DFSC 6-K

UNITED STATESSECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of May, 2026.

Commission File Number: 001-41566

DEFSECTechnologies Inc.****(Exact Name of Registrant as Specified in Charter)

80 Hines Rd, Suite 300, Ottawa, Ontario, K2K 2T8(Address of principal executive offices)

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

Form 20-F ☒ Form 40-F ☐

SIGNATURE

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.

EXHIBIT INDEX

EXHIBIT 99.1

DEFSEC Announces Commercial Release of Its Next-Generation Lightning™ Real-Time Situational Awareness System For Critical Incident Response

OTTAWA, ON, May 6, 2026 /CNW/ - DEFSEC Technologies Inc. (TSXV: DFSC) and (TSXV: DFSC.WT.U) (NASDAQ: DFSC) and (NASDAQ: DFSCW) (DEFSEC or the Company) today announced the commercial release of its Lightning^TM^ real-time situational awareness system for faster, coordinated response within and across responder agencies during critical incidents.

DEFSEC LIGHTNING Next-Generation Real-Time Situational Awareness System for Critical Incident Response (CNW Group/DEFSEC Technologies Inc)

"Following the early adoption and onboarding of our first subscription customer, an Ontario border police agency, we are pleased to announce today the commercial release of DEFSECLightning^TM^ along with a compelling scaled pricing model aligned with public safety mission requirements," said Sean Homuth, DEFSEC President and CEO. "The system is designed for simplicity and easy on-boarding, with virtually zero time to value and tools specifically for first responders".

DEFSEC Lightning^TM^is a turnkey, cloud-hosted TAK-based SaaS (Software as a Service) platform that gives every officer, medic and firefighter a real-time common operating picture on the device in their pocket, vehicle or command centers.

The platform builds on the widely adopted Team Awareness Kit ecosystem used by the U.S. and Canadian military and key allied nations, while removing the deployment and operational complexity that has historically limited adoption by civilian agencies.  The system builds on DEFSEC's track record of TAK development for North American militaries and is designed to eliminate the need for dedicated hardware, software installation, or internal IT management, enabling rapid deployment and operational readiness.

Core Capabilities

DEFSEC Lightning^TM^ provides an integrated set of mission-critical capabilities, including:

Mission-Specific Toolkits

In addition to its core platform, DEFSEC Lightning^TM^ includes specialized apps tailored to public safety workflows, including:

Technical Architecture and Deployment

More information on the architecture, design and security features of DEFSEC Lightning^TM^  is available on the Company's website at www.defsectec.com .

Pricing and Market Opportunity

DEFSEC Lightning^TM^ is offered on a subscription basis ranging from approximately CAD $15 to $50 per end-user device per month, depending on configuration, scale and service level response time.

The Company estimates the addressable market as follows:

Go-to-Market Advantage

DEFSEC enters the market with an established footprint in the public safety sector through its ARWEN^®^less-lethal product line, which is currently deployed across Canadian and U.S. law enforcement and corrections agencies. "DEFSEC Lightning^TM^extends our existing relationships by adding a critical digital capability alongside our trusted field equipment", said Sean Homuth.

Expansion into Defence Applications

In addition to public safety markets, the Company believes DEFSEC Lightning^TM^ has applicability across defence use cases, including the Canadian Armed Forces(CAF) , Reserve units, and joint Arctic operations.

The platform is designed to operate in low-bandwidth environments and support interoperability between  military, law enforcement, disaster relief, and search-and-rescue organizations.  This aligns with Canada's ongoing modernization priorities in the North, and could provide a leap-ahead in coordinated interoperability across agencies in joint Arctic operations.

About DEFSEC

DEFSEC (TSXV: DFSC) (TSXV: DFSC.WT.U) (NASDAQ: DFSC) (NASDAQ: DFSCSW) (FSE: 62UA) develops and commercializes breakthrough next-generation tactical systems for military and security forces. The company's current portfolio of offerings includes digitization of tactical forces for real-time shared situational awareness and targeting information from any source (including drones) streamed directly to users' smart devices and weapons. Other DEFSEC products include countermeasures against threats such as electronic detection, lasers and drones. These systems can operate stand-alone or integrate seamlessly with OEM products and battlefield management systems, and all come integrated with TAK. The company also has a new proprietary less-lethal product line branded PARA SHOT^TM^ with applications across all segments of the less-lethal market, including law enforcement. The Company is headquartered in Ottawa, Canada.

