our cable partners may not always coincide with
our interests, and conflicts of interest concerning the split of revenues and
other matters exist.
    
 
   
     Because TCI, Cablevision, Comcast and Cox all operate cable systems that
are the primary distributors of the @Home service, situations may arise where
their interests may diverge or appear to diverge from the interests of our other
stockholders. TCI and the other principal cable partners, acting through their
board designees, have the ability to cause us to take some actions or prohibit
us from taking some actions that may be favored by other stockholders or by the
other directors who are not affiliated with our principal cable partners. Our
board, which is controlled by TCI, has the power, subject to directors'
fiduciary duties, to approve transactions in which our principal cable partners
have an interest, including amending or terminating their distribution agreement
with us or changing the revenue splits in their favor.
    
 
   
     Under the agreements under which our U.S. cable partners distribute our
services, we receive 35% of monthly fees and fees for premium services. However,
most of these agreements, including the agreement with our principal cable
partners, contain contractual most favored nation provisions, which provide that
our principal cable partners are entitled to distribution arrangements and
related services on terms at least as favorable as those obtained by any other
cable system operator. Therefore, our principal cable partners have the power,
subject to their fiduciary duties, to cause us to approve more favorable
distribution arrangements, including more favorable revenue splits, for one or
more unaffiliated cable operators in order to receive more favorable
distribution arrangements themselves and reduce our share of subscriber fees.
    
 
   
WE DEPEND ON OUR CABLE PARTNERS TO MARKET, DELIVER AND SUPPORT THE @HOME SERVICE
    
 
   
     Because subscribers to the @Home service will subscribe through a cable
partner, the cable partner will substantially control the customer relationship
with the subscriber. Each cable partner has complete discretion regarding the
pricing of the @Home service to subscribers in its territories, except for some
premium services for which we may contract directly with the subscriber, and a
cable partner could use the @Home service as a loss leader in order to increase
demand for other products or services with more attractive terms.
    
 
   
     The cable partners do not have any affirmative obligations, other than the
payment of revenue splits to us, with respect to marketing, installing and
maintaining infrastructure for, providing customer service for and billing for
the @Home service. In limited circumstances, such as a cable partner's failure
to upgrade a cable system or roll out the @Home service after it has committed
to do so, we may be entitled to cost reimbursements and to be released from some
of our exclusivity obligations, neither of which may be an effective remedy for
the failure. Our business requires a substantial rollout of the @Home service,
and if a widespread rollout does not occur, our business will not be viable.
Moreover, our cable partners have in the past experienced, and may in the future
experience, delays in installing the @Home service in areas in which it has been
introduced.
    
 
   
     Our cable partners are expected to provide general customer service to our
subscribers and, under their distribution agreements, have the option to provide
technical support, rather than utilizing our service and support capabilities.
If a cable partner elects to provide technical support, we must reimburse it for
our avoided costs, and we would have little or no control over the quality of
customer service actually provided to subscribers of the @Home service. If the
customer service and support provided by our cable partners
    
 
                                       21
<PAGE>   23
 
   
are unsatisfactory to subscribers, consumer demand for the @Home service will
likely diminish.
    
 
   
OUR CABLE PARTNERS CONTROL THE TERMS OF DISTRIBUTION OF THE @HOME SERVICE
    
 
   
     We and our cable partners have entered into agreements providing for the
distribution of the @Home service by our cable partners and their affiliates.
The economic and other terms of these agreements may be less favorable to us
than those that could have been negotiated had we been independent of our
principal cable partners. In addition, the agreements with our principal cable
partners contain provisions that permit a cable partner to change aspects of the
distribution of the @Home service without our approval. For example, a principal
cable partner has the option to provide customer service functions that we
currently provide and upon which our 35% revenue split was based. If a principal
cable partner elects to provide these services, it is also entitled to
reimbursement of costs.
    
 
   
     Similarly, the principal cable partners have rights to remove cable systems
from the approved rollout schedule or to substitute cable systems in place of
removed systems. These rights are contractual in nature and may be exercised by
the principal cable partners in their sole discretion. The exercise by the
principal cable partners of these contractual rights may significantly harm our
business. Our cable partners also control the rollout schedule of the @Home
service, and our principal cable partners hold priority rights with respect to
this rollout schedule. This priority could harm us because we may be required to
roll out our services to our principal cable partners before rolling out the
services to other cable system operators, even though the other cable system
operators may be ready to roll out the @Home service sooner or on terms more
favorable for us.
    
 
   
OUR PRINCIPAL CABLE PARTNERS CAN BLOCK ACCESS TO SOME CONTENT AND SERVICES
    
 
   
     Each principal cable partner has the right to exclude the promotion of
specified national content providers from the @Home service offered through its
cable systems, subject to an adjustment in the revenue split if the number of
exclusions exceeds a specified number. In addition, a principal cable partner
has the right to block access to indecent content, including streaming video
segments of more than ten minutes in duration, and we are obligated to help
block access to this content.
    
 
   
     We are also obligated to consult with and involve each of the principal
cable partners in the development of requirements for, design of and
introduction of enhancements, new features and new applications of the @Home
service. If principal cable partners representing a majority of the residential
subscribers who subscribe to the @Home service object to any enhancement,
feature or application, we have agreed not to implement that enhancement,
feature or application in the territories of the objecting cable partners. If
any of the cable partners exercise these rights to block access to content or
services in some territories, we may be required to devote substantial expenses
and resources to provide different content and services in different territories
and to assist them in blocking access.
    
 
   
OUR CABLE PARTNERS MAY COMPETE WITH US FOR ADVERTISING AND PROGRAMMING REVENUE
    
 
   
     While we retain 100% of the revenue from our programming of the designated
national area of the @Home service, our principal U.S. cable partners retain
100% of revenue generated from their programming of a designated local area of
the start page of the @Home service. These revenues could include advertising
fees, service fees, content provider charges, transaction fees and promotional
revenue. Accordingly, in exercising their right to program the local area, our
cable partners could place a significant amount of advertising or program
content on the @Home service for which we receive no revenues. For example,
given the
    
 
                                       22
<PAGE>   24
 
   
national or regional coverage of their operations, any of our principal cable
partners and their affiliates could strike agreements with advertisers that
could effectively result in broad-based advertising campaigns reaching
significant regions of the United States in competition with our advertising
campaigns, generating revenue only for the cable partner and its affiliates and
not for us. In Canada, we share national advertising revenue with our Canadian
cable partners.
    
