SiteOne (SITE) Form 144: Insider plans US$4.8M stock sale

Rhea-AI Filing Summary

SiteOne Landscape Supply, Inc. (NYSE: SITE) has filed a Form 144 indicating the proposed sale of insider-held shares under Rule 144 of the Securities Act.

• Securities to be sold: 39,640 common shares.
• Estimated market value: US$4,769,881.20.
• Percent of outstanding: approximately 0.09% of the company’s 44,809,549 shares outstanding.
• Broker: Fidelity Brokerage Services LLC, Smithfield, RI.
• Approximate sale date: 01 July 2025 on the NYSE.
• Acquisition background: Shares stem from an option granted on 27 July 2015; cash will be used to exercise and sell on 01 July 2025.
• No prior sales in last 3 months were reported by this filer.

The filing is a notice; it does not guarantee execution of the sale. The aggregate dollar amount is modest relative to SITE’s market capitalization and float, suggesting limited dilution or price impact. Nevertheless, investors often monitor Form 144 filings for potential sentiment signals from insiders.

Positive

• None.

Negative

• Insider sale indication: A company insider plans to sell US$4.8 million in stock, which some investors may interpret as a mild negative sentiment signal.

Insights

Equity Analyst

TL;DR – 39.6k-share Form 144 equals just 0.09% of float; negligible fundamental impact.

The proposed insider transaction is worth roughly US$4.8 million, miniscule against SiteOne’s multi-billion-dollar market cap. No additional context—such as the seller’s role or motive—is provided. Historically, disposals below 0.5% of shares outstanding rarely shift valuation multiples unless tied to key executives or clustered sales. Because the filer reports no prior sales over the past three months, this appears to be a routine diversification or option-exercise event. I classify it as neutral to the investment thesis.

Corporate Governance Specialist

TL;DR – Routine Rule 144 notice, limited governance red flags detected.

Rule 144 requires affiliates to pre-announce intended open-market sales. The form confirms the signer represents no undisclosed adverse information. With only 39,640 shares, the transaction stays well below volume and filing thresholds, and there is no evidence of 10b5-1 plan abuse. From a governance standpoint, this is standard practice and does not suggest heightened risk. Impact rating: neutral.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	39640	4769881.20	44809549	07/01/2025	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	07/01/2025	Option Granted - 07/27/2015	Issuer			39640	07/01/2025	Cash

* 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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many SITE shares are being sold under this Form 144?

39,640 common shares are listed for potential sale.

What is the estimated value of the SITE stock sale?

Based on the filing, the aggregate market value is US$4,769,881.20.

When is the planned sale date for the SITE shares?

The filer lists an approximate sale date of 01 July 2025.

What percentage of SiteOne’s outstanding shares does this sale represent?

Roughly 0.09% of the 44,809,549 shares outstanding.

Is this Form 144 sale material to SiteOne Landscape Supply investors?

Given its small size relative to float, the filing is considered not materially impactful to fundamentals.