SHARE-BASED COMPENSATION PLANS

Share-based incentive awards are provided to employees under the terms of various share-based compensation plans (collectively, the “Plans”). The Plans are administered by the Compensation Committee of the Board of Directors. Awards under the plan principally include at-the-money stock options, unvested stock and cash awards. Unvested stock awards include grants of market-based, performance-based and time-vested restricted stock rights. Under the terms of our Plans, dividends on unvested stock are not paid unless the stock award vests. Upon vesting, the amount of the dividends paid is equal to the aggregate dividends declared on common shares during the period from the grant date of the award until the date the shares underlying the award are delivered.

The following table provides information on share-based compensation expense and income tax benefits recognized during the periods:



	Three months ended March 31,
	2019			2018
	(In thousands)
Stock option and stock purchase plans	$	1,819		1,875
Unvested stock	5,580			3,466
Share-based compensation expense	7,399			5,341
Income tax benefit	(1,160		)	(1,161	)
Share-based compensation expense, net of tax	$	6,239		4,180

During the three months ended March 31, 2019 and 2018, approximately 182,000 and 347,000 stock options, respectively, were granted under the Plans. These awards generally vest in equal annual installments over a three year period beginning on the date of grant. The stock options have contractual terms of ten years. The fair value of each option award at the date of grant was estimated using a Black-Scholes-Merton option-pricing valuation model. Share-based compensation expense is recognized on a straight-line basis over the vesting period. The weighted-average fair value per option granted during the three months ended March 31, 2019 and 2018 was $11.74 and $15.89, respectively.

During the three months ended March 31, 2019, there were no awards with a return on capital (ROC) performance-based vesting condition granted under the Plans. During the three months ended March 31, 2018, there were approximately 95,000 awards granted with a return on capital (ROC) performance-based vesting condition. The awards are segmented into three one-year performance periods. For these awards, up to 150% of the awards may be earned based on Ryder's one-year adjusted return on capital (ROC) measured against an annual ROC target. If earned, employees will receive the grant of stock three years after the grant date, provided they continue to be employed with Ryder, subject to Compensation Committee approval. For accounting purposes, these awards are not considered granted until the Compensation Committee approves the annual ROC target. During the three months ended March 31, 2019 and 2018, approximately 79,000 and 98,000 PBRSRs, respectively, were considered granted for accounting purposes. The fair value of the PBRSRs is determined and fixed on the grant date based on Ryder's stock price on the date of grant. Share-based compensation expense is recognized on a straight-line basis over the vesting period, based upon the probability that the performance target will be met. The weighted-average fair value per PBRSR granted during the three months ended March 31, 2019 and 2018 was $57.92 and $74.72, respectively.

During the three months ended March 31, 2019, and 2018, approximately 75,000 and 51,000 performance-based restricted stock rights (PBRSRs), respectively, were awarded under the Plans. For these awards, up to 200% of the awards may be earned based on the spread between Ryder's adjusted return on capital and the cost of capital (ROC/COC) measured against a three-year ROC/COC target. The majority of these awards include a TSR modifier. Ryder's TSR will be compared against the TSR of each of the companies in a custom peer group to determine Ryder's TSR percentile rank versus this custom peer group. The number of ROC/COC PBRSRs will then be adjusted based on Ryder's relative TSR percentile rank. The fair value of these PBRSRs is estimated using a lattice-based option-pricing valuation model that incorporates a Monte-Carlo simulation. Share-based compensation expense is recognized on a straight-line basis over the vesting period, based upon the probability that the performance target will be met. The weighted-average fair value per PBRSR granted during the three months ended March 31, 2019 and 2018 was $61.22 and $72.93, respectively.

During the three months ended March 31, 2019, and 2018, approximately 75,000 and 51,000 performance-based restricted stock rights (PBRSRs), respectively, were awarded under the Plans. For these awards, up to 200% of the awards may be earned based on Ryder's strategic revenue growth (SRG) measured against a three-year SRG target. The majority of these awards include a TSR modifier. Ryder's TSR will be compared against the TSR of each of the companies in a custom peer group to determine Ryder's TSR percentile rank versus this custom peer group. The number of SRG PBRSRs will then be adjusted based on Ryder's relative TSR percentile rank. The fair value of these PBRSRs is estimated using a lattice-based option-pricing valuation model that incorporates a Monte-Carlo simulation. Share-based compensation expense is recognized on a straight-line basis over the vesting period, based upon the probability that the performance target will be met. The weighted-average fair value per PBRSR granted during the three months ended March 31, 2019 and 2018 was $61.22 and $72.93, respectively.

During the three months ended March 31, 2019 and 2018, approximately 298,000 and 132,000 time-vested restricted stock rights, respectively, were granted under the Plans. The time-vested restricted stock rights entitle the holder to shares of common stock when the awards vest. The 2019 awards primarily vest in equal annual installments over a three-year period beginning on the date of grant. In 2018, 104,000 of the awards granted vest in equal annual installments over a three-year period beginning on the date of grant. The remaining awards granted in 2018 vest at the end of the three-year period. The fair value of the time-vested awards is determined and fixed based on Ryder’s stock price on the date of grant. Share-based compensation expense is recognized on a straight-line basis over the vesting period. The weighted-average fair value per time-vested restricted stock right granted during the three months ended March 31, 2019 and 2018 was $57.92 and $76.69, respectively.

Certain employees were granted cash awards prior to 2016 as part of our long-term incentive compensation program. The cash awards are accounted for as liability awards under the share-based compensation accounting guidance as the awards are based upon the performance of our common stock and are settled in cash. As a result, the liability is adjusted to reflect fair value at the end of each reporting period. The fair value of the cash awards was estimated using a lattice-based option-pricing valuation model that incorporates a Monte-Carlo simulation. Share-based compensation expense is recognized on a straight-line basis over the vesting period. There was no compensation expense associated with cash awards during the three months ended March 31, 2019. The compensation expense associated with cash awards was not material for the three months ended March 31, 2018.

Total unrecognized pre-tax compensation expense related to all share-based compensation arrangements at March 31, 2019, was $53 million and is expected to be recognized over a weighted-average period of 2.1 years.