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 September 2026

Commission File Number: 001-40301

Infobird Co., Ltd

(Registrant’s Name)

Room 706, 7/F, Low Block, Grand Millennium Plaza,

181 Queen’s Road Central, Central, Hong Kong

(Address of Principal Executive Offices)

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

Form 20-F ☒ Form 40-F ☐

When used in this Form 6-K, unless otherwise indicated, the terms “the Company,” “Infobird,” “we,” “us” and “our” refer to Infobird Co., Ltd and its subsidiaries.

Other Information

Attached hereto as Exhibit 99.1 are the unaudited interim condensed consolidated financial statements of the Company as of June 30, 2026 and for the six months ended June 30, 2026 and 2025; and attached hereto as Exhibit 99.2 is the management’s discussion and analysis of financial condition and results of operations of the Company.

Exhibits

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.