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Fair Value Measurements
9 Months Ended
Sep. 30, 2022
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
The following table represents the Company’s fair value hierarchy for its financial assets and liabilities (in thousands):
Fair Value at September 30, 2022Fair Value at December 31, 2021
AssetsLevel 1Level 2Level 3Level 1Level 2Level 3
Money market funds(1)
$365,631 $— $— $361,822 $— $— 
Government-backed securities(1)
— 261,000 — — 266,250 — 
Corporate debt securities(1)
— 109,914 — — 790,672 — 
Agency securities(1)
— 42,777 — — — — 
Total cash equivalents$365,631 $413,691 $— $361,822 $1,056,922 $— 
Liabilities
Convertible notes payable$— $317,044 $— $— $447,509 $— 
(1)All investments are classified as Cash and cash equivalents as of September 30, 2022 and December 31, 2021, on the consolidated balance sheets.
Cash equivalents are recorded at cost, which approximate fair value due to their short-term nature. Pricing of the Company's Notes (see Note 10) has been estimated using other observable inputs, including the price of the Company's common stock, implied volatility, interest rates, and credit spreads.
During the nine months ended September 30, 2022 and 2021, the Company did not have any transfers between levels.