MRTN

SEC source: 0001253979-26-000003 · primary_doc.xml · nonDerivative · entry 1

MARTEN RANDOLPH L · CIK 0001253979 · Director · Chairman of the Board and CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,742,900

F1 · balance_after: Includes: (i) 12,300 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2030; (ii) 10,812 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2029; (iii) 6,108 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2028; (iv) 3,506 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2027; and (v) 2,091 shares granted under a Performance Award Agreement that vest on 12/31/2026.

SEC source: 0001205446-26-000001 · primary_doc.xml · nonDerivative · entry 1

Jones Patricia L · CIK 0001205446 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,100

SEC source: 0001253977-26-000001 · primary_doc.xml · nonDerivative · entry 1

HAGNESS LARRY B · CIK 0001253977 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,575

SEC source: 0001253975-26-000001 · primary_doc.xml · nonDerivative · entry 1

BAUER JERRY M · CIK 0001253975 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 185,044

SEC source: 0001220564-26-000001 · primary_doc.xml · nonDerivative · entry 1

IVERSON KATHLEEN P · CIK 0001220564 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,850

SEC source: 0001653470-26-000001 · primary_doc.xml · nonDerivative · entry 1

Booth Ronald Richard · CIK 0001653470 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,349

SEC source: 0001239192-26-000001 · primary_doc.xml · nonDerivative · entry 1

DEMOREST ROBERT L · CIK 0001239192 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,894

SEC source: 0001348356-26-000002 · primary_doc.xml · nonDerivative · entry 1

Hinnendael James J · CIK 0001348356 · EVP & Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 161,564

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2026.

F2 · balance_after: Includes: (i) 6,766 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2030; (ii) 5,446 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2029; (iii) 3,078 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2028; (iv) 1,765 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2027; and (v) 1,053 shares granted under a Performance Award Agreement that vest on 12/31/2026.

SEC source: 0001253979-26-000002 · primary_doc.xml · nonDerivative · entry 1

MARTEN RANDOLPH L · CIK 0001253979 · Director · Chairman of the Board and CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,744,100

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2026.

F2 · balance_after: Includes: (i) 12,300 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2030; (ii) 10,812 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2029; (iii) 6,108 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2028; (iv) 3,506 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2027; and (v) 2,091 shares granted under a Performance Award Agreement that vest on 12/31/2026.

SEC source: 0002005041-26-000002 · primary_doc.xml · nonDerivative · entry 1

Phillips Adam Daniel · CIK 0002005041 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,284

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2026.

F2 · balance_after: Includes: (i) 4,661 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2030; (ii) 4,098 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2029; (iii) 2,314 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2028; (iv) 600 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2027; and (v) 300 shares granted under a Performance Award Agreement that vest on 12/31/2026.

SEC source: 0001881752-26-000002 · primary_doc.xml · nonDerivative · entry 1

Petit Douglas Paul · CIK 0001881752 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,585

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2026.

F2 · balance_after: Includes: (i) 6,423 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2030; (ii) 5,300 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2029; (iii) 2,994 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2028; (iv) 1,719 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2027; and (v) 1,025 shares granted under a Performance Award Agreement that vest on 12/31/2026.

SEC source: 0001990433-26-000002 · primary_doc.xml · nonDerivative · entry 1

Baier Randall John · CIK 0001990433 · Exec. VP & Chief Tech. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,564

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2026.

F2 · balance_after: Includes: (i) 4,817 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2030; (ii) 3,966 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2029; (iii) 2,239 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2028; (iv) 600 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2027; (v) 300 shares granted under a Performance Award Agreement that vest on 12/31/2026.

SEC source: 0001253979-26-000001 · primary_doc.xml · nonDerivative · entry 1

MARTEN RANDOLPH L · CIK 0001253979 · Director · Chairman of the Board and CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,731,800

F1 · shares: Of the 10,983 shares that vested, this number of shares were withheld in exchange for payment of employee taxes. All vested shares were previously reported as they vested based on service.

F2 · balance_after: Includes: (i) 10,812 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2029; (ii) 6,108 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2028; (iii) 3,506 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2027; and (iv) 2,091 shares granted under a Performance Award Agreement that vest on 12/31/2026.

