Hpq Silicon IncTSXV: HPQ

Novacium Signs Letter of Intent with GH Technologies for the Supply of GEN4 Li-Ion Cells and Batteries in Asia

May 21, 2026 at 3:00 PM UTC · Issued by HPQ Silicon Inc via GlobeNewswire

Asia-Pacific market represents around 60% of global cylindrical Li-ion demand ^[1]
HPQ holds a 36.8% equity interest in Novacium SAS and an exclusive North American license to Novacium technologies for Canada, the United States, and Mexico and sell GEN4 cells under its ENDURA+ trademark.

MONTREAL, May 21, 2026 (GLOBE NEWSWIRE) -- HPQ Silicon Inc. (“HPQ” or the “Company”) (TSX-V: HPQ, OTCQB: HPQFF, FRA: O08), a technology company specializing in advanced materials and next-generation processes, today announced that its French technology partner, Novacium SAS, has signed a Letter of Intent (“LOI”) with GH Technologies Co., Ltd. (“GH Technologies”) ^[2]. The arms-length LOI was signed on May 15, 2026, at the 18th China International Battery Fair (“CIBF”) and covers the supply of Novacium’s GEN4 lithium-ion cells in 18650 and 21700 formats, along with other lithium-ion batteries built on Novacium’s GEN4 silicon anode technology.

The non-binding, non-exclusive LOI establishes a 36-month framework for commercial prospecting and potential distribution across multi-sector applications, including light electric mobility, embedded systems, and high-energy-density electronic equipment in Asia-Pacific, a region that accounts for more than 57% of global demand for cylindrical lithium-ion cells ^[1]. A key objective of the LOI is to evaluate potential commercial opportunities for Novacium GEN4 products in Asia-Pacific markets over the term of the agreement.

“Following an extensive evaluation of NOVACIUM GEN4 cells, including reported capacity exceeding 6,600 mAh, reported energy density of 319.9 Wh/kg, and international certifications including IEC 62133, UL 1642, and UN 38.3, ^[3] GH Technologies agreed to enter into this LOI with Novacium to further evaluate potential business opportunities in Asia-Pacific markets,” stated Mr. Jacques Shen, CEO of GH Technologies Co., Ltd.

The completion of a definitive transaction remains subject to the negotiation and execution of a purchase and sale agreement, the successful technical validation of the cells by GH Technologies Co., Ltd.’s customers within their targeted applications, and the receipt of all applicable regulatory approvals.

“The signing of this LOI at CIBF supports Novacium’s ongoing efforts to evaluate potential commercial opportunities for its GEN4 battery technologies in Asia,” said Dr. Jed Kraiem, Chief Operating Officer of Novacium SAS. “The discussions with GH Technologies reflect interest in evaluating GEN4 cells for applications requiring high-capacity lithium-ion solutions.”

“This LOI provides a framework for Novacium and GH Technologies to evaluate potential business opportunities involving GEN4 battery technologies in Asia-Pacific markets,” said Bernard Tourillon, Chairman and Chief Executive Officer of HPQ Silicon Inc. “HPQ’s 36.8% equity ownership in Novacium SAS and its exclusive North American license provide the Company with access to these technologies for Canada, the United States, and Mexico under the HPQ ENDURA+ trademark.”

REFERENCE SOURCES

[1]	Based on data compiled from publicly available information sources, including, but not limited to, the information available at the following link: https://www.leadintelligent.com/en/cylindrical-batteries-market-size-types-and-trends/
[2]	Link to Novacium release (in French)
[3]	HPQ Silicon Inc. press releases dated January 8^th 2026, January 15^th, 2026, April 7, 2026, and April 15, 2026.

About HPQ Silicon

HPQ Silicon Inc. is a Quebec-based TSX Venture Exchange industrial issuer (TSX-V: HPQ) focused on innovation in advanced materials and critical process development. In partnership with its research and development partner Novacium—of which HPQ is a shareholder—the Company is advancing next-generation silicon-based anode materials (Gen3 and Gen4) for batteries, commercializing its ENDURA+ lithium-ion cells, and developing breakthrough clean-hydrogen and waste-to-energy technologies, for which HPQ holds exclusive North American rights.

