SITE / SiteOne Landscape Supply, Inc. - SEC-Einreichungen, Jahresbericht, Proxy Statement

SiteOne Landscape Supply, Inc.
US ˙ NYSE ˙ US82982L1035

Basisstatistiken
LEI 5299008LX7SBD4HIAU03
CIK 1650729
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to SiteOne Landscape Supply, Inc.
SEC Filings (Chronological Order)
Auf dieser Seite finden Sie eine vollständige, chronologische Liste der SEC-Einreichungen, mit Ausnahme der Eigentumseinreichungen, die wir an anderer Stelle bereitstellen.
May 19, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 13, 2026 SiteOne Landscape Su

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 13, 2026 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commis

April 29, 2026 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 April 29, 2026 SiteOne Landscape Supply Announces First Quarter 2026 Earnings First Quarter 2026 Highlights (Compared to First Quarter 2025): · Net sales increased $0.7 million to $940.1 million · Organic Daily Sales decreased 1% · Gross profit increased 3% to $318.8 million; gross margin improved 90 basis points to 33.9% · SG&A as a percentage of Net sales increased 70 basis points t

April 29, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2026 SiteOne Landscape

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2026 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Comm

April 29, 2026 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 29, 2026 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Si

April 27, 2026 EX-10.1

FIRST AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT

Exhibit 10.1 Execution Version FIRST AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT FIRST AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT, dated as of April 22, 2026 (this “Amendment”), among SiteOne Landscape Supply Holding, LLC (formerly known as JDA Holding LLC), a Delaware limited liability company (the “Parent Borrower”), SiteOne Landscape Supply, LLC (formerly known as John Deere Land

April 27, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 22, 2026 SiteOne Landscape

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 22, 2026 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Comm

April 2, 2026 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for use of the Commission only (as permitted by Rule 14A-6(E)(2)) ¨

April 2, 2026 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for use of the Commission only (as permitted by Ru

April 2, 2026 ARS

ARS

UNITEDSTATES SECURITIESANDEXCHANGECOMMISSION WASHINGTON,D.C.20549 FORM10-K ☒ ANNUALREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACTOF1934 ForthefiscalyearendedDecember28,2025 or ☐ TRANSITIONREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACTOF1934 FortheTransitionPeriodFrom to Commissionfilenumber:001-37760 SiteOneLandscapeSupply,Inc. (Exactnameof registrantasspecifiedinitscharter

March 31, 2026 EX-99.1

SITEONE LANDSCAPE SUPPLY ANNOUNCES THE RETIREMENT OF SCOTT SALMON AND THE APPOINTMENT OF DANIEL LAUGHLIN AS SUCCESSOR

Exhibit 99.1 SITEONE LANDSCAPE SUPPLY ANNOUNCES THE RETIREMENT OF SCOTT SALMON AND THE APPOINTMENT OF DANIEL LAUGHLIN AS SUCCESSOR ROSWELL, GA – MARCH 31, 2026 – SiteOne® Landscape Supply, Inc. (the “Company”) (NYSE: SITE) announced today that Scott Salmon will retire from his role as Executive Vice President of Strategy and Development on March 31, 2026. In connection with Mr. Salmon’s retirement

March 31, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 31, 2026 SiteOne Landscape

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 31, 2026 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Comm

February 19, 2026 EX-4.2

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934

Exhibit 4.2 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of December 28, 2025, SiteOne Landscape Supply, Inc. (the “Company,” “us,” “we,” or “our”) had one class of securities, our common stock, par value $0.01 per share, registered under Section 12 of the Securities Exchange Act of 1934, as amended. Our common stock is list

February 19, 2026 EX-21.1

SUBSIDIARIES OF SITEONE LANDSCAPE SUPPLY, INC.

Exhibit 21.1 SUBSIDIARIES OF SITEONE LANDSCAPE SUPPLY, INC. As of the date of this filing, SiteOne Landscape Supply, Inc. has the following subsidiaries: Entity Name Jurisdiction of Formation SiteOne Landscape Supply Midco, Inc. Delaware SiteOne Landscape Supply Bidco, Inc. Delaware SiteOne Landscape Supply Holding, LLC Delaware SiteOne Landscape Supply, LLC Delaware SiteOne Services, LLC Delaware

February 19, 2026 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 28, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne

October 29, 2025 EX-99.1

Press Release dated October 29, 2025

Exhibit 99.1 October 29, 2025 SiteOne Landscape Supply Announces Third Quarter 2025 Earnings Third Quarter 2025 Highlights (Compared to Third Quarter 2024): · Net sales increased 4% to $1,258.2 million · Organic Daily Sales increased 3% · Gross profit increased 6% to $437.2 million; gross margin improved 70 basis points to 34.7% · SG&A as a percentage of Net sales decreased 50 basis points to 28.4

October 29, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 28, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-3776

October 29, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 29, 2025 SiteOne Landscap

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 29, 2025 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Co

August 29, 2025 144

144

144 0001712371 XXXXXXXX LIVE 0001650729 SiteOne Landscape Supply, Inc. 001-37760 MANSELL OVERLOOK 300 COLONIAL CENTER PARKWAY, SUITE 600 ROSWELL GA 30076 (470) 277-7000 Diaz Fred M Director Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 865 125485.55 44612581 08/29/2025 NYSE Common 05/07/2025 Restricted Stock Vesting Issuer N 865 05/07/2025 Compensation Y 08/29/2025 05

August 27, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 25, 2025 SiteOne Landscape

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 25, 2025 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Com

August 27, 2025 EX-99.1

SiteOne Landscape Supply Announces the Planned Retirement of John Guthrie and the Appointment of Eric Elema as Successor Chief Financial Officer

Exhibit 99.1 SiteOne Landscape Supply Announces the Planned Retirement of John Guthrie and the Appointment of Eric Elema as Successor Chief Financial Officer ROSWELL, Ga. – August 27, 2025 — SiteOne® Landscape Supply, Inc. (the “Company”) (NYSE: SITE), announced today that John Guthrie will retire from his role as Executive Vice President and Chief Financial Officer at the end of 2025. In connecti

July 30, 2025 EX-10.1

Summary of Non-Employee Director Compensation, as amended and restated on May 14, 2025.

Exhibit 10.1 Non-Employee Director Compensation Program SITEONE LANDSCAPE SUPPLY, INC. (the “Company”) Effective May 14, 2025 Each non-employee director serving on the Company’s Board of Directors (the “Board”) shall be entitled to receive: 1.Annual Cash Retainer. An annual cash retainer of $90,000 for service on the Board. 2.Committee Membership Fees. A cash retainer, as follows: a.a non-employee

July 30, 2025 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 July 30, 2025 SiteOne Landscape Supply Announces Second Quarter 2025 Earnings Second Quarter 2025 Highlights (Compared to Second Quarter 2024): · Net sales increased 3% to $1,461.6 million · Organic Daily Sales were flat · Gross profit increased 4% to $531.4 million; gross margin improved 30 basis points to 36.4% · SG&A as a percentage of Net sales decreased 40 basis points to 23.9% ·

July 30, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 29, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Sit

July 30, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 30, 2025 SiteOne Landscape S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 30, 2025 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commi

June 25, 2025 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K x ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 or ¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne Savings and Investment Plan (

May 19, 2025 EX-3.1

Fifth Amended and Restated Certificate of Incorporation of SiteOne Landscape Supply, Inc.

Exhibit 3.1 FIFTH AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF SITEONE LANDSCAPE SUPPLY, INC. SITEONE LANDSCAPE SUPPLY, INC., a corporation organized and existing under the laws of the State of Delaware, hereby certifies as follows: 1.              The present name of the corporation is SiteOne Landscape Supply, Inc. (the “Corporation”). 2.              The Corporation was originally forme

May 19, 2025 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 14, 2025 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commis

May 19, 2025 EX-3.2

Fourth Amended and Restated By-laws of SiteOne Landscape Supply, Inc.

Exhibit 3.2 SITEONE LANDSCAPE SUPPLY, INC. FOURTH AMENDED AND RESTATED BY-LAWS Effective as of May 16, 2025 Table of Contents Page Article I - MEETINGS OF STOCKHOLDERS 1 Section 1.01 Annual Meetings 1 Section 1.02 Special Meetings 1 Section 1.03 Participation in Meetings by Remote Communication 1 Section 1.04 Notice of Meetings; Waiver of Notice. 2 Section 1.05 Proxies. 2 Section 1.06 Voting Lists

April 30, 2025 EX-21.1

List of Subsidiaries of SiteOne Landscape Supply, Inc.

