Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION

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STOCK-BASED COMPENSATION
3 Months Ended
Mar. 31, 2021
Share-based Payment Arrangement [Abstract]  
STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION
We issue share-based awards under various incentive compensation plans, which permit the grant of non-qualified and incentive stock options, stock appreciation rights, restricted stock and stock units, and restricted performance shares and performance units to eligible employees (restricted stock and stock units, restricted performance shares and performance units are herein referred to as "Restricted Units"). Upon vesting, Restricted Units result in the issuance of the equivalent number of UPS class A common shares after required tax withholdings. Dividends accrued on Restricted Units are reinvested in additional Restricted Units at each dividend payable date and are subject to the same vesting and forfeiture conditions as the underlying Restricted Units upon which they are earned.
The primary compensation programs offered under the UPS Incentive Compensation Plan include the UPS Management Incentive Award program, the UPS Long-Term Incentive Performance Award program and the UPS Stock Option program. We also maintain an employee stock purchase plan which allows eligible employees to purchase shares of UPS class A common stock at a discount. Additionally, our matching contributions to our primary employee defined contribution savings plan are made in shares of UPS class A common stock.
Management Incentive Award Program ("MIP")
We award Restricted Units under the MIP to certain eligible management employees. These Restricted Units vest one year following the grant date (except in the case of death, disability or retirement, in which case immediate vesting occurs). The grant value is expensed on a straight-line basis (less estimated forfeitures) over the requisite service period (except in the case of death, disability or retirement, in which case immediate expensing occurs).
Based on the date that the eligible management population and performance targets were approved for the 2020 MIP, we determined the award measurement dates to be February 10, 2021 (for U.S.-based employees and executive management) and March 22, 2021 (for international-based employees); therefore, the Restricted Units awarded were valued for stock compensation expense purposes using the closing New York Stock Exchange ("NYSE") price of $165.66, and $161.06 on those dates, respectively.
Long-Term Incentive Performance Award Program ("LTIP")
We award Restricted Units under the LTIP to certain eligible management employees. These Restricted Units generally vest at the end of a three-year performance period (except in the case of death, disability or retirement, in which case immediate vesting occurs on a prorated basis). The number of Restricted Units earned is based on the achievement of the performance targets established on the grant date.
For awards granted prior to 2020, the performance targets are equally weighted among consolidated operating return on invested capital ("ROIC"), growth in currency-constant consolidated revenue and total shareholder return ("RTSR") relative to a peer group of companies. For the two-thirds of the award related to ROIC and growth in currency-constant consolidated revenue, we recognize the grant date fair value of these Restricted Units (less estimated forfeitures) as compensation expense ratably over the vesting period, based on the number of awards expected to be earned. The remaining one-third of the award related to RTSR is valued using a Monte Carlo model. We recognize the grant date fair value of this portion of the award (less estimated forfeitures) as compensation expense ratably over the vesting period.
Beginning with the LTIP grant that was made in the second quarter of 2020, the performance targets are equally weighted between adjusted earnings per share and adjusted cumulative free cash flow. The final number of Restricted Units earned will then be subject to adjustment based on RTSR relative to the Standard & Poors 500 Index ("S&P 500"). We determine the grant date fair value of the Restricted Units using a Monte Carlo model and recognize compensation expense (less estimated forfeitures) ratably over the vesting period, based on the number of awards expected to be earned.
For the 2020 award, the LTIP was divided into two measurement periods. The first measurement period evaluated the achievement of the performance targets for 2020. The second measurement period will evaluate the achievement of the performance targets for the years 2021 through 2022. The performance targets for the second measurement period were approved on March 25, 2021 and the target Restricted Units awarded were valued at $167.66 on that date.
The eligible management employees and performance targets for the 2021 LTIP award were also approved on March 25, 2021. We therefore determined this to be the award measurement date and the target Restricted Units awarded were valued at $166.52.
The weighted-average assumptions used and the calculated weighted-average fair values of the LTIP awards granted in 2021 and 2020 are as follows:
2021 2020
Risk-free interest rate 0.19  % 0.15  %
Expected volatility 30.70  % 27.53  %
Weighted-average fair value of units granted $ 167.17  $ 92.77 
Share payout 102.40  % 101.00  %
There is no expected dividend yield as units earn dividend equivalents.
Non-Qualified Stock Options
We grant non-qualified stock options to a limited group of eligible senior management employees under the UPS Stock Option program. Stock option awards generally vest over a five-year period with approximately 20% of the award vesting at each anniversary of the grant date (except in the case of death, disability or retirement, in which case immediate vesting occurs). The options granted expire 10 years after the date of the grant. In the first quarter of 2021, we granted 0.2 million stock options at a grant price of $165.66, which was the NYSE closing price on February 10, 2021.
The fair value of each option grant is estimated using the Black-Scholes option pricing model. The weighted-average assumptions used and the calculated weighted-average fair values of options granted in 2021 and 2020 are as follows:
2021 2020
Expected dividend yield 3.31  % 3.51  %
Risk-free interest rate 0.84  % 1.26  %
Expected life (in years) 7.5 7.5
Expected volatility 23.15  % 19.25  %
Weighted-average fair value of options granted $ 23.71  $ 11.74 
Pre-tax compensation expense for share-based awards recognized in "Compensation and benefits" on the statements of consolidated income for the three months ended March 31, 2021 and 2020 was $315 and $231 million, respectively.