The following table presents details of stock-based compensation expense included in each functional line item in the consolidated statements of operations above:

		Three Months Ended December 31,				Year Ended December 31,
		2018		2017		2018		2017
		(in thousands of dollars)				(in thousands of dollars)
		(Unaudited)				(Unaudited)
Cost of revenue	$	717	$	391	$	2,527	$	2,045
Research and development		9,544		7,887		37,397		28,846
Sales and marketing		3,285		2,292		13,470		8,340
General and administrative		2,829		1,895		10,490		5,602
	$	16,375	$	12,465	$	63,884	$	44,833

INPHI CORPORATION
CONSOLIDATED BALANCE SHEETS
(in thousands of dollars)
(Unaudited)
		December 31, 2018			December 31, 2017
Assets
Current assets:
Cash and cash equivalents	$	172,018		$	163,450
Short-term investments in marketable securities		235,339			241,737
Accounts receivable, net		61,271			67,993
Inventories		33,052			31,721
Prepaid expenses and other current assets		9,600			12,208
Total current assets		511,280			517,109
Property and equipment, net		70,740			60,344
Goodwill		104,502			104,502
Identifiable intangible assets		180,447			222,933
Other noncurrent assets		22,904			12,618
Total assets	$	889,873		$	917,506
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	15,891		$	14,721
Accrued expenses and other current liabilities		48,552			45,326
Total current liabilities		64,443			60,047
Convertible debt		447,825			421,431
Other liabilities		10,911			24,627
Total liabilities		523,179			506,105
Stockholders’ equity:
Common stock		44			43
Additional paid-in capital		536,157			484,934
Accumulated deficit		(169,896	)		(74,145	)
Accumulated other comprehensive income		389			569
Total stockholders’ equity		366,694			411,401
Total liabilities and stockholders’ equity	$	889,873		$	917,506

INPHI CORPORATION