Exhibit 21.1 SUBSIDIARIES OF SITEONE LANDSCAPE SUPPLY, INC. As of the date of this filing, SiteOne Landscape Supply, Inc. has the following subsidiaries: Entity Name Jurisdiction of Formation SiteOne Landscape Supply Midco, Inc. Delaware SiteOne Landscape Supply Bidco, Inc. Delaware SiteOne Landscape Supply Holding, LLC Delaware SiteOne Landscape Supply, LLC Delaware SiteOne Services, LLC Delaware

April 30, 2025 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 April 30, 2025 SiteOne Landscape Supply Announces First Quarter 2025 Earnings First Quarter 2025 Highlights (Compared to First Quarter 2024): · Net sales increased 4% to $939.4 million · Organic Daily Sales decreased 1% · Gross profit increased 3% to $309.8 million; gross margin contracted 30 basis points to 33.0% · SG&A as a percentage of Net sales increased 30 basis points to 36.5%;

April 30, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 30, 2025 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Comm

April 30, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Si

April 2, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for use of the Commission only (as permitted by Ru

April 2, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for use of the Commission only (as permitted by Rule 14A-6(E)(2)) ¨

April 2, 2025 ARS

ARS

UNITEDSTATES SECURITIESANDEXCHANGECOMMISSION WASHINGTON,D.C.20549 FORM10-K ☒ ANNUALREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACTOF1934 ForthefiscalyearendedDecember29,2024 or ☐ TRANSITIONREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACTOF1934 FortheTransitionPeriodFrom to Commissionfilenumber:001-37760 SiteOneLandscapeSupply,Inc. (Exactnameof registrantasspecifiedinitscharter

March 28, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 24, 2025 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Comm

March 28, 2025 EX-10.1

10.1* Letter Agreement between Briley Brisendine and the Company, dated March 28, 2025

Exhibit 10.1 March 28, 2025 Briley Brisendine Executive Vice President, General Counsel and Corporate Secretary SiteOne Landscape Supply, Inc. 300 Colonial Center Parkway Suite 600 Roswell, Georgia 30076 Re: Resignation and Transition Services Dear Briley: As we have discussed, the purpose of this Letter Agreement (this “Letter Agreement”) is to set forth our mutual agreement regarding the terms a

March 21, 2025 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for use of the Commission only (as permitted by Ru

February 20, 2025 EX-19.1

SiteOne Landscape Supply, Inc. Insider Trading Policy

EXHIBIT 19.1 SITEONE SECURITIES LAWS POLICY Overview: SiteOne’s Securities Laws Policy summarizes the restrictions on securities transactions and disclosures to members of the investment community. These restrictions are imposed by federal securities laws and the policies of SiteOne and its subsidiaries regarding transactions in publicly- traded securities and public disclosures about or affecting

February 20, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 29, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne

February 20, 2025 EX-4.2

Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934.

Exhibit 4.2 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of December 29, 2024, SiteOne Landscape Supply, Inc. (the “Company,” “us,” “we,” or “our”) had one class of securities, our common stock, par value $0.01 per share, registered under Section 12 of the Securities Exchange Act of 1934, as amended. Our common stock is list

February 20, 2025 EX-21.1

List of Subsidiaries of SiteOne Landscape Supply, Inc.

Exhibit 21.1 SUBSIDIARIES OF SITEONE LANDSCAPE SUPPLY, INC. As of the date of this filing, SiteOne Landscape Supply, Inc. has the following subsidiaries: Entity Name Jurisdiction of Formation SiteOne Landscape Supply Midco, Inc. Delaware SiteOne Landscape Supply Bidco, Inc. Delaware SiteOne Landscape Supply Holding, LLC Delaware SiteOne Landscape Supply, LLC Delaware SiteOne Services, LLC Delaware

February 12, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 12, 2025 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (C

February 12, 2025 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 February 12, 2025 SiteOne Landscape Supply Announces Fourth Quarter and Full Year 2024 Earnings Fourth Quarter 2024 Highlights (Compared to Fourth Quarter 2023): · Net sales increased 5% to $1.01 billion · Organic Daily Sales increased 1% · Gross profit increased 3% to $337.6 million; gross margin decreased 50 basis points to 33.3% · SG&A as a percentage of Net sales increased 150 bas

February 10, 2025 EX-10.1

Form of Performance Stock Unit Award Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive Plan.

Exhibit 10.1 SiteOne Landscape Supply, Inc. ELT Performance Stock Unit Agreement This Performance Stock Unit Agreement (this "Agreement") is made and entered into as of February 5, 2025 (the "Grant Date") by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the "Company") and (the "Participant"). 1.            Grant of Performance Share Units. Effective as of the Grant Date, the

February 10, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 5, 2025 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Co

February 5, 2025 EX-99

EX-99

EX-99 3 ITEM7.txt EXHIBIT 99: ITEM 7 BlackRock Life Limited BlackRock Advisors, LLC Aperio Group, LLC BlackRock (Netherlands) B.V. BlackRock Institutional Trust Company, National Association BlackRock Asset Management Ireland Limited BlackRock Financial Management, Inc. BlackRock Japan Co., Ltd. BlackRock Asset Management Schweiz AG BlackRock Investment Management, LLC BlackRock Investment Managem

February 5, 2025 EX-24

EX-24

EX-24 2 PowerOfAttorney.txt EXHIBIT 24: POWER OF ATTORNEY POWER OF ATTORNEY The undersigned, BlackRock, Inc., a corporation duly organized under the laws of the State of Delaware, United States (the "Company"), does hereby make, constitute and appoint each of Eric Andruczyk, Richard Cundiff, R. Andrew Dickson, III, Spencer Fleming, Laura Hildner, David Maryles, Christopher Meade, Charles Park, Jam

November 14, 2024 SC 13G/A

SITE / SiteOne Landscape Supply, Inc. / PRICE T ROWE ASSOCIATES INC /MD/ Passive Investment

SC 13G/A 1 site13gasep24.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 8) SITEONE LANDSCAPE SUPPLY INC (Name of Issuer) COMMON STOCK (Title of Class of Securities) 82982L103 (CUSIP NUMBER) September 30, 2024 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate th

November 13, 2024 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 13, 2024 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (C

November 8, 2024 SC 13G/A

SITE / SiteOne Landscape Supply, Inc. / BlackRock, Inc. Passive Investment

SC 13G/A 1 us82982l1035110824.txt us82982l1035110824.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 1) SITEONE LANDSCAPE SUPPLY, INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) September 30, 2024 - (Date of Event Which Requires Filing of this Statement) Check the app

October 30, 2024 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 October 30, 2024 SiteOne Landscape Supply Announces Third Quarter 2024 Earnings Third Quarter 2024 Highlights (Compared to Third Quarter 2023): · Net sales increased 6% to $1.21 billion · Organic Daily Sales decreased 1% · Gross profit increased 6% to $411.0 million; gross margin improved 10 basis points to 34.0% · SG&A as a percentage of Net sales increased 170 basis points to 28.9%

October 30, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 29, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-3776

October 30, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 30, 2024 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Co

October 24, 2024 SC 13G/A

SITE / SiteOne Landscape Supply, Inc. / BlackRock, Inc. Passive Investment

SC 13G/A 1 us82982l1035102424.txt us82982l1035102424.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 1) SITEONE LANDSCAPE SUPPLY, INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) September 30, 2024 - (Date of Event Which Requires Filing of this Statement) Check the app

July 31, 2024 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 July 31, 2024 SiteOne Landscape Supply Announces Second Quarter 2024 Earnings Second Quarter 2024 Highlights (Compared to Second Quarter 2023): · Net sales increased 4% to $1.41 billion · Organic Daily Sales decreased 3% · Gross profit increased 4% to $510.3 million; gross margin contracted 10 basis points to 36.1% · SG&A as a percentage of Net sales increased 60 basis points to 24.3%

July 31, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2024 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commi

July 31, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Sit

July 31, 2024 EX-10.1

Summary of Non-Employee Director Compensation, as amended and restated on May 7, 2024.

Exhibit 10.1 Summary of Non-Employee Director Compensation SITEONE LANDSCAPE SUPPLY, INC. (the “Company”) Effective May 7, 2024 Each non-employee director serving on the Company’s Board of Directors (the “Board”) shall be entitled to receive: 1.Annual Cash Retainer. An annual cash retainer of $85,000 for service on the Board. 2.Committee Membership Fees. A cash retainer, as follows: a.a non-employ

July 2, 2024 EX-10.1

Second Amendment to the Second Amended and Restated Credit Agreement, dated as of July 2, 2024, by and among SiteOne Landscape Supply Holding, LLC, SiteOne Landscape Supply, LLC, the several banks and other financial institutions party thereto, and JPMorgan Chase Bank, N.A., as administrative agent and collateral agent, is incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K of SiteOne Landscape Supply, Inc. filed on July 2, 2024.

