Brendan Horgan - 27 Feb 2026 Form 4 Insider Report for Sunbelt Rentals Holdings, Inc. (SUNB)

Role: Chief Executive Officer, Director
Signature: /s/ Abbey MacDonald, Attorney-in-Fact
Issuer symbol: SUNB
Transactions as of: 27 Feb 2026
Net transactions value: $0
Form type: 4
Filing time: 03 Mar 2026, 17:05:43 UTC
Previous filing: 26 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Horgan Brendan	Chief Executive Officer, Director	1799 INNOVATION PT, FORT MILL	/s/ Abbey MacDonald, Attorney-in-Fact	03 Mar 2026	0002101226

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SUNB	Common Stock	Award		+469,979			469,979	27 Feb 2026	Direct	F1, F2
transaction	SUNB	Common Stock	Award		+257,422	+55%		727,401	02 Mar 2026	Direct	F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SUNB	Deferred Stock Units	Award		+12,890			12,890	27 Feb 2026	Common Stock	12,890		Direct	F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Includes 419,000 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	Includes 50,979 restricted stock units, of which 9,356 will vest on July 4, 2026; 7,637 will vest on September 19, 2026; 9,356 will vest on July 4, 2027; 7,637 will vest on September 19, 2027; 9,356 will vest on July 4, 2028; and 7,637 will vest on September 19, 2028. Each restricted stock unit represents a contractual right to receive one share of common stock of the Registrant.
F3	Represents performance stock units ("PSUs"), each representing a contractual right to receive one share of common stock of the registrant. The performance conditions of the PSUs were deemed satisfied on March 2, 2026, in connection with the Registrant's initial listing on the New York Stock Exchange and as further discussed in the Registrant's Registration Statement on Form 10/A filed on February 13, 2026. Of such PSUs, 48,946 will vest on June 19, 2026; 96,486 will vest on June 20, 2027; and 111,990 will vest on July 4, 2028.
F4	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.