For more information, please visit https://www.defsectec.com

Forward-Looking Statements

This news release contains "forward-lookingstatements" and "forward-looking information" within the meaning of Canadian and United States securities laws (collectively,"forward-looking statements"), which may be identified by the use of terms and phrases such as "may", "would","should", "could", "expect", "intend", "estimate", "anticipate", "plan","foresee", "have sight of", "believe", or "continue", the description of "optimism"," momentum" or "interest",  the negative of these terms and similar terminology, including referencesto assumptions, although not all forward-looking statements contain these terms and phrases. Forward-looking statements are provided forthe purpose of assisting the reader in understanding us, our business, operations, prospects and risks at a point in time in the contextof historical and possible future developments and therefore the reader is cautioned that such information may not be appropriate forother purposes. Such forward-looking statements are based on the current expectations of DEFSEC's management and are based on assumptionsand subject to risks and uncertainties that are documented in detail in the Company's public filings. Forward-looking statements includedin this include, but are not limited to: management's belief of sufficiency of available financial resources to support forecasted activitiesin 2026 based on cash on hand, anticipated revenue streams and planned expenditures in the fiscal year, subject to execution of the Company'soperating plan and other risks and factors described  in its public filings; interest in DEFSEC Lightning^TM^ orother products and services as well as timing of full implementation or commercial release thereof; the Company's estimates of increasesto annualized gross margin on a go-forward basis and extent thereof, if any; the stage of scaled production for the PARA SHOT^TM^technology into new training cartridges and timing of release thereof; and management's belief that its extensive customer base of lawenforcement agencies for ARWEN throughout North America is a ready market for its new products like PARA SHOT^TM^ as well asDEFSEC Lightning^TM^.

Although DEFSEC's management believes that theassumptions underlying such forward-looking statements are reasonable, they may prove to be incorrect. The forward-looking statementsdiscussed in this news release may not occur by certain specified dates or at all and could differ materially as a result of known andunknown risk factors and uncertainties affecting DEFSEC, including DEFSEC's inability to execute on its current operating plan and/orfiscal 2026 forecasted activities, DEFSEC's inability to secure contracts and subcontracts (on the timelines, size and scale expectedor at all), statements of work and orders for its products in fiscal 2026 and onwards for reasons beyond its control, the renewal or extensionof agreements beyond their original term, the granting of patents applied for by DEFSEC, inability to finance the scale up to full commercialproduction levels for its physical products, inability to secure key partnership agreements to facilitate the outsourcing and logisticsfor its ARWEN^®^ and PARA SHOT^TM^ products, inability to commercialize DEFSEC's Battlespace Laser IdentificationSensor System (BLISS), inability to secure or complete the execution of government contracts, inability to drive growth in DEFSEC's ARWEN^®^product line, inability to advance the commercialization of DEFSEC's PARA SHOT^TM^ products, delay or inability to launch DEFSEC'sLightning SaaS offering, lower than expected or delayed demand for DEFSEC's BLISS, overall interest in DEFSEC's products being lower thananticipated or expected; general economic and stock market conditions; a stagnation or decrease in North American defence and public safetyspending, adverse industry events; future legislative and regulatory developments in Canada, the United States and elsewhere; the inabilityof DEFSEC to implement and execute its business strategies; risks and uncertainties detailed from time to time in DEFSEC's filings withthe Canadian Security Administrators and the United States Securities and Exchange Commission, and many other factors beyond the controlof DEFSEC. Although DEFSEC has attempted to identify important factors that could cause actual actions, events or results to differ materiallyfrom those described in forward-looking statements, there may be other factors that cause actions, events or results to differ from thoseanticipated, estimated or intended. Except as required by applicable securities laws, forward-looking statements speak only as of thedate on which they are made and DEFSEC undertakes no obligation to publicly update or revise any forward-looking statements, whether asa result of new information, future events or otherwise.

Neither the TSX Venture Exchange nor its respectiveRegulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacyor accuracy of this news release.

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SOURCE DEFSEC Technologies Inc

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%CIK: 0001889823

For further information: For further information, please contact: Sean Homuth, President and Chief Executive Officer, 613 863-1255, [email protected]

CO: DEFSEC Technologies Inc

CNW 17:01e 06-MAY-26