SIGMA DESIGNS INC
POS AM, 1998-12-11
COMPUTER PERIPHERAL EQUIPMENT, NEC
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    As filed with the Securities and Exchange Commission on December 11, 1998
                                                      Registration No. 333-48023
- --------------------------------------------------------------------------------
    



                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

   
                                 POST-EFFECTIVE
                               AMENDMENT NO. 1 TO
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      Under
                           The Securities Act of 1933
    

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

                               Sigma Designs, Inc.
             (Exact name of Registrant as specified in its charter)

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

        CALIFORNIA                      7372                  94-2848099
(State or other jurisdiction     (Primary Standard         (I.R.S. Employer
    of incorporation or       Industrial Classification  Identification Number)
       organization)                Code Number)

                              46501 LANDING PARKWAY
                            FREMONT, CALIFORNIA 94538
                                  (510) 770-0100
       (Address, including zip code, and telephone number, including area
               code, of Registrant's principal executive offices)

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

                                  THINH Q. TRAN
                                  PRESIDENT AND
                             CHIEF EXECUTIVE OFFICER
                               SIGMA DESIGNS, INC.
                              46501 LANDING PARKWAY
                            FREMONT, CALIFORNIA 94538
                                 (510) 770-0100
 (Name, address, including zip code, and telephone number, including area code,
                              of agent for service)

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

   
                                   Copies to:
                                 DAVID J. SEGRE, ESQ.
                        WILSON SONSINI GOODRICH & ROSATI
                            PROFESSIONAL CORPORATION
                               650 PAGE MILL ROAD
                        PALO ALTO, CALIFORNIA 94304-1050
                                 (650) 493-9300
    

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

         Approximate  date of  commencement  of proposed sale to the public:  As
soon as practicable after the effective date of this Registration Statement.

         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, please 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 the only securities being delivered  pursuant to this Form are being
offered pursuant to dividend or interest reinvestment plans, please check the
following box. [_]

         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. [_]

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

   
<TABLE>

                                                CALCULATION OF REGISTRATION FEE
<CAPTION>
===================================================================================================================================
         Title of Each Class                 Amount             Proposed Maximum            Proposed Maximum          Amount of
          of Securities to                   to be               Offering Price            Aggregate Offering        Registration
            be Registered                  Registered             Per Share(2)                  Price(2)                 Fee
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                     <C>                        <C>                         <C>                      <C>    
Common Stock, no par value...........   900,000 shares             $2.88                       $2,592,000               $720.58


===================================================================================================================================
<FN>

(1)      Includes  shares of Common Stock which may be offered  pursuant to this
         Registration  Statement  consisting  of 900,000  shares  issuable  upon
         conversion of 15,000 shares of Series A Convertible  Preferred Stock of
         the Company and issuable upon exercise of warrants issued in connection
         with the issuance of the Series A Preferred  Stock.  In addition to the
         shares  set  forth  in the  table,  pursuant  to  Rule  416  under  the
         Securities Act of 1933, as amended,  this  Registration  Statement also
         covers an indeterminate  number of additional shares of Common Stock as
         may become  issuable upon  conversion of or in respect of the Company's
         Series A Preferred  Stock and Warrants,  as such number may be adjusted
         as  a  result  of  stock  splits,   stock  dividends  and  antidilution
         provisions (including floating rate conversion prices).

(2)      Estimated  solely  for the  purpose  of  computing  the  amount  of the
         registration  fee based on the  average  of the high and low prices for
         the Common  Stock as reported on the Nasdaq Stock Market on December 7,
         1998, in accordance  with Rule 457(c) under the Securities Act of 1933.
         A registration  fee of $817 was paid by the Company in connection  with
         the initial filing of Registration Statement No. 333-48023 on March 16,
         1998.
</FN>
</TABLE>

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

         THE REGISTRANT HEREBY AMENDS THIS  REGISTRATION  STATEMENT ON SUCH DATE
OR DATES AS MAY BE NECESSARY TO DELAY ITS  EFFECTIVE  DATE UNTIL THE  REGISTRANT
SHALL FILE 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 COMMISSION,  ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.
    
================================================================================
<PAGE>

       

   
                                   PROSPECTUS

                                 900,000 SHARES
    

                               SIGMA DESIGNS, INC.

                                  COMMON STOCK


   
         This  Prospectus may be used only in connection  with the resale,  from
time to time,  of up to 900,000  shares of Common Stock of Sigma  Designs,  Inc.
("Sigma" or the "Company"),  by KA Investments LDC. All of the shares covered by
this  Prospectus are to be sold by KA Investments  LDC. KA Investments  LDC will
receive the shares upon  conversion of our Series A Preferred Stock and exercise
of warrants. KA Investments LDC purchased the shares of Series A Preferred Stock
and Warrants from an entity who  originally  purchased  such shares and warrants
directly  from  us  in a  transaction  not  subject  to  registration  with  the
Securities and Exchange Commission. We will not receive any of the proceeds from
the  sale of the  shares.  We  will,  however,  pay  the  expenses  incurred  in
registering the shares, including legal and accounting fees.

         The shares  offered by this  Prospectus  may be offered and sold,  from
time to time, by KA Investments  LDC, or others who receive the shares  pursuant
to a valid  transfer.  Such  offers  and  sales can take  place in  transactions
(including block transactions) on the Nasdaq Stock Market (or any other exchange
on  which  our  Common  Stock  may  then  be  listed),  in  privately-negotiated
transactions, broker-dealer transactions, exchange transactions, short sales, or
other  methods.  Sales may be made at market  prices or  negotiated  prices.  KA
Investments LDC will pay for any commission expenses and brokerage fees.

         Our Common  Stock is traded on the Nasdaq Stock Market under the symbol
"SIGM."  On  December  7,  1998,  the last sale  price for our  Common  Stock as
reported on the Nasdaq Stock Market was $2.88 per share.

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

         SEE "RISK  FACTORS" ON PAGE 5 FOR A DISCUSSION OF CERTAIN  FACTORS THAT
SHOULD BE CONSIDERED  BY  PROSPECTIVE  PURCHASERS OF THE SHARES  OFFERED BY THIS
PROSPECTUS.

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

         NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR  DISAPPROVED  OF 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 December 11, 1998
    

<PAGE>


                              AVAILABLE INFORMATION

   
         We are  subject to the  informational  requirements  of the  Securities
Exchange Act of 1934,  as amended (the  "Exchange  Act").  Accordingly,  we file
reports, proxy statements and other information with the Securities and Exchange
Commission (the "Commission").  These reports,  proxy and information statements
and other  information  may be  inspected  and  copied at the  public  reference
facilities  maintained by the Commission at 450 Fifth Street, N.W.,  Washington,
D.C. 20549, and at the following  Regional  Offices of the Commission:  New York
Regional Office, Seven World Trade Center, New York, New York 10048, and Chicago
Regional Office,  500 West Madison Street,  Chicago,  Illinois 60661.  Copies of
these  materials  can be  obtained  from the  Public  Reference  Section  of the
Commission,  450 Fifth Street, N.W., Washington,  D.C. 20549 upon payment of the
prescribed fees. Our Common Stock is quoted on the Nasdaq Stock Market. Reports,
proxy and information  statements and other  information  concerning the Company
may be inspected at the National Association of Securities Dealers, Inc. at 1735
K Street, N.W., Washington, D.C. 20006. The Public may obtain information on the
operation  of the Public  Reference  Room by  calling  the  Securities  Exchange
Commission at  1-800-SEC-0330.  The  Commission  maintains a World Wide Web site
that contains  reports,  proxy and information  statements and other information
regarding registrants that file electronically with the Commission.  The address
of the  site is  http://www.sec.gov.  We  maintain  a  World  Wide  Web  Site at
http://www.sigmadesigns.com.

         This Prospectus  constitutes a part of a Registration Statement on Form
S-3 (herein,  together  with all  amendments  and  exhibits,  referred to as the
"Registration  Statement")  filed by the Company with the  Commission  under the
Securities Act of 1933, as amended (the "Securities  Act"). This Prospectus does
not  contain all of the  information  set forth in the  Registration  Statement,
certain parts of which are omitted in accordance  with the rules and regulations
of the Commission.  For further  information with respect to the Company and the
shares  covered  by this  Prospectus,  reference  is  made  to the  Registration
Statement.  Statements contained in this Prospectus concerning the provisions of
any document are not necessarily complete,  and each such statement is qualified
in its  entirety  by  reference  to the  copy of such  document  filed  with the
Commission.
    