 
   
OUR PRINCIPAL CABLE PARTNERS MAY DISPOSE OF THEIR CABLE SYSTEMS, WHICH WOULD
REDUCE OUR POTENTIAL SUBSCRIBER BASE
    
 
   
     Our agreements with our principal cable partners do not require that they
maintain a specified number of cable systems, subscribers or homes passed in
order to maintain their control over equity ownership of us. These principal
cable partners may dispose of a significant amount of their cable systems
without requiring that these cable systems remain subject to any exclusivity
provisions. However, to the extent that any of our principal cable partners
dispose of systems accounting for more than 20% of the number of homes passed in
its service areas as of June 4, 1996, subject to exceptions, without causing
transferred homes to remain exclusive to us, then that principal cable partner
may be required to sell a proportionate amount of its equity interest in us to
our other principal cable partners at fair market value. For example, TCI has
completed the transfer or sale of some cable systems and has announced the
proposed sale or transfer of additional cable systems and is considering various
plans and proposals that may result in the disposition of other of its cable
systems. Although TCI has informed us that it is attempting to cause some of
these transferred systems to remain subject to TCI's exclusivity obligations,
these efforts may not be successful. These dispositions could significantly harm
us if the transferred homes do not remain exclusive.
    
 
                                USE OF PROCEEDS
 
     We will not receive any proceeds from the sale of the Series A common stock
by the selling stockholders.
 
                                DIVIDEND POLICY
 
   
     We have never paid any cash dividends on our stock and we anticipate that
we will continue to retain any earnings for use in the operation of our business
and we do not currently intend to pay dividends.
    
 
                                       23
<PAGE>   25
 
                              SELLING STOCKHOLDERS
 
   
     The following table presents information with respect to the selling
stockholders and the shares of our Series A common stock that they may offer
under this prospectus. Each of the selling stockholders named below was formerly
a stockholder or warrant holder of Narrative who acquired their shares as a
result of our acquisition of Narrative. To our knowledge, none of the selling
stockholders has, or within the past three years has had, any position, office
or other material relationship with us or any of our predecessors or affiliates.
    
 
   
     The term selling stockholders includes permitted transferees, such as
assignees by will or testimony. Furthermore, Greylock Equity Limited
Partnership, the Accel entities named below and the Carlyle Entities named below
are venture capital funds which may distribute their shares to their limited
partners. These limited partners may offer and sell shares under this prospectus
as long as the terms and conditions included in their rights agreement with us
are satisfied.
    
 
   
     The share information provided in the table below is based on information
provided to us by each of the selling stockholders as of February 12, 1999. Each
of the selling stockholders is currently the beneficial owner of less than 1% of
our outstanding Series A common stock, based on 107,312,141 shares of Series A
common stock outstanding as of March 31, 1999. We calculated beneficial
ownership according to Rule 13d-3 of the Exchange Act as of this date. Under an
escrow agreement, a portion not exceeding 12% of each selling stockholder's
shares is being held in escrow. Although we list these shares as shares that may
be offered in the table below, these shares may only be offered and sold under
this prospectus if and when these shares are released from escrow and returned
to the selling stockholders. We may update, amend or supplement this prospectus
from time to time to update the disclosure in this section.
    
 
     The selling stockholders may from time to time offer and sell any or all of
the shares under this prospectus. Because the selling stockholders are not
obligated to sell shares, and because selling stockholders may also acquire
publicly traded shares of our Series A common stock, we cannot estimate how many
shares each selling stockholder will beneficially own after this offering.
 
   
<TABLE>
<CAPTION>
                                                   SHARES BENEFICIALLY
                                                      OWNED BEFORE        SHARES BEING
                      NAME                            THE OFFERING          OFFERED
                      ----                         -------------------    ------------
<S>                                                <C>                    <C>
Greylock Equity Limited Partnership(1)...........         340,692           302,630
Hilmi Ozguc(2)...................................         213,518            71,270
Scott A. Kliger(2)...............................         213,518            71,270
Accel V L.P.(3)..................................         126,663           126,663
Carlyle Venture Partners L.P.(4).................         115,826           115,826
John B. Landry(5)................................          70,197            70,197
Allison Parker(6)................................          55,614            55,614
Accel Internet/Strategic Technology Fund
  L.P.(3)........................................          16,972            16,972
Carlyle U.S. Venture Partners L.P.(4)............          15,361            15,361
Carlyle Venture Coinvestment L.L.C.(4)(7)........           9,319             9,319
Accel Investors '96 L.P.(3)......................           7,543             7,543
Ellmore C. Patterson Partners(3).................           3,457             3,457
Jamie L. Bertasi(2)..............................           2,758               921
</TABLE>
    
 
                                       24
<PAGE>   26
 
   
<TABLE>
<CAPTION>
                                                   SHARES BENEFICIALLY
                                                      OWNED BEFORE        SHARES BEING
                      NAME                            THE OFFERING          OFFERED
                      ----                         -------------------    ------------
<S>                                                <C>                    <C>
Accel Keiretsu V L.P.(3).........................           2,514             2,514
Silicon Valley Bank(8)...........................           1,776             1,776
Grant Schneider(9)(10)...........................           1,654               728
Alexandra Trevelyan(9)(10).......................           1,654             1,241
Patrick W. O'Brien(9)............................           1,448             1,448
John Puopolo(9)..................................           1,117             1,117
Jim Coloprisco(9)................................             820               820
Joanne Bryce(2)..................................             774               774
David White(9)...................................             717               717
Paul Santinelli(9)...............................             689               689
Nancy Wilson(9)..................................             622               622
Cathy Fielding(9)................................             455               455
Sarah Groark(9)..................................             346               346
Carma Makarawicz(2)(10)..........................             164               137
Wei-Meng Chee(9).................................             138               138
Lauren Chatham(9)................................             137               137
Mike Kopel(9)....................................             137               137
Mike Trinkala(9).................................              99                99
                                                        ---------           -------
          TOTALS.................................       1,206,699           919,000
                                                        =========           =======
</TABLE>
    
 
- ---------------
   
 (1) After the date of this prospectus, Greylock Equity Limited Partnership may
     distribute its shares of our Series A common stock to:
    
 
    - Henry F. McCance
   
    - Howard E. Cox, Jr.
    
   
    - David N. Strohm
    
    - William W. Helman
   
    - William S. Kaiser
    
    - Roger L. Evans
   
    - Mary H. Murphy
    
    - Barbara P. Murray
   
    - Oneonta Properties
    
    - Sherman Fairchild Foundation, Inc.
   
    - Helen C. Alexander
    
    - Emory A. Hamilton
   
    - John D. Alexander, Jr.
    
    - Caroline R. Alexander
   
    - Henrietta A. George
    
    - Dorothy A. Matz
   
    - Thomas W. Keesee, Jr.
    