Exhibit 10.1 Execution Version SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT, dated as of July 2, 2024 (this “Amendment”), among SiteOne Landscape Supply Holding, LLC, a Delaware limited liability company (the “Parent Borrower” or “Borrower Representative”), SiteOne Landscape Supply, LLC, a Delaware limited liabili

July 2, 2024 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 2, 2024 (July 2, 2024) SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorpo

June 26, 2024 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K x ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne Savings and Investment Plan (

June 4, 2024 EX-99.1

William Blair Growth Stock Conference June 2024

Exhibit 99.1 William Blair Growth Stock Conference June 2024 2 Disclaimer Forward - Looking Statements This presentation contains “forward - looking statements” within the meaning of the Private Securities Litigation Reform Act of 19 95. Forward - looking statements may include, but are not limited to, statements relating to our 2024 Adjusted EBITDA outlook and our share repurchase program. Some o

June 4, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 4, 2024 SiteOne Landscape Su

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 4, 2024 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commis

May 13, 2024 EX-3.1

Fourth Amended and Restated Certificate of Incorporation of SiteOne Landscape Supply, Inc., is incorporated by reference to Exhibit 3.1 to the Current Report on Form 8-K of SiteOne Landscape Supply, Inc. filed on May 13, 2024.

Exhibit 3.1 FOURTH AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF SITEONE LANDSCAPE SUPPLY, INC. SITEONE LANDSCAPE SUPPLY, INC., a corporation organized and existing under the laws of the State of Delaware, hereby certifies as follows: 1.             The present name of the corporation is SiteOne Landscape Supply, Inc. (the “Corporation”). 2.             The Corporation was originally formed

May 13, 2024 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2024 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commiss

May 1, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 1, 2024 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commiss

May 1, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Si

May 1, 2024 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 May 1, 2024 SiteOne Landscape Supply Announces First Quarter 2024 Earnings First Quarter 2024 Highlights (Compared to First Quarter 2023): · Net sales increased 8% to $904.8 million · Organic Daily Sales increased 1% · Gross profit increased 5% to $301.2 million; gross margin contracted 100 basis points to 33.3% · SG&A as a percentage of Net sales increased 140 basis points to 36.2% ·

March 26, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for use of the Commission only (as permitted by Ru

March 26, 2024 ARS

ARS

UNITEDSTATES SECURITIESANDEXCHANGECOMMISSION WASHINGTON,D.C.20549 FORM10-K ☒ ANNUALREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACTOF1934 ForthefiscalyearendedDecember31,2023 or ☐ TRANSITIONREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACTOF1934 FortheTransitionPeriodFrom to Commissionfilenumber:001-37760 SiteOneLandscapeSupply,Inc. (Exactnameof registrantasspecifiedinitscharter

March 26, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for use of the Commission only (as permitted by Rule 14A-6(E)(2)) ¨

March 14, 2024 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for use of the Commission only (as permitted by Ru

February 22, 2024 EX-10.67

Form of ELT Stock Option Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Incentive Plan.

Exhibit 10.67 SiteOne Landscape Supply, Inc. ELT Stock Option Agreement This Employee Stock Option Agreement (the “Agreement”), by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”), and the Employee whose name is set forth on Exhibit A hereto, is being entered into pursuant to the SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive Plan (the “Plan”) and is

February 22, 2024 EX-10.66

Form of ELT Restricted Stock Unit Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Incentive Plan.

Exhibit 10.66 SiteOne Landscape Supply, Inc. ELT Restricted Stock Unit Agreement This Employee Restricted Stock Unit Agreement (the “Agreement”), by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”), and the Employee whose name is set forth on Exhibit A hereto, is being entered into pursuant to the SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive Plan (

February 22, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne

February 22, 2024 EX-97

Clawback Policy of SiteOne Landscape Supply, Inc., is incorporated by reference to Exhibit 97 to the Form 10-K of SiteOne Landscape Supply, Inc., filed February 22, 2024.

Exhibit 97 SiteOne Landscape Supply, Inc. Clawback Policy Approved by the Board of Directors on August 9, 2023 Effective as of October 2, 2023 1.Purpose. The purpose of this Policy is to describe the circumstances in which Executive Officers will be required to repay or return Erroneously Awarded Compensation to members of the Company Group. This Policy is designed to comply with, and will be inte

February 22, 2024 EX-4.2

Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934.

Exhibit 4.2 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of December 31, 2023, SiteOne Landscape Supply, Inc. (the “Company,” “us,” “we,” or “our”) had one class of securities, our common stock, par value $0.01 per share, registered under Section 12 of the Securities Exchange Act of 1934, as amended. Our common stock is list

February 22, 2024 EX-21.1

List of Subsidiaries of SiteOne Landscape Supply, Inc.

Exhibit 21.1 SUBSIDIARIES OF SITEONE LANDSCAPE SUPPLY, INC. As of the date of this filing, SiteOne Landscape Supply, Inc. has the following subsidiaries: Entity Name Jurisdiction of Formation SiteOne Landscape Supply Midco, Inc. Delaware SiteOne Landscape Supply Bidco, Inc. Delaware SiteOne Landscape Supply Holding, LLC Delaware SiteOne Landscape Supply, LLC Delaware SiteOne Services, LLC Delaware

February 22, 2024 EX-10.64

Form of Separation Benefit Agreement.

Exhibit 10.64 SEPARATION BENEFIT AGREEMENT This Separation Benefit Agreement (this “Agreement”), dated as of [●], 2023, is entered into by and between [●] (the “Executive”) and [SiteOne Landscape Supply, LLC, a Delaware limited liability company][SiteOne Services, LLC, a [Delaware limited liability company] (the “Company”), and SiteOne Landscape Supply, Inc., a Delaware corporation (“Parent”). Cap

February 14, 2024 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (In millions, except share and per share data)

Exhibit 99.1 February 14, 2024 SiteOne Landscape Supply Announces Fourth Quarter and Full Year 2023 Earnings Fourth Quarter 2023 Highlights (Compared to Fourth Quarter 2022): · Net sales increased 8% to $965.0 million · Organic Daily Sales decreased 1% · Gross profit increased 8% to $326.6 million; Gross margin decreased 20 basis points to 33.8% · SG&A as a percentage of Net sales increased 30 bas

February 14, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 14, 2024 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (C

February 14, 2024 SC 13G/A

SITE / SiteOne Landscape Supply, Inc. / PRICE T ROWE ASSOCIATES INC /MD/ Passive Investment

SC 13G/A 1 site13gadec23.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7) SITEONE LANDSCAPE SUPPLY INC (Name of Issuer) COMMON STOCK (Title of Class of Securities) 82982L103 (CUSIP NUMBER) December 31, 2023 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the

February 13, 2024 EX-10.1

Form of Performance Stock Unit Award Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive Plan, is incorporated by reference to Exhibit 10.1 to the Form 8-K of SiteOne Landscape Supply, Inc., filed February 13, 2024.

Exhibit 10.1 SiteOne Landscape Supply, Inc. Form of Performance Stock Unit Agreement This Performance Stock Unit Agreement (this "Agreement") is made and entered into as of , 2024 (the "Grant Date") by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the "Company") and (the "Participant"). 1.            Grant of Performance Share Units. Effective as of the Grant Date, the Compan

February 13, 2024 SC 13G/A

SITE / SiteOne Landscape Supply, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01931-siteonelandscapesupp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 6)* Name of issuer: SiteOne Landscape Supply Inc Title of Class of Securities: Common Stock CUSIP Number: 82982L103 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate b

February 13, 2024 SC 13G/A

SITE / SiteOne Landscape Supply, Inc. / KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC Passive Investment

SC 13G/A 1 fp0086862-47sc13ga.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (AMENDMENT NO. 7)* SITEONE LANDSCAPE SUPPLY, INC. (Name of Issuer) Common Stock (Title of Class of Securities) 82982L103 (CUSIP Number) Dec

February 13, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 7, 2024 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Co

January 25, 2024 SC 13G

SITE / SiteOne Landscape Supply, Inc. / BlackRock Inc. Passive Investment

SC 13G 1 us82982l1035012524.txt us82982l1035012524.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: ) SITEONE LANDSCAPE SUPPLY, INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropr

November 9, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 8, 2023 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Co

November 1, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended October 1, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 S

November 1, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 1, 2023 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Co

November 1, 2023 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 November 1, 2023 SiteOne Landscape Supply Announces Third Quarter 2023 Earnings Third Quarter 2023 Highlights (Compared to Third Quarter 2022): · Net sales increased 4% to $1.15 billion · Organic Daily Sales decreased 2% · Gross profit of $388.1 million was largely unchanged; gross margin contracted 130 basis points to 33.9% · SG&A as a percentage of Net sales increased 100 basis poin

August 3, 2023 SC 13G/A

SITE / SiteOne Landscape Supply Inc / BAILLIE GIFFORD & CO Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 SiteOne Landscape Supply, Inc (Amendment No.7) - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) 31st July 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sche

August 2, 2023 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 August 2, 2023 SiteOne Landscape Supply Announces Second Quarter 2023 Earnings Second Quarter 2023 Highlights (Compared to Second Quarter 2022): • Net sales increased 11% to $1.35 billion • Organic Daily Sales increased 4% • Gross profit increased 6% to $489.4 million; gross margin contracted 170 basis points to 36.2% • SG&A as a percentage of Net sales increased 130 basis points to 2

August 2, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2023 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Comm

August 2, 2023 EX-10.1

Summary of Non-Employee Director Compensation, as amended and restated on May 11, 2023, is incorporated by reference to Exhibit 10.1 to the Form 10-Q of SiteOne Landscape Supply, Inc., filed August 2, 2023.

