Zentek Ltd.

Zentek Ltd. announced the issuance of U.S. Patent No. 12,616,206, covering the core graphene-based technology behind its ZenGUARD™ platform. This patent, which includes a 327-day term extension, strengthens Zentek's intellectual property protection and complements its existing Canadian patent. The company is exploring entry into the significant U.S. air filtration market, valued at approximately US$5.3 billion in 2025, in collaboration with its U.S. manufacturing partner, Quality Filters Inc.

Zentek Ltd. announced the closing of its fully subscribed brokered Listed Issuer Financing Exemption (LIFE) offering, raising gross proceeds of C$18,000,000. The offering involved the sale of 18,000,000 units at C$1.00 each, with each unit comprising one common share and one common share purchase warrant. The company intends to use the net proceeds to advance the Albany Graphite Project, commercialize its ZenGUARD platform, meet payment obligations, and for general working capital.

Zentek Ltd. filed a Form 6-K with the U.S. Securities and Exchange Commission on April 28, 2026. This report of a foreign private issuer indicates that the company files its annual reports under Form 40-F. The filing is a routine submission and does not contain specific new material information.