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Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2024
Equity [Abstract]  
Schedule of Outstanding Stock Warrants
Shown below is a summary of the activity of the stock warrants as of and during the nine months ended September 30, 2024:
Public
warrants
Private
warrants
PIPE
warrants
Total
Outstanding, December 31, 202329,268,236 16,400,000 2,052,500 47,720,736 
Exercise for cash(12,575,664)(500,000)— (13,075,664)
Noncash exercise in exchange for
   shares of common stock
— (15,600,000)— (15,600,000)
Outstanding, September 30, 202416,692,572 300,000 2,052,500 19,045,072 
Schedule of Stock-Based Compensation Expense
Stock-based compensation from stock options and RSUs under the Equity Incentive Plans and from stock options under the Amprius Holdings 2008 Stock Plan that we recorded were included in the following lines in the accompanying condensed consolidated statements of operations during the periods presented (in thousands):
Three months ended September 30,Nine months ended September 30,
2024202320242023
Cost of revenue$223 $269 $632 $682 
Research and development248 27 688 74 
Selling, general and administrative1,249 819 3,588 2,009 
Total stock-based compensation expense$1,720 $1,115 $4,908 $2,765