Exhibit 10.1 Summary of Non-Employee Director Compensation SITEONE LANDSCAPE SUPPLY, INC. (the “Company”) Effective May 11, 2023 Each non-employee director serving on the Company’s Board of Directors (the “Board”) shall be entitled to receive: 1.Annual Cash Retainer. An annual cash retainer of $80,000 for service on the Board. 2.Committee Membership Fees. A cash retainer, as follows: a.a non-emplo

August 2, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 2, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Site

July 12, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 12, 2023 (July 12, 2023) Sit

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 12, 2023 (July 12, 2023) SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incor

July 12, 2023 EX-10.1

Increase Supplement, dated as of July 12, 2023, by and between SiteOne Landscape Supply Holding, LLC and JPMorgan Chase Bank, N.A., as increasing lender, is incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed July 12, 2023.

Exhibit 10.1 Execution Version INCREASE SUPPLEMENT INCREASE SUPPLEMENT, dated as of July 12, 2023, to the Second Amended and Restated Credit Agreement, dated as of March 23, 2021 (as amended, restated, supplemented, waived or otherwise modified from time to time, the “Credit Agreement”), among SITEONE LANDSCAPE SUPPLY HOLDING, LLC, a Delaware limited liability company (formerly known as JDA Holdin

June 27, 2023 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K x ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 or ¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne Savings and Investment Plan (

May 16, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2023 SiteOne Landscape Su

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2023 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commis

May 3, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 3, 2023 SiteOne Landscape Sup

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 3, 2023 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commiss

May 3, 2023 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 May 3, 2023 SiteOne Landscape Supply Announces First Quarter 2023 Earnings First Quarter 2023 Highlights (Compared to First Quarter 2022): · Net sales increased 4% to $837.4 million · Organic Daily Sales decreased 2% · Gross profit increased 7% to $287.1 million; gross margin expanded 90 basis points to 34.3% · SG&A as a percentage of Net sales increased 620 basis points to 34.8% · Ne

May 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 2, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Sit

March 28, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

DEFA14A 1 tm232079d3defa14a.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for use of the Commission on

March 28, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for use of the Commission only (as permitted by Ru

March 28, 2023 ARS

ARS

UNITEDSTATES SECURITIESANDEXCHANGECOMMISSION WASHINGTON,D.C.20549 FORM10-K ☒ ANNUALREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACTOF1934 ForthefiscalyearendedJanuary1,2023 or ☐ TRANSITIONREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACTOF1934 FortheTransitionPeriodFrom to Commissionfilenumber:001-37760 SiteOneLandscapeSupply,Inc. (Exactnameof registrantasspecifiedinitscharter)

March 27, 2023 EX-10.1

First Amendment to Second Amended and Restated Credit Agreement dated as of March 27, 2023, by and among SiteOne Landscape Supply Holding, LLC and JPMorgan Chase Bank, N.A., as administrative agent, is incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed March 27, 2023.

Exhibit 10.1 Execution Version FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT, dated as of March 27, 2023 (this “Amendment”), among SiteOne Landscape Supply Holding, LLC, a Delaware limited liability company (the “Borrower Representative”) and JPMorgan Chase Bank, N.A., as administrative agent and collateral agent (in

March 27, 2023 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 27, 2023 (March 27, 2023) SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of inc

March 8, 2023 SC 13G/A

SITE / SiteOne Landscape Supply Inc / BlackRock Inc. Passive Investment

us82982l1035030823.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 6) SITEONE LANDSCAPE SUPPLY, INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) February 28, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule

February 23, 2023 EX-10.65

Form of Employee Restricted Stock Unit Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Incentive Plan, is incorporated by reference to Exhibit 10.65 to the Form 10-K of SiteOne Landscape Supply, Inc., filed February 23, 2023.

Exhibit 10.65 SiteOne Landscape Supply, Inc. Employee Restricted Stock Unit Agreement This Employee Restricted Stock Unit Agreement (the “Agreement”), by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”), and the Employee whose name is set forth on Exhibit A hereto, is being entered into pursuant to the SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive P

February 23, 2023 EX-4.2

Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934.

Exhibit 4.2 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of January 1, 2023, SiteOne Landscape Supply, Inc. (the “Company,” “us,” “we,” or “our”) had one class of securities, our common stock, par value $0.01 per share, registered under Section 12 of the Securities Exchange Act of 1934, as amended. Our common stock is listed

February 23, 2023 EX-10.66

Form of Employee Stock Option Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Incentive Plan, is incorporated by reference to Exhibit 10.66 to the Form 10-K of SiteOne Landscape Supply, Inc., filed February 23, 2023.

Exhibit 10.66 SiteOne Landscape Supply, Inc. Employee Stock Option Agreement This Employee Stock Option Agreement (the “Agreement”), by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”), and the Employee whose name is set forth on Exhibit A hereto, is being entered into pursuant to the SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive Plan (the “Plan”) a

February 23, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended January 1, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne L

February 23, 2023 EX-21.1

List of Subsidiaries of SiteOne Landscape Supply, Inc.

Exhibit 21.1 SUBSIDIARIES OF SITEONE LANDSCAPE SUPPLY, INC. As of the date of this filing, SiteOne Landscape Supply, Inc. has the following subsidiaries: Entity Name Jurisdiction of Formation SiteOne Landscape Supply Midco, Inc. Delaware SiteOne Landscape Supply Bidco, Inc. Delaware SiteOne Landscape Supply Holding, LLC Delaware SiteOne Landscape Supply, LLC Delaware SiteOne Services, LLC Delaware

February 15, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 15, 2023 SiteOne Landsca

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 15, 2023 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (C

February 15, 2023 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 February 15, 2023 SiteOne Landscape Supply Announces Fourth Quarter and Full Year 2022 Earnings Fourth Quarter 2022 Highlights (Compared to Fourth Quarter 2021): · Net sales increased 11% to $890.0 million · Organic Daily Sales increased 7% · Gross profit increased 7% to $302.6 million; Gross margin was 34.0% · SG&A as a percentage of Net sales increased 350 basis points to 34.2% · Ne

February 14, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 9, 2023 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Co

February 14, 2023 EX-10.1

Form of Performance Stock Unit Award Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive Plan, is incorporated by reference to Exhibit 10.1 to the Form 8-K of SiteOne Landscape Supply, Inc., filed February 14, 2023.

Exhibit 10.1   SiteOne Landscape Supply, Inc.   Form of Performance Stock Unit Agreement   This Performance Stock Unit Agreement (this "Agreement") is made and entered into as of , 2023 (the "Grant Date") by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the "Company") and (the "Participant").   1.            Grant of Performance Share Units. Effective as of the Grant Date, th

February 14, 2023 SC 13G/A

SITE / SiteOne Landscape Supply Inc / PRICE T ROWE ASSOCIATES INC /MD/ Passive Investment

SC 13G/A 1 site13gadec22.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6) SITEONE LANDSCAPE SUPPLY INC (Name of Issuer) COMMON STOCK (Title of Class of Securities) 82982L103 (CUSIP NUMBER) December 31, 2022 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the

February 10, 2023 SC 13G/A

SITE / SiteOne Landscape Supply Inc / KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC - NONE Passive Investment

SC 13G/A 1 doc1.htm NONE UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5)* SiteOne Landscape Supply, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 82982L103 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate

February 10, 2023 SC 13G/A

SITE / SiteOne Landscape Supply Inc / KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC - NONE Passive Investment

SC 13G/A 1 doc1.htm NONE UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6)* SiteOne Landscape Supply, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 82982L103 (CUSIP Number) January 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate

February 9, 2023 SC 13G/A

SITE / SiteOne Landscape Supply Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01901-siteonelandscapesupp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 5)* Name of issuer: SiteOne Landscape Supply Inc. Title of Class of Securities: Common Stock CUSIP Number: 82982L103 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate

February 7, 2023 SC 13G/A

SITE / SiteOne Landscape Supply Inc / BlackRock Inc. Passive Investment

SC 13G/A 1 us82982l1035020723.txt us82982l1035020723.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 5) SITEONE LANDSCAPE SUPPLY, INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appr

January 20, 2023 SC 13G/A

SITE / SiteOne Landscape Supply Inc / BAILLIE GIFFORD & CO Passive Investment

SC 13G/A 1 siteonelandscape30122022.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 SiteOne Landscape Supply, Inc (Amendment No.6) - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) 30th December 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to de

November 2, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended October 2, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 S

November 2, 2022 EX-10.1

Summary of Non-Employee Director Compensation, as amended and restated on August 10, 2022, is incorporated by reference to Exhibit 10.1 to the Form 10-Q of SiteOne Landscape Supply, Inc., filed November 3, 2022.

