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Third Quarter 2026 Earnings NYSE: SITE | October 28, 2026
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2 Disclaimer Forward-Looking Statements This presentation 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 market conditions, our acquisition pipeline, organic and acquisition growth, execution of commercial and operational initiatives, market share and competitive position, share repurchase program, workforce reduction and branch consolidation, pricing, gross margin, SG&A, and 2026 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. tariff policies or any changes affecting tariffs resulting from the 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 rising 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, a s amended, including Forms 10-Q and 8-K. Non-GAAP Financial Information This presentation 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.
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3 Conference call agenda Introduction Eric Elema, CFO Business Update Doug Black, Chairman and CEO Financial Update Eric Elema, CFO Development Update Daniel Laughlin, SVP Strategy & Development Closing & Outlook Doug Black, Chairman and CEO Q&A
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4 Company and industry overview 1. As of year-end 2025. Source: Management estimates; Company data; Kearney Total Addressable Market Assessment, dated May 2026 2. Branch count as of Third Quarter 2026 • Largest and only nationwide (U.S. and Canada) full product line wholesale distributor of landscape supplies • $36 billion highly fragmented market1 • Approximately three times the size of next competitor and only ~13% market share1 • Serving residential and commercial landscape professionals • Complementary value-added services and product support • Approximately 180,000 SKUs1 • Over 690 branches and five distribution centers covering 45 U.S. states and five Canadian provinces2 Balanced by product and end markets (FY25) Maintenance 36% New Construction 34% Repair & Upgrade 30% Landscape Accessories 12% Irrigation 24% Hardscapes 25% Nursery 12% Agronomics 23% Outdoor Lighting 4%
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5 SiteOne is built for continued growth and margin enhancement Current strategy ✓ Leverage strengths of both large and local company ■ Fully exploit our scale, resources and capabilities ■ Execute local market growth strategies ■ Deliver superior value to our customers and suppliers ■ Close and integrate high value-added acquisitions ■ Entrepreneurial local area teams supported by world-class functional support ✓ Drive commercial and operational performance ■ Category management ■ Supply chain ■ Salesforce performance ■ Operational excellence ■ Marketing and Digital Value creation levers 1) Organic growth 2) Margin expansion 3) Acquisition growth
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6 $134 $157 $176 $201 $260 $415 $464 $411 $378 $414 $1,648 $1,862 $2,112 $2,358 $2,705 $3,476 $4,015 $4,301 $4,541 $4,705 Track record of performance and growth Source: Company data 32.0%31.3% 32.1% Net Sales Gross Margin % Adj. EBITDA Adj. EBITDA Margin % Sales $ +185% GM % +350bps ($ in Millions) Net Sales Adjusted EBITDA ’16-’25 Growth 32.8% 33.3% 8.4%8.1% FY 2017 8.3% FY 2018 Adj. EBITDA $ +209% Adj. EBITDA % +70 bps ’16-’25 Growth 8.5% FY 2019 9.6% 34.9% 11.9% FY 2021FY 2016 35.4% FY 2023 11.6% FY 2020 34.4% FY 2022 9.5% FY 2017 FY 2018 FY 2019 FY 2021FY 2016 FY 2023FY 2020 FY 2022 34.7% FY 2024 FY 2024 8.3% ($ in Millions) FY 2025 34.8% FY 2025 8.8% 2016-2021 2022 2023 2025 20262024 Acquisitions ■ Hydro-Scape ■ Blue Max ■ Bissett ■ Glen Allen ■ Loma Vista ■ East Haven ■ Aspen Valley ■ Stone Forest ■ Angelo's ■ AB Supply ■ Evergreen Partners ■ South Coast Supply ■ Marshall Stone ■ Harmony Gardens ■ Pete Rose ■ Atlantic Irrigation ■ Village Nurseries ■ Terrazzo & Stone ■ Landscaper’s Choice ■ Auto-Rain ■ All American Stone ■ Landscape Express ■ Kirkwood ■ Stone Center ■ CentralPro ■ C&C Sand and Stone ■ All Around ■ Cutting Edge ■ All Pro Horticulture ■ Landscape Depot ■ Fisher’s Depot ■ Stone & Soil Depot ■ Voss Materials ■ Trendset Concrete ■ Design Outdoor ■ Dirt Doctors ■ Daniel Stone ■ Wittkopf ■ Empire Supplies ■ The Garden Dept ■ Big Rock ■ Alliance Stone ■ Modern Builders ■ BURNCO ■ Hedberg Supply ■ Alpine Materials ■ Dirt and Rock ■ Stone Center of VA ■ Lucky Landscape ■ Arizona Stone & Solstice ■ Timberwall ■ Melrose Irrigation ■ Rock & Block ■ Green Brothers ■ Semco Stone ■ Seffner Rock ■ J&J Materials ■ Triangle Landscape Supplies ■ Adams Wholesale ■ Link Outdoor Lighting ■ Hickory Hill ■ New England Silica ■ Timothy’s Center for Gardening ■ Pioneer Landscape Centers ■ Regal Chemical ■ JMJ Organics ■ Newsom Seed ■ Eggemeyer ■ Devil Mountain Wholesale Nursery ■ Hardscape.com ■ Cohen & Cohen ■ Millican Nurseries ■ OakStreet Nursery ■ Custom Stone ■ Pacific Nurseries ■ Green Trade Nursery ■ Grove Nursery ■ Nashville Nursery ■ Autumn Ridge Stone ■ Red’s Home & Garden ■ CC Landscaping Warehouse ■ French Broad Stone ■ JK Enterprise ■ BellStone Masonry ■ Preferred Seed ■ Across the Pond ■ Yard Works ■ Prescott Dirt ■ A&A Stepping Stone ■ River Valley Hort ■ Cape Cod Stone ■ Linzel Distributing ■ Jim Stone ■ Stone Plus ■ Kaknes Landscape ■ Madison Block & Stone ■ Telluride Natural Stone ■ Whittlesey Landscape ■ Bourget Flagstone ■ Reinders ■ Patterson Nursery
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7 ~35 # Markets served at scale1 Full Product Line Offering Missing both Hardscapes & Nursery Missing Nursery Missing Hardscapes No Presence Meaningful whitespace for future expansion Source: Management estimates; U.S. Census Bureau ~30 ~60 ~50 ~20 SiteOne offers all product lines in only ~30% of our target markets today… 1. Target markets as of the third quarter of 2026 are represented by metropolitan statistical areas (“MSAs”) where SiteOne currently has a presence or MSAs with a population above ~250K, which cover ~80% of the total U.S. population. Having a presence in Hardscapes or Nursery is defined as operating one or more branches in an MSA where those sales exceed 20% and 10% of total branch sales, respectively.
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8 Third Quarter 2026 highlights ✓ Net sales increased 3% to $1,291.1 million and 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; 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 Third Quarter 2026 highlights (compared to Third Quarter 2025): Post Quarter Highlights ✓ Board of Directors authorized a $500 million increase to the share repurchase program Source: Company filings
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9 $437.2 $458.5 Q3'25 Q3'26 $127.5 $138.3 Q3'25 Q3'26 Net sales Gross profit & margin Net income attributable to SiteOne Adjusted EBITDA Review of Third Quarter 2026 financial results Summary financials Financial highlights (compared to prior-year period) ($ in millions) ■ Net sales increased 3% to $1,291.1 million – Organic Daily Sales decreased 1% as continued soft market demand and a delay in fall applications due to hot and dry weather conditions more than offset higher price inflation – Acquired sales were $39.7 million, contributing 3% to Net sales growth ■ Gross profit increased 5% to $458.5 million – Gross margin expanded 80 basis points to 35.5%, driven by strong price realization, including fuel surcharges, and continued benefits from commercial initiatives ■ Net income attributable to SiteOne increased 8% to $63.9 million – Net income improvement reflects gross margin expansion, partially offset by lower sales volume and higher SG&A ■ Adjusted EBITDA increased 8% to $138.3 million – Adjusted EBITDA margin improved 60 basis points to 10.7% $59.1 $63.9 Q3'25 Q3'26 34.7% 10.7% 10.1% 35.5% +5% $1,258.2 $1,291.1 Q3'25 Q3'26 +3% +8% +8% Source: Company filings
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10 Balance sheet and cash flow highlights Working capital $1,085.3 Cash provided by operating activities $125.6 Capital expenditures $17.3 Quarter ended September 27, 2026 Balance sheet & cash flow highlights (compared to prior-year period) ($ in millions) 1. Net debt is calculated as long-term debt (net of issuance costs and discounts) plus finance leases, net of cash and cash equival ents 2. Leverage ratio defined as net debt (including finance leases) to trailing twelve months Adjusted EBITDA Source: Company filings ■ Working capital increased to $1.09 billion, compared to $1.06 billion – Increase attributable to working capital from acquisitions and early purchases of inventory ahead of price increases ■ Cash provided by operating activities decreased $3.0 million to $125.6 million, compared to $128.6 million – Driven by working capital changes, partially offset by higher Net income ■ Capital expenditures increased to $17.3 million, compared to $10.1 million – Reflects increased investment in branch locations and equipment ■ Net debt1 was $522.6 million, compared to $422.5 million – Liquidity of $566.4 million consisting of $88.4 million of cash and $478.0 million in available ABL borrowing capacity ■ Net debt / Adjusted EBITDA2 of 1.2x, compared to 1.0x – In line with target leverage range of 1.0x to 2.0x
