Sec Form 4/A Filing - DRYDEN SCOTT @ U.S. CONCRETE, INC. - 2020-03-01

FORM 4/A 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 DRYDEN SCOTT 2. Issuer Name and Ticker or Trading Symbol U.S. CONCRETE, INC. [ USCR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) VP & GM - Polaris Materials (Last) (First) (Middle) C/O US CONCRETE INC, 331 N. MAIN STREET 3. Date of Earliest Transaction (MM/DD/YY) 03/01/2020 (Street) EULESS, TX76039 4. If Amendment, Date Original Filed (MM/DD/YY) 03/03/2020 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 03/01/2020 M 460 A $ 0 1,552 ( 1 ) D

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 ( 2 ) 03/01/2020 M 460 ( 3 ) ( 4 ) ( 4 ) Common stock 460 $ 0 4,420 ( 5 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other DRYDEN SCOTT C/O US CONCRETE INC 331 N. MAIN STREET EULESS, TX76039 VP & GM - Polaris Materials Signatures /s/ CiCi Sepehri, as Attorney-in-Fact for Scott Dryden 03/19/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )As a result of the amendment set forth in footnote 3, the reporting person beneficially owned 1,552 shares of common stock on March 1, 2020 following the reported transaction. ( 2 )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. ( 3 )This amendment has been filed to correct the number of derivative securities disposed on March 1, 2020 to include an additional 460 restricted stock units (RSUs) that vested from the reporting person's March 1, 2018 award but were inadvertently excluded from the original filing due to clerical error. ( 4 )The Restricted Stock Units were granted on March 1, 2018 and will vest as follows: (i) 60% of the total number of the warded 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 shall vest on the day that the average of the daily volume-weighted average share price of the Company's stock over any period of 20 consecutive trading days attains $91.10 per share within the three-year period beginning on the date of grant, and the remaining half of which shall vest on the day that the average of the daily volume-weighted average share price of the Company's stock over any period of 20 consecutive trading days attains $99.10 per share within the three-year period beginning on the date of grant. ( 5 )The number of derivative securities beneficially owned following the reported transaction is comprised of 3,040 RSUs from the reporting person's March 1, 2019 award and 1,380 RSUs from his March 1, 2018 award.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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