

Guelph, Ontario--(Newsfile Corp. - August 28, 2026) - Zentek Ltd. (TSXV: ZEN) (NASDAQ: ZTEK) ("Zentek" or the "Company"), today announces that its common shares will transition from trading on The Nasdaq Capital Market to the OTC Markets Group on Tuesday, September 2, 2026.

Zentek to supply HVAC filters to federal facilities in the National Capital Region as ZenGUARD(TM) Enhanced Air Filters remain available to all federal departments through the Pathway to Commercialization source list Guelph, Ontario--(Newsfile Corp. - August 20, 2026) - Zentek Ltd. (TSXV: ZEN) (NASDAQ: ZTEK) ("Zentek" or the "Company") announces that it has been awarded a Government of Canada standing offer to supply a range of HVAC filtration products, including ZenGUARD™ Enhanced Air Filters, to federal facilities in the National Capital Region.

ZEN-EMI-01 is developed from Albany graphite and preliminary laboratory testing showed that it dissipates electromagnetic energy within the coating rather than reflecting it toward adjacent systems Guelph, Ontario--(Newsfile Corp. - August 17, 2026) - Zentek Ltd. (TSXV: ZEN) (NASDAQ: ZTEK) ("Zentek" or the "Company") has filed a provisional patent application with the United States Patent and Trademark Office covering ZEN-EMI-01, a water-based electromagnetic interference ("EMI") shielding coating produced from purified graphite from the Company's Albany deposit.

Initial capital of US$817 million, after-tax payback of 4.4 years and a 30-year mine life, for the nuclear, defence and allied-nation supply chains the Project targets. Guelph, Ontario--(Newsfile Corp. - August 10, 2026) - Zentek Ltd.

Guelph, Ontario--(Newsfile Corp. - 22 juillet 2026) - Zentek Ltd. (TSXV: ZEN) (NASDAQ: ZTEK) (« Zentek »

Independent Montreal-based investor relations firm to increase Zentek's visibility with qualified investment professionals Guelph, Ontario--(Newsfile Corp. - July 20, 2026) - Zentek Ltd. (TSXV: ZEN) (NASDAQ: ZTEK) ("Zentek" or the "Company") is pleased to announce that it has engaged IMPAQ Capital Inc. ("IMPAQ"), an independent, arm's-length service provider, to deliver investor relations services.

Company-sponsored research coverage to broaden Zentek's visibility with the global investment community Guelph, Ontario--(Newsfile Corp. - July 15, 2026) - Zentek Ltd. (TSXV: ZEN) (NASDAQ: ZTEK) ("Zentek" or the "Company") is pleased to announce that it has engaged Atrium Research Corporation ("Atrium"), a company-sponsored research firm, to provide research coverage of the Company.

Guelph, Ontario--(Newsfile Corp. - July 7, 2026) - Zentek Ltd. (TSXV: ZEN) (NASDAQ: ZTEK) ("Zentek" or the "Company") is pleased to announce that Quality Filters Inc. ("Quality"), its U.S.-based manufacturing and distribution partner headquartered in Robertsdale, Alabama, has successfully completed a validation and qualification program for ZenGUARD™ Enhanced Air Filtration Media and has subsequently placed its first commercial order for 244 rolls to support production of multiple sizes of heating, ventilation and air conditioning ("HVAC") air filters.