Earnings Per Share

3 Months Ended

Mar. 31, 2019

We have outstanding stock options, unvested restricted common shares, and Series A-4 Preferred Stock, and our Operating Partnership has: outstanding common OP units; Series A-1 preferred OP units; Series A-3 preferred OP units; Series A-4 preferred OP units; Series C preferred OP units; Series D preferred OP units; and Aspen preferred OP Units, which, if converted or exercised, may impact dilution.

Computations of basic and diluted earnings per share were as follows (in thousands, except per share data):



	Three Months Ended March 31,
Numerator	2019			2018
Net income attributable to common stockholders	$	34,331		$	29,986
Allocation to restricted stock awards	(437		)	(303		)
Basic earnings: Net income attributable to common stockholders after allocation	33,894			29,683
Allocation to restricted stock awards	437			303
Diluted earnings: Net income attributable to common stockholders after allocation	$	34,331		$	29,986

Denominator
Weighted average common shares outstanding	85,520			78,855
Add: dilutive stock options	1			2
Add: dilutive restricted stock	512			607
Diluted weighted average common shares and securities	86,033			79,464
Earnings per share available to common stockholders after allocation:
Basic	$	0.40		$	0.38
Diluted	$	0.40		$	0.38

We have excluded certain convertible securities from the computation of diluted earnings per share because the inclusion of these securities would have been anti-dilutive for the periods presented. The following table presents the outstanding securities that were excluded from the computation of diluted earnings per share as of March 31, 2019 and 2018 (in thousands):



	As of March 31,
	2019	2018
Common OP units	2,719	2,739
Series A-4 preferred stock	1,063	1,085
Series A-3 preferred OP units	40	40
Series A-1 preferred OP units	328	342
Series D preferred OP units	489	—
Aspen preferred OP units	1,284	1,284
Series A-4 preferred OP units	410	422
Series C preferred OP units	314	316
Total securities	6,647	6,228