Form 8-K

8-K — SiteOne Landscape Supply, Inc.

Accession: 0001104659-26-050657

Filed: 2026-04-29

Period: 2026-04-29

CIK: 0001650729

SIC: 5040 (WHOLESALE-PROFESSIONAL & COMMERCIAL EQUIPMENT & SUPPLIES)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — tm2613027d1_8k.htm (Primary)

EX-99.1 — EXHIBIT 99.1 (tm2613027d1_ex99-1.htm)

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8-K — FORM 8-K

8-K (Primary)

Filename: tm2613027d1_8k.htm · Sequence: 1

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0001650729

2026-04-29

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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)

(Commission File Number)

(IRS Employer Identification No.)

300

Colonial Center Parkway, Suite 600

Roswell, Georgia

30076

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code:

(470) 277-7000

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended

to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant

to Section 12(b) of the Act:

Title of

each class

Trading Symbol(s)

Name of each

exchange on which

registered

Common Stock, par value $0.01 per share

SITE

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth

company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange

Act of 1934 (§240.12b-2 of this chapter).

Emerging

growth company ¨

an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying

with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02 Results of Operations and Financial Condition.

On April 29, 2026, SiteOne

Landscape Supply, Inc. issued a press release announcing its results of operations for the first quarter ended March 29, 2026. A copy

of the press release is furnished herewith as Exhibit 99.1.

Item 9.01 Financial Statements and Exhibits.

Exhibit No.

Description

99.1

Press Release dated April 29, 2026

104

Cover

Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements

of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto

duly authorized.

SITEONE LANDSCAPE SUPPLY, INC.

By:

/s/ Travis Jackson

Travis Jackson

General Counsel & Secretary

Date: April 29, 2026

EXHIBIT INDEX TO CURRENT REPORT ON FORM 8-K

Dated April 29, 2026

99.1 Press Release dated April 29, 2026

EX-99.1 — EXHIBIT 99.1

EX-99.1

Filename: tm2613027d1_ex99-1.htm · Sequence: 2

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 to 37.2%;

Base Business SG&A was flat on an adjusted basis

· Net loss attributable to SiteOne of $26.6 million, compared to $27.3 million

for the prior year period

· Adjusted EBITDA1 increased 14% to $25.5 million; Adjusted EBITDA

margin improved 30 basis points to 2.7%

· Cash used in operating activities decreased $7.5 million to $122.1 million

· Closed the acquisitions of Bourget Flagstone and Reinders

· Repurchased $20.0 million of shares under the share repurchase authorization

Post Quarter Highlights

· Amended ABL Facility and extended maturity to April 2031

ROSWELL, Ga. — (BUSINESS WIRE) —

SiteOne Landscape Supply, Inc. (the “Company” or “SiteOne”) (NYSE: SITE) announced earnings for its first

quarter ended March 29, 2026 (“First Quarter 2026”).

“We are pleased with our first quarter

performance as we more than offset the weather and market-related softness in sales volume and delivered Adjusted EBITDA growth with meaningful

gross margin improvement and continued tight SG&A management,” said Doug Black, Chairman and CEO of SiteOne. “Our teams

are executing our commercial and operational initiatives well, which is allowing us to gain market share and expand our Adjusted EBITDA

margin. During the quarter, we were also very pleased to complete the acquisition of Reinders, a strong fifth-generation market leader

in the Midwest, displaying the power of our acquisition strategy. Looking ahead, we remain confident in our ability to navigate the near-term

challenges, deliver superior value to our customers and suppliers, and execute our strategy to drive sustained performance and growth

for shareholders.”

First Quarter 2026 Results

Net sales for the First Quarter 2026 increased $0.7 million to $940.1

million compared to $939.4 million for the prior year period. Organic Daily Sales decreased 1% compared to the prior year period, primarily

due to unfavorable weather conditions across several regions, which resulted in lower volumes. While pricing was positive, lower sales

volume drove the year-over-year decline in Organic Daily Sales. Acquisitions contributed $12.4 million, or 1%, to Net sales growth for

the quarter.

Gross profit increased 3% to $318.8 million for the First Quarter 2026

compared to $309.8 million for the prior year period. Gross margin improved 90 basis points to 33.9%, driven by higher price realization

and continued benefits from commercial initiatives, partially offset by freight and distribution costs as well as deflation in certain

commodity products.