HPQ is also pursuing proprietary technologies to become a low-cost, zero-CO₂ producer of fumed silica with technical support from PyroGenesis Inc. Together, these initiatives position HPQ to capture growth opportunities in the energy storage, clean hydrogen, and advanced materials markets essential to achieving global net-zero goals.

For more information, please visit HPQ Silicon web site.

About NOVACIUM SAS

Novacium is an innovative technology start-up created in 2022, in France. It is an engineering and R&D company dedicated to materials for energy, with a specialization in silicon and hydrogen. Novacium is developing 2 technologies. The first concerns a new silicon-based anode material that significantly increases the capacity of Li-ion batteries. Novacium's second activity is the generation of hydrogen. Novacium is developing an autonomous hydrogen generation system for civil and military applications fueled by a patented alloy based on silicon and aluminum.

Cautionary Note Regarding Forward-Looking Information

This press release contains forward-looking statements. These statements rely on assumptions about technology performance, market demand, permits, financing, supply chains, and economic conditions but remain subject to significant risks, including delays, regulatory challenges, competition, pricing, financing availability, and macroeconomic uncertainties. Actual outcomes may differ materially from expectations. Detailed risk factors are outlined in HPQ’s Annual Information Form available on SEDAR+. Forward-looking information is provided solely to outline management’s future expectations and objectives.

A more detailed cautionary note regarding forward-looking information related to the HPQ Endura+ batteries project is available for download [here].

Further information regarding the Company is available in the SEDAR+ database (www.sedarplus.ca), and on the Company’s website at: http://www.hpqsilicon.com/

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

This News Release is available on the company's CEO Verified Discussion Forum, a moderated social media platform that enables civilized discussion and Q&A between Management and Shareholders.

Source: HPQ Silicon Inc.

For further information contact:
Bernard J. Tourillon, Chairman, President, and CEO
Tel +1 (514) 846-3271 / Email: Info@hpqsilicon.com

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/388cdfa6-5c33-41e8-b68f-8fff9719dc7a

Attached document

Contents

HPQ Silicon Secures UL 1642 Certification for HPQ ENDURA+ Lithium- Ion Cells, Clearing Final Regulatory Barrier for U.S. Commercial Sales · page 1
HPQ SILICON · page 2
UL 1642 Confirms Cell-Level Safety Under Real-World and Abuse Conditions · page 2
From Validation to Commercial Execution · page 2
HPQ SILICON · page 3
About HPQ Silicon · page 3
Cautionary Note Regarding Forward-Looking Information · page 3
For further information contact: · page 3

Page 1

HPQ SILICON

HPQ Silicon Secures UL 1642 Certification for HPQ ENDURA+ Lithium- Ion Cells, Clearing Final Regulatory Barrier for U.S. Commercial Sales

• UL 1642 certification clears HPQ ENDURA+ 18650 and 21700 cells for U.S. commercial sales, meeting the baseline safety standard required by North American OEMs and integrators.

• With both UL 1642 and UN 38.3 certifications secured, HPQ transitions from validation to commercialization, enabling immediate customer engagement and qualification discussions in the U.S. market.

MONTREAL, Canada, January 08^th, 2025 — HPQ Silicon Inc. (“HPQ” or the “Company”) (TSX-V: HPQ, OTCQB: HPQFF, FRA: O08), a technology company specializing in advanced materials innovation and the development of next-generation processes, announced that its HPQ ENDURA+ lithium-ion battery cells have received UL 1642 certification, the core safety standard required for commercial acceptance of lithium-ion cells in the United States. The certification applies to both commercially targeted formats, the 18650 (4,000 mAh) and 21700 (6,000 mAh) cells, and confirms compliance with the safety requirements demanded by U.S. OEMs, integrators, and end-market customers.

UL 1642 certification is widely regarded as the technical threshold for selling lithium-ion cells in the U.S. market. Its completion marks a decisive regulatory milestone for HPQ, enabling direct engagement with North American customers across electronics, mobility, embedded systems, and professional equipment markets.

This achievement follows HPQ’s earlier UN 38.3 transport certification (December 16^th release) and completes the Company’s U.S. regulatory framework for its HPQ ENDURA+ cell platform, positioning the product line for immediate commercial discussions and supply chain integration.

