ZeroStack Corp. filed a Form 8-K on November 12, 2026, disclosing the dismissal of its independent registered public accounting firm, Davidson & Company, LLP, effective November 5, 2026, and the appointment of L J Soldinger Associates as its replacement.

Key Highlights

  • Auditor dismissed: Davidson & Company, LLP was dismissed effective November 5, 2026, a decision approved by the company's audit committee on that date.
  • Davidson's tenure: Davidson had been retained by ZeroStack Corp. since October 20, 2020, and issued clean opinions on financial statements for fiscal years 2020 through 2025.
  • Reportable event flagged: Davidson informed the company that a "reportable event" within the meaning of Item 304(a)(1)(v) of Regulation S-K may exist, citing incomplete interim review procedures and missing supporting documentation for certain transactions.
  • No disagreements reported: The filing states there were no disagreements with Davidson on accounting principles, practices, financial statement disclosure, or auditing scope or procedure through the date of dismissal.
  • New accountant appointed: L J Soldinger Associates, Certified Public Accountants, were appointed on November 6, 2026, to review financial statements for the quarter ended September 30, 2026, and to audit the fiscal year ending December 31, 2026.
  • No prior consultation: According to the filing, L J Soldinger had not previously been consulted by the company on accounting principles, audit opinions, or any matter constituting a disagreement or reportable event.

ZeroStack's Auditor Change: Dismissal, Reportable Event, and New Appointment

ZeroStack Corp. (NASDAQ:ZSTK), incorporated in Texas and headquartered in Dallas, disclosed an auditor change under Item 4.01 of Form 8-K filed November 12, 2026. The company's audit committee approved the dismissal of Davidson & Company, LLP on November 5, 2026, ending a relationship that began October 20, 2020. During that period, according to the filing, Davidson's audit reports on the company's consolidated financial statements for each fiscal year from 2020 through 2025 "did not contain any adverse opinion or a disclaimer of opinion, nor were they qualified or modified as to uncertainty, audit scope or accounting principles."

The filing discloses one notable item flagged by Davidson prior to departure. Davidson informed ZeroStack that a "reportable event" within the meaning of Item 304(a)(1)(v) of Regulation S-K may exist "on the basis that as of the date of Davidson's dismissal, Davidson's interim review procedures remained incomplete, including procedures requiring additional supporting documentation for certain transactions that occurred during the period." The company stated it provided Davidson with a copy of its disclosures and requested a confirming letter, which Davidson supplied dated November 12, 2026, filed as Exhibit 16.1.

One day after the dismissal, on November 6, 2026, the company appointed L J Soldinger Associates as its new independent accountants. Their engagement covers the quarterly review for the period ended September 30, 2026, and the annual audit for the fiscal year ending December 31, 2026. The filing states that neither ZeroStack nor anyone acting on its behalf had previously consulted L J Soldinger on accounting principles, audit opinions, or any matter that was the subject of a disagreement or reportable event prior to this appointment.

What Was Disclosed

ZeroStack Corp. reported the November 5, 2026 dismissal of auditor Davidson & Company, LLP, the existence of a potential reportable event involving incomplete interim review procedures, and the November 6, 2026 appointment of L J Soldinger Associates as its new independent accounting firm.