Exhibit 10.1 Summary of Non-Employee Director Compensation SITEONE LANDSCAPE SUPPLY, INC. (the “Company”) Effective August 10, 2022 Each non-employee director serving on the Company’s Board of Directors (the “Board”) shall be entitled to receive: 1.Annual Cash Retainer. An annual cash retainer of $75,000 for service on the Board. 2.Committee Membership Fees. A cash retainer, as follows: a.a non-em

November 2, 2022 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 November 2, 2022 SiteOne Landscape Supply Announces Third Quarter 2022 Earnings Third Quarter 2022 Highlights (Compared to Third Quarter 2021): • Net sales increased 18% to $1.1 billion • Organic Daily Sales increased 12% • Gross profit increased 14% to $388.6 million; Gross margin was 35.2% • SG&A as a percentage of Net sales increased 110 basis points to 26.2% • Net income decreased

November 2, 2022 EX-10.2

Form of Director Restricted Stock Unit Agreement (for Non-Employee Director Service) under the SiteOne Landscape Supply, Inc. 2020 Omnibus Incentive Plan, is incorporated by reference to Exhibit 10.2 to the Form 10-Q of SiteOne Landscape Supply, Inc., filed November 3, 2022.

Exhibit 10.2 SiteOne Landscape Supply, Inc. Form of Director Restricted Stock Unit Agreement (for Non-Employee Director Service) This Director Restricted Stock Unit Agreement (this “Agreement”), dated as of the date set forth on Exhibit A hereto (the “Grant Date”), between SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”), and the Person whose name is set forth on Exhibit A he

November 2, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 2, 2022 SiteOne Landscap

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 2, 2022 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Co

August 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 3, 2022 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Comm

August 3, 2022 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (In millions, except share and per share data)

Exhibit 99.1 August 3, 2022 SiteOne Landscape Supply Announces Second Quarter 2022 Earnings Second Quarter 2022 Highlights (Compared to Second Quarter 2021): · Net sales increased 12% to $1.22 billion · Organic Daily Sales increased 8% · Gross profit increased 19% to $461.1 million; gross margin increased 210 basis points to 37.9% · SG&A as a percentage of Net sales increased 160 basis points to 2

August 3, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 3, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Site

July 25, 2022 EX-10.1

Seventh Amendment to the Credit Agreement, dated as of July 22, 2022, by and among SiteOne Landscape Supply Holding, LLC, SiteOne Landscape Supply, LLC, JPMorgan Chase Bank, N.A., as administrative agent and collateral agent, and the several banks and other financial institutions party thereto, is incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K of SiteOne Landscape Supply, Inc. filed July 25, 2022.

Exhibit 10.1 Execution Version SEVENTH AMENDMENT TO CREDIT AGREEMENT SEVENTH AMENDMENT TO CREDIT AGREEMENT, dated as of July 22, 2022 (this ?Amendment?), among SiteOne Landscape Supply Holding, LLC (formerly known as JDA Holding LLC), a Delaware limited liability company (the ?Parent Borrower?), SiteOne Landscape Supply, LLC (formerly known as John Deere Landscapes LLC), a Delaware limited liabili

July 25, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 25, 2022 (July 22, 2022) SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incor

June 28, 2022 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K x ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne Savings and Investment Plan (

May 13, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2022 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commis

May 4, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 4, 2022 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commiss

May 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 3, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Sit

May 4, 2022 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (In millions, except share and per share data)

Exhibit 99.1 May 4, 2022 SiteOne Landscape Supply Announces First Quarter 2022 Earnings First Quarter 2022 Highlights (Compared to First Quarter 2021): ? Net sales increased by 24% to $805.3 million ? Organic Daily Sales increased by 17% ? Gross profit increased 34% to $269.2 million; gross margin increased 240 basis points to 33.4% ? SG&A as a percentage of Net sales decreased by 100 basis points

April 11, 2022 SC 13G/A

SITE / SiteOne Landscape Supply Inc / PRICE T ROWE ASSOCIATES INC /MD/ Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5) SiteOne Landscape Supply, Inc. (Name of Issuer) COMMON STOCK (Title of Class of Securities) 82982L103 (CUSIP NUMBER) March 31, 2022 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the Rule pursuant to which this S

March 30, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ? SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ?????) ? Filed by the Registrant ? ? Filed by a Party other than the Registrant ? ? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, for use of the Commission only (as permi

March 30, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

DEFA14A 1 tm2210305d2def14a.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for use of the Commission on

February 24, 2022 EX-4.2

Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934.

Exhibit 4.2 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of January 2, 2022, SiteOne Landscape Supply, Inc. (the ?Company,? ?us,? ?we,? or ?our?) had one class of securities, our common stock, par value $0.01 per share, registered under Section 12 of the Securities Exchange Act of 1934, as amended. Our common stock is listed

February 24, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended January 2, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne L

February 24, 2022 EX-21.1

List of Subsidiaries of SiteOne Landscape Supply, Inc.

Exhibit 21.1 SUBSIDIARIES OF SITEONE LANDSCAPE SUPPLY, INC. As of the date of this filing, SiteOne Landscape Supply, Inc. has the following subsidiaries: Entity Name Jurisdiction of Formation SiteOne Landscape Supply Midco, Inc. Delaware SiteOne Landscape Supply Bidco, Inc. Delaware SiteOne Landscape Supply Holding, LLC Delaware SiteOne Landscape Supply, LLC Delaware SiteOne Services, LLC Delaware

February 16, 2022 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (In millions, except share and per share data)

Exhibit 99.1 February 16, 2022 SiteOne Landscape Supply Announces Fourth Quarter and Full Year 2021 Earnings Fourth Quarter 2021 Highlights (Compared to Fourth Quarter 2020): ? Net sales increased by 19% to $805.2 million ? Organic Daily Sales increased by 21% ? Gross profit increased 27% to $282.4 million; gross margin increased 220 basis points to 35.1% ? SG&A as a percentage of Net sales increa

February 16, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 16, 2022 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (C

February 14, 2022 EX-10.1

Form of Performance Stock Unit Award Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive Plan.

Exhibit 10.1 SiteOne Landscape Supply, Inc. Form of Performance Stock Unit Agreement This Performance Stock Unit Agreement (this "Agreement") is made and entered into as of , 202 (the "Grant Date") by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the "Company") and (the "Participant"). 1.????????????? Grant of Performance Share Units. Effective as of the Grant Date, the Compa

February 14, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 10, 2022 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (C

February 14, 2022 SC 13G/A

SITE / SiteOne Landscape Supply Inc / PRICE T ROWE ASSOCIATES INC /MD/ Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4) SiteOne Landscape Supply, Inc. (Name of Issuer) COMMON STOCK (Title of Class of Securities) 82982L103 (CUSIP NUMBER) December 31, 2021 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the Rule pursuant to which thi

February 14, 2022 SC 13G/A

SITE / SiteOne Landscape Supply Inc / KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC - NONE Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4)* SiteOne Landscape Supply, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 82982L103 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whi

February 10, 2022 SC 13G/A

SITE / SiteOne Landscape Supply Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 4)* Name of issuer: SiteOne Landscape Supply Inc. Title of Class of Securities: Common Stock CUSIP Number: 82982L103 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule i

February 3, 2022 SC 13G/A

SITE / SiteOne Landscape Supply Inc / BlackRock Inc. Passive Investment

us82982l1035020322.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 4) SITEONE LANDSCAPE SUPPLY, INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) December 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule

January 26, 2022 SC 13G/A

SITE / SiteOne Landscape Supply Inc / BAILLIE GIFFORD & CO Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 SiteOne Landscape Supply, Inc (Amendment no.5) - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) 31st December 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

November 3, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2021 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Co

November 3, 2021 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 November 3, 2021 SiteOne Landscape Supply Announces Third Quarter 2021 Earnings Third Quarter 2021 Highlights (Compared to Third Quarter 2020): ? Net sales increased 25% to $936.4 million ? Organic Daily Sales increased by 15% ? Gross profit increased 36% to $340.5 million; gross margin increased 310 basis points to 36.4% ? SG&A as a percentage of Net sales increased by 70 basis point

November 3, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended October 3, 2021 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 S

August 4, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 4, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Site

August 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2021 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Comm

August 4, 2021 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 August 4, 2021 SiteOne Landscape Supply Announces Second Quarter 2021 Earnings Second Quarter 2021 Highlights (Compared to Second Quarter 2020): ? Net sales increased 33% to $1.1 billion ? Organic Daily Sales increased by 22% ? Gross profit increased 36% to $388.2 million; gross margin increased 80 basis points to 35.8% ? SG&A as a percentage of Net sales decreased by 60 basis points

August 4, 2021 EX-10.1

Summary of Non-Employee Director Compensation, as amended and restated on May 12, 2021, is incorporated by reference to Exhibit 10.1 to the Form 10-Q of SiteOne Landscape Supply, Inc., filed August 4, 2021.

