U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 5 ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP 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 [_] Check box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). [_] Form 3 Holdings Reported [_] Form 4 Transactions Reported -------------------------------------------------------------------------------- 1. Name and Address of Reporting Person* Heintz Frank O. -------------------------------------------------------------------------------- (Last) (First) (Middle) 39 W. Lexington Street -------------------------------------------------------------------------------- (Street) Baltimore, MD 21201 -------------------------------------------------------------------------------- (City) (State) (Zip) -------------------------------------------------------------------------------- 2. Issuer Name and Ticker or Trading Symbol Constellation Energy Group, Inc. (CEG) -------------------------------------------------------------------------------- 3. IRS Identification Number of Reporting Person, if an Entity (Voluntary) -------------------------------------------------------------------------------- 4. Statement for Month/Year December 31, 2000 -------------------------------------------------------------------------------- 5. If Amendment, Date of Original (Month/Year) -------------------------------------------------------------------------------- 6. Relationship of Reporting Person to Issuer (Check all applicable) [ ] Director [_] 10% Owner [ ] Officer (give title below) [X] Other (specify below) President and Chief Executive Officer, Baltimore Gas and Electric Company -------------------------------------------------------------------------------- 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 ================================================================================ 5. 6. 4. Amount of Owner- Securities Acquired (A) or Securities ship Disposed of (D) Beneficially Form: 7. (Instr. 3, 4 and 5) Owned at End Direct Nature of 2. 3. ----------------------------- of Issuer's (D) or Indirect 1. Transaction Transaction (A) Fiscal Year Indirect Beneficial Title of Security Date Code Amount or Price (Instr. 3 (I) Ownership (Instr. 3) (mm/dd/yy) (Instr. 8) (D) and 4) (Instr.4) (Instr. 4) ------------------------------------------------------------------------------------------------------------------------------------ Common Stock 1/1/00 A 9,000 A D ------------------------------------------------------------------------------------------------------------------------------------ Common Stock 2/17/00 A 1758.484 A D ------------------------------------------------------------------------------------------------------------------------------------ Common Stock 2/17/00 F 2,848 D $32.6563 34,306.272 D ------------------------------------------------------------------------------------------------------------------------------------ Common Stock 1,866 I by 401(K) Plan ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ==================================================================================================================================== * If the form is filed by more than one Reporting Person, see Instruction 4(b)(v). Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. (Print or Type Responses) (Over) (Form 5-07/99) FORM 5 (continued) Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) ================================================================================ 9. 10. Number Owner- of ship 2. Deriv- of Conver- 5. 7. ative Deriv- 11. sion Number of Title and Amount Secur- ative Nature or Derivative 6. of Underlying 8. ities Secur- of Exer- Securities Date Securities Price Bene- ity: In- cise 3. Acquired (A) Exercisable and (Instr. 3 and 4) of ficially Direct direct Price Trans- 4. or Disposed Expiration Date ---------------- Deriv- Owned (D) or Bene- 1. of action Trans- of (D) (Month/Day/Year) Amount ative at End In- ficial Title of Deriv- Date action (Instr. 3, ---------------- or Secur- of direct Owner- Derivative ative (Month/ Code 4 and 5) Date Expira- Number ity Year (I) ship Security Secur- Day/ (Instr. ------------ Exer- tion of (Instr. (Instr. (Instr. (Instr. (Instr. 3) ity Year) 8) (A) (D) cisable Date Title Shares 5) 4) 4) 4) ------------------------------------------------------------------------------------------------------------------------------------ Employee Stock Option (right to buy) $34.25 5/18/00 A 113,000 (1) 5/18/10(1) Common Stock 113,000 113,000 D ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ==================================================================================================================================== Explanation of Responses: (1) The option vests in three equal annual installments beginning on May 18, 2001, except that upon separation of Constellation Energy's merchant energy business, unvested installments will vest and become exercisable on a pro- rata basis determined by the length of time from 5/18/00 to expected separation date, and the option will terminate immediately prior to separation. /s/ Frank O. Heintz 2/9/01 --------------------------------------------- ----------------------- **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. Page 2