Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Share-based compensation disclosures

Schedule of stock option transactions under various stock-based employee compensation plans

				Weighted-
		Weighted-		Average
		Average		Remaining		Aggregate
		Exercise		Contractual		Intrinsic
Options	Shares	Price		Term		Value
	(In thousands, except exercise price and term)
Options outstanding as of December 31, 2020	31	$	628.10
Granted	1		104.06
Surrendered	(16)		817.89
Options outstanding as of December 31, 2021	16	$	419.22	5.42	years	$	—
Options exercisable as of December 31, 2021	16	$	419.22	5.42	years	$	—

Schedule of grant date fair value

	2021		2019
Weighted average fair value of options granted	$	72.69	$	53.50
Weighted average risk free interest rate		0.72%		1.79%
Dividend yield		0.00%		1.65%
Volatility (1)		102.50%		57.59%
Expected life (in years)		4.0		4.0

(1) Expected volatilities are based on implied volatilities from publicly traded options to purchase Nabors’ common shares, historical volatility of Nabors’ common shares and other factors.

Schedule of outstanding PSUs

The following table sets forth information regarding outstanding PSUs based on performance conditions as of December 31, 2021:

		Weighted-Average
		Grant-Date Fair
Restricted Stock Units	Outstanding	Value
	(In thousands, except fair value)
Outstanding as of December 31, 2020	31	$	148.00
Granted	96		88.27
Vested	(20)		148.00
Outstanding as of December 31, 2021	107	$	94.26

Restricted Stock [Member]

Share-based compensation disclosures

Schedule of unvested restricted stock

		Weighted-Average
		Grant-Date Fair
Restricted shares	Outstanding	Value
	(In thousands, except fair value)
Unvested as of December 31, 2020	49	$	226.06
Granted	83		105.44
Vested	(24)		261.96
Forfeited	(6)		95.99
Unvested as of December 31, 2021	102	$	127.00

Restricted Stock Based on Performance Conditions [Member]

Share-based compensation disclosures

Schedule of unvested restricted stock

		Weighted-Average
		Grant-Date Fair
Performance based restricted shares	Outstanding	Value
	(In thousands, except fair value)
Outstanding as of December 31, 2020	98	$	163.74
Vested	(42)		181.66
Outstanding as of December 31, 2021	56	$	150.02

Restricted Stock Based on Market Conditions [Member]

Share-based compensation disclosures

Schedule of grant date fair value

		Year Ended December 31,
	2021		2020		2019
Risk free interest rate		0.18%		1.57%		2.48%
Expected volatility		108.00%		74.00%		70.00%
Closing stock price at grant date	$	60.62	$	148.00	$	109.50
Expected term (in years)		3.0		3.0		3.0

Schedule of unvested restricted stock

		Weighted-Average
		Grant-Date Fair
Market based restricted shares	Outstanding	Value
	(In thousands, except fair value)
Outstanding as of December 31, 2020	79	$	91.34
Granted	62		34.69
Vested	(28)		83.35
Forfeited	(28)		83.35
Outstanding as of December 31, 2021	85	$	55.29