UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 21, 2026

ARC Group Acquisition I Corp

(Exact name of registrant as specified in its charter)

British Virgin Islands 001-43253 N/A

(State or other jurisdiction of

incorporation or organization)

(Commission

File Number)

(I.R.S. Employer

Identification Number)

398 S Mill Avenue, Suite 306, Tempe, AZ 85284

(Address of principal executive offices, including zip code)

(928) 625-0928

(Registrant’s telephone number, including area code)

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

☐ Written communications 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
Units, each consisting of one Class A ordinary share, par value $0.0001 per share, one warrant, and one right to acquire 1/4th of one Class A ordinary share ARCLU The Nasdaq Stock Market LLC
Class A ordinary shares included as part of the Units ARCL The Nasdaq Stock Market LLC
Rights included as part of the Units ARCLR The Nasdaq Stock Market LLC
Warrants, each warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share ARCLW 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 or Rule 12b-2 of the Securities Exchange Act of 1934.

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. ☐

Item 8.01. Other Events

On May 21, 2026, ARC Group Acquisition I Corp (the “Company”) issued a press release, a copy of which is attached as Exhibit 99.1 to this Current Report on Form 8-K, announcing that holders of the Company’s units may elect to separately trade the Class A ordinary shares, warrants and rights included in its units commencing on or about May 28, 2026. Units not separated will continue to trade on NASDAQ under the symbol “ARCLU.”

The Class A ordinary shares, warrants and rights will trade on the NASDAQ Global Market (“NASDAQ”) under the symbols “ARCL,” “ARCLW” and “ARCLR,” respectively.

As previously announced, on May 5, 2026 and May 7, 2026, the Company completed its initial public offering of 12,075,000 units, which includes the full exercise by the underwriters of its over-allotment option.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

EXHIBIT INDEX

Exhibit No. Description
99.1 Press Release dated May 21, 2026
104 Cover Page Interactive Data File (embedded within the inline XBRL Document)

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 hereunto duly authorized.

Dated: May 21, 2026
ARC Group Acquisition I Corp
By: /s/ Datuk Dr. Doris Wong Sing Ee
Name: Datuk Dr. Doris Wong Sing Ee
Title: Chief Executive Officer and Director