Selling, general and administrative expenses (“SG&A”)

for the First Quarter 2026 increased to $349.9 million from $343.2 million for the prior year period. SG&A as a percentage of Net

sales increased 70 basis points to 37.2% due primarily to the decrease in Organic Daily Sales during the quarter. SG&A in the Base

Business on an adjusted basis was flat for the first quarter compared to the prior year period.

Net loss attributable to SiteOne for the First Quarter 2026 was $26.6

million, compared to $27.3 million for the prior year period, reflecting higher gross margin, partially offset by lower sales volume and

higher SG&A.

Adjusted EBITDA1 for the First Quarter 2026 increased 14%

to $25.5 million, compared to $22.4 million for the prior year period. Adjusted EBITDA margin improved 30 basis points to 2.7%.

Net debt, calculated as long-term debt (net

of issuance costs and discounts) plus finance leases, net of Cash and cash equivalents on our balance sheet as of March 29, 2026,

was $584.5 million compared to $580.4 million as of March 30, 2025. Net debt to Adjusted EBITDA1 for the last twelve months

was 1.4 times compared to 1.5 times for the prior year period.

As of March 29, 2026, Cash and cash equivalents

were $84.0 million and available capacity under the ABL Facility was $418.1 million.

1. Adjusted EBITDA includes contribution from non-controlling interest of $0.7 million for the First Quarter 2026.

Outlook

“We achieved 3% growth in pricing during

the quarter, and we expect overall prices in 2026 to increase 2% to 3% for the full year,” Doug Black continued. “Due to unfavorable

weather, the Spring selling season started later this year than in 2025 and we have seen improved sales volume in April so far. In

terms of end markets, we believe that the recent increase in macroeconomic uncertainty is negatively affecting the already weak new residential

construction and the more resilient repair and upgrade end markets, more than offsetting maintenance growth and solid demand in new commercial

construction. As a result, we believe that overall end market demand will be down modestly for the full year 2026. With the benefit of

our commercial initiatives, we expect sales volume to be flat, yielding low single-digit Organic Daily Sales growth for the full year.

We also expect to expand our Gross margin through increased price realization and strong growth with private label products and small

customers. We expect to achieve SG&A leverage through our operational initiatives, which include focus branch improvements and delivery

cost reduction. Overall, including contributions from acquisitions, we expect to continue expanding our Adjusted EBITDA margin in 2026."

In fiscal year 2026, our results will include

an extra week compared to the prior year period. The extra week occurs in December of our fiscal fourth quarter during a historically

slower sales period and, as a result, is expected to reduce Adjusted EBITDA for the year by approximately $4 million to $5 million.

With all these factors in mind and including

the negative effect of the 53rd week, we continue to expect Adjusted EBITDA for fiscal year 2026 to be in the range of $425

million to $455 million. Our guidance does not include any contributions from unannounced acquisitions.

Reconciliation for the forward-looking full

year 2026 Adjusted EBITDA outlook is not being provided, as the Company does not currently have sufficient data to accurately estimate

the variables and individual adjustments for such reconciliation.

Conference Call Information

SiteOne management will host a conference

call today, April 29, 2026, at 8:00 a.m. Eastern Time, to discuss the Company’s financial results. The conference call

can also be accessed by dialing 877-704-4453 (domestic) or 201-389-0920 (international), or by clicking on this link for instant

telephone access to the call. A telephonic replay will be available approximately two hours after the call by dialing 844-512-2921, or

for international callers, 412-317-6671. The passcode for the replay is 13759555. The replay will be available until 11:59 p.m. (ET)

on May 13, 2026.

Interested investors and other parties can

listen to a webcast of the live conference call by logging onto the Investor Relations section of the Company's website at http://investors.siteone.com.

The online replay will be available for 30 days on the same website immediately following the call. A slide presentation highlighting

the Company’s results and key performance indicators will also be available on the Investor Relations section of the Company’s

website.

To learn more about SiteOne, please visit

the company's website at http://investors.siteone.com.

About SiteOne Landscape Supply, Inc.

SiteOne Landscape Supply, Inc. (NYSE:

SITE), is the largest and only national full product line wholesale distributor of landscape supplies in the United States and has an

established presence in Canada. Its customers are primarily residential and commercial landscape professionals who specialize in the design,

installation and maintenance of lawns, gardens, golf courses and other outdoor spaces.

Investor Relations Contact:

SiteOne Landscape Supply, Inc.

