Company: NCL
Filing Date: 2025-11-25
Form Type: 424B3
Source: 0001575872-25-000725
Chunk: 0

Company: Northann Corp.
Filing Date: 2025-11-25
Form: 424B3
Chunk 0
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| Prospectus           
 Supplement No. 3     |     | Filed                      
 pursuant to Rule 424(b)(3) |
| (To Prospectus dated 
 November 13, 2025)   |     | Registration               
 Statement No. 333-290562   |

<div align='center'>Northann Corp.</div>

This prospectus supplement
updates, amends and supplements the prospectus dated November 13, 2025 (the “Prospectus”), which forms a part of our Registration
Statement on Form S-1 (Registration No. 333-290562). Capitalized terms used in this prospectus supplement and not otherwise defined herein
have the meanings specified in the Prospectus.

This prospectus supplement
is being filed to update, amend, and supplement the information included in the Prospectus with the information contained in our Current
Report on Form 8-K filed with the SEC on November 24, 2025, and our Preliminary Proxy Statement on Schedule 14A filed with the SEC on
November 24, 2025, both of which are set forth below.

This prospectus supplement
is not complete without the Prospectus. This prospectus supplement should be read in conjunction with the Prospectus, which is to be delivered
with this prospectus supplement, and is qualified by reference thereto, except to the extent that the information in this prospectus supplement
updates or supersedes the information contained in the Prospectus. Please keep this prospectus supplement with your Prospectus for future
reference.

Our common stock is traded
on NYSE American under the symbol “NCL.” On November 24, 2025, the last reported sale price of our common stock was $0.3981
per share.

Investing in shares of our Ordinary Shares involves risks that are described in the “Risk Factors” section beginning on page 16 of the Prospectus.

Neither the U.S. Securities
and Exchange Commission nor any state securities commission has approved or disapproved of the securities to be issued under the Prospectus
or determined if the Prospectus or this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal
offense.

<div align='center'>The date of this prospectus supplement is November 25, 2025.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of