PRIM

SEC source: 0001415889-23-014763 · form4-11032023_081120.xml · nonDerivative · entry 1

Ching Michael E. · CIK 0001924790 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,815

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during September 2023, resulting in a grant of 975 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-014748 · form4-11032023_081142.xml · nonDerivative · entry 1

King David Lee · CIK 0001620715 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,719

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during September 2023, resulting in a grant of 975 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-014766 · form4-11032023_081123.xml · nonDerivative · entry 1

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,827

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during September 2023, resulting in a grant of 975 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-014755 · form4-11032023_081106.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 257,281

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during September 2023, resulting in a grant of 975 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: 0001415889-23-014757 · form4-11032023_081123.xml · nonDerivative · entry 1

MASHINSKI CARLA S · CIK 0001286202 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,539

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during September 2023, resulting in a grant of 975 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-014746 · form4-11032023_081122.xml · nonDerivative · entry 1

MCCALLISTER TERRY D · CIK 0001216725 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,573

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during September 2023, resulting in a grant of 975 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-014760 · form4-11032023_081145.xml · nonDerivative · entry 1

Wagner Patricia K · CIK 0001663507 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,573

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during September 2023, resulting in a grant of 975 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-014752 · form4-11032023_081153.xml · nonDerivative · entry 1

Rodriguez Jose Ramon · CIK 0001859182 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,167

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during September 2023, resulting in a grant of 975 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-25-011677 · form4-05012025_060505.xml · nonDerivative · entry 1

King David Lee · CIK 0001620715 · Director · INTERIM PRESIDENT & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,719

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during September 2023, resulting in a grant of 975 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-013187 · form4-09122023_060901.xml · nonDerivative · entry 1

Perisich John M. · CIK 0001441444 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Indirect · Family Trust

Disclosed balance after: 145,214

F1 · price: These shares were sold in multiple transactions at prices ranging from $33.02 to $33.43 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 sold at each separate price within the range set forth in this footnote.

F2 · 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 at Primoris.

SEC source: 0001415889-23-012778 · form4-08292023_060801.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 256,306

F1 · price: These shares were sold in multiple transactions at prices ranging from $34.80 to $34.81 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 sold at each separate price within the range set forth in this footnote.

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: 0001415889-23-012160 · form4-08112023_070801.xml · nonDerivative · entry 2

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,852

F2 · price: These shares were sold in multiple transactions at prices ranging from $34.04 to $34.11 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0001415889-23-012162 · form4-08112023_070805.xml · nonDerivative · entry 1

Ching Michael E. · CIK 0001924790 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,840

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during June 2023, resulting in a grant of 1,107 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-012161 · form4-08112023_070803.xml · nonDerivative · entry 1

King David Lee · CIK 0001620715 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,744

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during June 2023, resulting in a grant of 1,107 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-012167 · form4-08112023_070818.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 276,306

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during June 2023, resulting in a grant of 1,107 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: 0001415889-23-012160 · form4-08112023_070801.xml · nonDerivative · entry 1

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,852

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during June 2023, resulting in a grant of 1,107 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-012163 · form4-08112023_070807.xml · nonDerivative · entry 1

MASHINSKI CARLA S · CIK 0001286202 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,564

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during June 2023, resulting in a grant of 1,107 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-012164 · form4-08112023_070810.xml · nonDerivative · entry 1

MCCALLISTER TERRY D · CIK 0001216725 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,598

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during June 2023, resulting in a grant of 1,107 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-012166 · form4-08112023_070813.xml · nonDerivative · entry 1

Rodriguez Jose Ramon · CIK 0001859182 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,192

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during June 2023, resulting in a grant of 1,107 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-012165 · form4-08112023_070811.xml · nonDerivative · entry 1

Wagner Patricia K · CIK 0001663507 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,598

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during June 2023, resulting in a grant of 1,107 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-010605 · form4-07032023_070703.xml · derivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,966

Underlying: Common Stock · 8,481 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 June 29, 2023, 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 June 29, 2023, 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 June 29, 2023, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001415889-23-010605 · form4-07032023_070703.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,821

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

SEC source: 0001415889-23-010605 · form4-07032023_070703.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,159

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 June 29, 2023, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001415889-23-010606 · form4-07032023_070705.xml · derivative · entry 4

Perisich John M. · CIK 0001441444 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,865

Underlying: Common Stock · 2,969 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 June 29, 2023, 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 June 29, 2023, 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 June 29, 2023, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001415889-23-010606 · form4-07032023_070705.xml · nonDerivative · entry 2

Perisich John M. · CIK 0001441444 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Indirect · Family Trust

Disclosed balance after: 164,419

F3 · kind: Witholding of common stock to satisfy reporting person's tax obligation upon the settlement of vested restricted stock units.

F2 · 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 at Primoris.

SEC source: 0001415889-23-010606 · form4-07032023_070705.xml · nonDerivative · entry 1

Perisich John M. · CIK 0001441444 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Indirect · Family Trust

Disclosed balance after: 165,446

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 June 29, 2023, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F2 · 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 at Primoris.

SEC source: 0001415889-23-010607 · form4-07032023_070707.xml · derivative · entry 3

STRICKER TRAVIS L · CIK 0001358632 · CHIEF ACCOUNTING OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,097

Underlying: Common Stock · 849 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.

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.

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.

