Hydrofarm Holdings Group Dismisses Auditor BDO USA, Appoints Marcum LLP Amid Financial Scrutiny

Hydrofarm Holdings Group, Inc. has abruptly dismissed its independent registered public accounting firm, BDO USA, P.C., and appointed Marcum LLP as its new auditor. The change, effective April 18, 2026, was not the result of any disagreements between Hydrofarm and BDO on matters of accounting principles, financial statement disclosure, or auditing scope. However, the sudden auditor switch, formally disclosed in an 8-K filing with the SEC, places the company under immediate financial reporting scrutiny and raises questions about the timing and underlying motivations during a period of significant market pressure for the hydroponics and controlled environment agriculture sector.

The company's board of directors approved the dismissal of BDO and the engagement of Marcum. In the required disclosures, Hydrofarm stated that BDO's reports on the company's financial statements for the past two fiscal years did not contain any adverse opinion or disclaimer of opinion, nor were they qualified or modified as to uncertainty, audit scope, or accounting principles. This formal language suggests the change was not precipitated by a catastrophic audit finding, but the procedural nature of the shift does little to alleviate investor concerns about stability and transparency in the company's financial controls.

The move signals internal pressure to reassess financial oversight and potentially streamline audit processes. For a publicly traded company in a volatile industry, an unplanned auditor change is a significant event that often triggers heightened regulatory attention and can impact investor confidence. The filing indicates that Hydrofarm has authorized BDO to respond fully to any inquiries from Marcum regarding the transition, a standard but critical step for the new auditor to understand the company's financial history and any unresolved issues.