Net Income (loss) Attributable to ORBCOMM Inc. Common Stockholders

9 Months Ended

Sep. 30, 2011

Net Income (loss) Attributable to ORBCOMM Inc. Common Stockholders [Abstract]

Net Income (loss) Attributable to ORBCOMM Inc. Common Stockholders

7. Net Income (loss) Attributable to ORBCOMM Inc. Common Stockholders

Basic net income (loss) per common share is calculated by dividing net income (loss) attributable to ORBCOMM Inc. by the weighted-average number of common shares outstanding for the period. Diluted net loss per common share is the same as basic net loss per common share, because potentially dilutive securities such as Series A convertible preferred stock, SARs, RSUs and stock options would have an antidilutive effect as the Company incurred a net loss for the three months ended September 30, 2010 and for the nine months ended September 30, 2011 and 2010. For the three months ended September 30, 2011, the Company reported net income attributable to ORBCOMM Inc. and included the effect of 122,831 SARs, RSUs and stock options in its diluted weighted average common shares outstanding.

For the three months ended September 30, 2011, 307,322 shares of Series A convertible preferred stock, 3,222,706 SARs, 96,700 RSUs and 716,991 stock options were not included in the calculation of diluted income per share as their effect was antidilutive.

The potentially dilutive securities excluded from the determination of diluted loss per share, as their effect is antidilutive, are as follows:

	Nine months ended
	September 30,
	2011		2010
Series A convertible preferred stock		307,322		—
SARs		3,243,966		2,543,813
RSUs		158,334		186,624
Stock options		757,828		780,829
		4,467,450		3,511,266

The computation of net income (loss) attributable to ORBCOMM Inc. common stockholders are as follows for the three and nine months ended September 30, 2011.

	Three months ended September 30, 2011			Nine months ended September 30, 2011
Net income (loss) attributable to ORBCOMM Inc.	$	555		$	(717	)
Preferred stock dividends on Series A convertible preferred stock (See Note 16)		(9	)		(9	)
Net income (loss) attributable to ORBCOMM Inc. common stockholders	$	546		$	(726	)