(a) Other items in the above table includes a $5.7 million one-time charge for a net litigation fee reimbursement and a $2.5 million one-time impairment on our patents held for sale during the three months ended March 31, 2023 and $0.5 million of restructuring costs during the three months ended March 31, 2022.

The table below presents a reconciliation of Non-GAAP net income to net income attributable to InterDigital, Inc., the most directly comparable GAAP financial measure (in thousands):

	For the Three Months Ended March 31,								Q2 Outlook
		2023				2022			2023
Net income attributable to InterDigital, Inc.	$	105,259			$	17,994			$16,400 - $19,100
Share-based compensation		7,790				5,386			9,000
Acquisition related amortization		10,268				10,086			10,300
Other operating items (a)		8,237				542			—
Other non-operating items (b)		(158	)			—			—
Related income tax and noncontrolling interest effect of above items		(6,739	)			(3,363	)		(3,300)
Adjustments to income taxes		(1,042	)			162			—
Non-GAAP net income 3	$	123,615			$	30,807			$32,400 - $35,100
Non-GAAP net income per diluted share 3	$	4.21			$	0.99			$1.19 - $1.29

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