Investor Relations

470-270-7011

investors@siteone.com

Forward-Looking Statements

This release contains “forward-looking statements” within

the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements may include, but are not limited to, statements

relating to our acquisition pipeline, organic and acquisition growth, execution of commercial and operational initiatives, and 2026 Adjusted

EBITDA outlook. Some of the forward-looking statements can be identified by the use of terms such as “may,” “intend,”

“might,” “will,” “should,” “could,” “would,” “expect,” “believe,”

“estimate,” “anticipate,” “predict,” “project,” “potential,” or the negative

of these terms, and similar expressions. You should be aware that these forward-looking statements are subject to risks and uncertainties

that are beyond our control. Further, any forward-looking statement speaks only as of the date on which it is made, and we undertake no

obligation to update any forward-looking statement to reflect events or circumstances after the date on which it is made or to reflect

the occurrence of anticipated or unanticipated events or circumstances. New factors emerge from time to time that may cause our business

not to develop as we expect, and it is not possible for us to predict all of them. Factors that may cause actual results to differ materially

from those expressed or implied by the forward-looking statements include, but are not limited to, the following: cyclicality in residential

and commercial construction markets; general business, economic, and financial market conditions, the level of new home sales and construction

activity, geopolitical conflicts, trade disputes, inflationary pressures, capital markets volatility, and declines in consumer confidence;

severe weather and climate conditions; seasonality of our business and its impact on demand for our products; volatility in the prices

for the products we purchase and the costs required to operate our business; laws and regulations governing our operations; hazardous

materials and related materials; laws and government regulations applicable to our business that could negatively impact demand for our

products; competitive industry pressures; supply chain disruptions (including as a result of geopolitical conflicts, the imposition of

U.S. tariffs or any changes affecting tariffs resulting from the recent U.S. Supreme Court decision), product or labor shortages, and

the loss of key suppliers; inventory management risks; ability to implement our business strategies and achieve our growth objectives;

acquisition and integration risks, including increased competition for acquisitions; risks associated with our large labor force and our

customers’ labor force, as well as labor market disruptions; public perceptions that our products and services are not environmentally

friendly or that our practices are not sustainable; retention of key personnel; construction defect and product liability claims; impairment

of goodwill; inefficient or ineffective allocation of capital; credit sale risks; performance of individual branches; cybersecurity incidents

involving our systems or third-party systems; failure or malfunctions in our information technology systems; security of personal information

about our customers; intellectual property and other proprietary rights; unanticipated changes in our tax provisions, including those

resulting from the passage of the One Big Beautiful Bill Act; risks related to our current indebtedness, including with respect to elevated

interest rates on our variable indebtedness, and our ability to obtain financing in the future; threats from terrorism, violence, uncertain

political conditions, and geopolitical conflicts with Iran as well as the ongoing conflict between Russia and Ukraine and other disruptions

in the Middle East; and other risks, as described in Item 1A, “Risk Factors”, and elsewhere in our Annual Report on Form 10-K

for the fiscal year ended December 28, 2025, as may be updated by subsequent filings under the Securities Exchange Act of 1934, as

amended, including Forms 10-Q and 8-K.

Non-GAAP Financial Information

This release includes certain financial information, not prepared in

accordance with U.S. GAAP. Because not all companies calculate non-GAAP financial information identically (or at all), the presentations

herein may not be comparable to other similarly titled measures used by other companies. Further, these measures should not be considered

substitutes for the information contained in the historical financial information of the Company prepared in accordance with U.S. GAAP

that is set forth herein.

We present Adjusted EBITDA in order to evaluate the operating performance

and efficiency of our business. Adjusted EBITDA represents EBITDA as further adjusted for items permitted under the covenants of our credit

facilities. EBITDA represents Net income (loss) plus the sum of income tax expense (benefit), interest expense, net of interest income,

and depreciation and amortization. Adjusted EBITDA represents EBITDA as further adjusted for stock-based compensation expense, (gain)

loss on sale of assets and termination of finance leases not in the ordinary course of business, financing fees, as well as other fees

and expenses related to acquisitions, and other non-recurring (income) loss. Adjusted EBITDA includes Adjusted EBITDA attributable to

non-controlling interest. Adjusted EBITDA does not include pre-acquisition acquired Adjusted EBITDA. Adjusted EBITDA is not a measure

of our liquidity or financial performance under U.S. GAAP and should not be considered as an alternative to Net income, operating income

or any other performance measures derived in accordance with U.S. GAAP, or as an alternative to cash flow from operating activities as

a measure of our liquidity. The use of Adjusted EBITDA instead of Net income has limitations as an analytical tool. Because not all companies

use identical calculations, our presentation of Adjusted EBITDA may not be comparable to other similarly titled measures of other companies,

limiting its usefulness as a comparative measure. Net debt is defined as long-term debt (net of issuance costs and discounts) plus finance

leases, net of Cash and cash equivalents on our balance sheet. Leverage Ratio is defined as Net debt to trailing twelve months Adjusted

