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That transaction was matchable under Section 16(b) of the Securities Exchange Act of 1934 with the reporting person's sale of PRIM Common Stock on December 17, 2019.  The reporting person's broker reversed the March 13, 2020 transaction by the sale reported herein, and the reporting person has paid to PRIM $24,904.84, representing the full amount of the profit realized in connection with the short-swing transaction (as calculated under Section 16 standards).  The average sale price for the December 17, 2019 transaction was erroneously reported in the reporting person's January 3, 2020 Form 4 as $23.13 per share due to a broker reporting error; it was $23.09 per share, with multiple transactions at prices ranging from $23.0676 to $23.1001 per share, inclusive."}],"balance_after":68128,"source":{"system":"sec-edgar","filing":"0001179110-20-004805","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1704011/000117911020004805/edgar.xml","form_type":"4"}},{"id":3208997,"issuer":{"id":1018,"kind":"organization","name":"Primoris Services Corp","symbol":"PRIM"},"owners":[{"id":81761,"kind":"person","name":"McCormick Thomas Edward","position":1,"cik":"0001704011","reported_name":"McCormick Thomas Edward","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Common Stock","published_at":"2020-03-16T09:00:23.000Z","date":"2020-03-13","kind":"purchase","acquired":true,"shares":2150,"price":11.49,"value":24703.5,"ownership":{"direct":true},"balance_after":70278,"source":{"system":"sec-edgar","filing":"0001179110-20-003685","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1704011/000117911020003685/edgar.xml","form_type":"4"}},{"id":3232955,"issuer":{"id":1018,"kind":"organization","name":"Primoris Services Corp","symbol":"PRIM"},"owners":[{"id":81761,"kind":"person","name":"McCormick Thomas Edward","position":1,"cik":"0001704011","reported_name":"McCormick Thomas Edward","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Restricted Stock Units","published_at":"2020-03-03T20:38:19.000Z","date":"2020-02-28","kind":"grant","acquired":true,"shares":11349,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of PRIM common stock or the cash value thereof on the date of settlement, in the Company's discretion."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The restricted stock units vest ratably over three years from the date of grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The restricted stock units vest ratably over three years from the date of grant."}],"balance_after":11349,"derivative":{"underlying":"Common Stock","underlying_shares":11349},"source":{"system":"sec-edgar","filing":"0001179110-20-002970","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1704011/000117911020002970/edgar.xml","form_type":"4"}},{"id":3323443,"issuer":{"id":1018,"kind":"organization","name":"Primoris Services Corp","symbol":"PRIM"},"owners":[{"id":81761,"kind":"person","name":"McCormick Thomas Edward","position":1,"cik":"0001704011","reported_name":"McCormick Thomas Edward","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Common Stock","published_at":"2020-01-03T14:53:22.000Z","date":"2019-12-17","kind":"sale","acquired":false,"shares":4500,"price":23.13,"value":104085.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported price in Column 4 is a weighted average price. 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Vested restricted stock units will be settled in stock or cash on the earlier of (i) six months following the reporting person's termination of employment; (ii) the date of the reporting person's death or the date the reporting person becomes disabled; (iii) the date of a change in control of the Company; or (iv) April 5, 2019."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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Vested restricted stock units will be settled in stock or cash on the earlier of (i) six months following the reporting person's termination of employment; (ii) the date of the reporting person's death or the date the reporting person becomes disabled; (iii) the date of a change in control of the Company; or (iv) April 5, 2019."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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Vested restricted stock units will be settled in stock or cash on the earlier of (i) six months following the reporting person's termination of employment; (ii) the date of the reporting person's death or the date the reporting person becomes disabled; (iii) the date of a change in control of the Company; or (iv) April 5, 2019."}],"balance_after":92372,"derivative":{"underlying":"Common Stock","underlying_shares":51},"source":{"system":"sec-edgar","filing":"0001179110-19-004699","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1704011/000117911019004699/edgar.xml","form_type":"4"}},{"id":3565191,"issuer":{"id":1018,"kind":"organization","name":"Primoris Services Corp","symbol":"PRIM"},"owners":[{"id":81761,"kind":"person","name":"McCormick Thomas Edward","position":1,"cik":"0001704011","reported_name":"McCormick Thomas Edward","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Restricted Stock Units","published_at":"2019-04-03T17:28:01.000Z","date":"2016-04-05","kind":"grant","acquired":true,"shares":92321,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of PRIM common stock or the cash value thereof on the date of settlement, in the Company's discretion."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in three installments: 25% on April 5, 2017, 25% on April 5, 2018, and 50% on April 5, 2019, subject to accelerated vesting upon the reporting person's termination without cause, death, disability, or a change in control of the Company. 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