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Warrants to Purchase Convertible Preferred Stock (Tables)
12 Months Ended
Dec. 31, 2021
Warrants And Rights Note Disclosure [Abstract]  
Summary of Activity for Convertible Preferred Stock Warrants

The following table presents the activity for convertible preferred stock warrants (in thousands, except weighted average exercise price):

 

 

Series E

 

 

Series G (1)

 

 

 

Warrants

 

 

Weighted
Average
Exercise
price

 

 

Warrants

 

 

Weighted
Average
Exercise
price

 

Outstanding ‑ January 1, 2020

 

 

925

 

 

$

5.00

 

 

 

613

 

 

$

0.75

 

Granted

 

 

 

 

 

 

 

 

 

 

 

 

Forfeited/canceled

 

 

(925

)

 

 

(5.00

)

 

 

 

 

 

 

Exercised

 

 

 

 

 

 

 

 

 

 

 

 

Reclassification of warrant liability to additional paid-in capital

 

 

 

 

 

 

 

 

(613

)

 

 

(0.75

)

Outstanding ‑ December 31, 2020

 

 

 

 

$

 

 

$

 

 

$

 

(1) On October 27, 2020, all convertible preferred stock converted to common stock at the completion of our IPO, and as a consequence, the warrants to purchase Series G convertible preferred stock were converted to 103,326 warrants to purchase common stock at $4.46 per share, which have an expiration date of February 23, 2028. All common stock warrants remain outstanding as of December 31, 2021.