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): September 30, 2025

AA Mission Acquisition Corp. II

(Exact name of registrant as specified in its charter)

21 Waterway Avenue, STE 300 #9733

The Woodlands, TX 77380

(Address of principal executive offices, including zip code)

Registrant’s telephone number, including area code 832-336-8887

Not Applicable
(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 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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 1.01. Entry into a Material Definitive Agreement.

On October 2, 2025, AA Mission Acquisition Corp. II (the “Company”) consummated its initial public offering (“IPO”) of 10,000,000 units (the “Units”) at $10.00 per Unit, generating gross proceeds to the Company of $100,000,000.  Each Unit consists of one Class A ordinary share, par value $0.0001 per share (the “Ordinary Shares”), and one-half of one redeemable warrant (the “Warrants”), with each whole Warrant entitling the holder to purchase one Ordinary Share at a price of $11.50 per share.  The Units began trading on the New York Stock Exchange (“NYSE”) under the symbol “YCY.U” on October 1, 2025. The Company granted the underwriters a 45-day option to purchase up to an additional 1,500,000 Units to cover over-allotments, if any. 

In connection with the IPO, the Company entered into the following agreements, forms of which were previously filed as exhibits to the Company’s Registration Statement on Form S-1 (File No. 333-289768) for the IPO, initially filed with the U.S. Securities and Exchange Commission (the “Commission”) on August 21, 2025, as amended (the “Registration Statement”):

Item 3.02. Unregistered Sales of Equity Securities.

Simultaneously with the closing of the IPO on October 2, 2025, pursuant to the Private Placement Unit Purchase Agreement, the Company completed the private sale of 334,000 units (the “Private Placement Units”) to the Sponsor at a purchase price of $10.00 per Private Placement Unit, generating gross proceeds to the Company of $3,340,000. The Private Placement Units are identical to the Units sold in the IPO, except as described in the Registration Statement. No underwriting discounts or commissions were paid with respect to such sale. The issuance of the Private Placement Units was made pursuant to the exemption from registration contained in Section 4(a)(2) of the Securities Act of 1933, as amended.

Item 5.03. Amendments to Memorandum and Articles of Association.

On September 30, 2025 and in connection with the IPO, the Company adopted its Amended and Restated Memorandum and Articles of Association. The Amended and Restated Memorandum and Articles of Association are filed herewith as Exhibit 3.1 and is incorporated by reference herein.

Item 8.01. Other Events.

A total of $100,250,000 of the proceeds from the IPO and the sale of the Private Placement Units were placed in a U.S.-based trust account maintained by Continental Stock Transfer & Trust Company, acting as trustee. Except with respect to interest earned on the funds in the trust account that may be released to the Company to pay its taxes and up to $100,000 of interest to pay dissolution expenses, the funds held in the trust account will not be released until the earliest of (i) the completion of the Company’s initial business combination, (ii) the redemption of the Company’s Ordinary Shares included in the Units sold in the IPO (the “public shares”) if it is unable to complete its initial business combination within 18 months from the closing of the IPO (or up to 24 months if the Company extends the period of time to consummate its initial business combination), subject to applicable law, and (iii) the redemption of the Company’s public shares properly submitted in connection with a shareholder vote to amend the Company’s Amended and Restated Memorandum and Articles of Association to modify the substance or timing of its obligation to redeem 100% of the Company’s public shares if it has not consummated an initial business combination within 18 months from the closing of the IPO (or up to 24 months if the Company extends the period of time to consummate its initial business combination) or with respect to any other material provisions relating to shareholders’ rights or pre-initial business combination activity.

On September 30, 2025, the Company issued a press release announcing the pricing of the IPO, a copy of which is attached as Exhibit 99.1 to this Current Report on Form 8-K.

On October 2, 2025, the Company issued a press release announcing the closing of the IPO, a copy of which is attached as Exhibit 99.2 to this Current Report on Form 8-K.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

EXHIBIT INDEX

SIGNATURE

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: October 6, 2025