    - McCance Family Limited Partnership
   
    - Ashbourne Partners III Limited Partnership
    
   
    - Henry H. Corning
    
 
   
     - Key Trust Company of Ohio, N.A., Theodore T. Jones and Latham W. Murfey,
       III, Trustees of Trust for the benefit of Alison C. Jones under agreement
       established by Edith W. Corning dated 7/25/46 as amended
    
 
                                       25
<PAGE>   27
 
     - Key Trust Company of Ohio, N.A., Edson Spencer, Jr. and David Warshawsky,
       Trustees of Trust for the benefit of Samuel D. Long under agreement
       established by Edith W. Corning dated 7/25/46 as amended
 
     - Key Trust Company of Ohio, N.A., Edson Spencer, Jr. and David Warshawsky
       Trustees of Trust for the benefit of Maud-Alison Long under agreement
       established by Edith W. Corning dated 7/25/46 as amended
 
     - Key Trust Company of Ohio, N.A., Edson Spencer, Jr. David Warshawsky
       Trustees of Trust for the benefit of Henry H. Corning under agreement
       established by Edith W. Corning dated 7/25/46 as amended
 
   
    - Michael J. Birck
    
    - Dartmouth College
    - Field Venture Partners
    - Gothic Corporation, Michael J. Birck
    - Poduska Family Limited Partnership TLP
    - The Northern Trust Company
    - Robert E. Cook
    - Gabriel Schmergel
    - Trustee of The Daisy Trust
    - John W. Brown Trust
    - Thomas H. Bruggere
    - Peter Preuss
    - Grossman Family Partnership or its nominee Saturn & Co.
    - William C. O'Neil, Jr.
    - Curt A. Rawley
    - William J. Warner
    - John M. Connolly
    - Mone Anathan, III
    - Samuel J. Gerson
    - Ronald J. Friedsam
   
    - David C. Mahoney
    
    - Tadeusz Witkowicz
    - James A. Perakis
    - Joshua Boger
    - Malcolm L. Gefter
    - Dirk I. Gates
    - Goel Family Partnership
   
    - Safi U. Qureshey, Trustee of Safi U. Qureshey Family Trust dated 5/21/84
    
    - William M. Gibson
    - Alexander V. d'Arbeloff
    - Irwin F. Smith
    - Donald K. Miller
    - Robert A. Lawrence
    - Hill and Company
    - Neil L. Thompson
    - PH Investments LLC
    - Frechette Fund, Inc.
    - PCW Fund, Inc.
    - Scaup & Co.
 
                                       26
<PAGE>   28
 
     - Massachusetts Institute of Technology
   
     - Edward H. Ladd, Trustee under agreement dated 12/15/78 or its nominee,
       Freya Fanning & Co.
    
     - M-C Partners I Limited Partnership or its nominees, A. A. Welsh & Co. and
       Atwell & Co.
    - Fleet National Bank, Trustee of Orchard Trust under agreement dated 5/1/73
    - Phemus Corporation
    - John Lillard Family Limited Partnership
    - Lillard Partners
    - Louis F. Polk, Jr. Marital Trust
    - Louis F. Polk, Jr., Trustee of Louis F. Polk, Sr. Rev. Trust dated 1/22/69
    - Paula P. Lillard, Trustee of Louis F. Polk, Sr. Rev Trust dated 1/22/69
   
    - Board of Trustees of Leland Stanford Junior University
    
    - Polk Family Partnership,
    - Brinkley S. Thorne
    - Julia L. Thorne Trust under agreement dated 9/29/65
    - Wink Thorne
    - Edwin Thorne
    - Benjamin Thorne
    - Standish Ventures III Limited Partnership
    - Snowball Trust
    - Edwin Thorne Sole Trustee
    - Jennifer Hislop
    - Gordon G. Thorne
    - Brooks Walker, Jr.
    - Brooks Walker, Jr. Trustee of M.K. Walker Trust dated 9/1/89
    - Wellington S. Henderson, Trustee of Welling S. Henderson, Jr. Revocable
      Trust dated 3/9/93
   
     - Harriett W. Henderson Trust under agreement dated 8/14/73 for the benefit
       of Charles C. Henderson
    
     - Brooks Walker III, Trustee of Walker Trust dated 12/24/74
     - Harriett W. Henderson Trust under agreement dated 8/14/73 for the benefit
       of James A. Henderson
     - Harriett W. Henderson Trust under agreement dated 8/14/73 for the benefit
       of Joan H. Henderson
     - Harriett W. Henderson Trust under agreement dated 8/14/73 for the benefit
       of Elena D. Henderson
     - Harriett W. Henderson Trust under agreement dated 8/14/73 for the benefit
       of Mark W. Henderson
     - Ann M. Hatch Revocable Trust No. 2
     - Richard Greene Trust for the benefit of Francis Timothy Hatch
     - Susanna B. Place, Trustee SMBP Trust under agreement dated 2/28/85
     - David Ayer
   
     - William Elfers
    
     - Essex Equity Limited Partnership V
   
     - Frederick H. Bruenner
    
     - David E. Place
   
     - Richard M. Place
    
 
                                       27
<PAGE>   29
 
     - Daniel S. Gregory and Richard N. Hoehn, Trustees, under instrument
       Place/Greylock Trust dated 12/27/78
     - Roger L. Evans, Trustee of Roger and Jacqueline Evans Family Trust under
       agreement dated 3/8/89
     - Stephen Bochner, Trustee Evans Children's Trust under agreement dated
       12/20/93
     - Arthur Hughes, Trustee under instrument dated 2/2/94 Helman Children's
       Trust for the benefit of Beatrice Page Helman
     - Arthur Hughes, Trustee under instrument dated 2/2/94 Helman Children's
       Trust for the benefit of William Wilson Helman V
     - Robert N. Shapiro, Trustee of Robert P. Henderson 1994 Irrevocable Trust
       dated 1/19/94
   
     - Elizabeth McCance
    
     - Thomas McCance, Jr. and Keith Jennings, Trustees under agreement dated
       11/16/76 for the benefit of Ellen L. McCance
     - Henry F. McCance, Allison J. McCance and Keith S. Jennings under
       instrument dated 12/22/93 Trustees of McCance Family Trust for the
       benefit of Ellen Lee McCance
   
     - Henry F. McCance, Allison J. McCance and Keith S. Jennings under
       instrument dated 12/22/93 Trustees of McCance Family Trust for the
       benefit of Elizabeth Ferguson McCance
    
     - Daniel Moseley, Trustee under agreement with Blodgett 1989 Family Trust
     - John B. Jessup, Trustee of Julia Thorne Trust dated 9/29/65
     - William S. Kaiser
   
     - Charles and Angela Waite
    
     - Thomas J. Watson, III
   
     - Miriam A. Gilpatric
    
     - Yale University
 
 (2) The selling stockholder is an employee of At Home, with address at: care of
     At Home Corporation, 425 Broadway Street, Redwood City, California 94063.
 
 (3) The selling stockholder is a limited partnership affiliated with Accel
     Partners, with address at: care of Accel Partners, attn: Carter Sednaoui,
     One Palmer Square, Princeton, New Jersey 08542.
 
   
 (4) The selling stockholder is a limited partnership affiliated with The
     Carlyle Group, with address at: care of The Carlyle Group, attn: Brian
     Hayhurst, 1001 Pennsylvania Avenue, N.W., Washington, D.C. 20004-2505.
    
