6-K

UNITED STATESSECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANTTO RULE 13a-16 OR 15d-16 UNDER

THE SECURITIES EXCHANGE ACT OF 1934

For the month of September 2025

Commission File Number: 001-41426

Nano Labs Ltd

(Exact name of registrant as specified in its charter)

China Yuangu Hanggang Technology Building

509 Qianjiang Road, Shangcheng District,

Hangzhou, Zhejiang, 310000

People’s Republic of China

(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 ☐

EXPLANATORY NOTE

The document attached as Exhibit 99.1 to this report on Form 6-K is hereby incorporated by reference into the Company’s Registration Statement on Form F-3, as amended, initially filed with the U.S. Securities and Exchange Commission on August 14, 2023 (Registration No. 333-273968) and the Company's Registration Statement on Form F-3, as amended, initially filed with the U.S. Securities and Exchange Commission on August 4, 2025 (Registration No. 333-289211) and shall be a part thereof from the date on which this current report is furnished, to the extent not superseded by documents or reports subsequently filed or furnished.

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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.

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EXHIBIT INDEX

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Exhibit 99.1

Nano Labs Ltd Announces Uplisting to The NasdaqGlobal Market

HONG KONG, September 23, 2025 (GLOBE NEWSWIRE) -- Nano Labs Ltd (Nasdaq: NA) (“we,” the “Company” or “Nano Labs”), a leading Web 3.0 infrastructure and product solution provider, today announced that it has been approved to transfer from the Nasdaq Capital Market to the Nasdaq Global Market, effective with the open of business on September 19, 2025. The company’s shares will continue to trade under the ticker symbol “NA.”

Mr. Jianping Kong, Chairman and Chief Executive Officer of the Company, commented, “We are thrilled and honored to complete this uplisting. It represents the culmination of our team’s long-term efforts and serves as a valuable recognition from both investors and the market. With the enhanced platform and more stringent standards of the Nasdaq Global Market, we believe we are well positioned to pursue broader opportunities, unlock greater growth potential, and deliver enhanced value to our shareholders.”

About Nano Labs Ltd

Nano Labs Ltd is a leading Web 3.0 infrastructure and product solution provider. Nano Labs is committed to the development of high throughput computing (“HTC”) chips and high-performance computing (“HPC”) chips. Nano Labs has built a comprehensive flow processing unit (“FPU”) architecture which offers solution that integrates the features of both HTC and HPC. In addition, Nano Labs has actively positioned itself in the crypto assets space, adopting BNB as its primary reserve asset. It has reserved in mainstream cryptocurrencies including BNB and BTC, and established an integrated platform covering multiple business verticals, including HTC solutions and HPC solutions*. For more information, please visit the Company’s website at: ir.nano.cn.

*According to an industry report prepared by Frost & Sullivan.

Forward-Looking Statements

*This press release contains forward-lookingstatements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended,*and as defined in theU.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements include, without limitation, the Company’splan to appeal the Staff’s determination, which can be identified by terminology such as “may,” “will,”“expect,” “anticipate,” “aim,” “estimate,” “intend,” “plan,” “believe,”“potential,” “continue,” “is/are likely to” or other similar expressions. Such statements are basedupon management’s current expectations and current market and operating conditions, and relate to events that involve known or unknownrisks, uncertainties and other factors, all of which are difficult to predict and many of which are beyond the Company’s control,which may cause the Company’s actual results, performance or achievements to differ materially from those in the forward-lookingstatements. Further information regarding these and other risks, uncertainties or factors is included in the Company’s filings withthe Securities and Exchange Commission. The Company does not undertake any obligation to update any forward-looking statement as a resultof new information, future events or otherwise, except as required under law.

Investor Contact:

Nano Labs Ltd

Email: ir@nano.cn

Ascent Investor Relations LLC

Tina Xiao

Phone: +1-646-932-7242

Email: investors@ascent-ir.com