PRIM

SEC source: 0001179110-22-001896 · edgar.xml · derivative · entry 5

STRICKER TRAVIS L · CIK 0001358632 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,617

Underlying: Common Stock · 979 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F1 · derivative.exercise_date: 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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F1 · derivative.expiration_date: 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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001179110-22-001896 · edgar.xml · nonDerivative · entry 2

STRICKER TRAVIS L · CIK 0001358632 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,312

F2 · kind: Withholding of common stock to satisfy reporting person's tax obligation upon the settlement of vested restricted stock units.

SEC source: 0001179110-22-001896 · edgar.xml · nonDerivative · entry 1

STRICKER TRAVIS L · CIK 0001358632 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,569

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · 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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001179110-22-001897 · edgar.xml · derivative · entry 5

Dodgen Kenneth Morris · CIK 0001707945 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,623

Underlying: Common Stock · 2,077 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F1 · derivative.exercise_date: 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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F1 · derivative.expiration_date: 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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001179110-22-001897 · edgar.xml · nonDerivative · entry 2

Dodgen Kenneth Morris · CIK 0001707945 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,167

F2 · kind: Withholding of common stock to satisfy reporting person's tax obligation upon the settlement of vested restricted stock units.

SEC source: 0001179110-22-001897 · edgar.xml · nonDerivative · entry 1

Dodgen Kenneth Morris · CIK 0001707945 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,673

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · 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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001179110-22-001894 · edgar.xml · derivative · entry 5

Moreno John F JR · CIK 0001773121 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,152

Underlying: Common Stock · 1,915 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal

F1 · derivative.exercise_date: 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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal

F1 · derivative.expiration_date: 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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal

SEC source: 0001179110-22-001894 · edgar.xml · nonDerivative · entry 2

Moreno John F JR · CIK 0001773121 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,897

F2 · kind: Withholding of common stock to satisfy reporting person's tax obligation upon the settlement of vested restricted stock units.

SEC source: 0001179110-22-001894 · edgar.xml · nonDerivative · entry 1

Moreno John F JR · CIK 0001773121 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,363

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · 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. On Feb. 28, 2022, the restricted stock units vested and were settled for an equal

SEC source: 0001179110-22-001623 · edgar.xml · nonDerivative · entry 1

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,366

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Dec. 2021, resulting in a grant of 1,206 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-22-001611 · edgar.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 308,347

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Dec. 2021, resulting in a grant of 1,206 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

F2 · ownership.nature: Shares of Common Stock held by John P. Schauerman & Claudia H. Schauerman TR UA 08/12/10 Schauerman Family Trust.

SEC source: 0001179110-22-001625 · edgar.xml · nonDerivative · entry 1

MASHINSKI CARLA S · CIK 0001286202 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,605

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Dec. 2021, resulting in a grant of 1,206 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-22-001608 · edgar.xml · nonDerivative · entry 1

TINSTMAN ROBERT A · CIK 0001202079 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,820

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Dec. 2021, resulting in a grant of 1,206 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-22-001627 · edgar.xml · nonDerivative · entry 1

MCCALLISTER TERRY D · CIK 0001216725 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,639

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Dec. 2021, resulting in a grant of 1,206 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-22-001616 · edgar.xml · nonDerivative · entry 1

Rodriguez Jose Ramon · CIK 0001859182 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,233

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Dec. 2021, resulting in a grant of 1,206 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-22-001605 · edgar.xml · nonDerivative · entry 1

Wagner Patricia K · CIK 0001663507 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,639

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Dec. 2021, resulting in a grant of 1,206 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-22-000128 · edgar.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 307,141

F1 · ownership.nature: Shares of Common Stock held by John P. Schauerman & Claudia H. Schauerman TR UA 08/12/2010 Schauerman Family Trust

SEC source: 0001179110-21-009851 · edgar.xml · nonDerivative · entry 1

King David Lee · CIK 0001620715 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,579

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Sep. 2021, resulting in a grant of 1,111 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-009853 · edgar.xml · nonDerivative · entry 1

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,160

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Sep. 2021, resulting in a grant of 1,111 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-009863 · edgar.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 309,141

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Sep. 2021, resulting in a grant of 1,111 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

F2 · ownership.nature: Shares of Common Stock held by John P. Schauerman & Claudia H. Schauerman TR UA 08/12/10 Schauerman Family Trust.

