PRIM

SEC source: 0001179110-18-011634 · edgar.xml · nonDerivative · entry 1

King David Lee · CIK 0001620715 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,242

F1 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.03 to $25.50 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-011635 · edgar.xml · nonDerivative · entry 2

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,707,848

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.15 to $25.50 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-011635 · edgar.xml · nonDerivative · entry 1

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,946,451

F1 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.04 to $25.15 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-011235 · edgar.xml · nonDerivative · entry 1

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,897

SEC source: 0001179110-19-004700 · edgar.xml · derivative · entry 2

Perisich John M. · CIK 0001441444 · Executive VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,431

Underlying: Common Stock · 14,431 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F3 · derivative.exercise_date: The restricted stock units vest on August 13, 2021, subject to accelerated vesting upon the reporting person's termination without cause, death, disability, or a change in control of the Company. 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) August 13, 2021.

F3 · derivative.expiration_date: The restricted stock units vest on August 13, 2021, subject to accelerated vesting upon the reporting person's termination without cause, death, disability, or a change in control of the Company. 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) August 13, 2021.

SEC source: 0001179110-19-004701 · edgar.xml · derivative · entry 2

STRICKER TRAVIS L · CIK 0001358632 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,850

Underlying: Common Stock · 5,850 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F3 · derivative.exercise_date: The restricted stock units vest on August 13, 2021, subject to accelerated vesting upon the reporting person's termination without cause, death, disability, or a change in control of the Company. 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) August 13, 2021.

F3 · derivative.expiration_date: The restricted stock units vest on August 13, 2021, subject to accelerated vesting upon the reporting person's termination without cause, death, disability, or a change in control of the Company. 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) August 13, 2021.

SEC source: 0001179110-18-011635 · edgar.xml · nonDerivative · entry 6

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by BLP 2018-2 Trust

Disclosed balance after: 847,428

F4 · shares: Transfer of shares of Common Stock to the BLP 2018-2 Retained Annuity Trust, of which Reporting Person is the trustee.

F6 · ownership.nature: Shares are held by the BLP 2018-2 Retained Annuity Trust, of which Reporting Person is the trustee.

SEC source: 0001179110-18-011635 · edgar.xml · nonDerivative · entry 5

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by BLP 2018-1 Trust

Disclosed balance after: 847,428

F3 · shares: Transfer of shares of Common Stock to the BLP 2018-1 Retained Annuity Trust, of which Reporting Person is the trustee.

F5 · ownership.nature: Shares are held by the BLP 2018-1 Retained Annuity Trust, of which Reporting Person is the trustee.

SEC source: 0001179110-18-011635 · edgar.xml · nonDerivative · entry 4

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,012,922

F4 · shares: Transfer of shares of Common Stock to the BLP 2018-2 Retained Annuity Trust, of which Reporting Person is the trustee.

SEC source: 0001179110-18-011635 · edgar.xml · nonDerivative · entry 3

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,860,420

F3 · shares: Transfer of shares of Common Stock to the BLP 2018-1 Retained Annuity Trust, of which Reporting Person is the trustee.

SEC source: 0001179110-18-010316 · edgar.xml · nonDerivative · entry 1

BROWN PETER CUMMINS · CIK 0001461814 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,785

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,682 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-18-010317 · edgar.xml · nonDerivative · entry 1

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,861

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,682 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-18-010315 · edgar.xml · nonDerivative · entry 1

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,432,851

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,682 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-18-010320 · edgar.xml · nonDerivative · entry 1

Tucker Thomas E. · CIK 0001441321 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,785

F3 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,682 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-18-010319 · edgar.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 398,729

F2 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,682 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

F1 · ownership.nature: Shares of Common Stock held by John P. Schauerman & Claudia H. Schauerman TR UA 08/12/10 Schauerman Family Trust.

SEC source: 0001179110-18-010318 · edgar.xml · nonDerivative · entry 1

TINSTMAN ROBERT A · CIK 0001202079 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,785

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,682 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-19-004702 · edgar.xml · derivative · entry 18

MOERBEEK PETER J · CIK 0001063315 · Former Exec. VP, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,599

Underlying: Common Stock · 226 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F3 · derivative.exercise_date: Represents dividend equivalent units on vested restricted stock units. 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 30, 2022.

F3 · derivative.expiration_date: Represents dividend equivalent units on vested restricted stock units. 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 30, 2022.

