Filed by Fair, Isaac and Company, Incorporated pursuant
                                to Rule 425 under the Securities Act of 1933 and
                                      deemed filed pursuant to Rule 14a-12 under
                                             the Securities Exchange Act of 1934

                                             Subject Company:  HNC Software Inc.
                                                   Commission File No. 000-26146

                                                            Date: April 29, 2002

         This filing relates to the proposed merger between Northstar Acquistion
Inc., a wholly-owned subsidiary of Fair, Isaac and Company, Incorporated, and
HNC Software Inc., pursuant to an Agreement and Plan of Merger, dated as of
April 28, 2002.  The Agreement and Plan of Merger was filed by Fair, Isaac
Under cover of Form 8-K on April 29, 2002 and is incorporated by reference into
this filing.

         This filing contains forward-looking statements that involve risks,
uncertainties and assumptions. All statements other than statements of
historical fact are statements that could be deemed forward-looking statements.
For example, statements of future product offerings, expected synergies, timing
of closing, execution of integration plans and increases in shareholder value as
a result of the merger, are all forward-looking statements. Risks, uncertainties
and assumptions include the possibility that the market for the sale of certain
products and services may not develop as expected; that development of these
products and services may not proceed as planned; that the transaction does not
close or that the companies may be required to modify aspects of the transaction
to achieve regulatory approval; that prior to the closing of the proposed
merger, the businesses of the companies suffer due to uncertainty; that the
parties are unable to successfully execute their integration strategies, or
achieve planned synergies; and other risks that are described from time to time
in Fair, Isaac's SEC reports (including but not limited to its annual report on
Form 10-K for the year ended September 30, 2001, and subsequently filed
reports); and other risks that are described from time to time in HNC's SEC
reports (including but not limited to its annual report on Form 10-K for the
year ended December 31, 2001, and subsequently filed reports). If any of these
risks or uncertainties materializes or any of these assumptions proves
incorrect, Fair, Isaac's and HNC's results could differ materially from Fair,
Isaac's and HNC's expectations in these statements. Fair, Isaac and HNC assume
no obligation and do not intend to update these forward-looking statements.

         Fair, Isaac and HNC intend to file with the Securities and Exchange
Commission a joint proxy statement/prospectus and other relevant materials in
connection with the merger. The joint proxy statement/prospectus will be mailed
to the stockholders of Fair, Isaac and HNC. Before making any voting or
investment decision with respect to the merger, investors and stockholders of
Fair, Isaac and HNC are urged to read the joint proxy statement/prospectus and
the other relevant materials when they become available because they will
contain important information about Fair, Isaac, HNC and the merger. The joint
proxy statement/prospectus and other relevant materials (when they become
available), and any other documents filed by Fair, Isaac and HNC with the SEC,
may be obtained free of charge at the SEC's web site at www.sec.gov. In
addition, investors and stockholders of Fair, Isaac may obtain free
copies of the documents filed with the SEC by Fair, Isaac by contacting Fair,
Isaac Investor Relations, 200 Smith Ranch Road, San Rafael, CA 94903-5551,
415-492-5309. Investors and stockholders of HNC may obtain free

copies of documents filed with the SEC by HNC by contacting HNC Investor
Relations, 5935 Cornerstone Court West, San Diego, CA 92121, 858-546-8877.

         Fair, Isaac, HNC and their respective executive officers and directors
may be deemed to be participants in the solicitation of proxies from the
stockholders of Fair, Isaac and HNC in favor of the merger. Information
concerning the interests of Fair, Isaac's executive officers and directors in
the merger, including their ownership of Fair, Isaac common stock, is contained
in its Proxy Statement for its Annual Meeting of Stockholders held on February
5, 2002 and will be contained in the joint proxy statement/prospectus when it
becomes available. Information concerning the interests of HNC's executive
officers and directors in the merger, including their ownership of HNC common
stock, is contained in its Proxy Statement for its Annual Meeting of
Stockholders to be held on May 28, 2002 and will be contained in the joint proxy
statement/prospectus when it becomes available. Copies of such Proxy Statements
may be obtained without charge at the SEC's web site at www.sec.gov.

