Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity

A summary of stock option activity for the year ended December 31, 2021 is presented below:

	Number of Shares			Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value (1)
						(in years)		(in thousands)
Outstanding as of December 31, 2020		33,354,871		$	0.02
Granted		1,664,251		$	0.50
Exercised		(10,969,639	)	$	0.02
Forfeited		(1,594,820	)	$	0.02
Outstanding as of December 31, 2021		22,454,663		$	0.05		2.32	$	185,620
Exercisable as of December 31, 2021		22,385,232		$	0.02		2.30	$	185,620

(1) The aggregate intrinsic value is calculated as the difference between the Company's closing stock price on the last trading day of the year and the exercise prices, multiplied by the number of in-the-money stock options.

Schedule of Assumptions Used to Estimate Fair Value of Stock Option Awards Granted

The weighted-average fair value of options granted during the year ended December 31, 2021 was $8.97 per share and was calculated using the following assumptions. No options were granted during 2020 and 2019.

	Year Ended
	December 31, 2021
Risk-free interest rate		0.11	%
Dividend yield		0	%
Expected volatility		88.6	%
Expected term (in years)		0.96

Summary of RSU and RSA Activity

A summary of the RSU and RSA activity for the year ended December 31, 2021 is presented below:

	Restricted Stock Units					Restricted Stock Awards
	Number of Shares			Weighted Average Grant Date Fair Value (1)		Number of Shares			Weighted Average Grant Date Fair Value
Nonvested as of December 31, 2020		124,932,207		$	1.74		419,049		$	1.99
Granted		133,307,479		$	13.53		—
Vested		(85,829,389	)	$	13.39		(236,427	)	$	1.99
Forfeited		(4,088,345	)	$	5.23		—
Nonvested as of December 31, 2021		168,321,952		$	13.58		182,622		$	1.99

(1) The weighted average grant date fair value of awards nonvested as of December 31, 2020 and awards forfeited prior to the modification date reflect the original grant date fair value and not the modification-date fair value.

Schedule of Assumptions Used to Estimate Fair Value, Earnout RSUs

The grant date fair value of Earnout RSUs was estimated on the Closing Date and remeasured on the modification date using a Monte Carlo simulation model with the following assumptions:

	Year Ended
	December 31, 2021
Risk-free interest rate	0.84% - 1.21%
Expected volatility	53.1% - 81%
Expected term (in years)	4.83 - 5
Dividend yield		—

Summary of Activity For Earnout RSA

A summary of activity during the year ended December 31, 2021 for the Earnout RSUs and the earnout shares underlying Old Ginkgo RSAs ("Earnout RSAs") is presented below:

	Number of Shares			Weighted Average Grant Date Fair Value
Nonvested as of December 31, 2020		—
Granted		30,539,475		$	12.91
Vested		(2,580,570	)	$	13.33
Forfeited		(95,780	)	$	12.92
Nonvested as of December 31, 2021		27,863,125		$	12.87

Summary of Stock-based Compensation

Stock-based compensation expense was allocated as follows (in thousands):

	Year Ended December 31,
	2021		2020		2019
Research and development	$	926,730	$	79	$	64
General and administrative		755,835		397		707
Total	$	1,682,565	$	476	$	771