[Form 4] SiteOne Landscape Supply, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Doug Black, CEO and Director of SiteOne Landscape Supply, Inc. (SITE), reported a transfer on 08/29/2025 of 93,675 shares of common stock to a spousal lifetime access trust (the "SLAT") for no consideration. The filing shows 496,771 shares reported as beneficially owned following the transaction and discloses that the Reporting Person's spouse is the SLAT trustee while the spouse and descendants are beneficiaries. The Reporting Person disclaims beneficial ownership except to the extent of any pecuniary interest. The Form 4 was signed by an attorney-in-fact on 09/03/2025.

Insights

Securities Analyst

TL;DR: A non-sale transfer of 93,675 SITE shares to a spousal trust was reported; disclosure focuses on ownership and disclaimer of beneficial ownership.

The Form 4 documents a transfer coded as "G" (a gift or similar transfer) of 93,675 shares to a spousal lifetime access trust (SLAT) with no cash consideration. Post-transaction holdings are reported as 496,771 shares. The filing includes the standard disclaimer that the reporting person disclaims beneficial ownership except for pecuniary interest. This is a non-market transaction and does not show any sale proceeds or derivative activity.

Corporate Governance Expert

TL;DR: Insider executed an estate-planning transfer to a SLAT; disclosure and signature are in line with Section 16 reporting requirements.

The disclosure identifies the reporting person as both CEO and Director and specifies the SLAT structure (spouse as trustee; spouse and descendants as beneficiaries). The Form 4 includes the required explanatory footnotes and attorney-in-fact signature. There is no indication of a change in control or any related-party transaction beyond the trust transfer; the filing meets routine Section 16 transparency standards.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

BLACK DOUG

(Last) (First) (Middle)

MANSELL OVERLOOK

300 COLONIAL CENTER PARKWAY, SUITE 600

(Street)

ROSWELL GA 30076

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SiteOne Landscape Supply, Inc. [ SITE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CEO

3. Date of Earliest Transaction (Month/Day/Year)
08/29/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/29/2025		G(1)		93,675	D	$0	496,771	D
Common Stock								93,675	I	By SLAT(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Reflects the transfer of 93,675 shares of common stock for no consideration to a spousal lifetime access trust (the "SLAT"), of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and descendants are beneficiaries.

2. The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.

	/s/ John Guthrie, attorney-in-fact for Doug Black	09/03/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transaction did SITE insider Doug Black report on 08/29/2025?

He reported a transfer of 93,675 shares of SiteOne common stock to a spousal lifetime access trust (SLAT) for $0 (no consideration).

How many SITE shares does Doug Black report owning after the transfer?

The Form 4 reports 496,771 shares beneficially owned following the reported transaction(s).

What is the nature of the SLAT described in the filing?

The SLAT is described as having the Reporting Person's spouse as trustee and the Reporting Person's spouse and descendants as beneficiaries.

Does the filing show any sale proceeds from the transfer?

No. The transfer is reported as occurring for $0, indicating a gift/transfer rather than a sale.

Who signed the Form 4 and when was it signed?

The Form 4 was signed by John Guthrie, attorney-in-fact for Doug Black on 09/03/2025.