EXHIBIT 11

UNITIL CORPORATION AND SUBSIDIARY COMPANIES

COMPUTATION OF EARNINGS PER WEIGHTED AVERAGE COMMON SHARE OUTSTANDING

(Millions except common shares and per share data)

(UNAUDITED)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Net Income	$	2.3	$	3.5	$	17.8	$	16.9
Weighted Average Number of Common Shares Outstanding – Basic (000’s)		14,067		13,993		14,056		13,982
Dilutive Effect of Stock Options and Restricted Stock (000’s)		7		6		7		6
Weighted Average Number of Common Shares Outstanding – Diluted (000’s)		14,074		13,999		14,063		13,988
Earnings Per Share – Basic and Diluted	$	0.16	$	0.25	$	1.27	$	1.21