Q/C Technologies, Inc.

Item 4.01 Changes in Registrant’s Certifying Accountant. (a) Dismissal of Independent Registered Public Accounting Firm On March 9, 2026, the Audit Committee of the Board of Directors (the “Committee”) of Q/C Technologies, Inc. (the “Company”) approved the dismissal of Stephano Slack LLC (“Stephano Slack”) as the Company’s independent registered public accounting firm, effective as of the same date. The reports of Stephano Slack on the Company’s consolidated financial statements for the fiscal years ended December 31, 2024 and December 31, 2023, did not contain an adverse opinion or a disclaimer of opinion, and were not qualified or modified as to uncertainty, audit scope or accounting principles, except as follows: Stephano Slack’s report on the consolidated financial statements of the Company as of December 31, 2024 and 2023 and for each of the years then ended, contained a separate paragraph stating, “The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern. As discussed in Note 3 to the consolidated financial statements, the Company has experienced a net loss and negative cash flows from operations for the year ended December 31, 2024, which raises substantial doubt about their ability to continue as a going concern. Management’s plans in regard to these matters are also described in Note 3. The consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.” From October 3, 2023, through March 9, 2026, the date of Stephano Slack’s dismissal, there were (a) no disagreements (as defined in Item 304(a)(1)(iv) of Regulation S-K and the related instructions) between the Company and Stephano Slack on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedures, which disagreements, if not resolved to the satisfaction of Stephano Slack, would have caused Stephano Slack to make reference to such disagreement in its reports, if such reports had been issued, and (b) no “reportable events” (as defined in Item 304(a)(1)(v) of Regulation S-K and the related instructions). The Company provided Stephano Slack with a copy of this Current Report on Form 8-K prior to its filing with the U.S. Securities and Exchange Commission (the “SEC”) and requested that Stephano Slack furnish the Company with a letter addressed to the SEC, pursuant to Item 304(a)(3) of Regulation S-K, stating whether it agrees with the above statements and, if it does not agree, the respects in which it does not agree. A copy of the letter, dated March 11, 2026, is filed as Exhibit 16.1 (which is incorporated by reference herein) to this Current Report on Form 8-K. (b) Appointment of New Independent Registered Public Accounting Firm On March 9, 2026, the Committee engaged Grassi & Co., CPAs, P.C. (“Grassi”) as the Company’s independent registered public accounting firm to audit the Company’s financial statements for the year ended December 31, 2025, effective immediately. During the fiscal years ended December 31, 2025, and December 31, 2024, and the subsequent interim period through March 9, 2026, neither the Company nor anyone on its behalf has consulted with Grassi regarding (i) the application of accounting principles to any specified transaction, either completed or proposed, or the type of audit opinion that might be rendered on the Company’s financial statements, and neither a written report nor oral advice was provided to the Company that Grassi concluded was an important factor considered by the Company in reaching a decision as to any accounting, auditing, or financial reporting issue, or (ii) any matter that was either the subject of a “disagreement,” as defined in Item 304(a)(1)(iv) of Regulation S-K, or a “reportable event,” as defined in Item 304(a)(1)(v) of Regulation S-K. Item 9.01. Financial Statements and Exhibits. (d) Exhibits. Exhibit Description Number ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────── 16.1 Letter dated March 11, 2026, from Stephano Slack LLC to the U.S. Securities and Exchange Commission. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document)