Cylindrical 18650 and 2170 HPQ Endura+ cells.

Page 2

HPQ SILICON

“Certifying at the cell level, is where real market access begins in the United States,” said Bernard Tourillon, President and CEO of HPQ Silicon Inc. “UL 1642 gives OEMs and integrators confidence that safety has been engineered into the core of the product, not added later at the system level. For HPQ ENDURA+, this removes a key qualification hurdle and allows commercial conversations to focus on performance, scalability, and integration rather than regulatory risk.”

UL 1642 Confirms Cell-Level Safety Under Real-World and Abuse Conditions

UL 1642 certifications verify the safety of lithium-ion cells through a comprehensive series of electrical, mechanical, and thermal stress tests that simulate real-world use and failure scenarios. HPQ’s HPQ ENDURA+ cells successfully met all applicable requirements, including short-circuit protection, resistance to overcharge and forced discharge, thermal stability, mechanical integrity under impact and crush conditions, and tolerance to electrical and mechanical abuse.

Passing these tests confirms that the HPQ ENDURA+ cells demonstrate the intrinsic safety, thermal control, and structural robustness required for deployment in regulated U.S. applications. Importantly, the certification applies at the cell level, making it a prerequisite for downstream integration into certified battery packs and finished products.

By securing this certification, HPQ removes a critical barrier to entry for U.S. commercialization. The certification allows the Company to engage directly with North American OEMs, accelerate qualification programs, and advance commercial agreements without regulatory constraints tied to cell safety compliance.

From Validation to Commercial Execution

HPQ approached UL 1642 certification with a high level of technical confidence. Many of the underlying safety and abuse tests had already been replicated internally during prior development and qualification phases. Formal certification now provides third-party confirmation that the HPQ ENDURA+ platform meets U.S. safety expectations at scale.

With both UN 38.3 transport certification and UL 1642 safety certification now in place, HPQ has completed the core regulatory requirements for U.S. commercialization. The Company is positioned to transition from certification and validation activities toward customer engagement, qualification programs, and early commercial deployment.

“Reaching this stage changes the nature of our discussions with the market,” added Tourillon. “HPQ ENDURA+ is no longer being evaluated as a development program, but as a compliant product platform that can be integrated into existing supply chains. That credibility allows us to move from technical validation to commercial execution, including customer qualification, volume planning, and partnership structuring in the U.S.”

This milestone underscores HPQ’s progression from advanced battery research and development to market-ready execution. The HPQ ENDURA+ platform is now cleared for U.S. commercial pathways, enabling the Company to focus on scaling partnerships, advancing supply discussions, and converting technical progress into revenue-driven outcomes.

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HPQ SILICON

About HPQ Silicon

HPQ Silicon Inc. is a Quebec-based TSX Venture Exchange industrial issuer (TSX-V: HPQ) focused on innovation in advanced materials and critical process development. In partnership with its research and development partner Novacium—of which HPQ is a shareholder—the Company is advancing next-generation silicon-based anode materials (Gen3) for batteries, commercializing its ENDURA+ lithium-ion cells, and developing breakthrough clean-hydrogen and waste-to-energy technologies, for which HPQ holds exclusive North American rights.

HPQ is also pursuing proprietary technologies to become a low-cost, zero-CO₂ producer of fumed silica and high-purity silicon, with technical support from PyroGenesis Inc. Together, these initiatives position HPQ to capture growth opportunities in the energy storage, clean hydrogen, and advanced materials markets essential to achieving global net-zero goals.

For more information, please visit HPQ Silicon web site.

Cautionary Note Regarding Forward-Looking Information

A more detailed cautionary note regarding forward-looking information related to the HPQ Endura+ batteries project is available for download [here],

Further information regarding the Company is available in the SEDAR+ database (www.sedarplus.ca), and on the Company’s website at: http://www.hpqsilicon.com/

This News Release is available on the company's CEO Verified Discussion Forum, a moderated social media platform that enables civilized discussion and Q&A between Management and Shareholders.

Source: HPQ Silicon Inc.

