ZK International (ZKIN) replaces Fortune CPA with Li CPA LLC as auditor

Rhea-AI Filing Summary

ZK International Group Co., Ltd. has changed its independent auditors. The Company dismissed Fortune CPA, Inc. as certifying accountant effective April 2, 2026, following Board approval on April 1, 2026, and engaged Li CPA LLC as its new independent auditor on May 13, 2026.

Fortune CPA had audited ZK International’s financial statements for the years ended September 30, 2023, 2024 and 2025. During its engagement, Fortune did not issue adverse or qualified opinions, and the Company reports no disagreements on accounting principles, financial disclosure, or audit scope, nor any reportable events under Item 304(a)(1)(v)(A)-(D) of Regulation S-K.

Insights

Audit & governance analyst

Auditor change disclosed with no reported disputes or adverse opinions.

ZK International replaced Fortune CPA, Inc. with Li CPA LLC as its independent auditor for the fiscal year ending September 30, 2026. The filing notes that Fortune’s prior reports on the years ended September 30, 2023, 2024 and 2025 contained no adverse or qualified opinions.

The Company also states there were no disagreements on accounting principles, disclosure, or audit procedures and no reportable events under Item 304(a)(1)(v)(A)-(D) of Regulation S‑K during Fortune’s tenure. This framing presents the transition as an administrative change rather than a response to identified audit issues.

An auditor change can still matter to investors because it introduces a new firm’s judgment on accounting policies and controls. Subsequent filings audited by Li CPA LLC will reveal how the new auditor assesses ZK International’s financial reporting over the fiscal year ending September 30, 2026.

Key Figures

Dismissal effective date: April 2, 2026 Board approval date: April 1, 2026 New auditor engagement date: May 13, 2026 +3 more

6 metrics

Dismissal effective date April 2, 2026 Effective date Fortune CPA, Inc. was dismissed as auditor

Board approval date April 1, 2026 Date Board of Directors approved dismissal of Fortune

New auditor engagement date May 13, 2026 Date Li CPA LLC was engaged as independent auditor

Fiscal year coverage by Fortune Years ended September 30, 2023, 2024, 2025 Periods for which Fortune audited financial statements

Future audit period Fiscal year ending September 30, 2026 Period to be audited by Li CPA LLC

Fortune engagement date June 2, 2024 Date Fortune CPA, Inc. was engaged as auditor

Key Terms

independent auditors, reportable events, Regulation S-K, certifying accountant, +1 more

5 terms

independent auditors financial

"dismissed its independent auditors, Fortune CPA, Inc. (“Fortune”)"

Independent auditors are outside, licensed accountants who examine a company’s books, records and internal controls and issue an objective opinion on whether the financial statements accurately reflect the business’s financial position. Investors treat their report like a neutral inspector’s stamp — it increases trust, makes financial results easier to compare, and alerts readers if there are errors, omissions or other problems that could affect investment decisions.

reportable events regulatory

"None of the reportable events described under Item 304(a)(1)(v)(A)-(D)"

Reportable events are significant incidents or changes a company is legally required to disclose to regulators and the public, such as major safety problems, legal actions, financial irregularities, or management changes. They matter to investors because these events can alter a company’s risk profile or future performance, much like a dashboard warning light signals a problem that could affect a car’s safety or reliability. Timely disclosure helps investors make informed decisions and maintain market fairness.

Regulation S-K regulatory

"Item 304(a)(1)(v)(A)-(D) of Regulation S-K occurred"

A set of U.S. Securities and Exchange Commission rules that tell public companies which narrative and qualitative details must be disclosed in filings, such as risk factors, management discussion, executive pay, legal proceedings and business description. Think of it as a standardized checklist or blueprint that ensures investors get the same types of background information from every company so they can compare risks, management quality and strategy before making investment decisions.

certifying accountant financial

"CHANGES IN REGISTRANTS' CERTIFYING ACCOUNTANT"

Form 20-F regulatory

"whether the registrant files or will file annual reports under cover of Form 20-F"

Form 20-F is the standardized annual disclosure that non-U.S. companies must file with the U.S. securities regulator when their shares are traded in the U.S.; it contains audited financial statements, a plain-language description of the business, management discussion, governance details and key risk factors. It matters to investors because it provides a consistent, comparable company “report card” and rulebook, helping buyers assess financial health, governance and risks before investing.

