X0305 4/A 2012-04-01 2012-04-02 0 0001073429 US CONCRETE INC USCR 0001539993 HARGIS KATHERINE I C/O US CONCRETE INC 2925 BRIARPARK SUITE 1050 HOUSTON TX 77042 0 1 0 0 Corp Sec/Deputy Gen. Counsel Common stock 2012-04-01 4 A 0 10000 0 A 10582 D Common stock 2012-04-01 4 M 0 170 0 A 10752 D Common stock 2012-04-01 4 F 0 53 4.66 D 10699 D Restricted stock units 2012-04-01 4 M 0 170 0 D common stock 170 1016 D Represents restricted shares granted under the Company's Management Equity Incentive Plan, to vest as follows: (i) twenty percent (20%) of the total number of shares of the restricted shares will become vested in equal annual installments on each of the first three anniversaries of the Grant Date, and forty percent (40%) of the restricted shares granted shall time-and-performance-vest (the "Time-And-Performance Shares") with fifty percent (50%) of the Time-And-Performance Shares vesting should the share price of the Company's Common Stock attain a market-closing share price of $10.00 per share for ten (10) consecutive days within three (3) years from the date of grant and fifty percent (50%) of the Time-And-Performance Shares vesting should the share price of the Company's Common Stock attain a market-closing share price of $14.00 per share for ten (10) consecutive days within three years from the date of grant. Each restricted stock unit represents the right to receive without payment one share of common stock of the Company. The restricted stock units vest as to one-twelfth (1/12) of the shares subject thereto on each of the first twelve (12) quarterly anniversaries of October 1, 2010. /s/ Stephanie Collins, as Attorney-in-Fact for Katherine I. Hargis 2012-04-10