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The vesting reported herein represents the first of three Time-Based awards that vest over three years in equal, annual installments from the date of grant."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The  Performance-Based portion of the March 1, 2019 Restricted Stock Units 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 2,560 shares) and (ii) $58.60 per share (resulting in the vesting into a further additional 2,560 shares) within the three-year period from the date of grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"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 5/16/2019 and the remaining half of which vested on 10/14/2019. 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These shares were sold in multiple transactions at prices ranging from $46.45 to $46.48, inclusive.  The reporting person undertakes to provide to U.S. Concrete, Inc., any security holder of U.S. Concrete, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1)."}],"balance_after":18781,"source":{"system":"sec-edgar","filing":"0001073429-19-000144","document":"wf-form4_155959664336623.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1073429/000107342919000144/wf-form4_155959664336623.xml","form_type":"4"}},{"id":3518998,"issuer":{"id":135936,"kind":"organization","name":"U.S. CONCRETE, INC.","symbol":"USCR"},"owners":[{"id":53806,"kind":"person","name":"JOLAS PAUL M","position":1,"cik":"0001245559","reported_name":"JOLAS PAUL M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, General Counsel, Corp Sec"}}],"security":"Restricted stock units","published_at":"2019-05-20T19:31:18.000Z","date":"2019-05-16","kind":"exercise","acquired":false,"shares":2560,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit was granted from the U.S. Concrete, Inc. 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