<PAGE>


                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

   
         The following  documents  filed by the Company with the  Commission are
hereby  incorporated by reference in this  Prospectus:  (i) the Company's Annual
Report on Form  10-K for the  fiscal  year  ended  January  31,  1998;  (ii) the
Company's  Quarterly  Report on Form 10-Q for the quarters ending April 30, 1998
and July 31, 1998; (iii) the Company's Proxy Statement relating to the Company's
Annual Meeting of  Shareholders  held on June 12, 1998; and (iv) the description
of the Company's  Common Stock contained in its  Registration  Statement on Form
8-A filed with the  Commission  on November 3, 1986, as amended on September 22,
1989.
    

         All  reports  and other  documents  subsequently  filed by the  Company
pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date
of this Prospectus and prior to the termination of this offering shall be deemed
to be incorporated by reference  herein and to be a part hereof from the date of
filing of such reports and documents. Any statement incorporated herein shall be
deemed to be modified or  superseded  for  purposes  of this  Prospectus  to the
extent  that a statement  contained  herein or in any other  subsequently  filed
document  which  also is or is deemed to be  incorporated  by  reference  herein
modifies or supersedes such  statement.  Any statement so modified or superseded
shall not be deemed,  except as so modified or superseded,  to constitute a part
of the Registration Statement or this Prospectus.

   
         The Company hereby undertakes to provide without charge to each person,
including  any  beneficial  owner,  to whom a copy of this  Prospectus  has been
delivered,  upon written or oral request of such person, a copy of any or all of
the foregoing documents incorporated herein by reference (other than exhibits to
such documents,  unless such exhibits are specifically incorporated by reference
into such documents). Requests for such documents should be submitted in writing
to Carol Kaplan,  Director of Investor  Relations,  at the  Company's  principal
executive  offices at 46501 Landing Parkway,  Fremont,  California  94538, or by
telephone at (510) 770-0100.
    

       


   
                                  RISK FACTORS

         You should  carefully  consider the risks described below before making
an investment decision. The risks and uncertainties  described below are not the
only ones facing our company.  Additional risks and  uncertainties not presently
known to us or that we currently  deem  immaterial  may also impair our business
operations.

         If any of the following risks actually occur,  our business,  financial
condition or results of operations could be materially  adversely  effected.  In
such case, the trading price of our Common Stock could decline, and you may lose
all or part of your investment.

         This Prospectus also contains  forward-looking  statements that involve
risks and  uncertainties.  Our actual results could differ materially from those
anticipated in these forward-looking  statements as a result of certain factors,
including  the  risks  faced  by  us  described  below  and  elsewhere  in  this
Prospectus.

History of Operating Losses; Recent Significant Losses; Liquidity

         We incurred  significant  losses in fiscal 1995, 1996, 1998 and  during
1999 and had substantial negative cash flow in fiscal 1995, 1996, 1997, 1998 and
during 1999.  Since our  introduction  of the REALmagic  Moving Picture  Experts
Group  ("MPEG")  product  line  in  November  1993,  we  have  made  significant
investments  in  marketing  and  technological   innovation  for  our  REALmagic
products. As a result of our investments, we


<PAGE>

experienced  significant  losses through fiscal 1996. Fiscal 1995, 1996 and 1998
also included  significant  losses  associated  with  products  other than those
related to our REALmagic technology.  Since our inception through July 31, 1998,
our total accumulated deficit is $39,205,000.  We cannot assure you that we will
continue  to sell  our new  REALmagic  products  in  substantial  quantities  or
generate  significant  revenues  from those sales.  We cannot assure you that we
will return to  profitable  operations  in any future  fiscal  quarter or fiscal
year. If profitable operations are achieved, we cannot assure you that they will
be sustained.


         We have an Amended and Restated  Business Loan  Agreement  with Silicon
Valley Bank,  dated  October 26, 1998.  Under the  Agreement we gave two secured
Promissory  Notes in total principal  amounts of $12 million and $6 million to a
Silicon  Valley Bank.  Under this  Agreement and the Notes,  we are subject to a
certain profitability covenant.  Since July, 1997, we have, on occasion, been in
violation of the  profitability  covenant and have obtained waivers releasing us
from our obligation to meet this covenant. We were granted such a waiver for the
quarter ended October 31, 1998. We expect to need another waiver for the quarter
ending  January 31, 1999.  We cannot  assure you that  Silicon  Valley Bank will
grant  that  waiver.  If we do not meet this  covenant,  and if we do not obtain
another  waiver,  the loans may be in default.  If we are in  default,  then the
lender could  accelerate  payments on the Notes and we could suffer serious harm
to our business, financial condition and prospects.

Marketing  Risks;  Volatility  of  OEM  Customer  Sales;  Volatility  of  Resale
Distribution

         Our ability to  increase  sales,  achieve  profitability  and  maintain
REALmagic as a personal  computer ("PC") industry  multimedia  standard  depends
substantially  on our ability to achieve a sustained  high level of sales to new
Original Equipment  Manufacture  ("OEM") customers.  We have not executed volume
purchase  agreements with any of our customers.  Our customers are not under any
obligation  to  purchase  any  minimum  quantity  of our  products.  We have not
achieved  bundling  agreements  with many OEM customers to ensure the success of
our REALmagic  product line. Also, even if we achieve new design wins, we cannot
assure you that PC  manufacturers  will  purchase  our  products in  substantial
volumes.  Sales to any  particular  OEM  customer  are  subject  to  significant
variability   from  quarter  to  quarter  and  to  severe  price   pressures  by
competitors.  Based on our  experience  in the PC  industry,  we expect that our
actual sales to OEM customers will experience  significant  fluctuations.  Also,
estimates of future sales to any particular  customer or groups of customers are
inherently uncertain.

         Our  ability  to  achieve  sustained  profitability  also  depends on a
substantial  increase in the sales of REALmagic  products  through  domestic and
international  distributors for resale through corporate markets.  Sales to such
distributors are typically subject to contractual  rights of inventory  rotation
or  price   protection.   The  failure  of  distributors  to  achieve  sustained
sell-through of REALmagic products could result in product returns or collection
problems. This could contribute to fluctuations in our results of operations. We
cannot assure you that we will be successful in maintaining a significant market
for our REALmagic products.

Technological Change; Uncertainty of Achievement of Technological Leadership

         The  market  for  multimedia  PC  products  is   characterized  by  the
following:  rapidly changing  technology and user preferences,  evolving formats
for compression of video and audio data, and frequent new product introductions.
Even though  REALmagic  products and related software titles have gained initial
market  acceptance,  our success depends,  among other things, on our ability to
achieve and maintain technological leadership and to remain competitive in terms
of price and product performance.


<PAGE>


         To  have   technological   leadership,   we  must   continue   to  make
technological  advancements and research and development investments in the area
of MPEG video and audio decoding. These advancements include the following:

     o  compatibility  with emerging  standards  and  multiple platforms;
     o  improvements  to the REALmagic  architecture;  and
     o  enhancements  to the REALmagic application programming interface.

         We cannot assure you that we will be able to make these advancements to
our REALmagic  technology.  If we do make these  advances,  we cannot assure you
that we will be able to  achieve  and  maintain  technological  leadership.  Any
material failure by us or OEMs and software developers to develop or incorporate
any required  improvement could adversely affect the continued acceptance of our
technology  and the  introduction  and  sale of  future  products  based  on our
technology.  We cannot  assure you that  products or  technologies  developed by
others will not render  obsolete our  technology,  and the products based on our
technology.

         To be  competitive,  we must  anticipate  the needs of the  market  and
successfully  develop and introduce innovative new products in a timely fashion.
We cannot assure you that we will be able to successfully complete the design of
our new products,  have these products manufactured at acceptable  manufacturing
yields,  or  obtain  significant   purchase  orders  for  these  products.   The
introduction of new products may adversely affect sales of existing products and
contribute to  fluctuations  in operating  results from quarter to quarter.  Our
introduction  of new  products  also  requires  that  we  carefully  manage  our
inventory to avoid inventory obsolescence. In addition, new products, as opposed
to more mature products,  typically have higher initial  component  costs.  This
higher cost could result in downward pressures on our gross margins.

