Richtech Robotics files amendment on auditor change

Richtech Robotics Inc. filed an amended current report to add documentation related to its previously disclosed change in independent auditor.

Rhea-AI Filing Summary

Richtech Robotics Inc. filed an amended current report to add documentation related to its previously disclosed change in independent auditor. The amendment notes that the company had terminated Bush & Associates CPA LLC as its independent registered accounting firm and engaged CBIZ CPAs P.C. to audit the fiscal year ending September 30, 2026 and review the quarters ending March 31, 2026 and June 30, 2026. The update mainly serves to file a letter from Bush & Associates to the SEC, stating whether it agrees or disagrees with the company’s earlier descriptions of the auditor change.

8-K Event Classification

2 items: 4.01, 9.01

2 items

Item 4.01 Changes in Registrant's Certifying Accountant Governance

The company changed its independent auditing firm, which may involve disagreements on accounting matters.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

Key Figures

Fiscal year audit period: Fiscal year ending September 30, 2026 Quarterly review period: Quarter ending March 31, 2026 Quarterly review period: Quarter ending June 30, 2026 +1 more

4 metrics

Fiscal year audit period Fiscal year ending September 30, 2026 Period to be audited by CBIZ CPAs P.C.

Quarterly review period Quarter ending March 31, 2026 Quarterly financial statements to be reviewed by CBIZ

Quarterly review period Quarter ending June 30, 2026 Quarterly financial statements to be reviewed by CBIZ

Former auditor letter date March 26, 2026 Date of Bush & Associates letter filed as Exhibit 16.1

Key Terms

independent registered public accounting firm, Audit Committee, Regulation S-K Item 304(a)(3), Emerging growth company, +2 more

6 terms

independent registered public accounting firm financial

"the Company engaged CBIZ CPAs P.C. (“CBIZ”) as the Company’s independent registered public accounting firm"

An independent registered public accounting firm is an outside accounting company officially registered with the government regulator to examine and report on a public company's financial records and controls. Investors treat its reports like an impartial inspector’s certificate — they add credibility to financial statements, help spot errors or misleading claims, and reduce the risk that shareholders are relying on unchecked or biased numbers.

Audit Committee financial

"the Audit Committee (the “Committee”) of the Board of Directors (the “Board”)"

A company's audit committee is a small group of board members who act like independent inspectors for the firm's finances, overseeing how financial reports are prepared, monitoring internal controls, and managing the relationship with external auditors. Investors care because a strong audit committee reduces the risk of accounting errors, fraud, or misleading statements, making financial statements more trustworthy and helping protect shareholder value.

Regulation S-K Item 304(a)(3) regulatory

"the Company is filing a copy of this letter pursuant to Regulation S-K Item 304(a)(3)"

Emerging growth company regulatory

"Emerging growth company"

An emerging growth company is a recently public or smaller public firm that qualifies for temporary, lighter regulatory and disclosure rules to reduce the cost and effort of being public. For investors, it means the company may provide less historical financial detail and face fewer reporting requirements than larger firms, so it can grow more quickly but also carries higher uncertainty—like buying a promising early-stage product with fewer user reviews.

Changes in Registrant’s Certifying Accountant regulatory

"Item 4.01 Changes in Registrant’s Certifying Accountant."

current report on Form 8-K/A regulatory

"This on /A (this “Report”) amends the on filed with the U.S. Securities and Exchange Commission"

A current report on Form 8‑K/A is an amended filing that updates a previously submitted Form 8‑K, the document companies use to quickly tell the market about important business or financial events. Investors pay attention because the amendment corrects or adds details—like fixing errors, clarifying terms, or changing the expected impact—so it’s like a corrected news bulletin that can alter how you assess a company’s prospects and risk.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Richtech Robotics Inc. (RR) change in this amended 8-K/A?

Richtech Robotics Inc. filed an amended report mainly to add a letter from its former auditor, Bush & Associates. The letter addresses whether Bush & Associates agrees or disagrees with Richtech’s earlier disclosure about the change in its certifying accountant.

Why did Richtech Robotics Inc. (RR) involve Bush & Associates in this filing?

The company received a letter from Bush & Associates on March 26, 2026, responding to its prior disclosure about the auditor change. Richtech is filing this letter as Exhibit 16.1, as required under Regulation S-K Item 304(a)(3) for changes in certifying accountants.

