Hydrofarm IPO Presentation Deck

Disclaimer CONFIDENTIAL Hydrofarm Holdings Group, Inc. (together with its subsidiaries, the "Company") has filed a registration statement (File No. 333-250037), including a preliminary prospectus, with the Securities and Exchange Commission (the "SEC") in connection with the offering to which this presentation relates. Sales of securities of the Company offered pursuant to the registration statement may not be made or offers for such securities accepted prior to the registration statement becoming effective. Before making a decision to invest, you should read the prospectus in that registration statement and other documents that the Company has filed with the SEC for more complete information about the Company and the offering. You may obtain these documents for free by visiting EDGAR on the SEC's web site at www.sec.gov. Copies of the preliminary prospectus may also be obtained, when available, from J.P. Morgan Securities LLC, c/o J.P. Morgan Securities LLC, Attention: Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, or by telephone, at (866) 803-9204; or Stifel, Nicolaus & Company, Incorporated, Attention: Prospectus Department, One Montgomery Street, Suite 3700, San Francisco, CA 94104, by telephone at +1 (415) 364-2720 or by email at [email protected]. This presentation shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state or jurisdiction. FORWARD LOOKING STATEMENTS IMPORTANT NOTICE REGARDING FORWARD-LOOKING STATEMENTS This presentation regarding the Company is strictly confidential and is for you to familiarize yourself with the Company. The Company requests that you keep any information provided at this meeting confidential and that you do not disclose any of the information to any other parties without the express written permission of the Company. This presentation contains forward-looking statements. In some cases, you can identify forward-looking statements by the words "will," "expect." "intend," "plan," "objective," "believe," "estimate," "potential," "continue" and "ongoing," or the negative of these terms, or other comparable terminology intended to identify statements about the future. These statements are based on management's current beliefs and expectations. These statements include but are not limited to statements regarding the Company's financial results, future financial position, expected growth of cash flows, business strategy, budgets, projected costs. projected capital expenditures, taxes, plans, objectives, potential synergies, industry trends and growth opportunities. These statements involve substantial known and unknown risks, uncertainties and other factors that may cause the Company's actual results, performance or achievements to be materially different from the information expressed or implied by these forward-looking statements. The Company may not actually achieve the plans, intentions or expectations disclosed in its forward-looking statements, and you should not place undue reliance on the Company's forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements the Company makes. The forward-looking statements in this presentation represent the Company's views as of the date of this presentation. The Company's anticipates that subsequent events and developments will cause the its views to change. However, while the Company may elect to update these forward-looking statements at some point in the future, the Company has no current intention of doing so except to the extent required by applicable law. You should, therefore, not rely on these forward-looking statements as representing the Company's views as of any date subsequent to the date of this presentation. This presentation also contains estimates and other statistical data made by independent parties and by us relating to market size and growth and other data about our industry. This data involves a number of assumptions and limitations, and you are cautioned not to give undue weight to such estimates. In addition, projections, assumptions, and estimates of our future performance and the future performance of the markets in which we operate are necessarily subject to a high degree of uncertainty and risk. NON-GAAP MEASURES This presentation contains financial information determined by methods other than in accordance with accounting principles generally accepted in the United States of America ("GAAP"). Management uses these "non- GAAP measures in its analysis of the Company's performance. Management believes these non-GAAP financial measures allow for better comparability of period to period operating performance. Additionally, the Company believes this information is utilized by regulators and market analysts to evaluate a company's financial condition and therefore, such information is useful to investors. These disclosures should not be viewed as a substitute for operating results determined in accordance with GAAP, nor are they necessarily comparable to non-GAAP performance measures that may be presented by other companies. A reconciliation of the non-GAAP measures used in this presentation to the most directly comparable GAAP measures is provided in the Appendix to this presentation. HYDROFARM 1

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