SEC FORM 4 Subject to Section 16? 1. Name and Address of Reporting Person Name: Derkacht, Gregory D. Address: 2441 South 191 Circle Omaha, NE 68130 2. Issuer Name and Ticker or Trading Symbol Issuer Name: Transaction Systems Architects, Inc. Ticker/Trading Symbol: TSAI 3. I.R.S. Identification Number of Reporting Person, in an entity: 4. Statement for Month/Year: 03/13/2003 5. If Amendment, Date of Original (Month/Year): 6. Relationship of Reporting Person(s) to Issuer: If Officer, please specify title: If Other, please specify: Director, CEO and President 7. Individual or Joint/Group Filing: Individual Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1. Title of Security: Class A Common Stock 2. Transaction Date (Month/Day/Year): 03/13/2003 3. Transaction Code: P Transaction Code V: 4. Securities Acquired (A) or Disposed (D) of, AMOUNT: A, 6.00 Securities Acquired (A) or Disposed (D): Securities Acquired or Disposed of, PRICE: 5. Amount of Securities Beneficially Owned at the end of the month: 4,000 6. Ownership Form: Direct (D) or Indirect (I): D 7. Nature of Indirect Beneficial Ownership: Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned 1. Title of Derivative Security: 2. Conversion or Exercise Price of Derivative Security: 3. Transaction Date (Month/Day/Year): 4. Transaction Code: Transaction Code V: 5. Number of Derivative Securities Acquired (A): Number of Derivative Securities Disposed of (D): 6. Date Exercisable (Month/Day/Year): Expiration Date (Month/Day/Year): 7. Title of Underlying Securities: Amount or Number of Shares of Underlying Securities: 8. Price of Derivative Security: 9. Number of Derivative Securities Beneficially Owned at End of Month: 10. Ownership Form of Derivative Securities Beneficially Owned at End of Month: 11. Nature of Indirect Beneficial Ownership: - ---- Submitted from: 12.13.124.253 User-agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0)