SEC Filing Document

Company: Berto Acquisition Corp. II
Ticker: GUAC
CIK: 2081515
Filing Type: S-1
Document Type: S-1
Date Filed: 2026-04-27
Accession Number: 0001829126-26-003952
Exchange: 
SIC Code: 6770
SIC Description: Blank Checks
URL: https://www.sec.gov/Archives/edgar/data/2081515/000182912626003952/bertoacquisition2_s1.htm

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determining whether to require all holders to exercise their warrants on a “cashless basis,” the management will consider, among other factors, the Company’s cash position, the number of warrants that are outstanding and the dilutive effect on the shareholders of issuing the maximum number of ordinary shares issuable upon the exercise of the warrants. Note 8 — Subsequent Events The Company evaluated subsequent events and transactions that occurred after December 31, 2025, the balance sheet date, up to the date the financial statements were available to be issued. Based upon this review, the Company did not identify any subsequent events that would have required adjustment to or disclosure in the financial statements, except as noted below. Subsequent to December 31, 2025, the Company borrowed an additional amount of approximately $6,000 under the Note, resulting in an outstanding balance of approximately $22,000. Table of Contents 25,000,000 Units Berto Acquisition Corp. II

PRELIMINARY PROSPECTUS

Sole Book-Running Manager

Needham & Company

Until [●], 2026 (25 days after the date of this prospectus), all dealers that buy, sell or trade our units, public shares or public warrants, whether or not participating in this offering, may be required to deliver a prospectus. This is in addition to the dealers’ obligation to deliver a prospectus when acting as underwriters and with respect to their unsold allotments or subscriptions.

You should rely only on the information contained in this prospectus. We have not, and the underwriters have not, authorized anyone to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the underwriters are not, making an offer to sell securities in any jurisdiction where the offer or sale is not permitted. You should not assume that the information contained in this prospectus is accurate as of any date other than the date on the front of this prospectus.

No dealer, salesperson or any other person is authorized to give any information or make any representations in connection with this offering other than those contained in this prospectus and, if given or made, the information or representations must not be relied upon as having been authorized by us. This prospectus does not constitute an offer to sell or a solicitation of an offer to buy any security other than the securities offered by this prospectus, or an offer to sell or a solicitation of an offer to buy any securities by anyone in any jurisdiction in which the offer or solicitation is not authorized or is unlawful.

Table of Contents

PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 13. Other Expenses of Issuance and Distribution.

The estimated expenses payable by us in connection with the offering described in this registration statement (other than the underwriting discount and commissions) will be as follows:

Legal fees and expenses $	400,000

Printing and engraving expenses 15,000

Accounting fees and expenses 66,000

SEC/FINRA Expenses 55,500

Travel and road show expense 60,000

Nasdaq listing and filing fees 81,000

Miscellaneous 49,375

Total $	726,875

Item 14. Indemnification of Directors and Officers.

Cayman Islands law does not limit the extent to which a company’s memorandum and articles of association may provide for indemnification of officers and directors, except to the extent any such provision may be held by the Cayman Islands courts to be contrary to public policy, such as to provide indemnification against willful default, willful neglect, actual fraud or the consequences of committing a crime. Our articles will provide for indemnification of our officers and directors to the maximum extent permitted by law, including for any liability incurred in their capacities as such, except through their own actual fraud, willful default or willful neglect. We will purchase a policy of directors’ and officers’ liability insurance that insures our officers and directors against the cost of defense, settlement or payment of a judgment in some circumstances and insures us against our obligations to indemnify our officers and directors.

Our officers and directors have agreed to waive any right, title, interest or claim of any kind in or to any monies in the trust account, and have agreed to waive any right, title, interest or claim of any kind they may have in the future as a result of, or arising out of, any services provided to us and will not seek recourse against the trust account for any reason whatsoever. Accordingly, any indemnification provided will only be able to be satisfied by us if (i) we have sufficient funds outside of the trust account or (ii) we consummate an initial business combination.

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers or persons controlling us pursuant to the foregoing provisions, we have been informed that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.

Item 15. Recent Sales of Unregistered Securities.