For further information contact:

Bernard J. Tourillon, Chairman, President, and CEO Tel +1 (514) 846-3271 / Email: Info@hpqsilicon.com

Attached document

Contents

HPQ Silicon and Novacium Achieve IEC 62133 Certification – Major Step Toward Global Commercialization of High-Performance Li-Ion Cells · page 1
HPQ SILICON · page 2
IEC 62133: A Global Benchmark for Battery Safety and Market Access · page 2
Removing Barriers to Commercialization and Global Sales · page 2
About HPQ Silicon · page 2
HPQ SILICON · page 3
About NOVACIUM SAS · page 3
Cautionary Note Regarding Forward-Looking Information · page 3
For further information contact: · page 3

Page 1

HPQ SILICON

HPQ Silicon and Novacium Achieve IEC 62133 Certification – Major Step Toward Global Commercialization of High-Performance Li-Ion Cells

• IEC 62133 certification confirms that HPQ Endura+ and Novacium lithium-ion cells meet the world’s leading international safety standard for portable rechargeable batteries

• Combined with existing UN 38.3 (transport) and UL 1642 (U.S.) certifications, this completes the core set of globally recognized safety approvals

• Removes major regulatory barriers and accelerates commercial discussions, customer qualification programs, and market entry with OEMs worldwide

MONTREAL, Canada, January 15^th, 2026 — HPQ Silicon Inc. (“HPQ” or the “Company”) (TSX-V: HPQ, OTCQB: HPQFF, FRA: O08), a technology company focused on innovative materials and nextgeneration processes, together with its French technology partner Novacium SAS, today announced that their lithium-ion battery cells have received IEC 62133 certification.

IEC 62133 is the most widely accepted international safety standard for portable rechargeable lithium-ion batteries and battery packs. It is mandatory or strongly preferred for market access in the vast majority of countries worldwide (Europe, Asia, and many others). The certification validates electrical, mechanical, and chemical safety under both normal use and reasonably foreseeable misuse conditions.

The certification applies to HPQ and Novacium’s cylindrical cells in the widely adopted 18650 and 21700 formats – the dominant sizes used in consumer electronics, power tools, industrial equipment, laboratory instruments, medical devices, and many other applications.

Cylindrical 18650 and 21700 HPQ Endura+ cells.

Page 2

HPQ SILICON

“This is a critical commercial milestone for HPQ and Novacium,” said Bernard Tourillon, Chairman, President and CEO of HPQ Silicon Inc. “With UN 38.3, UL 1642, and now IEC 62133 in place, our cells fully satisfy the major safety requirements of regulators, major manufacturers, and end-users globally. We can now move from technical evaluations to serious commercial negotiations, product qualification at customer sites, and integration into international supply chains.”

IEC 62133: A Global Benchmark for Battery Safety and Market Access

IEC 62133 is one of the most widely recognized safety standards for exporting lithium-ion batteries into global markets. Compliance is required or strongly preferred in many jurisdictions and across multiple end-use sectors. The certification validates our cells against a comprehensive series of tests designed to mitigate risks such as overcharging, over-discharging, short circuits, and thermal events, while also confirming proper labeling, documentation, and traceability.

The achievement of IEC 62133 compliance significantly de-risks the product for potential partners and customers, expands addressable market opportunities, and supports HPQ’s strategy to rapidly scale production and secure long-term commercial agreements.

“From a business standpoint, IEC 62133 dramatically broadens our market reach,” said Derick Lila, M.A., M.Sc., HPQ’s Director of Communication and Director of Business Development. “Customers can now confidently advance from testing to procurement and contracts. We are actively increasing engagement with global partners and expect faster progress in qualification programs and initial sales.”

Removing Barriers to Commercialization and Global Sales

“Moreover, from a commercialization standpoint, IEC 62133 expands our path to revenue,” added Mr. Lila. “This certification gives potential customers the assurance they need to move from technical evaluation to procurement discussions. It positions HPQ and Novacium to pursue opportunities across multiple regions while supporting our strategy to scale production and secure long-term commercial agreements.”

The IEC 62133 certification further reinforces HPQ’s objective of transitioning from advanced materials development to high value added and market-ready energy storage solutions. With internationally recognized safety validation in place, HPQ and Novacium are now positioned to expand and accelerate customer engagement, advance qualification programs, and support sales discussions across global lithium-ion battery markets.

