XML 34 R23.htm IDEA: XBRL DOCUMENT v3.26.1
Equity Incentive Plans (Tables)
 6 Months Ended
Jun. 30, 2026
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock-Based Compensation Expense
Total stock-based compensation expense by function was as follows (in millions):
Three Months Ended
June 30,		Six Months Ended
June 30,
2026202520262025
Research and development
$47 $44 $83 $73 
Selling, general, and administrative
13 11 23 16 
Total
$60 $55 $106 $89 
Schedule of Restricted Stock Unit Activity
RSU activity under the Plan and the 2017 Plan was as follows (in millions, except per share amounts):
Number of
shares		Weighted-
average grant
date fair value
Unvested at December 31, 2025
80 $5.12 
Granted
67 4.53 
Vested(21)4.40 
Forfeited
(8)4.94 
Unvested at June 30, 2026
118 $4.92 
Schedule of Stock Option Valuation Assumptions
Stock options granted under the Plan during the six months ended June 30, 2026 were as follows:
Six Months Ended
June 30, 2026
Stock options granted (in millions)1 
Weighted average grant date fair value$3.18 
Weighted average grant date fair value assumptions:
Expected term
6.5 years
Risk-free interest rates
4.1 %
Expected volatility79.1 %
Schedule of Stock Option Activity
Stock option activity under the Plan and the 2017 Plan was as follows (in millions, except per share amounts):
Number of
shares		Weighted
average
exercise price		Weighted average remaining contractual term (in years)Aggregate intrinsic value
Outstanding at December 31, 2025
91 $2.21 
Granted1 4.38 
Exercised
(10)1.89 
Forfeited
(2)2.95 
Outstanding at June 30, 2026
80 $2.25 6.2$355 
Exercisable at June 30, 2026
60 $2.00 5.7$278