PyroGenesis Takes Half of Fumed Silica Reactor Holder HSPI

PyroGenesis Inc. (TSX: PYR; OTCQX: PYRGF; FRA: 8PY1) said on September 29, 2026 that it has completed the acquisition of a 50% ownership interest in HPQ Silica Polvere Inc., the rights-holder of the Fumed Silica Reactor technology.

PyroGenesis Inc. (TSX: PYR; OTCQX: PYRGF; FRA: 8PY1) has closed the purchase of a 50% ownership interest in HPQ Silica Polvere Inc., the entity that holds the rights to the Fumed Silica Reactor technology. The Montreal-based plasma specialist confirmed completion of the deal in a September 29, 2026 announcement carried by BNN Bloomberg.

PyroGenesis describes itself as a leader in ultra-high temperature processes and engineering innovation, and a plasma-based technology provider to heavy industry and defense. The HSPI transaction shifts one of the company's long-running development programs from a purely contracted engineering relationship into a direct equity position in the vehicle that owns the intellectual property.

What a half-stake in HSPI actually buys

The asset at the center of the transaction is the Fumed Silica Reactor. Fumed silica is a very fine, high-purity form of silicon dioxide used as a thickener, anti-settling agent and reinforcing filler across silicone rubber, adhesives, sealants, coatings, pharmaceuticals and battery materials. It is conventionally made by burning silicon tetrachloride in a hydrogen-oxygen flame — a chlorine-based route with a heavy energy and handling burden. Any process that reaches the same product through a different thermal pathway is commercially interesting to the incumbents, which is the premise the reactor work has been built on.

Owning half of the rights-holder rather than simply being paid to engineer equipment changes PyroGenesis's economics in two ways. First, it converts a fee-for-service relationship into participation in whatever licensing, royalty or production income the technology eventually produces. Second, it gives the company a say in how the asset is commercialized rather than leaving that decision entirely with a partner. The flip side is that PyroGenesis now carries development risk on its own balance sheet, and 50% ownership means control is shared, not held outright.

The announcement as summarized does not disclose what PyroGenesis paid, how the consideration was structured, or what milestones remain before the reactor reaches commercial scale. Investors should treat the deal as a structural step rather than a revenue event until the company provides those details.

The stock reaction on the OTC tape

PyroGenesis's U.S. over-the-counter line, PYRGF, was quoted at 0.17 as of the last trade recorded at 13:48 GMT on September 30, 2026, up 5.71% from the prior close of 0.16. The day range was 0.16 to 0.17 — a one-cent band, which is the reality of trading a sub-quarter security: a single tick is a mid-single-digit percentage move. The currency denomination is not specified in the quote feed; the primary listing is on the Toronto Stock Exchange under PYR, and the OTCQX line is a secondary venue for U.S. holders.

That move came against a broadly steady session for the major benchmarks. The S&P 500 tracker (SPY) was at $766.32, up 0.28%; the Nasdaq 100 tracker (QQQ) was at $740.95, up 0.41%; and the Dow tracker (DIA) was slightly lower at $512.58, off 0.06%. In other words, the day's gain in PYRGF was company-specific rather than a tide effect, though at this price level and this liquidity, readers should be careful about reading too much intent into a one-tick print.

Where this sits in PyroGenesis's commercialization queue

PyroGenesis has spent years positioning a portfolio of plasma and ultra-high-temperature systems across several end markets — heavy industry, metals, waste destruction and, increasingly, defense. The pattern with technology companies at this stage is familiar: a broad slate of programs, each at a different point between laboratory validation and paying customer, with cash consumed across all of them while revenue arrives from only a few.

Consolidating an ownership interest in HSPI is a narrowing move. It says the company sees enough in the fumed silica route to put capital behind it rather than simply bill hours against it. For shareholders, the question that follows is whether that capital allocation crowds out the defense and heavy-industry lines that have been carrying the commercial narrative, or complements them by adding a materials asset with a recurring revenue profile.

