Westport Fuel Systems Inc. (WPRT), now Aetherion Technologies Inc., changed its name on October 14, 2026. The company expects its common shares to begin trading under AETR on Nasdaq and the Toronto Stock Exchange on or about October 23, 2026, subject to final exchange approvals; until then, trading continues under WPRT. The company’s CUSIP and ISIN numbers will change.
The prospectus supplement updates the existing prospectus with the name-change information.
Westport Fuel Systems Inc. changed its name to Aetherion Technologies Inc. effective October 14, 2026. Its common shares are expected to begin trading under ticker symbol AETR on Nasdaq and the TSX on or about October 23, 2026, subject to final exchange approvals; trading continues under WPRT until then. The company’s CUSIP and ISIN numbers will change. On October 15, 2026, the last reported common-share prices were $1.82 on Nasdaq and C$2.54 on the TSX.
Westport Fuel Systems Inc. changed its name to Aetherion Technologies Inc. on October 14, 2026. The company expects its common shares to begin trading under the Aetherion name on the Toronto Stock Exchange and Nasdaq on or about October 23, 2026, under ticker symbol AETR, subject to final exchange approvals. Until then, trading continues under WPRT. The company’s CUSIP and ISIN identifiers will change in connection with the name change.
Westport Fuel Systems Inc. (WPRT) announced that it has changed its name to Aetherion Technologies Inc., reflecting a focus on heavy-duty clean-transport technologies. The company says the name change will not affect operations, ownership or commitments. Shares are expected to begin trading under the AETR ticker on the Toronto Stock Exchange and Nasdaq on or about October 23, 2026, subject to final exchange approvals; trading will continue under WPRT until then.
Aetherion holds a majority ownership interest in Cespira, a joint venture with Volvo Group. Cespira’s HPDI fuel system is operating in more than 12,000 trucks worldwide. Cespira reported second-quarter 2026 revenue of $27.1 million, a 125% increase from the same period last year. Aetherion says HPDI systems can reduce greenhouse gas emissions by 20%, and by up to 100% using bioLNG, hydrogen and HVO.
WESTPORT FUEL SYSTEMS INC. reported a Rule 506(b) exempt equity offering with $25,000,000 USD remaining to be sold. The notice records $0 USD sold and states that the first sale is yet to occur.
Westport Fuel Systems Inc. registered up to 12,690,355 common shares for resale by Roth Principal Investments, LLC, representing shares Westport may elect to issue and sell to Roth under a committed equity facility. After Commencement, Westport may sell up to $25,000,000 in aggregate gross proceeds at its discretion over a period of up to 36 months, but is not obligated to sell. Westport receives no proceeds from Roth’s public resales; proceeds from sales to Roth are intended for working capital and general corporate purposes. Market-open and intraday purchases are priced at VWAP less 3.0%; pre-market and post-market purchases are priced at VWAP less 5.0%.
Nasdaq rules cap issuance at 3,797,247 shares unless TSX and shareholder approvals are obtained or the average purchase price equals or exceeds $1.9957; a separate 4.99% beneficial ownership limit applies. If all registered shares were issued, they would represent approximately 66.8% of the 18,995,734 shares outstanding as of September 15, 2026. Management identifies substantial doubt about the company’s ability to continue as a going concern, projecting cash and cash equivalents will be insufficient to fund operations through the next 12 months from its June 30, 2026 interim financial statements.
Westport Fuel Systems Inc. (WPRT) is registering for resale up to 12,690,355 common shares by Roth Principal Investments, LLC under a committed equity facility documented in a Common Share Purchase Agreement dated September 15, 2026. These shares are being registered for resale only; Westport is not selling shares directly in this prospectus and will not receive proceeds from those resales.
Separately, Westport may, at its sole discretion, sell up to $25,000,000 of common shares to Roth Principal Investments over a period of up to 36 months, subject to pricing, volume limits, a 3,797,247‑share Exchange Cap tied to Nasdaq rules and a 4.99% Beneficial Ownership Limitation. As of September 15, 2026, Westport had 18,995,734 common shares outstanding, so full use of the facility could be significantly dilutive to existing holders.
The company discloses that management has identified a material uncertainty regarding its ability to continue as a going concern, noting that projected cash and operating needs exceed current cash resources for the next twelve months. Potential proceeds from the equity facility are intended for working capital and general corporate purposes but are not assured.
Westport Fuel Systems Inc. (WPRT) established a committed equity facility with Roth Principal Investments, giving Westport the right, but not the obligation, to sell up to US$25,000,000 of common shares over a commitment period of up to 36 months, subject to price and volume conditions. A related registration registers the resale by Roth of up to 12,690,355 common shares acquired under this facility. Individual purchases may be made during market, intraday, pre‑market and post‑market sessions at discounts of 3% or 5% to VWAP, provided the prior Nasdaq close is at least US$1.00. Issuances are capped at 3,797,247 shares (19.99% of pre‑agreement shares) unless shareholder and TSX approvals or a pricing safe harbor remove this cap, and Roth cannot exceed 4.99% beneficial ownership. Westport expects any proceeds to be used for working capital and general corporate purposes and will pay up to US$500,000 in commitment fees plus legal and underwriting-related costs.
Westport Fuel Systems Inc. (WPRT) entered into a Committed Equity Facility with Roth Principal Investments, giving the company the right, but not the obligation, to sell up to US$25 million of common shares over a period of up to 36 months. The facility will be used through various intraday and off-market purchase types at prices based on Nasdaq VWAP, generally at a 3.0% discount for regular and intraday purchases and a 5.0% discount for pre- and post-market purchases, subject to a minimum price of US$1.00 per share and other conditions.
Westport plans to register for resale up to 12,690,355 common shares for Roth Principal Investments and expects to use any net proceeds for working capital and general corporate purposes. Nasdaq rules cap issuances under the agreement at 3,797,247 shares, or 19.99% of pre-agreement outstanding shares, unless pricing or shareholder-approval conditions are met, and Roth Principal Investments is limited to beneficial ownership of no more than 4.99% of outstanding shares. Westport will pay a cash commitment fee of up to US$500,000 (2.0% of the commitment), reimburse up to US$100,000 of initial legal fees and up to US$10,000 per quarter thereafter, and has paid US$50,000 to a qualified independent underwriter.