Cash Equivalents and Short-Term Investments

9 Months Ended

Sep. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Cash Equivalents and Short-Term Investments

4. Cash Equivalents and Investments

The following is a summary of the Company’s cash equivalents and investments as of September 30, 2021 and December 31, 2020 (in thousands):

	September 30, 2021
	Amortized Cost Basis		Unrealized Gain		Unrealized Loss			Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	48,519	$	—	$	—		$	48,519
Total included in cash and cash equivalents		48,519		—		—			48,519
Investments:
U.S. Treasury securities		42,359		3		—			42,362
Corporate debt securities and commercial paper		39,052		22		—			39,074
Total included in short-term investments		81,411		25		—			81,436
U.S. Treasury securities included in long-term investments		6,003		—		(1	)		6,002
Total assets	$	135,933	$	25	$	(1	)	$	135,957
	December 31, 2020
	Amortized Cost Basis		Unrealized Gain		Unrealized Loss			Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	1,034	$	—	$	—		$	1,034
U.S. Treasury securities		33,996		—		—			33,996
Total included in cash and cash equivalents		35,030		—		—			35,030
Investments:
U.S. Treasury securities		24,991		1		—			24,992
U.S. Government agencies		24,986		3		—			24,989
Total included in short-term investments		49,977		4		—			49,981
Total assets	$	85,007	$	4	$	—		$	85,011