SiteOne (SITE) HR EVP Joseph Ketter details RSU vesting and 278-share sale

Rhea-AI Filing Summary

SiteOne Landscape Supply EVP Joseph Ketter reports routine equity activity involving restricted stock units and common shares. On February 5, 2026, 644 restricted stock units (RSUs) vested and converted into 644 shares of common stock on a one-for-one basis, increasing his directly held common stock to 14,307 shares.

On the same date, Ketter disposed of 278 common shares at $148.03 per share, leaving him with 14,029 common shares held directly. Following these transactions, he directly holds 1,932 RSUs. The filing notes that he had been granted 2,576 RSUs on February 5, 2025, vesting in four equal annual installments beginning February 5, 2026, subject to continued employment.

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)
02/05/2026

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	02/05/2026		M		644	A	(1)	14,307	D
Common Stock	02/05/2026		F		278	D	$148.03	14,029	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)	02/05/2026		M			644	(2)	(2)	Common Stock	644	$0	1,932	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 5, 2025, the Reporting Person was granted 2,576 RSUs, vesting in four equal annual installments beginning on February 5, 2026, subject to the Reporting Person's continued employment.

	/s/ Travis Jackson, Attorney-in-fact for Joseph Ketter	02/09/2026
	** 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 SITE executive Joseph Ketter report on this Form 4?

Joseph Ketter reported the vesting of 644 restricted stock units into 644 SiteOne common shares and the disposition of 278 common shares at $148.03 per share. After these transactions, he directly held 14,029 common shares and 1,932 remaining restricted stock units.

How many SiteOne (SITE) shares does Joseph Ketter own after these transactions?

After the reported transactions, Joseph Ketter directly owns 14,029 SiteOne common shares and 1,932 restricted stock units. The change reflects RSU vesting into common stock and a same-day disposition of 278 common shares at $148.03 per share, as disclosed in the Form 4.

What restricted stock unit (RSU) vesting did SITE disclose for Joseph Ketter?

SiteOne disclosed that 644 restricted stock units vested for Joseph Ketter on February 5, 2026, converting into 644 common shares on a one-for-one basis. These RSUs are part of a 2,576-unit grant awarded on February 5, 2025, vesting in four equal annual installments.

What was the sale price for Joseph Ketter’s disposed SiteOne (SITE) shares?

The Form 4 shows Joseph Ketter disposed of 278 SiteOne common shares at a price of $148.03 per share. This transaction reduced his directly held common stock from 14,307 shares after RSU vesting to 14,029 shares following the disposition on February 5, 2026.

What are the terms of Joseph Ketter’s 2,576 SiteOne RSU grant?

Ketter’s 2,576 restricted stock units were granted on February 5, 2025, and vest in four equal annual installments starting February 5, 2026. Vesting remains subject to his continued employment, and each vested RSU converts into one share of SiteOne common stock.

What is Joseph Ketter’s role at SiteOne (SITE) according to the Form 4?

According to the Form 4, Joseph Ketter serves as Executive Vice President, Human Resources at SiteOne Landscape Supply. The filing identifies him as an officer, not a director or 10% owner, and reports his equity transactions in common stock and restricted stock units.