Harbour Island Acquisition Corp. I filed Amendment No. 2 to its Form S-1 registration statement with the U.S. Securities and Exchange Commission on November 12, 2026, covering a proposed initial public offering of 8,000,000 units at $10.00 per unit for a total offering size of $80,000,000.

Key Highlights

  • Offering size: 8,000,000 units priced at $10.00 each, representing a total offering of $80,000,000, according to the filing.
  • Unit composition: Each unit consists of one Class A ordinary share and one whole redeemable warrant exercisable at $11.50 per share, as described in the prospectus.
  • Over-allotment option: The underwriters have a 45-day option to purchase up to an additional 1,200,000 units to cover over-allotments.
  • Sponsor private placement: Harbour Island Acquisition Sponsor LLC has committed to purchase 310,000 private placement units at $10.00 per unit, for an aggregate purchase price of $3,100,000, closing simultaneously with the offering.
  • Founder shares: The sponsor purchased 3,833,333 Class B ordinary shares for an aggregate purchase price of $25,000, or approximately $0.007 per share; up to 500,000 of those shares are subject to surrender depending on the extent of the over-allotment option exercise.
  • Redemption limit: Public shareholders holding more than 15% of shares sold in the offering are restricted from redeeming shares above that threshold without the company's prior consent when a shareholder vote is held, the filing states.
  • Blank check company: The registrant is incorporated as a Cayman Islands exempted company formed for the purpose of effecting an initial business combination; no target has been selected, according to the filing.

Harbour Island Acquisition Corp. I: S-1 Amendment Details and Offering Terms

Harbour Island Acquisition Corp. I, a blank check company incorporated in the Cayman Islands, filed Amendment No. 2 to its Form S-1 registration statement on November 12, 2026, under Registration No. 333-298827. According to the filing, the company was formed solely for the purpose of effecting a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization, or similar business combination. The registrant disclosed that it has not selected any business combination target and has not initiated any substantive discussions, directly or indirectly, with any potential target.

The prospectus describes an offering of 8,000,000 units at $10.00 per unit, each consisting of one Class A ordinary share and one whole redeemable warrant. Each warrant entitles the holder to purchase one Class A ordinary share at $11.50 per share, subject to adjustment. The filing states that warrants will become exercisable on the later of one year after the closing of the offering or the completion of the initial business combination, and will expire five years after the completion of that combination, or earlier upon redemption or liquidation. The underwriters hold a 45-day option to purchase up to 1,200,000 additional units to cover over-allotments.

The filing also describes the trust account arrangement, under which proceeds will be held for public shareholders. The registrant disclosed that proceeds placed in the trust account and interest earned on them shall not be used to pay any excise tax or fees that may be levied on redemptions or share buybacks, including any excise tax under the Inflation Reduction Act of 2022. The registrant identified itself as a non-accelerated filer, smaller reporting company, and emerging growth company. McAndrew Rudisill is identified as Chief Executive Officer, with principal executive offices located at 2875 South Ocean Boulevard, Palm Beach, FL 33480.

What Was Disclosed

Harbour Island Acquisition Corp. I filed Amendment No. 2 to its S-1 on November 12, 2026, disclosing terms of an $80,000,000 IPO of 8,000,000 units, sponsor private placement commitments, founder share details, and trust account and redemption provisions for a proposed blank check company.