Exhibit 10.1 Summary of Non-Employee Director Compensation SITEONE LANDSCAPE SUPPLY, INC. (the ?Company?) Each non-employee director serving on the Company?s Board of Directors (the ?Board?) shall be entitled to receive: 1.Annual Cash Retainer. An annual cash retainer of $75,000. The annual cash retainer shall be paid quarterly in arrears on March 31, June 30, September 30, and December 31 for eac

June 28, 2021 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K x ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 or ? TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne Savings and Investment Plan (

May 13, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 12, 2021 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commis

May 5, 2021 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (In millions, except share and per share data)

Exhibit 99.1 May 5, 2021 SiteOne Landscape Supply Announces First Quarter 2021 Earnings First Quarter 2021 Highlights (Compared to First Quarter 2020): ? Net sales increased by 41% to $650.2 million ? Organic Daily Sales increased by 32% ? Gross profit increased 41% to $201.5 million; gross margin decreased 10 basis points to 31.0% ? SG&A as a percentage of Net sales decreased by 670 basis points

May 5, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2021 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commiss

May 5, 2021 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 4, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Sit

April 12, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 03)* SiteOne Landscape Supply, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) (CUSIP Numb

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 03)* SiteOne Landscape Supply, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 82982L103 (CUSIP Number) March 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

March 31, 2021 DEF 14A

- DEF 14A

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ? SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 ? Filed by the Registrant ? ? Filed by a Party other than the Registrant ? ? Check the appropriate box: ? Preliminary Proxy Statement ? ? CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE 14A-6(E)(

March 31, 2021 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE 14A-6(E)(2)) ? Definitive Proxy State

March 30, 2021 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 29, 2021 (March 23, 2021) SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of inc

March 30, 2021 EX-10.1

Fifth Amendment to Amended and Restated Credit Agreement dated as of March 23, 2021, by and among SiteOne Landscape Supply Holding, LLC, SiteOne Landscape Supply, LLC, JPMorgan Chase Bank, N.A., as administrative agent and collateral agent, and the several banks and other financial institutions party thereto, is incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on March 30, 2021.

Exhibit 10.1 Execution Version FIFTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT FIFTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT, dated as of March 23, 2021 (this ?Amendment?), among SiteOne Landscape Supply Holding, LLC (formerly known as JDA Holding LLC), a Delaware limited liability company (the ?Parent Borrower?), SiteOne Landscape Supply, LLC (formerly known as John Deere Land

March 3, 2021 10-K

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended January 3, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne L

March 3, 2021 EX-4.2

Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934.

EXHIBIT 4.2 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of January 3, 2021, SiteOne Landscape Supply, Inc. (the ?Company,? ?us,? ?we,? or ?our?) had one class of securities, our common stock, par value $0.01 per share, registered under Section 12 of the Securities Exchange Act of 1934, as amended. Our common stock is listed

March 3, 2021 EX-21.1

List of Subsidiaries of SiteOne Landscape Supply, Inc.

EXHIBIT 21.1 SUBSIDIARIES OF SITEONE LANDSCAPE SUPPLY, INC. As of the date of this filing, SiteOne Landscape Supply, Inc. has the following subsidiaries: Entity Name Jurisdiction of Formation SiteOne Landscape Supply Midco, Inc. Delaware SiteOne Landscape Supply Bidco, Inc. Delaware SiteOne Landscape Supply Holding, LLC Delaware SiteOne Landscape Supply, LLC Delaware SiteOne Landscape Supply, Ltd.

February 24, 2021 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (In millions, except share and per share data)

Exhibit 99.1 February 24, 2021 SiteOne Landscape Supply Announces Fourth Quarter and Full Year 2020 Earnings Fourth Quarter 2020 Highlights (Compared to Fourth Quarter 2019): ? Net sales increased by 26% to $675.1 million ? Organic Daily Sales increased by 12% ? Gross profit increased 31% to $222.3 million; gross margin increased 110 basis points to 32.9% ? SG&A as a percentage of Net sales decrea

February 24, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 24, 2021 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (C

February 18, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 11, 2021 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (C

February 18, 2021 EX-10.1

Form of Performance Stock Unit Award Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive Plan, is incorporated by reference to Exhibit 10.1 to the Form 8-K of SiteOne Landscape Supply, Inc., filed February 18, 2021.

Exhibit 10.1 SiteOne Landscape Supply, Inc. Form of Performance Stock Unit Agreement This Performance Stock Unit Agreement (this "Agreement") is made and entered into as of , 202 (the "Grant Date") by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the "Company") and (the "Participant"). 1. Grant of Performance Share Units. Effective as of the Grant Date, the Company hereby gra

February 16, 2021 SC 13G/A

SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3) SiteOne Landscape Supply, Inc. (Name of Issuer) COMMON STOCK (Title of Class of Securities) 82982L103 (CUSIP NUMBER) December 31, 2020 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the Rule pursuant to which thi

February 11, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* SiteOne Landscape Supply, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) (CUSIP Numbe

Schedule 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* SiteOne Landscape Supply, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 82982L103 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pu

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 3)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 3)* Name of issuer: SiteOne Landscape Supply Inc. Title of Class of Securities: Common Stock CUSIP Number: 82982L103 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule i

February 1, 2021 SC 13G/A

SC 13G/A

us82982l1035013121.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 3) SITEONE LANDSCAPE SUPPLY, INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) December 31, 2020 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule

January 14, 2021 SC 13G/A

SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 SiteOne Landscape Supply, Inc (Amendment no.4) - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) 31st December 2020 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

October 28, 2020 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (In millions, except share and per share data)

Exhibit 99.1 October 28, 2020 SiteOne Landscape Supply Announces Third Quarter 2020 Earnings Third Quarter 2020 Highlights (Compared to Third Quarter 2019): · Net sales increased by 15% to $751.9 million · Organic Daily Sales increased by 11% · Gross profit increased 16% to $250.1 million; gross margin increased 30 basis points to 33.3% · SG&A as a percentage of Net sales decreased by 90 basis poi

October 28, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 27, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-3776

October 28, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 28, 2020 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Co

August 6, 2020 EX-1.1

Underwriting Agreement, dated August 3, 2020, between SiteOne Landscape Supply, Inc. and BofA Securities, Inc.

Exhibit 1.1 SiteOne Landscape Supply, Inc. 2,150,000 Shares of Common Stock Underwriting Agreement August 3, 2020 BofA Securities, Inc. One Bryant Park New York, New York 10036 Ladies and Gentlemen: SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”) proposes, subject to the terms and conditions stated herein, to sell to you (the “Underwriter”) an aggregate of 2,150,000 shares o

August 6, 2020 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 3, 2020 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Comm

August 5, 2020 424B5

CALCULATION OF REGISTRATION FEE

424B5 1 tm2026097-4424b5.htm 424B5 TABLE OF CONTENTS CALCULATION OF REGISTRATION FEE Amount To be Registered(1) Proposed Maximum Offering Price Per Share(2) Proposed Maximum Aggregate Offering Price Amount of Registration Fee(1) Common Stock, $0.01 par value per share 2,472,500 $ 122.19 $ 302,114,775 $ 39,215 (1) Includes 322,500 shares of common stock that may be purchased by the underwriter upon

August 3, 2020 S-3ASR

- S-3ASR

S-3ASR 1 tm2026097-1s3asr.htm S-3ASR TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on August 3, 2020 Registration No. 333-     UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 5040 46-405

August 3, 2020 424B5

Subject to Completion Preliminary Prospectus Supplement, dated August 3, 2020

424B5 1 tm2026097-3424b5.htm 424B5 TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell nor do they seek an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.  Filed Pursuant to Rule 424(b)(5)  Registrati

July 29, 2020 EX-10.5

Form of Non-Employee Director Deferred Stock Unit Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Incentive Plan, is incorporated by reference to Exhibit 10.5 to the Form 10-Q of SiteOne Landscape Supply, Inc., filed July 29, 2020.

Exhibit 10.5 SiteOne Landscape Supply, Inc. Form of Deferred Share Unit Agreement (for Non-Employee Director Service) This Deferred Share Unit Agreement (this “Agreement”), dated as of the date set forth on Exhibit A hereto (the “Grant Date”), between SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”), and the Person whose name is set forth on Exhibit A hereto (the “Participant

July 29, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 28, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Sit

July 29, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 29, 2020 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commi

July 29, 2020 EX-10.3

Form of Employee Restricted Stock Unit Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Incentive Plan, is incorporated by reference to Exhibit 10.3 to the Form 10-Q of SiteOne Landscape Supply, Inc., filed July 29, 2020.

Exhibit 10.3 SiteOne Landscape Supply, Inc. Employee Restricted Stock Unit Agreement This Employee Restricted Stock Unit Agreement (the “Agreement”), by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”), and the Employee whose name is set forth on Exhibit A hereto, is being entered into pursuant to the SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive Pl

July 29, 2020 EX-10.2

Form of Employee Stock Option Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Incentive Plan, is incorporated by reference to Exhibit 10.2 to the Form 10-Q of SiteOne Landscape Supply, Inc., filed July 29, 2020.

