SUNB

SEC source: 0001193125-26-088677 · ownership.xml · nonDerivative · entry 1

Lull Brad · CIK 0002106018 · EVP, Strategy & Business Dev

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,706

F1 · price: Includes 45,000 shares of common stock of the Registrant acquired in exchange for ordinary shares of Ashtead Group plc ("Ashtead") beneficially owned by the Reporting Person, upon completion of the scheme of arrangement effected by Ashtead, the Registrant's predecessor, under Part 26 of the UK Companies Act 2006. The exchange ratio was one-to-one and no cash consideration was paid or received.

F2 · price: Includes 8,706 restricted stock units, of which 1,641 will vest on June 20, 2026; 1,808 will vest on July 4, 2026; 1,640 will vest on June 20, 2027; 1,808 will vest on July 4, 2027; and 1,809 will vest on July 4, 2028. Each restricted stock unit represents a contractual right to receive one share of common stock of the Registrant.

SEC source: 0001193125-26-088665 · ownership.xml · derivative · entry 3

Washburn John · CIK 0002106033 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,762

Underlying: Common Stock · 3,762 shares

Expires not disclosed

F4 · derivative.exercise_price: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · price: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · derivative.exercise_date: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · derivative.expiration_date: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

SEC source: 0001193125-26-088665 · ownership.xml · nonDerivative · entry 1

Washburn John · CIK 0002106033 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,239

F1 · price: Includes 32,567 shares of common stock of the Registrant acquired in exchange for ordinary shares of Ashtead Group plc ("Ashtead") beneficially owned by the Reporting Person, upon completion of the scheme of arrangement effected by Ashtead, the Registrant's predecessor, under Part 26 of the UK Companies Act 2006. The exchange ratio was one-to-one and no cash consideration was paid or received.

F2 · price: Includes 9,672 restricted stock units, of which 1,822 will vest on June 20, 2026; 2,009 will vest on July 4, 2026; 1,822 will vest on June 20, 2027; 2,009 will vest on July 4, 2027; and 2,010 will vest on July 4, 2028. Each restricted stock unit represents a contractual right to receive one share of common stock of the Registrant.

SEC source: 0001193125-26-088652 · ownership.xml · nonDerivative · entry 1

Twite Roy · CIK 0002101279 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,550

F1 · price: Represents common stock of the Registrant acquired in exchange for ordinary shares of Ashtead Group plc ("Ashtead") beneficially owned by the Reporting Person, upon completion of the scheme of arrangement effected by Ashtead, the Registrant's predecessor, under Part 26 of the UK Companies Act 2006. The exchange ratio was one-to-one and no cash consideration was paid or received.

SEC source: 0001193125-26-088633 · ownership.xml · derivative · entry 4

Fuller-Andrews Lynne · CIK 0002101505 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,370

Underlying: Common Stock · 3,370 shares

Expires not disclosed

F4 · derivative.exercise_price: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · price: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · derivative.exercise_date: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · derivative.expiration_date: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

SEC source: 0001193125-26-088633 · ownership.xml · nonDerivative · entry 2

Fuller-Andrews Lynne · CIK 0002101505 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,002

F2 · price: Represents restricted stock units, of which 1,632 will vest on June 20, 2026; 1,913 will vest on July 4, 2026; 1,632 will vest on June 20, 2027; 1,913 will vest on July 4, 2027; and 1,912 will vest on July 4, 2028. Each restricted stock unit represents a contractual right to receive one share of common stock of the Registrant.

SEC source: 0001193125-26-088633 · ownership.xml · nonDerivative · entry 1

Fuller-Andrews Lynne · CIK 0002101505 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · price: Represents the initial share of the Registrant, which the Reporting Person beneficially owned as the initial subscriber of the Registrant. Such share was automatically transferred to the Registrant in accordance with the Registrant's Amended and Restated Certificate of Incorporation upon completion of the scheme of arrangement effected by Ashtead Group plc, the Registrant's predecessor, under Part 26 of the UK Companies Act 2006.

SEC source: 0001193125-26-088632 · ownership.xml · nonDerivative · entry 1

Walker Paul Ashton · CIK 0002106282 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,000

F1 · price: Represents common stock of the Registrant acquired in exchange for ordinary shares of Ashtead Group plc ("Ashtead") beneficially owned by the Reporting Person, upon completion of the scheme of arrangement effected by Ashtead, the Registrant's predecessor, under Part 26 of the UK Companies Act 2006. The exchange ratio was one-to-one and no cash consideration was paid or received.