Competition

         The market for  multimedia  PC products is highly  competitive,  and is
driven by faster  processors  provided by Intel Corporation and other companies.
Intel   processors   have,  in  recent  years,   included   increased   graphics
functionality.  Other companies with more experience and financial resources may
develop a competitive  product that could inhibit future growth of our REALmagic
technology.  Increased  competition may be generated from several major computer
product  manufacturers  that have developed products and technologies that could
compete directly with REALmagic  products on the PC platform.  These competitors
include:

     o SGS Thompson Microelectronics;
     o C-Cube Microsystems;
     o IBM Corporation;
     o Zoran Corporation; and
     o LSI Logic.

         In addition, Intel processors are becoming more powerful, so that video
decoding could eventually be done in software.  Intel processors have, in recent
years, included increased graphics  functionality.  Most of our competitors have
substantial  experience and expertise in audio, video and multimedia  technology
and in producing and selling  consumer  products  through  retail  distribution.
These  companies  also have  substantially  greater  engineering,  marketing and
financial  resources  than we  have.  Our  competitors  could  form  cooperative
relationships that could present formidable  competition to us. We cannot assure
you that


<PAGE>


our REALmagic technology will achieve commercial success or that it will compete
effectively  against  other  interactive   multimedia  products,   services  and
technologies that currently exist, are under development, or may be announced by
competitors.

Reliance on a Single Line of Products;  Source of Net Sales;  Market  Demand for
Multimedia Products

         Our business strategy is, and has been, to focus on REALmagic  products
by  investing  heavily in  PC-based  MPEG  technology.  In the fiscal year ended
January 31, 1998 and the six months  ended July 31,  1998,  sales of  multimedia
products  accounted  for  virtually  all of our net  sales.  A decline in market
demand for multimedia  products will materially  adversely  affect our operating
results.  Our present reliance on REALmagic  products is further affected by the
fact that  multimedia  product  sales are  concentrated  in the PC  industry.  A
decline in demand for PCs could have a material  adverse effect on our operating
results and financial condition.

Variability of Operating Results; Seasonal Variations in Demand; DVD Technology

         Our operating  results have  fluctuated in the past and may continue to
fluctuate  in the  future.  This  fluctuation  is due to a  number  of  factors,
including the following and others:

     o   our new product introductions and our competitors;
     o   market acceptance of our products by OEMs, software developers and  end
         users;
     o   the success of our promotional programs;
     o   gains or losses of our significant customers;
     o   reductions in selling prices;
     o   inventory obsolescence;
     o   an interrupted or inadequate supply of semiconductor chips;
     o   our ability to protect our intellectual property; and
     o   loss of our key personnel.

         In  addition,  sales  to  OEM  customers  are  subject  to  significant
variability from quarter to quarter.  This  variability  depends on OEMs' timing
and release of products that  incorporate our REALmagic  technology,  experience
with sales of these products and inventory levels.

         The  market for  consumer  electronics  products  is  characterized  by
significant  seasonal  swings in demand.  Demand  typically  peaks in the fourth
calendar quarter of each year. We expect to derive a substantial  portion of our
revenues from the sales of REALmagic  products in the future. The demand for our
products  will depend in part on the  success of digital  video  technology.  In
light of this, our revenues may vary with the availability of and demand for DVD
titles.  This demand may increase or decrease as a result of a number of factors
that cannot be predicted, such as consumer preferences and product announcements
by competitors.

         Announcements  of  directly  competing  products  will  likely  have  a
negative effect on our operating  results.  Based on our experience,  we believe
that a substantial  portion of our shipments  will occur in the third month of a
quarter,  with significant  shipments  completed in the latter part of the third
month.  This shipment pattern may cause our operating results to be difficult to
predict.  Currently,  we place noncancellable  orders to purchase  semiconductor
products from our foundries with a long lead time. Consequently, if, as a result
of inaccurate  forecasts or cancelled purchase orders, our anticipated sales and
shipments in any quarter do not occur when expected,  our inventory levels could
be disproportionately  high. This could require significant working capital, and
negatively affect our operating results.


<PAGE>


Manufacturing  Risks;  Reliance on  Independent  Suppliers;  Forecasting  Risks;
Production Delay Risks

         Our REALmagic  products and  components are presently  manufactured  by
outside  suppliers or foundries.  We do not have long-term  contracts with these
suppliers.  We conduct  business with our suppliers on a written  purchase order
basis. Our reliance on independent suppliers subjects us to several risks. These
risks include:

     o   the absence of adequate capacity;
     o   the  unavailability  of, or interruptions in access to, certain process
         technologies;   and  
     o   reduced  control  over  delivery  schedules,  manufacturing  yields and
         costs.

We obtain some of our components from a single source.  Delays or  interruptions
have not occurred to date, but any delay or interruption in the supply of any of
the  components  required for the  production of our REALmagic  multimedia  card
currently  obtained from a single source could have a material adverse impact on
our sales of REALmagic products, and on our business.

         We must provide our  suppliers  with  sufficient  lead time to meet our
forecasted  manufacturing  objectives.  Any  failure to properly  forecast  such
quantities  could materially  adversely affect our ability to produce  REALmagic
products  in  sufficient  quantities.  We cannot  assure you that our  forecasts
regarding new product demand will be accurate,  particularly because we sell our
REALmagic  products  on a purchase  order  basis.  Manufacturing  the  REALmagic
chipsets is a complex process, and we may experience short-term  difficulties in
obtaining  timely  deliveries.  This could  affect our ability to meet  customer
demand for our  products.  Any such delay in  delivering  products in the future
could materially and adversely affect our operating results. Also, should any of
our major  suppliers  become unable or unwilling to continue to manufacture  our
key  components  in  required  volumes,  we will have to  identify  and  qualify
acceptable  additional  suppliers.  This qualification  process could take up to
three months or longer and additional sources of supply may not be in a position
to satisfy our requirements on a timely basis.

         In  the  past,  we  have  experienced   production   delays  and  other
difficulties,  and we  could  experience  similar  problems  in the  future.  In
addition,  product defects may occur and they may escape  identification  at the
factory. This could result in unanticipated costs,  cancellations,  deferrals of
purchase orders, or costly recall of products from customer sites.
    

Dependence on Key Personnel

   
         Our future  success  depends in large part on the continued  service of
our  key  technical,  marketing,  sales  and  management  personnel.  Given  the
complexity  of REALmagic  technology,  we are dependent on our ability to retain
and  motivate  highly  skilled  engineers  involved in the ongoing  hardware and
software  development  of REALmagic  products.  These  engineers are required to
refine the existing hardware system and application programming interface and to
introduce  enhancements  in future  applications.  The multimedia PC industry is
characterized  by high level  employee  mobility and  aggressive  recruiting  of
skilled personnel.  Despite incentives we provide to them, our current employees
may not continue to work for us, and if additional  personnel  were required for
our operations,  we may not able to obtain the services of additional  personnel
necessary for our growth. We do not have "keyperson" life insurance  policies on
any of our employees.

Limited   Intellectual   Property   Protection;   Patents  and  Pending   Patent
Applications; Litigious Sector


<PAGE>


         Our  ability to compete  may be  affected by our ability to protect our
proprietary  information.  We currently hold ten patents covering the technology
underlying the REALmagic products. We have filed certain patent applications and
are in the process of preparing  others.  We cannot  assure that any  additional
patents for which we have applied will be issued or that any issued patents will
provide meaningful  protection of our product  innovations.  Like other emerging
multimedia  companies,  we rely  primarily  on trade  secrets and  technological
know-how in the conduct of our business. We also rely, in part, on copyright law
to protect our proprietary rights with respect to REALmagic  technology.  We use
measures  such  as  confidentiality   agreements  to  protect  our  intellectual
property.  These  methods of  protecting  our  intellectual  property may not be
sufficient.

         The  electronics  industry  is  characterized  by  frequent  litigation
regarding  patent and intellectual  property  rights.  Any such litigation could
result in significant  expense to us and divert the efforts of our technical and
management personnel.  In the event of an adverse result in any such litigation,
we could be required to expend  significant  resources to develop  noninfringing
technology or to obtain  licenses to the  technology  that is the subject of the
litigation,  and we may not be  successful in such  development  or in obtaining
such licenses on acceptable  terms,  if at all. In addition,  patent disputes in
the  electronics  industry  have  often  been  settled  through  cross-licensing
arrangements. Because we do not yet have a large portfolio of issued patents, we
may not be able to  settle  an  alleged  patent  infringement  claim  through  a
cross-licensing arrangement.