About HPQ Silicon

HPQ Silicon Inc. is a Quebec-based TSX Venture Exchange industrial issuer (TSX-V: HPQ) focused on innovation in advanced materials and critical process development. In partnership with its research and development partner Novacium—of which HPQ is a shareholder—the Company is advancing next-generation silicon-based anode materials (Gen3) for batteries, commercializing its ENDURA+ lithium-ion cells, and developing breakthrough clean-hydrogen and waste-to-energy technologies, for which HPQ holds exclusive North American rights.

Page 3

HPQ SILICON

materials markets essential to achieving global net-zero goals.

For more information, please visit HPQ Silicon web site.

About NOVACIUM SAS

Cautionary Note Regarding Forward-Looking Information

A more detailed cautionary note regarding forward-looking information related to the HPQ Endura+ batteries project is available for download [here],

Further information regarding the Company is available in the SEDAR+ database

(www.sedarplus.ca), and on the Company’s website at: http://www.hpqsilicon.com/

This News Release is available on the company's CEO Verified Discussion Forum, a moderated social media platform that enables civilized discussion and Q&A between Management and Shareholders.

Source: HPQ Silicon Inc.

For further information contact:

Bernard J. Tourillon, Chairman, President, and CEO Tel +1 (514) 846-3271 / Email: Info@hpqsilicon.com

Attached document

Page 1

HPQ SILICON

HPQ Silicon Reports 6,696 mAh GEN4 21700 Cell Performance Among the Highest Reported Globally

• GEN4 21700 cells achieve an average capacity above 6,600 mAh, with a record cell reaching 6,696 mAh — among the highest capacities reported globally in this format^[1]

• Energy density of 319.9 Wh/kg and 906.2 Wh/L confirmed; placing GEN4 21700 cells within the upper range of currently reported performance

• GEN4 is a 45% improvement over graphite baseline and 9% advance over GEN3

MONTREAL, Canada, April 7 2026 — HPQ Silicon Inc. (“HPQ” or the “Company”) (TSX-V: HPQ, OTCQB: HPQFF, FRA: O08), today announced that 21700 cylindrical cells manufactured using Novacium's GEN4 silicon-based anode material have achieved an average discharge capacity exceeding 6,600 mAh, with a record cell reaching 6,696 mAh at 319.9 Wh/kg gravimetric and 906.2 Wh/L volumetric energy density ^[1].

These results represent ongoing development and validation activities as part of HPQ’s broader commercialization efforts in silicon-based battery materials.

Commercially available 21700 graphite cells typically deliver between 4,800 and 5,000 mAh. Capacities above 6,500 mAh in this format remain limited to a small number of developers globally, including Molicel, EVE Energy, and Amprius ^[2].

The result is the latest step in a consistent generational progression: from a 2,778 mAh graphite reference in 18650 format, through GEN1 (~3,153 mAh), GEN2 (~3,808 mAh), GEN3 (~4,030 mAh in 18650 / ~6,050 mAh in 21700), to GEN4's current 6,600+ mAh average — a 45% improvement over the graphite baseline and a 9% advance over GEN3 in the same format. Based on current development progress, HPQ anticipates further performance improvements, with future iterations targeting the 7,000 mAh range as part of its ongoing material optimization roadmap.

HPQ holds exclusive North American rights to commercialize Novacium's GEN3 and GEN4 silicon-based battery materials under the HPQ ENDURA+ brand.

"Reaching an average above 6,500 mAh, with a peak of 6,696 mAh, using a material that has not yet been fully optimized, confirms we have an industrially viable, high-performance solution advancing within our commercialization pathway," said Bernard Tourillon, President and CEO of HPQ Silicon. "To our knowledge, this level of capacity ranks among the highest reported for an industrial 21700-format cell."

"These results validate the strategic direction we have pursued since GEN1 and support the potential for advanced applications in electric vehicles, drones, and consumer electronics," added Dr. Jed Kraiem, COO of Novacium.

Stakeholders seeking more detailed technical information on the results presented are invited to consult the following technical blog, which provides additional context supporting this release.

