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,
	2018		2017		2018		2017
Net Income	$	2.8	$	2.3	$	22.0	$	17.8
Weighted Average Number of Common Shares Outstanding – Basic (000’s)		14,829		14,067		14,818		14,056
Dilutive Effect of Stock Options and Restricted Stock (000’s)		5		7		5		7
Weighted Average Number of Common Shares Outstanding – Diluted (000’s)		14,834		14,074		14,823		14,063
Earnings Per Share – Basic and Diluted	$	0.19	$	0.16	$	1.49	$	1.27