                                      * * *

[Joint Press Release Issued on April 29, 2002]
- --------------------------------------------------------------------------------

               FAIR, ISAAC AND HNC SOFTWARE ANNOUNCE MERGER PLANS

  Agreement Will Create Industry Powerhouse in Business Analytics and Decision
                         Management Technology Solutions

   Merged Company Will Provide End-to-End Solutions for Customer Acquisition,
                           Management and Optimization

SAN RAFAEL, Calif., and SAN DIEGO, Calif. - April 29, 2002 - Fair, Isaac and
Company, Incorporated (NYSE: FIC) and HNC Software Inc. (NASDAQ: HNCS) today
announced plans to join forces in a merger that will create an unmatched
provider of leading-edge business analytic solutions for a broad range of
industries. The companies will merge under the Fair, Isaac name in a move that
will bolster the brand's global leadership in creative analytics and position
the combined company to deliver greater value to its customers, shareholders and
employees.

Fair, Isaac and HNC share a proven track record of providing innovative customer
strategy and decision management applications and tools, and the merger is
designed to fully leverage the strengths of each organization. Fair, Isaac sets
the standard for analytic solutions, and HNC is a

recognized leader in high-end analytic and decision management software. They
help companies acquire customers, build customer loyalty, reduce losses and
optimize the value of customer relationships. The addition of HNC's domain and
technology expertise will allow the combined company to offer a more complete
set of solutions to core markets including financial services, retail,
telecommunications, insurance, government and healthcare.

"This combination of leaders in our respective markets will bring the depth of
Fair, Isaac's creative analytics to a new level for the industries we serve,"
said Tom Grudnowski, CEO of Fair, Isaac. "We have an exciting opportunity to
bring together the best minds in analytics and decision management to better
leverage and deliver leading-edge technologies, products, and services. These
synergies and our complementary product lines make this a tremendous and timely
proposition, and position us for sustained long-term growth."

"Fair, Isaac and HNC share a common strategic vision for the growth of the
analytics and decision management technology market," said John Mutch, Chief
Executive Officer of HNC. "Our combined intellectual assets and services will
meet the increasing demand for the solutions we offer and create immediate
benefits for our current customers. The combination is extremely well-positioned
to deliver sustainable shareholder value."

Structure and Terms

Under the merger agreement, approved by both Boards of Directors, the owners of
HNC will receive 0.346 of a newly issued Fair, Isaac share for each share of
HNC. HNC stockholders will own approximately 35% of the total outstanding
capital stock of the merged company. Two directors from HNC will join the Board
of Directors of Fair, Isaac, bringing the total number of board members to nine.
Tom Grudnowski will remain the Chief Executive Officer of Fair, Isaac. The
integration effort will be managed by a combined team of Fair, Isaac and HNC
leaders headed by Mark Pautsch, vice president of product development at Fair,
Isaac. The overall transaction is valued at approximately $810 million, based on
the closing price of Fair, Isaac stock on April 26, 2002. The transaction is
expected to be tax-free to stockholders of both companies for U.S. federal
income tax purposes and is expected to close in the third calendar quarter,
subject to regulatory review, approval by both companies' stockholders and
certain other conditions.

Stephens Inc. and Salomon Smith Barney Inc. acted as financial advisors to Fair,
Isaac. Credit Suisse First Boston acted as financial advisor to HNC. Pillsbury
Winthrop LLP is legal advisor to Fair, Isaac. Fenwick & West LLP is legal
advisor to HNC.

The Combined Company - Unparalleled Depth in Analytics

The merger of Fair, Isaac and HNC will deliver significant benefits to companies
who rely upon creative analytics and decision management technologies to develop
and implement profitable customer acquisition and relationship management
strategies. The merger will combine Fair, Isaac's leadership position in
advanced analytics with HNC's leadership position in analytic and decision
management software. The merged company will be positioned to respond to growing

demand for analytic solutions that help businesses market more efficiently,
increase customer value, reduce losses and operating expenses, and enter new
markets more profitably. The company will offer an unparalleled depth of
solutions to a broad range of core and emerging markets.

