SEC Filing Document

Company: Berto Acquisition Corp. II
Ticker: GUAC
CIK: 2081515
Filing Type: 424B4
Document Type: 424B4
Date Filed: 2026-05-18
Accession Number: 0001829126-26-005386
Exchange: 
SIC Code: 6770
SIC Description: Blank Checks
URL: https://www.sec.gov/Archives/edgar/data/2081515/000182912626005386/bertoacquisition2_424b4.htm

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York Stock Exchange under the symbol “GTYH”. On July 7, 2022, GTY was acquired by a private investment firm, GI Partners, for a purchase price of approximately $6.30 per share, or approximately $363 million in aggregate. Bitcoin Infrastructure Acquisition Corp. Ltd. Bitcoin Infrastructure Acquisition Corp. Ltd. (“BIXI”) is a blank check company formed for substantially similar purposes as our company. BIXI completed its initial public offering in December 2025, in which it raised gross proceeds of approximately $220,000,000. BIXI is sponsored by an affiliate of Meteora Capital; Mr. Mittal is a director of BIXI. BIXI is searching for a business combination target. BIXI’s units, Class A ordinary shares, and warrants trade on Nasdaq under the symbols “BIXIU”, “BIXI”, and “BIXIW”, respectively. On May 8, 2026, the closing sale prices of BIXIU, BIXI and BIXIW were $10.06, $9.96, and $0.25, respectively. Table of Contents CSLM Digital Asset Acquisition Corp. III, Ltd.

CSLM Digital Asset Acquisition Corp. III Ltd. is a blank check company formed for substantially similar purposes as our company. CSLM III completed its initial public offering in August 2025, in which it raised gross proceeds of approximately $230,000,000. CSLM III is sponsored by CSLM Acquisition Sponsor II, which is managed by Mr. Mittal and another director. Mr. Mittal is the Co-Chief Executive Officer and Chief Financial Officer of CSLM III. On December 2, 2025, CSLM III and First Digital Group Ltd., a leading stablecoin and digital asset infrastructure provider (“First Digital”), issued a joint press release announcing that they have entered into a non-binding letter of intent for a potential business combination. CSLM III’s units, Class A ordinary shares, and warrants trade on Nasdaq under the symbols “KOYNU”, “KOYN”, and “KOYNW”, respectively. On May 8, 2026, the closing sale prices of KOYNU, KOYN and KOYNW were $10.19, $10.12, and $0.25, respectively.

Invest Acquisition Corp

Invest Acquisition Corp. (f.k.a Investcorp Europe Acquisition Corp I) is a blank check company formed for substantially similar purposes as our company. Investcorp completed its initial public offering in December 2021, in which it raised gross proceeds of approximately $345,000,000. Investcorp obtained shareholder approval to extend date by which it has to complete a business combination five times, to up to December 17, 2027, and in connection therewith, holders of 15,494,333 public shares, 7,460,372 public shares, 2,159,610 public shares, 7,360,165 public shares, and 18,226 public shares, for a total of approximately 94.2% of the public shares issued in Investcorp’s initial public offering. Investcorp entered into definitive agreements for a proposed initial business combination with OpSec Group in April 2023, which transaction was terminated by Investcorp in September 2024. In connection with such termination, Investcorp received a termination payment of $30 million, and in November 2024 distributed the net amount of such termination payment, after satisfaction of certain liabilities, pro rata to all holders of Investcorp Class A ordinary shares, in an amount equal to $0.60 per share. In December 2024, Samara Special Opportunities, a Cayman Island exempted company, acquired (directly and indirectly) 70% of the founder shares and private placement warrants of Investcorp from its previous sponsor, and Vikas Mittal became the Chief Executive Officer and Chief Financial Officer and a director of Investcorp. Investcorp’s securities were delisted from Nasdaq in December 2024 by reason of the failure of Investcorp to complete its initial business combination within 36 months of the effectiveness of its initial public offering registration statement. Investcorp is searching for a business combination target. Investcorp’s Class A ordinary shares, units, and warrants are traded on the OTC Markets under the symbols “IVCUF”, “IVCBF”, and “IVCWF”, respectively. As of April 24, 2026, the latest quoted prices of IVCUF, IVCBF and IVCWF were $11.01, $6.00 and $0.0001, respectively.