Form 6-K: How Foreign Companies Report to the SEC →

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of May 2026

Commission File Number: 001-38146

ZK INTERNATIONAL GROUP CO., LTD.

(Exact name of registrant as specified in its charter)

c/o Zhejiang Zhengkang Industrial Co., Ltd.

No. 678 Dingxiang Road, Binhai Industrial Park

Economic & Technology Development Zone

Wenzhou, Zhejiang Province

People’s Republic of China 325025

(Address of principal executive office) 

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☒ Form 40-F ☐

CHANGES IN REGISTRANTS' CERTIFYING ACCOUNTANT

(a) Dismissal of Certifying Accountant

Effective April 2, 2026, ZK International Group Co., Ltd. (the “Company” or the “Registrant”) dismissed its independent auditors, Fortune CPA, Inc. (“Fortune”), which action was approved by the Company’s Board of Directors on April 1, 2026.

Fortune was engaged by the Company on June 2, 2024 and rendered a report on the Company’s financial statements for the year ended September 30, 2023, 2024 and 2025. For the year ended September 30, 2023, 2024 and 2025 and through the date of this report, Fortune has neither provided any adverse opinion or qualifications on our financial statements nor had a disagreement with the Company since their engagement on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which disagreements that, if not resolved to Fortune’s satisfaction, would have caused Fortune to make reference to the subject matter of the disagreement in connection with the audit of the Company’s financial statements.

None of the reportable events described under Item 304(a)(1)(v)(A)-(D) of Regulation S-K occurred within period of the engagement of Fortune up to the date of dismissal.

Fortune has provided a letter to us, dated May 9, 2026 and addressed to the SEC, which is attached hereto as Exhibit 16.1 and is hereby incorporated herein by reference.

(b) Engagement of New Certifying Accountant

On May 13, 2026, we engaged Li CPA LLC (“New Auditor”) as our independent auditors for the fiscal year ending September 30, 2026.

During the two most recent fiscal years and in the subsequent period through the date of this report, we have not consulted with New Auditor with respect to the application of accounting principles to a specified transaction, either completed or proposed, or the type of audit opinion that would have been rendered on the our consolidated financial statements, or any other matters set forth in Item 304(a)(2)(i) or (ii) of Regulation S-K.

Financial Statements and Exhibits

Exhibit No		Description
16.1		Letter of Fortune CPA, Inc. dated May 9, 2026, regarding change in independent registered public accounting firm.

1

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: May 21, 2026	ZK International Group Co., Ltd.
	By:	/s/  Ruihong Ma
		Ruihong Ma
		Chief Executive Officer

2

FAQ

What change in auditors did ZK International (ZKIN) disclose in this 6-K?

ZK International replaced Fortune CPA, Inc. with Li CPA LLC as its independent auditor for the fiscal year ending September 30, 2026. The dismissal of Fortune was effective April 2, 2026, after Board approval on April 1, 2026.

Did Fortune CPA issue any adverse opinions on ZK International (ZKIN) financial statements?

No, Fortune CPA did not issue adverse or qualified opinions on ZK International’s financial statements for the years ended September 30, 2023, 2024 and 2025. The filing states Fortune’s reports contained no such negative conclusions during its engagement.

Were there any disagreements between ZK International (ZKIN) and Fortune CPA?

The Company reports no disagreements with Fortune CPA on accounting principles, financial statement disclosure, or audit scope and procedures. It also states that none of the reportable events under Item 304(a)(1)(v)(A)-(D) of Regulation S-K occurred during Fortune’s engagement.

When did Li CPA LLC become ZK International (ZKIN)’s new independent auditor?

Li CPA LLC was engaged as ZK International’s new independent auditor on May 13, 2026, for the fiscal year ending September 30, 2026. The filing also notes there were no prior consultations with Li CPA LLC on specific accounting matters before this engagement.

Did ZK International (ZKIN) consult Li CPA LLC before hiring them as auditor?

The Company states it did not consult Li CPA LLC during the two most recent fiscal years or the subsequent interim period on accounting principles, proposed transactions, expected audit opinions, or any matters described in Item 304(a)(2)(i) or (ii) of Regulation S-K.

Filing Exhibits & Attachments

2 documents

Other Documents

• EX-16.1 EXHIBIT 16.1 2.5 KB
• EX-16 GRAPHIC 4.1 KB