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Fair Value Measurements
6 Months Ended
Jun. 30, 2023
Fair Value Disclosures [Abstract]  
Fair Value Measurements . Fair Value Measurements

The fair values of the Company’s financial assets that are measured on a recurring basis are as follows (in thousands):

 

 

June 30, 2023

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

Total

 

Money market funds

 

$

31,150

 

 

$

 

 

$

 

 

$

31,150

 

Corporate bonds

 

 

 

 

 

22,246

 

 

 

 

 

 

22,246

 

Commercial paper

 

 

 

 

 

126,313

 

 

 

 

 

 

126,313

 

U.S. government bonds

 

 

58,457

 

 

 

 

 

 

 

 

 

58,457

 

Agency bonds

 

 

 

 

 

13,330

 

 

 

 

 

 

13,330

 

Asset-backed securities

 

 

 

 

 

2,493

 

 

 

 

 

 

2,493

 

Total

 

$

89,607

 

 

$

164,382

 

 

$

 

 

$

253,989

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 2022

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

Total

 

Money market funds

 

$

19,881

 

 

$

 

 

$

 

 

$

19,881

 

Corporate bonds

 

 

 

 

 

82,008

 

 

 

 

 

 

82,008

 

Commercial paper

 

 

 

 

 

57,381

 

 

 

 

 

 

57,381

 

U.S. government bonds

 

 

98,972

 

 

 

12,373

 

 

 

 

 

 

111,345

 

Agency bonds

 

 

 

 

 

11,468

 

 

 

 

 

 

11,468

 

Asset-backed securities

 

 

 

 

 

2,474

 

 

 

 

 

 

2,474

 

Foreign government bonds

 

 

 

 

 

4,980

 

 

 

 

 

 

4,980

 

Convertible promissory note

 

 

 

 

 

 

 

 

1,000

 

 

 

1,000

 

Total

 

$

118,853

 

 

$

170,684

 

 

$

1,000

 

 

$

290,537

 

 

 

The Company’s Level 2 investments are valued using third-party pricing sources. The pricing services utilize industry standard valuation models, including both income and market-based approaches, for which all significant inputs are observable, either directly or indirectly, to estimate fair value. These inputs include reported trades of and broker/dealer quotes on the same or similar investments, issuer credit spreads, benchmark investments, prepayment/default projections based on historical data, and other observable inputs. There were no transfers of assets between levels during the three months ended June 30, 2023. During the three months ended March 31, 2023, a total of $7.0 million of U.S. treasury notes and bills were transferred from Level 1 to Level 2 as such instruments were changed to off-the-run when they were issued before the most recent issue and were still outstanding at measurement day.