SEC source: 0001179110-19-004699 · edgar.xml · derivative · entry 7

McCormick Thomas Edward · CIK 0001704011 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 92,624

Underlying: Common Stock · 102 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F4 · derivative.exercise_date: Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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.

F4 · derivative.expiration_date: Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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.

SEC source: 0001179110-19-004698 · edgar.xml · derivative · entry 14

King David Lee · CIK 0001620715 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,549

Underlying: Common Stock · 109 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F4 · derivative.exercise_date: Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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) March 24, 2022.

F4 · derivative.expiration_date: Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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) March 24, 2022.

SEC source: 0001179110-19-004697 · edgar.xml · derivative · entry 3

Dodgen Kenneth Morris · CIK 0001707945 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,007

Underlying: Common Stock · 7 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F4 · derivative.exercise_date: Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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) May 22, 2020.

F4 · derivative.expiration_date: Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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) May 22, 2020.

SEC source: 0001179110-20-000454 · edgar.xml · derivative · entry 18

MOERBEEK PETER J · CIK 0001063315 · Former Exec. VP, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,599

Underlying: Common Stock · 226 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F3 · derivative.exercise_date: Represents dividend equivalent units on vested restricted stock units. 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 30, 2022.

F3 · derivative.expiration_date: Represents dividend equivalent units on vested restricted stock units. 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 30, 2022.

SEC source: 0001179110-18-009086 · edgar.xml · nonDerivative · entry 3

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 397,047

F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.98 to $28.43 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F1 · ownership.nature: Shares of Common Stock held by John P. Schauerman & Claudia H. Schauerman TR UA 08/12/10 Schauerman Family Trust.

SEC source: 0001179110-18-009086 · edgar.xml · nonDerivative · entry 2

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 400,349

F3 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.84 to $28.23 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F1 · ownership.nature: Shares of Common Stock held by John P. Schauerman & Claudia H. Schauerman TR UA 08/12/10 Schauerman Family Trust.

SEC source: 0001179110-18-009086 · edgar.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 420,349

F2 · shares: Gifted 10,000 shares of stock.

F1 · ownership.nature: Shares of Common Stock held by John P. Schauerman & Claudia H. Schauerman TR UA 08/12/10 Schauerman Family Trust.

SEC source: 0001179110-18-008912 · edgar.xml · nonDerivative · entry 3

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,431,169

F3 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.05 to $28.11 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-008912 · edgar.xml · nonDerivative · entry 2

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,445,373

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.05 to $28.20 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-008912 · edgar.xml · nonDerivative · entry 1

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,527,217

F1 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.09 to $28.42 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-007042 · edgar.xml · nonDerivative · entry 3

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,604,760

F3 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.02 to $25.51 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-007121 · edgar.xml · nonDerivative · entry 1

Perisich John M. · CIK 0001441444 · Executive VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Indirect · Family Trust

Disclosed balance after: 136,941

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.04 to $25.21 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F1 · ownership.nature: These shares are owned directly by the Perisich Family Trust dated July 11, 2007 and indirectly by John M. Perisich, as trustee of the trust. Mr. Perisich is Executive Vice President, General Counsel of Primoris.

SEC source: 0001179110-18-007042 · edgar.xml · nonDerivative · entry 2

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,664,760

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.00 to $25.355 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-007042 · edgar.xml · nonDerivative · entry 1

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,838,661

F1 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.00 to $25.035 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-19-004702 · edgar.xml · derivative · entry 17

MOERBEEK PETER J · CIK 0001063315 · Former Exec. VP, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,373

Underlying: Common Stock · 245 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F3 · derivative.exercise_date: Represents dividend equivalent units on vested restricted stock units. 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 30, 2022.

F3 · derivative.expiration_date: Represents dividend equivalent units on vested restricted stock units. 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 30, 2022.

SEC source: 0001179110-19-004699 · edgar.xml · derivative · entry 6

McCormick Thomas Edward · CIK 0001704011 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 92,522

Underlying: Common Stock · 56 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F4 · derivative.exercise_date: Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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.

F4 · derivative.expiration_date: Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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.

SEC source: 0001179110-19-004698 · edgar.xml · derivative · entry 13

King David Lee · CIK 0001620715 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,440

Underlying: Common Stock · 118 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F4 · derivative.exercise_date: Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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) March 24, 2022.

