Fred M. Diaz - 12 May 2026 Form 4 Insider Report for SiteOne Landscape Supply, Inc. (SITE)

Reporting relationship: Director
Issuer ticker: SITE
Reported as of: 12 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 14 May 2026, 19:04:51 UTC
Prior SEC filing: 11 May 2026
Next SEC filing: 29 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Travis Jackson, Attorney-in-fact for Fred M. Diaz

Key filing fact

Fred M. Diaz filed Form 4 for SiteOne Landscape Supply, Inc. (SITE) on 14 May 2026.

Key facts

This page summarizes Fred M. Diaz's Form 4 filing for SiteOne Landscape Supply, Inc. (SITE).
3 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 14 May 2026, 19:04.

Change

Previous filing in this sequence was filed on 11 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001712371 Primary reporting owner

Diaz Fred M

Relationship: Director
Address: MANSELL OVERLOOK, 300 COLONIAL CENTER PARKWAY, SUITE 600, ROSWELL
Signature: /s/ Travis Jackson, Attorney-in-fact for Fred M. Diaz
Signature date: 14 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SITE transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,125
Change %: +10%
Price
Shares after: 12,392
Date: 12 May 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SITE transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -1,125
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 12 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,125
Exercise price
Footnotes: F1, F2

SITE transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +1,186
Change %
Price: $0.000000^*
Shares after: 1,186
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,186
Exercise price
Footnotes: F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

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

Footnote F2

On May 14, 2025, the Reporting Person was granted 1,125 RSUs, vesting and settling upon the earlier of (i) the day preceding the Company's next annual meeting of stockholders and (ii) the first anniversary of May 14, 2025, in each case subject to the Reporting Person's continued service as a non-employee director.

Footnote F3

RSUs convert into common stock on a one-for-one basis.

Footnote F4

The RSUs will vest and settle upon the earlier of (i) the day preceding the Company's next annual meeting of stockholders and (ii) the first anniversary of May 13, 2026, in each case subject to the Reporting Person's continued service as a non-employee director.

SEC remarks

Exhibit 24 - Power of Attorney