SEC source: 0001348356-26-000001 · primary_doc.xml · nonDerivative · entry 1

Hinnendael James J · CIK 0001348356 · Exec. VP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 154,798

F1 · shares: Of the 5,531 shares that vested, this number of shares were withheld in exchange for payment of employee taxes. All vested shares were previously reported as they vested based on service.

F2 · balance_after: Includes: (i) 5,446 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2029; (ii) 3,078 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2028; (iii) 1,765 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2027; and (iv) 1,053 shares granted under a Performance Award Agreement that vest on 12/31/2026.

SEC source: 0001881752-26-000001 · primary_doc.xml · nonDerivative · entry 1

Petit Douglas Paul · CIK 0001881752 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,162

F1 · shares: Of the 4,407 shares that vested, this number of shares were withheld in exchange for payment of employee taxes. All vested shares were previously reported as they vested based on service.

F2 · balance_after: Includes: (i) 5,300 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2029; (ii) 2,994 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2028; (iii) 1,719 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2027; and (iv) 1,025 shares granted under a Performance Award Agreement that vest on 12/31/2026.

SEC source: 0002005041-26-000001 · primary_doc.xml · nonDerivative · entry 1

Phillips Adam Daniel · CIK 0002005041 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,623

F1 · shares: Of the 2,596 shares that vested, this number of shares were withheld in exchange for payment of employee taxes. All vested shares were previously reported as they vested based on service.

F2 · balance_after: Includes: (i) 4,098 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2029; (ii) 2,314 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2028; (iii) 600 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2027; and (iv) 300 shares granted under a Performance Award Agreement that vest on 12/31/2026.

SEC source: 0001990433-26-000001 · primary_doc.xml · nonDerivative · entry 1

Baier Randall John · CIK 0001990433 · Exec. VP & Chief Tech. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,747

F1 · shares: Of the 2,538 shares that vested, this number of shares were withheld in exchange for payment of employee taxes. All vested shares were previously reported as they vested based on service.

F2 · balance_after: Includes: (i) 3,966 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2029; (ii) 2,239 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2028; (iii) 600 shares granted under a Performance Award Agreement that vest on 12/31/2026 through 12/31/2027; and (iv) 300 shares granted under a Performance Award Agreement that vest on 12/31/2026.

SEC source: 0001239192-25-000006 · primary_doc.xml · nonDerivative · entry 1

DEMOREST ROBERT L · CIK 0001239192 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,794

SEC source: 0001253979-25-000006 · primary_doc.xml · nonDerivative · entry 1

MARTEN RANDOLPH L · CIK 0001253979 · Director · Executive Chairman of Board · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,736,457

F1 · balance_after: Includes: (i) 13,515 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2029; (ii) 8,144 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (iii) 5,259 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iv) 4,182 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (v) 2,400 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001187222-25-000005 · primary_doc.xml · nonDerivative · entry 1

KOHL TIMOTHY M · CIK 0001187222 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 291,019

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2025.

F2 · balance_after: Includes: (i) 12,408 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2029; (ii) 7,477 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (iii) 4,828 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iv) 3,841 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (v) 2,090 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0002005041-25-000003 · primary_doc.xml · nonDerivative · entry 1

Phillips Adam Daniel · CIK 0002005041 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,754

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2025.

F2 · balance_after: Includes: (i) 5,122 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2029; (ii) 3,086 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (iii) 900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iv) 600 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (v) 200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001881752-25-000003 · primary_doc.xml · nonDerivative · entry 1

Petit Douglas Paul · CIK 0001881752 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,461

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2025.

F2 · balance_after: Includes: (i) 6,625 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2029; (ii) 3,992 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (iii) 2,578 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iv) 2,050 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (v) 200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001253979-25-000005 · primary_doc.xml · nonDerivative · entry 1

MARTEN RANDOLPH L · CIK 0001253979 · Director · Exec. Chairman of the Board · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,737,957

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2025.

F2 · balance_after: Includes: (i) 13,515 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2029; (ii) 8,144 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (iii) 5,259 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iv) 4,182 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (v) 2,400 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001348356-25-000005 · primary_doc.xml · nonDerivative · entry 1

Hinnendael James J · CIK 0001348356 · Exec. VP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,683

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2025.

F2 · balance_after: Includes: (i) 6,807 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2029; (ii) 4,103 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (iii) 2,648 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iv) 2,107 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (v) 1,208 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001990433-25-000003 · primary_doc.xml · nonDerivative · entry 1

Baier Randall John · CIK 0001990433 · Exec. VP & Chief Tech. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,020

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2025.

