content: <PAGE>
  
  
                         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
  
  <TABLE>
  <CAPTION>
  <S>                                                                             <C>
  
  Date of Report (date of earliest event reported)                                April 1, 2002
                                                    -----------------------------------------------------------------
  
  
                                                   TIBCO Software Inc.
  -------------------------------------------------------------------------------------------------------------------
                                 (Exact name of registrant as specified in its charter)
  
  
               Delaware                                 000-26579                                 77-0449727
  --------------------------------               ----------------------                   ---------------------------
  (State or other jurisdiction                         (Commission                               (IRS Employer
           of incorporation)                          File Number)                            Identification No.)
  
  
  
                                                   3165 Porter Drive
                                             Palo Alto, California 94304
                                             ---------------------------
                                        (Address of principal executive offices)
                                                   (Zip Code)
  
  Registrant's telephone number, including area code:                               (650) 846-1000
                                                            ---------------------------------------------------------
  
  
                                                    Not Applicable
  -------------------------------------------------------------------------------------------------------------------
                               (Former name or former address, if changed since last report)
  </TABLE>
  
  
  
  
  
  <PAGE>
  
  Item 5. Other Events
          ------------
  
       On April 1, 2002, TIBCO Software Inc., a Delaware corporation ("TIBCO") and
                                                                       -----
  Talarian Corporation, a Delaware corporation ("Talarian"), issued a joint press
                                                 --------
  release announcing the termination of the applicable waiting period under
  Hart-Scott-Rodino Antitrust Improvements Act of 1976 in connection with the
  proposed merger of a subsidiary of TIBCO with Talarian pursuant to that certain
  Agreement and Plan of Merger, dated as of January 4, 2002, by and among TIBCO,
  Panther Acquisition Corp. and Talarian. The joint press release is filed as an
  exhibit to this report.
  
  Item 7. Financial Statements and Exhibits
          ---------------------------------
  
          (c)  Exhibits
               --------
  
               99.1   Press Release dated April 1, 2002.
  
  
  
  
                                         -2-
  
  
  <PAGE>
  
                                      SIGNATURE
  
  
  
       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 hereunto duly authorized.
  
  Dated:  April 3, 2002
  
                                            TIBCO SOFTWARE INC.
  
  
  
                                            By: /s/ Robert P. Stefanski
                                                ----------------------------------
                                                Robert P. Stefanski
                                                Executive Vice President, General
                                                Counsel and Secretary
  
  
  
                                         -3-
  
  
  <PAGE>
  
  
                                  INDEX TO EXHIBIT
  
  
     Exhibit
      Number                          Description of Exhibit
    ----------     ------------------------------------------------------------
  
      99.1          Press Release dated April 1, 2002.
metadata_documents: [{"type": "8-K", "sequence": "1", "filename": "d8k.txt", "description": "FORM 8-K", "secsgml_size_bytes": 4180}]
metadata_filer: {"company-data": {"conformed-name": "TIBCO SOFTWARE INC", "cik": "0001085280", "assigned-sic": "7373", "irs-number": "770449727", "state-of-incorporation": "DE", "fiscal-year-end": "1130"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-26579", "film-number": "02601043"}, "business-address": {"street1": "3165 PORTER DRIVE", "city": "PALO ALTO", "state": "CA", "zip": "94304", "phone": "6508465000"}, "mail-address": {"street1": "3165 PORTER DRIVE", "city": "PALO ALTO", "state": "CA", "zip": "94304"}}
text: 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)                                April 1, 2002
                                                    -----------------------------------------------------------------
  
                                                   TIBCO Software Inc.
  -------------------------------------------------------------------------------------------------------------------
                                 (Exact name of registrant as specified in its charter)
  
               Delaware                                 000-26579                                 77-0449727
  --------------------------------               ----------------------                   ---------------------------
  (State or other jurisdiction                         (Commission                               (IRS Employer
           of incorporation)                          File Number)                            Identification No.)
  
                                                   3165 Porter Drive
                                             Palo Alto, California 94304
                                             ---------------------------
                                        (Address of principal executive offices)
                                                   (Zip Code)
  
  Registrant's telephone number, including area code:                               (650) 846-1000
                                                            ---------------------------------------------------------
  
                                                    Not Applicable
  -------------------------------------------------------------------------------------------------------------------
                               (Former name or former address, if changed since last report)
  Item 5. Other Events
          ------------
  
       On April 1, 2002, TIBCO Software Inc., a Delaware corporation ("TIBCO") and
                                                                       -----
  Talarian Corporation, a Delaware corporation ("Talarian"), issued a joint press
                                                 --------
  release announcing the termination of the applicable waiting period under
  Hart-Scott-Rodino Antitrust Improvements Act of 1976 in connection with the
  proposed merger of a subsidiary of TIBCO with Talarian pursuant to that certain
  Agreement and Plan of Merger, dated as of January 4, 2002, by and among TIBCO,
  Panther Acquisition Corp. and Talarian. The joint press release is filed as an
  exhibit to this report.
  
  Item 7. Financial Statements and Exhibits
          ---------------------------------
  
          (c)  Exhibits
               --------
  
               99.1   Press Release dated April 1, 2002.
  
                                         -2-
  SIGNATURE
  
       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 hereunto duly authorized.
  
  Dated:  April 3, 2002
  
                                            TIBCO SOFTWARE INC.
  
                                            By: /s/ Robert P. Stefanski
                                                ----------------------------------
                                                Robert P. Stefanski
                                                Executive Vice President, General
                                                Counsel and Secretary
  
                                         -3-
  INDEX TO EXHIBIT
  
     Exhibit
      Number                          Description of Exhibit
    ----------     ------------------------------------------------------------
  
      99.1          Press Release dated April 1, 2002.