Zentek (ZTEK) unit reports near-theoretical battery anode performance

Rhea-AI Filing Summary

Zentek Ltd. filed a Form 6-K as a foreign private issuer, signed by its Chief Financial Officer, to furnish a new corporate update. The filing attaches a press release dated December 17, 2025, describing that Zentek’s subsidiary Albany Graphite Corp. achieved near-theoretical anode performance in independent battery suitability testing. This suggests the company is highlighting technical progress related to the potential use of its graphite materials in battery applications, though specific performance metrics or commercial impacts are not detailed in this excerpt.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

OF THE SECURITIES EXCHANGE ACT OF 1934

For the month of December 2025

Commission File Number: 001-41310

ZENTEK LTD.

(Registrant)

24 Corporate Court

Guelph, Ontario N1G 5G5 Canada

(Address of Principal Executive Offices)

Indicate by check mark whether the Registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  ☐            Form 40-F  ☒

Indicate by check mark if the Registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the Registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	ZENTEK LTD.
	(Registrant)
Date: December 17, 2025	By	/s/ Wendy Ford
		Wendy Ford
		Chief Financial Officer

EXHIBIT INDEX

Exhibit		Description of Exhibit
99.1		Press Release dated December 17, 2025 - Zentek Subsidiary Albany Graphite Corp. Achieves Near-Theoretical Anode Performance in Battery Suitability Independent Testing

FAQ

What does Zentek Ltd. (ZTEK) report in this Form 6-K?

The Form 6-K from Zentek Ltd. furnishes a press release dated December 17, 2025, highlighting that its subsidiary Albany Graphite Corp. achieved near-theoretical anode performance in independent battery suitability testing.

Which Zentek (ZTEK) subsidiary is mentioned in the December 2025 6-K?

The filing mentions Albany Graphite Corp., a subsidiary of Zentek Ltd., which is reported to have achieved near-theoretical anode performance in independent battery suitability testing.

What technical milestone is referenced for Zentek (ZTEK) in this 6-K?

The attached press release states that Zentek’s subsidiary Albany Graphite Corp. achieved near-theoretical anode performance in independent testing assessing battery suitability.

Is there a press release attached to Zentek’s (ZTEK) December 2025 Form 6-K?

Yes. Exhibit 99.1 to the Form 6-K is a press release dated December 17, 2025 titled “Zentek Subsidiary Albany Graphite Corp. Achieves Near-Theoretical Anode Performance in Battery Suitability Independent Testing.”

Who signed Zentek’s (ZTEK) December 2025 Form 6-K?

The Form 6-K is signed on behalf of Zentek Ltd. by Wendy Ford, who is identified as the company’s Chief Financial Officer.

What is the main focus of the exhibit in Zentek’s (ZTEK) 6-K filing?

The main focus of Exhibit 99.1 is a press release describing near-theoretical anode performance achieved by Zentek’s subsidiary Albany Graphite Corp. in independent battery suitability testing.