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): May 1, 2001


             (Exact name of registrant as specified in its charter)

          Delaware                       0-25346                 47-0772104
(State or other jurisdiction of        (Commission            (I.R.S. Employer
incorporation or organization)         File Number)          Identification No.)

                 224 South 108th Avenue, Omaha, Nebraska 68154
          (Address of principal executive offices, including zip code)

                                 (402) 334-5101
              (Registrant's telephone number, including area code)


                              ITEM 5. OTHER EVENTS.

     On May 1, 2001, the registrant issued a news release announcing that it has
initiated  an  external  search  for a new chief  executive  officer  due to the
resignation of Mr. William E. Fisher,  Chairman of the Board and Chief Executive
Officer,  from both of his  positions.  Mr. Larry G.  Fendley,  a current  Board
member,  assumed  the role of interim  CEO during an  executive  search  period,
effective May 1, 2001.  Mr. Gregory J. Duman,  also a current Board member,  was
appointed as Chairman of the Board.

     On May 9, 2001, the registrant  issued a news release  announcing  that Mr.
David C.  Russell,  President,  resigned  his  position  and will be leaving the


     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.

                                   TRANSACTION SYSTEMS ARCHITECTS, INC.

Dated:  May 15, 2001               By: /s/ DWIGHT G. HANSON
                                          Dwight G. Hanson
                                          Chief Financial Officer, Treasurer
                                          and Senior Vice President