An anonymous director reports

WESTPORT ENTERS INTO COMMITTED EQUITY FACILITY OF UP TO US$25 MILLION

On Sept. 15, 2026, Westport Fuel Systems Inc. entered into a committed equity facility (CEF) with Roth Principal Investments LLC (RPI), an affiliate of CR Financial Holdings Inc., the holding company for Roth Capital Partners.

The CEF allows, but does not obligate, Westport to issue and sell up to $25-million (U.S.) of its common shares to RPI, at Westport's discretion by way of private placement and subject to certain conditions set forth in the CEF agreement, following the filing and effectiveness of a registration statement registering the resale of such shares. Subject to certain specified exceptions, under the applicable Nasdaq rules, the company may not issue to RPI under the CEF a number of common shares which is in excess of 19.99 per cent of the common shares outstanding immediately prior to the execution of the CEF (the exchange cap), unless the company obtains shareholder approval to issue common shares in excess of such exchange cap.

Westport intends to use any net proceeds for working capital and general corporate purposes. Westport may access capital opportunistically over time and is under no obligation to utilize the full amount available under the CEF. The company may not be able to sell the full $25-million (U.S.) of shares available under the facility due to limitations, including the exchange cap, the number of shares registered under an effective resale registration statement and applicable Nasdaq rules.

The company intends to file a registration statement with the Securities and Exchange Commission to register the resale by RPI of the shares issuable under the CEF. These securities may not be resold until that registration statement is filed and becomes effective.

About Westport Fuel Systems Inc.

Westport is a technology and innovation company connecting synergistic technologies to power a cleaner tomorrow. As a leading supplier of affordable, alternative fuel, low-emissions transportation technologies, the company designs, manufactures, and supplies advanced components and systems that enable the transition from traditional fuels to cleaner energy solutions.

The company's proven technologies support a wide range of alternative fuels -- including natural gas, renewable natural gas and hydrogen -- empowering OEMs (original equipment manufacturers) and commercial transportation industries to meet performance demands, regulatory requirements, and climate targets in a cost-effective way. With decades of expertise and a commitment to engineering excellence, Westport is helping our partners achieve sustainability goals -- without compromising performance or cost-efficiency -- making clean, scalable transport solutions a reality.

Westport is headquartered in Vancouver, Canada.

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