Fair, Isaac and HNC will host a joint conference call today at 6:00 am Pacific
Time / 9:00 am Eastern Time to discuss this merger in more detail. The call can
be accessed live on the Investor Relations section of both companies' Web sites:
www.fairisaac.com and www.HNC.com, and will be archived on the sites following
the call. All interested parties are welcome to attend.

About Fair, Isaac

Fair, Isaac is the preeminent provider of creative analytics that unlock value
for people, businesses and industries. The company's predictive modeling,
decision analysis, intelligence management and decision engine systems power
more than 14 billion decisions a year. Founded in 1956, Fair, Isaac helps
thousands of companies in over 60 countries acquire customers more efficiently,
increase customer value, reduce risk and credit losses, lower operating expenses
and enter new markets more profitably. Most leading banks and credit card
issuers rely on Fair, Isaac's analytic solutions, as do insurers, retailers,
telecommunications providers and other customer-oriented companies. Through the
www.myfico.com Web site, consumers use the company's FICO(R) scores, the
standard measure of credit risk, to manage their financial health. For more
information, visit www.fairisaac.com.

About HNC

HNC is a leading provider of high-end analytic and decision management software
that enables global companies to manage customer interactions by converting data
and customer transactions into real time recommendations. HNC's proven software
empowers Global 2000 companies in the financial services, insurance,
telecommunications, healthcare industries and government agencies to make
millions of the right mission-critical customer decisions designed to increase
revenues and decrease risk. For more information, visit www.HNC.com.

                                      * * *

[Presentation materials for analyst briefing on April 29, 2002]
- --------------------------------------------------------------------------------

[Fair, Isaac logo]                                                    [HNC logo]

                              Redefining The World
                              Of Business Analytics



                  --------------------------------------------

[Fair, Isaac logo]                                                    [HNC logo]

                                 Tom Grudnowski
                      Chief Executive Officer - Fair, Isaac

                                   John Mutch
                     Chief Executive Officer - HNC Software
                  ---------------------------------------------

TRANSACTION SUMMARY

- -        Stock-for-Stock merger
- -        Fixed exchange ratio of 0.346 Fair, Isaac shares for each HNC Software
         share
- -        $810 million transaction value
         -        $22.18 per share based on April 26, 2002 closing prices
         -        HNC Software to own 35% of the pro forma company
- -        Accretive to earnings in full fiscal year 2003
- -        Leadership
         -        Tom Grudnowski, Chief Executive Officer
         -        Integration led by both management teams
- -        2 HNC Software directors or appointees to join Fair, Isaac Board
- -        Expected closing in 3rd Calendar Quarter 2002