SEC source: 0001179110-21-009855 · edgar.xml · nonDerivative · entry 1

MASHINSKI CARLA S · CIK 0001286202 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,399

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Sep. 2021, resulting in a grant of 1,111 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-009861 · edgar.xml · nonDerivative · entry 1

TINSTMAN ROBERT A · CIK 0001202079 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,614

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Sep. 2021, resulting in a grant of 1,111 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-009859 · edgar.xml · nonDerivative · entry 1

MCCALLISTER TERRY D · CIK 0001216725 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,433

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Sep. 2021, resulting in a grant of 1,111 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-009857 · edgar.xml · nonDerivative · entry 1

Rodriguez Jose Ramon · CIK 0001859182 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,027

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Sep. 2021, resulting in a grant of 1,111 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-009849 · edgar.xml · nonDerivative · entry 1

Wagner Patricia K · CIK 0001663507 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,433

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Sep. 2021, resulting in a grant of 1,111 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-22-001621 · edgar.xml · nonDerivative · entry 1

King David Lee · CIK 0001620715 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,579

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during Sep. 2021, resulting in a grant of 1,111 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-009166 · edgar.xml · derivative · entry 4

Dodgen Kenneth Morris · CIK 0001707945 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,700

Underlying: Common Stock · 6,224 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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.

F4 · derivative.exercise_date: The restricted stock units vested in three equal annual installments on each of the first through the third anniversaries of October 3, 2018. The vested restricted stock units settled for an equal number of shares of PRIM common stock on October 3, 2021.

F4 · derivative.expiration_date: The restricted stock units vested in three equal annual installments on each of the first through the third anniversaries of October 3, 2018. The vested restricted stock units settled for an equal number of shares of PRIM common stock on October 3, 2021.

SEC source: 0001179110-21-009166 · edgar.xml · nonDerivative · entry 2

Dodgen Kenneth Morris · CIK 0001707945 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,596

F2 · kind: Withholding of common stock to satisfy reporting person's tax obligation upon the settlement of vested restricted stock units.

SEC source: 0001179110-21-009166 · edgar.xml · nonDerivative · entry 1

Dodgen Kenneth Morris · CIK 0001707945 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,112

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · 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.

SEC source: 0001179110-21-009166 · edgar.xml · derivative · entry 3

Dodgen Kenneth Morris · CIK 0001707945 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,924

Underlying: Common Stock · 10 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 in the form of restricted stock units with respect to 4,159 vested restricted stock units. The vested restricted stock units settled for an equal number of shares of PRIM common stock on October 3, 2021.

F3 · derivative.expiration_date: Represents dividend equivalent units in the form of restricted stock units with respect to 4,159 vested restricted stock units. The vested restricted stock units settled for an equal number of shares of PRIM common stock on October 3, 2021.

SEC source: 0001179110-21-008483 · edgar.xml · nonDerivative · entry 1

MCCALLISTER TERRY D · CIK 0001216725 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 10,000

F1 · price: The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $24.51 to $24.66 per share, inclusive. The holder undertakes to provide 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 purchased at each separate price within the range set forth in this footnote.

F2 · ownership.nature: These shares are owned by the Terry D. McCallister Trust dated 6/14/2013 and indirectly by Terry D. McCallister, as a trustee of the trust.

SEC source: 0001179110-21-008241 · edgar.xml · derivative · entry 3

Perisich John M. · CIK 0001441444 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,908

Underlying: Common Stock · 14,431 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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. On August 13, 2021, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F1 · derivative.exercise_date: 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. On August 13, 2021, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F1 · derivative.expiration_date: 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. On August 13, 2021, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001179110-21-008241 · edgar.xml · nonDerivative · entry 2

Perisich John M. · CIK 0001441444 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Family Trust

Disclosed balance after: 152,254

F2 · kind: Withholding of common stock to satisfy reporting person's tax obligation upon the settlement of vested restricted stock units.

F3 · 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 Chief Legal Officer of Primoris.

SEC source: 0001179110-21-008241 · edgar.xml · nonDerivative · entry 1

Perisich John M. · CIK 0001441444 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Family Trust

Disclosed balance after: 157,211

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · 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. On August 13, 2021, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F3 · 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 Chief Legal Officer of Primoris.

