SiteOne (NYSE: SITE) EVP logs RSU vesting and tax share withholding

Rhea-AI Filing Summary

SiteOne Landscape Supply EVP of Human Resources Joseph Ketter reported routine equity compensation activity. On February 9, 2026, 334 Restricted Stock Units vested and were converted into an equal number of common shares, as part of a 1,339-RSU grant awarded on February 9, 2023 that vests in four equal annual installments beginning February 9, 2024.

On the same date, 144 common shares were disposed of at $145.65 per share in a tax-withholding transaction related to this vesting. After these transactions, Ketter directly owned 14,511 shares of common stock and 335 RSUs.

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

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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^*

Ketter Joseph

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Human Resources

3. Date of Earliest Transaction (Month/Day/Year)
02/09/2026

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	02/09/2026		M		334	A	(1)	14,655	D
Common Stock	02/09/2026		F		144	D	$145.65	14,511	D

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
Restricted Stock Units	(1)	02/09/2026		M			334	(2)	(2)	Common Stock	334	$0.00	335	D

Explanation of Responses:

1. Filed to report vesting of Restricted Stock Units ("RSUs"). RSUs convert into common stock on a one-for-one basis.

2. On February 9, 2023, the Reporting Person was granted 1,339 RSUs, vesting in four equal annual installments beginning on February 9, 2024, subject to the Reporting Person's continued employment.

	/s/ Travis Jackson, Attorney-in-fact for Joseph Ketter	02/11/2026
	** 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).
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FAQ

What insider transactions did SiteOne (SITE) report for EVP Joseph Ketter?

SiteOne reported equity compensation activity for EVP Joseph Ketter, including RSU vesting and related tax withholding. 334 RSUs vested and converted to common stock, and 144 shares were withheld at $145.65 per share to cover tax obligations, leaving him with 14,511 common shares.

How many SiteOne (SITE) shares does EVP Joseph Ketter own after this Form 4?

After the reported transactions, EVP Joseph Ketter directly owns 14,511 shares of SiteOne common stock. He also holds 335 Restricted Stock Units, which can convert into the same number of shares, reflecting ongoing multi-year equity compensation that vests over time subject to his continued employment.

What RSU vesting did SiteOne (SITE) report for Joseph Ketter on February 9, 2026?

On February 9, 2026, 334 Restricted Stock Units vested for EVP Joseph Ketter and converted into 334 SiteOne common shares. These RSUs are part of a 1,339-unit grant from February 9, 2023 that vests in four equal annual installments beginning February 9, 2024.

Why were 144 SiteOne (SITE) shares disposed of in Joseph Ketter’s Form 4?

The 144 SiteOne shares were disposed of to satisfy tax withholding related to RSU vesting, at a price of $145.65 per share. This is coded as a tax-withholding disposition, meaning it was not an open-market sale but a mechanism to cover tax liabilities.

What does the 2023 RSU grant to SiteOne (SITE) EVP Joseph Ketter look like?

On February 9, 2023, Joseph Ketter was granted 1,339 RSUs that vest in four equal annual installments starting February 9, 2024. Each vested RSU converts on a one-for-one basis into SiteOne common stock, contingent on his continued employment with the company.