(11) Net Loss Per Share:

All share and per share amounts in the tables below have been retroactively adjusted for all periods presented to give effect to the reverse stock split. See Note 1 – Summary of Significant Accounting Policies for additional details.

The reconciliation of the net loss per share calculation is as follows:



	For the three months ended				For the six months ended
	June 30,				June 30,

($ in millions and shares in thousands, except per share amounts)	2017		2016		2017		2016

Net loss used for basic and diluted loss
per share:
Net loss attributable to Frontier common shareholders	$	(715)	$	(80)	$	(844)	$	(320)
Less: Dividends paid on unvested restricted stock awards		(1)		(1)		(2)		(2)
Total basic net loss
attributable to Frontier common shareholders	$	(716)	$	(81)	$	(846)	$	(322)
Effect of loss related to dilutive stock units		(2)		-		(2)		-
Total diluted net loss
attributable to Frontier common shareholders	$	(718)	$	(81)	$	(848)	$	(322)

Basic loss per share:
Total weighted average shares and unvested restricted stock
awards outstanding - basic		78,531		78,198		78,365		78,104
Less: Weighted average unvested restricted stock awards		(736)		(573)		(686)		(493)
Total weighted average shares outstanding - basic		77,795		77,625		77,679		77,611

Basic net loss per share
attributable to Frontier common shareholders	$	(9.20)	$	(1.05)	$	(10.88)	$	(4.14)

Diluted loss per share:
Total weighted average shares outstanding - basic		77,795		77,625		77,679		77,611
Effect of dilutive stock units		156		-		156		-
Total weighted average shares outstanding - diluted		77,951		77,625		77,835		77,611

Diluted net loss per share
attributable to Frontier common shareholders	$	(9.21)	$	(1.05)	$	(10.89)	$	(4.14)

In calculating diluted net loss per common share for the three and six months ended June 30, 2016, the effect of all common stock equivalents is excluded from the computation as the effect would be antidilutive.

Stock Options

For the three and six months ended June 30, 2017 and 2016, options to purchase 2,664 shares, issuable under employee compensation plans were excluded from the computation of diluted earnings (loss) per share (EPS) for those periods because the exercise prices were greater than the average market price of our common stock and, therefore, the effect would be antidilutive.

Stock Units

At June 30, 2017 and 2016, we had 155,616 and 108,827 stock units, respectively, issued under the Non-Employee Directors’ Deferred Fee Equity Plan (Deferred Fee Plan), the Non-Employee Directors’ Equity Incentive Plan (Directors’ Equity Plan), the 2013 Equity Incentive Plan and the 2017 Equity Incentive Plan. These securities have not been included in the diluted EPS calculation for 2016 because their inclusion would have an antidilutive effect. Compensation costs associated with the issuance of stock units were $(3) million and $1 million for the six months ended June 30, 2017 and 2016, respectively.

Mandatory Convertible Preferred Stock

The impact of the common share equivalents associated with the 19,250,000 shares of Series A Preferred stock were not included in the diluted EPS calculation as of June 30, 2017 and 2016, as their impact was antidilutive.