EBITDA. Free Cash Flow is defined as Cash Flow from Operating Activities, less capital expenditures. Base Business is defined as SiteOne

operations excluding acquired branches that have not been under our ownership for at least four full fiscal quarters at the start of the

fiscal year. We define Organic Daily Sales as Organic Sales divided by the number of Selling Days in the relevant reporting period. We

define Organic Sales as Net sales, including Net sales from newly-opened greenfield branches, but excluding Net sales from acquired branches

until they have been under our ownership for at least four full fiscal quarters at the start of the fiscal year. Selling Days are the

number of business days, excluding Saturdays, Sundays, and holidays, that SiteOne branches are open during the relevant reporting period.

SiteOne Landscape Supply, Inc.

Consolidated Balance Sheets (Unaudited)

(In millions, except share and per share data)

Assets

March 29, 2026

December 28, 2025

Current assets:

Cash and cash equivalents

$ 84.0

$ 190.6

Accounts receivable, net of allowance for doubtful accounts of $34.9 and $33.3, respectively

576.8

546.8

Inventory, net

1,107.9

876.5

Income tax receivable

32.9

22.4

Prepaid expenses and other current assets

80.4

62.5

Total current assets

1,882.0

1,698.8

Property and equipment, net

304.3

295.4

Operating lease right-of-use assets, net

443.9

439.7

Goodwill

567.7

530.4

Intangible assets, net

231.8

220.0

Deferred tax assets

9.0

14.7

Other assets

18.8

20.6

Total assets

$ 3,457.5

$ 3,219.6

Liabilities, Redeemable Non-controlling Interest, and Stockholders' Equity

Current liabilities:

Accounts payable

$ 454.0

$ 310.8

Current portion of finance leases

33.6

33.2

Current portion of operating leases

98.4

97.3

Accrued compensation

63.0

104.6

Long-term debt, current portion

3.9

Accrued liabilities

155.7

137.0

Total current liabilities

808.6

686.8

Other long-term liabilities

4.0

Finance leases, less current portion

99.1

101.6

Operating leases, less current portion

365.8

362.5

Long-term debt, less current portion

531.9

381.5

Total liabilities

1,809.4

1,536.4

Commitments and contingencies

Redeemable non-controlling interest

26.5

24.0

Stockholders' equity:

Common stock, par value $0.01; 1,000,000,000 shares authorized; 45,973,827 and 45,895,384 shares issued, and 44,313,345 and 44,390,032 shares outstanding at March 29, 2026 and December 28, 2025, respectively

0.5

Additional paid-in capital

667.9

658.1

Retained earnings

1,165.1

1,191.7

Accumulated other comprehensive loss

(5.7 )

(4.9 )

Treasury stock, at cost, 1,660,482 and 1,505,352 shares at March 29, 2026 and December 28, 2025, respectively

(206.2 )

(186.2 )

Total stockholders' equity

1,621.6

1,659.2

Total liabilities, redeemable non-controlling interest, and stockholders' equity

$ 3,457.5

$ 3,219.6

SiteOne Landscape Supply, Inc.

Consolidated Statements of Operations (Unaudited)

(In millions, except share and per share data)

Three Months Ended

March 29, 2026

March 30, 2025

Net sales

$ 940.1

$ 939.4

Cost of goods sold

621.3

629.6

Gross profit

318.8

309.8

Selling, general and administrative expenses

349.9

343.2

Other income

5.2

3.9

Operating loss

(25.9 )

(29.5 )

Interest and other non-operating expenses, net

8.0

7.4

Loss before taxes

(33.9 )

(36.9 )

Income tax benefit

(9.8 )

(9.4 )

Net loss

(24.1 )

(27.5 )

Less:

Net loss attributable to non-controlling interest

(0.1 )

(0.2 )

Adjustment of non-controlling interest to redemption value

2.6

—

Net loss attributable to SiteOne

$ (26.6 )

$ (27.3 )

Net loss per common share:

Basic

$ (0.60 )

$ (0.61 )

Diluted

$ (0.60 )

$ (0.61 )

Weighted average number of common shares outstanding:

Basic

44,586,582

45,084,610

Diluted

44,586,582

45,084,610

SiteOne Landscape Supply, Inc.