F4 · derivative.expiration_date: Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. 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) March 24, 2022.

SEC source: 0001179110-20-000454 · edgar.xml · derivative · entry 17

MOERBEEK PETER J · CIK 0001063315 · Former Exec. VP, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,373

Underlying: Common Stock · 245 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F3 · derivative.exercise_date: Represents dividend equivalent units on vested restricted stock units. 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 30, 2022.

F3 · derivative.expiration_date: Represents dividend equivalent units on vested restricted stock units. 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 30, 2022.

SEC source: 0001179110-18-003986 · edgar.xml · nonDerivative · entry 2

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,891,698

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.00 to $26.19 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-003986 · edgar.xml · nonDerivative · entry 1

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,036,941

F1 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.00 to $26.32 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-003786 · edgar.xml · nonDerivative · entry 3

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,073,336

F3 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.05 to $26.27 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-003786 · edgar.xml · nonDerivative · entry 2

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,360,000

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.00 to $26.08 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-003786 · edgar.xml · nonDerivative · entry 1

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,470,378

F1 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.00 to $26.125 per share, inclusive. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001179110-18-002976 · edgar.xml · nonDerivative · entry 1

MOERBEEK PETER J · CIK 0001063315 · Director · Exec. VP, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,863

F1 · price: Purchased Common Stock shares as part of the Company's Long-Term Retention Plan. The Plan provides certain management employees the opportunity to purchase Company stock with a defined portion of their annual incentive compensation at a discount to the market price. Purchases were made at a 25% reduction to the average closing price during December 2017. Shares cannot be sold for 6 months.

SEC source: 0001179110-18-002978 · edgar.xml · nonDerivative · entry 1

McCormick Thomas Edward · CIK 0001704011 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,045

F1 · price: Purchased Common Stock shares as part of the Company's Long-Term Retention Plan. The Plan provides certain management employees the opportunity to purchase Company stock with a defined portion of their annual incentive compensation at a discount to the market price. Purchases were made at a 25% reduction to the average closing price during December 2017. Shares cannot be sold for 6 months.

SEC source: 0001179110-18-002977 · edgar.xml · nonDerivative · entry 1

King David Lee · CIK 0001620715 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,108

F1 · price: Purchased Common Stock shares as part of the Company's Long-Term Retention Plan. The Plan provides certain management employees the opportunity to purchase Company stock with a defined portion of their annual incentive compensation at a discount to the market price. Purchases were made at a 25% reduction to the average closing price during December 2017. Shares cannot be sold for 6 months.

SEC source: 0001179110-18-002980 · edgar.xml · nonDerivative · entry 1

Perisich John M. · CIK 0001441444 · Executive VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Indirect · Family Trust

Disclosed balance after: 145,996

F2 · price: Purchased Common Stock shares as part of the Company's Long-Term Retention Plan. The Plan provides certain management employees the opportunity to purchase Company stock with a defined portion of their annual incentive compensation at a discount to the market price. Purchases were made at a 25% reduction to the average closing price during December 2017. Shares cannot be sold for 6 months.

F1 · ownership.nature: These shares are owned directly by the Perisich Family Trust dated July 11, 2007 and indirectly by John M. Perisich, as trustee of the trust. Mr. Perisich is Executive Vice President, General Counsel of Primoris.

SEC source: 0001179110-18-002696 · edgar.xml · nonDerivative · entry 1

BROWN PETER CUMMINS · CIK 0001461814 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,103

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,677 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-18-002695 · edgar.xml · nonDerivative · entry 1

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,179

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,677 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-18-002697 · edgar.xml · nonDerivative · entry 1

Pratt Brian · CIK 0001441252 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,524,751

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,677 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-18-002694 · edgar.xml · nonDerivative · entry 1

Tucker Thomas E. · CIK 0001441321 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,103

F3 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,677 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-18-002693 · edgar.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 430,349

F2 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,677 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

F1 · ownership.nature: Shares of Common Stock held by John P. Schauerman & Claudia H. Schauerman TR UA 08/12/10 Schauerman Family Trust.

SEC source: 0001179110-18-002698 · edgar.xml · nonDerivative · entry 1

TINSTMAN ROBERT A · CIK 0001202079 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,103

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 5, 2014, provides for the issuance of restricted stock with a value of $46,667 resulting in a grant of 1,677 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.