                -------------------------------------------------

FAIR, ISAAC & HNC SOFTWARE

$ in millions Fair, Isaac HNC Market Capitalization (1) $1,469 $810 Revenue (2) $343 $228 Cash (2) $182 $308 Debt (2) $0 $150 Headquarters San Rafael, CA San Diego, CA
(1) Based on prices as of 4/26/02; HNC based on transaction value (2) Financial information as of / for the 12 months ended 3/31/02 -------------------------------------------------- STRATEGIC RATIONALE - - Redefine the growing world of business analytics - - Consolidate expertise in transactional and predictive technology at top of analytic value chain - - Combine leading technology platforms and best-of-breed products across multiple large verticals - - Bring together the best minds in analytics - Management - R&D - Sales & Marketing - - Increase shareholder value - attractive financial impact -------------------------------------------------- HUGE NEW MARKETS FOR ANALYTICS AND DECISION MANAGEMENT SOLUTIONS [Diagram showing the following information: CRM Market Size: $8B; Analytics Market Size: $2B; Consulting Market Size: $21B; Data Market Size: $9B; Processors Market Size: $20B] Source: Gartner, IDC and Wall Street estimates, 2001 US markets -------------------------------------------------- COMPLEMENTARY CUSTOMERS: DOMAIN EXPERTISE, CROSS-SELL OPPORTUNITIES
Fair, Isaac HNC Financial Services 65% of world's credit cards; 23 of 25 card issuers 3 out of 4 US mortgages; worldwide 22 of the top 25 retail card issuers Insurance >300 companies 7 of 10 largest carriers Telecom 7 of top 10 US carriers 80+ service providers Worldwide Other Retail Government, Healthcare
COMPLEMENTARY CUSTOMERS: CLEAR LEADERS IN KEY VERTICAL MARKETS [AAA Mid-Atlantic, State Farm Insurance, Progressive] [Worldcom, Bell, Verizon] [Barclays, Fleet, Banamex, BBVA Bancomer, GMAC, Bank of America, HSBC, Chase, Itau Seguros, E*Trade, Deutsche Bank, Royal Bank Financial Group, Samsung Digital, Unibanco, SMBC, United California Bank] [Best Buy.com, Marks & Spencer, neckermann, The Picture People, Tower Records, Enterprise Rent-a-Car, Dillards.com] -------------------------------------------------- VISION / VALUE PROPOSITION Fair, Isaac is the preeminent provider of creative analytics that unlock value for people, businesses and industries Our solutions enable our customers to develop and implement profitable strategies that - - Expand market share - - Build customer loyalty - - Reduce losses - - Optimize the value of customer relationships -------------------------------------------------- A SHARED TECHNOLOGY VISION Analytical Applications Scoring, Risk, Marketing, Origination, Efficiency, Acct. Mgmt. Integrated Enterprise Solutions - Core Analytic Capabilities Decisioning Rules Engines Data Intelligence -------------------------------------------------- BRINGING TOGETHER THE BEST MINDS IN ANALYTICS - - Strong leadership, proven execution - - Experienced, best talent at all levels - - Two of the world's best R&D teams to accelerate technical innovation - - Analytics Consulting groups for enhanced execution of selling complex solutions - - Leveraged Sales and Marketing team for deepening customer relationships FOCUS ON INTEGRATION - - Integration effort led by identified team of leaders from multiple disciplines - - Defined timeframe with specific targets and milestones - - Comprehensive integration plan to: - Eliminate operational redundancies - Capitalize on scale - Pursue new revenue opportunities - - Combine and leverage leading technology platforms - - Restructure product lines for best applications - - Proactively integrate to advance customer relationships with clear brand and product alignment - - Integrate and leverage the best cultural elements -------------------------------------------------- SUBSTANTIAL SYNERGY OPPORTUNITIES - - Annual pre-tax cost savings of at least $35 million - - Similar operating structures enable major efficiency opportunities - Refocus R&D - Sales Force Leverage - General and Administrative - Align Complementary Product Lines - - Targeted efficiencies expected to be fully realized 12 months from closing; opportunity for ongoing improvement - - Combined Company better positioned to accelerate top-line growth ---------------------------------------------------- FINANCIAL IMPACT
($ in Millions, except EPS) Fair, Isaac HNC Pro Forma FY03 Revenue (a) $402 $287 $689 Cash/GAAP FY03 EPS (a)(b) $2.77 $3.04 / $2.85 Accretion (b) 10% / 3% LTM Revenue (c) $343 $228 $571 LTM EBITDA (c) $111 $28 $139 EBITDA Margin (c) 32% 12% 24%