SEC source: 0001179110-21-008243 · edgar.xml · derivative · entry 3

STRICKER TRAVIS L · CIK 0001358632 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,596

Underlying: Common Stock · 5,850 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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. On August 13, 2021, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F1 · derivative.exercise_date: 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. On August 13, 2021, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F1 · derivative.expiration_date: 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. On August 13, 2021, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001179110-21-008243 · edgar.xml · nonDerivative · entry 2

STRICKER TRAVIS L · CIK 0001358632 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,590

F2 · kind: Withholding of common stock to satisfy reporting person's tax obligation upon the settlement of vested restricted stock units.

SEC source: 0001179110-21-008243 · edgar.xml · nonDerivative · entry 1

STRICKER TRAVIS L · CIK 0001358632 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,014

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · 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. On August 13, 2021, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001179110-21-007897 · edgar.xml · nonDerivative · entry 1

King David Lee · CIK 0001620715 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,468

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during June 2021, resulting in a grant of 916 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-007900 · edgar.xml · nonDerivative · entry 1

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,049

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during June 2021, resulting in a grant of 916 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-007889 · edgar.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 308,030

F2 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during June 2021, resulting in a grant of 916 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: 0001179110-21-007894 · edgar.xml · nonDerivative · entry 1

MASHINSKI CARLA S · CIK 0001286202 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,288

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during June 2021, resulting in a grant of 916 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-007883 · edgar.xml · nonDerivative · entry 2

TINSTMAN ROBERT A · CIK 0001202079 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,503

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during June 2021, resulting in a grant of 916 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-007892 · edgar.xml · nonDerivative · entry 1

MCCALLISTER TERRY D · CIK 0001216725 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,322

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during June 2021, resulting in a grant of 916 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-007887 · edgar.xml · nonDerivative · entry 1

Rodriguez Jose Ramon · CIK 0001859182 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 916

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during June 2021, resulting in a grant of 916 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-007885 · edgar.xml · nonDerivative · entry 1

Wagner Patricia K · CIK 0001663507 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,322

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated February 2020, provides for the issuance of restricted stock with a value of $28,500. The price per share was based on the average closing price during June 2021, resulting in a grant of 916 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001179110-21-007243 · edgar.xml · derivative · entry 3

Dodgen Kenneth Morris · CIK 0001707945 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,914

Underlying: Common Stock · 8 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 in the form of restricted stock units with respect to 4,151 vested restricted stock units. The 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) October 3, 2021.

F3 · derivative.expiration_date: Represents dividend equivalent units in the form of restricted stock units with respect to 4,151 vested restricted stock units. The 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) October 3, 2021.

SEC source: 0001179110-21-007245 · edgar.xml · derivative · entry 2

McCormick Thomas Edward · CIK 0001704011 · Director · CEO & President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,746

Underlying: Common Stock · 33,922 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.

F2 · derivative.exercise_date: The restricted stock units vest 25 percent on June 29, 2023, and 75 percent on June 29, 2024.

F2 · derivative.expiration_date: The restricted stock units vest 25 percent on June 29, 2023, and 75 percent on June 29, 2024.

SEC source: 0001179110-21-007251 · edgar.xml · derivative · entry 2

Perisich John M. · CIK 0001441444 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,339

Underlying: Common Stock · 11,873 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.

F2 · derivative.exercise_date: The restricted stock units vest 25 percent on June 29, 2023, and 75 percent on June 29, 2024.

F2 · derivative.expiration_date: The restricted stock units vest 25 percent on June 29, 2023, and 75 percent on June 29, 2024.

SEC source: 0001179110-21-007253 · edgar.xml · derivative · entry 2

STRICKER TRAVIS L · CIK 0001358632 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,446

Underlying: Common Stock · 3,393 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.

F2 · derivative.exercise_date: The restricted stock units vest 25 percent on June 29, 2023, and 75 percent on June 29, 2024.

F2 · derivative.expiration_date: The restricted stock units vest 25 percent on June 29, 2023, and 75 percent on June 29, 2024.

SEC source: 0001179110-21-007247 · edgar.xml · derivative · entry 2

Moreno John F JR · CIK 0001773121 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,067

Underlying: Common Stock · 15,265 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.

F2 · derivative.exercise_date: The restricted stock units vest 25 percent on June 29, 2023, and 75 percent on June 29, 2024.

F2 · derivative.expiration_date: The restricted stock units vest 25 percent on June 29, 2023, and 75 percent on June 29, 2024.