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Financial Instruments and Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2021
Financial Instruments and Fair Value Measurements  
Summary of Financial assets and liabilities

As of September 30, 2021

Significant

Quoted Priced in

Significant Other

Unobservable

Active Markets

Observable Inputs

Inputs

    

(Level 1)

    

(Level 2)

    

(Level 3)

    

Total

Assets:

 

  

 

  

 

  

 

  

Money market funds

$

7,252

$

$

$

7,252

Total assets

$

7,252

$

$

$

7,252

Liabilities:

 

  

  

  

  

Simple Agreements for Future Equity

$

$

$

10,918

$

10,918

Total liabilities

$

$

$

10,918

$

10,918

As of December 31, 2020

Significant

Quoted Priced in

Significant Other

Unobservable

Active Markets

Observable Inputs

Inputs

    

(Level 1)

    

(Level 2)

    

(Level 3)

    

Total

Assets:

 

  

 

  

 

  

 

  

Money market funds

$

2,853

$

$

$

2,853

Total assets

$

2,853

$

$

$

2,853

Liabilities:

 

  

 

  

 

  

 

  

Derivative liability

$

$

$

2,209

$

2,209

Total liabilities

$

$

$

2,209

$

2,209

Summary of the changes in fair value of the Level 3 liabilities

Nine Months Ended September 30, 2021

Derivative

    

    

SAFE

    

Liability

    

Total

Balance at December 31, 2020

$

$

2,209

$

2,209

Change in the fair value of the warrant liability

 

 

 

Fair value recognized upon the issuance of SAFE

 

8,942

 

 

8,942

Change in the fair value of the liability

 

1,976

 

(2,209)

 

(233)

Balance at September 30, 2021

$

10,918

$

$

10,918

Nine Months Ended September 30, 2020

Warrant

Derivative

    

    

Liability

    

Liability

    

Total

Balance at December 31, 2019

$

181

$

1,493

$

1,674

Change in the fair value of the warrant liability

 

 

 

Fair value recognized upon the issuance of Convertible Notes

 

 

718

 

718

Change in the fair value of the liability

 

(33)

 

(135)

 

(168)

Balance at September 30, 2020

$

148

$

2,076

$

2,224

Schedule of significant unobservable inputs for SAFE

March 25,

September 30, 

2021

    

2021

(Issuance)

Expected term (in years)

 

0.02

0.35

Discount upon conversion

 

20.0%

20.0%

Discount upon implied return

 

18.9%

18.9%

Probability of initial public offering occurrence

 

90.0%

45.0%

Probability of dissolution event occurrence

2.0%

15.0%

Probability of equity financing occurrence

7.0%

37.0%

Probability of change of control occurrence

1.0%

3.0%