Marketable Securities

3 Months Ended

Mar. 31, 2019

Investments Debt And Equity Securities [Abstract]

NOTE 3—MARKETABLE SECURITIES

The table below summarizes the Company’s cash equivalents and available-for-sale securities (in thousands):

			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
	Cost		Gains		(Losses)			Fair Value
March 31, 2019
Assets
Cash equivalents:
Money market funds	$	15,233	$	—	$	—		$	15,233
Commercial paper securities		4,990		—		—			4,990
Total		20,223		—		—			20,223
Available-for-sale securities:
Commercial paper securities		180,380		19		—			180,399
Corporate debt securities		70,973		—		(25	)		70,948
U.S. government-sponsored entity debt securities		18,681		—		—			18,681
Total		270,034		19		(25	)		270,028
Total cash equivalents and available-for-sale securities	$	290,257	$	19	$	(25	)	$	290,251
December 31, 2018
Cash equivalents:
Money market funds	$	103,291	$	—	$	—		$	103,291
Total		103,291		—		—			103,291
Available-for-sale securities:
Commercial paper securities		177,353		—		(129	)		177,224
Corporate debt securities		63,981		—		(111	)		63,870
U.S. government-sponsored entity debt securities		18,640		—		(19	)		18,621
Total		259,974		—		(259	)		259,715
Total cash equivalents and available-for-sale securities	$	363,265		—	$	(259	)	$	363,006

As of March 31, 2019 and December 31, 2018, all of the Company’s investments had maturity dates within one year as of the balance sheet date. The Company had no material realized losses of its available-for-sale securities for the three months ended March 31, 2019 or 2018. Sangamo has the intent and ability to hold its investments for a period of time sufficient to allow for any anticipated recovery in market value. No investments were other-than-temporarily impaired at either March 31, 2019 or December 31, 2018.