STOCK-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Range of Assumptions

The assumptions used to estimate the fair value of performance-based restricted stock units granted in 2019 were as follows:

Expected term (years)	0 to 0.5
Expected volatility	41.1%
Risk-free interest rate	2.1%
Vesting price(1)	$45.90 - $58.60
Grant date fair value per share	$39.60 - $48.75

(1)

The vesting price is the average of the daily volume-weighted average share price of U.S. Concrete's common stock over any period of 20 consecutive trading days within the three-year period beginning on the date of grant. These hurdles were established on March 1, 2019.