Hydrofarm IPO Presentation Deck

Top-line growth and margin enhancement drivers Revenue drivers Gross profit drivers Bottom- line drivers End-market growth Proprietary and preferred brand mix shift Operating leverage Brand marketing and product innovation Customer investment program Debt reduction DMI rollout Supply chain/logistics efficiency Tax savings from NOLS Key metrics $255mm -17% Q3 YTD 2020 net sales Q3 YTD 2020 gross margin CONFIDENTIAL 18.7% +680bps YOY (Q3 2020) gross margin expansion 2005-Sept. 2020 net sales CAGR 6.3% +840bps YOY (Q3 2020) Adj. EBITDA¹ margin expansion Q3 YTD 2020 Adj. EBITDA¹ margin Source: Company information and management estimates HYDROFARM Note: Ad EBITDA margin is a non-GAAP measure, which is obtained by dividing Adi EBITDA by net sales, see reconciliation to the nearest GAAP measure at the end of this presentation 25

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