Exhibit 10.2 SiteOne Landscape Supply, Inc. Employee Stock Option Agreement This Employee Stock Option Agreement (the “Agreement”), by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”), and the Employee whose name is set forth on Exhibit A hereto, is being entered into pursuant to the SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive Plan (the “Plan”) an

July 29, 2020 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (In millions, except share and per share data)

Exhibit 99.1 July 29, 2020 SiteOne Landscape Supply Announces Second Quarter 2020 Earnings Second Quarter 2020 Highlights (Compared to Second Quarter 2019): · Net sales increased by 9% to $817.7 million · Organic Daily Sales increased by 3% · Gross profit increased 11% to $286.1 million; gross margin increased 70 basis points to 35.0% · Net income increased 22% to $79.1 million · Adjusted EBITDA i

July 29, 2020 EX-10.4

Form of Employee Restricted Stock Unit Agreement under the SiteOne Landscape Supply, Inc. 2020 Omnibus Incentive Plan.

Exhibit 10.5 SiteOne Landscape Supply, Inc. Form of Deferred Share Unit Agreement (for Non-Employee Director Service) This Deferred Share Unit Agreement (this “Agreement”), dated as of the date set forth on Exhibit A hereto (the “Grant Date”), between SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”), and the Person whose name is set forth on Exhibit A hereto (the “Participant

July 29, 2020 EX-10.6

Summary of Non-Employee Director Compensation, as amended and restated on May 13, 2020, is incorporated by reference to Exhibit 10.6 to the Form 10-Q of SiteOne Landscape Supply, Inc., filed July 29, 2020.

Exhibit 10.6 Summary of Non-Employee Director Compensation SITEONE LANDSCAPE SUPPLY, INC. (the “Company”) Effective May 13, 2020 Each non-employee director serving on the Company’s Board of Directors (the “Board”) shall be entitled to receive: 1.Annual Cash Retainer. An annual cash retainer of $65,000 for service on the Board. 2.Committee Membership Fees. A cash retainer, as follows: a.a non-emplo

July 27, 2020 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 14, 2020 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commi

June 26, 2020 11-K

- FORM 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K x ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 or ¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne Savings and Investment Plan (

June 9, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 9, 2020 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commis

June 9, 2020 EX-99.1

40 th Annual William Blair Growth Stock Conference June 9, 2020 2 Disclaimer Forward - Looking Statements This presentation contains “forward - looking statements” within the meaning of the Federal Private Securities Litigation Reform A ct of 1995. F

Exhibit 99.1 40 th Annual William Blair Growth Stock Conference June 9, 2020 2 Disclaimer Forward - Looking Statements This presentation contains “forward - looking statements” within the meaning of the Federal Private Securities Litigation Reform A ct of 1995. Forward - looking statements may include, but are not limited to, statements relating to our 2020 Adjusted EBITDA outlook. Some of the for

May 20, 2020 S-8 POS

- S-8 POS

As filed with the Securities and Exchange Commission on May 20, 2020 Registration No.

May 20, 2020 S-8

- FORM S-8

As filed with the Securities and Exchange Commission on May 20, 2020 Registration No.

May 15, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 13, 2020 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commis

May 15, 2020 EX-10.1

SiteOne Landscape Supply, Inc. 2020 Omnibus Incentive Plan, is incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K of SiteOne Landscape Supply, Inc., filed May 5, 2020.

Exhibit 10.1 SITEONE LANDSCAPE SUPPLY, INC. 2020 OMNIBUS EQUITY INCENTIVE PLAN ARTICLE I PURPOSES This SiteOne Landscape Supply, Inc. 2020 Omnibus Equity Incentive Plan, as may be amended from time to time (the “Plan”), has the following purposes: (1) To further the growth, development and financial success of SiteOne Landscape Supply, Inc. (the “Company”) and the Subsidiaries (as defined herein),

April 29, 2020 EX-10.2

Form of Employee Restricted Stock Unit Agreement under the SiteOne Landscape Supply, Inc. 2016 Omnibus Equity Incentive Plan, , is incorporated by reference to Exhibit 10.2 to the Form 10-Q of SiteOne Landscape Supply, Inc., filed April 29, 2020.

Exhibit 10.2 SiteOne Landscape Supply, Inc. Employee Restricted Stock Unit Agreement This Employee Restricted Stock Unit Agreement (the “Agreement”), by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”), and the Employee whose name is set forth on Exhibit A hereto, is being entered into pursuant to the SiteOne Landscape Supply, Inc. 2016 Omnibus Equity Incentive Pl

April 29, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2020 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Comm

April 29, 2020 EX-10.1

Form of Employee Stock Option Agreement under the SiteOne Landscape Supply, Inc. 2016 Omnibus Equity Incentive Plan, as amended February 2020, is incorporated by reference to Exhibit 10.1 to the Form 10-Q of SiteOne Landscape Supply, Inc., filed April 29, 2020.

Exhibit 10.1 SiteOne Landscape Supply, Inc. Employee Stock Option Agreement This Employee Stock Option Agreement (the “Agreement”), by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the “Company”), and the Employee whose name is set forth on Exhibit A hereto, is being entered into pursuant to the SiteOne Landscape Supply, Inc. 2016 Omnibus Equity Incentive Plan (the “Plan”) an

April 29, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 29, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Si

April 29, 2020 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (In millions, except share and per share data)

Exhibit 99.1 April 29, 2020 SiteOne Landscape Supply Announces First Quarter 2020 Earnings First Quarter 2020 Highlights (Compared to First Quarter 2019): · Net sales increased by 10% to $459.8 million · Organic Daily Sales increased by 5% · Gross profit increased 10% to $142.8 million; gross margin declined 10 basis points to 31.1% · Net loss of $17.5 million, compared to net loss of $24.1 millio

April 29, 2020 EX-10.3

Form of Performance Stock Unit Agreement under the SiteOne Landscape Supply, Inc. 2016 Omnibus Equity Incentive Plan, is incorporated by reference to Exhibit 10.3 to the Form 10-Q of SiteOne Landscape Supply, Inc., filed April 29, 2020.

Exhibit 10.3 SiteOne Landscape Supply, Inc. Form of Performance Stock Unit Agreement This Performance Stock Unit Agreement (this "Agreement") is made and entered into as of (the "Grant Date") by and between SiteOne Landscape Supply, Inc., a Delaware corporation (the "Company") and (the "Participant"). 1.Grant of Performance Share Units. Effective as of the Grant Date, the Company hereby grants to

April 1, 2020 DEF 14A

our Definitive Proxy Statement on Schedule 14A filed with the SEC on April 1, 2020

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE 14A-6(E)(2)) ☒ Defi

April 1, 2020 EX-99.1

1

Exhibit 99.1 April 1, 2020 SiteOne Takes Actions to Increase Financial Flexibility ROSWELL, Ga.-(BUSINESS WIRE)- SiteOne® Landscape Supply, Inc. (NYSE: SITE) announced today actions to increase the Company’s financial flexibility amid the ongoing coronavirus (COVID-19) situation. “We believe that SiteOne has a solid balance sheet and liquidity, and we have no significant debt maturities until 2024

April 1, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 1, 2020 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commi

April 1, 2020 DEFA14A

SITE / SiteOne Landscape Supply, Inc. DEFA14A - - DEFA14A

DEFA14A 1 tm2013313-3defa14a.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY R

February 26, 2020 EX-21.1

List of Subsidiaries of SiteOne Landscape Supply, Inc.

EXHIBIT 21.1 SUBSIDIARIES OF SITEONE LANDSCAPE SUPPLY, INC. As of the date of this filing, SiteOne Landscape Supply, Inc. has the following subsidiaries: Entity Name Jurisdiction of Formation SiteOne Landscape Supply Midco, Inc. Delaware SiteOne Landscape Supply Bidco, Inc. Delaware SiteOne Landscape Supply Holding, LLC Delaware SiteOne Landscape Supply, LLC Delaware SiteOne Landscape Supply, Ltd.

February 26, 2020 10-K

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 29, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne

February 26, 2020 EX-4.2

Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934.