 
 (5) Mr. Landry is the former Chairman of Narrative.
 
 (6) Ms. Parker is a former employee and co-founder of Narrative.
 
 (7) After the date of this prospectus, Carlyle Venture Coinvestment L.L.C. may
     distribute its shares of our Series A common stock to:
    - Allan M. Holt
   
    - Brian Bailey
    
    - Brian Hayhurst
   
    - Brooke Coburn
    
    - Cammack Holdings Corporation
   
    - David Henderson
    
 
                                       28
<PAGE>   30
 
    - David W. Dupree
   
    - Edward J. Mathias
    
   
    - Frank C. Carlucci
    
   
    - Frontier Ventures Corporation
    
    - Harry L. Alverson
   
    - James A. Baker, III
    
    - Jerome H. Powell
   
    - J. Mitchell Reese
    
    - Orange Crimson Holdings Corporation
   
    - Ryan Schwarz
    
    - Stupar Holdings Corporation
   
    - Sulaiman S. Mamdani
    
 
 (8) Silicon Valley Bank is currently a lender to At Home. Its address is care
     of Silicon Valley Bancshares, attn: David Jaques, 3003 Tasman Drive
     (HG100), Santa Clara, California 95054.
 
 (9) The selling stockholder formerly had an employment relationship with
     Narrative.
 
(10) The selling stockholder's beneficial ownership includes shares subject to
     options that are exercisable currently or before April 14, 1999.
 
                                       29
<PAGE>   31
 
                              PLAN OF DISTRIBUTION
 
   
     The selling stockholders will be offering and selling all shares offered
and sold under this prospectus. We will not receive any of the proceeds of the
sales of these shares. In connection with our acquisition of Narrative, we
entered into a rights agreement dated December 30, 1998 with all of the selling
stockholders. Shares may only be offered or sold under this prospectus under the
terms of the rights agreement. However, selling stockholders may resell all or a
portion of their shares in open market transactions in reliance upon Rule 144
under the Securities Act, provided they meet the criteria and conform to the
requirements of this rule. Shares may only be offered or sold under this
prospectus during the normal quarterly trading windows specified by our insider
trading policy. Each trading window typically begins on the third trading day
after we publicly report our operating results for the previous calendar quarter
and ends on the last day of the second month of each respective calendar quarter
(February, May, August and November).
    
 
   
     Who may sell and applicable restrictions. The shares may be sold directly
by the selling stockholders from time to time. The selling stockholders may
decide not to sell any of the shares offered under this prospectus, and selling
stockholders could transfer, devise or gift these shares by other means.
    
 
   
     Alternatively, the selling stockholders may from time to time offer the
shares through brokers, dealers or agents that may receive compensation in the
form of discounts, concessions or commissions from the selling stockholders
and/or the purchasers of the shares for whom they may act as agent. In effecting
sales, broker-dealers that are engaged by the selling stockholders may arrange
for other broker-dealers to participate. The selling stockholders and any
brokers, dealers or agents who participate in the distribution of the shares may
be deemed to be underwriters. Any profit on the sale of the shares by them and
any discounts, commissions or concessions received by any broker, dealers or
agents might be deemed to be underwriting discounts and commissions under the
Securities Act. To the extent the selling stockholders may be deemed to be
underwriters, the selling stockholders may be subject to statutory liabilities,
including, but not limited to, Sections 11, 12 and 17 of the Securities Act and
Rule 10b-5 under the Exchange Act. To our knowledge, there are currently no
plans, arrangements or understandings between any selling stockholders and any
broker, dealer, agent or underwriter regarding the sale of the shares by the
selling stockholders.
    
 
   
     Shares that may not be sold under this prospectus. Under an escrow
agreement dated December 30, 1998, we will hold in escrow a total of
approximately 134,647 shares that are beneficially owned by the selling
stockholders until no later than March 31, 2000. Subject to limited exceptions,
these shares may not be sold or transferred without our consent.
    
 
   
     Selling stockholders who are designated as key employees in the rights
agreement are restricted from disposing of their shares until December 30, 2001,
except that:
    
 
     - each key employee may currently dispose of up to 25% of his restricted
       shares
 
     - each key employee may dispose of up to another 25% of his restricted
       shares on and after December 30, 1999 if he is still employed by us on
       that date
 
     - each key employee may dispose of his remaining restricted shares on and
       after December 30, 2000 if he is still employed by us on that date
 
                                       30
<PAGE>   32
 
   
Each key employee may only offer or sell 25% of his restricted shares under this
prospectus.
    
 
   
     Prospectus delivery. Because selling stockholders may be deemed to be
underwriters within the meaning of Section 2(11) of the Securities Act, they
will be subject to the prospectus delivery requirements of the Securities Act.
At any time a particular offer of the shares is made, a revised prospectus or
prospectus supplement, if required, will be distributed which will disclose:
    
 
   
     - the name of the selling stockholder and of any participating
       underwriters, broker-dealers or agents
    
 
     - the aggregate amount and type of shares being offered
 
   
     - the price at which the shares were sold and other material terms of the
       offering
    
 
     - any discounts, commissions, concessions and other items constituting
       compensation from the selling stockholders and any discounts, commissions
       or concessions allowed or paid to dealers
 
   
     - that the participating broker-dealers did not conduct any investigation
       to verify the information in this prospectus or incorporated by reference
       in this prospectus
    
 
   
The prospectus supplement or a post-effective amendment will be filed with the
Securities and Exchange Commission to reflect the disclosure of additional
information with respect to the distribution of the shares. In addition, if we
receive notice from a selling stockholder that a donee or pledgee intends to
sell more than 500 shares, a supplement to this prospectus will be filed.
    
 
   
     Restrictions on manner of sales. The selling stockholders will act
independently from us in making decisions with respect to the timing, manner and
size of each sale. Sales may be made over the Nasdaq National Market. The shares
may be sold at then prevailing market prices, at prices related to prevailing
market prices or at negotiated prices. The shares may be sold according to one
or more of the following methods:
    
 
     - a block trade in which the involved broker or dealer will attempt to sell
       the shares as agent but may position and resell a portion of the block as
       principal to facilitate the transaction
 
   
     - purchases by a broker or dealer as principal and resale by the broker or
       dealer for its account as allowed by this prospectus
    
 
     - ordinary brokerage transactions and transactions in which the broker
       solicits purchasers
 
   
     - an exchange distribution under the rules of the exchange
    
 
     - face-to-face transactions between sellers and purchasers without a
       broker-dealer
 
   
     - by writing options
    
 
   
     SOME PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN TRANSACTIONS THAT
STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE OF OUR SERIES A COMMON STOCK,
INCLUDING THE ENTRY OF STABILIZING BIDS OR SYNDICATE COVERING TRANSACTIONS OR
THE IMPOSITION OF PENALTY BIDS. The selling stockholders and any other person
participating in a distribution will be subject to applicable provisions of the
Exchange Act and its rules and regulations, including
    
 
                                       31
<PAGE>   33
 
   
Regulation M. This regulation may limit the timing of purchases and sales of any
of the shares by the selling stockholders and any other person. The
anti-manipulation rules under the Exchange Act may apply to sales of shares in
the market and to the activities of the selling stockholders and their
affiliates. Furthermore, Regulation M of the Exchange Act may restrict the
ability of any person engaged in the distribution of the shares to engage in
market-making activities with respect to the particular shares being distributed
for a period of up to five business days before the distribution. All of the
foregoing may affect the marketability of the shares and the ability of any
person or entity to engage in market-making activities with respect to the
shares.
    