Risks of International  Operations;  Substantial Percentage of Net Sales Derived
From the Asia Pacific Region

         During the fiscal years ended January 31, 1998, 1997 and 1996, sales to
international  customers accounted for approximately 64%, 72% and 63% of our net
sales,  respectively.  We  anticipate  that  sales to  international  customers,
including  sales  of  REALmagic  products,   will  continue  to  account  for  a
substantial  percentage  of our net  sales.  Also,  some of the  foundries  that
manufacture our products and components are located in Asia.  Overseas sales and
purchases to date have been denominated in U.S. dollars.

         Due to the  concentration of international  sales and the manufacturing
capacity  in  Asia,  we  are  subject  to  the  risks  of  conducting   business
internationally.   These  risks   include   unexpected   changes  in  regulatory
requirements  and  fluctuations in the U.S. dollar that could increase the sales
price in local currencies of our products in international  markets,  or make it
difficult for the Company to obtain price  reductions from its foundries.  We do
not  currently  engage in any  hedging  activities  to reduce  our  exposure  to
exchange  rate  risks.  If  and  when  we  engage  in  transactions  in  foreign
currencies,  our results of operations  could be adversely  affected by exchange
rate fluctuations.

         We derive a substantial  portion of our revenues from sales to the Asia
Pacific  region.  This  region of the world is  subject to  increased  levels of
economic instability,  and this instability could have a material adverse effect
on our results of operations.
    

Volatility of Stock Price

   
         The  market  of our  Common  Stock  has  been  subject  to  significant
volatility.  This  volatility is expected to continue.  The  following  factors,
among others,  may have a  significant  impact on the market price of our Common
Stock:

     o   our announcement of the introduction of new products;


<PAGE>


     o   our competitors' announcements of the introduction of new products;
     o   market conditions in the technology,  entertainment and emerging growth
         company sectors; and 
     o   short sales by shareholders and others.

         The  stock  market  has  experienced,  and is  currently  experiencing,
volatility that  particularly  affects the market prices of equity securities of
many high  technology  and  development  stage  companies,  such as those in the
electronics industry.  This volatility is often unrelated or disproportionate to
the operating  performance of such  companies.  These  fluctuations,  as well as
general economic and market conditions,  could adversely affect the price of our
Common Stock.

Potential for Dilution from Conversion of Series B Preferred Stock

         Series B Preferred  Stock. As of December 7, 1998,  2,250 shares of our
Series B Convertible Preferred Stock were issued and outstanding.  The shares of
Series B Preferred  Stock are convertible at the option of the holders into that
number of shares of Common Stock as is  generally  determined  by the  following
formula:

     o Multiply the stated value ($1,000) by the number of outstanding shares of
Series B  Preferred  Stock  (under  certain  circumstances,  this  value  may be
increased by a premium based on the number of days the Series B Preferred  Stock
is held), and divide the product by the then current Conversion Price (set forth
below).

     o The  Conversion  Price is based on the  average of the lowest six trading
prices of our Common  Stock in the twenty  trading  days ending one day prior to
the date of  conversion of the Series B Preferred  Stock.  Thus, if the Series B
Preferred Stock was converted on December 7, 1998, the Conversion  Price would
have been $2.06.

         Based on this formula, if the remaining  outstanding Series B Preferred
Stock was  converted on December 7, 1998,  it would have been  convertible  into
approximately  1,092,233  shares of Common  Stock.  This  number can prove to be
significantly  greater in the event of a decrease  in the  trading  price of our
Common  Stock.  Purchasers  of our  Common  Stock  will  experience  substantial
dilution of their  investment upon  conversion of the Series B Preferred  Stock.
However,  in the event the price of our Common Stock falls below $3.26,  subject
to applicable  laws  restricting  our repurchase of stock, we have the option to
elect to pay cash (at a premium to the then  current  market price of our Common
Stock) to the  holders of Series B  Preferred  Stock in lieu of  converting  the
shares  of  Series B  Preferred  Stock.  In the  event  we  elect  to pay  cash,
purchasers  of our Common Stock will suffer less  dilution.  Our election to pay
cash,  however,  will come at the expense of diverting our available  cash funds
from  other  potential  uses.  The  shares of Series B  Preferred  Stock are not
registered  and may be sold only if registered  under the Securities Act or sold
in accordance with an applicable exemption from registration, such as Rule 144.

         As of December 7, 1998,  warrants to purchase  50,000  shares of Common
Stock issued to the purchasers of the Series B Preferred  Stock and  exercisable
for a period of three years following May 1, 1998 at a price of $5.16 (as may be
adjusted  from  time  to  time  under  certain  antidilution   provisions)  were
outstanding.

         As of December 7, 1998,  5,854,398 shares of Common Stock were reserved
for issuance upon exercise of our  outstanding  warrants and options  (excluding
the warrants  issued to the  purchasers of the Series B Preferred  Stock) and an
additional 4,300,000 shares of Common Stock were reserved for issuance


<PAGE>


upon  conversion of the preferred  stock and exercise of the warrants  issued to
the purchasers of the Series B Preferred  Stock. At October 31, 1998, there were
13,514,735  shares of Common Stock  outstanding.  Of these  outstanding  shares,
13,492,952 were freely  tradable  without  restriction  under the Securities Act
unless held by affiliates who are subject to certain  limitations under Rule 144
of the Securities Act of 1933, as amended.

Impact of the Year 2000 Issue

         Year 2000  Compliance.  We are aware of the issues  associated with the
programming code in existing  computer systems as the year 2000 approaches.  The
"year 2000  problem"  is  pervasive  and  complex as  virtually  every  computer
operation  will be affected in some way by the  rollover of the  two-digit  year
value to 00. The issue is whether computer systems will properly  recognize date
sensitive  information  when  the year  changes  to  2000.  Systems  that do not
properly  recognize such  information  could generate  erroneous data or cause a
system to fail.

         We have tested our  products  and believe  our  products  are year 2000
compliant.  Our  management  has also  conducted a review of our exposure to the
year 2000 problem, including working with computer systems and software vendors.
We currently  believe that our internal  systems are year 2000 compliant.  We do
not expect to further  incur any  significant  operating  expenses  or invest in
additional computer systems to resolve issues relating to the year 2000 problem,
with  respect  to both  our  information  technology  and  product  and  service
functions.

         However,  significant uncertainty remains concerning the effects of the
year 2000 problem,  including  uncertainty regarding assurances made by vendors.
In addition, we have not investigated year 2000 compliance of other entities who
are not our  vendors  or who are  vendors  or  purchasers  of our  product.  For
example,  we do not  have  control  over  the  compliance  of our  distributors,
partners, banks, stock markets or systems in which our products are used.

         We cannot assume that third parties will be year 2000 compliant, and if
they  are  not,  we  cannot  assume  that we will  not be  subject  to  actions,
liabilities  or  damages  associated  with  these  failures.   We  will  develop
appropriate  contingency  plans in the event that a significant  exposure arises
relative to any such third parties.
    


                                   THE COMPANY

Overview

   
         The following  sections  regarding the Company contain  forward-looking
statements that involve risks and  uncertainties.  The Company's  actual results
could  differ  materially  from  those  anticipated  in  these   forward-looking
statements  as a result of certain  factors,  as discussed in this  Registration
Statement.

         We design,  manufacture  (using  subcontractors)  and market multimedia
products for use with personal computers. The emergence of multimedia technology
in the personal  computer (PC) market has dramatically  changed the way in which
users interact with computers. Multimedia integrates different elements, such as
sound and video,  to enhance the computing  experience  and deliver a heightened
sense of realism.  Through  its  REALmagic  product  line  incorporating  Moving
Picture  Experts Group (MPEG)  technology,  Sigma Designs has become a leader in
this emerging market.


<PAGE>


         Prior to MPEG's introduction, video on personal computers suffered from
serious  drawbacks.  Motion pictures  appeared jerky,  and video was confined to
small window sizes. MPEG, a defined International  Standards  Organization (ISO)
standard  for  video   compression,   eliminated  many  of  those  problems  and
revolutionized  multimedia  on the PC platform.  For the first time,  MPEG users
could play back full-screen,  full-motion video combined with stereo audio, even
from a standard CD-ROM. A single CD-ROM using the MPEG compression technique can
store up to 74 minutes of full-motion video and audio.