EXHIBIT 4.2 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of December 29, 2019, SiteOne Landscape Supply, Inc. (the “Company,” “us,” “we,” or “our”) had one class of securities, our common stock, par value $0.01 per share, registered under Section 12 of the Securities Exchange Act of 1934, as amended. Our common stock is list

February 18, 2020 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (In millions, except share and per share data)

Exhibit 99.1 February 18, 2020 SiteOne Landscape Supply Announces Fourth Quarter and Full Year 2019 Earnings Fourth Quarter 2019 Highlights (Compared to Fourth Quarter 2018): · Net sales increased by 13% to $535.0 million · Organic Daily Sales increased by 8% · Gross profit increased 14% to $170.0 million; gross margin increased 50 basis points to 31.8% · Net income of $2.5 million compared to net

February 18, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 18, 2020 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (C

February 14, 2020 SC 13G/A

SITE / SiteOne Landscape Supply, Inc. / PRICE T ROWE ASSOCIATES INC /MD/ Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2) SiteOne Landscape Supply, Inc. (Name of Issuer) COMMON STOCK (Title of Class of Securities) 82982L103 (CUSIP NUMBER) December 31, 2019 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the Rule pursuant to which thi

February 14, 2020 SC 13G/A

SITE / SiteOne Landscape Supply, Inc. / KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC - NONE Passive Investment

Schedule 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 01)* SiteOne Landscape Supply, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 82982L103 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule p

February 12, 2020 SC 13G/A

SITE / SiteOne Landscape Supply, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 2)* Name of issuer: SiteOne Landscape Supply Inc Title of Class of Securities: Common Stock CUSIP Number: 82982L103 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is

February 12, 2020 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 5, 2020 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation or o

February 6, 2020 SC 13G/A

SITE / SiteOne Landscape Supply, Inc. / BlackRock Inc. Passive Investment

us82982l1035020520.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 2) SITEONE LANDSCAPE SUPPLY, INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) December 31, 2019 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule

February 4, 2020 SC 13G

SITE / SiteOne Landscape Supply, Inc. / WELLS FARGO & COMPANY/MN Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1) SITEONE LANDSCAPE SUPPLY INC (Name of Issuer) COM (Title of Class of Securities) 82982L103 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sche

January 22, 2020 SC 13G/A

SITE / SiteOne Landscape Supply, Inc. / BAILLIE GIFFORD & CO Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 SiteOne Landscape Supply, Inc (Amendment no.3) - (Name of Issuer) Common Stock - (Title of Class of Securities) 82982L103 - (CUSIP Number) 31st December 2019 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

October 30, 2019 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 October 30, 2019 SiteOne Landscape Supply Announces Third Quarter 2019 Earnings Third Quarter 2019 Highlights (compared to Third Quarter 2018) · Net sales increased by 13% to $652.8 million · Organic Daily Sales increased by 7% · Gross profit increased by 13% to $215.2 million; gross margin of 33.0% was flat year-over-year · SG&A as a percentage of net sales decreased 90 basis points

October 30, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 30, 2019 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Co

October 30, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 29, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-3776

July 31, 2019 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 July 31, 2019 SiteOne Landscape Supply Announces Second Quarter 2019 Earnings Second Quarter 2019 Highlights (compared to Second Quarter 2018) · Net sales increased by 9% to $752.4 million · Organic Daily Sales increased by 1% · Gross profit increased by 12% to $258.0 million; gross margin expanded 90 basis points to 34.3% · Net income increased by 3% to $64.7 million · Adjusted EBITD

July 31, 2019 8-K

Current Report

8-K 1 tv5262398k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2019 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdi

July 31, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 Sit

July 31, 2019 EX-10.1

Summary of Non-Employee Director Compensation, as amended and restated on May 15, 2019, is incorporated by reference to Exhibit 10.1 to the Form 10-Q filed on July 31, 2019.

Exhibit 10.1 Summary of Non-Employee Director Compensation SITEONE LANDSCAPE SUPPLY, INC. (the “Company”) Each non-employee director serving on the Company’s Board of Directors (the “Board”) shall be entitled to receive: 1. Annual Cash Retainer. An annual cash retainer of $65,000. The annual cash retainer shall be paid quarterly in arrears on March 31, June 30, September 30, and December 31 for ea

July 31, 2019 EX-10.4

Separation Benefit Agreement by and between SiteOne Landscape Supply, LLC, SiteOne Landscape Supply, Inc., and Greg Weller, dated May 26, 2019, is incorporated by reference to Exhibit 10.4 to the Form 10-Q filed on July 31, 2019.

Exhibit 10.4 SEPARATION BENEFIT AGREEMENT This Separation Benefit Agreement (this "Agreement"), dated as of May 26, 2016, is entered into by and between Greg Weller (the "Executive") and SiteOne Landscape Supply, LLC, a Delaware limited liability company (the "Company"), and SiteOne Landscape Supply, Inc., a Delaware corporation ("Parent"). Capitalized terms that are used but not otherwise defined

July 31, 2019 EX-10.2

Separation Benefit Agreement by and between SiteOne Landscape Supply, LLC, SiteOne Landscape Supply, Inc., and Scott Salmon, dated April 1, 2019, is incorporated by reference to Exhibit 10.2 to the Form 10-Q, filed on July 31, 2019.

Exhibit 10.2 SEPARATION BENEFIT AGREEMENT This Separation Benefit Agreement (this “Agreement”), dated as of April 1, 2019, is entered into by and between Scott Salmon (the “Executive”) and SiteOne Landscape Supply, LLC, a Delaware limited liability company (the “Company”), and SiteOne Landscape Supply, Inc., a Delaware corporation (“Parent”). Capitalized terms that are used but not otherwise defin

June 26, 2019 11-K

SITE / SiteOne Landscape Supply, Inc. 11-K - - 11-K

11-K 1 tv52424611k.htm 11-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K x ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 or ¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission file number: 001-37760 SiteOne S

June 14, 2019 8-K/A

Current Report

8-K/A 1 tv5235558ka.htm FORM 8-K/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): June 13, 2019 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or ot

June 14, 2019 EX-10.1

Amendment to Separation Agreement, dated June 13, 2019, by and between Ross Anker and SiteOne Landscape Supply, Inc., is incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K/A, filed on June 14, 2019.

Exhibit 10.1 AMENDMENT TO SEPARATION BENEFIT AGREEMENT This Amendment to the Separation Benefit Agreement dated June 13, 2019, (the “Amendment”) amends the Separation Benefit Agreement, dated as of May 27, 2016, entered into by and among Ross Anker ("Executive") and SiteOne Landscape Supply, LLC, a Delaware limited liability company, and SiteOne Landscape Supply, Inc., a Delaware corporation. Unle

May 31, 2019 EX-99.1

Overview – June 2019

Exhibit 99.1 Overview – June 2019 2 Disclaimer Forward - Looking Statements This presentation contains “forward - looking statements” within the meaning of the Federal Private Securities Litigation Reform Act of 1995. Forward - looking statements may include, but are not limited to, statements relating to our 2019 Adjusted EBITDA outlook. Some of the forward - looking statements can be identified

May 31, 2019 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 31, 2019 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorporation) (Commis

May 16, 2019 EX-3.1

Third Amended and Restated Certificate of Incorporation of SiteOne Landscape Supply, Inc., is incorporated by reference to Exhibit 3.1 to the Current Report on Form 8-K of SiteOne Landscape Supply, Inc. filed May 16, 2019.

Exhibit 3.1 THIRD AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF SITEONE LANDSCAPE SUPPLY, INC. SITEONE LANDSCAPE SUPPLY, INC., a corporation organized and existing under the laws of the State of Delaware, hereby certifies as follows: 1. The present name of the corporation is SiteOne Landscape Supply, Inc. (the “Corporation”). 2. The Corporation was originally formed as CD&R Landscapes Paren

May 16, 2019 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

8-K 1 tv5217718k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 15, 2019 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdic

May 16, 2019 EX-3.2

Third Amended and Restated By-Laws of SiteOne Landscape Supply, Inc., is incorporated by reference to Exhibit 3.2 to the Current Report on Form 8-K of SiteOne Landscape Supply, Inc. filed May 16, 2019.

Exhibit 3.2 SITEONE LANDSCAPE SUPPLY, INC. THIRD AMENDED AND RESTATED BY-LAWS Effective as of May 15, 2019 SITEONE LANDSCAPE SUPPLY, INC. BY-LAWS Table of Contents Page ARTICLE I MEETINGS OF STOCKHOLDERS Section 1.01. Annual Meetings 1 Section 1.02. Special Meetings 1 Section 1.03. Participation in Meetings by Remote Communication 1 Section 1.04. Notice of Meetings; Waiver of Notice 1 Section 1.05

May 10, 2019 8-K

Current Report

8-K 1 tv5212838k.htm FORM 8-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 7, 2019 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdiction of incorpo

May 1, 2019 EX-99.1

SiteOne Landscape Supply, Inc. Consolidated Balance Sheets (Unaudited) (In millions, except share and per share data)

Exhibit 99.1 May 1, 2019 SiteOne Landscape Supply Announces First Quarter 2019 Earnings First Quarter 2019 Highlights (compared to First Quarter 2018) · Net sales increased by 12% to $417.3 million · Organic Daily Sales increased by 5% · Gross profit increased 20% to $130.0 million; gross margin expanded 200 basis points to 31.2% · Net loss of $24.1 million, compared to net loss of $17.0 million i

May 1, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 tv5202028k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 1, 2019 SiteOne Landscape Supply, Inc. (Exact name of registrant as specified in its charter) Delaware 001-37760 46-4056061 (State or other jurisdict

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