Micromem completes first gas-sensor board testing

Testing has moved from the first printed circuit board version to a second design, while portable and fixed-in-place configurations remain in development.

Rhea-AI Filing Summary

Micromem Technologies Inc. is advancing a compact gas-sensing wearable/portable prototype through a collaboration with Canada’s Defence Research and Development Canada and the University of Toronto. The prototype enclosure measures approximately 120 mm × 80 mm × 18 mm. Its intended initial commercial uses are oil-industry and municipal-water-quality testing; the technology is also intended to form a base for wearable military applications being developed for Canada’s Department of National Defence.

The project is developing a battery-powered gas-sensing system using indium arsenide nanowire field-effect transistors. Micromem completed testing of its first printed circuit board version and is progressing on a second version with design improvements. Portable and fixed-in-place configurations are planned, with overcurrent protection and wired or wireless data transmission. A waterproof, more rugged form factor for enhanced oil recovery operations is also being developed.

Filing Explained

Form 6-K is a foreign private issuer’s interim report for furnishing material information published in its home market; this report is incorporated by reference into Micromem’s Form F-3 registration statement and prospectus from October 26, 2026.

Key Figures

Prototype enclosure length: approximately 120 mm Prototype enclosure width: approximately 80 mm Prototype enclosure thickness: approximately 18 mm +1 more

4 metrics

Prototype enclosure length approximately 120 mm Prototype dimensions

Prototype enclosure width approximately 80 mm Prototype dimensions

Prototype enclosure thickness approximately 18 mm Prototype dimensions

Shares issued 679,220,590 shares Company information in the release

Key Terms

indium arsenide (InAs) nanowire field-effect transistors (FETs), volatile organic compounds, overcurrent protection, printed circuit board (PCB)

4 terms

indium arsenide (InAs) nanowire field-effect transistors (FETs) technical

"incorporating indium arsenide (InAs) nanowire field-effect transistors (FETs)"

volatile organic compounds technical

"detect target gases and volatile organic compounds"

Volatile organic compounds (VOCs) are carbon-based chemicals that easily evaporate into the air at room temperature, like the strong-smelling fumes from paint or gasoline. Investors should care because VOCs can trigger health and environmental regulations, cleanup obligations, fines, and restrictions that raise costs, limit operations or reduce property values; think of them as invisible liabilities that can affect a company’s finances and reputation.

overcurrent protection technical

"both configurations will incorporate overcurrent protection"

printed circuit board (PCB) technical

"completed testing of its first printed circuit board (PCB) version"

A printed circuit board (PCB) is a flat board that mechanically supports and electrically connects electronic components using thin copper traces, like the roads that link parts together on a tiny map. Investors care because PCBs are a fundamental part of nearly all electronic products, so demand, manufacturing capacity, supply-chain bottlenecks, or cost changes for PCBs can directly affect production, margins and the competitive position of companies that build or rely on electronic devices.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What are the dimensions of Micromem (MMTIF)’s gas-sensing prototype?

The prototype enclosure measures approximately 120 mm × 80 mm × 18 mm.

What gas-sensing technology is Micromem (MMTIF) developing?

Micromem is developing a battery-powered system incorporating indium arsenide nanowire field-effect transistors. The system is designed to detect target gases and volatile organic compounds by measuring changes in electrical conductance as gas molecules interact with nanowire surfaces.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/26/2026 - 04:14 PM EDT Accepted by SEC EDGAR 10/26/2026 - 04:13 PM EDT Learn about SEC filing dates

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

October 2026

Commission File Number 0-26005

MICROMEM TECHNOLOGIES INC.

121 Richmond Street West, Suite 602, Toronto, ON M5H 2K1

[Indicate by checkmark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.]

Form 20-F [X]     Form 40-F [  ]

             [Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.]

Yes [  ]     No [X] 

[If "Yes" is marked, indicate below the file number assigned to the registrant in connection with rule 12g3-2(b):        N/A

This report on Form 6-K is hereby incorporated by reference in the registration statement on Form F-3 (Registration No. 333-134309) of Micromem Technologies Inc. and in the prospectus contained therein, and this report on Form 6-K shall be deemed a part of such registration statement from the date on which this report is filed, to the extent not superseded by documents or reports subsequently filed or furnished by Micromem Technologies Inc. under the Securities Act of 1933 or the Securities Exchange Act of 1934.

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.