F2 · balance_after: Includes: (i) 4,957 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2029; (ii) 2,986 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (iii) 900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iv) 600 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (v) 200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001205446-25-000005 · primary_doc.xml · nonDerivative · entry 1

Jones Patricia L · CIK 0001205446 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,000

SEC source: 0001253977-25-000005 · primary_doc.xml · nonDerivative · entry 1

HAGNESS LARRY B · CIK 0001253977 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 206,475

SEC source: 0001220564-25-000005 · primary_doc.xml · nonDerivative · entry 1

IVERSON KATHLEEN P · CIK 0001220564 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,750

SEC source: 0001239192-25-000005 · primary_doc.xml · nonDerivative · entry 1

DEMOREST ROBERT L · CIK 0001239192 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,374

SEC source: 0001653470-25-000003 · primary_doc.xml · nonDerivative · entry 1

Booth Ronald Richard · CIK 0001653470 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,249

SEC source: 0001253975-25-000006 · primary_doc.xml · nonDerivative · entry 1

BAUER JERRY M · CIK 0001253975 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 180,944

SEC source: 0001253975-25-000005 · primary_doc.xml · nonDerivative · entry 1

BAUER JERRY M · CIK 0001253975 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 176,444

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $12.815385 to $12.90, inclusive. The reporting person undertakes to provide to Marten Transport, Ltd., any security holder of Marten Transport, Ltd., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (1) to this Form 4.

SEC source: 0001235802-25-000017 · primary_doc.xml · nonDerivative · entry 1

Phillips Adam Daniel · CIK 0002005041 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,632

F1 · shares: Of the 1,872 shares that vested, this number of shares were withheld in exchange for payment of employee taxes. All vested shares were previously reported as they vested based on service.

F2 · balance_after: Includes: (i) 3,086 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (ii) 900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iii) 600 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (iv) 200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001235802-25-000018 · primary_doc.xml · nonDerivative · entry 1

Baier Randall John · CIK 0001990433 · Exec. VP & Chief Tech. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,063

F1 · shares: Of the 1,847 shares that vested, this number of shares were withheld in exchange for payment of employee taxes. All vested shares were previously reported as they vested based on service.

F2 · balance_after: Includes: (i) 2,986 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (ii) 900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iii) 600 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (iv) 200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001235802-25-000016 · primary_doc.xml · nonDerivative · entry 1

Petit Douglas Paul · CIK 0001881752 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,836

F1 · shares: Of the 3,382 shares that vested, this number of shares were withheld in exchange for payment of employee taxes. All vested shares were previously reported as they vested based on service.

F2 · balance_after: Includes: (i) 3,992 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (ii) 2,578 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iii) 2,050 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (iv) 200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001235802-25-000015 · primary_doc.xml · nonDerivative · entry 1

Hinnendael James J · CIK 0001348356 · Exec. VP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,876

F1 · shares: Of the 4,674 shares that vested, this number of shares were withheld in exchange for payment of employee taxes. All vested shares were previously reported as they vested based on service.

F2 · balance_after: Includes: (i) 4,103 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (ii) 2,648 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iii) 2,107 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (iv) 1,208 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001235802-25-000014 · primary_doc.xml · nonDerivative · entry 1

KOHL TIMOTHY M · CIK 0001187222 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 278,611

F1 · shares: Of the 8,243 shares that vested, this number of shares were withheld in exchange for payment of employee taxes. All vested shares were previously reported as they vested based on service.

F2 · balance_after: Includes: (i) 7,477 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (ii) 4,828 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iii) 3,841 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (iv) 2,090 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001235802-25-000013 · primary_doc.xml · nonDerivative · entry 1

MARTEN RANDOLPH L · CIK 0001253979 · Director · Exec. Chairman of the Board · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,724,442

F1 · shares: Of the 9,344 shares that vested, this number of shares were withheld in exchange for payment of employee taxes. All vested shares were previously reported as they vested based on service.

F2 · balance_after: Includes: (i) 8,144 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (ii) 5,259 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iii) 4,182 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (iv) 2,400 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

SEC source: 0001235802-24-000088 · primary_doc.xml · nonDerivative · entry 1

BAUER JERRY M · CIK 0001253975 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,444

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $15.76 to $15.82, inclusive. The reporting person undertakes to provide to Marten Transport, Ltd., any security holder of Marten Transport, Ltd., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (1) to this Form 4.