 
   
     Hedging and other transactions with broker-dealers. In connection with
distributions of the shares, the selling stockholders may enter into hedging
transactions with broker-dealers. In connection with these transactions,
broker-dealers may engage in short sales of the registered shares in the course
of hedging the positions they assume with selling stockholders. The selling
stockholders may also sell shares short and redeliver the shares to close out
their short positions. The selling stockholders may also enter into option or
other transactions with broker-dealers which require the delivery to the
broker-dealer of the registered shares. The broker-dealer may then resell or
transfer these shares under this prospectus. A selling stockholder may also loan
or pledge the registered shares to a broker-dealer and the broker-dealer may
sell the shares so loaned or, upon a default, the broker-dealer may effect sales
of the pledged shares under this prospectus.
    
 
     Expenses associated with registration. We have agreed to pay the expenses
of registering the shares under the Securities Act, including registration and
filing fees, printing expenses, administrative expenses and legal and accounting
fees. Each of the selling stockholders will bear its pro rata share of all
discounts, commissions or other amounts payable to underwriters, dealers or
agents as well as fees and disbursements for legal counsel retained by any
selling stockholder.
 
   
     Indemnification. In the rights agreement, we and the selling stockholders
have agreed to indemnify each other and specified other persons against some
liabilities in connection with the offering of the shares, including liabilities
arising under the Securities Act. The selling stockholders may also agree to
indemnify any broker-dealer or agent that participates in transactions involving
sales of the shares against some liabilities, including liabilities arising
under the Securities Act. In addition, Carlyle Venture Coinvestment LLC and
Greylock Equity Limited Partnership have each agreed to indemnify us against
some liabilities, including liabilities arising under the Securities Act,
related to information about selling stockholders that was provided by each of
these two parties.
    
 
   
     Prospectus updates; suspension of this offering. At any time a particular
offer of the shares is made, a revised prospectus or prospectus supplement, if
required, will be distributed. We will file this prospectus supplement or
post-effective amendment with the Securities and Exchange Commission to reflect
the disclosure of additional information with respect to the distribution of the
shares. We may suspend the use of this prospectus if we learn of any event that
causes this prospectus to include an untrue statement of a material fact or
omits to state a material fact required to be stated in the prospectus or
necessary to make the statements in the prospectus not misleading in the light
of the circumstances then existing. If this type of event occurs, a prospectus
supplement or post-effective amendment, if required, will be distributed to each
selling stockholder. Each selling stockholder has agreed not to trade shares
from the time the selling stockholder receives notice from us of this type of
event until the selling stockholder receives a prospectus supplement or
amendment. This time period will not exceed five trading days in any one
instance.
    
 
                                       32
<PAGE>   34
 
   
     Termination of this offering. The rights agreement requires that we use
commercially reasonable efforts to keep the registration statement effective
until December 30, 1999, or later in limited circumstances. Therefore, this
offering will terminate on the earlier of: (1) the expiration of this
registration period, or (2) the date on which all shares offered under this
prospectus have been sold by the selling stockholders.
    
 
   
                                 LEGAL MATTERS
    
 
   
     The validity of the issuance of the shares of common stock offered under
this prospectus will be passed upon for us by Fenwick & West LLP, Two Palo Alto
Square, Palo Alto, California 94306. Fenwick & West LLP holds an option to
purchase 6,250 shares of our Series A common stock.
    
 
   
                                    EXPERTS
    
 
   
     Ernst & Young LLP, independent auditors, have audited our consolidated
financial statements included in our Annual Report on Form 10-K for the year
ended December 31, 1998, as presented in their report, which is incorporated by
reference in this prospectus and elsewhere in the registration statement. Our
financial statements are incorporated by reference in reliance on the report of
Ernst & Young LLP given on their authority as experts in accounting and
auditing.
    
 
   
     The financial statements of Narrative incorporated in this prospectus by
reference to the audited historical financial statements included as Exhibit
99.01 of our Form 8-K/A filed on February 18, 1999 have been incorporated in
reliance on the report of PricewaterhouseCoopers LLP, independent accountants,
given on their authority as experts in auditing and accounting.
    
 
   
                           FORWARD-LOOKING STATEMENTS
    
 
   
     This prospectus contains forward-looking statements within the meaning of
Section 27A of the Securities Act and Section 21E of the Securities Exchange Act
relating to future events or financial results. These statements include
statements indicating that we believe, we expect or we anticipate that events
may occur or trends may continue, and similar statements relating to future
events or financial results. These forward-looking statements are subject to
material risks and uncertainties as indicated under the caption "Risk Factors."
Actual results could vary materially as a result of a number of factors
including those disclosed in "Risk Factors" and elsewhere in this prospectus.
    
 
                      WHERE YOU CAN FIND MORE INFORMATION
 
     The following documents that we have filed with the Securities and Exchange
Commission are incorporated by reference into this prospectus:
 
   
     - the registration statement on Form S-3 of which this prospectus is a
       part, and the exhibits and schedules filed with the registration
       statement and incorporated by reference into the registration statement
    
 
   
     - our annual report on Form 10-K for the year ended December 31, 1998, as
       amended on March 31, 1999 and April 27, 1999
    
 
     - the registration of our Series A common stock on Form 8-A filed on June
       13, 1997
 
                                       33
<PAGE>   35
 
   
     - all other reports filed under Section 13(a) or 15(d) of the Exchange Act
       since December 31, 1998, including: (1) our quarterly reports on Form
       10-Q for the fiscal quarters ended March 31, June 30 and September 30,
       1998, each as amended on February 8, 1999; (2) our current report on Form
       8-K filed on January 14, 1999, as amended on February 19, 1999; (3) our
       two current reports on Form 8-K filed on January 21, 1999; (4) our
       current report on Form 8-K filed on February 19, 1999; and (5) our
       current report on Form 8-K filed on April 18, 1999
    
 
   
     - all other information that we file with the Securities and Exchange
       Commission under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act
       after the date of this prospectus and before the termination of this
       offering
    
 
     To the extent that any statement in this prospectus is inconsistent with
any statement that is incorporated by reference, the statement in this
prospectus shall control. The incorporated statement shall not be deemed, except
as modified or superceded, to constitute a part of this prospectus or the
registration statement.
 
