FORM 5 Check this 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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ANNUAL STATEMENT OF CHANGES IN 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(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * MEISSNER THOMAS P JR 2. Issuer Name and Ticker or Trading Symbol UNITIL CORP [UTL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Sr. Vice President (Last) (First) (Middle) 6 LIBERTY LANE WEST 3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year) 12/31/2009 (Street) HAMPTON, NH 03842 4. If Amendment, Date Original Filed(Month/Day/Year) 02/09/2010 6. Individual or Joint/Group Reporting (check applicable line) _X_ Form Filed by One Reporting Person ___ Form Filed by More than One Reporting Person (City) (State) (Zip) 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 at end of Issuer's Fiscal Year (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Amount (A) or (D) Price Common stock, no par value 02/05/2010   A 1,310 A $ 0 (1) 0 D   Common stock, no par value 09/09/2009   A(2) 13 A $ 21.86 13,083 D   Common stock, no par value 12/31/2009   J(3) 10.081 A $ 20.93 749.391 I Held in trust (4)

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

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SEC 2270 (9-02)

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 Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned at End of Issuer's Fiscal Year (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MEISSNER THOMAS P JR 6 LIBERTY LANE WEST HAMPTON, NH 03842	Â	Â	  Sr. Vice President	Â

Signatures

/s/ Thomas P. Meissner, Jr.		02/09/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Shares were granted pursuant to the Unitil Corporation Restricted Stock Plan. Shares will vest 25% per year over four years from date of grant. Shares will be valued at current market price on date of vesting.
(2)	Shares granted in connection with a length of service award for 15 years of service with the Company.
(3)	Shares were purchased between January 1 - December 31, 2009 at an average price of $20.93 under the terms and conditions of the Unitil Corporation Tax Deferred Savings and Investment Plan.
(4)	Shares are held in trust under the terms of the Unitil Corporation Tax Deferred Savings and Investment Plan.

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