Filed Pursuant to Rule 424(b)(3)
Registration No. 333-83690

PROSPECTUS SUPPLEMENT NO. 4
TO PROSPECTUS DATED JUNE 7, 2002
WIND RIVER SYSTEMS, INC.
$150,000,000
3.75% Convertible Subordinated Notes due 2006 and
Shares of Common Stock Issuable Upon Conversion Thereof

        This prospectus supplement relates to the resale by the selling security holders of 3.75% Convertible Subordinated Notes due December 15, 2006 issued by Wind River Systems, Inc. and the shares of shares of common stock issuable upon conversion of the notes.

        This prospectus supplement should be read in conjunction with the prospectus dated June 7, 2002, which is to be delivered with this prospectus supplement. This prospectus supplement is not complete without, and may not be delivered or utilized except in connection with, the prospectus, including any amendments or supplements to it.

        The table under the caption "Selling Security Holders" on page 20 of the prospectus is hereby amended to update information regarding the security holder identified in the table below.

 
    
    
    
  

Common Stock Owned
Upon
Completion of the
Offering
 
   Principal
Amount at
Maturity of
Notes
Beneficially
Owned and
Offered
    
    
 
   Shares of
Common Stock
Beneficially
Owned Before
the Offering (1)
    
Name
   Conversion
Shares Offered
(2)
   Number of
Shares
   Percentage
Deutsche Bank Securities Inc. (3)   $ 30,010,000   —   1,244,454   —   —
(1)
Figures in this column do not include the shares of common stock issuable upon conversion of the notes offered hereby and listed in the column to the right.

(2)
Assumes conversion of the full amount of the notes held by the holder at an initial conversion price of $24.115 per share.

(3)
Selling security holder is also a registered broker-dealer and therefore is an "underwriter" within the meaning of the Securities Act of 1933, as amended.

        Information concerning the selling security holder listed above is based upon information provided to us by the selling security holder as of August 19, 2002. Information about the selling security holder may change over time. Any changed information will be set forth in prospectus supplements and/or amendments. The selling security holder listed in the table above may have sold or transferred, in transactions exempt from the registration requirements of the Securities Act of 1933, as amended, some or all of its notes since the date on which the information in the table is presented. In addition, the per share conversion price and therefore the number of shares of common stock issuable upon conversion or redemption of the notes are subject to adjustment. See "Description of the Notes" on page 26 of the prospectus. As a result, the aggregate principal amount of notes and the number of shares of common stock issuable upon conversion or redemption may increase or decrease.

        Investing in our common stock or the notes involves a high degree of risk. Please carefully consider the "Risk Factors" beginning on page 6 of the prospectus, as well as the section entitled "Factors That May Affect Future Results" included in our recent quarterly and annual reports filed with the Securities and Exchange Commission.

        Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus supplement is August 28, 2002.