SITE files Rule 144: restricted stock vesting noted

SITE submitted a Rule 144 notice reporting restricted stock vesting and recent small transactions.

Rhea-AI Filing Summary

SITE submitted a Rule 144 notice reporting restricted stock vesting and recent small transactions. The filing lists Common shares tied to a Restricted Stock Vesting event dated 05/12/2026 and a reported sale entry dated 05/27/2026. The filing names Fidelity Brokerage Services LLC and an individual, Fred Diaz Jr..

Key Figures

Restricted stock vesting date: 05/12/2026 Reported sale date: 05/27/2026 Table numeric field: 562 +3 more

6 metrics

Restricted stock vesting date 05/12/2026 Listed next to 'Restricted Stock Vesting' entry

Reported sale date 05/27/2026 Row labeled 'Securities Sold During The Past 3 Months'

Table numeric field 562 Numeric column adjacent to Common share entries in the filing table

Table numeric field (value) 63,236.24 Numeric column adjacent to Common share entries in the filing table

Table numeric field (large) 44,308,229 Numeric column adjacent to Common share entries in the filing table

Form processing/cover date 05/28/2026 Date listed near the filing header row

Key Terms

Restricted Stock Vesting, Securities Sold During The Past 3 Months, Fidelity Brokerage Services LLC

3 terms

Restricted Stock Vesting financial

"Restricted Stock Vesting | Issuer | 562 | 05/12/2026"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Securities Sold During The Past 3 Months regulatory

"Securities Sold During The Past 3 Months | Common | 05/27/2026"

Fidelity Brokerage Services LLC other

"Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does SITE's Form 144 report about restricted stock?

The filing shows a Restricted Stock Vesting event dated 05/12/2026. It lists Common shares tied to compensation vesting and records related entries in the Form 144 schedule for the issuer and brokerage.

Who and which broker are named in the SITE Form 144?

The notice names Fred Diaz Jr. as a reporting individual and lists Fidelity Brokerage Services LLC at 900 Salem Street, Smithfield, RI. The filing pairs the individual and the brokerage with the reported share entries and dates.

What transaction dates appear on the SITE Form 144?

The excerpt shows a vesting date of 05/12/2026, a listed filing/processing date of 05/28/2026, and a reported security sale date of 05/27/2026 in the form's transaction rows.

Does the Form 144 show quantities or values for SITE?

The filing rows include numeric fields such as 562, 63,236.24, and 44,308,229 adjacent to the Common share entries. These figures appear in the form table but the excerpt does not label each number with a descriptive field name.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/28/2026 - 09:56 AM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001712371
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	SiteOne Landscape Supply, Inc.
SEC File Number	001-37760
Address of Issuer	MANSELL OVERLOOK 300 COLONIAL CENTER PARKWAY, SUITE 600 ROSWELL GEORGIA 30076
Phone	(470) 277-7000
Name of Person for Whose Account the Securities are To Be Sold	Diaz Fred M
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	562	63236.24	44308229	05/28/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	05/12/2026	Restricted Stock Vesting	Issuer			562	05/12/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Fred Diaz Jr. 300 Colonial Center Parkway Suite 600 Roswell GA 30076	Common	05/27/2026	563	64818.19

144: Remarks and Signature

Remarks
Date of Notice	05/28/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	02/25/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Emily Navaro, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Fred M. Diaz Jr.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)