Consolidated Statements of Cash Flows (Unaudited)

(In millions)

Three Months Ended

March 29, 2026

March 30, 2025

Cash Flows from Operating Activities:

Net loss

$ (24.1 )

$ (27.5 )

Adjustments to reconcile Net loss to net cash used in operating activities:

Amortization of finance lease right-of-use assets and depreciation

20.4

19.9

Stock-based compensation

14.2

13.6

Amortization of software and intangible assets

14.7

15.5

Amortization of debt related costs

0.3

Gain on sale of equipment

(1.6 )

(0.2 )

Other

(0.4 )

(2.7 )

Changes in operating assets and liabilities, net of the effects of acquisitions:

Receivables

(15.4 )

(14.3 )

Inventory

(203.7 )

(204.4 )

Income tax receivable

(10.5 )

(9.4 )

Prepaid expenses and other assets

(11.3 )

(17.8 )

Accounts payable

124.0

118.8

Accrued expenses and other liabilities

(28.7 )

(21.4 )

Net Cash Used In Operating Activities

$ (122.1 )

$ (129.6 )

Cash Flows from Investing Activities:

Purchases of property and equipment

(23.0 )

(14.8 )

Purchases of intangible assets

(5.0 )

—

Acquisitions, net of cash acquired

(75.9 )

(7.1 )

Proceeds from the sale of property and equipment

2.3

0.9

Net Cash Used In Investing Activities

$ (101.6 )

$ (21.0 )

Cash Flows from Financing Activities:

Equity proceeds from common stock

0.7

0.8

Repurchases of common shares

(20.0 )

(3.8 )

Repayments under term loan

(1.0 )

Borrowings on asset-based credit facilities

205.2

220.5

Repayments on asset-based credit facilities

(54.1 )

(104.5 )

Payments on finance lease obligations

(8.5 )

(7.7 )

Other financing activities

(5.0 )

(4.3 )

Net Cash Provided By Financing Activities

$ 117.3

$ 100.0

Effect of exchange rate on cash

(0.2 )

0.1

Net change in cash

(106.6 )

(50.5 )

Cash and cash equivalents:

Beginning

190.6

107.1

Ending

$ 84.0

$ 56.6

Supplemental Disclosures of Cash Flow Information:

Cash paid during the year for interest

$ 8.1

$ 5.8

Cash paid during the year for income taxes

$ 1.1

$ —

SiteOne Landscape Supply, Inc.

Adjusted EBITDA to Net Income Reconciliation

(Unaudited)

(In millions)

The following table presents a reconciliation of Adjusted EBITDA to

Net income (loss):

2026

2025

2024

Qtr

Reported Net

income (loss)

$ (24.1 )

$ (7.8 )

$ 60.6

$ 132.1

$ (27.5 )

$ (21.5 )

$ 44.6

$ 120.6

Income tax expense (benefit)

(9.8 )

(5.4 )

15.5

45.0

(9.4 )

(10.1 )

15.8

40.0

Interest expense, net

8.0

8.2

9.1

10.3

7.4

6.7

9.5

9.0

Depreciation

and amortization

35.1

34.7

35.4

35.3

35.4

35.6

35.9

34.6

EBITDA

9.2

29.7

120.6

222.7

5.9

10.7

105.8

204.2

Stock-based

compensation(a)

14.2

5.5

5.6

2.3

13.6

5.5

5.2

3.8

(Gain)

loss on sale of assets(b)

(1.6 )

0.3

0.1

(0.5 )

(0.2 )

1.5

0.3

(0.3 )

Financing

fees(c)

—

0.5

—

Acquisitions

and other adjustments(d)

3.7

2.1

1.2

2.2

3.1

14.1

3.0

2.8

Adjusted

EBITDA(e)

$ 25.5

$ 37.6

$ 127.5

$ 226.7

$ 22.4

$ 31.8

$ 114.8

$ 210.5

(a) Represents stock-based compensation expense recorded during the period.

(b) Represents any gain or loss associated with the sale of assets and termination of finance leases not in

the ordinary course of business.