	MICROMEM TECHNOLOGIES INC.
	By:       /s/ Joseph Fuda
Date: October 26, 2026	Name: Joseph Fuda
	Title:   Chief Executive Officer

Exhibit Index

Exhibit		Description
99.1		News Release dated October 26, 2026

FOR IMMEDIATE RELEASE October 26, 2026

Micromem Technologies Inc. Advances Development of Compact Gas-Sensing Portable Prototype

Toronto, Ontario and New York, New York, October 26, 2026 - Micromem Technologies Inc. ("Micromem" or the "Company") (CSE: MRM, OTCQB: MMTIF) is pleased to provide an update on the development of its compact gas-sensing wearable/portable prototype (the 'Technology"), following the Company's news release dated August 6, 2026. The prototype enclosure shown below illustrates a form factor measuring approximately 120 mm × 80 mm × 18 mm (The "Prototype").

Micromem gas-sensing wearable prototype.

Prototype design highlights a compact form factor intended to support continued sensor-system integration and testing

The Technology is the result of the current collaboration (the "Project") between Micromem, Canada's Defence Research and Development Canada and the University of Toronto to develop a Biological and Chemical weapons detection technology. The Prototype is the intended commercial version that will, initially, have oil industry and municipal water quality testing uses. The Prototype will form the base technology for wearable military applications currently being developed for the Canadian Department of National Defense (the "DND").

The Project aims to advance the development of a portable, battery-powered gas sensing system incorporating indium arsenide (InAs) nanowire field-effect transistors (FETs). The technology is being designed to detect target gases and volatile organic compounds by measuring changes in electrical conductance as gas molecules interact with the nanowire surfaces. There will be two distinct system configurations developed, a portable and fixed in place technology, both configurations will incorporate overcurrent protection to safeguard the sensitive nanowire devices and wireless or wired data transmission capabilities to enable external data logging and analysis. In addition, a form factor that is waterproof and more rugged to meet requirements for enhanced oil recovery operations will be developed.  The Project is intended to advance the technology through continued prototype refinement and validation.

The Technology is focused on integrating the sensing technology, electronics and supporting components into a compact, practical device. Micromem has completed testing of its first printed circuit board (PCB) version and is progressing on a second PCB version that incorporates design improvements.

The Company will provide further updates.

About Micromem.

Micromem Technologies Inc., publicly traded (OTCQB: MMTIF, CSE: MRM), is a technology company focused on the development and commercialization of advanced sensor solutions based on proprietary nanotechnology platforms. The Company is advancing high-sensitivity nanowire-based sensing technologies for applications in defense, industrial safety, environmental monitoring, energy, healthcare, and other markets. Through collaborations with government and academic institutions, including Canada's Defence Research and Development Canada (DRDC) and the University of Toronto, Micromem is developing next-generation sensor systems designed to deliver enhanced detection capabilities, artificial intelligence-enabled analytics, and scalable commercial applications. Visit www.micromeminc.com.

Safe Harbor Statement.

This press release contains forward-looking statements. Such forward-looking statements are subject to a number of risks, assumptions and uncertainties that could cause the Company's actual results to differ materially from those projected in such forward-looking statements. In particular, factors that could cause actual results to differ materially from those in forward looking statements include: our inability to obtain additional financing on acceptable terms; risk that our products and services will not gain widespread market acceptance; continued consumer adoption of digital technology; inability to compete with others who provide comparable products; the failure of our technology; the infringement of our technology with proprietary rights of third parties; inability to respond to consumer and technological demands; inability to replace significant customers; seasonal nature of our business; and other risks detailed in our filings with the Securities and Exchange Commission. Forward-looking statements speak only as of the date made and are not guarantees of future performance. We undertake no obligation to publicly update or revise any forward-looking statements. When used in this document, the words "believe," "expect," "anticipate," "estimate," "project," "plan," "should," "intend," "may," "will," "would," "potential," and similar expressions may be used to identify forward-looking statements.

The CSE or any other securities regulatory authority has not reviewed and does not accept responsibility for the adequacy or accuracy of this press release that has been prepared by management.

###

Listing: OTCQB - Symbol: MMTIF and CSE - Symbol: MRM

Shares issued: 679,220,590

SEC File No: 0-26005

Investor Contact:  Joseph Fuda, info@micromeminc.com; Tel. 416-364-2023 Subscribe to receive News Releases by Email on our website's home page.  www.micromeminc.com

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 EXHIBIT 99.1 7.9 KB