The tests that will decide whether this pays

Several things need to become visible before the market can price the stake with any conviction:

• Consideration and structure. Cash, shares, earn-out or a combination — and whether any portion is contingent on technical milestones.
• Accounting treatment. A 50% interest typically sits as an equity-method investment or a joint arrangement rather than a consolidation, which affects how much of HSPI's activity shows up on PyroGenesis's income statement.
• Scale-up status. Where the reactor sits between bench demonstration and a unit capable of continuous, specification-grade output at industrial volumes.
• Offtake or licensing interest. Named counterparties in silicones, adhesives or battery materials would be the clearest evidence of commercial pull.
• Governance of the other half. Who holds the remaining 50%, and how deadlocks and future funding calls are handled.

How to read a micro-cap deal with no price tag

Acquisitions announced without disclosed consideration are common among small-capitalization technology issuers, and they are not inherently a red flag — the amount may be immaterial under continuous-disclosure thresholds, or the structure may be share-based and detailed later in a filing. But the absence of a number means the market cannot yet judge whether value was created or simply relocated.

The disciplined approach is to wait for the company's next set of filings, where the purchase price allocation, the nature of the consideration and any commitments attached to HSPI should appear. Until then, the verifiable facts are narrow and worth restating plainly: PyroGenesis now owns half of the entity that holds the rights to the Fumed Silica Reactor, the transaction has closed, and the U.S.-quoted shares were trading at 0.17, up 5.71% on the day, on the morning after the announcement.

Key facts

• Transaction: PyroGenesis completes acquisition of a 50% ownership interest in HPQ Silica Polvere Inc. (HSPI)
• Asset: HSPI is the rights-holder of the Fumed Silica Reactor technology
• Listings: TSX: PYR; OTCQX: PYRGF; FRA: 8PY1
• PYRGF price: 0.17, +5.71% on the day (last trade 13:48 GMT, Sept 30, 2026; prev close 0.16)

Frequently asked questions

What exactly did PyroGenesis acquire?

PyroGenesis completed the acquisition of a 50% ownership interest in HPQ Silica Polvere Inc., known as HSPI. HSPI is the rights-holder of the Fumed Silica Reactor technology. The company announced completion of the transaction on September 29, 2026. A 50% interest means shared ownership rather than outright control of the entity holding the technology rights.

How much did PyroGenesis pay for the stake?

The announcement as summarized does not disclose the purchase price, the form of consideration, or whether any part of the payment is contingent on future milestones. Small-capitalization issuers frequently announce closings before detailing terms. Those figures would normally appear in the company's subsequent regulatory filings, including a purchase price allocation and notes on the investment's accounting treatment.

What is fumed silica used for?

Fumed silica is a very fine, high-purity form of silicon dioxide used industrially as a thickener, anti-settling agent and reinforcing filler. It appears in silicone rubber, adhesives, sealants, paints and coatings, pharmaceuticals and battery materials. The conventional manufacturing route burns silicon tetrachloride in a hydrogen-oxygen flame, a chlorine-based process with significant energy and handling requirements.

Where does PyroGenesis stock trade and at what price?

PyroGenesis has a primary listing on the Toronto Stock Exchange under PYR, a U.S. over-the-counter quotation on OTCQX as PYRGF, and a Frankfurt listing as 8PY1. The PYRGF line last traded at 0.17, up 5.71% from a prior close of 0.16, as of 13:48 GMT on September 30, 2026, within a day range of 0.16 to 0.17.

What does PyroGenesis do?

The company describes itself as a leader in ultra-high temperature processes and engineering innovation, and as a plasma-based technology provider to heavy industry and defense. Its work centers on plasma torch and high-temperature reactor systems applied across industrial processing, materials production and defense-related applications, with individual programs at varying stages of commercial development.

What should investors watch next?

The key disclosures are the consideration paid and its structure, the accounting treatment of a 50% interest, the technical readiness of the Fumed Silica Reactor for continuous industrial-scale output, the identity and rights of the holder of the remaining 50%, and any named licensing or offtake counterparties in silicones, adhesives or battery materials.

Sources

• PyroGenesis Completes Acquisition of 50% Ownership Interest in HPQ Silica Polvere Inc., Rights-Holder of the Fumed Silica Reactor Technology — BNN Bloomberg

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