(d) Represents professional fees and settlement of litigation, performance bonuses, and retention and severance

payments related to historical acquisitions. Also included is the cost of inventory that was stepped up to fair value during the second

quarter of 2024 related to the purchase accounting of Devil Mountain as well as charges during the fourth quarter of 2025 and 2024 for

consolidating or closing certain branch locations. We cannot predict the timing or amount of any such fees or payments. These amounts

are recorded in Cost of goods sold and Selling, general and administrative expenses in the Consolidated Statements of Operations.

(e) Adjusted EBITDA excludes any earnings or loss of acquisitions prior to their respective acquisition dates

for all periods presented. Adjusted EBITDA includes Adjusted EBITDA attributable to non-controlling interest as follows (in millions):

2026

2025

2024

Qtr

Adjusted

EBITDA attributable to non-controlling interest

$ 0.7

$ 1.1

$ 1.0

$ 1.8

$ 0.3

$ 0.8

$ 0.9

SiteOne Landscape Supply, Inc.

Organic Daily Sales to Net Sales Reconciliation

(In millions, except Selling Days; unaudited)

The following table presents a reconciliation

of Organic Daily Sales to Net sales:

2026

2025

Qtr 1

Reported Net sales

$ 940.1

$ 939.4

Organic Sales(a)

927.7

939.4

Acquisition contribution(b)

12.4

—

Selling Days

Organic Daily Sales

$ 14.5

$ 14.7

(a) Organic Sales equal Net sales less Net sales from branches acquired in 2026 and 2025.

(b) Represents Net sales from acquired branches that have not been under our ownership for at least four full

fiscal quarters at the start of the 2026 Fiscal Year. Includes Net sales from branches acquired in 2026 and 2025.

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XML — IDEA: XBRL DOCUMENT

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v3.26.1

Cover

Apr. 29, 2026

Cover [Abstract]

Document Type

8-K

Amendment Flag

false

Document Period End Date

Apr. 29, 2026

Entity File Number

001-37760

Entity Registrant Name

SiteOne Landscape Supply, Inc.

Entity Central Index Key

0001650729

Entity Tax Identification Number

46-4056061

Entity Incorporation, State or Country Code

Entity Address, Address Line One

300

Colonial Center Parkway

Entity Address, Address Line Two

Suite 600

Entity Address, City or Town

Roswell

Entity Address, State or Province

Entity Address, Postal Zip Code

30076

City Area Code

470

Local Phone Number

277-7000

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Title of 12(b) Security

Common Stock, par value $0.01 per share

Trading Symbol

SITE

Security Exchange Name

NYSE

Entity Emerging Growth Company

false

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

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No definition available.

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dei_AmendmentFlag

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- Definition

Area code of city

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No definition available.

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Name:

dei_CityAreaCode

Namespace Prefix:

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Data Type:

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- Definition

Cover page.

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No definition available.

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Data Type:

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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

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Data Type:

xbrli:dateItemType

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Period Type:

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- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

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Data Type:

dei:submissionTypeItemType

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- Definition

Address Line 1 such as Attn, Building Name, Street Name

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No definition available.

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Name:

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Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

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- Definition

Address Line 2 such as Street or Suite number

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No definition available.

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Name:

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Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

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- Definition

Name of the City or Town

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No definition available.

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Name:

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Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

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- Definition

Code for the postal or zip code

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No definition available.

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Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

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- Definition

Name of the state or province.

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No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

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Data Type:

dei:stateOrProvinceItemType

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- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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- Definition

Indicate if registrant meets the emerging growth company criteria.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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Namespace Prefix:

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- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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No definition available.

+ Details

Name:

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Data Type:

dei:fileNumberItemType

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- Definition

Two-character EDGAR code representing the state or country of incorporation.

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No definition available.

+ Details

Name:

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Data Type:

dei:edgarStateCountryItemType

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Period Type:

duration

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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dei_EntityTaxIdentificationNumber

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- Definition

Local phone number for entity.

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No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

Balance Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

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Namespace Prefix:

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Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

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Namespace Prefix:

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Balance Type:

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- Definition

Title of a 12(b) registered security.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

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- Definition

Name of the Exchange on which a security is registered.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

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Name:

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Namespace Prefix:

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Data Type:

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Balance Type:

Period Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

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Namespace Prefix:

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Data Type:

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Balance Type:

Period Type:

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- Definition

Trading symbol of an instrument as listed on an exchange.

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No definition available.

+ Details

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Balance Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

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