Hydrofarm IPO Presentation Deck

Adjusted EBITDA reconciliation $mm Net income Interest Taxes Depreciation and amortization Other income, net Stock-based compensation expense Impairment, restructuring, and other¹ Loss on debt extinguishment Adj. EBITDA 2018 (32.9) 11.6 (0.4) 8.3 (1.0) HYDROFARM (0.8mm (N) Other expenses ($0.2mm) 7.2 (7.2) 2019 Q3 YTD 2019 (40.1) (22.4) 13.5 9.8 (0.2) 5.2 (0.7) 7.0 (0.1) 0.2 10.0 0.7 (10.2) (0.3) 0.2 3.6 0.4 (3.8) CONFIDENTIAL Q3 YTD 2020 2.1 7.9 0.4 5.2 (0.1) 0.4 0.3 16.1 Source: Company information management estimates Note: For YTD 2020, includes costs and expenses related to the anticipated IPO ($0.3mm) For YTD 2019, includes costs and expenses related to 0) Corporate restructuring and severance payments ($2.1mm) (1) Various SEC filings, lender financial advisor oversight, and private placements of equity and refinancing initiatives ($1.5mm) For 2019, includes costs and expenses related to impairment of intangible assets related to Canadian acquisition ($5.4mm) (i) Restructuring costs including consulting costs to evaluate and complete recapitalization ($2.0mm) () Coets related to SEC filings ($1.0mmi (iv) Severance costs (50.8mm) 0) Costs related to earty lease termination and other expenses ($0.8mm) For 2015, Includes costs and expenses related to 0) Impairment of intangible assets ($2.7mm) 0) Restructuring costs including consulting costs to evaluate and complete recupitalization ($5,4mm) (8) Costs related to SEC fings 33

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