Spark I Acquisition Corp. Class A Ordinary Share

ZincFive, Inc. and Spark I Acquisition Corporation announced the public filing of a registration statement on Form S-4 with the U.S. Securities and Exchange Commission in connection with their previously announced proposed business combination. The Registration Statement was filed on September 30, 2026, under File No. 333-299215, and includes a preliminary proxy statement and prospectus relating to the securities to be issued to Spark I's and ZincFive's shareholders. The Business Combination remains subject to approval by SPKL shareholders, the Registration Statement being declared effective by the SEC, and other customary closing conditions. Following completion, the combined company is expected to operate under the name ZincFive, Inc., with securities expected to trade on Nasdaq subject to exchange listing approval, and the deal is expected to close in the fourth quarter of 2026. ZincFive is a leader in immediate power solutions for mission-critical infrastructure based on nickel-zinc battery technology, while Spark I is a special purpose acquisition company formed by SparkLabs Group.

Spark I Acquisition Corporation announced it has agreed to a one-time deposit of $0.10 per public share into its trust account, tied to the extension of its deadline to complete an initial business combination from September 29, 2026 to March 29, 2027. The additional contribution will be made on Monday, October 5, 2026, and will raise the per-share price payable to public shareholders in any redemptions connected to the extraordinary general meeting held to approve the proposed business combination with ZincFive, Inc., or in a liquidation, whichever comes first. The deposit comes on top of the monthly trust-account deposits made by the company's sponsor. Public shareholders who already submitted redemption requests to transfer agent Continental Stock Transfer & Trust Company may withdraw them until 5:00 p.m. Eastern time on Friday, October 2, 2026; those who do not withdraw will receive the original redemption price, estimated at approximately $10.92 per share. Spark I Acquisition Corporation is a special purpose acquisition company formed by SparkLabs Group, a global network of startup accelerators and venture capital funds with bases in Korea, the United States, Taiwan, Australia, and Saudi Arabia.