1. Name and Address of Reporting Person
NAFUS, EDWARD C.
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)
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 08/30/2002 A 60416 A $0.0000 96796 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 $21 08/18/2008 Common 160120 D
(Right to buy) Stock
Stock Options $26.7188 08/30/2002 D 76258 11/17/2002 11/17/2008 Common 76258 $0.0000 D
(Right to buy) Stock
Stock Options $26.7188 08/30/2002 D 3742 11/17/2003 11/17/2008 Common 3742 $0.0000 0 D
(Right to buy) Stock
Stock Options $34.43 08/30/2002 D 37500 12/14/2002 12/14/2011 Common 37500 $0.0000 0 D
(Right to buy) Stock
Stock Options $34.95 08/30/2002 D 34639 01/17/2003 01/17/2012 Common 34639 $0.0000 D
(Right to buy) Stock
Stock Options $34.95 08/30/2002 D 2861 01/17/2006 01/17/2012 Common 2861 $0.0000 0 D
(Right to buy) Stock
Stock Options $38.4375 08/30/2002 D 2603 01/07/2001 01/07/2010 Common 2603 $0.0000 D
(Right to buy) Stock
Stock Options $38.4375 08/30/2002 D 22397 01/07/2001 01/07/2010 Common 22397 $0.0000 0 D
(Right to buy) Stock
Stock Options $47 08/30/2002 D 32873 01/17/2002 01/17/2011 Common 32873 $0.0000 D
(Right to buy) Stock
Stock Options $47 08/30/2002 D 2127 01/17/2005 01/17/2011 Common 2127 $0.0000 0 D
(Right to buy) Stock
Explanation of Responses:
On August 30, 2003, the reporting person surrendered to the issuer for
cancellation, options granted to the reporting person as shown in Table II. In
exchange for the surrendered options, the reporting person received 60,416
shares of restricted stock of the issuer.
SIGNATURE OF REPORTING PERSON
/s/ EDWARD C. NAFUS
DATE
09/04/2002