SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
DUTTON CHRISTOPHER L

(Last) (First) (Middle)
163 ACORN LANE

(Street)
COLCHESTER VT 05446

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
GREEN MOUNTAIN POWER CORP [ GMP ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Executive Officer
3. Date of Earliest Transaction (Month/Day/Year)
07/03/2006
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. 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 (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 07/03/2006 M(1) 1,500 A $7.9 42,247.7567(2) D
Common Stock 07/03/2006 S(1) 1,500 D $33.79 40,747.7567(2) D
Common Stock 6,412.9543(3) I By 401(k) plan
Common Stock 62.3418(4) I By wife for daughter
Common Stock 62.3418(5) I By wife for son
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Options (Right to buy) $7.9 07/03/2006 M(1) 1,500 (6) 08/22/2010 Common Stock 1,500 $0 45,500 D
Explanation of Responses:
1. The exercise of stock options and the sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 21, 2005.
2. Includes 132.5836 shares acquired between May 23, 2006 and July 3, 2006 under the GMP dividend reinvestment plan. The information in this report is based on a plan statement as of July 3, 2006.
3. Includes 118.6392 shares acquired between May 23, 2006 and July 3, 2006 under the GMP 401(k) plan. The information in this report is based on a plan statement as of July 3, 2006.
4. These shares are held by the reporting person's wife as custodian for daughter under Uniform Gifts to Minors Act. Includes .5092 shares acquired between May 23, 2006 and July 3, 2006 under the GMP dividend reinvestment plan. The information in this report is based on a plan statement as July 3, 2006.
5. These shares are held by the reporting person's wife as custodian for son under Uniform Gifts to Minors Act. Includes .5092 shares acquired between May 23, 2006 and July 3, 2006 under the GMP dividend reinvestment plan. The information in this report is based on a plan statement as of July 3, 2006.
6. The Option is currently exercisable for 45,500 shares.
Donald J. Rendall, Jr., Attorney-In-Fact 07/06/2006
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** 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 is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.