Page 2

REFERENCE SOURCES

[1] Internal capacity test results for a 21700-cell manufactured with GEN4 material by an industrial partner, under standard industry conditions (0.1C, 4.2V–2.5V, 25°C) compared to publicly available data.

[2] https://www.molicel.com/inr-21700-m65a/, https://diy500amp.com/products/feb-21700-battery- cell-6500mah-13a-ultra-high-capacity-energy-cell, https://www.nitecore.fr/batterie-rechargeable- 21700-haute-performance-capacite-6000mah-36v-c2x40494744, https://ir.amprius.com/news- events/press-releases/detail/124/amprius-ships-new-high-performance-6-3ah-silicon-anode- cylindrical-cell-to-fortune-500-company, https://imrbatteries.com/products/eve-58e-21700- 5800mah-18a-battery

About HPQ Silicon

HPQ Silicon Inc. is a Quebec-based TSX Venture Exchange industrial issuer (TSX-V: HPQ) focused on innovation in advanced materials and critical process development. In partnership with its research and development partner Novacium—of which HPQ is a shareholder—the Company is advancing next-generation silicon-based anode materials (Gen3) for batteries, commercializing its ENDURA+ lithium-ion cells, and developing breakthrough clean-hydrogen and waste-toenergy technologies, for which HPQ holds exclusive North American rights.

For more information, please visit HPQ Silicon web site.

About NOVACIUM SAS

Cautionary Note Regarding Forward-Looking Information

Page 3

HPQ SILICON

A more detailed cautionary note regarding forward-looking information related to the HPQ Endura+ batteries project is available for download [here],

Further information regarding the Company is available in the SEDAR+ database (www.sedarplus.ca), and on the Company’s website at: http://www.hpqsilicon.com/

This News Release is available on the company's CEO Verified Discussion Forum, a moderated social media platform that enables civilized discussion and Q&A between Management and Shareholders.

Source: HPQ Silicon Inc.

For further information contact:

Bernard J. Tourillon, Chairman, President, and CEO Tel +1 (514) 846-3271 / Email: Info@hpqsilicon.com

Attached document

Contents

HPQ Silicon’s Industrial Lithium-ion GEN4 21700 Cells Surpass 7,000 mAh — Based on Extended Test Conditions · page 1
HPQ SILICON · page 2
REFERENCE SOURCES · page 2
About HPQ Silicon · page 2
HPQ SILICON · page 3
About NOVACIUM SAS · page 3
Cautionary Note Regarding Forward-Looking Information · page 3
For further information contact: · page 3

Page 1

HPQ SILICON

HPQ Silicon’s Industrial Lithium-ion GEN4 21700 Cells Surpass 7,000 mAh — Based on Extended Test Conditions

• GEN4 21700 cells break the 7,000 mAh barrier, achieving a record capacity of 7,030 mAh, which may represent one of the highest capacities reported to date in an industrial 21700 format, based on publicly available data^[1]

• Deep-discharge cycling protocol (0.55V lower cutoff) indicates the potential to extend the operating voltage range of GEN4 lithium-ion cells beyond conventional limits

• 70 cycles achieved with less than 2% capacity degradation indicate stability under extended deep-discharge conditions that would typically result in significant degradation in conventional cells

MONTREAL, Canada, April 15 2026 — HPQ Silicon Inc. (“HPQ” or the “Company”) (TSX-V: HPQ, OTCQB: HPQFF, FRA: O08), today announced that 21700 cylindrical cells manufactured using Novacium SAS’s GEN4 silicon-based anode material have surpassed 7,000 mAh of discharge capacity, based on internal testing conducted under extended operating conditions ^[1]. This result was achieved under a modified deep-discharge cycling protocol, with a lower voltage cutoff of 0.55V, compared to the industry-standard 2.5V.

Commercially available 21700 graphite cells typically deliver between 4,800 and 5,000 mAh. The previous Novacium GEN4 record stood at 6,696 mAh under standard conditions (0.1C, 4.2V–2.5V, 25°C) ^[2]. Crossing the 7,000 mAh threshold required departing from conventional testing protocols and accessing a voltage window previously considered incompatible with long-term cycling stability in conventional lithium-ion chemistries ^[3].

