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Fair value measurements
6 Months Ended
Jun. 30, 2022
Fair Value Disclosures [Abstract]  
Fair value measurements Fair value measurements
The following table presents information about the Company’s financial assets measured at fair value on a recurring basis and indicates the level of the fair value hierarchy utilized to determine these fair values as of June 30, 2022 (in thousands):
Fair ValueLevel 1Level 2Level 3
Cash equivalents:    
Money market funds$57,033 $57,033 $— $— 
Marketable securities:    
Corporate debt securities264,071 — 264,071 — 
U.S. government debt securities50,779 — 50,779 — 
U.S. Treasury securities25,691 — 25,691 — 
Total cash equivalents and marketable securities$397,574 $57,033 $340,541 $— 
There have been no transfers between fair value levels during the six months ended June 30, 2022.
The following table presents information about the Company’s financial assets measured at fair value on a recurring basis and indicates the level of the fair value hierarchy utilized to determine these fair values as of December 31, 2021 (in thousands):
Fair ValueLevel 1Level 2Level 3
Cash equivalents:    
Money market funds$59,162 $59,162 $— $— 
Corporate debt securities11,649 — 11,649 — 
U.S. Treasury securities5,000 — 5,000 — 
Marketable securities:    
Corporate debt securities308,300 — 308,300 — 
U.S. government debt securities37,883 — 37,883 — 
U.S. Treasury securities29,172 — 29,172 — 
Total cash equivalents and marketable securities$451,166 $59,162 $392,004 $— 
The Company classifies its money market funds, which are valued based on quoted market prices in active markets, with no valuation adjustment, as Level 1 assets within the fair value hierarchy.
Marketable securities consist of U.S. Treasury securities, U.S. government debt securities, and corporate debt securities, all of which are classified as available-for-sale pursuant to Accounting Standards Codification, ASC, 320, Investments – Debt and Equity Securities. Marketable securities are classified within Level 2 of the fair value hierarchy because pricing inputs are other than quoted prices in active markets, which are either directly or indirectly observable as of the reporting date, and fair value is determined using models or other valuation methodologies on a recurring basis.