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11 2014 – 2021 2022 2023 2024 2025 2026 Total ▪ JK Enterprise ▪ BellStone Masonry ▪ Preferred Seed ▪ Across the Pond ▪ Yard Works ▪ Prescott Dirt ▪ A&A Stepping Stone ▪ River Valley Horticultural ▪ Cape Cod Stone ▪ Linzel Distributing ▪ Jim Stone ▪ Stone Plus ▪ Kaknes Landscape ▪ Madison Block & Stone ▪ Telluride Stone ▪ Whittlesey Landscape ▪ J&J Materials ▪ Triangle Landscape Supplies ▪ Adams Wholesale Supply ▪ Link Outdoor Lighting ▪ Hickory Hill Farm & Garden ▪ New England Silica ▪ Timothy’s Center for Gardening ▪ Pioneer Landscape Centers ▪ Regal Chemical ▪ JMJ Organics ▪ Newsom Seed ▪ Eggemeyer ▪ Devil Mountain Wholesale Nursery ▪ Hardscape.com ▪ Cohen & Cohen Natural Stone ▪ Millican Nurseries ▪ OakStreet Nursery ▪ Custom Stone ▪ Pacific Nurseries ▪ Green Trade Nursery ▪ Grove Nursery ▪ Nashville Nursery ▪ Autumn Ridge Stone ▪ Red’s Home & Garden ▪ CC Landscaping Warehouse ▪ French Broad Stone ▪ Bourget Flagstone ▪ Reinders ▪ Patterson Nursery # Acquisitions 64 16 11 7 8 3 109 Annualized Net sales1 ~$1,225M ~$240M ~$320M ~$200M ~$55M ~$125M ~$2,165M # Branches added 280 48 61 28 9 14 440 Proven track record of successful acquisitions Source: Company data 1. Trailing twelve months (TTM) revenues in the year acquired
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12 M&A continues to add significant value Source: Company data Patterson Nursery Sales ✓Closed on August 4th ✓Leading grower and nationwide distributor of western nursery products ✓Single 200-acre location based in Eagle Creek, Oregon ✓Supports our nursery business across the country and expands our nursery product line into the Pacific Northwest SiteOne Patterson
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13 ✓ SiteOne is the leading industry consolidator ✓ Significant sourcing advantage with 80+ leaders scouting new growth opportunities ✓ Our pipeline remains robust ✓ Experienced M&A team driving strong acquisition growth ✓ Acquisitions are expected to be accretive and present significant profit growth potential Robust pipeline provides significant growth opportunity 13% 1. As of year-end 2025. Source: Management estimates; Company data; Kearney TAM Assessment, dated May 2026 ~$36bn market1 87%
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14 2026 Outlook ✓ End market demand expected to be down with declines in new residential construction and repair and upgrade more than offsetting resilient maintenance and new commercial construction ✓ Pricing expected to be up approximately 4% for the full year ✓ Organic Daily Sales expected to be flat to down 1% with lower end market demand and the effect of the 53rd week more than offsetting commercial initiatives benefits and price inflation ✓ Gross margin expected to improve with continued price realization and the benefit of our commercial initiatives ✓ SG&A as a percentage of Net sales expected to be up with lower sales volume, increased fuel and healthcare cost, and the 53rd week more than offsetting operational initiatives benefits ✓ Adjusted EBITDA margin expected to increase slightly ✓ Continued growth through M&A activity ✓ Full year Adjusted EBITDA expected to be $425 million to $440 million including a fourth quarter charge of $6 million to $8 million and the $4 million to $5 million negative effect of the 53rd week
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15 Proven management team Compelling and sustainable growth strategy Uniquely attractive industry Clear market leader Value-creating acquisitions Operational and commercial excellence Investment highlights
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Appendix Third Quarter 2026 Earnings
