<PAGE>

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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

                                   FORM 10-K/A
(Mark One)
[X]  Annual Report pursuant to Section 13 or 15(d) of the Securities Exchange
     Act of 1934. For the Fiscal year ended June 30, 1994.
[ ]  Transition report pursuant to Section 13 or 15(d) of the Securities
     Exchange Act of 1934 .  For the transition period from      to      .

                         Commission File Number 1-10441

                             SILICON GRAPHICS, INC.
             (Exact name of registrant as specified in its charter)

               DELAWARE                                94-2789662
     (State or Other Jurisdiction of              (I.R.S. Employer
     Incorporation or Organization)               Identification Number)

      2011 North Shoreline Boulevard, Mountain View, California 94043-1389
              (Address of principal executive offices and zip code)

       Registrant's telephone number, including area code:  (415) 960-1980

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

           Securities registered pursuant to Section 12(b) of the Act:

                                             NAME OF EACH EXCHANGE
     TITLE OF EACH CLASS                      ON WHICH REGISTERED:
     -------------------                      --------------------
Common Stock, $0.001 par value               New York Stock Exchange  
Preferred Share Purchase Rights              New York Stock Exchange

     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.   Yes  X  No      
                                                ---    ---
     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amend-ment to
this Form 10-K.  [ X ]

     The aggregate market value of the registrant's voting stock held by non-
affiliates of the registrant, based upon the closing sale price of the Common
Stock on September 2, 1994 on the New York Stock Exchange as reported in The
Wall Street Journal, was approximately $3,464 million.  Shares of voting stock
held by each executive officer and director and by each person who owns 5% or
more of any class of registrant's voting stock have been excluded in that such
persons may be deemed to be affiliates.  This determination of affiliate status
is not necessarily a conclusive determination for other purposes.

AS OF SEPTEMBER 2, 1994, THE REGISTRANT HAD OUTSTANDING 141,104,197 SHARES OF
COMMON STOCK.

                      DOCUMENTS INCORPORATED BY REFERENCE

     Parts of the following documents are incorporated by reference to Parts II,
III and IV of this Form 10-K Report: (1) Proxy Statement for registrant's Annual
Meeting of Stockholders to be held November 1, 1994 (Part III), and (2)
registrant's Annual Report to Stockholders for the fiscal year ended June 30,
1994 (Parts II and IV).

<PAGE>

     This Amendment No. 1 to the Annual Report on Form 10-K for the period ended
June 30, 1994 includes a financial data schedule that has been restated as the
result of the June 15, 1995 mergers of Silicon Graphics, Inc., Alias Research
Inc. and Wavefront Technologies, Inc. which have been accounted for as pooling
of interests.



     Item 14(a)(3) is hereby amended as follows:

          Exhibits
          --------

          27.1           Restated Financial Data Schedule.




                                   SIGNATURES


     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this Report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                     SILICON GRAPHICS, INC.


                                     By: /s/ William M. Kelly
                                        ----------------------------------------
                                        William M. Kelly, Senior Vice President,
                                        General Counsel and Secretary

Dated:  February 7, 1997
                --