Who is the new independent auditor for Richtech Robotics Inc. (RR)?

Richtech Robotics Inc. engaged CBIZ CPAs P.C. as its independent registered public accounting firm. CBIZ will audit the company’s financial statements for the fiscal year ending September 30, 2026 and review quarterly statements for the periods ending March 31, 2026 and June 30, 2026.

What is the role of the Audit Committee in Richtech Robotics Inc. (RR)’s auditor change?

The Audit Committee and the Board of Directors approved and ratified terminating Bush & Associates and engaging CBIZ CPAs P.C. as the new auditor. Their approval covers the fiscal 2026 audit and quarterly reviews for March 31, 2026 and June 30, 2026.

What exhibits are included in Richtech Robotics Inc. (RR)’s amended 8-K/A?

The amended report includes Exhibit 16.1, a letter from Bush & Associates CPA to the SEC dated March 26, 2026. It also references Exhibit 104, the cover page interactive data file embedded within the Inline XBRL document for the company’s filing.

Does this Richtech Robotics Inc. (RR) filing change its previously reported auditor switch?

The filing does not change the previously reported switch from Bush & Associates to CBIZ CPAs P.C. It primarily supplements the prior disclosure by adding Bush & Associates’ formal letter stating its position on the company’s earlier description of the auditor change.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/30/2026 - 05:29 PM Learn about SEC filing dates

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K/A

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of report (Date of earliest event reported): March 13, 2026

Richtech Robotics Inc.

(Exact Name of Registrant as Specified in Charter)

Nevada		001-41866		88-2870106
(State or Other Jurisdiction of Incorporation)		(Commission File Number)		(I.R.S. Employer Identification No.)

2975 Lincoln Rd

Las Vegas, NV 89115

(Address of Principal Executive Offices and Zip Code)

(866) 236-3835

Registrant’s Telephone Number, Including Area Code

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐	Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Class B Common Stock, par value $0.0001 per share		RR		The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

EXPLANATORY NOTE

This Current Report on Form 8-K/A (this “Report”) amends the Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the “SEC”) on March 19, 2026 (the “Original 8-K”) by Richtech Robotics Inc. (the “Company”) disclosing that on (i) March 17, 2026, the Audit Committee (the “Committee”) of the Board of Directors (the “Board”) and the Board of the Company terminated Bush & Associates CPA LLC (“Bush & Associates”) as the Company’s independent registered accounting firm and (ii) on March 13, 2026, approved and ratified by the Committee and the Board, the Company engaged CBIZ CPAs P.C. (“CBIZ”) as the Company’s independent registered public accounting firm to audit the Company’s financial statements for the fiscal year ending September 30, 2026 and to review the Company’s quarterly financial statements for the quarters ending March 31, 2026 and June 30, 2026.

This Report is being filed to disclose that the Company has received a copy of Bush & Associates’ letter, and the Company is filing a copy of this letter pursuant to Regulation S-K Item 304(a)(3).

Item 4.01 Changes in Registrant’s Certifying Accountant.

On March 26, 2026, the Company received a copy of a letter from Bush & Associates, stating whether it agrees or disagrees with the statements in the Company’s Original 8-K. A copy of this letter is filed herewith as Exhibit 16.1 to this Report.

Item 9.01 Financial Statements and Exhibit.

Exhibit Number		Description
16.1		Letter of Bush & Associates CPA to the Securities and Exchange Commission dated March 26, 2026.
104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

1

SIGNATURE

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 hereunto duly authorized.

	RICHTECH ROBOTICS INC.
	By:	/s/ Zhenwu (Wayne) Huang
		Name:	Zhenwu (Wayne) Huang
		Title:	Chief Executive Officer
Dated: March 30, 2026

2

Filing Exhibits & Attachments

4 documents

Other Documents

• EX-16.1 LETTER OF BUSH & ASSOCIATES CPA TO THE SECURITIES AND EXCHANGE COMMISSION DATED 3.2 KB
• EX-101 XBRL SCHEMA FILE 3.0 KB
• EX-101 XBRL LABEL FILE 33.4 KB
• EX-101 XBRL PRESENTATION FILE 21.8 KB