     With MPEG  technology,  producers  can  create  (and  users  can  enjoy) an
interactive,  television-like  experience  on a  desktop  PC.  The  result  is a
significant new visual impact, thereby opening possibilities for a wide range of
entertainment,  education,  training and business presentation applications.  In
April 1997, the Company  announced its entry into the Digital Video Disk ("DVD")
market. A key element of the DVD  specification is the use of MPEG-2 for digital
video  compression,  a  technology  in which  Sigma has  established  expertise.
Sigma's REALmagic EM8300,  EM8220 and EM8800 PC-based DVD and SVCD solutions are
extensions  of the  Company's  MPEG  expertise  and provide a  highly-integrated
solution for the PC-DVD and PC-SVCD markets.
    

The REALmagic MPEG Standard

         Since its first  shipment in November  1993,  REALmagic  technology has
received  support  from PC industry  leaders,  software  developers  and OEM and
retail customers.

Partnership with PC Industry Leaders

   
         Sigma has  developed  strategic  partnerships  to  develop  and  market
network  streaming video products with companies such as Hughes Network Systems,
IBM,  Microsoft  Corporation,   Oracle  Corporation,   Silicon  Graphics,  Inc.,
Starlight Networks, Sun Microsystems, OptiVision and FVC.com.
    

Support from Software Developers

   
         Support for Sigma's  REALmagic  MPEG  standard  has grown to over 1,200
software developers. To further expand the list of developers,  Sigma has worked
directly with Microsoft on Microsoft's new streaming  standard for MPEG-2 called
DirectShow.  Sigma Designs is the first and currently the only company  shipping
drivers with DirectShow  support for streaming MPEG-2 video,  making it the only
recommended decoder for use with Microsoft's NetShow Theater video server.

         Using the DirectShow standard, software developers can create streaming
video applications with virtually any video  server-without any C programming at
all. This enables  universities  and corporations to get live video and video on
demand applications online very rapidly, which shortens the sales process.
    

Support from OEMs

   
         In the  United  States,  Dell  Computer  Corporation,  Compaq  Computer
Corporation, IBM, Hughes Network Systems and OptiVision have purchased REALmagic
cards for installation  inside their systems for streaming video.  Additionally,
Philips,  Sony, Panasonic Canada,  Matsushita,  Toshiba,  VideoLogic and several
other companies market DVD kits that include  REALmagic  Hollywood Plus playback
cards,  and several  vendors  base their DVD systems on  REALmagic  DVD playback
cards.


<PAGE>


Acceptance by the Corporate Market

         REALmagic is the most  well-known  and most  recognized  brand name for
MPEG video on PCs. Sigma Designs has developed this brand name through marketing
campaigns and by building a reputation for delivering and supporting inexpensive
MPEG decoders with robust, powerful and flexible software drivers. This has made
Sigma  Designs'  REALmagic the de facto standard for corporate  market  projects
such as corporate-wide rollouts at Merrill Lynch, Smith Barney and Wal-Mart.

REALmagic Business Strategy
    

         Sigma's corporate  objective is to continue to be a leading provider of
MPEG multimedia products that enable full-screen,  full-motion,  TV-like quality
video on the standard  desktop and the notebook PC. To accomplish  this goal the
Company intends to promote widespread  acceptance of REALmagic  technology.  The
key parts of this strategy include:

       

   
Win More OEM Partnerships and Further Penetrate the Corporate Market

         To  establish  REALmagic  for MPEG-2 as a standard,  the  Company  will
continue to seek design wins with major PC manufacturers worldwide, in which the
OEMs will  factory-install  REALmagic boards or chipsets inside their multimedia
PCs. On the retail  side,  the  Company's  systems  integration  sales team will
continue  to work with its network of national  distributors  and special  Value
Added Resellers  (VARs) to distribute its high-end  REALmagic  playback card. In
Europe and Asia Pacific,  the Company will  continue to expand its  relationship
with  distributors as well as OEMs and VARs. In addition,  the Company will seek
to sell  chipsets to add-on card  manufacturers  that will,  in turn,  market to
owners of Pentium PCs.

Introduce New Generations of REALmagic, Offer REALmagic products at Competitive
Prices and Continually Reduce Product Costs

         A significant  aspect of the Company's  product strategy is to increase
the sale of REALmagic  chipsets  while  continuing to develop newer versions and
generations  of  REALmagic  products,  including  chipsets  for both desktop and
notebook PCs. The Company seeks to continue to offer  consumers  better-featured
and lower-priced products over time.
    

REALmagic Products

   
         The Company  currently  offers a complete family of REALmagic  products
including:

     o   REALmagic Hollywood Plus-In April 1997, the Company announced its entry
         into the DVD market. The REALmagic  Hollywood Plus MPEG-2 playback card
         turns a PC into a  full-featured  DVD player that  exploits many of the
         digital video and digital surround sound capabilities of the DVD format
         and upcoming MPEG-2 interactive  titles.  The REALmagic  Hollywood Plus
         DVD/MPEG-2  playback card displays  flicker-free  video at  full-screen
         resolution,  making video watching on a PC a new experience. Movies can
         be simultaneously displayed on the PC monitor and on a large-screen TV.

     o   REALmagic  NetStream 2-In October 1997, the Company announced its entry
         into the MPEG-2  networked  video  market.  Products  in the  NetStream
         family include specialized hardware and software developed specifically
         for  delivering  video to  corporate  desktops and can be used for both


<PAGE>

         video on demand and broadcast video playback.  NetStream 2 is an MPEG-2
         playback   card   offering   full  plug  and  play   installation   and
         compatibility with a broad range of third-party applications, including
         video  servers  for  video on  demand,  MPEG  encoders  for  stored  or
         real-time  playback,   satellite  delivery  systems,   streaming  video
         playback  systems  and  scores  of  customizable  interactive  training
         titles.

     o   REALmagic  EM8300-In March 1998, the Company announced the introduction
         of the EM8300 REALmagic  DVD/MPEG-2/MPEG-1  decoder  Integrated Circuit
         ("IC").  Integrating  virtually  all  functions of a DVD decoder on one
         chip,  the  EM8300 is  designed  to provide a highly  integrated,  cost
         effective vehicle for high-quality DVD. The EM8300 feature set draws on
         Sigma's  industry-leading  experience  in the  DVD/MPEG-2  market  with
         earlier designs such as the REALmagic  Ventura and REALmagic  Hollywood
         decoder cards.  The result is a blend of performance and  affordability
         that can be key to gaining  market  share in the  rapidly  growing  DVD
         market.

     o   REALmagic  EM8220  DVD/MPEG-2 VGA Add-On Card-In June 1998, the Company
         announced  the  introduction  of  a  daughter  card  to  add  to  Intel
         i740-based 2D/3D Video Graphics Array ("VGA") graphics cards to quickly
         and  effectively  deliver   high-performance,   video-ready  multimedia
         systems.

     o   REALmagic  DVD/MPEG-2  Notebook  Module-Designed to connect directly to
         the VGA controller through the ZV-bus and to the system bus through the
         module's  Peripheral  Component  Interconnect  ("PCI")  interface,  the
         notebook module gives notebook users all of the power and impact of DVD
         performance with their go-anywhere systems.

     o   REALmagic  EM8800-In  October 1998, the Company announced the REALmagic
         EM8800  decoder IC, the first  single-chip  PC solution for China's new
         Super Video Compact Disk ("SVCD") standard.  Integrating  virtually all
         SVCD  decoding  functions on one chip,  the EM8800 can turn a PC into a
         full-featured  home  theater  video  player  that  fully  exploits  the
         improved video quality supported by the SVCD standard.
    

Marketing and Sales

   
         Sigma  Designs  currently  distributes  its products  through  sales to
national and regional  distributors,  value-added resellers and OEMs in the U.S.
and throughout the world. The Company's U.S.  distributors include Ingram Micro,
Inc. and Tech Data, and its OEMs include Sony,  Philips,  Panasonic Canada,  IBM
Canada,  Matsushita,  Toshiba, Kapok Computers,  Sidus/TigerDirect,  Inc., Royal
Computer,  ASE Technologies,  LungHwa  Electronics Co., Ltd., Formosa Industrial
Computing,   Labway   Corporation  and  others.   The  Company's   international
distributors are strategically located in many countries around the world.

