Stock-Based Compensation (Tables)

9 Months Ended

Sep. 28, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Plans Activity

A summary of activity under Nucor’s stock option plans for the first nine months of 2019 is as follows (in thousands, except years and per share amounts):

				Weighted-		Weighted-
				Average		Average	Aggregate
				Exercise		Remaining	Intrinsic
	Shares			Price		Contractual Life	Value
Number of shares under stock options:
Outstanding at beginning of year		3,828		$	49.71
Granted		489		$	48.00
Exercised		(153	)	$	38.56		$	3,058
Canceled		-		$	-
Outstanding at September 28, 2019		4,164		$	49.92	5.9 years	$	11,151
Stock options exercisable at September 28, 2019		2,914		$	47.13	4.7 years	$	10,283

Summary of Nucor's RSU Activity

The fair value of an RSU is determined based on the closing price of Nucor’s common stock on the date of the grant. A summary of Nucor’s RSU activity for the first nine months of 2019 is as follows (shares in thousands):

	Shares			Grant Date Fair Value
Restricted stock units:
Unvested at beginning of year		1,246		$	59.09
Granted		1,770		$	48.00
Vested		(1,177	)	$	52.39
Canceled		(29	)	$	57.53
Unvested at September 28, 2019		1,810		$	52.62

Summary of Nucor's Restricted Stock Activity under AIP and LTIP

A summary of Nucor’s restricted stock activity under the AIP and the LTIP for the first nine months of 2019 is as follows (shares in thousands):

				Grant Date
	Shares			Fair Value
Restricted stock units and restricted stock awards:
Unvested at beginning of year		130		$	62.97
Granted		316		$	58.04
Vested		(296	)	$	58.78
Canceled		-		$	-
Unvested at September 28, 2019		150		$	60.84