(a) Revenue and EPS estimates for Fair, Isaac's fiscal year ending 9/30 based on First Call as of 4/26/02 (b) Cash EPS excludes amortization of identified intangibles resulting from this transaction (c) Financial results for the twelve months ended 3/31/02 -------------------------------------------------- COMPELLING INVESTMENT OPPORTUNITY - - Preeminent provider of creative analytics that unlock value for people, businesses and industries - - Accelerate ability to capture large market potential - - Predictable and profitable financial model - Over 70% recurring revenue model - Accelerate top-line growth and expand operating margins - - Strong cash balance - $490MM as of March 31, 2002 - - Accretive to earnings (even before any revenue synergies) - - Defined integration plan -------------------------------------------------- The New Fair, Issac [Fair, Isaac logo] Redefining the World of Business Analytics -------------------------------------------------- * * * [Communication by Tom Grudnowski, Chief Executive Officer of Fair, Isaac, to Fair, Isaac employees made on April 29, 2002] - -------------------------------------------------------------------------------- Everyone -- I am excited to share some history-making news with you. Today we have taken a major step in our growth as a company that affirms our global leadership in creative analytics and decision technology - we have announced a definitive agreement to merge with HNC Software. The merger resulted from a shared vision of bringing the best technology, people, customization and service to the marketplace. The combination of our two companies, both recognized as leaders in our respective markets, will provide new opportunities for our employees, customers and shareholders alike. The addition of HNC's people and products will reinforce our leadership in creative analytics and data solutions, while bolstering our ability to provide best-of-breed strategy software solutions. Our respective products and services are widely recognized as the standards that our customers have come to rely on to build better business strategies and manage their customer relationships. Each of you should be proud of your contributions to the success of Fair, Isaac. Our evolution over the past many months has been nothing short of remarkable. Our company has changed tremendously, and we continue to succeed and grow because you have embraced new challenges and opportunities. I want to thank everyone for your ongoing commitment and optimism. And I want to ask you to keep it up - our announcement today will significantly accelerate our growth and evolution. We will move quickly to integrate and realize the many benefits of this merger. Importantly, as we do so, we all must remember three key guiding principles over the coming months: - - WE WILL NOT STRAY FROM OUR STRATEGIC VISION o We are the preeminent provider of creative analytics that unlock value for people, businesses and industries - - WE MUST ALL VIGILANTLY MAINTAIN FOCUS ON OUR CURRENT BUSINESS o Our clients are our most valued asset - we must do all we can to ensure they only feel the benefits of this merger - - WE MUST ALL COMMUNICATE TO THE BEST OF OUR ABILITIES. o We will be open and forthcoming with all available information. We will have numerous delivery vehicles to ensure we all are informed about the many aspects of this merger. As we merge HNC with Fair, Isaac, each of us will be required to learn new things, to grow during a time of change and transition, and yet still deliver results that impact the bottom line. The transition will present challenges, but I am certain of our success. You are focused, driven and talented -- all characteristics that will ensure we keep setting the pace for the rest of the industry. * * * Thank you everyone. Tom Grudnowski, CEO * * * [Frequently Asked Questions communicated to Fair, Isaac employees on April 29, 2002] - -------------------------------------------------------------------------------- Fair, Isaac and HNC Software Merger FAQ's Why are we merging with HNC Software? As the leading provider of creative analytics, we are always looking for ways to bring more value to the clients and markets we serve. Through this merger, we will reinforce our leadership in our core markets, open doors to new markets and bring a tremendous new depth of resources and solutions to our clients. Is this a merger or an acquisition? This is a merger of the two companies' people, technologies and assets. The result of this merger is a stronger, more robust Fair, Isaac brand. Fair, Isaac will be the name of the merged entity. How will Fair, Isaac benefit from this merger? This merger helps us bring a deeper, more powerful mix of products and services to our customers. It reinforces our leadership in the areas of creative analytics and data solutions while bolstering our ability to provide complementary software solutions. It will also accelerate and enhance our innovation efforts. In short, we will be unmatched in the quality of technology and service we can bring to the analytics marketplace. How will the merger affect me? The merger presents tremendous new opportunities for all of us. We are bringing the best minds in analytics and decision technology together to take the power of our solutions to a new level for the industries we serve. People at all levels of the organization will play an important role in the success of this exciting new venture. When will the merger be finalized? A merger such as this follows a review and approval process. Assuming standard regulatory pace and shareholder approvals, we expect the merger will be complete in late summer or early fall. We will regularly keep you updated on the status of the approval process and integration plans. How will the merger impact daily operations in San Rafael, Arden Hills and our other locations? Day-to-day operations will not change, and it is critical that both organizations keep their focus on current business to ensure our clients benefit from this merger from day one. # # #