         The Company generally  acquires and maintains products for distribution
through  corporate  markets based on forecasts rather than firm purchase orders.
Additionally,  the  Company  generally  acquires  products  for  sale to its OEM
customers  only after  receiving  purchase  orders  from such  customers,  which
purchase orders are typically  cancellable without substantial penalty from such
OEM customers.  The Company currently places  noncancellable  orders to purchase
semiconductor products from its suppliers on a twelve- to sixteen-week lead time
basis.  Consequently,  if,  as a result of  inaccurate  forecasts  or  cancelled
purchase  orders,  anticipated  sales and  shipments in any quarter do not occur
when expected,  expenses and inventory levels could be disproportionately  high,
requiring  significant  working  capital and resulting in severe pressure on the
Company's financial condition.


<PAGE>


         Sales to distributors  are typically  subject to contractual  rights of
inventory  rotation and price protection.  Regardless of particular  contractual
rights,  the failure of one or more  distributors  or OEMs to achieve  sustained
sell-through of REALmagic products could result in product returns or collection
problems,  contributing to significant  fluctuations in the Company's  operating
results.
    

Research and Development

   
         As of November  30,  1998,  the Company had a staff of 31 research  and
development  personnel.  The research and development  personnel conduct all the
Company's product  development.  The Company is focusing its development efforts
primarily on MPEG multimedia  products,  including new and improved  versions of
REALmagic MPEG chipsets and cost reduction processes.

         To achieve and  maintain  technological  leadership,  the Company  must
continue to make technological advancements in the areas of MPEG video and audio
compression  and   decompression.   These   advancements   include   maintaining
compatibility   with   emerging   standards  and  multiple   platforms,   making
improvements to the REALmagic  architecture,  and developing enhancements to the
REALmagic Application Programming Interface (API).
    

         There can be no  assurance  that the  Company  will be able to make any
such  advancements  in the REALmagic MPEG  technology or, if they are made, that
the Company will be able to market such  advancements to maintain  profitability
and its technological leadership.

   
         During fiscal 1998, fiscal 1997 and fiscal 1996, the Company's research
and   development   expenses  were   $4,948,000,   $4,688,000  and   $4,499,000,
respectively.  The Company plans to continue to devote substantial  resources to
research and  development  of future  generations  of MPEG and other  multimedia
products.
    

Competition

   
         The  market  for  MPEG  multimedia   products  is  highly  competitive;
companies  such as C-Cube  Microsystems  have a high  profile  in the  industry.
Although the Company  does not believe  that any products  sold by a third party
are in direct competition with the REALmagic decoding card in terms of price and
performance,  the  possibility  that other  companies  with more  marketing  and
financial  resources  may  develop a  competitive  product  may inhibit the wide
acceptance  of REALmagic  technology.  The Company  believes  that many computer
product  manufacturers  are developing MPEG products that will compete  directly
with REALmagic products in the near future.

         The Company  believes  that the  principal  competitive  factors in the
market for MPEG  multimedia  hardware  products  include  time to market for new
product   introductions,   product  performance,   compatibility  with  industry
standards,  price and marketing and distribution resources. The Company believes
that it  competes  most  favorably  with  respect  to time  to  market,  product
performance and price of its REALmagic products.  Moreover, the Company believes
that the  acceptance of the  REALmagic API as an industry  standard for software
development could provide a significant  competitive  advantage for the Company.
However, there can be no assurance that the REALmagic API will be established as
an industry  standard or that the  Company's  lead time in product  introduction
will be sustained.


<PAGE>


Licenses, Patents and Trademarks

         The  Company is seeking  patent  protection  for certain  software  and
hardware  features in current  and future  versions  of  REALmagic.  The Company
currently has fifteen pending patent applications for its REALmagic  technology.
Ten patents have been issued to the Company. There can be no assurance that more
patents  will be issued or that  such  patents,  even if  issued,  will  provide
adequate  protection for the Company's  competitive  position.  The Company also
attempts to protect its trade secrets and other proprietary  information through
agreements with customers,  suppliers and employees and other security measures.
Although the Company intends to protect its rights  vigorously,  there can be no
assurance that these measures will be successful.
    

Manufacturing

   
         To  reduce   overhead   expenses,   along  with  capital  and  staffing
requirements,  the Company currently uses third-party contract  manufacturers to
fulfill  all of its  manufacturing  needs,  including  chipset  manufacture  and
board-level  assembly.  All of the chips  used by the  Company  to  develop  its
decoding products are manufactured by outside  suppliers and foundries.  Each of
these  suppliers  is a sole  source of supply to the  Company of the  respective
chips produced by such supplier.
    

         The Company's reliance on independent suppliers involves several risks,
including  the absence of adequate  capacity and reduced  control over  delivery
schedules,  manufacturing  yields and costs.  Any delay or  interruption  in the
supply  of any of the  components  required  for  the  production  of  REALmagic
products  could have a  material  adverse  impact on the sales of the  Company's
products and, thus, on the Company's operating results.

Backlog

   
         Since the Company's  customers  typically expect quick deliveries,  the
Company  seeks to ship  products  within a few weeks of  receipt  of a  purchase
order.  However,  the customer may reschedule delivery of products or cancel the
purchase order entirely without significant penalty. Historically, the Company's
backlog has not been  reflective of future sales.  The Company also expects that
in the near term,  its  backlog  will  continue to be not  indicative  of future
sales.

         As of  November  30,  1998,  the Company  had 71  full-time  employees,
including 31 in research and development, 15 in marketing, sales and support, 10
in operations, and 15 in finance and administration.
    

         The Company's  future  success will depend,  in part, on its ability to
continue to attract, retain and motivate highly qualified technical,  marketing,
engineering  and management  personnel,  who are in great demand.  The Company's
employees are not represented by any collective bargaining unit, and the Company
has never  experienced a work stoppage.  The Company  believes that its employee
relations are satisfactory.

       

   
                                 USE OF PROCEEDS

         The  Company  will not  receive  any  proceeds  from the sale of shares
hereunder by KA Investments LDC.


<PAGE>


                               SELLING SHAREHOLDER

         On March 11, 1998, the Company, Banque Edouard Constant SA ("BEC"), and
KA Investments  LDC entered into an Assignment and  Assumption  Agreement  under
which KA Investments  LDC purchased from BEC 15,000 shares of Series A Preferred
Stock  convertible  into shares of Common  Stock and a Warrant  exercisable  for
21,428  shares  of  Common  Stock  (the  "Warrant").  The  Company  and  BEC had
previously   entered  into  a  Series  A  Preferred  Stock  Private   Securities
Subscription  Agreement  dated as of June 25, 1997,  under which BEC purchased a
warrant  exercisable for 57,142 shares of Common Stock beginning April 30, 1998,
and 40,000 shares of Series A Preferred  Stock. The Series A Preferred Stock and
Warrant now held by KA  Investments  LDC is subject to the terms of the June 25,
1997 Series A Preferred  Stock  Private  Securities  Subscription  Agreement,  a
Certificate of Determination of Preferences filed in connection with the initial
issuance of the Series A Preferred Stock, and a Registration Rights Agreement.

         In  accordance  with  the  Assignment  and  Assumption  Agreement,   KA
Investments LDC obtained certain  registration  rights relating to the shares of
Series  A  Preferred  Stock  and  the  Warrant  under  the  Registration  Rights
Agreement.  This  Registration  Statement has been filed by the Company with the
Securities and Exchange  Commission  pursuant to the terms of the Assignment and
Assumption Agreement.

<TABLE>
         The  following  table sets forth  certain  information  with respect to
beneficial  ownership of the Company's Common Stock as of December 7, 1998 by KA
Investments LDC as follows:  (i) the name of the Selling  Shareholder;  (ii) the
number of the Company's outstanding shares of Common Stock beneficially owned by
Selling  Shareholder  (including  shares  obtainable  under options  exercisable
within  sixty (60) days of such date) prior to the  offering  hereby;  (iii) the
number of shares of Common Stock being  offered  hereby;  and (iv) the number of
and  percentage  of the  Company's  outstanding  shares  of  Common  Stock to be
beneficially  owned by such Selling  Shareholder after completion of the sale of
Common  Stock.  Except as indicated in the  footnotes to this table,  the person
named in the table has sole  voting and  investment  power  with  respect to all
shares of Common Stock shown as  beneficially  owned by it, subject to community
property  laws  where  applicable.  The  Selling  Shareholder  has not  held any
position or office or had a material relationship with the Company or any of its
affiliates within the past three years.