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17 Non-GAAP reconciliations A B C D Adjusted EBITDA Reconciliation Represents stock-based compensation expense recorded during the period. Represents any gain or loss associated with the sale of assets and termination of finance leases not in the ordinary course of business. 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 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. 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 of $1.3 million and $0.7 million for the second and first quarter of 2026, respectively; $1.1 million, $1.0 million, $1.8 million, and $0.3 million for the fourth, third, second, and first quarter of 2025, respectively; and $0.8 million for the fourth quarter of 2024. ($ in millions) 2026 2025 2024 Q3’26 Q2’26 Q1’26 Q4’25 Q3’25 Q2’25 Q1’25 Q4’24 Reported Net income (loss) $63.9 $139.3 $(24.1) $(7.8) $60.6 $132.1 $(27.5) $(21.5) Income tax expense (benefit) 22.4 48.3 (9.8) (5.4) 15.5 45.0 (9.4) (10.1) Interest expense, net 9.5 10.0 8.0 8.2 9.1 10.3 7.4 6.7 Depreciation & amortization 35.5 36.2 35.1 34.7 35.4 35.3 35.4 35.6 EBITDA $131.3 $233.8 $9.2 $29.7 $120.6 $222.7 $5.9 $10.7 Stock-based compensation 5.6 2.1 14.2 5.5 5.6 2.3 13.6 5.5 (Gain) loss on sale of assets (0.7) (0.6) (1.6) 0.3 0.1 (0.5) (0.2) 1.5 Acquisitions & other 2.1 1.9 3.7 2.1 1.2 2.2 3.1 14.1 Adjusted EBITDA $138.3 $237.2 $25.5 $37.6 $127.5 $226.7 $22.4 $31.8 A B C D
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18 Non-GAAP reconciliations ($ in millions) 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 Reported Net income $157.4 $124.4 $173.4 $245.4 $238.4 $121.3 $77.7 $73.9 $54.6 $30.6 Income tax expense 45.7 36.0 49.8 67.7 56.1 27.5 13.8 1.3 18.0 21.3 Interest expense, net 35.0 31.9 27.1 20.0 19.2 31.0 33.4 32.1 25.2 22.1 Depreciation & amortization 140.8 139.0 127.7 103.8 83.0 67.2 59.5 52.3 43.1 37.0 EBITDA $378.9 $331.3 $378.0 $436.9 $396.7 $247.0 $184.4 $159.6 $140.9 $111.0 Stock-based compensation 27.0 25.0 25.7 18.3 14.3 10.6 11.7 7.9 5.9 5.3 (Gain) Loss on sale of assets (0.3) 0.5 (0.5) (0.8) (0.1) (0.4) 0.3 (0.4) 0.6 -- Advisory fees -- -- -- -- -- -- -- -- -- 8.5 Financing fees -- 0.5 0.5 0.3 0.7 -- -- 0.8 1.7 4.6 Acquisitions, rebranding & other 8.6 20.9 7.0 9.6 3.5 3.0 4.7 8.1 8.1 4.9 Adjusted EBITDA $414.2 $378.2 $410.7 $464.3 $415.1 $260.2 $201.1 $176.0 $157.2 $134.3 Represents stock-based compensation expense recorded during the period. Represents any gain or loss associated with the sale of assets and termination of finance leases not in the ordinary course of business. Represents fees paid to CD&R and Deere for consulting services. In connection with the IPO, we entered into termination agreements with CD&R and Deere pursuant to which the parties agreed to terminate the related consulting agreements. Represents fees associated with our debt refinancing and debt amendments, as well as fees incurred in connection with our initial public offering and secondary offerings. 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 related to the purchase accounting of Devil Mountain as well as charges during Fiscal Year 2025 and Fiscal Year 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. 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 of $4.2 million and $2.5 million for Fiscal Year 2025 and Fiscal Year 2024, respectively. A B C D A B C D E E F F Adjusted EBITDA Reconciliation
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19 Non-GAAP reconciliations 2026 Organic Daily Sales Reconciliation 2026 2025 ($ in millions) FY’26 Q4’26 Q3’26 Q2’26 Q1’26 FY’25 Q4’25 Q3’25 Q2’25 Q1’25 Reported Net sales -- -- $1,291.1 $1,530.7 $940.1 $4,704.8 $1,045.6 $1,258.2 $1,461.6 $939.4 Organic Sales -- -- 1,247.8 1,479.2 927.7 4,692.3 1,039.0 1,254.6 1,459.3 939.4 Acquisition contribution -- -- 43.3 51.5 12.4 12.5 6.6 3.6 2.3 -- Selling Days 256 65 63 64 64 252 61 63 64 64 Organic Daily Sales -- -- $19.8 $23.1 $14.5 $18.6 $17.0 $19.9 $22.8 $14.7 B A Represents Net sales from acquired branches that have not been under our ownership for at least four full fiscal quarters at the start of Fiscal Year 2026. Includes Net sales from branches acquired in 2026 and 2025. Organic Sales equals reported Net sales less Net sales from branches acquired in 2026 and 2025. B A