Oceanhawk Acquisition Corp. Announces Closing of Upsized $160,000,000 Initial Public Offering

Oceanhawk Acquisition Corp. (Nasdaq: OHACU) (the “Company”) today announced the closing of its upsized initial public offering of 16,000,000 units. The offering was priced at $10.00 per unit, resulting in aggregate gross proceeds to the Company of $160,000,000. The underwriter has been granted a 45-day option to purchase up to an additional 2,400,000 units offered by the Company to cover over-allotments, if any.

The units began trading on the Nasdaq Stock Market (“Nasdaq”) under the ticker symbol “OHACU” on May 21, 2026. Each unit consists of one Class A ordinary share and one right to receive one-fourth of one Class A ordinary share upon the consummation of an initial business combination. Once the securities comprising the units begin separate trading, the Class A ordinary shares and rights are expected to be listed on Nasdaq under the symbols “OHAC” and “OHACR”, respectively.

The Company, which is led by Chief Executive Officer Ernest Miller, is a blank check company incorporated as a Cayman Islands exempted company whose business purpose is to effect a merger, share exchange, asset acquisition, share purchase, recapitalization, reorganization, or similar business combination with one or more businesses. Mr. Miller has over 25 years of experience in the commodity‑driven energy sector, with a background in financial management, strategic planning and the positioning of complex, capital‑intensive companies. While the Company may pursue an initial business combination in any industry or sector, it intends to focus on high‑potential businesses globally, leveraging the experience and network of the Oceanhawk platform.

The Benchmark Company, LLC acted as the sole book-running manager for the offering.

A registration statement on Form S-1 relating to these securities has been filed with the Securities and Exchange Commission (“SEC”) and became effective on May 20, 2026. This press release shall not constitute an offer to sell or a solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About Oceanhawk Acquisition Corp.

Oceanhawk Acquisition Corp. is a blank check company incorporated as a Cayman Islands exempted company for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, recapitalization, reorganization or similar business combination with one or more businesses. Oceanhawk Acquisition Corp. is sponsored by Oceanhawk Acquisition I Sponsor LLC, an affiliate of Oceanhawk, a private investment firm, and intends to leverage Oceanhawk’s experience, network and operating platform in identifying and evaluating potential business combination opportunities.

Forward-Looking Statements

This press release includes forward-looking statements. Forward-looking statements are statements that are not historical facts. Such forward-looking statements, including the Company’s search for an initial business combination, are subject to risks and uncertainties, many of which are beyond the control of the Company, including those set forth in the “Risk Factors” section of the Company’s registration statement and final prospectus for the offering filed with the SEC, any of which could cause actual results to differ from such forward-looking statements. The Company expressly disclaims any obligations or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in the Company’s expectations with respect thereto or any change in events, conditions or circumstances on which any statement is based, except as required by law.

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