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

Rhea-AI Filing Summary

SiteOne Landscape Supply executive Joseph Ketter reported routine equity compensation activity. On February 7, 2026, 515 restricted stock units vested and converted into 515 shares of common stock, increasing his directly held common stock to 14,544 shares before tax withholding.

To cover taxes on the vesting, 223 common shares were withheld at a price of $150.01 per share, leaving Ketter with 14,321 common shares held directly after the transactions. He also continues to hold 1,031 restricted stock units, which may convert into additional common shares as they vest under the original February 7, 2024 grant schedule.

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

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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)
02/07/2026

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	02/07/2026		M		515	A	(1)	14,544	D
Common Stock	02/07/2026		F		223	D	$150.01	14,321	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)	02/07/2026		M			515	(2)	(2)	Common Stock	515	$0.00	1,031	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 7, 2024, the Reporting Person was granted 2,062 RSUs, vesting in four equal annual installments beginning on February 7, 2025, subject to the Reporting Person's continued employment.

	/s/ Travis Jackson, Attorney-in-fact for Joseph Ketter	02/10/2026
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What insider transactions did SITE executive Joseph Ketter report on February 7, 2026?

Joseph Ketter reported the vesting of 515 restricted stock units, which converted into 515 shares of SiteOne Landscape Supply common stock. After these transactions and related tax withholding, he directly held 14,321 common shares and 1,031 remaining restricted stock units.

How many SiteOne (SITE) shares did Joseph Ketter sell or have withheld for taxes?

The Form 4 shows 223 SiteOne common shares were disposed of at $150.01 per share under transaction code "F". This represents shares withheld to satisfy tax obligations arising from the vesting of restricted stock units, rather than an open-market discretionary sale.

How many SiteOne (SITE) shares does Joseph Ketter own after the reported Form 4 transactions?

Following the February 7, 2026 transactions, Joseph Ketter directly holds 14,321 shares of SiteOne common stock. He also beneficially owns 1,031 restricted stock units, which can convert into an equal number of common shares as they vest under the award terms.

What is the background of the restricted stock units in Joseph Ketter’s SITE Form 4?

The footnotes explain that on February 7, 2024, Ketter was granted 2,062 restricted stock units. These RSUs vest in four equal annual installments beginning February 7, 2025, subject to his continued employment, and each RSU converts into one share of SiteOne common stock.

What do the transaction codes M and F mean in the SITE Form 4 for Joseph Ketter?

Code "M" reflects the exercise or conversion of 515 restricted stock units into common shares at $0.00 exercise price. Code "F" reflects the disposition of 223 common shares at $150.01 per share, representing shares withheld to pay taxes due on the RSU vesting event.