Investcorp AI Acquisition Corp.

Investcorp AI Acquisition Corp. (f.k.a. Investcorp India Acquisition Corp.) is a blank check company formed for substantially similar purposes as our company. Investcorp AI completed its initial public offering in May 2022, in which it raised gross proceeds of approximately $258,750,000. Investcorp AI obtained shareholder approval to extend date by which it has to complete a business combination three times, to up to May 12, 2027, and in connection therewith, holders of 16,085,554 public shares, 8,314,006 public shares, and 1,449,359 public shares, for a total of approximately 99.9% of the public shares issued in Investcorp AI’s initial public offering. Investcorp AI’s securities were delisted from Nasdaq in April 2025 by reason of the failure of Investcorp AI to complete its initial business combination within 36 months of the effectiveness of its initial public offering registration statement. In August 2025, Samara Special Opportunities, a Cayman Island exempted company, acquired (directly and indirectly) 70% of the founder shares and private placement warrants of Investcorp AI from its previous sponsor, and Vikas Mittal became the Principal Executive Officer and a director of Investcorp AI. On April 8, 2026, Investcorp AI entered into a business combination agreement with Blue Finance Technology Holding Limited, an artificial intelligence-powered digital finance platform providing lending, banking, and financial services. Investcorp AI’s Class A ordinary shares, units, and warrants are traded on the OTC Markets—Pink Sheets under the symbols “IVCAU”, “IVCA”, and “IVCAW”, respectively. As of May 8, 2026, the latest quoted prices of IVCAU, IVCA, and IVCAW were $11.86, $12.00, and $0.02, respectively.

Table of Contents

Other Merger & Acquisition and Capital Markets Experience

In addition to the prior SPAC experience above, Harry You, our founder, has executed several hundred investments and acquisitions as a managing director in Investment Banking Division of Morgan Stanley and two other firms from 1989 to 2001, Chief Financial Officer at Accenture from 2001 to 2004 and Oracle from 2004 to 2005, as well as EVP in the Office of the Chairman in charge of Merger & Acquisition and Corporate Development at EMC from 2008 to 2016. Notably, Mr. You helped architect the $67 billion buyout of EMC by Dell Technologies Inc., which has been one of the largest technology acquisitions and leveraged buyout. Recently, as a member of the executive committee of the board of Broadcom, Mr. You provided input on the $92 billion acquisition of VMware LLC by Broadcom.

Harry You has raised over $2 billion in capital relative to several SPACs and deSPAC transactions and as a banker, has helped garner and execute several dozen initial public offerings of companies including the United Parcel Service, Inc., Galileo, and Perot Systems Corporation. Harry You was Chief Financial Officer for Accenture in 2001 during its successful initial public offering.

Our management team provides a unique set of capabilities and understanding of the critical success factors for expeditious and efficient execution of a SPAC business combination. Our management team believes this experience can guide us in effectively evaluating potential opportunities and executing a transaction quickly and prudently.

With respect to the foregoing experiences of our management team, past performance is not a guarantee (i) that we will be able to identify a suitable candidate for our initial business combination or (ii) of success with respect to any business combination we may consummate. You should not rely on the historical record and performance of the members of our management team as indicative of the future performance of an investment in us or the financial returns we may, or are likely to, generate going forward. For more information on the experience and background of our management team, see the section entitled “Management.”

Initial Business Combination

We are not presently engaged in, and we will not engage in, any operations for an indefinite period of time following this offering. We intend to effectuate our initial business combination using cash from the proceeds of this offering and the private placement of the private placement warrants, the proceeds of the sale of our shares in connection with our initial business combination (including pursuant to forward purchase agreements or backstop agreements we may enter into following the consummation of this offering), shares issued to the owners of the target, debt issued to bank or other lenders or the owners of the target, other securities issuances or a combination of the foregoing. We may seek to complete our initial business combination with a company or business that may be financially unstable or in its early stages of development or growth, which would subject us to the numerous risks inherent in such companies and businesses.