SEC source: 0001415889-23-010607 · form4-07032023_070707.xml · nonDerivative · entry 2

STRICKER TRAVIS L · CIK 0001358632 · CHIEF ACCOUNTING OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,283

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

SEC source: 0001415889-23-010607 · form4-07032023_070707.xml · nonDerivative · entry 1

STRICKER TRAVIS L · CIK 0001358632 · CHIEF ACCOUNTING OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,507

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: 0001415889-23-010604 · form4-07032023_070701.xml · derivative · entry 4

Dodgen Kenneth Morris · CIK 0001707945 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,888

Underlying: Common Stock · 2,969 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 June 29, 2023, 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 June 29, 2023, 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 June 29, 2023, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001415889-23-010604 · form4-07032023_070701.xml · nonDerivative · entry 2

Dodgen Kenneth Morris · CIK 0001707945 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,074

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

SEC source: 0001415889-23-010604 · form4-07032023_070701.xml · nonDerivative · entry 1

Dodgen Kenneth Morris · CIK 0001707945 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,797

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 June 29, 2023, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001415889-23-010201 · form4-06222023_070601.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 275,199

F1 · price: These shares were sold in multiple transactions at prices ranging from $30.15 to $30.22 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 sold at each separate price within the range set forth in this footnote.

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: 0001415889-23-009454 · form4-06082023_070601.xml · nonDerivative · entry 1

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,745

F1 · price: These shares were sold in multiple transactions at prices ranging from $29.96 to $30.00 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0001415889-23-009281 · form4-06052023_070601.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 295,199

F1 · price: These shares were sold in multiple transactions at prices ranging from $27.60 to $27.76 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 sold at each separate price within the range set forth in this footnote.

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: 0001415889-23-007330 · form4-05042023_050506.xml · nonDerivative · entry 1

Ching Michael E. · CIK 0001924790 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,733

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during March 2023, resulting in a grant of 1,283 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-007328 · form4-05042023_050501.xml · nonDerivative · entry 1

King David Lee · CIK 0001620715 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,637

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during March 2023, resulting in a grant of 1,283 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-007329 · form4-05042023_050503.xml · nonDerivative · entry 1

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,245

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during March 2023, resulting in a grant of 1,283 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-007334 · form4-05042023_050517.xml · nonDerivative · entry 1

Schauerman John P. · CIK 0001440820 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 315,199

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during March 2023, resulting in a grant of 1,283 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: 0001415889-23-007331 · form4-05042023_050508.xml · nonDerivative · entry 1

MASHINSKI CARLA S · CIK 0001286202 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,457

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during March 2023, resulting in a grant of 1,283 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-007332 · form4-05042023_050512.xml · nonDerivative · entry 1

MCCALLISTER TERRY D · CIK 0001216725 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,491

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during March 2023, resulting in a grant of 1,283 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-007333 · form4-05042023_050514.xml · nonDerivative · entry 1

Rodriguez Jose Ramon · CIK 0001859182 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,085

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during March 2023, resulting in a grant of 1,283 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-007335 · form4-05042023_050519.xml · nonDerivative · entry 1

Wagner Patricia K · CIK 0001663507 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,491

F1 · price: The non-employee director compensation program adopted by the Board in May 2011 and updated August 2022, provides for the issuance of restricted stock with a value of $32,500. The price per share was based on the average closing price during March 2023, resulting in a grant of 1,283 shares of stock. The shares of stock cannot be sold for a period of twelve months from the date of grant.

SEC source: 0001415889-23-005645 · form4-03302023_060301.xml · nonDerivative · entry 1

Cook Stephen C. · CIK 0001441075 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,962

F1 · price: These shares were sold in multiple transactions at prices ranging from $24.13 to $24.17 per share, inclusive. The holder undertakes to provide the issuer, any security holder of 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: 0001415889-23-004511 · form4-03082023_060301.xml · nonDerivative · entry 1

King David Lee · CIK 0001620715 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,354

F1 · price: These shares were sold in multiple transactions at prices ranging from $27.21 to $27.48 per share, inclusive. The holder undertakes to provide the issuer, any security holder of 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: 0001415889-23-003872 · form4-03022023_100351.xml · derivative · entry 7

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,083

Underlying: Common Stock · 22,728 shares

Expires not disclosed

F4 · 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.

F5 · derivative.exercise_date: The restricted stock units vest 25% on March 1, 2024, 25% on March 1, 2025, and 50% on March 1, 2026.

F5 · derivative.expiration_date: The restricted stock units vest 25% on March 1, 2024, 25% on March 1, 2025, and 50% on March 1, 2026.

SEC source: 0001415889-23-003872 · form4-03022023_100351.xml · derivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 52,355

Underlying: Common Stock · 12,427 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.

F3 · 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 March 1, 2023, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F3 · 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 March 1, 2023, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

F3 · 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 March 1, 2023, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001415889-23-003872 · form4-03022023_100351.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,678

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

SEC source: 0001415889-23-003872 · form4-03022023_100351.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,569

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.

F3 · 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 March 1, 2023, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock.

SEC source: 0001415889-23-003863 · form4-03022023_100316.xml · derivative · entry 7

Perisich John M. · CIK 0001441444 · CHIEF LEGAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,924

Underlying: Common Stock · 8,864 shares

Expires not disclosed

F5 · 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.

F6 · derivative.exercise_date: The restricted stock units vest 25% on March 1, 2024, 25% on March 1, 2025, and 50% on March 1, 2026.

F6 · derivative.expiration_date: The restricted stock units vest 25% on March 1, 2024, 25% on March 1, 2025, and 50% on March 1, 2026.