What makes this result scientifically significant is not merely the capacity figure, but the demonstrated cycle stability achieved alongside it. A discharge to 0.55V would typically result in significant and irreversible degradation ^[3] in conventional graphite or silicon-based cells. Novacium’s GEN4 material completed 70 full cycles under this protocol with less than 2% capacity degradation, indicating that its silicon-based material may tolerate extended operating conditions beyond those typically used in conventional lithium-ion cells.

These results suggest the potential for expanded operating windows in lithium-ion cell design, subject to further validation, optimization, and system-level integration. Potential applications may include high-energy-density use cases, where capacity per unit volume is a critical constraint; however, commercial applicability will depend on further development and validation.

This result continues a consistent generational progression: from a 2,778 mAh graphite reference in 18650 formats, through GEN1 (∼3,153 mAh), GEN2 (∼3,808 mAh), GEN3 (∼4,030 mAh in 18650 / ∼6,050 mAh in 21700), GEN4’s 6,696 mAh record under standard conditions, and now a 7,000+ mAh result in extended-range conditions. GEN5 is being developed with a target of achieving approximately 7,000 mAh under standard protocols by 2027 ^[4].

HPQ holds exclusive North American rights to commercialize Novacium’s GEN3 and GEN4 siliconbased battery materials under the HPQ ENDURA+ brand.

Page 2

HPQ SILICON

“Breaking the 7,000 mAh barrier in a 21700 cell is a milestone that, to the Company’s knowledge, has not been widely reported in publicly available data for an industrial-format cell under comparable conditions. What is equally important is that we achieved this while maintaining initial cycle stability over the test period, thereby indicating that our material can operate under extended conditions that, according to published literature, typically result in severe degradation or loss of functionality in conventional graphite-based lithium-ion cells ^[3],” said Bernard Tourillon, President and CEO of HPQ Silicon. “This supports the electrochemical performance characteristics of GEN4 and enables further exploration of expanded operating parameters for potential future battery applications, subject to further validation.”

“These results confirm something we have believed since GEN3: Novacium’s silicon-based anode technology may enable performance improvements beyond conventional operating constraints. The ability to cycle reliably at 0.55V lower cutoff with less than 2% degradation over 70 cycles suggests the possibility of alternative operating modes, subject to further validation and engineering development,” added Dr. Jed Kraiem, COO of Novacium.

Stakeholders seeking more detailed technical information on the results presented are invited to consult the following technical blog, which provides additional context supporting this release.

REFERENCE SOURCES

[1] Internal capacity test results for a 21700-cell manufactured with GEN4 material by an industrial partner, under extended deep-discharge cycling conditions (0.1C, 4.2V–0.55V, 25°C, 50 cycles), compared to publicly available data. These results have not been independently verified and may not be representative of commercial performance.

[3] https://www.nature.com/articles/s41598-021-85575-x

[4] This statement constitutes forward-looking information and is subject to development risks and uncertainties

About HPQ Silicon

HPQ Silicon Inc. is a Quebec-based TSX Venture Exchange industrial issuer (TSX-V: HPQ) focused on innovation in advanced materials and critical process development. In partnership with its research and development partner Novacium—of which HPQ is a shareholder—the Company is advancing next-generation silicon-based anode materials (Gen3) for batteries, commercializing its ENDURA+ lithium-ion cells, and developing breakthrough clean-hydrogen and waste-toenergy technologies, for which HPQ holds exclusive North American rights.

Page 3

HPQ SILICON

For more information, please visit HPQ Silicon web site.

About NOVACIUM SAS

Cautionary Note Regarding Forward-Looking Information

A more detailed cautionary note regarding forward-looking information related to the HPQ Endura+ batteries project is available for download [here].

Further information regarding the Company is available in the SEDAR+ database (www.sedarplus.ca), and on the Company’s website at: http://www.hpqsilicon.com/

This News Release is available on the company's CEO Verified Discussion Forum, a moderated social media platform that enables civilized discussion and Q&A between Management and Shareholders.

Source: HPQ Silicon Inc.

For further information contact:

Bernard J. Tourillon, Chairman, President, and CEO Tel +1 (514) 846-3271 / Email: Info@hpqsilicon.com

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