   
     We are subject to the informational requirements of the Securities Exchange
Act of 1934. Therefore, we file reports and other information with the
Securities and Exchange Commission. Reports, registration statements, proxy and
information statements, and other information that we have filed can be
inspected and copied at the public reference facilities maintained by the
Securities and Exchange Commission at Room 1024, 450 Fifth Street, N.W.,
Washington, D.C. 20549. You may obtain copies of this material from the Public
Reference Section of the Securities and Exchange Commission at 450 Fifth Street,
N.W., Washington, D.C. 20549 at rates prescribed by the Commission. The public
may obtain information on the operation of the Public Reference Room by calling
the Securities and Exchange Commission at 1-800-SEC-0330. The Securities and
Exchange Commission also maintains a World Wide Web site that contains reports,
proxy and information statements and other information that is filed
electronically with the Securities and Exchange Commission. This web site can be
accessed at http://www.sec.gov.
    
 
   
     We have filed with the Securities and Exchange Commission a registration
statement on Form S-3 under the Securities Act with respect to the Series A
common stock offered under this prospectus. This prospectus does not contain all
of the information in the registration statement, parts of which we have
omitted, as allowed by the rules and regulations of the Securities and Exchange
Commission. For further information with respect to us and our Series A common
stock, please refer to the registration statement. Statements contained in this
prospectus as to the contents of any contract or other document are not
necessarily complete and, in each instance, we refer you to the copy of each
contract or document filed as an exhibit to the registration statement. Copies
of the registration statement, including exhibits, may be inspected without
charge at the Securities and Exchange Commission's principal office in
Washington, D.C., and you may obtain copies from this office upon payment of the
fees prescribed by the Securities and Exchange Commission.
    
 
   
     We will furnish without charge to each person to whom a copy of this
prospectus is delivered, upon written or oral request, a copy of the information
that has been incorporated by reference into this prospectus (except exhibits,
unless they are specifically incorporated by reference into this prospectus).
You should direct any requests for copies to At Home Corporation, 425 Broadway
Street, Redwood City, California 94063, Attention: David G. Pine, Vice President
and General Counsel, telephone: (650) 569-5000.
    
   
    
 
                                       34
<PAGE>   36
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                              AT HOME CORPORATION
 
                               919,000 SHARES OF
                             SERIES A COMMON STOCK
 
                 ---------------------------------------------
                                   PROSPECTUS
                 ---------------------------------------------
 
   
     IN CONNECTION WITH THIS OFFERING, NO PERSON IS AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS. IF
THIS INFORMATION IS GIVEN OR THESE REPRESENTATIONS ARE MADE, YOU MAY NOT RELY ON
THIS INFORMATION OR THESE REPRESENTATIONS AS HAVING BEEN AUTHORIZED BY US. THIS
PROSPECTUS IS NEITHER AN OFFER TO SELL NOR A SOLICITATION OF AN OFFER TO BUY ANY
SECURITIES OTHER THAN THOSE REGISTERED UNDER THE REGISTRATION STATEMENT, NOR IS
IT AN OFFER TO SELL OR A SOLICITATION OF AN OFFER TO BUY SECURITIES WHERE AN
OFFER OR SOLICITATION WOULD BE UNLAWFUL. YOU MAY NOT IMPLY FROM THE DELIVERY OF
THIS PROSPECTUS, NOR FROM ANY SALE MADE UNDER THIS PROSPECTUS, THAT OUR AFFAIRS
ARE UNCHANGED SINCE THE DATE OF THIS PROSPECTUS OR THAT THE INFORMATION
CONTAINED IN THIS PROSPECTUS IS CORRECT AS OF ANY TIME AFTER THE DATE OF THIS
PROSPECTUS.
    
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   37
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
   
     The following table sets forth the various expenses payable by the
Registrant in connection with the sale and distribution of the securities being
registered under this registration statement. Normal commission expenses and
brokerage fees are payable individually by the selling stockholders. All amounts
are estimated except the Securities and Exchange Commission registration fee.
    
 
<TABLE>
<S>                                                           <C>
Securities and Exchange Commission registration fee.........  $25,054
Nasdaq National Market filing fee...........................   17,500
Accounting fees and expenses................................   10,000
Legal fees and expenses.....................................   30,000
Miscellaneous...............................................    7,446
                                                              -------
          Total.............................................  $90,000
                                                              =======
</TABLE>
 
ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
     As permitted by the Delaware General Corporation Law, the Registrant's
Certificate of Incorporation includes a provision that eliminates the personal
liability of its directors to the Registrant or its stockholders for monetary
damages for breach of fiduciary duty as a director, except for liability:
 
     - for any breach of the director's duty of loyalty to the corporation or
       its stockholders
 
     - for acts or omissions not in good faith or that involve intentional
       misconduct or a knowing violation of law
 
     - under Section 174 of the Delaware General Corporation Law
 
     - for any transaction from which the director derived an improper personal
       benefit
 
As permitted by Section 145 of the Delaware General Corporation Law, the
Registrant's Certificate of Incorporation further provides:
 
     - for mandatory indemnification, to the fullest extent permitted by
       applicable law, for any person who is or was a director or officer, or is
       or was serving at the request of the Registrant as a director, officer,
       employee or agent of another corporation or of a partnership, joint
       venture, trust, enterprise or nonprofit entity, including service with
       respect to employee benefit plans, against all liability and loss
       suffered and expenses (including attorneys' fees) reasonably incurred by
       such person
 
     - that the Registrant's obligation to indemnify any person who was or is
       serving at the Registrant's request as a director, officer, employee or
       agent of another corporation, partnership, joint venture, trust,
       enterprise or nonprofit entity must be reduced by any amount such person
       may collect as indemnification from such other corporation, partnership,
       joint venture, trust, enterprise or nonprofit entity
 
     - that the Registrant must advance to all indemnified parties the expenses
       (including attorney's fees) incurred in defending any proceeding provided
       that indemnified
 
                                      II-1
<PAGE>   38
 
parties (if they are directors or officers) must provide the Registrant an
undertaking to repay such advances if indemnification is determined to be
unavailable
 
     - that the rights conferred in the Certificate of Incorporation are not
       exclusive
 
     - that the Registrant may not retroactively amend the Certification of
       Incorporation provisions relating to indemnity
 
   
     The indemnification provision in the Registrant's Certificate of
Incorporation and the Indemnification Agreements entered into between the
Registrant and each of its directors and executive officers may be sufficiently
broad to permit indemnification of the Registrant's directors and officers for
liabilities arising under the Securities Act. The Registrant has also obtained
directors' and officers' liability insurance. The following documents are
incorporated by reference:
    
 
                                    DOCUMENT
 
   
     1.  Form of Fourth Amended and Restated Certificate of Incorporation of the
         Registrant filed July 16, 1997 (incorporated by reference to Exhibit
         3.06 to the Registrant's registration statement on Form S-1, File No.
         333-27323, declared effective July 11, 1997).
    
