Stock-based Compensation Expense

3 Months Ended

Apr. 30, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-based Compensation Expense

Stock-based Compensation Expense

Stock Options:

A summary of stock option activity for the three months ended April 30, 2019 is as follows:

	Number of shares (in millions)		Weighted average exercise price per share		Weighted average remaining contractual term (in years)	Aggregate intrinsic value (1) (in millions)
Options outstanding at January 31, 2019	0.8		$	23.95
Exercised	(0.1	)	24.72
Options outstanding at April 30, 2019	0.7		$	23.92	7.5	$	115.2
Options vested and exercisable at April 30, 2019	0.2		$	34.91	3.5	$	22.7
Shares available for grant at April 30, 2019	—

_______________

(1) Represents the total pre-tax intrinsic value, based on Autodesk’s closing stock price of $178.21 per share as of April 30, 2019.

As of April 30, 2019, compensation cost of $58.5 million related to non-vested stock options is expected to be recognized over a weighted average period of 2.6 years.

The following table summarizes information about the pre-tax intrinsic value of options exercised during the three months ended April 30, 2019 and 2018:

(in millions)	Three months ended April 30,
	2019		2018
Pre-tax intrinsic value of options exercised (1)	$	8.4	$	3.4

——————

(1) The intrinsic value of options exercised is calculated as the difference between the exercise price of the option and the market value of the stock on the date of exercise.

Restricted Stock Units:

A summary of restricted stock activity for the three months ended April 30, 2019, is as follows:

	Unvested restricted stock units		Weighted average grant date fair value per share
	(in thousands)
Unvested restricted stock units at January 31, 2019	4,287.4		$	120.07
Granted	904.8		157.69
Vested	(429.6	)	117.08
Canceled/Forfeited	(104.5	)	123.87
Performance Adjustment (1)	23.8		156.69
Unvested restricted stock units at April 30, 2019	4,681.9		$	127.70

 _______________

(1) Based on Autodesk's financial results and relative total stockholder return for the fiscal 2019 performance period. The performance stock units were attained at rates ranging from 105.2% to 122.5% of the target award.

The fair value of the shares vested during the three months ended April 30, 2019 and 2018, was $50.3 million and $96.2 million, respectively.

During the three months ended April 30, 2019, Autodesk granted 0.7 million restricted stock units. Autodesk recorded stock-based compensation expense related to restricted stock units of $54.4 million and $41.7 million during the three months ended April 30, 2019 and 2018, respectively.

During the three months ended April 30, 2019, Autodesk granted 0.3 million performance stock units for which the ultimate number of shares earned is determined based on the achievement of performance criteria at the end of the stated service and performance period. The performance criteria for the performance stock units are based on Annualized Recurring Revenue ("ARR") and free cash flow goals adopted by the Compensation and Human Resource Committee, as well as total stockholder return compared against companies in the S&P North American Technology Software Index with a market capitalization over $2.0 billion (“Relative TSR”). These performance stock units vest over a three-year period and have the following vesting schedule:

• Up to one third of the performance stock units may vest following year one, depending upon the achievement of the performance criteria for fiscal 2020 as well as 1-year Relative TSR (covering year one).

• Up to one third of the performance stock units may vest following year two, depending upon the achievement of the performance criteria for year two as well as 2-year Relative TSR (covering years one and two).

• Up to one third of the performance stock units may vest following year three, depending upon the achievement of the performance criteria for year three as well as 3-year Relative TSR (covering years one, two and three).

Performance stock units are not considered outstanding stock at the time of grant, as the holders of these units are not entitled to any of the rights of a stockholder, including voting rights. Autodesk has determined the grant date fair value for these awards using the stock price on the date of grant or if the awards are also subject to a market condition, a Monte Carlo simulation model. The fair value of the performance stock units is expensed using the accelerated attribution over the vesting period. Autodesk recorded stock-based compensation expense related to performance stock units of $6.5 million for both the three months ended April 30, 2019 and 2018.

1998 Employee Qualified Stock Purchase Plan (“ESPP”)

Under Autodesk’s ESPP, which was approved by stockholders in 1998, eligible employees may purchase shares of Autodesk’s common stock at their discretion using up to 15% of their eligible compensation, subject to certain limitations, at 85% of the lower of Autodesk's closing price (fair market value) on the offering date or the exercise date. The offering period for ESPP awards consists of four, six-month exercise periods within a 24-month offering period.

A summary of the ESPP activity for the three months ended April 30, 2019 and 2018, is as follows:

	Three months ended April 30,
	2019		2018
Issued shares (in millions)	0.5		0.5
Average price of issued shares	$	99.46	$	88.45
Weighted average grant date fair value of awards granted under the ESPP (1)	$	52.41	$	37.64

 _______________

(1) Calculated as of the award grant date using the Black-Scholes Merton (“BSM") option pricing model.

Stock-based Compensation Expense

The following table summarizes stock-based compensation expense for the three months ended April 30, 2019 and 2018, respectively, as follows:

	Three months ended April 30,
	2019			2018
Cost of subscription and maintenance revenue	$	3.6		$	2.7
Cost of other revenue	1.3			0.8
Marketing and sales	32.5			24.0
Research and development	26.7			17.8
General and administrative	11.1			9.1
Stock-based compensation expense related to stock awards and ESPP purchases	75.2			54.4
Tax benefit	(0.2		)	(0.4		)
Stock-based compensation expense related to stock awards and ESPP purchases, net of tax	$	75.0		$	54.0

Stock-based Compensation Expense Assumptions

Autodesk determines the grant date fair value of its share-based payment awards using a BSM option pricing model or the quoted stock price on the date of grant, unless the awards are subject to market conditions, in which case Autodesk uses a binomial-lattice model (e.g., Monte Carlo simulation model). The Monte Carlo simulation model uses multiple input variables to estimate the probability that market conditions will be achieved. Autodesk uses the following assumptions to estimate the fair value of stock-based awards:

 

	Three months ended April 30, 2019		Three months ended April 30, 2018
	Performance Stock Unit	ESPP	Performance Stock Unit	ESPP
Range of expected volatilities	36.3%	36.6 - 39.7%	35.7%	33.5 - 37.5%
Range of expected lives (in years)	N/A	.5 - 2.0	N/A	0.5 - 2.0
Expected dividends	—%	—%	—%	—%
Range of risk-free interest rates	2.5%	2.4 - 2.5%	2.0%	1.9 - 2.3%

Autodesk estimates expected volatility for stock-based awards based on the average of the following two measures: (1) a measure of historical volatility in the trading market for the Company’s common stock, and (2) the implied volatility of traded forward call options to purchase shares of the Company’s common stock. The expected volatility for performance stock units subject to market conditions includes the expected volatility of Autodesk's peer companies within the S&P North American Technology Software Index with a market capitalization over $2.0 billion, depending on the award type.

The range of expected lives of ESPP awards are based upon the four, six-month exercise periods within a 24-month offering period.

Autodesk does not currently pay, and does not anticipate paying in the foreseeable future, any cash dividends. Consequently, an expected dividend yield of zero is used in the BSM option pricing model and the Monte Carlo simulation model.

The risk-free interest rate used in the BSM option pricing model and the Monte Carlo simulation model for stock-based awards is the historical yield on U.S. Treasury securities with equivalent remaining lives.

Autodesk recognizes expense only for the stock-based awards that ultimately vest. Autodesk accounts for forfeitures of our stock-based awards as those forfeitures occur.