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WPRT 424B3: SEC filing

Filed with the SEC on · accession 0001370416-26-000026

WPRT filed a 424B3 (prospectus (offering)) with the SEC on Oct 16, 2026. Westport Fuel Systems Inc. changed its corporate name to Aetherion Technologies Inc. effective October 14, 2026. The stock moved +0.4% by the first close after the filing.

Summary of the filing

Westport Fuel Systems Inc. changed its corporate name to Aetherion Technologies Inc. effective October 14, 2026. The company's common shares are expected to begin trading under the new ticker symbol AETR on Nasdaq and TSX on or about October 23, 2026, subject to final exchange approvals.

For details, click here →How to read a 424B3 →

Key details

Last reported sale price of common shares on Nasdaq on October 15, 2026$2
Last reported sale price of common shares on TSX on October 15, 2026CAD 3
Registrant (formerly westport fuel systems inc.)Aetherion Technologies Inc.
Former name of registrantWestport Fuel Systems Inc.
Chief financial officerElizabeth Owens

How WPRT stock reacted

Close before

$1.82

Oct 15, 2026

First close after

+0.41%

$1.83

5 trading days

+22.91%

$2.24

Since filing

+21.81%

$2.22

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Frequently asked questions

What did WPRT file with the SEC on Oct 16, 2026?

WPRT filed a 424B3 (SEC filing). Westport Fuel Systems Inc. changed its corporate name to Aetherion Technologies Inc. effective October 14, 2026. The company's common shares are expected to begin trading under the new ticker symbol AETR on Nasdaq and TSX on or about October 23, 2026, subject to final exchange approvals.

How do I read a 424B3?

The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 424B3 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did WPRT stock react to this filing?

WPRT closed at $1.82 before the filing and $1.83 on Oct 16, 2026 (+0.41%). Five trading days later: $2.24 (+22.91%).

Other WPRT SEC filings

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