<CAPTION>

                                                                Number of Shares of Common Stock
                                          ----------------------------------------------------------------------------
                                                                                                    Beneficially
                                                                                               Owned After Offering(1)
                                                 Beneficially            Being Offered   -----------------------------
       Name and Address                   Owned Prior to Offering(1)     hereby                Number         Percent
- -------------------------------------    -----------------------------  ----------------------------------------------
<S>                                        <C>                                <C>              <C>            <C>
KA Investments  LDC                        402,254 (2)                        100,000          0(3)(4)        0(3)(4)
     c/o Tarmachan Capital Management
     1712 Hopkins Crossroads
     Minnetonka, Minnesota 55305

<PAGE>
<FN>

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


(1)  The number and percentage of shares  beneficially owned is determined under
     rules of the Securities and Exchange Commission, and the information is not
     necessarily indicative of beneficial ownership for any other purpose. Under
     such  rules,  beneficial  ownership  includes  any  shares  as to which the
     individual has sole or shared voting power or investment power and also any
     shares which the individual has the potential right to acquire within sixty
     (60) days of the Offering  through the conversion of the shares of Series A
     Preferred Stock or the exercise of warrants.

(2)  Includes the number of shares of Common Stock (i) issued upon conversion of
     shares of Series A Preferred  Stock and (ii)  issuable upon exercise of the
     Warrant  to  purchase  21,428  shares of Common  Stock.  Also  includes  an
     indeterminate  number of shares of Common Stock that may become issuable to
     prevent  dilution   resulting  from  stock  splits,   stock  dividends  and
     Conversion Price or exercise price adjustments, which are included pursuant
     to Rule 416 under the Securities Act of 1933, as amended.

(3)  Assumes sale of all shares of Common Stock offered hereby.

(4)  Includes shares of Common Stock to be sold outside of this Prospectus.
</FN>
</TABLE>
    


<PAGE>


                              PLAN OF DISTRIBUTION

   
         KA Investments LDC may, from time to time, sell all or a portion of the
shares on the  Nasdaq  Stock  Market in  privately  negotiated  transactions  or
otherwise,  at fixed prices that may be changed,  at market prices prevailing at
the time of sale,  at prices  related  to such  market  prices or at  negotiated
prices.  The  shares  may be  sold by KA  Investments  LDC by one or more of the
following methods,  without limitation:

(a) block  trades in which the broker or dealer so engaged  will attempt to sell
the  shares  as agent but may  position  and  resell a  portion  of the block as
principal to facilitate the transaction,  (b) purchases by a broker or dealer as
principal  and resale by such broker or dealer for its account  pursuant to this
Prospectus,  (c) an exchange  distribution  in accordance with the rules of such
exchange,  (d) ordinary  brokerage  transactions  and  transactions in which the
broker solicits  purchasers,  (e) privately negotiated  transactions,  (f) short
sales,  and (g) a combination  of any such methods of sale. In effecting  sales,
brokers and dealers  engaged by KA Investments LDC may arrange for other brokers
or  dealers  to  participate.  Brokers or dealers  may  receive  commissions  or
discounts from KA Investments LDC (or, if any such  broker-dealer  acts as agent
for the  purchaser  of such  shares,  from  such  purchaser)  in  amounts  to be
negotiated  which are not  expected to exceed  those  customary  in the types of
transactions  involved.  Broker-dealers may agree with the KA Investments LDC to
sell a specified number of such shares at a stipulated price per share,  and, to
the  extent  such  broker-dealer  is  unable  to do so  acting as agent for a KA
Investments  LDC,  to  purchase  as  principal  any  unsold  shares at the price
required  to  fulfill  the  broker-dealer  commitment  to  KA  Investments  LDC.
Broker-dealers who acquire shares as principal may thereafter resell such shares
from time to time in  transactions  (which may involve  block  transactions  and
sales to and through other broker-dealers,  including transactions of the nature
described  above) in the  over-the-counter  market or otherwise at prices and on
terms  then  prevailing  at the time of sale,  at  prices  then  related  to the
then-current market price or in negotiated  transactions and, in connection with
such  resales,  may  pay to or  receive  from  the  purchasers  of  such  shares
commissions as described  above.  KA Investments LDC may also sell the shares in
accordance  with Rule 144 under the Securities Act, rather than pursuant to this
Prospectus.

         KA Investments LDC and any  broker-dealers  or agents that  participate
with  KA  Investments   LDC  in  sales  of  the  shares  may  be  deemed  to  be
"underwriters" withing the meaning of the Securities Act in connection with such
sales. In such event, any commissions  received by such broker-dealers or agents
and any profit on the resale of the shares purchased by them may be deemed to be
underwriting commissions or discounts under the Securities Act.

         From time to time KA Investments  LDC may engage in short sales,  short
sales  against the box, puts and calls and other  transactions  in securities of
the  Company or  derivatives  thereof,  and may sell and  deliver  the shares in
connection therewith or in settlement of securities loans. If KA Investments LDC
engages in such transaction,  the Conversion Price may be affected. From time to
time KA Investments LDC may pledge its shares pursuant to the margin  provisions
of its customer  agreements  with its brokers.  Upon a default by KA Investments
LDC, the broker may offer and sell the pledged shares from time to time.

         The Company is required  to pay all fees and  expenses  incident to the
registration  of the shares,  including  one half of any fees and  disbursements
(which  half  is  not to  exceed  an  aggregate  of  $5,000)  of  counsel  to KA
Investments  LDC. The Company has agreed to indemnify KA Investments LDC against
certain losses, claims, damages and liabilities, including liabilities under the
Securities Act.
    


<PAGE>


                                  LEGAL MATTERS

         Certain  legal  matters  relating  to  validity of the shares of Common
Stock  offered  hereby  will be passed  upon for the  Company by Wilson  Sonsini
Goodrich & Rosati, Professional Corporation, Palo Alto, California.


                                     EXPERTS
   
         The  consolidated   financial  statements  and  the  related  financial
statement  schedule  incorporated  in this  prospectus  by  reference  from  the
Company's  Annual Report on Form 10-K for the fiscal year ended January 31, 1998
have been audited by Deloitte & Touche LLP, independent  auditors,  as stated in
their  report,  which is  incorporated  herein  by  reference,  and have been so
incorporated in reliance upon the report of such firm given upon their authority
as experts in accounting and auditing. 
    



<PAGE>


                                TABLE OF CONTENTS

                                                                            Page

   
Available Information..........................................................2
Incorporation of Certain Documents by Reference................................3
Risk Factors...................................................................3
The Company...................................................................10
Use of Proceeds...............................................................15
Selling Shareholder...........................................................16
Plan of Distribution..........................................................18
Legal Matters.................................................................19
Experts.......................................................................19


     You should rely on the information  contained in this  Prospectus.  We have
not  authorized  anyone to  provide  you with  information  different  from that
contained in this Prospectus. We are offering to sell and seeking offers to buy,
shares  of  Common  Stock  only in  jurisdictions  where  offers  and  sales are
permitted.  The information  contained in this Prospectus is accurate only as of
the  date  of this  Prospectus,  regardless  of the  time  of  delivery  of this
Prospectus or of any sale of the Common Stock.

         In this Prospectus, the "Company," "Sigma," "we," "us," and "our" refer
to Sigma Designs, Inc.


<PAGE>


                                 900,000 Shares
    

                               SIGMA DESIGNS, INC.

                                  Common Stock

                                  ------------
                                   PROSPECTUS
                                  ------------

   
                                December 11, 1998
    


<PAGE>


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.   Other Expenses of Issuance and Distribution

   
         The  following  table  sets  forth the costs and  expenses,  other than
underwriting  discounts and commissions,  payable in connection with the sale of
Common Stock being  registered.  All amounts are estimates except the Securities
and Exchange  Commission  registration  fee and the Nasdaq Stock Market  Listing
Fee.
    

