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Net Income (Loss) Per Share Attributable to Common Stockholders
 3 Months Ended
Mar. 31, 2025
Earnings Per Share [Abstract]  
Net Income (Loss) Per Share Attributable to Common Stockholders Net Income (Loss) Per Share Attributable to Common Stockholders
The Company computes net income (loss) per share in accordance with ASC 260 “Earnings per Share”. Basic net income (loss) per share attributable to common stockholders is computed by dividing net income (loss) attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. Diluted net income (loss) per share gives effect to all dilutive potential common shares outstanding during the period, such as stock options, RSUs, including PSUs, and shares partially paid for under ESPP, using the treasury stock method; PSUs follow the contingently issuable shares guidance. Diluted net income (loss) per share excludes all dilutive potential common shares if their effect is anti-dilutive.
The following table sets forth the calculation of basic and diluted net income (loss) per share attributable to common stockholders during the periods presented:
Three Months Ended
March 31,
20252024
Numerator:
Net income (loss) attributable to common stockholders (in thousands)$20,017 $(55,349)
Denominator:
Weighted-average shares outstanding, basic153,345,192 181,017,726 
Dilutive effect of outstanding stock options, RSUs and stock committed under ESPP
8,449,095 — 
Weighted-average shares outstanding, diluted
161,794,287 181,017,726 
Net income (loss) per share attributable to common stockholders:
Basic
$0.13 $(0.31)
Diluted
$0.12 $(0.31)
The following outstanding shares of common stock equivalents were excluded from the calculation of the diluted net loss per share attributable to common stockholders because their effect would have been anti-dilutive:
As of March 31,
20252024
Stock options issued and outstanding145,350 1,584,426 
Unvested restricted stock units issued and outstanding(1)
1,384,775 16,173,773 
Shares of Class A common stock reserved for Twilio.org— 419,939 
Shares of Class A common stock committed under ESPP— 396,611 
Shares of Class A common stock in escrow subject to future vesting— 3,771 
Total1,530,125 18,578,520 
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(1) A portion of these unvested restricted stock units are PSUs. The number of PSUs that will ultimately vest may increase or decrease the number of shares that will be issued at the end of the performance period.