In December 2025, Berto Acquisition Sponsor II LLC, our sponsor, and sponsor affiliates purchased an aggregate of 6,837,500 of our founder shares in exchange for a capital contribution of $23,782.61, and Meteora Capital LLC (not affiliated with the sponsor) purchased an aggregate of 300,000 of our founder shares in exchange for a capital contribution of $1,043.48, each at an average purchase price of approximately $0.003 per share. Such securities were issued in connection with our organization pursuant to the exemption from registration contained in Section 4(a)(2) of the Securities Act. The number of founder shares outstanding was determined based on the expectation that the total size of this offering would be a maximum of 28,750,000 units if the underwriters’ over-allotment option is exercised in full and therefore that such founder shares would represent 20% of the outstanding shares after this offering. Up to 937,500 of the founder shares held by our sponsor and sponsor affiliates will be forfeited depending on the extent to which the underwriters’ over-allotment option is exercised.

Table of Contents

Our sponsor, sponsor affiliates, Oanh Truong and Meteora are each an accredited investor for purposes of Rule 501 of Regulation D. Each of the equity holders in our sponsor is an accredited investor under Rule 501 of Regulation D. The sole business of our sponsor is to act as the company’s sponsor in connection with this offering. The limited liability company agreement of our sponsor provides that its membership interests may only be transferred to our officers or directors or other persons affiliated with our sponsor, or in connection with estate planning transfers.

Our sponsor has committed to purchase an aggregate of 3,500,000 private placement warrants (including if the underwriters’ over-allotment option is exercised in full), at a price of $1.00 per warrant, for an aggregate purchase price of $3,500,000. The private placement warrants will also be worthless if we do not complete our initial business combination. This purchase will take place on a private placement basis simultaneously with the completion of our initial public offering. This issuance will be made pursuant to the exemption from registration contained in Section 4(a)(2) of the Securities Act.

No underwriting discounts or commissions were or will be paid with respect to such sales.

Item 16. Exhibits and Financial Statement Schedules.

(a)	Exhibits . The following exhibits are being filed herewith:

EXHIBIT INDEX

Exhibit No Description

1.1 Form of Underwriting Agreement.

3.1 Memorandum and Articles of Association.

3.2 Form of Amended and Restated Memorandum and Articles of Association.

4.1 Specimen Unit Certificate.

4.2 Specimen Ordinary Share Certificate.

4.3 Specimen Warrant Certificate.

4.4 Form of Warrant Agreement between Continental Stock Transfer & Trust Company and the Registrant.

5.1* Opinion of White & Case LLP.

5.2* Opinion of Ogier (Cayman) LLP, Cayman Islands counsel to the Registrant.

10.1 Form of Letter Agreement among the Registrant, Berto Acquisition Sponsor II LLC, and Meteora Capital, LLC and each of the officers and directors of the Registrant.

10.2 Form of Investment Management Trust Agreement between Continental Stock Transfer & Trust Company and the Registrant.

10.3 Form of Registration Rights Agreement among the Registrant, Berto Acquisition Sponsor II LLC and the Holders signatory thereto.

10.4 Form of Private Placement Warrants Purchase Agreement between the Registrant and Berto Acquisition Sponsor II LLC.

10.5 Form of Indemnity Agreement.

10.6 Promissory Note issued to Berto Acquisition Sponsor II LLC.

10.7 Securities Subscription Agreement between the Registrant and Berto Acquisition Sponsor II LLC.

10.8 Form of Administrative Services and Indemnity Agreement between the Registrant and Berto Acquisition Sponsor II LLC.

10.9 Securities Subscription Agreement between the Registrant and Harry Lee You

10.10 Securities Subscription Agreement between the Registrant and Robert H You

14.1 Form of Code of Ethics.

23.1 Consent of Frank, Rimerman + Co. LLP.

23.2* Consent of White & Case LLP (included in Exhibit 5.1).

23.3* Consent of Ogier (Cayman) LLP (included in Exhibit 5.2).

24.1 Power of Attorney (included on signature page to the initial filing of this Registration Statement).

99.1 Form of Clawback Policy.