1. Name and Address of Reporting Person ABRAMSON, J. RICHARD 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 2001 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) Executive 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/ | +-----------+------+----------+ Year | Indirect| Owner- | | | Year) | |Amount |A/D |Price | | (I) | ship | +---------------------------------+----------+-------------+-----------+------+----------+----------------+-----------+------------+ 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) | |(A) |(D) |cisable |tion Date |Title |Shares |Security |Year |(I) |ship | +-------------+--------+----------+---------+-----+-----+----------+----------+-------+--------+----------+--------+-------+-------+ Stock Options $34.43 12/14/2001 A 30000 12/14/2002 12/14/2011 Common 30000 $0.0000 30000 D (Right to buy) StockStock Options $40.125 02/15/2010 Common 100000 D (Right to buy) Stock Stock Options $47 01/17/2001 A 32873 01/17/2002 01/17/2011 Common 32873 $47.0000 D (Right to buy) Stock Stock Options $47 01/17/2001 A 2127 01/17/2005 01/17/2011 Common 2127 $47.0000 35000 D (Right to buy) Stock Stock Options $49.1875 08/17/2010 Common 100000 D (Right to buy) Stock Explanation of Responses: SIGNATURE OF REPORTING PERSON /s/ J. RICHARD ABRAMSON DATE 02/01/2002 This stock option is exercisable in 4 equal installments. This stock option is exercisable in 4 installments of 8,750; 8,750; 8,750 and 6,623, share respectively, beginning on January 17, 2002.