1. Name and Address of Reporting Person WIESE, RANDY 7887 E. Belleview Avenue Suite 1000 Englewood, CO 80111 USA 2. Issuer Name and Ticker or Trading Symbol CSG Systems International, Inc. (CSGS) 3. IRS or Social Security Number of Reporting Person (Voluntary) 4. Statement for Month/Year 8/2002 5. If Amendment, Date of Original (Month/Day/Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) ( ) Director ( ) 10% Owner ( ) Officer (give title below) (X) Other (specify below) Vice President 7. Individual or Joint/Group Filing (Check Applicable Line) (X) Form filed by One Reporting Person ( ) Form filed by More than One Reporting Person TABLE I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned +---------------------------------+----------+-------------+-----------------------------+----------------+-----------+------------+ |1. Title of Security |2. Trans- |3. Trans- |4. Securities Acquired (A) |5. Amount of |6. Owner- |7. Nature | | | action | action | or Disposed of (D) | Securities | ship | of In- | | | Date | Code | | Beneficially | Form: | direct | | | | | | Owned at | Direct | Bene- | | | (Month/ | | | End of | (D) or | ficial | | | Day/ +-------+-----+-----------+------+----------+ Month | Indirect| Owner- | | | Year) |Code |V |Amount |A/D |Price | | (I) | ship | +---------------------------------+----------+-------+-----+-----------+------+----------+----------------+-----------+------------+ Common Stock 0 D TABLE II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned +-------------+--------+----------+---------+-----------+---------------------+----------------+----------+--------+-------+-------+ |1. |2. |3. |4. |5. |6. |7. |8. |9. |10. |11. | | | | | | | | | |Number |Owner- | | | | | | | | | | |of |ship | | | | | | | | | | |Deriv- |Form of| | | | | | | | |Title and Amount| |ative |Deriv- | | | | | | | | |of Underlying | |Secur- |ative |Nature | | |Conver- | | |Number of | |Securities | |ities |Secur- |of | | |sion or | | |Derivative |Date Exercisable +-------+--------+ |Benefi- |ity: |In- | | |Exercise| | |Securities |and Expiration Date | |Amount | |cially |Direct |direct | | |Price of|Transac- |Transac- |Acquired(A)|(Month/Day/Year) | |or | |Owned |(D) or |Bene- | |Title of |Deriv- |tion Date |tion Code|Disposed(D)+----------+----------+ |Number |Price of |at End |In- |ficial | |Derivative |ative |(Month/ +------+--+-----+-----+Date Exer-|Expira- | |of |Derivative|of |direct |Owner- | |Security |Security|Day/Year) |Code |V |(A) |(D) |cisable |tion Date |Title |Shares |Security |Month |(I) |ship | +-------------+--------+----------+------+--+-----+-----+----------+----------+-------+--------+----------+--------+-------+-------+ Stock Options $11.89 08/30/2002 A 30000 08/30/2003 08/30/2012 Common 30000 $0.0000 30000 D (Right to buy)Stock Stock Options $14.875 06/06/2006 Common 3000 D (Right to buy) Stock Stock Options $21.125 01/20/2008 Common 2500 D (Right to buy) Stock Stock Options $24.811 04/11/2002 A V 5000 04/11/2003 04/11/2012 Common 5000 $0.0000 5000 D (Right to buy) Stock Stock Options $26.7188 11/17/2008 Common 15000 D (Right to buy) Stock Stock Options $34.43 12/14/2011 Common 7500 D (Right to buy) Stock Stock Options $34.95 01/17/2002 A V 7500 01/17/2003 01/17/2012 Common 7500 $0.0000 7500 D (Right to buy) Stock Stock Options $38.4375 01/07/2010 Common 3750 D (Right to buy) Stock Stock Options $47 01/17/2011 Common 9500 D (Right to buy) Stock Explanation of Responses: SIGNATURE OF REPORTING PERSON /s/ RANDY WIESE DATE 09/03/2002 The Stock Option reported in Table II is exercisable in 4 equal installments beginning on August 30, 2003. This Stock Option reported in Table II is exercisable in 4 equal installments beginning on April 11, 2003. This Stock Option reported in Table II is exercisable in 4 equal installments beginning on January 17, 2003.