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

February 4, 2026
Date of Report (Date of earliest event reported)

Iris Acquisition Corp II

(Exact name of Registrant as specified in its charter)

Registrant’s telephone number, including area code:  +971-4-3966949

N/A
(Former name or former address, if changed since last report)

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:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

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 February 4, 2026, Iris Acquisition Corp II (the “Company”) consummated its initial public offering (the “IPO”), which consisted of 16,850,000 units (including 1,850,000 units issued pursuant to the underwriter’s partial exercise of the over-allotment option) (the “Units”). Each Unit consists of one Class A ordinary share, $0.0001 par value (“Class A Ordinary Share”) and one-half of one redeemable warrant of the Company (each, a “Warrant”), with each whole Warrant entitling the holder thereof to purchase one Class A Ordinary Share for $11.50 per share (subject to adjustment). The Units were sold at an offering price of $10.00 per Unit, generating gross proceeds of $168,500,000.

As previously disclosed, simultaneously with the closing of the IPO, the Company consummated a private placement (the “Private Placement”) of an aggregate of 438,000 units (the “Private Units”), comprised of 251,000 private placement units to the Sponsor, at a price of $10.00 per Private Unit, and 187,000 private placement units to the Underwriter, generating total proceeds of $4,380,000. Each Private Unit consists of one Class A Ordinary Share and one-half of one redeemable Warrant, with each whole Warrant entitling the holder thereof to purchase one Class A Ordinary Share for $11.50 per share (subject to adjustment).

In connection with the closing of the IPO, the Underwriter waived its right to any further exercise of the remainder of the over-allotment option and 133,333 Class B Ordinary Shares were forfeited by the sponsor.

An audited balance sheet reflecting receipt of the proceeds upon consummation of the IPO and the Private Placement (including the Over-Allotment Units) is included as Exhibit 99.1 to this Current Report on Form 8-K.

Item 9.01. Financial Statements and 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 hereunto duly authorized.