SEC source: 0001235802-24-000072 · primary_doc.xml · nonDerivative · entry 1

MARTEN RANDOLPH L · CIK 0001253979 · Director · Exec. Chairman of the Board · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,728,221

F1 · balance_after: Includes: (i) 10,179 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2028; (ii) 7,012 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2027; (iii) 6,274 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2026; (iv) 4,800 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2025; and (v) 1,064 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024.

SEC source: 0001235802-24-000057 · primary_doc.xml · derivative · entry 3

Phillips Adam Daniel · CIK 0002005041 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,500 shares

Expires 2024-08-15

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_date: All shares are vested.

SEC source: 0001235802-24-000057 · primary_doc.xml · nonDerivative · entry 2

Phillips Adam Daniel · CIK 0002005041 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,448

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.3401 to $18.35, inclusive. The reporting person undertakes to provide to Marten Transport, Ltd., any security holder of Marten Transport, Ltd., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

F1 · balance_after: Includes: (i) 3,858 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2028; (ii) 1,200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2027; (iii) 900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2026; (iv) 400 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2025; and (v) 300 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024.

SEC source: 0001235802-24-000057 · primary_doc.xml · nonDerivative · entry 1

Phillips Adam Daniel · CIK 0002005041 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,948

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 · balance_after: Includes: (i) 3,858 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2028; (ii) 1,200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2027; (iii) 900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2026; (iv) 400 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2025; and (v) 300 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024.

SEC source: 0001235802-24-000054 · primary_doc.xml · derivative · entry 3

Petit Douglas Paul · CIK 0001881752 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,500 shares

Expires 2024-08-15

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_date: This option has fully vested.

SEC source: 0001235802-24-000054 · primary_doc.xml · nonDerivative · entry 2

Petit Douglas Paul · CIK 0001881752 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,600

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.22 to $18.2401, inclusive. The reporting person undertakes to provide to Marten Transport, Ltd., any security holder of Marten Transport, Ltd., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

F1 · balance_after: Includes: (i) 4,990 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2028; (ii) 3,437 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2027; (iii) 3,075 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2026; (iv) 400 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2025; and (v) 300 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024.

SEC source: 0001235802-24-000054 · primary_doc.xml · nonDerivative · entry 1

Petit Douglas Paul · CIK 0001881752 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,100

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 · balance_after: Includes: (i) 4,990 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2028; (ii) 3,437 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2027; (iii) 3,075 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2026; (iv) 400 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2025; and (v) 300 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024.

SEC source: 0001235802-24-000043 · primary_doc.xml · nonDerivative · entry 1

Phillips Adam Daniel · CIK 0002005041 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,448

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2024.

F2 · balance_after: Includes: (i) 3,858 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2028; (ii) 1,200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2027; (iii) 900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2026; (iv) 400 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2025; and (v) 300 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024.

SEC source: 0001235802-24-000042 · primary_doc.xml · nonDerivative · entry 1

Petit Douglas Paul · CIK 0001881752 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,600

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2024.

F2 · balance_after: Includes: (i) 4,990 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2028; (ii) 3,437 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2027; (iii) 3,075 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2026; (iv) 400 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2025; and (v) 300 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024.

SEC source: 0001235802-24-000041 · primary_doc.xml · nonDerivative · entry 1

MARTEN RANDOLPH L · CIK 0001253979 · Director · Exec. Chairman of the Board · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,729,221

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2024.

F2 · balance_after: Includes: (i) 10,179 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2028; (ii) 7,012 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2027; (iii) 6,274 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2026; (iv) 4,800 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2025; and (v) 1,064 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024.

SEC source: 0001235802-24-000040 · primary_doc.xml · nonDerivative · entry 1

KOHL TIMOTHY M · CIK 0001187222 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 282,461

F1 · shares: These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2024.

F2 · balance_after: Includes: (i) 9,346 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2028; (ii) 6,437 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2027; (iii) 5,761 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2026; (iv) 4,180 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024 through 12/31/2025; and (v) 755 shares granted under a Performance Unit Award Agreement that vest on 12/31/2024.