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Investments
9 Months Ended
Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]  
Investments Investments
Cash, cash equivalents and investments as of September 30, 2022 included the following:
GROSSGROSS
AMORTIZEDUNREALIZEDUNREALIZEDFAIR
(in thousands)COSTGAINSLOSSESVALUE
Cash and cash equivalents:
Cash and cash equivalents$54,093 $— $— $54,093 
Total cash and cash equivalents$54,093 $— $— $54,093 
Investments:
Certificates of deposit (due within 1 year)$1,500 $— $(1)$1,499 
Commercial paper (due within 1 year)49,174 — (251)48,923 
Corporate bonds (due within 1 year)21,240 — (241)20,999 
U.S. Government and government agencies (due within 1 year)47,260 — (310)46,950 
Total investments$119,174 $— $(803)$118,371 
Total cash, cash equivalents, and investments$173,267 $— $(803)$172,464 
Cash, cash equivalents and investments as of December 31, 2021 included the following:
GROSSGROSS
AMORTIZEDUNREALIZEDUNREALIZEDFAIR
(in thousands)COSTGAINSLOSSESVALUE
Cash and cash equivalents:
Cash and cash equivalents$37,187 $— $— $37,187 
Total cash and cash equivalents$37,187 $— $— $37,187 
Investments:
Certificates of deposit (due within 1 year)$9,047 $— $(9)$9,038 
Commercial paper (due within 1 year)50,975 — (55)50,920 
Corporate bonds (due within 1 year)42,718 — (62)42,656 
Total investments$102,740 $— $(126)$102,614 
Total cash, cash equivalents, and investments$139,927 $— $(126)$139,801 
Interest income earned on the Company’s cash, cash equivalents, and investments was $0.5 million and $0.9 million during the three and nine months ended September 30, 2022, respectively, and was immaterial for each of the three and nine months ended September 30, 2021. Realized gains or losses were immaterial during the three and nine months ended September 30, 2022 and 2021.
As of September 30, 2022 and December 31, 2021, the Company did not hold any equity securities.