U.S. SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                     FORM 3

            INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

    Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934,
       Section 17(a) of the Public Utility Holding Company Act of 1935 or
               Section 30(f) of the Investment Company Act of 1940

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1.   Name and Address of Reporting Person*

Huston                               Mark                    P.
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   (Last)                            (First)              (Middle)

750 E. Pratt Street, 18th Floor
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                                    (Street)

Baltimore                               MD                   21202
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   (City)                            (State)                (Zip)

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2.   Date of Event Requiring Statement (Month/Day/Year)

     7/19/02
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3.   IRS Identification Number of Reporting Person, if an Entity (Voluntary)


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4.   Issuer Name and Ticker or Trading Symbol
     Constellation Energy Group, Inc. (CEG)

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5.   Relationship of Reporting Person to Issuer
     (Check all applicable)

     [_]  Director                             [_]  10% Owner
     [X]  Officer (give title below)           [_]  Other (specify below)

     Vice President
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6.   If Amendment, Date of Original (Month/Day/Year)


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7.   Individual or Joint/Group Filing  (Check applicable line)

     [X]  Form Filed by One Reporting Person

     [_]  Form Filed by More than One Reporting Person

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             Table I -- Non-Derivative Securities Beneficially Owned
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                                                                 3. Ownership Form:
                                      2. Amount of Securities       Direct (D) or
1. Title of Security                     Beneficially Owned         Indirect (I)       4. Nature of Indirect Beneficial Ownership
   (Instr. 4)                            (Instr. 4)                 (Instr. 5)            (Instr. 4)
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Common Stock                             1,567.107                     D
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Common Stock                             4,308.979                     I                  by 401(k) Plan
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*    If the Form is filed by more than one  Reporting  Person,  see  Instruction
     5(b)(v).

Reminder: Report on a separate line for each class of securities beneficially
          owned directly or indirectly.

                            (Print of Type Responses)

                                                                          (Over)




FORM 3 (continued)

              Table II -- Derivative Securities Beneficially Owned
         (e.g., puts, calls, warrants, options, convertible securities)

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                                                                                                        5. Owner-
                                                    3. Title and Amount of Securities                      ship
                                                       Underlying Derivative Security                      Form of
                         2. Date Exercisable           (Instr. 4)                                          Derivative
                            and Expiration Date     ---------------------------------    4. Conver-        Security:
                            (Month/Day/Year)                               Amount           sion or        Direct      6. Nature of
                         ----------------------                            or               Exercise       (D) or         Indirect
                         Date       Expira-                                Number           Price of       Indirect       Beneficial
1. Title of Derivative   Exer-      tion                                   of               Derivative     (I)            Ownership
   Security (Instr. 4)   cisable    Date            Title                  Shares           Security       (Instr. 5)     (Instr. 5)
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Employee Stock Option    (1)        5/18/10         Common Stock           9,933         $34.25          D
(right to buy)
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Employee Stock Option
(right to buy)           (2)        5/24/12         Common Stock          25,000         $31.21          D
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Explanation of Responses:
(1)  Remaining balance on option granted May 18, 2000, which vests in three\
     equal installments commencing on May 18, 2001. The first installment was
     exercised and sold prior to reporting person becoming an insider subject
     to Section 16. Another installment vested on May 18, 2002 and the final
     installment vests on May 18, 2003.
(2)  Option vests in three equal installments, commencing May 24, 2003.



/s/ Mark P. Huston                                            7/25/02
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      **Signature of Reporting Person                             Date

**   Intentional misstatements or omissions of facts constitute Federal Criminal
     Violations.

     See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note:  File three copies of this form, one of which must be manually signed.
       If space provided is insufficient, see Instruction 6 for procedure.

                            (Print of Type Responses)

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