SEC source: 0001193125-26-088631 · ownership.xml · derivative · entry 3

Horgan Kyle · CIK 0002108519 · Executive VP, Specialty

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,115

Underlying: Common Stock · 3,115 shares

Expires not disclosed

F4 · derivative.exercise_price: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · price: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · derivative.exercise_date: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · derivative.expiration_date: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

SEC source: 0001193125-26-088631 · ownership.xml · nonDerivative · entry 1

Horgan Kyle · CIK 0002108519 · Executive VP, Specialty

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,580

F1 · price: Includes 56,254 shares of common stock of the Registrant acquired in exchange for ordinary shares of Ashtead Group plc ("Ashtead") beneficially owned by the Reporting Person, upon completion of the scheme of arrangement effected by Ashtead, the Registrant's predecessor, under Part 26 of the UK Companies Act 2006. The exchange ratio was one-to-one and no cash consideration was paid or received.

F2 · price: Includes 8,326 restricted stock units, of which 1,509 will vest on June 20, 2026; 1,770 will vest on July 4, 2026; 1,508 will vest on June 20, 2027; 1,770 will vest on July 4, 2027; and 1,769 will vest on July 4, 2028. Each restricted stock unit represents a contractual right to receive one share of common stock of the Registrant.

SEC source: 0001193125-26-088629 · ownership.xml · derivative · entry 3

Clark Barbara · CIK 0002101233 · SVP & Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,166

Underlying: Common Stock · 3,166 shares

Expires not disclosed

F4 · derivative.exercise_price: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · price: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · derivative.exercise_date: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

F4 · derivative.expiration_date: Represents deferred stock units which will vest on April 30, 2026. Each deferred stock unit is the economic equivalent of one share of the Registrant's common stock and is settled solely in cash.

SEC source: 0001193125-26-088629 · ownership.xml · nonDerivative · entry 1

Clark Barbara · CIK 0002101233 · SVP & Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,412

F1 · price: Includes 18,001 shares of common stock of the Registrant acquired in exchange for ordinary shares of Ashtead Group plc ("Ashtead") beneficially owned by the Reporting Person, upon completion of the scheme of arrangement effected by Ashtead, the Registrant's predecessor, under Part 26 of the UK Companies Act 2006. The exchange ratio was one-to-one and no cash consideration was paid or received.

F2 · price: Includes 4,411 restricted stock units, of which 721 will vest on June 20, 2026; 990 will vest on July 4, 2026; 722 will vest on June 20, 2027; 989 will vest on July 4, 2027; and 989 will vest on July 4, 2028. Each restricted stock unit represents a contractual right to receive one share of common stock of the Registrant.

SEC source: 0001193125-26-088618 · ownership.xml · nonDerivative · entry 1

Cockburn Angus · CIK 0002101173 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,000

F1 · price: Represents common stock of the Registrant acquired in exchange for ordinary shares of Ashtead Group plc ("Ashtead") beneficially owned by the Reporting Person, upon completion of the scheme of arrangement effected by Ashtead, the Registrant's predecessor, under Part 26 of the UK Companies Act 2006. The exchange ratio was one-to-one and no cash consideration was paid or received.

SEC source: 0001193125-26-303350 · ownership.xml · nonDerivative · entry 1

Fuller-Andrews Lynne · CIK 0002101505 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,822

F1 · price: Includes 7,820 shares of common stock of the Registrant acquired in exchange for ordinary shares of Ashtead Group plc ("Ashtead") beneficially owned by the Reporting Person, upon completion of the scheme of arrangement effected by Ashtead, the Registrant's predecessor, under Part 26 of the UK Companies Act 2006. The exchange ratio was one-to-one and no cash consideration was paid or received.

F2 · price: Includes 9,002 restricted stock units, of which 1,632 will vest on June 20, 2026; 1,913 will vest on July 4, 2026; 1,632 will vest on June 20, 2027; 1,913 will vest on July 4, 2027; and 1,912 will vest on July 4, 2028. Each restricted stock unit represents a contractual right to receive one share of common stock of the Registrant.

F3 · balance_after: This Form 4 amendment is being filed to correct the inadvertent omission in the original report of 7,820 shares of Sunbelt common stock acquired by the Reporting Person in exchange for ordinary shares of Ashtead previously held in a vested share account with registrar and transfer agent. The Reporting Person's total beneficial ownership following the reported transaction in Column 5 of Table I has been adjusted to reflect these additional shares. As of the filing of this amendment, the Reporting Person directly beneficially owns 46,799 shares of common stock.