Securities and Exchange Commission Registration Fee......................$   817
Nasdaq National Market Listing Fee....................................... 17,500
Legal Fees and Expenses.................................................. 60,000
Accounting Fees and Expenses............................................. 10,000
Blue Sky Fees and Expenses...............................................  2,500
Transfer Agent and Registrar Fees........................................  5,000
Miscellaneous............................................................  1,500
         Total...........................................................$97,317

Item 15.   Indemnification of Directors and Officers

         Section 317 of the California  Corporations  Code authorizes a court to
award or a corporation's  Board of Directors to grant indemnity to directors and
officers  in terms  sufficiently  broad to  permit  such  indemnification  under
certain  circumstances  for liabilities  (including  reimbursement  for expenses
incurred)


<PAGE>


arising under the Securities Act. Article IV of the Registrant's Second Restated
Articles of Incorporation and Article VI of the Registrant's  Bylaws provide for
indemnification  of its directors,  officers,  employees and other agents to the
maximum extent permitted by the California  Corporations Code. In addition,  the
Registrant  has entered into  Indemnification  Agreements  with its officers and
directors.

         Insofar as indemnification for liabilities arising under the Securities
Act  may  be  permitted  to  directors,  officers  or  persons  controlling  the
Registrant pursuant o the foregoing provisions, the Registrant has been informed
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.

Item 16.   Exhibits and Financial Statement Schedules

         (a)   EXHIBITS

   
                  4.1*    Form of  Subscription  Agreement  by and  between  the
                          Company  and the  initial  purchasers  of the Series A
                          Preferred Stock and warrants.
                  4.2*    Form of Registration  Rights  Agreement by and between
                          the Company and the initial purchasers of the Series A
                          Preferred Stock and warrants.
                  4.3**   Assignment and  Assumption  Agreement by and among the
                          Company, BEC and KA Investments LDC.
                  4.4**   Form of Stock Purchase Warrant.
                  5.1     Opinion   of  Wilson   Sonsini   Goodrich   &  Rosati,
                          Professional Corporation, counsel for the Registrant.
                  23.1    Independent Auditors' Consent.
                  23.2    Consent   of  Wilson   Sonsini   Goodrich   &  Rosati,
                          Professional  Corporation,  counsel for the Registrant
                          (included in Exhibit 5.1). 
                  24.1**  Power of Attorney.
    

*    Incorporated by reference to Registration  Statement No. 333-33147  (filed
     August 7, 1997).

   
**   Previously filed.
    

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

         Schedules  not listed  above  have been  omitted  because  they are not
applicable  or are not  required  or the  information  required  to be set forth
therein is included in the consolidated financial statements or notes thereto.

                                      II-2


<PAGE>


Item 17.   Undertakings

         Insofar as  indemnification  by the Registrant for liabilities  arising
under the Securities Act may be permitted to directors, officers and controlling
persons of the Registrant  pursuant to the foregoing  provisions,  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.  In the event that 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  hereunder,  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.

         The undersigned Registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a  post-effective  amendment  to this  Registration  Statement  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.

   
         (2)  That,  for the  purpose  of  determining  any  ability  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 that time shall be deemed to be the initial bona
fide offering thereof.
    

         (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.

         The  undersigned  Registrant  hereby  undertakes  that, for purposes of
determining  any  liability  under  the  Securities  Act,  each  filing  of  the
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.

       

                                      II-3

<PAGE>

                                   SIGNATURES

   
         Pursuant  to the  requirements  of the  Securities  Act  of  1933,  the
Registrant  has duly  caused  this  Registration  Statement  to be signed on its
behalf by the undersigned,  thereunto duly  authorized,  in the City of Fremont,
State of California, on the 11th day of December 1998.

    


                                                        SIGMA DESIGNS, INC.

                                                        By: /s/ Thinh Q.  Tran
                                                        ------------------------
                                                        Thinh Q.  Tran
                                                        Chairman of the Board,
                                                        President and Chief
                                                        Executive Officer

       

<TABLE>
         PURSUANT  TO THE  REQUIREMENTS  OF THE  SECURITIES  ACT OF  1933,  THIS
REGISTRATION  STATEMENT  HAS  BEEN  SIGNED  BY  THE  FOLLOWING  PERSONS  IN  THE
CAPACITIES AND ON THE DATE INDICATED:

<CAPTION>
              SIGNATURE                                   TITLE                                           DATE
<S>                                         <C>                                                        <C>
   
/s/  Thinh Q.  Tran                         Chairman of the Board, President and Chief                 December 11, 1998
- --------------------------------------      Executive Officer (Principal Executive Officer)
     Thinh Q.  Tran

     Kit Tsui*                              Director of Finance, Chief Financial Officer,              December 11, 1998
- --------------------------------------      Secretary (Chief Financial and Accounting Officer)
     Kit Tsui

     William J.  Almon*                     Director                                                   December 11, 1998
- --------------------------------------
     William J.  Almon

     William Wang*                          Director                                                   December 11, 1998
- --------------------------------------
     William Wang

*By: /s/ Thinh Q. Tran                                                                                 December 11, 1998
- --------------------------------------
     Attorney-in-Fact
    

</TABLE>

                                      II-4

<PAGE>


                                  EXHIBIT INDEX

EXHIBIT NUMBER
- --------------


      4.1*             Form of Subscription Agreement by and between the Company
                       and the  initial  purchasers  of the  Series A  Preferred
                       Stock and warrants.

      4.2*             Form of Registration  Rights Agreement by and between the
                       Company  and  the  initial  purchasers  of the  Series  A
                       Preferred Stock and warrants.

   
      4.3**            Assignment  and  Assumption  Agreement  by and  among the
                       Company, BEC and KA Investments LDC.

      4.4**            Form of Stock Purchase Warrant.
    

      5.1              Opinion of Wilson Sonsini Goodrich & Rosati, Professional
                       Corporation, counsel for the Registrant.

      23.1             Independent Auditors' Consent.

      23.2             Consent of Wilson Sonsini Goodrich & Rosati, Professional
                       Corporation,  counsel  for the  Registrant  (included  in
                       Exhibit 5.1).

   
      24.1**           Power of Attorney.  (See page II-4).
    


*    Incorporated by reference to Registration  Statement No.  333-33147  (filed
     August 7, 1997).

   
**   Previously filed.
    


                                      II-5

       

   
                                                                     Exhibit 5.1


                               December 10, 1998



Sigma Designs, Inc.
46501 Landing Parkway
Fremont, CA  94538

         RE:      SIGMA DESIGNS, INC. REGISTRATION STATEMENT ON FORM S-3

Ladies and Gentlemen:

         We have examined  Post-Effective  Amendment  No. 1 to the  Registration
Statement  on Form  S-3 to be filed by you  with  the  Securities  and  Exchange
Commission on December 10, 1998 (the  "Registration  Statement"),  in connection
with the registration  under the Securities Act of 1933, as amended,  of 900,000
shares of your  Common  Stock,  no par value  (the  "Shares"),  all of which are
authorized  and will be  issued to the  selling  shareholder  identified  in the
Registration Statement (the "Selling Shareholder"). The Shares are to be offered
by  the  Selling  Shareholder  for  sale  to  the  public  as  described  in the
Registration Statement. As your counsel in connection with this transaction,  we
have examined the proceedings  taken and proposed to be taken in connection with
the sale of the Shares.

         It is our opinion that, upon completion of the proceedings  being taken
or contemplated to be taken prior to the  registration of the Shares,  including
such proceedings to be carried out in accordance with the securities laws of the
various states,  where required,  the Shares when sold in the manner referred to
in the Registration  Statement,  will be legally and validly issued,  fully paid
and nonassessable.

         We consent to the use of this opinion as an exhibit to the Registration
Statement,  and  further  to the  use  of our  name  wherever  appearing  in the
Registration  Statement,  including the Prospectus  constituting a part thereof,
any amendment thereto.

                                            Very truly yours,

                                            /s/ Wilson Sonsini Goodrich & Rosati
                                            ------------------------------------
                                            WILSON SONSINI GOODRICH & ROSATI
                                            Professional Corporation
    



                                                                    Exhibit 23.1


                          INDEPENDENT AUDITORS' CONSENT


   
         We consent to the  incorporation  by reference  in this  Post-Effective
Amendment No. 1 to Registration  Statement  333-48023 of Sigma Designs,  Inc. on
Form S-3 of our report dated  February 26, 1998,  appearing in the Annual Report
on Form 10-K of Sigma  Designs,  Inc. for the year ended January 31, 1998 and to
the reference to us under the heading "Experts" in the Prospectus, which is part
of this Registration Statement.


DELOITTE & TOUCHE LLP
San Jose, California
December 9, 1998
    



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