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 August 2025

Commission File Number: 001-41674

Shengfeng Development Limited

Shengfeng Building, No. 478 Fuxin East Road

Jin’an District, Fuzhou City

Fujian Province, People’s Republic of China, 350001

(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

Shengfeng Development Limited is furnishing its unaudited condensed consolidated financial statements and footnotes for the six months ended June 30, 2025 and 2024. The unaudited condensed consolidated financial statements and notes are attached as Exhibit 99.1 to this report of foreign private issuer on Form 6-K, and Management’s Discussion and Analysis of Financial Condition and Results of Operations for the six months ended June 30, 2025 is attached as Exhibit 99.2 to this report of foreign private issuer on Form 6-K.

On August 27, 2025, the Company issued a press release announcing its unaudited financial results for the six months ended June 30, 2025 and 2024, a copy of which press release is attached as Exhibit 99.3 to this report of foreign private issuer on Form 6-K.

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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.

| Shengfeng Development Limited
Date: August 27, 2025 | By: | /s/ Yongxu Liu
| Name: | Yongxu Liu
| Title: | Chief Executive Officer, President, Director, and Chairman (Principal Executive Officer)

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EXHIBIT INDEX

Exhibit No. |  | Description
99.1 |  | Unaudited Condensed Consolidated Financial Statements and Notes of Shengfeng Development Limited for the Six Months Ended June 30, 2025 and 2024
99.2 |  | Management’s Discussion and Analysis of Financial Condition and Results of Operations
99.3 |  | Press Release, dated August 27, 2025
101.INS |  | Inline XBRL Instance Document
101.SCH |  | Inline XBRL Taxonomy Extension Schema Document
101.CAL |  | Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF |  | Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB |  | Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE |  | Inline XBRL Taxonomy Extension Presentation Linkbase Document
104 |  | Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

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