1. Name and Address of Reporting Person
   Kerley, Greg D.
   2350 N. Sam Houston Parkway East
   Suite 300
   Houston, TX 77032
   USA
2. Issuer Name and Ticker or Trading Symbol
   Southwestern Energy Company (SWN)
3. IRS or Social Security Number of Reporting Person (Voluntary)
4. Statement for Month/Year
   7/2002
5. If Amendment, Date of Original (Month/Day/Year)
6. Relationship of Reporting Person(s) to Issuer (Check all applicable)
   ( ) Director                   ( ) 10% Owner
   (X) Officer (give title below) ( ) Other (specify below)
   Executive Vice President and Chief Financial Officer
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                       07/01/2002 M             4326        A      $7.3125                     D
Common Stock                       07/01/2002 F             -2082       D      $15.1900   66494            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  $7.3125  07/01/2002 M               4326  09/11/1999 09/11/2008 Common  4326     $0.0000    15674    D
(Right to buy)                                                                 Stock

Explanation of Responses:


SIGNATURE OF REPORTING PERSON
/s/ Greg D. Kerley

DATE
07/25/2002