 
     2.  Form of Indemnification Agreement entered into by the Registrant with
         each of its directors and executive officers (incorporated by reference
         to Exhibit 10.09 to the Registrant's registration statement on Form
         S-1, File No. 333-27323, declared effective July 11, 1997).
 
     Certain agreements related to the Registrant's acquisition of Narrative
provide for the indemnification of the Registrant and its directors, officers
and employees from and against certain liabilities, including losses by the
Registrant and its directors, officers and employees arising out of
misrepresentations or breaches by Narrative regarding its business, and certain
liabilities of the Registrant and its directors, officers and employees arising
under the Securities Act, the Exchange Act or other federal or state laws. In
addition, the escrow agreement referenced below provides that some shares of the
Registrant's Series A common stock will be held as collateral for the indemnity
obligations of the Narrative stockholders to the Registrant and its directors,
officers and employees. The following documents are incorporated by reference:
 
                                    DOCUMENT
 
     1.  Agreement and Plan of Merger among the Registrant, Transitory
         Corporation (a subsidiary of the Registrant) and Narrative dated
         December 17, 1998 (incorporated by reference to Exhibit 2.1 to the
         Registrant's report on Form 8-K filed with the Securities and Exchange
         Commission on January 14, 1999).
 
     2.  Escrow Agreement dated December 30, 1998 among the Registrant, Charles
         M. Hazard, Jr. as representative of the Narrative stockholders and
         State Street Bank and Trust Company of California, N.A., as escrow
         agent (incorporated by reference to Exhibit 2.3 to the Registrant's
         report on Form 8-K filed with the Securities and Exchange Commission on
         January 14, 1999).
 
     3.  Rights Agreement dated December 30, 1998 between the Registrant and
         each of the Narrative stockholders (incorporated by reference to
         Exhibit 2.4 to the
 
                                      II-2
<PAGE>   39
 
Registrant's report on Form 8-K filed with the Securities and Exchange
Commission on January 14, 1999).
 
     4.  Letter Agreement dated February 9, 1999 between the Registrant and
         Carlyle Venture Coinvestment LLC (see Exhibit 99.02).
 
     5.  Letter Agreement dated February 9, 1999 between the Registrant and
         Greylock Equity Limited Partnership (see Exhibit 99.03).
 
ITEM 16. EXHIBITS.
 
   
     The following exhibits are filed with this registration statement or
incorporated into this registration statement by reference:
    
 
   
<TABLE>
<CAPTION>
    EXHIBIT
    NUMBER                           EXHIBIT TITLE
    -------                          -------------
    <C>       <S>
     2.01     Agreement and Plan of Merger among the Registrant,
              Transitory Corporation (a subsidiary of the Registrant) and
              Narrative dated December 17, 1998 (incorporated by reference
              to Exhibit 2.1 to the Registrant's report on Form 8-K filed
              with the Securities and Exchange Commission on January 14,
              1999).
     2.02     Certificate of Merger, as filed on December 30, 1998 with
              the Secretary of State of the State of Delaware
              (incorporated by reference to Exhibit 2.2 to the
              Registrant's report on Form 8-K filed with the Securities
              and Exchange Commission on January 14, 1999).
     2.03     Escrow Agreement dated December 30, 1998 among the
              Registrant, Charles M. Hazard, Jr. as representative of the
              Narrative stockholders and State Street Bank and Trust
              Company of California, N.A. as escrow agent (incorporated by
              reference to Exhibit 2.3 to the Registrant's report on Form
              8-K filed with the Securities and Exchange Commission on
              January 14, 1999).
     2.04     Rights Agreement dated December 30, 1998 between the
              Registrant and each of the Narrative stockholders
              (incorporated by reference to Exhibit 2.4 to the
              Registrant's report on Form 8-K filed with the Securities
              and Exchange Commission on January 14, 1999).
     3.01     Form of Fourth Amended and Restated Certificate of
              Incorporation of the Registrant filed July 16, 1997
              (incorporated by reference to Exhibit 3.06 to the
              Registrant's registration statement on Form S-1, File No.
              333-27323, declared effective July 11, 1997).
     3.02     Form of Second Amended and Restated Bylaws of the Registrant
              effective July 16, 1997 (incorporated by reference to
              Exhibit 3.05 to the Registrant's registration statement on
              Form S-1, File No. 333-27323, declared effective July 11,
              1997).
     3.03     Certificate of Amendment to Fourth Amended and Restated
              Certificate of Incorporation of the Registrant filed July 9,
              1998 (incorporated by reference to Exhibit 3.07 to the
              Registrant's 1998 annual report on Form 10-K/A filed with
              the Securities and Exchange Commission on March 31, 1999).
     4.01     Form of Certificate of the Registrant's Series A common
              stock (incorporated by reference to Exhibit 4.05 to the
              Registrant's registration statement on Form S-1, File No.
              333-27323, declared effective July 11, 1997).
</TABLE>
    
 
                                      II-3
<PAGE>   40
 
   
<TABLE>
<CAPTION>
    EXHIBIT
    NUMBER                           EXHIBIT TITLE
    -------                          -------------
    <C>       <S>
     4.02     Amended and Restated Stockholders' Agreement, dated August
              1, 1996, among the Registrant and the parties indicated
              therein, as amended on May 15, 1997 (incorporated by
              reference to Exhibit 4.04 to the Registrant's registration
              statement on Form S-1, File No. 333-27323, declared
              effective July 11, 1997).
     5.01     Opinion of Fenwick & West LLP regarding legality of the
              securities being registered.*
    23.01     Consent of Fenwick & West LLP (included in Exhibit 5.01).*
    23.02     Consent of Ernst & Young LLP, Independent Auditors.
    23.03     Consent of PricewaterhouseCoopers LLP, Independent
              Accountants.
    24.01     Power of attorney.*
    99.01     Press release issued by the Registrant on December 18, 1998
              announcing its agreement to acquire Narrative (incorporated
              by reference to Exhibit 99.1 to the Registrant's report on
              Form 8-K filed with the Securities and Exchange Commission
              on January 14, 1999).
    99.02     Letter Agreement dated February 9, 1999 by and between the
              Registrant and Carlyle Venture Coinvestment LLC.*
    99.03     Letter Agreement dated February 9, 1999 by and between the
              Registrant and Greylock Equity Limited Partnership.*
</TABLE>
    
 
- ---------------
* Previously filed.
 
ITEM 17. UNDERTAKINGS.
 
