Common Contracts

2 similar Securities Subscription Agreement contracts by Harbour Island Acquisition Corp. I

HARBOUR ISLAND ACQUISITION CORP. I Palm Beach, FL 33480
Securities Subscription Agreement • September 9th, 2026 • Harbour Island Acquisition Corp. I • Blank checks • New York

Harbour Island Acquisition Corp. I, a Cayman Islands exempted company (the “Company”), is pleased to accept the offer Harbour Island Acquisition Sponsor LLC, a Delaware limited liability company, (the “Subscriber” or “you”) has made to subscribe for 5,750,000 Class B ordinary shares of the Company (the “Shares”), $0.0001 par value per share (the “Class B Ordinary Shares”), up to 750,000 of which are subject to complete or partial forfeiture by you if the underwriters of the Company’s initial public offering (“IPO”) of units (“Units”) do not fully exercise their over-allotment option (the “Over-allotment Option”). For the purposes of this Agreement, references to “Ordinary Shares” are to, collectively, the Class B Ordinary Shares and the Company’s Class A ordinary shares, $0.0001 par value per share (the “Class A Ordinary Shares”). Pursuant to the Company’s memorandum and articles of association (as may be amended, the “Articles”), Class B Ordinary Shares will convert into Class A Ordin

HARBOUR ISLAND ACQUISITION CORP. I Palm Beach, FL 33480
Securities Subscription Agreement • September 9th, 2026 • Harbour Island Acquisition Corp. I • Blank checks • New York

The Company and the Subscriber, hereby intend to amend and restate the Original Subscription Agreement, to be effective as of the date of hereof, to correct the number of Shares purchased by Subscriber from 5,750,000 shares of the Company’s Class B ordinary shares to 3,833,333 Class B ordinary shares, up to 500,000 of which are subject to forfeiture by you to the extent that the underwriters of the IPO of Units of the Company do not fully exercise their Over-allotment Option.