Sec Form 4 Filing - SANDBROOK WILLIAM J @ U.S. CONCRETE, INC. - 2020-04-03

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person SANDBROOK WILLIAM J 2. Issuer Name and Ticker or Trading Symbol U.S. CONCRETE, INC. [ USCR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chairman and CEO (Last) (First) (Middle) C/O U.S. CONCRETE, INC., 331 N. MAIN ST. 3. Date of Earliest Transaction (MM/DD/YY) 04/03/2020 (Street) EULESS, TX76039 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common stock 04/03/2020 M 23,440 ( 1 ) A $ 0 433,540 D Common stock 04/03/2020 F 11,861 ( 1 ) D $ 14.16 421,679 D Common stock 04/03/2020 D 13,400 ( 2 ) D $ 0 408,279 D Common stock 02/28/2020 G V 4,280 D $ 0 403,999 D Common stock 02/28/2020 G( 3 ) V 535 D $ 0 403,464 D Common stock 02/28/2020 G( 3 ) V 535 A $ 0 1,512 I By Reporting Person as UGMA custodian for granddaughter

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Restricted stock units ( 4 ) 04/03/2020 M 23,440 ( 5 )( 6 ) ( 5 )( 6 ) Common stock 23,440 $ 0 23,440 ( 6 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other SANDBROOK WILLIAM J C/O U.S. CONCRETE, INC. 331 N. MAIN ST. EULESS, TX76039 X Chairman and CEO Signatures /s/ CiCi S. Sepehri, as Attorney-in-Fact for William J. Sandbrook 04/07/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to the Company's Form 8-K filed with the SEC on February 14, 2020, Mr. Sandbrook had an accelerated vesting on April 3, 2020 of his Time-Based restricted stock units granted on March 1, 2019 and his Time-Based restricted stock granted on March 1, 2018. ( 2 )Mr. Sandbrook's Performance-Based restricted stock granted on March 1, 2018 was forfeited on April 3, 2020 pursuant to his executive transition agreement filed with the SEC via the Company's Form 8-K noted in footnote 1. ( 3 )This transaction involved a gift of securities by Mr. Sandbrook to his granddaughter, a minor, and is a transfer to Mr. Sandbrook as custodian for his granddaughter under the Uniform Gifts to Minors Act. Mr. Sandbrook disclaims beneficial ownership of these shares, and this report shall not be deemed an admission that he is the beneficial owner of these shares for purposes of Section 16 or for any other purpose. ( 4 )Each Restricted Stock Unit was granted from the U.S. Concrete, Inc. Long Term Incentive Plan and represents the right to receive one share of common stock upon vesting or, as set forth in footnote 6, two shares of common stock in the aggregate. ( 5 )The Restricted Stock Units were granted on March 1, 2019 and will vest as follows: (i) 60% of the total number of the awarded shares are Time-Based and will become vested over three years in equal annual installments from the date of grant, and (ii) the remaining 40% of the awarded shares are Performance-Based, half (or 50%) of which vested on May 16, 2019 and the remaining half of which vested on October 14, 2019. The vesting reported herein represents the remaining Time-Based awards that had accelerated vesting pursuant to Mr. Sandbrook's executive transition agreement filed via Form 8-K as noted above. ( 6 )The Performance-Based portion of the March 1, 2019 Restricted Stock Units remaining would result in vesting into additional shares if the average of the daily volume weighted average share price (VWAP) over any period of 20 consecutive trading days attains (i) $54.10 per share (resulting in the vesting into an additional 11,720 shares) and (ii) $58.60 per share (resulting in the vesting into a further additional 11,720 shares) within the three-year period from the date of grant. Pursuant to Mr. Sandbrook's executive transition agreement noted above, the Performance-Based restricted stock units granted on March 1, 2019 shall remain outstanding.

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