SITE

EX-99.1

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EXHIBIT 99.1

Exhibit 99.1

October 28, 2026

SiteOne Landscape Supply Announces Third Quarter 2026 Earnings

Third Quarter 2026 Highlights (Compared to Third Quarter 2025):

·Net sales increased 3% to $1,291.1 million

·Organic Daily Sales decreased 1%

·Gross profit increased 5% to $458.5 million; gross margin expanded 80 basis points to 35.5%

·SG&A as a percentage of Net sales increased 20 basis points to 28.6%

·Net income attributable to SiteOne increased 8% to $63.9 million

·Adjusted EBITDA increased 8% to $138.3 million; Adjusted EBITDA margin improved 60 basis points to 10.7%

·Cash provided by operating activities decreased $3.0 million to $125.6 million

·Repurchased $62.2 million of shares under the share repurchase authorization

·Acquired Patterson Nursery Sales

Post Quarter Highlights

·Board of Directors authorized a $500 million increase to the share repurchase program

ROSWELL, Ga. — (BUSINESS WIRE) — SiteOne Landscape Supply, Inc. (the “Company” or “SiteOne”) (NYSE: SITE) announced earnings for its third quarter ended September 27, 2026 (“Third Quarter 2026”).

“We delivered a solid third quarter performance with 8% growth in Adjusted EBITDA and 60 basis points of Adjusted EBITDA margin expansion despite the continued softness in underlying market demand and a delayed fall season due to hot and dry weather in key markets,” said Doug Black, Chairman and CEO of SiteOne. “Our teams made good progress on our commercial and operational initiatives while maintaining disciplined cost control in the face of lower sales volume. We also completed one acquisition during the quarter and have a very active pipeline of potential deals. While we expect market conditions to be challenging in the near term, we remain focused on the opportunities within our control to gain market share, improve productivity, and strengthen our competitive position. These self-help opportunities combined with our acquisition strategy enable us to drive sustained performance and growth for our shareholders this year and in the years to come.”

Third Quarter 2026 Results

Net sales for the Third Quarter 2026 increased 3% to $1,291.1 million, compared to $1,258.2 million for the prior year period. Organic Daily Sales decreased 1% compared to the prior year period, as lower sales volume amid continued softness in underlying market demand and a delay in fall applications due to hot and dry weather conditions more than offset higher price inflation. Acquisitions contributed $39.7 million, or 3%, to Net sales growth during the quarter.

Gross profit increased 5% to $458.5 million for the Third Quarter 2026, compared to $437.2 million for the prior year period. Gross margin improved 80 basis points to 35.5%, driven primarily by strong price realization, including the impact of fuel surcharges, and continued benefits from our commercial initiatives.

Selling, general and administrative expenses (“SG&A”) for the Third Quarter 2026 increased to $368.7 million from $357.4 million for the prior year period. SG&A as a percentage of Net sales increased 20 basis points to 28.6% due primarily to higher fuel and healthcare cost as well as lower sales volume, partially offset by our operational initiatives and continued cost control.

Net income attributable to SiteOne for the Third Quarter 2026 increased 8% to $63.9 million compared to $59.1 million for the prior year period, reflecting gross margin expansion, partially offset by lower sales volume and higher SG&A.

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Adjusted EBITDA for the Third Quarter 2026 increased 8% to $138.3 million, compared to $127.5 million for the prior year period. Adjusted EBITDA margin improved 60 basis points to 10.7%.

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 September 27, 2026, was $522.6 million compared to $422.5 million as of September 28, 2025. Net debt to Adjusted EBITDA for the last twelve months was 1.2 times, compared to 1.0 times for the prior year period.

As of September 27, 2026, Cash and cash equivalents were $88.4 million and available capacity under the ABL Facility was $478.0 million.

Share Repurchase Increased Authorization Announcement

Subsequent to the end of the Third Quarter 2026, SiteOne’s Board of Directors approved a $500.0 million increase to the Company’s existing share repurchase program, authorizing approximately $538.3 million in the aggregate for share repurchases, inclusive of approximately $38.3 million that remained available under the previously approved $400.0 million share repurchase authorization. The updated share repurchase authorization does not have an expiration date, and the timing and amount of any share repurchases will be at the discretion of management and subject to applicable laws.

“Given our strong balance sheet, cash flow generation, and confidence in the long-term value we can create at SiteOne, we beli

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EX-99.1

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EXHIBIT 99.1

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.

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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 commer