Stock-Based Compensation (Tables)

3 Months Ended

Mar. 30, 2013

Summary of Stock Option Plans Activity

A summary of activity under Nucor’s stock option plans for the first quarter of 2013 is as follows (in thousands, except year and per share amounts):

	Shares		Weighted - Average Exercise Price		Weighted - Average Remaining Contractual Life	Aggregate Intrinsic Value
Number of shares under option:
Outstanding at beginning of year		1,543	$	39.03
Granted		—		—
Exercised		—		—
Canceled		—		—
Outstanding at March 30, 2013		1,543	$	39.03	8.5 years	$	10,979
Options exercisable at March 30, 2013		—

Summary of Nucor's Restricted Stock Unit Activity

The fair value of the RSUs is determined based on the closing stock price of Nucor’s common stock on the day before the grant. A summary of Nucor’s RSU activity for the first quarter of 2013 is as follows (shares in thousands):

	Shares			Grant Date Fair Value
Restricted stock units:
Unvested at beginning of year		1,106		$	40.80
Granted		—			—
Vested		(30	)	$	48.76
Canceled		(3	)	$	38.14
Unvested at March 30, 2013		1,073		$	40.58
Shares reserved for future grants (stock options and RSUs)		11,847

Summary of Nucor's Restricted Stock Awards and Units Under AIP And LTIP

A summary of Nucor’s restricted stock activity under the AIP and LTIP for the first quarter of 2013 is as follows (shares in thousands):

	Shares			Grant Date Fair Value
Restricted stock awards and units:
Unvested at beginning of year		72		$	43.72
Granted		122		$	47.36
Vested		(113	)	$	46.42
Canceled		—			—
Unvested at March 30, 2013		81		$	45.44
Shares reserved for future grants		1,238