QuickLinks -- Click here to rapidly navigate through this document

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549



FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 17, 2003

USA INTERACTIVE
(Exact name of Registrant as specified in charter)

Delaware
(State or other jurisdiction
of incorporation)
  0-20570
(Commission
File Number)
  59-2712887
(IRS Employer
Identification No.)


152 West 57th Street, New York, NY 10019
(Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code: (212) 314-7300





ITEM 2.    ACQUISITION OR DISPOSITION OF ASSETS

        On January 17, 2003, USA Interactive ("USA" or the "Company") completed its acquisition of the outstanding shares of Ticketmaster that it did not already own through the merger of a wholly owned subsidiary of USA with Ticketmaster, with Ticketmaster surviving as a wholly owned subsidiary of USA. In the merger, each outstanding share of Ticketmaster Class A common stock and Ticketmaster Class B common stock (other than shares held by USA, Ticketmaster and their subsidiaries) was converted into the right to receive 0.935 of a share of USA common stock. Please see the full text of the Company's press release, filed as exhibit 99.1 hereto, which is incorporated herein by reference.

        USA filed a registration statement on Form S-4 (file no. 333-101199), as amended, registering under the Securities Act of 1933, as amended, the shares of USA common stock issued in the Ticketmaster transaction. The registration statement contains additional information about the transaction.


ITEM 7.    FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS



99.1

 

Press Release dated January 17, 2003.

2



SIGNATURES

        Pursuant to the requirements 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.

    USA INTERACTIVE

 

 

By:

/s/  
DARA KHOSROWSHAHI      
Name:  Dara Khosrowshahi
Title:    Executive Vice President and
              Chief Financial Officer

Date: January 17, 2003




EXHIBIT INDEX

Exhibit No.

  Description
99.1   Press Release dated January 17, 2003.



QuickLinks

SIGNATURES
EXHIBIT INDEX