     The Registrant undertakes:
 
          (1) To file, during any period in which offers or sales are being
     made, a post-effective amendment to this registration statement:
 
             (a) to include any prospectus required by Section 10(a)(3) of the
        Securities Act;
 
             (b) to reflect in the prospectus any facts or events arising after
        the effective date of the registration statement (or the most recent
        post-effective amendment thereof) which, individually or in the
        aggregate, represent a fundamental change in the information set forth
        in the registration statement; and
 
             (c) to include any material information with respect to the plan of
        distribution not previously disclosed in the registration statement or
        any material change to such information in the registration statement;
 
        provided, however, that paragraphs (1)(a) and (1)(b) above do not apply
        if the information required to be included in a post-effective amendment
        by those paragraphs is contained in periodic reports filed with or
        furnished to the Commission by Registrant pursuant to Section 13 or
        Section 15(d) of the Exchange Act that are incorporated by reference in
        the registration statement.
 
          (2) That, for the purpose of determining any liability under the
     Securities Act, each such post-effective amendment shall be deemed to be a
     new registration statement relating to the securities offered therein, and
     the offering of such securities at the time shall be deemed to be the
     initial bona fide offering thereof.
 
                                      II-4
<PAGE>   41
 
          (3) To remove from registration by means of a post-effective amendment
     any of the securities being registered which remain unsold at the
     termination of the offering.
 
          (4) That, for purposes of determining any liability under the
     Securities Act, each filing of Registrant's annual report pursuant to
     Section 13(a) or Section 15(d) of the Exchange Act (and, where applicable,
     each filing of an employee benefit plan's annual report pursuant to Section
     15(d) of the Exchange Act) that is incorporated by reference in the
     registration statement shall be deemed to be a new registration statement
     relating to the securities offered therein, and the offering of such
     securities at that time shall be deemed to be the initial bona fide
     offering thereof.
 
          (5) Insofar as indemnification for liabilities arising under the
     Securities Act may be permitted to directors, officers and controlling
     persons of the Registrant pursuant to the provisions discussed in Item 6
     hereof, or otherwise, the Registrant has been advised that in the opinion
     of the Securities and Exchange Commission such indemnification is against
     public policy as expressed in the Securities Act and is, therefore,
     unenforceable. If a claim for indemnification against such liabilities
     (other than the payment by the Registrant of expenses incurred or paid by a
     director, officer or controlling person of the Registrant in the successful
     defense of any action, suit or proceeding) is asserted by such director,
     officer or controlling person in connection with the securities being
     registered under this registration statement, the Registrant will, unless
     in the opinion of its counsel the matter has been settled by controlling
     precedent, submit to a court of appropriate jurisdiction the question
     whether such indemnification by it is against public policy as expressed in
     the Securities Act and will be governed by the final adjudication of such
     issue.
 
                                      II-5
<PAGE>   42
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933, the Registrant,
At Home Corporation, certifies that it has reasonable grounds to believe that it
meets all of the requirements for filing on Form S-3 and has duly caused this
Amendment No. 2 to the registration statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in Redwood City, State of California, on
this 28th day of April, 1999.
    
 
                                              AT HOME CORPORATION
 
                                              By: /s/ THOMAS A. JERMOLUK
                                              ----------------------------------
                                                      Thomas A. Jermoluk
                                                   Chairman, President and
                                                   Chief Executive Officer
 
   
     Pursuant to the requirements of the Securities Act of 1933, this Amendment
No. 2 to the registration statement has been signed by the following persons in
the capacities and on the dates indicated.
    
 
   
<TABLE>
<CAPTION>
         SIGNATURE                         TITLE                      DATE
         ---------                         -----                      ----
<S>                             <C>                             <C>
PRINCIPAL EXECUTIVE OFFICER:
 
  /s/ THOMAS A. JERMOLUK*       President, Chief Executive      April 28, 1999
- ----------------------------    Officer and Chairman of the
     Thomas A. Jermoluk         Board
 
PRINCIPAL FINANCIAL OFFICER:
 
  /s/ KENNETH A. GOLDMAN*       Senior Vice President and       April 28, 1999
- ----------------------------    Chief Financial Officer
     Kenneth A. Goldman
 
PRINCIPAL ACCOUNTING
OFFICER:
 
   /s/ ROBERT A. LERNER*        Corporate Controller            April 28, 1999
- ----------------------------
      Robert A. Lerner
 
ADDITIONAL DIRECTORS:
 
 /s/ WILLIAM R. HEARST III*     Vice Chairman                   April 28, 1999
- ----------------------------
   William R. Hearst III
 
                                Director
- ----------------------------
C. Michael Armstrong
 
     /s/ L. JOHN DOERR*         Director                        April 28, 1999
- ----------------------------
       L. John Doerr
 
    /s/ LEO J. HINDERY*         Director                        April 28, 1999
- ----------------------------
       Leo J. Hindery
 
    /s/ JOHN C. MALONE*         Director                        April 28, 1999
- ----------------------------
       John C. Malone
</TABLE>
    
 
                                      II-6
<PAGE>   43
 
   
<TABLE>
<CAPTION>
         SIGNATURE                         TITLE                      DATE
         ---------                         -----                      ----
<S>                             <C>                             <C>
                                Director
- ----------------------------
John C. Petrillo
 
   /s/ BRIAN L. ROBERTS*        Director                        April 28, 1999
- ----------------------------
      Brian L. Roberts
 
     /s/ JAMES R. SHAW*         Director                        April 28, 1999
- ----------------------------
       James R. Shaw
 
   /s/ DAVID M. WOODROW*        Director                        April 28, 1999
- ----------------------------
      David M. Woodrow
</TABLE>
    
 
*By: /s/ DAVID G. PINE
     -----------------------------------
     David G. Pine
     Attorney-in-fact
 
                                      II-7
<PAGE>   44
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                           EXHIBIT TITLE
- -------                          -------------
<S>       <C>
23.02     Consent of Ernst & Young LLP, Independent Auditors.
23.03     Consent of PricewaterhouseCoopers LLP, Independent
          Accountants.
</TABLE>

<PAGE>   1
 
                                                                   EXHIBIT 23.02
 
               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
   
     We consent to the reference to our firm under the caption "Experts" in
Amendment No. 2 to the Registration Statement (Form S-3 No. 333-72689) and
related Prospectus of At Home Corporation for the registration of 919,000 shares
of its Series A common stock and to the incorporation by reference therein of
our report dated January 19, 1999, with respect to the consolidated financial
statements of At Home Corporation included in its Annual Report (Form 10-K) for
the year ended December 31, 1998, filed with the Securities and Exchange
Commission.
    
 
                                                               Ernst & Young LLP
San Jose, California
   
April 26, 1999
    

<PAGE>   1
 
                                                                   EXHIBIT 23.03
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
     We hereby consent to the incorporation by reference in the Prospectus
constituting part of this Registration Statement on Form S-3 of our report dated
April 23, 1998, which appears in Exhibit 99.01 of the Current Report on Form
8-K/A of At Home Corporation dated February 19, 1999. We also consent to the
reference to us under the heading "Experts" in such Prospectus.
 
                                          PRICEWATERHOUSECOOPERS LLP
 
Boston, Massachusetts
   
April 28, 1999
    


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