UNITIL CORP — Director's Dealing 2006

May 31, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: UNITIL CORP (UTL)
CIK: 0000755001
Period of Report: 2006-05-30

Reporting Person: Brock Laurence M (Controller & C.A.O.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-02-15	Common stock, no par value.	J	43.639	$25.130	Acquired	0	Direct
2006-05-15	Common stock, no par value	J	50.173	$24.740	Acquired	0	Direct
2006-05-30	Common stock, no par value	S	645.000	$24.531	Disposed	2828.590	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common stock, no par value	1234.985	Indirect

Footnotes

F1: Acquisition pursuant to reinvestment of dividends.

F2: Acquisition pursuant to reinvestment of dividends.